CN110406832A - A kind of filling anti-overflow control device of the built-in bottom section canned for oil tank - Google Patents
A kind of filling anti-overflow control device of the built-in bottom section canned for oil tank Download PDFInfo
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- CN110406832A CN110406832A CN201910706712.8A CN201910706712A CN110406832A CN 110406832 A CN110406832 A CN 110406832A CN 201910706712 A CN201910706712 A CN 201910706712A CN 110406832 A CN110406832 A CN 110406832A
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- valve
- float
- hydraulic control
- pilot valve
- control main
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Float Valves (AREA)
Abstract
A kind of filling anti-overflow control device of the built-in bottom section canned for oil tank is claimed in the present invention; comprising: hydraulic control main valve, float pilot valve and connecting tube; the hydraulic control main valve is mounted in the entrance pipe oil tank of tank bottom; float pilot valve is mounted on roof; float pilot valve is connected to by connecting tube with hydraulic control main valve, and hydraulic control main valve realizes the opening and closing of valve by inlet outlet pressure differential, when liquid level is lower than setting height; float pilot valve is opened, and hydraulic control main valve automatically turns under differential pressure action；When liquid level reaches setting height, float, which floats, closes float pilot valve, and hydraulic control main valve is automatically closed, i.e. hydraulic control main valve realizes pilot control by float pilot valve, when oil plant reaches set volume height in oil tank, float pilot valve closes and then controls hydraulic control main valve and closes, and prevents oil tank oil spilling.
Description
Technical field
The invention belongs to tank truck field more particularly to the anti-overflow control technology fields of tank truck.
Background technique
Oil tank is when using bottom loading, as nobody is observed in tank on liquid level up to tank deck by opening small manhole cover
Rise situation, it is easy to which the accident that roof fall oil spilling occurs seriously affects operation safety and pollutes environment.
The filling anti-overflow control device of built-in bottom section of the present invention is mounted on the canned pipeline of tank bottom and roof, works as oil
When canned full, energy valve-closing cuts off oil inlet pipe, prevents oil plant spilling in oil tank from causing loss and security risk.
Summary of the invention
Present invention seek to address that the above problem of the prior art.Proposing one kind prevents oil plant spilling in oil tank from causing to be lost
With the built-in bottom section filling anti-overflow control device canned for oil tank for avoiding security risk.Technical solution of the present invention is such as
Under:
A kind of filling anti-overflow control device of the built-in bottom section canned for oil tank comprising: hydraulic control main valve (1), float
Pilot valve (2) and connecting tube (3), the hydraulic control main valve (1) are mounted in the entrance pipe oil tank of tank bottom, float pilot valve (2)
It is mounted on roof, float pilot valve (2) is connected to by connecting tube (3) with hydraulic control main valve (1), and the hydraulic control main valve (1) is used for
The entrance pipe for controlling tank bottom being opened and closing, the float pilot valve (2) be used to control hydraulic control main valve (1) unlatching and
It closes；Hydraulic control main valve (1) realizes the opening and closing of valve by inlet outlet pressure differential, when liquid level is lower than setting height, float
Pilot valve (2) is opened, and hydraulic control main valve (1) automatically turns under differential pressure action；When liquid level reaches setting height, float, which floats, to be made to float
Sub- pilot valve (2) is closed, and hydraulic control main valve is automatically closed, i.e., hydraulic control main valve (1) realizes pilot control by float pilot valve, when in oil tank
When oil plant reaches set volume height, float pilot valve (2) closes and then controls hydraulic control main valve (1) and closes, and prevents oil tank oil spilling.
Further, the hydraulic control main valve (1) includes valve body of main valve (11), the first spring (12), rectifying cover (13), sealing
Enclose (14), spool (15), guide tube (16), pressure plug screw (17), seal joint (18), primary seal circle (19), flange (110) and pipe
Connector (111), the guide tube (16) are set to valve body (11) inner cavity, and spool (15) is set in guide tube (16), sealing ring (14)
Be set between valve body (11) and guide tube (16) and be connected with spool (15), spring (12) be set to valve body (11) inner cavity with
It between spool (15), is resetted for spool (15), rectifying cover (13) is set to valve body (11) outside, for reducing from valve body (11) D
The impact of mouth outflow fluid, pressure plug screw (17) are set to spool (15) front end, and seal joint (18) is set to valve body (11) and opens
Mouth end inner cavity, primary seal circle (19) are set between seal joint (18) and flange (110), and flange (110) is set to valve body
(11) open end, pipe fitting (111) are set to the pressure tappings of flange (110).
Further, oil plant is on A mouthfuls of effect spools (15) of hydraulic control main valve, under oil pressure effect, spool (15) Xiang Zuoyi
Dynamic, oil plant enters B chamber through A mouthfuls of hydraulic control main valve, and oil plant is flowed out by D mouthfuls, while oil plant enters C chamber through pressure plug screw throttle orifice E, then
It is flowed out by duct G by interface E, float pilot valve is entered by connecting tube.When being in low liquid level, float pilot valve is in opening state
The oil plant flow of state, disengaging C chamber is all flowed out by interface E, and the oil plant flow of C chamber is in equilibrium state, acts on lower valve in oil pressure
Core (15) opens oil inlet；When reach control liquid level when, float pilot valve close, C chamber oil plant outlet close pressure rise to and oil inlet
Pressure is identical, closes in the synergy bottom spool of C chamber oil pressure and spring force, stops oil inlet.
Further, the float pilot valve (2) include float (21), pilot valve valve body (22), valve rod (23), flap (24),
Second spring (25), valve seat (26), connecting tube (27), connecting flange (28), the second pipe fitting (29), the float (21) and valve
Bar (23) is connected, and pilot valve valve body (22) is connected by connecting tube (27) with connecting flange (28), valve rod (23) and pilot valve valve
Body (22) is connected, and flap (24) is connected with valve rod (23), and second spring (25) is connected with flap (24), valve seat (26) with
Pilot valve valve body (22) is connected, and connecting tube (27) is connected with connecting flange (28), the second pipe fitting (29) and connecting tube (27)
It is connected.
Further, the oil plant flowed out from hydraulic control main valve interface E, enters H mouthfuls of float pilot valve by connecting tube, leads from float
K mouthfuls of valve outflows, when being in low liquid level, the float (21) of float pilot valve is in low level, and float (21) is driven by valve rod (23)
Flap (24) is in the open position, and is connected to flap (24) and the channel of valve seat (26), and oil plant enters from H mouthfuls of float pilot valve, from
K mouthfuls of float pilot valve outflows, hydraulic control main valve is in the open state, and when reaching control liquid level, float (21) passes through valve rod (23) band
Dynamic flap (24) go to closed position, make the closing of the channel of flap (21) and valve seat (26), into H mouthfuls of float pilot valve of oil plants without
Method flowing, hydraulic control main valve are closed.
It advantages of the present invention and has the beneficial effect that:
The filling anti-overflow control device of built-in bottom section of the present invention is opened using fully mechanical control technology control bound valve
It opens and closes, there is higher reliability and explosive-proof grade.
The filling anti-overflow control device of built-in bottom section is mounted on inside oil tank, keeps bottom conduit design simpler.
Hydraulic control main valve uses balance valve core structure, is acted using pressure difference control valve core, and cracking pressure is small, and switch motion is flat
Surely.
The connecting tube of float pilot valve uses adjustable structure, it may be convenient to be set by adjusting float pilot valve installation site
Determine level control height.
Detailed description of the invention
Fig. 1 is that the present invention provides the preferred embodiment built-in bottom section canned for oil tank filling anti-overflow control device signal
Figure；
Fig. 2 is hydraulic control main valve structure and schematic diagram；
Fig. 3 is float pilot valve structure schematic diagram；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, detailed
Carefully describe.Described embodiment is only a part of the embodiments of the present invention.
The technical solution that the present invention solves above-mentioned technical problem is:
1. structure composition and working principle
The anti-overflow control device of bottom filling is made of hydraulic control main valve and float pilot valve and connecting tube, as shown in Figure 1.Hydraulic control master
Valve is mounted in tank bottom entrance pipe oil tank, and float pilot valve is mounted on roof, and float pilot valve passes through connecting tube and liquid
Control main valve connection.
(1) hydraulic control main valve
Hydraulic control main valve by rectifying cover, guide tube, primary seal circle, seal joint, pressure plug screw, valve body, spring, spool, flange,
The composition such as sealing ring, pipe fitting.Structure is as shown in Figure 2 with control principle.
The hydraulic control main valve 1 includes valve body of main valve 11, the first spring 12, rectifying cover 13, sealing ring 14, spool 15, guide tube
16, pressure plug screw 17, seal joint 18, primary seal circle 19, flange 110 and pipe fitting 111, the guide tube 16 are set to valve body 11
Inner cavity, spool 15 are set in guide tube 16, and sealing ring 14 is set between valve body 11 and guide tube 16 and is connected with spool 15,
Spring 12 is set between 11 inner cavity of valve body and spool 15, and rectifying cover 13 is set to outside valve body 11, pressure plug screw 17 is set to valve
15 front end of core, seal joint 18 are set to 11 open end inner cavity of valve body, and primary seal circle 19 is set to seal joint 18 and flange 110
Between, flange 110 is set to 11 open end of valve body, and pipe fitting 111 is set to the pressure tappings of flange 110.
Valve body of main valve 11 is for connecting and supporting each part, and the first spring 12 is resetted for spool 15, and rectifying cover 13 is used for
Reduce the impact that fluid is flowed out from 11D mouthfuls of valve body, sealing ring 14 is used for 15 radial seal of spool, and spool 15 is opened for main valve
It closes, guide tube 16 is used to support spool 15, and pressure plug screw 17 is used to adjust the size of pressure tappings E, and seal joint 18 is for fixed master
Sealing ring 19, primary seal circle 19 is used for and spool 15 forms main valve sealing, and flange 110 is fixed for main valve installation and pipe fitting
111 by connecting tube 3 and float pilot valve 2 for being connected.
Oil plant is on A mouthfuls of effect spools 5 of hydraulic control main valve, and under oil pressure effect, spool 5 is moved to the left, and oil plant is through hydraulic control master
A mouthfuls of valve enter B chamber, and oil plant is flowed out by D mouthfuls.Oil plant enters C chamber through pressure plug screw throttle orifice E simultaneously, using duct G by interface
E outflow, enters float pilot valve by connecting tube.When being in low liquid level, float pilot valve is in the open state, passes in and out the oil of C chamber
Stream amount is all flowed out by interface E, and the oil plant flow of C chamber is in equilibrium state, opens oil inlet in oil pressure effect bottom spool 5；When
When reaching control liquid level, float pilot valve is closed, and C chamber oil plant outlet closing pressure rise is extremely identical as input pressure, in C chamber oil pressure
It is closed with the synergy bottom spool of spring force, stops oil inlet.
2 float pilot valves
Float pilot valve is made of valve body, valve seat, flap, valve rod, spring, float, connecting tube, connecting flange, pipe fitting etc.,
Structure is as shown in Figure 3.Essentially according to setting liquid level, control hydraulic control main valve controls oil circuit.
Further, the float pilot valve 2 include float 21, pilot valve valve body 22, valve rod 23, flap 24, second spring 25,
Valve seat 26, connecting tube 27, connecting flange 28, the second pipe fitting 29, the float 21 are connected with valve rod 23, and pilot valve valve body 22 is logical
Connecting tube 27 to be crossed to be connected with connecting flange 28, valve rod 23 is connected with pilot valve valve body 22, and flap 24 is connected with valve rod 23, the
Two springs 25 are connected with flap 24, and valve seat 26 is connected with pilot valve valve body 22, and connecting tube 27 is connected with connecting flange 28, the
Two pipe fittings 29 are connected with connecting tube 27.
Float 21 is used to drive flap 24 to rotate by valve rod 23, and pilot valve valve body 22 connects and support each part, valve rod 23
For connecting float 21 and flap 24, flap 24 is used to cooperate control float pilot valve switch with valve seat 6, and second spring 25 is used for will
Flap 24 is pressed on valve seat 26, and valve seat 26 is used to cooperate with flap 24 switch of control float pilot valve, and connecting tube 27 is used for the
Two pipe fittings 29 are connected with valve body, and installation of the connecting flange 28 for float pilot valve is fixed, and the second pipe fitting 29 is for passing through company
Adapter tube 3 and hydraulic control main valve 1 connect.
The oil plant flowed out from hydraulic control main valve interface E, enters H mouthfuls of float pilot valve by connecting tube, flows from K mouthfuls of float pilot valve
Out.When being in low liquid level, the float 1 of float pilot valve is in low level, and float 1 drives flap 4 to be in open position by valve rod 3
It sets, is connected to flap 4 and the channel of valve seat 6, oil plant enters from H mouthfuls of float pilot valve, flows out from K mouthfuls of float pilot valve, hydraulic control main valve
It is in the open state.When reaching control liquid level, float 1 drives flap 4 to go to closed position by valve rod 3, makes flap 4 and valve
The channel of seat 6 is closed, and can not be flowed into H mouthfuls of float pilot valve of oil plants, and hydraulic control main valve is closed.
Hydraulic control main valve is mounted on oil tank entrance, and float pilot valve is mounted on roof, and float pilot valve passes through connecting tube and liquid
Control main valve connection.Hydraulic control main valve realizes the opening and closing of valve by inlet outlet pressure differential.When liquid level is lower than setting height, float
Sub- pilot valve is opened, and hydraulic control main valve automatically turns under differential pressure action；When liquid level reaches setting height, float, which floats, leads float
Valve is closed, and hydraulic control main valve is automatically closed.I.e. hydraulic control main valve realizes pilot control by float pilot valve, when oil plant reaches and sets in oil tank
When constant volume height, float pilot valve closes and then controls hydraulic control main valve and closes, and prevents oil tank oil spilling.
2. technological innovation
Technological innovation of the invention mainly has:
(1) the filling anti-overflow control device of built-in bottom section using fully mechanical control technology control bound valve unlatching and
It closes, there is higher reliability and explosive-proof grade.
(2) the filling anti-overflow control device of built-in bottom section is mounted on inside oil tank, keeps bottom conduit design simpler.
(3) hydraulic control main valve uses balance valve core structure, is acted using pressure difference control valve core, cracking pressure is small, switch motion
Steadily.
(4) connecting tube of float pilot valve uses adjustable structure, it may be convenient to by adjusting float pilot valve installation site
To set level control height.
The above embodiment is interpreted as being merely to illustrate the present invention rather than limit the scope of the invention.In
After the content for having read record of the invention, technical staff can be made various changes or modifications the present invention, these equivalent changes
Change and modification equally falls into the scope of the claims in the present invention.
Claims (5)
1. a kind of filling anti-overflow control device of the built-in bottom section canned for oil tank characterized by comprising hydraulic control main valve
(1), float pilot valve (2) and connecting tube (3), the hydraulic control main valve (1) are mounted in the entrance pipe oil tank of tank bottom, float
Pilot valve (2) is mounted on roof, and float pilot valve (2) is connected to by connecting tube (3) with hydraulic control main valve (1), the hydraulic control main valve
(1) it is used to control opening and closing for the entrance pipe of tank bottom, the float pilot valve (2) is for controlling hydraulic control main valve (1)
Opening and closing；Hydraulic control main valve (1) realizes the opening and closing of valve by inlet outlet pressure differential, when liquid level is lower than setting height
When, float pilot valve (2) is opened, and hydraulic control main valve (1) automatically turns under differential pressure action；When liquid level reaches setting height, float
Floating closes float pilot valve (2), and hydraulic control main valve is automatically closed, i.e., hydraulic control main valve (1) realizes pilot control by float pilot valve,
When oil plant reaches set volume height in oil tank, float pilot valve (2) closes and then controls hydraulic control main valve (1) and closes, and prevents oil
Tank oil spilling.
2. a kind of filling anti-overflow control device of the built-in bottom section canned for oil tank according to claim 1, feature
It is, the hydraulic control main valve (1) includes valve body of main valve (11), the first spring (12), rectifying cover (13), sealing ring (14), spool
(15), guide tube (16), pressure plug screw (17), seal joint (18), primary seal circle (19), flange (110) and pipe fitting (111),
The guide tube (16) is set to valve body (11) inner cavity, and spool (15) is set in guide tube (16), and sealing ring (14) is set to and valve
Be connected between body (11) and guide tube (16) and with spool (15), spring (12) be set to valve body (11) inner cavity and spool (15) it
Between, it is resetted for spool (15), rectifying cover (13) is set to valve body (11) outside, for reducing from D mouthfuls of outflow fluids of valve body (11)
Impact, pressure plug screw (17) is set to spool (15) front end, and seal joint (18) is set to valve body (11) open end inner cavity, main
Sealing ring (19) is set between seal joint (18) and flange (110), and flange (110) is set to valve body (11) open end, pipe
Connector (111) is set to the pressure tappings of flange (110).
3. a kind of filling anti-overflow control device of the built-in bottom section canned for oil tank according to claim 2, feature
It is, oil plant is on A mouthfuls of effect spools (15) of hydraulic control main valve, and under oil pressure effect, spool (15) is moved to the left, and oil plant is through hydraulic control
A mouthfuls of main valve enter B chamber, and oil plant is flowed out by D mouthfuls, while oil plant enters C chamber through pressure plug screw throttle orifice E, using duct G by connecing
Mouth E outflow, enters float pilot valve by connecting tube.When being in low liquid level, float pilot valve is in the open state, disengaging C chamber
Oil plant flow is all flowed out by interface E, and the oil plant flow of C chamber is in equilibrium state, oil pressure effect bottom spool (15) open into
Oil；When reaching control liquid level, float pilot valve is closed, and C chamber oil plant outlet closing pressure rise is extremely identical as input pressure, in C
The synergy bottom spool of chamber oil pressure and spring force is closed, and oil inlet is stopped.
4. a kind of filling anti-overflow control device of the built-in bottom section canned for oil tank according to claim 1, feature
Be, the float pilot valve (2) include float (21), pilot valve valve body (22), valve rod (23), flap (24), second spring (25),
Valve seat (26), connecting tube (27), connecting flange (28), the second pipe fitting (29), the float (21) are connected with valve rod (23),
Pilot valve valve body (22) is connected by connecting tube (27) with connecting flange (28), and valve rod (23) is connected with pilot valve valve body (22),
Flap (24) is connected with valve rod (23), and second spring (25) is connected with flap (24), valve seat (26) and pilot valve valve body (22)
It is connected, connecting tube (27) is connected with connecting flange (28), and the second pipe fitting (29) is connected with connecting tube (27).
5. a kind of filling anti-overflow control device of the built-in bottom section canned for oil tank according to claim 4, feature
It is, the oil plant flowed out from hydraulic control main valve interface E enters H mouthfuls of float pilot valve by connecting tube, flows out from K mouthfuls of float pilot valve, when
When in low liquid level, the float (21) of float pilot valve is in low level, and float (21) drives flap (24) to be in by valve rod (23)
Open position is connected to flap (24) and the channel of valve seat (26), and oil plant enters from H mouthfuls of float pilot valve, flows from K mouthfuls of float pilot valve
Out, hydraulic control main valve is in the open state, and when reaching control liquid level, float (21) drives flap (24) to go to by valve rod (23)
Closed position is closed the channel of flap (21) and valve seat (26), can not be flowed into H mouthfuls of float pilot valve of oil plants, hydraulic control master
Valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910706712.8A CN110406832B (en) | 2019-08-01 | 2019-08-01 | Built-in bottom filling anti-overflow control device for oil tank filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910706712.8A CN110406832B (en) | 2019-08-01 | 2019-08-01 | Built-in bottom filling anti-overflow control device for oil tank filling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110406832A true CN110406832A (en) | 2019-11-05 |
| CN110406832B CN110406832B (en) | 2021-08-17 |
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ID=68365229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910706712.8A Active CN110406832B (en) | 2019-08-01 | 2019-08-01 | Built-in bottom filling anti-overflow control device for oil tank filling |
Country Status (1)
| Country | Link |
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| CN (1) | CN110406832B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303248A (en) * | 2020-10-29 | 2021-02-02 | 四川科宏石油天然气工程有限公司 | Float pilot-operated drain valve |
| CN115199808A (en) * | 2022-07-07 | 2022-10-18 | 重庆川庆科技发展有限公司 | Automatic pressure flow control valve with high liquid level control function |
| CN115231728A (en) * | 2022-06-13 | 2022-10-25 | 福建省龙德新能源有限公司 | Be used for phosphorus pentafluoride preparation waste liquid to retrieve device of recycling |
| CN115557570A (en) * | 2022-09-27 | 2023-01-03 | 重庆川庆科技发展有限公司 | Float type oil-water separator |
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| CN2209346Y (en) * | 1994-11-17 | 1995-10-04 | 贺明 | Overflow-proof self-sealing system |
| CN201507029U (en) * | 2009-07-21 | 2010-06-16 | 中国石化集团胜利石油管理局滨南社区管理中心 | Fecal suction truck anti-overflow tank device |
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| CN103885467A (en) * | 2012-12-21 | 2014-06-25 | 罗斯蒙特储罐雷达股份公司 | Identifying Undesired Conditions In The Function Of A Floating Roof Of A Tank |
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| CN2209346Y (en) * | 1994-11-17 | 1995-10-04 | 贺明 | Overflow-proof self-sealing system |
| CN201507029U (en) * | 2009-07-21 | 2010-06-16 | 中国石化集团胜利石油管理局滨南社区管理中心 | Fecal suction truck anti-overflow tank device |
| CN202193359U (en) * | 2011-06-03 | 2012-04-18 | 向天华 | Manhole cover of vehicular petroleum tank with breather valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303248A (en) * | 2020-10-29 | 2021-02-02 | 四川科宏石油天然气工程有限公司 | Float pilot-operated drain valve |
| CN112303248B (en) * | 2020-10-29 | 2023-03-21 | 四川科宏石油天然气工程有限公司 | Float pilot-operated drain valve |
| CN115231728A (en) * | 2022-06-13 | 2022-10-25 | 福建省龙德新能源有限公司 | Be used for phosphorus pentafluoride preparation waste liquid to retrieve device of recycling |
| CN115231728B (en) * | 2022-06-13 | 2022-12-23 | 福建省龙德新能源有限公司 | Be used for phosphorus pentafluoride preparation waste liquid to retrieve device of recycling |
| CN115199808A (en) * | 2022-07-07 | 2022-10-18 | 重庆川庆科技发展有限公司 | Automatic pressure flow control valve with high liquid level control function |
| CN115557570A (en) * | 2022-09-27 | 2023-01-03 | 重庆川庆科技发展有限公司 | Float type oil-water separator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110406832B (en) | 2021-08-17 |
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