CN111577952A - Opening pressure adjustable water conservancy control valve - Google Patents
Opening pressure adjustable water conservancy control valve Download PDFInfo
- Publication number
- CN111577952A CN111577952A CN202010318624.3A CN202010318624A CN111577952A CN 111577952 A CN111577952 A CN 111577952A CN 202010318624 A CN202010318624 A CN 202010318624A CN 111577952 A CN111577952 A CN 111577952A
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- Prior art keywords
- sleeve
- water
- shell
- impeller
- rotating shaft
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/34—Excess-flow valves in which the flow-energy of the flowing medium actuates the closing mechanism
Abstract
The invention discloses a water conservancy control valve with adjustable opening pressure, which comprises a shell, wherein a protective sleeve is arranged on the right side of the upper end of the shell, an adjuster is arranged on one side in the protective sleeve, the adjuster comprises a sleeve, the sleeve penetrates through the side wall of the protective sleeve, a first sliding block and a second sliding block are respectively arranged on the left side and the right side in the sleeve, the first sliding block and the second sliding block are both in sliding connection with the inner side wall of the sleeve, a spring is connected between the first sliding block and the second sliding block, one side, far away from the spring, of the second sliding block is rotatably connected with a screw rod through a bearing seat, the right end of the screw rod penetrates through the sleeve and is provided with a knob, a threaded seat is arranged between the screw rod and the side wall of the sleeve, the screw. The invention can automatically adjust the rotation angle of the block according to the water injection pressure, adjust the water flow, achieve the purpose of automatic adjustment according to different water pressures, does not need manual operation, and is simple to use.
Description
Technical Field
The invention relates to the technical field of control valves, in particular to a water conservancy control valve with adjustable opening pressure.
Background
Valves are mechanical devices that control the flow, direction, pressure, temperature, etc. of a flowing fluid medium, and are essential components in piping systems. Valve tubing is technically the same as pumps and is often discussed as a separate category. The hydraulic control valve with adjustable opening pressure is a hydraulic control valve, and a pipeline is generally horizontally arranged.
The hydraulic control valve with adjustable opening pressure in the prior art usually opens a valve core manually, so that the operation is inconvenient, and the control valve cannot automatically adjust according to different water pressure. Accordingly, those skilled in the art will be able to provide a hydraulic control valve with an adjustable cracking pressure to solve the above-mentioned problems of the prior art.
Disclosure of Invention
The invention aims to provide a water conservancy control valve with adjustable opening pressure, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a water conservancy control valve with adjustable opening pressure comprises a shell, wherein one end of the shell is provided with a water outlet channel, and the other end of the shell is provided with a water inlet channel;
the right side of the upper end of the shell is provided with a protective sleeve, an adjuster is installed on one side in the protective sleeve, the adjuster comprises a sleeve, the sleeve penetrates through the side wall of the protective sleeve, the right end of the sleeve extends out of the protective sleeve, a first sliding block and a second sliding block are arranged on the left side and the right side in the sleeve respectively, the first sliding block and the second sliding block are in sliding connection with the inner side wall of the sleeve, a spring is connected between the first sliding block and the second sliding block, one side, far away from the spring, of the second sliding block is rotatably connected with a screw rod through a bearing seat, the right end of the screw rod penetrates through the sleeve and is provided with a knob, a threaded seat is arranged between the screw rod and the side wall of the sleeve;
a rotating shaft is arranged in the shell, the upper end and the lower end of the rotating shaft respectively penetrate through the upper side wall and the lower side wall of the shell, and a first impeller and a second impeller are arranged at the lower end of the rotating shaft;
an upper groove is formed in the upper end of the rotating shaft, and one end, far away from the first sliding block, of the pull rope is wound in the upper groove of the rotating shaft;
one side of the rotating shaft is provided with a blocking block, the cross section of the blocking block is fan-shaped, a baffle is arranged on one side, located in the blocking block, in the shell, the baffle is of an arc structure, a plurality of water outlet holes are formed in the baffle and are uniformly distributed on the baffle of the arc structure, and a protection plate is arranged on the left side, located in the rotating shaft, of the top end in the shell;
a box body is arranged at the lower end of the shell and positioned outside the first impeller and the second impeller, a water storage tank is arranged at the lower end of the box body, and a circulating device is externally connected to the water storage tank;
the lower extreme of inlet channel is provided with main water injection pipe, the left lateral wall that the tip of main water injection pipe runs through the box is located the box, and the one end of the nearly box of main water injection pipe is provided with vice water injection pipe, the tip of vice water injection pipe runs through the right lateral wall of box and is located inside the box, the shower nozzle is all installed to the tip of main water injection pipe and vice water injection pipe, the shower nozzle of main water injection pipe corresponds the position setting of impeller one, the shower nozzle of vice water injection pipe corresponds the position setting of impeller two, install control switch on the main water injection pipe.
As a further scheme of the invention: the outer side end of the water outlet channel and the outer side end of the water inlet channel are both provided with flanges, a plurality of fixing bolts are mounted on the flanges, the fixing bolts are circumferentially distributed on the flanges, and the fixing bolts are equidistantly distributed on the flanges.
As a still further scheme of the invention: the protective cover is installed to the upper end of protective sleeve, passes through threaded connection between protective cover and the protective sleeve, and the upper end of protection apron is provided with the handle.
As a still further scheme of the invention: be provided with the axle sleeve between the lateral wall of pivot and casing, the axle sleeve is fixed the embedded in the lateral wall of casing and is connected with the pivot rotation, and the inboard that lies in the axle sleeve between pivot and the casing lateral wall is provided with the sealing washer.
As a still further scheme of the invention: the first impeller and the second impeller are symmetrically arranged in front and back of the rotating shaft, lower grooves are formed in the left side of the first impeller and the right side of the second impeller, and the first impeller and the second impeller are identical in structure.
As a still further scheme of the invention: the initial state of the pull rope is a stretching state, and the initial state of the spring is a stretching state.
As a still further scheme of the invention: the baffle and the blocking block are both in sliding connection with the baffle by taking the central point of the rotating shaft as the circle center.
As a still further scheme of the invention: a plurality of apopore transverse distribution's position all in the horizontal cambered surface of sprue, the position of longitudinal distribution all in the vertical cambered surface of sprue between a plurality of apopores, during initial state, the cambered surface of sprue covers a plurality of apopores, sprue rotation angle is: rotated ninety degrees counterclockwise.
As a still further scheme of the invention: the circulating device comprises a micro water pump, a first guide pipe and a second guide pipe, the micro water pump is located on the left side of the upper end of the shell, the first guide pipe is installed at a water inlet of the micro water pump, the other end of the first guide pipe is communicated with the water storage tank, and a water outlet of the micro water pump is communicated with the water inlet channel through the second guide pipe.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, water flow with pressure in the water inlet channel is sprayed on the impeller I and the impeller II through the spray heads through the main water injection pipe and the auxiliary water injection pipe, so that the impellers can rotate by different angles according to the water injection pressure, the rotating shaft is further driven to rotate, namely, the blocking block is driven to rotate, the blocking block rotates by different angles according to the pressure, the larger the pressure is, the larger the rotating angle is, the more the water outlet holes in the baffle are opened, the purpose of automatic adjustment according to different water pressures is achieved, manual operation is not needed, the use is simple, and when the rotating shaft rotates, the tensile length of the spring can be adjusted through the adjusting adjuster, so that the tensile force of the rotating shaft to.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic control valve with adjustable opening pressure.
Fig. 2 is a front view of a variable cracking pressure hydraulic control valve.
FIG. 3 is a schematic diagram of a regulator for a hydraulic control valve with adjustable cracking pressure.
FIG. 4 is a top view of a block and flapper connection in a hydraulic control valve with adjustable cracking pressure.
FIG. 5 is a top view of a first impeller and a second impeller of a variable cracking pressure hydraulic control valve.
In the figure: 1-a shell; 2-a water outlet channel; 3-a flange; 4-fixing the bolt; 5-a water inlet channel; 6-a protective sleeve; 7-a protective cover; 8-handle; 9-a regulator; 91-a sleeve; 92-a first slide block; 93-a second sliding block; 94-a spring; 95-screw rod; 96-knob; 97-a threaded seat; 98-fixing the nut; 99-a pull cord; 10-a rotating shaft; 11-a shaft sleeve; 12-a sealing ring; 13-impeller one; 14-impeller two; 15-blocking; 16-a baffle plate; 17-water outlet; 18-a box body; 19-a water storage tank; 20-conduit one; 21-a micro water pump; 22-conduit two; 23-a protective plate; 24-a main water injection pipe; 25-auxiliary water injection pipe; 26-a spray head; 27-control the switch.
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 to 5, in the embodiment of the invention, a water conservancy control valve with adjustable opening pressure comprises a shell 1, wherein one end of the shell 1 is provided with a water outlet channel 2, the other end of the shell 1 is provided with a water inlet channel 5, flanges 3 are respectively arranged at the outer side ends of the water outlet channel 2 and the water inlet channel 5, a plurality of fixing bolts 4 are mounted on the flanges 3, the fixing bolts 4 are circumferentially distributed on the flanges 3, and the fixing bolts 4 are equidistantly distributed on the flanges 3;
a protective sleeve 6 is arranged on the right side of the upper end of the shell 1, the protective sleeve 6 comprises, but is not limited to, a cylinder, a rectangle and the like, a protective cover 7 is arranged at the upper end of the protective sleeve 6, the protective cover 7 is connected with the protective sleeve 6 through threads, and a handle 8 is arranged at the upper end of the protective cover 7;
an adjuster 9 is installed on one side in the protective sleeve 6, the adjuster 9 comprises a sleeve 91, the sleeve 91 penetrates through the side wall of the protective sleeve 6, the right end of the sleeve 91 extends out of the protective sleeve 6, a first slider 92 and a second slider 93 are respectively arranged on the left side and the right side in the sleeve 91, the first slider 92 and the second slider 93 are both in sliding connection with the inner side wall of the sleeve 91, a spring 94 is connected between the first slider 92 and the second slider 93, one side, far away from the spring 94, of the second slider 93 is rotatably connected with a screw 95 through a bearing seat, the right end of the screw 95 penetrates through the sleeve 91 and is provided with a knob 96, a threaded seat 97 is arranged between the screw 95 and the side wall of the sleeve 91, the screw 95 is in threaded connection with the threaded seat 97, a fixing nut 98 is sleeved between the sleeve 91 and the knob 96;
a rotating shaft 10 is installed in the shell 1, the upper end and the lower end of the rotating shaft 10 respectively penetrate through the upper side wall and the lower side wall of the shell 1, a shaft sleeve 11 is arranged between the rotating shaft 10 and the side wall of the shell 1, the shaft sleeve 11 is fixedly embedded in the side wall of the shell 1 and is rotatably connected with the rotating shaft 10, a sealing ring 12 is arranged between the rotating shaft 10 and the side wall of the shell 1 and positioned on the inner side of the shaft sleeve 11, a first impeller 13 and a second impeller 14 are installed at the lower end of the rotating shaft 10, the first impeller 13 and the second impeller 14 are symmetrically arranged in front and back of the rotating shaft 10, lower grooves are formed in the left side of the first impeller 13;
an upper groove is formed in the upper end of the rotating shaft 10, one end, far away from the first slider 92, of the pull rope 99 is wound in the upper groove of the rotating shaft 10, the pull rope 99 is in a stretching state in an initial state, and the spring 94 is in a stretching state in an initial state;
one side of the rotating shaft 10 is provided with a block 15, the cross section of the block 15 is fan-shaped, a baffle 16 is arranged at one side of the block 15 in the shell 1, the baffle 16 is of an arc structure, the baffle 16 and the block 15 both use the center point of the rotating shaft 10 as the center of a circle, the block 15 is connected with the baffle 16 in a sliding way, a plurality of water outlet holes 17 are arranged on the baffle 16, the water outlet holes 17 are uniformly distributed on the baffle 16 with the arc structure, the positions of the water outlet holes 17 which are transversely distributed are all in the transverse arc surface of the block 15, the positions of the water outlet holes 17 which are longitudinally distributed are all in the longitudinal arc surface of the block 15, when in an initial state, the cambered surface of sprue 15 covers a plurality of apopores 17, and the left side that the top is located pivot 10 in casing 1 is provided with guard plate 23, and pivot 10 rotates and drives 15 anticlockwise rotations of sprue to guard plate 23 plays the effect that blocks sprue 15, and sprue 15 rotation angle is: rotate ninety degrees counterclockwise;
a box body 18 is arranged at the lower end of the shell 1 and positioned at the outer sides of the first impeller 13 and the second impeller 145, a water storage tank 19 is arranged at the lower end of the box body 18, and the water storage tank 19 is externally connected with a circulating device;
the circulating device comprises a micro water pump 21, a first guide pipe 20 and a second guide pipe 22, the micro water pump 21 is positioned on the left side of the upper end of the shell 1, the first guide pipe 20 is arranged at a water inlet of the micro water pump 21, the other end of the first guide pipe 20 is communicated with the water storage tank 19, and a water outlet of the micro water pump 21 is communicated with the water inlet channel 5 through the second guide pipe 22;
the lower extreme of inlet channel 5 is provided with main water injection pipe 24, the left lateral wall that the tip of main water injection pipe 24 runs through box 18 is located the box 18, and the one end that main water injection pipe 24 is close to box 18 is provided with water injection sub-pipe 25, water injection sub-pipe 25's tip runs through the right lateral wall of box 18 and is located inside the box 18, shower nozzle 26 is all installed to main water injection pipe 24 and water injection sub-pipe 25's tip, the position setting that the shower nozzle 26 of main water injection pipe 24 corresponds impeller 13, water injection sub-pipe 25's shower nozzle corresponds impeller two 14, install control switch 27 on the main water injection pipe 24.
The working principle of the invention is as follows:
when the invention is used, the flange 3 and the fixing bolt 4 on the water outlet channel 2 of the water inlet channel 5 are connected with the pipeline, water is injected into the water inlet pipeline 5, the control switch 27 is opened at the moment, water flow is injected into the main water injection pipe 24 and the auxiliary water injection pipe 25 and is sprayed out through the spray head 26, the sprayed water flow respectively generates thrust on the first impeller 13 and the second impeller 14, so that the rotating shaft 10 rotates by the tension of the spring 94 in the regulator 9, the rotating shaft 10 drives the blocking block 15 to rotate (the blocking block 15 rotates anticlockwise, because the maximum rotation angle limited by the protection plate 23 is ninety degrees), the blocking block 15 can leak the water outlet hole 17 on the baffle plate 16 after rotating, so that the water flow can flow to one side of the water outlet channel 2 through the water outlet hole 17, the larger the pressure of the water flow in the water inlet channel 5, the larger the thrust of the water flow sprayed out through the spray head 26 is, the larger the rotation angle of the blocking block 15 is, the more the water outlet hole 17 leaks, and the larger the water flow is, so that the control valve can be automatically adjusted according to the water flow pressure;
the water in the box body 18 is stored in a water storage tank 19 and circularly flows into the water inlet channel 5 through a first guide pipe 20 and a second guide pipe 22 after working through a micro water pump 21;
when the rotating shaft 10 rotates, the pull rope 99 is wound, the pull rope 99 pulls the first slider 92 in the regulator 9 to move towards the left side, namely the rotating shaft 10 rotates by the pulling force of the spring 94, in an initial state, the pull rope 99 and the spring 94 in the regulator 9 are both in a stretching state, so that the rotating shaft 10 is fixed and prevented from rotating, namely the control valve is in a closed state, the screw 95 can rotate in the threaded seat 97 again by rotating the knob 96 in the regulator 9, the left and right movement of the screw 95 is realized, and further the position of the second slider 93 is adjusted, namely the pulling force is adjusted in the initial state of the spring 94, so that the opening pressure of the control valve can be adjusted, the fixing nut 98 is rotated to be close to the sleeve 91 after the screw 95 is adjusted, so that the screw 95 is further fixed, the phenomenon of thread slipping on the screw 95 is prevented, and the normal operation of the regulator.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A water conservancy control valve with adjustable opening pressure comprises a shell (1), and is characterized in that one end of the shell (1) is provided with a water outlet channel (2), and the other end of the shell (1) is provided with a water inlet channel (5);
a protective sleeve (6) is arranged on the right side of the upper end of the shell (1), an adjuster (9) is installed on one side in the protective sleeve (6), the adjuster (9) comprises a sleeve (91), the sleeve (91) penetrates through the side wall of the protective sleeve (6), the right end extends out of the protective sleeve (6), a first slider (92) and a second slider (93) are respectively arranged on the left side and the right side in the sleeve (91), the first slider (92) and the second slider (93) are both in sliding connection with the inner side wall of the sleeve (91), a spring (94) is connected between the first slider (92) and the second slider (93), a screw (95) is rotatably connected to one side, far away from the spring (94), of the second slider (93) through a bearing seat, the right end of the screw (95) penetrates through the sleeve (91) and is provided with a knob (96), a threaded seat (97) is arranged between the screw (95) and the side wall of the sleeve (91), a fixing nut (98) is sleeved between the sleeve (91) and the knob (96) on the outer side of the screw rod (95), and a pull rope (99) is arranged on one side, far away from the spring (94), of the first sliding block (92);
a rotating shaft (10) is installed in the shell (1), the upper end and the lower end of the rotating shaft (10) respectively penetrate through the upper side wall and the lower side wall of the shell (1), and a first impeller (13) and a second impeller (14) are installed at the lower end of the rotating shaft (10);
an upper groove is formed in the upper end of the rotating shaft (10), and one end, far away from the first sliding block (92), of the pull rope (99) is wound in the upper groove of the rotating shaft (10);
one side of the rotating shaft (10) is provided with a blocking block (15), the cross section of the blocking block (15) is fan-shaped, a baffle (16) is arranged on one side, located on the blocking block (15), in the shell (1), the baffle (16) is of an arc structure, a plurality of water outlet holes (17) are formed in the baffle (16), the water outlet holes (17) are uniformly distributed on the baffle (16) of the arc structure, and a protection plate (23) is arranged on the left side, located on the rotating shaft (10), of the top end in the shell (1);
a box body (18) is arranged at the lower end of the shell (1) and positioned at the outer sides of the first impeller (13) and the second impeller (145), a water storage tank (19) is arranged at the lower end of the box body (18), and a circulating device is externally connected to the water storage tank (19);
the lower extreme of inhalant canal (5) is provided with main water injection pipe (24), the left lateral wall that the tip of main water injection pipe (24) runs through box (18) is located box (18), and the one end that main water injection pipe (24) are nearly box (18) is provided with vice water injection pipe (25), the tip of vice water injection pipe (25) runs through the right lateral wall of box (18) and is located inside box (18), shower nozzle (26) are all installed to the tip of main water injection pipe (24) and vice water injection pipe (25), shower nozzle (26) of main water injection pipe (24) correspond the position setting of impeller (13), the shower nozzle of vice water injection pipe (25) corresponds the position setting of impeller two (14), install control switch (27) on main water injection pipe (24).
2. The water conservancy control valve with the adjustable opening pressure according to claim 1, wherein flanges (3) are arranged at the outer side ends of the water outlet channel (2) and the water inlet channel (5), a plurality of fixing bolts (4) are mounted on the flanges (3), the fixing bolts (4) are circumferentially distributed on the flanges (3), and the fixing bolts (4) are equidistantly distributed on the flanges (3).
3. The water conservancy control valve with the adjustable opening pressure as claimed in claim 1, wherein a protective cover (7) is mounted at the upper end of the protective sleeve (6), the protective cover (7) is in threaded connection with the protective sleeve (6), and a handle (8) is arranged at the upper end of the protective cover plate (7).
4. The water conservancy control valve with the adjustable opening pressure according to claim 1, wherein a shaft sleeve (11) is arranged between the rotating shaft (10) and the side wall of the shell (1), the shaft sleeve (11) is fixedly embedded in the side wall of the shell (1) and is rotatably connected with the rotating shaft (10), and a sealing ring (12) is arranged between the rotating shaft (10) and the side wall of the shell (1) and is positioned on the inner side of the shaft sleeve (11).
5. The hydraulic control valve with adjustable opening pressure according to claim 1, wherein the first impeller (13) and the second impeller (14) are symmetrically arranged in front and back directions around the rotating shaft (10), the left side of the first impeller (13) and the right side of the second impeller (14) are provided with lower grooves, and the first impeller (13) and the second impeller (14) are identical in structure.
6. An adjustable cracking pressure hydraulic control valve as claimed in claim 1, characterised in that the pull cord (99) is initially in tension and the spring (94) is initially in tension.
7. The hydraulic control valve with adjustable opening pressure according to claim 1, wherein the baffle (16) and the block (15) are both centered around the central point of the rotating shaft (10), and the block (15) is slidably connected with the baffle (16).
8. The water conservancy control valve with adjustable opening pressure according to claim 1, wherein the plurality of water outlet holes (17) are transversely distributed in a transverse arc surface of the block (15), the plurality of water outlet holes (17) are longitudinally distributed in a longitudinal arc surface of the block (15), in an initial state, the arc surface of the block (15) covers the plurality of water outlet holes (17), and the rotation angle of the block (15) is as follows: rotated ninety degrees counterclockwise.
9. The water conservancy control valve with the adjustable opening pressure according to claim 1, wherein the circulating device comprises a micro water pump (21), a first guide pipe (20) and a second guide pipe (22), the micro water pump (21) is located on the left side of the upper end of the shell (1), the first guide pipe (20) is installed at a water inlet of the micro water pump (21), the other end of the first guide pipe (20) is communicated with the water storage tank (19), and a water outlet of the micro water pump (21) is communicated with the water inlet channel (5) through the second guide pipe (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010318624.3A CN111577952B (en) | 2020-04-21 | 2020-04-21 | Opening pressure adjustable water conservancy control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010318624.3A CN111577952B (en) | 2020-04-21 | 2020-04-21 | Opening pressure adjustable water conservancy control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111577952A true CN111577952A (en) | 2020-08-25 |
| CN111577952B CN111577952B (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010318624.3A Active CN111577952B (en) | 2020-04-21 | 2020-04-21 | Opening pressure adjustable water conservancy control valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN111577952B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112460041A (en) * | 2020-11-24 | 2021-03-09 | 裴欣 | Water pump variable-pressure over-excitation emergency device |
| CN113790302A (en) * | 2021-09-18 | 2021-12-14 | 绍兴柯桥春生水务科技有限公司 | Multifunctional valve capable of being quickly closed |
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| CN209977372U (en) * | 2019-05-29 | 2020-01-21 | 浙江益明阀门有限公司 | Faucet with automatic water outlet stopping function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011057179A (en) * | 2009-09-14 | 2011-03-24 | Nifco Inc | Washer pump system and method for controlling the same |
| CN102679023A (en) * | 2012-04-26 | 2012-09-19 | 成都思驰科技有限公司 | Fluid self-assisted valve controller and control method thereof |
| CN208268467U (en) * | 2017-11-28 | 2018-12-21 | 广西壮族自治区环境保护科学研究院 | A kind of corrosion-resistant Liquid level diaphragm valve for desalting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112460041A (en) * | 2020-11-24 | 2021-03-09 | 裴欣 | Water pump variable-pressure over-excitation emergency device |
| CN113790302A (en) * | 2021-09-18 | 2021-12-14 | 绍兴柯桥春生水务科技有限公司 | Multifunctional valve capable of being quickly closed |
| CN113790302B (en) * | 2021-09-18 | 2023-02-24 | 绍兴柯桥春生水务科技有限公司 | Multifunctional valve capable of being quickly closed |
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| Publication number | Publication date |
|---|---|
| CN111577952B (en) | 2021-11-02 |
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