CN113983229B - Double-position steady-state liquid level control device - Google Patents
Double-position steady-state liquid level control device Download PDFInfo
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- CN113983229B CN113983229B CN202111254738.7A CN202111254738A CN113983229B CN 113983229 B CN113983229 B CN 113983229B CN 202111254738 A CN202111254738 A CN 202111254738A CN 113983229 B CN113983229 B CN 113983229B
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- 239000007788 liquid Substances 0.000 title claims abstract description 123
- 230000002787 reinforcement Effects 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims description 17
- 230000009977 dual effect Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000005484 gravity Effects 0.000 abstract description 8
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- 239000000243 solution Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/02—Level control, e.g. controlling quantity of material stored in vessel without auxiliary power
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- Automation & Control Theory (AREA)
- Float Valves (AREA)
Abstract
The invention relates to a double-position steady-state liquid level control device, which comprises a valve (1), a sliding valve core (2), a valve body frame (3), a self-locking reinforcement hinge push-pull rod (4), a self-locking reinforcement hinge plate (5), a vibration reduction auxiliary spring (6), a valve closing control arm (7), a valve opening control arm (8), a hollow floating ball (9) and a counterweight ball (10); when the liquid level rises to be close to the upper limit height, the buoyancy force borne by the hollow floating ball (9) is gradually increased, the valve closing control arm (7) rotates anticlockwise to drive the self-locking reinforcement hinge plate (5) to rotate anticlockwise, the sliding valve core (2) moves leftwards, and the valve is closed; when the liquid level descends, the buoyancy of the hollow floating ball (9) gradually decreases, and when the liquid level is lower than the counterweight ball (10), the gravity of the counterweight ball (10) pulls the valve opening control arm (8) to rotate clockwise, the self-locking reinforcement hinge plate (5) rotates clockwise, the sliding valve core (2) moves rightwards, and the valve (1) is opened.
Description
Technical Field
The invention relates to the technical field of liquid level regulation, in particular to a double-position steady-state liquid level control device.
Background
In daily life and industrial fields, the liquid level in the container is often required to be kept within a certain range, namely, when the liquid level rises to the upper limit of the allowed height, the liquid inlet valve is closed in time to prevent the liquid level in the container from rising continuously, and when the liquid level falls to the lower limit of the allowed height, the liquid inlet valve is opened in time to supplement liquid to prevent the liquid level from falling to the lower limit of the allowed height.
The prior art solves the problems by utilizing a float valve, and the float valve is matched with a magnetic self-retaining mechanism through the interaction of buoyancy and gravity, when the liquid level is reduced to be lower than a lower limit float ball, the lower limit float ball is exposed out of the liquid level, and the gravity of the liquid in the float ball acts, so that the total pulling force born by the valve is greater than the magnetic retaining suction force, and the movable valve core is driven to open the valve; before the liquid level rises to the upper limit floating ball to submerge, the total pulling force is still greater than the buoyancy force, and the valve opening state is maintained; when the liquid level rises to the upper limit floating ball to generate rated buoyancy, the floating ball lever is driven to rise, after the magnetic retaining mechanism rises to generate suction force, the valve closing force is multiplied, and the valve closing process is accelerated to rapidly close the water inlet valve; under the valve closing state, before the liquid level drops to the lower limit float bowl to be exposed, the valve closing state is kept due to the magnetic attraction, so that the double-position adjustable self-protection quick valve opening and closing of the float valve can be realized, and the liquid level height is kept. However, the valve needs the assistance of a permanent magnet to control the valve state to be kept, and the valve can have larger vibration in the opening and closing process, so that the reliability of the valve can be seriously affected for a long time.
Disclosure of Invention
It is an aim of embodiments of the present invention to provide a dual position steady state fluid level control device that addresses at least one of the problems of the background art described above. When the liquid level rises to the upper limit height, the liquid inlet of the valve is automatically closed to prevent the liquid from continuously entering; when the liquid level drops to the lower limit height, the liquid inlet of the valve is automatically opened to supplement liquid. The liquid level upper and lower positions are convenient to set and adjust, double-position adjustable self-protection quick valve opening and closing of the valve can be realized without any external energy and external force, the vibration and abrasion problems caused when the valve is opened and closed in the existing control mode are avoided, the structure is firm, the environmental tolerance is strong, the high temperature is not feared, the service life of the valve is prolonged, and the use, the installation and the maintenance are convenient and simple.
In order to solve the technical problems, the technical scheme of the invention provides a double-position steady-state liquid level control device, which comprises: the valve comprises a valve body frame, a sliding valve core, a valve body frame, a self-locking reinforcement hinge push-pull rod, a pair of self-locking reinforcement hinge plates, a valve closing control arm, a valve opening control arm, a hollow floating ball and a counterweight ball, wherein the valve is connected with the valve body frame into a whole, the sliding valve core is connected with one end of the self-locking reinforcement hinge push-pull rod, the other end of the self-locking reinforcement hinge push-pull rod is connected with the pair of self-locking reinforcement hinge plates, and the valve closing control arm and the valve opening control arm are connected on the valve body frame.
In the above technical solution, preferably, the valve includes a liquid inlet and a liquid outlet, and the valve is fixedly connected with the valve body frame.
In the above technical solution, preferably, the sliding valve core is located inside the valve, and a front end of the sliding valve core is made of valve core rubber.
In the above technical solution, preferably, one end of the self-locking force-increasing hinge push-pull rod is hinged with the sliding valve core, and the other end of the self-locking force-increasing hinge push-pull rod is hinged with the pair of self-locking force-increasing hinge plates.
In the above technical solution, preferably, one end of the pair of self-locking force-increasing hinge plates is connected to the valve body frame through a fixed rotation pin with the valve closing control arm and the valve opening control arm, the other end of the pair of self-locking force-increasing hinge plates is lapped on the valve body frame through a rotation pin, and a tension spring fixing pin is arranged at the lower end of the valve body frame.
In the above technical solution, preferably, the valve closing control arm and the valve body frame are respectively provided with an arc-shaped empty slot, and the valve closing control arm, the valve opening control arm and the pair of self-locking reinforcing hinge plates are connected to the valve body frame through a rotating pin, and when the valve performs the opening and closing actions, the rotating pin slides along the arc-shaped empty slot on the valve body frame.
In the above technical solution, preferably, the hollow floating ball is connected with the tail end of the valve closing control arm through a rigid floating ball arm, and one end of the rigid floating ball arm away from the hollow floating ball is connected with the tail end of the valve closing control arm through an adjusting bolt.
In the above technical solution, preferably, the weight ball is connected with the tail end of the valve opening control arm through a soft rope, and two ends of the soft rope are respectively connected with the tail end of the valve opening control arm and the weight ball through two buckles.
In the above technical scheme, preferably, the weight ball is of a hollow structure, two liquid injection holes are formed in the upper end of the ball body, and the two liquid injection holes are screwed by two screw plugs respectively.
In the above technical solution, preferably, a pressure sensor is installed in the pipe of the liquid inlet, and the pressure sensor is connected with a power supply of the pump through an electric control system.
In the above technical scheme, preferably, when the liquid level rises and the valve is closed, the self-locking force-increasing hinge push-pull rod is coaxial with the sliding valve core and the valve liquid inlet pipeline, a right fulcrum of the force-increasing hinge push-pull rod is 2mm lower than a rotation axis of the self-locking force-increasing hinge plate, and a connecting line of the right fulcrum and the rotation axis forms an included angle of 6 degrees with the horizontal direction.
In the above technical solution, preferably, a circular arc rail is provided above the valve body frame, and when the valve performs the opening and closing action, the rotation pin slides along the circular arc rail.
In the above technical solution, preferably, two sides of the rotation pin and the tension spring fixing pin are respectively hung with a vibration-reducing auxiliary spring in a stretching state.
Based on the above, compared with the prior art, the invention has the following beneficial effects:
the valve closing control arm and the valve opening control arm are mutually independent in a mode that the hollow floating ball and the counterweight ball are mutually matched, the valve closing and opening are respectively controlled by utilizing the buoyancy of the hollow floating ball and the gravity of the counterweight ball, the two control arms are clear in work division, do not interfere with each other, and have clear opening and closing logic and excellent reliability; the pair of self-locking reinforcing hinge plates are hinged with the self-locking reinforcing push-pull rod, when the self-locking reinforcing hinge push-pull rod is coaxial with the sliding valve core and the valve liquid inlet pipeline, mechanical self locking is realized, and the closed state of the valve is not required to be maintained by magnetic force or other external force; the upper and lower positions of the liquid level are convenient to set and adjust, so that the control and the maintenance of the liquid level height difference in a larger preset range can be realized, namely, the pump does not work between the preset highest liquid level and the preset lowest liquid level, the consumption of a mechanical system and an electrical system is reduced, the defect of frequent opening and closing actions of a valve in a traditional control mode is avoided, the working efficiency of the pump is improved, the cavitation of an impeller and the electrical shock loss of an electrical control system in the pump are slowed down, the noise is reduced, and the service life of the valve is prolonged; the remote control system has the advantages that no external energy and external force are needed, a remote long-distance communication control cable and related electrical equipment are omitted, meanwhile, the influence of various uncertainty and adverse factors caused by long-distance electric signal transmission is avoided, the engineering cost is obviously optimized, the reliability of system operation is improved, the double-position adjustable self-protection quick valve opening and closing of the valve can be realized, the vibration and abrasion problems caused by opening and closing the valve in the existing control mode are avoided, and the remote control system has good practicability.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
FIG. 1 shows a simplified schematic of a two position steady state fluid level control device;
FIG. 2 shows a schematic diagram of the overall assembly of the various parts of a two-position steady state fluid level control device;
FIG. 3 is a schematic diagram showing the closing control process and closing state of the valve closing control arm;
FIG. 4 shows a schematic diagram of a valve in a self-locking state;
FIG. 5 shows a self-locking process control diagram with the fluid level raised to valve closure;
FIG. 6 shows a control diagram of the valve opening process after the liquid level is lowered.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
The present disclosure will now be discussed with reference to exemplary embodiments. The following examples are set forth in a description to provide those of ordinary skill in the art with a better understanding and are presented for purposes of illustration, and are not intended to limit the scope of the invention or any limitation on the specific implementations of the invention. The various embodiments may be mutually incorporated by reference without conflict.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment.
Fig. 1 shows a schematic diagram of a dual-position steady-state liquid level control device, and a first embodiment of the present invention relates to a dual-position steady-state liquid level control device, as shown in fig. 1, and the core of the present embodiment is that the device comprises: the valve comprises a valve 1, a sliding valve core 2, a valve body frame 3, a self-locking reinforcement hinge push-pull rod 4, a pair of self-locking reinforcement hinge plates 5, a valve closing control arm 7, a valve opening control arm 8, a hollow floating ball 9 and a counterweight ball 10, wherein the valve 1 is connected with the valve body frame 3 into a whole, the sliding valve core 2 is connected with one end of the self-locking reinforcement hinge push-pull rod 4, the other end of the self-locking reinforcement hinge push-pull rod 4 is connected with the pair of self-locking reinforcement hinge plates 5, and the valve closing control arm 7 and the valve opening control arm 8 are connected on the valve body frame 3.
Fig. 2 shows a schematic diagram of the general assembly of each part of a dual-position steady-state liquid level control device, which is used for explaining the working process of the dual-position steady-state liquid level control device provided by the invention by mutually matching the structures.
As shown in fig. 2, according to the embodiment of the second aspect of the present invention, the valve 1 includes a liquid inlet 101 and a liquid outlet 102, and the valve 1 is fixedly connected with the valve body frame 3.
In this embodiment, the valve 1 is fixedly connected with the valve body frame 3, and is not detachable, the upper end of the valve 1 is a liquid inlet 101, the lower end is a liquid outlet 102, and the valve 1 and the valve body frame 3 are integrated, so that the whole device can be fixedly installed at a proper position of the container 11 according to actual needs in use.
According to the embodiment of the third aspect of the present invention, the sliding valve core 2 is located inside the valve 1, and the front end of the sliding valve core 2 is the valve core rubber 201.
In the present embodiment, the valve core rubber 201 functions as: when the valve 1 is closed, the sliding valve core 2 can better seal the valve liquid inlet 101, so that the liquid level in the container 11 can be prevented from rising continuously due to liquid leakage, and the height exceeds the upper limit height.
According to the fourth aspect of the present invention, one end of the self-locking energizing hinge push-pull rod 4 is hinged with the sliding valve core 2, and the other end is hinged with a pair of self-locking energizing hinge plates 5. Namely, when the valve opening control arm 8 and the valve closing control arm 7 execute the opening and closing actions, the hinge connection part can freely rotate, and the valve core 1 is opened and closed through the self-locking reinforcement hinge push-pull rod 4.
According to the fifth aspect of the present invention, one end of the pair of self-locking force-increasing hinge plates 5 is connected to the valve body frame 3 through a fixed rotation pin 501, the other end of the pair of self-locking force-increasing hinge plates 5 is lapped on the valve body frame 3 through a rotation pin 502, and a tension spring fixing pin 503 is penetrated at the lower end of the valve body frame 3.
In the present embodiment, the positions of the fixed pivot pin 501 and the tension spring fixing pin 503 are fixed and immovable with respect to the valve body frame 3.
According to the embodiment of the sixth aspect of the present invention, fig. 3 is a schematic diagram showing a closing control process and a closing state of a valve closing control arm, wherein the valve closing control arm 7 and the valve body frame 3 are respectively provided with a circular arc-shaped hollow groove 701 and a circular arc-shaped hollow groove 301, the valve closing control arm 7, the valve opening control arm 8 and a pair of self-locking energizing hinge plates 5 are connected to the valve body frame 3 through a rotating pin 504, and when the valve performs a switching action, the rotating pin 504 slides along the circular arc-shaped hollow groove 701 and the circular arc-shaped hollow groove 301 on the valve body frame 3.
In this embodiment, as shown in fig. 3, a circular arc-shaped empty groove 701 is formed on the valve closing control arm 7, when the liquid level rises to the critical position of the valve closing control arm 7, the rotating pin 504 contacts with the right limit position of the circular arc-shaped empty groove 701, and the hollow floating ball 9 is pushed to rotate counterclockwise due to the action of the buoyancy force, so that the valve is gradually closed, when the liquid level gradually drops, the valve closing control arm 7 rotates clockwise, but because the circular arc-shaped empty groove 701 is formed on the valve closing control arm 7, the rotation of the valve closing control arm 7 has no influence on the pair of self-locking reinforcement hinge plates 5, namely, the hollow floating ball 9 does not influence on the valve along with the action and fluctuation of the water level drop after the valve is closed, the uniqueness of the valve closing state is ensured, and the control logic is clear.
According to the seventh aspect of the present invention, the hollow float 9 is connected to the tail end of the valve closing control arm 7 through a rigid float arm 901, and the end of the rigid float arm 901 away from the hollow float 9 is connected to the tail end of the valve closing control arm 7 through an adjusting bolt 902.
In this embodiment, the purpose of the rigid design of float arm 901 is: when the liquid level rises, the valve closing control arm 7 is pushed to enable the sliding valve core 2 to move towards the liquid inlet 101, and the valve is closed; the function of the adjusting bolt 902 is: the position of the floating ball 9 in the valve closing process can be adjusted according to the maximum liquid level to be maintained in engineering so as to find the optimal control point and realize the valve closing process.
According to the eighth aspect of the present invention, the weight ball 10 is connected to the tail end of the valve opening control arm 8 through a flexible rope 1002, and two ends of the flexible rope 1002 are respectively connected to the tail end of the valve opening control arm 8 and the weight ball 10 through two buckles 1003.
In this embodiment, the length of the flexible rope 1002 may be set according to actual needs, and when the difference between the upper limit of the liquid level and the lower limit of the liquid level to be maintained in the engineering is large, the flexible rope 1002 is set longer; conversely, when the difference between the upper level limit and the lower level limit to be maintained is small, the length of the cord 1002 can be set shorter. The upper and lower ends of the cord 1002 are connected to the valve opening control arm 8 and the snap ring 1003 on the weight ball 10 by two cord buckles 1004, respectively.
According to the ninth aspect of the present invention, the weight ball 10 has a hollow structure, and two injection holes are formed at the upper end of the ball, and the two injection holes are screwed by two plugs 1001 respectively.
In this embodiment, the purpose of opening the liquid injection hole at the upper end of the weight ball 10 is: the tension is conveniently adjusted by doping proper liquid into the counterweight ball 10 or controlling the volume of the liquid according to the density of the actual liquid or the tension required by pulling the valve to open the control arm 8, so that the counterweight ball is suitable for different liquid control and different use scenes; the two liquid injection holes are arranged, so that the advantages are that: when liquid is injected into one of the liquid injection holes, the other liquid injection Kong Chuqi keeps the air pressure balance in the weight ball 10, and prevents the liquid from being spilled when the liquid is mixed; the screw plug 1001 functions to close the fill port to prevent fluid from escaping, and at the same time, to allow for easy replacement, addition or reduction of fluid within the weighted ball 10.
According to an embodiment of the tenth aspect of the invention, a pressure sensor is arranged in the pipeline of the liquid inlet, and the pressure sensor is connected with the power supply of the pump through an electric control system.
In this embodiment, the pressure sensor has the function that when the liquid level is lowered and the sliding valve core 2 is opened, the pressure in the liquid inlet pipeline is lowered, the sensor is connected with the power supply of the pump through the electric control system to start supplying liquid into the container, and when the liquid level is raised and the sliding valve core 2 is closed, the electric control process is opposite.
According to an embodiment of the eleventh aspect of the present invention, fig. 4 shows a schematic diagram of a valve in a self-locking state, when the liquid level rises and the valve is closed, as shown in fig. 4, the self-locking force-increasing hinge push-pull rod 4 is coaxial with the sliding valve core 2 and a liquid inlet pipeline of the valve 1, a right pivot of the force-increasing hinge push-pull rod 4 is 2mm lower than a rotation axis of the pair of self-locking force-increasing hinge plates 5, and a connecting line of the right pivot and the rotation axis forms an included angle of 6 ° with a horizontal direction.
In this embodiment, actually, the above-mentioned sliding valve core 2, a pair of self-locking energizing hinge plates 5 and a self-locking energizing hinge push-pull rod 4 together form a sliding block hinge mechanism, when the valve is closed, the self-locking energizing hinge push-pull rod 4 is coaxial with the sliding valve core 2 and the liquid inlet pipeline of the valve 1, at this time, the self-locking energizing hinge push-pull rod 4 and the self-locking energizing hinge plates 5 are in a mechanical self-locking state, and if no external force acts on the right fulcrum of the self-locking energizing hinge push-pull rod 4, the sliding valve core 2 cannot move in the direction of opening the valve core; the right fulcrum of the force-increasing hinge push-pull rod 4 is 2mm lower than the rotation axes of the pair of self-locking force-increasing hinge plates 5, and the effect that the connecting line of the right fulcrum and the rotation axes forms an included angle of 6 degrees with the horizontal direction is to enhance the reliability of mechanical self-locking after the valve is closed.
According to the twelfth aspect of the present invention, a circular arc track is formed above the valve body frame 3, and the rotation pin 502 slides along the circular arc track when the valve performs the opening and closing operation.
In the present embodiment, when the valve opening control arm 8 and the valve closing control arm 7 perform the opening and closing operation, the pair of self-locking energizing hinge plates 5 rotate about the tension spring fixing pin 503, and at this time, the rotation pin 502 slides on the circular arc-shaped rail of the valve body frame 3.
According to the thirteenth embodiment of the present invention, the vibration-reducing auxiliary springs 6 are respectively hung on two sides of the rotation pin 502 and the tension spring fixing pin 503 in a stretched state.
In the present embodiment, the vibration reducing auxiliary spring 6 functions as: when the valve opening control arm 8 and the valve closing control arm 7 execute the opening and closing actions, the vibration-reducing auxiliary spring 6 can help the pair of self-locking reinforcement hinge plates 5 to rotate quickly to complete quick valve opening and valve closing, and meanwhile, the vibration-reducing auxiliary spring 6 can effectively reduce impact and vibration generated in the valve opening and valve closing processes and reduce noise.
With reference to all the above embodiments, the following describes the working principle and working process of a dual-position steady-state liquid level control device according to the present invention:
control of the maximum liquid level: fig. 5 shows a control diagram of a valve closing self-locking process, as shown in fig. 5, when the liquid level in the container 11 rises to approach the maximum height, the hollow floating ball 9 is not raised along with the rise of the liquid level due to the limitation of the installation position, the volume of the liquid submerged hollow floating ball 9 is gradually increased, so that the buoyancy of the liquid is gradually increased, when the buoyancy is increased to the component force along the direction of the floating ball arm 901 and is equal to the critical thrust pushing the valve closing control arm 901, the buoyancy continues to be increased, the valve closing control arm 901 is pushed to rotate anticlockwise, so that the pair of self-locking hinge push-pull rods 5 are pushed to rotate anticlockwise, the self-locking hinge push-pull rods 4 are pushed to move towards the valve liquid inlet 101 along with the sliding valve core 2, when the valve core rubber 201 contacts with the liquid inlet inside the valve 1, the liquid flow is blocked, the liquid inlet process is ended, the valve keeps a closed state and is self-locked, and the fact that the buoyancy of the lower counter weight ball 10 is always submerged in the liquid during the liquid level rising process, namely the gravity does not exert an influence on the closing process of the valve core 2.
Control of the minimum liquid level: fig. 6 shows a control diagram of the valve opening process when the liquid level is lowered to the valve opening, and from the analysis above, when the liquid level is raised to the maximum liquid level, the valve is closed, and the liquid no longer enters the container. As shown in fig. 6, the weight ball 10 has a hollow structure, and when in use, liquid is poured into the weight ball and is prepared to have the same specific gravity as the liquid, at this time, the liquid level gradually drops due to the reasons of use, volatilization, leakage and the like of the liquid, when the liquid level drops to the hollow floating ball 9 above the device to expose the liquid level, the buoyancy of the hollow floating ball 9 is very small, the component force of the buoyancy in the direction of the floating ball arm 901 can be ignored, namely, the valve closing control arm 7 is not subjected to thrust along the anticlockwise circumferential direction; at this time, the weight ball 10 is always submerged by liquid, the weight is equal to the buoyancy, the soft rope 1002 has no downward pulling force, and the weight ball has no effect on the sliding valve core 2; as the liquid level continues to drop, the weight ball 10 gradually exposes out of the liquid level, the buoyancy is reduced and disappears, the gravity of the weight ball 10 acts on the soft rope 1002, the traction valve opening control arm 8 rotates clockwise, the pair of self-locking reinforcing hinge plates 5 are pulled to rotate clockwise, the hinge connection of the sliding block hinge mechanism is stressed due to the structural specificity of the pair of self-locking reinforcing hinge plates 5, the self-locking is released, the sliding valve core 2 in the original closed state is opened, the liquid is injected, and the liquid level rises.
The liquid level continues to rise, and the process described above is continued, maintaining the liquid level in the vessel 11 within a suitable range.
Compared with the prior art, the beneficial effects of this embodiment lie in:
the valve closing control arm 7 and the valve opening control arm 8 are mutually independent in a mode that the hollow floating ball 9 and the counterweight ball 10 are mutually matched, the valve closing and opening are respectively controlled by utilizing the buoyancy of the hollow floating ball 9 and the gravity of the counterweight ball 10, the two control arms are clear in work division, do not interfere with each other, and have clear opening and closing logic and excellent reliability; the pair of self-locking reinforcing hinge plates 5 are hinged with the self-locking reinforcing push-pull rod 4, when the self-locking reinforcing hinge push-pull rod is coaxial with the sliding valve core and the valve liquid inlet pipeline, mechanical self locking is realized, and the closed state of the valve is not required to be maintained by magnetic force or other external force; the upper and lower positions of the liquid level are convenient to set and adjust, so that the control and the maintenance of the liquid level height difference in a larger preset range can be realized, namely, the pump does not work between the preset highest liquid level and the preset lowest liquid level, the consumption of a mechanical system and an electrical system is reduced, the defect of frequent opening and closing actions of a valve in a traditional control mode is avoided, the working efficiency of the pump is improved, the cavitation of an impeller and the electrical shock loss of an electrical control system in the pump are slowed down, the noise is reduced, and the service life of the valve is prolonged; the remote control system has the advantages that no external energy and external force are needed, a remote long-distance communication control cable and related electrical equipment are omitted, meanwhile, the influence of various uncertainty and adverse factors caused by long-distance electric signal transmission is avoided, the engineering cost is obviously optimized, the reliability of system operation is improved, the double-position adjustable self-protection quick valve opening and closing of the valve can be realized, the vibration and abrasion problems caused by opening and closing the valve in the existing control mode are avoided, and the remote control system has good practicability.
The foregoing description of the specific embodiments will provide further details of the purposes of the present invention, and it should be understood that the foregoing embodiments are illustrative of the implementations, and are not intended to limit the scope of the present invention, as any changes, modifications, substitutions and alterations herein described may be made by those having ordinary skill in the art without departing from the principles and spirit of the invention.
Claims (11)
1. A dual position steady state fluid level control device comprising:
the valve is connected with the valve body frame into a whole, the sliding valve core is connected with one end of the self-locking reinforcement hinge push-pull rod, the other end of the self-locking reinforcement hinge push-pull rod is connected with the pair of self-locking reinforcement hinge plates, and the valve closing control arm and the valve opening control arm are connected to the valve body frame;
one end of the self-locking boosting hinge push-pull rod is hinged with the sliding valve core, and the other end of the self-locking boosting hinge push-pull rod is hinged with the pair of self-locking boosting hinge plates;
one end of the pair of self-locking reinforcement hinge plates is connected with the valve closing control arm and the valve opening control arm through a fixed rotating pin;
the valve closing control arm, the valve opening control arm and the pair of self-locking reinforcing hinge plates are connected to the valve body frame through a rotating pin, and when the valve performs a switching action, the rotating pin slides along the circular arc-shaped empty groove on the valve body frame;
the hollow floating ball is connected with the tail end of the valve closing control arm through a rigid floating ball arm;
the counterweight ball is connected with the tail end of the valve opening control arm through a soft rope.
2. The dual position steady state fluid level control device of claim 1, wherein:
the valve comprises a liquid inlet and a liquid outlet, and the valve is fixedly connected with the valve body frame.
3. The dual position steady state fluid level control device of claim 1, wherein:
the sliding valve core is positioned in the valve, and the front end of the sliding valve core is made of valve core rubber.
4. The dual position steady state fluid level control device of claim 1, wherein:
the other ends of the pair of self-locking reinforcement hinge plates are lapped on the valve body frame through a rotating pin, and the lower end of the valve body frame is provided with a tension spring fixing pin.
5. The dual position steady state fluid level control device of claim 1, wherein:
one end of the rigid floating ball arm, which is far away from the hollow floating ball, is connected with the tail end of the valve closing control arm through an adjusting bolt.
6. The dual position steady state fluid level control device of claim 1, wherein:
and two ends of the soft rope are respectively connected with the tail end of the valve opening control arm and the counterweight ball through two buckles.
7. The dual position steady state fluid level control device of claim 1, wherein:
the weight ball is of a hollow structure, two liquid injection holes are formed in the upper end of the ball body, and the two liquid injection holes are screwed by two screw plugs respectively.
8. The dual position steady state fluid level control device of claim 2, wherein:
the pressure sensor is arranged in the pipeline of the liquid inlet and is communicated with the power supply of the pump through the electric control system.
9. The dual position steady state fluid level control device of claim 1, wherein:
when the liquid level rises and the valve is closed, the self-locking reinforcement hinge push-pull rod is coaxial with the sliding valve core and the liquid inlet pipeline of the valve, the right fulcrum of the self-locking reinforcement hinge push-pull rod is 2mm lower than the rotation axis of the self-locking reinforcement hinge plate, and the connecting line of the right fulcrum and the rotation axis forms an included angle of 6 degrees with the horizontal direction.
10. The dual position steady state fluid level control device of claim 4, wherein:
and a circular arc-shaped track is arranged above the valve body frame, and when the valve performs a switching action, the rotating pin slides along the circular arc-shaped track.
11. The dual position steady state fluid level control device of claim 4, wherein:
and the two sides of the rotating pin and the tension spring fixing pin are respectively hung with a vibration-reducing auxiliary spring in a stretching state.
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| CN202111254738.7A CN113983229B (en) | 2021-10-27 | 2021-10-27 | Double-position steady-state liquid level control device |
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| CN202111254738.7A CN113983229B (en) | 2021-10-27 | 2021-10-27 | Double-position steady-state liquid level control device |
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| GB1216087A (en) * | 1967-11-24 | 1970-12-16 | Rainbow Valve Company Ltd | Improvements in or relating to float-controlled valve devices |
| DE2501713A1 (en) * | 1975-01-17 | 1976-07-22 | Gestra Ksb Vertrieb Gmbh | FLOAT CONTROLLED VALVE WITH COMPENSATION WEIGHT |
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| CN212004507U (en) * | 2020-04-08 | 2020-11-24 | 西安热工研究院有限公司 | Float valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2547069B (en) * | 2016-11-17 | 2018-03-07 | Ralph Smith Jason | Liquid level control device |
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2021
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| GB1216087A (en) * | 1967-11-24 | 1970-12-16 | Rainbow Valve Company Ltd | Improvements in or relating to float-controlled valve devices |
| DE2501713A1 (en) * | 1975-01-17 | 1976-07-22 | Gestra Ksb Vertrieb Gmbh | FLOAT CONTROLLED VALVE WITH COMPENSATION WEIGHT |
| CN2465217Y (en) * | 2001-02-15 | 2001-12-12 | 吴得昌 | Float ball switch |
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