Reverse osmosis produced water adjustable automatic recovery pressure relief device and method

Abstract

The invention discloses a pressure relief device and method for adjustable and automatic recovery of reverse osmosis produced water. The pressure relief device comprises a first pipeline, a second pipeline, a gravity ball, a two-way valve and an electromagnetic force adjustable module, the upper end of the first pipeline is communicated with the lower end of the second pipeline, an electromagnetic chuck is arranged at the upper end of the second pipeline, the upper side of the first pipeline is of a variable cross-section structure, the area of the cross section of the upper side of the first pipeline is gradually reduced from top to bottom, the gravity ball is located in the variable cross-section structure, and the side face of the second pipeline is connected with a third pipeline through a two-way valve. The third pipeline is connected with a trench, the electromagnetic force adjustable module is connected with the electromagnetic chuck, and the device and the method can realize adjustment of reverse osmosis pressure relief.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment in thermal power plants, and relates to a pressure relief device and method for reverse osmosis water production with adjustable automatic recovery. Background Art

[0002] When the reverse osmosis water back pressure is high, it will exceed the bearing capacity of the reverse osmosis membrane and related equipment, resulting in damage to the membrane assembly and other components, shortening the service life of the equipment. At the same time, excessive pressure may affect the separation effect of the reverse osmosis membrane, resulting in a decrease in the quality of the produced water and failure to achieve the expected effect. Continuous high pressure may cause system failure. Therefore, when the reverse osmosis water back pressure exceeds a certain pressure, pressure relief is required. Currently, a fixedly installed bursting membrane is used for reverse osmosis water pressure relief. However, the bursting membrane cannot be used again after it bursts at the set pressure. A new bursting membrane needs to be replaced, which has high maintenance costs. The operating pressure of the bursting membrane is relatively fixed, making it difficult to achieve precise control and regulation of the pressure. Once the bursting membrane ruptures, the system will suddenly release pressure, which may cause the entire reverse osmosis system to suddenly shut down, affecting production continuity. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a reverse osmosis water production adjustable automatic recovery pressure relief device and method, which can achieve the regulation of reverse osmosis pressure relief.

[0004] To achieve the above-mentioned purpose, the present invention discloses a reverse osmosis water production adjustable automatic recovery pressure relief device, comprising a first pipeline, a second pipeline, a gravity ball, a two-way valve and an electromagnetic force adjustable module;

[0005] The upper end of the first pipeline is connected with the lower end of the second pipeline, and an electromagnetic suction cup is arranged at the upper end of the second pipeline. The upper side of the first pipeline is a variable cross-section structure, and the cross-sectional area of ​​the upper side of the first pipeline gradually decreases from top to bottom. The gravity ball is located in the variable cross-section structure. The side of the second pipeline is connected to the third pipeline through a two-way valve, and the third pipeline is connected to a trench. The electromagnetic force adjustable module is connected to the electromagnetic suction cup.

[0006] The further improvement of the reverse osmosis water production adjustable automatic recovery pressure relief device of the present invention is:

[0007] Furthermore, the first pipeline is an L-shaped structure.

[0008] Furthermore, the diameter of the gravity ball is larger than the diameter of the lower end of the variable cross-section structure, and smaller than the diameter of the upper end of the variable cross-section structure.

[0009] Furthermore, the gravity ball includes a main body and a flexible material layer wrapped around the outside of the main body.

[0010] The present invention discloses a pressure relief method with adjustable automatic recovery of reverse osmosis water production, comprising the following steps:

[0011] Determine the maximum static friction force f of the gravity ball max ;

[0012] When reverse osmosis is operating normally, the electromagnetic suction cup exerts an upward magnetic force F on the gravity ball. 磁2 =G+f max -F 浮 -F 泄 , where F 浮 is the upward buoyancy of the gravity ball, F 泄 is the upward water leakage pressure of the gravity ball, G is the downward gravity of the gravity ball, and the output current of the electromagnetic force adjustable module is changed so that when the gravity ball just moves upward, the output current of the electromagnetic force adjustable module is A2;

[0013] During normal operation, the output current of the adjustable electric excitation module is A2. When the back pressure of the reverse osmosis water is higher than the set value, the gravity ball moves upward. At this time, the friction between the gravity ball and the second pipe gradually decreases until the gravity ball is no longer in contact with the second pipe. The gravity ball moves upward, and the reverse osmosis water enters the second pipe through the first pipe, and then enters the third pipe, and is finally discharged from the third pipe to achieve the purpose of pressure relief. After the pressure relief is completed, the adjustable electromagnetic force module is powered off, the gravity ball falls, and the second pipe is closed.

[0014] The further improvement of the reverse osmosis water production adjustable automatic recovery pressure relief method of the present invention is:

[0015] Furthermore, the maximum static friction force f of the gravity ball is determined max The process is:

[0016] Fill the first pipe with water, set the current of the electromagnetic force adjustable module, and gradually increase the output current of the electromagnetic force adjustable module until the electromagnetic suction cup makes the gravity ball just not in contact with the inside of the second pipe, and obtain the maximum static friction force f of the gravity ball max =F 磁1 +F 浮 -G, where F 磁1 is the upward attraction of the electromagnetic chuck on the gravity ball, F 浮 is the buoyancy of the gravity ball.

[0017] Furthermore, the buoyancy F on the gravity ball is 浮 =ρ 液 gV, where ρ 液 is the density of water, and V is the volume of the half gravity sphere in contact with water.

[0018] Furthermore, the first pipeline is an L-shaped structure.

[0019] Furthermore, the diameter of the gravity ball is larger than the diameter of the lower end of the variable cross-section structure, and smaller than the diameter of the upper end of the variable cross-section structure.

[0020] Furthermore, the gravity ball includes a main body and a flexible material layer wrapped around the outside of the main body.

[0021] The present invention has the following beneficial effects:

[0022] The reverse osmosis water production adjustable and automatically recovering pressure relief device and method described in the present invention, during specific operation, achieves the adjustable pressure relief required for different reverse osmosis back pressures by changing the current of the electromagnetic suction cup to change the electromagnetic force of the gravity ball, and simultaneously achieves the reverse osmosis back pressure protection function that automatically recovers after pressure relief, thereby reducing the difficulty of manual installation and operation after pressure relief. The device is reusable and improves the degree of automation of reverse osmosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural diagram of the present invention;

[0025] Figure 2 It is the force diagram of the gravity ball during the test of the maximum static friction in the present invention;

[0026] Figure 3 It is the force diagram of the gravity ball during pressure relief of the present invention.

[0027] Among them, 1 is an electromagnetic force adjustable module, 2 is an electromagnetic suction cup, 3 is a gravity ball, 4 is a two-way valve, 5 is a first pipeline, 6 is a second pipeline, and 7 is a third pipeline. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0032] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0033] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0036] As is known, the electromagnetic chuck is a machine tool accessory product that works on the electromagnetic principle. The following is a detailed introduction to the electromagnetic chuck: The electromagnetic chuck generates magnetic force by energizing the internal coil, and through the magnetic conductive panel, it tightly sucks the workpiece in contact with the surface of the panel. When the coil is powered off, the magnetic force disappears, thereby achieving demagnetization and removing the workpiece. The electromagnetic chuck is mainly composed of a bottom shell, an iron core, a coil, a panel, and a junction box. Among them, the electromagnet composed of the coil and the iron core is the main part of the electromagnetic chuck.

[0037] Embodiment 1

[0038] refer to Figure 1 The reverse osmosis water production adjustable automatic recovery pressure relief device of the present invention comprises an electromagnetic force adjustable module 1, an electromagnetic suction cup 2, a gravity ball 3, a two-way valve 4, a first pipeline 5, a second pipeline 6 and a third pipeline 7;

[0039] The upper end of the first pipe 5 is connected with the lower end of the second pipe 6, and an electromagnetic suction cup 2 is arranged at the upper end of the second pipe 6. The upper side of the first pipe 5 is a variable cross-section structure, and the cross-sectional area of ​​the upper side of the first pipe 5 gradually decreases from top to bottom. The gravity ball 3 is located in the variable cross-section structure. The side of the second pipe 6 is connected to the third pipe 7 through the two-way valve 4, and the third pipe 7 is connected to the ditch. The first pipe 5 is an L-shaped structure, and the electromagnetic force adjustable module 1 is connected to the electromagnetic suction cup 2.

[0040] As an implementation mode of the present invention, the diameter of the gravity ball 3 is larger than the diameter of the lower end of the variable cross-section structure, and smaller than the diameter of the upper end of the variable cross-section structure.

[0041] As an implementation manner of the present invention, the center line of the electromagnetic chuck 2 coincides with the center of the gravity ball 3 .

[0042] As an implementation mode of the present invention, the inlets of the third pipes 7 are distributed in parallel.

[0043] As an embodiment of the present invention, the gravity ball 3 includes a main body and a flexible material layer wrapped around the outside of the main body. The main body is made of metal. The flexible material layer can make the gravity ball 3 in close contact with the second pipe 6, with a good sealing effect and no water leakage under the allowable pressure.

[0044] During operation, the magnitude of the current in the electromagnetic chuck 2 is adjusted through the electromagnetic force adjustable module 1 to adjust the electromagnetic suction force of the electromagnetic chuck 2, and the magnitude of the current is proportional to the magnitude of the electromagnetic suction force.

[0045] Embodiment 2

[0046] refer to Figure 2 and Figure 3 The present invention discloses a reverse osmosis water production adjustable and automatically recoverable pressure relief method, which is implemented based on the reverse osmosis water production adjustable and automatically recoverable pressure relief system, which comprises a first pipeline 5, a second pipeline 6, a gravity ball 3, a two-way valve 4 and an electromagnetic force adjustable module 1; the upper end of the first pipeline 5 is connected to the lower end of the second pipeline 6, and an electromagnetic suction cup 2 is arranged on the upper end of the second pipeline 6. The upper side of the first pipeline 5 is a variable cross-section structure, and the cross-sectional area of ​​the upper side of the first pipeline 5 gradually decreases from top to bottom. The gravity ball 3 is located in the variable cross-section structure, and the side of the second pipeline 6 is connected to the third pipeline 7 through the two-way valve 4, and the third pipeline 7 is connected to the trench, and the electromagnetic force adjustable module 1 is connected to the electromagnetic suction cup 2.

[0047] Specifically, the reverse osmosis water production adjustable automatic recovery pressure relief method comprises the following steps:

[0048] Before the reverse osmosis is operated normally, the maximum static friction of the gravity ball 3 needs to be calibrated, and the calibration includes the following steps:

[0049] Fill the first pipe 5 with water, set the current of the electromagnetic force adjustable module 1, and slowly increase the output current of the electromagnetic force adjustable module 1 until the electromagnetic suction cup 2 makes the gravity ball 3 just not in contact with the inner wall of the second pipe 6. At this time, the current is A1 and the electromagnetic force is F. 磁1 The forces acting on the gravity ball 3 are: the upward attraction F of the electromagnetic chuck 2 磁1 , upward buoyancy F 浮 , downward gravity G and maximum downward static friction f max , these three forces are balanced forces, the volume and mass of the gravity ball 3 are known, so the upward buoyancy F 浮 According to the formula F 浮 =ρ 液 gV is calculated as follows: 液 is the density of water, V is the volume of half of the gravity ball 3 in contact with water, so the maximum static friction force f at this time max =F 磁1 +F 浮 -G.

[0050] The debugging steps of adjustable relief pressure are as follows:

[0051] When reverse osmosis is operating normally, the reverse osmosis water is under pressure, and the forces acting on the gravity ball 3 are: the upward attraction F of the electromagnetic chuck 2 磁2 , upward buoyancy F 浮 , upward water discharge pressure F 泄 , downward gravity G and maximum downward static friction f max At this time, the upward force required by the electromagnetic chuck 2 is F 磁2 =G+f max -F 浮 -F 泄 The pressure relief of reverse osmosis is known, and the surface area of ​​gravity ball 3 is known, so F 泄 It can be calculated that by changing the current of the electromagnetic force adjustable module 1 through the experiment, when the gravity ball 3 just moves upward, the current of the electromagnetic force adjustable module 1 is A2, and the upward force F of the electromagnetic chuck 2 corresponding to A2 is 磁2 When the reverse osmosis pressure relief pressure changes, the above steps can be performed to obtain the current of the electromagnetic force adjustable module 1, so that the reverse osmosis water pressure relief pressure can be adjusted.

[0052] When the electromagnetic force adjustable module 1 is in normal operation, the current is A2, and the upward force F of the electromagnetic chuck 2 corresponding to A2 is 磁2 When the reverse osmosis water back pressure is higher than the set value, the gravity ball 3 moves upward. At this time, the friction between the gravity ball 3 and the second pipe 6 gradually decreases until the gravity ball 3 and the second pipe 6 are no longer in contact. The friction is reduced to 0. The upward force F of the electromagnetic chuck 2 corresponding to A2 is 磁2 , due to f max The reduction and F 泄 The rise causes the force on the gravity ball 3 to be unbalanced, the upward force is greater than the downward force, causing the gravity ball 3 to move upward, and the reverse osmosis product water flows into the second pipe 6 through the first pipe 5, and then flows into the third pipe 7, and is discharged from the third pipe 7, thereby achieving the purpose of pressure relief. When the pressure relief is completed, the electromagnetic force adjustable module 1 is powered off, the electromagnetic suction cup 2 has no electromagnetic suction, and the gravity ball 3 returns to its original position.

[0053] When the present invention releases pressure through the gravity ball 3, the gravity ball 3 is located at the expansion pipe of the first pipe 5, and the water flows slowly into the third pipe 7 to achieve slow pressure relief.

[0054] The present invention has the following characteristics:

[0055] The present invention can achieve autonomous pressure relief of reverse osmosis water by changing the force on the gravity ball 3 under different conditions, and then achieve automatic recovery of the pressure relief device by changing the current size.

[0056] The present invention can be used for different reverse osmosis pressure relief by changing the magnitude of the current and the force on the gravity ball 3, and can be used for different reverse osmosis back pressure relief.

[0057] The invention can replace the traditional reverse osmosis pressure relief bursting membrane, does not need to manually reinstall the bursting membrane after pressure relief, can be recycled, and has good economy and environmental protection.

[0058] The invention releases pressure slowly during reverse osmosis water production pressure release, has little impact on the reverse osmosis device, and does not affect the normal operation of the reverse osmosis.

[0059] Embodiment 3

[0060] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the pressure relief method for adjustable automatic recovery of reverse osmosis water production are implemented. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus. The internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard structure bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provide instructions and data to the processor.

[0061] Embodiment 4

[0062] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the pressure relief method for adjustable automatic recovery of reverse osmosis water production are implemented. Specifically, the computer-readable storage medium includes, but is not limited to, for example, volatile memory and / or non-volatile memory. The volatile memory may include random access memory (RAM) and / or cache memory, etc. The non-volatile memory may include read-only memory (ROM), hard disk, flash memory, optical disk, magnetic disk, etc.

[0063] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0064] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0065] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0066] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0067] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0068] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0069] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A reverse osmosis water production adjustable automatic recovery pressure relief device, characterized in that: It comprises a first pipeline (5), a second pipeline (6), a gravity ball (3), a two-way valve (4) and an electromagnetic force adjustable module (1); The upper end of the first pipe (5) is connected to the lower end of the second pipe (6); an electromagnetic suction cup (2) is arranged at the upper end of the second pipe (6); the upper side of the first pipe (5) is a variable cross-section structure, and the cross-sectional area of ​​the upper side of the first pipe (5) gradually decreases from top to bottom; the gravity ball (3) is located in the variable cross-section structure; the side of the second pipe (6) is connected to the third pipe (7) through a two-way valve (4); the third pipe (7) is connected to a trench; and the electromagnetic force adjustable module (1) is connected to the electromagnetic suction cup (2).

2. The reverse osmosis water production adjustable automatic recovery pressure relief device according to claim 1, characterized in that: The first pipeline (5) is an L-shaped structure.

3. The reverse osmosis water production adjustable automatic recovery pressure relief device according to claim 1, characterized in that: The diameter of the gravity ball (3) is larger than the diameter of the lower end of the variable cross-section structure, and smaller than the diameter of the upper end of the variable cross-section structure.

4. The reverse osmosis water production adjustable automatic recovery pressure relief device according to claim 1, characterized in that: The gravity ball (3) comprises a main body and a flexible material layer wrapped around the outside of the main body.

5. A method for pressure relief with adjustable automatic recovery of reverse osmosis water production, characterized in that: The pressure relief device with adjustable automatic recovery of reverse osmosis water production according to claim 1 comprises the following steps: Determine the maximum static friction f of the gravity ball (3) max ; When the reverse osmosis is operating normally, the electromagnetic suction cup (2) exerts an upward magnetic attraction force F on the gravity ball (3). 磁2 =G+f max -F 浮 -F 泄 , where F 浮 is the upward buoyancy of the gravity ball (3), F 泄 is the upward water leakage pressure of the gravity ball (3), G is the downward gravity of the gravity ball (3), and the output current of the electromagnetic force adjustable module (1) is changed so that when the gravity ball (3) just moves upward, the output current of the electromagnetic force adjustable module (1) is A2; During normal operation, the output current of the adjustable electromagnetic excitation module (1) is A2. When the back pressure of the reverse osmosis water is higher than the set value, the gravity ball (3) moves upward. At this time, the friction between the gravity ball (3) and the second pipe (5) gradually decreases until the gravity ball (3) and the second pipe (6) are no longer in contact. The gravity ball (3) moves upward, and the reverse osmosis water enters the second pipe (6) through the first pipe (5), and then enters the third pipe (7), and is finally discharged from the third pipe (7) to achieve the purpose of pressure relief. After the pressure relief is completed, the adjustable electromagnetic force module (1) is powered off, the gravity ball 3 falls, and the second pipe (6) is closed.

6. The method for pressure relief with adjustable automatic recovery of reverse osmosis water production according to claim 5, characterized in that: The maximum static friction force f of the gravity ball (3) is determined max The process is: The first pipe (5) is filled with water, the current of the electromagnetic force adjustable module (1) is set, and the output current of the electromagnetic force adjustable module (1) is gradually increased until the electromagnetic suction cup (2) causes the gravity ball (3) to just not contact the inside of the second pipe (6), and the maximum static friction force f of the gravity ball (3) is obtained. max =F 磁1 +F 浮 -G, where F 磁1 is the upward attraction of the electromagnetic chuck (2) on the gravity ball (3), F 浮 is the buoyancy force on the gravity ball (3).

7. The method for pressure relief with adjustable automatic recovery of reverse osmosis water production according to claim 6, characterized in that: The buoyancy F on the gravity ball (3) 浮 =ρ 液 gV, where ρ 液 is the density of water, and V is the volume of the half gravity sphere (3) in contact with water.

8. The method for pressure relief with adjustable automatic recovery of reverse osmosis water production according to claim 5, characterized in that: The first pipeline (5) is an L-shaped structure.

9. The method for pressure relief with adjustable automatic recovery of reverse osmosis water production according to claim 5, characterized in that: The diameter of the gravity ball (3) is larger than the diameter of the lower end of the variable cross-section structure, and smaller than the diameter of the upper end of the variable cross-section structure.

10. The method for pressure relief with adjustable automatic recovery of reverse osmosis water production according to claim 5, characterized in that: The gravity ball (3) comprises a main body and a flexible material layer wrapped around the outside of the main body.

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