Ball valve device for controlling movement of a ferromagnetic ball
By controlling the movement of the ferromagnetic sphere by magnetic field, the problems of low fluid flow control accuracy and high leakage rate in the prior art are solved, and the precise adjustment and rapid response of fluid flow are achieved. It is suitable for microfluidic control systems and various industrial applications. .
Patent Information
- Application Number
- CN202421325314.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The prior art has problems with high leakage rate and low control accuracy in controlling fluid flow, especially in microfluidic control systems, which are difficult to achieve rapid response and low power consumption fluid regulation.
The movement of the ferromagnetic sphere is controlled by the magnetic field, and the free rolling of the sphere in the chamber and the attraction of the magnetic poles are used to control the fluid through different outlet channels, thereby achieving the regulation of the fluid flow.
It realizes precise control of fluid flow, reduces leakage rate, improves response speed, and is simple in structure and low in cost, suitable for a variety of industrial applications.
Smart Images
Figure CN222502778U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a ball valve device, in particular to a ball valve device which controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of a fluid. Background Art
[0002] The functions of valves include fluid flow regulation, opening and closing of fluid passages, switching of fluid paths, etc. Valves can be large or small, with characteristic dimensions ranging from several meters to several microns. Valves are crucial in all aspects of fluid machinery, microfluidics, and especially in fluid flow control. Due to their ability to regulate fluid flow, valves are widely used in water supply and drainage engineering, process industry, chemical industry, biomedical engineering and other fields. At present, the goals of valve design are low leakage, small dead volume, low power consumption, and fast response.
[0003] Depending on the initial state, valves can be divided into two types: normally open and normally closed. In addition, by adding a drive to the valve system, the flow of fluid can be actively controlled. The application and function of the valve depends on its structure, which is related to its actuation mechanism. For example, the Tesla valve consists of three sections of channels. When the fluid flows forward, the total pressure loss is very small, but when the fluid flows in the reverse direction, the loss is large. Therefore, the Tesla valve is a typical force-free valve. Microvalves in microfluidic systems often also have membranes for controlling the opening and closing of microchannels.
[0004] Depending on the driving source, valves suitable for different environments can be developed to achieve the target function. Common driving sources include: electric field, magnetic field, air pressure, surface acoustic wave and material properties. Valves that use magnetic field as the driving source have the characteristics of rapid response, high control accuracy and suitability for most industrial requirements, which makes magnetic valves have a large number of application scenarios. For example, the ferromagnetic sheet bends and deforms under the action of the magnetic field, which can open and close the fluid passage of the valve. The degree of deformation of the ferromagnetic sheet can be changed by adjusting the magnetic field strength, thereby controlling the opening and closing degree of the valve. Electromagnetic drive has the advantages of rapid microvalve response, high control accuracy and non-contact control, but the leakage rate is high, which makes it not as common as other more reliable drive methods in actual use. Summary of the invention
[0005] In order to solve the above technical problems, the utility model provides a ball valve device which has a simple structure, low cost and strong practicality and controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of a fluid.
[0006] The utility model solves the above-mentioned technical problem through the following technical solution: a ball valve device for controlling the movement of a ferromagnetic sphere by a magnetic field to control the flow of a fluid, comprising a main body, wherein the main body comprises an inlet channel, a first outlet channel and a second outlet channel, a chamber is arranged inside the main body, the inlet channel, the first outlet channel and the second outlet channel are all connected to the chamber, a magnetic sphere is arranged in the chamber, the sphere can roll freely in the chamber, and a magnetic pole is added to the outside of the main body at the connection between the first outlet channel and the chamber or at the connection between the second outlet channel and the chamber.
[0007] The above-mentioned ball valve device controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of a fluid, and there are connecting channels between the chamber and the first outlet channel and the second outlet channel, and the connecting channel is a circular cross-section channel whose cross-section gradually decreases from the chamber to the corresponding outlet channel; the diameter of the sphere is smaller than the diameter of the largest cross-section of the circular cross-section channel, and larger than the diameter of the smallest cross-section of the circular cross-section channel, so that when the sphere is attracted to move to the side where the magnetic pole is added, the outlet channel on the corresponding side is blocked.
[0008] The above-mentioned ball valve device controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of fluid. When a magnetic pole is added to the outside of the main body at the connection between the first outlet channel and the chamber, no magnetic pole is added to the outside of the main body at the connection between the second outlet channel and the chamber, so that the sphere in the chamber is only affected by the magnetic field force of one magnetic pole, and is thereby attracted to move toward the first outlet channel, ultimately blocking the first outlet channel, so that the fluid can only flow out through the second outlet channel.
[0009] The above-mentioned ball valve device controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of fluid. When a magnetic pole is added to the outside of the main body at the connection between the second outlet channel and the chamber, no magnetic pole is added to the outside of the main body at the connection between the first outlet channel and the chamber, so that the sphere in the chamber is only affected by the magnetic field force of one magnetic pole, and is thereby attracted to move toward the second outlet channel, ultimately blocking the second outlet channel, so that the fluid can only flow out through the first outlet channel.
[0010] The above-mentioned ball valve device that controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of fluid, the inlet channel, the first outlet channel and the second outlet channel are rectangular cross-sectional channels, square cross-sectional channels, circular cross-sectional channels, triangular cross-sectional channels or other polygonal cross-sectional channels.
[0011] In the ball valve device that controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of a fluid, when the magnetic pole is a permanent magnet, adding and removing the permanent magnet is achieved through mechanical control, and the mechanical control of the permanent magnet places the magnetic pole in a set position.
[0012] The ball valve device that controls the movement of a ferromagnetic ball through a magnetic field to control the flow of a fluid, when the magnetic pole is an electromagnet, controls whether the electromagnet's conductive coil is energized to determine whether the magnetic pole has magnetism.
[0013] The above-mentioned ball valve device that controls the movement of a ferromagnetic sphere through a magnetic field to control the flow of fluid, has multiple ball valve devices, and multiple ball valve devices are connected in series, parallel or mixed to form a fluid control mechanism for realizing fluid flow control of various functions and working conditions.
[0014] The beneficial effects of the utility model are as follows: the main body of the utility model comprises an inlet channel, a first outlet channel and a second outlet channel which are connected to the chamber; a magnetic sphere is provided in the chamber; by adding a magnetic pole, the sphere is affected by the attraction of the magnetic field of the magnetic pole and moves to one side of the magnetic pole to block the corresponding outlet channel, thereby allowing the fluid to flow out through the other outlet channel; thereby, by regulating and switching the magnetic poles, the purpose of controlling the fluid flow path by controlling the movement of the sphere is achieved; the utility model is simple and highly practical, and is of great significance for valves that regulate fluid flow. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the magnetic pole of the utility model being arranged at the connection between the first outlet channel and the chamber.
[0016] Figure 2 This is a schematic diagram of the magnetic pole of the utility model being arranged at the connection between the second outlet channel and the chamber. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] like Figure 1 As shown, a ball valve device for controlling the movement of a ferromagnetic sphere by a magnetic field to control the flow of a fluid comprises a body, wherein the body 1 comprises an inlet channel A, a first outlet channel C and a second outlet channel B, a chamber 2 is arranged inside the body 1, the inlet channel A, the first outlet channel C and the second outlet channel B are all connected to the chamber 2, a magnetic sphere 3 is arranged in the chamber 2, the sphere 3 can roll freely in the chamber 2, a magnetic pole 4 is added to the outside of the body 1 at the connection between the first outlet channel C and the chamber 2, and no magnetic pole 4 is added to the outside of the body 1 at the connection between the second outlet channel B and the chamber 2, so that the sphere 3 in the chamber 2 is only subjected to the magnetic field force of one magnetic pole 4, thereby being attracted to move toward the first outlet channel C, and finally blocking the first outlet channel C, so that the fluid can only flow out through the second outlet channel B.
[0019] There are connecting channels between the chamber 2 and the first outlet channel C and the second outlet channel B. The connecting channels are circular cross-section channels with a gradually decreasing cross-section from the chamber 2 to the corresponding outlet channel. The diameter of the sphere 3 is smaller than the diameter of the largest cross-section of the circular cross-section channel and larger than the diameter of the smallest cross-section of the circular cross-section channel, so that when the sphere 3 is attracted to move to the side where the magnetic pole 4 is added, the outlet channel on the corresponding side is blocked.
[0020] When a magnetic pole 4 is added outside the body 1 at the connection between the first outlet channel C and the chamber 2, the inlet channel A, the first outlet channel C and the second outlet channel B are rectangular cross-sectional channels, square cross-sectional channels, circular cross-sectional channels, triangular cross-sectional channels or other polygonal cross-sectional channels.
[0021] When the magnetic pole 4 is a permanent magnet, adding and removing the permanent magnet is achieved through mechanical control, and the mechanical control of the permanent magnet makes the magnetic pole 4 in a set position. For example, the mechanical control uses a telescopic motor, and the magnetic pole 4 is set on the telescopic motor. By controlling the extension and retraction of the telescopic motor, the magnetic pole 4 is placed in or away from the set position. When the magnetic pole 4 is an electromagnet, the magnetic pole 4 is magnetic by controlling whether the electromagnet conductive coil is energized.
[0022] like Figure 2 As shown, a magnetic pole 4 is added outside the body 1 at the connection between the second outlet channel B and the chamber 2. At this time, no magnetic pole 4 is added outside the body 1 at the connection between the first outlet channel C and the chamber 2, so that the sphere 3 in the chamber 2 is only affected by the magnetic field force of one magnetic pole 4, and is thereby attracted to move toward the second outlet channel B, eventually blocking the second outlet channel B, so that the fluid can only flow out through the first outlet channel C.
[0023] It should be noted that the number of ball valve devices can be multiple, and multiple ball valve devices can be connected in series, in parallel or in a mixed manner to form a fluid control mechanism for realizing fluid flow control of various functions and working conditions.
[0024] When the inlet channel A cannot allow the ball to pass through, the ball must be encapsulated in the chamber of the ball valve device during the processing of the ball valve device; when the inlet channel A can allow the ball to pass through, the ball can be encapsulated in the chamber of the ball valve device during the processing of the ball valve device, or after the ball valve device without the ball is processed, the ball can be introduced into the chamber through the inlet channel A.
[0025] The working process of the utility model is as follows: a catheter is connected to the inlet channel A, and a syringe pump for controlling the flow of the fluid is arranged on the catheter. Under the control of the syringe pump, the fluid enters the ball valve device through the inlet channel A and flows out from any one of the second outlet channel B and the first outlet channel C; when a magnetic pole 4 is added near the connection between the second outlet channel B and the chamber 2, no magnetic pole 4 is added near the connection between the first outlet channel C and the chamber 2, so that the ball 3 in the chamber 2 is affected by the magnetic field force of the magnetic pole 4, and is attracted to move toward the second outlet channel B, and finally blocks the second outlet channel B, so that the fluid can only flow out through the first outlet channel C on the other side. Control or switch the magnetic pole 4 to the connection between the first outlet channel C and the chamber 2, and the ball 3 will also block the first outlet channel C, so that the fluid flows out from the second outlet channel B; in this way, by regularly adjusting and controlling and switching the magnetic pole 4 (such as setting the interval time), the purpose of controlling the movement of the ball 3 by the magnetic field and thus controlling the fluid to flow in from the inlet channel A and flow out from the second outlet channel B or the first outlet channel C is achieved.
Claims
1. A ball valve device that controls the movement of a ferromagnetic ball by a magnetic field to control the flow of a fluid, characterized in that: The invention comprises a main body, which comprises an inlet channel, a first outlet channel and a second outlet channel. A chamber is arranged inside the main body, and the inlet channel, the first outlet channel and the second outlet channel are all connected to the chamber. A magnetic sphere is arranged in the chamber, and the sphere can roll freely in the chamber. A magnetic pole is added to the outside of the main body at the connection between the first outlet channel and the chamber or at the connection between the second outlet channel and the chamber.
2. The ball valve device for controlling the movement of a ferromagnetic ball to control the flow of a fluid by controlling the movement of a ferromagnetic ball by a magnetic field according to claim 1, characterized in that: There are connecting channels between the chamber and the first outlet channel and the second outlet channel. The connecting channels are circular cross-section channels with a gradually decreasing cross-section from the chamber to the corresponding outlet channel. The diameter of the sphere is smaller than the diameter of the largest cross-section of the circular cross-section channel and larger than the diameter of the smallest cross-section of the circular cross-section channel, so that when the sphere is attracted to move to the side where the magnetic pole is added, the outlet channel on the corresponding side is blocked.
3. The ball valve device for controlling the movement of a ferromagnetic ball to control the flow of a fluid by controlling the movement of a ferromagnetic ball by a magnetic field according to claim 2, characterized in that: When a magnetic pole is added to the outside of the main body at the connection between the first outlet channel and the chamber, no magnetic pole is added to the outside of the main body at the connection between the second outlet channel and the chamber, so that the sphere in the chamber is only affected by the magnetic field force of one magnetic pole, and is attracted to move toward the first outlet channel, eventually blocking the first outlet channel, so that the fluid can only flow out through the second outlet channel.
4. The ball valve device for controlling the movement of a ferromagnetic ball to control the flow of a fluid by controlling the movement of a ferromagnetic ball by a magnetic field according to claim 2, characterized in that: When a magnetic pole is added outside the main body at the connection between the second outlet channel and the chamber, no magnetic pole is added outside the main body at the connection between the first outlet channel and the chamber, so that the sphere in the chamber is only affected by the magnetic field force of one magnetic pole, and is attracted to move toward the second outlet channel, eventually blocking the second outlet channel, so that the fluid can only flow out through the first outlet channel.
5. The ball valve device for controlling the movement of a ferromagnetic ball to control the flow of a fluid by controlling the movement of a ferromagnetic ball by a magnetic field according to claim 2, characterized in that: The inlet channel, the first outlet channel and the second outlet channel are rectangular cross-section channels, square cross-section channels, circular cross-section channels, triangular cross-section channels or other polygonal cross-section channels.
6. The ball valve device for controlling the movement of a ferromagnetic ball to control the flow of a fluid by controlling the movement of a ferromagnetic ball by a magnetic field according to claim 2, characterized in that: When the magnetic poles are permanent magnets, adding and removing the permanent magnets is achieved through mechanical control, which mechanically controls the permanent magnets so that the magnetic poles are in set positions.
7. The ball valve device for controlling the movement of a ferromagnetic ball to control the flow of a fluid by controlling the movement of a ferromagnetic ball by a magnetic field according to claim 2, characterized in that: When the magnetic pole is an electromagnet, the magnetic pole is magnetic by controlling whether the electromagnet's conductive coil is energized.
8. The ball valve device for controlling the movement of a ferromagnetic ball to control the flow of a fluid by controlling the movement of a ferromagnetic ball by a magnetic field according to claim 2, characterized in that: There are multiple ball valve devices, and multiple ball valve devices are connected in series, in parallel or in a mixed manner to form a fluid control mechanism for realizing fluid flow control of multiple functions and working conditions.