Cantilever separation structure permanent magnet type nozzle baffle electrical conversion module

Abstract

The utility model discloses an industrial flow control field's cantilever separation structure permanent magnet type nozzle baffle electrical conversion module, including casing, solenoid, nozzle, valve rod, baffle, pressing plate, magnetically conductive pole, valve rod is fixed on the casing, and nozzle is fixed on the valve rod, and gas can flow into valve rod and flow from the nozzle, baffle is fixed on the casing, forms a cantilever beam structure, and under the electromagnetic force effect of solenoid, it happens bending to reach the purpose of adjusting gas pressure and flow to shield the gas at nozzle outlet. The utility model designs the baffle into cantilever beam structure, and the manufacturing process of baffle is simplified, and the manufacturing cost of electrical conversion module is reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial flow control, and in particular to an electrical conversion module for a cantilevered, separated permanent magnet nozzle baffle. Background Technology

[0002] Valve positioners, as key accessories for pneumatic control valves, play a vital role in improving the operational quality of control valves. Valve positioners can be categorized into pneumatic valve positioners, electric valve positioners, and intelligent valve positioners based on their input signals. Currently, in chemical production processes, pneumatic and electric valve positioners are used less frequently; over 95% of control valves utilize intelligent valve positioners to regulate valve opening.

[0003] The key component of an intelligent valve positioner is the electrical conversion module, whose main function is to convert electrical signals into pneumatic signals. By amplifying the back pressure and flow control of the nozzle, it provides sufficient power to operate the pneumatic regulating valve. The accuracy, real-time performance, reliability, vibration resistance, and low power consumption of the electrical conversion module directly affect the overall performance of the valve positioner. Designing a superior electrical conversion module is crucial for achieving intelligent valve positioner operation.

[0004] Traditional electrical conversion modules typically regulate gas pressure and flow by using baffles to block nozzles. These baffles are usually connected to the housing by springs, and their shape and manufacturing process are relatively complex. Improving these baffles could potentially further reduce the cost of electrical conversion modules. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a reed-type nozzle baffle soft magnetic electrical conversion module, which designs the baffle as a cantilever beam structure, thereby reducing the manufacturing cost of the electrical conversion module.

[0006] The technical solution of this utility model is as follows:

[0007] An electrical conversion module for a cantilevered, separated permanent magnet nozzle baffle includes a housing 1, an electromagnetic coil 2, a nozzle 3, a valve stem 4, a baffle 5, a pressure plate 6, a magnetic rod 7, a magnet 8, a baffle fixing screw 9, and a limiting screw 10.

[0008] The housing 1 is composed of a base plate 11, baffle mounting posts 12, and limiting posts 13. The cross-section is "U". The bottom is the base plate 11, and the two sides are the baffle mounting posts 12 and the limiting posts 13, respectively. The base plate 11 is a rectangular thin plate, and the baffle mounting posts 12 and the limiting posts 13 are cuboids. The baffle mounting posts 12 and the limiting posts 13 are parallel to each other and perpendicular to the base plate 11.

[0009] The electromagnetic coil 2 is located between the baffle mounting post 12 and the limiting post 13, and the central axis of the electromagnetic coil 2 is perpendicular to the base plate 11; the valve stem 4 is a hollow cylindrical structure, located between the baffle mounting post 12 and the electromagnetic coil 2, and the central axis of the valve stem 4 is perpendicular to the base plate 11; a through hole is provided at the bottom of the base plate 11, and the valve stem 4 and the electromagnetic coil 2 respectively pass through the inside of the through hole and are tangent to the inner wall of the through hole;

[0010] The nozzle 3 is fixed to the top of the valve stem 4. When gas flows into the valve stem 4 from below the base plate 10, it flows out from the nozzle 3.

[0011] The top end of the baffle mounting post 12 is provided with a baffle fixing hole 14; the top end of the limiting post 13 is provided with a limiting hole 15; a limiting screw 10 is adapted to be connected inside the limiting hole 15.

[0012] The baffle 5 is a thin plate structure with a through hole at its top; the pressure plate 6 is a rectangular thin plate structure with a through hole at its top; the baffle fixing screw 9 passes through the through holes of the pressure plate 6 and the baffle 5 in sequence, connects to the baffle fixing hole 14 and tightens it, thereby fixing the baffle 5 to the baffle mounting post 12; the installed baffle 5 is a cantilever beam structure, with one end fixed and the other end able to move up and down, and the range of movement is limited between the upper end face of the limiting post 13 and the head of the limiting screw 10;

[0013] The magnetic rod 7 is a solid cylindrical structure and is fixed at the center of the electromagnetic coil 2. When the electromagnetic coil 2 is energized, the magnetic rod 7 is magnetized, and the electromagnetic coil 2 exerts a force on the baffle 5.

[0014] The magnet 8 is fixed on the top surface of the baffle 5 and directly above the magnetic rod 7; when the magnetic rod 7 is magnetized, the magnet 8 is driven by the electromagnetic force of the electromagnetic coil 2, causing the baffle 5 to bend towards the nozzle 3.

[0015] When the electromagnetic coil 2 is energized, the unfixed end of the baffle 5 bends downward under the combined action of its own elasticity and the force of the electromagnetic coil 2, reducing the distance between it and the nozzle 3, thereby increasing the pressure and decreasing the flow rate of the gas flowing out of the nozzle 3; when the current of the electromagnetic coil 2 reaches its maximum value, the baffle 5 completely blocks the nozzle 3, thereby increasing the pressure and decreasing the flow rate of the gas flowing out of the nozzle 3; when the electromagnetic coil 2 is not energized, the unfixed end of the baffle 5 moves upward under the action of its own elasticity, thereby decreasing the pressure and increasing the flow rate of the gas flowing out of the nozzle 3.

[0016] Furthermore, the shell 1, baffle 5, pressure plate 6 and magnetic rod 7 are all made of soft magnetic material.

[0017] Furthermore, the cross-section of the baffle 5 is T-shaped, and it is made by cutting a thin plate using CNC technology; the horizontal stroke of the T is used to fix the baffle 5, and is called the mounting section; the vertical stroke of the T is used for deformation under stress, and is called the cantilever section.

[0018] Furthermore, there are two fixing holes 14 on the baffle 5, which are set on the mounting section of the baffle 5; the magnet 8 is fixed on the cantilever section of the baffle 5.

[0019] Furthermore, a circuit board 16 is included; the circuit board 16 is used to adjust the current of the electromagnetic coil 2.

[0020] Furthermore, the circuit board 16 is fixed on the limiting post 13.

[0021] The beneficial technical effects of this utility model are as follows:

[0022] The baffle is designed as a regular polygonal structure, and multiple baffles are assembled from the same thin sheet of raw material and cut for production. This results in very little leftover material and a very high utilization rate of raw materials, thus saving expensive soft magnetic materials and reducing manufacturing costs. Attached Figure Description

[0023] Figure 1 It's an exploded view;

[0024] Figure 2 This is an exterior view.

[0025] In the figure, the correspondence between the component names and the attached drawing numbers is as follows: 1. Housing; 2. Electromagnetic coil; 3. Nozzle; 4. Valve stem; 5. Baffle; 6. Pressure plate; 7. Magnetic rod; 8. Magnet; 9. Baffle fixing screw; 10. Limiting screw; 11. Base plate; 12. Baffle mounting post; 13. Limiting post; 14. Baffle fixing hole; 15. Limiting hole; 16. Circuit board. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Exploded view of the embodiment is as follows Figure 1 As shown, it consists of a housing 1, an electromagnetic coil 2, a nozzle 3, a valve stem 4, a baffle 5, a pressure plate 6, a magnetic rod 7, a magnet 8, a baffle fixing screw 9, and a limit screw 10. The completed appearance is shown in the diagram. Figure 2 As shown.

[0028] like Figure 1As shown in the figure, the housing 1 is formed by connecting a bottom plate 11, a baffle mounting post 12 and a limiting post 13. The bottom plate 11 is in the shape of a rectangular thin plate, and the baffle mounting post 12 and the limiting post 13 are in the shape of a cuboid. The relative positions of the three meet the following conditions:

[0029] (1) The baffle mounting post 12 and the limiting post 13 are parallel to each other and perpendicular to the bottom plate 11;

[0030] (2) The baffle mounting post 12 and the limiting post 13 are respectively connected to one end face of the bottom plate 11, so that the cross-section of the housing 1 forms a "U" shape.

[0031] The valve stem 4 is a hollow cylindrical structure, and gas can flow through the inside of the valve stem. The electromagnetic coil 2 and the valve stem 4 are fixed on the bottom plate 11 and are located between the baffle mounting post 12 and the limiting post 13 (i.e., in the middle of the "U" shape). The arrangement order of the four is: baffle mounting post 12, valve stem 4, electromagnetic coil 2, limiting post 13. The central axes of the electromagnetic coil 2 and the valve stem 4 are both perpendicular to the bottom plate 11.

[0032] The nozzle 3 is fixed on the end face of the valve stem 4 away from the bottom plate 11. Gas flows into the valve stem 4 from below the bottom plate 11 and then flows out from the nozzle 3.

[0033] There are 2 baffle fixing holes 14 on the end face of the baffle mounting post 12 away from the bottom plate 11 for fixing the baffle 5. There is 1 limiting hole 15 on the end face of the limiting post 13 away from the bottom plate 11. A limiting screw 10 is connected to the limiting hole 15, and the limiting screw 10 is not tightened to ensure that its head does not contact the upper end face of the limiting post 13.

[0034] The baffle 5 is cut from a thin plate, and its cross-section is a "T" shape. The horizontal stroke area of the "T" shape is called the installation section, and there are 2 through holes. When the baffle 5 is placed flat on the baffle mounting post 12, these 2 through holes just correspond to the baffle fixing holes 14 of the baffle mounting post 12 one by one; the vertical stroke area of the "T" shape is called the cantilever section for force deformation. The pressing plate 6 is a rectangular thin plate structure and also has 2 through holes, which just correspond to the through holes of the baffle 5 one by one. The baffle fixing screw 9 passes through the through holes of the pressing plate 6 and the baffle 5 in sequence, connects to the baffle fixing hole 14 and is tightened, thereby fixing the baffle 5 on the baffle mounting post 12. After installation, the baffle 5 is a cantilever beam structure, with one end fixed and the other end movable up and down, and the movement range is limited between the upper end face of the limiting post 13 and the head of the limiting screw 10.

[0035] Designing baffle 5 as a cantilever beam structure reduces its own elasticity, simplifies its manufacturing process, and lowers manufacturing costs. Because baffle 5 is produced using CNC cutting, many baffles 5 are first assembled onto a single sheet of raw material, and then cut all at once. If the shape of baffle 5 is a regular polygonal structure, the amount of material remaining after cutting will be minimal. Compared to a curved structure design, this embodiment effectively saves on expensive soft magnetic materials.

[0036] However, to further reduce the elasticity of the baffle 5, it needs to be made very thin. However, the thinner the baffle 5, the easier it is for the internal magnetic field strength to saturate when magnetized, thus affecting the force exerted by the electromagnetic coil 2 on the baffle 5. To solve this problem, a magnetic rod 7 and a magnet 8 are provided. The magnetic rod 7 is a solid cylindrical structure fixed at the center of the electromagnetic coil 2. When the electromagnetic coil 2 is energized, the magnetic rod 7 is magnetized, enhancing the force exerted by the electromagnetic coil 2 on the baffle 5. The magnet 8 is fixed to the cantilever section of the baffle 5, positioned directly above the magnetic rod 7. When the magnetic rod 7 is magnetized, the magnet 8 is acted upon by the electromagnetic force of the electromagnetic coil 2, driving the baffle 5 to bend towards the nozzle 3.

[0037] The circuit board 16 is fixed on the limiting post 13 and is used to adjust the current of the electromagnetic coil 2.

[0038] When the electromagnetic coil 2 is energized, the unfixed end of the baffle 5 bends downward under the combined action of its own elasticity and the force of the electromagnetic coil 2, reducing the distance between it and the nozzle 3, thereby increasing the pressure and decreasing the flow rate of the gas flowing out of the nozzle 3; when the current of the electromagnetic coil 2 reaches its maximum value, the baffle 5 completely blocks the nozzle 3, thereby increasing the pressure and decreasing the flow rate of the gas flowing out of the nozzle 3; when the electromagnetic coil 2 is not energized, the unfixed end of the baffle 5 moves upward under the action of its own elasticity, thereby decreasing the pressure and increasing the flow rate of the gas flowing out of the nozzle 3.

[0039] The housing 1, baffle 5, pressure plate 6 and magnetic rod 7 are all made of soft magnetic material. When the electromagnetic coil 2 is energized, all four will be magnetized, thereby enhancing the force of the electromagnetic coil 2 on the baffle 5 and reducing power consumption.

[0040] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details.

Claims

1. A cantilever separation structure permanent magnet type nozzle baffle electrical conversion module, characterized in that: It includes a housing (1), an electromagnetic coil (2), a nozzle (3), a valve stem (4), a baffle (5), a pressure plate (6), a magnetic guide rod (7), a magnet (8), a baffle fixing screw (9) and a limit screw (10); The housing (1) is composed of a bottom plate (11), a baffle mounting column (12) and a limit column (13), with a "U" - shaped cross - section, the bottom is the bottom plate (11), and the two sides are the baffle mounting column (12) and the limit column (13) respectively; the bottom plate (11) is in the shape of a rectangular thin plate, and the baffle mounting column (12) and the limit column (13) are in the shape of a cuboid; the baffle mounting column (12) and the limit column (13) are parallel to each other and perpendicular to the bottom plate (11); The electromagnetic coil (2) is located between the baffle mounting column (12) and the limit column (13), and the central axis of the electromagnetic coil (2) is perpendicular to the bottom plate (11); the valve stem (4) is a hollow cylindrical structure, located between the baffle mounting column (12) and the electromagnetic coil (2), and the central axis of the valve stem (4) is perpendicular to the bottom plate (11); a through - hole is drilled through the bottom of the bottom plate (11), and the valve stem (4) and the electromagnetic coil (2) respectively pass through the inside of the through - hole and are tangent to the inner wall of the through - hole; The nozzle (3) is fixed at the top of the valve stem (4). When gas flows into the valve stem (4) from below the bottom plate (11) and then flows out from the nozzle (3); A baffle fixing hole (14) is opened at the top of the baffle mounting column (12); a limit hole (15) is opened at the top of the limit column (13); a limit screw (10) is fitted and connected inside the limit hole (15); The baffle (5) is a thin plate structure, and a through - hole is drilled through the top of the baffle (5); the pressure plate (6) is a rectangular thin plate structure, and a through - hole is drilled through the top of the pressure plate (6); the baffle fixing screw (9) sequentially passes through the through - holes of the pressure plate (6) and the baffle (5), connects to the baffle fixing hole (14) and is tightened, thereby fixing the baffle (5) on the baffle mounting column (12); the installed baffle (5) is a cantilever beam structure, one end is fixed and the other end can move up and down, and the movement range is limited between the upper end face of the limit column (13) and the head of the limit screw (10); The magnetic guide rod (7) is a solid cylindrical structure, fixed at the center of the electromagnetic coil (2); when the electromagnetic coil (2) is powered on, the magnetic guide rod (7) is magnetized, and the electromagnetic coil (2) generates a force on the baffle (5); The magnet (8) is fixed on the top surface of the baffle (5) and directly above the magnetic guide rod (7); when the magnetic guide rod (7) is magnetized, the magnet (8) is affected by the electromagnetic force of the electromagnetic coil (2) and drives the baffle (5) to bend towards the nozzle (3); When the electromagnetic coil (2) is energized, the unfixed end of the baffle (5) bends downward under the combined action of its own elastic force and the force of the electromagnetic coil (2), reducing the distance between it and the nozzle (3), thereby increasing the pressure and decreasing the flow rate of the gas flowing out of the nozzle (3); when the current of the electromagnetic coil (2) reaches its maximum value, the baffle (5) completely blocks the nozzle (3), thereby increasing the pressure and decreasing the flow rate of the gas flowing out of the nozzle (3); when the electromagnetic coil (2) is not energized, the unfixed end of the baffle (5) moves upward under the action of its own elastic force, thereby increasing the pressure and decreasing the flow rate of the gas flowing out of the nozzle (3).

2. The cantilevered separation structure permanent magnet type nozzle baffle electrical conversion module according to claim 1, characterized in that, The shell (1), baffle (5), pressure plate (6) and magnetic rod (7) are all made of soft magnetic material.

3. The cantilevered separation structure permanent magnet type nozzle baffle electrical conversion module according to claim 1, characterized in that: The cross-section of the baffle (5) is T-shaped and is made by cutting a thin plate using CNC technology; the horizontal stroke of the T is used to fix the baffle (5) and is called the installation section; the vertical stroke of the T is used for deformation under stress and is called the cantilever section.

4. The cantilevered separation structure permanent magnet type nozzle baffle electrical conversion module according to claim 3, characterized in that: The number of baffle fixing holes (14) is 2, which are set on the mounting section of the baffle (5); the magnet (8) is fixed on the cantilever section of the baffle (5).

5. The cantilevered separation structure permanent magnet type nozzle baffle electrical conversion module according to claim 1, characterized in that: Includes a circuit board (16); the circuit board (16) is used to regulate the current of the electromagnetic coil (2).

6. The cantilevered separation structure permanent magnet type nozzle baffle electrical conversion module according to claim 5, characterized in that, The circuit board (16) is fixed on the limiting post (13).

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