A gear motor device for valve flow regulation

Abstract

The utility model relates to flow control technical field especially is a kind of for the speed reducer motor device of valve flow regulation, including shell, motor, valve core rotating shaft, angle capture module, speed sensor and host computer, the shell is configured with mounting bracket, motor is configured on mounting bracket, and the valve core rotating shaft of valve is driven by reduction gear set, the input end of the valve core rotating shaft is inserted into shell, the angle capture module is configured at the input end of the valve core rotating shaft to measure valve core current angle position information x1 and carry out upload to host computer, the speed sensor is configured on the pipeline downstream of valve to measure current medium flow rate information v and carry out upload to host computer. The technical problem that valve cannot monitor fluid flow rate control valve opening thereby accurately control fluid flow in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of flow control technology, and in particular to a geared motor device for regulating valve flow. Background Technology

[0002] Valves are critical accessories in industrial pipelines, capable of opening and closing pipelines, controlling flow direction, and adjusting delivery parameters. They are suitable for fluids such as gases, liquids, corrosive substances, and high-viscosity fluids, covering scenarios in civilian, petrochemical, and nuclear power industries. Their diverse structures and materials ensure the stable operation of fluid systems. Among them, the angle stroke valve is a common type of flow control valve. Its working principle is to change the flow area between the valve core and the valve seat to regulate the flow and pressure of media (liquids, gases, steam, etc.) or to cut off the pipeline.

[0003] The invention patent with application number 201210361449.1 discloses a manual adjustment handle that can lock itself at a specific position. The valve opening can be adjusted by rotating the handle, and the limiting teeth on the handle can lock itself in a fixed position at a specific position. However, the manual operation has low control precision, and can only rotate the valve core to a specific position and fix it. It cannot control the valve at all angles, and it relies on manual operation with low automation.

[0004] The utility model patent with application number 202520850787.4 discloses a valve with adjustable flow rate. The valve controls the fluid flow rate by rotating a worm gear driven by a motor, which in turn drives a turbine. The turbine is fixedly connected to the valve core. Although this method reduces the reliance on human labor, it lacks a sensing and control system and cannot monitor the fluid flow rate to control the valve opening and thus accurately control the fluid flow rate. Summary of the Invention

[0005] To address the technical problem in existing technologies where valves cannot monitor fluid velocity to control valve opening and thus accurately control fluid flow, this application proposes a geared motor device for valve flow regulation, which solves the aforementioned technical problem.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] This utility model provides a geared motor device for regulating valve flow, comprising: a housing, wherein a mounting bracket is disposed within the housing; a motor, wherein the motor is disposed on the mounting bracket and drives the valve core rotation shaft of the valve through a reduction gear set; a valve core rotation shaft, wherein the input end of the valve core rotation shaft extends into the housing; an angle capture module, wherein the angle capture module is disposed at the input end of the valve core rotation shaft to measure and upload the current angle position information x1 of the valve core; a speed sensor, wherein the speed sensor is disposed on the downstream pipeline of the valve to measure and upload the medium flow velocity information v; and a host computer, wherein the host computer receives the input preset flow value information Q in the downstream pipeline of the valve, the uploaded medium flow velocity information v, and the current angle of the valve core. The valve core's ideal angular position information x is calculated by comparing x with x1 using preset flow rate information Q and current medium flow velocity information v. The required rotation angle w of the valve core's rotating shaft is obtained by comparing x with x1, and the valve core's rotating shaft is rotated by the corresponding angle w using a motor. At this time, the angle capture module uploads the current angular position information x2 of the rotated valve core again, and the speed sensor also measures the current medium flow velocity information v1 again. The host computer recalculates the flow rate information Q1. If Q1 = Q, it means that the medium flow rate in the downstream pipeline of the valve has reached the preset value. Otherwise, the medium flow velocity information v and the current angular position information x1 of the valve core are uploaded repeatedly, and the valve core is rotated by the angle w until the medium flow rate in the downstream pipeline of the valve reaches the preset value.

[0008] Furthermore, the reduction gear set includes a drive gear disposed on the motor output shaft, a driven gear on the valve core rotation shaft, and a plurality of speed regulating gears engaged between the drive gear and the driven gear.

[0009] Furthermore, all of the speed regulating gears are double-toothed.

[0010] Furthermore, there are seven speed regulating gears in total, including a first gear that meshes directly with the driving gear, a second gear that meshes with the first gear, a third gear that meshes with the second gear, a fourth gear that meshes with the third gear, a fifth gear that meshes with the fourth gear, a sixth gear that meshes with the fifth gear, and a seventh gear that meshes with the sixth gear. The seventh gear meshes with the driven gear. The first, second, third, fourth, and fifth gears are of the same specification.

[0011] Furthermore, the first, third, and fifth gears are stacked, and the second and fourth gears are stacked.

[0012] Furthermore, the angle capture module includes a permanent magnet and a magnetic encoder. The permanent magnet is fixed to the input end face of the valve core rotation shaft, and the magnetic encoder is configured on the mounting bracket, with the Hall sensor of the magnetic encoder facing the permanent magnet.

[0013] Furthermore, the angle capture module includes an annular color strip and a photoelectric encoder. The annular color strip is fixed to the input end face of the valve core rotating shaft, the photoelectric encoder is configured on the mounting bracket, and the photoelectric sensor of the photoelectric encoder is configured opposite the annular color strip.

[0014] Furthermore, the motor is driven by a driver configured on a mounting bracket.

[0015] Furthermore, the shell is formed by joining two halves together.

[0016] Furthermore, the valve core is a door panel that covers the valve passage, and the valve core rotation shaft passes through the valve passage and is fixedly connected to the valve core.

[0017] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0018] This utility model discloses a geared motor device for valve flow regulation, equipped with an angle capture module and a speed sensor, which can quickly detect and react to changes in the flow rate of the medium; it can accurately detect the valve core position to achieve 360-degree control, and can finely adjust the valve opening to achieve more precise flow control; after inputting the preset flow value information in the downstream pipeline of the valve, it can maintain the stability of the valve opening for a long time without the need for manual detection and adjustment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the geared motor device for valve flow regulation according to this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of Example 1;

[0021] Figure 3 This is a schematic diagram of a valve;

[0022] Figure 4 This is a schematic diagram of the valve core;

[0023] Figure 5 A schematic diagram of one embodiment of a reduction gear set;

[0024] Figure 6 This is a flowchart illustrating the operation of the geared motor device for valve flow regulation according to this utility model.

[0025] Wherein: 1-House; 2-Motor; 3-Reduction gear set, 31-Drive gear, 32-Driven gear, 33-Gear No. 1, 34-Gear No. 2, 35-Gear No. 3, 36-Gear No. 4, 37-Gear No. 5, 38-Gear No. 6, 39-Gear No. 7; 4-Angle capture module, 41-Permanent magnet, 42-Magnetic encoder, 43-Hall sensor; 5-Valve core rotation shaft; 6-Speed ​​sensor; 7-Driver; 8-Valve, 81-Valve core. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] The formula for the volumetric flow rate of a fluid can be simplified to:

[0028] q=V*s

[0029] Where: q: flow rate; V: fluid velocity; s: flow cross-sectional area.

[0030] It can be seen that controlling the flow rate q is equivalent to controlling the fluid velocity V and the flow cross-sectional area s. However, controlling the fluid velocity V is more difficult, so the flow cross-sectional area is chosen as the control object.

[0031] like Figure 1-6As shown, this utility model provides a geared motor device for regulating valve flow, including a housing 1, a motor 2, a valve core rotation shaft 5, an angle capture module 4, a speed sensor 6, and a host computer. A mounting bracket is installed inside the housing 1. The motor 2 is mounted on the mounting bracket and drives the valve core rotation shaft 5 of the valve 8 via a reduction gear set 3. The input end of the valve core rotation shaft 5 extends into the housing 1. The angle capture module 4 is located at the input end of the valve core rotation shaft 5 to measure and upload the current angular position information x1 of the valve core 81. The speed sensor 6 is located on the downstream pipe of the valve 8 to measure and upload the medium flow velocity information v. The host computer receives the preset flow value information Q in the downstream pipe of the valve 8, the uploaded current medium flow velocity information v, and the current angular position information of the valve core 81. The system sets information x1, calculates the ideal angular position information x of valve core 81 by using preset flow rate information Q and medium flow velocity information v, compares x with x1 to obtain the required rotation angle w of valve core rotation shaft 5, and uses motor 2 to rotate valve core rotation shaft 5 by the corresponding angle w. At this time, angle capture module 4 uploads the current angular position information x2 of valve core 81 after rotation angle w, and speed sensor 6 also measures the current medium flow velocity information v1 again. The host computer recalculates the flow rate information Q1. If Q1 = Q, it means that the medium flow rate in the pipeline downstream of valve 8 has reached the preset value. Otherwise, it repeatedly uploads the medium flow velocity information v and the current angular position information x1 of valve core 81 and makes valve core 81 rotate angle w until the medium flow rate in the pipeline downstream of valve 8 reaches the preset value.

[0032] Note that x is a variable in each loop.

[0033] The reduction gear set 3 includes a drive gear 31 configured on the output shaft of the motor 2, a driven gear 32 on the valve core rotating shaft 5, and a plurality of speed regulating gears that cooperate between the drive gear 31 and the driven gear 32.

[0034] Preferably, the speed regulating gears are all double-toothed, which can make better use of space and reduce the overall volume of the reduction gear set 3.

[0035] Optionally, there are seven speed regulating gears, including gear 33 (directly meshing with drive gear 31), gear 34 (meshing with gear 33), gear 35 (meshing with gear 34), gear 36 (meshing with gear 35), gear 37 (meshing with gear 36), gear 38 (meshing with gear 37), and gear 39 (meshing with gear 38). Gear 39 meshes with driven gear 32. Gears 33, 34, 35, 36, and 37 are of the same specification. Gears 33, 35, and 37 are stacked, as are gears 34 and 36. The eight-stage reduction gear set uses nine gears, resulting in a large reduction ratio and a significant torque increase. This larger torque allows for greater flow rates and a wider range of applications.

[0036] Optionally, the number of transmission stages can be reduced by decreasing the number of speed regulating gears. The fewer the transmission stages, the simpler the structure of the reduction gear set 3. A simpler mechanical structure has a longer lifespan, is more stable, and has stronger anti-interference capabilities. For example, gears 35 and 36 can be omitted, and gear 1 33 can directly mesh with gear 36 to change the reduction ratio.

[0037] Example 1

[0038] like Figure 2 As shown, in this embodiment, the angle capture module 4 includes a permanent magnet 41 and a magnetic encoder 42. The permanent magnet 41 is fixed on the input end face of the valve core rotation shaft 5, and the magnetic encoder 42 is configured on the mounting bracket, with the Hall sensor 43 of the magnetic encoder 42 facing the permanent magnet 41.

[0039] Specifically, motor 2 is driven by driver 7, which is mounted on a mounting bracket.

[0040] Specifically, shell 1 is formed by the joining of two halves.

[0041] Specifically, the valve core 81 of valve 8 is a door panel that covers the passage of valve 8, and the valve core rotation shaft 5 passes through the passage of valve 8 and is fixedly connected to the valve core 81.

[0042] The speed sensor 6 can be an electromagnetic, turbine, ultrasonic, or laser flow sensor, or the speed sensor 6 can be directly replaced with a flow sensor.

[0043] The current medium flow velocity information v can be captured by the velocity sensor 6. The flow cross-sectional area of ​​the fluid is related to the opening degree of the valve core 81 of the valve 8. The permanent magnet 41, such as a magnet, can be fixed on the rotating shaft of the valve 8. After the Hall sensor 43 is calibrated to zero, the zero position of the valve core 81 when it is fully closed can be obtained. The position of the valve core 81 can be obtained by sensing the change of the magnetic field when the magnet rotates through the Hall sensor 43, thereby obtaining the flow cross-sectional area of ​​the fluid.

[0044] like Figure 6 As shown, the technical approach is as follows: Input the preset flow rate information Q in the downstream pipeline of valve 8, measure the current medium flow velocity information v, obtain the target fluid flow cross-sectional area using the fluid volume flow rate formula, calculate the required valve core 81 opening, i.e., calculate the ideal angular position information x of valve core 81, Hall sensor 43 measures the current angular position information x1 of valve core 81, and compares it with the required ideal angular position information x to obtain the angle w that valve core rotation shaft 5 needs to rotate. The host computer controls the driver 7 to drive the motor 2 to rotate, transmits the rotation to the reduction gear set 3, and then outputs it to the valve core rotation shaft 5 to adjust the valve 8 opening. After this process is completed, Hall sensor 43 captures the current angular position information x2 of valve core 81 again and uploads it to the host computer. If valve core 81 reaches the ideal position, motor 2 stops rotating and valve core 81 is locked in the current position. If the ideal position is not reached, the above process is repeated until valve core 81 reaches the ideal position.

[0045] The geared motor device for valve flow regulation in this embodiment is equipped with a speed and Hall sensor 43, which can quickly detect and react to changes in fluid flow. It has high control precision and can accurately detect the position of the valve core 81 to achieve 360-degree control. The position detection Hall sensor 43 can achieve a detection error of ±0.1° to ±0.35°, which can finely adjust the valve opening to achieve more precise flow control. It is autonomous and reduces human dependence. After being set in advance, it can maintain a stable valve opening for a long time without the need for manual detection and adjustment.

[0046] Example 2

[0047] In this embodiment, the angle capture module 4 includes an annular color strip and a photoelectric encoder. The annular color strip is fixed to the input end face of the valve core rotating shaft 5, and the photoelectric encoder is mounted on a mounting bracket, with the photoelectric sensor of the photoelectric encoder positioned opposite the annular color strip. Other technical features are the same as in Embodiment 1 and will not be repeated here.

[0048] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A geared motor device for regulating valve flow, characterized in that, include: A housing (1) is provided with a mounting bracket inside the housing (1); The motor (2) is mounted on a mounting bracket and drives the valve core rotation shaft (5) of the valve (8) via a reduction gear set (3); A valve core rotating shaft (5) has its input end extending into the housing (1); Angle capture module (4) is configured at the input end of the valve core rotation shaft (5) to measure the current angle position information x1 of the valve core (81) and upload it; A velocity sensor (6) is configured on a pipe downstream of the valve (8) to measure and upload medium flow velocity information v. The host computer receives the preset flow rate information Q in the downstream pipeline of valve (8), the uploaded medium flow rate information v, and the current angle position information x1 of valve core (81). It calculates the ideal angle position information x of valve core (81) by using the preset flow rate information Q and the current medium flow rate information v. It obtains the angle w that valve core rotation shaft (5) needs to rotate by comparing x with x1, and makes valve core rotation shaft (5) rotate by the corresponding angle w by motor (2). At this time, the angle capture module (4) uploads the current angle position information x2 of valve core (81) after rotation again. The speed sensor (6) also measures the current medium flow rate information v1 again, and the host computer recalculates the flow rate information Q1. If Q1 = Q, it means that the medium flow rate in the downstream pipeline of valve (8) has reached the preset value. Otherwise, it repeatedly uploads the medium flow rate information v and the current angle position information x1 of valve core (81) and makes valve core (81) rotate by the angle w until the medium flow rate in the downstream pipeline of valve (8) reaches the preset value.

2. The geared motor device for valve flow regulation according to claim 1, characterized in that, The reduction gear set (3) includes a drive gear (31) disposed on the output shaft of the motor (2), a driven gear (32) disposed on the valve core rotating shaft (5), and a plurality of speed regulating gears engaged between the drive gear (31) and the driven gear (32).

3. The geared motor device for valve flow regulation according to claim 2, characterized in that, All speed-regulating gears are double-toothed.

4. The geared motor device for valve flow regulation according to claim 3, characterized in that, There are seven speed regulating gears, including a first gear (33) that meshes directly with the drive gear (31), a second gear (34) that meshes with the first gear (33), a third gear (35) that meshes with the second gear (34), a fourth gear (36) that meshes with the third gear (35), a fifth gear (37) that meshes with the fourth gear (36), a sixth gear (38) that meshes with the fifth gear (37), and a seventh gear (39) that meshes with the sixth gear (38). The seventh gear (39) meshes with the driven gear (32). The first gear (33), second gear (34), third gear (35), fourth gear (36), and fifth gear (37) are of the same specification.

5. The geared motor device for valve flow regulation according to claim 4, characterized in that, The first gear (33), the third gear (35) and the fifth gear (37) are stacked, and the second gear (34) and the fourth gear (36) are stacked.

6. The geared motor device for valve flow regulation according to claim 1, characterized in that, The angle capture module (4) includes a permanent magnet (41) and a magnetic encoder (42). The permanent magnet (41) is fixed on the input end face of the valve core rotating shaft (5). The magnetic encoder (42) is arranged on the mounting bracket, and the Hall sensor (43) of the magnetic encoder (42) is facing the permanent magnet (41).

7. The geared motor device for valve flow regulation according to claim 1, characterized in that, The angle capture module (4) includes an annular color strip and a photoelectric encoder. The annular color strip is fixed on the input end face of the valve core rotating shaft (5). The photoelectric encoder is configured on the mounting bracket, and the photoelectric sensor of the photoelectric encoder is configured opposite the annular color strip.

8. The geared motor device for valve flow regulation according to claim 1, characterized in that, The motor (2) is driven by a driver (7) mounted on a mounting bracket.

9. The geared motor device for valve flow regulation according to claim 1, characterized in that, The shell (1) is formed by joining two halves together.

10. The geared motor device for valve flow regulation according to claim 1, characterized in that, The valve core (81) of the valve (8) is a door panel that covers the passage of the valve (8). The valve core rotation shaft (5) passes through the passage of the valve (8) and is fixedly connected to the valve core (81).

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