TWM497217U - Flow control valve with temperature sensing - Google Patents

Description

Temperature sensing flow control valve

The present invention relates to a temperature-sensing flow control valve, and more particularly to a flow control valve that automatically adjusts the flow rate of a fluid by temperature changes to maintain a good working condition.

A flow control valve is a common mechanical device having a fluid input end and a fluid output end. By blocking the size of the fluid introduced at the fluid input end, the fluid flow at the fluid output end is adjusted to obtain a desired flow control result. .

Conventional flow control valves are mostly controlled manually, depending on the required flow state, and the output flow of the fluid is changed in a timely manner. However, in the manual control mode, the adjustment cannot be made immediately, and the error is large, and it can only be applied to occasions where precise flow is not required.

In addition, there are many factors affecting the output flow of the fluid, including the fluid itself or the working environment. If the fluid or working environment is harmful to personnel, it cannot be applied to manual operation, and the control method must be changed.

Therefore, for different job requirements, different solutions should be adopted to get the required flow control to facilitate the work.

The automatic flow control valve visible in the workshop is mostly added to the existing flow control valve with a special control structure, and each structure needs to be separately set, so the whole set of devices is relatively large. Complex, not only costly, but also difficult to control, and easy to fail and need to be repaired, so there is still room for improvement.

In particular, the creation control valve has a temperature sensing functional structure and is single and strong.

According to the above-mentioned conventional flow control valve, the creator of the case started to improve, and through long-term research and development, the flow control valve with temperature sensing can be completed.

The main purpose of this creation is to provide a temperature-sensing flow control valve that automatically controls the output flow of the fluid by temperature changes to ensure smooth operation and avoid improper human operation.

Another object of the present invention is to provide a temperature sensing flow control valve that can be applied to different fluids above or below normal temperature.

A further object of the present invention is to provide a temperature-sensing flow control valve that is structurally stable and durable, and that is single and robust, ensuring long-term effective use and reducing the cost of maintenance or replacement.

The present invention relates to a temperature-sensing flow control valve comprising a control valve, a temperature sensor, a controller, a motor and a grating, the control valve having a fluid input end and a fluid output end, the fluid A flow valve is disposed between the input end and the fluid output end, the temperature sensor device is used on the control valve to sense the temperature of the control valve, and the controller is connected to the temperature sensor to receive temperature data, and the motor is connected to The controller is coupled to a drive shaft at an output end of the motor, the drive shaft is coupled to the flow valve, and the motor is operated by the controller to determine a rotation angle of the drive shaft to adjust the flow valve to change the fluid output end. An output flow of the fluid, and the grating device is disposed on the transmission shaft, the grating edge is provided with a position sensor, the position sensor senses the edge state of the grating to obtain a rotation angle of the transmission shaft, and connects the position sensor To the controller, the rotation angle data is transmitted back to the controller to adjust the motor to change the rotation angle of the transmission shaft.

The flow valve is controlled by rotation, and a flow path is provided in the flow valve. The two ends of the flow passage are rotated by the transmission shaft to change the flow rate, thereby achieving an adjustment of the output flow of the fluid.

In the operation, the temperature sensor first senses the temperature of the control valve, and compares with the preset temperature in the controller to obtain a result of increasing or decreasing the flow rate, and then the motor is operated by the controller. The drive shaft is rotated to adjust the angle of the flow valve, so that the size of the opening of the flow path is changed to change the output flow of the fluid, and the correctness of the rotation angle is ensured by the grating and the position sensor during the rotation.

1‧‧‧Control valve

11‧‧‧ fluid input

12‧‧‧ Fluid output

13‧‧‧Flow valve

14‧‧‧ flow path

2‧‧‧Motor

21‧‧‧ drive shaft

3‧‧‧Temperature sensor

4‧‧‧ Controller

41‧‧‧Temperature working range setting switch

42‧‧‧Toggle switch

5‧‧‧Raster

51‧‧‧ position sensor

52‧‧‧ gap

53‧‧‧ Grid hole

6‧‧‧ universal joint

10‧‧‧Flow control valve

Fig. 1 is an exploded perspective view of a flow control valve with temperature sensing; Fig. 2 is another exploded view of the temperature sensing flow control valve; Fig. 3 is a flow sensing valve with temperature sensing a three-dimensional combination diagram; and FIG. 4 is a structural schematic diagram of the temperature-sensing flow control valve;

Please refer to Figures 1 to 4, which is referred to as a temperature sensing method. The flow control valve 10 mainly includes a control valve 1 and a motor 2, the control valve 1 has a fluid input end 11 and a fluid output end 12, and a flow is arranged between the fluid input end 11 and the fluid output end 12. a valve 13, the flow valve 13 can change the flow rate of the fluid, so that the fluid introduced by the fluid input end 11 is adjusted by the flow valve 13 and then outputted by the fluid output end 12, thereby obtaining the desired output of the fluid. flow. The control valve 1 is a spherical or butterfly valve, and the flow valve 13 is controlled by rotation. The flow valve 13 has a first-class passage 14 in which both ends of the flow passage 14 are changed by rotating the flow valve 13. The output flow rate of the fluid is adjusted.

The output end of the motor 2 is connected to a drive shaft 21, and the drive shaft 21 is connected to the flow valve 13, and the motor 2 is used to determine the rotation angle of the drive shaft 21 to adjust the flow valve 13 to change the fluid output end 12. The output flow of the fluid.

The present invention is to adjust the output flow of the fluid by temperature sensing, and is provided with a temperature sensor 3 on the control valve 1 for sensing the temperature of the control valve 1; the temperature sensor The received temperature data is connected to a controller 4, which is connected and controls the motor 2, so that the controller 4 determines the output flow of the fluid by determining the temperature data of the temperature sensor 3. Acting, then controlling the motor 2 to perform an adjustment action.

A grating 5 is disposed on the drive shaft 21, and a position sensor 51 is disposed on the edge of the grating 5. The position sensor 51 senses the edge state of the grating 5 to obtain the rotation angle of the transmission shaft 21, and connects the position sensor 51. The controller 4 adjusts the rotation angle of the drive shaft 21 to the controller 4 to return the rotation angle data to the controller 4.

With the foregoing structure, in the operation, the temperature of the control valve 1 is first sensed by the temperature sensor 3, and compared with the preset temperature in the controller 4, the increase is obtained. Or reducing the result of the flow, and then operating the motor 2 by the controller 4, rotating the drive shaft 21 to adjust the angle of the flow valve 13, changing the size of the opening of the flow passage 14 to change the output of the fluid During the flow and rotation, the grating 5 and the position sensor 51 ensure the correctness of the rotation angle.

In addition, since the creation requires precise control, the motor 2 is a servo motor 2 or a stepping motor 2 to match the grating 5 for precise angle control. In order to avoid the error when the motor 2 is connected to the control valve 1, a universal joint 6 is disposed between the transmission shaft 21 and the flow valve 13, so that the connection between the motor 2 and the flow valve 13 is more precise. The motor 2 can accurately control the action of the flow valve 13.

Further, regarding the control operation of the grating 5, for a workplace having a lower accuracy, a structure as shown in FIG. 1 may be adopted, wherein the edge of the grating 5 has a notch 52, and the position sensor 51 senses the notch 52. The angle of rotation of the drive shaft 21 is obtained in a position such that the control angle is limited because of the size and number of the notches 52.

Alternatively, as shown in FIG. 2, the grating 5 is provided with a gate hole 53 in the periphery thereof, and the position of the gate hole 53 is sensed by the position sensor 51 to obtain the rotation angle of the transmission shaft 21, since the grid hole 53 is obtained. The number and density are much higher than the gap 52, so it can be applied to a fairly accurate workplace.

The controller 4 is provided with a temperature operating range setting switch 41 for setting the temperature operating range of the control valve 1.

In addition, depending on the temperature state of the control valve 1, the flow control mode of the control valve 1 also distinguishes between different demands of positive temperature and negative temperature, and the positive temperature means that the temperature of the control valve 1 needs to be reduced when the temperature of the control valve 1 rises. The output flow rate of the fluid; the negative temperature means that the temperature of the control valve 1 drops. It is necessary to reduce the output flow of the fluid.

The detailed description above is a detailed description of one of the possible embodiments of the present invention, and the embodiment is not intended to limit the scope of the patents, and the equivalent implementations or modifications that are not included in the spirit of the present invention should be included in The patent scope of this case.

1‧‧‧Control valve

2‧‧‧Motor

21‧‧‧ drive shaft

3‧‧‧Temperature sensor

4‧‧‧ Controller

41‧‧‧Temperature working range setting switch

42‧‧‧Toggle switch

5‧‧‧Raster

51‧‧‧ position sensor

Claims (8)

A temperature-sensing flow control valve is characterized in that: a control valve has a fluid input end and a fluid output end, and a flow valve is arranged between the fluid input end and the fluid output end to introduce the fluid input end The fluid is outputted by the flow valve and then outputted by the fluid output end; a temperature sensor is disposed on the control valve for sensing the temperature of the control valve; a controller is connected to the temperature sensor to Receiving temperature data for determining the action of controlling the structure described later; a motor coupled to the controller and having a drive shaft coupled to the output of the motor, the drive shaft connecting the flow valve, operating the motor with the controller Determining the rotation angle of the transmission shaft to adjust the flow valve to change the output flow of the fluid at the fluid output end; a grating is disposed on the transmission shaft, the grating edge is provided with a position sensor, the position sensor sense The angle of rotation of the drive shaft should be obtained from the edge state of the grating, and the position sensor is connected to the controller to turn the angle of rotation Transmitted back to the controller adjusts the motor to change the rotational angle of the drive shaft. The temperature-sensing flow control valve according to claim 1, wherein the control valve belongs to a spherical or butterfly valve, and the flow valve is controlled by rotation, and a flow path is provided in the flow valve, and both ends of the flow path are The opening is changed by rotating the flow valve by the drive shaft, thereby achieving an adjustment of the output flow rate of the fluid. The temperature-sensing flow control valve according to claim 1, wherein a universal joint is disposed between the transmission shaft and the flow valve to ensure that the motor can accurately control the operation of the flow valve. A temperature-sensing flow control valve according to claim 1, wherein the motor is a servo motor or Stepper motor. The temperature-sensing flow control valve of claim 1, wherein the grating edge has a notch, and the position sensor senses the notch position to obtain a rotation angle of the transmission shaft. The temperature-sensing flow control valve of claim 1, wherein one or more gate holes are disposed around the grating, and the position sensor senses the position of the gate hole to obtain a rotation angle of the transmission shaft. The temperature sensing flow control valve according to claim 1, wherein the controller is provided with a temperature working range setting switch, wherein the temperature working range setting switch is used to determine a preset temperature range to provide the controller ratio. The temperature data of the temperature sensor is used as a reference. The temperature-sensing flow control valve according to claim 1, wherein the controller is provided with a switch to adapt the control valve to work above normal temperature or below normal temperature.