CN221097482U - Numerical control needle valve device - Google Patents
Numerical control needle valve device Download PDFInfo
- Publication number
- CN221097482U CN221097482U CN202323211786.5U CN202323211786U CN221097482U CN 221097482 U CN221097482 U CN 221097482U CN 202323211786 U CN202323211786 U CN 202323211786U CN 221097482 U CN221097482 U CN 221097482U
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- China
- Prior art keywords
- needle valve
- needle
- valve body
- numerical control
- synchronous wheel
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 abstract description 13
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000011295 pitch Substances 0.000 description 5
- 235000013361 beverage Nutrition 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model relates to a numerical control needle valve device, which comprises a rotary encoder, a hybrid stepping motor, a mounting seat, a synchronous wheel, a synchronous belt, a needle valve and a needle valve body, wherein the hybrid stepping motor is mounted on the mounting seat; the hybrid stepping motor drives the synchronous wheel to move, and the synchronous wheel drives the synchronous belt to rotate. The numerical control needle valve device provided by the utility model uses a precise needle valve mechanism, and has high processing precision requirements. The structure of the needle valve is driven and controlled by a digital chip, and the gas/liquid flow rate is controlled with high precision by software. The method can be widely applied to various scenes in which the gas/liquid flow rate needs to be accurately controlled.
Description
Technical Field
The utility model relates to the field of gas/liquid flow rate control, in particular to the field of needle valve mechanisms, and specifically relates to a numerical control needle valve device.
Background
In many occasions, the air/liquid flow rate needs to be precisely controlled, for example, in coffee machines, milk foam machines, beverage machines and other machines, but the air/liquid flow rate cannot be precisely and precisely controlled in the prior art, and large errors are easily caused, so that a device for precisely controlling a needle valve is very needed.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide the numerical control needle valve device which has the advantages of simple structure, high precision and wider application range.
In order to achieve the above object, the numerical control needle valve device of the present utility model is as follows:
The numerical control needle valve device is mainly characterized by comprising a rotary encoder, a hybrid stepping motor, a mounting seat, a synchronous wheel, a synchronous belt, a needle valve needle and a needle valve body, wherein the hybrid stepping motor is mounted on the mounting seat, the rotary encoder is mounted in the hybrid stepping motor, the synchronous wheel is mounted on two sides of the synchronous belt, the hybrid stepping motor is connected with the synchronous wheel, the needle valve needle is mounted in the needle valve body, and the top end of the needle valve body is provided with an inlet and an outlet; the hybrid stepping motor drives the synchronous wheel to move, and the synchronous wheel drives the synchronous belt to rotate.
Preferably, when the synchronous belt rotates positively, the needle valve is pushed upwards, so that the gap between the needle valve body and the needle valve is reduced; when the synchronous belt is reversed, the needle valve needle moves downwards, and the gap between the needle valve body and the needle valve needle is enlarged.
Preferably, the device further comprises a limiting piece and a limiting column, wherein the limiting piece is arranged outside the synchronous wheel, the limiting column is arranged on the mounting seat, and when the synchronous belt rotates positively, the limiting piece is in contact with the limiting column, and the synchronous wheel is clamped.
Preferably, the needle valve body comprises a needle valve body and a needle valve upper body, the needle valve upper body is arranged above the needle valve body, the needle valve needle is arranged inside the needle valve body, and an inlet and an outlet are arranged at the top end of the needle valve upper body.
Preferably, the inner side of the bottom end of the needle valve body is provided with threads which are matched with the threads on the needle valve needle, and the device supports the selection of the pitches of different threads.
The numerical control needle valve device provided by the utility model uses a precise needle valve mechanism, and has high processing precision requirements. The structure of the needle valve is driven and controlled by a digital chip, and the gas/liquid flow rate is controlled with high precision by software. The method can be widely applied to various scenes needing to accurately control the gas/liquid flow rate, such as coffee machines, milk foam machines, beverage machines and the like.
Drawings
Fig. 1 is a schematic structural view of the numerical control needle valve device of the present utility model.
Fig. 2 is a cross-sectional view of the numerical control needle valve device of the present utility model.
Reference numerals:
1. Rotary encoder
2. Hybrid stepping motor
3. Mounting base
4. Synchronous wheel
5. Synchronous belt
6. Needle valve needle
7. Needle valve body
8. Needle valve upper body
9. Limiting sheet
10. Spacing post
11. Inlet port
12. An outlet
13. Screw thread
Detailed Description
In order to more clearly describe the technical contents of the present utility model, a further description will be made below in connection with specific embodiments.
The utility model relates to a numerical control needle valve device, which comprises a rotary encoder, a hybrid stepping motor, a mounting seat, a synchronous wheel, a synchronous belt, a needle valve needle and a needle valve body, wherein the hybrid stepping motor is mounted on the mounting seat; the hybrid stepping motor drives the synchronous wheel to move, and the synchronous wheel drives the synchronous belt to rotate.
As a preferable implementation mode of the utility model, when the synchronous belt rotates positively, the needle valve is pushed upwards, so that the gap between the needle valve body and the needle valve is reduced; when the synchronous belt is reversed, the needle valve needle moves downwards, and the gap between the needle valve body and the needle valve needle is enlarged.
As the preferred implementation mode of the utility model, the device also comprises a limiting piece and a limiting column, wherein the limiting piece is arranged outside the synchronous wheel, the limiting column is arranged on the mounting seat, and when the synchronous belt rotates positively, the limiting piece is contacted with the limiting column, and the synchronous wheel is clamped.
As the preferred implementation mode of the utility model, the needle valve body comprises a needle valve body and a needle valve upper body, the needle valve upper body is arranged above the needle valve body, the needle valve needle is arranged in the needle valve body, and the top end of the needle valve upper body is provided with an inlet and an outlet.
As a preferred embodiment of the utility model, the inner side of the bottom end of the needle valve body is provided with threads which are matched with the threads on the needle valve needle, and the device supports the selection of the pitches of different threads.
In a specific embodiment of the utility model, the position of the needle is determined by the control motherboard reading the encoder signal. When adjustment is needed, the control main board sends signals to the hybrid stepping motor according to the required data, and the hybrid stepping motor drives the synchronous wheel to work. The synchronous wheel drives the synchronous belt to rotate (forward/reverse rotation). When the control main board reads that the encoder feeds back to the correct position, the motor stops running. The control motherboard is connected to an external numerical control motherboard, and is not shown in the drawings.
When the synchronous belt rotates positively: the needle valve is pushed upwards, the needle gap between the needle valve body and the needle valve is reduced, and the flow rate of gas/liquid passing through is gradually reduced. When the needle valve needle is pushed up to zero, the gas/liquid passage is completely shut off.
When the synchronous belt is reversed: the needle valve moves downwards, the gap between the needle valve body and the needle valve becomes larger, and the flow rate of the air/liquid passing through the needle valve gradually becomes larger. When the needle valve needle is moved down to the limit, the flow rate of the gas/liquid passage is at a maximum.
The outside of the synchronous wheel is provided with a mechanical limiting piece, and the mounting seat is provided with a limiting column. When the synchronous belt rotates forward to the position limiting piece to be in contact with the position limiting post, the synchronous wheel is clamped, the synchronous belt and the motor cannot operate, the control main board detects that the current of the motor increases, the position of the encoder can be recorded, and the position corresponding to the position is set to be the zero position of the needle valve needle. In this way, the machine completes the calibration of the needle valve zero.
After each reboot, the machine automatically calibrates zero bits one time, eliminating any possible accumulated bias. The accuracy of opening and closing the needle valve is always kept constant.
The data of each inching of the stepping motor can be recorded by the control main board through the data acquisition of the encoder. Based on this data, software can precisely control the needle valve needle to any position, and thus the flow rate.
Because of the existence of the mechanical limiting piece of the synchronous wheel and the limiting post of the mounting seat, the opening and closing of the needle valve is limited within one circle of rotation of the synchronous wheel. According to different application scenes, needle valves with different screw pitches can be used, so that different flow rate control purposes are achieved. When the change speed of the required flow is relatively high, a larger pitch can be selected, so that the displacement of the needle corresponding to each unit angle of rotation is relatively high, and the flow speed adjustment amplitude is relatively high. When the fine change of the flow rate is required to be accurately controlled, smaller pitch can be selected, so that the displacement of the needle corresponding to each unit angle is smaller, the flow rate adjustment amplitude is smaller, and the flow rate can be accurately controlled.
The friction loss is used for a long time, and the physical error compensation is carried out by adjusting the limiting sheet above the synchronous wheel. After the position of the limiting piece is adjusted, restarting the machine, and automatically calibrating the zero position of the needle valve. At the same time, software can also be used in the device for temporary compensation.
The specific implementation manner of this embodiment may be referred to the related description in the foregoing embodiment, which is not repeated herein.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "plurality" means at least two.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The numerical control needle valve device provided by the utility model uses a precise needle valve mechanism, and has high processing precision requirements. The structure of the needle valve is driven and controlled by a digital chip, and the gas/liquid flow rate is controlled with high precision by software. The method can be widely applied to various scenes needing to accurately control the gas/liquid flow rate, such as coffee machines, milk foam machines, beverage machines and the like.
In this specification, the utility model has been described with reference to specific embodiments thereof. It will be apparent that various modifications and variations can be made without departing from the spirit and scope of the utility model. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (5)
1. The numerical control needle valve device is characterized by comprising a rotary encoder, a hybrid stepping motor, a mounting seat, a synchronous wheel, a synchronous belt, a needle valve needle and a needle valve body, wherein the hybrid stepping motor is mounted on the mounting seat, the rotary encoder is mounted in the hybrid stepping motor, the synchronous wheel is mounted on two sides of the synchronous belt, the hybrid stepping motor is connected with the synchronous wheel, the needle valve needle is mounted in the needle valve body, and the top end of the needle valve body is provided with an inlet and an outlet; the hybrid stepping motor drives the synchronous wheel to move, and the synchronous wheel drives the synchronous belt to rotate.
2. The numerical control needle valve device according to claim 1, wherein the needle valve is pushed upward when the timing belt is rotated forward, so that a gap between the needle valve body and the needle valve is reduced; when the synchronous belt is reversed, the needle valve needle moves downwards, and the gap between the needle valve body and the needle valve needle is enlarged.
3. The numerical control needle valve device according to claim 1, further comprising a limiting piece and a limiting post, wherein the limiting piece is arranged outside the synchronous wheel, the limiting post is arranged on the mounting seat, and when the synchronous belt rotates positively, the limiting piece contacts with the limiting post, and the synchronous wheel is clamped.
4. The numerical control needle valve device according to claim 1, wherein the needle valve body comprises a needle valve body and a needle valve upper body, the needle valve upper body is arranged above the needle valve body, the needle valve needle is arranged inside the needle valve body, and an inlet and an outlet are arranged at the top end of the needle valve upper body.
5. The numerical control needle valve assembly of claim 4 wherein the inner side of the bottom end of the needle valve body is provided with threads that mate with threads on the needle valve pin, the assembly supporting selection of the pitch of the different threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323211786.5U CN221097482U (en) | 2023-11-28 | 2023-11-28 | Numerical control needle valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323211786.5U CN221097482U (en) | 2023-11-28 | 2023-11-28 | Numerical control needle valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221097482U true CN221097482U (en) | 2024-06-07 |
Family
ID=91307550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323211786.5U Active CN221097482U (en) | 2023-11-28 | 2023-11-28 | Numerical control needle valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221097482U (en) |
-
2023
- 2023-11-28 CN CN202323211786.5U patent/CN221097482U/en active Active
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