CN212623759U - Real-time automatic flow regulation system - Google Patents
Real-time automatic flow regulation system Download PDFInfo
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- CN212623759U CN212623759U CN202021819209.8U CN202021819209U CN212623759U CN 212623759 U CN212623759 U CN 212623759U CN 202021819209 U CN202021819209 U CN 202021819209U CN 212623759 U CN212623759 U CN 212623759U
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Abstract
A real-time automatic flow regulation system comprising: input mechanism, detection mechanism, control mechanism and output mechanism. The input mechanism is connected with the output mechanism, the detection mechanism is arranged between the input mechanism and the output mechanism, and the control mechanism is respectively connected with the input mechanism and the detection mechanism. The input mechanism includes: a connected purified water bucket and an adjustable-speed gear pump. The detection mechanism includes: a flowmeter and a pressure gauge. The control mechanism includes: speed governing circuit board and stop valve. The output mechanism includes: the connected working valve group and the cleaning needle. The utility model discloses an increase detection mechanism and control mechanism on the basis of adjustable rotational speed gear pump, the pump keeps lower power operation when only needing a small amount of washing water to use, when a plurality of solenoid valves open the washing, improves the pump rotational speed, guarantees to wash the flow, is favorable to instrument needle oar self-cleaning uniformity and trouble real-time processing feedback, is the guarantee of biochemical analysis appearance normal operating.
Description
Technical Field
The utility model relates to a technique in the field of in vitro diagnostic equipment (IVD), in particular to a real-time automatic flow regulation system.
Background
The high-speed full-automatic biochemical analyzer is composed of a complex mechanical system, a precise liquid path, an optical system, a precise electronic circuit and an intelligent software operating system. Because the sample loading and cleaning cycle time is short, a plurality of sample loading arms are generally required to be operated and cleaned simultaneously. In the cleaning liquid path scheme mature in the industry, the rotating speed of the pump is fixed, so when the pressure of the system is regulated stably, the total output flow of the pump is fixed. When a plurality of parts need to be cleaned at the same time, the local pressure is reduced, and the flow of the cleaning parts is insufficient, so that a plurality of pumps or a high-power pump is usually adopted to supply water to ensure the flow of the cleaning water.
The prior common technology for cleaning a hydraulic flow path usually adopts a fixed-speed pump to supply water, and the flow path in a liquid path system is adjusted through a throttle valve. When a plurality of components use the fluid medium at the same time, the cleaning flow is reduced due to pressure reduction, and the cleaning effect is inconsistent.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it is not enough to the above-mentioned that prior art exists, provides a real-time automatic regulating system of flow, through increasing detection mechanism and control mechanism on the basis of adjustable rotational speed gear pump, the pump keeps lower power operation when only needing a small amount of washing water to use, when a plurality of solenoid valve opened the washing, improves the pump speed, guarantees to wash the flow, is favorable to instrument needle oar self-cleaning uniformity and trouble real-time processing feedback, is the guarantee of biochemical analysis appearance normal operating.
The utility model discloses a realize through following technical scheme:
the utility model discloses a: input mechanism, detection mechanism, control mechanism and output mechanism, wherein: the input mechanism is connected with the output mechanism, the detection mechanism is arranged between the input mechanism and the output mechanism, and the control mechanism is respectively connected with the input mechanism and the detection mechanism.
The input mechanism comprises: the water purification bucket that links to each other and adjustable rotational speed gear pump, wherein: the purified water bucket is connected with the control mechanism, and the adjustable-speed gear pump is respectively connected with the detection mechanism, the control mechanism and the output mechanism.
The detection mechanism comprises: a flow meter and a pressure gauge, wherein: the flow meter and the pressure gauge are respectively arranged between the adjustable rotating speed gear pump and the output mechanism, and the flow meter is connected with the control mechanism.
The control mechanism comprises: speed governing circuit board and stop valve, wherein: the speed regulating circuit board is respectively connected with the flowmeter and the adjustable speed gear pump, and the shutoff valve is respectively connected with the purified water bucket and the output mechanism.
The output mechanism comprises: the work valve group and the washing needle that link to each other, wherein: the working valve group is respectively connected with the cut-off valve and the cleaning needle, and the cleaning needle is connected with the cut-off valve.
The working valve group comprises a plurality of electromagnetic valves and connectors arranged on the valve plate, and a plurality of channels are arranged in the valve plate to communicate with all the electromagnetic valves.
The speed regulation circuit board include: the flow sensor comprises a flow sensor data receiving circuit, a signal comparison circuit and a direct current voltage output circuit.
The adjustable-speed gear pump is provided with a speed control circuit.
Technical effects
Compared with the prior art, the utility model discloses an increase detection mechanism and control mechanism on the basis of adjustable rotational speed gear pump, the pump keeps lower power operation when only needing a small amount of washing water to use, when a plurality of solenoid valves open the washing, improves the pump rotational speed, when guaranteeing to wash the flow, detects the pipeline flow path often through the sensor, and dynamic adjustment pump rotational speed makes the flow of its output at the constant range. The automatic cleaning consistency of the biochemical analyzer is facilitated, the cost is low, and the practicability is high.
Drawings
FIG. 1 is a schematic view of the principle structure of the present invention;
FIG. 2 is a schematic view of a work valve block;
FIG. 3 is a schematic diagram of a flow sensor data receiving circuit;
FIG. 4 is a schematic diagram of a signal comparison circuit;
FIG. 5 is a schematic diagram of a DC voltage output circuit;
FIG. 6 is a schematic diagram of a speed control circuit;
in the figure: the device comprises a water purification barrel 1, an adjustable-speed gear pump 2, a shutoff valve 3, a flowmeter 4, a pressure gauge 5, a speed regulation circuit board 6, a working valve group 7, an input mechanism 8, a detection mechanism 9, a control mechanism 10, an output mechanism 11, a cleaning needle 12, a valve plate 13, an electromagnetic valve 14, a joint 15, a signal line socket 16 and a photodiode 17.
Detailed Description
As shown in fig. 1, a system for real-time automatic flow regulation according to this embodiment includes: input mechanism 8, detection mechanism 9, control mechanism 10 and output mechanism 11, wherein: the input mechanism 8 is connected with the output mechanism 11, the detection mechanism 9 is arranged between the input mechanism 8 and the output mechanism 11, and the control mechanism 10 is respectively connected with the input mechanism 8 and the detection mechanism 9.
The input mechanism 8 comprises: the water purification bucket 1 and the adjustable speed gear pump 2 that link to each other, wherein: the water purifying barrel 1 is connected with the shutoff valve 3, the adjustable-speed gear pump 2 is respectively connected with the detection mechanism 8, the control mechanism 10 and the output mechanism 11, and the rotating speed of the adjustable-speed gear pump 2 can be adjusted in real time by adjusting the power supply voltage.
The detection mechanism 9 comprises: a flow meter 4 and a pressure gauge 5, wherein: flowmeter 4 and manometer 5 set up respectively in the pipeline between adjustable rotational speed gear pump 2 and service valve group 7, and flowmeter 4 links to each other with speed governing circuit board 6, and the flow feedback of detection pump output end is to speed governing circuit board 6.
The control mechanism 10 includes: speed governing circuit board 6 and shutoff valve 3, wherein: the speed regulating circuit board 6 is respectively connected with the flowmeter 4 and the adjustable speed gear pump 2, and the shutoff valve 3 is respectively connected with the purified water bucket 1 and the cleaning needle 12.
The output mechanism 11 comprises: the connected work valve group 7 and the cleaning needle 12, wherein: the work valve group 7 is respectively connected with the detection mechanism 9 and the cleaning needle 12.
The speed regulation circuit board 6 includes: flow sensor data receiving circuit, signal comparison circuit and direct current voltage output circuit, wherein: the receiving circuit receives the electric signal and compares the electric signal with a set threshold value, and the adjusting circuit controls the output of the direct-current voltage after the electric signal exceeds the range of the threshold value.
The flow sensor data receiving circuit comprises: a photodiode 17 and signal line patch sockets 16 respectively connected thereto, wherein: the flow signal is a pulse signal, and the signal enters the MCU after passing through the photodiode 17. The MCU thus knows the actual flow.
As shown in fig. 4, the signal comparison circuit compares the actual rotation speed voltage Vin with the set rotation speed voltage VREF, and the obtained difference Vout is sent to the MCU to output the voltage for controlling the pump, so as to adjust the rotation speed of the pump to control the flow rate.
As shown in fig. 5, the dc voltage output circuit includes two cascaded inverting amplifiers, the MCU outputs the pwm signal, and the two stages of voltage follow the pwm signal to output the voltage.
The adjustable rotating speed gear pump 2 is provided with a rotating speed control circuit, and rotating speed adjustment can be carried out by adjusting the input voltage value of the adjustable rotating speed gear pump.
As shown in fig. 6, the rotational speed control circuit includes: a high voltage diode D2 and a voltage-withstanding capacitor C1 which are arranged between the input interface J1 and the output interface J2 in parallel, wherein: the input interface J1 is connected with the instrument 24VD output power supply, after the voltage J2 output after being connected with the pump speed regulating line in parallel is connected to the interface of the speed regulating pump, the rotating speed of the pump can be changed, and the effect of controlling the flow is achieved.
The flow meter 4 in this embodiment is preferably a SEN-HZ06K model flow sensor.
The flowmeter 4 is connected in series with the pump output port at one end of the purified water bucket 1, the fluid medium pushes the impeller therein to rotate when passing through the sensor, and the impeller rotates faster when the flow is larger, so that the fluid medium is converted into an electric signal to be output and fed back to the speed regulating circuit board 6; the speed regulation circuit board 6 outputs a direct current power supply required by the operation of the adjustable rotating speed gear pump 2, when the flow data electric signal received by the speed regulation circuit board 6 exceeds a set range, the direct current voltage output circuit stored in the speed regulation circuit board 6 controls the voltage of the output direct current power supply, when the flow of a detection point is reduced, the rotating speed of the pump is increased, otherwise, the rotating speed of the pump is reduced; the rotating speed of the adjustable rotating speed gear pump 2 is adjusted in real time through the change of the power supply voltage, so that the whole feedback link forms closed-loop control.
When the water purifying barrel 1 is lack of water due to faults, the speed regulating circuit board 6 can cut off the input voltage of the adjustable rotating speed pump 2 in time after receiving the abnormal flow signal, the protection pump cannot be damaged due to idling, and meanwhile, the speed regulating circuit board 6 transmits alarm information to the user display unit.
Through the real-time automatic adjustment of the flow, the cleaning water quantity passing through the pipeline of the flow meter 4 in the same time is ensured to be basically consistent, and the method is an important guarantee for the consistency of the cleaning water quantity of the instrument cleaning needle.
Through specific practical experiment tests, if the flow regulating system shown in the figure 1 is installed, compared with a regulating scheme which is not increased, when the initial pressure is 0.1Mpa and the electromagnetic valve is fully opened, the novel pressure fluctuation range of the experiment can be controlled within the range of 0.02Mpa, the fluctuation range is about 2 percent, and the maximum pressure fluctuation of the scheme which is not increased and is automatically regulated can reach 50 percent.
Compared with the prior art, the device realizes stable system flow, is favorable for reducing the influence of flow change caused by the reduction of the opening pressure of a plurality of cleaning valves, and ensures the uniformity of the cleaning flow of the cleaned needles in the same time.
The foregoing embodiments may be modified in various ways by those skilled in the art without departing from the spirit and scope of the present invention, which is not limited by the above embodiments but is to be accorded the full scope defined by the appended claims, and all such modifications and variations are within the scope of the invention.
Claims (8)
1. A real-time automatic flow regulation system, comprising: input mechanism, detection mechanism, control mechanism and output mechanism, wherein: the input mechanism is connected with the output mechanism, the detection mechanism is arranged between the input mechanism and the output mechanism, and the control mechanism is respectively connected with the input mechanism and the detection mechanism;
the input mechanism comprises: the water purification bucket that links to each other and adjustable rotational speed gear pump, wherein: the water purifying barrel is connected with the control mechanism, and the adjustable-speed gear pump is respectively connected with the detection mechanism, the control mechanism and the output mechanism;
the detection mechanism comprises: a flow meter and a pressure gauge, wherein: the flow meter and the pressure gauge are respectively arranged between the adjustable-speed gear pump and the output mechanism, and the flow meter is connected with the control mechanism;
the control mechanism comprises: speed governing circuit board and stop valve, wherein: the speed regulating circuit board is respectively connected with the flowmeter and the adjustable speed gear pump, and the shutoff valve is respectively connected with the purified water bucket and the output mechanism.
2. The system of claim 1, wherein the output mechanism comprises: the work valve group and the washing needle that link to each other, wherein: the working valve group is respectively connected with the cut-off valve and the cleaning needle, and the cleaning needle is connected with the cut-off valve.
3. The system according to claim 1, wherein the speed-regulating circuit board comprises: the flow sensor comprises a flow sensor data receiving circuit, a signal comparison circuit and a direct current voltage output circuit.
4. The system of claim 1, wherein the adjustable speed gear pump is provided with a speed control circuit.
5. The system of claim 2, wherein the valve set comprises a plurality of solenoid valves and connectors disposed on a valve plate, and a plurality of passages are disposed inside the valve plate to communicate with all the solenoid valves.
6. The system of claim 3, wherein the flow sensor data receiving circuit comprises: the photoelectric diode and the signal line socket connected with the photoelectric diode respectively.
7. The system of claim 3, wherein the DC voltage output circuit comprises two cascaded stages of inverting amplifiers.
8. The system of claim 4, wherein the rotation speed control circuit comprises: and the high-voltage diode and the voltage-resistant capacitor are arranged between the input interface and the output interface in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021819209.8U CN212623759U (en) | 2020-08-27 | 2020-08-27 | Real-time automatic flow regulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021819209.8U CN212623759U (en) | 2020-08-27 | 2020-08-27 | Real-time automatic flow regulation system |
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| Publication Number | Publication Date |
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| CN212623759U true CN212623759U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021819209.8U Active CN212623759U (en) | 2020-08-27 | 2020-08-27 | Real-time automatic flow regulation system |
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| CN (1) | CN212623759U (en) |
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- 2020-08-27 CN CN202021819209.8U patent/CN212623759U/en active Active
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