CN214598789U - Low liquid level protection type magnetic stirring batching jar - Google Patents
Low liquid level protection type magnetic stirring batching jar Download PDFInfo
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- CN214598789U CN214598789U CN202120253141.XU CN202120253141U CN214598789U CN 214598789 U CN214598789 U CN 214598789U CN 202120253141 U CN202120253141 U CN 202120253141U CN 214598789 U CN214598789 U CN 214598789U
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Abstract
The utility model discloses a low liquid level protection type magnetic stirring batching tank, which comprises a magnetic stirrer, a liquid level sensor, a pressure difference transmitter and a PLC control system; the magnetic stirrer is connected with the PLC control system and is controlled by the PLC control system; the liquid level sensor is arranged at the lower part of the batching tank and is electrically connected with the PLC control system through a differential pressure transmitter; the liquid level sensor collects liquid level information in the batching tank and then sends the liquid level information to the pressure difference transmitter, the pressure difference transmitter processes the acquired signal and then sends the analog signal to the PLC control system, the PLC control system processes the acquired signal and then obtains a control scheme, and the control signal corresponding to the control scheme is sent to the magnetic stirrer to complete the control of the magnetic stirrer. The utility model discloses not only can avoid the low liquid level of magnetic stirrers to rotate and the emergence of the idle running condition, avoid equipment to damage, its overall structure is simple moreover, and low cost has application prospect.
Description
Technical Field
The utility model belongs to the technical field of biochemical medicine production facility, a low liquid level protection type magnetic stirring batching jar is related to, in particular to take low liquid level automatic shutdown and stir low-speed start function's magnetic stirring batching jar.
Background
The stirring and proportioning tank is a production equipment widely used in the fields of biology, medicine, chemistry, chemical industry and the like. The magnetic stirring slurry mixing tank is one type, and is driven by a motor to enable the inner magnetic steel and the outer magnetic steel to generate magnetic coupling to achieve the purpose of transmission and drive the stirring paddle to rotate. The stirring device comprises a motor, a reduction gearbox, a magnetic coupling and a stirring shaft, wherein the reduction gearbox is driven by the motor, and an output shaft of the reduction gearbox is connected with the stirring shaft through the magnetic coupling, so that the motor drives the stirrer to rotate. The magnetic coupling consists of an inner magnetic rotor, an outer magnetic rotor and an isolation sleeve. An even number of tile-shaped magnetic blocks are respectively arranged at the inner edge of the outer magnetic rotor and the outer edge of the inner magnetic rotor, and the magnetic poles are alternately arranged in a positive and negative way. When the magnetic steel is started, the inner magnetic steel is driven by the transmission shaft to start rotating, and the outer magnetic steel is in a static state. The rotation angle of the inner magnetic pole and the rotation angle of the outer magnetic pole are gradually increased from zero along with the increase of the rotation angle of the inner magnetic steel. When the torque generated by the stirring paddle is enough to overcome the friction force and the load, the outer magnetic steel starts to rotate to achieve the synchronization with the inner magnetic steel, and the stirring paddle is driven to start to rotate to stir and mix the solution in the stirring tank.
This equipment has that the homogeneity is good, the silence, advantages such as the energy consumption is low, nevertheless when magnetic stirrers operates, operating personnel do not in time close the agitator and easily take place the low liquid level and rotate and the idle running condition, can lead to the bearing to generate heat the inflation and lead to embracing the axle, cause magnetic stirrers 'damage, and magnetic stirrers quick start process receives the liquid resistance great simultaneously, and outer magnetic rotor is obstructed, arouses unusual vibrations, causes magnetic stirrers' damage easily.
Therefore, the development of the low-liquid-level protection type magnetic stirring batching tank has practical significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art and take place easily that low liquid level rotates and the defect that magnetic stirrers started fast and damaged equipment, thereby provide a low liquid level protection type magnetic stirring batching jar, avoid the low liquid level of magnetic stirrers to rotate and the emergence of the idle running condition, let magnetic stirrers low-speed start, make it normal operation, increase of service life guarantees product quality.
In order to achieve the above object, the utility model provides a following technical scheme:
a low liquid level protection type magnetic stirring batching tank comprises a magnetic stirrer, a liquid level sensor, a pressure difference transmitter and a PLC control system;
the magnetic stirrer is connected with and controlled by the PLC control system;
the liquid level sensor is arranged at the lower part of the batching tank and is electrically connected with the PLC control system through a differential pressure transmitter;
the liquid level sensor collects liquid level information in the batching tank and then sends the liquid level information to the pressure difference transmitter, the pressure difference transmitter processes the acquired signal and then sends the analog signal to the PLC control system, the PLC control system processes the acquired signal and then obtains a control scheme, and the control signal corresponding to the control scheme is sent to the magnetic stirrer to complete the control of the magnetic stirrer.
The utility model discloses a low liquid level protection type magnetic stirring batching jar, overall structure is simple, low cost through level sensor, pressure differential transmitter and PLC control system three cooperation can accomplish the effective control to magnetic stirrers, and PLC control system closes magnetic stirrers when the liquid level information in the batching jar that level sensor acquireed is the low liquid level, can avoid the low liquid level of magnetic stirrers to rotate and the emergence of the idle running condition, avoids equipment to damage, has application prospect.
As a preferred technical scheme:
as above, when the liquid level information in the batching tank collected by the liquid level sensor is low liquid level, the control scheme is to close the magnetic stirrer.
According to the low liquid level protection type magnetic stirring batching tank, the magnetic stirrer is driven by the PLC control system through the motor, and the starting time of the motor is 2min, namely the starting time of the magnetic stirrer is 2 min. Certainly, the start time of the motor is that the PLC control system can be set for according to the demand (specifically, realized through the start time of setting for the converter in the PLC control system), and the start time of current settlement comparing in original magnetic stirrers 20s, extension magnetic stirrers' start time greatly makes the low-speed start of magnetic stirrers, and the protection magnetic stirrers normal operating is not fragile.
The low liquid level protection type magnetic stirring batching jar as above, the magnetic stirrer is installed the bottom of batching jar.
Has the advantages that:
(1) the utility model discloses a low liquid level protection type magnetic stirring batching jar can accomplish the effective control to magnetic stirrer through level sensor, pressure differential transmitter and PLC control system three cooperation, and PLC control system closes magnetic stirrer when the liquid level information in the batching jar that level sensor acquireed is the low liquid level, can avoid the low liquid level of magnetic stirrer to rotate and the emergence of the idle running condition, avoids equipment to damage;
(2) the utility model discloses a low liquid level protection type magnetic stirring batching jar, overall structure is simple, and low cost can conveniently reform transform in order to realize equipment upgrading to existing equipment, has application prospect.
Drawings
FIG. 1 is a schematic structural view of the low liquid level protection type magnetic stirring batching tank of the utility model;
the device comprises a liquid level sensor 1, a differential pressure transmitter 2, a PLC control system 3, a motor 4 and a magnetic stirrer 5.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
Example 1
A low liquid level protection type magnetic stirring batching tank is shown in figure 1 and comprises a magnetic stirrer 5, a liquid level sensor 1, a differential pressure transmitter 2 and a PLC control system 3, wherein the magnetic stirrer 5, the liquid level sensor 1, the differential pressure transmitter 2 and the PLC control system are arranged at the bottom of the batching tank;
the magnetic stirrer 5 is connected with the PLC control system 3 and is controlled by the PLC control system 3, the magnetic stirrer 5 is driven by the PLC control system 3 through the motor 4, and the starting time of the motor 4 is 2 min;
the liquid level sensor 1 is arranged at the lower part of the batching tank and is electrically connected with the PLC control system 3 through a differential pressure transmitter 2;
liquid level sensor 1 gathers after the liquid level information in the batching jar to send it to pressure differential transmitter 2, pressure differential transmitter 2 handles the back to acquireing the signal and sends analog signal to PLC control system 3, PLC control system 3 obtains control scheme after handling the acquisition signal, and take place the control signal that control scheme corresponds to magnetic stirrers 5, accomplish the control to magnetic stirrers 5, when the liquid level information in the batching jar that liquid level sensor gathered was low liquid level, control scheme is for closing magnetic stirrers.
Comparative example 1
A magnetic stirring batching tank, which has a structure substantially the same as that of the tank of the embodiment 1, except that it is not provided with a liquid level sensor and a differential pressure transmitter.
The use of the proportioning tanks of comparative example 1 and example 1 for proportioning operations, respectively, found that the use of the proportioning tank of comparative example 1 resulted in the occurrence of stirrer damage, requiring replacement of the graphite bearing, for five batches of operations, while the use of the proportioning tank of example 1 resulted in the accumulation of one hundred and fifty batches of operations, with no occurrence of stirrer damage. Therefore, the utility model discloses an unnecessary equipment loss had both been avoided in the improvement, the quality of product has also been fine assurance, and it is highly effective to explain the improvement measure promptly.
Through verification, the utility model discloses a low liquid level protection type magnetic stirring batching jar can accomplish the effective control to magnetic stirrers through liquid level sensor, pressure differential transmitter and PLC control system three cooperation, and PLC control system closes magnetic stirrers when the liquid level information in the batching jar that liquid level sensor obtained is the low liquid level, can avoid the low liquid level of magnetic stirrers to rotate and the emergence of idle running condition, avoids equipment to damage; the whole structure is simple, the cost is low, the existing equipment can be conveniently transformed to realize equipment upgrading, and the application prospect is wide.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made without departing from the spirit and scope of the invention.
Claims (4)
1. A low liquid level protection type magnetic stirring batching tank is characterized by comprising a magnetic stirrer, a liquid level sensor, a differential pressure transmitter and a PLC control system;
the magnetic stirrer is connected with and controlled by the PLC control system;
the liquid level sensor is arranged at the lower part of the batching tank and is electrically connected with the PLC control system through a differential pressure transmitter;
the liquid level sensor collects liquid level information in the batching tank and then sends the liquid level information to the pressure difference transmitter, the pressure difference transmitter processes the acquired signal and then sends the analog signal to the PLC control system, the PLC control system processes the acquired signal and then obtains a control scheme, and the control signal corresponding to the control scheme is sent to the magnetic stirrer to complete the control of the magnetic stirrer.
2. The low liquid level protected magnetic stirring dispensing tank of claim 1 wherein when the liquid level information in the dispensing tank collected by the liquid level sensor is a low liquid level, the control scheme is to turn off the magnetic stirrer.
3. The low level protective magnetic stirring dispensing tank of claim 1 wherein the magnetic stirrer is driven by the PLC control system through a motor, and the start-up time of the motor is 2 min.
4. The low level protective magnetic stirring dispensing tank of claim 1 wherein said magnetic stirrer is mounted at the bottom of said dispensing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120253141.XU CN214598789U (en) | 2021-01-29 | 2021-01-29 | Low liquid level protection type magnetic stirring batching jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120253141.XU CN214598789U (en) | 2021-01-29 | 2021-01-29 | Low liquid level protection type magnetic stirring batching jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214598789U true CN214598789U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120253141.XU Active CN214598789U (en) | 2021-01-29 | 2021-01-29 | Low liquid level protection type magnetic stirring batching jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214598789U (en) |
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2021
- 2021-01-29 CN CN202120253141.XU patent/CN214598789U/en active Active
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