CN218542559U - Weighing metering pump - Google Patents
Weighing metering pump Download PDFInfo
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- CN218542559U CN218542559U CN202222339778.8U CN202222339778U CN218542559U CN 218542559 U CN218542559 U CN 218542559U CN 202222339778 U CN202222339778 U CN 202222339778U CN 218542559 U CN218542559 U CN 218542559U
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Abstract
The utility model discloses a weighing and metering pump, which effectively avoids cross contamination between liquids, realizes quantitative conveying by closed-loop control, avoids calibration and can set monitoring parameters individually; the liquid storage barrel is communicated with the container through a pump pipe and a weighing and metering pump, and the solution in the liquid storage barrel is quantitatively conveyed into the container through the weighing and metering pump; the upper portion of weighing and metering pump sets up touch display screen, the lower part of weighing and metering pump is provided with the quick tube-changing pump head, the afterbody of quick tube-changing pump head is provided with step motor, step motor is used for the drive to trade the action of tube-changing pump head fast, the container sets up on weighing sensor's tray, be connected through the sensor signal line between weighing sensor and the weighing and metering pump, be provided with control module in the weighing and metering pump, control module and step motor, touch display screen and sensor signal line electricity are connected, control module is used for controlling weighing and metering pump work, the pipeline tip that communicates with the container is provided with the drip head.
Description
Technical Field
The utility model relates to a weighing metering pump belongs to metering device technical field.
Background
In the fields of laboratory, medical, production and filling, etc., the use of pumps to transfer or fill liquids is a common way, among which peristaltic pumps and syringe pumps are more and more advantageous, but also has many disadvantages:
(1) when the traditional peristaltic pump is used for filling, the elasticity of a peristaltic pump tube can change along with the change of factors such as the use time, the use temperature and the like, and the flow of the conveyed liquid can be directly influenced by the elasticity of the pump tube. Therefore, the flow accuracy of the peristaltic pump is difficult to ensure, so that the flow calibration of the peristaltic pump is required periodically.
(2) If a syringe pump is used, the accuracy is satisfactory without frequent calibration, but if the liquid it fills or delivers is replaced, the syringe needs to be cleaned again, and the cleaning of the syringe pump seriously affects the convenience of its use.
(3) Neither syringe nor peristaltic pumps, in use, achieve a closed loop flow control. The closed loop flow control means that the flow rate of the liquid to be transported or filled set by the apparatus cannot be fed back to the apparatus when the liquid is transported or filled by the pump.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art exists not enough, provides a weighing metering pump, effectively avoids cross contamination between liquid, closed-loop control to realize quantitative transport, exempt from calibration, monitoring parameter and can carry out individualized settlement.
In order to solve the technical problem, the utility model discloses a technical scheme be: a weighing and metering pump comprises a liquid storage barrel, a pump pipe, a weighing and metering pump, a quick pipe changing pump head, a touch display screen, a stepping motor, a sensor signal line, a weighing sensor, a dripper and a container, wherein the liquid storage barrel is communicated with the container through the weighing and metering pump through the pump pipe, and a solution in the liquid storage barrel is quantitatively conveyed into the container through the weighing and metering pump;
the utility model discloses a weighing metering pump, including weighing metering pump, sensor signal line, control module, touch display screen and sensor signal line, the upper portion of weighing metering pump sets up touch display screen, the lower part of weighing metering pump is provided with trades a tub pump head fast, the afterbody of trading a tub pump head fast is provided with step motor, step motor is used for the drive to trade tub pump head action fast, the container sets up on weighing sensor's tray, be connected through sensor signal line between weighing sensor and the weighing metering pump, be provided with control module in the weighing metering pump, control module and step motor, touch display screen and sensor signal line are connected, control module is used for controlling weighing metering pump work, with the pipeline tip of container intercommunication is provided with the drip head.
The structure of the quick tube-changing pump head is as follows: the synchronous disc is connected with a power output end of the stepping motor, the upper cover is matched with the box turnover cover and the sliding cover to press the buckling shell on the synchronous disc, the spring is arranged between the sliding cover and the buckling shell, and the pipe clamp is arranged at one end of the spring and fixed in limiting grooves on two sides of the upper cover.
The stepping motor is a brushless speed regulating motor or a servo motor.
Compared with the prior art, the utility model beneficial effect who has is: the utility model discloses a step motor, pump and weighing sensor's supporting use realizes closed-loop control, has following several advantages.
1. The utility model discloses effectively avoid cross contamination between liquid. The peristaltic pump is convenient for change the showing advantage of pump line for this system can switch the liquid kind of carrying or canning at will, effectively avoids the cross contamination that different liquid change brought.
2. The utility model discloses closed-loop control realizes quantitative transport, and receiving container places on weighing sensor, monitors through weighing sensor whether the weight of carrying or canned liquid has reached the setting value to can realize carrying out the flow setting from instrument equipment end, carry out the flow according to the setting value to the pump and carry, go to weighing sensor again and feed back the closed-loop control of equipment instrument with the liquid flow value of carrying, thereby reach the purpose of carrying out liquid quantitative transport or canning effectively.
3. The utility model discloses exempt from the calibration. Unlike the pump pipe, the weighing sensor does not change with the change of factors such as the service time and the service temperature, and the performance of the weighing sensor is stable, reliable and accurate.
4. The utility model discloses the monitoring parameter can carry out individualized settlement. In use, the user is free to select the weight or volume of liquid delivered as a monitoring parameter. When the liquid volume needs to be monitored, the density calculation formula rho = m/v and the weight calculation formula G = mg can be used for carrying out weight-volume interconversion. The switching of monitoring the weight and the volume can be completed only by inputting the density of the liquid into the system.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the schematic view of the structure decomposition of the pump head for replacing the tube rapidly in the present invention.
In the figure: the device comprises a liquid storage barrel 1, a pump pipe 2, a weighing metering pump 3, a quick pipe changing pump head 4, an upper cover 41, a pipe clamp 42, a synchronous disc 43, a buckle shell 44, a spring 45, a slide cover 46, a flip cover 47, a touch display screen 5, a stepping motor 6, a sensor signal line 7, a weighing sensor 8, a dropper 9 and a container 10.
Detailed Description
As shown in fig. 1 and 2, the utility model relates to a weighing and metering pump, which comprises a liquid storage barrel 1, a pump pipe 2, a weighing and metering pump 3, a quick pipe-changing pump head 4, a touch display screen 5, a stepping motor 6, a sensor signal line 7, a weighing sensor 8, a dripper 9 and a container 10, wherein the liquid storage barrel 1 is communicated with the container 10 through the weighing and metering pump 3 via the pump pipe 2, and the solution in the liquid storage barrel 1 is quantitatively delivered into the container 10 through the weighing and metering pump 3;
the utility model discloses a weighing and metering pump, including weighing and metering pump 3, touch display screen 5, container 10, sensor signal line 7, control module, sensor signal line 5, sensor signal line 9, sensor signal line 7, control module is provided with the liquid drop head 9, the upper portion of weighing and metering pump 3 sets up touch display screen 5, the lower part of weighing and metering pump 3 is provided with quick tube changing pump head 4, the afterbody of quick tube changing pump head 4 is provided with step motor 6, step motor 6 is used for driving quick tube changing pump head 4 action, container 10 sets up on weighing sensor 8's tray, be connected through sensor signal line 7 between weighing sensor 8 and the weighing and metering pump 3, be provided with control module in the weighing and metering pump 3, this control module is the PLC module among the prior art, control module is connected with step motor 6, touch display screen 5 and sensor signal line 7 electricity, control module is used for controlling weighing and metering pump 3 work, with the pipeline tip of container 10 intercommunication is provided with the liquid drop head 9.
The structure of the pump head 4 with the fast tube replacement is as follows: the automatic pump pipe locking device comprises an upper cover 41, a pipe clamp 42, a synchronous disc 43, a buckling shell 44, a spring 45, a sliding cover 46 and a turnover cover 47, wherein the synchronous disc 43 is connected with a power output end of a stepping motor 6 through a motor support, the buckling shell 44 is pressed on the synchronous disc 43 through the upper cover 41 matched with the box turnover cover 47 and the sliding cover 46, the spring 45 is arranged between the sliding cover 46 and the buckling shell 44, and the pipe clamp 42 is arranged on the motor support and used for limiting a pump pipe.
The stepping motor 6 is either a brushless speed regulating motor or a servo motor.
The utility model discloses a step motor, a motor that can accurate governing speed and operation volume. The closed-loop control of the liquid conveying or canning process is realized through the cooperation of the stepping motor, the peristaltic pump and the weighing sensor. When a certain amount of liquid needs to be delivered or canned, the receiving container can be placed on a weighing sensor, and whether the weight of the delivered or canned liquid reaches a set value or not is monitored by the weighing sensor. Wherein the precision of the weighing sensor is determined according to the requirement. Use the utility model discloses technical scheme has following several advantages:
1. effectively avoiding cross contamination among liquids. The peristaltic pump is convenient for change the showing advantage of pump line and pump head for this system can switch the liquid kind of carrying or canning at will, effectively avoids the cross contamination that different liquid change brought.
2. The closed-loop control realizes quantitative conveying, the receiving container is placed on the weighing sensor, whether the weight of the conveyed or canned liquid reaches a set value or not is monitored through the weighing sensor, so that flow setting from an instrument end can be realized, flow conveying is carried out according to the set value by the pump, and then the flow value of the conveyed liquid is fed back to the closed-loop control of the instrument by the weighing sensor, so that the aim of effectively carrying out quantitative conveying or canning on the liquid is fulfilled.
3. Calibration is not required. Unlike the pump pipe, the weighing sensor does not change with the change of factors such as the service time and the service temperature, and the performance of the weighing sensor is stable, reliable and accurate.
4. The monitoring parameters can be set individually. In use, the user is free to select the weight or volume of liquid delivered as a monitoring parameter. When the liquid volume needs to be monitored, the density calculation formula rho = m/v and the weight calculation formula G = mg can be used for carrying out weight-volume interconversion. The switching of monitoring the weight and the volume can be completed only by inputting the density of the liquid into the system.
The utility model discloses a motor that can accurate control speed and operation volume, like step motor, brushless adjustable speed motor, the peristaltic pump is driven to servo motor etc. realizes accurate, reliable and stable speed governing control. It should be noted that, in the initial stage of liquid transportation or filling, the motor is controlled to operate rapidly, and when the liquid transportation or filling is about to reach the set value, the motor is controlled to operate at a reduced speed until the liquid transportation or filling is completed.
The utility model discloses well weighing sensor for monitor peristaltic pump output liquid's weight, when the value that reaches the user setting when monitoring value, system program control peristaltic pump bring to rest. The use of a load cell thus also eliminates the need for calibration work of the pump.
The utility model discloses well peristaltic pump supports and trades the pipe fast, helps the user to realize swiftly trading pipe work according to the demand, and the cross contamination problem when avoiding carrying or canning different liquid is brought the facility for the switching of different liquid transport work.
The functions of the components in the utility model are as follows.
(1) Liquid storage barrel: the liquid to be delivered is stored.
(2) Pump pipe: a pipeline for conveying liquid.
(3) Weighing and metering pump: the device consists of a man-machine interactive touch display screen, a motor drive and a pump head.
(4) The pump head of the pipe is changed fast: a peristaltic pump head supporting a quick tube replacement structure.
(5) A touch display screen: and the man-machine interaction unit is used for realizing the display of parameters and states and the interaction of control.
(6) A stepping motor; an electric motor for converting electric pulse signals into corresponding angular or linear displacement features that its rotation speed and rotation angle can be accurately controlled by program.
(7) Sensor signal line: and through a sensor signal line, the weighing and metering reads a real-time value of the weighing sensor, whether the conveyed liquid amount reaches a set value of a user is judged, and if the conveyed liquid amount reaches the set value, the weighing and metering pump controls the pump to stop running.
(8) A weighing sensor: weigh the liquid in the upper container bottle.
(9) A liquid dropping head: the liquid dropping head has the characteristics that the smaller the outlet is, the higher the liquid discharging precision is.
Container r: receiving the pumped liquid and placing the pumped liquid on a weighing sensor.
It should be noted that: the utility model discloses well weighing sensor's precision is high more, and the flow monitoring precision of liquid is also high more. The control pump in the utility model firstly runs at a higher speed to reduce the time for conveying liquid; when the flow of the conveying liquid is about to reach the set value, the running speed of the pump is reduced, so that the influence caused by the feedback delay phenomenon caused by the sensitivity of the sensor can be effectively reduced, and the condition that the liquid outlet quantity exceeds the requirement of a user is avoided.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (3)
1. A weighing and metering pump is characterized by comprising a liquid storage barrel (1), a pump pipe (2), a weighing and metering pump (3), a quick pipe changing pump head (4), a touch display screen (5), a stepping motor (6), a sensor signal wire (7), a weighing sensor (8), a dripper (9) and a container (10), wherein the liquid storage barrel (1) is communicated with the container (10) through the pump pipe (2) via the weighing and metering pump (3), and a solution in the liquid storage barrel (1) is quantitatively delivered into the container (10) through the weighing and metering pump (3);
the utility model discloses a weighing and metering device, including weighing and metering pump (3), the upper portion sets up touch display screen (5), the lower part of weighing and metering pump (3) is provided with trades a tub pump head (4) fast, the afterbody of trading tub pump head (4) fast is provided with step motor (6), step motor (6) are used for driving and trade tub pump head (4) action fast, container (10) set up on the tray of weighing sensor (8), be connected through sensor signal line (7) between weighing sensor (8) and weighing and metering pump (3), be provided with control module in weighing and metering pump (3), control module is connected with step motor (6), touch display screen (5) and sensor signal line (7) electricity, control module is used for controlling weighing and metering pump (3) work, with the pipeline tip of container (10) intercommunication is provided with drip head (9).
2. A weighing and metering pump according to claim 1, wherein the quick change pump head (4) is of the structure: including upper cover (41), pipe clamp (42), synchronization disc (43), detain shell (44), spring (45), sliding closure (46) and flip (47), synchronization disc (43) are connected with step motor (6)'s power take off end, upper cover (41) are joined in marriage box flip (47) and sliding closure (46) and will be detained shell (44) and press on synchronization disc (43), sliding closure (46) and detain and be provided with spring (45) between shell (44), pipe clamp (42) set up in the one end of spring (45), are fixed in the spacing inslot of the both sides of upper cover (41).
3. A weighing and metering pump according to claim 1, characterised in that the stepping motor (6) is either a brushless adjustable-speed motor or a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222339778.8U CN218542559U (en) | 2022-09-03 | 2022-09-03 | Weighing metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222339778.8U CN218542559U (en) | 2022-09-03 | 2022-09-03 | Weighing metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218542559U true CN218542559U (en) | 2023-02-28 |
Family
ID=85270093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222339778.8U Active CN218542559U (en) | 2022-09-03 | 2022-09-03 | Weighing metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218542559U (en) |
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2022
- 2022-09-03 CN CN202222339778.8U patent/CN218542559U/en active Active
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