CN218972420U

CN218972420U - Accurate control device of feeding system

Info

Publication number: CN218972420U
Application number: CN202221930204.1U
Authority: CN
Inventors: 林坤; 莫超
Original assignee: Hefei Guofeng Advanced Basic Materials Technology Co ltd
Current assignee: Hefei Guofeng Advanced Basic Materials Technology Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-05-05
Anticipated expiration: 2032-07-21

Abstract

The utility model provides an accurate control device of a feeding system, which comprises a supply unit, a receiving unit and a conveying unit, wherein the supply unit is connected with the receiving unit through the conveying unit, and the accurate control device comprises a control unit, a control unit and a control unit, wherein the control unit comprises a control unit, a control unit and a control unit, and the control unit is connected with the control unit, wherein the control unit comprises a control unit and a: the conveying unit comprises a pipeline, a solvent conveying pump, a pneumatic switching valve, a control module and a metering module. The utility model has novel design and simple operation, through the arrangement of the pneumatic switch valve and the like, when the supply unit normally transmits the solvent to the receiving unit through the pipeline, the receiving unit receives the standard solvent quantity, and the pneumatic switch valve closes the pipeline between the partition metering module and the dissolution kettle tank when the solvent transmission pump stops working, thereby achieving the effect of rapidly cutting off the solvent, preventing the solvent transmission pump from continuously transmitting the solvent into the dissolution kettle tank due to mechanical inertia, causing the fact that the actually transmitted solvent quantity is inconsistent with the standard quantity, and effectively improving the accuracy of single-time solvent quantity transmission into the dissolution kettle tank.

Description

Accurate control device of feeding system

Technical Field

The utility model relates to the technical field of film synthesis, in particular to an accurate control device of a feeding system.

Background

The polyimide film synthesizing process is important to the consistency of all the performances of the film products, the consistency of the volumes of the solvents in the tanks and the like, and plays an important role in the consistency of the performance parameters such as the film surface shrinkage rate, the tensile strength and the like.

At present, a conveying pump is used for conveying the solvent into the kettle tank, and a metering module is used for counting the flow of the solvent. However, due to the self-attribute of the transfer pump, after the solvent reaches the set accumulated flow, the transfer pump is turned off, and due to mechanical inertia, the transfer pump cannot stop immediately, and the transfer pump can drive part of the solvent to enter the kettle tank through the pipeline, so that personnel are required to monitor in real time, and the cost is increased. Meanwhile, the solvent under the inertial drive of the conveying pump can drive the solvent in the pipeline of the vertical part of the feed inlet of the kettle tank to enter the kettle tank, so that the quantity of the solvent actually entering the kettle tank is inconsistent with the standard, the accuracy of feeding the film raw material into the kettle tank each time is reduced, and the consistency and stability of the production quality of the film raw material are also reduced.

Disclosure of Invention

Based on the technical problems in the background technology, the utility model provides a precise control device of a feeding system, which comprises a feeding unit, a receiving unit and a conveying unit, wherein the feeding unit is connected with the receiving unit through the conveying unit, and the precise control device comprises the following components: the conveying unit comprises a pipeline, a solvent conveying pump, a pneumatic switch valve, a control module and a metering module, wherein the pipeline is used for connecting the supply unit and the receiving unit, the solvent conveying pump is assembled on the pipeline, the metering module is assembled on the pipeline between the solvent conveying pump and the receiving unit, the pneumatic switch valve is assembled on the pipeline between the metering module and the receiving unit, and the solvent conveying pump, the pneumatic switch valve and the metering module are electrically connected with the control module and are controlled by the control module.

Preferably, the supply unit comprises a solvent liquid storage tank, the receiving unit comprises a dissolution kettle tank, and the solvent liquid storage tank is connected with the dissolution kettle tank through a pipeline.

Preferably, the metering module comprises a flowmeter, the flowmeter is assembled on the pipeline, and the flowmeter is electrically connected with the control module.

Preferably, the metering module is a weighing module, and the weighing module is used for weighing the dissolution kettle tank.

Preferably, the pipeline is provided with a filter. The filter is used for guaranteeing the cleanliness of the solvent in the pipeline and filtering out impurities in the solvent.

Preferably, the pipeline is provided with a standby solvent delivery pump, and the standby solvent delivery pump is electrically connected with the control module and controlled by the control module. When the solvent delivery pump that is operating normally requires repair or maintenance, the backup solvent delivery pump may be put into service.

Compared with the prior art, the accurate control device for the feeding system provided by the utility model adopts the technical scheme, and achieves the following technical effects:

1. through the arrangement of the pneumatic switch valve and the like, when the supply unit normally conveys the solvent to the receiving unit through the pipeline, and after the receiving unit receives the standard solvent quantity, the pneumatic switch valve closes the pipeline between the partition metering module and the dissolution kettle tank while the solvent conveying pump stops working, so as to achieve the effect of rapidly cutting off the solvent, prevent the solvent conveying pump from continuously conveying the solvent into the dissolution kettle tank due to mechanical inertia, so that the actually conveyed solvent quantity is inconsistent with the standard quantity, effectively improve the accuracy of single-time solvent quantity conveying into the dissolution kettle tank, reduce personnel monitoring, and improve the consistency and stability of production quality;

2. through setting up two kinds of measurement modes of measurement module, both can select one to measure, also can insert both simultaneously, when both are inserted simultaneously, can select one to be reserve measurement mode, and this reserve measurement mode can put into use when normal measurement mode breaks down or maintenance, easy operation, convenient to use.

Drawings

Fig. 1 is an overall system diagram of the present utility model.

In the figure: 1. the system comprises a supply unit, a receiving unit, a pipeline 3, a solvent delivery pump 4, a pneumatic switching valve 5, a control module 6, a flowmeter 7, a weighing module 8, a filter 9 and a standby solvent delivery pump 10.

Detailed Description

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1, the utility model provides an accurate control device of a feeding system, which comprises a feeding unit 1, a receiving unit 2 and a conveying unit, wherein the feeding unit 1 is connected with the receiving unit 2 through the conveying unit, specifically, the feeding unit 1 comprises a solvent liquid storage tank, a solvent is filled in the solvent liquid storage tank, the receiving unit comprises a dissolution kettle tank, and the solvent liquid storage tank conveys the solvent into the dissolution kettle tank through the conveying unit. Wherein: the conveying unit comprises a pipeline 3, a solvent conveying pump 4, a pneumatic switching valve 5, a control module 6 and a metering module, wherein the pipeline 3 is used for connecting the supply unit 1 and the receiving unit 2, the solvent conveying pump 4 is assembled on the pipeline 3, and the solvent conveying pump 4 is used for conveying solvent; the metering module is assembled on the pipeline 3 between the solvent delivery pump 4 and the receiving unit 2, and monitors the pipeline flow in real time; the pneumatic switch valve 5 is assembled on the pipeline 3 between the metering module and the dissolution kettle tank, and the solvent delivery pump 4, the pneumatic switch valve 5 and the metering module are electrically connected with the control module 6 and are controlled by the control module 6. The pipeline 3 is provided with a filter 9, and the filter 9 is used for guaranteeing the cleanliness of the solvent in the pipeline 3 and filtering impurities in the solvent.

The specific working principle is as follows: the solvent storage tank utilizes the solvent delivery pump 4 to deliver the solvent in the solvent storage tank into the dissolution tank through the pipeline 3, in the process, the metering module meters the solvent quantity delivered to the dissolution tank, when the metered solvent quantity reaches a set quantity, the metering module sends a signal to the control module 6, the control module 6 correspondingly acts on the solvent delivery pump 4 and the pneumatic switch valve 5, and then the solvent delivery pump 3 stops working, and the pneumatic switch valve 5 is closed; the pipeline 3 between the metering module and the dissolution tank is in a blocking state by closing the pneumatic switch valve 5, and then under the condition that the solvent conveying pump 5 is in a stop working state, the solvent conveying pump 4 can continuously convey a part of solvent in the pipeline 3 due to mechanical inertia, and at the moment, the pipeline 3 between the metering module and the dissolution tank is blocked by the pneumatic switch valve 5, so that the solvent in the pipeline 3 is prevented from continuously entering the dissolution tank, and the solvent quantity conveyed in the dissolution tank is standard.

Referring to fig. 1, in order to prevent the loss of the long-term operation of the solvent transfer pump 4 and to facilitate the daily maintenance, a standby solvent transfer pump 10 is mounted on the pipe 3, and the standby solvent transfer pump 10 is electrically connected to the control module 6 and controlled by the control module 6. When the normal operation of the solvent delivery pump 4 requires repair or maintenance, the backup solvent delivery pump 10 may be put into service.

Embodiment one:

the metering module comprises a flowmeter 7, the flowmeter 7 is assembled on the pipeline 3, and the flowmeter 7 is electrically connected with the control module 6. In the use process, the flowmeter 7 is used for flow statistics, standard parameters of the flowmeter 7 are set, when the solvent flow in the pipeline 3 reaches the standard quantity, the flowmeter 7 can send a signal to the control module 6, the control module 6 correspondingly acts on the solvent delivery pump 4 and the pneumatic switch valve 5, so that the solvent delivery pump 4 stops working, the pneumatic switch valve 5 closes the partition pipeline 3, and redundant solvent in the pipeline 3 is prevented from flowing into the dissolution kettle tank.

Embodiment two:

the weighing module 8 is used for weighing the dissolution kettle tank. The method comprises the steps that parameters when standard dissolution amount is set in a dissolution tank by a weighing module, the parameters are used as standard parameters, a solvent conveying pump 4 continuously conveys solvent into the dissolution tank in the use process, the weighing module 8 is used for monitoring the whole weight of the dissolution tank, when the whole weight of the dissolution tank reaches the set standard parameters, the weighing module 8 sends a signal to a control module 6, the control module 6 correspondingly acts on the solvent conveying pump 4 and a pneumatic switch valve 5, the solvent conveying pump 4 is further enabled to stop working, the pneumatic switch valve 5 closes an isolation pipeline 3, and redundant solvent in the pipeline 3 is prevented from flowing into the dissolution tank.

The control module 6 provided in any of the above embodiments is used for controlling the solvent delivery pump 4, the metering module, and the pneumatic switching valve 5 to operate orderly. The control module 6 may be any suitable computing device, such as a server, a programmable logic controller (PLC controller), etc., or may be an integration of a computer device, where the control module 6 has functions of receiving information and sending control commands, etc., and the control module 6 may control each component to perform corresponding actions by using a wired communication or a wireless communication manner.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a feeding system accurate control device which characterized in that, includes supply unit (1), receiving unit (2), conveying unit, supply unit (1) are connected with receiving unit (2) through conveying unit, wherein: the conveying unit comprises a pipeline (3), a solvent conveying pump (4), a pneumatic switching valve (5), a control module (6) and a metering module, wherein the pipeline (3) is used for connecting the supply unit (1) and the receiving unit (2), the solvent conveying pump (4) is assembled on the pipeline (3), the metering module is assembled on the pipeline (3) between the solvent conveying pump (4) and the receiving unit (2), the pneumatic switching valve (5) is assembled on the pipeline (3) between the metering module and the receiving unit (2), and the solvent conveying pump (4), the pneumatic switching valve (5) and the metering module are electrically connected with the control module (6) and are controlled by the control module (6).

2. The precise control device of a feeding system according to claim 1, characterized in that the supply unit (1) comprises a solvent reservoir tank and the receiving unit comprises a dissolution tank, the solvent reservoir tank being connected to the dissolution tank by a pipeline (3).

3. The precise control device of a feeding system according to claim 1 or 2, characterized in that the metering module comprises a flow meter (7), the flow meter (7) is assembled on the pipeline (3), and the flow meter (7) is electrically connected with the control module (6).

4. The precise control device of a feeding system according to claim 2, characterized in that the metering module is a weighing module (8), the weighing module (8) being used for weighing the dissolution tank.

5. The precise control device of a feeding system according to any one of claims 1-4, characterized in that the pipe (3) is equipped with a filter (9).

6. The precise control device of a feeding system according to claim 5, wherein a standby solvent delivery pump (10) is arranged on the pipeline (3), and the standby solvent delivery pump (10) is electrically connected with the control module (6) and controlled by the control module (6).