A liquid product filtration device

Abstract

This utility model discloses a liquid product filtration device, relating to the field of liquid treatment technology in industries such as fine chemicals. The device includes a first switching valve, a magnetic pump, a filter cartridge, and an automatic three-stage valve connected in sequence. A pressure gauge is installed on the filter cartridge, and a return pipeline with an automatic switching valve connects the magnetic pump to the upper-level equipment. The magnetic pump provides stable power, impurities are filtered through the filter element inside the filter cartridge, and the automatic three-stage valve precisely controls the flow rate. The return pipeline ensures circulating filtration and safe pump operation. This device solves the problems of unstable liquid delivery, impurities affecting quality, and insufficient delivery accuracy in existing technologies, offering advantages such as stable power, high-efficiency filtration, accurate delivery, and safe operation.

Description

Technical Field

[0001] This utility model relates to the field of liquid filtration technology, specifically to a liquid product filtration device. Background Technology

[0002] In specialized industries such as fine chemicals, the transport and packaging of liquid products typically involves moving from an upper preparation tank into a lower container or packaging drum. However, existing transport processes suffer from the following problems: First, the liquid relies on gravity for flow, resulting in unstable power and potential interruptions or flow rate fluctuations, impacting packaging efficiency. Second, fine impurities in the liquid may enter downstream unfiltered, leading to substandard product quality. Therefore, there is an urgent need for a liquid processing device that can provide stable power and effectively filter impurities to address the shortcomings of existing technologies. Utility Model Content

[0003] The present invention aims to provide a liquid product filtration device to solve the problems mentioned above.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A liquid product filtration device includes a first switching valve, a magnetic pump, a filter cartridge, and a three-stage valve. The inlet of the first switching valve is connected to the liquid inlet, the outlet of the first switching valve is connected to the inlet of the magnetic pump, the outlet of the magnetic pump is connected to the inlet of the filter cartridge, the outlet of the filter cartridge is connected to the inlet of the three-stage valve, and the outlet of the three-stage valve is connected to the liquid outlet.

[0005] Furthermore, a pressure gauge is provided on the filter cartridge, and the pressure gauge is connected to the internal cavity of the filter cartridge.

[0006] Furthermore, it also includes a second switching valve, one end of which is connected to the pipeline between the outlet of the filter cartridge and the inlet of the three-stage valve, and the other end of which is connected to the liquid return port to form a return pipeline.

[0007] Furthermore, the filter cartridge is equipped with a filter element, the input end of which corresponds to the inlet of the filter cartridge, and the output end of which corresponds to the outlet of the filter cartridge.

[0008] Furthermore, the three-stage valve is connected to the scale signal and can adjust the opening and closing degree according to the scale feedback signal.

[0009] Furthermore, the second switching valve is signal-linked with the three-stage valve; when the three-stage valve is closed, the second switching valve opens, and when the three-stage valve is open, the second switching valve closes.

[0010] This utility model has the following beneficial effects: Using a magnetic pump as the power source ensures stable output pressure, avoiding flow rate fluctuations caused by gravity flow and guaranteeing a continuous and stable delivery of liquid to downstream equipment, thus improving delivery efficiency and stability. The filter element within the filter cartridge effectively filters insoluble fine impurities in the liquid, significantly reducing quality issues in downstream products caused by impurities and improving the purity and quality of the liquid products. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a liquid product filtration device according to the present invention. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and relevant knowledge. Obviously, the described applications are only some embodiments of the present invention, and not all embodiments.

[0013] The present invention will be further described in detail below with reference to the accompanying drawings.

[0014] Reference Figure 1 As shown, a liquid product filtration device includes a first switching valve 1, a magnetic pump 2, a filter cartridge 3, a three-stage valve 4, a pressure gauge 5, and a second switching valve 6. The inlet of the first switching valve 1 is connected to the liquid inlet 7, and its outlet is connected to the inlet of the magnetic pump 2, serving as the main switch for controlling the liquid entering the device. The outlet of the magnetic pump 2 is connected to the inlet of the filter cartridge 3, providing stable power for liquid delivery. The filter cartridge 3 contains a filter element, with its input end corresponding to the inlet of the filter cartridge 3 and its output end corresponding to the outlet of the filter cartridge 3, used to filter insoluble impurities in the liquid. The outlet of the filter cartridge 3 is connected to the inlet of the three-stage valve 4, and the outlet of the three-stage valve 4 is connected to the liquid outlet 8, allowing for precise control of the liquid flow rate by adjusting the switching degree. Furthermore, in this invention, the three-stage valve 4 is preferably an automatic three-stage valve; the second switching valve 6 is preferably an automatic switching valve.

[0015] Pressure gauge 5 is installed on filter cartridge 3 and communicates with the internal cavity of filter cartridge 3 to monitor the operating status of filter cartridge 3; one end of the second switching valve 6 is connected to the pipeline between the outlet of filter cartridge 3 and the inlet of three-stage valve 4, and the other end is connected to liquid return port 9 to form a return pipeline. The second switching valve 6 is linked with the automatic three-stage valve 4. When the automatic three-stage valve 4 is closed, the second switching valve 6 is opened, and when the automatic three-stage valve 4 is opened, the second switching valve 6 is closed.

[0016] Furthermore, the automatic three-stage valve 4 is connected to the high-precision weighing scale signal and can adjust the opening degree according to the feedback signal from the weighing scale; the magnetic pump 2 has an output pressure range of 0.1-0.3MPa, ensuring stable power and meeting the conveying requirements; This invention employs a magnetic pump 2 as the power source for delivery, with its output pressure stabilized at 0.1-0.3 MPa. This avoids flow rate fluctuations caused by gravity flow, ensuring a continuous and stable delivery of liquid to downstream equipment, thus improving delivery efficiency and stability. Furthermore, the filter element within the filter cartridge 3 effectively filters insoluble fine impurities in the liquid, significantly reducing quality problems in downstream products caused by impurities and improving the purity and quality of the liquid product.

[0017] Furthermore, by linking the automatic three-stage valve 4 with the high-precision weighing scale signal, the opening and closing degree can be adjusted in real time according to the needs of the downstream equipment, achieving precise control of liquid flow, reducing material waste and metering errors, and improving the accuracy of packaging or subsequent processing. By setting up a return pipeline with a second switching valve 6, when the liquid outlet does not need to receive liquid, the automatic three-stage valve 4 closes, and the second switching valve 6 opens, allowing the liquid to return to the liquid return port for circulation and filtration. Furthermore, the liquid return port is connected to the liquid inlet via a valve, ensuring the safe and stable operation of the magnetic pump 2, preventing pump idling or overload, and enabling multiple filtrations of the liquid, further improving liquid purity.

[0018] In this invention, the pressure gauge 5 on the filter cartridge 3 can reflect the internal pressure changes in real time. Operators can judge whether the filter element is blocked by the pressure value. An abnormal increase in pressure indicates that the filter element may be blocked, which facilitates timely maintenance and replacement and ensures the continuous and efficient operation of the device.

[0019] Example 1: A liquid product filtration device. This liquid product filtration device is suitable for the conveying and packaging of liquid products in the fine chemical industry. Its components include: a first switching valve 1, a magnetic pump 2 (MP-100 model, output pressure 0.2MPa), a filter cartridge 3 with a built-in 5μm precision polypropylene filter element, an automatic three-stage valve 4 (ZDF-3 model, supporting 0-100% on / off adjustment), a pressure gauge 5 (range 0-1MPa), and a second switching valve 6 (2W-160-15 model). The connection relationships of each component are as follows: The inlet of the first switching valve 1 is connected to the liquid inlet 7 via a flange, and the outlet is sealed to the inlet of the magnetic pump 2 via a pipe. The first switching valve 1 adopts a ball valve structure, which facilitates manual and quick opening or closing of the liquid passage, plays a central control role, and prevents liquid leakage during equipment maintenance.

[0020] The outlet of the magnetic pump 2 is connected to the inlet of the filter cartridge 3 through a pipe. The magnetic pump 2 achieves liquid delivery through electromagnetic drive, without mechanical contact sealing, avoiding the leakage problem of traditional pumps. Moreover, its output pressure is stable at 0.2MPa, providing continuous and stable power to the liquid, ensuring that the liquid can overcome the pipe resistance and filtration resistance and smoothly enter the filter cartridge 3.

[0021] The polypropylene filter element inside filter cartridge 3 is cylindrical, with its inlet end facing the inlet of filter cartridge 3. After the liquid enters, it can flow evenly across the surface of the filter element. The microporous structure of the filter element traps insoluble fine impurities in the liquid, such as particles with a diameter ≥5μm. The filtered clean liquid flows from the output end of the filter element to the outlet of filter cartridge 3, effectively improving the quality of the liquid product.

[0022] The pressure gauge 5 at the top of the filter cartridge 3 is connected to the internal cavity via a conduit, allowing real-time display of the pressure value inside the filter cartridge 3. During normal operation, the pressure is stable at 0.15-0.18 MPa. When the filter element becomes clogged, the resistance to liquid flow increases, and the pressure rises to above 0.2 MPa. Operators can use this information to determine when to replace the filter element and ensure filtration efficiency.

[0023] The outlet of filter cartridge 3 is connected to the inlet of automatic three-stage valve 4 via a pipe. The outlet of automatic three-stage valve 4 is connected to liquid outlet 8, and automatic three-stage valve 4 is connected to a high-precision scale (accuracy ±0.1g) holding the packaging barrel via a signal line. When the scale detects that the weight of the liquid in the packaging barrel is close to the set value, it sends a signal to automatic three-stage valve 4, causing it to gradually reduce its opening degree, such as from 100% to 30%, thus reducing the flow rate. When the set weight is reached, the signal triggers automatic three-stage valve 4 to close completely, achieving precise quantitative delivery and reducing errors.

[0024] One end of the second switching valve 6 is connected to the pipe between the outlet of the filter cartridge 3 and the inlet of the three-stage valve 4, and the other end is connected to the liquid return port 9 through the return pipe. The liquid return port is connected to the liquid inlet 7, forming a return loop. The second switching valve 6 and the automatic three-stage valve 4 are linked by signals: when the automatic three-stage valve 4 closes because the packaging barrel is full, the second switching valve 6 immediately opens, and the liquid returns to the preparation storage tank through the return pipe, avoiding damage to the magnetic pump 2 due to a sudden pressure increase caused by outlet blockage. At the same time, the liquid can re-enter the device for circulation filtration during the return process to further remove impurities. When the scale sends a new feeding signal, the automatic three-stage valve 4 opens, and the second switching valve 6 closes simultaneously, and the liquid flows back to the packaging barrel, realizing continuous operation.

[0025] Operating steps: Connecting pipes: Connect the inlet of the first switch valve 1 to the outlet pipe (liquid inlet end) of the upper preparation tank, and connect the outlet of the automatic three-stage valve 4 to the feed pipe (liquid outlet end) of the lower packaging barrel, ensuring that all pipes are well sealed.

[0026] Start-up device: Open the first switch valve 1, and the liquid enters the device pipeline from the preparation storage tank; start the magnetic pump 2, and the liquid is transported to the filter cartridge 3 under the action of 0.2MPa pressure.

[0027] Filtration and monitoring: After the liquid enters the filter cartridge 3, it is filtered by a 5μm polypropylene filter element, and impurities are trapped. The clean liquid flows to the automatic three-stage valve 4. The operator monitors the status of the filter element by observing the reading of the pressure gauge 5, which is within the normal range of 0.15-0.18MPa.

[0028] Precise delivery: The automatic three-stage valve 4 adjusts its opening degree based on feedback signals from the high-precision scale. For example, when the liquid weight in the packaging barrel reaches 90% of the set value, the scale sends a signal, and the automatic three-stage valve 4 adjusts its opening degree from 100% to 30%, reducing the flow rate; when the set value is reached, the automatic three-stage valve 4 closes completely, stopping the delivery of liquid to the packaging barrel.

[0029] Cycle and restart: When the automatic three-stage valve 4 is closed, the second switch valve 6 is opened, and the liquid returns to the preparation storage tank through the return pipe. The magnetic pump 2 continues to run and the pressure is stable. When a new packaging barrel is replaced, the scale sends a start signal, the second switch valve 6 is closed, and the automatic three-stage valve 4 is opened. The above steps are repeated to realize the cycle operation.

[0030] Although some embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, and all such changes and alterations should fall within the scope of the present invention.

Claims

1. A liquid product filtration device, characterized by, It includes a first switching valve (1), a magnetic pump (2), a filter cartridge (3), and a three-stage valve (4). The inlet of the first switching valve (1) is connected to the liquid inlet end (7), the outlet of the first switching valve (1) is connected to the inlet of the magnetic pump (2), the outlet of the magnetic pump (2) is connected to the inlet of the filter cartridge (3), the outlet of the filter cartridge (3) is connected to the inlet of the three-stage valve (4), and the outlet of the three-stage valve (4) is connected to the liquid outlet end (8).

2. The apparatus of claim 1, wherein, The filter cylinder (3) is equipped with a pressure gauge (5), which is connected to the internal cavity of the filter cylinder (3).

3. The apparatus of claim 1, wherein, It also includes a second switching valve (6), one end of which is connected to the pipeline between the outlet of the filter cartridge (3) and the inlet of the three-stage valve (4), and the other end of which is connected to the liquid return port (9) to form a return pipeline.

4. The apparatus of claim 1, wherein, The filter cylinder (3) is equipped with a filter element. The input end of the filter element corresponds to the inlet of the filter cylinder (3), and the output end of the filter element corresponds to the outlet of the filter cylinder (3).

5. The apparatus of claim 1, wherein, The three-section valve (4) is connected to the scale signal and can adjust the opening degree according to the scale feedback signal.

6. The apparatus of claim 3, wherein, The second switching valve (6) is linked to the three-stage valve (4) by signal. When the three-stage valve (4) is closed, the second switching valve (6) is opened, and when the three-stage valve (4) is opened, the second switching valve (6) is closed.

7. The apparatus of claim 3, wherein, The liquid inlet (7) is connected to the liquid return port (9) via a valve.

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