A sample testing device for the research and development of separation membranes

Abstract

This utility model relates to the field of separation membranes, and particularly to a sample testing device for separation membrane research and development. It includes a testing chamber with an insertion interface at the center of its top outer wall. A fixing structure is installed at the insertion interface, and partition plates are installed on the inner wall of the testing chamber at both ends of the fixing structure. The fixing structure includes a fixing frame, a placement groove on one side of the outer wall of the fixing frame, a pressing frame slidably connected in the placement groove, fastening grooves equidistantly located on one side of the outer wall of the fixing frame, and fastening protrusions equidistantly welded to the outer wall of the pressing frame at the fastening grooves. In this utility model, the detection gas enters the testing chamber under negative pressure. After passing through the separation membrane, the detection gas enters the other end of the testing chamber. An air quality sensor detects the air quality inside both ends of the testing chamber, facilitating detection, enabling quantitative detection, improving detection accuracy, and reducing error values.

Description

Technical Field

[0001] This utility model relates to the field of separation membrane technology, and in particular to a sample testing device for separation membrane research and development. Background Technology

[0002] Separation membranes are membrane materials with selective permeation capabilities. They are typically classified according to their separation mechanism and application range into microfiltration membranes, ultrafiltration membranes, nanofiltration membranes, reverse osmosis membranes, pervaporation membranes, ion exchange membranes, etc. A separation membrane is an interface that separates two phases or two parts of a fluid substance in a specific way. The membrane can be solid or liquid. The fluid substance separated by the membrane can be liquid or gaseous.

[0003] The patent search revealed a gas separation membrane permeability testing device (202022286526.4). This patent enables precise control of the test gas pressure in gas separation membrane permeability testing experiments, improving the accuracy of the test results. However, relying on a screw to move the gas results in uneven airflow through the membrane, leading to significant errors in multiple test results. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems and shortcomings by proposing a sample testing device for the research and development of separation membranes. The device activates the air quality sensor and the solenoid valve in the separator plate via the control panel. Under negative pressure, the gas enters the testing chamber. After passing through the separation membrane, the gas enters the other end of the testing chamber. The air quality sensor detects the air quality inside both ends of the testing chamber, facilitating quantitative detection, improving accuracy, reducing error, and solving the problem of large errors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sample testing device for the research and development of separation membranes includes a testing box. An insertion interface is provided at the center of the top outer wall of the testing box, and a fixing structure is installed at the insertion interface. Partition plates are installed on the inner wall of the testing box at both ends of the fixing structure. The fixing structure includes a fixing frame, a placement groove opened on one side outer wall of the fixing frame, a pressing frame slidably connected in the placement groove, fastening grooves opened at equal intervals on one side outer wall of the fixing frame, fastening protrusions welded at equal intervals to the fastening grooves on one side outer wall of the pressing frame, and a mounting plate welded to the top outer wall of the fixing frame.

[0007] Preferably, the outer wall of the fixing frame is provided with a sealing strip one at the bottom outer wall of the mounting plate, and a sealing strip two is adhered to the center of the three outer walls of the fixing frame. The sealing strip one and the sealing strip two are respectively attached to the inner wall of the detection box and the inner wall of the insertion interface.

[0008] Preferably, a connecting pipe is connected to the center of the outer wall at both ends of the detection box, and a valve is installed at one end of the connecting pipe, while a detection gas cylinder is connected to the outer wall of the other end of the connecting pipe.

[0009] Preferably, both ends of the outer wall of the testing box are connected to a suction pipe, and the other end of the suction pipe is connected to a vacuum pump. A valve is installed on the outer wall of one end of the suction pipe.

[0010] Preferably, the top outer wall of the detection box is provided with mounting ports at both ends, and an air quality sensor is installed on the inner wall of the mounting port. A control panel is installed on the top outer wall of the detection box, and the air quality sensor is connected to the signal input terminal of the control panel through a signal line.

[0011] Preferably, a vent pipe is provided at the center of the partition plate, and a solenoid valve is installed at one end of the vent pipe.

[0012] Preferably, a separation membrane body is provided between the placement groove of the fixing frame and the pressing frame.

[0013] Preferably, the vacuum pump and the solenoid valve are connected to the control panel via wires, and the control panel is connected to a power source via wires.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Lay the separation membrane flat in the placement slot of the fixing groove, align the pressing frame with the fastening groove and install it in the fixing frame. The pressing frame fixes the separation membrane in the fixing frame, which facilitates the installation and fixation of the separation membrane.

[0016] 2. Activate the solenoid valve in the air quality sensor and the separator plate via the control panel. The gas to be detected enters the detection chamber under negative pressure. After passing through the separation membrane, the gas enters the other end of the detection chamber. The air quality sensor detects the air quality inside both ends of the detection chamber, which facilitates detection, quantitative detection, improves detection accuracy, and reduces error values. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural schematic diagram of a sample testing device for the research and development of a separation membrane proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the separator plate structure of a sample testing device for the research and development of a separation membrane proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the fixing frame structure of a sample testing device for the research and development of separation membranes proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of a sample testing device for the research and development of a separation membrane proposed in this utility model.

[0021] In the diagram: 1. Detection box, 2. Insertion interface, 3. Fixing structure, 4. Divider plate, 5. Connecting pipe, 6. Valve I, 7. Suction pipe, 8. Valve II, 9. Vacuum pump, 10. Detection gas tank, 11. Mounting port, 12. Air quality sensor, 13. Control panel, 14. Vent pipe, 15. Solenoid valve, 16. Fixing frame, 17. Placement slot, 18. Pressing frame, 19. Fastening slot, 20. Fastening protrusion, 21. Mounting plate, 22. Sealing strip I, 23. Sealing strip II. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1:

[0024] Reference Figure 1-4 A sample testing device for the research and development of a separation membrane includes a testing chamber 1. An insertion interface 2 is provided at the center of the top outer wall of the testing chamber 1, and a fixing structure 3 is installed at the insertion interface 2. A partition plate 4 is installed at both ends of the inner wall of the testing chamber 1 at the fixing structure 3. The control panel 13 on the top of the testing chamber 1 detects the air quality inside the testing chamber 1 at both ends through an air quality sensor 12, determines the air quality values ​​at both ends, and obtains the performance of the separation membrane under a fixed amount of detection gas. This facilitates testing, facilitates quantitative testing, improves the accuracy of testing, and reduces the error value.

[0025] Connecting pipes 5 are connected to the center of the outer walls at both ends of the detection box 1, and valve 6 is installed at one end of the connecting pipe 5. The detection gas tank 10 is connected to the outer wall of the other end of the connecting pipe 5.

[0026] Both ends of the outer wall of the test box 1 are connected to the air extraction pipe 7, and the other end of the air extraction pipe 7 is connected to the vacuum pump 9. A valve 8 is installed on the outer wall of one end of the air extraction pipe 7.

[0027] A vent pipe 14 is provided at the center of the partition plate 4, and a solenoid valve 15 is installed at one end of the vent pipe 14.

[0028] A separation membrane body is provided between the placement groove 17 of the fixed frame 16 and the pressing frame 18.

[0029] Example 2:

[0030] Reference Figure 1 and Figure 3The fixed structure 3 includes a fixed frame 16, a placement groove 17 opened on one side of the outer wall of the fixed frame 16, a pressing frame 18 slidably connected in the placement groove 17, a fastening groove 19 opened at equal intervals on one side of the outer wall of the fixed frame 16, a fastening protrusion 20 welded at equal intervals on one side of the outer wall of the pressing frame 18 at the fastening groove 19, and a mounting plate 21 welded to the top outer wall of the fixed frame 16. The space separated by the partition plates 4 at both ends of the detection box 1 is evacuated. After the valve 6 of the connecting pipe 5 is opened, the negative pressure draws the detection gas in the detection gas tank 10 into one end of the detection box 1. Then, the detection gas passes through the separation membrane and enters the other end of the detection box 1 through the negative pressure, which facilitates the movement of the detection gas and facilitates the detection of the separation capacity of the separation membrane.

[0031] A sealing strip 22 is provided on the outer wall of the fixed frame 16 at the bottom outer wall of the mounting plate 21, and a sealing strip 23 is bonded to the center of the outer walls on three sides of the fixed frame 16. The sealing strip 22 and the sealing strip 23 are respectively attached to the inner wall of the test box 1 and the inner wall of the insertion interface 2. The separation membrane is located between the pressing frame 18 and the placement groove 17 of the fixed frame 16. The pressing frame 18 is installed in the placement groove 17 by the fastening protrusion 20. The pressing frame 18 fixes and seals the four sides of the separation membrane, which facilitates the fixation of the separation membrane and the testing.

[0032] The top outer wall of the detection box 1 is provided with mounting ports 11 at both ends, and an air quality sensor 12 is installed on the inner wall of the mounting port 11. A control panel 13 is installed on the top outer wall of the detection box 1. The air quality sensor 12 is connected to the signal input terminal of the control panel 13 through a signal line. The air quality sensors 12 at both ends of the detection box 1 detect the gas at both ends respectively, which makes it easy to intuitively judge the separation effect of the separation membrane and facilitates detection.

[0033] The vacuum pump 9 and the solenoid valve 15 are connected to the control panel 13 via wires, and the control panel 13 is connected to the power supply via wires.

[0034] Working principle: During use, the gas to be tested is added into the detection gas tank 10. The detection gas tank 10 is connected to one end of the connecting pipe 5 at one end of the detection chamber 1. The vacuum pump 9 in the extraction pipe 7 is started. After the vacuum pump 9 starts, valve 28 is opened to extract gas from both ends of the detection chamber 1 through the extraction pipe 7, reducing the gas content at both ends of the detection chamber 1. The separation membrane is laid flat in the placement groove 17 of the fixing groove 16. The pressing frame 18 is installed in the fixing frame 16 after being aligned with the fastening groove 19. The pressing frame 18 fixes the separation membrane in the fixing frame 16. The mounting plate 21 and the fixing frame 16 are inserted into the insertion interface 2. The sealing strip 22 and the sealing strip 23 seal the insertion interface 2 of the detection chamber 1. After the preparation stage is completed, the air quality sensor 12 and the solenoid valve 15 in the partition plate 4 are activated through the control panel 13, so that the inside of the detection chamber 1 comes into contact with the separation membrane. The valve 6 of the connecting pipe 5 at the detection gas tank 10 is opened, and the gas in the detection gas tank 10 enters the detection chamber 1 under the influence of negative pressure. Then, the detection gas passes through the separation membrane under the influence of negative pressure and enters the other end of the detection chamber 1. The control panel 13 on the top of the detection chamber 1 detects the air quality inside the two ends of the detection chamber 1 through the air quality sensor 12, judges the air quality values ​​at both ends, and obtains the performance of the separation membrane under a fixed amount of detection gas. This facilitates detection, facilitates quantitative detection, improves the accuracy of detection, and reduces the error value.

[0035] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A sample testing device for development of a separation membrane, comprising a detection case (1), characterized in that, The top outer wall of the test box (1) is provided with an insertion interface (2), and a fixing structure (3) is installed at the insertion interface (2) of the test box (1). The inner wall of the test box (1) is provided with partition plates (4) at both ends of the fixing structure (3). The fixing structure (3) includes a fixing frame (16), a placement groove (17) opened on one side of the outer wall of the fixing frame (16), a pressing frame (18) slidably connected in the placement groove (17), a fastening groove (19) opened at equal intervals on one side of the outer wall of the fixing frame (16), a fastening protrusion (20) welded at equal intervals on one side of the outer wall of the pressing frame (18) at the fastening groove (19), and a mounting plate (21) welded to the top outer wall of the fixing frame (16).

2. The sample testing device for separation membrane research and development according to claim 1, characterized in that, The outer wall of the fixed frame (16) is provided with a sealing strip (22) at the bottom outer wall of the mounting plate (21), and a sealing strip (23) is bonded to the center of the three outer walls of the fixed frame (16). The sealing strip (22) and the sealing strip (23) are respectively attached to the inner wall of the detection box (1) and the inner wall of the insertion interface (2).

3. The sample testing device for separation membrane research and development according to claim 1, characterized in that, The detection box (1) is connected to a connecting pipe (5) at the center of the outer wall at both ends, and a valve (6) is installed at one end of the connecting pipe (5), and a detection gas tank (10) is connected to the outer wall of the other end of the connecting pipe (5).

4. The sample testing device for the research and development of separation membranes according to claim 1, characterized in that, Both ends of the test box (1) are connected to the outer walls of the air extraction pipe (7), and the other end of the air extraction pipe (7) is connected to the outer wall of the vacuum pump (9). A valve (8) is installed on the outer wall of one end of the air extraction pipe (7).

5. The sample testing device for separation membrane research and development according to claim 1, characterized in that, The top outer wall of the detection box (1) is provided with mounting ports (11) at both ends, and an air quality sensor (12) is installed on the inner wall of the mounting port (11). A control panel (13) is installed on the top outer wall of the detection box (1), and the air quality sensor (12) is connected to the signal input terminal of the control panel (13) through a signal line.

6. The sample testing device for the research and development of separation membranes according to claim 1, characterized in that, A vent pipe (14) is provided at the center of the partition plate (4), and a solenoid valve (15) is installed at one end of the vent pipe (14).

7. The sample testing device for the research and development of separation membranes according to claim 1, characterized in that, A separation membrane body is provided between the placement groove (17) of the fixed frame (16) and the pressing frame (18).

8. The sample testing device for the research and development of separation membranes according to claim 4, characterized in that, The vacuum pump (9) and the solenoid valve (15) are connected to the control panel (13) via wires, and the control panel (13) is connected to the power supply via wires.

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