An online multi-channel measurement device for the concentration of an extraction mixture

Abstract

This utility model relates to the field of extraction mixture measurement technology, and discloses an online multi-channel measurement device for the concentration of extraction mixtures. The device includes a housing, with a control cabinet fixedly installed on the left side of the housing. This utility model directly acquires mixture samples from different extraction tanks via an input mechanism, and immediately inputs these samples into a detection mechanism for concentration measurement at a constant temperature. The samples are then discharged by an output mechanism into the corresponding extraction tank, achieving rapid online measurement of the concentration of multi-channel extraction mixtures. Analysis is performed in a detection device next to the production line, effectively managing the number of samples, reducing workload, eliminating sampling time blind spots, and ensuring more accurate test data because the detection environment is consistent with the on-site environment. Relevant data can be quickly fed back to the production department, allowing production personnel to adjust the liquid volume immediately based on accurate data with minimal time lag, significantly improving product yield.

Description

Technical Field

[0001] This utility model relates to the field of extraction mixture measurement technology, and in particular to an online multi-channel measurement device for the concentration of extraction mixture. Background Technology

[0002] Currently, the production of high-performance polyethylene fibers in China mostly employs the gelation method to produce ultra-high molecular weight polyethylene fibers. Mineral oil is typically used as the primary solvent. Before drawing, a continuous extraction process is needed to extract the mineral oil from the gel fibers. Existing extraction equipment often uses a multi-stage, multi-tank process with quantitative replenishment of fresh solution to ensure controlled oil content in the extracted gel fibers, thereby ensuring excellent tensile properties in the next process. The extraction effect directly impacts the product quality; therefore, most manufacturers consider the concentration of the mixed solution in each extraction tank a key quality control indicator.

[0003] The current mainstream measurement method is to manually sample the mixture from each extraction tank and place the samples in the laboratory for testing. This method involves a large number of samples, is labor-intensive, has time blind spots in sampling, and the test data is inaccurate due to the difference between the laboratory environment and the field environment. Furthermore, the relevant data is fed back to production, and production personnel adjust the liquid volume based on the data, which has a significant time lag and affects the product yield. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides the following technical solution: an online multi-channel measurement device for the concentration of an extraction mixture, comprising a device housing, a control cabinet fixedly installed on the left side of the device housing, and an input mechanism for conveying liquid for concentration detection fixedly installed on the right side inside the device housing;

[0005] A detection mechanism for heating the liquid and detecting its concentration is fixedly installed on the bottom inner wall of the device housing, and the detection mechanism is connected to the input mechanism;

[0006] An output mechanism for discharging liquid is fixedly installed on the left side of the rear inner wall of the device housing, and the output mechanism is connected to the detection mechanism.

[0007] As an improvement to the above technical solution, the input mechanism includes a multi-pipe liquid inlet assembly. The multi-pipe liquid inlet assembly is fixedly installed on the rear inner wall of the device housing near the right side. The rear end of the multi-pipe liquid inlet assembly penetrates through the rear side of the device housing and extends outward. A manual valve is fixedly installed at one end of the multi-pipe liquid inlet assembly extending outward from the rear side of the device housing. A diaphragm pump is fixedly installed on the bottom inner wall of the device housing near the right side. A main liquid inlet pipe is fixedly installed at the liquid inlet end of the diaphragm pump. The top end of the main liquid inlet pipe is fixedly installed with the outlet of the multi-pipe liquid inlet assembly. A compressed air solenoid valve is fixedly installed on the rear inner wall of the device housing and located on the right side of the multi-pipe liquid inlet assembly. A compressed air pipe is fixedly installed at the front end of the compressed air solenoid valve. The bottom end of the compressed air pipe is fixedly installed with the air inlet end of the diaphragm pump. A first pipe is fixedly installed at the liquid outlet end of the diaphragm pump.

[0008] As an improvement to the above technical solution, the detection mechanism includes a support frame, which is fixedly installed on the bottom inner wall of the device housing near the left side. A heat exchanger is fixedly installed on the top of the support frame, and the inlet of the heat exchanger is fixedly installed with the left end of the first pipe. A second pipe is fixedly installed with the outlet of the heat exchanger. A concentration detection module is fixedly installed on the front side of the support frame by a U-shaped clamp, and the bottom end of the second pipe is fixedly installed with the inlet of the concentration detection module.

[0009] As an improvement to the above technical solution, the output mechanism includes a multi-pipe liquid outlet assembly. The multi-pipe liquid outlet assembly is fixedly installed on the rear inner wall of the device housing near the left side. A liquid outlet main pipe is fixedly installed at the outlet end of the concentration detection module. The top end of the liquid outlet main pipe is fixedly installed with the inlet of the multi-pipe liquid outlet assembly. A constant temperature water inlet solenoid valve is fixedly installed on the rear inner wall of the device housing to the right of the multi-pipe liquid outlet assembly. A constant temperature water inlet main pipe is fixedly installed at the front end of the constant temperature water inlet solenoid valve. The bottom end of the constant temperature water inlet main pipe is fixedly installed with the water inlet end of the heat exchanger. A constant temperature water outlet pipe is fixedly installed on the rear inner wall of the device housing to the right of the constant temperature water inlet solenoid valve. A third pipe is fixedly installed at the front end of the constant temperature water outlet pipe. The bottom end of the third pipe is fixedly installed with the water outlet end of the heat exchanger.

[0010] As an improvement to the above technical solution, a concentration display module is fixedly installed on the rear inner wall of the device housing and below the compressed air solenoid valve via a cylindrical bracket.

[0011] As an improvement to the above technical solution, the multi-pipe liquid inlet assembly includes multiple liquid inlet branches and a manifold liquid inlet pipe. The multiple liquid inlet branches are linearly and evenly arranged on the rear inner wall of the device housing. Each of the multiple liquid inlet branches is equipped with a solenoid valve. The front end of each of the multiple liquid inlet branches is fixed to a manifold liquid inlet pipe. The top end of the main liquid inlet pipe is fixedly installed with the outlet of the manifold liquid inlet pipe. The multi-pipe liquid outlet assembly includes multiple liquid outlet branches and a manifold liquid outlet pipe. The multiple liquid outlet branches are linearly and evenly arranged on the rear inner wall of the device housing. Each of the multiple liquid outlet branches is equipped with a solenoid valve. The front end of each of the multiple liquid outlet branches is fixed to a manifold liquid outlet pipe. The top end of the main liquid outlet pipe is fixedly installed with the inlet of the manifold liquid outlet pipe.

[0012] The beneficial effects of this invention are as follows: Mixture samples are directly obtained from different extraction tanks via an input mechanism, and these samples are immediately input into the detection mechanism for concentration measurement at a constant temperature. The samples are then discharged into the corresponding extraction tank via an output mechanism, enabling rapid online measurement of the concentration of multi-channel extracted mixtures. Analysis is performed in a detection device located next to the production line, effectively managing the number of samples, reducing workload, eliminating sampling time blind spots, and ensuring more accurate test data because the detection environment matches the on-site environment. Relevant data can be quickly fed back to the production department, allowing production personnel to adjust the liquid volume immediately based on precise data with minimal time lag, significantly improving product yield. Attached Figure Description

[0013] Figure 1 This is a front view of the online multi-channel concentration measurement device of this utility model;

[0014] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0015] Figure 3 This is a plan view of the online multi-channel concentration measurement device of this utility model;

[0016] Figure 4 This is a flowchart of the online multi-channel concentration measurement device of this utility model.

[0017] Reference numerals in the attached diagram: 1. Device housing; 2. Control cabinet; 3. Multi-pipe liquid inlet assembly; 31. Diaphragm pump; 32. Main liquid inlet pipe; 33. Compressed air solenoid valve; 34. Compressed air pipe; 35. First pipe; 4. Support frame; 41. Heat exchanger; 42. Second pipe; 43. Concentration detection module; 5. Multi-pipe liquid outlet assembly; 51. Main liquid outlet pipe; 52. Constant temperature water inlet solenoid valve; 53. Constant temperature water inlet pipe; 54. Constant temperature water outlet pipe; 55. Third pipe; 6. Concentration display module. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0019] Reference Appendix Figure 1 ,exist Figure 1 In the diagram, 'a' points to the front view and 'b' points to the right-side view. These views are only used to understand the scheme.

[0020] Please see Figure 1-4 This utility model provides a technical solution: an online multi-channel measurement device for the concentration of an extraction mixture, including a device housing 1, a control cabinet 2 fixedly installed on the left side of the device housing 1, and an input mechanism for conveying liquid for concentration detection fixedly installed on the right side inside the device housing 1.

[0021] A detection mechanism for heating the liquid and detecting its concentration is fixedly installed on the bottom inner wall of the device housing 1. The detection mechanism is connected to the input mechanism.

[0022] An output mechanism for discharging liquid is fixedly installed on the left side of the rear inner wall of the device housing 1, and the output mechanism is connected to the detection mechanism.

[0023] In this implementation scheme, mixed liquid samples are directly obtained from different extraction tanks through the input mechanism, and these samples are immediately input into the detection mechanism for concentration measurement at a constant temperature. Then, the output mechanism discharges the samples into the corresponding extraction tank, realizing online rapid measurement of the concentration of multi-channel extracted mixed liquids.

[0024] Specifically, the input mechanism includes a multi-pipe liquid inlet assembly 3, which is fixedly installed on the rear inner wall of the device housing 1 near the right side. The rear end of the multi-pipe liquid inlet assembly 3 extends through the rear side of the device housing 1. A manual valve is fixedly installed at one end of the multi-pipe liquid inlet assembly 3 extending from the rear side of the device housing 1. A diaphragm pump 31 is fixedly installed on the bottom inner wall of the device housing 1 near the right side. A liquid inlet main pipe 32 is fixedly installed at the liquid inlet end of the diaphragm pump 31. The top end of the liquid inlet main pipe 32 is fixedly installed at the outlet of the multi-pipe liquid inlet assembly 3. A compressed air solenoid valve 33 is fixedly installed on the rear inner wall of the device housing 1 and on the right side of the multi-pipe liquid inlet assembly 3. A compressed air pipe 34 is fixedly installed at the front end of the compressed air solenoid valve 33. The bottom end of the compressed air pipe 34 is fixedly installed at the air inlet end of the diaphragm pump 31. A first pipe 35 is fixedly installed at the liquid outlet end of the diaphragm pump 31.

[0025] In this embodiment, the mixed liquids from different tanks are input into the detection mechanism through the cooperation of the internal structure of the input mechanism.

[0026] Specifically, the detection mechanism includes a support frame 4, which is fixedly installed on the bottom inner wall of the device housing 1 near the left side. A heat exchanger 41 is fixedly installed on the top of the support frame 4. The inlet of the heat exchanger 41 is fixedly installed with the left end of the first pipe 35. A second pipe 42 is fixedly installed with the outlet of the heat exchanger 41. A concentration detection module 43 is fixedly installed on the front side of the support frame 4 by a U-shaped clamp. The bottom end of the second pipe 42 is fixedly installed with the inlet of the concentration detection module 43.

[0027] In this embodiment, the mixture is heated by the cooperation of the internal structure of the detection mechanism to achieve constant temperature of the mixture. Concentration detection is then performed on the mixture at a constant temperature, reducing measurement errors caused by ambient temperature and improving the accuracy of the detection data.

[0028] Specifically, the output mechanism includes a multi-pipe liquid outlet assembly 5, which is fixedly installed on the rear inner wall of the device housing 1 near the left side. A liquid outlet main pipe 51 is fixedly installed at the liquid outlet end of the concentration detection module 43. The top end of the liquid outlet main pipe 51 is fixedly installed with the inlet of the multi-pipe liquid outlet assembly 5. A constant temperature water inlet solenoid valve 52 is fixedly installed on the rear inner wall of the device housing 1 and to the right of the multi-pipe liquid outlet assembly 5. A constant temperature water inlet main pipe 53 is fixedly installed at the front end of the constant temperature water inlet solenoid valve 52. The bottom end of the constant temperature water inlet main pipe 53 is fixedly installed with the water inlet end of the heat exchanger 41. A constant temperature water outlet pipe 54 is fixedly installed on the rear inner wall of the device housing 1 and to the right of the constant temperature water inlet solenoid valve 52. A third pipe 55 is fixedly installed at the front end of the constant temperature water outlet pipe 54. The bottom end of the third pipe 55 is fixedly installed with the water outlet end of the heat exchanger 41.

[0029] In this embodiment, the mixed liquid after detection is discharged into the original extraction tank through the cooperation of the internal structure of the output mechanism, and a water source is provided for the detection mechanism.

[0030] Specifically, a concentration display module 6 is fixedly installed on the rear inner wall of the device housing 1 and below the compressed air solenoid valve 33 via a cylindrical bracket.

[0031] In this embodiment, the concentration of the mixed solution during detection can be observed through the concentration display module 6.

[0032] Specifically, the multi-pipe liquid inlet assembly 3 includes multiple liquid inlet branch pipes and a manifold liquid inlet pipe. The multiple liquid inlet branch pipes are linearly and evenly arranged on the rear inner wall of the device housing 1. Each of the multiple liquid inlet branch pipes is equipped with a solenoid valve. The front end of the multiple liquid inlet branch pipes is fixed to a manifold liquid inlet pipe. The top end of the main liquid inlet pipe 32 is fixedly installed with the outlet of the manifold liquid inlet pipe. The multi-pipe liquid outlet assembly 5 includes multiple liquid outlet branch pipes and a manifold liquid outlet pipe. The multiple liquid outlet branch pipes are linearly and evenly arranged on the rear inner wall of the device housing 1. Each of the multiple liquid outlet branch pipes is equipped with a solenoid valve. The front end of the multiple liquid outlet branch pipes is fixed to a manifold liquid outlet pipe. The top end of the main liquid outlet pipe 51 is fixedly installed with the inlet of the manifold liquid outlet pipe.

[0033] In this embodiment, online measurement of the concentration of the multi-channel extraction mixture was achieved through integrated design.

[0034] This device provides an electrical control system that uses a PLC program to control the opening and closing of each solenoid valve, achieving the required automatic online detection function. Explosion-proof electrical components are selected, enabling operation in explosion-proof environments. The electrical control system can be connected to touch screens, configuration files, and other upper-level devices to enable online setting of device start / stop, test cycles, and alarm thresholds.

[0035] When the device is started, the compressed air solenoid valve 33 opens, and the diaphragm pump 31 starts working under the drive of compressed air. The electrical control system drives the solenoid valves on the inlet branch pipe in the multi-pipe liquid inlet assembly 3 and the outlet branch pipe in the multi-pipe liquid outlet assembly 5 to open. The mixture in the extraction tank No. 1 is sucked into the manifold inlet pipe through the No. 1 inlet branch pipe and enters the diaphragm pump 31 through the manifold inlet pipe. The mixture enters the heat exchanger 41 through the first pipe 35 after the diaphragm pump 31 for heat exchange. After heat exchange, the mixture exits the heat exchanger 41 and enters the concentration detection module 43 through the second pipe 42 for concentration testing. After the concentration test, the mixture enters the manifold outlet pipe through the outlet main pipe 51 and enters the corresponding No. 1 outlet branch pipe, and finally returns to the extraction tank No. 1, realizing the measurement of the concentration of the mixture in the No. 1 tank. The control system can set the measurement time of the concentration of each extraction tank to achieve stable and accurate concentration measurement.

[0036] When the measurement time reaches the set value, the control system drives the solenoid valves on the No. 1 inlet branch pipe in the manifold inlet pipe and the No. 1 outlet branch pipe in the manifold outlet pipe to close, and the solenoid valves on the corresponding No. 2 inlet branch pipe and No. 2 outlet branch pipe to open. The above actions are repeated. Through integrated design, online measurement of the concentration of multi-channel extraction mixture is realized.

[0037] When the device is started, the constant temperature water inlet solenoid valve 52 is opened, and the constant temperature water flows into the heat exchanger 41, achieving reverse non-contact heat exchange with the extraction mixture flowing into the heat exchanger 41. This enables the extraction mixture to be detected at the same temperature. The constant temperature water is provided by an external constant temperature water source, and the temperature is set according to the detection requirements. The addition of the heat exchanger 41 enables the measurement of the concentration of the mixture at the same temperature, reducing the measurement error caused by the ambient temperature. The on / off of each channel is controlled by the solenoid valves on each inlet and outlet pipe, enabling a single concentration detection module 43 to measure multiple samples.

[0038] After the concentration detection module 43 outputs the concentration of each tank, it can compare it with the set value and use a PID algorithm to feed back to the regulating valve of each extraction tank to realize closed-loop control of the concentration of the extraction tank. It can also be viewed through the concentration display module 6. At the same time, it provides various control interfaces. By setting the target value, it can feed back to the input mechanism to realize closed-loop control.

[0039] In addition to being suitable for multi-channel measurement of extraction concentration, the device is equally applicable to other liquid phase parameters (such as density, refractive index, viscosity, sugar content, etc.), which can be achieved simply by replacing the concentration detection module 43.

[0040] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An on-line multi-channel measuring device for concentration of extraction mixture, comprising a device housing (1), characterized in that: A control cabinet (2) is fixedly installed on the left side of the device housing (1), and an input mechanism for conveying liquid for concentration detection is fixedly installed on the right side inside the device housing (1). A detection mechanism for heating the liquid and detecting its concentration is fixedly installed on the bottom inner wall of the device housing (1), and the detection mechanism is connected to the input mechanism; An output mechanism for discharging liquid is fixedly installed on the left side of the rear inner wall of the device housing (1), and the output mechanism is connected to the detection mechanism.

2. The on-line multi-channel measuring device for concentration of extraction mixture according to claim 1, characterized in that: The inlet mechanism includes a multi-pipe inlet assembly (3), which is fixedly installed on the rear inner wall of the device housing (1) near the right side. The rear end of the multi-pipe inlet assembly (3) extends through the rear side of the device housing (1). A manual valve is fixedly installed at one end of the multi-pipe inlet assembly (3) extending out of the rear side of the device housing (1). A diaphragm pump (31) is fixedly installed on the bottom inner wall of the device housing (1) near the right side. An inlet valve is fixedly installed at the inlet end of the diaphragm pump (31). The liquid inlet pipe (32) is fixedly installed at the top end of the liquid inlet pipe (3) and the outlet of the multi-pipe liquid inlet assembly (3). A compressed air solenoid valve (33) is fixedly installed on the rear inner wall of the device housing (1) and on the right side of the multi-pipe liquid inlet assembly (3). A compressed air pipe (34) is fixedly installed at the front end of the compressed air solenoid valve (33). The bottom end of the compressed air pipe (34) is fixedly installed at the air inlet end of the diaphragm pump (31). A first pipe (35) is fixedly installed at the liquid outlet end of the diaphragm pump (31).

3. The on-line multi-channel measuring device for concentration of extraction mixture according to claim 2, characterized in that: The detection mechanism includes a support frame (4), which is fixedly installed on the bottom inner wall of the device housing (1) near the left side. A heat exchanger (41) is fixedly installed on the top of the support frame (4). The inlet of the heat exchanger (41) is fixedly installed with the left end of the first pipe (35). A second pipe (42) is fixedly installed with the outlet of the heat exchanger (41). A concentration detection module (43) is fixedly installed on the front side of the support frame (4) by a U-shaped clamp. The bottom end of the second pipe (42) is fixedly installed with the inlet of the concentration detection module (43).

4. The on-line multi-channel measuring device for concentration of extraction mixture according to claim 3, characterized in that: The output mechanism includes a multi-pipe liquid outlet assembly (5), which is fixedly installed on the rear inner wall of the device housing (1) near the left side. A liquid outlet main pipe (51) is fixedly installed at the outlet end of the concentration detection module (43). The top of the liquid outlet main pipe (51) is fixedly installed at the inlet of the multi-pipe liquid outlet assembly (5). A constant temperature water inlet solenoid valve (52) is fixedly installed on the rear inner wall of the device housing (1) and on the right side of the multi-pipe liquid outlet assembly (5). A constant temperature water inlet solenoid valve (52) is fixedly installed with a constant temperature water inlet main pipe (53) at its front end. The bottom end of the constant temperature water inlet main pipe (53) is fixedly installed with the water inlet end of the heat exchanger (41). A constant temperature water outlet pipe (54) is fixedly installed on the rear inner wall of the device housing (1) and on the right side of the constant temperature water inlet solenoid valve (52). A third pipe (55) is fixedly installed at the front end of the constant temperature water outlet pipe (54). The bottom end of the third pipe (55) is fixedly installed with the water outlet end of the heat exchanger (41).

5. The on-line multi-channel measuring device for concentration of extraction mixture according to claim 2, characterized in that: A concentration display module (6) is fixedly installed on the rear inner wall of the device housing (1) and below the compressed air solenoid valve (33) via a cylindrical bracket.

6. The online multi-channel measurement device for the concentration of an extraction mixture according to claim 4, characterized in that: The multi-pipe liquid inlet assembly (3) includes multiple liquid inlet branches and a manifold liquid inlet pipe. The multiple liquid inlet branches are linearly and uniformly arranged on the rear inner wall of the device housing (1). Each of the multiple liquid inlet branches is equipped with an electromagnetic valve. The front end of the multiple liquid inlet branches is fixed with a manifold liquid inlet pipe. The top end of the main liquid inlet pipe (32) is fixedly installed with the outlet of the manifold liquid inlet pipe. The multi-pipe liquid outlet assembly (5) includes multiple liquid outlet branches and a manifold liquid outlet pipe. The multiple liquid outlet branches are linearly and uniformly arranged on the rear inner wall of the device housing (1). Each of the multiple liquid outlet branches is equipped with an electromagnetic valve. The front end of the multiple liquid outlet branches is fixed with a manifold liquid outlet pipe. The top end of the main liquid outlet pipe (51) is fixedly installed with the inlet of the manifold liquid outlet pipe.

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