Chloroacetic acid specific gravity testing device and testing method

Abstract

The present application relates to the technical field of detection device, specifically to a chloroacetic acid specific gravity testing device and testing method, which comprises a rack, the inner wall of the rack is fixedly installed with an inner cylinder arranged vertically, the inside of the inner cylinder is sequentially provided with a sample storage cavity, a liquid distribution cavity, a liquid storage cavity and a waste discharge cavity from top to bottom, the inside of the liquid storage cavity is installed with a liquid feeding module, the circumferential surface of the inner cylinder is fixedly installed with a group of testing mechanisms arranged in a circumferential array, the circumferential surface of the inner cylinder and the position above the testing mechanisms are slidingly connected with a lifting ring, the upper part of the inner cylinder is fixedly installed with a vertical screw rod driving module, and the circumferential surface of the screw rod driving module is drivingly connected with the lifting ring. The present application has the beneficial effect that the single-station monitoring structure of the traditional specific gravity testing device is changed into a multi-station detection structure through the arrangement of multiple testing mechanisms, and multiple testing mechanisms can simultaneously perform specific gravity detection of the same testing liquid in the same detection mode during work.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, specifically to a chloroacetic acid specific gravity testing device and testing method. Background Technology

[0002] Chloroacetic acid is an important organic chemical intermediate widely used in the production of pesticides, pharmaceuticals, and daily chemical products. my country's annual demand for chloroacetic acid exceeds 300,000 tons. In the sulfur catalytic process for producing chloroacetic acid, a mixture of chloroacetic acid and mother liquor is first obtained. This mixture is then introduced into a crystallization kettle for condensation. The condensed crystals are directly sent to a vacuum filtration box for vacuum filtration. The mother liquor is extracted, while solid chloroacetic acid remains in the filtration box. During the chloroacetic acid processing, a hydrometer is needed to detect the concentration and specific gravity of chloroacetic acid. Various specific gravity detection devices have emerged in the existing technology. For example, patent document CN215985618U discloses a weighing-type mud hydrometer, which includes a meter head component with a built-in weighing sensor. The top of the meter head component is connected to a meter head handle. The lower part has a through hole, through which a suspension rope component connected to the lower part of the weighing sensor passes and connects to the probe. The meter head component also has an internal module group connected to the weighing sensor. As long as the probe of the weighing mud specific gravity meter is placed into the mud to be tested, the specific gravity of the mud can be displayed. However, the above device can only perform single-station testing when performing specific gravity testing, which leads to the non-representative nature of the detection effect. On the other hand, the existing detection device cannot guarantee the uniformity of the concentration of the tested substance, which makes it difficult to guarantee the detection accuracy of the detection device. Based on this, the present invention provides a chloroacetic acid specific gravity testing device and testing method to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a chloroacetic acid specific gravity testing device and testing method. This solves the problems that existing testing devices can only perform single-station testing, which leads to the non-representative nature of the testing results. On the other hand, existing testing devices cannot guarantee the concentration uniformity of the tested substances, which makes it difficult to guarantee the accuracy of the testing devices.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a chloroacetic acid specific gravity testing device includes a frame, an inner cylinder fixedly installed on the inner wall of the frame, and a sample storage chamber, a liquid distribution chamber, a liquid storage chamber and a waste discharge chamber that are isolated from each other from top to bottom inside the inner cylinder. A liquid delivery module is installed inside the liquid storage chamber. A set of testing mechanisms arranged in a circular array is fixedly installed on the circumferential side of the inner cylinder. A lifting ring is slidably connected to the circumferential side of the inner cylinder and at the position above the testing mechanism. A vertically arranged lead screw drive module is fixedly installed on the upper part of the inner cylinder. The circumferential side of the lead screw drive module is connected to the lifting ring. An electrical testing module is installed on the bottom surface of the lifting ring and at the position corresponding to each testing mechanism. A transmission cylinder is rotatably connected to the lower part of the inner cylinder. A servo motor is fixedly installed on the surface of the frame. The output shaft end of the servo motor is connected to the transmission cylinder. A transmission gear ring a and a transmission gear ring b that cooperate with the testing mechanism are fixedly installed on the circumferential side of the transmission cylinder.

[0005] The beneficial effects of this invention are:

[0006] 1) By setting up multiple testing mechanisms, the traditional single-station monitoring structure of the specific gravity testing device is transformed into a multi-station testing structure. During operation, multiple testing mechanisms can simultaneously perform specific gravity testing of the same test liquid using the same testing method. The realization of the multi-station testing structure can effectively improve the testing efficiency of this device on the one hand, and effectively improve the testing accuracy and the tolerance of the test results on the other hand.

[0007] 2) In this invention, after the chloroacetic acid test solution is introduced, the probe returns to its initial height. After the probe returns to its initial height, the servo motor outputs a rotational speed. Once the servo motor outputs the rotational speed, it drives the outer stirring sleeve and the inner stirring shaft to move coaxially and differentially. After the inner stirring shaft operates, it drives the stirring rod to stir the chloroacetic acid test solution. Stirring improves the concentration uniformity of the chloroacetic acid test solution, thereby helping to improve the detection accuracy of this device in detecting the specific gravity of chloroacetic acid. When the probe sinks into the chloroacetic acid test solution, the servo motor stops working. After the probe has finished monitoring, the probe restarts... After resetting to the initial height and the probe is reset, the servo motor starts and drives the spiral scraper to rotate. When the spiral scraper rotates, the solenoid valve b of the waste discharge cylinder opens, and the scraping direction of the spiral scraper is towards the waste outlet of the waste discharge cylinder, thereby effectively reducing the residual rate of chloroacetic acid test solution inside the test cylinder. When the chloroacetic acid test solution is discharged, the liquid distribution chamber continuously sends clean water into the chloroacetic acid test solution, thereby achieving a certain cleaning effect on the inner wall of the test cylinder. Through the realization of the above technical effects, the multifunctionality and ease of maintenance of this device are effectively improved.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the testing mechanism includes an inlet cylinder and a waste outlet cylinder, with a test rotary cylinder rotatably connected between the opposing surfaces of the inlet cylinder and the waste outlet cylinder. A main inlet pipe is fixedly connected to the surface of the inlet cylinder, and the other end of the main inlet pipe is fixedly connected to the liquid distribution chamber. A sample inlet branch pipe is fixedly connected to the circumferential side of the main inlet pipe, and the other end of the sample inlet branch pipe is fixedly connected to the sample storage chamber. One end of the waste outlet of the waste outlet cylinder is fixedly connected to the waste outlet chamber. A stirring module is installed at the axial position of the waste outlet cylinder, and the test rotary cylinder is driven by the stirring module.

[0010] Furthermore, both the main inlet pipe and the sample inlet branch pipe are equipped with solenoid valve a and a flow meter, and a solenoid valve b is fixedly installed at the connection between the waste discharge cylinder and the waste discharge chamber.

[0011] The beneficial effects of adopting the above-mentioned further scheme are that the test cylinder is a hollow cylindrical structure with openings at both ends, the liquid inlet cylinder is used for the feeding of chloroacetic acid test solution or water, the stirring module is used for stirring the chloroacetic acid test solution fed into the liquid inlet cylinder, and the flow meter is used to monitor the total amount of liquid fed into the main liquid inlet pipe and the sample inlet branch pipe.

[0012] Furthermore, the stirring module includes an outer stirring sleeve, a differential shaft a, and a differential shaft b, all rotatably connected to the waste discharge cylinder. The circumferential side of the outer stirring sleeve is rotatably connected to the waste discharge cylinder, and an inner stirring shaft is rotatably connected to the inner wall of the outer stirring sleeve. A driven gear a, meshing with a transmission gear ring a, is fixedly installed at the bottom end of the inner stirring shaft. Linkage gears a are fixedly installed at the bottom ends of both differential shaft a and differential shaft b. A driven gear b is fixedly installed on the circumferential side of the outer stirring sleeve, and the circumferential sides of both linkage gears a mesh with the driven gear b. The circumferential side of the linkage gear a at the differential shaft b is drivingly connected to the transmission gear ring b. A transmission frame is installed on the circumferential side of the outer stirring sleeve, corresponding to the position inside the test cylinder. A spiral stirring blade that rotates and fits against the test cylinder is fixedly installed on the surface of the transmission frame. A set of stirring rods arranged in a circumferential array is fixedly installed on the circumferential side of the inner stirring shaft. A linkage gear b is fixedly installed at the top end of the differential shaft a, and a differential gear ring meshing with the linkage gear b is fixedly installed at the bottom of the test cylinder.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that after the chloroacetic acid test solution is fed in, the probe returns to its initial height. After the probe returns to its initial height, the servo motor outputs a rotational speed. When the servo motor outputs a rotational speed, it drives the outer stirring sleeve and the inner stirring shaft to move coaxially and differentially. After the inner stirring shaft works, it drives the stirring rod to stir the chloroacetic acid test solution. Stirring improves the concentration uniformity of the chloroacetic acid test solution, thereby helping to improve the detection accuracy of this device in the specific gravity detection of chloroacetic acid. When the probe sinks into the chloroacetic acid test solution, the servo motor... When the servo motor stops working, and the probe finishes monitoring, it resets to its initial height. After the probe resets, the servo motor starts running and drives the spiral scraper to rotate. When the spiral scraper rotates, the solenoid valve b of the waste discharge cylinder opens, and the scraping direction of the spiral scraper is towards the waste outlet of the waste discharge cylinder, thereby effectively reducing the residual rate of chloroacetic acid test solution inside the test cylinder. When the chloroacetic acid test solution is discharged, the liquid distribution chamber continuously sends clean water into the chloroacetic acid test solution, which then has a certain cleaning effect on the inner wall of the test cylinder.

[0014] Furthermore, the electrical measurement module includes an electrical measurement cylinder that is vertically arranged and fixedly connected to the liquid inlet cylinder, and a tension sensor that is vertically arranged and fixedly connected to the lifting ring. A suspension rope is fixedly connected to the port of the tension sensor, and a probe is fixedly installed at the bottom end of the suspension rope. The probe is located inside the electrical measurement cylinder, and a vertically arranged liquid level sensor is fixedly installed inside the liquid inlet cylinder.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, during use, by setting the liquid level sensor, the height of the water and chloroacetic acid test solution can be above the probe during testing, and the descent stroke of the lifting ring is a fixed value each time during operation.

[0016] Furthermore, the liquid delivery module includes a replenishment pipe installed on the circumferential side of the inner cylinder and fixedly connected to the liquid storage cavity, and a pump body installed on the top of the liquid storage cavity. One end of the pump body's outlet is fixedly connected to the liquid distribution cavity, and one end of the pump body's inlet is fixedly connected to a suction pipe.

[0017] Furthermore, a microcontroller that is electrically connected to a tension sensor, a liquid level sensor, solenoid valve a, solenoid valve b, and a flow meter is fixedly mounted on the surface of the frame. A display screen is fixedly mounted on the surface of the microcontroller, and a sample replenishment tube that communicates with the sample storage chamber is fixedly mounted on the top of the inner cylinder.

[0018] Furthermore, both the test cylinder and the inner cylinder are made of transparent material, and a waste discharge pipe that is rotatably connected to the waste discharge chamber is fixedly installed on the bottom surface of the frame, with a valve fixedly installed inside the waste discharge pipe.

[0019] Furthermore, the testing method for the chloroacetic acid specific gravity testing device includes the following steps:

[0020] SS001. Before testing, store sufficient chloroacetic acid test solution in the sample storage chamber and sufficient clean water in the liquid storage chamber. Before testing, reset the lifting ring to its initial maximum height and connect the waste outlet pipe to the external waste discharge pipe.

[0021] After steps SS002 and SS001, the monitored values ​​of the tension sensor and the liquid level sensor are zeroed.

[0022] SS003. During testing, under the driving action of the liquid delivery module, a certain amount of clean water is delivered into the test cylinder. The lead screw drive module drives the lifting ring to place the probe into the test cylinder containing clean water. After the probe has been fully displaced, the clean water in the test cylinder should overflow the probe. When the clean water in the test cylinder overflows the probe, the calibration program in the microcontroller completes the initial reference value calibration.

[0023] SS004. After the initial reference value is calibrated, the solenoid valve b in the waste discharge cylinder is opened, and the water in the test cylinder is drained. After the water is drained, the probe is reset to the initial height under the action of the lifting ring. After the reset is completed, the sample storage chamber quantitatively feeds chloroacetic acid test solution into the test cylinder. After the chloroacetic acid test solution is fed in, the liquid level of the test solution should be ensured to cover the probe. When the test solution covers the probe at this time, the servo motor works and drives the stirring module to stir the chloroacetic acid test solution. After the stirring module stirs the chloroacetic acid test solution for a specified time, the servo motor is turned off, and the chloroacetic acid test solution is allowed to stand. After the chloroacetic acid test solution has been left to stand for a specified time, the microcontroller receives data feedback from the tensile sensor and calibrates the tensile sensor value after standing as the real-time feedback value. At this time, the microcontroller calculates the initial reference value and the real-time feedback value of the tensile sensor, and then uses the formula to calculate the specific gravity data of chloroacetic acid in the chloroacetic acid test solution. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the chloroacetic acid specific gravity testing device of the present invention;

[0025] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0026] Figure 3 This is a cross-sectional structural diagram of the inner cylinder, tension sensor, and waste discharge chamber of the present invention;

[0027] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structure at point B;

[0028] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at point C in the middle;

[0029] Figure 6 This is a schematic diagram of the lifting ring, the electrical measuring cylinder, and the lifting ring of the present invention;

[0030] Figure 7 This is a cross-sectional structural diagram of the liquid inlet cylinder and waste outlet cylinder of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Frame; 2. Inner cylinder; 3. Sample storage chamber; 4. Liquid distribution chamber; 5. Liquid storage chamber; 6. Waste discharge chamber; 7. Liquid delivery module; 8. Lifting ring; 9. Screw drive module; 10. Transmission cylinder; 11. Servo motor; 12. Transmission gear ring a; 13. Transmission gear ring b; 14. Liquid inlet cylinder; 15. Waste discharge cylinder; 16. Test cylinder; 17. Main liquid inlet pipe; 18. Sample inlet branch pipe; 19. Outer stirring sleeve; 20. 21. Differential shaft a; 22. Differential shaft b; 23. Internal agitator shaft; 24. Driven gear a; 25. Linkage gear a; 26. Driven gear b; 27. Transmission frame; 28. Spiral agitator blade; 29. ​​Agitator rod; 30. Linkage gear b; 31. Differential gear ring; 32. Electrical measuring cylinder; 33. Tension sensor; 34. Suspension rope; 35. Probe; 36. Liquid level sensor; 37. Microcontroller; 38. Waste outlet pipe. Detailed Implementation

[0033] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0034] The present invention provides the following preferred embodiments.

[0035] like Figure 1-7 As shown, the chloroacetic acid specific gravity testing device includes a frame 1. A vertically arranged inner cylinder 2 is fixedly installed on the inner wall of the frame 1. The inner cylinder 2 has a sample storage chamber 3, a liquid distribution chamber 4, a liquid storage chamber 5 and a waste discharge chamber 6 that are isolated from each other from top to bottom. A liquid delivery module 7 is installed inside the liquid storage chamber 5.

[0036] A waste discharge pipe 37, which is rotatably connected to the waste discharge chamber 6, is fixedly installed on the bottom surface of the frame 1. A valve is fixedly installed inside the waste discharge pipe 37.

[0037] A sample replenishment tube communicating with the sample storage chamber 3 is fixedly installed on the top of the inner cylinder 2;

[0038] The liquid delivery module 7 includes a replenishment pipe installed on the side of the inner cylinder 2 and fixedly connected to the liquid storage chamber 5, and a pump body installed at the top of the liquid storage chamber 5. One end of the pump body outlet is fixedly connected to the liquid distribution chamber 4, and one end of the pump body inlet is fixedly connected to the suction pipe.

[0039] A set of test mechanisms arranged in a circular array are fixedly installed on the circumferential side of the inner cylinder 2. A lifting ring 8 is slidably connected to the circumferential side of the inner cylinder 2 and the position above the test mechanism. A vertically arranged screw drive module 9 is fixedly installed on the upper part of the inner cylinder 2. The circumferential side of the screw drive module 9 is connected to the lifting ring 8 for transmission.

[0040] The lead screw drive module 9 includes a motor and a transmission lead screw, with the output shaft of the motor fixedly connected to the transmission lead screw;

[0041] An electrical testing module is installed on the bottom surface of the lifting ring 8 and at the position corresponding to each testing mechanism. The lower part of the inner cylinder 2 is rotatably connected to the transmission cylinder 10. A servo motor 11 is fixedly installed on the surface of the frame 1. The output shaft end of the servo motor 11 is connected to the transmission cylinder 10. The circumferential side of the transmission cylinder 10 is fixedly installed with a transmission gear ring a12 and a transmission gear ring b13 that cooperate with the testing mechanism.

[0042] The testing mechanism includes an inlet cylinder 14 and a waste discharge cylinder 15. A test cylinder 16 is rotatably connected between the relative surfaces of the inlet cylinder 14 and the waste discharge cylinder 15. Both the test cylinder 16 and the inner cylinder 2 are made of transparent material. An inlet manifold 17 is fixedly connected to the surface of the inlet cylinder 14. The other end of the inlet manifold 17 is fixedly connected to the liquid distribution chamber 4. A sample inlet branch pipe 18 is fixedly connected to the circumferential side of the inlet manifold 17. The other end of the sample inlet branch pipe 18 is fixedly connected to the sample storage chamber 3. One end of the waste outlet of the waste discharge cylinder 15 is fixedly connected to the waste discharge chamber 6. A stirring module is installed at the axial position of the waste discharge cylinder 15. The test cylinder 16 is driven by the stirring module.

[0043] Solenoid valve a and flow meter are installed inside both the liquid inlet main pipe 17 and the sample inlet branch pipe 18. Solenoid valve b is fixedly installed at the connection between the waste discharge cylinder 15 and the waste discharge chamber 6.

[0044] The test cylinder 16 is a hollow cylindrical structure with openings at both ends. The inlet cylinder 14 is used to feed chloroacetic acid test solution or water. The stirring module is used to stir the chloroacetic acid test solution fed into the inlet cylinder 14. The flow meter is used to monitor the total amount of liquid fed into the main inlet pipe 17 and the sample inlet branch pipe 18.

[0045] The mixing module includes an outer mixing sleeve 19, a differential shaft a20, and a differential shaft b21, all rotatably connected to the waste discharge cylinder 15. The circumferential side of the outer mixing sleeve 19 is rotatably connected to the waste discharge cylinder 15. An inner mixing shaft 22 is rotatably connected to the inner wall of the outer mixing sleeve 19. A driven gear a23, meshing with a transmission gear ring a12, is fixedly installed at the bottom end of the inner mixing shaft 22. Linkage gears a24 are fixedly installed at the bottom ends of both the differential shaft a20 and the differential shaft b21. A driven gear b25 is fixedly installed on the circumferential side of the outer mixing sleeve 19. The circumferential sides of both linkage gears a24 mesh with the driven gears b25. 5. The peripheral side of the linkage gear a24 at the differential shaft b21 is connected to the transmission gear ring b13. The peripheral side of the outer stirring sleeve 19 and the position corresponding to the inside of the test cylinder 16 are equipped with a transmission frame 26. The surface of the transmission frame 26 is fixedly installed with a spiral stirring blade 27 that rotates and fits with the test cylinder 16. The peripheral side of the inner stirring shaft 22 is fixedly installed with a set of stirring rods 28 arranged in a circular array. The top of the differential shaft a20 is fixedly installed with a linkage gear b29. The bottom of the test cylinder 16 is fixedly installed with a differential gear ring 30 that meshes with the linkage gear b29.

[0046] After the chloroacetic acid test solution is introduced, probe 34 returns to its initial height. Once probe 34 has returned to its initial height, servo motor 11 outputs its rotational speed. This rotational speed then drives the outer stirring sleeve 19 and the inner stirring shaft 22 to move coaxially and differentially. After the inner stirring shaft 22 operates, it drives the stirring rod 28 to stir the chloroacetic acid test solution. This stirring improves the concentration uniformity of the chloroacetic acid test solution, thereby enhancing the accuracy of the device in detecting the specific gravity of chloroacetic acid. When probe 34 is submerged in the chloroacetic acid test solution, servo motor 11 stops operating. After the head 34 finishes monitoring, the probe 34 returns to its initial height. After the probe 34 returns to its initial height, the servo motor 11 starts and drives the spiral scraper 27 to rotate. When the spiral scraper 27 rotates, the solenoid valve b of the waste discharge cylinder 15 opens, and after the spiral scraper 27 rotates, its scraping direction is towards the waste outlet of the waste discharge cylinder 15, thereby effectively reducing the residual rate of chloroacetic acid test solution inside the test cylinder 16. When the chloroacetic acid test solution is discharged, the liquid distribution chamber 4 continuously sends clean water into the chloroacetic acid test solution, thereby achieving a certain cleaning effect on the inner wall of the test cylinder 16.

[0047] The electrical measurement module includes an electrical measurement cylinder 31 that is vertically set and fixedly connected to the liquid inlet cylinder 14, and a tension sensor 32 that is vertically set and fixedly connected to the lifting ring 8. A suspension rope 33 is fixedly connected to the port of the tension sensor 32, and a probe 34 is fixedly installed at the bottom end of the suspension rope 33. The probe 34 is located inside the electrical measurement cylinder 31. A vertically set liquid level sensor 35 is fixedly installed inside the liquid inlet cylinder 14.

[0048] In use, the liquid level sensor 35 is set so that the height of the water and chloroacetic acid test solution can cover the probe 34 during testing. During operation, the descent stroke of the lifting ring 8 is a fixed value each time.

[0049] A microcontroller 36, which is electrically connected to the tension sensor 32, the liquid level sensor 35, the solenoid valve a, the solenoid valve b and the flow meter, is fixedly mounted on the surface of the frame 1. A display screen is fixedly mounted on the surface of the microcontroller 36.

[0050] The test method for the chloroacetic acid specific gravity test device includes the following steps:

[0051] SS001. Before the test, the sample storage chamber 3 is filled with a sufficient amount of chloroacetic acid test solution, and the liquid storage chamber 5 is filled with a sufficient amount of clean water. Before the test, the lifting ring 8 is reset to its initial maximum height, and the waste outlet pipe 37 is connected to the external waste discharge cylinder 15.

[0052] After steps SS002 and SS001, the monitored values ​​of the tension sensor 32 and the liquid level sensor 35 are zeroed.

[0053] SS003. During testing, under the driving action of the liquid delivery module 7, a certain amount of clean water is delivered into the test cylinder 16. The lead screw drive module 9 drives the lifting ring 8 to place the probe 34 into the test cylinder 16 containing clean water. After the probe 34 has been fully displaced, the clean water in the test cylinder 16 should overflow the probe 34. When the clean water in the test cylinder 16 overflows the probe 34, the calibration program in the microcontroller 36 completes the initial reference value calibration.

[0054] After the initial reference value is calibrated (SS004), the solenoid valve b in the waste discharge cylinder 15 is opened, and the water in the test cylinder 16 is drained. After the water is drained, the probe 34 is reset to the initial height under the action of the lifting ring 8. After the reset is completed, the sample storage chamber 3 quantitatively feeds chloroacetic acid test solution into the test cylinder 16. After the chloroacetic acid test solution is fed in, the liquid level of the test solution should be ensured to cover the probe 34. When the test solution covers the probe 34 at this time, the servo motor 11 works and drives the stirring module to stir the chloroacetic acid test solution. After the stirring module stirs the chloroacetic acid test solution for a specified time, the servo motor 11 is turned off, and the chloroacetic acid test solution is allowed to stand. After the chloroacetic acid test solution has been allowed to stand for a specified time, the microcontroller 36 receives data feedback from the tension sensor 32 and calibrates the value of the tension sensor 32 after standing as the real-time feedback value. At this time, the microcontroller 36 calculates the initial reference value and the real-time feedback value of the tension sensor 32, and then uses the formula to calculate the specific gravity data of chloroacetic acid in the chloroacetic acid test solution.

[0055] In summary, the beneficial effects of this invention are specifically reflected in the following aspects:

[0056] By setting up multiple testing mechanisms, the traditional single-station monitoring structure of the specific gravity testing device is transformed into a multi-station testing structure. During operation, multiple testing mechanisms can simultaneously perform specific gravity testing of the same test liquid using the same testing method. The implementation of the multi-station testing structure can effectively improve the testing efficiency of the device, as well as the testing accuracy and the tolerance of the test results.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chloroacetic acid specific gravity testing device, characterized in that, The device includes a frame (1), on which a vertically arranged inner cylinder (2) is fixedly installed. The inner cylinder (2) is characterized by having, from top to bottom, mutually isolated sample storage chamber (3), liquid distribution chamber (4), liquid storage chamber (5), and waste discharge chamber (6). A liquid delivery module (7) is installed inside the liquid storage chamber (5). A set of test mechanisms arranged in a circular array is fixedly installed on the circumferential side of the inner cylinder (2). A lifting ring (8) is slidably connected to the circumferential side of the inner cylinder (2) at a position corresponding to the position above the test mechanisms. A vertically arranged inner cylinder (2) is fixedly installed on the upper part of the inner cylinder (2). The screw drive module (9) is configured, and the peripheral side of the screw drive module (9) is connected to the lifting ring (8) for transmission. The bottom surface of the lifting ring (8) and the position corresponding to each test mechanism are equipped with an electrical test module. The lower part of the inner cylinder (2) is rotatably connected to the transmission cylinder (10). The surface of the frame (1) is fixedly installed with a servo motor (11). The output shaft end of the servo motor (11) is connected to the transmission cylinder (10) for transmission. The peripheral side of the transmission cylinder (10) is fixedly installed with a transmission gear ring a (12) and a transmission gear ring b (13) that cooperate with the test mechanism. The testing mechanism includes an inlet cylinder (14) and a waste discharge cylinder (15). A test rotary cylinder (16) is rotatably connected between the relative surfaces of the inlet cylinder (14) and the waste discharge cylinder (15). An inlet manifold (17) is fixedly connected to the surface of the inlet cylinder (14). The other end of the inlet manifold (17) is fixedly connected to the liquid distribution chamber (4). An inlet branch pipe (18) is fixedly connected to the circumferential side of the inlet manifold (17). The other end of the inlet branch pipe (18) is fixedly connected to the sample storage chamber (3). One end of the waste outlet of the waste discharge cylinder (15) is fixedly connected to the waste discharge chamber (6). A stirring module is installed at the axial position of the waste discharge cylinder (15). The test rotary cylinder (16) is driven by the stirring module. The liquid delivery module (7) includes a replenishment pipe installed on the circumferential side of the inner cylinder (2) and fixedly connected to the liquid storage chamber (5), and a pump body installed on the top of the liquid storage chamber (5). One end of the pump body outlet is fixedly connected to the liquid distribution chamber (4), and one end of the pump body inlet is fixedly connected to a suction pipe.

2. The chloroacetic acid specific gravity testing device according to claim 1, characterized in that, Solenoid valve a and flow meter are installed inside the main inlet pipe (17) and the sample inlet branch pipe (18), and solenoid valve b is fixedly installed at the connection between the waste discharge cylinder (15) and the waste discharge chamber (6).

3. The chloroacetic acid specific gravity testing device according to claim 2, characterized in that, The stirring module includes an outer stirring sleeve (19) rotatably connected to the waste discharge cylinder (15), a differential shaft a (20), and a differential shaft b (21). The peripheral side of the outer stirring sleeve (19) is rotatably connected to the waste discharge cylinder (15), and an inner stirring shaft (22) is rotatably connected to the inner wall of the outer stirring sleeve (19). A driven gear a (23) meshing with a transmission gear ring a (12) is fixedly installed at the bottom end of the inner stirring shaft (22). A linkage gear a (24) is fixedly installed at the bottom ends of both the differential shaft a (20) and the differential shaft b (21). A driven gear b (25) is fixedly installed on the peripheral side of the outer stirring sleeve (19). The peripheral sides of both linkage gears a (24) are meshed with the driven gear b (25). 25) Meshing, the peripheral side of the linkage gear a (24) at the differential shaft b (21) is connected to the transmission gear ring b (13) for transmission. The peripheral side of the outer stirring sleeve (19) and the position corresponding to the inside of the test cylinder (16) are equipped with a transmission frame (26). The surface of the transmission frame (26) is fixedly equipped with a spiral stirring scraper (27) that rotates and fits with the test cylinder (16). The peripheral side of the inner stirring shaft (22) is fixedly equipped with a set of stirring rods (28) arranged in a circular array. The top of the differential shaft a (20) is fixedly equipped with a linkage gear b (29). The bottom of the test cylinder (16) is fixedly equipped with a differential gear ring (30) that meshes with the linkage gear b (29).

4. The chloroacetic acid specific gravity testing device according to claim 3, characterized in that, The electrical measurement module includes an electrical measurement cylinder (31) that is vertically set and fixedly connected to the liquid inlet cylinder (14), and a tension sensor (32) that is vertically set and fixedly connected to the lifting ring (8). A suspension rope (33) is fixedly connected to the port of the tension sensor (32), and a probe (34) is fixedly installed at the bottom end of the suspension rope (33). The probe (34) is located inside the electrical measurement cylinder (31), and a vertically set liquid level sensor (35) is fixedly installed inside the liquid inlet cylinder (14).

5. The chloroacetic acid specific gravity testing device according to claim 1, characterized in that, The frame (1) is fixedly mounted with a microcontroller (36) that is electrically connected to the tension sensor (32), the liquid level sensor (35), the solenoid valve a, the solenoid valve b and the flow meter. The microcontroller (36) is fixedly mounted with a display screen. The top of the inner cylinder (2) is fixedly mounted with a sample replenishment tube that communicates with the sample storage chamber (3).

6. The chloroacetic acid specific gravity testing device according to claim 1, characterized in that, The test cylinder (16) and inner cylinder (2) are both made of transparent material. The bottom surface of the frame (1) is fixedly installed with a waste discharge pipe (37) that is rotatably connected to the waste discharge chamber (6). A valve is fixedly installed inside the waste discharge pipe (37).

7. The testing method of the chloroacetic acid specific gravity testing device according to claim 4, characterized in that, Includes the following steps: SS001. Before the test, the sample storage chamber (3) is filled with a sufficient amount of chloroacetic acid test solution, and the liquid storage chamber (5) is filled with a sufficient amount of clean water. Before the test, the lifting ring (8) is reset to the initial maximum height, and the waste outlet pipe (37) is connected to the external waste discharge cylinder (15). After steps SS002 and SS001, the monitored values ​​of the tension sensor (32) and the liquid level sensor (35) are zeroed. SS003. During the test, under the driving action of the liquid delivery module (7), a certain amount of clean water is delivered into the test cylinder (16). The screw drive module (9) drives the lifting ring (8) to place the probe (34) into the test cylinder (16) containing clean water. After the probe (34) has been fully displaced, the clean water in the test cylinder (16) should overflow the probe (34). When the clean water in the test cylinder (16) overflows the probe (34), the calibration program in the microcontroller (36) completes the initial reference value calibration. SS004. After the initial reference value is calibrated, the solenoid valve b in the waste discharge cylinder (15) is opened, and the clean water in the test cylinder (16) is drained. After the clean water is drained, the probe (34) is reset to the initial height under the action of the lifting ring (8). After the reset is completed, the sample storage chamber (3) quantitatively sends chloroacetic acid test solution into the test cylinder (16). After the chloroacetic acid test solution is sent in, the liquid level of the test solution should be ensured to be above the probe (34). When the test solution is above the probe (34) at this time, the servo motor (11) works and drives the stirring module to stir the chloroacetic acid. The acetic acid test solution is stirred. After the stirring module stirs the chloroacetic acid test solution for a specified time, the servo motor (11) is turned off and the chloroacetic acid test solution is left to stand. After the chloroacetic acid test solution has been left to stand for a specified time, the microcontroller (36) receives data feedback from the tension sensor (32) and calibrates the value of the tension sensor (32) after standing as the real-time feedback value. At this time, the microcontroller (36) calculates the initial reference value and the real-time feedback value of the tension sensor (32), and then uses the formula to calculate the specific gravity data of chloroacetic acid in the chloroacetic acid test solution.

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