Sample adding and sample processing device for thermal stability test of insoluble sulfur

Abstract

The utility model discloses a sample adding and sample processing device for a thermal stability test of insoluble sulfur. The sample adding and sample processing device comprises a heating chamber, a cooling chamber and a separation chamber which are arranged in parallel and are provided with upward openings, the stand column is vertically arranged on one side of the heating chamber; the cross beam is horizontally arranged, and one end of the cross beam is slidably mounted on the stand column; the fixing frame is a horizontal support fixedly arranged at the top end of the stand column; the test tube is vertically mounted on the cross beam in a sliding manner; the bottle plug is of a hollow cylinder structure; the first reagent storage bottle and the second reagent storage bottle are mounted on the fixing frame; the outlets of the first reagent storage bottle and the second reagent storage bottle are respectively provided with a valve for controlling the opening and closing of the ports; the test tube is used for moving up and down along with the lifting of the beam along the stand column and horizontally moving along the beam. The problems that an existing insoluble sulfur thermal stability experiment is tedious in operation, low in detection efficiency and large in error are solved.

Description

[Technical field]

[0001] The utility model belongs to the technical field of insoluble sulfur thermal stability detection, and in particular relates to an insoluble sulfur thermal stability test sample addition and sample processing device. [Background technology]

[0002] Insoluble sulfur has certain chemical stability and physical inertness at room temperature. It can be evenly distributed in the rubber during processing, maintaining the uniformity of the rubber components, making the rubber have good self-adhesiveness, promoting the adhesion between rubber layers and between rubber layers and reinforcing materials, and can effectively prevent and reduce the frosting phenomenon during storage of rubber. It is a recognized best rubber vulcanizer with non-frost characteristics.

[0003] With the technological progress of the tire industry and the increase in vulcanization temperature, the requirements for the stability of insoluble sulfur in room temperature storage and the heat stability in the vulcanization process application are becoming higher and higher. The thermal stability of insoluble sulfur has become an important indicator to measure the quality of insoluble sulfur. Accurate testing of the thermal stability of insoluble sulfur can correctly evaluate the quality of insoluble sulfur and ensure the quality of radial tire products.

[0004] The existing oil bath method for testing the thermal stability of insoluble sulfur generally includes the following steps: heating the insoluble sulfur, cooling the insoluble sulfur, dissolving the insoluble sulfur, and finally filtering out the part insoluble in carbon disulfide, drying, and weighing. In this experimental process, a large number of devices are used, and the high-temperature heating, cooling, and dissolving processes of the samples are cumbersome. The experimenter needs to manually take the test tube many times and manually set the experimental time and other parameters. The detection efficiency is low, the error is large, and the repeatability and reproducibility of the test results are poor. [Contents of the utility model]

[0005] The utility model aims to provide a sample adding and sample processing device for testing the thermal stability of insoluble sulfur, so as to solve the problems of complicated operation, low detection efficiency and large error in the existing insoluble sulfur thermal stability experiment.

[0006] The utility model adopts the following technical scheme: a device for adding samples and processing samples for testing the thermal stability of insoluble sulfur, comprising:

[0007] A heating chamber, a cooling chamber and a separation chamber are arranged in parallel and all have openings facing upward;

[0008] A column is vertically arranged on one side of the heating chamber;

[0009] A crossbeam is horizontally arranged above the heating chamber, the cooling chamber and the separation chamber, and one end of the crossbeam is slidably mounted on the column;

[0010] A fixed frame, which is a horizontal bracket fixedly arranged on the top of the column;

[0011] A test tube, vertically and slidably mounted on the crossbar, with its mouth facing upwards;

[0012] A bottle stopper, which is a hollow cylindrical structure and is used for being detachably mounted at the mouth of the test tube;

[0013] A first reagent storage bottle and a second reagent storage bottle are installed on a fixed frame, with the bottle mouths facing downward; the outlets of the first reagent storage bottle and the second reagent storage bottle are both connected to the hollow channel of the bottle stopper through a hose; the outlets of the first reagent storage bottle and the second reagent storage bottle are both provided with valves for controlling the opening and closing of their ports;

[0014] The test tube is used to move up and down following the lifting and lowering of the crossbeam along the column, and is also used to move horizontally along the crossbeam.

[0015] Furthermore, it also includes a sample adder with a hollow cylindrical structure, in which the empty channel is two coaxially arranged frustums and a cylinder, the smaller diameter ends of the two frustums have the same diameter and are connected to each other, and the larger diameter end of one of the frustums is connected to the cylinder, and the cylinder is used to be mounted on the tube mouth of the test tube.

[0016] Furthermore, a slide groove is horizontally arranged on the crossbeam, a slider is installed in the slide groove, and an elastic U-shaped clip for clamping the test tube is provided on the slider; the slider is used to slide in the slide groove to drive the horizontal movement of the test tube.

[0017] Furthermore, the heating chamber is a magnetic stirrer, and an oil bath is placed on its stirring platform; the cooling chamber is a magnetic stirrer, and an ice water bath is placed on its stirring platform; and the separation chamber is a magnetic stirrer.

[0018] Furthermore, a first timer, a second timer and a third timer are respectively arranged on the outer wall surfaces of the heating chamber, the cooling chamber and the separation chamber.

[0019] Furthermore, the test tube is provided with scales, and the bottom thereof is a flat structure.

[0020] Furthermore, scale values ​​are provided on the outer wall surfaces of the first reagent storage bottle and the second reagent storage bottle.

[0021] The beneficial effects of the utility model are as follows: by setting the upright column, the crossbeam and the fixed frame, the lifting and translation of the test tube can be realized, which is convenient for the rapid conversion of the test tube between the three steps of heating, cooling and separation; by setting the first reagent storage bottle and the second reagent storage bottle, the liquid adding step in the experiment is more convenient; by setting the fixed timing unit of the first timer, the second timer and the third timer, the control of the timing process can be made simpler; by adding the sample through the sampler, the problem of the sample sticking to the wall of the test tube and causing the test result to be high is avoided. The overall experimental device solves the problems of cumbersome operation, low detection efficiency and large error in the existing insoluble sulfur thermal stability experiment.

Brief Description of the Drawings

[0022] Figure 1 This is a schematic diagram of the structure of a sample adding and sample processing device for testing the thermal stability of insoluble sulfur according to the utility model;

[0023] Figure 2 The utility model is a schematic diagram of the structure of a test tube and a sample adder of a sample adding and sample processing device for testing the thermal stability of insoluble sulfur.

[0024] Among them, 1. heating chamber, 2. cooling chamber, 3. separation chamber, 4. test tube, 5. sampler, 6. hose, 7. first reagent storage bottle, 8. second reagent storage bottle, 9. column, 10. beam, 11. slide, 12. first timer, 13. second timer, 14. third timer, 15. valve, 16. bottle stopper, 17. fixing frame. [Specific implementation method]

[0025] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0026] The utility model provides a device for adding samples and processing samples for testing the thermal stability of insoluble sulfur. Figure 1 As shown, including:

[0027] The heating chamber 1, cooling chamber 2 and separation chamber 3 are arranged in parallel and all open upward. The heating chamber 1 is used to suspend insoluble sulfur in liquid paraffin for high temperature heating; the cooling chamber 2 is used to suspend insoluble sulfur in liquid paraffin for low temperature cooling; the separation chamber 3 uses carbon disulfide as a solvent to dissolve and separate the soluble sulfur and oil components in the heated and cooled insoluble sulfur.

[0028] A column 9 is vertically arranged on one side of the heating chamber 1;

[0029] A crossbeam 10 is horizontally arranged above the heating chamber 1, the cooling chamber 2 and the separation chamber 3, and one end of the crossbeam 10 is slidably mounted on the column 9;

[0030] A fixing frame 17, which is a horizontal bracket fixedly arranged on the top of the column 9;

[0031] A test tube 4 is vertically and slidably mounted on the crossbeam 10, with its mouth facing upward;

[0032] A bottle stopper 16, which is a hollow cylindrical structure and is used to be detachably mounted at the mouth of the test tube 4;

[0033] A first reagent storage bottle 7 and a second reagent storage bottle 8 are installed on a fixing frame 17, with the bottle mouths facing downwards; the outlets of the first reagent storage bottle 7 and the second reagent storage bottle 8 are both connected to the hollow channel of the bottle plug 16 through a hose 16; valves 15 for controlling the opening and closing of the ports are provided at the outlets of the first reagent storage bottle 7 and the second reagent storage bottle 8. Liquid paraffin is contained in the first reagent storage bottle 7, and carbon disulfide is contained in the second reagent storage bottle 8.

[0034] The test tube 4 is used to move up and down following the lifting and lowering of the crossbeam 10 along the column 9 , and is also used to move horizontally along the crossbeam 10 .

[0035] In some embodiments, a sample adder 5 of a hollow cylindrical structure is also included, wherein the empty channel is two coaxially arranged truncated cones and a cylinder, the ends with smaller diameters on the two truncated cones have the same diameter and are connected to each other, and the end with larger diameter on one of the truncated cones is connected to the cylinder, and the cylinder is used to be sleeved on the tube mouth of the test tube 4. If the sample adder 5 is not used for sample addition, the sample will usually stick to the wall of the test tube, and the soluble sulfur stuck to the wall of the test tube cannot be converted, resulting in a high test result. When the sample adder 5 is used, the empty channels are all inclined, and the diameters of the positions where the two truncated cone channels are connected are the same, which is conducive to guiding the entry of the sample.

[0036] In some embodiments, a slide groove 11 is horizontally arranged on the crossbeam 10, a slider is installed in the slide groove 11, and an elastic U-shaped clamp for clamping the test tube 4 is provided on the slider; the slider is used to slide in the slide groove 11 to drive the horizontal movement of the test tube 4.

[0037] In some embodiments, each magnetic stirrer has a stirring platform. Heating chamber 1 is a magnetic stirrer, and an oil bath is placed on its stirring platform; cooling chamber 2 is a magnetic stirrer, and an ice water bath is placed on its stirring platform; and separation chamber 3 is a magnetic stirrer.

[0038] In some embodiments, the outer wall surfaces of the heating chamber 1, the cooling chamber 2 and the separation chamber 3 are respectively provided with a first timer 12, a second timer 13 and a third timer 14. The three timers can be set to fixed timing units respectively, and there is no need to manually adjust the countdown time each time, which is easier to operate, saves time and effort, and has high accuracy of the detection results. For example, the countdown unit of the first timer 12 is set to 15 minutes, the countdown unit of the second timer 13 is set to 1 minute; and the countdown unit of the third timer 14 is set to 3 minutes.

[0039] In some embodiments, the test tube 4 is provided with scales, and its bottom is a flat structure. The test tube 4 is changed from a conventional round-bottomed test tube to a flat-bottomed one, so that it is not easy to tip over and does not need to be supported by the experimenter.

[0040] In some embodiments, the outer wall surfaces of the first reagent storage bottle 7 and the second reagent storage bottle 8 are both provided with scale values. The openings of the first reagent storage bottle 7 and the second reagent storage bottle 8 face downwards for easy liquid addition, and the amount of liquid added can be controlled by the provided scale values ​​and valve 15.

[0041] In some embodiments, two or more test tubes 4 may be included to simultaneously complete the experiment of the thermal stability of insoluble sulfur. Two test tubes 4 may be installed on the crossbeam 10 at the same time to perform the experiment at the same time.

[0042] Taking the experiment of measuring the thermal stability of insoluble sulfur at 105°C as an example, the method of using the insoluble sulfur thermal stability test sample addition and sample processing device of the utility model is as follows:

[0043] 1) Cover the bottle mouth of the test tube 4 with a bottle stopper 16, install the test tube 4 in the elastic U-shaped clip on the crossbeam 10, adjust the height of the crossbeam 10, and ensure that the bottom of the test tube 4 is placed in the oil bath in the heating chamber 1; the length of the test tube 4 immersed in the oil bath is at least 10 cm;

[0044] Open the valve 15 on the first reagent storage bottle 7, and introduce 30 ml of liquid paraffin into the test tube 4; observe the scale value on the first reagent storage bottle 7 to control the amount of liquid paraffin added;

[0045] Turn on the magnetic stirrer of the heating chamber 1, start the first timer 12 to count for 15 minutes, and after the time is up, measure the temperature of the liquid paraffin in the test tube 4 through the temperature sensor. If it reaches 105°C, proceed to the next step; if it does not reach 105°C, continue to maintain the current heating state.

[0046] 2) Open the bottle stopper 16 of the test tube 4, install the sample adder 5 at the bottle mouth of the test tube 4, add 1g of insoluble sulfur into the test tube 4 through the sample adder 5, and then remove the sample adder 5 and replace it with the bottle stopper 16 after the addition;

[0047] The magnetic stirrer of the heating chamber 1 is turned on, and the first timer 12 is used to time another 15 minutes. After the time is up, the next step is entered.

[0048] 3) Rapidly raise the crossbeam 10 to take the test tube 4 out of the heating chamber 1, then slide the test tube 4 along the slide groove 11 to the top of the cooling chamber 2, and then press down the crossbeam 10 to immerse the test tube 4 in the ice water bath in the cooling chamber 2;

[0049] Turn on the magnetic stirrer of the cooling chamber 2, start the second timer 13 to count for 1 minute; after the time is up, proceed to the next step.

[0050] 4) Rapidly raise the crossbeam 10 to take the test tube 4 out of the cooling chamber 2, then slide the test tube 4 along the slide 11 to the top of the separation chamber 3, and then press down the crossbeam 10 to place the test tube 4 on the tray of the magnetic stirrer in the separation chamber 3;

[0051] Open the valve 15 on the second reagent storage bottle 8, and introduce 50 ml of carbon disulfide into the test tube 4; observe the scale value on the second reagent storage bottle 8 to control the amount of carbon disulfide added;

[0052] The magnetic stirrer of the separation chamber 3 is turned on, and the third timer 14 is used to count 3 minutes, and the stirring and separation is completed.

[0053] Through the above steps, the sample processing is completed.

Claims

1. A device for adding samples and processing samples for testing the thermal stability of insoluble sulfur, characterized in that: include: A heating chamber (1), a cooling chamber (2) and a separation chamber (3) which are arranged in parallel and all have their openings facing upward; A column (9) vertically arranged on one side of the heating chamber (1); a crossbeam (10) horizontally arranged above the heating chamber (1), the cooling chamber (2) and the separation chamber (3), one end of which is slidably mounted on the column (9); A fixed frame (17), which is a horizontal support fixedly arranged on the top of the column (9); a test tube (4) vertically and slidably mounted on the crossbeam (10) with its mouth facing upward; a bottle stopper (16) having a hollow cylindrical structure and being detachably mounted at the mouth of the test tube (4); A first reagent storage bottle (7) and a second reagent storage bottle (8), with the bottle mouths facing downward, are mounted on the fixing frame (17); the outlets of the first reagent storage bottle (7) and the second reagent storage bottle (8) are both connected to the hollow channel of the bottle stopper (16) through a hose (6); the outlets of the first reagent storage bottle (7) and the second reagent storage bottle (8) are both provided with valves (15) for controlling the opening and closing of the ports; The test tube (4) is used to move up and down following the rise and fall of the crossbeam (10) along the column (9), and is also used to move horizontally along the crossbeam (10).

2. The device for adding sample and processing sample for testing thermal stability of insoluble sulfur according to claim 1, characterized in that: It also includes a sample injector (5) with a hollow cylindrical structure, wherein the hollow channel is composed of two coaxially arranged truncated cones and a cylinder, the ends with smaller diameters on the two truncated cones have the same diameter and are connected to each other, and the end with larger diameter on one of the truncated cones is connected to the cylinder, and the cylinder is used to be mounted on the tube mouth of the test tube (4).

3. A sample adding and sample processing device for testing the thermal stability of insoluble sulfur as claimed in claim 1 or 2, characterized in that: A slide groove (11) is horizontally arranged on the crossbeam (10), a slide block is installed in the slide groove (11), and an elastic U-shaped clamp for clamping the test tube (4) is provided on the slide block; the slide block is used to slide in the slide groove (11) to drive the test tube (4) to move horizontally.

4. The device for adding sample and processing sample for testing thermal stability of insoluble sulfur according to claim 1 or 2, characterized in that: The heating chamber (1) is a magnetic stirrer, and an oil bath is placed on its stirring platform; the cooling chamber (2) is a magnetic stirrer, and an ice water bath is placed on its stirring platform; and the separation chamber (3) is a magnetic stirrer.

5. The device for adding sample and processing sample for testing thermal stability of insoluble sulfur according to claim 1 or 2, characterized in that: A first timer (12), a second timer (13) and a third timer (14) are respectively arranged on the outer wall surfaces of the heating chamber (1), the cooling chamber (2) and the separation chamber (3).

6. The device for adding sample and processing sample for testing thermal stability of insoluble sulfur according to claim 1 or 2, characterized in that: The test tube (4) is provided with scales, and its bottom is a flat structure.

7. The device for adding sample and processing sample for testing thermal stability of insoluble sulfur according to claim 1 or 2, characterized in that: The outer wall surfaces of the first reagent storage bottle (7) and the second reagent storage bottle (8) are both provided with scale values.

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