CN216433966U - Flash point testing device capable of continuously detecting - Google Patents
Flash point testing device capable of continuously detecting Download PDFInfo
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- CN216433966U CN216433966U CN202122346061.1U CN202122346061U CN216433966U CN 216433966 U CN216433966 U CN 216433966U CN 202122346061 U CN202122346061 U CN 202122346061U CN 216433966 U CN216433966 U CN 216433966U
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Abstract
The utility model discloses a flash point testing device capable of continuous detection, which comprises a workbench and a control box positioned on one side of the workbench, wherein a controller and a control screen are arranged in the control box, a groove is arranged in the middle of the workbench, a detection rotary table is arranged in the groove, a plurality of test cup placing holes capable of placing test cups are arranged on the detection rotary table, an electric heating wire is arranged at the bottom of each test cup placing hole, a condensation sleeve is arranged in each test cup placing hole in a surrounding manner, and the electric heating wire and the condensation sleeve are connected with the controller; be provided with application of sample subassembly, ignition module and the washing subassembly that sets gradually along detecting revolving stage clockwise rotation direction on the workstation, application of sample subassembly and ignition module all are located the test cup top, it stretches into in the test cup through lifting unit to wash the subassembly. The flash point testing device can realize continuous variable temperature detection on the same sample, and improve the flash point testing efficiency.
Description
Technical Field
The utility model relates to a flash point detects technical field, concretely relates to flash point testing arrangement that can detect in succession.
Background
The flash point is a safety indicator for storage, transportation and use of flammable liquids, and is also an indicator of the volatility of flammable liquids. The minimum temperature at which a liquid can ignite by vaporization using an ignition source under the standard pressure of 101.3kPa and the specified test conditions. The flash-fire phenomenon is that when enough steam is generated on the surface of the liquid and is mixed with air to form combustible gas, a short period of fire light is generated when the liquid meets a fire source, and the phenomenon is flash-fire and is extinguished, and the phenomenon is called flash-fire, and the lowest temperature at which the flash-fire occurs is called a flash point. The flash point is also an important parameter for evaluating the flammability characteristics of chemicals and is an important basis for classifying the flammability characteristics of liquid chemicals. Standards for classification of dangerous chemicals/goods at home and abroad, such as the united nations 'recommendation on dangerous goods transportation,' the global unified classification and labeling system of chemicals ', the national standard' classification and labeling of chemicals part 7: a series of flash point tests are specified or recommended in the flammable liquids (GB 30000.7). The standards currently followed by the industry for closed cup flash point testing are primarily the Abel method (DIN 51755, IP 170), the TAG method (ASTM D56), and the PenskyMartens test method (ASTM D93). Although the methods are different in details, the method adopts a closed cup simulating the actual working condition, and the technical process is that the cup is heated in a closed container with the capacity of 50-70 mL at a certain heating speed and is ignited at certain time intervals until the flash point is reached. In 1992, the Grabner doctor in Austria developed a new continuous closed cup flash point (CCCFP method) test method (ASTM D6450), and the method adopts an MINIFLASH flash point instrument, only needs 1mL of sample, adopts electric arc ignition, avoids fire hazard caused by large sample amount and open fire, and is widely applied in many fields; in 1999, the CCCFP method was listed as the formal test standard of ASTM (ASTM D6450), and in 2004, the modified continuous closed cup flash point test method (MCCCFP method) was listed as the formal test standard of ASTM (ASTM D7094), which has a test range of 35 to 225 ℃.
The flash point testing method and the equipment basically meet the requirement of testing the flammability characteristic of chemicals. However, the flash point test is a continuous trial process, and in most cases, it is impossible to measure the accurate flash point at one time, and the accurate flash point value can be measured only after many trials and touch tests. In the flash point test process, firstly, the flash point value of a sample to be tested is estimated according to the components or the chemical structure of the sample to be tested, the flash point test value is set according to the estimated flash point, if flash combustion occurs in the first test, the test temperature is reduced, if flash combustion does not occur, the test temperature is increased, therefore, the accurate flash point can be measured at least by repeatedly testing for 3 times, the test cup is cleaned in each test, and if the temperature needs to be reduced for continuous test, the test cup is cooled, the cooling process is relatively slow, waiting is needed, and the test time is prolonged. For a mixture with a low flash point, if the components are complex and the flash point value cannot be estimated accurately, the testing time is long, 3 hours or even longer is needed to complete the testing of a sample, and the method is not suitable for the flash point testing requirements of large batches of chemicals and the rapid testing under the condition of emergency investigation. Therefore, it is desirable to design a flash point fast detection device to improve the flash point testing efficiency, and to achieve continuous detection and reduce the waiting time.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a but flash point testing arrangement of continuous detection can realize carrying out the alternating temperature detection in succession to same kind of sample, improves flash point efficiency of software testing.
The utility model discloses a realize above-mentioned purpose, the technical solution who adopts is:
a flash point testing device capable of continuous detection comprises a workbench and a control box positioned on one side of the workbench, wherein a controller and a control screen are arranged in the control box, a groove is formed in the middle of the workbench, a detection rotary table is arranged in the groove, a plurality of test cup placing holes capable of placing test cups are formed in the detection rotary table, an electric heating wire is arranged at the bottom of each test cup placing hole, a condensation sleeve is arranged in each test cup placing hole in a surrounding mode, and the electric heating wires and the condensation sleeve are connected with the controller;
the test device is characterized in that a sample adding assembly, an ignition assembly and a cleaning assembly which are sequentially arranged along the clockwise rotation direction of the detection turntable are arranged on the workbench, the sample adding assembly and the ignition assembly are both positioned above the test cup, and the cleaning assembly extends into the test cup through the lifting assembly.
Through above-mentioned technical scheme, be provided with sample application subassembly, ignition subassembly and the washing subassembly around detecting the revolving stage on the workstation, can realize sample application, ignition and abluent serialization, in addition, through setting up the condensation sleeve pipe, can realize continuous cooling in the flash point testing process, reduce cooling latency.
Further, the application of sample subassembly includes sample bottle and application of sample pipe, the sample bottle is placed on the workstation, the application of sample pipe passes through the pipeline and is connected with the sample bottle, and is provided with the application of sample pump on the application of sample pipe, the application of sample pump is connected with the controller, the liquid outlet of application of sample pipe is located the test cup top.
Through above-mentioned technical scheme, can adopt the application of sample subassembly to carry out automatic application of sample to the lower sample of viscosity, to the higher relatively viscous sample of viscosity, can adopt manual application of sample.
Further, wash the subassembly including fixing scavenge pipe and the waste liquid extraction pipe in the lifting unit below, the washing liquid reserve tank and waste liquid collection box are connected respectively to the one end of scavenge pipe and waste liquid extraction pipe, the other end of scavenge pipe and waste liquid extraction pipe passes through in the lifting unit stretches into the test cup.
Through above-mentioned technical scheme, after the test of once igniteing is accomplished, can turn to the cleaning station and carry out self-cleaning to the test cup to collect the waste liquid, prevent environmental pollution.
Further, a suction pump is arranged between the cleaning pipe and the cleaning liquid storage tank and between the waste liquid extraction pipe and the waste liquid recovery tank.
Through above-mentioned technical scheme, adopt the suction pump can guarantee the drainage of the addition of washing liquid and waste liquid.
Further, the lifting component is an electric push rod I, one end of the cleaning pipe and one end of the waste liquid extraction pipe are fixed at the bottom of the electric push rod I, and the electric push rod I is connected with the controller.
Through above-mentioned technical scheme, can be convenient for control scavenge pipe and waste liquid extraction pipe stretch into the test cup in, wash the test cup.
Furthermore, a cup cover assembly is arranged on one side, located on the ignition assembly, of the workbench and comprises a cup cover and an electric push rod II for controlling the cup cover to lift, the cup cover is fixed to the bottom of the electric push rod II, and the cup cover is located right above the test cup corresponding to the ignition assembly.
Through the technical scheme, the cup cover assembly can be used for closed flash point detection, and the cup cover can be quickly opened.
Further, a temperature sensor is arranged at the bottom of the second electric push rod, the second electric push rod drives the cup cover to lift and descend simultaneously with the temperature sensor, and the second electric push rod and the temperature sensor are both connected with the controller.
Further, the ignition assembly comprises an igniter, a flame ion detector and an electric push rod III for controlling the igniter and the flame ion detector to stretch, the electric push rod III controls the igniter and the flame ion detector to extend to the upper side of the cup opening of the test cup, the igniter and the flame ion detector are arranged at one end of the electric push rod III in parallel, a gap is formed between the igniter and the flame ion detector, and the flame ion detector is close to one side of the sample adding assembly.
Further, the bottom of the detection rotary table is provided with a rotating motor, the rotating motor controls the detection rotary table to rotate, and the rotating motor is connected with the controller.
Through the technical scheme, the rotation of the detection rotary table can be realized, so that the continuity of the sampling, ignition and cleaning processes is realized.
Furthermore, a connecting plate for fixing the first electric push rod and the second electric push rod is arranged above the workbench.
The utility model has the advantages that:
the utility model can realize continuous detection of the flash point of the same sample by arranging the detection rotary table and placing a plurality of test cups on the detection rotary table, and each test cup is provided with the heating device and the condensing device, thereby realizing continuous variable temperature detection of the same sample and reducing the waiting time in the detection process; additionally, the utility model discloses still increase the self-cleaning subassembly, can save test cup scavenging time at the flash point and detect back self-cleaning test cup, improve flash point efficiency of software testing.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a top view of the table;
FIG. 4 is a schematic view of the ignition assembly and the purge assembly;
FIG. 5 is a view showing the installation positions of the igniter and the flame ion detector;
fig. 6 is a schematic structural view of the cap assembly.
Fig. 7 is a schematic view showing the connection relationship of the cleaning assembly.
The figure is marked with: 1. a work table; 2. a control box; 3. a control screen; 4. a connecting plate; 5. detecting the rotary table; 501. a test cup; 502. a test cup placement hole; 503. an electric heating wire; 504. a condensing sleeve; 6. a rotating electric machine; 7. a sample application assembly; 701. a sample bottle; 702. a sample adding pipe; 703. a sample adding pump; 8. an ignition assembly; 801. an igniter; 802. a flame ion detector; 803. an electric push rod III; 9. cleaning the assembly; 901. cleaning the tube; 902. a waste liquid extraction pipe; 903. a cleaning liquid storage tank; 904. a waste liquid recovery tank; 905. an electric push rod I; 10. a cup cover assembly; 101. a cup cover; 102. a second electric push rod; 103. a temperature sensor.
Detailed Description
The utility model provides a but flash point testing arrangement of continuous detection, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, it is following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "top", "bottom", "upper", "lower", "inner", "outer", and the like refer to orientations or positional relationships based on the drawings, and are used merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
The present invention will be described in detail with reference to the accompanying drawings:
referring to fig. 1-3, the present invention provides a flash point testing device capable of continuous detection, which is used for closed flash point testing. The flash point testing device comprises a workbench 1 and a control box 2 positioned on one side of the workbench 1, wherein the control box 2 comprises a controller, a control screen 3 and an operating switch; a connecting plate 4 is arranged above the workbench 1, and the connecting plate 4 is vertically fixed on one side of the control box 2; a groove is formed in the middle of the workbench 1, a detection rotary table 5 is arranged in the groove, a rotary motor 6 is arranged at the bottom of the detection rotary table 5, the rotary motor 6 controls the detection rotary table 5 to rotate, and the rotary motor is connected with a controller; the detection turntable 5 is provided with a plurality of test cup placing holes 502 capable of placing the test cups 501, the bottom of each test cup placing hole 502 is provided with an electric heating wire 503, a condensing sleeve 504 is arranged in each test cup placing hole 502 in a surrounding manner, the condensing sleeve is connected with a refrigerator, the refrigerator is arranged in the workbench, and the electric heating wire 503 and the refrigerator are both electrically connected with the controller; in addition, be provided with sample application subassembly 7, ignition module 8 and washing subassembly 9 that set gradually along detecting 5 clockwise rotation directions of revolving stage on the workstation 1, sample application subassembly 7 and ignition module 8 all are located test cup 501 top, it stretches into in the test cup 501 through lifting unit to wash subassembly 9. Through be provided with application of sample subassembly 7 around detecting revolving stage 5 on workstation 1, ignition subassembly 8 and washing subassembly 9, can realize the sample application of sample, ignition and abluent serialization are gone on, and combine together through electric heating wire 503 and refrigerator, the rapid control of can being convenient for intensifies and cools down, if judge the flash after the ignition test finishes promptly, then test next time can automatic cooling, if judge not take place the flash after the test finishes, then test next time can automatic heating up, through intensification and cooling cycle many times, survey flash point value.
Specifically, referring to fig. 1, the sample adding assembly 7 includes a sample bottle 701 and a sample adding pipe 702, the sample bottle 701 is placed on the workbench 1, the sample adding pipe 702 is connected with the sample bottle 701 through a pipeline, a sample adding pump 703 is arranged on the sample adding pipe 702, the sample adding pump 703 is connected with the controller, a liquid outlet of the sample adding pipe 702 is located above the test cup 501, and a connecting pipeline between the sample adding pipe 702 and the sample bottle 701 is fixed below the connecting plate 4 through a fixing frame. In the actual sample testing process, adopt application of sample subassembly 7 to carry out automatic application of sample to the lower sample of viscosity usually, to the higher relatively viscous sample of viscosity, generally adopt manual application of sample.
Referring to fig. 4 and 5, the ignition assembly 8 includes an igniter 801, a flame ion detector 802, and a third electric push rod 803 for controlling the extension and contraction of the igniter 801 and the flame ion detector 802, the igniter 801, the flame ion detector 802, and the third electric push rod 803 are all electrically connected to the controller, the igniter 801 and the flame ion detector 802 are disposed at one end of the third electric push rod 803 in parallel, and a space is provided between the igniter 801 and the flame ion detector 802, when the temperature sensor 103 detects that the sample in the test cup reaches a set temperature, the second electric push rod 102 contracts upward to open the cup cover 101, and at the same time, the igniter 801 is activated, then the third electric push rod 803 pushes the igniter 801 and the flame ion detector 802 to the upper side of the cup mouth of the open test cup to perform flash point detection, and the flame ion detector 802 detects whether flash occurs or not, and sends a flash signal to the controller, the controller sends a heating or cooling signal to the electric heating wire or the refrigerator according to whether the flash combustion occurs.
Referring to fig. 6, a cup cover assembly 10 is arranged on one side of the ignition assembly 8 on the workbench 1, the cup cover assembly 10 includes a cup cover 101 and a second electric push rod 102 for controlling the cup cover 101 to lift, the second electric push rod 102 is fixed below the connecting plate 4, the cup cover 101 is fixed at the bottom of the second electric push rod 102, and the cup cover 101 is located right above the test cup 501 corresponding to the ignition assembly 8.
Further, the bottom of the second electric push rod 102 is provided with a temperature sensor 103, the second electric push rod 102 drives the cup cover 101 and the temperature sensor 103 to lift simultaneously to cover the test cup 501, and the temperature sensor 103 detects the temperature of the sample in the test cup; in addition, the second electric push rod 102 and the temperature sensor 103 are both connected with the controller, when the temperature sensor 103 detects that the sample in the test cup reaches a set temperature, the second electric push rod 102 contracts upwards to open the cup cover 101, and the ignition assembly 8 is started to detect.
Referring to fig. 4 and 7, the cleaning assembly 9 includes a cleaning tube 901 and a waste liquid extraction tube 902 fixed below the lifting assembly, the end of the waste liquid extraction tube 902 is lower than the cleaning tube 901, one end of the cleaning tube 901 and one end of the waste liquid extraction tube 902 are respectively connected to a cleaning liquid storage tank 903 and a waste liquid recovery tank 904, the other end of the cleaning tube 901 and the other end of the waste liquid extraction tube 902 extend into the test cup 501 through the lifting assembly, the cleaning liquid storage tank 903 can be placed above the workbench 1 or on the side of the workbench 1, and the waste liquid recovery tank 904 is placed on the side of the workbench 1; in addition, suction pumps are provided between the cleaning pipe 901 and the cleaning liquid storage tank 903 and between the waste liquid extraction pipe 902 and the waste liquid recovery tank 904, so as to ensure the addition of the cleaning liquid and the discharge of the waste liquid.
The lifting assembly can specifically adopt a first electric push rod 905, one ends of the cleaning pipe 901 and the waste liquid extraction pipe 902 are fixed at the bottom of the first electric push rod 905, and the first electric push rod 905 is connected with the controller; in addition, be located scavenge pipe and waste liquid extraction tube part between suction pump and an electric putter 905, its distance is adjustable, specifically can set up the scavenge pipe and the waste liquid extraction tube at this position into the spiral tube form, or with the scavenge pipe and the waste liquid extraction tube design at this position longer relatively, leave the lift surplus, in order to guarantee that an electric putter 905 drives scavenge pipe 901 and waste liquid extraction tube 902 tip lift in-process, scavenge pipe 901 and waste liquid extraction tube 902 and washing liquid reserve tank 903, waste liquid recovery case 904 does not break away from.
Above-mentioned cleaning assembly 9 is located the next station of ignition assembly 8, and after the test of once igniteing was accomplished, detection revolving stage 5 rotated, and next a set of sample changes to the ignition station, and the test cup that the test of last a set of completion changes to cleaning station, when not influencing next a set of sample test, can also accomplish the self-cleaning to test cup 501, saves test cup cleaning time to collect the waste liquid, prevent environmental pollution.
Through above-mentioned flash point testing arrangement, can realize carrying out continuous alternating temperature to same sample and detect, specific use is as follows:
(1) preparing a proper cleaning solution, placing the cleaning solution in a cleaning solution storage tank 903, checking whether a waste solution exists in a waste solution recovery tank 904, if the waste solution exists, cleaning, and emptying the waste solution recovery tank 904 before each test because different samples may have incompatibility and even dangerous reaction may be caused after mixing;
(2) a sufficient sample to be tested is placed in the sample bottle 701, the uniformity is noticed in the sampling process, the sampling is rapid, the sample bottle 701 is placed on the workbench 1 and is connected with the sampling pump 703 through a pipeline, the sampling component 7 can be used for automatic sampling for uniform samples with low viscosity, the sampling tube 702 is easy to block for viscous samples with high viscosity, the cleaning is not easy, the automatic sampling function is not recommended, in addition, for uneven suspension, the separation is easy to occur after the placement, and the automatic sampling function is not suitable for;
(3) starting a power supply of the flash point testing device, estimating a flash point temperature according to an actual sample to be tested, setting an initial flash point testing temperature on the control screen 3, starting a refrigerator if the estimated initial flash point testing temperature is lower than room temperature, and starting no refrigerator if the estimated initial flash point testing temperature is higher than the room temperature;
(4) setting a temperature rise gradient or a temperature decrease gradient every time on the control screen 3, and setting a sample adding amount, or adopting a default temperature rise gradient and a default temperature decrease gradient, wherein the default temperature decrease temperature difference is 5 ℃, and the default temperature rise temperature difference is 2 ℃;
(5) starting an automatic detection button, starting a sample adding pump 703, automatically adding a sample to be tested into the test cup 501 according to a set sample amount at a sample adding station (i.e. a test cup position corresponding to a sample adding component), and after the sample adding is finished, driving a detection turntable 5 to rotate by a rotating motor 6 to enable the test cup 501 to rotate to an ignition station (i.e. a test cup position corresponding to an ignition component); then the electric push rod II 102 drives the cup cover 101 and the temperature sensor 103 to descend to cover the test cup 501, and meanwhile the temperature sensor 103 detects the temperature of the sample in the test cup 501; when the temperature sensor 103 detects that a sample in the test cup reaches a set temperature, the electric push rod II 102 contracts upwards to open the cup cover 101, the igniter 801 is started, the electric push rod III 803 pushes the igniter 801 and the flame ion detector 802 to the upper side of the cup opening of the open test cup simultaneously to perform flash point detection, after the test is completed, the igniter 801 is closed, the electric push rod III 803 contracts to move the igniter 801 and the flame ion detector 802 away, the flame ion detector 802 sends a flash signal to the controller, and the controller sends a heating or cooling signal to the electric heating wire or the refrigerator according to whether flash occurs or not;
(6) after the ignition test is finished, the sample adding pump 703 is started again, a sample to be tested is automatically added into the next test cup at the sample adding station according to the set sample amount, and after the sample addition is finished, the rotating motor 6 drives the detection rotary table 5 to rotate, so that the next test cup is rotated to the ignition station; if the sample is subjected to flash combustion during the first ignition test, automatically starting a temperature reduction program, and if the sample is not subjected to flash combustion during the first ignition test, automatically starting a temperature rise program, and then repeating the temperature measurement and ignition processes; meanwhile, the previous test cup is transferred to a cleaning station (i.e. the position of the test cup corresponding to the cleaning assembly), the electric push rod one 905 drives the cleaning tube 901 and the waste liquid extraction tube 902 to extend into the test cup 501, cleaning liquid is added to clean the test cup 501, and the waste liquid extraction tube 902 extracts waste liquid into the waste liquid recovery box 904 in time; repeating the above process until the flash point value is measured;
(7) after the test is finished, the sample bottle 701 is taken down, the waste liquid recovery box 904 is cleaned, and the power supply is turned off.
In the sample adding process of the steps (5) and (6), if the sample is a viscous sample or a suspension sample, the sample can be directly added manually at an ignition station. Can set up full automated inspection procedure and semi-automated inspection procedure like this in advance to set up automated inspection button one and automated inspection button two on the control box respectively, so that the even sample of low viscosity and thick sample or the suspension sample can be detected according to the settlement degree respectively.
Example 1
Adopt the utility model provides a flash point testing arrangement that can detect in succession carries out the flash point detection of remaining silent to certain oil quality, and this oil viscosity is lower, and the composition is even, can adopt automatic application of sample procedure, and it predicts that flash point temperature is 20 ℃, and the temperature is lower relatively, needs to use refrigeration function.
The specific detection process is as follows:
(1) preparing a proper cleaning solution, placing the cleaning solution in a cleaning solution storage tank 903, checking a waste solution recovery tank 904 whether a waste solution exists or not, and if the waste solution exists, cleaning the waste solution to prevent dangerous reaction caused by mixing different samples;
(2) taking a sufficient amount of sample to be tested and placing the sample into a sample bottle, paying attention to uniformity in the sampling process, quickly sampling, and after sampling is finished, placing the sample bottle 701 on a workbench 1 and connecting the sample bottle 701 with a sample adding pump 703 and a sample adding pipe 702;
(3) starting a power supply, setting an initial flash point temperature of 20 ℃ on an operation screen, heating or cooling according to a default cooling temperature difference of 5 ℃ and a heating temperature difference of 2 ℃, wherein the test temperature is lower than room temperature, and a refrigerator is automatically started to refrigerate the test cup through a condensation sleeve;
(4) starting an automatic detection button I, detecting according to a full-automatic program, starting a sample adding pump 703, automatically adding a sample to be detected into a test cup at a sample adding station according to a set sample amount, and after the sample adding is finished, driving a detection rotary table 5 to rotate by a rotating motor 6 to enable the test cup 501 to rotate to an ignition station; then the electric push rod II 102 drives the cup cover 101 and the temperature sensor 103 to descend to cover the test cup 501, and meanwhile, the temperature sensor 103 detects the temperature of the sample in the test cup; when the temperature sensor 103 detects that a sample in the test cup reaches a set temperature, the electric push rod II 102 contracts upwards to open the cup cover 101, the igniter 801 is started, the electric push rod III 803 pushes the igniter 801 and the flame ion detector 802 to the upper side of the cup opening of the opened test cup simultaneously to detect a flash point, the flame ion detector 802 detects that the sample is flashed, and the flash point indicates that the actual flash point of the sample to be tested is lower than the set temperature by 20 ℃, the flame ion detector 802 transmits a flash signal to the controller, and the controller controls the refrigerator to start a cooling program and cool according to a set temperature difference; and meanwhile, the igniter 801 is closed, and the electric push rod III 803 is contracted to move the igniter 801 and the flame ion detector 802 away;
(5) after the ignition test is finished, the sample adding pump 703 is started again, a sample to be tested is automatically added into the next test cup according to the set sample amount at the sample adding station, after the sample adding is finished, the rotating motor 6 drives the detection rotary table 5 to rotate, so that the next test cup is rotated to the ignition station, the temperature measurement and ignition process in the step (4) is repeated on the next test cup, meanwhile, the previous test cup is rotated to the cleaning station, the electric push rod I905 drives the cleaning pipe 901 and the waste liquid extracting pipe 902 to extend into the test cup 501, the cleaning liquid is added to clean the test cup, and the waste liquid is extracted into the waste liquid recycling box 904 in time by the waste liquid extracting pipe 902; repeating the above process until the flash point value is measured;
(6) and after the test is finished, taking down the sample bottle, cleaning the waste liquid recovery box, and turning off the power supply.
The flash point test process takes 36 minutes and the detection time is short.
Example 2
Adopt the utility model provides a flash point testing arrangement that can detect in succession carries out the flash point that closes to a certain viscous crude paint sample and detects, and this paint sample viscosity is high, and unsuitable automatic application of sample adopts manual application of sample, when adopting manual application of sample, can directly be at the application of sample of ignition position. Because the sample is sticky, the accuracy of the estimated flash point is possibly lower, and when the temperature is adjusted, the temperature difference of temperature rise or temperature drop can be manually adjusted to 10 ℃, 5 ℃ and 1 ℃.
The specific detection process is as follows:
(1) preparing a proper cleaning solution, placing the cleaning solution in a cleaning solution storage tank 903, checking a waste solution recovery tank 904 whether a waste solution exists or not, and if the waste solution exists, cleaning the waste solution to prevent dangerous reaction caused by mixing different samples;
(2) starting a power supply, setting the initial flash point temperature to be 30 ℃ on the control screen, and setting the test temperature to be higher than the room temperature without starting refrigeration;
(4) manually adding a sample to be tested into the test cup at an ignition station, starting an automatic detection button II after sample addition is finished, detecting according to a semi-automatic program, starting the cup cover assembly 10, driving the cup cover 101 and the temperature sensor 103 to descend by the electric push rod II 102, covering the test cup 501, and simultaneously detecting the temperature of the sample in the test cup by the temperature sensor 103; when the temperature sensor 103 detects that a sample in the test cup reaches a set temperature, the electric push rod II 102 automatically contracts upwards to open the cup cover 101, the igniter 801 is started, the electric push rod III 803 simultaneously pushes the igniter 801 and the flame ion detector 802 to the upper side of the cup opening of the test cup to perform flash point detection, the flame ion detector 802 detects that the sample is not flashed, the actual flash point of the sample to be tested is higher than the set temperature by 30 ℃, the heating temperature is automatically adjusted to 40 ℃, and the electric heating wire starts to heat and raise the temperature; meanwhile, the igniter 801 is automatically closed after the ignition is finished, and the electric push rod III 803 is contracted to move the igniter 801 and the flame ion detector 802 away;
(5) then the rotary motor 6 drives the detection turntable 5 to rotate, the test cup is transferred to a cleaning station, the cleaning assembly is started to clean, the waste liquid is timely extracted into the waste liquid recycling box 904 by the waste liquid extracting pipe 902, meanwhile, the next test cup is transferred to an ignition station, manual sample adding is carried out on the test cup, in order to guarantee an automatic detection program, a manual sample adding time interval is set, manual sample adding time is reserved, after set time is reached, the cup cover assembly 10 is automatically started, the electric push rod II 102 drives the cup cover 101 and the temperature sensor 103 to descend, the test cup is covered, and meanwhile, the temperature sensor 103 detects the temperature of a sample in the test cup; when the temperature sensor 103 detects that the sample in the test cup reaches a set temperature, the electric push rod II 102 contracts upwards to open the cup cover, the igniter 801 is started, the electric push rod III 803 pushes the igniter 801 and the flame ion detector 802 to the upper side of the cup opening of the open test cup simultaneously to detect the flash point, the flame ion detector 802 detects that the sample is flashed, and the flash point indicates that the actual flash point of the sample to be tested is lower than 40 ℃, the temperature is automatically reduced to 35 ℃, and the refrigerator is started; meanwhile, the igniter 801 is automatically closed after the ignition is finished, and the electric push rod III 803 is contracted to move the igniter 801 and the flame ion detector 802 away; repeating the above process until the flash point value is measured;
(6) and after the test is finished, cleaning the waste liquid recovery box and turning off the power supply.
Above-mentioned flash point test process is consuming time 45 minutes altogether, and check-out time is short, and adopts original flash point testing arrangement to detect, need wait for the cooling process, and need wash the test cup at every turn, and check-out time can reach about 2h, and detection efficiency hangs down
It should be noted that the parts not described in the present invention can be realized by using or referring to the existing technologies.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (10)
1. A flash point testing device capable of continuous detection is characterized in that: the test device comprises a workbench and a control box positioned on one side of the workbench, wherein a controller and a control screen are arranged in the control box, a groove is formed in the middle of the workbench, a detection rotary table is arranged in the groove, a plurality of test cup placing holes capable of placing test cups are formed in the detection rotary table, an electric heating wire is arranged at the bottom of each test cup placing hole, a condensation sleeve is arranged in each test cup placing hole in a surrounding mode, and the electric heating wires and the condensation sleeve are connected with the controller;
the test device is characterized in that a sample adding assembly, an ignition assembly and a cleaning assembly which are sequentially arranged along the clockwise rotation direction of the detection turntable are arranged on the workbench, the sample adding assembly and the ignition assembly are both positioned above the test cup, and the cleaning assembly extends into the test cup through the lifting assembly.
2. The flash point testing device capable of continuously detecting according to claim 1, wherein the sample adding component comprises a sample bottle and a sample adding pipe, the sample bottle is placed on the workbench, the sample adding pipe is connected with the sample bottle through a pipeline, a sample adding pump is arranged on the sample adding pipe, the sample adding pump is connected with the controller, and a liquid outlet of the sample adding pipe is positioned above the testing cup.
3. The apparatus according to claim 1, wherein the cleaning assembly comprises a cleaning tube and a waste liquid extraction tube fixed below the lifting assembly, one end of the cleaning tube and one end of the waste liquid extraction tube are respectively connected to the cleaning liquid storage tank and the waste liquid recovery tank, and the other end of the cleaning tube and the other end of the waste liquid extraction tube extend into the testing cup through the lifting assembly.
4. The apparatus according to claim 3, wherein a suction pump is disposed between the cleaning tube and the cleaning solution storage tank, and between the waste liquid extraction tube and the waste liquid recovery tank.
5. The apparatus as claimed in claim 3, wherein the lifting assembly is a first electric rod, one end of the cleaning tube and one end of the waste liquid extraction tube are fixed to a bottom of the first electric rod, and the first electric rod is connected to the controller.
6. The device for testing the flash point capable of being continuously detected according to claim 1, wherein a cup cover assembly is arranged on one side of the ignition assembly on the workbench and comprises a cup cover and a second electric push rod for controlling the cup cover to lift, the cup cover is fixed at the bottom of the second electric push rod, and the cup cover is positioned right above the test cup corresponding to the ignition assembly.
7. The apparatus of claim 6, wherein a temperature sensor is disposed at the bottom of the second electric push rod, the second electric push rod drives the cup cover and the temperature sensor to lift and lower simultaneously, and the second electric push rod and the temperature sensor are both connected to the controller.
8. The device for testing the flash point capable of continuously detecting according to claim 6, wherein the ignition assembly comprises an igniter, a flame ion detector and a third electric push rod for controlling the igniter and the flame ion detector to stretch, the third electric push rod controls the igniter and the flame ion detector to extend to the upper part of the cup mouth of the test cup, the igniter and the flame ion detector are arranged at one end of the third electric push rod in parallel, and a gap is arranged between the igniter and the flame ion detector.
9. The device for testing the flash point capable of being continuously detected according to claim 1, wherein a rotating motor is arranged at the bottom of the detection rotary table, the rotating motor controls the detection rotary table to rotate, and the rotating motor is connected with the controller.
10. The apparatus according to claim 5 or 6, wherein a connecting plate for fixing the first electric push rod and the second electric push rod is disposed above the worktable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122346061.1U CN216433966U (en) | 2021-09-27 | 2021-09-27 | Flash point testing device capable of continuously detecting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122346061.1U CN216433966U (en) | 2021-09-27 | 2021-09-27 | Flash point testing device capable of continuously detecting |
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| CN216433966U true CN216433966U (en) | 2022-05-03 |
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| CN202122346061.1U Active CN216433966U (en) | 2021-09-27 | 2021-09-27 | Flash point testing device capable of continuously detecting |
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