Rapid balance cup closed-cup flash point tester

Abstract

The invention discloses a rapid balance cup closed-cup flash point tester, and relates to the technical field of flash point testers, the rapid balance cup closed-cup flash point tester comprises a tester main body, one side of the tester main body is provided with a display screen, the other side of the tester main body is provided with a lifting device, one end of the lifting device is fixedly connected with a cup cover, and the other end of the lifting device is fixedly connected with a handle. A cavity is formed in the detector main body, and a heating sleeve corresponding to the cup cover in position is mounted on the inner wall of the cavity. Firstly, the measuring cup is placed in the heating sleeve, then the cup cover is driven by the lifting device to move downwards to form sealing with the top of the measuring cup, then a proper amount of a to-be-detected sample is added into the measuring cup through the feeding pipe, the measuring cup is heated by the heating sleeve and is continuously ignited by the ignition device until a flash point is measured, and recording is performed. Then measurement waste liquid is guided out through the flow guide mechanism, and after the measurement cup is cleaned through the cleaning mechanism, the next detection can be carried out, so that the situation that the equipment needs to be manually cleaned due to multiple measurements is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flash point tester, in particular to a rapid equilibrium cup closed flash point tester. BACKGROUND

[0002] The closed flash point tester is an instrument for measuring the closed flash point of a sample, which is suitable for flash point detection of petroleum products, solvents, paints, lubricating oils and other industries. It is often tested by a closed container, which simulates the closed environment in actual storage or use. Its core use includes measuring the fire hazard of flammable liquids and guiding safe storage and transportation. Its working principle is mainly based on the principle of equilibrium vaporization. The liquid sample is gradually heated, and the surface vapor and air form a mixed gas. Then the electronic ignition gun introduces the flame periodically. When the concentration of the mixed gas reaches the flammable range, flash combustion occurs, and the corresponding temperature recorded by the instrument is the flash point.

[0003] Currently, at least two measurements are required for flash point detection of a sample. Especially in high-precision demand scenarios, such as high-risk flammable liquids (such as aviation kerosene, solvents), three measurements are often required to take the median value. After each measurement, the test cup needs to be taken out immediately, the remaining sample is poured out, the test cup is cleaned with petroleum ether or anhydrous ethanol, the inner wall and sealing ring are cleaned with a soft brush or cotton swab to avoid the influence of residues on the next test, the test cup is dried (or dried with compressed air) to ensure that there is no moisture. The cleaning process is very troublesome when measuring multiple times, and the test cup just tested and the internal sample temperature are relatively high, carrying more heat. Direct pouring will cause energy waste, and there is a certain safety hazard in the process of being taken out by the human body. Therefore, the present application proposes a rapid equilibrium cup closed flash point tester to solve the above problems. SUMMARY

[0004] The present application provides a rapid equilibrium cup closed flash point tester to solve the problems raised in the background.

[0005] To solve the above technical problems, the technical solution adopted by the present application is:

[0006] A rapid equilibrium cup closed flash point tester, comprising a detector main body, a display screen is arranged on one side of the detector main body, a lifting device is arranged on the other side of the detector main body, a cup cover is fixedly connected to one end of the lifting device, a cavity is formed in the detector main body, a heating sleeve corresponding to the position of the cup cover is installed on the inner wall of the cavity, a measuring cup is sleeved on the inner wall of the heating sleeve, the cup cover is movably connected to the top end inner wall of the measuring cup driven by the lifting device, a ignition device is arranged on the upper surface of the cup cover, and a feeding pipe is fixedly connected to the upper surface of the cup cover.

[0007] A cleaning mechanism for cleaning the inside of the measuring cup is installed on the cup cover.

[0008] The bottom of the measuring cup is connected with a flow guide mechanism for discharging high-temperature waste liquid and cleaning liquid.

[0009] The further improvement of the technical scheme of the present application is that the cleaning mechanism comprises a rotating shaft movably connected to the center of the cup cover, the rotating shaft extends to one end of the inside of the measuring cup, and a plurality of spraying rings are fixedly connected to the outer surface of the one end, a top pipe is fixedly connected to the upper surface of the other end of the rotating shaft outside the cup cover, and a gas pipe and a cleaning pipe are fixedly connected to one end of the top pipe, the cleaning pipe is used to pass in cleaning liquid, and the gas pipe is used to pass in gas for blow-drying the inside of the measuring cup.

[0010] The further improvement of the technical scheme of the present application is that one end of the cleaning pipe is fixedly connected with a liquid pump one, and the input end of the liquid pump one is in communication with an external cleaning liquid.

[0011] One end of the gas pipe is fixedly connected with a gas pump, and a valve one and a valve two are respectively arranged on the gas pipe and the cleaning pipe.

[0012] The further improvement of the technical scheme of the present application is that the flow guide mechanism comprises a bottom pipe fixedly connected to the bottom of the measuring cup, and a branch pipe one and a branch pipe two are fixedly connected to the bottom end of the bottom pipe.

[0013] The further improvement of the technical scheme of the present application is that the heating sleeve is hollow on one side and abuts against the measuring cup on the other side, and the measuring cup can be heated.

[0014] One end of the branch pipe one is fixedly connected with a liquid pump two, the output end of the liquid pump two is in communication with the hollow part of the heating sleeve through a backflow pipe, and a valve three is arranged on the branch pipe one.

[0015] One end of the branch pipe two is fixedly connected with a liquid pump three, the output end of the liquid pump three is connected with a waste liquid barrel, and a valve four is arranged on the branch pipe two close to the bottom pipe.

[0016] The further improvement of the technical scheme of the present application is that a temperature detection device is fixedly connected in the bottom pipe, and the opening and closing of the valve three and the valve four are adjusted and controlled according to different temperatures detected by the temperature detection device.

[0017] The further improvement of the technical scheme of the present application is that the hollow part of the heating sleeve is fixedly connected with a leading-out pipe, the leading-out pipe is in communication with the branch pipe two, and a valve five is arranged on the leading-out pipe.

[0018] The further improvement of the technical scheme of the present application is that the bottom of the measuring cup is conical.

[0019] Further improvement of the technical scheme of the present application is that one end of the rotating shaft inside the measuring cup is fixedly connected with the stirring rod, one end of the rotating shaft outside the cup cover is fixedly connected with the driven gear, the outer surface of the driven gear is meshingly connected with the driving gear, and the driving gear is movably connected to the cup cover.

[0020] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0021] 1. The present application provides a rapid balance cup closed flash point tester. First, the measuring cup is placed in the heating sleeve, then the cup cover is lowered by the lifting device to form a seal with the top of the measuring cup, then the appropriate amount of sample to be tested is added to the measuring cup through the feed pipe, the measuring cup is heated by the heating sleeve, and ignition is continuously performed by the ignition device until the flash point is measured, recorded, then the measuring waste liquid is discharged through the flow guide mechanism, and the measuring cup is cleaned by the cleaning mechanism after completion of the cleaning process, so that the next detection can be performed, avoiding the need for manual cleaning of the equipment after multiple measurements.

[0022] 2. The present application provides a rapid balance cup closed flash point tester. The flow guide mechanism can discharge the residual high-temperature detection liquid and the high-temperature cleaning liquid in the initial stage into the heating sleeve for heat preservation, avoiding excessive heat loss of the heating sleeve during cleaning of the measuring cup, the need for re-heating in the subsequent process, and the problem of large safety hazards caused by manual handling of the detection sample.

[0023] 3. The present application provides a rapid balance cup closed flash point tester. After one detection is completed, the waste liquid is first discharged through the flow guide mechanism, then the cleaning liquid is sprayed into the measuring cup through the cleaning pipe along the rotating shaft and the spraying ring, the inner wall of the measuring cup is fully cleaned, then the cleaning waste liquid is discharged through the flow guide mechanism, then air is introduced through the air pipe to dry the inside of the measuring cup, so as to ensure the accuracy of the sample amount during multiple experiments, and the spraying ring is uniformly arranged with multiple rotating shafts, which can basically cover all positions inside the measuring cup. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The figure is a structural schematic diagram of the present application;

[0025] Figure 2 The figure is a structural schematic diagram of the present application from another angle;

[0026] Figure 3 The figure is a structural schematic diagram of the cavity of the present application;

[0027] Figure 4 The figure is a structural schematic diagram of the cleaning mechanism of the present application;

[0028] Figure 5This is a schematic diagram of the flow guiding mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the connection between the heating sleeve and the flow guiding mechanism of the present invention.

[0030] In the diagram: 1. Main body of the detector; 2. Display screen; 3. Lifting device; 4. Cup lid; 5. Measuring cup; 6. Heating sleeve; 7. Cavity; 8. Ignition device; 9. Feed pipe; 10. Rotating shaft; 11. Stirring rod; 12. Spray ring; 13. Driven gear; 14. Driven gear; 15. Top pipe; 16. Air pipe; 17. Air pump; 18. Cleaning pipe; 19. Liquid pump one; 20. Valve one; 21. Valve two; 22. Bottom pipe; 23. Valve three; 24. Branch pipe one; 25. Liquid pump two; 26. Return pipe; 27. Valve four; 28. Branch pipe two; 29. ​​Outlet pipe; 30. Valve five; 31. Liquid pump three. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to embodiments:

[0032] Example:

[0033] like Figures 1-6 As shown, this invention provides a rapid equilibrium cup closed-cup flash point tester, including a tester body 1, a display screen 2 on one side of the tester body 1, and a lifting device 3 on the other side of the tester body 1. The tester body 1, the display screen 2, and the lifting device 3 are all prior art. A cup lid 4 is fixedly connected to one end of the lifting device 3. A cavity 7 is opened on the tester body 1. A heating sleeve 6 corresponding to the position of the cup lid 4 is installed on the inner wall of the cavity 7. A measuring cup 5 is fitted on the inner wall of the heating sleeve 6. The lifting device 3 drives the cup lid 4 to fall and movably connect to the inner wall of the top of the measuring cup 5. An ignition device 8 is provided on the upper surface of the cup lid 4. A feed pipe 9 is fixedly connected to the upper surface of the cup lid 4. A removable sealing plug is provided on the feed pipe 9 to facilitate adding samples to the measuring cup 5 during multiple tests. The cup lid 4 can be moved up and down by the lifting device 3.

[0034] The cup lid 4 is equipped with a cleaning mechanism for cleaning the inside of the measuring cup 5.

[0035] The bottom of the measuring cup 5 is connected to a flow guide mechanism for discharging high-temperature waste liquid and cleaning fluid.

[0036] Firstly, the measuring cup 5 is placed into the heating sleeve 6, and then the cup cover 4 is driven to move downward by the lifting device 3 to form a seal with the top of the measuring cup 5, and then the appropriate amount of sample to be detected is added to the measuring cup 5 through the feeding pipe 9, the measuring cup 5 is heated by the heating sleeve 6, and the ignition device 8 is ignited continuously until the flash point is measured and recorded, and then the measuring waste liquid is guided out through the flow guide mechanism, and the measuring cup 5 is cleaned through the cleaning mechanism after the cleaning process is completed, so that the next detection can be carried out, avoiding the need for manual cleaning of the equipment after each measurement, and the flow guide mechanism can guide the residual high-temperature detection liquid and the high-temperature cleaning liquid in the initial stage out of the heating sleeve 6 for heat preservation treatment, thereby avoiding the problem of heat loss of the heating sleeve 6 during cleaning of the measuring cup 5, and the problem of manual handling of the detection sample, which has a large safety hazard.

[0037] Further, the cleaning mechanism includes a rotating shaft 10 movably connected to the center of the cup cover 4, and a plurality of spray rings 12 are fixedly connected to the outer surface of one end of the rotating shaft 10 extending into the measuring cup 5, and a top pipe 15 is fixedly connected to the upper surface of the other end of the rotating shaft 10 located outside the cup cover 4, and a gas pipe 16 and a cleaning pipe 18 are fixedly connected to one end of the top pipe 15, the cleaning pipe 18 is used to introduce cleaning liquid, and the gas pipe 16 is used to introduce gas for blow-drying the inside of the measuring cup 5.

[0038] After one detection is completed, the waste liquid is first discharged through the flow guide mechanism, and then the cleaning liquid is sprayed into the measuring cup 5 through the cleaning pipe 18 along the rotating shaft 10 and the spray ring 12, and the inside wall of the measuring cup 5 is fully cleaned, and then the cleaning waste liquid is discharged through the flow guide mechanism, and then air is introduced through the gas pipe 16 to blow-dry the inside of the measuring cup 5, so as to ensure the accuracy of the sample amount during multiple experiments, and the spray ring 12 is uniformly arranged with a plurality of spray rings 12 along the rotating shaft 10, which can basically cover all positions inside the measuring cup 5.

[0039] Further, one end of the cleaning pipe 18 is fixedly connected with a liquid pump 19, the input end of the liquid pump 19 is in communication with the external cleaning liquid, and the liquid pump 19 is a prior art for controlling the introduction and discharge of the cleaning liquid, which can be pumped into the cleaning pipe 18 and introduced into the rotating shaft 10 through the top pipe 15 to clean the inside of the measuring cup 5;

[0040] One end of the gas pipe 16 is fixedly connected with a gas pump 17, the gas pipe 16 and the cleaning pipe 18 are respectively provided with a valve 20 and a valve 21.

[0041] When the overall cleaning is completed, the liquid pump 19 is closed to stop the delivery of the cleaning liquid, and then the air pump 17 can generate air which is introduced into the inside of the measuring cup 5 through the air pipe 16. A heating device can be arranged at the connection between the air pipe 16 and the air pump 17 to heat the air generated by the air pump 17, so that the effect of air drying the inside can be enhanced.

[0042] Further, the flow guide mechanism comprises a bottom pipe 22 fixedly connected to the bottom of the measuring cup 5, and the bottom pipe 22 is fixedly connected with a branch pipe 1 24 and a branch pipe 2 28 at the bottom end.

[0043] Further, the heating sleeve 6 is hollow at one side and abuts against the measuring cup 5 at the other side, so as to heat the measuring cup 5.

[0044] One end of the branch pipe 1 24 is fixedly connected with a liquid pump 2 25, the output end of the liquid pump 2 25 is communicated with the hollow part of the heating sleeve 6 through a return pipe 26, and the branch pipe 1 24 is provided with a valve 3 23.

[0045] One end of the branch pipe 2 28 is fixedly connected with a liquid pump 3 31, the output end of the liquid pump 3 31 is connected with a waste liquid barrel, and the branch pipe 2 28 is provided with a valve 4 27 near the bottom pipe 22.

[0046] The bottom pipe 22 is fixedly connected with a temperature detection device, which is a prior art. According to different temperatures detected by the temperature detection device, the opening and closing of the valve 3 23 and the valve 4 27 are adjusted and controlled.

[0047] The just detected waste liquid and the measuring cup 5 itself have a high temperature. When the cleaning liquid is used to clean the inside of the measuring cup 5 for the first time or for several times, heat exchange will occur between the cleaning liquid and the measuring cup 5, so that the temperature of the waste liquid is high. If the waste liquid is directly discharged and the measuring cup 5 is cleaned, a large amount of energy will be wasted. The waste liquid and the cleaning liquid flowing out of the measuring cup 5 flow out of the bottom pipe 22, and the temperature of the discharged liquid in the bottom pipe 22 is monitored in real time by the temperature detection device. When the temperature detection device detects that the temperature of the discharged liquid is at a high position, the valve 3 23 is opened, the valve 4 27 is closed, and the liquid pump 2 25 is started to pump the high-temperature waste liquid into the hollow part of the heating sleeve 6 through the return pipe 26, so as to preheat and keep warm the heating sleeve 6. In this way, the cleaning time of the measuring cup 5 is long, the high-temperature measuring cup 5 is cooled down quickly, and the problem that a large amount of energy is still consumed to heat the heating sleeve 6 itself is avoided.

[0048] When the temperature detection device detects that the temperature of the discharged liquid is at a low position, it indicates that the heat carried by the cleaning liquid is small. At this time, the valve 3 23 is closed, the liquid pump 3 31 is started, and the valve 4 27 is started to discharge the low-temperature cleaning liquid to the waste liquid barrel through the branch pipe 2 28.

[0049] When the high-temperature waste liquid temporarily stored in the hollow part of the heating sleeve 6 needs to be discharged, the valve five 30 can be opened, the valve four 27 can be closed, and the liquid pump three 31 can be started to extract the high-temperature waste liquid temporarily stored in the hollow part of the heating sleeve 6 to the waste liquid barrel.

[0050] Further, the hollow part of the heating sleeve 6 is fixedly connected with a leading-out pipe 29, the leading-out pipe 29 communicates with the branch pipe two 28, and the valve five 30 is arranged on the leading-out pipe 29.

[0051] Further, the bottom of the measuring cup 5 is conical, facilitating the gathering and flowing of the liquid.

[0052] Further, one end of the rotating shaft 10 located inside the measuring cup 5 is fixedly connected with the stirring rod 11, one end of the rotating shaft 10 located outside the cup cover 4 is fixedly connected with the driven gear 13, the outer surface of the driven gear 13 is meshingly connected with the driving gear 14, the driving gear 14 is movably connected to the cup cover 4, the cup cover 4 is provided with a driving structure for driving the driving gear 14 to rotate, including a motor and related accessories, and the rotating shaft 10 and the stirring rod 11 are driven to rotate through the driving structure, so that the sample in the measuring cup 5 is stirred to accelerate the flash point detection result.

Claims

1. A rapid equilibrium cup closed-cup flash point tester, comprising a tester body (1), wherein a display screen (2) is provided on one side of the tester body (1), and a lifting device (3) is provided on the other side of the tester body (1), characterized in that: One end of the lifting device (3) is fixedly connected to a cup lid (4). A cavity (7) is opened on the main body (1) of the detector. A heating sleeve (6) corresponding to the position of the cup lid (4) is installed on the inner wall of the cavity (7). A measuring cup (5) is fitted on the inner wall of the heating sleeve (6). The lifting device (3) drives the cup lid (4) to fall and is movably connected to the inner wall of the top of the measuring cup (5). An ignition device (8) is provided on the upper surface of the cup lid (4). A feed pipe (9) is fixedly connected to the upper surface of the cup lid (4). The cup lid (4) is equipped with a cleaning mechanism for cleaning the inside of the measuring cup (5); The bottom of the measuring cup (5) is connected to a guide mechanism for discharging high-temperature waste liquid and cleaning liquid.

2. The rapid equilibrium cup closed-cup flash point tester according to claim 1, characterized in that: The cleaning mechanism includes a rotating shaft (10) movably connected to the center of the cup lid (4). Multiple spray rings (12) are fixedly connected to the outer surface of one end of the rotating shaft (10) extending into the inside of the measuring cup (5). A top tube (15) is fixedly connected to the upper surface of the end of the rotating shaft (10) located outside the cup lid (4). An air tube (16) and a cleaning tube (18) are fixedly connected to one end of the top tube (15). The cleaning tube (18) is used to introduce cleaning liquid, and the air tube (16) is used to introduce gas to dry the inside of the measuring cup (5).

3. The rapid equilibrium cup closed-cup flash point tester according to claim 2, characterized in that: One end of the cleaning pipe (18) is fixedly connected to a liquid pump (19), and the input end of the liquid pump (19) is connected to an external cleaning liquid. One end of the air pipe (16) is fixedly connected to an air pump (17), and valve one (20) and valve two (21) are respectively installed on the air pipe (16) and the cleaning pipe (18).

4. The rapid equilibrium cup closed-cup flash point tester according to claim 1, characterized in that: The flow guiding mechanism includes a bottom tube (22) fixedly connected to the bottom of the measuring cup (5), and the bottom end of the bottom tube (22) is fixedly connected to a branch tube one (24) and a branch tube two (28).

5. The rapid equilibrium cup closed-cup flash point tester according to claim 4, characterized in that: The heating sleeve (6) is hollow on one side and abuts against the measuring cup (5) on the other side, so that the measuring cup (5) can be heated; One end of the first branch pipe (24) is fixedly connected to the second liquid pump (25). The output end of the second liquid pump (25) is connected to the hollow part of the heating sleeve (6) through the return pipe (26). The first branch pipe (24) is equipped with the third valve (23). One end of the second branch pipe (28) is fixedly connected to the third liquid pump (31), the output end of the third liquid pump (31) is connected to the waste liquid tank, and the second branch pipe (28) is equipped with a fourth valve (27) near the bottom pipe (22).

6. The rapid equilibrium cup closed-cup flash point tester according to claim 4, characterized in that: A temperature detection device is fixedly connected in the bottom pipe (22). The opening and closing of control valves three (23) and four (27) are adjusted according to the different temperatures detected by the temperature detection device.

7. The rapid equilibrium cup closed-cup flash point tester according to claim 4, characterized in that: The hollow part of the heating sleeve (6) is fixedly connected to the outlet pipe (29), the outlet pipe (29) is connected to the second branch pipe (28), and the outlet pipe (29) is equipped with a valve five (30).

8. The rapid equilibrium cup closed-cup flash point tester according to claim 1, characterized in that: The bottom of the measuring cup (5) is conical.

9. A rapid equilibrium cup closed-cup flash point tester according to claim 2, characterized in that: The rotating shaft (10) is fixedly connected to a stirring rod (11) at one end inside the measuring cup (5), and a driven gear (13) is fixedly connected to the other end of the rotating shaft (10) outside the cup lid (4). A driving gear (14) is meshed on the outer surface of the driven gear (13), and the driving gear (14) is movably connected to the cup lid (4).

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