Flash point instrument

Abstract

The utility model relates to the technical field of flash point testing, in particular to a flash point instrument which comprises a temperature-adjustable sample storage container, a volatilization cover plate and a reciprocating driving assembly, the sample storage container is provided with a volatilization outlet; the volatilization cover plate is slidably mounted on the sample storage container, and the movement track of the volatilization cover plate covers the volatilization outlet; the reciprocating driving assembly comprises a driving part, a reversible crankshaft transmission part and a swing arm part; the driving piece is in transmission connection with the crankshaft transmission piece; the crankshaft transmission part is in transmission connection with the swing arm part and used for making the swing arm part swing in the circumferential direction. The driving part drives the crankshaft transmission part in the same direction continuously, a volatilization cover plate is arranged on the circumferential swing track of the swing arm part, and the circumferential swing of the swing arm part is used for enabling the volatilization cover plate to reciprocate on the volatilization outlet so as to open or close the volatilization outlet; therefore, the whole driving and transmission process is continuous, and the sliding and sweeping continuity is good.

Description

Technical Field

[0001] The utility model relates to the technical field of flash point testing, in particular to a flash point instrument. Background Art

[0002] Flash point is the lowest temperature at which the test flame causes the sample vapor to ignite and the flame to spread to the surface of the liquid under specified test conditions. The flash point test is to use a flash point tester to determine the flash point of paints (including water-based paints), varnishes, paint bases, adhesives, solvents, petroleum and related products, and fatty acid methyl esters with closed cup flash points in the range of -30℃ to 100℃.

[0003] In the prior art, the closed cup flash point test requires that the substance to be tested be heated for a preset time to form steam. Then the flash point tester uses a screw motor to slide the igniter or the cup cover back and forth, so that the volatile substance to be tested contacts the fire and flashes. However, the screw motor needs to reverse during the reciprocating movement, resulting in poor continuity of the back and forth sliding. The time frequency of the back and forth sliding is difficult to control well, and the flash point test cannot be performed according to the preset time.

[0004] Therefore, it is of practical value to study a flash point instrument that can measure the flash point according to the preset time. Utility Model Content

[0005] The utility model aims to provide a flash point instrument to solve the problem that the existing flash point instrument cannot preset the time for flash point measurement.

[0006] In order to solve the above technical problems, the utility model provides a flash point instrument, comprising a sample storage container with adjustable temperature, a volatilization cover and a reciprocating drive assembly; the sample storage container is provided with a volatilization outlet; the volatilization cover can be slidably installed on the sample storage container, and the moving trajectory of the volatilization cover covers the volatilization outlet; the reciprocating drive assembly comprises a driving member, a reversible crankshaft transmission member and a swing arm member; the driving member is connected to the crankshaft transmission member; the crankshaft transmission member is connected to the swing arm member, and the crankshaft transmission member is used to make the swing arm member swing circumferentially; the volatilization cover is provided on the circumferential swinging trajectory of the swing arm member, and the circumferential swinging of the swing arm member is used to make the volatilization cover reciprocate on the volatilization outlet to open or close the volatilization outlet.

[0007] In one of the embodiments, the swing arm member includes a swing arm shaft and a swing arm; the swing arm shaft is transmission-connected to the crankshaft transmission member, the swing arm shaft is fixedly connected to the swing arm, and the volatile cover plate is provided on the circumferential swing trajectory of the swing arm.

[0008] In one of the embodiments, an abutment pin body is provided on the swing arm; a sliding plate is fixedly connected to the volatile cover plate, and the sliding plate is provided on the circumferential swing trajectory of the abutment pin body.

[0009] In one embodiment, the circumferential swing trajectory of the abutment pin body includes a first pushing trajectory and a second pushing trajectory; the first pushing trajectory is a trajectory pushing away from the volatile outlet, and the sliding plate is arranged on the first pushing trajectory; the second pushing trajectory is a trajectory pushing in the direction adjacent to the volatile outlet, and the sliding plate is arranged on the second pushing trajectory.

[0010] In one embodiment, a first dead point and a second dead point are provided on the reciprocating movement trajectory of the sliding plate; the first dead point is adjacent to the volatilization outlet, and the second dead point is far away from the volatilization outlet; when the sliding plate reaches the first dead point, along the length direction of the sliding plate, the side wall of the sliding plate abuts against the abutment pin body; when the sliding plate reaches the second dead point, along the thickness direction of the sliding plate, the side wall of the sliding plate is provided on the circumferential swinging trajectory of the abutment pin body.

[0011] In one of the embodiments, an abutment bearing is disposed on the outer sleeve of the abutment pin body, and the abutment bearing is used to abut against the side wall of the rowing plate.

[0012] In one embodiment, the crankshaft transmission member includes a turntable and a connecting arm; the turntable is transmission-connected to the driving member, and a connecting pin is provided on the turntable; the connecting arm is transmission-connected to the swing arm shaft, and a connecting slide is provided on the connecting arm, and the connecting pin is provided in the connecting slide, and the connecting slide can be slidably installed on the connecting pin.

[0013] In one embodiment, the flash point instrument also includes a sample storage mounting frame for mounting a sample storage container; the sample storage mounting frame is provided with a mounting through hole along the thickness direction of the sample storage mounting frame, the swing arm shaft is installed in the mounting through hole, the swing arm is installed at one end of the swing arm shaft adjacent to the volatilization outlet, and the connecting arm is installed at the other end of the swing arm shaft; the swing arm member also includes a rocker arm spring; the rocker arm spring is sleeved outside the swing arm shaft, and the rocker arm spring is compressed between the connecting arm and the sample storage mounting frame.

[0014] In one embodiment, a slide rail and a fixed guide column are provided on the surface of the sample storage container; the volatile cover plate can be slidably installed on the slide rail, and the volatile cover plate is provided with a sliding groove, and the length direction of the sliding groove is the same as the length direction of the slide rail; the fixed guide column is installed in the sliding groove.

[0015] In one embodiment, the sample storage container includes a water-cooled heat sink, a semiconductor refrigeration sheet and a sample cup; the semiconductor refrigeration sheet is mounted in abutment with the water-cooled heat sink, and the sample cup is mounted in abutment with the semiconductor refrigeration sheet; the temperature control surface of the semiconductor refrigeration sheet is arranged adjacent to one side of the sample cup, and the non-temperature control surface of the semiconductor refrigeration sheet is arranged adjacent to one side of the water-cooled heat sink.

[0016] The beneficial effects of the utility model are as follows:

[0017] Since in the present scheme the driving member is connected to the crankshaft transmission member; the crankshaft transmission member is connected to the swing arm member, the crankshaft transmission member is used to make the swing arm member swing circumferentially; a volatile cover plate is provided on the circumferential swinging trajectory of the swing arm member, the circumferential swinging of the swing arm member is used to make the volatile cover plate reciprocate on the volatile outlet to open or close the volatile outlet, so when it is used, the swing arm member can swing circumferentially under the drive of the crankshaft transmission member, thereby driving the volatile cover plate on the swinging trajectory to move back and forth, since the driving member is continuously driven in the same direction, the crankshaft transmission member will reverse during the rotation, so the entire drive transmission process is continuous, the sliding continuity is good, and the situation of interrupting the sliding continuity such as the need to reverse the motor output direction as in the prior art is avoided, the time frequency of the back and forth sliding is well controlled, and the flash point test can be performed according to the preset time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure provided by the preferred embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure (chassis components omitted) provided by the preferred embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the sample storage container and the volatilization cover provided in the preferred embodiment of the utility model. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the structure of the sample storage container and the volatilization cover provided in the preferred embodiment of the utility model. Figure 2 ;

[0023] Figure 5It is a schematic cross-sectional structure diagram of a sample storage container and a volatilization cover provided in a preferred embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the reciprocating drive assembly structure provided by the preferred embodiment of the utility model Figure 1 ;

[0025] Figure 7 This is a schematic diagram of the reciprocating drive assembly structure provided by the preferred embodiment of the utility model Figure 2 ;

[0026] Figure 8 This is a partial structural diagram of the reciprocating drive assembly provided in the preferred embodiment of the utility model. Figure 1 ;

[0027] Fig. 9 This is a partial structural diagram of the reciprocating drive assembly provided in the preferred embodiment of the utility model. Figure 2 .

[0028] The reference numerals are as follows:

[0029] 1. Sample storage container; 10. Water-cooled heat sink; 11. Semiconductor refrigeration chip; 12. Sample cup; 120. Evaporation outlet; 121. Slide rail; 122. Fixed guide column; 123. Sample injection port;

[0030] 2. Volatile cover plate; 20. Sliding slot; 21. Scratching plate;

[0031] 3. Reciprocating drive assembly; 30. Driving member; 31. Crankshaft transmission member; 310. Turntable; 3100. Notch; 3101. Connecting pin body; 311. Connecting arm; 3110. Connecting slide; 32. Swing arm member; 320. Swing arm shaft; 321. Swing arm; 3210. Abutting pin body; 322. Swing arm spring; 33. Slot-type photoelectric;

[0032] 4. Sample storage mounting rack;

[0033] 5. Temperature and flow sensor components;

[0034] 6. Ignition head; 60. Combustible gas supply assembly; 61. Combustible gas flow regulating valve;

[0035] 7. Control device; 70. Human-machine interface touch screen assembly; 71. Control circuit board assembly; 72. Switching power supply;

[0036] 8. Chassis components. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] In order to solve the above problems, this solution proposes a flash point instrument, please refer to Figures 1 to 9 , comprising a sample storage container 1 with adjustable temperature, a volatilization cover 2 and a reciprocating drive assembly 3; the sample storage container 1 is provided with a volatilization outlet 120; the volatilization cover 2 is slidably mounted on the sample storage container 1, and the moving track of the volatilization cover 2 covers the volatilization outlet 120; the reciprocating drive assembly 3 comprises a driving member 30, a reversible crankshaft transmission member 31 and a swing arm member 32; the driving member 30 is connected to the crankshaft transmission member 31 in a transmission manner; the crankshaft transmission member 31 is connected to the swing arm member 32 in a transmission manner, and the crankshaft transmission member 31 is used to make the swing arm member 32 swing circumferentially; the swing arm member 32 is circumferentially A volatilization cover plate 2 is provided on the swinging trajectory, and the circumferential swing of the swing arm 32 is used to make the volatilization cover plate 2 reciprocate on the volatilization outlet 120 to open or close the volatilization outlet 120. When in use, the sample to be tested is stored in the sample storage container 1, and the sample forms steam after being heated. The reciprocating drive component 3 drives the volatilization cover plate 2 to reciprocate on the volatilization outlet 120 to open or close the volatilization outlet 120, so that the sample vapor can contact the ignition head 6 of the flash point meter to form a flash point, and the flash point detection is performed through the flash point detection sensor of the flash point meter.

[0039] After adopting this setting method, compared with the prior art using a screw drive method, the screw drive requires the motor output direction to be reversed, which causes the reciprocating motion to be easily interrupted, while the driving member 30 of this solution continues to rotate in the same direction to drive the volatile cover 2 to reciprocate, so the entire driving, transmission, swinging and reciprocating process is continuous, the volatile cover 2 has good sliding continuity, and the control of the time frequency is also good. The flash point test can be performed according to the preset time, avoiding the situation where the motor output direction needs to be reversed as in the prior art to interrupt the sliding continuity, and avoiding the problem that the flash point test cannot be performed according to the preset time due to improper control of the time frequency of the back and forth sliding.

[0040] Regarding the above-mentioned sample storage container 1, as Figures 3 to 5As shown, the sample storage container 1 includes a water-cooled heat sink 10, a semiconductor cooling sheet 11 and a sample cup 12. The sample cup 12 is provided with a sample injection port 123 and a volatilization outlet 120 for sample injection. When the water-cooled heat sink 10 is installed on the pressure plate, a heat-insulating silicone pad is provided between the two. The semiconductor cooling sheet 11 is abutted against the water-cooled heat sink 10. Thermal conductive silicone grease is coated between the water-cooled heat sink 10 and the semiconductor cooling sheet 11. The sample cup 12 is abutted against the semiconductor cooling sheet 11. Thermal conductive silicone grease is also coated between the semiconductor cooling sheet 11 and the sample cup 12. The temperature control surface of the semiconductor cooling sheet 11 is arranged adjacent to one side of the sample cup 12. The semiconductor cooling sheet 11 is arranged adjacent to one side of the sample cup 12. The non-temperature control surface is arranged adjacent to the side of the water-cooled heat sink 10. After adopting this setting, the sample cup 12 is heated by the semiconductor refrigeration sheet 11, and the sample cup 12 heats the test liquid in the cup, so that the test liquid is heated to generate steam on the surface of the liquid. When the sample cup 12 is automatically heated to a certain temperature and kept at a constant temperature for a set time, an open flame is used to ignite the steam. If it is not ignited, the equipment will increase a set step temperature for the sample cup 12, and keep the temperature constant for a set time, and use an open flame to ignite the steam. If the steam is ignited at this time and flashes, then the temperature detected and displayed by the flash point detection sensor at this time is the flash point value we need.

[0041] For the sample cup 12, if Figure 5 As shown, a sealing ring is also installed between the sample cup 12 and the volatilization cover plate 2.

[0042] For the semiconductor cooling sheet 11, Figures 3 to 5 As shown, the sample cup 12 is heated by a semiconductor refrigeration sheet 11, which is a square flat sheet with a wire. Direct current is connected to the wire. One of the two surfaces of the flat sheet is for cooling and the other is for heating. If the power line is connected in reverse, the cooling and heating surfaces are opposite. By utilizing this feature, we can switch the positive and negative poles of the wire of the semiconductor refrigeration sheet 11 to control the heating or cooling of the sample cup 12. For example, when the semiconductor refrigeration sheet 11 is working, the temperature of the non-working surface must be controlled within a certain range. Therefore, according to the use of the equipment, we add a water-cooled heat sink 10 to the non-working surface of the semiconductor refrigeration sheet 11, and control the temperature of the non-working surface by continuously injecting tap water at room temperature to ensure that the refrigeration sheet can work normally.

[0043] like Figure 6 As shown, the flash point instrument also includes a sample storage mounting frame 4. Along the thickness direction of the sample storage mounting frame 4, the sample storage mounting frame 4 is provided with a sample storage through hole and an installation through hole. The sample storage container 1 is installed in the sample storage through hole, and the swing arm member 32 is penetrated in the installation through hole.

[0044] The sample storage mounting frame 4 is also provided with an explosion-proof component, which includes an explosion-proof cover and an explosion-proof buckle. The explosion-proof cover is installed on the surface of the sample cup 12 adjacent to the volatilization outlet 120. A hole is reserved on the explosion-proof cover for connecting the sample injection port 123 and the volatilization outlet 120. The explosion-proof buckle is installed on the sample cup 12, and is used to buckle the explosion-proof cover to achieve an explosion-proof function.

[0045] Among them, the structural setting of explosion-proof parts can refer to the national standard requirements of flash point determination-rapid equilibrium closed cup method (GB5208-2008).

[0046] like Figure 2 As shown, the semiconductor refrigeration plate 11 is also connected to a temperature flow sensor component 5. The main function of the temperature flow sensor component 5 is to provide the equipment control system with the temperature and flow data of the tap water passing through the water-cooled heat sink 10. The flow calculation principle is that the liquid flows through the sensor body to drive the impeller inside the body to rotate. A strong magnet is fixed on the impeller, and the strong magnet performs a circular motion in front of the Hall sensor. Each time the strong magnet passes through the Hall sensor, the Hall sensor sends out a pulse. If the water flow is small, the impeller speed is slow, and the number of pulses sent by the Hall sensor within the sampling time is lower than the set value, the equipment cannot be used normally, and relevant information is prompted on the touch screen.

[0047] Regarding the above-mentioned reciprocating drive assembly 3, as Figures 6 to 9 As shown, the reciprocating drive assembly 3 includes a drive member 30, a crankshaft transmission member 31 and a swing arm member 32. The drive member 30 is connected to the crankshaft transmission member 31, and the crankshaft transmission member 31 is connected to the swing arm member 32. When used, compared with the linear drive mechanism of the prior art, the drive of the drive member 30, the crankshaft transmission member 31 and the swing arm member 32 is more continuous and can better control the reciprocating frequency.

[0048] For the driving member 30, if Figures 6 to 9 As shown, the driving member 30 is preferably a DC reduction motor.

[0049] For the crankshaft transmission member 31, Figures 6 to 9 As shown, the crankshaft transmission member 31 includes a turntable 310 and a connecting arm 311; the turntable 310 is connected to the driving member 30, and a connecting pin 3101 is provided on the turntable 310; the connecting arm 311 is connected to the swing arm shaft 320, and a connecting slide 3110 is provided on the connecting arm 311, and a connecting pin 3101 is provided in the connecting slide 3110. The connecting slide 3110 can be slidably installed on the connecting pin 3101. When in use, the rotation of the turntable 310 will drive the connecting arm 311 to reverse rotation, thereby driving the swing arm member 32 to swing.

[0050] For the swing arm 32, if Figures 6 to 9As shown, the swing arm member 32 includes a swing arm shaft 320 and a swing arm 321; the swing arm shaft 320 is transmission-connected to the crankshaft transmission member 31, the swing arm shaft 320 is fixedly connected to the swing arm 321, a volatilization cover plate 2 is provided on the circumferential swing trajectory of the swing arm, and an abutment pin body 3210 for pushing the volatilization cover plate 2 to move is provided on the swing arm 321. When in use, the swing arm 321 drives the abutment pin body 3210 to swing, thereby driving the volatilization cover plate 2 to move.

[0051] Furthermore, the swing arm member 32 further includes a swing arm spring 322, such as Figures 6 to 9 As shown, the swing arm spring 322 is sleeved outside the swing arm shaft 320 , and the swing arm spring 322 is compressed between the connecting arm 311 and the sample storage mounting frame 4 .

[0052] Furthermore, the reciprocating drive assembly 3 also includes a slot-type photoelectric 33; Figures 6 to 9 As shown, the turntable 310 is provided with a notch 3100; the slot-shaped photoelectric device 33 is aligned with the notch 3100. When in use, the slot-shaped photoelectric device 33 can detect the rotation speed of the turntable 310, thereby facilitating the subsequent rotation speed frequency regulation.

[0053] Regarding the above-mentioned volatilization cover plate 2, as Figure 3 and Figure 4 As shown, the volatile cover 2 can be slidably installed on the sample storage container 1, and the moving track of the volatile cover 2 covers the volatile outlet 120. A scratch plate 21 is fixedly connected to the volatile cover 2, and the scratch plate 21 is arranged on the circumferential swing track of the abutment pin body 3210. When used, the abutment pin body 3210 swings, and the scratch plate 21 reciprocates after being rubbed by the abutment pin body 3210, thereby intermittently opening or closing the volatile outlet 120, so that the evaporated gas flashes through the volatile outlet 120 and the ignition head 6, so as to achieve the purpose of flash point testing.

[0054] The structure of the volatilization cover plate 2 may refer to the national standard requirements for the flash point determination-rapid equilibrium closed cup method (GB5208-2008).

[0055] Regarding the circumferential swing trajectory of the abutment pin body 3210, the circumferential swing trajectory of the abutment pin body 3210 includes a first pushing trajectory and a second pushing trajectory; the first pushing trajectory is a trajectory pushing in a direction away from the volatile outlet 120, and the sliding plate 21 is arranged on the first pushing trajectory; the second pushing trajectory is a trajectory pushing in a direction adjacent to the volatile outlet 120, and the sliding plate 21 is arranged on the second pushing trajectory. During application, when the abutment pin body 3210 moves on the first pushing trajectory, the abutment pin body 3210 can push the sliding plate 21 to move in a direction away from the volatile outlet 120, thereby opening or closing the volatile outlet 120; when the abutment pin body 3210 moves on the second pushing trajectory, the abutment pin body 3210 can push the sliding plate 21 to move in a direction adjacent to the volatile outlet 120, thereby opening or closing the volatile outlet 120.

[0056] Specifically, a first dead point and a second dead point are provided on the reciprocating movement trajectory of the rowing plate 21; the first dead point is adjacent to the volatilization outlet 120, and the second dead point is away from the volatilization outlet 120; when the rowing plate 21 reaches the first dead point, along the length direction of the rowing plate 21, the side wall of the rowing plate 21 abuts against the abutment pin body 3210; when the rowing plate 21 reaches the second dead point, along the thickness direction of the rowing plate 21, the side wall of the rowing plate 21 is arranged on the circumferential swinging trajectory of the abutment pin body 3210. When in use, for the rowing plate 21 at the first dead point, the abutment pin body 3210 utilizes the friction force with the side wall on the thickness side of the rowing plate 21 to push the rowing plate 21 to move away from the volatilization outlet 120. For the rowing plate 21 at the second dead point, the abutment pin body 3210 can push the side wall on the length side of the rowing plate 21 to move toward the direction adjacent to the volatilization outlet 120.

[0057] Among them, the first dead point can be Figure 4 As shown, when the paddle 21 is in Figure 4 The first dead point is the position of Figure 3 As shown, when the paddle 21 is in Figure 3 The second dead point is when the

[0058] Furthermore, in order to reduce the wear of the abutment pin 3210, as Figure 3 and Figure 4 As shown, the abutment pin body 3210 is provided with an abutment bearing on its outer sleeve, and the abutment bearing is used to abut against the side wall of the row plate 21 . When in use, the abutment bearing can contact with the row plate 21 to reduce the loss of the abutment pin body 3210 .

[0059] Furthermore, in order to achieve the fixed guidance of the volatilization cover plate 2, as Figure 3As shown, the surface of the sample storage container 1 is provided with a slide rail 121 and a fixed guide column 122; the volatile cover 2 is slidably installed on the slide rail 121, and the volatile cover 2 is provided with a sliding groove 20, and the length direction of the sliding groove 20 is the same as the length direction of the slide rail 121; the fixed guide column 122 is installed in the sliding groove 20. When in use, the reciprocating movement guide and movement formation of the volatile cover 2 are limited, so that the volatile cover 2 can avoid excessive movement.

[0060] like Figure 3 As shown, the flash point instrument also includes an ignition head 6, which is arranged outside the volatilization outlet 120. The ignition head 6 is connected to the combustible gas supply component 60. The main function of the combustible gas supply component 60 is to provide the ignition head 6 with combustible gas with constant pressure. Combined with the flow regulating valve, the flame diameter size requirement of the ignition head 6 can be met as required by the standard.

[0061] The structural arrangement of the ignition head 6 may refer to the national standard requirements for the flash point determination - rapid equilibrium closed cup method (GB5208-2008).

[0062] It should be understood that the combustible gas flow regulating valve 61 is a mechanical micro-regulating valve, which, in combination with the combustible gas pressure regulating valve, can accurately control the size of the gas flow, thereby achieving accurate adjustment of the flame size of the ignition head 6 .

[0063] like Figure 1 As shown, the flash point instrument further comprises a control device 7 , which comprises a human-machine interface touch screen assembly 70 , a control circuit board assembly 71 and a switch power supply 72 .

[0064] For the human-machine interface touch screen assembly 70, the main function of the human-machine interface touch screen assembly is to allow the operator to easily access process data and input commands, thereby improving the efficiency of the controlled process. By presenting data in a clear and concise manner, the operator can make more informed decisions and take timely actions when necessary. At the same time, safety can be improved by displaying alarms and other important information to the operator. This enables the operator to take timely actions to solve potential problems before they become serious. Compared with the method of using a membrane keyboard combined with a display screen, the use of a human-machine interface touch screen makes the appearance of the device more concise and generous, the display of various data is more intuitive, and problem handling is faster.

[0065] For the control circuit board assembly 71, the main functions of the control circuit board assembly are to receive data provided by all sensors of the device, store data input by the touch screen, analyze and calculate all data, and control the actuators.

[0066] For the switching power supply 72, the switching power supply used by the switching power supply is an AC-DC power converter, which is used to convert the AC power of the mains into the stable DC power required by the equipment, and provide it to various electrical components in the equipment. A good switching power supply can ensure the long-term stable operation of the equipment.

[0067] like Figure 1 As shown, the flash point instrument includes a chassis assembly 8, which surrounds the sample storage container 1, the reciprocating drive assembly 3, the control circuit board assembly and the switching power supply to achieve the purpose of protection, wherein the sample storage container 1, the volatile cover plate 2, the ignition head 6, and the human-machine interface touch screen assembly are installed on the surface of the chassis assembly, the combustible gas supply assembly 60 extends out of the chassis shell to achieve gas regulation, the sample storage container 1 extends out of the chassis shell for sample supply, and the water cooling head extends out of the chassis shell for water circulation.

[0068] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A flash point instrument, characterized in that: It includes a sample storage container with adjustable temperature, a volatilization cover plate and a reciprocating drive assembly; The sample storage container is provided with a volatilization outlet; The volatilization cover plate is slidably mounted on the sample storage container, and the moving track of the volatilization cover plate covers the volatilization outlet; The reciprocating drive assembly includes a driving member, a reversible crankshaft transmission member and a swing arm member; The driving member is drivingly connected to the crankshaft transmission member; The crankshaft transmission member is in transmission connection with the swing arm member, and the crankshaft transmission member is used to make the swing arm member swing circumferentially; The volatile cover plate is arranged on the circumferential swing track of the swing arm member, and the circumferential swing of the swing arm member is used to make the volatile cover plate reciprocate on the volatile outlet to open or close the volatile outlet.

2. A flash point instrument according to claim 1, characterized in that: The swing arm member comprises a swing arm shaft and a swing arm; The swing arm shaft is transmission-connected to the crankshaft transmission member, the swing arm shaft is fixedly connected to the swing arm, and the volatilization cover plate is arranged on the circumferential swing trajectory of the swing arm.

3. A flash point instrument according to claim 2, characterized in that, The swing arm is provided with an abutment pin body; A sliding plate is fixedly connected to the volatilization cover plate, and the sliding plate is arranged on the circumferential swing track of the abutting pin body.

4. A flash point instrument according to claim 3, characterized in that: The circumferential swing trajectory of the abutment pin body includes a first pushing trajectory and a second pushing trajectory; The first pushing track is a track that pushes away from the volatilization outlet, and the sliding plate is arranged on the first pushing track; The second pushing track is a track pushed in a direction adjacent to the volatilization outlet, and the sliding plate is arranged on the second pushing track.

5. A flash point instrument according to claim 4, characterized in that: The reciprocating movement track of the paddle is provided with a first dead point and a second dead point; The first dead point is adjacent to the volatilization outlet, and the second dead point is far from the volatilization outlet; When the rowing plate reaches the first dead point, along the length direction of the rowing plate, the side wall of the rowing plate abuts against the abutment pin body; When the sliding plate reaches the second dead point, along the thickness direction of the sliding plate, the side wall of the sliding plate is arranged on the circumferential swing trajectory of the abutment pin body.

6. A flash point instrument according to claim 4, characterized in that: An abutment bearing is provided on the outer sleeve of the abutment pin body, and the abutment bearing is used for abutting against the side wall of the rowing plate.

7. A flash point instrument according to claim 2, characterized in that: The crankshaft transmission member includes a rotating disk and a connecting arm; The rotating disk is transmission-connected with the driving member, and a connecting pin is provided on the rotating disk; The connecting arm is transmission-connected to the swing arm shaft, a connecting slide is provided on the connecting arm, the connecting slide is provided with the connecting pin body, and the connecting slide can be slidably mounted on the connecting pin body.

8. A flash point instrument according to claim 7, characterized in that: The flash point apparatus also includes a sample storage mounting frame for mounting a sample storage container; Along the thickness direction of the sample storage mounting frame, the sample storage mounting frame is provided with a mounting through hole, the swing arm shaft is mounted in the mounting through hole, the swing arm is mounted at one end of the swing arm shaft adjacent to the volatilization outlet, and the connecting arm is mounted at the other end of the swing arm shaft; The swing arm member also includes a rocker arm spring; The rocker arm spring is sleeved outside the swing arm shaft, and the rocker arm spring is compressed between the connecting arm and the sample storage mounting frame.

9. A flash point instrument according to claim 1, characterized in that: The surface of the sample storage container is provided with a slide rail and a fixed guide column; The volatile cover plate is slidably mounted on the slide rail, and the volatile cover plate is provided with a sliding through slot, and the length direction of the sliding through slot is the same as the length direction of the slide rail; The fixed guide column is installed in the sliding groove.

10. A flash point tester according to claim 1, characterized in that: The sample storage container includes a water-cooled heat sink, a semiconductor refrigeration sheet and a sample cup; The semiconductor refrigeration sheet is mounted against the water-cooled heat sink, and the sample cup is mounted against the semiconductor refrigeration sheet; The temperature control surface of the semiconductor refrigeration plate is arranged adjacent to one side of the sample cup, and the non-temperature control surface of the semiconductor refrigeration plate is arranged adjacent to one side of the water-cooled heat sink.

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