阅读说明：本技术 一种沥青闪点检测装置及其检测方法 (Asphalt flash point detection device and detection method thereof ) 是由 刘自力 梁圆圆 王娟莉 于 2021-06-16 设计创作，主要内容包括：本发明公开了一种沥青闪点检测装置及其检测方法,包括壳体,壳体内设置有加热炉,加热炉放置有开口杯,开口杯的上方设置有温度计和点火器,加热炉下侧设置有控制加热炉靠近温度计和点火器的升降装置,点火器的另一端固定于一横杆,壳体中设置有驱动横杆往复横移的驱动装置。配备自动移动的点火器,避免人工移动点火器,驱动装置启动后,通过驱动横杆使点火杆同步往复横移,点火器端部的出火端在开口杯上侧来回移动,而工作人员可以集中注意力在闪点时刻和温度计读数,当出现闪点后,立刻记录温度计的温度值。(The invention discloses an asphalt flash point detection device and a detection method thereof, and the asphalt flash point detection device comprises a shell, wherein a heating furnace is arranged in the shell, an opening cup is arranged in the heating furnace, a thermometer and an igniter are arranged above the opening cup, a lifting device for controlling the heating furnace to be close to the thermometer and the igniter is arranged at the lower side of the heating furnace, the other end of the igniter is fixed on a cross rod, and a driving device for driving the cross rod to move transversely in a reciprocating manner is arranged in the shell. Be equipped with automatic movement's some firearm, avoid artifical removal some firearm, after drive arrangement started, made the synchronous reciprocal sideslip of ignition rod through the drive horizontal pole, the play fire end of some firearm tip at opening cup upside round trip movement, and the staff can focus on attention at flash point moment and thermometer reading, after the flash point appears, records the temperature value of thermometer at once.)

1. The utility model provides an asphalt flash point detection device which characterized in that:

the heating device comprises a shell (1), wherein an observation window (10) is arranged on the front side of the shell (1), a heating furnace (12) is arranged in the shell (1), an opening cup (13) is placed on the heating furnace (12), a thermometer (6) and an igniter (5) are arranged above the opening cup (13), a lifting device (2) for controlling the heating furnace (12) to be close to the thermometer (6) and the igniter (5) is arranged on the lower side of the heating furnace (12), an air extracting device (4) is communicated with the upper side of the shell (1), and an air inlet hole (11) is formed in the lower side of the shell (1);

the fire outlet end of the igniter (5) is positioned above the opening cup (13), the other end of the igniter (5) is fixed on a cross rod (31), a rod sleeve (32) sleeved with the cross rod (31) is arranged at the position, corresponding to the cross rod (31), of the shell (1), and a driving device (3) for driving the cross rod (31) to move transversely in a reciprocating mode is arranged in the shell (1).

2. The asphalt flash point detection device according to claim 1, characterized in that: horizontal pole (31) are provided with rack portion (33), rack portion (33) are provided with fan-shaped fluted disc (34), fan-shaped fluted disc (34) meshing rack portion (33) and transmission cooperation, fan-shaped fluted disc (34) central connection has bar axle groove (35), be provided with motor (38) in casing (1), the output of motor (38) is provided with carousel (36), carousel (36) eccentric position is provided with eccentric shaft (37), install in bar axle groove (35) and drive cooperation eccentric shaft (37).

3. The asphalt flash point detection device according to claim 1, characterized in that: the lifting device (2) comprises a screw rod (21), the upper end of the screw rod (21) is rotatably connected to the lower side of the heating furnace (12), and the lower end of the screw rod (21) penetrates through the shell (1) and is connected with a rotating rod (25).

4. The asphalt flash point detection device according to claim 3, characterized in that: and a telescopic rod (22) is arranged between the lower side of the heating furnace (12) and the bottom of the shell (1).

5. The asphalt flash point detection device according to claim 1, characterized in that: a partition plate (23) is arranged in the shell (1), and a limiting convex ring (24) is arranged on the side of the lower side of the heating furnace (12).

6. The asphalt flash point detection device according to claim 1, characterized in that: the temperature sensing rod of the thermometer (6) penetrates through the upper side wall of the shell (1) and is matched with the upper side wall in a telescopic mode, and the thermometer (6) is provided with a limiting piece (61) corresponding to the upper side wall of the shell (1).

7. The asphalt flash point detection device according to claim 1, characterized in that: the air extraction device (4) comprises a blower (41) and a filter (42).

8. The asphalt flash point detection device according to claim 1, characterized in that: the opening cup (13) is provided with a handle (14), the side wall of the shell (1) is provided with an opening (15) for taking out the opening cup (13), and the upper side of the shell (1) corresponding to the opening (15) is provided with a groove body (16) for moving the handle (14).

9. An asphalt flash point detection method, which adopts the asphalt flash point detection device of any one of claims 1 to 8, and is characterized in that: comprises the following steps of (a) carrying out,

(1) taking out the opening cup, adding the asphalt to be detected, wherein the adding amount of the asphalt reaches the constant scale mark of the opening cup, and then putting the opening cup into the heating furnace along the opening of the shell through the handle;

(2) the heating furnace is driven to ascend by rotating the screw rod, the heating furnace ascends to the limit position of the limit convex ring, namely the opening cup and the igniter reach the specified distance, and the thermometer is installed and reaches the specified position of the limit sheet.

(3) Starting the heating furnace to heat the asphalt in the open cup, starting the air extractor to work, observing the temperature rise curve of the thermometer, and heating with high power when the temperature reaches 30 ℃ before the predicted flash point temperature;

(4) after the temperature reaches the predicted flash point temperature within 30 ℃, heating with low power, starting a driving device to enable an igniter to start reciprocating movement, observing the flash point of the open cup by naked eyes, and immediately reading and recording the degree of the thermometer when an evanescent blue flame is reached.

Technical Field

The invention belongs to the technical field of engineering detection equipment, and particularly relates to an asphalt flash point detection device and a detection method thereof.

Background

The flash point of asphalt is the temperature of asphalt when the asphalt is heated to volatilize a mixture of combustible gas and air, and is contacted with a flame under specified conditions, and the initial flash-off, i.e., the occurrence of an evanescent flame, is essentially the temperature of asphalt when it has a blue flash-off.

The asphalt flash point index is used for determining a safe temperature limit when asphalt is heated and melted, so that the safe use of the asphalt is guaranteed, and the asphalt flash point index is very important and is used for evaluating the construction safety.

The lightning of present pitch detects all is that the opening cup heats the appearance ware, and the heating method is electric stove or gas furnace about 1000W generally, and the opening cup is generally made by brass, through setting up accurate temperature instruction of iron support installation thermometer, when the temperature of pitch is about to reach the flash point temperature, through reciprocal the side round trip movement of appearance ware upside at the some firearm, record the temperature value at once when surveing the flash point. However, the whole set of equipment is carried out for open environment, still can have toxic gas to emit when volatilizing combustible gas behind the pitch heating, even operating personnel wears protector, but toxic gas can spill over the laboratory and cause long-time persistence's harm to atmosphere and surrounding animals and plants, and the specific critical point of flash point is not good to be controlled among the operation process, need make some firearm make and move back and forth on the appearance ware upside near the critical point in manual operation, this section time and process probably need last very long, no matter manual operation is tired not tired, still record an evanescent flash point temperature value simultaneously, operating personnel is too late to read when arriving the flash point very easily and leads to the temperature to rise continuously, the data of reading have great error.

Therefore, the invention mainly solves the problems that the toxic gas is easy to release during asphalt flash point detection, and the great error exists in operating the igniter and controlling the flash point temperature simultaneously in a sealing state.

Disclosure of Invention

The invention aims to provide an asphalt flash point detection device and a detection method thereof, and mainly solves the problems that toxic gas is easily released in asphalt flash point detection, and great errors exist in operating an igniter and grasping the flash point temperature simultaneously in a sealed state.

In order to solve the technical problems, the invention is realized by the following technical scheme:

an asphalt flash point detection device comprises a shell, wherein an observation window is arranged on the front side of the shell, a heating furnace is arranged in the shell, an opening cup is placed in the heating furnace, a thermometer and an igniter are arranged above the opening cup, a lifting device for controlling the heating furnace to be close to the thermometer and the igniter is arranged on the lower side of the heating furnace, an air exhaust device is communicated with the upper side of the shell, and an air inlet hole is formed in the lower side of the shell;

the fire outlet end of the igniter is positioned above the opening cup, the other end of the igniter is fixed on a cross rod, a rod sleeve sleeved with the cross rod is arranged at the position, corresponding to the cross rod, of the shell, and a driving device for driving the cross rod to move transversely in a reciprocating mode is arranged in the shell.

Further, the horizontal pole is provided with rack portion, rack portion is provided with fan-shaped fluted disc, fan-shaped fluted disc meshing rack portion and transmission cooperation, fan-shaped fluted disc central authorities are connected with the bar shaft groove, be provided with the motor in the casing, the output of motor is provided with the carousel, carousel eccentric position is provided with the eccentric shaft, the eccentric shaft is installed in bar shaft groove and drive cooperation.

Further, elevating gear includes the lead screw, the upper end swivelling joint of lead screw is in the heating furnace downside, the lower extreme of lead screw runs through the casing and is connected with the bull stick.

Further, a telescopic rod is arranged between the lower side of the heating furnace and the bottom of the shell.

Furthermore, a partition plate is arranged in the shell, and a limiting convex ring is arranged on the side of the lower side of the heating furnace.

Furthermore, the thermometer temperature sensing rod penetrates through the upper side wall of the shell and is matched with the upper side wall in a telescopic mode, and the thermometer is provided with a limiting piece corresponding to the upper side wall of the shell.

Further, the air extraction device comprises a blower and a filter.

Further, the opening cup is provided with a handle, the side wall of the shell is provided with an opening for taking out the opening cup, and a groove body for moving the handle is arranged on the upper side of the shell corresponding to the opening.

A method for detecting flash point of asphalt by using an asphalt flash point detection device comprises the following steps,

(1) taking out the opening cup, adding the asphalt to be detected, wherein the adding amount of the asphalt reaches the constant scale mark of the opening cup, and then putting the opening cup into the heating furnace along the opening of the shell through the handle;

(2) the heating furnace is driven to ascend by rotating the screw rod, the heating furnace ascends to the limit position of the limit convex ring, namely the opening cup and the igniter reach the specified distance, and the thermometer is installed and reaches the specified position of the limit sheet.

(3) Starting the heating furnace to heat the asphalt in the open cup, starting the air extractor to work, observing the temperature rise curve of the thermometer, and heating with high power when the temperature reaches 30 ℃ before the predicted flash point temperature;

(4) after the temperature reaches the predicted flash point temperature within 30 ℃, heating with low power, starting a driving device to enable an igniter to start reciprocating movement, observing the flash point of the open cup by naked eyes, and immediately reading and recording the degree of the thermometer when an evanescent blue flame is reached.

The invention has the following beneficial effects:

(1) the flash point temperature of whole pitch is gone on in a relatively confined space, for observing flash point flame, sets up the front side of casing into the observation window, for providing examination flame burning oxygen, has seted up and has taken out the gas release device, not only provides oxygen for the burning, can be with the gas centralized processing who takes out simultaneously, prevents to get into and influences healthily in the atmosphere.

(2) In addition, the igniter capable of moving automatically is arranged, the igniter is prevented from being moved manually, after the driving device is started, the ignition rod is driven to move synchronously in a reciprocating mode through the driving cross rod, the fire outlet end of the end portion of the igniter moves back and forth on the upper side of the opening cup, a worker can concentrate on the flash point moment and the reading of the thermometer, after the flash point occurs, the temperature value of the thermometer is recorded immediately, and the thermometer temperature sensing ball is located above the opening portion and submerged below the liquid level of asphalt.

(3) In order to conveniently disassemble and assemble the opening cup for replacing the asphalt, the heating furnace on the lower side of the opening cup is designed to be capable of lifting, after the opening cup enters the asphalt, the height of the opening cup can be properly reduced, and then the heating furnace is controlled to lift to control the optimal contact angle and distance.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1: the invention has a schematic structure.

FIG. 2: the invention discloses an enlarged structure diagram of a local and driving device.

FIG. 3: the invention relates to an installation structure diagram of an observation window.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a shell 1, an observation window 10, a heating furnace 12, an opening cup 13, a thermometer 6, an igniter 5, a lifting device 2, an air extractor 4, an air inlet 11, a cross rod 31, a rod sleeve 32, a driving device 3, a rack part 33, a sector fluted disc 34, a strip-shaped shaft groove 35, a motor 38, a rotary disc 36, an eccentric shaft 37, a screw rod 21, a rotary rod 25, an expansion rod 22, a partition plate 23, a limit convex ring 24, a limit sheet 61, a blower 41, a filter 42, a handle 14, an opening 15 and a groove body 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

As shown in fig. 1-3: the utility model provides an asphalt flash point detection device, includes casing 1, and the casing is a relatively sealed space, the front side of casing 1 is provided with observation window 10 for observe the flash point, the casing relatively sealed space can reduce illumination, the more clear seizure flash point of being convenient for. A heating furnace 12 is arranged in the shell 1, an opening cup 13 is placed in the heating furnace 12, a thermometer 6 and an igniter 5 are arranged above the opening cup 13, a lifting device 2 for controlling the heating furnace 12 to be close to the thermometer 6 and the igniter 5 is arranged on the lower side of the heating furnace 12, an air extractor 4 is communicated with the upper side of the shell 1, and an air inlet 11 is arranged on the lower side of the shell 1; the air extractor and the air inlet holes are matched for use, so that gas circulation is formed, oxygen can enter the closed shell conveniently, normal operation of the igniter is promoted, the air inlet holes are uniformly distributed, air inlet is dispersed, and the phenomenon that the igniter cannot be ignited normally due to overlarge airflow is avoided.

The igniter is a metal tube, and a test flame is generated at the end part of the metal tube to form a globular flame with the diameter of about 4 mm. The fire outlet end of the igniter 5 is located above the open cup 13 by a distance of about 10-15 mm. The other end of the igniter 5 is fixed on a cross rod 31, a rod sleeve 32 sleeved with the cross rod 31 is arranged at a position of the shell 1 corresponding to the cross rod 31, the cross rod can slide left and right under the action of the rod sleeve, and the two rod sleeves are arranged at two ends of the cross rod in order to keep the telescopic stability between the cross rod and the rod sleeve. The housing 1 is provided with a driving device 3 for driving the cross bar 31 to move transversely in a reciprocating manner.

In the invention, the flash point temperature of the whole asphalt is carried out in a relatively closed space, the front side of the shell is provided with an observation window for observing flash point flame, and the gas pumping and releasing device is arranged for providing oxygen for flame test and combustion, so that oxygen for combustion is provided, and simultaneously the pumped gas can be treated in a centralized manner, thereby preventing the gas from entering the atmosphere and influencing the health.

In addition, the igniter capable of moving automatically is arranged, the igniter is prevented from being moved manually, after the driving device is started, the ignition rod is driven to move synchronously in a reciprocating mode through the driving cross rod, the fire outlet end of the end portion of the igniter moves back and forth on the upper side of the opening cup, a worker can concentrate on the flash point moment and the reading of the thermometer, after the flash point occurs, the temperature value of the thermometer is recorded immediately, and the thermometer temperature sensing ball is located above the opening portion and submerged below the liquid level of asphalt.

In order to conveniently disassemble and assemble the opening cup for replacing the asphalt, the heating furnace on the lower side of the opening cup is designed to be capable of lifting, after the opening cup enters the asphalt, the height of the opening cup can be properly reduced, and then the heating furnace is controlled to lift to control the optimal contact angle and distance.

As shown in fig. 2: the horizontal pole 31 is provided with rack portion 33, rack portion 33 is provided with fan-shaped fluted disc 34, and the fan-shaped fluted disc is about quarter circular-arc, and the circumference side is provided with the teeth of a cogwheel structure, fan-shaped fluted disc 34 meshes rack portion 33 and transmission cooperation, fan-shaped fluted disc 34 central authorities are connected with bar axle groove 35, be provided with motor 38 in the casing 1, the output of motor 38 is provided with carousel 36, carousel 36 eccentric position is provided with eccentric shaft 37, eccentric shaft 37 is installed in bar axle groove 35 and drive cooperation. The starting motor drives the rotary table to rotate, the eccentric shaft synchronously and circularly moves, the strip-shaped shaft groove drives the fan-shaped fluted disc to swing left and right, the strip-shaped shaft groove provides a stable transverse moving space for the eccentric shaft, and the shaft sleeve can be sleeved outside the eccentric shaft for reducing the friction between the eccentric shaft and the strip-shaped shaft groove.

As shown in fig. 1: the lifting device 2 comprises a screw rod 21, the upper end of the screw rod 21 is rotatably connected to the lower side of the heating furnace 12, and the lower end of the screw rod 21 penetrates through the shell 1 and is connected with a rotating rod 25. For manually adjusting the distance of the heating furnace close to the thermometer and the igniter.

As shown in fig. 1: an expansion link 22 is arranged between the lower side of the heating furnace 12 and the bottom of the shell 1. The telescopic link is used for spacing heating furnace, prevents that the heating furnace from rotating in the painful department under the effect of lead screw, and the telescopic link is two, is located the both sides of lead screw respectively.

As shown in fig. 1: a partition plate 23 is arranged in the shell 1, and a limiting convex ring 24 is arranged on the side of the lower side of the heating furnace 12. The igniter is used for limiting the rising height of the heating furnace, the igniter only moves transversely at the horizontal height because the height of the igniter is fixed, and the height of the fire outlet end of the igniter and the height of the heating furnace are strictly limited in a certain range in order to improve the detection accuracy.

As shown in fig. 1: the temperature sensing rod of the thermometer 6 penetrates through the upper side wall of the shell 1 and is matched with the upper side wall in a telescopic mode, and the thermometer 6 is provided with a limiting piece 61 corresponding to the upper side wall of the shell 1. The height of the temperature sensing rod of the limiting thermometer and the height of the heating furnace are respectively equal, the thermometer is detachably mounted, the thermometer is mounted on the upper side wall of the shell in a pulling and inserting mode, and the thermometer is used for cleaning residual asphalt on the temperature sensing rod of the thermometer after being detached.

As shown in fig. 1: the air extraction device 4 comprises a blower 41 and a filter 42. For extracting air from the housing for gas circulation, the extracted gas being adsorbed by activated carbon or the like in the filter.

As shown in fig. 2: the opening cup 13 is provided with a handle 14, the side wall of the shell 1 is provided with an opening 15 for taking out the opening cup 13, and the upper side of the shell 1 corresponding to the opening 15 is provided with a groove body 16 for moving the handle 14. The opening is provided with a door for covering the opening, and when the heating furnace is lifted, the handle is positioned in the groove body and moves synchronously.

A method for detecting the flash point of asphalt includes such steps as providing a flash point detector,

1, taking out the open cup, adding asphalt to be detected, wherein the adding amount of the asphalt reaches the constant scale mark of the open cup, and then putting the open cup into a heating furnace along the opening of the shell through a handle;

2, the heating furnace is driven to ascend by rotating the screw rod, the heating furnace ascends to the limit position of the limit convex ring, namely, the opening cup and the igniter reach a specified distance, and the thermometer is installed and reaches the specified position of the limit sheet.

3, starting the heating furnace to heat the asphalt in the open cup, starting the air extractor to work, observing the temperature rise curve of the thermometer, and heating with high power when the temperature reaches 30 ℃ before the predicted flash point temperature;

4 heating with low power after reaching the predicted flash point temperature within 30 ℃, starting a driving device to enable an igniter to start reciprocating movement, observing the flash point of the open cup by naked eyes, and immediately reading and recording the degree of the thermometer when reaching an evanescent blue flame.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.