Automatic detection device for trace flash point measurer

Abstract

The utility model relates to the field of petroleum detection instruments, in particular to an automatic detection device for a micro-flash point measurer, which comprises a square-barrel-shaped bottom plate placed on a workbench, a left side plate and a right side plate fixedly connected with the bottom plate, parallel to each other and perpendicular to the bottom plate, and the top end of the left side plate is higher than the right side plate. A top plate is arranged above the bottom plate, an embedding hole is formed in the top plate, a cup cover is fixedly connected in the embedding hole, a lifting plate is arranged between the top plate and the bottom plate, the lifting plate is connected with a lifting assembly, the lifting assembly is connected to the left side plate, and the lifting assembly drives the lifting plate to reciprocate between the bottom plate and the top plate; a sample cup is placed on the lifting plate and is aligned to the cup cover, so that the effects of preventing the cup cover from generating a gap between the sample cup and the cup cover and improving the connection and closing tightness between the cup cover and the sample cup are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum detection instruments, and particularly relates to an automatic detection device for a micro flash point detector. Background Technique

[0002] The flash point is the lowest temperature at which, under specified test conditions, a test flame causes the vapor of the test sample to ignite and the flame spreads over the liquid surface. The ignition point is the temperature at which, on the basis of the flash point, the temperature is further raised until the test sample ignites and can continue to burn for not less than 5 seconds. A flash point detector is a common detection instrument for petroleum products, and is dedicated to measuring the flash point of petroleum products.

[0003] The structure of the existing flash point detector usually includes a body. A test bench is arranged in the body. A placement groove is opened on the test bench. A detection part is arranged above the placement groove. When in use, the tester first places the oil sample to be detected in a sample cup, then transfers the sample cup to the placement groove. Then, after covering the sample cup with a cup cover, the detection part is placed on the sample cup for detection.

[0004] The above-mentioned existing technology has the following defects:

[0005] At present, when detecting petroleum detection products, it is very easy to occur that the cup cover is not completely closed on the sample cup, resulting in uneven heat transfer of the detection part to the sample cup, and large errors in the flash point detection results. Content of the Utility Model

[0006] The purpose of the utility model is to provide an automatic detection device for a micro flash point detector, so as to prevent gaps from appearing between the cup cover and the sample cup, and improve the tightness of the connection and closure between the cup cover and the sample cup, so as to solve the problems raised in the above background technique.

[0007] In order to achieve the above technical purpose and achieve the above technical effect, the utility model is realized by the following technical solutions:

[0008] An automatic detection device for a micro flash point detector includes a body. A workbench is arranged on the body. A square tube-shaped bottom plate is placed on the workbench. The bottom plate is fixedly connected with a left side plate and a right side plate. The left side plate and the right side plate are parallel to each other and perpendicular to the bottom plate. The top end of the left side plate is higher than that of the right side plate. A top plate is arranged above the bottom plate. An embedding hole is opened on the top plate. A cup cover is fixedly connected in the embedding hole. A lifting plate is arranged between the top plate and the bottom plate. The lifting plate is connected with a lifting assembly. The lifting assembly is connected to the left side plate. The lifting assembly drives the lifting plate to reciprocate between the bottom plate and the top plate; a sample cup is placed on the lifting plate, and the sample cup is aligned with the cup cover.

[0009] Preferably, the lifting assembly includes a lifting groove formed in the left side plate. The lifting groove penetrates through the left side plate. A lifting motor is fixedly connected to the top end of the left side plate. The lifting motor is connected to a lifting lead screw. One end of the lifting plate close to the lifting groove is fixedly connected to a connecting plate. The end of the connecting plate away from the lifting plate penetrates through the lifting groove and is threadedly connected to the lifting lead screw. Both sides of the connecting plate are in contact with the inner wall of the lifting groove. The lifting motor drives the lifting lead screw to rotate.

[0010] Preferably, a lifting shield is placed on the lifting plate, and the beaker is placed in the lifting shield.

[0011] Preferably, a stirring groove is formed in the lifting plate. The lifting shield covers the top of the stirring groove. A stirring rod is arranged in the stirring groove. The stirring rod is perpendicular to the lifting plate. A stirring bearing is arranged at the top of the stirring rod. The outer side wall of the stirring bearing is fixedly connected to the lifting shield. The circumferential side wall of the stirring rod is fixedly connected to the inner wall of the stirring shaft sleeve. The top of the stirring rod abuts against the bottom of the specimen cup. The bottom end of the stirring rod penetrates through the lifting plate and is connected to a stirring motor. The stirring motor is fixedly connected to the lifting plate.

[0012] Preferably, a limiting cylinder is fixedly connected to the bottom plate. The axis of the limiting cylinder is perpendicular to the bottom plate. A limiting rod is inserted into the limiting cylinder. After the limiting rod extends out of the limiting cylinder, it is fixedly connected to the stirring motor.

[0013] Preferably, a thermoelectric cooler is covered on the top of the cup lid, and the area of the thermoelectric cooler is larger than the area of the cup lid.

[0014] Preferably, a heat sink abuts against the top surface of the thermoelectric cooler, and the heat sink is arranged in a crown shape.

[0015] Advantageous Effects

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

[0017] The specimen cup holds the specimen to be detected, and then during the detection, the lifting assembly drives the lifting plate to rise. Since the cup lid is fixedly connected to the top plate, when the lifting assembly drives the lifting plate to rise, the specimen cup gradually abuts against the cup lid. After the specimen cup abuts against the cup lid, the lifting assembly keeps the specimen cup and the cup lid in an abutting state, thereby preventing a gap from occurring between the specimen cup and the cup lid, achieving the effect of preventing a gap from occurring between the cup lid and improving the connection and closing tightness between the specimen cup and the cup lid. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure when the cup cover is buckled on the test cup;

[0020] Figure 2 It is a schematic cross-sectional view of the structure when the cup cover is buckled on the test cup.

[0021] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Bottom plate; 11. Left side plate; 12. Right side plate; 13. Top plate; 131. Embedded hole; 2. Cup cover; 3. Lifting plate; 31. Lifting assembly; 311. Lifting groove; 312. Connecting plate; 313. Lifting motor; 314. Lifting lead screw; 4. Lifting shield; 41. Stirring tank; 42. Stirring rod; 421. Stirring shaft sleeve; 43. Stirring motor; 5. Limiting cylinder; 51. Limiting rod; 6. Semiconductor refrigeration sheet; 7. Heat sink; 8. Test cup. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] Refer to Figure 1-2 As shown, an automatic detection device for a micro flash point detector includes a machine body. The machine body is provided with a workbench. By setting on the workbench, the test cup 8 is automatically driven to be lifted upward, so that the test cup 8 is kept in a tightly pressed state with the cup cover 2, thereby achieving the effect of preventing the cup cover and improving the tightness of the connection and closure between the test cup 8 and the cup cover, and improving the tightness of the connection and closure between the cup cover and the test cup 8.

[0025] Refer to Figure 1-2As shown in the figure, a square tube-shaped bottom plate 1 is placed on the workbench. The bottom plate 1 is fixedly connected to a left side plate 11 and a right side plate 12. The left side plate 11 and the right side plate 12 are parallel to each other and both perpendicular to the bottom plate 1. The top end of the left side plate 11 is higher than that of the right side plate 12. Above the bottom plate 1, there is a top plate 13. An embedding hole 131 is opened on the top plate 13, and a cup cover 2 is fixedly connected in the embedding hole 131. Between the top plate 13 and the bottom plate 1, there is a lifting plate 3. A sample cup 8 is placed on the lifting plate 3, and the sample cup 8 is aligned with the cup cover. The lifting plate 3 is connected to a lifting assembly 31, and the lifting assembly 31 drives the lifting plate 3 to reciprocate between the bottom plate 1 and the top plate 13. The lifting assembly 31 includes a lifting groove 311 opened on the left side plate 11. The lifting groove 311 penetrates through the left side plate 11. At the top end of the left side plate 11, a lifting motor 313 is fixedly connected. The lifting motor 313 is connected to a lifting lead screw 314. One end of the lifting plate 3 close to the lifting groove 311 is fixedly connected to a connecting plate 312. The end of the connecting plate 312 away from the lifting plate 3 penetrates through the lifting groove 311 and is threadedly connected to the lifting lead screw 314. The two sides of the connecting plate 312 are in contact with the inner wall of the lifting groove 311. The lifting motor 313 drives the lifting lead screw 314 to rotate. The lead screw drive has good transmission stability, so as to improve the stability during movement.

[0026] Refer to Figure 1-2 As shown in the figure, a lifting shield 4 is placed on the lifting plate 3. A beaker is placed in the lifting shield 4. A stirring groove 41 is opened on the lifting plate 3. The lifting shield 4 covers the top end of the stirring groove 41. In the stirring groove 41, there is a stirring rod 42 made of rubber material. The stirring rod 42 is perpendicular to the lifting plate 3. At the top end of the stirring rod 42, there is a stirring bearing. The outer side wall of the stirring bearing is fixedly connected to the lifting shield 4. The circumferential side wall of the stirring rod 42 is fixedly connected to the inner wall of the stirring shaft sleeve 421. The top end of the stirring rod 42 abuts against the bottom of the sample cup 8. The bottom end of the stirring rod 42 penetrates through the lifting plate 3 and is connected to a stirring motor 43. The stirring motor 43 is fixedly connected to the lifting plate 3.

[0027] A limiting cylinder 5 is fixedly connected to the bottom plate 1. The axis of the limiting cylinder 5 is perpendicular to the bottom plate 1. A limiting rod 51 is inserted into the limiting cylinder 5. After the limiting rod 51 extends out of the limiting cylinder 5, it is fixedly connected to the stirring motor 43. When the lifting plate 3 moves up and down, the stirring motor 43 rotates synchronously with the lifting plate 3. During the movement of the stirring motor 43, the limiting rod 51 moves with the stirring motor 43. The limiting rod 51 and the limiting cylinder 5 restrict the movement of the stirring motor 43, thereby improving the stability of the sample cup 8 during movement.

[0028] The top end of the cup lid 2 is covered with a thermoelectric cooler 6. The area of the thermoelectric cooler 6 is larger than that of the cup lid 2. A heat sink 7 is abutted on the top surface of the thermoelectric cooler 6. The heat sink 7 is arranged in a crown shape. After the experiment is completed, the cup lid 2 usually remains at a relatively high temperature. Through the combined use of the thermoelectric cooler 6 and the heat sink 7, the residual temperature on the cup lid 2 can be quickly dissipated, preventing the residual temperature from causing a fire and improving the safety of use.

[0029] A specific application of this embodiment is as follows:

[0030] When in use, first, the worker adds the sample to be tested into the sample cup 8. Then, the sample cup 8 is placed in the lifting protective cover 4. The stirring motor 43 drives the sample cup 8 to rotate through the frictional force between the stirring rod 42 and the sample cup 8. When the sample in the sample cup 8 is stirred evenly, the stirring motor 43 stops working. The lifting motor 313 drives the lifting lead screw 314 to rotate. The lifting plate 3 moves towards the top plate 13 under the drive of the lifting lead screw. When the sample cup 8 is in close contact with the cup lid 2, the lifting motor 313 stops moving, so that the sample cup 8 and the cup lid 2 are kept in this position state. The set lifting protective cover prevents the lifting motor 313 from driving the sample cup 8 to rise too far. During the rising process, the limiting cylinder and the limiting rod cooperate to restrict the movement track of the lifting plate 3. After the lifting motor 313 stops working, the experimenter can conduct the flash point experiment.

[0031] After the experiment is completed, the worker removes the experimental device on the cup lid 2, and then uses the thermoelectric cooler 6 for refrigeration, so that the heat on the cup lid 2 and the sample cup 8 is quickly dissipated, reducing the temperature of the cup lid 2, thereby ensuring the safety of the experimental equipment. In summary, through the above steps, the effect of preventing gaps between the cup lid and improving the connection and closing tightness between the sample cup 8 and the cup lid is achieved.

[0032] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Those of ordinary skill in the art in the technical field of the present invention, within the substantial scope of the present invention, any changes, alterations, additions or substitutions should fall within the protection scope of the present invention.

Claims

1. An automatic detection device for a trace flash point tester, comprising a body, the body being provided with a workbench, characterized in that: A square cylindrical bottom plate (1) is placed on the workbench. The bottom plate (1) is fixedly connected to a left side plate (11) and a right side plate (12). The left side plate (11) and the right side plate (12) are parallel to each other and perpendicular to the bottom plate (1). The top of the left side plate (11) is higher than the top of the right side plate (12). A top plate (13) is arranged above the bottom plate (1). An embedding hole (131) is opened on the top plate (13). A cup cover (2) is fixedly connected in the embedding hole (131). A lifting plate (3) is arranged between the top plate (13) and the bottom plate (1). The lifting plate (3) is connected to a lifting assembly (31). The lifting assembly (31) is connected to the left side plate (11). The lifting assembly (31) drives the lifting plate (3) to reciprocate between the bottom plate (1) and the top plate (13). A sample cup (8) is placed on the lifting plate (3). The sample cup (8) is aligned with the cup cover.

2. The automatic detection device for a trace flash point determination device according to claim 1, characterized in that: The lifting assembly (31) comprises a lifting slot (311) provided on the left side plate (11), the lifting slot (311) passes through the left side plate (11), a lifting motor (313) is fixedly connected to the top of the left side plate (11), the lifting motor (313) is connected to a lifting screw (314), one end of the lifting plate (3) close to the lifting slot (311) is fixedly connected to a connecting plate (312), one end of the connecting plate (312) away from the lifting plate (3) passes through the lifting slot (311) and is threadedly connected to the lifting screw (314), two sides of the connecting plate (312) abut against the inner wall of the lifting slot (311), and the lifting motor (313) drives the lifting screw (314) to rotate.

3. The automatic detection device for a trace flash point determination device according to claim 2, characterized in that: A lifting shield (4) is placed on the lifting plate (3), and a beaker of the lifting shield (4) is placed in the lifting shield (4).

4. The automatic detection device for a trace flash point determination device according to claim 3, characterized in that: The lifting plate (3) is provided with a stirring groove (41), the lifting shield (4) is provided at the top of the stirring groove (41), a stirring rod (42) is provided in the stirring groove (41), the stirring rod (42) is perpendicular to the lifting plate (3), a stirring bearing is provided at the top of the stirring rod (42), the outer wall of the stirring bearing is fixedly connected to the lifting shield (4), the circumferential side wall of the stirring rod (42) is fixedly connected to the inner wall of the stirring shaft sleeve (421), and the top of the stirring rod (42) is in contact with the bottom of the sample cup (8); the bottom end of the stirring rod (42) passes through the lifting plate (3) and is connected to a stirring motor (43), and the stirring motor (43) is fixedly connected to the lifting plate (3).

5. The automatic detection device for a trace flash point determination device according to claim 4, characterized in that: A limiting cylinder (5) is fixedly connected to the bottom plate (1), the axis of the limiting cylinder (5) is perpendicular to the bottom plate (1), a limiting rod (51) is inserted into the limiting cylinder (5), and the limiting rod (51) is fixedly connected to the stirring motor (43) after extending out of the limiting cylinder (5).

6. The automatic detection device for a trace flash point determination device according to claim 5, characterized in that: The top of the cup cover (2) is covered with a semiconductor cooling sheet (6), and the area of ​​the semiconductor cooling sheet (6) is larger than the area of ​​the cup cover (2).

7. The automatic detection device for a trace flash point determination device according to claim 6, characterized in that: A heat sink (7) is abutted against the top surface of the semiconductor refrigeration sheet (6), and the heat sink (7) is arranged in a crown shape.

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