Drying oven based on asphalt rotating film

Abstract

The invention provides an asphalt rotating film-based drying oven, which comprises a rotating disc arranged in the drying oven, a rotating shaft is fixedly arranged in the middle of the rotating disc, a limiting baffle parallel to the rotating disc is arranged on the rotating shaft, and sample openings are circumferentially arrayed in the rotating disc. A bottle clamp assembly corresponding to the sample opening is arranged on one side, deviating from the limiting baffle plate, of the turntable in a sliding manner along the axial direction of the turntable, and an elastic supporting mechanism is arranged between one side of the bottle clamp assembly and the turntable; the elastic supporting mechanism is used for applying elastic force for moving towards the rotating disc to the bottle clamp assembly; in the test process, the sample containing bottle can be kept in the in-place mounting state in the sample opening of the rotary disc, it is guaranteed that the distance between the sample containing bottle and the air tap is fixed, and the accuracy of the test result is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ovens, and in particular relates to an oven based on asphalt rotating film. Background Art

[0002] The asphalt rotating film oven heats the rotating asphalt film with air under specified conditions and examines the changes in specific physical properties before and after heating, such as the change in mass after heating, the changes in the penetration, viscosity, elongation and brittle point of the asphalt residue, in order to judge the asphalt's resistance to heat and air aging.

[0003] In the asphalt rotary thin film oven test, the distance between the sample bottle and the air nozzle is an important parameter, which directly affects the uniform heating degree of the asphalt during the heating process and the accuracy of the test results. By adjusting the distance between the sample bottle and the air nozzle, the heating process can be optimized to ensure that the asphalt can be heated evenly during the heating process, avoiding local overheating or insufficient heating. Such adjustments help to improve the repeatability and reliability of the test, thereby more accurately evaluating the performance of the asphalt. At present, the distance between the air nozzle and the opening of the sample bottle is usually adjusted to 6.35mm during the test.

[0004] In the prior art, a sample bottle is usually inserted into the sample port of a turntable, and then the position of the air nozzle is adjusted so that the distance between the air nozzle and the sample bottle is 6.35 mm. However, during the rotation of the turntable, the asphalt sample inside the sample bottle flows, causing the sample bottle to shake inside the sample port, or the sample bottle is not installed in place, causing the distance between the sample bottle and the air nozzle to change, thereby affecting the uniformity of the heating of the asphalt sample and further affecting the accuracy of the test results.

[0005] Therefore, it is necessary to design an oven based on asphalt rotating film, which can keep the sample bottle installed in place inside the turntable sample port during the test, ensure that the distance between the sample bottle and the gas nozzle remains unchanged, and improve the accuracy of the test results to solve the current technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an oven based on asphalt rotating film, which can keep the sample bottle installed in place inside the sample port of the turntable during the test, ensure that the distance between the sample bottle and the air nozzle remains unchanged, and improve the accuracy of the test results.

[0007] The technical solution of the present invention is: an oven based on asphalt rotating film, comprising a turntable arranged inside the oven, a rotating shaft fixedly arranged in the middle of the turntable, a limit baffle parallel to the turntable arranged on the rotating shaft, sample ports in a circular array on the turntable, a bottle clamp assembly corresponding to the sample port is arranged on the side of the turntable away from the limit baffle and sliding along its axial direction, an elastic support mechanism is arranged between one side of the bottle clamp assembly and the turntable; the elastic support mechanism is used to apply an elastic force to the bottle clamp assembly to move toward the turntable.

[0008] The bottle clamp assembly comprises a support ring, a semicircular notch is formed on one side of the inner wall of the support ring, two arc-shaped clamping plates are symmetrically arranged inside the notch, the ends of the two clamping plates which are away from each other are rotatably connected to the inner sides of the two ends of the notch respectively, the ends of the two clamping plates which are close to each other are transmission-connected with a driving block, and an adjustment mechanism for driving the driving block to move radially along the support ring is arranged on the support ring.

[0009] The adjustment mechanism comprises a support seat fixedly arranged on the outer side of the support ring corresponding to the driving block, an adjustment bolt is rotatably connected to the support seat, and the driving block is threadedly connected to the adjustment bolt.

[0010] A support spring is sleeved on the outer side of the adjusting bolt, one end of the support spring abuts against the side surface of the driving block, and the other end of the support spring abuts against the inner side of the support seat.

[0011] Two sliding grooves are symmetrically arranged on the support seat, and a sliding rod is fixedly arranged at the end of the clamping plate, and the sliding rod is slidably arranged inside the sliding groove.

[0012] The inner sides of the clamping plate and the support ring are both provided with pads, the pads are made of silicone material, and an anti-slip groove is provided on one side of the pad close to the center of the support ring.

[0013] The elastic support mechanism has guide rods arranged in a circular array on the support ring close to one side of the turntable, a baffle is fixedly provided on one end of the guide rod facing away from the support ring, the guide rod is slidably arranged on the turntable along the axial direction of the turntable, a return spring is sleeved on the outer side of the guide rod between the baffle and the turntable, one end of the return spring abuts against one side of the baffle, and the other end of the return spring abuts against one side of the turntable.

[0014] The turntable is provided with a sliding hole matched with the guide rod, a guide tube corresponding to the sliding hole is fixedly arranged on one side of the turntable away from the bottle clamp assembly, and the guide rod is slidably arranged inside the guide tube.

[0015] A side of the turntable close to the limit baffle is provided with support columns in a circular array, the support columns and the sample ports are staggered, and the limit baffle is fixedly arranged on one end of the support columns away from the turntable.

[0016] The support column is a tubular structure, and a screw matching the support column is fixedly arranged on one side of the turntable close to the limit baffle. The screw is movably sleeved on the outside of the screw, and a locking nut is arranged at the end of the screw for locking or releasing the limit baffle and the support column.

[0017] Beneficial effects of the present invention:

[0018] (1) The sample bottle is inserted into the sample port, and its end is against the limit baffle to ensure that the position of the sample bottle is fixed. At this time, the position of the gas nozzle is adjusted so that the distance between the gas nozzle and the sample bottle is 6.35 mm. The sample bottle is clamped and fixed by the bottle clamp assembly to prevent the sample bottle from moving during the rotation process and causing the distance between the sample bottle and the gas nozzle to change, thereby ensuring that the distance between the sample bottle and the gas nozzle remains fixed and improving the accuracy of the test results;

[0019] (2) Before using the bottle clamp assembly to clamp the sample bottle, first pull the bottle clamp assembly in the direction away from the limit baffle to compress the elastic support mechanism, and then use the bottle clamp assembly to clamp the sample bottle. In this way, the elastic support mechanism applies elastic force to the bottle clamp assembly to keep the end of the sample bottle against the limit baffle, thereby preventing the sample bottle from separating from the limit baffle during the rotation of the turntable, thereby preventing the distance between the sample bottle and the gas nozzle from changing. Further, the distance between the sample bottle and the gas nozzle is guaranteed to be fixed and unchanged, thereby improving the accuracy of the test results;

[0020] (3) If the bottle clamp assembly becomes loose during the test, the elastic force of the elastic support mechanism will drive the bottle clamp assembly to reset. The bottle clamp assembly can be observed through the observation window on the oven door panel. If the bottle clamp assembly is found to be reset, it is determined that the sample bottle is loose and the test structure may have been affected, and the test needs to be repeated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the oven based on the asphalt rotating film in the present invention.

[0022] Figure 2 It is a schematic diagram of the partial structure of the oven based on the asphalt rotating film in the present invention.

[0023] Figure 3 This is one of the structural schematic diagrams of the bottle clamp assembly in the present invention.

[0024] Figure 4 This is the second structural schematic diagram of the bottle clamp assembly in the present invention.

[0025] Figure 5 for Figure 4 Cross-section view at AA in the middle.

[0026] Figure 6 It is a schematic diagram of the installation structure of the support column in the present invention. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to be any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limitations.

[0028] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] like Figures 1 to 6As shown, the oven based on the asphalt rotating film includes a turntable 1 arranged inside the oven, a rotating shaft 3 is fixedly arranged in the middle of the turntable 1, one end of the rotating shaft 3 is connected to the motor, and the motor drives the rotating shaft 3 to drive the turntable 1 to rotate at a certain speed, a limit baffle 2 parallel to the turntable 1 is arranged on the rotating shaft 3, and the turntable 3 has sample ports 11 in a circumferential array, and a bottle clamp assembly 5 corresponding to the sample port 11 is slidably arranged on the side of the turntable 1 away from the limit baffle 2 along its axial direction, and the bottle clamp assembly 5 has a An elastic support mechanism 6 is provided between one side and the turntable 1; the elastic support mechanism 6 is used to apply an elastic force to the bottle clamp assembly 5 to move toward the turntable; in this embodiment, the sample bottle is inserted into the sample port 11, and its end is against the limit baffle 2, which can ensure that the position of the sample bottle is fixed. At this time, the position of the air nozzle is adjusted so that the distance between the air nozzle and the sample bottle is 6.35 mm. The sample bottle is clamped and fixed by the bottle clamp assembly 5, which can prevent the sample bottle from moving during the rotation and causing the sample to be stuck. The distance between the bottle and the gas nozzle changes, ensuring that the distance between the sample bottle and the gas nozzle remains unchanged, thereby improving the accuracy of the test results; in addition, before using the bottle clamp assembly 5 to clamp the sample bottle, first pull the bottle clamp assembly 5 in the direction away from the limit baffle 2 to compress the elastic support mechanism 6, and then use the bottle clamp assembly 5 to clamp the sample bottle. In this way, the elastic support mechanism 6 applies elastic force to the bottle clamp assembly 5 to keep the end of the sample bottle against the limit baffle 2, thereby avoiding the separation of the sample bottle and the limit baffle 2 during the rotation of the turntable 1, which causes the distance between the sample bottle and the gas nozzle to change, and further, ensuring that the distance between the sample bottle and the gas nozzle remains unchanged, thereby improving the accuracy of the test results; when the bottle clamp assembly 5 becomes loose during the test, the elastic force of the elastic support mechanism 6 will drive the bottle clamp assembly 5 to reset, and the bottle clamp assembly 5 is observed through the observation window on the oven door panel. When it is found that the bottle clamp assembly 5 is reset, it is judged that the sample bottle is loose, the test structure may have been affected, and the sample needs to be re-tested.

[0030] In some embodiments, Figures 3 to 5 As shown, the bottle clamp assembly 5 has a support ring 51, and a semicircular notch 511 is provided on one side of the inner wall of the support ring 51. Two arc-shaped clamping plates 52 are symmetrically arranged inside the notch 511. The ends of the two clamping plates 52 that are away from each other are rotatably connected to the inner sides of the two ends of the notch 511 respectively, and the ends of the two clamping plates 52 that are close to each other are transmission-connected with a driving block 57. The support ring 51 is provided with an adjusting mechanism for driving the driving block 57 to move radially along the support ring; wherein the driving block 57 is moved radially along the support ring 51 by the adjusting mechanism, so that the driving block 57 is close to or away from the center of the support ring 51, and the driving block 57 drives the clamping plate 52, and the clamping plate 52 cooperates with the support ring 51 to clamp or release the sample bottle inside the support ring 51.

[0031] In some embodiments, as a specific implementation of the adjustment mechanism in the above embodiments, Figure 5 As shown, the adjustment mechanism has a support seat 54 fixedly arranged on the outer side of the support ring 51 corresponding to the driving block 57, and an adjusting bolt 55 is rotatably connected to the support seat 54, and the driving block 57 is threadedly connected to the adjusting bolt 55; an internal threaded hole matching the adjusting bolt 55 is provided inside the driving block 57, and the axial direction of the adjusting bolt 55 is toward the center of the support ring 51. The adjusting bolt 55 is rotated, and the threaded structure between the adjusting bolt 55 and the driving block 57 cooperates, which can drive the driving block 57 to move along the axial direction of the adjusting bolt 55. When the driving block 57 moves, it drives the end of the clamping plate 52 to move, and at the same time drives the clamping plate 52 to swing, so that the clamping plate 52 can clamp or release the sample bottle inside the support ring 51.

[0032] In some embodiments, a support spring 56 is mounted on the outer side of the adjusting bolt 55, one end of the support spring 56 is against the side of the driving block 57, and the other end of the support spring 56 is against the inner side of the support seat 54. The support spring 56 applies an axial force to the driving block 57, so that the thread between the support spring 56 and the adjusting screw 55 is self-locking, thereby preventing the adjusting bolt 55 from rotating when the turntable 1 rotates.

[0033] In some embodiments, two slide grooves 58 are symmetrically arranged on the support seat 54, and a slide rod 59 is fixedly arranged at the end of the clamping plate 52. The slide rod 59 is slidably arranged inside the slide groove 58. During the movement of the driving block 57, the end of the clamping plate 52 slides inside the slide groove 58 through the slide rod 59, so that the clamping plate 52 can swing inward or outward to clamp or release the sample bottle.

[0034] In some embodiments, pads 53 are provided on the inner sides of the clamping plate 52 and the support ring 51. The pads 53 are made of silicone material. An anti-slip groove is provided on the side of the pad 53 close to the center of the support ring 51. The test temperature range inside the oven is 163℃±0.5℃, and the heat resistance temperature of the silicone material can reach 200℃. The silicone pads 53 with anti-slip grooves can play a certain buffering role when clamping the sample bottle to avoid damage to the sample bottle. At the same time, they can increase the friction between the sample bottle and the sample bottle to avoid loosening after clamping.

[0035] In some embodiments, the elastic support mechanism 6 has a guide rod 61 arranged in a circumferential array on the support ring 51 near the turntable 1 side, and a baffle 63 is fixedly arranged on the end of the guide rod 61 away from the support ring 51. The guide rod 61 is slidably arranged on the turntable 1 along the axial direction of the turntable 1, and a return spring 62 is sleeved on the outer side of the guide rod 61 between the baffle 63 and the turntable 1. One end of the return spring 62 abuts against one side of the baffle 63, and the other end of the return spring 62 abuts against one side of the turntable 1. Before using the bottle clamp assembly 5 to clamp the sample bottle, first move it away from the limit position. The bottle clamp assembly 5 is pulled in the direction of the baffle plate 2, and the bottle clamp assembly 5 drives the guide rod 61 and the baffle plate 63 to move, compressing the reset spring 62, and then the bottle clamp assembly 5 is used to clamp the sample bottle, and the reset spring 62 applies elastic force to the baffle plate 63, which acts on the bottle clamp assembly 5 through the guide rod 61, so that the bottle clamp assembly 5 has a tendency to approach the turntable 1, so that the end of the sample bottle and the limit baffle plate 2 are kept in a state of abutment, avoiding the separation between the sample bottle and the limit baffle plate 2 during the rotation of the turntable 1, which causes the distance between the sample bottle and the gas nozzle to change.

[0036] In some embodiments, a sliding hole 12 matching with the guide rod 61 is opened on the turntable 1, and a guide tube 64 corresponding to the sliding hole 12 is fixedly arranged on the side of the turntable 1 facing away from the bottle clamp assembly 5. The guide rod 61 is slidably arranged inside the guide tube 64. The guide tube 64 can increase the contact area between the sliding hole 12 and the guide rod 61, improve the stability of the movement of the guide rod 61, and thereby improve the stability of the bottle clamp assembly 5.

[0037] In some embodiments, support columns 4 are arranged in a circular array on one side of the turntable 1 near the limit baffle 2, and the support columns 4 are staggered with the sample port 11. The limit baffle 2 is fixedly arranged on the support columns 4 at one end facing away from the turntable 1. The support columns 4 provide support between the turntable 1 and the limit baffle 2, so that the distance between the limit baffle 2 and the turntable 1 is fixed and the same, thereby improving the positioning accuracy of the sample bottle.

[0038] In some embodiments, Figure 6 As shown, the support column 4 is a tubular structure, and a screw 13 matching the support column 4 is fixedly provided on one side of the turntable 1 close to the limit baffle 2. The screw 13 is movably mounted on the outer side of the screw 13, and a locking nut 14 for locking or releasing the limit baffle 2 and the support column 4 is provided on the end of the screw 13. The limit baffle 2 is movably mounted on the outer side of the rotating shaft 3. By removing the locking nut 14, the limit baffle 2 can be moved to the side away from the turntable 1, and then the support column 4 can be removed from the screw 13 for replacement. By replacing support columns 4 of different lengths, the distance between the turntable 1 and the limit baffle 2 can be changed to meet different positioning requirements for sample bottles.

[0039] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0040] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An oven based on asphalt rotating film, characterized in that: The invention comprises a rotating disk arranged inside the oven, a rotating shaft is fixedly arranged in the middle of the rotating disk, a limit baffle plate parallel to the rotating disk is arranged on the rotating shaft, sample ports are arranged in a circumferential array on the rotating disk, a bottle clamp assembly corresponding to the sample port is arranged on the side of the rotating disk away from the limit baffle plate and slides along the axial direction thereof, and an elastic support mechanism is arranged between one side of the bottle clamp assembly and the rotating disk; The elastic support mechanism is used to apply elastic force to the bottle clamp assembly to move toward the turntable.

2. The asphalt rotating film based oven according to claim 1, characterized in that: The bottle clamp assembly comprises a support ring, a semicircular notch is formed on one side of the inner wall of the support ring, two arc-shaped clamping plates are symmetrically arranged inside the notch, the ends of the two clamping plates which are away from each other are rotatably connected to the inner sides of the two ends of the notch respectively, the ends of the two clamping plates which are close to each other are transmission-connected with a driving block, and an adjustment mechanism for driving the driving block to move radially along the support ring is arranged on the support ring.

3. The asphalt rotating film based oven according to claim 2, characterized in that: The adjustment mechanism comprises a support seat fixedly arranged on the outer side of the support ring corresponding to the driving block, an adjustment bolt is rotatably connected to the support seat, and the driving block is threadedly connected to the adjustment bolt.

4. The asphalt rotating film based oven according to claim 3, characterized in that: A support spring is sleeved on the outer side of the adjusting bolt, one end of the support spring abuts against the side surface of the driving block, and the other end of the support spring abuts against the inner side of the support seat.

5. The asphalt rotating film based oven according to claim 2, characterized in that: Two sliding grooves are symmetrically arranged on the support seat, and a sliding rod is fixedly arranged at the end of the clamping plate, and the sliding rod is slidably arranged inside the sliding groove.

6. The asphalt rotating film based oven according to claim 1, characterized in that: The inner sides of the clamping plate and the support ring are both provided with pads, the pads are made of silicone material, and an anti-slip groove is provided on one side of the pad close to the center of the support ring.

7. The asphalt rotating film based oven according to claim 1, characterized in that: The elastic support mechanism has guide rods arranged in a circular array on the support ring close to one side of the turntable, a baffle is fixedly provided on one end of the guide rod facing away from the support ring, the guide rod is slidably arranged on the turntable along the axial direction of the turntable, a return spring is sleeved on the outer side of the guide rod between the baffle and the turntable, one end of the return spring abuts against one side of the baffle, and the other end of the return spring abuts against one side of the turntable.

8. The asphalt rotating film based oven according to claim 7, characterized in that: The turntable is provided with a sliding hole matched with the guide rod, a guide tube corresponding to the sliding hole is fixedly arranged on one side of the turntable away from the bottle clamp assembly, and the guide rod is slidably arranged inside the guide tube.

9. The asphalt rotating film based oven according to claim 1, characterized in that: A side of the turntable close to the limit baffle is provided with support columns in a circular array, the support columns and the sample ports are staggered, and the limit baffle is fixedly arranged on one end of the support columns away from the turntable.

10. The asphalt rotating film based oven according to claim 9, characterized in that: The support column is a tubular structure, and a screw matching the support column is fixedly arranged on one side of the turntable close to the limit baffle. The screw is movably sleeved on the outside of the screw, and a locking nut is arranged at the end of the screw for locking or releasing the limit baffle and the support column.

Images