Blow-drying device for metallographic specimens

Abstract

The utility model discloses a blowing device for metallographic samples. The blowing device comprises: a base, a blowing assembly and a carrier assembly, the blowing assembly comprises a mounting arm and a blowing head, the mounting arm is connected to the base, the blowing head is connected to the mounting arm, the blowing head has an air inlet and an air blowing hole, the air blowing hole is suitable for blowing air to the metallographic sample, the carrier assembly comprises a carrier base and a stage, the carrier base is connected to the base, the stage is suitable for fixing the metallographic sample, the stage is rotatably connected to the carrier base, and the rotation axis of the stage is perpendicular to the axis of the air blowing hole. By rotating the stage, the metallographic sample fixed on the stage can be rotated along the rotation axis of the stage to adjust the angle between the upper surface of the metallographic sample and the air flow blown out of the air blowing hole, so that the pollutants remaining in the gap of the metallographic sample can flow along the inside of the gap under the blowing of the air flow and flow out at a suitable position, thereby reducing the risk of pollutants contaminating the surface of the metallographic sample during the drying process.

Description

Technical Field

[0001] The utility model relates to the technical field of metallographic testing devices, in particular to a drying device for metallographic samples. Background Art

[0002] During the research, development, production and use of metal materials, it is necessary to observe the metallographic structure to determine the basic information of the internal crystal structure and atomic arrangement structure of the metal materials. Metallographic structure observation is a simple and convenient method to study and detect metal materials. Before observing the metallographic structure under a microscope, a qualified metallographic sample needs to be prepared. The preparation of a qualified metallographic sample requires multiple steps of grinding, polishing, corrosion, cleaning and drying.

[0003] In the related art, the drying of metallographic specimens usually adopts the method of slow evaporation of cold air flow. However, during the drying process, it is difficult to maintain the angle between the blowing direction and the specimen. The change in the angle between the blowing direction and the specimen causes the air flow to deviate. The contaminants in the gaps of the metallographic specimens are easy to overflow from the surface of the specimens, causing surface contamination of the metallographic specimens. Utility Model Content

[0004] The utility model aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the utility model provides a drying device for metallographic samples, which reduces the risk of pollutants contaminating the surface of the metallographic samples during the drying process.

[0005] According to the embodiment of the utility model, the blowing drying device for metallographic samples includes: a base; a blowing assembly, the blowing assembly includes a mounting arm and a blowing head, the mounting arm is connected to the base, the blowing head is connected to the mounting arm, the blowing head has an air inlet and an air blowing hole, the air inlet is suitable for being connected to an air source, and the air blowing hole is suitable for blowing air to the metallographic sample; a loading assembly, the loading assembly includes a loading base and a loading stage, the loading base is connected to the base, the loading stage is suitable for fixing the metallographic sample, the loading stage is rotatably connected to the loading base, and the rotation axis of the loading stage is perpendicular to the axis of the air blowing hole.

[0006] According to the blow-drying device for metallographic specimens in the embodiment of the utility model, the upper surface of the metallographic specimen fixed on the stage also rotates along the rotation axis of the stage to adjust the angle between the upper surface of the metallographic specimen and the axis of the blowing hole, that is, to adjust the angle between the upper surface of the metallographic specimen and the airflow blown out of the blowing hole, so that the contaminants remaining in the gaps of the metallographic specimen can flow along the inside of the gaps under the blowing of the airflow and flow out at a suitable position (non-observation position), thereby reducing the risk of contaminants contaminating the surface of the metallographic specimen during the blow-drying process.

[0007] According to some embodiments of the utility model, the drying device further includes: an airflow regulating component, which is used to regulate the gas flow from the air source to the air inlet.

[0008] According to some embodiments of the utility model, the airflow regulating assembly includes: an airflow regulating valve, which is arranged in the mounting arm and connected between the air source and the air inlet; an airflow regulating knob, which is arranged on the outside of the mounting arm and is used to adjust the opening of the airflow regulating valve.

[0009] According to some embodiments of the utility model, the drying device further includes: a control component, the control component is used to control the on-off of the air source to the air inlet hole.

[0010] According to some embodiments of the utility model, the control component includes: a solenoid valve, which is arranged in the mounting arm and connected between the air source and the air inlet; a controller, at least part of which is arranged on the base, and the controller is used to control the opening and closing of the solenoid valve.

[0011] According to some embodiments of the present invention, the controller has a start button and a stop button, the start button is used to open the solenoid valve, and the stop button is used to close the solenoid valve.

[0012] According to some embodiments of the present utility model, the controller further comprises a timing control knob, and the timing control knob is used to close the solenoid valve at a fixed time.

[0013] According to some embodiments of the utility model, the stage includes a clamping portion and a rotating portion which are fixedly connected, the clamping portion is suitable for clamping and fixing the metallographic sample, the rotating portion is rotatably connected to the stage base, and the stage base has an adjusting portion for adjusting the rotation angle of the rotating portion.

[0014] According to some embodiments of the present invention, the rotating part includes a worm wheel, the adjusting part includes a worm, and the worm wheel is meshed with the worm.

[0015] According to some embodiments of the utility model, the drying device further includes a filter assembly, which is connected to the base and / or the mounting arm, and is connected between the air source and the air inlet.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a drying device, a metallographic specimen and an air source according to an embodiment of the utility model;

[0018] Figure 2 1 is a circuit diagram of a blow-drying device according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] Blow-drying device 100;

[0021] Base 1;

[0022] Blowing assembly 2; mounting arm 21; blowing head 22; blowing hole 221;

[0023] Gas source 3;

[0024] The object-carrying assembly 4; the object-carrying base 41; the adjusting portion 411; the object-carrying platform 42; the clamping portion 421; the clamping knob 4211; the rotating portion 422; the clamping member 423;

[0025] Metallographic specimen 5;

[0026] Airflow adjustment knob 6;

[0027] Solenoid valve 71; start button 721; stop button 722; timing control knob 723; control circuit 724; power supply circuit 725; timing start button 726; first coil 731; first switch 732; second switch 733; second coil 741; third switch 742; fourth switch 743;

[0028] Plug 75; power module 76;

[0029] Filter assembly 8. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Combine the following Figure 1-Figure 2 The drying device 100 for the metallographic sample 5 according to the embodiment of the present utility model is described in detail.

[0035] like Figure 1 As shown, according to the blowing device 100 for the metallographic sample 5 according to the embodiment of the utility model, the blowing device 100 includes: a base 1, a blowing assembly 2 and a carrier assembly 4, the blowing assembly 2 includes a mounting arm 21 and a blowing head 22, the mounting arm 21 is connected to the base 1, the blowing head 22 is connected to the mounting arm 21, the blowing head 22 has an air inlet and an air blowing hole 221, the air inlet is suitable for communicating with the air source 3, the air blowing hole 221 is suitable for blowing air to the metallographic sample 5, the carrier assembly 4 includes a carrier base 41 and a stage 42, the carrier base 41 is connected to the base 1, the stage 42 is suitable for fixing the metallographic sample 5, the stage 42 is rotatably connected to the carrier base 41, and the rotation axis of the stage 42 is perpendicular to the axis of the air blowing hole 221.

[0036] The drying device 100 includes a base 1 and a blowing assembly 2. The blowing assembly 2 is arranged above the base 1, and the base 1 can be cast from cast iron. The cast iron is heavier, which is conducive to the stable operation of the blowing assembly 2 above the base 1. The blowing assembly 2 includes a mounting arm 21 and a blowing head 22. The mounting arm 21 is connected to the base 1. For example, the mounting arm 21 and the base 1 can be connected by bolts or by welding, but the present application is not limited thereto. The mounting arm 21 and the base 1 can also be connected by other means, as long as the mounting arm 21 and the base 1 are connected. The present application takes the mounting arm 21 and the base 1 being connected by bolts as an example for explanation. The mounting arm 21 and the base 1 are connected by bolts, which facilitates the disassembly and assembly of the mounting arm 21 and the base 1. A first cavity may be provided inside the base 1, and a second cavity may be provided inside the mounting arm 21. After the mounting arm 21 is connected to the base 1, the second cavity in the mounting arm 21 can be connected to the first cavity in the base 1, which facilitates the assembly of parts in the cavity of the mounting arm 21 and the base 1, so as to make the structure of the blowing-drying device 100 compact, realize the intensive space utilization of the blowing-drying device 100, and facilitate the subsequent maintenance work of the blowing-drying device 100. The mounting arm 21 may be an inverted "L"-shaped arm structure. After the mounting arm 21 is connected to the base 1 by bolts, an assembly space is formed between the mounting arm 21 and the base 1. The assembly space may be used to arrange the air blowing head 22 and the carrier assembly 4, so as to facilitate the installation and manufacturing of the drying device 100 and the operation of the operator.

[0037] The air blowing head 22 is connected to the mounting arm 21, and its position relative to the mounting arm 21 can be adjusted in the up and down directions. For example, the mounting arm 21 can have an internal thread, and the air blowing head 22 can have an external thread. The mounting arm 21 and the air blowing head 22 are connected by threads. When the distance between the air blowing head 22 and the metallographic sample 5 is small, the air blowing head 22 can be rotated to move the air blowing head 22 upward. When the distance between the air blowing head 22 and the metallographic sample 5 is large, the air blowing head 22 can be rotated in the opposite direction to move the air blowing head 22 downward, so that the air blowing head 22 can work at a suitable height.

[0038] The air blowing head 22 has an air inlet and an air blowing hole 221. The air inlet is suitable for communicating with the air source 3, and the air blowing hole 221 is suitable for blowing air toward the metallographic sample 5. By adjusting the height of the air blowing head 22, the distance between the air blowing hole 221 and the metallographic sample 5 can be adjusted. The gas of the air source 3 flows into the air blowing head 22 through the air inlet, flows out of the air blowing head 22 through the air blowing hole 221, and blows air toward the metallographic sample 5 at a suitable distance, thereby achieving the effect of the blow-drying device 100 blowing air stably toward the metallographic sample 5.

[0039] The blow-drying device 100 also includes a carrier assembly 4, which includes a carrier base 41 and a carrier table 42. The carrier base 41 is connected to the base 1. For example, the carrier base 41 and the base 1 can be welded or connected by bolts, but the present application is not limited to this. The carrier base 41 and the base 1 can also be connected by other means, as long as the carrier base 41 and the base 1 are connected. The present application takes the welding connection between the carrier base 41 and the base 1 as an example for explanation. The connection reliability of the welded carrier base 41 and the base 1 is higher, so as to reduce the risk of breakage at the connection between the carrier base 41 and the base 1, so that the carrier base 41 can stably play the role of the base and improve the structural stability of the blow-drying device 100.

[0040] The stage 42 is suitable for fixing the metallographic sample 5. The metallographic sample 5 can be clamped on the stage 42. The upper surface of the metallographic sample 5 can be located in the same plane or parallel to the upper surface of the stage 42. The stage 42 is rotatably connected to the stage base 41. By adjusting the relative position of the stage 42 and the stage base 41, the effect of adjusting the angle of the metallographic sample 5 can be achieved. The rotation axis of the stage 42 is perpendicular to the axis of the air hole 221, so that the angle between the upper surface of the metallographic sample 5 and the air flow blown out of the air hole 221 can be adjusted by rotating the stage 42.

[0041] It can be understood that the air flow blown out by the blowing head 22 flows downward along the axis of the blowing hole 221. During the process of the stage 42 rotating along its rotation axis, the upper surface of the metallographic sample 5 fixed on the stage 42 also rotates along the rotation axis of the stage 42 to adjust the angle between the upper surface of the metallographic sample 5 and the axis of the blowing hole 221, that is, to adjust the angle between the upper surface of the metallographic sample 5 and the air flow blown out of the blowing hole 221. The angle between the upper surface of the metallographic sample 5 and the axis of the blowing hole 221 can be adjusted to 65°~85°, so that the contaminants remaining in the gaps of the metallographic sample 5 can flow along the inside of the gaps under the blowing of the air flow and flow out at a suitable position (non-observation position), thereby reducing the risk of contaminants contaminating the surface of the metallographic sample 5 during the drying process.

[0042] For example, in the initial state, the upper surface of the stage 42 and the upper surface of the metallographic sample 5 are parallel to the horizontal plane. At this time, the upper surface of the metallographic sample 5 forms an angle of 90° with the axis of the blowing hole 221. When the upper surface of the metallographic sample 5 is adjusted to an angle of 15° with the horizontal plane by rotating the stage 42, the upper surface of the metallographic sample 5 forms an angle of 75° with the axis of the blowing hole 221. That is to say, the angle between the airflow blown out of the blowing hole 221 and the upper surface of the metallographic sample 5 is adjusted to 75°, so that the airflow blown out of the blowing hole 221 maintains a certain inclination angle with the upper surface of the metallographic sample 5, so that the contaminants remaining in the gaps of the metallographic sample 5 can flow along the inside of the gaps under the blowing of the airflow and flow out at a suitable position (non-observation position), thereby reducing the risk of contaminants contaminating the surface of the metallographic sample 5 during the drying process.

[0043] In a specific embodiment of the utility model, the blowing assembly 2 includes a mounting arm 21 and a blowing head 22. The mounting arm 21 is connected to the base 1 by bolts, and the blowing head 22 is screwed to the mounting arm 21. By rotating the blowing head 22, the effect of adjusting the blowing head 22 in the vertical direction can be achieved, so that the blowing head 22 can work at a suitable height. The air inlet of the blowing head 22 is connected to the air source 3, and the blowing hole 221 of the blowing head 22 blows air to the metallographic sample 5. The gas of the air source 3 can be stably blown to the metallographic sample 5 through the blowing head 22. The loading assembly 4 includes a loading base 41 and a loading table 42. The loading base 41 is welded to the base 1 to improve the connection reliability between the loading base 41 and the base 1, so that the loading base 41 can stably play a loading role. The metallographic sample 5 is clamped on the stage 42 and the upper surface of the metallographic sample 5 is located in the same plane or parallel to the upper surface of the stage 42. By adjusting the relative position of the stage 42 and the stage base 41, the effect of adjusting the angle of the metallographic sample 5 is achieved. The rotation axis of the stage 42 is perpendicular to the axis of the air blowing hole 221. By rotating the stage 42, the upper surface of the metallographic sample 5 fixed on the stage 42 can also rotate along the rotation axis of the stage 42 to adjust the angle between the upper surface of the metallographic sample 5 and the axis of the air blowing hole 221, so that the airflow blown out of the air blowing hole 221 maintains a certain inclination angle with the upper surface of the metallographic sample 5, so that the contaminants remaining in the gap of the metallographic sample 5 can flow along the inside of the gap under the blowing of the airflow and flow out at a suitable position (non-observation position), reducing the risk of contaminants contaminating the surface of the metallographic sample 5 during the drying process.

[0044] Therefore, when the stage 42 rotates along its rotation axis, the upper surface of the metallographic sample 5 fixed on the stage 42 also rotates along the rotation axis of the stage 42 to adjust the angle between the upper surface of the metallographic sample 5 and the axis of the blowing hole 221, that is, to adjust the angle between the upper surface of the metallographic sample 5 and the airflow blown out of the blowing hole 221, so that the contaminants remaining in the gaps of the metallographic sample 5 can flow along the inside of the gaps under the blowing of the airflow and flow out at a suitable position (non-observation position), thereby reducing the risk of contaminants contaminating the surface of the metallographic sample 5 during the drying process.

[0045] According to some embodiments of the present invention, the drying device 100 may further include: an airflow regulating component (not shown in the figure), which is used to regulate the gas flow from the air source 3 to the air inlet.

[0046] The drying device 100 may further include an airflow regulating component, which may be disposed between the air source 3 and the air inlet, and the airflow regulating component may regulate the flow rate of the air source 3 to the air inlet, thereby reducing the risk of contaminants splashing out due to excessive airflow velocity and contaminating the surface of the metallographic sample 5. Furthermore, by regulating the flow rate of the air source 3 to the air inlet, the pressure of the blown airflow may be regulated within the range of 0.0001MPa to 0.01MPa, which is conducive to the airflow blown out from the air hole 221 to be blown slowly and stably toward the metallographic sample 5, and the airflow pressure of the blown airflow from the air blowing head 22 may be adjusted according to actual needs through the airflow regulating component.

[0047] According to some embodiments of the present invention, Figure 1 As shown, the airflow regulating assembly may include: an airflow regulating valve (not shown in the figure) and an airflow regulating knob 6, the airflow regulating valve is arranged in the mounting arm 21, and the airflow regulating valve is connected between the air source 3 and the air inlet, the airflow regulating knob 6 is arranged on the outer side of the mounting arm 21, and the airflow regulating knob 6 is used to adjust the opening of the airflow regulating valve.

[0048] The airflow regulating assembly may include an airflow regulating valve and an airflow regulating knob 6. The airflow regulating valve is disposed in the second cavity of the mounting arm 21 and is connected between the gas source 3 and the air inlet. The airflow regulating valve is used to regulate the gas flow from the gas source 3 to the air inlet, which is conducive to the airflow blown out from the blowing hole 221 to be blown slowly and stably toward the metallographic sample 5. The airflow regulating knob 6 is used to regulate the opening of the airflow regulating valve. The airflow regulating knob 6 is disposed on the outside of the mounting arm 21. During the use of the drying device 100, the airflow regulating knob 6 needs to be rotated to adjust the opening of the airflow regulating valve, so as to adjust the gas flow from the gas source 3 to the air inlet by adjusting the opening of the airflow regulating valve. The airflow regulating knob 6 is disposed on the outside of the mounting arm 21 to facilitate the operator to rotate the airflow regulating knob 6 as needed.

[0049] Specifically, when the gas flow from the gas source 3 to the air inlet is too large, the operator can turn the airflow adjustment knob 6 to reduce the opening of the airflow adjustment valve. When the gas flow from the gas source 3 to the air inlet is too small, the operator can reversely turn the airflow adjustment knob 6 to increase the opening of the airflow adjustment valve, so that the airflow can be blown slowly and steadily toward the metallographic sample 5, which is conducive to allowing the contaminants remaining in the gaps of the metallographic sample 5 to flow along the inside of the gaps and flow out at the appropriate position, further reducing the risk of contaminants contaminating the surface of the metallographic sample 5 during the drying process.

[0050] According to some embodiments of the present invention, the drying device 100 may further include: a control component, the control component is used to control the on-off of the air source 3 to the air inlet.

[0051] The drying device 100 may further include a control component, which may be used to control the connection and disconnection of the air source 3 to the air inlet. When the drying device 100 is required to dry the pollutants remaining in the gaps on the upper surface of the metallographic sample 5, the control component may be used to control the connection of the air source 3 to the air inlet. After the pollutants remaining in the gaps on the upper surface of the metallographic sample 5 are dried, the control component may be used to control the disconnection of the air source 3 to the air inlet, and the drying device 100 stops the drying operation. Furthermore, the drying device 100 may be opened and closed as needed by controlling the control component.

[0052] According to some embodiments of the present invention, Figure 2 As shown, the control assembly may include: a solenoid valve 71 and a controller, wherein the solenoid valve 71 is disposed in the mounting arm 21 and connected between the air source 3 and the air inlet. At least part of the controller is disposed on the base 1, and the controller is used to control the opening and closing of the solenoid valve 71.

[0053] The control component may include a solenoid valve 71 and a controller. The solenoid valve 71 may be partially disposed in the second cavity of the mounting arm 21, or the solenoid valve 71 may be entirely disposed in the second cavity of the mounting arm 21. The solenoid valve 71 is connected between the air source 3 and the air inlet, and the effect of controlling the opening and closing of the air source 3 may be achieved through the solenoid valve 71. When the solenoid valve 71 is turned on, the air path between the air source 3 and the air inlet is opened, and the air source 3 supplies air to the air inlet, so that the blowing hole 221 blows out airflow and plays a drying role. When the solenoid valve 71 is disconnected, the air path between the air source 3 and the air inlet is disconnected, and the blowing hole 221 stops blowing air.

[0054] At least part of the controller is disposed in the first cavity of the base 1. For example, the controller may be partially disposed in the first cavity of the base 1, or the controller may be entirely disposed in the first cavity of the base 1. The controller is used to control the opening and closing of the electromagnetic valve 71. When the drying device 100 is required to dry the contaminants remaining in the gaps on the upper surface of the metallographic sample 5, the electromagnetic valve 71 is turned on by controlling the controller, the air path between the air source 3 and the air inlet is opened, and the air hole 221 starts to blow air. When the contaminants remaining in the gaps on the upper surface of the metallographic sample 5 are dried, the electromagnetic valve 71 is disconnected by controlling the controller, the air path between the air source 3 and the air inlet is disconnected, and the air hole 221 stops blowing air.

[0055] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the controller has a start button 721 and a stop button 722 . The start button 721 is used to open the solenoid valve 71 , and the stop button 722 is used to close the solenoid valve 71 .

[0056] Among them, the controller has a start button 721 and a stop button 722. When the operator presses the start button 721, the controller controls the solenoid valve 71 to open, so that the air path between the air source 3 and the air inlet is connected, the blowing hole 221 starts blowing, and the drying device 100 starts to perform the drying work.

[0057] After the drying work of the drying device 100 is completed, the operator presses the stop button 722, and the controller controls the solenoid valve 71 to close, so that the air path between the air source 3 and the air inlet is disconnected, the air hole 221 stops blowing, and the drying device 100 stops drying. The drying device 100 can be flexibly controlled by the start button 721 and the stop button 722 of the controller, simplifying the use process of the drying device 100.

[0058] According to some embodiments of the present invention, Figure 1 As shown, the controller also has a timing control knob 723, and the timing control knob 723 is used to close the solenoid valve 71 at a certain time.

[0059] The controller may further include a timing control knob 723, which is disposed on the outside of the mounting arm 21, so that the operator can directly operate the timing control knob 723. The timing control knob 723 is used to time the closing of the solenoid valve 71. The operator can set the timing time by turning the timing control knob 723, at which time the solenoid valve 71 is opened. When the timing time ends, the timing control knob 723 turns back to the initial position and controls the closing of the solenoid valve 71. By setting the timing control knob 723, it is helpful to accurately control the drying time of the drying device 100 from tens of seconds to tens of minutes or even longer, so as to realize the timed closing of the drying device 100, so as to facilitate the use of the drying device 100.

[0060] In a specific embodiment of the present invention, referring to Figure 1 and Figure 2 As shown, the control component includes: a controller and a solenoid valve 71, and the controller includes: a control circuit 724, a power supply circuit 725, a first relay, a second relay, a start button 721, a stop button 722, a timed start button 726 and a timing control knob 723, wherein the control circuit 724, the power supply circuit 725, the first relay, the second relay, the start button 721, the stop button 722 and the timed start button 726 can all be installed on the base 1, and parts of the start button 721, the stop button 722 and the timed start button 726 can be set on the outside of the base 1, and the timing control knob 723 can be installed on the mounting arm 21 for the convenience of the operator. In addition, the start button 721, the stop button 722 and the timed start button 726 can all be set in the form of button switches in the control circuit 724, and the solenoid valve 71 is set in the power supply circuit 725.

[0061] The first relay may include a first coil 731, a first switch 732 and a second switch 733. The first coil 731 may control the opening and closing of the first switch 732 and the second switch 733. The first coil 731 and the first switch 732 are arranged in the control circuit 724, and the second switch 733 is arranged in the power supply circuit 725. When the first coil 731 is powered on, the first coil 731 may control the first switch 732 and the second switch 733 to be closed. When the first coil 731 is powered off, the first coil 731 may control the first switch 732 and the second switch 733 to be opened.

[0062] The second relay may include a second coil 741, a third switch 742 and a fourth switch 743. The second coil 741, the third switch 742 and the fourth switch 743 are all arranged in the control circuit 724. The second coil 741 can control the opening and closing of the third switch 742 and the fourth switch 743. When the second coil 741 is energized, the timing control knob 723 can control the timing opening of the third switch 742 and the fourth switch 743 through the second coil 741.

[0063] Furthermore, the drying device 100 further includes a plug 75 and a power module 76. The plug 75 can be connected to a 220V mains power supply. The control circuit 724 is electrically connected to the plug 75 through the power module 76. The power module 76 can convert the 220V mains power supply into a 12V or 24V direct current power and supply power to the control circuit 724, thereby reducing the risk of electric shock when the operator operates the drying device 100 and improving the working safety of the drying device 100. The solenoid valve 71 is adapted to be electrically connected to the plug 75 through the power supply circuit 725.

[0064] When the operator presses the start button 721, the start button 721 in the normally open state becomes a closed state, the start button 721 connects the circuits on both sides, the first coil 731 is powered on, the first coil 731 controls the first switch 732 and the second switch 733 to close, the first switch 732 is connected in parallel with the start button 721, after releasing the start button 721, the start button 721 returns to the normally open state, the first coil 731 can maintain the powered on state through the first switch 732, and at the same time, the second switch 733 maintains the closed state, the normally closed solenoid valve 71 is powered on and opened, and the blow-drying device 100 maintains the blowing state.

[0065] When the operator presses the stop button 722, the normally closed stop button 722 is disconnected, the first coil 731 is powered off and disconnected, the first coil 731 controls the first switch 732 and the second switch 733 to be disconnected, the stop button 722 is released, the stop button 722 returns to the normally closed state, and at the same time, the solenoid valve 71 is powered off and returns to the normally closed state, and the blow-drying device 100 stops blowing. The start button 721 and the stop button 722 can realize the blow-drying device 100 to work in a non-timing mode.

[0066] When the blow-drying device 100 needs to work on a timer, the operator can first turn the timing control knob 723 to adjust the timing off time, and then press the timing start button 726, and the timing start button 726 in the normally open state becomes a closed state. At this time, the first coil 731 and the second coil 741 are both powered on, and the first coil 731 controls the first switch 732 and the second switch 733 to be closed, and the solenoid valve 71 is opened, and the blow-drying device 100 maintains the blowing state. Release the timing start button 726, and the timing start button 726 returns to the normally open state, and the blow-drying device 100 still maintains the blowing state. When the timing time ends, the timing control knob 723 turns back to the initial position and the second coil 741 controls the normally closed third switch 742 and the fourth switch 743 to be disconnected, and the first coil 731 is powered off as the third switch 742 is disconnected. The first coil 731 controls the first switch 732 and the second switch 733 to be disconnected, and the solenoid valve 71 is powered off and restored to normally closed, and the blow-drying device 100 stops blowing, thereby realizing the timing operation of the blow-drying device 100. The circuit design of the controller is simple, the operation is easy, and the difficulty of using the blow-drying device 100 is reduced.

[0067] According to some embodiments of the present invention, Figure 1 As shown, the stage 42 may include a clamping portion 421 and a rotating portion 422 that are fixedly connected. The clamping portion 421 is suitable for clamping and fixing the metallographic sample 5. The rotating portion 422 is rotatably connected to the stage base 41. The stage base 41 has an adjusting portion 411, and the adjusting portion 411 is used to adjust the rotation angle of the rotating portion 422.

[0068] Among them, the worktable 42 may include a clamping portion 421 and a rotating portion 422 that are fixedly connected. The clamping portion 421 and the rotating portion 422 may be integrally formed, or the clamping portion 421 and the rotating portion 422 may be welded and connected. The present application takes the integrally formed clamping portion 421 and the rotating portion 422 as an example for explanation, which is beneficial to improving the structural stability of the worktable 42 and reducing the risk of cracking at the connection between the clamping portion 421 and the rotating portion 422. The clamping portion 421 is suitable for clamping and fixing the metallographic sample 5. The clamping portion 421 may have a clamping knob 4211. By rotating the clamping knob 4211, the tightness of the clamping portion 421 can be adjusted. For example, the clamping knob 4211 is connected to a screw with an external thread. The two sides of the clamping portion 421 are respectively provided with two clamping members 423. At least one of the two clamping members 423 cooperates with the screw thread. By rotating the clamping knob 4211, the screw can drive the two clamping members 423 to move closer to or away from each other, thereby achieving that the clamping portion 421 is suitable for clamping and fixing metallographic samples 5 of different sizes.

[0069] The rotating part 422 is rotatably connected to the carrier base 41, and the carrier base 41 has an adjusting part 411, and the adjusting part 411 is used to adjust the rotation angle of the rotating part 422. For example, the rotating part 422 may include a worm gear, and the adjusting part 411 may include a worm, and the effect of adjusting the angle of the rotating part 422 can be achieved by meshing the worm gear and the worm. Alternatively, the rotating part 422 may have a slider, and the adjusting part 411 may be set as an arc-shaped slide rail, and the effect of adjusting the angle of the rotating part 422 can be achieved by the relative sliding of the slider and the slide rail, and the clamping part 421 clamping and fixing the metallographic sample 5 can improve the stability of the metallographic sample 5 and reduce the risk of airflow deviation caused by manual operation.

[0070] Furthermore, the metallographic sample 5 is usually irregular in shape. In order to stably clamp and fix the metallographic sample 5, an inlay may be provided. The inlay may be provided with a mounting groove. The shape of the mounting groove matches the shape of the metallographic sample 5. The metallographic sample 5 is assembled in the mounting groove of the inlay. The clamping part 421 can clamp the inlay to achieve the effect of fixing the metallographic sample 5, thereby reducing the risk of the clamping part 421 directly clamping the metallographic sample 5 and causing damage to the surface of the metallographic sample 5. The inlay may be made of acrylic material, plastic material, etc., and the effect of transferring the metallographic sample 5 is achieved by taking the inlay, thereby reducing the risk of directly taking the metallographic sample 5 and causing the metallographic sample 5 to be contaminated.

[0071] According to some embodiments of the present invention, the rotating portion 422 includes a worm gear, the adjusting portion 411 includes a worm, and the worm gear is meshed with the worm.

[0072] The rotating part 422 may include a worm gear, and the adjusting part 411 may include a worm, and the meshing of the worm gear and the worm gear may achieve the effect of adjusting the angle of the rotating part 422. Specifically, by rotating the adjusting part 411 to rotate the worm gear, the worm gear rotates and drives the rotating part 422 to rotate to a suitable angle, thereby achieving the effect of adjusting the angle of the stage 42, and then adjusting the metallographic sample 5 and the air blowing head 22 to a suitable angle.

[0073] According to some embodiments of the present invention, the drying device 100 may further include a filter assembly 8, which is connected to the base 1 and / or the mounting arm 21, and is connected between the air source 3 and the air inlet.

[0074] Among them, the drying device 100 can also include a filter assembly 8, which can filter the gas of the air source 3. The filter assembly 8 is connected between the air source 3 and the air inlet, which is conducive to filtering the power compressed air flowing out of the air source 3 into clean and dry drying air, so that the drying device 100 will not cause secondary pollution to the metallographic sample 5 during the process of drying the metallographic sample 5. The filter assembly 8 is connected to the base 1 and / or the mounting arm 21, for example: the filter assembly 8 is connected to the base 1 or the filter assembly 8 is connected to the mounting arm 21, or the filter assembly 8 is connected to both the base 1 and the mounting arm 21. This application takes the example that the filter assembly 8 is connected to both the base 1 and the mounting arm 21 to illustrate, improve the position stability of the filter assembly 8, reduce the risk of the filter assembly 8 falling off due to the continuous impact of the power compressed air, so that the filter assembly 8 can stably play a filtering role, and further reduce the risk of the metallographic sample 5 being subjected to secondary pollution.

[0075] Further, the filter assembly 8 may include an air drying filter and an aluminum alloy cover. The air drying filter may dry and filter the gas of the gas source 3. The aluminum alloy cover is fixedly sleeved on the outside of the air drying filter so that the air drying filter can work stably. The aluminum alloy cover may be matched with the threaded hole of the mounting arm 21 by screws to achieve the effect of fixing the filter assembly 8 to the mounting arm 21.

[0076] In the related technology, there are two commonly used methods for drying metallographic samples:

[0077] 1. Use a hair dryer or a device similar to a hair dryer to dry it. However, the wind force of this method is not concentrated enough to blow out the residual acid or moisture in the gaps of the metallographic specimen. In order to blow out the moisture in the gaps, a relatively fine air flow is required and the air flow must be slow and stable, which a hair dryer or a hair dryer-like device cannot do.

[0078] 2. Use factory or laboratory powered compressed air as a drying method. This method can achieve a slow and relatively stable thin airflow by adjusting the size of the pressure reducing valve and the nozzle of the air gun. However, this powered air drying method has two very obvious defects: a. The cleanliness and dryness of the powered air often fail to meet the standards, so secondary contamination of metallographic specimens often occurs during the drying process; b. Some gap-type metallographic specimens (in fact, most metallographic specimens have gaps in the sample preparation process) require a very small airflow for a long time during the drying process. Sometimes it takes more than half an hour or even longer to blow out the residual acid and moisture deep in the gap. Otherwise, the residual moisture and acid will re-contaminate the surface of the metallographic specimen through capillary phenomena after several hours or even longer, but the operator's work intensity of blowing for half an hour is too high.

[0079] After a period of time, pollutants will slowly seep out of the gaps of metallographic specimens that have not been thoroughly dried and contaminate the edge surface of the metallographic specimens. It takes a long time for pollutants to slowly seep out from the edge of the sample where there are gaps on the surface of the sample, generally up to 20-60 hours. The reason for this is that the pollutants in the grinding or corrosion process combine with the residual water or acid in the deep gaps, and slowly seep out using the capillary phenomenon. During the cleaning process, an ultrasonic cleaner can be used to replace the acid in the deep gaps with water, and then use slow airflow and a long time to evaporate the water at the edge of the gap in the form of water molecules to avoid carrying pollutants during water seepage. Finally, the pollutants are dried deep in the gaps so that they do not overflow on the surface edge of the metallographic specimen. It should be noted that if the drying method is used, the thermal expansion and contraction will cause more and faster water and pollutants to overflow the sample surface. Therefore, the use of cold airflow slow evaporation is a very good and necessary choice, but the problem is that it requires a long time and a suitable diversion angle.

[0080] In addition, residual corrosive liquid and moisture are best to flow along the inside of the gap during the process of blowing out, and finally flow out through an unimportant position on the sample surface, minimizing the contamination of the sample surface during the outflow process. This requires the operator to choose a suitable angle and direction between the air gun muzzle and the sample gap to achieve reasonable flow diversion. The human hand can easily shake during the holding process, causing the airflow to blow off and contaminate the sample.

[0081] In view of the shortcomings in the above situation, the present application designs a set of devices to achieve improvements in the powered compressed air drying method.

[0082] In some embodiments of the present invention, the method of using the drying device 100 includes the following steps:

[0083] Step S1, after the metallographic sample 5 is ultrasonically cleaned, the filtered and dried compressed air is used to quickly dry the surface moisture of the metallographic sample 5 to prevent the surface of the metallographic sample 5 from rusting and oxidation due to the moisture.

[0084] Step S2, place the metallographic sample 5 after simple blow drying on the clamping part 421, and rotate the angle of the metallographic sample 5 so that the gap on the upper surface of the metallographic sample 5 and the upper surface of the stage 42 are located in the same plane or parallel, and then rotate the clamping knob 4211 to lock the clamping part 421, so that the clamping part 421 fixes the metallographic sample 5.

[0085] Step S3, adjusting the angle of the stage 42 so that the metallographic sample 5 forms an angle of 15 degrees with the horizontal direction.

[0086] Step S4, adjusting the timing control knob 723 to set the time to 40 minutes.

[0087] Step S5, adjust the air flow adjustment component to set the air pressure to 0.001 MPa

[0088] Step S6, press the timing switch 726 button, then the air blowing head 22 starts to blow dry the sample with a slow airflow, and the countdown starts. After about 10 seconds, adjust the airflow adjustment component to set the air pressure to 0.003MPa. At this time, the operator can leave the drying device 100 to do other work. At this time, the angle adjustment and fixation stability between the upper surface of the metallographic sample 5 and the axis of the air blowing hole 221 are much better than manual operation. After 45 minutes, the timer buzzer sounds and the drying device 100 automatically shuts down. At this time, the operator removes the metallographic sample 5 from the stage 42 and puts it into the drying box to wait for detection.

[0089] Step S7, installing the next metallographic sample 5 or ending the experiment.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0091] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drying device for metallographic samples, characterized in that: include: Base (1); A blowing assembly (2), the blowing assembly (2) comprising a mounting arm (21) and a blowing head (22), the mounting arm (21) being connected to the base (1), the blowing head (22) being connected to the mounting arm (21), the blowing head (22) having an air inlet and an air blowing hole (221), the air inlet being suitable for being connected to an air source (3), and the air blowing hole (221) being suitable for blowing air toward the metallographic sample (5); A loading assembly (4), the loading assembly (4) comprising a loading base (41) and a loading platform (42), the loading base (41) being connected to the base (1), the loading platform (42) being suitable for fixing the metallographic sample (5), the loading platform (42) being rotatably connected to the loading base (41), and the rotation axis of the loading platform (42) being perpendicular to the axis of the blowing hole (221).

2. The drying device for metallographic samples according to claim 1, characterized in that: Also includes: An airflow regulating component, wherein the airflow regulating component is used to regulate the gas flow from the air source (3) to the air inlet.

3. The drying device for metallographic samples according to claim 2, characterized in that: The airflow adjustment assembly comprises: An air flow regulating valve, the air flow regulating valve being arranged in the mounting support arm (21), and the air flow regulating valve being connected between the air source (3) and the air inlet hole; An airflow regulating knob (6), wherein the airflow regulating knob (6) is arranged on the outside of the mounting arm (21), and the airflow regulating knob (6) is used to adjust the opening of the airflow regulating valve.

4. The drying device for metallographic samples according to any one of claims 1 to 3, characterized in that: Also includes: A control component, wherein the control component is used to control the on-off of the air source (3) to the air inlet.

5. The drying device for metallographic samples according to claim 4, characterized in that: The control component comprises: A solenoid valve (71), the solenoid valve (71) being arranged in the mounting arm (21), and the solenoid valve (71) being connected between the air source (3) and the air inlet; A controller, at least part of which is arranged on the base (1), and the controller is used to control the opening and closing of the solenoid valve (71).

6. The drying device for metallographic samples according to claim 5, characterized in that: The controller has a start button (721) and a stop button (722), wherein the start button (721) is used to open the solenoid valve (71), and the stop button (722) is used to close the solenoid valve (71).

7. The drying device for metallographic samples according to claim 6, characterized in that: The controller also has a timing control knob (723), and the timing control knob (723) is used to close the solenoid valve (71) at a certain time.

8. The drying device for metallographic samples according to claim 1, characterized in that: The stage (42) comprises a clamping portion (421) and a rotating portion (422) which are fixedly connected to each other. The clamping portion (421) is suitable for clamping and fixing the metallographic sample (5). The rotating portion (422) is rotatably connected to the stage base (41). The stage base (41) has an adjusting portion (411) which is used to adjust the rotation angle of the rotating portion (422).

9. The drying device for metallographic samples according to claim 8, characterized in that: The rotating part (422) includes a worm wheel, the adjusting part (411) includes a worm, and the worm wheel meshes with the worm.

10. The drying device for metallographic samples according to claim 1, characterized in that: It also comprises a filter assembly (8), wherein the filter assembly (8) is connected to the base (1) and / or the mounting arm (21), and the filter assembly (8) is connected between the air source (3) and the air inlet.

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