A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material

Abstract

The present invention discloses a test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorption material, specifically relating to the technical field of test tube racks, which includes a placement rack, a number of test tube bodies, and a number of centering rack cylinders, and the centering rack cylinders are used to place the test tube bodies in the placement rack; a bottom support assembly, which is used to protect the bottom of the test tube bodies in the placement rack to ensure the stable preparation of the materials in the test tube bodies. The bottom support assembly includes a fixed rack fixedly connected in the placement rack and a bottom support cylinder sleeved outside the test tube bodies. Through the setting of the bottom support assembly, the present invention can protect the test tube bodies in the placement rack, ensure the stable placement of the test tube bodies in the placement rack, avoid the situation that the bottom of the test tube bodies is directly exposed on the hard surface of the placement rack, which is likely to cause the test tubes to break or crack due to collision, friction or uneven pressure, is beneficial to the safe placement of the test tube bodies by the placement rack, thereby improving the experimental process and being beneficial to the preparation of the materials in the test tube bodies.

Description

Technical Field

[0001] The present invention relates to the technical field of test tube racks, and particularly relates to a test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material. Background Art

[0002] Acrylic acid is an organic compound. Due to the presence of carbon-carbon double bonds and carboxyl groups in the molecular structure of acrylic acid, the chemical properties of acrylic acid are very active and can undergo various chemical reactions such as reduction reactions, esterification reactions, and addition reactions. Therefore, specific fillers are added to the acrylic matrix to endow the material with good heat conductivity and electromagnetic wave absorption ability; during the preparation of the material, test tubes or other reaction vessels are needed to more conveniently and precisely control the reaction conditions. Since different reaction materials need to be poured into the container, a test tube rack is required to stably fix the test tube or other reaction vessels to prevent movement or tipping during heating or stirring, thus ensuring the smooth progress of the experiment; during the current material preparation process, containers of different sizes are used for preparation. Therefore, a regulating rack in the test tube rack is adopted to adjust according to containers of different sizes to facilitate the stable placement of containers of different sizes on the test tube rack; since there are many containers on the test tube rack and in order to precisely control the reaction conditions of the material, the containers are in a suspended state on the test tube rack. Therefore, the bottom of the test tube is directly exposed to the hard surface of the test tube rack, and it is easy to cause the test tube to break or crack due to collision, friction, or uneven pressure, affecting the experimental process and even causing potential safety hazards, reducing the safe placement of the test tube by the test tube rack. Summary of the Invention

[0003] The purpose of the present invention is to provide a test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material to solve the above-mentioned deficiencies in the technology.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material, comprising a placement rack, a plurality of test tube bodies, and a plurality of centering rack cylinders, and the centering rack cylinders are used for placing the test tube bodies in the placement rack;

[0005] The bottom support assembly is used to protect the bottom of the test tube body in the placement rack, ensuring the stable preparation of the materials in the test tube body. The bottom support assembly includes a fixed frame fixedly connected in the placement rack and a bottom support cylinder sleeved outside the test tube body. A bracket is fixedly connected to one side of the fixed frame close to the bottom support cylinder. A magnetic attraction cylinder is fixedly connected to the outside of the bottom support cylinder. A magnetic attraction sliding column is magnetically attracted in the magnetic attraction cylinder. A centering hole for the up and down movement of the magnetic attraction sliding column is opened in the middle of the inside of the bracket. A moving-away assembly is provided between the fixed frame and the bracket for driving the magnetic attraction sliding column and the magnetic attraction cylinder to move. The moving-away assembly is used to move the bottom support cylinder up, down, left and right outside the bracket. A limiting sleeve is rotatably connected in the centering frame cylinder. A limiting assembly is arranged in the centering frame cylinder and is matched with the limiting sleeve. The limiting assembly is used to accurately place test tube bodies of different sizes in the limiting sleeve and the bottom support cylinder. A rotating assembly for connection is arranged between the moving-away assembly and the limiting sleeve. The rotating assembly is used to drive the limiting sleeve to rotate in the centering frame cylinder and shake and mix the materials in the test tube body. And the top end of the magnetic attraction sliding column is inserted into the bottom end of the magnetic attraction cylinder, and the top end of the magnetic attraction sliding column is located inside the magnetic attraction cylinder. At this time, the magnetic attraction sliding column and the magnetic attraction cylinder are magnetically connected, which is beneficial to keeping the bottom support cylinder on the magnetic attraction cylinder stable, so that the bottom support cylinder stably wraps the bottom of the test tube body. Moreover, the bracket is in a frame structure, so that the top and the middle of the bracket are in a hollow state, ensuring the good operation of the rest of the structures inside the bracket. At the same time, the fixed frame is in an L-shaped structure, so that the fixed frame is installed inside the placement rack, and there is a distance between the fixed frame and the placement rack, ensuring the stable installation of the rest of the structures on the fixed frame and avoiding interference between each other.

[0006] Preferably, the moving-away assembly includes a mounting seat fixedly connected to the end of the magnetic attraction sliding column away from the magnetic attraction cylinder, a telescopic motor fixedly connected to one side of the fixed frame close to the placement rack, and a moving plate fixedly connected to the telescopic end of the telescopic motor. The telescopic motor is used to drive the moving plate to move left and right along one side of the fixed frame. A connecting shaft column is installed on one side of the moving plate. A swing arm is movably connected between the connecting shaft column and the mounting seat. And there is a distance between the moving plate and the bracket, and the distance between them is convenient for the up and down movement of the magnetic attraction sliding column, avoiding interference between the bottom of the magnetic attraction sliding column and the top of the moving plate, so that the magnetic attraction sliding column can move stably along one side of the fixed frame. During this process, the moving-away assembly is used to move the bottom support cylinder and the test tube body up and down, facilitating the quick separation between the bottom support cylinder and the test tube body and the subsequent processing of the materials in the test tube body. And the rest of the test tube bodies in the placement rack can still be protected by the bottom support cylinder when not being processed, ensuring the safety of the material preparation in the test tube body.

[0007] Preferably, the moving-away component further includes a first contact plate fixedly connected to the side of the magnetic attraction sliding column close to the magnetic attraction cylinder, a second contact plate slidably connected in the bracket, and a contact groove opened in the middle of the interior of the bracket and communicating with the interior of the centering hole for the magnetic attraction cylinder to abut against. The magnetic attraction cylinder is slidably connected in the contact groove and the bracket. A sliding groove communicating with the interior of the centering hole for the first contact plate to move is opened in the bracket. One end of the second contact plate away from the first contact plate is fixedly connected with a centering column, and one end of the centering column penetrates through the bracket. A first spring is fixedly connected between the second contact plate and the bracket, and the first spring is sleeved outside the centering column. A short-range component for cooperating with the second contact plate is arranged between the bracket and the moving plate, so as to stably fit the magnetic attraction cylinder and the second contact plate, ensuring that the magnetic attraction cylinder stably moves to the required position in the bracket; and the second contact plate and the first contact plate are in slope cooperation, so that the first contact plate moves upward or downward to abut against one side of the second contact plate and push the second contact plate to move in the bracket. Moreover, due to the slope setting of the second contact plate, after the second contact plate contacts with the magnetic attraction cylinder, a point contact is achieved between the second contact plate and the magnetic attraction cylinder, and there is a distance between the second contact plate and the magnetic attraction cylinder, which is convenient for the top of the first contact plate to be inserted into this distance to complete the slope cooperation between the first contact plate and the second contact plate, avoiding mutual interference between each other, and being beneficial to the stable operation of the whole; during this process, the second contact plate can cooperate with the magnetic attraction cylinder moving up and down, so that the magnetic attraction cylinder falls into the contact groove and separates from the magnetic attraction sliding column. Subsequently, the second contact plate pushes the magnetic attraction cylinder to move out along the contact groove and move towards the interior of the bracket under the elastic action of the first spring, so that the bottom support cylinder moves left and right in the bracket. Therefore, there is a distance between the bottom support cylinder and the test tube body, enabling the materials inside the test tube body to maintain good fit with the heating device during heating preparation. Moreover, the up, down, left and right movement of the bottom support cylinder can prevent the heating device from making hard contact with the bottom of the test tube body, resulting in damage caused by collision of the bottom of the test tube body, ensuring the stable preparation of the materials inside the test tube body; in addition, the centering column is used to limit the telescopic movement of the first spring in the bracket, avoiding the bending of the first spring during telescopic movement, ensuring good cooperation between the second contact plate, the first contact plate and the magnetic attraction cylinder, enabling the magnetic attraction cylinder to move automatically during movement, reducing manual intervention, and improving the flexibility of the device.

[0008] Preferably, the short-range component includes a column fixedly connected to one side of the moving plate and a contact ring slidably connected in the bracket and cooperating with the magnetic suction cylinder. A guiding groove communicating with the inside thereof is formed in one side of the bracket. A guiding block is slidably connected in the guiding groove, and the guiding block is used to drive the contact ring to move. A guiding frame for connection is arranged between the column and the bracket. One end of the guiding block extends to the outside of the guiding groove and is fixed with a short-range column. A short-range groove for the short-range column to move is formed at the top of the guiding frame. An anti-pushing component cooperating with the guiding block is arranged in the guiding groove, and the anti-pushing component is used to push the magnetic suction cylinder to move back to its original position; and the contact ring and the magnetic suction cylinder are in contact with each other under the push of the second contact plate. Then, the contact ring is used to guide the movement of the magnetic suction cylinder in the bracket, so that the magnetic suction cylinder can stably move in the bracket, which is beneficial to the magnetic suction cylinder stably moving to the required position in the bracket.

[0009] Preferably, the anti-pushing component includes an anti-pushing block slidably connected in the guiding groove and in contact with the guiding block, and an arc-shaped frame fixedly connected to one end of the anti-pushing block. The arc-shaped frame is located in the bracket and is in contact with the magnetic suction cylinder. A fixing plate is fixedly connected to one side of the bracket. One end of the anti-pushing block extends to the outside of the guiding groove and is fixed with an anti-pushing column, and one end of the anti-pushing column penetrates through the fixing plate. A second spring is jointly connected between the anti-pushing block and the fixing plate, and the second spring is sleeved outside the anti-pushing column; and a through groove for the contact ring to pass through is formed inside the arc-shaped frame, so that the contact ring and the arc-shaped frame cooperate with each other to push the magnetic suction cylinder in the bracket for the second time, and it can be ensured that the magnetic suction cylinder is accurately pushed into the inside of the contact groove in the bracket, ensuring the stable connection between the magnetic suction cylinder and the magnetic suction sliding column; at the same time, the second spring can cooperate with the first spring, so that when the first spring pushes the magnetic suction cylinder to move, the arc-shaped frame contacts the magnetic suction cylinder under the elastic force of the second spring and generates a reaction force on the magnetic suction cylinder under the push of the second contact plate, so that the magnetic suction cylinder can stably move in the bracket, so that the magnetic suction cylinder can be automatically moved back to its original position in the bracket, and the position of the magnetic suction cylinder can be freely adjusted according to the needs, so that the bottom support cylinder can independently select the test tube body to be protected, ensuring the safety protection of the test tube body in the placement rack.

[0010] Preferably, the limiting component includes a moving groove formed in the limiting sleeve. A plurality of contact rings are slidably connected in the moving groove. One side of each of the plurality of contact rings is attached to the outer surface of the test tube body. Two symmetric guiding grooves are formed on one side of each contact ring. Two symmetric positioning columns are fixedly connected in the moving groove, and the two positioning columns are inserted into the two guiding grooves. Two third springs are connected between the two guiding grooves and the two positioning columns. Moreover, the limiting sleeve is located above the bottom supporting tube, so that the bottom supporting tube and the limiting sleeve maintain two-point limitation on the test tube body in the placement rack, enabling the test tube body to maintain an upright state in the placement rack, facilitating the experimenter to observe the reaction process at any time and record data, and contributing to subsequent analysis and optimization of the preparation. And under the action of the third spring, the contact ring can increase the elastic self-adaptive force with the test tube body. Therefore, it can adapt to test tube bodies of different shapes and sizes, improving the versatility of the experimental equipment. In addition, the elastic contact between the contact ring and the test tube body makes it easier to adjust the relative position between the limiting sleeve and the test tube body, facilitating the experimenter to change the reaction conditions or perform other operations as needed. Moreover, each time the test tube body is adjusted in the limiting sleeve, wear and scratches can be reduced, extending the service life of the test tube and maintaining its integrity.

[0011] Preferably, the plurality of contact rings are arranged in a circular array in the limiting sleeve, and the top of the contact ring is of an arc structure. And the top of the contact ring and the bottom of the test tube body are in arc fit, avoiding the situation of excessive extrusion between the contact ring and the bottom of the test tube body and causing damage, ensuring that the test tube body can be stably placed inside the third spring and ensuring the safe preparation of the materials in the test tube body.

[0012] Preferably, the rotating component includes an adapter plate fixedly connected to one end of the centering column and a toothed ring sleeved on the top of the limiting sleeve. A moving groove for the adapter plate to move is formed on one side of the placement rack. One end of the adapter plate penetrates through the moving groove and is fixed with a rack, and the rack is slidably connected with the placement rack. An engaging groove for the toothed ring and the rack to engage is formed on one side of the placement rack close to the moving groove. It is convenient to cooperate with the user and facilitate the mixing of materials, enabling the reactants to be more evenly mixed in the test tube body, promoting the mass diffusion between the reactants, making the wave-absorbing agent and the heat-conducting filler better contact with the matrix material, thereby improving the heat-conducting and wave-absorbing properties of the composite material, shortening the preparation reaction time of the material in the test tube body, and improving the overall efficiency of the experiment.

[0013] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0014] Through the setting of the bottom support component, the protection of the test tube body in the placement rack can be realized, ensuring the stable placement of the test tube body in the placement rack, avoiding the direct exposure of the bottom of the test tube body on the hard surface of the placement rack, and preventing the situation that the test tube breaks or cracks easily due to collision, friction or uneven pressure. This is beneficial to the safe placement of the test tube body by the placement rack, thus improving the experimental process and facilitating the preparation of materials in the test tube body.

[0015] Through the setting of the removal component, the bottom support cylinder and the test tube body, the bottom support cylinder can move up and down and left and right at the bottom of the test tube body. Therefore, a proper distance is maintained between the bottom support cylinder and the test tube body during movement, enabling the materials inside the test tube body to fit well with the heating device during heating preparation. In addition, the up, down, left and right movement of the bottom support cylinder can prevent the hard contact between the heating device and the bottom of the test tube body, avoiding the damage caused by the collision of the bottom of the test tube body and ensuring the stable preparation of the materials inside the test tube body.

[0016] Through the setting of the short-range component, the magnetic attraction cylinder and the removal component, the magnetic attraction cylinder can be guided to move in the bracket, enabling the magnetic attraction cylinder to move stably and guided in the bracket, which is beneficial for the magnetic attraction cylinder to move stably to the required position in the bracket.

[0017] Through the setting of the reverse push component, the magnetic attraction cylinder, the bottom support cylinder, the bracket and the removal component, the magnetic attraction cylinder can be moved and reset in the bracket, ensuring the consistency and accuracy of each operation between the bottom support cylinder and the test tube body, avoiding the uneven contact or position deviation between the bottom of the test tube body and the bottom support cylinder, thus saving the time and effort required for adjustment between the bottom support cylinder and the test tube body, improving the safety of the test tube body placed in the placement rack, and further enhancing the overall efficiency of the experiment.

[0018] Through the setting of the bottom support cylinder, the limit sleeve and the test tube body, the test tube body can be restricted at two points in the placement rack, keeping the test tube body upright in the placement rack, facilitating the experimenter to observe the reaction process at any time and record data, and contributing to subsequent analysis and optimization of the preparation.

[0019] Through the setting of the limiting component, the limit sleeve and the test tube body, an elastic adaptive force can be increased between the limiting component and the test tube body. Therefore, it can adapt to test tube bodies of different shapes and sizes, which is beneficial to the flexibility of the test tube body placed in the placement rack and improves the versatility of the experimental equipment.

[0020] Through the settings of the rotating assembly, centering column, limiting sleeve and test tube body, the rotating assembly drives the circumferential movement of the limiting sleeve under the horizontal movement of the centering column, which is convenient for cooperation with the user and convenient for material mixing. It can make the reactants mix more evenly in the test tube body, promote the mass diffusion between the reactants, shorten the preparation reaction time of the materials in the test tube body, and improve the overall efficiency of the experiment. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the overall structure of the present invention;

[0023] Figure 2 Schematic diagram of the assembly structure of the magnetic attraction sliding column and the magnetic attraction cylinder of the present invention;

[0024] Figure 3 Schematic diagram of the magnetic attraction sliding column sliding into the centering hole of the present invention;

[0025] Figure 4 Partial cross-sectional view of the bracket of the present invention;

[0026] Figure 5 Schematic diagram of the magnetic attraction sliding column of the present invention;

[0027] Figure 6 Exploded view of the short-range assembly of the present invention;

[0028] Figure 7 Exploded view of the reaction pushing assembly of the present invention;

[0029] Figure 8 Schematic diagram of the limiting assembly of the present invention;

[0030] Figure 9 For the present invention Figure 8 Partial enlarged view at A in;

[0031] Figure 10 Schematic diagram of the rotating assembly of the present invention;

[0032] Figure 11 Schematic diagram of the engagement of the rack and the gear ring of the present invention.

[0033] Explanation of the reference numerals in the drawings:

[0034] 1. Placing rack; 11. Test tube body; 12. Centering frame cylinder;

[0035] 2. Bottom support assembly; 21. Bottom support cylinder; 22. Fixed frame; 23. Bracket; 24. Magnetic adsorption sliding column; 25. Magnetic adsorption cylinder; 26. Centering hole; 27. Limit sleeve;

[0036] 3. Displacement component; 31. Contact groove; 32. First contact plate; 33. Second contact plate; 34. First spring; 35. Centering column; 36. Mounting seat; 37. Swing arm; 38. Connecting shaft column; 39. Moving plate; 301. Telescopic motor; 302. Slide groove;

[0037] 4. Short-range component; 41. Column; 42. Guide groove; 43. Guide frame; 44. Short-range column; 45. Guide block; 46. Short-range groove; 47. Contact ring;

[0038] 5. Thrust component; 51. Thrust block; 52. Second spring; 53. Thrust column; 54. Fixed plate; 55. Arc frame;

[0039] 6. Limiting component; 61. Third spring; 62. Moving groove; 63. Contact ring; 64. Positioning column; 65. Lead-in groove;

[0040] 7. Rotating component; 71. Connecting plate; 72. Rack; 73. Tooth ring; 74. Shifting groove; 75. Embedding groove. Detailed implementation mode

[0041] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0042] The present invention provides a test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material as shown in Figures 1 - 11 Figure, which includes a placement rack 1, a number of test tube bodies 11 and a number of centering rack cylinders 12, and the centering rack cylinders 12 are used to place the test tube bodies 11 in the placement rack 1;

[0043] The bottom support assembly 2 is used to protect the bottom of the test tube body 11 in the placement rack 1, ensuring the stable preparation of the materials in the test tube body 11. The bottom support assembly 2 includes a fixed frame 22 fixedly connected in the placement rack 1 and a bottom support cylinder 21 sleeved outside the test tube body 11. A bracket 23 is fixedly connected to one side of the fixed frame 22 close to the bottom support cylinder 21. A magnetic attraction cylinder 25 is fixedly connected to the outside of the bottom support cylinder 21. A magnetic attraction sliding column 24 is magnetically attracted in the magnetic attraction cylinder 25. A centering hole 26 for the up and down movement of the magnetic attraction sliding column 24 is opened in the middle of the inside of the bracket 23. A moving component 3 for driving the magnetic attraction sliding column 24 and the magnetic attraction cylinder 25 to move is arranged between the fixed frame 22 and the bracket 23, and the moving component 3 is used to move the bottom support cylinder 21 up, down, left and right outside the bracket 23. A limiting sleeve 27 is rotatably connected in the centering frame cylinder 12. A limiting component 6 matched with the limiting sleeve 27 is arranged in the centering frame cylinder 12, and the limiting component 6 is used to accurately place test tube bodies 11 of different sizes in the limiting sleeve 27 and the bottom support cylinder 21. A rotating component 7 for connection is arranged between the moving component 3 and the limiting sleeve 27, and the rotating component 7 is used to drive the limiting sleeve 27 to rotate in the centering frame cylinder 12 and shake and mix the materials in the test tube body 11;

[0044] The limiting component 6 includes a moving groove 62 opened in the limiting sleeve 27. A plurality of contact rings 63 are slidably connected in the moving groove 62. One side of each of the plurality of contact rings 63 is attached to the outside of the test tube body 11. Two symmetric guiding grooves 65 are opened on one side of the contact ring 63. Two symmetric positioning columns 64 are fixedly connected in the moving groove 62, and the two positioning columns 64 are inserted into the two guiding grooves 65. Two third springs 61 are commonly connected between the two guiding grooves 65 and the two positioning columns 64; The plurality of contact rings 63 are arranged in a circular array in the limiting sleeve 27, and the top of the contact ring 63 is in an arc structure.

[0045] Reference Figures 1 - 11As shown, the removal component 3 includes a mounting seat 36 fixedly connected to one end of the magnetic attraction sliding column 24 away from the magnetic attraction cylinder 25, a telescopic motor 301 fixedly connected to the fixing frame 22 near the placing rack 1, and a moving plate 39 fixedly connected to the telescopic end of the telescopic motor 301. The telescopic motor 301 is used to drive the moving plate 39 to move left and right along one side of the fixing frame 22. A connecting shaft column 38 is installed on one side of the moving plate 39. A swing arm 37 is movably connected between the connecting shaft column 38 and the mounting seat 36. The removal component 3 further includes a first contact plate 32 fixedly connected to the magnetic attraction sliding column 24 near the magnetic attraction cylinder 25, a second contact plate 33 slidably connected in the bracket 23, and a contact groove 31 opened in the middle of the bracket 23 and communicating with the inside of the centering hole 26 for the magnetic attraction cylinder 25 to abut against. The magnetic attraction cylinder 25 is slidably connected in the contact groove 31 and the bracket 23. A chute 302 communicating with the inside of the centering hole 26 for the first contact plate 32 to move is opened in the bracket 23. One end of the second contact plate 33 away from the first contact plate 32 is fixedly connected with a centering column 35, and one end of the centering column 35 penetrates through the bracket 23. A first spring 34 is fixedly connected between the second contact plate 33 and the bracket 23, and the first spring 34 is sleeved outside the centering column 35. A short-range component 4 for cooperating with the second contact plate 33 is arranged between the bracket 23 and the moving plate 39, so as to ensure stable fitting between the magnetic attraction cylinder 25 and the second contact plate 33, and ensure that the magnetic attraction cylinder 25 stably moves to the required position in the bracket 23. The rotation component 7 includes an adapter plate 71 fixedly connected to one end of the centering column 35 and a toothed ring 73 sleeved on the top of the limit sleeve 27. A moving groove 74 for the adapter plate 71 to move is opened on one side of the placing rack 1. One end of the adapter plate 71 penetrates through the moving groove 74 and is fixed with a rack 72, and the rack 72 is slidably connected with the placing rack 1. An engaging groove 75 for the toothed ring 73 and the rack 72 to engage is opened on one side of the placing rack 1 near the moving groove 74.

[0046] Reference Figures 1 - 7As shown in the figure, the short-range component 4 includes a column 41 fixedly connected to one side of the moving plate 39 and a contact ring 47 slidably connected in the bracket 23 and cooperating with the magnetic attraction cylinder 25. A guide groove 42 communicating with its interior is formed on one side of the bracket 23. A guide block 45 is slidably connected in the guide groove 42, and the guide block 45 is used to drive the contact ring 47 to move. A guide frame 43 for connection is provided between the column 41 and the bracket 23. One end of the guide block 45 extends to the outside of the guide groove 42 and is fixed with a short-range column 44. A short-range groove 46 for the short-range column 44 to move is formed at the top of the guide frame 43. An anti-pushing component 5 cooperating with the guide block 45 is arranged in the guide groove 42, and the anti-pushing component 5 is used to push the magnetic attraction cylinder 25 to move back to its original position; the anti-pushing component 5 includes an anti-pushing block 51 slidably connected in the guide groove 42 and in contact with the guide block 45, and an arc-shaped frame 55 fixedly connected to one end of the anti-pushing block 51. The arc-shaped frame 55 is located inside the bracket 23 and is in contact connection with the magnetic attraction cylinder 25. A fixing plate 54 is fixedly connected to one side of the bracket 23. One end of the anti-pushing block 51 extends to the outside of the guide groove 42 and is fixed with an anti-pushing column 53, and one end of the anti-pushing column 53 penetrates through the fixing plate 54. A second spring 52 is commonly connected between the anti-pushing block 51 and the fixing plate 54, and the second spring 52 is sleeved outside the anti-pushing column 53.

[0047] Through the above technical solutions:

[0048] During use;

[0049] First step, when the test tube body 11 is inserted inside the limit sleeve 27 and the centering frame tube 12 and is located inside the placement rack 1, then the bottom of the test tube body 11 is located inside the limit sleeve 27 and abuts against the top of the contact ring 63. At this time, the bottom of the test tube body 11 and the top of the contact ring 63 move downward in contact and push the contact ring 63 to move into the moving groove 62, so that the third spring 61 is compressed between the contact ring 63 and the positioning column 64, and the elastic force of the third spring 61 itself gives a thrust to one side of the contact ring 63, so that the contact ring 63 fits with the test tube body 11, ensuring that the test tube body 11 moves stably downward inside the limit sleeve 27. Thus, the bottom of the test tube body 11 passes through the limit sleeve 27 and moves into the bottom support tube 21, so that the test tube body 11 is supported at two points inside the placement rack 1. Then, the bottom support tube 21 protects the bottom of the placement rack 1, avoiding the situation that the bottom of the test tube body 11 is directly exposed on the hard surface of the placement rack 1 and is likely to cause the test tube to break or crack due to collision, friction or uneven pressure, which is beneficial to the safe placement of the test tube body 11 by the placement rack 1, making the test tube body 11 keep an upright state inside the placement rack 1, facilitating the experimenter to observe the reaction process at any time and record data, and contributing to subsequent analysis and optimization of the preparation.

[0050] In the second step, when the material inside the test tube body 11 needs to be heated and prepared, and the bottom support tube 21 needs to be removed, the telescopic motor 301 is used to push the movable plate 39 to move along one side of the fixed frame 22, and then the movable plate 39 moves to drive the connecting shaft column 38 to move synchronously. At this time, the connecting shaft column 38 moves to drive one end of the swing arm 37 to move, and then the other end of the swing arm 37 pulls the mounting seat 36 and drives the mounting seat 36 to move downward along one side of the fixed frame 22. At this time, the magnetic sliding column 24 moves downward along the centering hole 26, so that the bottom support tube 21 moves downward along the outside of the test tube body 11, and the downward movement of the magnetic sliding column 24 drives the first contact plate 32 to move downward synchronously, and the first contact plate 32 and the second contact plate 33 contact and push each other. The second contact plate 33 is moved along the direction of the force in the bracket 23, so that the second contact plate 33 moves and drives the centering column 35 to move along the bracket 23, and the first spring 34 is squeezed between the second contact plate 33 and the bracket 23, so that the mounting seat 36 and the magnetic slide 24 are continuously moving downward, driving the first contact plate 32 to move downward along the slide groove 302, and the magnetic suction cylinder 25 moves to the inside of the abutment groove 31 and forms a conflict therewith, and then the magnetic attraction between the magnetic suction slide 24 and the magnetic suction cylinder 25 is disconnected, so that the magnetic suction cylinder 25 forms a separation state between the magnetic suction slide 24 in the abutment groove 31, and the top of the second contact plate 33 slides over the bottom of the second contact plate 33, so that the bottom bracket 21 and the test tube body 11 are separated up and down.

[0051] Step 3: When the magnetic attraction cylinder 25 is separated from the magnetic attraction sliding column 24 and the moving plate 39 continues to move, first, the moving plate 39 drives the upright column 41 to move synchronously during the movement, so that the guiding frame 43 moves along one side of the bracket 23, and the short-range groove 46 and the short-range column 44 keep moving. Since the second contact plate 33 loses connection with the first contact plate 32, immediately, the elastic force of the first spring 34 gives a thrust to one side of the second contact plate 33 to push the magnetic attraction cylinder 25 to slide out of the inside of the abutment groove 31 and move into the inside of the bracket 23. The magnetic attraction cylinder 25 moves to form an abutment with one side of the abutment ring 47 inside the bracket 23, so that the magnetic attraction cylinder 25 moves to push the abutment ring 47 and drives the guiding block 45 to move along the guiding groove 42. Then, the short-range column 44 moves along the short-range groove 46, and the abutment ring 47 moves inside the bracket 23 and passes through the arc-shaped frame 55, so that the guiding block 45 abuts against the anti-pushing block 51. The elastic force of the second spring 52 gives a thrust to one side of the anti-pushing block 51, so that a reaction force is generated between the anti-pushing block 51 and the guiding block 45 to briefly resist the moving guiding block 45. Moreover, the continuous movement of the guiding frame 43 causes the short-range groove 46 and the short-range column 44 to abut against each other to push the guiding block 45 to continue moving. Thus, the moving guiding block 45 continues to push the anti-pushing block 51 to move, so that the anti-pushing block 51 moves along the guiding groove 42 and drives the arc-shaped frame 55 to move synchronously. As the anti-pushing block 51 moves to push the anti-pushing column 53 to move inside the fixing plate 54, then the second spring 52 located between the fixing plate 54 and the anti-pushing block 51 is compressed. Subsequently, the magnetic attraction cylinder 25 slides and moves inside the bracket 23, so that the downward-moving bottom support cylinder 21 moves left or right along the bracket 23 during this process. Thus, the up, down, left, and right movement of the bottom support cylinder 21 can prevent the heating device from making hard contact with the bottom of the test tube body 11, resulting in the situation that the bottom of the test tube body 11 collides and is damaged, ensuring the stable preparation of the materials inside the test tube body 11.

[0052] Step 4: When the centering column 35 is moving, immediately, the moving centering column 35 drives the connecting plate 71 to move. At this time, the connecting plate 71 moves along the moving groove 74 and drives the rack 72 to move. And during the movement, the rack 72 moves into the inside of the embedding groove 75, so that the rack 72 meshes with the toothed ring 73 inside the embedding groove 75 and drives the toothed ring 73 to rotate. Moreover, the rotation of the toothed ring 73 drives the limiting sleeve 27 to rotate inside the centering frame cylinder 12. Thus, the horizontal movement of the centering column 35 drives the circumferential movement of the limiting sleeve 27, which is convenient for cooperation with the user and convenient for the mixing of materials. It can make the reactants mix more evenly inside the test tube body 11, promote the mass diffusion between the reactants, shorten the preparation reaction time of the materials inside the test tube body 11, and improve the overall efficiency of the experiment.

[0053] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material, comprising a placement rack (1), a plurality of test tube bodies (11) and a plurality of centering rack cylinders (12), and the centering rack cylinders (12) are used to place the test tube bodies (11) in the placement rack (1). It is characterized in that: A bottom support assembly (2) is used to protect the bottom of the test tube body (11) in the placement rack (1) to ensure the stable preparation of the materials in the test tube body (11). The bottom support assembly (2) includes a fixed frame (22) fixedly connected in the placement rack (1) and a bottom support cylinder (21) sleeved outside the test tube body (11). A bracket (23) is fixedly connected to one side of the fixed frame (22) close to the bottom support cylinder (21). A magnetic attraction cylinder (25) is fixedly connected to the outside of the bottom support cylinder (21). A magnetic attraction sliding column (24) is magnetically attracted in the magnetic attraction cylinder (25). A centering hole (26) for the up and down movement of the magnetic attraction sliding column (24) is opened in the middle of the inside of the bracket (23). A moving-away assembly (3) for driving the magnetic attraction sliding column (24) and the magnetic attraction cylinder (25) to move is provided between the fixed frame (22) and the bracket (23), and the moving-away assembly (3) is used to move the bottom support cylinder (21) up, down, left and right outside the bracket (23). A limiting sleeve (27) is rotatably connected in the centering rack cylinder (12). A limiting assembly (6) matching with the limiting sleeve (27) is arranged in the centering rack cylinder (12), and the limiting assembly (6) is used to accurately place test tube bodies (11) of different sizes in the limiting sleeve (27) and the bottom support cylinder (21). A rotating assembly (7) for connection is arranged between the moving-away assembly (3) and the limiting sleeve (27), and the rotating assembly (7) is used to drive the limiting sleeve (27) to rotate in the centering rack cylinder (12) and shake and mix the materials in the test tube body (11); The moving-away assembly (3) includes a mounting seat (36) fixedly connected to one end of the magnetic attraction sliding column (24) away from the magnetic attraction cylinder (25), a telescopic motor (301) fixedly connected to one side of the fixed frame (22) close to the placement rack (1), and a moving plate (39) fixedly connected to the telescopic end of the telescopic motor (301). The telescopic motor (301) is used to drive the moving plate (39) to move left and right along one side of the fixed frame (22). An engaging shaft column (38) is installed on one side of the moving plate (39). A swing arm (37) is movably connected between the engaging shaft column (38) and the mounting seat (36).

2. A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material according to claim 1, characterized in that: The moving component (3) further includes a first contact plate (32) fixedly connected to the side of the magnetic attraction sliding column (24) close to the magnetic attraction cylinder (25), a second contact plate (33) slidably connected in the bracket (23), and a contact groove (31) opened in the middle of the interior of the bracket (23) and communicated with the interior of the centering hole (26) for the magnetic attraction cylinder (25) to abut against. The magnetic attraction cylinder (25) is slidably connected in the contact groove (31) and the bracket (23). A sliding groove (302) communicated with the interior of the centering hole (26) for the first contact plate (32) to move is opened in the bracket (23). One end of the second contact plate (33) far from the first contact plate (32) is fixedly connected with a centering column (35), and one end of the centering column (35) penetrates through the bracket (23). A first spring (34) is fixedly connected between the second contact plate (33) and the bracket (23), and the first spring (34) is sleeved on the outside of the centering column (35). A short-range component (4) for cooperating with the second contact plate (33) is arranged between the bracket (23) and the moving plate (39), so as to stably fit between the magnetic attraction cylinder (25) and the second contact plate (33), and ensure that the magnetic attraction cylinder (25) stably moves to the required position in the bracket (23).

3. A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material according to claim 2, characterized in that: The short-range component (4) includes a column (41) fixedly connected to one side of the moving plate (39) and a contact ring (47) slidably connected in the bracket (23) and cooperating with the magnetic attraction cylinder (25). A guiding groove (42) communicated with its interior is opened on one side of the bracket (23). A guiding block (45) is slidably connected in the guiding groove (42), and the guiding block (45) is used to drive the contact ring (47) to move. A guiding frame (43) for connection is arranged between the column (41) and the bracket (23). One end of the guiding block (45) extends to the outside of the guiding groove (42) and is fixed with a short-range column (44). A short-range groove (46) for the short-range column (44) to move is opened at the top of the guiding frame (43). A reverse pushing component (5) cooperating with the guiding block (45) is arranged in the guiding groove (42), and the reverse pushing component (5) is used to push the magnetic attraction cylinder (25) to move back to its original position.

4. A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material according to claim 3, characterized in that: The reverse pushing component (5) includes a reverse pushing block (51) slidably connected in the guiding groove (42) and abutting against the guiding block (45), and an arc-shaped frame (55) fixedly connected to one end of the reverse pushing block (51). The arc-shaped frame (55) is located in the bracket (23) and is in connection contact with the magnetic attraction cylinder (25). A fixing plate (54) is fixedly connected to one side of the bracket (23). One end of the reverse pushing block (51) extends to the outside of the guiding groove (42) and is fixed with a reverse pushing column (53), and one end of the reverse pushing column (53) penetrates through the fixing plate (54). A second spring (52) is jointly connected between the reverse pushing block (51) and the fixing plate (54), and the second spring (52) is sleeved on the outside of the reverse pushing column (53).

5. A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material according to claim 1, characterized in that: The limiting component (6) includes a moving groove (62) formed in the limiting sleeve (27). A plurality of contact rings (63) are slidably connected in the moving groove (62). One side of each of the plurality of contact rings (63) is in contact with the outer surface of the test tube body (11). Two symmetric guiding grooves (65) are formed on one side of the contact ring (63). Two symmetric positioning columns (64) are fixedly connected in the moving groove (62), and the two positioning columns (64) are inserted into the two guiding grooves (65). Two third springs (61) are connected between the two guiding grooves (65) and the two positioning columns (64).

6. A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material according to claim 5, characterized in that: A plurality of the contact rings (63) are arranged in a circular array in the limiting sleeve (27), and the top of the contact ring (63) is in an arc structure.

7. A test tube rack for preparing an acrylic heat-conducting electromagnetic wave absorbing material according to claim 2, characterized in that: The rotating component (7) includes an adapter plate (71) fixedly connected to one end of the centering column (35) and a toothed ring (73) sleeved on the top of the limiting sleeve (27). A moving groove (74) for the adapter plate (71) to move is formed on one side of the placement rack (1). One end of the adapter plate (71) penetrates through the moving groove (74) and is fixed with a rack (72). The rack (72) is slidably connected to the placement rack (1). An engaging groove (75) for the toothed ring (73) and the rack (72) to engage is formed on one side of the placement rack (1) close to the moving groove (74).

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