Experimental device for directional solidification of nanofluid

Abstract

The utility model is applicable to the technical field of nanofluids, and discloses an experimental device for directional solidification of nanofluids, a thermal insulation plate is hinged to the side edge of the top of a thermal insulation frame through a rotating shaft, a feeding hole is formed in the side edge in the thermal insulation plate, and rotating rods are rotationally mounted on two sides in the thermal insulation frame through bearings; a material guide plate is fixedly installed between the side edges of the two sets of rotating rods, limiting baffles are vertically and fixedly installed on the two sides of the top of the material guide plate, hollow frames are fixedly installed at the two ends of the top of the outer side of the heat insulation frame, rotating mechanisms are arranged in the hollow frames, and the rotating mechanisms are in transmission connection with the rotating rods. According to the technical scheme provided by the utility model, the flow velocity of the nanofluid can be conveniently adjusted, so that the adverse effect caused by the influence on the dispersion stability of the subsequent solidified fluid due to too high and too low flow velocity of the nanofluid is avoided; the flow guide plate is prevented from rotating at will, and it is guaranteed that when the nanofluid flows, the flow guide plate cannot be lifted, and control over the flow speed of the nanofluid is not affected.

Description

Technical Field

[0001] This invention relates to the field of nanofluid technology, and in particular to an experimental apparatus for the directional solidification of nanofluids. Background Technology

[0002] Currently, nanofluid directional solidification technology involves adding nanoparticles to a fluid to form a nanofluid, and then using a directional solidification process to allow the nanoparticles and matrix material in the fluid to solidify and crystallize together in a specific direction. This technology combines the advantages of nanomaterials and directional solidification, and can produce composite materials with excellent properties.

[0003] However, currently, when nanoparticles are added to fluids to form nanofluids, directional solidification experiments require placing the nanofluid on a guide plate surface for directional flow guidance. However, the guide plate, with its relatively simple structure and function, cannot quickly adjust and control the flow rate of the nanofluid. Consequently, excessively fast or slow flow rates can negatively impact the dispersion stability after solidification. Therefore, we propose an experimental apparatus for the directional solidification of nanofluids. Utility Model Content

[0004] The main objective of this invention is to provide an experimental apparatus for the directional solidification of nanofluids, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An experimental apparatus for directional solidification of nanofluids includes a heat-insulating frame. A heat-insulating plate is hinged to the top side of the heat-insulating frame via a rotating shaft. A feed inlet is provided on the inner side of the heat-insulating plate. Rotating rods are rotatably mounted on both sides of the inner side of the heat-insulating frame via bearings. A guide plate is fixedly installed between the sides of the two sets of rotating rods. Limiting baffles are vertically fixedly installed on both sides of the top of the guide plate. Hollow frames are fixedly installed at both ends of the top of the outer side of the heat-insulating frame. A rotating mechanism is provided inside the hollow frame, and the rotating mechanism is kinetically connected to the rotating rods. A limiting mechanism is provided on the top inner side of the hollow frame, and the limiting mechanism is in movable contact with the rotating mechanism.

[0007] By adopting the above technical solution, the resistance and limiting mechanisms are used to limit the movement, and the transmission connection between the rotating mechanism and the guide plate facilitates the adjustment of the flow speed of the nanofluid. This avoids the nanofluid flow speed being too fast or too slow, which would affect the dispersion stability of the fluid after solidification and cause adverse effects. At the same time, it prevents the guide plate from rotating arbitrarily, ensuring that the guide plate will not rise during the flow of the nanofluid and thus affect the control of the flow speed of the nanofluid.

[0008] As an optional solution to the technical solution of this application, the rotating mechanism includes a rotating ratchet. The top end of each rotating rod is rotatably mounted inside the hollow frame via a bearing. The top end of each rotating rod is fixedly sleeved with a rotating ratchet, and the rotating ratchet is rotatably mounted inside the hollow frame.

[0009] By adopting the above technical solution, and through the transmission connection between the rotating ratchet and the guide plate, the operator can drive the guide plate to rotate synchronously when pushing the rotating rod and the transmission rod, thereby adjusting the directional solidification rate of the nanofluid material.

[0010] As an optional solution to the technical solution of this application, the limiting mechanism includes a limiting pawl, a fixed rod is rotatably mounted on the top inner side of each hollow frame via a bearing, a connecting block is fixedly sleeved at the middle end of each fixed rod, a limiting pawl is fixedly mounted on the side of each connecting block near the limiting pawl, and the top edge of the limiting pawl is movably fitted to the outside of the rotating ratchet, a fixed sleeve is fixedly mounted on the top edge of each fixed rod, and the fixed sleeve is rotatably mounted on the outside of the hollow frame, a push plate is vertically fixedly mounted on the top outer side of each fixed sleeve, and a transmission rod is rotatably mounted through the middle outer side of each hollow frame via a bearing, and the top edge of the transmission rod and the top edge of the rotating rod are fixedly connected.

[0011] By adopting the above technical solution, the limiting pawl is installed in the hollow frame by fixing the rod, so that the limiting pawl can abut against the rotating ratchet, thus preventing the guide plate from rotating arbitrarily and affecting the directional solidification quality of the nanofluid material.

[0012] As an optional solution to the technical solution of this application, a connecting post is fixedly installed at the top center of the inner side of the hollow frame, a fixing block is fixedly installed at the top of the outer side of each limiting pawl, and a reset spring is fixedly installed between the outer side of the connecting post and the fixing block, and the reset spring is movably located inside the hollow frame.

[0013] By adopting the above technical solution, the position of the limiting pawl, which rotates with the rotation of the ratchet, can be restored by the pull action of the return spring on the outside of the limiting pawl, thus ensuring the unidirectional resistance force of the limiting pawl on the rotation of the ratchet.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. An experimental apparatus for the directional solidification of nanofluids according to the technical solution of this application, wherein rotatable guide plates are provided on both sides of the heat-insulating frame via rotating rods, and a rotating ratchet connected to the rotating rods is provided inside the hollow frame, so that the operator only needs to turn the rotating rods to drive the rotating rods and the guide plates to rotate synchronously inside the heat-insulating frame. While adjusting the inclination of the guide plates inside the heat-insulating frame, the ratchet pawl simultaneously abuts the rotating ratchet to limit the movement of the guide plates, thereby facilitating the adjustment of the flow rate of the nanofluid. This avoids the nanofluid flow rate being too fast or too slow, which would affect the dispersion stability of the fluid after solidification and cause adverse effects. At the same time, it prevents the guide plates from rotating arbitrarily, ensuring that the guide plates will not rise during the flow of nanofluid, thus affecting the control of the flow rate of nanofluid.

[0016] 2. An experimental device for directional solidification of nanofluids according to the technical solution of this application, wherein a connecting column and a fixing block are respectively provided inside the hollow frame and outside the limiting pawl, and a return spring is provided between the fixing block and the outside of the connecting column, so that the return spring can elastically pull the limiting pawl, so that after the rotating ratchet is rotated clockwise to adjust the guiding position of the guide plate, the limiting pawl can automatically reset its position and thus achieve the abutment and limiting treatment of the rotating ratchet, further ensuring the guiding stability of the lifting plate for nanofluid materials. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an experimental device for directional solidification of nanofluids according to the present invention.

[0018] Figure 2 This is a front view cross-sectional view of the hollow frame structure of an experimental device for directional solidification of nanofluids according to the present invention.

[0019] Figure 3 This is a front view of the outer side of the hollow frame of an experimental device for directional solidification of nanofluids according to the present invention.

[0020] Reference numerals in the attached drawings: 1. Insulation frame; 11. Insulation plate; 12. Feed inlet; 13. Guide plate; 14. Limiting baffle; 2. Rotating rod; 21. Hollow frame; 22. Transmission rod; 23. Rotating ratchet; 24. Fixing rod; 25. Connecting block; 26. Limiting pawl; 27. Fixing sleeve; 28. Push plate; 3. Connecting column; 31. Fixing block; 32. Return spring. Detailed Implementation

[0021] like Figure 1-3As shown, this utility model provides a technical solution: an experimental device for directional solidification of nanofluids. The top side of the insulation frame 1 is hinged to an insulation plate 11 via a rotating shaft. The inner side of the insulation plate 11 is provided with a feed port 12, and the bottom of the insulation frame 1 is provided with a discharge port below the side of the guide plate 13 for discharging the directionally solidified nanofluid. Rotating rods 2 are rotatably installed on both sides of the inner side of the insulation frame 1 via bearings. A guide plate 13 is fixedly installed between the sides of the two sets of rotating rods 2. Limiting baffles 14 are vertically fixedly installed on both sides of the top of the guide plate 13.

[0022] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown, hollow frames 21 are fixedly installed at both ends of the top of the outer side of the insulation frame 1. A rotating mechanism is provided inside the hollow frame 21, and the rotating mechanism is connected to the rotating rod 2 in a transmission manner. The rotating mechanism includes a rotating ratchet 23. The top side of each rotating rod 2 is rotatably installed inside the hollow frame 21 through a bearing. The top side of each rotating rod 2 is fixedly fitted with a rotating ratchet 23, and the rotating ratchet 23 is rotatably installed inside the hollow frame 21.

[0023] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown, a limiting mechanism is provided on the top inner side of the hollow frame 21, and the limiting mechanism and the rotating mechanism are in contact. The limiting mechanism includes a limiting pawl 26. A fixed rod 24 is rotatably installed on the top inner side of each hollow frame 21 through a bearing. A connecting block 25 is fixedly sleeved at the middle end of each fixed rod 24. A limiting pawl 26 is fixedly installed on the side of each connecting block 25 near the limiting pawl 26, and the top edge of the limiting pawl 26 is movably attached to the outside of the rotating ratchet 23.

[0024] In this technical solution (through Figure 1 , Figure 2 and Figure 3 As shown), a fixed sleeve 27 is fixedly installed on the top side of each fixed rod 24, and the fixed sleeve 27 is rotatably installed on the outside of the hollow frame 21. A push plate 28 is vertically fixedly installed on the top side of each fixed sleeve 27. A transmission rod 22 is rotatably installed through a bearing at the middle of the outside of each hollow frame 21, and the top side of the transmission rod 22 is fixedly connected to the top side of the rotating rod 2.

[0025] In some technical solutions (through Figure 1 , Figure 2 and Figure 3As shown, a connecting post 3 is fixedly installed at the top center of the inner side of the hollow frame 21, and a fixing block 31 is fixedly installed on the top of the outer side of each limiting pawl 26. A return spring 32 is fixedly installed between the outer side of the connecting post 3 and the fixing block 31, and the return spring 32 is movably located inside the hollow frame 21.

[0026] During operation, when the nanofluid needs to be solidified, the solidification temperature inside the insulation frame 1 is adjusted and controlled by an external temperature controller. Simultaneously, the push plate 28 is pushed, causing the limiting pawl 26 to rotate counterclockwise inside the hollow frame 21 under the transmission action of the fixed sleeve 27 and the fixed rod 24. This allows the limiting pawl 26 to move away from the outer toothed surface of the rotating ratchet 23, preventing it from obstructing the rotating ratchet 23. Then, the transmission rod 22 is turned, causing it to rotate synchronously with the rotating ratchet 23 and the guide plate 13. This movement of the guide plate 13 within the insulation frame 1... After adjusting the tilt, the flow rate of the nanofluid material is ensured to be neither too fast nor too slow when it is poured onto the surface of the guide plate 13, so as not to affect the solidification quality. During the solidification process of the nanofluid, when it is necessary to adjust the position of the guide plate 13, or when it is necessary to reduce the tilt of the guide plate 13, the rotating rod 2 can be turned directly, so that it drives the rotating ratchet 23 to rotate clockwise in sync. After the outer tooth block of the rotating ratchet 23 abuts against the bottom end of the limiting pawl 26, the limiting pawl 26 can abut against the rotating ratchet 23, so that the guide plate 13 will not move down arbitrarily during the flow of the nanofluid, thus affecting the guiding stability of the nanofluid.

Claims

1. An experimental device for directional solidification of nanofluids comprising a thermal insulation frame (1), characterized in that: The temperature insulation frame (1) top side is hinged with a temperature insulation plate (11) through a rotating shaft, and the inside side of the temperature insulation plate (11) is provided with a feeding port (12); Both sides of the inside of the temperature insulation frame (1) are rotatably installed with rotating rods (2) through bearings, and the two groups of rotating rods (2) are fixedly installed with guide plates (13) between the side edges, and the top of the guide plate (13) is fixedly installed with a limiting baffle (14) on both sides in the vertical direction. The hollow frame (21) is fixedly installed on both ends of the outside top of the temperature insulation frame (1), the hollow frame (21) is provided with a rotating mechanism inside, and the rotating mechanism and the rotating rod (2) are drivingly connected, and the inside top of the hollow frame (21) is provided with a limiting mechanism, and the limiting mechanism and the rotating mechanism are movably connected.

2. The experimental set-up for directional solidification of nanofluids as claimed in claim 1 wherein: The rotating mechanism comprises rotating ratchets (23), and each rotating rod (2) is rotatably installed at the inside of the hollow frame (21) through a bearing at the top of the side edge, and each rotating rod (2) is fixedly sleeved with a rotating ratchet (23) at the top of the side edge, and the rotating ratchet (23) is rotatably installed at the inside of the hollow frame (21).

3. The experimental set-up for directional solidification of nanofluids as claimed in claim 1 wherein: The limiting mechanism comprises limiting pawls (26), and each hollow frame (21) is rotatably installed with a fixed rod (24) at the top of the inside through a bearing, each fixed rod (24) is fixedly sleeved with a connecting block (25) at the middle end, each connecting block (25) is fixedly installed with a limiting pawl (26) on the side close to the limiting pawl (26), and the top end of the side edge of the limiting pawl (26) is movably attached to the outside of the rotating ratchet (23).

4. The experimental set-up for directional solidification of nanofluids as claimed in claim 3 wherein: Each fixed rod (24) is fixedly installed with a fixed sleeve (27) at the top of the side edge, and the fixed sleeve (27) is rotatably installed on the outside of the hollow frame (21), each fixed sleeve (27) is fixedly installed with a hand pushing plate (28) on the top of the outside in the vertical direction, and each hollow frame (21) is rotatably installed with a transmission rod (22) at the middle end of the outside through a bearing, and the top end of the side edge of the transmission rod (22) is fixedly connected with the top end of the outside of the rotating rod (2).

5. The experimental set-up for directional solidification of nanofluids as claimed in claim 3 wherein: The connecting column (3) and the fixed block (31) are fixedly installed with a reset spring (32) between the outside, and the reset spring (32) is movably located in the inside of the hollow frame (21).

6. An experimental set-up for directional solidification of nanofluids as claimed in claim 5, wherein: The connecting column (3) and the fixed block (31) are fixedly installed with a reset spring (32) between the outside, and the reset spring (32) is movably located in the inside of the hollow frame (21).

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