Device for measuring sizes of nanoparticles

Abstract

The utility model relates to the field of particle size detection of nano-particles, in particular to a device for measuring the size of nano-particles, which comprises a fixed seat, a movable seat arranged at the top of the fixed seat, and a clamping groove arranged between the movable seat and the fixed seat; when the lens module is installed, the lens module is placed between the two clamping grooves, the movable base is pressed to descend, when the movable base descends, the vertical rod and the wedge-shaped block are synchronously driven to descend, the inclined face of the wedge-shaped block is used for guiding the limiting rod to be inserted into the limiting through hole in the surface of the wedge-shaped block, and installation can be completed; and a detector rotates a gear through a handle, and two cross rods are driven to retreat by utilizing meshing connection of the gear and a rack, so that a limiting rod is separated from a wedge-shaped block, and the advantages that the lens module can be conveniently disassembled and assembled, a plurality of bolts do not need to be disassembled during disassembly and assembly, and the nano-particle size detection efficiency is conveniently improved are achieved.

Description

Technical Field

[0001] The utility model relates to the field of nanoparticle size detection, and particularly relates to a device for measuring the size of nanoparticles. Background Art

[0002] The particle size and distribution of nanoparticles are important parameters characterizing their performance. Dynamic light scattering technology is an effective method for measuring the particle size of nanoparticles. During measurement, it is required that the concentration of the tested sample is relatively dilute to avoid multiple scattering. Therefore, this method cannot be directly used to measure samples with relatively high concentrations and opaque systems such as suspensions, and must be diluted before measurement. However, the dynamic parameters and some static parameters of the sample will change with the concentration.

[0003] After retrieval, a backward scattering light receiving device for nanoparticle size measurement with the authorized announcement number of CN218297938U. Although this device can drive the mounting frame to move and adjust the lens position by a stepping motor, so as to drive the lens to move away from and close to the cuvette to adjust the scattering optical path, when disassembling and assembling the lens module of this device, multiple bolts need to be disassembled, which is not only cumbersome to operate, but also affects the detection efficiency of nanoparticle size.

[0004] Therefore, a device for measuring the size of nanoparticles is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for measuring the size of nanoparticles to solve the above problems, and improve the problem that when disassembling and assembling the lens module of the device, multiple bolts need to be disassembled, which is not only cumbersome to operate, but also affects the detection efficiency of nanoparticle size.

[0006] The utility model realizes the above purpose through the following technical solutions. A device for measuring the size of nanoparticles includes: a fixed seat, a movable seat is arranged on the top of the fixed seat, clamping grooves are respectively opened between the movable seat and the fixed seat, and lens modules are installed inside both of the two clamping grooves; a disassembly and assembly mechanism, the disassembly and assembly mechanism is installed through the inside of the fixed seat and can lock the fixed seat and the movable seat; wherein, the disassembly and assembly mechanism includes two strip-shaped grooves opened on both sides of the top of the fixed seat, vertical rods are respectively fixedly installed on both sides of the bottom of the movable seat, the bottom ends of the vertical rods penetrate through the strip-shaped grooves and extend to the inner cavity of the strip-shaped grooves, a wedge block is fixedly installed at one end of the vertical rod located in the inner cavity of the strip-shaped groove, an installation cavity is opened inside the fixed seat, and a driving component is installed inside the installation cavity, and the driving component is used to lock the wedge block.

[0007] Preferably, the driving assembly includes two support plates fixedly installed at the top and bottom of the inner cavity of the installation cavity. A cross bar is slidably installed inside each of the two support plates. A limiting plate is fixedly installed at one end of each of the two cross bars away from each other. A limiting rod is fixedly installed on one side of the limiting plate. One end of the limiting rod penetrates through the installation cavity and is inserted into the wedge-shaped block. A first return spring is fixedly installed between the limiting plate and the support plate, and the first return spring is sleeved on the surface of the cross bar.

[0008] Preferably, a rack is installed through between the two cross bars. A rotating rod is rotatably installed in the inner cavity of the installation cavity through a bearing. One end of the rotating rod penetrates through the installation cavity and extends to the outside of the fixed seat. A gear is sleeved on the surface of the rotating rod located in the inner cavity of the installation cavity, and the gear is meshed with the rack.

[0009] Preferably, a handle is fixedly installed at one end of the rotating rod located outside the fixed seat. A bearing seat is installed at the penetration of the rotating rod and the fixed seat, and the rotating rod is rotatably connected to the fixed seat through the bearing seat.

[0010] Preferably, a second return spring is fixedly installed at the bottom of the inner cavity of each of the two strip-shaped grooves. The top of the second return spring is fixedly installed with a push plate, and the top of the push plate is in contact with the bottom of the wedge-shaped block.

[0011] Preferably, a limiting groove is provided on the inner wall of each of the two card slots. An annular protrusion is fixedly installed on the outer surface of the lens module, and the annular protrusion is clamped with the limiting groove.

[0012] Preferably, a limiting through hole is provided on the surface of each of the two wedge-shaped blocks, and the limiting rod is inserted into the wedge-shaped block through the limiting through hole.

[0013] The beneficial effects of the present utility model are:

[0014] 1. When installing the lens module, place the lens module between the two card slots and press the movable seat to descend. When the movable seat descends, the vertical rod and the wedge-shaped block are synchronously driven to descend, and the limiting rod is guided by the inclined surface of the wedge-shaped block to insert into the limiting through hole on the surface of the wedge-shaped block to complete the installation. When disassembly is required, the tester rotates the gear through the handle and drives the two cross bars to retract by using the meshing connection between the gear and the rack, so that the limiting rod is separated from the wedge-shaped block, which has the advantages of being able to facilitate the disassembly and assembly of the lens module and not requiring the disassembly of multiple bolts during disassembly and assembly, so as to improve the detection efficiency of the nanoparticle size.

[0015] 2. When the wedge block separates from the limit rod, the restoring force of the second return spring is used to drive the push plate to rise. During the rising process of the push plate, the wedge block and the vertical rod are synchronously driven to rise, which can prevent the limit rod from inserting into the interior of the wedge block again after separating from the wedge block, playing a role in facilitating the timely upward pushing of the wedge block during disassembly to avoid the situation where the limit rod inserts into the interior of the wedge block again after separating from the wedge block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is a schematic cross-sectional structural view of the present utility model;

[0018] Figure 3 is Figure 2 an enlarged view of area A in

[0019] Figure 4 is a schematic structural view of the driving assembly of the present utility model;

[0020] Figure 5 is Figure 4 an enlarged view of area B in

[0021] In the figure: 10, fixed seat; 11, movable seat; 12, card slot; 13, lens module; 14, limit slot; 20, disassembly and assembly mechanism; 21, strip slot; 22, vertical rod; 23, wedge block; 24, installation cavity; 25, driving assembly; 251, support plate; 252, cross bar; 253, limit plate; 254, limit rod; 255, first return spring; 256, rack; 257, rotating rod; 258, gear; 259, handle; 26, second return spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] During specific implementation: As Figures 1-5 shown, a device for measuring the size of nanoparticles includes:

[0024] A fixed seat 10, with a movable seat 11 provided on the top of the fixed seat 10. Card slots 12 are provided between the movable seat 11 and the fixed seat 10, and lens modules 13 are installed inside both of the two card slots 12;

[0025] The disassembly and assembly mechanism 20 is installed through the inside of the fixed seat 10 and can lock the fixed seat 10 and the movable seat 11;

[0026] Among them, the disassembly and assembly mechanism 20 includes two strip-shaped grooves 21 opened on both sides of the top of the fixed seat 10. Both sides of the bottom of the movable seat 11 are fixedly installed with vertical rods 22. The bottom ends of the vertical rods 22 penetrate through the strip-shaped grooves 21 and extend into the inner cavity of the strip-shaped grooves 21. One end of the vertical rod 22 located in the inner cavity of the strip-shaped groove 21 is fixedly installed with a wedge-shaped block 23. An installation cavity 24 is opened inside the fixed seat 10, and a driving component 25 is installed inside the installation cavity 24. The driving component 25 is used to lock the wedge-shaped block 23;

[0027] Limit grooves 14 are opened on the inner walls of the two card slots 12. An annular protrusion is fixedly installed on the outer surface of the lens module 13, and the annular protrusion is clamped with the limit groove 14.

[0028] Such as Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0029] In this embodiment, the lens module 13 is placed between the two card slots 12, and the movable seat 11 is pressed to descend. When the movable seat 11 descends, the vertical rod 22 and the wedge-shaped block 23 are synchronously driven to descend, and the wedge-shaped surface of the wedge-shaped block 23 guides the limiting rod 254 to insert into the limiting through hole on the surface of the wedge-shaped block 23 to complete the installation. When disassembly is required, the tester rotates the gear 258 through the handle 259, and drives the two cross bars 252 to retract by using the meshing connection between the gear 258 and the rack 256, so that the limiting rod 254 is separated from the wedge-shaped block 23;

[0030] In this embodiment, limiting through holes are formed on the surfaces of both of the two wedge-shaped blocks 23, and the limiting rod 254 is inserted into the wedge-shaped block 23 through the limiting through holes, which can facilitate the accurate insertion of the limiting rod 254 into the limiting through holes, so as to limit and lock the wedge-shaped block 23.

[0031] As Figure 2 and Figure 3 shown, a handle 259 is fixedly installed at one end of the rotating rod 257 located outside the fixed seat 10. A bearing seat is installed at the penetration of the rotating rod 257 and the fixed seat 10, and the rotating rod 257 is rotatably connected to the fixed seat 10 through the bearing seat.

[0032] In this embodiment, second return springs 26 are fixedly installed at the bottoms of the inner cavities of the two strip-shaped grooves 21. The tops of the second return springs 26 are fixedly installed with a push plate, and the top of the push plate is in contact with the bottom of the wedge-shaped block 23. The resilience of the second return spring 26 is used to drive the push plate to rise, and the push plate synchronously drives the wedge-shaped block 23 and the vertical rod 22 to rise during the rising process, so as to prevent the limiting rod 254 from being inserted into the wedge-shaped block 23 again after being separated from the wedge-shaped block 23.

[0033] When the present utility model installs the lens module 13, the lens module 13 is placed between the two card slots 12, and the movable seat 11 is pressed to descend. When the movable seat 11 descends, it synchronously drives the vertical rod 22 and the wedge-shaped block 23 to descend, and the limiting rod 254 is inserted into the limiting through hole on the surface of the wedge-shaped block 23 through the inclined surface of the wedge-shaped block 23 to complete the installation. When disassembly is required, the tester rotates the gear 258 through the handle 259, and drives the two cross bars 252 to retract by the meshing connection of the gear 258 and the rack 256, so that the limiting rod 254 is separated from the wedge-shaped block 23.

[0034] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for measuring the size of nanoparticles, characterized in that include: A fixed seat (10), wherein a movable seat (11) is arranged on the top of the fixed seat (10), a card slot (12) is provided between the movable seat (11) and the fixed seat (10), and a lens module (13) is installed inside the two card slots (12); A disassembly and assembly mechanism (20), wherein the disassembly and assembly mechanism (20) is installed through the interior of the fixed seat (10) and can lock the fixed seat (10) and the movable seat (11); The disassembly and assembly mechanism (20) comprises two strip grooves (21) opened on both sides of the top of the fixed seat (10); vertical rods (22) are fixedly installed on both sides of the bottom of the movable seat (11); the bottom ends of the vertical rods (22) penetrate the strip grooves (21) and extend to the inner cavity of the strip grooves (21); a wedge block (23) is fixedly installed at one end of the vertical rod (22) located in the inner cavity of the strip groove (21); an installation cavity (24) is opened inside the fixed seat (10); a driving component (25) is installed inside the installation cavity (24); and the driving component (25) is used to lock the wedge block (23).

2. The device for measuring the size of nanoparticles according to claim 1, characterized in that: The driving assembly (25) comprises two support plates (251) fixedly mounted on the top and bottom of the inner cavity of the installation cavity (24); a cross bar (252) is slidably mounted inside the two support plates (251); a limit plate (253) is fixedly mounted on the ends away from the two cross bars (252); a limit rod (254) is fixedly mounted on one side of the limit plate (253); one end of the limit rod (254) passes through the installation cavity (24) and is plugged into the wedge block (23); a first return spring (255) is fixedly mounted between the limit plate (253) and the support plate (251); the first return spring (255) is sleeved on the surface of the cross bar (252).

3. The device for measuring the size of nanoparticles according to claim 2, characterized in that: A rack (256) is installed through the two cross bars (252), and a rotating rod (257) is rotatably installed in the inner cavity of the installation cavity (24) through a bearing, one end of the rotating rod (257) passes through the installation cavity (24) and extends to the outside of the fixed seat (10), and a gear (258) is sleeved on the surface of the rotating rod (257) located in the inner cavity of the installation cavity (24), and the gear (258) is meshingly connected with the rack (256).

4. The device for measuring the size of nanoparticles according to claim 3, characterized in that: A handle (259) is fixedly mounted on one end of the rotating rod (257) located outside the fixed seat (10), a bearing seat is mounted at the penetration point between the rotating rod (257) and the fixed seat (10), and the rotating rod (257) is rotatably connected to the fixed seat (10) via the bearing seat.

5. The device for measuring the size of nanoparticles according to claim 1, characterized in that: A second return spring (26) is fixedly mounted at the bottom of the inner cavity of the two strip-shaped grooves (21), and a push plate is fixedly mounted at the top of the second return spring (26), and the top of the push plate contacts the bottom of the wedge block (23).

6. The device for measuring the size of nanoparticles according to claim 1, characterized in that: The inner walls of the two clamping grooves (12) are provided with limiting grooves (14), and the outer surface of the lens module (13) is fixedly mounted with an annular protrusion, which is clamped with the limiting groove (14).

7. The device for measuring the size of nanoparticles according to claim 2, characterized in that: The surfaces of the two wedge-shaped blocks (23) are both provided with limiting through holes, and the limiting rods (254) are plugged into the wedge-shaped blocks (23) through the limiting through holes.

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