A lamp inspection instrument for detecting visible foreign matter in sodium hyaluronate gel

Abstract

The utility model discloses a lamp inspection appearance for detecting visible foreign matter in sodium hyaluronate gel, including the box of opening towards the front side, the box inside upper portion is equipped with the lamp stand, the light source subassembly is installed on the lamp stand, is equipped with the lifting mechanism for adjusting the height of lamp stand in the box inside on the horizontal top plate of the box top portion. The utility model discloses a lamp inspection appearance for detecting visible foreign matter in sodium hyaluronate gel, when using, through the lifting mechanism can flexibly adjust the height of light source subassembly in the box inside to make light source subassembly and the eye height of detection personnel are adapted, help to improve the precision and quickness of detection personnel observation the visible foreign matter in the substance of placing on the placing table, greatly improve the detection efficiency and detection quality, and help to alleviate the eye fatigue feeling of detection personnel easily due to the height position of light source subassembly is not suitable.

Description

Technical Field

[0001] This utility model relates to the field of detection platform technology, specifically to a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel. Background Technology

[0002] Hyaluronic acid (HA) is a linear polyanionic mucopolysaccharide composed of repeating units of D-glucuronic acid and N-acetyl-D-glucosamine disaccharides. It possesses exceptional water-locking properties and is one of the most effective moisturizing substances found in nature. The cross-linked sodium hyaluronate gel obtained from HA can be used for tissue filling and lubrication. Both cross-linked and non-cross-linked sodium hyaluronate gel products are typically colorless and transparent. During the production and processing of sodium hyaluronate gel products, visible foreign matter inspection is an important method for quality control.

[0003] A light inspection instrument is a device used to inspect for visible foreign objects in liquids or semi-solid substances such as injectable drugs and eye drops. In use, a container holding the substance to be tested is placed on a platform below it, and then the light source above it is turned on, allowing the inspector to check for visible foreign objects. However, existing light inspection instruments have the following problems: due to differences in the height of the inspectors, and the light source being fixed at the top of the instrument, it is difficult to ensure that the height of the light source is compatible with the eye level of each inspector when observing the substance placed on the platform. If the eye level of the inspector is significantly mismatched with the height of the light source, it will prevent the inspector from accurately and quickly observing the visible foreign objects in the substance, even affecting the judgment results; furthermore, a significant mismatch can cause eye fatigue and severely restrict the inspector's work efficiency and inspection quality. Therefore, this utility model proposes a light inspection instrument for detecting visible foreign objects in sodium hyaluronate gel to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a light inspection instrument for detecting visible foreign objects in sodium hyaluronate gel. During use, the height of the light source component inside the housing can be flexibly adjusted via a lifting mechanism, thus adapting the light source component to the eye level of the inspector. This helps improve the accuracy and speed of the inspector's observation of visible foreign objects in the material to be tested placed on the platform, significantly improving detection efficiency and quality. Furthermore, it helps alleviate eye fatigue caused by unsuitable height of the light source component. The overall structure is ingeniously and reasonably designed, with high feasibility for preparation and implementation, and strong practicality.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel, including a box with an opening facing forward, a light holder installed above the inside of the box, a light source assembly installed on the light holder, and a lifting mechanism for adjusting the height of the light holder inside the box installed on a horizontal top plate at the top of the box.

[0006] This invention relates to a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel. During use, the height of the light source assembly inside the housing can be flexibly adjusted via a lifting mechanism, ensuring the light source assembly is at eye level for the inspector. This improves the accuracy and speed of observation of visible foreign matter in the sample placed on the testing platform, significantly increasing detection efficiency and quality. Furthermore, it helps alleviate eye fatigue caused by unsuitable light source height. The overall structure is ingeniously and rationally designed, making it highly feasible and practical.

[0007] A preferred technical solution is that the lifting mechanism includes a screw, an internal threaded sleeve, and a bearing. The internal threaded sleeve is fixedly mounted on the horizontal top plate. The screw is threadedly engaged with the internal threaded sleeve, and its lower end is fixedly mounted in the inner ring of the bearing. The top of the lamp holder is fixedly mounted on the lower end of the outer ring of the bearing. A handwheel is fixedly mounted on the upper end of the screw. The lifting mechanism has a clever and reasonable structural design. The height of the light source assembly inside the housing is adjusted by rotating the screw while holding the handwheel. It is simple to operate and highly practical.

[0008] A further preferred technical solution is that the lamp holder has an n-shaped structure, including a top plate and two support arms fixed to the left and right ends of the lower side of the top plate. The middle of the top plate is fixed to the lower end of the outer ring of the bearing. Each of the two support arms has a mounting seat at its lower end. The mounting seat has a mounting groove for engaging the corresponding end of the light source assembly and a waist-shaped wire hole communicating with the mounting groove. The opening of the mounting groove faces upwards and to the corresponding end of the light source assembly, and the long axis of the waist-shaped wire hole is located in the longitudinal direction. The two ends of the lamp tube are engaged and installed inside the mounting grooves on the mounting seats on the left and right sides of the bracket. The installation and disassembly method is simple, ensuring convenience for lamp tube maintenance or replacement.

[0009] A further preferred technical solution includes a connecting block fixed to the lower end of the outer ring of the bearing in the lifting mechanism. Two ear plates, corresponding to the left and right sides, are fixed to the center of the top plate. The two ear plates and the upper side of the top plate form a second mounting groove. Corresponding mounting holes are provided on the two ear plates and the connecting block. The connecting block is inserted into the second mounting groove and is fixedly connected to the two ear plates by bolt assemblies passing through the corresponding mounting holes on the two ear plates and the connecting block. The connecting block at the lower end of the lifting mechanism is fixedly installed in the second mounting groove on the bracket by bolt assemblies. During use, the angle between the connecting block and the two ear plates can be adjusted to flexibly adjust the illumination angle of the light source assembly, ensuring the optimal light source illumination angle. This allows the inspector to clearly and easily observe whether the material to be tested on the platform contains foreign objects, further improving the comfort and efficiency of the inspection.

[0010] A further preferred technical solution includes a storage platform at the bottom of the housing and an equipment chamber located below the platform. A control circuit board is installed inside the equipment chamber. A control panel and a power switch, electrically connected to the control circuit board, are installed on the outer side of the front panel of the equipment chamber. The control panel includes a display screen, an illuminance adjustment knob, and an illuminance probe connected externally via a wire. The equipment chamber is also connected to a power cord with a plug at one end. In use, the illuminance probe can be extended to the upper surface of the substance to be tested placed on the storage platform, and then adjusted to a suitable illuminance using the illuminance adjustment knob. The illuminance value is displayed on the display screen of the control panel to ensure the accuracy of the actual illuminance irradiated onto the upper surface of the substance to be tested.

[0011] A further preferred technical solution includes an eave body 1 on the left, rear, and right edges of the shelf. The gap between the eave body 1 and the corresponding left, rear, or right side panel of the cabinet forms a slot 1 for inserting the lower edge of the background panel. Similarly, the left, rear, and right edges of the lower side of the horizontal top plate are each provided with an eave body 2. The gap between the eave body 2 and the corresponding left, rear, or right side panel of the cabinet forms a slot 2 for inserting the upper edge of the background panel. In use, a background panel of a suitable color can be affixed to the left, rear, and right side panels of the cabinet, with the upper end of the background panel inserted into the corresponding slot 2 and the lower end inserted into the corresponding slot 1, ensuring convenient placement and replacement of the background panel.

[0012] A further preferred technical solution is that the front edge of the platform is provided with an upwardly extending eave. The eave serves to limit the container holding the substance to be tested, which is placed on the platform, effectively preventing the container from slipping off the platform and ensuring safety during testing.

[0013] A preferred technical solution further includes a light source assembly comprising a lamp tube, two end caps, and a condenser cover. The two end caps are correspondingly installed at both ends of the lamp tube, and each end cap has a wire-passing hole at its center. The condenser cover is positioned over the lamp tube along its length, and its two ends are fixedly connected to the upper ends of the two end caps. The condenser cover concentrates the light emitted by the lamp tube, allowing it to be more effectively focused onto the tabletop, thereby improving the utilization rate of the light source.

[0014] A further preferred technical solution is that the lamp is a D65 LED lamp with a color temperature of 6500K and a power of 10W, with Ra≥95. The D65 LED lamp with a color temperature of 6500K has low power consumption and good illumination performance, which helps to save energy while meeting the illumination requirements for testing.

[0015] Another preferred technical solution is that an inclined top plate that gradually extends downwards and forwards is fixed to the front side of the horizontal top plate.

[0016] The advantages and beneficial effects of this utility model are as follows:

[0017] 1. This utility model discloses a light inspection instrument for detecting visible foreign objects in sodium hyaluronate gel. During use, the height of the light source component inside the housing can be flexibly adjusted through a lifting mechanism, thereby adapting the light source component to the eye level of the inspector. This helps improve the accuracy and speed of the inspector's observation of visible foreign objects in the test material placed on the test platform, significantly improving detection efficiency and quality. It also helps alleviate eye fatigue caused by unsuitable height of the light source component. The structure is ingenious and reasonable, with high feasibility for preparation and implementation, and strong practicality.

[0018] 2. The lifting mechanism has a clever and reasonable structural design. The height of the light source component inside the housing can be adjusted by holding the handwheel and rotating the screw. It is simple to operate and highly practical.

[0019] 3. The two ends of the lamp tube are snapped into the mounting slots on the left and right sides of the bracket, making installation and disassembly simple and ensuring convenience for lamp tube maintenance or replacement.

[0020] 4. The connecting block at the lower end of the lifting mechanism is fixedly installed in the mounting slot 2 on the bracket by bolt assembly. During use, the angle between the connecting block and the two ear plates can be adjusted to flexibly adjust the illumination angle of the light source assembly, so as to ensure the best light source illumination angle. This allows the inspectors to clearly and easily observe whether the material to be tested on the platform contains foreign objects, further improving the comfort and efficiency of the light inspection.

[0021] 5. When using, the illuminance probe can be extended to the upper surface of the substance to be tested placed on the platform, and then the illuminance can be adjusted to a suitable illuminance using the illuminance adjustment knob. The illuminance value is displayed on the screen of the control panel to ensure the accuracy of the actual illuminance irradiated on the upper surface of the substance to be tested.

[0022] 6. When in use, background boards of suitable colors can be attached to the left side panel, rear side panel and right side panel of the box. The upper end of the background board is inserted into the corresponding slot two and the lower end is inserted into the corresponding slot one, ensuring the convenience of placing and replacing the background board.

[0023] 7. The front edge of the platform is provided with an upwardly extending eave. The eave serves to limit the container holding the substance to be tested, which is placed on the platform, effectively preventing the container from slipping off the platform and ensuring safety during testing. Attached Figure Description

[0024] Figure 1 This is a front-view perspective perspective view of a light inspection instrument used to detect visible foreign matter in sodium hyaluronate gel in Example 1;

[0025] Figure 2 This is a longitudinal cross-sectional view of the left side panel;

[0026] Figure 3 This is an assembly diagram of the lifting mechanism, lamp holder, and light source assembly in Example 1;

[0027] Figure 4 This is a partial view of the inner end of the outrigger;

[0028] Figure 5 This is a longitudinal sectional view of the outrigger;

[0029] Figure 6 This is a diagram showing the usage status of a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel, as described in Example 1.

[0030] Figure 7 This is a front-view perspective perspective view of a light inspection instrument used to detect visible foreign matter in sodium hyaluronate gel in Example 2;

[0031] Figure 8 This is an assembly diagram of the lifting mechanism, lamp holder, and light source assembly in Example 2;

[0032] Figure 9 This is a diagram showing the disassembly relationship between the lifting mechanism, lamp holder, and light source assembly in Embodiment 2;

[0033] Figure 10 This is a cross-sectional view of the light source assembly in Embodiment 2;

[0034] Figure 11This is a front view of the light source assembly in Embodiment 2;

[0035] Figure 12 This is a diagram showing the usage status of a light inspection instrument used to detect visible foreign matter in sodium hyaluronate gel, as described in Example 2.

[0036] In the diagram: 1. Housing; 2. Lifting mechanism; 3. Lamp holder; 4. Light source assembly; 5. Eaves 1; 6. Slot 1; 7. Slot 2; 8. Bolt assembly; 9. Eaves 2; 1-1. Storage platform; 1-2. Equipment room; 1-2a. Control panel; 1-2b. Wires; 1-2c. Illuminance probe; 1-3. Horizontal top plate; 1-4. Inclined top plate; 1-5. Left side panel; 1-6. Power switch; 1-7. Power cord; 1-7a, Plug; 1-8, Eaves 3; 2-1, Screw; 2-2, Internal Threaded Sleeve; 2-3, Bearing; 2-4, Handwheel; 2-5, Connecting Block; 3-1, Top Plate; 3-2, Support Arm; 3-3, Mounting Base; 3-3a, Mounting Slot 1; 3-3b, Waist-shaped Wire Hole 1; 3-4, Ear Plate; 3-5, Mounting Slot 2; 4-1, Lamp Tube; 4-2, End Cap; 4-2a, Wire Hole 2; 4-3, Concentrator Cover. Detailed Implementation

[0037] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0038] Example 1

[0039] like Figures 1-6 As shown, a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel includes a box 1 with its opening facing forward. A light holder 3 is installed inside the upper part of the box 1, and a light source assembly 4 is installed on the light holder 3. A lifting mechanism 2 for adjusting the height of the light holder 3 inside the box 1 is installed on a horizontal top plate 1-3 located at the top of the box 1.

[0040] Preferably, the lifting mechanism 2 includes a screw 2-1, an internal threaded sleeve 2-2, and a bearing 2-3. The internal threaded sleeve 2-2 is fixedly mounted on the horizontal top plate 1-3. The screw 2-1 is threadedly connected to the internal threaded sleeve 2-2, and the lower end of the screw 2-1 is fixedly mounted in the inner ring of the bearing 2-3. The top of the lamp holder 3 is fixedly mounted on the lower end of the outer ring of the bearing 2-3. A handwheel 2-4 is fixedly mounted on the upper end of the screw 2-1.

[0041] More preferably, the lamp holder 3 has an n-shaped structure, including a top plate 3-1 and two support arms 3-2 fixed to the left and right ends of the lower side of the top plate 3-1. The middle part of the top plate 3-1 is fixed to the lower end of the outer ring of the bearing 2-3. The lower ends of the two support arms 3-2 are each fixed with a mounting seat 3-3. The mounting seat 3-3 has a mounting groove 3-3a for engaging the corresponding end of the light source assembly 4 and an oblong wire hole 3-3b that communicates with the mounting groove 3-3a. The opening of the mounting groove 3-3a faces upward and to the corresponding end of the light source assembly 4. The long axis of the oblong wire hole 3-3b is located in the longitudinal direction.

[0042] More preferably, the bottom of the housing 1 has a shelf 1-1 and an equipment chamber 1-2 located below the shelf 1-1. A control circuit board is installed inside the equipment chamber 1-2. A control panel 1-2a and a power switch 1-6 electrically connected to the control circuit board are installed on the outer side of the front panel of the equipment chamber 1-2. The control panel 1-2a is equipped with a display screen, an illumination adjustment knob, and an illumination probe 1-2c connected to it via a wire 1-2b. The equipment chamber 1-2 is also connected to a power cord 1-7, and the end of the power cord 1-7 has a plug 1-7a.

[0043] More preferably, the left, rear, and right edges of the shelf 1-1 are each provided with an eave 5, and the gap between the eave 5 and the corresponding left side panel 1-5 of the box 1, or the rear side panel of the box 1, or the right side panel of the box 1 forms a slot 6 for inserting the lower edge of the background panel; the left, rear, and right edges of the lower side of the horizontal top plate 1-3 are each provided with an eave 9, and the gap between the eave 9 and the corresponding left side panel 1-5 of the box 1, or the rear side panel of the box 1, or the right side panel of the box 1 forms a slot 7 for inserting the upper edge of the background panel.

[0044] More preferably, the front edge of the shelf 1-1 is provided with an eave 3-8 extending upward.

[0045] More preferably, the horizontal top plate 1-3 is further fixed with an inclined top plate 1-4 that gradually extends downwards and forwards.

[0046] The operating principle of a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel in Example 1:

[0047] Apply background panels of appropriate color to the inner surfaces of the left side panel 1-5, rear side panel, and right side panel of housing 1 according to usage requirements. Insert the upper end of the background panel into the corresponding slot 2 7 and the lower end into the corresponding slot 1 6 (see attached). Figure 6Turn on the power switch 1-6 and place the container containing the substance to be tested in the center of the platform 1-1. Adjust the light source assembly 4 to a suitable height by turning the handwheel 2-4. Extend the illuminance probe 1-2c above the liquid surface of the substance to be tested and adjust the lamp tube 4-1 to a suitable illuminance by turning the illuminance adjustment knob. The illuminance value is displayed on the display screen on the control panel. Then, remove the illuminance probe 1-2c and place it on the workbench outside the chamber 1. Proceed with the subsequent testing.

[0048] This invention relates to a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel. During use, the height of the light source assembly inside the housing can be flexibly adjusted via a lifting mechanism, ensuring the light source assembly is at eye level for the inspector. This improves the accuracy and speed of observation of visible foreign matter in the sample placed on the testing platform, significantly increasing detection efficiency and quality. Furthermore, it helps alleviate eye fatigue caused by unsuitable light source height. The overall structure is ingeniously and rationally designed, making it highly feasible and practical.

[0049] Example 2

[0050] like Figures 7-12 As shown, a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel differs from the light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel in Example 1 in that: the lifting mechanism 2 further includes a connecting block 2-5 fixed to the lower end of the outer ring of the bearing 2-3; two ear plates 3-4 are fixedly located on the left and right sides of the upper center of the top plate 3-1; the two ear plates 3-4 and the upper side of the top plate 3-1 form a second mounting groove 3-5; corresponding mounting holes are opened on the two ear plates 3-4 and the connecting block 2-5; the connecting block 2-5 is inserted into the second mounting groove 3-5 and is fixedly connected to the two ear plates 3-4 by bolt assemblies 8 passing through the corresponding mounting holes on the two ear plates 3-4 and the connecting block 2-5.

[0051] Preferably, the light source assembly 4 includes a lamp tube 4-1, two end caps 4-2, and a condenser 4-3. The two end caps 4-2 are respectively installed at both ends of the lamp tube 4-1. A wire hole 4-2a is provided in the center of each end cap 4-2. The condenser 4-3 covers the lamp tube 4-1 along its length, and both ends of the condenser 4-3 are fixedly connected to the upper ends of the two end caps 4-2.

[0052] Furthermore, preferably, the lamp tube 4-1 is a D65 LED lamp with a color temperature of 6500K, a power of 10W, and Ra≥95.

[0053] The operating principle of a light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel in Example 2:

[0054] Apply background panels of appropriate color to the inner surfaces of the left side panel 1-5, rear side panel, and right side panel of housing 1 according to usage requirements. Insert the upper end of the background panel into the corresponding slot 2 7 and the lower end into the corresponding slot 1 6 (see attached). Figure 12 Turn on the power switch 1-6 and place the container containing the substance to be tested in the center of the platform 1-1. Adjust the light source assembly 4 to a suitable height by turning the handwheel 2-4. Loosen the nut on the bolt assembly 8, and turn the lamp holder 3 to position the lamp tube 4-1 on the light source assembly 4 at a suitable illumination angle. Then tighten the bolt assembly 8 to re-secure the connecting block 2-5 and the two ear plates 3-4 together. Extend the illuminance probe 1-2c above the liquid surface of the substance to be tested, and adjust the lamp tube 4-1 to a suitable illuminance by turning the illuminance adjustment knob. The illuminance value is displayed on the screen of the control panel. Then remove the illuminance probe 1-2c and place it on the workbench outside the box 1. Proceed with the subsequent testing.

[0055] In Example 2, a light inspection instrument for detecting visible foreign objects in sodium hyaluronate gel has a connecting block at the lower end of the lifting mechanism that is fixedly installed inside the mounting slot 2 on the bracket by bolt assembly. During use, the illumination angle of the light source assembly can be flexibly adjusted by adjusting the fitting angle between the connecting block and the two ear plates to ensure the optimal light source illumination angle. This allows the inspector to clearly and easily observe whether the substance to be tested on the platform contains foreign objects, further improving the comfort and efficiency of the light inspection.

[0056] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel, characterized in that, Includes a box (1) with an opening facing forward, a lamp holder (3) is installed inside the upper part of the box (1), a light source assembly (4) is installed on the lamp holder (3), and a lifting mechanism (2) for adjusting the height of the lamp holder (3) inside the box (1) is installed on the horizontal top plate (1-3) at the top of the box (1). The lifting mechanism (2) includes a screw (2-1), an internal threaded sleeve (2-2), and a bearing (2-3). The internal threaded sleeve (2-2) is fixedly mounted on the horizontal top plate (1-3). The screw (2-1) is threadedly connected to the internal threaded sleeve (2-2), and the lower end of the screw (2-1) is fixedly mounted in the inner ring of the bearing (2-3). The top of the lamp holder (3) is fixedly mounted on the lower end of the outer ring of the bearing (2-3), and a handwheel (2-4) is fixedly mounted on the upper end of the screw (2-1).

2. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in claim 1, characterized in that, The lamp holder (3) has an n-shaped structure, including a top plate (3-1) and two support arms (3-2) fixed to the left and right ends of the lower side of the top plate (3-1). The top plate (3-1) is fixed to the lower end of the outer ring of the bearing (2-3) in the middle. The lower ends of the two support arms (3-2) are fixed with mounting seats (3-3). The mounting seat (3-3) has a mounting groove (3-3a) for snapping on the corresponding end of the light source assembly (4) and a waist-shaped wire hole (3-3b) that is connected to the mounting groove (3-3a). The opening of the mounting groove (3-3a) faces upward and to the corresponding end of the light source assembly (4). The long axis of the waist-shaped wire hole (3-3b) is located in the longitudinal direction.

3. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in claim 2, characterized in that, The lifting mechanism (2) further includes a connecting block (2-5) fixed at the lower end of the outer ring of the bearing (2-3). Two ear plates (3-4) are fixed at the middle of the top plate (3-1) on the left and right sides respectively. The two ear plates (3-4) and the upper side of the top plate (3-1) form a second mounting groove (3-5). The two ear plates (3-4) and the connecting block (2-5) are provided with corresponding mounting holes. The connecting block (2-5) is inserted into the second mounting groove (3-5) and is fixedly connected to the two ear plates (3-4) by bolt assemblies (8) that pass through the corresponding mounting holes on the two ear plates (3-4) and the connecting block (2-5).

4. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in any one of claims 1 to 3, characterized in that, The bottom of the enclosure (1) has a shelf (1-1) and an equipment chamber (1-2) located below the shelf (1-1). The equipment chamber (1-2) is equipped with a control circuit board. The outer side of the front panel of the equipment chamber (1-2) is equipped with a control panel (1-2a) and a power switch (1-6) that are electrically connected to the control circuit board. The control panel (1-2a) is equipped with a display screen, an illuminance adjustment knob, and an illuminance probe (1-2c) connected to the outside via a wire (1-2b). The equipment chamber (1-2) is also connected to a power cord (1-7), and the end of the power cord (1-7) has a plug (1-7a).

5. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in claim 4, characterized in that, The left, rear and right edges of the shelf (1-1) are provided with an eave body 1 (5). The gap between the eave body 1 (5) and the left side plate (1-5) of the corresponding box (1), or the rear side plate of the box (1), or the right side plate of the box (1) forms a slot 1 (6) for inserting the lower edge of the background plate. The left, rear and right edges of the lower side of the horizontal top plate (1-3) are provided with an eave body 2 (9). The gap between the eave body 2 (9) and the left side plate (1-5) of the corresponding box (1), or the rear side plate of the box (1), or the right side plate of the box (1) forms a slot 2 (7) for inserting the upper edge of the background plate.

6. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in claim 5, characterized in that, The front edge of the shelf (1-1) is provided with an eave (1-8) that extends upward.

7. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in claim 1, characterized in that, The light source assembly (4) includes a lamp tube (4-1), two end caps (4-2) and a condenser (4-3). The two end caps (4-2) are installed at the two ends of the lamp tube (4-1). The end caps (4-2) have a wire hole (4-2a) in the center. The condenser (4-3) covers the lamp tube (4-1) along the length direction, and the two ends of the condenser (4-3) are fixedly connected to the upper ends of the two end caps (4-2).

8. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in claim 7, characterized in that, The lamp tube (4-1) is a D65 LED lamp with a color temperature of 6500K and a power of 10W, Ra≥95.

9. The light inspection instrument for detecting visible foreign matter in sodium hyaluronate gel as described in claim 1, characterized in that, An inclined top plate (1-4) that gradually extends forward and downward is also fixed to the front side of the horizontal top plate (1-3).

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