Antifouling type ultramicro spectrophotometer

Abstract

The application discloses an anti-fouling ultramicro spectrophotometer and relates to the technical field of ultramicro spectrophotometers.The anti-fouling ultramicro spectrophotometer comprises a spectrophotometer body, an anti-fouling mechanism arranged above the spectrophotometer body, an anti-fouling slide plate contained in the anti-fouling mechanism and slidingly installed above a bearing base, a locking mechanism arranged at the back of the top surface of the spectrophotometer body and comprising guide sliding grooves arranged on the left and right sides of the back of the top surface of the spectrophotometer body.The anti-fouling ultramicro spectrophotometer is used for limiting the rotary pressing plate through the locking mechanism of the spectrophotometer body, protecting the sample loading point, driving the anti-fouling slide plate to reciprocally slide through the rotary pressing plate, reciprocally rotating the dust-free cleaning brush device and cleaning the anti-fouling slide plate and the dust-free cleaning brush device after each detection, so that the cleanliness of the anti-fouling slide plate and the dust-free cleaning brush device is maintained and the samples are prevented from being mutually contaminated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ultramicro spectrophotometry, and particularly relates to an anti-pollution ultramicro spectrophotometer. BACKGROUND

[0002] The ultramicro spectrophotometer is a high-precision optical analysis instrument, which is mainly used for measuring the absorption characteristics of a trace sample to specific wavelength light, so as to determine the concentration of a target substance in the sample, and only needs a trace sample, is suitable for detection of precious or high-cost samples (such as rare biological samples, nucleic acids and proteins), and is usually used for nucleic acid analysis, protein detection and enzyme activity research. During each use of the ultramicro spectrophotometer, the loading point for loading the sample needs to be cleaned manually.

[0003] The application with the announcement number CN109632668A discloses an atomic absorption spectrophotometer. The sliding block with a cleaning brush is arranged in the smoke collecting cover, the sliding block is arranged in the sliding frame which can move back and forth along the axial direction of the smoke collecting cover, the cleaning brush is used to clean the impurities in the smoke collecting cover, and then the collected impurities are sent out through the material receiving mechanism. The smoke collecting cover does not need to be disassembled and cleaned, and the convenience of cleaning the inside of the smoke collecting cover is improved.

[0004] The application with the announcement number CN115656075A discloses a spectrophotometer capable of continuously feeding samples. The sample box is used to collect the samples after detection, the cleaning box is used to collect the sewage generated in the cleaning process of the cleaning head, and the storage box is used to collect the cuvettes after cleaning, drying and cleaning. The sample box, the cleaning box and the storage box are all arranged as drawer type boxes, so that the operator can easily pull out the sample box and the cleaning box for processing, and the operator can easily pull out the storage box to take out the cuvettes for continuous use.

[0005] However, the above-mentioned spectrophotometer capable of realizing self-cleaning still has the following problems in actual use: although the sample stage is cleaned by the reciprocating sliding frame, the driving device needs to be provided to drive the reciprocating sliding frame to move, and the reciprocating sliding frame cannot be cleaned automatically after cleaning the sample stage, so that cross contamination is caused during reciprocating movement. In addition, the turnover plate of the spectrophotometer cannot be limited, and the sample stage is easily contaminated due to turnover during movement.

[0006] Therefore, the anti-pollution ultramicro spectrophotometer is proposed to solve the above-mentioned problems. SUMMARY

[0007] The present application aims to provide an anti-fouling ultramicro spectrophotometer, to solve the problem that the existing cleaning of the sample stage is performed by reciprocating sliding frame, but such cleaning needs to be driven by the equipped driving device, and after cleaning the sample stage, the sliding frame cannot be cleaned autonomously, thereby causing cross contamination during reciprocating movement, and the turnover plate of such spectrophotometer cannot be limited, and is prone to turn over during movement, causing the sample stage to be contaminated.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an anti-fouling ultramicro spectrophotometer, comprising a spectrophotometer body, and an operation screen fixedly installed on the front face of the spectrophotometer body;

[0009] Wherein, a bearing base is arranged at the center position of the top surface of the spectrophotometer body, and an upper sample loading point is arranged in front of the top surface of the bearing base; further comprising:

[0010] An anti-fouling mechanism is arranged above the spectrophotometer body, and the anti-fouling mechanism comprises an anti-fouling slide plate, and the anti-fouling slide plate is slidingly installed above the bearing base;

[0011] A locking mechanism is arranged at the rear of the top surface of the spectrophotometer body, and the locking mechanism comprises guide sliding grooves opened on the left and right sides of the rear of the top surface of the spectrophotometer body, and the locking mechanism comprises a locking slide rod slidingly installed in the guide sliding grooves.

[0012] Preferably, a positioning base is fixedly installed at the rear middle part of the top surface of the spectrophotometer body, and the bottom end of a rotating pressure plate is rotatably connected to the inside upper part of the positioning base through a bearing, and the rotating pressure plate is used to cover the bearing base and the upper sample loading point on the top surface by turning down, and the sample on the upper sample loading point is shielded by the rotating pressure plate.

[0013] Preferably, the inside left and right sides of the anti-fouling slide plate of the anti-fouling mechanism are elastically slidingly matched with the side edges of the bearing base through protrusions, and the anti-fouling slide plate is used to wipe and clean the upper sample loading point on the top surface of the bearing base by sliding.

[0014] Preferably, the anti-fouling mechanism comprises a transmission shaft, and the transmission shaft is rotatably installed at the inside center position of the positioning base through a bearing, and a main bevel gear is fixedly arranged at the top end of the transmission shaft, and the main bevel gear is meshingly connected to a secondary bevel gear at the middle part of the bottom end of the rotating pressure plate, and the diameter of the secondary bevel gear is greater than that of the main bevel gear.

[0015] Preferably, the anti-fouling mechanism comprises an incomplete gear and a drive gear connected with each other, the incomplete gear is fixedly installed at the bottom end of the transmission shaft, the drive gear is rotatably installed at the rear interior of the bearing base by a torsion spring, the bottom end of the drive gear is wound and connected to the rear end of the main traction cable at the bottom shaft of the bearing base, and the front end of the main traction cable is fixedly connected to the bottom surface of the anti-fouling slide plate.

[0016] Preferably, the anti-fouling mechanism comprises a decontamination guide groove, the decontamination guide groove is opened in the rear interior of the bearing base, a decontamination collection disc is rotatably arranged in the interior of the decontamination guide groove by a torsion spring, a dustless cleaning brush is eccentrically installed on the top surface of the decontamination collection disc, the bottom surface of the decontamination collection disc is wound and connected to the front end of the auxiliary traction cable at the bottom shaft, and the rear end of the auxiliary traction cable is wound and connected to the bottom shaft at the upper end of the drive gear.

[0017] Preferably, the anti-fouling mechanism comprises a decontamination sprayer fixedly installed at the middle part of the rear top surface of the bearing base, the decontamination sprayer is through-connected to the dustless cleaning brush above the decontamination collection disc at the bottom end, decontamination conveying cylinders are fixedly installed on the left and right sides of the bearing base, a pressure piston is elastically and slidably arranged in the interior of the decontamination conveying cylinder, and the rear end of the decontamination conveying cylinder is through-connected to the decontamination sprayer and a decontamination water tank fixedly installed on the top surface of the photometer body.

[0018] Preferably, the pressure piston of the anti-fouling mechanism is slidably extruded and reset by the anti-fouling slide plate, the reset pressure piston supplies liquid to the decontamination conveying cylinder in one direction through the decontamination water tank, the extruded pressure piston delivers the liquid in the decontamination conveying cylinder to the through-connected decontamination sprayer, the decontamination sprayer cleans the dustless cleaning brush, and the decontamination collection disc collects the decontaminated liquid.

[0019] Preferably, the locking mechanism comprises positioning slot holes opened on the left and right sides of the bottom end of the rotating pressing plate, the positioning slot holes are used for inserting and connecting with the top end of the locking slide rod to limit the rotating pressing plate, the locking slide rod and the guide slide groove are connected with each other through an elastic slide rod, and the locking slide rod is in an inverted "L" shape structure.

[0020] Preferably, the locking mechanism comprises support feet elastically and slidably arranged at the four corners of the bottom surface of the photometer body, the top end of each of the support feet on the rear left and right sides is fixedly installed with a resisting slide rod, the top end of the resisting slide rod is slidably attached to the bottom end of the elastic slide rod, the attachment of the elastic slide rod and the resisting slide rod is in a bevel structure, and the photometer body is placed and then lifted by the support feet and the resisting slide rods, the resisting slide rods are extruded and slid outward, and then the rotating pressing plate is unlocked for sample detection operation.

[0021] Compared with the prior art, the present application has the advantages that the anti-fouling ultramicro spectrophotometer can limit the rotary pressing plate through the locking mechanism of the spectrophotometer body, protect the sample loading point, drive the decontamination slide plate to reciprocate by turning over the rotary pressing plate, and rotate the dust-free cleaning brush device reciprocally, so that the anti-fouling slide plate and the dust-free cleaning brush device can be cleaned after each detection to maintain the cleanliness of the anti-fouling slide plate and the dust-free cleaning brush device and avoid sample contamination.

[0022] 1. The rotary pressing plate above the spectrophotometer body is inserted through the locking slide rods on the left and right sides to cover the sample loading point above the bearing base in a horizontal state to protect the sample loading point from falling and contamination during movement and transportation.

[0023] When the spectrophotometer body is placed, the support feet are pressed to rise, and then the abutting slide rods press the locking slide rods through the inclined surface to make the locking slide rods slide outward to disengage from the insertion of the positioning slot hole, so that the rotary pressing plate can be normally rotated to open and then perform subsequent detection work.

[0024] 2. When the rotary pressing plate is rotated upward by 45°, the meshed transmission shaft and the incomplete gear are rotated to drive the gear to rotate when meshing and reset when disengaging, thereby relaxing the main traction cable at the bottom and making the elastically connected protective slide plate slide forward to clean the sample loading point on the top surface of the bearing base to avoid the influence of residual samples on subsequent detection.

[0025] The rotary pressing plate is rotated from 45° to a vertical state, the incomplete gear is disengaged from the drive gear, and after the drive gear resets, the main traction cable is wound to make the main traction cable drive the anti-fouling slide plate to move backward, disengage from the cleaning of the sample loading point, and move to the top of the dust-free cleaning brush device for cleaning.

[0026] 3. When the anti-fouling slide plate moves forward, the abutting pressure piston resets forward, thereby generating negative pressure to attract the cleaning liquid inside the decontamination water tank, and when the anti-fouling slide plate resets backward, the pressure piston abuts, thereby delivering the cleaning liquid inside the decontamination delivery cylinder to the decontamination sprayer to spray and clean the dust-free cleaning brush device, while the decontamination collection disc collects.

[0027] 4. During the rotation of the incomplete gear in the decontamination guide groove at the rear of the bearing base, the decontamination collection disc and the top dust-free cleaning brush device are eccentrically rotated to move to the decontamination sprayer for cleaning, at this time the anti-fouling slide plate decontaminates the sample loading point, and when the incomplete gear resets, the decontamination collection disc and the top dust-free cleaning brush device rotate to the front, and after the anti-fouling slide plate resets, the dust-free cleaning brush device cleans it to maintain the cleanliness of the anti-fouling slide plate and the dust-free cleaning brush device and avoid sample contamination. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the whole structure schematic diagram of the invention;

[0029] Figure 2 It is the structure schematic diagram of the invention after the rotating press plate is turned over;

[0030] Figure 3 It is the structure schematic diagram of the invention of the supporting bottom foot and the resisting slide bar;

[0031] Figure 4 It is the structure schematic diagram of the invention Figure 3 It is the enlarged structure schematic diagram of A in the invention;

[0032] Figure 5 It is the structure schematic diagram of the invention of the locking slide bar and the resisting slide bar extrusion;

[0033] Figure 6 It is the structure schematic diagram of the invention after the anti-fouling slide plate slides;

[0034] Figure 7 It is the structure schematic diagram of the invention after the anti-fouling slide plate resets;

[0035] Figure 8 It is the structure schematic diagram of the invention of the dirt-removing sprayer and the dustless cleaning brush distributor;

[0036] Figure 9 It is the structure schematic diagram of the invention Figure 8 It is the enlarged structure schematic diagram of B in the invention;

[0037] Figure 10 It is the structure schematic diagram of the invention of the dirt-removing collection disc installation;

[0038] Figure 11 It is the structure schematic diagram of the invention Figure 10 It is the enlarged structure schematic diagram of C in the invention.

[0039] In the figure: 1, luminometer body; 2, operation screen; 3, bearing base; 4, upper sample loading point; 5, anti-fouling slide plate; 6, guide slide groove; 7, locking slide bar; 8, positioning base; 9, rotating press plate; 10, transmission rotating shaft; 11, main bevel gear; 12, auxiliary bevel gear; 13, incomplete gear; 14, driving gear; 15, main traction cable; 16, dirt-removing guide groove; 17, dirt-removing collection disc; 18, dustless cleaning brush; 19, auxiliary traction cable; 20, dirt-removing sprayer; 21, dirt-removing conveying cylinder; 22, pressure piston; 23, dirt-removing water tank; 24, positioning groove hole; 25, elastic slide bar; 26, supporting bottom foot; 27, resisting slide bar. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0041] Please refer to Figures 1-11 The present application provides the following technical solutions:

[0042] Embodiment 1: In order to solve the problems existing in the use of the existing ultramicro spectrophotometer, the present embodiment discloses the following technical scheme, an anti-fouling ultramicro spectrophotometer, which comprises a spectrophotometer body 1 and an operation screen 2 fixedly installed on the front face of the spectrophotometer body 1; a positioning base 8 is fixedly installed on the top rear middle part of the spectrophotometer body 1, and the inside upper part of the positioning base 8 is rotatably connected to the bottom end of a rotating pressing plate 9 through a bearing, and the rotating pressing plate 9 is used to cover the sample loading point 4 on the top surface of the bearing base 3 by turning down, and the sample on the sample loading point 4 is shielded by the rotating pressing plate 9.

[0043] A locking mechanism is arranged on the top rear face of the spectrophotometer body 1, and the locking mechanism comprises guide sliding grooves 6 opened on the left and right sides of the top rear face of the spectrophotometer body 1, and the locking mechanism comprises locking sliding rods 7 slidingly installed in the guide sliding grooves 6; the locking mechanism comprises positioning slot holes 24 opened on the left and right sides of the bottom end of the rotating pressing plate 9, and the positioning slot holes 24 are used to insert the top ends of the locking sliding rods 7 to limit the rotating pressing plate 9, and the locking sliding rods 7 and the guide sliding grooves 6 are connected to each other through elastic sliding rods 25, and the locking sliding rods 7 are in an inverted "L" shape structure; the locking mechanism comprises supporting feet 26 elastically sliding at the four corners of the bottom surface of the spectrophotometer body 1, and the top ends of the supporting feet 26 on the left and right rear sides are fixedly installed with abutting sliding rods 27, and the top ends of the abutting sliding rods 27 are slidingly attached to the bottom ends of the elastic sliding rods 25, and the abutting parts of the elastic sliding rods 25 and the abutting sliding rods 27 are in a bevel structure, and the spectrophotometer body 1 is placed and then lifted by the supporting feet 26 and the abutting sliding rods 27, the abutting sliding rods 27 are extruded and slid outward, and then the rotating pressing plate 9 is unlocked to realize sample detection work.

[0044] As Figures 2-5 shown, the spectrophotometer body 1 is connected with the rotating pressing plate 9 through the bottom positioning base 8, and the sample loading point 4 on the top surface of the bearing base 3 is shielded and protected, and the rotating pressing plate 9 in the initial state is inserted with the locking sliding rods 7 through the opened positioning slot holes 24, so that the rotating pressing plate 9 cannot be rotated, and the sample loading point 4 is prevented from being contaminated during storage and transportation.

[0045] Further, when the photometer body 1 is used, the supporting feet 26 at the four corners of the bottom surface thereof are in contact with the placement table, so that the supporting feet 26 are lifted by the gravity of the photometer body 1, so that the rear supporting feet 26 drive the top end of the abutting slide rod 27 to extrude and fit the locking slide rod 7, and after the locking slide rod 7 is extruded by the inclined surface structure, the locking slide rod 7 is compressed to be separated from the insertion of the positioning slot hole 24, so that the rotary pressing plate 9 is in the unlocked state to realize the work of the photometer body 1.

[0046] In order to solve the problems existing in the use of the existing ultramicro spectrophotometer, the photometer body 1 is provided with a dirt-proof mechanism, and the dirt-proof mechanism comprises a dirt-proof slide plate 5 which is slidingly installed above the bearing base 3.

[0047] The dirt-proof mechanism comprises a transmission shaft 10 which is rotatably installed at the inner center position of the positioning base 8 through a bearing, and the top end of the transmission shaft 10 is fixedly provided with a main bevel gear 11, and the main bevel gear 11 is meshingly connected to a secondary bevel gear 12 at the bottom end middle shaft of the rotary pressing plate 9, and the diameter of the secondary bevel gear 12 is greater than that of the main bevel gear 11.

[0048] The dirt-proof mechanism comprises an incomplete gear 13 and a driving gear 14 which are meshingly connected to each other, the incomplete gear 13 is fixedly installed at the bottom end of the transmission shaft 10, and the driving gear 14 is rotatably installed at the rear inner part of the bearing base 3 through a torsion spring, and the bottom end shaft of the driving gear 14 at the outer part of the bottom surface of the bearing base 3 is wound and connected to the rear end of a main traction cable 15, and the front end of the main traction cable 15 is fixedly connected to the bottom surface of the dirt-proof slide plate 5.

[0049] As shown in Figures 6-7 , Figures 10-11 The rotary pressing plate 9 connected to the positioning base 8 above the photometer body 1 is turned over (the rotary pressing plate 9 is rotated from the horizontal state to 45°) by manual operation, the bottom end shaft is meshed between the secondary bevel gear 12 and the main bevel gear 11, so that the transmission shaft 10 drives the fixed bottom end of the incomplete gear 13 to meshingly drive the driving gear 14 to rotate, so that the driving gear 14 is rotated to relax the main traction cable 15, so that the main traction cable 15 drives the fixedly connected dirt-proof slide plate 5 to relax, and the elastically connected dirt-proof slide plate 5 slides to the front of the bearing base 3 to the sample loading point 4 to realize cleaning and removing dirt.

[0050] Further, the rotating pressure plate 9 continues to flip after (from 45° rotation to vertical state) the secondary bevel gear 12 continues to engage the main bevel gear 11 to drive the transmission shaft 10 and the incomplete gear 13, after the incomplete gear 13 and the drive gear 14 disengage, the drive gear 14 connected by the torsional spring will wind the main traction cable 15 at the bottom end of the shaft, so that the main traction cable 15 drives the front anti-fouling slide plate 5 to move backward, and then moves above the decontamination guide groove 16 after the decontamination of the anti-fouling slide plate 5 to the sample loading point 4, and then does not shield the detection work of the sample loading point 4.

[0051] In order to solve the problems existing in the use of the existing ultramicro spectrophotometer, the technical scheme is disclosed in the embodiment, the anti-fouling mechanism comprises a decontamination guide groove 16, which is arranged inside the rear of the bearing base 3, and the inside of the decontamination guide groove 16 is provided with a decontamination collection disc 17 which is rotatably arranged by a torsional spring, and the top surface of the decontamination collection disc 17 is eccentrically provided with a dust-free cleaning brush 18, and the bottom shaft of the decontamination collection disc 17 is wound and connected to the front end of a secondary traction cable 19, and the rear end of the secondary traction cable 19 is wound and connected to the shaft at the upper end of the drive gear 14.

[0052] The anti-fouling mechanism comprises a decontamination sprayer 20 fixedly installed on the top surface of the bearing base 3 at the rear middle part, and the bottom end of the decontamination sprayer 20 is connected to the dust-free cleaning brush 18 above the decontamination collection disc 17, and the left and right sides of the bearing base 3 are fixedly provided with decontamination conveying cylinders 21, and the inside of the decontamination conveying cylinder 21 is elastically and slidably provided with a pressure piston 22, and the rear end of the decontamination conveying cylinder 21 is respectively connected to the decontamination sprayer 20 and a decontamination water tank 23 fixedly installed on the top surface of the spectrophotometer body 1.

[0053] The pressure piston 22 of the anti-fouling mechanism is extruded and reset by the sliding of the anti-fouling slide plate 5, so that the reset pressure piston 22 supplies liquid to the decontamination conveying cylinder 21 through the decontamination water tank 23 in one direction, and the extruded pressure piston 22 delivers the liquid in the decontamination conveying cylinder 21 to the decontamination sprayer 20 connected thereto, and the decontamination sprayer 20 cleans the dust-free cleaning brush 18, and the decontamination collection disc 17 collects the decontaminated liquid.

[0054] As Figures 7-9As shown, the anti-fouling slide plate 5 above the bearing base 3 no longer collides with the pressure piston 22 elastically connected inside the decontamination conveying cylinder 21 during forward sliding, so that the pressure piston 22 slides forward, and the decontamination water tank 23 connected in one-way penetrates to deliver the cleaning liquid inside the decontamination conveying cylinder 21 by negative pressure, and the decontamination conveying cylinder 21 again collides with the pressure piston 22 to slide backward when the anti-fouling slide plate 5 slides back to reset, so that the cleaning liquid stored inside the decontamination conveying cylinder 21 is sprayed by the decontamination sprayer 20 connected in one-way penetration, so that the decontamination sprayer 20 sprays downward to clean the dustless brush 18, and the excess cleaning liquid is collected by the decontamination collection disc 17 to avoid external overflow.

[0055] As shown in Figure 6 , Figures 8-11 the driving gear 14 at the bottom of the bearing base 3 engages the incomplete gear 13, and the rotating driving gear 14 drives the secondary traction cable 19 to be wound, so that the secondary traction cable 19 drives the decontamination collection disc 17 and the dustless brush 18 eccentrically installed on the top surface to rotate, so that the dustless brush 18 rotates to the side close to the anti-fouling slide plate 5 and cleans the bottom surface of the anti-fouling slide plate 5, and after the anti-fouling slide plate 5 slides again, the decontamination collection disc 17 and the dustless brush 18 are rotated to the initial position by the reset of the driving gear 14, and cleaned again by the decontamination sprayer 20, so that the anti-fouling slide plate 5 and the dustless brush 18 can be cleaned after each detection to maintain the cleanliness of the anti-fouling slide plate 5 and the dustless brush 18, avoiding mutual contamination of samples.

[0056] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-fouling type ultramicro spectrophotometer, comprising a spectrophotometer body (1), and an operation screen (2) fixedly installed on the front face of the spectrophotometer body (1); wherein A bearing base (3) is arranged at the center of the top face of the spectrophotometer body (1), and an upper sample loading point (4) is arranged at the front of the top face of the bearing base (3); characterized in that it further comprises: An anti-fouling mechanism is arranged above the spectrophotometer body (1), and the anti-fouling mechanism comprises an anti-fouling slide plate (5) which is slidingly installed above the bearing base (3); A locking mechanism is arranged at the rear of the top face of the spectrophotometer body (1), and the locking mechanism comprises guide sliding grooves (6) which are arranged on the left and right sides of the rear of the top face of the spectrophotometer body (1), and the locking mechanism comprises a locking slide rod (7) which is slidingly installed in the guide sliding grooves (6); A positioning base (8) is fixedly installed at the rear of the top face of the spectrophotometer body (1), and a rotating pressure plate (9) is rotatably connected to the bottom end of the positioning base (8) through a bearing at the top inside of the positioning base (8), and the rotating pressure plate (9) is used to cover the bearing base (3) and the upper sample loading point (4) on the top face by being flipped downward, and the sample on the upper sample loading point (4) is shielded by the rotating pressure plate (9); The inside left and right sides of the anti-fouling slide plate (5) of the anti-fouling mechanism are elastically slidingly matched with the side edges of the bearing base (3) through protrusions, and the anti-fouling slide plate (5) is used to wipe and clean the upper sample loading point (4) on the top face of the bearing base (3) by sliding; The anti-fouling mechanism comprises a transmission shaft (10) which is rotatably installed at the inside center position of the positioning base (8) through a bearing, and the top end of the transmission shaft (10) is fixedly provided with a main bevel gear (11), and the main bevel gear (11) is meshingly connected to a secondary bevel gear (12) at the shaft of the middle part of the bottom end of the rotating pressure plate (9), and the diameter of the secondary bevel gear (12) is greater than that of the main bevel gear (11); The anti-fouling mechanism comprises an incomplete gear (13) and a driving gear (14) which are meshingly connected to each other, the incomplete gear (13) is fixedly installed at the bottom end of the transmission shaft (10), and the driving gear (14) is rotatably installed at the rear inside of the bearing base (3) through a torsion spring, and the bottom end shaft of the driving gear (14) on the outside of the bottom face of the bearing base (3) is wound and connected to the rear end of a main traction steel cable (15), and the front end of the main traction steel cable (15) is fixedly connected to the bottom face of the anti-fouling slide plate (5).

2. The anti-fouling type ultra-micro spectrophotometer according to claim 1, characterized in that: The anti-fouling mechanism comprises a decontamination guide groove (16) which is arranged at the rear inside of the bearing base (3), and a decontamination collection disc (17) is rotatably arranged in the decontamination guide groove (16) through a torsion spring, and a dustless cleaning brush (18) is eccentrically installed on the top face of the decontamination collection disc (17), and the bottom shaft of the decontamination collection disc (17) is wound and connected to the front end of a secondary traction steel cable (19), and the rear end of the secondary traction steel cable (19) is wound and connected to the shaft at the upper end of the driving gear (14).

3. The anti-fouling type ultra-micro spectrophotometer according to claim 2, characterized in that: The dirt-proof mechanism comprises a dirt-removing sprayer (20) fixedly installed at the middle back of the top surface of the bearing base (3), and the bottom end of the dirt-removing sprayer (20) is connected to the top of the dirt-removing collection disc (17) through a dustless cleaning brush (18), and dirt-removing conveying cylinders (21) are fixedly installed on the left and right sides of the bearing base (3), and a pressure piston (22) is elastically and slidably arranged in the dirt-removing conveying cylinder (21), and the rear end of the dirt-removing conveying cylinder (21) is connected to the dirt-removing sprayer (20) and a dirt-removing water tank (23) fixedly installed on the top of the photometer body (1) respectively.

4. The anti-fouling type ultra-micro spectrophotometer according to claim 3, characterized in that: The pressure piston (22) of the dirt-proof mechanism is extruded and reset by sliding through the dirt-proof sliding plate (5), so that the reset pressure piston (22) supplies liquid to the dirt-removing conveying cylinder (21) through the dirt-removing water tank (23) in one direction, and the extruded pressure piston (22) delivers the liquid in the dirt-removing conveying cylinder (21) to the dirt-removing sprayer (20) connected thereto, and the dirt-removing sprayer (20) cleans the dustless cleaning brush (18), and the dirt-removing collection disc (17) collects the liquid after dirt removal.

5. The anti-fouling type ultra-micro spectrophotometer according to claim 1, characterized in that: The locking mechanism comprises positioning slot holes (24) opened at the bottom ends of the left and right sides of the rotating pressing plate (9), and the positioning slot holes (24) are used for inserting the top end of the locking sliding rod (7) to limit the rotating pressing plate (9), and the locking sliding rod (7) and the guide sliding groove (6) are connected to each other through the elastic sliding rod (25), and the locking sliding rod (7) is in an inverted "L" shape structure.

6. The anti-fouling type ultra-micro spectrophotometer according to claim 5, characterized in that: The locking mechanism comprises support feet (26) elastically and slidably arranged at the four corners of the bottom surface of the photometer body (1), the top ends of the support feet (26) on the left and right sides at the back are fixedly installed with abutting sliding rods (27), the top ends of the abutting sliding rods (27) are slidably attached to the bottom ends of the elastic sliding rods (25), the abutting parts of the elastic sliding rods (25) and the abutting sliding rods (27) are in a beveled structure, and the photometer body (1) is placed and lifted through the support feet (26) and the abutting sliding rods (27), the abutting sliding rods (27) are extruded and slid outward, and then the rotating pressing plate (9) is unlocked for sample detection operation.

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