Colorimetric cuvette cleaning mechanism

Abstract

The application discloses a cuvette cleaning mechanism, which comprises a through hole, a hollow tube, a piston rod and a cleaning end, the through hole is arranged at the center of an acid and alkali prevention block, and a piston pad is arranged at the upper end of the piston rod; a chamber one is formed between the piston pad and the hollow tube, and a chamber two is formed in the piston rod; when cleaning solution enters the hollow tube, part of the cleaning solution fills the chamber one, a positive pressure is formed in the chamber one, the piston pad and the piston rod are driven to move downwards, and part of the cleaning solution fills the chamber two to flush the inner wall of a containing cuvette; the cuvette cleaning mechanism has the beneficial effects that the positive pressure formed by the cleaning solution entering the chamber one pushes the piston rod to move downwards, the cleaning end is extended into the containing cuvette, pressure is released after cleaning, and the compression spring is automatically reset; the first bearing of the cleaning end supports the circular rotating box to rotate freely, the axis of the row hole is arranged to be inclined to the radius direction, a tangential reaction force of a jet flow is generated to drive the circular rotating box to rotate at a high speed, a rotating jet flow which sweeps in a circumferential direction is formed, and the inner wall of the containing cuvette is uniformly flushed.

Description

Technical Field

[0001] This invention relates to the field of cuvette cleaning technology, and more specifically, to cuvette cleaning mechanisms. Background Technology

[0002] The current cuvette cleaning process usually requires manual removal of the cuvette from the testing equipment, followed by transfer to a dedicated cleaning container for soaking, rinsing, or ultrasonic cleaning, and then reinstallation. This process is not only cumbersome and time-consuming, but also prone to causing bumps, scratches, or contamination of the cuvette during disassembly and reassembly, affecting the accuracy of subsequent spectral detection. Although some automated cleaning devices can achieve spray rinsing, their cleaning end structure is simple and the rinsing angle is fixed, making it difficult to thoroughly remove the deposits (especially dried or sticky residues) on the inner wall of the colorimetric cuvette, resulting in poor cleaning effect. Summary of the Invention

[0003] To address the above shortcomings, this invention provides a cuvette cleaning mechanism, which solves the technical problems of tedious manual cleaning and poor cleaning effect.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The cuvette cleaning mechanism includes a housing, a mounting frame, a beam head, a cleaning solution, and a holding dish, and also includes: An acid- and alkali-resistant block one is set at the upper end of the fixed frame and an acid- and alkali-resistant block two is set at the lower end of the fixed frame. The two ends of the container are fixedly connected to the acid- and alkali-resistant block one and the acid- and alkali-resistant block two, respectively, forming a sealed cavity inside the container. The acid and alkali resistant block one is equipped with a solenoid valve one to control the gas in and out of the sealed cavity and control the pressure in the sealed cavity; the acid and alkali resistant block two is equipped with a solenoid valve two to control the liquid to be tested in and out. The system includes a through hole, a hollow tube, a piston rod, and a cleaning end. The through hole is located at the center of the acid and alkali resistant block. One end of the hollow tube is sealed, and the other end is connected to the through hole. The piston rod slides up and down in the through hole. A piston pad is provided at the upper end of the piston rod. A first chamber is formed between the piston pad and the hollow tube, and a second chamber is formed inside the piston rod. When the cleaning solution enters the hollow tube, part of the cleaning solution fills chamber one, creating positive pressure in chamber one, which drives the piston pad and piston rod to move downwards; part of the cleaning solution fills chamber two and is discharged from the cleaning end to form a rinsing flow, rinsing the inner wall of the container; a compression spring is provided between the piston rod and the acid and alkali resistant block one for piston rod reset.

[0005] Furthermore, the cleaning end includes a first bearing installed at the lower end of the piston rod, a circular rotating box installed on the outside of the first bearing, the circular rotating box being connected to the piston rod, the side wall of the circular rotating box being provided with drainage holes, the axis of the drainage holes being inclined to the radius of the circular rotating box; the bottom of the circular rotating box being provided with a conical protrusion.

[0006] Furthermore, the side wall of the circular rotating box is provided with an arc-shaped recess, and an arc-shaped plate is hinged in the arc-shaped recess. The arc-shaped plate is made of rubber material, and a torsion spring is installed between the arc-shaped plate and the arc-shaped recess. When the circular rotating box rotates, it generates centrifugal force, which counteracts the elastic force of the torsion spring, causing one end of the arc-shaped plate to contact the container.

[0007] Furthermore, a limiting tube is installed on the side wall of the circular rotating box, forming an elevation angle with the horizontal plane. A moving rod is provided inside the limiting tube, and a rubber plate is provided at one end of the moving rod. A limiting component is provided between the limiting tube and the moving rod. The centrifugal force of the rotating circular box drives the rubber plate to adhere to the inner wall of the container.

[0008] Furthermore, the fixed frame has an opening, the upper end of the hollow tube has a pulse valve, the lower end of the box has a holding bottle, a connecting pipe is provided between the pulse valve and the holding bottle, and a liquid pump is provided on the side wall of the box. The liquid pump drives the cleaning solution to be pumped into the hollow tube; the liquid pump can reverse to draw liquid, and a negative pressure can be formed inside the circular rotating box, which is conducive to the automatic reset of the moving rod.

[0009] Furthermore, the outer wall of the container is equipped with heating wires.

[0010] Furthermore, the side wall of the fixed frame is provided with a transparent cover plate.

[0011] Furthermore, a sliding sealing valve is provided at the lower end of the through hole.

[0012] Compared with the prior art, the beneficial effects of this invention are as follows: the positive pressure formed when the cleaning solution enters the chamber pushes the piston rod downward, allowing the cleaning end to extend into the container. After cleaning, the pressure is released, and the compression spring automatically returns to its original position. The structure is compact and the operation is reliable, requiring no additional power source. The first bearing of the cleaning end supports the free rotation of the circular rotating box. The axis of the exhaust hole is inclined to the radial direction, so that the jet generates a tangential reaction force to drive the circular rotating box to rotate at high speed, forming a circumferentially sweeping rotating jet that uniformly and thoroughly rinses the inner wall of the container, improving the cleaning effect. An arc-shaped rubber plate is hinged in the arc-shaped recess on the side wall of the circular rotating box. Under the action of centrifugal force, it overcomes the elastic force of the torsion spring and extends outward to fit the inner wall for circumferential scraping. At the same time, it works in conjunction with the rotating jet to achieve the synergistic effect of physical scraping and water flushing, effectively removing stubborn deposits. The pulse valve opens and closes periodically, causing pulsed pressure fluctuations in the solution entering the hollow tube. When the pressure in the hollow tube increases, the piston rod moves downward; when the pressure decreases, the piston rod moves upward. The piston rod can move up and down at high frequency, improving the cleaning effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the cuvette cleaning mechanism described in this invention; Figure 2 yes Figure 1 A schematic diagram of the fixed frame in the middle; Figure 3 yes Figure 2 Enlarged schematic diagram of the fixed frame in the middle; Figure 4 This is an enlarged schematic diagram of chamber two; Figure 5 This is a top-view cross-section of the cleaning end. Figure 1 ; Figure 6 This is a top-view cross-section of the cleaning end. Figure 2 ; Figure 7 yes Figure 6 Schematic diagram of the longitudinal section; In the diagram: 1. Box body; 2. Fixing frame; 3. Beam head; 4. Cleaning solution; 501. Container; 5. Acid and alkali resistant block one; 6. Acid and alkali resistant block two; 7. Sealed cavity; 8. Solenoid valve one; 9. Solenoid valve two; 10. Through hole; 11. Hollow tube; 12. Piston rod; 13. Cleaning end; 14. Piston pad; 15. Chamber one; 16. Chamber two; 17. Compression spring; 21. First bearing; 22. Circular rotating box; 23. Drain hole; 31. Arc-shaped recess; 32. Arc-shaped plate; 33. Torsion spring; 41. Limiting tube; 42. Moving rod; 43. Rubber plate; 52. Pulse valve; 53. Container bottle; 54. Connecting tube; 55. Liquid pump; 61. Heating wire; 71. Transparent cover plate; 81. Sliding sealing valve. Detailed Implementation

[0014] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] Please see Figure 1-7 The present invention provides a cuvette cleaning mechanism, including a housing 1, a fixing frame 2, a beam head 3, a cleaning solution 4, and a holding dish 501, and further comprising: An acid- and alkali-resistant block 5 is installed at the upper end of the fixed frame 2 and an acid- and alkali-resistant block 6 is installed at the lower end of the fixed frame 2. The two ends of the container 501 are fixedly connected to the acid- and alkali-resistant block 5 and the acid- and alkali-resistant block 6 respectively, and a sealed cavity 7 is formed inside the container 501. The acid and alkali resistant block 5 is equipped with a solenoid valve 8 to control the gas in and out of the sealed cavity 7 and to control the pressure in the sealed cavity 7; the acid and alkali resistant block 6 is equipped with a solenoid valve 9 to control the liquid to be tested in and out. The system includes a through hole 10, a hollow tube 11, a piston rod 12, and a cleaning end 13. The through hole 10 is located at the center of the acid and alkali resistant block 5. One end of the hollow tube 11 is sealed, and the other end is connected to the through hole 10. The piston rod 12 slides up and down in the through hole 10. A piston pad 14 is provided at the upper end of the piston rod 12. A first chamber 15 is formed between the piston pad 14 and the hollow tube 11, and a second chamber 16 is formed inside the piston rod 12. When the cleaning solution 4 enters the hollow tube 11, part of the cleaning solution 4 fills the first chamber 15, creating a positive pressure in the first chamber 15, which drives the piston pad 14 and piston rod 12 to move downwards; part of the cleaning solution 4 fills the second chamber 16 and is discharged from the cleaning end 13 to form a rinsing flow, rinsing the inner wall of the container 501; a compression spring 17 is provided between the piston rod 12 and the acid and alkali resistant block 5 for the piston rod 12 to reset.

[0016] In practical applications, during normal spectral detection, the liquid to be detected enters the container 501 through solenoid valve 29, and then solenoid valve 18 opens simultaneously. After the liquid is introduced, solenoid valve 18 and solenoid valve 29 close simultaneously, and spectral detection can be performed by working the beam head 3. In the initial state, the piston rod 12 is located at the top dead center of the through hole 10, the compression spring 17 is in a pre-compressed state, both solenoid valve 8 and solenoid valve 9 are closed, and the sealing cavity 7 is under normal pressure.

[0017] When the cleaning is started, solenoid valve 29 opens, and the liquid to be tested is discharged from the sealed chamber 7; then solenoid valve 18 opens, and external gas enters the sealed chamber 7 through acid and alkali resistant block 15, and the residual liquid in the container 501 is discharged through solenoid valve 29. High-pressure cleaning solution 4 enters the hollow tube 11 through an external pipeline, and the solution is split into two streams: As the liquid enters the chamber 15, a positive pressure is created because the volume of the chamber 15 is fixed and the liquid is incompressible. This pressure drives the piston pad 14 to move the piston rod 12 downward, compressing the spring 17 to store energy. At the same time, the cleaning end 13 at the lower end of the piston rod 12 extends into the container 501. Another solution flows through the internal chamber 16 of the piston rod 12 to the cleaning end 13, and is sprayed out at a certain angle from the nozzle or gap of the cleaning end 13 to form a flushing flow, which washes and cleans the inner wall of the container 501. When solenoid valve 29 is closed, the supply of cleaning solution 4 is stopped, the pressure in chamber 15 is relieved, the compression spring 17 releases its stored energy, pushes the piston rod 12 upward to reset, solenoid valve 18 opens to release pressure, and the sealed chamber 7 returns to normal pressure, completing one cleaning cycle. Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The cleaning end 13 includes a first bearing 21 installed at the lower end of the piston rod 12. A circular rotating box 22 is installed on the outside of the first bearing 21. The circular rotating box 22 is connected to the piston rod 12. The side wall of the circular rotating box 22 is provided with a drain hole 23. The axis of the drain hole 23 is inclined to the radius of the circular rotating box 22. A conical protrusion 24 is provided at the bottom of the circular rotating box 22.

[0018] In practical applications, the cleaning solution 4 flows into the inner cavity of the circular rotating box 22 through the inner chamber 16 of the piston rod 12. Because of the support of the first bearing 21, the circular rotating box 22 can rotate freely relative to the piston rod 12. Under pressure, the cleaning solution 4 is sprayed at high speed through the drain hole 23 on the side wall of the circular rotating box 22. Since the axis of the drain hole 23 is inclined at an angle to the radius of the circular rotating box 22, the jet generates a tangential reaction force, which drives the circular rotating box 22 to rotate continuously around the axis of the first bearing 21, forming a circumferential sweeping rotating jet that evenly rinses the inner wall of the container 501. Meanwhile, the conical protrusion 24 at the bottom of the circular rotating box 22 rotates with the box body, generating turbulence and guiding effect on the bottom area of ​​the container 501, improving the cleaning effect; after cleaning, the liquid supply stops, the circular rotating box 22 naturally decelerates and stops due to resistance, and the first bearing 21 maintains its rotational accuracy.

[0019] Example 1 of cleaning terminal 13, refer to Figures 1 to 5 The circular rotating box 22 has an arc-shaped recess 31 on its side wall. An arc-shaped plate 32 is hinged inside the arc-shaped recess 31. The arc-shaped plate 32 is made of rubber. A torsion spring 33 is installed between the arc-shaped plate 32 and the arc-shaped recess 31. The rotation of the circular rotating box 22 generates centrifugal force, which counteracts the elastic force of the torsion spring 33, causing one end of the arc-shaped plate 32 to contact the container 501.

[0020] In practical applications, the arc plate 32 hinged in the arc recess 31 on the side wall of the circular rotating box 22 rotates synchronously with the box body; the centrifugal force generated by the rotation acts on the arc plate 32, and the direction of the centrifugal force is radially outward, opposite to the direction of the elastic restoring force of the torsion spring 33. When the rotational speed reaches a certain value, the centrifugal force overcomes the preload of the torsion spring 33, forcing the arc plate 32 to deflect outward around its hinge point, causing the outer end of the rubber material of the arc plate 32 to gradually extend out of the arc-shaped recess 31 and contact the inner wall of the container 501; as the rotational speed increases, the contact pressure between the arc plate 32 and the inner wall increases, and the rubber material undergoes elastic deformation, adhering to the surface of the inner wall; During continuous rotation, the arc plate 32 scrapes and squeezes the inner wall in a circumferential manner to help remove the attached residue; at the same time, the torsion spring 33 stores elastic potential energy, and when the rotation speed decreases, the spring force causes the arc plate 32 to automatically retract into the arc-shaped recess 31 to avoid long-term contact with the inner wall of the container 501 and cause damage. The arc-shaped plate 32 works in conjunction with the rotating jet to achieve a combined cleaning of mechanical scraping and fluid flushing. After the cleaning is completed and the liquid supply stops, the circular rotating box 22 decelerates, the centrifugal force decreases, and the torsion spring 33 pushes the arc-shaped plate 32 back into the arc-shaped recess 31, completing the working cycle.

[0021] Example 2 of cleaning terminal 13, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 A limiting tube 41 is installed on the side wall of the circular rotating box 22. The limiting tube 41 forms an elevation angle with the horizontal plane. A moving rod 42 is provided inside the limiting tube 41. A rubber plate 43 is provided at one end of the moving rod 42. There is a limiting component between the limiting tube 41 and the moving rod 42. The centrifugal force of the rotation of the circular rotating box 22 drives the rubber plate 43 to adhere to the inner wall of the container 501.

[0022] In practical applications, when the circular rotating box 22 rotates, the moving rod 42 is subjected to centrifugal force in the limiting tube 41 and slides outward along the axis of the limiting tube 41. The limiting component restricts the maximum extension position of the moving rod 42 to prevent it from coming out. Because the limiting tube 41 is installed at an upward angle to the horizontal plane, the moving rod 42 extends in an oblique upward or downward direction, so that the rubber plate 43 at one end of the moving rod 42 contacts the inner wall of the container 501 at an inclined angle; as the rotation speed increases, the centrifugal force increases, the pressure of the rubber plate 43 against the inner wall increases, and the rubber material undergoes elastic deformation to adapt to the curved surface of the inner wall, thereby achieving scraping and cleaning. After the centrifugal force disappears, the moving rod 42 retracts along the inclined direction of the limiting tube 41 due to its own gravity, and the rubber plate 43 detaches from the inner wall. The limiting component ensures that the moving rod 42 returns to its initial position, completing the working cycle. The mechanical contact between the rotating jet and the rubber plate 43 works synergistically to enhance the cleaning effect.

[0023] Reference Figures 1 to 7 The fixed frame 2 has an opening 51, the upper end of the hollow tube 11 is equipped with a pulse valve 52, the lower end of the box 1 is equipped with a holding bottle 53, and a connecting pipe 54 is provided between the pulse valve 52 and the holding bottle 53. The side wall of the box 1 is equipped with a liquid pump 55, which drives the cleaning solution 4 to be pumped into the hollow tube 11. The liquid pump 55 can reverse the flow of liquid, and a negative pressure can be formed inside the circular rotating box 22, which is conducive to the automatic reset of the moving rod 42.

[0024] In practical applications, the liquid pump 55 starts in the forward direction, transporting the cleaning solution 4 from the container 53 through the connecting pipe 54 to the pulse valve 52 at the upper end of the hollow tube 11. The pulse valve 52 opens and closes periodically, causing the solution entering the hollow tube 11 to form pulsed pressure fluctuations. When the pressure in the hollow tube 11 increases, the piston rod 12 moves downward, and when the pressure decreases, the piston rod 12 moves upward. The piston rod 12 can move up and down at high frequency, improving the cleaning effect. After cleaning, the liquid pump 55 can be reversed to draw the residual solution in the hollow tube 11 and the circular rotating box 22 back to the holding bottle 53 through the connecting pipe 54 and the pulse valve 52, so that a negative pressure is formed inside the circular rotating box 22. This negative pressure is transmitted to the rear end of the moving rod 42 through the limiting pipe 41, which helps the moving rod 42 overcome frictional resistance and residual centrifugal force, and quickly retract and reset under the constraint of the limiting component.

[0025] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The outer wall of the container 501 is provided with a heating wire 61.

[0026] In practical applications, the temperature of the liquid to be tested can be raised by setting the heating wire 61.

[0027] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The side wall of the fixed frame 2 is provided with a transparent cover plate 71.

[0028] In practical applications, the transparent cover 71 facilitates manual observation of the usage status of the container 501.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A sliding sealing valve 81 is provided at the lower end of the through hole 10.

[0030] In practical applications, the sealing performance between the through hole 10 and the piston rod 12 can be increased by setting the sliding sealing valve 81.

Claims

1. A cuvette cleaning mechanism, comprising a housing (1), a fixing frame (2), a beam head (3), a cleaning solution (4), and a holding dish (501), characterized in that, Also includes: An acid- and alkali-resistant block 1 (5) is placed at the upper end of the fixed frame (2) and an acid- and alkali-resistant block 2 (6) is placed at the lower end of the fixed frame (2). The two ends of the container (501) are fixedly connected to the acid- and alkali-resistant block 1 (5) and the acid- and alkali-resistant block 2 (6) respectively, and a sealed cavity (7) is formed inside the container (501). The first anti-acid and alkali block (5) is equipped with a solenoid valve (8) to control the gas in and out of the sealed cavity (7) and control the pressure in the sealed cavity (7); the second anti-acid and alkali block (6) is equipped with a solenoid valve (9) to control the liquid to be tested in and out. The components include a through hole (10), a hollow tube (11), a piston rod (12), and a cleaning end (13). The through hole (10) is located at the center of the acid and alkali resistant block 1 (5). One end of the hollow tube (11) is sealed, and the other end is connected to the through hole (10). The piston rod (12) slides up and down in the through hole (10). A piston pad (14) is provided at the upper end of the piston rod (12). A first chamber (15) is formed between the piston pad (14) and the hollow tube (11), and a second chamber (16) is formed inside the piston rod (12). When the cleaning solution (4) enters the hollow tube (11), part of the cleaning solution (4) fills the first chamber (15), and a positive pressure is formed in the first chamber (15), which drives the piston pad (14) and piston rod (12) to move downward; part of the cleaning solution (4) fills the second chamber (16), and is discharged from the cleaning end (13) to form a flushing flow, which rinses the inner wall of the container (501); A compression spring (17) is provided between the piston rod (12) and the acid and alkali block (5) for the piston rod (12) to reset.

2. The cuvette cleaning mechanism according to claim 1, characterized in that, The cleaning end (13) includes a first bearing (21) installed at the lower end of the piston rod (12). A circular rotating box (22) is installed on the outside of the first bearing (21). The circular rotating box (22) is connected to the piston rod (12). The side wall of the circular rotating box (22) is provided with a drain hole (23). The axis of the drain hole (23) is inclined to the radius of the circular rotating box (22). The bottom of the circular rotating box (22) is provided with a conical protrusion (24).

3. The cuvette cleaning mechanism according to claim 2, characterized in that, The side wall of the circular rotating box (22) is provided with an arc-shaped recess (31), and an arc-shaped plate (32) is hinged in the arc-shaped recess (31). The arc-shaped plate (32) is made of rubber material, and a torsion spring (33) is installed between the arc-shaped plate (32) and the arc-shaped recess (31). The circular rotating box (22) rotates and generates centrifugal force, which counteracts the elastic force of the torsion spring (33), so that one end of the arc-shaped plate (32) contacts the container (501).

4. The cuvette cleaning mechanism according to claim 2, characterized in that, A limiting tube (41) is installed on the side wall of the circular rotating box (22). The limiting tube (41) forms an elevation angle with the horizontal plane. A moving rod (42) is provided inside the limiting tube (41). A rubber plate (43) is provided at one end of the moving rod (42). There is a limiting component between the limiting tube (41) and the moving rod (42). The centrifugal force of the rotating circular box (22) drives the rubber plate (43) to adhere to the inner wall of the container (501).

5. The cuvette cleaning mechanism according to claim 3 or 4, characterized in that, An opening (51) is provided on the fixed frame (2), a pulse valve (52) is provided at the upper end of the hollow tube (11), a container bottle (53) is provided at the lower end of the box (1), a connecting pipe (54) is provided between the pulse valve (52) and the container bottle (53), a liquid pump (55) is provided on the side wall of the box (1), the liquid pump (55) drives the cleaning solution (4) to pump into the hollow tube (11); the liquid pump (55) can reverse the liquid, and a negative pressure can be formed in the circular rotating box (22), which is conducive to the automatic reset of the moving rod (42).

6. The cuvette cleaning mechanism according to claim 5, characterized in that, The outer wall of the serving dish (501) is provided with a heating wire (61).

7. The cuvette cleaning mechanism according to claim 6, characterized in that, The side wall of the fixed frame (2) is provided with a transparent cover plate (71).

8. The cuvette cleaning mechanism according to claim 7, characterized in that, A sliding sealing valve (81) is provided at the lower end of the through hole (10).

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