Cleaning device for chemical analysis instrument

Abstract

The utility model relates to chemical equipment cleaning technical field, concretely is cleaning device for chemical analysis instrument. Including the cleaning box, the inside of cleaning box is provided with round table, and the upper surface of round table is opened to have the accommodation cavity, and the inboard fixed mounting of accommodation cavity has the second net board, and the upper surface symmetrical fixed mounting of round table has the fixed base, and the upper surface of each fixed base all fixed mounting has the tension spring, and the upper end of two tension springs is commonly fixed with the operating lever of fixed base penetration, and the lower end fixed connection of operating lever has the first net board of accommodation cavity sliding connection. The device is placed in the accommodation cavity inside that the round table has opened through the instrument, and is placed on the upper surface of second net board, and simultaneously utilizes the elastic tension of tension spring, solves the technical problem of the cleaning device for chemical analysis instrument in prior art in use, and easy to damage the instrument, and easy to cause the technical problem of property loss.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment cleaning technology, specifically a cleaning device for chemical analysis instruments. Background Technology

[0002] Chemical analysis, as a key link in the chemical production process, uses chemical analysis (including qualitative and quantitative analysis) and instrumental analysis methods, relying on various chemical analysis instruments such as beakers, graduated cylinders, measuring cups, flasks, and volumetric flasks, to accurately detect the quality standards and chemical composition of industrial and chemical products. The test results directly determine product quality control and production safety early warning, and are the core support for ensuring compliance and product stability in chemical production.

[0003] After chemical analysis is completed, chemical reagents (such as acid and alkali solutions, organic solvents, metal ion reagents, etc.), reaction byproducts, and solid particulate impurities may remain on the inner walls of the instrument. If cleaning is not thorough, these residues can cross-react with subsequent samples, leading to data deviations and affecting the accuracy of analytical results. Furthermore, some corrosive residual reagents (such as strong acids and alkalis) can adhere to the instrument's inner walls over time, causing corrosion and aging of the glass instruments, shortening their lifespan, and increasing replacement costs. Therefore, efficient, thorough, and non-destructive cleaning of chemical analysis instruments is an indispensable subsequent step in the chemical analysis process.

[0004] Currently, existing cleaning devices for chemical analysis instruments are mainly divided into two categories: manual cleaning auxiliary devices and semi-automatic cleaning equipment. Manual cleaning auxiliary devices require manual operation of the cleaning brush or nozzle, resulting in low cleaning efficiency and easy damage to the instrument due to uneven manual operation. Although semi-automatic cleaning equipment can achieve automatic water spraying, it generally suffers from problems such as missing or poorly designed instrument fixing structures: some devices rely solely on placement tanks for simple instrument restraint, and the impact of water flow during cleaning can easily cause the instrument to shift or tip over, especially for irregularly shaped instruments (such as pear-shaped flasks) or large-capacity instruments (such as 5000mL volumetric flasks), where the stability is even worse; other devices use rigid clamps to fix the instrument, which can improve stability, but the hard contact between the clamps and the instrument surface can easily cause scratches and cracks in glass instruments, leading to instrument damage and property loss, which is difficult to meet the actual needs of the chemical analysis field for "efficient, thorough, and non-destructive" instrument cleaning. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a cleaning device for chemical analysis instruments. By placing the instrument inside the receiving cavity of the frustum and on the upper surface of the second mesh plate, and using the elastic tension of the tension spring, the operating rod connected to it drives the first mesh plate to be pressed and fixed on the top of the instrument, thereby achieving the effect of easy fixation of the instrument. This solves the technical problem that the existing cleaning devices for chemical analysis instruments lack a structure for easy fixation of the instrument during use, which leads to easy damage to the instrument during cleaning and easy property loss.

[0006] This utility model is achieved using the following technical solution: The cleaning device for chemical analysis instruments includes a cleaning tank. The cleaning tank has a frustum inside, and the upper surface of the frustum has a receiving cavity. A second mesh plate is fixedly installed inside the receiving cavity. Fixed seats are symmetrically fixedly installed on the upper surface of the frustum. A tension spring is fixedly installed on the upper surface of each fixed seat. The upper ends of the two tension springs are fixedly connected to an operating rod that passes through the fixed seat. The lower end of the operating rod is fixedly connected to a first mesh plate that is slidably connected to the receiving cavity.

[0007] Furthermore, a drain pipe is fixedly connected to the front surface of the cleaning tank, and a control valve is installed on the drain pipe.

[0008] Furthermore, the bottom of the inner cavity of the cleaning tank is symmetrically and fixedly equipped with electric telescopic rods, and the output end of each electric telescopic rod is fixedly connected to a movable plate, which is fixedly connected to the frustum.

[0009] Furthermore, the tension spring is located on the outside of the operating lever, and the operating lever has a U-shaped structure.

[0010] In a further configuration, a crossbar is fixedly installed on the upper surface of the cleaning tank, and a top plate is sleeved on the outer side of the crossbar, with the bottom of the top plate in contact with the cleaning tank.

[0011] Furthermore, a water inlet pipe is inserted into the interior of the top plate, and a high-pressure nozzle is fixedly connected to the lower end of the water inlet pipe. A water pump connected to the top plate is installed on the water inlet pipe.

[0012] In a further configuration, a motor is fixedly installed on the upper surface of the cleaning tank, and the output shaft of the motor is fixedly connected to a lead screw that is screwed to the top plate.

[0013] An elastic buffer assembly is provided on the lower surface of the first mesh plate. The elastic buffer assembly is a silicone elastic buffer pad with a thickness of 3-5mm, which is fixedly connected to the first mesh plate by high-strength adhesive. At the same time, three sets of adjustable rubber blocks are evenly arranged along the circumferential direction on the inner wall of the receiving cavity. The rubber blocks are made of nitrile rubber with a Shore hardness of 50-60. The bottom of the blocks is fixed to the inner wall of the receiving cavity by threaded connection. The adjustment range is 0-20mm, and the blocks can be extended or retracted by rotating them.

[0014] The elastic buffer pad increases the contact friction between the first mesh plate and the top of the instrument, preventing longitudinal sliding of the instrument due to water flow impact during cleaning. The adjustable rubber stop restricts the radial displacement of the instrument in the lateral direction, adapting to chemical analysis instruments (such as beakers, graduated cylinders, and flasks) of different diameters (50-200mm). The longitudinal tension provided by the tension spring (calculated to be 10-15N when the tension is 20-30mm) works in conjunction with the lateral limiting force of the rubber stop to form a dual fixing mechanism of "longitudinal constraint + lateral limiting," ensuring that the instrument remains stable throughout the cleaning process and preventing displacement or tipping.

[0015] The effective stroke of the lead screw is consistent with the internal width of the cleaning box, which is set to 500-600mm. The effective stroke of the lead screw is set to 500-600mm, and the lead of the lead screw is 10mm. The motor is a stepper motor, and the speed is adjusted by the motor controller to achieve adjustable high-pressure nozzle movement speed (adjustment range 5-10mm / s), ensuring that the nozzle can cover the entire area of ​​the upper surface of the instrument.

[0016] A rotary joint is added between the water inlet pipe and the high-pressure nozzle. The rotary joint can achieve continuous rotation from 0 to 360° with a rotation torque ≤ 0.5N. m, pressure rating ≥1.0MPa. The high-pressure nozzle has a spray angle of 60-90° and a spray pressure adjustment range of 0.3-0.5MPa. Combined with the rotation of the rotary joint and the left and right movement of the screw drive, a composite cleaning path of "left and right translation + 360° rotation spray" is formed. The water flow can cover the outer surface of the instrument and the inside of the cavity, avoiding cleaning dead corners.

[0017] When the motor drives the lead screw to rotate, the lead screw nut (fixedly connected to the top plate 4) converts the rotational motion into linear motion, causing the top plate to move smoothly along the crossbar, ensuring that the high-pressure nozzles uniformly cover the upper surface of the instrument. The rotary joint rotates automatically under the action of water pressure (rotation speed is 10-15 r / min when water flow speed ≥ 1.5 m / s), causing the high-pressure water flow to form a conical coverage area, creating dynamic contact with the instrument surface, enhancing the flushing force of the water flow on the contaminants on the instrument surface, and improving the cleaning effect. At the same time, the electric telescopic rod drives the circular platform to achieve a lifting and lowering of 0-300 mm, allowing the instrument to alternate between "immersion + spraying" states. Immersion can soften stubborn contaminants, and spraying can wash away loose contaminants, further improving the thoroughness of cleaning.

[0018] The elastic buffer assembly on the lower surface of the first mesh plate is made of a porous elastic material, such as porous silicone or microporous rubber, with a porosity of 40%-60%, allowing high-pressure water flow to penetrate and clean the area in contact with the instrument. The second mesh plate and the adjustable rubber baffles on the inner wall of the receiving cavity also adopt a porous structure or are designed with microporous channels to ensure that water flow covers the instrument surface from the sides and bottom, avoiding cleaning dead corners.

[0019] By moving the high-pressure nozzle left and right and rotating 360°, combined with the lifting and lowering motion of the truncated cone, the water flow forms a dynamic coverage network that can penetrate porous materials at fixed points and clean all surfaces of the instrument. Furthermore, during the cleaning cycle, the operating lever can be briefly pulled up to raise the first mesh plate, allowing the water flow to directly rinse the top contact area of ​​the instrument, further enhancing the cleaning effect.

[0020] Compared with the prior art, the beneficial effects of this utility model are: (1) By placing the instrument inside the cavity opened in the truncated cone and on the upper surface of the second mesh plate, and by using the elastic tension of the tension spring, the operating rod connected to it can drive the first mesh plate to be pressed and fixed on the top of the instrument, thereby achieving the effect of easy fixation of the instrument. This solves the technical problem that the cleaning device for chemical analysis instruments in the prior art lacks a structure that is convenient for fixing the instrument, which leads to easy damage to the instrument during cleaning and easy property loss.

[0021] (2) By adjusting the extension and retraction of the electric telescopic rod, the movable plate connected to its output end drives the truncated cone to rise and fall, thereby rinsing the instrument. At the same time, the water pump is started, so that the water is sprayed out from the high-pressure nozzle through the water inlet pipe, thereby rinsing the instrument. In addition, by starting the motor, the screw connected to its output shaft is rotated, thereby controlling the top plate on the outside to move the high-pressure nozzle left and right, so as to continuously change the position of rinsing the instrument, making the cleaning thorough and efficient. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the cleaning device for chemical analysis instruments according to this utility model; Figure 2 This is a three-dimensional structural diagram of the connection between the first mesh plate and the frustum of the present invention; Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the connection between the second mesh plate and the frustum of the present invention; In the diagram: 1. Sewage pipe; 2. Cleaning tank; 3. Crossbar; 4. Top plate; 5. High-pressure nozzle; 6. Water inlet pipe; 7. Lead screw; 8. Motor; 9. Frustum; 10. First mesh plate; 11. Water pump; 12. Operating lever; 13. Receiving cavity; 14. Electric telescopic rod; 15. Fixed base; 16. Movable plate; 17. Tension spring; 18. Second mesh plate. Detailed Implementation

[0023] To make the objectives and technical solutions of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Example 1 like Figure 1-4 As shown, a cleaning device for chemical analysis instruments includes a cleaning tank 2. Inside the cleaning tank 2, there is a frustum 9. The upper surface of the frustum 9 has a receiving cavity 13. A second mesh plate 18 is fixedly installed inside the receiving cavity 13. Fixing seats 15 are symmetrically fixedly installed on the upper surface of the frustum 9. A tension spring 17 is fixedly installed on the upper surface of each fixing seat 15. The upper ends of the two tension springs 17 are fixedly connected to an operating rod 12 that passes through the fixing seat 15. The lower end of the operating rod 12 is fixedly connected to a first mesh plate 10 that is slidably connected to the receiving cavity 13.

[0025] In practice, by placing the instrument inside the receiving cavity 13 of the frustum 9 and on the upper surface of the second mesh plate 18, and by using the elastic tension of the tension spring 17, the operating rod 12 connected to it drives the first mesh plate 10 to be pressed and fixed on the top of the instrument, thus achieving the effect of easy instrument fixation. This solves the technical problem in the prior art that the cleaning device for chemical analysis instruments lacks a structure for easy instrument fixation, which leads to easy damage to the instrument during cleaning and easy property loss.

[0026] like Figure 1 As shown, a drain pipe 1 is fixedly connected to the front surface of the cleaning tank 2, and a control valve is installed on the drain pipe 1.

[0027] Example 2 like Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: Electric telescopic rods 14 are symmetrically fixedly installed at the bottom of the inner cavity of the cleaning tank 2. Each electric telescopic rod 14 has a movable plate 16 fixedly connected to its output end. The movable plate 16 is fixedly connected to the frustum 9. A tension spring 17 is located outside the operating rod 12, which has a U-shaped structure. A crossbar 3 is fixedly installed on the upper surface of the cleaning tank 2. A top plate 4 is sleeved on the outer side of the crossbar 3. The bottom of the top plate 4 contacts the cleaning tank 2. A water inlet pipe 6 is inserted into the inside of the top plate 4. A high-pressure nozzle 5 is fixedly connected to the lower end of the water inlet pipe 6. A water pump 11 connected to the top plate 4 is installed on the water inlet pipe 6. A motor 8 is fixedly installed on the upper surface of the cleaning tank 2. A lead screw 7 screwed to the top plate 4 is fixedly connected to the output shaft of the motor 8.

[0028] In practice, by adjusting the extension and retraction of the electric telescopic rod 14, the movable plate 16 connected to its output end drives the truncated cone 9 to rise and fall, thereby rinsing the instrument. At the same time, the water pump 11 is started, so that water is sprayed out from the high-pressure nozzle 5 through the water inlet pipe 6, thereby rinsing the instrument. In addition, by starting the motor 8, the lead screw 7 connected to its output shaft is driven to rotate, thereby controlling the outer top plate 4 to move the high-pressure nozzle 5 left and right, so as to continuously change the position of rinsing the instrument, resulting in thorough cleaning and high efficiency.

[0029] In this technical solution, the top plate 4 is initially positioned at the far left or far right, and the truncated cone 9 is positioned at the top. During use, first pull up the operating lever 12 to stretch the tension spring 17, raising the first mesh plate 10 to a certain height and detaching it from the receiving cavity 13. Then, place the instrument inside the receiving cavity 13, onto the second mesh plate 18. Afterward, release the operating lever 12. At this point, under the elastic tension of the tension spring 17, the first mesh plate 10 presses the instrument firmly. Finally, start the motor 8, water pump 11, and electric telescopic rod 14. The motor 8 drives the lead screw 7 connected to its output shaft to rotate, causing the outer top plate 4 to move the high-pressure nozzle 5 left and right. Simultaneously, the water pump 11 sprays water through the inlet pipe 6 from the high-pressure nozzle 5 to rinse the instrument. The electric telescopic rod 14 also drives the movable plate 16 connected to its output end to raise and lower the truncated cone 9, continuously rinsing the instrument.

[0030] In addition, during the cleaning operation, first adjust the rubber baffle on the inner wall of the receiving cavity 13 according to the diameter of the instrument, so that the baffle extends to contact the outer wall of the instrument (leaving a gap of 1-2mm to avoid squeezing and damaging the instrument); pull up the operating rod 12, the tension spring 17 is stretched (the stretch is controlled at 20-30mm), place the instrument on the second mesh plate 18 in the receiving cavity 13, release the operating rod 12, the first mesh plate 10 presses the top of the instrument under the spring tension, and the elastic buffer pad is in contact with the surface of the instrument; start the water pump 11, adjust the pressure of the high-pressure nozzle 5 to 0.3-0.5MPa, start the motor 8 to move the top plate 4 left and right at a speed of 5-10mm / s, and at the same time rotate the joint to drive the nozzle to rotate; start the electric telescopic rod 14 to control the circular platform 9 to rise and fall at a speed of 5-8mm / s, realizing the alternating immersion and spraying of the instrument. Throughout the process, the double fixing structure ensures the stability of the instrument, and the composite cleaning path ensures that the water flow covers the entire area, achieving the purpose of efficient and non-damaging cleaning.

[0031] During cleaning, first adjust the rubber stop according to the instrument's diameter, ensuring a 1-2mm gap between the stop and the instrument's outer wall to prevent damage from compression. Pull up the operating lever 12 to stretch the tension spring 17 (20-30mm), placing the instrument on the second mesh plate 18 within the receiving cavity 13. Release the operating lever 12 to press the first mesh plate 10 firmly against the top of the instrument. Start the water pump 11, motor 8, and electric telescopic rod 14. The high-pressure nozzle 5 sprays at 0.3-0.5MPa pressure, the top plate 4 moves left and right at a speed of 5-10mm / s, the rotary joint drives the nozzle to rotate 360°, and simultaneously the circular platform 9 rises and falls at a speed of 5-8mm / s, achieving alternating soaking and spraying cleaning. To thoroughly clean the fixed contact area, manually pull up the operating lever 12 for 2-3 seconds during the middle of the cleaning process to temporarily raise the first mesh plate 10, allowing the high-pressure water flow to directly rinse the top of the instrument. Then release the operating lever 12 and re-fix it. Throughout the process, the porous buffer pad and mesh plate allow water flow to penetrate, ensuring thorough cleaning without dead angles.

Claims

1. A cleaning device for chemical analysis instruments, characterized in that, The system includes a cleaning tank (2), inside which is a frustum (9). The upper surface of the frustum (9) is provided with a receiving cavity (13). A second mesh plate (18) is fixedly installed on the inner side of the receiving cavity (13). Fixing seats (15) are symmetrically fixedly installed on the upper surface of the frustum (9). A tension spring (17) is fixedly installed on the upper surface of each fixing seat (15). The upper ends of the two tension springs (17) are fixedly connected to an operating rod (12) that passes through the fixing seat (15). The lower end of the operating rod (12) is fixedly connected to a first mesh plate (10) that is slidably connected to the receiving cavity (13).

2. The cleaning device for chemical analysis instruments according to claim 1, characterized in that, The front surface of the cleaning tank (2) is fixedly connected to a drain pipe (1), and a control valve is installed on the drain pipe (1).

3. The cleaning device for chemical analysis instruments according to claim 1, characterized in that, The bottom of the inner cavity of the cleaning tank (2) is symmetrically fixedly equipped with electric telescopic rods (14), and each of the electric telescopic rods (14) is fixedly connected to a movable plate (16) at its output end. The movable plate (16) is fixedly connected to the frustum (9).

4. The cleaning device for chemical analysis instruments according to claim 1, characterized in that, The tension spring (17) is located on the outside of the operating lever (12), which has a U-shaped structure.

5. The cleaning device for chemical analysis instruments according to claim 1, characterized in that, A crossbar (3) is fixedly installed on the upper surface of the cleaning tank (2), and a top plate (4) is sleeved on the outside of the crossbar (3). The bottom of the top plate (4) is in contact with the cleaning tank (2).

6. The cleaning device for chemical analysis instruments according to claim 5, characterized in that, The top plate (4) is internally connected to a water inlet pipe (6), and a high-pressure nozzle (5) is fixedly connected to the lower end of the water inlet pipe (6). A water pump (11) connected to the top plate (4) is installed on the water inlet pipe (6).

7. The cleaning device for chemical analysis instruments according to claim 5, characterized in that, A motor (8) is fixedly installed on the upper surface of the cleaning tank (2), and the output shaft of the motor (8) is fixedly connected to a lead screw (7) that is screwed to the top plate (4).

Images