Sample cell cleaning mechanism

Abstract

The application relates to the technical field of optical detection equipment cleaning, in particular to a sample cell cleaning mechanism. The sample cell cleaning mechanism comprises a pipe, a main body and a cleaning assembly. The main body is sleeved on the pipe, the main body is provided with an optical path channel, the optical path channel penetrates the pipe and is used for guiding an optical path to pass through the pipe, and the cleaning end of the cleaning assembly is embedded in the pipe. The cleaning end of the cleaning assembly can reciprocate in the pipe along the axial direction of the pipe to clean the inner wall of the pipe. The sample cell cleaning mechanism cleans the inner wall of the pipe through the cleaning assembly, does not need to be disassembled, does not need to inject high-pressure liquid into the pipe for flushing, is simple and quick to operate, is favorable for improving the cleaning efficiency, and is favorable for maintaining the sealing performance of the sample cell cleaning mechanism.

Description

Technical Field

[0001] This application relates to the field of cleaning technology for optical inspection equipment, and in particular to a sample cell cleaning mechanism. Background Technology

[0002] With the development of optical inspection technology, operators have higher requirements for the cleaning efficiency of tubing used in optical inspection. In optical inspection equipment, the sample cell cleaning mechanism contains a glass tube. As the core carrier for light transmission, the surface cleanliness of this glass tube directly determines the accuracy of the test results and the stability of the equipment. Neglecting cleaning can not only lead to data distortion but also accelerate equipment wear and tear. Therefore, cleaning is a crucial step in ensuring the reliability of the inspection.

[0003] In related technologies, two methods are commonly used to clean the inner wall of pipe fittings. One method is to disassemble the pipe fittings for cleaning, but this method is complicated and inefficient. The other method is to inject high-pressure liquid through a high-pressure nozzle for cleaning, but this cleaning method has high pressure and can easily damage the sealing of the pipe fittings, resulting in a risk of sealing problems for the sample pool cleaning mechanism. Utility Model Content

[0004] Therefore, it is necessary to provide a sample cell cleaning mechanism to address the problems of complex operation, low efficiency, and impact on sealing during the cleaning process.

[0005] A sample cell cleaning mechanism, comprising:

[0006] Pipe fittings;

[0007] The main body is fitted onto the pipe fitting, and the main body is provided with an optical path channel that penetrates the pipe fitting to guide the optical path through the pipe fitting;

[0008] A cleaning component, wherein the cleaning end of the cleaning component is disposed in the pipe fitting, and the cleaning end of the cleaning component is capable of reciprocating along the axial direction of the pipe fitting to clean the inner wall of the pipe fitting.

[0009] This sample cell cleaning mechanism cleans the inner wall of the tubing using cleaning components without disassembling it or injecting high-pressure liquid into the tubing for rinsing. It is simple and quick to operate, which helps improve cleaning efficiency and maintains the sealing of the sample cell cleaning mechanism.

[0010] In one embodiment, the cleaning component includes:

[0011] Drive components;

[0012] A drive rod is connected to the output end of the drive component, and the drive rod extends along the axial direction of the tube.

[0013] Piston, mounted on the drive rod; and

[0014] A cleaning element is fitted onto the piston, and the driving element is configured to drive the piston to reciprocate along the axial direction of the pipe to clean the inner wall of the pipe.

[0015] This cleaning assembly uses the output end of a drive unit to reciprocate linearly along the axial direction of the pipe, thereby driving a drive rod to reciprocate linearly along its axial direction. This, in turn, causes a piston to reciprocate axially within the pipe. During the piston's movement, the cleaning component rubs against the inner wall of the pipe, facilitating cleaning. This cleaning assembly has a simple structure and is easy to implement.

[0016] In one embodiment, the piston divides the tube into a first chamber and a second chamber, and the piston has a through hole that extends axially along the tube and is configured to balance the pressure in the first chamber and the second chamber when the piston moves.

[0017] This means that the liquid or gas in the pipe flows back and forth between the first and second chambers through the through hole, which avoids excessive pressure in the first or second chamber caused by the reciprocating motion of the piston, thus increasing the resistance to piston movement. At the same time, it reduces the impact of piston movement on the sealing performance of the pipe, which helps to maintain the sealing effect of the pipe.

[0018] In one embodiment, the piston has a groove on its outer periphery, the groove having a U-shaped cross-section, and the cleaning component is disposed in the groove.

[0019] The piston structure uses the sidewall of the groove to limit the movement of the cleaning component along the pipe axis, preventing the cleaning component from falling off the piston during cleaning by friction with the inner wall of the pipe. This helps to improve the structural stability and cleaning effect stability of the cleaning assembly.

[0020] In one embodiment, the machining texture on the surface of the drive rod extends along the axial direction of the drive rod.

[0021] This helps reduce friction between the machining texture and the seal during the reciprocating motion of the drive rod, and avoids leakage between the seal and the drive rod caused by cross-texture.

[0022] In one embodiment, it further includes:

[0023] A first end cap, connected to the main body and abutting against one end of the tubing, is provided with a liquid inlet configured to inject liquid into the tubing; and

[0024] The second end cap is connected to the main body and abuts against the other end of the pipe. The second end cap is provided with a connecting cavity and a drain port. The connecting cavity is connected to the pipe and the drain port. The drain port is configured to discharge the liquid inside the pipe.

[0025] The first and second end caps are used to inject and drain liquid into the tubing, so that the sample can be tested using the sample cell cleaning mechanism.

[0026] In one embodiment, it further includes:

[0027] A sealing element is connected to the second end cap, and the sealing element is located at the end of the communicating cavity away from the pipe. The cleaning end of the cleaning assembly passes through the sealing element and is disposed inside the pipe.

[0028] The seal and the first end cap together seal both ends of the pipe fitting, thereby ensuring the internal sealing of the pipe fitting.

[0029] In one embodiment, the end face of the seal near the pipe is coplanar with the side of the drain port away from the pipe, so that the drain port can completely drain the internal liquid and reduce the liquid flow retention area in the connecting cavity.

[0030] In one embodiment, the end of the communicating cavity away from the pipe is provided with a step, and the end of the sealing member near the pipe is provided with a boss. The outer diameter of the step and the corresponding hole diameter of the boss are transitionally fitted, which helps to ensure the coaxiality of the sealing member and the pipe and improves the stability of the reciprocating motion of the drive rod.

[0031] In one embodiment, it further includes:

[0032] A pressure block is fitted onto the sealing element and abuts against the end face of the sealing element. The pressure block is connected to the second end cap.

[0033] Pressure blocks are used to secure the seals, thereby improving structural stability. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the sample cell cleaning mechanism provided in one embodiment of this application.

[0035] Figure 2 This is a cross-sectional structural diagram of the sample cell cleaning mechanism provided in one embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the cleaning end structure of a cleaning component provided in one embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100 - Fitting; 110 - First cavity; 120 - Second cavity;

[0039] 200 - Main body; 210 - Optical path channel;

[0040] 300 - Cleaning component; 310 - Drive element; 320 - Drive rod; 330 - Piston; 331 - Through hole; 332 - Groove; 340 - Cleaning component;

[0041] 400 - First end cap; 410 - Liquid inlet;

[0042] 500 - Second end cap; 510 - Communicating cavity; 520 - Drain port; 530 - Step;

[0043] 600 - Seal; 610 - Boss;

[0044] 700 - Pressing block. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] See Figures 1 to 2 , Figure 1 A schematic diagram of the sample cell cleaning mechanism provided in one embodiment of this application is shown. Figure 2 A cross-sectional structural schematic diagram of a sample cell cleaning mechanism provided in one embodiment of this application is shown.

[0052] like Figure 1 and Figure 2As shown, the sample cell cleaning mechanism includes a tube 100, a main body 200, and a cleaning component 300. The main body 200 is fitted onto the tube 100 and has an optical path channel 210 that penetrates the tube 100 to guide light through it. The cleaning end of the cleaning component 300 is located within the tube 100 and can reciprocate along the axial direction of the tube 100 to clean the inner wall of the tube 100. This sample cell cleaning mechanism cleans the inner wall of the tube 100 through the cleaning end of the cleaning component 300 without removing it or injecting high-pressure liquid into the tube 100 for rinsing. This simple and quick operation improves cleaning efficiency and helps maintain the sealing of the sample cell cleaning mechanism.

[0053] Specifically, the tube 100 is a glass cylindrical tube 100. The tube 100 is used to place the sample, forming a sample cell to facilitate optical detection.

[0054] like Figures 1 to 3 As shown, in one embodiment, the cleaning assembly 300 includes a drive member 310, a drive rod 320, a piston 330, and a cleaning member 340. The drive rod 320 is connected to the output end of the drive member 310 and extends axially along the pipe 100. The piston 330 is disposed on the drive rod 320, and the cleaning member 340 is sleeved on the piston 330. The drive member 310 is configured to drive the piston 330 to reciprocate axially along the pipe 100, thereby cleaning the inner wall of the pipe 100 with the cleaning member 340. The cleaning assembly 300 drives the drive rod 320 to reciprocate axially along the pipe 100 via the reciprocating linear motion of the output end of the drive member 310, which in turn drives the piston 330 to reciprocate axially within the pipe 100. During the movement of the piston 330, the cleaning member 340 contacts and rubs against the inner wall of the pipe 100, thus cleaning the inner wall of the pipe 100. The cleaning component 300 has a simple structure and is easy to implement. The cleaning element 340 constitutes the aforementioned cleaning end.

[0055] For example, the drive component 310 is a linear cylinder. Linear cylinders have a simple structure, low cost, and are easy to automate, which is beneficial for achieving automatic cleaning of the sample cell cleaning mechanism. The drive rod 320 and the drive component 310 can be connected by threads, which facilitates assembly and disassembly.

[0056] For example, the cleaning component 340 is a ring-shaped rubber ring. The rubber ring is soft and elastic, allowing it to closely adhere to the glass surface when wiping the glass tube 100, effectively removing stains while minimizing scratches. Furthermore, the rubber surface is typically smooth, preventing lint or fiber residue, thus avoiding secondary contamination within the tube 100 after cleaning and improving cleaning efficiency. In addition, the rubber ring has good wear resistance and corrosion resistance, a long service life, and can be reused, reducing cleaning costs.

[0057] Optionally, after the cleaning component 340 is fitted onto the piston 330, the outer diameter of the two components together is 1 mm smaller than the inner diameter of the tube 100. This allows the cleaning component 340 to contact the inner wall of the tube 100 and perform a cleaning function, while avoiding excessive pressure between the cleaning component 340 and the inner wall of the tube 100, which could cause physical damage to the tube 100, such as scratches, deformation, or coating damage. This helps to ensure the optical uniformity and structural stability of the inner wall of the tube 100.

[0058] like Figure 2 As shown, piston 330 divides pipe fitting 100 into a first chamber 110 and a second chamber 120. Piston 330 is provided with a through hole 331, which extends along the axial direction of pipe fitting 100. The through hole 331 is used to balance the pressure in the first chamber 110 and the second chamber 120 when piston 330 moves. That is, liquid or gas in pipe fitting 100 flows back and forth between the first chamber 110 and the second chamber 120 through through hole 331, avoiding excessive pressure in the first chamber 110 or the second chamber 120 due to the reciprocating motion of piston 330, which would increase the resistance to piston 330's movement. At the same time, it reduces the impact of piston 330's movement on the sealing performance of pipe fitting 100, which is beneficial to maintaining the sealing effect of pipe fitting 100.

[0059] like Figure 2 and Figure 3 As shown, a groove 332 is provided on the outer periphery of the piston 330. The cross-sectional shape of the groove 332 is U-shaped, and the cleaning component 340 is disposed in the groove 332. This piston 330 structure uses the side wall of the groove 332 to limit the movement of the cleaning component 340 along the axial direction of the pipe 100, preventing the cleaning component 340 from falling off the piston 330 during cleaning by friction with the inner wall of the pipe 100. This helps to improve the structural stability and cleaning effect stability of the cleaning assembly 300.

[0060] More specifically, the depth of the U-shaped groove 332 is less than the height of the cleaning component 340, allowing the cleaning component 340 to protrude from the groove 332 and contact the inner wall of the pipe 100 to achieve the cleaning purpose. Simultaneously, the width of the groove 332 is correspondingly set to the width of the cleaning component 340.

[0061] like Figure 2As shown, the sample cell cleaning mechanism also includes a first end cap 400 and a second end cap 500. The first end cap 400 is connected to the main body 200 and abuts against one end of the tube 100. The first end cap 400 is provided with a liquid inlet 410, which is configured to inject liquid into the tube 100. The second end cap 500 is connected to the main body 200 and abuts against the other end of the tube 100. The second end cap 500 is provided with a connecting cavity 510 and a drain port 520. The connecting cavity 510 connects the tube 100 and the drain port 520, which is configured to drain the liquid in the tube 100.

[0062] The first end cap 400 and the second end cap 500 are used to inject liquid into the tube 100 and to drain liquid from the tube 100, so as to facilitate the testing of the sample using the sample cell cleaning mechanism.

[0063] Specifically, both ends of the main body 200 are provided with internal threads, the cleaning end of the first end cover 400 is provided with external threads, the cleaning end of the second end cover 500 is provided with external threads, and the first end cover 400 and the second end cover 500 are respectively connected to the two ends of the main body 200 by threads.

[0064] Optionally, both the inlet 410 and the outlet are threaded holes to facilitate the external piping.

[0065] The sample cell cleaning mechanism also includes a seal 600, which is connected to the second end cap 500 and is located at the end of the communicating cavity 510 away from the tube 100. The cleaning end of the cleaning assembly 300 passes through the seal 600 and is disposed inside the tube 100. The seal 600 and the first end cap 400 together seal both ends of the tube 100, thereby ensuring the airtightness of the tube 100.

[0066] Specifically, the drive rod 320 of the cleaning assembly 300 passes through the seal 600. One end of the drive rod 320 is connected to the external drive member 310, and the other end is connected to the piston 330 located in the tube 100. The drive rod 320 reciprocates within the seal 600.

[0067] Optionally, the surface roughness of the drive rod 320 is Ra 0.1μm - 0.4μm, thereby reducing the friction between the drive rod 320 and the seal 600.

[0068] In one embodiment, the machining texture on the surface of the drive rod 320 extends axially along the drive rod 320, thereby reducing friction between the machining texture and the seal 600 during the reciprocating motion of the drive rod 320 and preventing leakage between the seal 600 and the drive rod 320 due to cross-textures. Specifically, the machining texture is the surface texture generated by the drive rod 320 during the machining process. Since conventional rod-shaped structures like the drive rod 320 are machined by rotating circumferentially on a lathe, circumferentially extending machining textures are generated on the surface of the drive rod 320. The direction of these machining textures is perpendicular to the axial movement direction of the drive rod 320. When there is a deviation in the coaxiality between the drive rod 320 and the seal 600, the limiting of the seal 600 can easily generate torque on the drive rod 320, and the circumferential machining texture of the drive rod 320 is prone to cracking or breakage under the action of torque. To avoid this problem, the drive rod 320 is machined along its axial direction, giving its surface a machining texture that extends axially. The direction of the machining texture is consistent with the direction of movement, which prevents cracks or breakage from occurring at the machining texture when torque is present on the drive rod 320, thus improving the service life of the drive rod 320.

[0069] The end face of the seal 600 near the pipe fitting 100 is coplanar with the side of the drain port 520 away from the pipe fitting 100, so that the drain port 520 can completely drain the internal liquid and reduce the liquid flow retention area in the connecting cavity 510.

[0070] The end of the connecting cavity 510 away from the pipe fitting 100 is provided with a step 530, and the end of the sealing element 600 near the pipe fitting 100 is provided with a boss 610. The outer diameter of the step 530 and the corresponding hole diameter of the boss 610 are transitionally fitted, which helps to ensure the coaxiality of the sealing element 600 and the pipe fitting 100 and helps to improve the stability of the reciprocating motion of the drive rod 320.

[0071] The sample cell cleaning mechanism also includes a pressure block, which is sleeved on the seal 600 and abuts against the seal 600. The pressure block is connected to the second end cap 500 and is used to fix the seal 600, thereby improving structural stability. For example, the pressure block is threadedly connected to the second end cap 500.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sample cell cleaning mechanism, characterized in that, include: Pipe fittings (100); The main body (200) is sleeved on the pipe fitting (100). The main body (200) is provided with an optical path channel (210), which penetrates the pipe fitting (100) to guide the optical path through the pipe fitting (100). A cleaning component (300) has a cleaning end located in the pipe fitting (100). The cleaning end of the cleaning component (300) can reciprocate along the axial direction of the pipe fitting (100) within the pipe fitting (100) to clean the inner wall of the pipe fitting (100).

2. The sample cell cleaning mechanism according to claim 1, characterized in that, The cleaning component (300) includes: Drive unit (310); A drive rod (320) is connected to the output end of the drive member (310), and the drive rod (320) extends along the axial direction of the tube (100); Piston (330), disposed on the drive rod (320); and A cleaning element (340) is sleeved on the piston (330), and the driving element (310) is configured to drive the piston (330) to reciprocate along the axial direction of the tube (100) so that the cleaning element (340) cleans the inner wall of the tube (100).

3. The sample cell cleaning mechanism according to claim 2, characterized in that, The piston (330) divides the pipe (100) into a first chamber (110) and a second chamber (120). The piston (330) is provided with a through hole (331) that extends axially along the pipe (100). The through hole (331) is configured to balance the pressure in the first chamber (110) and the second chamber (120) when the piston (330) moves.

4. The sample cell cleaning mechanism according to claim 2, characterized in that, The piston (330) has a groove (332) on its outer periphery. The groove (332) has a U-shaped cross-section and the cleaning component (340) is located in the groove (332).

5. The sample cell cleaning mechanism according to claim 2, characterized in that, The machining texture on the surface of the drive rod (320) extends along the axial direction of the drive rod (320).

6. The sample cell cleaning mechanism according to any one of claims 1-5, characterized in that, Also includes: A first end cap (400) is connected to the main body (200) and abuts against one end of the pipe fitting (100). The first end cap (400) has a liquid inlet (410) configured to inject liquid into the pipe fitting (100). The second end cap (500) is connected to the main body (200) and abuts against the other end of the pipe fitting (100). The second end cap (500) is provided with a connecting cavity (510) and a drain port (520). The connecting cavity (510) is connected to the pipe fitting (100) and the drain port (520). The drain port (520) is configured to discharge liquid from the pipe fitting (100).

7. The sample cell cleaning mechanism according to claim 6, characterized in that, Also includes: A seal (600) is connected to the second end cap (500), and the seal (600) is located at the end of the communicating cavity (510) away from the pipe (100). The cleaning end of the cleaning assembly (300) passes through the seal (600) and is disposed in the pipe (100).

8. The sample cell cleaning mechanism according to claim 7, characterized in that, The end face of the seal (600) near the pipe (100) is coplanar with the side of the drain port (520) away from the pipe (100).

9. The sample cell cleaning mechanism according to claim 7, characterized in that, The connecting cavity (510) has a step (530) at one end away from the pipe fitting (100), and the sealing element (600) has a boss (610) at one end near the pipe fitting (100). The outer diameter of the step (530) is transitionally fitted with the corresponding hole diameter of the boss (610).

10. The sample cell cleaning mechanism according to any one of claims 7-9, characterized in that, Also includes: A pressure block (700) is fitted onto the sealing element (600) and abuts against the end face of the sealing element (600). The pressure block (700) is connected to the second end cap (500).

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