An automatic cap opening and closing device and a titration analyzer

Abstract

This utility model provides an automatic cap-opening and closing device and a titration analyzer, relating to the field of analytical instrument technology. The automatic cap-opening and closing device includes a support mechanism, a driving mechanism, an adsorption mechanism, and a detection mechanism. The driving mechanism is fixedly mounted on the support mechanism. The adsorption mechanism is connected to the driving end of the driving mechanism and can reciprocate under the drive of the driving mechanism to adsorb or release the cap. The detection mechanism is mounted on the support mechanism and is used to detect the cap's open / closed state. The titration analyzer includes the automatic cap-opening and closing device. This utility model, through the cooperation of the driving mechanism, adsorption mechanism, and detection mechanism, can automatically complete the cap-opening and closing actions, which not only significantly improves operating efficiency and reduces labor intensity, but also effectively reduces the interference of human factors on the analysis results of the titration analyzer, ensuring the reliability of the results, while eliminating safety hazards and improving operational safety.

Description

Technical Field

[0001] This utility model relates to the field of analytical instrument technology, specifically to an automatic cap opening and closing device and a titration analyzer. Background Technology

[0002] In the field of chemical analysis, titration analyzers are a commonly used analytical instrument widely applied in various scenarios such as water quality testing, food composition analysis, and pharmaceutical research and development. The core of the instrument is to determine the content of the target substance in the sample by precisely controlling the amount of titrant added and combining it with chemical reactions. The accuracy and reliability of the analytical results have an important impact on subsequent experimental judgments and product quality control. Currently, most mainstream titration analyzers on the market still rely on manual operation for opening and closing the lids of reaction vessels (such as titration cups) during titration analysis. The specific procedure is as follows: before titration, the operator manually opens the lid of the reaction vessel; after the sample is injected into the reaction vessel or relevant pretreatment steps are completed, the operator manually closes the lid and starts the titration analysis program; after each titration analysis is completed, the operator must manually open the lid again to remove the reaction vessel for cleaning or replacement, preparing for the next analysis. However, this manual opening and closing method has obvious defects and shortcomings: 1. Low operational efficiency: In batch sample analysis scenarios, the analysis process for each sample requires operators to repeatedly open and close the lid, which not only increases the labor intensity of operators, but also limits the number of samples that can be analyzed per unit time. Second, the accuracy of analysis is greatly affected by human factors: During the manual opening and closing of the lid, it is difficult for the operator to maintain consistent force and accuracy in the lid position. If the lid position is off, it may lead to poor sealing of the reaction vessel, resulting in problems such as reagent evaporation and the entry of outside air during titration, affecting the stability of the reaction system and thus causing deviations in the analytical results. In addition, if the operator's hands come into contact with the reaction vessel or lid during the operation, impurities may be introduced, further interfering with the accuracy of the analysis. Third, there are safety hazards: some titration analysis experiments use corrosive and toxic chemical reagents. When manually opening and closing the lid, the operator's hands are likely to come into direct or indirect contact with these dangerous reagents, which may result in burns or poisoning. At the same time, if improper operation causes reagent spillage, it may also pollute the experimental environment or even cause more serious safety accidents.

[0003] Fourth, difficulty in achieving automated integration: With the trend of laboratory automation and intelligence, titration analysis processes increasingly need to work in conjunction with other automated equipment such as automatic sample introduction systems and automatic reagent addition systems to form a complete automated analysis production line. However, the manual cap-opening and closing step, as a manual operation, cannot be seamlessly integrated with other automated equipment, becoming a key bottleneck restricting the full automation of titration analysis processes and hindering further improvement in overall analytical efficiency and the realization of operational standardization. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic lid opening and closing device to solve the above-mentioned technical problems existing in the prior art; the preferred technical solution among the many technical solutions provided by this utility model can produce many technical effects, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This utility model provides an automatic lid opening and closing device, comprising a support mechanism, a drive mechanism, an adsorption mechanism, and a detection mechanism, wherein: the drive mechanism is fixedly mounted on the support mechanism; the adsorption mechanism is connected to the drive end of the drive mechanism and can reciprocate under the drive of the drive mechanism to adsorb or release the lid; the detection mechanism is mounted on the support mechanism and is used to detect the lid opening and closing status.

[0006] Preferably, the driving mechanism is configured as a linear driving mechanism, the driving end of which is connected to the adsorption mechanism and can drive the adsorption mechanism to reciprocate along a straight line.

[0007] Preferably, the linear drive mechanism is configured as a vertical telescopic mechanism, which is fixedly mounted on the support mechanism, and the bottom telescopic end of the vertical telescopic mechanism is connected to the adsorption mechanism; the vertical telescopic mechanism is configured as an electric push rod.

[0008] Preferably, the adsorption mechanism is an electromagnet.

[0009] Preferably, the detection mechanism includes a position sensor, which is disposed on the support mechanism and is used to detect the relative position of the adsorption mechanism.

[0010] Preferably, the support mechanism includes a support arm assembly and a housing assembly, wherein: the end of the support arm assembly is connected to the housing assembly, the driving mechanism and the adsorption mechanism are both disposed within the housing assembly, the bottom side of the housing assembly is provided with an opening for the adsorption mechanism to move out or back, and the detection mechanism is disposed at the end of the support arm assembly.

[0011] Preferably, the support arm assembly includes a forearm and a rear arm, wherein: the forearm and the rear arm are fixedly connected by an inner connector; and the housing assembly is fixedly connected to the forearm.

[0012] Preferably, the housing assembly includes an upper housing and a lower housing, wherein: the upper housing is disposed on the upper side of the lower housing, the driving mechanism is fixedly disposed in the upper housing, the lower housing is connected to the end of the support arm assembly, the adsorption mechanism is movably disposed in the lower housing, and the opening is disposed on the lower housing.

[0013] Preferably, the automatic cover opening and closing device includes a control board, which is disposed within the support arm assembly. The drive mechanism, the adsorption mechanism, and the detection mechanism are all electrically connected to the control board. The control board is electrically connected to a main unit wiring harness, and a wiring harness channel is provided within the support arm assembly. The main unit wiring harness passes through the wiring harness channel and is connected to a plug.

[0014] This invention provides a titration analyzer, including any of the aforementioned automatic cap opening and closing devices.

[0015] The automatic cap-opening and closing device and titration analyzer provided by this utility model have at least the following advantages: I. Significantly improves operational efficiency and reduces labor intensity: The drive mechanism automatically opens and closes the cap, eliminating the need for manual intervention. In batch sample analysis scenarios, the device can continuously and efficiently complete the opening and closing of each reaction vessel according to a preset program, significantly reducing manual operation steps. This not only increases the number of samples analyzed per unit time but also greatly reduces the labor intensity of operators, avoiding fatigue caused by repetitive mechanical operations. II. Ensure analytical accuracy and improve result reliability: The adsorption mechanism acts on the cap with a stable adsorption force, while the drive mechanism precisely controls the movement trajectory and force of the adsorption mechanism, ensuring accurate positioning and smooth operation of the cap during opening and closing. Combined with the detection mechanism's real-time monitoring of the cap's opening and closing status, this effectively avoids the problem of poor sealing of the reaction vessel caused by uneven force and positional deviation during manual operation. Simultaneously, automated operation reduces the opportunity for manual contact with the cap and reaction vessel, lowering the risk of impurity introduction and ensuring the stability of the reaction system. This significantly improves the accuracy and reliability of titration analysis results, reducing the interference of human factors on the analytical results. III. Eliminate safety hazards and improve operational safety: The device automates the opening and closing of the lid, eliminating the need for operators to directly contact the reaction vessel and lid. This is especially beneficial in titration experiments using corrosive or toxic reagents, effectively preventing operators from coming into contact with hazardous reagents and fundamentally reducing the risk of burns and poisoning. At the same time, automated operation also reduces the probability of reagent spillage due to improper manual handling, protecting the experimental environment and further enhancing the overall safety of the operation. IV. Facilitating automation integration and promoting process standardization: This device features a simple and stable design, seamlessly integrating with existing control systems of titration analyzers. It can also be easily incorporated into automated analytical production lines comprised of automatic sample loading and reagent addition systems. This eliminates the manual cap-opening and closing process, enabling fully automated operation from sample loading, cap opening, titration analysis to cap closing and container transfer. Furthermore, the automated operation mode ensures consistency in every cap-opening and closing action, facilitating the establishment of standardized titration analysis procedures, reducing operational differences between different operators, and further guaranteeing the repeatability and comparability of analytical results, aligning with the development trend of laboratory automation and intelligence. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of one embodiment of the present invention; Figure 2 This is a schematic diagram of another embodiment of the present invention; Figure 3 This is an assembly diagram of the present invention; Figure 4 This is a cross-sectional schematic diagram of a portion of the structure of this utility model; Figure 5 This is a schematic diagram of the support mechanism of this utility model; Figure 6 This is an exploded view of the support mechanism of this utility model.

[0017] Figure Labels 1. Support mechanism; 11. Support arm assembly; 111. Forearm; 112. Rear arm; 113. Connector; 12. Housing assembly; 121. Lower housing; 122. Upper housing; 2. Drive mechanism; 3. Adsorption mechanism; 31. Electromagnet; 4. Detection mechanism; 5. Control board; 6. Plug. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: This utility model provides an automatic lid opening and closing device, see reference. Figures 1 to 6 As shown, the automatic cover opening and closing device includes a support mechanism 1, a drive mechanism 2, an adsorption mechanism 3, and a detection mechanism 4.

[0020] The driving mechanism 2 is fixedly mounted on the support mechanism 1 to provide power for the movement of the adsorption mechanism 3; the adsorption mechanism 3 is connected to the driving end of the driving mechanism 2 and can reciprocate under the drive of the driving mechanism 2, and open or close the cover by adsorption; the detection mechanism 4 is mounted on the support mechanism 1 to detect the open or closed state of the cover.

[0021] When the cover is opened, the drive mechanism 2 drives the adsorption mechanism 3 to move from the initial position to the opening position. The adsorption mechanism 3 is activated, generating an adsorption force to adsorb the cover, and then moves away from the opening position under the drive mechanism 2, thereby realizing the opening of the cover.

[0022] When the lid is closed, the drive mechanism 2 drives the adsorption mechanism 3 back to the open position, the adsorption mechanism 3 closes, the adsorption force is eliminated, the adsorption mechanism 3 detaches from the lid, and returns to the initial position under the drive of the drive mechanism 2, and the lid closing is completed.

[0023] During the above process, the detection mechanism 4 detects the relative position of the adsorption mechanism 3 in real time, thereby detecting the opening and closing status of the cover and ensuring the opening and closing effect.

[0024] This invention, through the cooperation of the driving mechanism 2, the adsorption mechanism 3, and the detection mechanism 4, can automatically complete the opening and closing of the lid, which not only significantly improves the operating efficiency and reduces the labor intensity, but also effectively reduces the interference of human factors on the analysis results of the titration analyzer, ensuring the reliability of the results, while eliminating safety hazards and improving the safety of operation.

[0025] Example 2: Example 2 is based on Example 1: like Figures 1 to 6As shown, the driving mechanism 2 is configured as a linear driving mechanism 2. The driving end of the linear driving mechanism 2 is connected to the adsorption mechanism 3 and can drive the adsorption mechanism 3 to move back and forth in a straight line.

[0026] The linear drive mechanism 2 is used to enable the adsorption mechanism 3 to open and close the lid in a reciprocating motion along a linear trajectory. This not only has a simple structure and a simple and controllable running trajectory, but also effectively ensures the alignment accuracy between the lid and the reaction vessel.

[0027] As an optional implementation, the linear drive mechanism 2 is configured as a vertical telescopic mechanism, which is fixedly mounted on the support mechanism 1, and the bottom telescopic end of the vertical telescopic mechanism is connected to the adsorption mechanism 3.

[0028] The vertical telescopic mechanism can be an electric telescopic mechanism, a pneumatic telescopic mechanism, or a hydraulic telescopic mechanism.

[0029] Preferably, the vertical telescopic mechanism is configured as an electric push rod, which has the advantages of stable power output and high control precision.

[0030] As an optional implementation, the adsorption mechanism 3 is configured as an electromagnet 31.

[0031] The cover contains a ferromagnetic material, which can stably attract the cover when the electromagnet 31 is energized.

[0032] The electromagnetic adsorption method not only provides rapid adsorption and release response, improving operational efficiency, but also ensures high adsorption stability, guaranteeing the opening and closing effect of the lid. In addition, it has a compact structure, small size, and occupies little space.

[0033] As an optional implementation, the detection mechanism 4 includes a position sensor, which is disposed on the support mechanism 1 and is used to detect the relative position of the adsorption mechanism 3.

[0034] The position sensor can directly detect the real-time position of the adsorption mechanism 3, ensuring that the adsorption mechanism 3 moves into place when performing the opening or closing action.

[0035] As an optional implementation, the support mechanism 1 includes a support arm assembly 11 and a housing assembly 12.

[0036] The end of the support arm assembly 11 is connected to the housing assembly 12. The drive mechanism 2 and the adsorption mechanism 3 are both located inside the housing assembly 12. The bottom side of the housing assembly 12 is provided with an opening for the adsorption mechanism 3 to move out or back. The detection mechanism 4 is located at the end of the support arm assembly 11.

[0037] The integrated layout structure not only protects the core components but also makes the overall structure more compact.

[0038] As an optional implementation, the support arm assembly 11 includes a forearm 111 and a rear arm 112, which are fixedly connected by an inner connector 113.

[0039] Specifically, the inner connector 113 is a right-angle connector. The ends of the forearm 111 and the rear arm 112 are connected by the right-angle connector and threaded fasteners. The right-angle connector is located inside the forearm 111 and the rear arm 112, forming a concealed installation.

[0040] The housing assembly 12 is fixedly connected to the end of the forearm 111.

[0041] Specifically, the housing assembly 12 is inserted into the forearm 111. To further enhance the connection's strength, connection holes for installing threaded fasteners are provided on the end sidewall of the forearm 111 and at corresponding positions on the housing assembly 12.

[0042] As an optional implementation, the housing assembly 12 includes an upper housing 122 and a lower housing 121. The upper housing 122 is disposed on the upper side of the lower housing 121. The electric push rod is fixedly disposed inside the upper housing 122. The lower housing 121 is connected to the end of the forearm 111. The electromagnet 31 is movably disposed inside the lower housing 121. The opening is disposed on the lower housing 121. The telescopic end of the electric push rod is inserted into the lower housing 121 and connected to the electromagnet 31.

[0043] As an optional implementation, the automatic cover opening and closing device includes a control board 5, which is disposed inside the forearm 111. The electric push rod, the electromagnet 31, and the position sensor are all electrically connected to the control board 5.

[0044] The control board 5 is electrically connected to a main unit wiring harness, and the support arm assembly 11 has a wiring harness channel. The main unit wiring harness passes through the wiring harness channel and is connected to a plug 6, which is used to connect to the main unit of the titration analyzer.

[0045] Example 3 Example 3 is based on Example 2: This utility model provides a titration analyzer, which includes the automatic cap opening and closing device.

[0046] The titration analyzer equipped with the aforementioned automatic cap opening and closing device can automatically open and close the analytical container and cap without much manual intervention. This not only ensures high operational efficiency and low labor intensity, but also guarantees analytical accuracy, improves the reliability of the analytical structure, eliminates safety hazards, and enhances operational safety.

[0047] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0048] Furthermore, 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 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 according to the specific circumstances.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An automatic lid-opening and closing device, characterized in that, It includes a support mechanism, a driving mechanism, an adsorption mechanism, and a detection mechanism, among which: The drive mechanism is fixedly mounted on the support mechanism; The adsorption mechanism is connected to the drive end of the drive mechanism and can reciprocate under the drive of the drive mechanism to adsorb or release the cover. The detection mechanism is mounted on the support mechanism and is used to detect the open / closed state of the cover.

2. The automatic cover opening and closing device according to claim 1, characterized in that, The driving mechanism is configured as a linear driving mechanism, and the driving end of the linear driving mechanism is connected to the adsorption mechanism, and can drive the adsorption mechanism to reciprocate along a straight line.

3. The automatic cover opening and closing device according to claim 2, characterized in that, The linear drive mechanism is configured as a vertical telescopic mechanism, which is fixedly mounted on the support mechanism, and the bottom telescopic end of the vertical telescopic mechanism is connected to the adsorption mechanism. The vertical telescopic mechanism is configured as an electric push rod.

4. The automatic cover opening and closing device according to claim 1, characterized in that, The adsorption mechanism is configured as an electromagnet.

5. The automatic cover opening and closing device according to claim 1, characterized in that, The detection mechanism includes a position sensor, which is mounted on the support mechanism and is used to detect the relative position of the adsorption mechanism.

6. The automatic cover opening and closing device according to claim 1, characterized in that, The support mechanism includes a support arm assembly and a housing assembly, wherein: The end of the support arm assembly is connected to the housing assembly. The driving mechanism and the adsorption mechanism are both disposed inside the housing assembly. The bottom side of the housing assembly is provided with an opening for the adsorption mechanism to move out or back. The detection mechanism is disposed at the end of the support arm assembly.

7. The automatic cover opening and closing device according to claim 6, characterized in that, The support arm assembly includes a forearm and a rear arm, wherein: The forearm and the rear arm are fixedly connected by an internal connector; The housing assembly is fixedly connected to the forearm.

8. The automatic cover opening and closing device according to claim 6, characterized in that, The housing assembly includes an upper housing and a lower housing, wherein: The upper housing is disposed on the upper side of the lower housing, the driving mechanism is fixedly disposed in the upper housing, the lower housing is connected to the end of the support arm assembly, the adsorption mechanism is movably disposed in the lower housing, and the opening is disposed on the lower housing.

9. The automatic cover opening and closing device according to claim 6, characterized in that, The automatic cover opening and closing device includes a control board, which is disposed in the support arm assembly. The driving mechanism, the adsorption mechanism, and the detection mechanism are all electrically connected to the control board. The control board is electrically connected to a host wiring harness, and the support arm assembly has a wiring harness channel. The host wiring harness passes through the wiring harness channel and is connected to a plug.

10. A titration analyzer, characterized in that, The automatic cover opening and closing device includes any one of claims 1 to 9.

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