Overflow device and automatic sampler
By designing an overflow device in the automatic sampler, and using the inclined structure of the overflow surface and overflow part to treat the liquid leakage, the liquid leakage problem in the automatic sampler is solved, and the dual effects of equipment cleaning and environmental protection are achieved.
Patent Information
- Application Number
- CN202422688229.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-05
AI Technical Summary
There is liquid leakage during the injection process of the automatic sampler, which causes waste liquid to stay inside the shell, affecting the cleaning of the equipment and environmental pollution.
An overflow device is designed, including a housing assembly and an overflow structure. Using the inclined design of the overflow surface and overflow part, the leakage liquid drips to the overflow part and discharges under the action of gravity, and combines the collection assembly and an alarm to achieve effective disposal of the leakage liquid.
Effectively prevent waste liquid from staying inside the shell, ensure the cleanliness of the equipment, prevent environmental pollution, and provide dual protection through the alarm.
Smart Images
Figure CN223295938U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of chromatography analysis, and in particular to an overflow device and an automatic sample injector. Background Art
[0002] The automatic sampler is an important instrument in chemical analysis experiments. It can avoid the problems of inaccurate quantitative analysis, errors caused by long-term repetitive work, and low work efficiency caused by manual sampling.
[0003] In related technologies, the pump valve of the automatic sampler is indispensable in the sampling process. It is particularly important to determine whether there is leakage and how to deal with the leakage when the pump valve is working. Therefore, an overflow device is urgently needed to solve the problem of how to deal with leakage. Utility Model Content
[0004] The purpose of this application is to provide an overflow device and an automatic sample injector, which can effectively deal with liquid leakage.
[0005] In the first aspect, an embodiment of the present application provides an overflow device, comprising: a shell assembly, comprising a shell structure and an overflow structure, the overflow structure being connected to the bottom of the shell structure to enclose a accommodating cavity, and an overflow portion being configured on one side of the overflow structure; an injection assembly, which is connected to the shell structure, and a partial structure of the injection assembly is located in the accommodating cavity and above the overflow structure.
[0006] In the above-mentioned implementation process, the shell structure is defined with an overflow structure and an injection assembly, so that when the injection assembly is extracting samples, if leakage occurs, the waste liquid can drip to the bottom of the overflow structure under the action of its own gravity until the height of the waste liquid is higher than the height of the overflow part, and finally discharged from the overflow part, avoiding the waste liquid from staying inside the shell assembly, thereby realizing effective disposal of the leakage.
[0007] In some embodiments, the overflow structure is configured with an overflow surface, the overflow surface is inclined at an upper end of the overflow structure, and the overflow portion is configured on the overflow surface.
[0008] In the above implementation process, the overflow surface is set to an inclined shape. When leakage occurs, even if the waste liquid drips onto the overflow surface, it can flow along the overflow surface to the bottom of the overflow structure until the height of the waste liquid is higher than the height of the overflow part, and then be discharged from the overflow part, avoiding the waste liquid from staying inside the shell assembly, thereby achieving effective disposal of the leakage.
[0009] In some embodiments, the overflow portion includes an overflow port and an overflow cavity, wherein the overflow cavity is connected to the overflow port and extends through one side of the overflow structure. The cooperation between the overflow port and the overflow cavity facilitates the discharge of waste liquid from the housing assembly's receiving cavity, preventing waste liquid from accumulating in the receiving cavity, thereby protecting the autosampler.
[0010] In some embodiments, the overflow ports are distributed along a first direction, the overflow chambers are distributed along a second direction, and the first direction and the overflow chambers are distributed at a predetermined angle. This facilitates the discharge of waste liquid from the housing assembly's accommodating chamber, prevents waste liquid from accumulating in the accommodating chamber, and protects the autosampler.
[0011] In some embodiments, the overflow device further comprises a collection assembly connected to the overflow portion. The collection assembly collects waste liquid discharged from the overflow portion, thereby ensuring a certain degree of cleanliness of the automatic sampler and preventing environmental contamination by the sample.
[0012] In some embodiments, the collection assembly includes a collection tube and a collection bucket, the collection tube being connected to the collection bucket and the overflow, respectively, and the height of the collection bucket being no higher than the height of the overflow. Collecting waste liquid discharged from the overflow in the collection bucket ensures a certain degree of cleanliness of the autosampler while also preventing environmental contamination by the sample.
[0013] In some embodiments, the overflow device further includes an alarm, the alarm is connected to the housing assembly, and the bottom surface of the probe of the alarm extends to the bottom of the overflow structure.
[0014] In the above implementation process, after the alarm is connected to the shell assembly, the bottom surface of its probe can contact the bottom of the overflow structure, so that when leakage occurs, the alarm can continue to alarm. At the same time, when the height of the waste liquid is higher than the height of the overflow part, it is discharged from the overflow part, realizing double protection of the automatic sampler.
[0015] In some embodiments, the injection assembly includes an injection pump, a first multi-way valve and a second multi-way valve, the injection pump is connected to the first multi-way valve, and the first multi-way valve is connected to the second multi-way valve.
[0016] In some embodiments, the overflow device further includes an extraction pump, the extraction pump is connected to the housing structure, and the extraction pump and the injection component are spaced apart.
[0017] In a second aspect, the present application also provides an automatic sample injector, comprising an overflow device as described in any one of the above items.
[0018] Since the automatic sample injector provided in the second aspect includes an overflow device, the automatic sample injector has all the technical effects of the overflow device, which will not be described in detail here.
[0019] Other features and advantages of the present application will be described in the subsequent description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology of the present application.
[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 A schematic structural diagram of an overflow device provided in an embodiment of the present application;
[0023] Figure 2 A front view of the overflow device provided in an embodiment of the present application;
[0024] Figure 3 for Figure 2 AA section view;
[0025] Figure 4 for Figure 3 A partial enlarged schematic diagram;
[0026] Figure 5 A schematic structural diagram of the overflow structure of the overflow device provided in an embodiment of the present application.
[0027] Figure numerals: 100, shell assembly; 101, shell structure; 102, overflow structure; 1021, overflow surface; 1022, overflow port; 1023, overflow chamber; 200, injection assembly; 201, injection pump; 202, first multi-way valve; 203, second multi-way valve; 300, collection tube; 400, collection barrel; 500, extraction pump; 600, alarm. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.
[0029] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.
[0030] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.
[0031] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or point connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.
[0032] Furthermore, the terms "first," "second," and the like are primarily used to distinguish different devices, elements, or components (which may or may not be the same in type and configuration) and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more. Example
[0033] Existing automatic sampling equipment is mainly divided into two types, one is a fixed tower automatic sampler, and the other is a rotating tower automatic sampler. The sampling tray of the fixed tower automatic sampler is an arc-shaped device formed by cutting off a part of a circle. The chromatographic injection port is located vertically below the sampling module. The sampling module can move vertically up and down relative to the chromatographic injection port, and the sampling tray can rotate relative to its own center of circle. Its working process is mainly as follows: first, the position of the sample to be tested and analyzed in the sample tray is transferred to the vertical corresponding position of the sampler in the sampling module, the sampling module moves downward, and the sampler takes the sample. Then the sampling module moves slightly upward, the sampler leaves the sample tray, and the sample tray rotates along its own center of circle, so that the non-circular edge returns to the original sampling position and then stops rotating, so that the up and down movement path of the sampling module is connected. Then the sampling module moves downward and sends the sample taken by the sampler into the chromatographic injection port, and finally resets. Although the sampling module of the automatic sampler with this structure only moves vertically up and down, it can accurately align the sampler with the chromatographic injection port, thereby improving the positioning accuracy.
[0034] The sample tray of a turret-type automatic sampler is circular, and multiple circles of sample positions are set on the sample tray. The sample module can rotate in a circle along its rotation axis, and the motion trajectory intersects with the circle formed by each circle of sample positions on the sample tray. Its working process is mainly as follows: the sample module first rotates, and when the sampler in the sample module reaches above a certain sample position, it stops rotating. The sample module moves downward, and the sampler takes a sample. Then the sample module moves slightly upward, and the sampler leaves the sample tray. The sample module rotates again. When the sampler is vertically aligned with the chromatographic inlet, the sample module moves downward and sends the sample taken by the sampler into the chromatographic inlet, and finally resets. The automatic sampler with this structure can realize the sampling of each sample position by the sample module with the coordinated rotation of the sample tray, meeting the needs of processing large quantities of samples.
[0035] In the present application, the overflow device provided therein can be applied to an automatic sampler, and the automatic sampler can be a fixed tower automatic sampler or a turret automatic sampler, which is not specifically limited here.
[0036] like Figure 1-Figure 5 As shown, in the first aspect, an embodiment of the present application provides an overflow device, including: a shell assembly 100, including a shell structure 101 and an overflow structure 102, the overflow structure 102 is connected to the bottom of the shell structure 101 to enclose a accommodating cavity, and an overflow portion is configured on one side of the overflow structure 102, and the height of the overflow portion is not lower than the lowest height of the upper end of the overflow structure 102; an injection assembly 200, which is connected to the shell structure 101, and part of the structure of the injection assembly 200 is located in the accommodating cavity and above the overflow structure 102.
[0037] Exemplarily, the overflow structure 102 and the shell structure 101 can be fixed by a detachable connection. For example, the outer periphery of the overflow structure 102 is defined by an extended edge, and the extended edge is located on opposite sides of the overflow structure 102. The extended edges are both provided with fixing holes, and the fixing holes realize the connection between the overflow structure 102 and the shell structure 101 through fixing parts such as adapter screws.
[0038] It can be understood that the upper end of the overflow structure 102 is used to receive the leaked liquid of the sampling assembly 200. The overflow part can be directly set at the lowest position of the upper end of the overflow structure 102, or the height of the overflow part can be set to be higher than the height of the upper end of the overflow structure 102.
[0039] In the above-mentioned implementation process, the shell structure 101 is defined with an overflow structure 102 and an injection assembly 200, so that when the injection assembly 200 is extracting samples, if leakage occurs, since the height of the overflow portion is not higher than the height of the bottom of the overflow structure 102, the waste liquid can drip to the bottom of the overflow structure 102 under the action of its own gravity until the height of the waste liquid is higher than the height of the overflow portion, and finally discharged from the overflow portion, thereby avoiding the waste liquid (i.e., the liquid dripping during leakage) from staying inside the shell assembly 100, thereby achieving effective disposal of the leakage.
[0040] like Figure 3-Figure 5 As shown, the overflow structure 102 is configured with an overflow surface 1021 . The overflow surface 1021 is inclined at the upper end of the overflow structure 102 , and the overflow portion is configured on the overflow surface 1021 .
[0041] Illustratively, the upper end of the overflow structure 102 is used to receive the leaked liquid of the injection assembly 200, and the angle between the overflow surface 1021 and the upper end of the overflow structure 102 is limited to be greater than 90°, for example, the angle is set to 120°, 135° or 140°, etc.; of course, the situation of being equal to 90° is not excluded, and it can be set according to actual conditions, which will not be elaborated here.
[0042] In the above implementation process, the overflow surface 1021 is set to be inclined. When leakage occurs, even if the waste liquid drips onto the overflow surface 1021, it can flow along the overflow surface 1021 to the bottom of the overflow structure 102 until the height of the waste liquid is higher than the height of the overflow part, and then be discharged from the overflow part, avoiding the waste liquid from staying inside the shell assembly 100, thereby achieving effective disposal of the leakage.
[0043] In some embodiments, the overflow portion includes an overflow port 1022 and an overflow cavity 1023. The overflow cavity 1023 is connected to the overflow port 1022 and extends through one side of the overflow structure 102. The cooperation between the overflow port 1022 and the overflow cavity 1023 facilitates the discharge of waste liquid from the receiving cavity of the housing assembly 100, preventing waste liquid from accumulating in the receiving cavity and thus protecting the autosampler.
[0044] like Figure 3-Figure 4 As shown, the overflow port 1022 is distributed along a first direction, and the overflow chamber 1023 is distributed along a second direction. The first direction and the second direction are distributed at a predetermined angle. For example, the first direction includes but is not limited to the up-down direction, and the second direction includes but is not limited to the left-right direction. Of course, to facilitate the automatic outflow of waste liquid without increasing the cost of the device, the side of the overflow chamber 1023 facing away from the overflow port 1022 can be configured to be gradually inclined downward. This facilitates the discharge of waste liquid from the receiving chamber of the housing assembly 100, prevents waste liquid from accumulating in the receiving chamber, and protects the autosampler.
[0045] In some embodiments, the overflow device further comprises a collection assembly connected to the overflow portion. The collection assembly collects waste liquid discharged from the overflow portion, thereby ensuring a certain degree of cleanliness of the automatic sampler and preventing environmental contamination by the sample.
[0046] like Figure 3 As shown, the collection assembly includes a collection tube 300 and a collection bucket 400. The collection tube 300 connects the collection bucket 400 and the overflow portion, respectively. The height of the collection bucket 400 is no higher than the height of the overflow portion. For example, the upper end of the collection bucket 400 is lower than the height of the overflow portion. The collection bucket 400 collects waste liquid discharged from the overflow portion, thereby ensuring a certain degree of cleanliness of the autosampler and preventing environmental contamination by the sample.
[0047] In some embodiments, the overflow device also includes an alarm 600, which includes but is not limited to a liquid sensor. When the probe of the alarm 600 contacts the liquid, it can continuously send out a signal. The alarm 600 is connected to the shell assembly 100, and the bottom surface of the probe of the alarm 600 extends to the bottom of the overflow structure 102; it should be noted that the alarm 600 adopts a detachable installation mode, and the alarm state is released by disassembling and wiping the overflow structure 102 and the alarm 600.
[0048] During the above implementation process, after the alarm 600 is connected to the shell assembly 100, the bottom surface of its probe can contact the bottom of the overflow structure 102, so that when leakage occurs, the alarm 600 can continue to alarm. At the same time, when the height of the waste liquid is higher than the height of the overflow part, it is discharged from the overflow part, realizing double protection of the automatic sampler.
[0049] In some embodiments, the injection assembly 200 includes an injection pump 201, a first multi-way valve 202, and a second multi-way valve 203. The injection pump 201 is connected to the first multi-way valve 202, and the first multi-way valve 202 is connected to the second multi-way valve 203. Exemplarily, the injection pump 201 extracts a sample, passes through the sample loops of the first multi-way valve 202 and the second multi-way valve 203, and switches the valve heads thereof, allowing the sample to enter the respective analysis systems (dual-channel system).
[0050] In some embodiments, the overflow device also includes an extraction pump 500, which is connected to the shell structure 101, and the extraction pump 500 is spaced apart from the injection assembly 200. It can be understood that the extraction pump 500 is used to extract the cleaning fluid and send it to the needle washing tank to clean the injection needle.
[0051] In a second aspect, the present application also provides an automatic sample injector, comprising the overflow device as described above.
[0052] Since the automatic sample injector provided in the second aspect includes an overflow device, the automatic sample injector has all the technical effects of the overflow device, which will not be described in detail here.
[0053] In all embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms will not be elaborated in the embodiments of the present application.
[0054] It should be understood that the phrases “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” mentioned throughout the specification mean that specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.
[0055] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0056] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. An overflow device, characterized in that: include: The housing assembly includes a housing structure and an overflow structure, wherein the overflow structure is connected to the bottom of the housing structure to enclose a receiving cavity, and an overflow portion is configured on one side of the overflow structure; The sampling assembly is connected to the shell structure, and a part of the structure of the sampling assembly is located in the accommodating cavity and above the overflow structure.
2. The overflow device according to claim 1, characterized in that The overflow structure is provided with an overflow surface, the overflow surface is inclined at the upper end of the overflow structure, and the overflow portion is provided on the overflow surface.
3. The overflow device according to claim 2, characterized in that The overflow portion includes an overflow port and an overflow cavity. The overflow cavity is connected to the overflow port, and the overflow cavity passes through one side of the overflow structure.
4. The overflow device according to claim 3, characterized in that The overflow ports are distributed along a first direction, the overflow chambers are distributed along a second direction, and the first direction and the second direction are distributed at a preset angle.
5. The overflow device according to any one of claims 1 to 4, characterized in that: The overflow device further includes a collecting assembly connected to the overflow portion.
6. The overflow device according to claim 5, characterized in that The collecting assembly includes a collecting pipe and a collecting bucket. The collecting pipe is connected to the collecting bucket and the overflow portion respectively. The height of the collecting bucket is not higher than the height of the overflow portion.
7. The overflow device according to claim 1, characterized in that The overflow device further includes an alarm, which is connected to the housing assembly, and a probe bottom surface of the alarm extends to the bottom of the overflow structure.
8. The overflow device according to claim 1, characterized in that The injection assembly includes an injection pump, a first multi-way valve and a second multi-way valve. The injection pump is connected to the first multi-way valve, and the first multi-way valve is connected to the second multi-way valve.
9. The overflow device according to claim 1 or 8, characterized in that: The overflow device further includes an extraction pump, which is connected to the housing structure and spaced apart from the sampling assembly.
10. An automatic sample injector, characterized in that: Comprising the overflow device according to any one of claims 1 to 9.