A sample holder for a vacuum parallel concentrator

Abstract

The utility model discloses a kind of sample holder for vacuum parallel concentrator, including bottom plate set up from top to bottom, support plate, support plate is provided with placing hole, the bottom of bottom plate is provided with low-temperature anti-steam dry module, and bottom plate is provided with the connecting hole that is communicated with low-temperature anti-steam dry module;Opening and closing mechanism is arranged at connecting hole;Support plate is provided with driving mechanism.In initial stage of reaction, the tail pipe of concentration cup does not extend into low-temperature anti-steam dry module, so as to be able to accept the sufficient heating of water bath;With the progress of reaction, the tail pipe of concentration cup can be driven by driving mechanism to pass through connecting hole downward and extend into low-temperature anti-steam dry module.At this time, the concentrated solution in tail pipe can be low-temperature protected by low-temperature anti-steam dry module.Compared with prior art, the vertical position of concentration cup is adjusted by driving mechanism in the utility model, so that the solution of concentration cup can be fully heated in initial stage of reaction, and the efficiency of concentration operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum parallel concentrator technology, and in particular, to a sample holder for a vacuum parallel concentrator. Background Technology

[0002] A vacuum parallel concentrator is a laboratory device based on the principle of vacuum decompression. By reducing ambient pressure, it lowers the boiling point of the solvent. Combined with heating and shaking functions, it enables rapid, parallel concentration or drying of multiple samples. It is widely used in pretreatment processes for environmental monitoring, food safety, and biochemical analysis, efficiently evaporating solvents and condensing them for recovery, avoiding damage to the target analytes from high temperatures.

[0003] Currently, Chinese patent CN114985031B discloses a vacuum quantitative concentration device, comprising a condenser reflux module, a water bath heating module, and a low-temperature anti-evaporation drying module arranged sequentially from top to bottom. During concentration, the concentration cup passes through the modules in sequence. The concentration cup is effectively kept vertical by the condenser reflux module, allowing it to receive sufficient heating from the water bath heating module. The tail tube of the concentration cup extends into the low-temperature anti-evaporation drying module, and cold water is injected into the module to maintain the concentrated solution in the tail tube at a low temperature.

[0004] However, the tail tube extends into the low-temperature anti-evaporation dry module at the beginning of the concentration operation, which means that the solution in the tail tube cannot be fully heated in the early stage of the reaction, resulting in a decrease in the efficiency of the concentration operation. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a sample holder for a vacuum parallel concentrator.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A sample holder for a vacuum parallel concentrator is characterized by comprising a base plate and a support plate arranged vertically, wherein the support plate has a placement hole, the bottom of the base plate has a low-temperature anti-evaporation drying module, and the base plate has a connection hole communicating with the low-temperature anti-evaporation drying module; an opening and closing mechanism is provided at the connection hole, the opening and closing mechanism being adapted to open or seal the connection hole; and a driving mechanism is provided on the support plate, the driving mechanism being adapted to drive the concentration cup in the placement hole to extend downward into the connection hole.

[0008] Preferably, the drive mechanism includes a telescopic rod connected between the support plate and the base plate.

[0009] Preferably, the opening and closing mechanism includes an opening and closing plate that is laterally spring-loaded to the base plate, and the top of the opening and closing plate is constructed with an inclined surface.

[0010] Preferably, there are two opposing opening and closing plates, which are joined together to seal the connecting hole, and the two inclined surfaces on the two opening and closing plates are inclined in opposite directions.

[0011] Preferably, the driving mechanism includes a support ring disposed at the placement hole and vertically movable, the support ring being used to abut against the outer wall flange of the condenser cup; the support ring is adapted to move between a first position and a second position; in the first position, the support ring pushes the bottom of the condenser cup out of the connection hole; in the second position, the support ring causes the bottom of the condenser cup to extend into the connection hole.

[0012] Preferably, the support plate is provided with an electromagnet, which, when energized, can push the support ring from the second position to the first position.

[0013] Preferably, the support ring is detachable.

[0014] Preferably, the support plate is provided with connecting posts, which are slidably adapted vertically. At least two connecting posts are provided circumferentially, and the ends of the connecting posts are provided with protrusions. The bottom surface of the support ring is provided with at least two mounting holes, and the protrusions are engaged with the corresponding mounting holes.

[0015] Preferably, a support sleeve is coaxially provided at the placement hole, and the electromagnet is disposed at the top end of the support sleeve.

[0016] The beneficial effects of this invention are as follows: In the initial stage of the reaction, the tail tube of the concentration cup is not inserted into the low-temperature anti-evaporation dry module, thus allowing it to receive sufficient heating from the water bath. As the reaction proceeds, the tail tube of the concentration cup can be driven downwards through the connecting hole and into the low-temperature anti-evaporation dry module via the drive mechanism. At this time, the low-temperature anti-evaporation dry module can provide low-temperature protection for the concentrated solution in the tail tube. Compared with the prior art, this invention adjusts the vertical position of the concentration cup through the drive mechanism, ensuring that the solution in the concentration cup is fully heated in the initial stage of the reaction, thereby improving the efficiency of the concentration operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0018] Figure 2 for Figure 1 Enlarged view of part A;

[0019] Figure 3 This is a schematic diagram of the support ring structure.

[0020] Reference numerals: 1. Base plate; 2. Support plate; 3. Placement hole; 4. Low temperature anti-steam drying module; 5. Connection hole; 6. Opening and closing mechanism; 7. Drive mechanism; 8. Telescopic rod; 9. Opening and closing plate; 10. Inclined surface; 11. Support ring; 12. Electromagnet; 13. Connecting column; 14. Protrusion; 15. Mounting hole; 16. Support sleeve. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figures 1 to 3 As shown, a sample holder for a vacuum parallel concentrator includes a base plate 1 and a support plate 2 arranged vertically. The support plate 2 has placement holes 3 for inserting a concentration cup, while a low-temperature anti-evaporation module 4 is located at the bottom of the base plate 1. The support plate 2 supports the concentration cup, ensuring it remains essentially vertical for stable concentration operations. The low-temperature anti-evaporation module 4 provides low-temperature protection for the concentrated solution in the tail tube of the concentration cup, for example, by injecting cold water.

[0023] The low-temperature anti-steam drying module 4 is disclosed in the prior art, so it will not be described in detail in this utility model. For example, it can be set up as disclosed in Chinese Patent No. CN114985031B. The only difference is that the housing of the low-temperature anti-steam drying module 4 disclosed in this invention is attached as a whole to the bottom surface of the base plate 1, but this is a basic design means for those skilled in the art, so it will not be described in detail.

[0024] A connection hole 5 is provided on the base plate 1, through which the tail tube can pass and extend into the low-temperature anti-evaporation drying module 4. To ensure uniform heating of the solution throughout the concentration cup during the initial reaction phase, a drive mechanism 7 is adapted to the support plate 2, and an opening / closing mechanism 6 is provided at the connection hole 5. The drive mechanism 7 is designed to move the concentration cup vertically, specifically allowing the tail tube to insert downwards into the connection hole 5 or be pulled upwards from it. When the tail tube is pulled out of the connection hole 5, the opening / closing mechanism 6 seals the connection hole 5, preventing hot water from flowing into the low-temperature anti-evaporation drying module 4. Similarly, when the tail tube needs to be inserted into the connection hole 5, the opening / closing mechanism 6 opens the connection hole 5 to allow the tail tube to extend into the low-temperature anti-evaporation drying module 4.

[0025] For a vacuum parallel concentrator, its top cover can be fitted with an elastic sleeve and elastic pad to engage with the top of the concentration cup, ensuring a relatively airtight seal inside the cup. Alternatively, the top cover can be adapted to rise and fall synchronously with the concentration cup via a drive mechanism.

[0026] In some embodiments, the opening mechanism includes an opening / closing plate 9 laterally spring-loaded to the base plate 1, and the top of the opening / closing plate 9 is provided with an inclined surface 10. When the driving mechanism 7 drives the concentration cup to move downward, the bottom end of the concentration cup will abut against the opening / closing plate 9, and under the guidance of the inclined surface 10, the opening / closing plate 9 will be pushed and moved laterally, thereby opening the connection hole 5.

[0027] For example, a spring can be connected between the opening / closing plate 9 and the base plate 1 to achieve a laterally spring-loaded connection. Under the resistance of the spring, the opening / closing plate 9 will remain covering the connection hole 5 in its natural state. In a preferred example, there are two opposing opening / closing plates 9, and the connection hole 5 is sealed by the joining of the two plates 9. In this example, the two inclined surfaces 10 on the two opening / closing plates 9 are specifically adapted to have opposite inclination directions, which allows the tail tube to be guided between the two inclined surfaces 10 and facilitates the laterally pushed opening / closing plate 9 to open the connection hole 5.

[0028] The drive mechanism 7 may include a telescopic rod 8 connected between the support plate 2 and the base plate 1. When the telescopic rod 8 is extended, the tail tube is pulled out of the connecting hole 5; similarly, when the telescopic rod 8 is retracted, the tail tube is inserted into the connecting hole 5. The telescopic rod 8 can be electrically, pneumatically, or hydraulically operated, which are common techniques in the prior art and will not be described further.

[0029] Driven by the telescopic rod 8, all the concentration cups on the support plate 2 will simultaneously insert their tail tubes into the low-temperature anti-steam dry module 4 for low-temperature protection.

[0030] See Figure 3 In another configuration, the drive mechanism 7 includes a support ring 11 disposed at the placement hole 3 and movable vertically, which abuts against the outer wall flange of the condenser cup. Furthermore, the support ring 11 is adapted to move between a first position and a second position, wherein in the first position, the tail tube of the condenser cup is pulled out of the connection hole 5; and in the second position, the tail tube of the condenser cup is inserted into the connection hole 5.

[0031] Each support ring 11 can be inserted into or pulled out of the tail tube into the connection hole 5 for each concentration cup, thereby allowing for more precise insertion of the tail tube into the low-temperature anti-evaporation module for low-temperature protection according to the different concentration operation progress in each concentration cup.

[0032] For example, the vertical movement of the support ring 11 can also be achieved by a drive element similar to the telescopic rod 8 described above. In a preferred example, an electromagnet 12 can be provided on the support plate 2, and the support ring 11 can be adapted to be at least partially magnetic. By energizing the electromagnet 12, the electromagnet 12 can push the support ring 11 to rise, which will also allow the support ring 11 to be pushed out from the second position to the first position.

[0033] In some embodiments, a support sleeve 16 may be provided at the placement hole 3, and a support ring 11 may be slidably fitted vertically to the top of the support sleeve 16, while the electromagnet 12 may be disposed on the top surface of the support sleeve 16. For example, a connecting post 13 may be slidably fitted to the top of the support sleeve 16, and at least two connecting posts 13 may be arranged circumferentially, with the support ring 11 attached to the top of several connecting posts 13. As the electromagnet 12 is energized and de-energized, the connecting posts 13 and the support ring 11 will rise and fall synchronously.

[0034] For example, at least two mounting holes 15 can be provided circumferentially on the bottom surface of the support ring 11, and the mounting holes 15 correspond one-to-one with the connecting posts 13. The top of the connecting post 13 is provided with a protrusion 14, and the support ring 11 and the connecting post 13 can be detachably fixed by engaging the protrusion 14 into the corresponding mounting hole 15.

[0035] It is understandable that if the diameter of the concentration cup used for concentration operations is different, the support ring 11 with different inner diameters can be replaced to achieve adaptive support for concentration cups of different specifications.

[0036] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A sample holder for a vacuum parallel concentrator, characterized in that: It includes a base plate (1) and a support plate (2) arranged on the top and bottom. The support plate (2) is provided with a placement hole (3). The bottom of the base plate (1) is provided with a low temperature anti-steam drying module (4), and the base plate (1) is provided with a connection hole (5) communicating with the low temperature anti-steam drying module (4). An opening and closing mechanism (6) is provided at the connection hole (5), and the opening and closing mechanism (6) is adapted to be able to open or seal the connection hole (5); The support plate (2) is provided with a driving mechanism (7), which is adapted to drive the concentration cup in the placement hole (3) to extend downward into the connection hole (5).

2. The sample holder for a vacuum parallel concentrator according to claim 1, characterized in that: The drive mechanism (7) includes a telescopic rod (8) connected between the support plate (2) and the base plate (1).

3. The sample holder for a vacuum parallel concentrator according to claim 1, characterized in that: The opening and closing mechanism (6) includes an opening and closing plate (9) that is laterally elastically connected to the base plate (1), and the top of the opening and closing plate (9) is constructed with a slope (10).

4. The sample holder for a vacuum parallel concentrator according to claim 3, characterized in that: There are two opening and closing plates (9) facing each other. The two opening and closing plates (9) are joined together to seal the connecting hole (5), and the two inclined surfaces (10) on the two opening and closing plates (9) are inclined in opposite directions.

5. The sample holder for a vacuum parallel concentrator according to claim 1, 3, or 4, characterized in that: The drive mechanism (7) includes a support ring (11) disposed at the placement hole (3) and movably disposed vertically, the support ring (11) being used to abut against the outer wall flange of the concentration cup; The support ring (11) is adapted to be movable between a first position and a second position; In the first position, the support ring (11) pushes the bottom of the concentration cup out of the connection hole (5); In the second position, the support ring (11) causes the bottom of the concentration cup to extend into the connection hole (5).

6. The sample holder for a vacuum parallel concentrator according to claim 5, characterized in that: An electromagnet (12) is provided on the support plate (2). When the electromagnet (12) is energized, it can push the support ring (11) from the second position to the first position.

7. The sample holder for a vacuum parallel concentrator according to claim 5 or 6, characterized in that: The support ring (11) is detachable.

8. The sample holder for a vacuum parallel concentrator according to claim 7, characterized in that: The support plate (2) is provided with a connecting post (13), which is slidably adapted in the vertical direction. At least two connecting posts (13) are provided in the circumferential direction. The end of the connecting post (13) is provided with a protrusion (14). At least two mounting holes (15) are provided on the bottom surface of the support ring (11), and the protrusion (14) is engaged with the corresponding mounting hole (15).

9. The sample holder for a vacuum parallel concentrator according to claim 6, characterized in that: A support sleeve (16) is coaxially provided at the placement hole (3), and the electromagnet (12) is located at the top of the support sleeve (16).

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