Pretreatment device of multifunctional high-temperature gel permeameter

Abstract

The utility model discloses a pretreatment device for a multifunctional high-temperature gel permeameter, which relates to the technical field of polymer pretreatment, and comprises a suction filtration component, a liquid collecting container, a liquid outlet component, a liquid inlet component, a liquid outlet component, a liquid outlet component, a liquid outlet component, a liquid outlet component, a liquid outlet component and a liquid outlet component, and is characterized in that the suction filtration component comprises a vacuumizing pump, a negative-pressure channel and a containing cavity, and the negative-pressure channel is used for communicating the vacuumizing pump with the liquid collecting container; the accommodating cavity is used for accommodating a filtering assembly which is communicated with the liquid collecting container and the sample container at the same time; the pretreatment part comprises a plurality of placing positions and a second heating assembly, the placing positions are used for placing the liquid collecting containers and / or the sample containers, and the second heating assembly is used for heating the liquid collecting containers and / or the sample containers in the placing positions; according to the multifunctional high-temperature gel permeameter pretreatment device, the suction filtration assembly and the pretreatment part are integrated at the same time, and the filtration requirements of different types of polymer reagents are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to polymer pretreatment technical field more specifically, relate to a multifunctional high temperature gel permeation appearance pretreatment device. BACKGROUND

[0002] In the field of polymer material research and development, chemical experiment and industrial production, polymer pretreatment is the key link to guarantee the follow-up processing precision and product quality, undertakes the important function of impurity removal, purification and temperature control pretreatment to polymer reagent, and its result directly influences experimental data accuracy and industrial production efficiency.

[0003] In the prior art, the processing equipment for polymer reagent is mostly single station, and only has a single filtering form, such as only having positive pressure filtration, that is, a positive pressure is applied to the end of the sample container to promote the sample at the end of the sample container to be filtered through the filter piece under the action of the positive pressure, or only having negative pressure filtration, that is, a negative pressure is applied to the end of the liquid collection container to promote the sample to be filtered through the filter assembly under the action of the negative pressure; however, according to the difference in sample properties, only part of the samples are suitable for both positive pressure filtration and negative pressure filtration, and most of the samples are suitable for only one of the positive pressure filtration and the negative pressure filtration, and the existing processing equipment with single station and single filtering form cannot meet the processing needs of various samples.

[0004] In summary, how to solve the problem that different types of polymer reagents are not suitable for unified filtering form is a problem to be solved by the technical personnel in the field at present. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing a multifunctional high temperature gel permeation appearance pretreatment device which integrates the suction filtration assembly and the pretreatment part to meet the filtering needs of different types of polymer reagents.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A multifunctional high temperature gel permeation appearance pretreatment device, comprising:

[0008] The suction filtration assembly comprises a vacuum pump, a negative pressure channel and a containing cavity, the negative pressure channel is used for connecting the vacuum pump and the liquid collection container, and the containing cavity is used for containing the filter assembly which is connected with the liquid collection container and the sample container;

[0009] The pretreatment part comprises a plurality of placing positions and a second heating assembly, the placing positions are used for placing the liquid collection container and / or the sample container, and the second heating assembly is used for heating the liquid collection container and / or the sample container in the placing positions.

[0010] Preferably, the multifunctional high-temperature gel permeation chromatograph pretreatment device further comprises a machine shell.

[0011] The filter assembly is arranged in a cantilever form on the front surface of the machine shell, the containing cavity vertically penetrates through the filter assembly, and the top end and the bottom end of the containing cavity are respectively provided with a first mounting port and a second mounting port, the first mounting port is used for fixedly mounting the sample container, and the second mounting port is used for fixedly mounting the liquid collecting container.

[0012] The top of the machine shell is provided with a control assembly, and the control assembly is electrically connected with the control unit of the filter assembly.

[0013] Preferably, the filter assembly further comprises a heating shield for overall heating of the filter assembly.

[0014] Preferably, the filter assembly further comprises a first heating assembly, and the first heating assembly wraps the containing cavity and is used for heating the filter assembly mounted in the containing cavity.

[0015] Preferably, the multifunctional high-temperature gel permeation chromatograph pretreatment device further comprises a machine shell and a bottom plate, and the bottom plate is fixedly connected with the bottom of the front surface of the machine shell.

[0016] The pretreatment part is fixedly connected with the bottom plate.

[0017] The top of the machine shell is provided with a control assembly, and the control assembly is electrically connected with the control unit of the pretreatment part.

[0018] Preferably, the pretreatment part comprises a reagent bottle support, the placement position is arranged on the reagent bottle support, the second heating assembly is arranged at the bottom of the reagent bottle support, and a heat insulation plate is arranged between the second heating assembly and the bottom plate.

[0019] Preferably, the pretreatment part further comprises a pipette filtration device for pipette filtration of samples in the sample container and the liquid collecting container in the placement position.

[0020] The placement position comprises a third placement position for placing the pipette filtration device.

[0021] Preferably, the pipette filtration device comprises a pipette channel and a pressurizing device.

[0022] The pressurizing device is used for applying positive pressure to the sample container.

[0023] The pipette channel is used for connecting the sample container and the liquid collecting container, and a filter body is arranged in the pipette channel for filtering samples flowing through the pipette channel.

[0024] Preferably, the pipette filtration device comprises a slidingly mounted drawer, the sliding direction of the drawer being perpendicular to the center line of the pipette channel.

[0025] The filter body is fixedly mounted on the drawer.

[0026] Preferably, the control assembly comprises a display screen, a solid-state relay and a control switch, all of which are electrically connected with the filter assembly and the control unit of the pretreatment part.

[0027] The display screen and the control switch are arranged on the top of the cabinet.

[0028] The multifunctional high-temperature gel permeation instrument pretreatment device provided by the utility model has at least the following beneficial effects compared with the prior art:

[0029] The filter assembly and the pretreatment part are arranged simultaneously, the filter assembly can realize negative pressure filtration of sample reagents, the pretreatment part can heat and pretreat the sample reagents, the pretreatment demand of positive pressure filtration of the sample reagents is met, and the sample reagents can be subjected to positive pressure filtration only by means of the pipette filtration device, that is, the filtration demand of different types of sample reagents is met simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0031] Figure 1 The structural schematic view of the filter assembly provided by the utility model is shown in the figure.

[0032] Figure 2 The structural schematic view of the pretreatment equipment provided by the utility model is shown in the figure.

[0033] Figure 3 The structural schematic view of the internal structure of the pretreatment equipment provided by the utility model is shown in the figure.

[0034] Figure 4 The structural schematic view of the local structure of the pretreatment equipment provided by the utility model is shown in the figure.

[0035] Figure 5 The structural schematic view of the multifunctional high-temperature gel permeation instrument pretreatment device provided by the utility model is shown in the figure.

[0036] Figure 6 The structural schematic view of the multifunctional high-temperature gel permeation instrument pretreatment device provided by the utility model is shown in the figure.

[0037] Figure 7 The utility model provides a plan view of multifunctional high temperature gel permeation appearance front processing device provided by the utility model,

[0038] Figure 8 The utility model provides Figure 7 The section view of A-A in it,

[0039] Figure 9 The utility model provides Figure 7 The section view of B-B in it,

[0040] Figure 10 The structure schematic diagram of pipette filter device provided by the utility model,

[0041] Figure 11 The section view of pipette filter device provided by the utility model.

[0042] In the drawing,

[0043] 1, casing, 2, temperature controller, 3, vacuum pump, 4, solid state relay, 5, display screen, 6, control switch, 7, waste liquid discharge port, 8, waste liquid discharge pipe, 9, valve, 10, connecting portion, 11, suction filter assembly, 12, first installation port, 13, second installation port, 14, negative pressure channel, 15, filter assembly, 16, first heating assembly, 17, bottom plate, 18, liquid storage cavity, 19, first interface, 20, negative pressure puncture needle, 21, containing cavity, 22, heating shield, 23, pretreatment part, 24, first placement site, 25, second placement site, 26, third placement site, 27, second heating assembly, 28, heat insulation plate, 29, pipette filter device, 30, filter body, 31, pipette channel, 32, pressurizing device. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0045] The core of the utility model is to provide a multifunctional high temperature gel permeation appearance front processing device, which integrates suction filter assembly and pretreatment part, and meets the filtering requirements of different types of polymer reagents.

[0046] Embodiment one:

[0047] Please refer to Figures 1-11 A multifunctional high temperature gel permeation appearance front processing device comprises:

[0048] The suction filtration assembly 11 comprises a vacuum pump 3, a negative pressure channel 14 for connecting the vacuum pump 3 and the liquid collection container, and a containing cavity 21 for containing the filter assembly 15 which is connected to the liquid collection container and the sample container;

[0049] The pre-treatment part 23 comprises a plurality of placement positions for placing the liquid collection container and / or the sample container, and a second heating assembly 27 for heating the liquid collection container and / or the sample container in the placement positions.

[0050] The suction filtration assembly 11 and the pre-treatment part 23 are arranged simultaneously, wherein the filter assembly 15 is fixedly installed in the containing cavity 21 of the suction filtration assembly 11, the sample container and the liquid collection container are connected through the filter assembly 15, so that the sample reagent in the sample container can pass through the filter assembly 15 and enter the liquid collection container, at the same time, the suction filtration assembly 11 connects the vacuum pump 3 and the liquid collection container through the negative pressure channel 14, so that a negative pressure is formed in the liquid collection container, thereby accelerating the sample reagent in the sample container to pass through the filter assembly 15 and enter the liquid collection container, i.e. improving the efficiency of the negative pressure filtration.

[0051] In actual use, the end of the negative pressure channel 14 and the two ends of the filter assembly 15 are provided with puncture needles for puncturing the self-sealing covers of the sample container and the liquid collection container, so as to make the corresponding channels communicate with the containers, and ensure the sealing performance of the corresponding containers after communication.

[0052] At the same time, the pre-treatment part 23 integrates a plurality of placement positions, which can accommodate a plurality of sample containers and liquid collection containers simultaneously, and integrates a second heating assembly 27, which can heat and pre-treat the sample reagent in the sample container in the placement position, so that the temperature of the sample reagent meets the requirements of the positive pressure filtration. At this time, only the pipette filtration device 29 is needed to apply positive pressure to the sample container, so that the sample reagent in the sample container is filtered and flows into the liquid collection container under the action of the pipette filtration device 29, thereby completing the positive pressure filtration.

[0053] That is, by simultaneously designing the suction filtration assembly 11 and the pre-treatment part 23, the filtration requirements of different types of sample reagents can be met.

[0054] In some embodiments, the multifunctional high-temperature gel permeation instrument pre-treatment device further comprises a machine shell 1;

[0055] The suction filtration assembly 11 is arranged in a cantilever form on the front surface of the machine shell 1, the containing cavity 21 vertically penetrates the suction filtration assembly 11, and the top end and the bottom end of the containing cavity 21 are respectively provided with a first mounting port 12 and a second mounting port 13, the first mounting port 12 is used for fixedly installing the sample container, and the second mounting port 13 is used for fixedly installing the liquid collection container;

[0056] The top of the shell 1 is provided with a control assembly, which is electrically connected with the control unit of the suction filtration assembly 11.

[0057] The suction filtration assembly 11 is installed in a cantilevered form on the front surface of the shell 1 through the connecting part 10, and the accommodation cavity 21 vertically penetrates the suction filtration assembly 11, and the first mounting port 12 for fixing the installation of the sample container is arranged at the top end, and the second mounting port 13 for fixing the installation of the liquid collecting container is arranged at the bottom end. During filtration, the sample reagent in the sample container can pass through the filter assembly 15 into the liquid collecting container under the action of gravity, thereby improving the filtration speed.

[0058] In some embodiments, by integrating a positive pressure channel and a positive pressure pump in the suction filtration assembly 11, the positive pressure pump and the sample container are connected through the positive pressure channel. During filtration, the sample container is connected to the positive pressure, so that the sample in the sample container can pass through the filter assembly 15 into the liquid collecting container under the action of positive pressure, thereby achieving the above-mentioned function.

[0059] At the same time, the control assembly is arranged on the top of the shell 1, which is convenient for the operation of the suction filtration assembly 11 and improves the user experience.

[0060] In some embodiments, the vacuum pump 3, the solid-state relay 4 for controlling the on-off of the vacuum pump 3, and the temperature controller 2 for temperature control in the suction filtration assembly 11 are arranged inside the shell 1, which improves the neatness of the equipment, and the heat dissipation holes are arranged on the side wall of the shell 1, which is helpful to realize the heat dissipation of the many devices inside the shell 1.

[0061] In some embodiments, the suction filtration assembly 11 further comprises a heating shield 22 for overall heating of the suction filtration assembly 11.

[0062] By arranging the heating shield 22 outside the suction filtration assembly 11, the overall inside of the suction filtration assembly 11 is heated by the heat generated by the heating shield 22, which ensures the overall problem of the suction filtration assembly 11 and helps to reduce the viscosity of the sample reagent during filtration, avoids the phenomenon of sample reagent sticking due to too low temperature, so that the sample reagent can quickly pass through the filter assembly 15, thereby improving the filtration speed.

[0063] In some embodiments, the suction filtration assembly 11 further comprises a first heating assembly 16, and the first heating assembly 16 wraps the accommodation cavity 21 for heating the filter assembly 15 installed in the accommodation cavity 21.

[0064] The annular first heating assembly 16, such as a heating ring or a heating sleeve, is arranged to wrap and heat the accommodation cavity 21, and the filter assembly 15 in the accommodation cavity 21 is precisely heated, so that the temperature of the filter assembly 15 is further matched with the required temperature of the sample reagent, which effectively avoids the crystallization of the sample reagent in the filter assembly 15 and promotes the separation of the sample reagent and impurities in the filter assembly 15.

[0065] In some embodiments, the heating shield 22 and the first heating assembly 16 are synchronously arranged, the heating shield 22 is used for overall temperature control of the filtration assembly 11, and the first heating assembly 16 is used for precise temperature control of the filtration assembly 15, so that the matching degree of the filtration assembly 15 temperature and the required temperature of the sample reagent is effectively improved, the filtration efficiency is improved, and the equipment energy consumption is reduced.

[0066] In some embodiments, the multifunctional high-temperature gel permeation instrument pretreatment device further comprises a cabinet 1 and a bottom plate 17 fixedly connected to the bottom of the front surface of the cabinet 1.

[0067] The pretreatment part 23 is fixedly connected to the bottom plate 17.

[0068] The top of the cabinet 1 is provided with a control assembly electrically connected to the control unit of the pretreatment part 23.

[0069] The pretreatment part 23 is arranged on the front side of the cabinet 1 and is fixed to the bottom plate 17 on the front side of the cabinet 1, and the control assembly is arranged on the top of the cabinet 1, which is convenient for operation.

[0070] The pretreatment part 23 and the filtration assembly 11 are both arranged on the front side of the cabinet 1 and do not interfere with each other, that is, the user can simultaneously perform positive pressure filtration on the sample reagent through the pretreatment part 23 and negative pressure filtration on the sample reagent through the filtration assembly 11, without interference, to realize multi-station sample processing.

[0071] In some embodiments, the pretreatment part 23 comprises a reagent bottle support, a placement position is arranged on the reagent bottle support, a second heating assembly 27 is arranged at the bottom of the reagent bottle support, and a heat insulation plate 28 is arranged between the second heating assembly 27 and the bottom plate 17.

[0072] The pretreatment part 23 comprises a reagent bottle support and a pipette rack, wherein the reagent bottle support is provided with a first placement position 24 and a second placement position 25 for placing a liquid collecting container and a sample container respectively, and a second heating assembly 27 such as a heating plate is arranged below the reagent bottle support to heat the sample container and the liquid collecting container in the reagent bottle support, so that the temperature of the sample reagent in the sample container reaches a preset temperature, at which time the sample reagent in the sample container can be filtered and transferred to the liquid collecting container through a liquid transfer and filtration device 29 to complete the positive pressure filtration of the sample reagent.

[0073] Meanwhile, a heat insulation plate 28 such as a ceramic heat insulation plate is arranged below the second heating assembly 27 to effectively insulate the downward heat transfer of the second heating assembly 27 and avoid scalding the workbench.

[0074] In some embodiments, the pretreatment part 23 further comprises a liquid transfer and filtration device 29 for liquid transfer and filtration of the sample in the sample container and the liquid collecting container in the placement position.

[0075] The placing position comprises a third placing position 26 for placing the pipette filtering device 29.

[0076] The pretreatment part 23 comprises a pipette placing rack, and the pipette placing rack is provided with the third placing position 26 for placing the pipette filtering device 29. When the pipette filtering device 29 is not used to perform the positive pressure filtration on the sample reagent, the pipette filtering device 29 can be selectively placed at the third placing position 26, so as to avoid damage of the pipette filtering device 29.

[0077] In some embodiments, the pipette filtering device 29 comprises a pipette channel 31 and a pressurizing device 32.

[0078] The pressurizing device 32 is used to apply positive pressure to the sample container.

[0079] The pipette channel 31 is used to communicate the sample container and the liquid collecting container, and the filter body 30 is arranged in the pipette channel 31 and used to filter the sample flowing through the pipette channel 31.

[0080] The pipette filtering device 29 is provided with the pressurizing device 32 and the pipette channel 31. In actual use, the end of the pressurizing device 32 and the two ends of the pipette channel 31 are provided with puncture needles, which are used to puncture the self-sealing cover bodies of the sample container and the liquid collecting container, so that the pressurizing device 32 can pressurize the sample container, and the sample reagent in the sample container can be transferred to the liquid collecting container through the pipette channel 31 under the action of the positive pressure. In the process, the sample reagent is filtered by the filter body 30 when flowing through the pipette channel 31, that is, the positive pressure filtration of the sample reagent is completed.

[0081] In some embodiments, the pipette filtering device 29 comprises a slidingly installed drawer, and the sliding direction of the drawer is perpendicular to the center line of the pipette channel 31.

[0082] The filter body 30 is fixedly installed in the drawer.

[0083] The filter body 30 is installed in the form of the drawer, so that the replacement and maintenance of the filter body 30 are facilitated, and the convenience of use is improved.

[0084] In some embodiments, the control assembly comprises a display screen 5, a solid-state relay 4 and a control switch 6, and the display screen 5, the solid-state relay 4 and the control switch 6 are electrically connected with the control unit of the pipette filtering assembly 11 and the pretreatment part 23.

[0085] The display screen 5 and the control switch 6 are arranged on the top of the casing 1.

[0086] An inclined panel is arranged between the top of the casing 1 and the front panel, and the display screen 5 and the control switch 6 are arranged on the inclined panel, so that the user can observe the display data of the display screen 5 and operate the control switch 6, and the convenience of use is improved.

[0087] At the same time, the solid state relay 4 is arranged in the shell 1 to control the on-off of the vacuum pump 3, so that the weak current controls the strong current, and the safety of operation and control is improved.

[0088] Embodiment two:

[0089] Please refer to Figures 1-11 A filter assembly 15 comprises:

[0090] The shell is a cylindrical structure, and the inner cavity of the shell is filled with filler;

[0091] At least two puncture needles are arranged at both ends of the shell and communicate with the inner cavity of the shell.

[0092] The shell is filled with filler, the surface adsorption capacity of the filler is used to adsorb impurities in the polymer reagent flowing through the surface of the filler, and the traditional metal filter sheet relies on the gap to filter the polymer reagent, so that the filtering efficiency caused by the gap blockage is avoided. At the same time, the shell with a cylindrical structure effectively increases the filling amount of the internal filler, and the puncture needles are arranged at both ends of the shell, so that the liquid inlet and the liquid outlet of the filter assembly 15 are located at both ends of the shell, so that the polymer reagent needs to pass through the shell along the axial direction, increasing the contact probability of the polymer reagent and the filler, improving the adsorption rate of impurities in the polymer reagent, and further improving the removal rate of impurities in the polymer reagent.

[0093] Moreover, the puncture needle structure design at both ends of the filter assembly 15 can realize rapid conduction with the container, and ensure the sealing performance of the connection position after conduction, so as to facilitate the auxiliary filtration under positive pressure or negative pressure, thereby increasing the filtering efficiency.

[0094] Embodiment three:

[0095] Reference Figures 1-11 A suction filter assembly 11 comprises:

[0096] The receiving cavity 21 is used for detachably mounting the above-mentioned filter assembly 15, and the receiving cavity 21 comprises a first mounting port 12 and a second mounting port 13. The first mounting port 12 is used for fixing a sample container, and the second mounting port 13 is used for fixing a liquid collecting container. When the sample container and the liquid collecting container are fixed with the receiving cavity 21, the puncture needles at both ends of the filter assembly 15 puncture and conduct the sample container and the liquid collecting container at the corresponding positions, respectively.

[0097] The negative pressure channel 14 is used for connecting with a negative pressure source at one end and conducting a negative pressure puncture needle 20 at the other end, and is used for puncturing and conducting the liquid collecting container fixed with the receiving cavity 21.

[0098] The filter assembly 15 is detachably installed in the accommodating cavity 21, facilitating replacement of the disposable filter assembly 15, and the first mounting port 12 and the second mounting port 13 are arranged at two ends of the accommodating cavity 21 to fix and install the sample container and the liquid collecting container, which helps to ensure the stability of the relative positions of the filter assembly 15, the sample container and the liquid collecting container during the filtration process.

[0099] Meanwhile, the negative pressure channel 14 is added to form a negative pressure in the liquid collecting container, and the negative pressure is used for adsorption to accelerate the passage of the polymer reagent through the filter assembly 15 and improve the filtration efficiency.

[0100] Meanwhile, the negative pressure channel 14 is designed with the negative pressure puncture needle 20 to be in communication with the liquid collecting container, which facilitates quick installation of the liquid collecting container and ensures the air tightness of the connection position of the liquid collecting container and the negative pressure channel 14 after installation.

[0101] In some embodiments, the accommodating cavity 21 is a vertical communication structure, and a limiting step is arranged inside to axially limit the filter assembly 15 when it is installed from top to bottom.

[0102] The limiting step is arranged in the accommodating cavity 21, and can abut against and limit the shell end of the filter assembly 15 when the filter assembly 15 is installed from the top of the accommodating cavity 21, and allows the shell end to pass through the puncture needle, so that the puncture needle is in communication with the lower liquid collecting container, thereby facilitating quick installation and replacement of the filter assembly 15 and ensuring that the filter assembly 15 has a stable installation position after replacement.

[0103] In some embodiments, the suction filtration assembly 11 further comprises a first heating assembly 16 arranged in the accommodating cavity 21 to heat the filter assembly 15.

[0104] The first heating assembly 16 is integrated in the accommodating cavity 21 to heat the filter assembly 15, so that the polymer reagent can increase the temperature and reduce the viscosity when passing through the filter assembly 15, and the activity of the filler is improved to increase the adsorption efficiency of impurities and improve the removal rate of impurities in the polymer reagent.

[0105] In some embodiments, the first heating assembly 16 is a cylindrical structure, and when the filter assembly 15 is installed in the accommodating cavity 21, the first heating assembly 16 is wrapped outside the shell peripheral wall of the filter assembly 15.

[0106] The accommodating cavity 21 adopts a cylindrical structure, the filter assembly 15 is a cylindrical structure, and the first heating assembly 16 is a cylindrical structure and is integrated inside the accommodating cavity 21, so that when the filter assembly 15 is installed, the outer wall of the filter assembly 15 is in contact with the first heating assembly 16, thereby improving the heating effect.

[0107] In some embodiments, the suction filtration assembly 11 further comprises a liquid storage cavity 18 provided with a first interface 19 for communicating with a negative pressure source.

[0108] The negative pressure channel 14 is in communication with the liquid storage cavity 18 at an end away from the negative pressure puncture needle 20.

[0109] By adding the liquid storage cavity 18 between the negative pressure channel 14 and the negative pressure source, the waste liquid entering the negative pressure channel 14 can be collected in the liquid storage cavity 18, thereby avoiding damage to the equipment caused by the waste liquid entering the negative pressure source.

[0110] In some embodiments, the liquid storage cavity 18 further comprises a second interface which is openable and closable, and the second interface is arranged at a low position of the liquid storage cavity 18 and is used for discharging the accumulated liquid in the liquid storage cavity 18.

[0111] By arranging the second interface which is openable and closable at the low position of the liquid storage cavity 18, the accumulated liquid in the liquid storage cavity 18 can be directly discharged, and when the second interface is closed, the air tightness of the liquid storage cavity 18 can be ensured.

[0112] Meanwhile, the height of the first interface 19 is preferably higher than that of the second interface, thereby avoiding the accumulated liquid in the liquid storage cavity 18 from entering the negative pressure source through the first interface 19.

[0113] The side of the shell 1 is provided with a waste liquid discharge port 7, the liquid storage cavity 18 is communicated with the waste liquid discharge port 7 through a pipeline, and a waste liquid discharge pipe 8 with a valve 9 is additionally arranged at the waste liquid discharge port 7, thereby facilitating the discharge of the waste liquid.

[0114] In the description, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between each embodiment can be referred to each other.

[0115] The multifunctional high-temperature gel permeation instrument pretreatment device is described in detail above. In this paper, specific examples are applied to describe the principle and implementation mode of the utility model, and the description of the above embodiments is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A multi-functional high temperature gel permeation instrument pretreatment device, characterized in that, The application relates to a sample pretreatment device. The sample pretreatment device comprises a vacuum filtration assembly (11), a pretreatment part (23) and a machine shell (1). The vacuum filtration assembly (11) comprises a vacuum pump (3), a negative pressure channel (14) and a containing cavity (21), the negative pressure channel (14) is used for connecting the vacuum pump (3) and a liquid collecting container, and the containing cavity (21) is used for containing a filter assembly (15) which is connected with the liquid collecting container and a sample container.

2. The multi-functional high temperature gel permeation instrument pretreatment device according to claim 1, characterized in that, The pretreatment part (23) comprises a plurality of placing positions and a second heating assembly (27), the placing positions are used for placing the liquid collecting container and / or the sample container, and the second heating assembly (27) is used for heating the liquid collecting container and / or the sample container in the placing positions. The machine shell (1) is further provided. The vacuum filtration assembly (11) is arranged on the front surface of the machine shell (1) in a cantilevered mode, the containing cavity (21) vertically penetrates the vacuum filtration assembly (11), the top end and the bottom end of the containing cavity (21) are respectively provided with a first mounting port (12) and a second mounting port (13), the first mounting port (12) is used for fixedly mounting the sample container, and the second mounting port (13) is used for fixedly mounting the liquid collecting container.

3. The multi-functional high temperature gel permeation instrument pre-treatment device according to claim 1, characterized in that, The top of the machine shell (1) is provided with a control assembly which is electrically connected with the control unit of the vacuum filtration assembly (11).

4. The multi-functional high temperature gel permeation instrument pretreatment device according to claim 1, characterized in that, The vacuum filtration assembly (11) further comprises a heating shroud (22) which is used for overall heating of the vacuum filtration assembly (11).

5. The multi-functional high temperature gel permeation instrument pre-treatment device according to claim 1, characterized in that, The vacuum filtration assembly (11) further comprises a first heating assembly (16) which wraps the containing cavity (21) and is used for heating the filter assembly (15) mounted in the containing cavity (21). The machine shell (1) and a bottom plate (17) are further provided, the bottom plate (17) is fixedly connected with the bottom of the front surface of the machine shell (1). The pretreatment part (23) is fixedly connected with the bottom plate (17).

6. The multi-functional high temperature gel permeation instrument pre-treatment device according to claim 5, characterized in that, The top of the machine shell (1) is provided with a control assembly which is electrically connected with the control unit of the pretreatment part (23).

7. The multi-functional high temperature gel permeation instrument pre-treatment device according to claim 1, characterized in that, The pretreatment part (23) comprises a reagent bottle support, the placing positions are arranged on the reagent bottle support, the second heating assembly (27) is arranged on the bottom of the reagent bottle support, and a heat insulation plate (28) is arranged between the second heating assembly (27) and the bottom plate (17). The pretreatment part (23) further comprises a pipetting and filtering device (29) which is used for pipetting and filtering of samples in the sample container and the liquid collecting container in the placing positions.

8. The multi-functional high temperature gel permeation instrument pre-treatment device according to claim 7, characterized in that, The placing positions comprise a third placing position (26) which is used for placing the pipetting and filtering device (29). The pipetting and filtering device (29) comprises a pipetting channel (31) and a pressurizing device (32). The pressurizing device (32) is used for applying positive pressure to the sample container.

9. The multi-functional high temperature gel permeation instrument pre-treatment device according to claim 8, characterized in that, The pipetting channel (31) is used for connecting the sample container and the liquid collecting container, and a filter body (30) is arranged in the pipetting channel (31) and is used for filtering samples flowing through the pipetting channel (31). The pipetting and filtering device (29) comprises a drawer which is slidably arranged, and the sliding direction of the drawer is perpendicular to the center line of the pipetting channel (31). The filter body (30) is fixedly arranged in the drawer.

10. The multi-functional high temperature gel permeation instrument pretreatment device according to claim 2 or 5, characterized in that, The control assembly comprises a display screen (5), a solid-state relay (4) and a control switch (6), all of which are electrically connected with the control unit of the filtration assembly (11) and the pretreatment part (23); The display screen (5) and the control switch (6) are arranged on the top of the shell (1).

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