Drawer type membrane desolventizing device

Abstract

The utility model discloses a drawer type membrane desolventizing device which comprises a shell, a heating module, a condensing module and a membrane desolventizing module. The shell comprises a drawer shell and a device shell, and the drawer shell and the device shell are connected through a detachable part; the heating module and the condensing module are arranged in the device shell; the membrane desolventizing module is arranged in the drawer shell; the membrane desolventizing module comprises a pipeline inlet, a semi-permeable membrane pipeline and a pipeline outlet which are connected in sequence. According to the membrane desolventizing device disclosed by the utility model, the membrane desolventizing module is arranged in the drawer shell, and the heating module and the condensing module are arranged in the device shell, so that the membrane desolventizing module can be disassembled to replace a semi-permeable membrane pipeline by pulling out the drawer shell when the semi-permeable membrane pipeline needs to be replaced; after replacement, only the drawer shell needs to be pushed in and fixed through the detachable part, operation is very easy and convenient, and meanwhile the problem that due to the fact that other modules are detached, air tightness is poor or the modules are damaged is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mass spectrometry detection, and particularly relates to a drawer-type membrane desolvation device. Background Art

[0002] In the prior art, before mass spectrometry detection of liquid samples, the membrane desolvation technology is generally used to improve the transmission efficiency of liquid samples and improve stability, so as to maximize the sensitivity of ICP and inductively coupled plasma mass spectrometry (ICP-MS). As Figure 1 shown, the membrane desolvation device atomizes the liquid sample into a heated cyclone spray chamber first, and then enters the condensation chamber to remove most of the solvent vapor, reducing the solvent load on the plasma. Figure 1 The device shown in

[0003] adopts two-stage desolvation (Peltier cooling and semi-permeable membrane pipeline), which greatly reduces oxides while improving the solvent removal rate, achieving the effect of desolvation and sensitivity enhancement. It can be easily connected to all current types of ICP-MS instruments, including quadrupole, high-resolution, multi-collector and time-of-flight systems. Figure 1 However, the semi-permeable membrane pipeline in the membrane desolvation device is a consumable item. After long-term use, problems such as blockage or damage will occur, affecting the effect and requiring timely replacement. However, in the existing membrane desolvation devices ( Utility Model Content

[0004] In view of this, the purpose of the present utility model is to provide a drawer-type membrane desolvation device to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present utility model provides a drawer-type membrane desolvation device, including:

[0006] A housing, the housing includes a drawer housing and a device housing, and the drawer housing and the device housing are connected through a detachable component;

[0007] A heating module, the heating module is arranged in the device housing;

[0008] A condensation module, the condensation module is arranged in the device housing, and the heating module is connected to the condensation module;

[0009] A membrane desolvation module is arranged inside the drawer housing.

[0010] The membrane desolvation module includes a pipeline inlet, a semi-permeable membrane pipeline, and a pipeline outlet that are connected in sequence. Both the pipeline inlet and the pipeline outlet are arranged on the contact surface between the drawer housing and the device housing, and the pipeline inlet and the pipeline outlet are respectively arranged at both ends of the contact surface.

[0011] Preferably, the semi-permeable membrane pipeline is spiral and has at least one turn.

[0012] Preferably, the detachable components include screws, buckles, and magnetic attractions.

[0013] Preferably, the semi-permeable membrane pipeline is an EPTFE semi-permeable membrane.

[0014] Preferably, a handle or a pull rod is arranged on the outer side of the drawer housing.

[0015] Preferably, a ventilation window is opened in the device housing near the condensation module.

[0016] Preferably, the membrane desolvation module further includes a heating rod. A window is opened on the contact surface, and the heating rod passes through the window and is arranged inside the semi-permeable membrane pipeline.

[0017] The beneficial effects of the present utility model are as follows:

[0018] In the membrane desolvation device of the present utility model, the membrane desolvation module is arranged inside the drawer housing, and the heating module and the condensation module are arranged inside the device housing. Thus, when it is necessary to replace the semi-permeable membrane pipeline, the membrane desolvation module can be disassembled by pulling out the drawer housing to replace the semi-permeable membrane pipeline. After replacement, only the drawer housing needs to be pushed in and fixed through the detachable components. The operation is very simple, and at the same time, the problem of poor airtightness or module damage caused by the disassembly of the remaining modules is avoided. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of a membrane desolvation device in the prior art;

[0021] Figures 2 to 6 It is a schematic diagram of the membrane desolvation device disclosed by the present utility model. Detailed Embodiments

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figures 2 to 6 shown, a drawer-type membrane desolvation device disclosed in this embodiment includes:

[0024] A housing 10, the housing 10 includes a drawer housing 11 and a device housing 12, and the drawer housing 11 and the device housing 12 are connected by a detachable component;

[0025] A heating module 21, the heating module 21 is arranged in the device housing 12;

[0026] A condensation module 22, the condensation module 22 is arranged in the device housing 12, and the heating module 21 is connected to the condensation module 22;

[0027] A membrane desolvation module 23, the membrane desolvation module 23 is arranged in the drawer housing 11;

[0028] As Figure 4 and Figure 5 shown, the membrane desolvation module 23 includes a first pipe port 231, a semi-permeable membrane pipeline 232 and a second pipe port 233 connected in sequence. Both the first pipe port 231 and the second pipe port 233 are arranged on the contact surface 24 between the drawer housing 11 and the device housing 12, and the first pipe port 231 and the second pipe port 233 are respectively arranged at both ends of the contact surface 24. The semi-permeable membrane pipeline 232 disclosed in the present utility model is a double-layer sleeve, that is, it includes an outer pipe and an inner pipe, wherein the radius of the outer pipe is greater than that of the inner pipe, and the inner pipe is arranged inside the outer pipe. Water vapor can enter the outer pipe from the inner pipe, but cannot enter the inner pipe from the outer pipe; in this embodiment, the first pipe port 231 includes a sample gas inlet with water vapor and an argon gas outlet with water vapor, and the second pipe port 233 includes a dry sample gas outlet and a dry argon gas inlet. The inner pipe is connected to the sample gas inlet with water vapor and the dry sample gas outlet in the first pipe port 231, and the outer pipe is connected to the argon gas outlet with water vapor and the dry argon gas inlet in the second pipe port 233. The gas flow directions of the inner pipe and the outer pipe are opposite, and the argon gas in the outer pipe contacted by the inner pipe sample at the outlet position is dry, so that the inner pipe sample is also dry when output, greatly increasing the signal sensitivity of subsequent mass spectrometry detection.

[0029] As Figure 4 and Figure 7As shown, the membrane desolvation module 23 further includes a heating rod 25. A window 241 is provided on the contact surface 24. The heating rod 25 passes through the window 241 and is arranged in the semi-permeable membrane pipeline 232, so as to further heat the semi-permeable membrane pipeline 232.

[0030] During actual use, the liquid sample is first atomized into a gas sample, and then enters the heating module 21 through the pipeline inlet 121 of the device housing 12. In the heating module 21, the water in the small droplets with the element to be measured is evaporated into water vapor by heating, and the element to be measured becomes a solid nano-aerosol. Then it enters the condensation module 22, where the water vapor in the outer tube is condensed into a liquid in the condensation module 22, and then enters the membrane desolvation module 23 through the pipeline inlet 231 respectively. In the membrane desolvation module 23, the heating rod 25 further heats the sample to make the residual water vapor in the gas sample continue to penetrate from the inner tube to the outer tube. Therefore, the atomized gas sample completes the two-stage desolvation effect under the cooperation of the semi-permeable membrane pipeline 232 and the condensation module 22. The desolvated sample enters the subsequent mass spectrometry detection device through the pipeline outlet 233.

[0031] In a preferred embodiment, the semi-permeable membrane pipeline 232 is spiral (such as the membrane desolvation module 23 shown Figure 1 ), and the number of turns is at least one. Preferably, the more turns of the spiral, the longer the path of the gas sample in the semi-permeable membrane pipeline 232. Therefore, the signal of the gas sample when entering the mass spectrometry detection device is better.

[0032] In a preferred embodiment, the device housing 12 is provided with a ventilation window 221 adjacent to the condensation module 22 to make the condensation effect better.

[0033] In a preferred embodiment, a handle 111 or a pull rod is provided on the outside of the drawer housing 11, which is more convenient for replacing the drawer housing.

[0034] As Figure 3 and Figure 4 shown, in this embodiment, the drawer housing 11 is designed in a right-angled shape, and the detachable part is a screw. In the best case, only 3 screws need to be removed at least when replacing (the positions of the 3 screws are the two sides and the top surface of the drawer housing 11) to take out the drawer housing 11. However, in other embodiments, the detachable part can also be a buckle, a magnetic attraction, etc., which can be disassembled and installed multiple times, and no limitation is made here.

[0035] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drawer-type membrane desolvation device, characterized in that: include: A housing, the housing comprising a drawer housing and a device housing, the drawer housing and the device housing being connected via a detachable component; A heating module, wherein the heating module is disposed in a device housing; A condensation module, wherein the condensation module is disposed in a device housing, and the heating module is connected to the condensation module; A membrane desolventizing module, wherein the membrane desolventizing module is arranged in the drawer housing; The membrane desolventizing module comprises a pipeline inlet, a semipermeable membrane pipeline and a pipeline outlet which are connected in sequence. The pipeline inlet and the pipeline outlet are both arranged on the contact surface between the drawer shell and the device shell, and the pipeline inlet and the pipeline outlet are respectively arranged at both ends of the contact surface.

2. The membrane desolvation device according to claim 1, characterized in that: The semipermeable membrane pipeline is spiral, and the number of turns is at least one.

3. The membrane desolvation device according to claim 1, characterized in that: The detachable parts include screws, buckles and magnets.

4. The membrane desolvation device according to claim 1, characterized in that: The semipermeable membrane pipeline is an EPTFE semipermeable membrane.

5. The membrane desolvation device according to claim 1, characterized in that: A handle or a pull rod is arranged on the outer side of the drawer housing.

6. The membrane desolvation device according to claim 1, characterized in that: The device housing is provided with a ventilation window adjacent to the condensation module.

7. The membrane desolvation device according to claim 1, characterized in that: The membrane desolventizing module also includes a heating rod. The contact surface is provided with a window. The heating rod passes through the window and is arranged in the semipermeable membrane pipeline.

Images