Membrane desolventizing device convenient to replace

Abstract

The utility model discloses a convenient-to-replace membrane desolventizing device which comprises a shell, the shell comprises a detachable part and a non-detachable part, and the detachable part and the non-detachable part are fixedly connected through a detachable part; the heating module is arranged on the non-detachable part; the condensation module is arranged on the non-detachable part; and the membrane desolventizing module is arranged on the detachable part. According to the membrane desolventizing device disclosed by the utility model, only the membrane desolventizing module is arranged on the detachable part, and the heating module and the condensing module are arranged on the non-detachable part, so that only the membrane desolventizing module can be detached when the semi-permeable membrane needs to be replaced, and the operation is very simple and convenient; and meanwhile, the problem of poor air tightness or module damage caused by disassembly of other modules is also avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of mass spectrometry detection, and in particular relates to a membrane desolvation device which is easy to replace. Background Art

[0002] In the prior art, before mass spectrometry detection of liquid samples, membrane desolvation technology is generally used to improve the transmission efficiency of liquid samples and improve stability, thereby maximizing the sensitivity of ICP and inductively coupled plasma mass spectrometry (ICP-MS). Figure 1 As shown in Figure 1, the membrane desolvation device reduces the solvent load on the plasma by first atomizing the liquid sample into a heated cyclonic spray chamber and then into a condensation chamber to remove most of the solvent vapor. Figure 1 The device shown in the figure uses a two-stage desolvation (Peltier cooling and semipermeable membrane line), which greatly reduces the oxides while improving the solvent removal rate, thus achieving the effect of desolvation and sensitivity enhancement. It can be easily connected to all types of current ICP-MS instruments, including quadrupole, high resolution, multi-collector and time-of-flight systems.

[0003] However, the semipermeable membrane pipeline in the membrane desolventizing device is a consumable item. It will be blocked or damaged after long-term use, affecting the effect and needs to be replaced in time. However, the membrane desolventizing device in the prior art ( Figure 1 ) are all heating module 21, condensation module 22 and membrane desolventizing module 23 are connected in sequence and integrated with the shell, and it is quite difficult to remove and replace any of the components. If it is necessary to replace the membrane desolventizing, the entire shell needs to be disassembled, and all the heating, condensation and other components need to be taken out before the semipermeable membrane can be replaced. In this process, due to the small and limited internal space, the operability is extremely poor, and it is very easy to damage other components of the entire system, and it also requires a lot of manpower and resources. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a membrane desolventizing device that is easy to replace, so as to solve the problems raised in the background technology.

[0005] To achieve the above object, the utility model provides a membrane desolventizing device that is easy to replace, comprising:

[0006] A housing, the housing comprising a detachable portion and a non-detachable portion, the detachable portion and the non-detachable portion being detachably fixedly connected;

[0007] A heating module, wherein the heating module is arranged on the non-detachable part;

[0008] A condensation module, wherein the condensation module is arranged in the non-detachable part;

[0009] A membrane desolventizing module, wherein the membrane desolventizing module is arranged on the detachable part;

[0010] The membrane desolvation module includes an air inlet, a semipermeable membrane pipeline and an air outlet which are connected in sequence. The air inlet is connected to the heating module air circuit and is arranged on the inner side of the detachable part. The air outlet is arranged on the outer side of the detachable part. The condensation module is arranged in the membrane desolvation module.

[0011] Preferably, the semipermeable membrane pipeline is spiral and surrounds the condensation module at least once.

[0012] Preferably, the detachable fixed connection includes a screw fixed connection, a snap fixed connection and a magnetic fixed connection.

[0013] Preferably, the semipermeable membrane pipeline is an EPTFE semipermeable membrane.

[0014] The beneficial effects of the utility model are:

[0015] The membrane desolventizing device of the utility model only arranges the membrane desolventizing module in the detachable part, and arranges the heating module and the condensation module in the non-detachable part, so that when the semipermeable membrane needs to be replaced, only the membrane desolventizing module can be removed, and the operation is very simple. At the same time, it also avoids the problem of poor air tightness or module damage caused by disassembly of other modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of a membrane desolvation device in the prior art;

[0018] Figures 2 to 4 It is a schematic diagram of the membrane desolvation device disclosed in the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 2As shown, a membrane desolventizing device that is easy to replace disclosed in this embodiment includes:

[0021] The housing 10 includes a detachable portion 11 and a non-detachable portion 12, wherein the detachable portion 11 and the non-detachable portion 12 are fixedly connected via a detachable component;

[0022] A heating module 21, the heating module 21 is arranged on the non-detachable part 12;

[0023] A condensation module 22, the condensation module 22 is arranged on the non-detachable part 12;

[0024] The membrane desolventizing module 23 is disposed on the detachable portion 11;

[0025] The membrane desolvation module 23 includes an air inlet 231, a semipermeable membrane pipeline 232 and an air outlet 233 connected in sequence. The air inlet 231 is connected to the air circuit of the heating module 21 and is arranged on the inner side of the detachable part 12. The air outlet 233 is arranged on the outer side of the detachable part 12. The condensation module 22 is arranged in the membrane desolvation module 23.

[0026] During actual use, the liquid sample is first atomized, then enters the heating module 21, and then enters the membrane desolvation module 23 through the air inlet 231. The atomized sample completes a two-stage desolvation effect with the cooperation of the semipermeable membrane pipeline 232 and the condensation module 22. The desolvated sample enters the subsequent mass spectrometry detection device through the air outlet 233.

[0027] In a preferred embodiment, the semipermeable membrane pipeline 232 is spiral (eg Figure 1 The membrane desolvation module 23 is shown, and surrounds the condensation module 22 at least once. Preferably, the more spiral turns there are, the better the signal when the sample enters the mass spectrometry detection device.

[0028] like Figure 3 and Figure 4 As shown, in the present embodiment, the detachable portion 11 is of right-angle design, and the detachable component is a screw 111. In the best case, at least three screws 111 need to be removed for replacement (the three screws 111 are located on the two side surfaces of the detachable portion 11 and the top surface of the detachable portion 11), and the detachable portion 11 can be taken out. However, in other embodiments, the detachable component may also be a component such as a snap-on or magnetic component that can be disassembled and installed multiple times, which is not limited here.

[0029] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A membrane desolventizing device that is easy to replace, It is characterized in that include: A housing, the housing comprising a detachable portion and a non-detachable portion, the detachable portion and the non-detachable portion being fixedly connected via a detachable component; A heating module, wherein the heating module is arranged on the non-detachable part; A condensation module, wherein the condensation module is arranged in the non-detachable part; A membrane desolventizing module, wherein the membrane desolventizing module is arranged on the detachable part; The membrane desolvation module includes an air inlet, a semipermeable membrane pipeline and an air outlet which are connected in sequence. The air inlet is connected to the heating module air circuit and is arranged on the inner side of the detachable part. The air outlet is arranged on the outer side of the detachable part. The condensation module is arranged in the membrane desolvation module.

2. The membrane desolvation device according to claim 1, It is characterized in that The semipermeable membrane pipeline is spiral and surrounds the condensation module at least once.

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

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

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