Inductively coupled plasma mass spectrometry air exhaust butt joint pipe

Abstract

The utility model discloses an inductively coupled plasma mass spectrum exhaust butt joint pipe, which belongs to the technical field of plasma mass spectrum exhaust and comprises a waste gas exhaust pipe and a gas guide pipe, a lower connecting sleeve is sleeved on the outer side of the waste gas exhaust pipe, and an upper connecting sleeve is sleeved on the outer side of the gas guide pipe. According to the utility model, the lower connecting sleeve and the upper connecting sleeve are respectively sleeved on the outer sides of the waste gas discharge pipe and the gas guide pipe, and the annular air bags on the inner sides of the lower connecting sleeve and the upper connecting sleeve are inflated from the switch valve and the gas injection pipe through the external gas pump; the waste gas exhaust pipe and the lower connecting sleeve as well as the gas guide pipe and the upper connecting sleeve are sealed through expansion of the annular air bag, so that the waste gas exhaust pipe and the gas guide pipe are connected through the lower connecting sleeve, the telescopic air guide pipe and the upper connecting sleeve, and the situation that an inserting groove is formed in the exhaust pipeline for connection is avoided; and the practicability of the inductively coupled plasma mass spectrum exhaust butt joint pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plasma mass spectrum exhaust technology field more specifically, relate to a kind of inductively coupled plasma mass spectrum exhaust docking pipe. BACKGROUND

[0002] Inductively coupled plasma mass spectrometer is a kind of mass spectrometer for determining ultra-trace elements and isotope ratio. It is composed of plasma generator, atomizing chamber, torch pipe, quadrupole mass spectrometer and a fast channel electron multiplier. Its working principle is that the solution sample is sent into the plasma light source by the atomizer, vaporized at high temperature, and ionized gas is dissociated. The ions collected by the copper or nickel sampling cone form a molecular beam under low vacuum pressure of about 133.322 Pa, and then enter the quadrupole mass spectrometer through a 1 to 2 mm diameter intercepting plate. After mass separation by the filter, it reaches the ion detector. According to the proportional relationship between the detector count and concentration, the content or isotope ratio of the element can be measured. The top of the general inductively coupled plasma mass spectrometer is provided with a waste gas exhaust port.

[0003] After searching, the utility model patent with publication number CN214041242U discloses an inductively coupled plasma mass spectrometer exhaust docking pipe, which includes an exhaust main pipe, a fixed connection pipe fixedly connected to the outside of the exhaust main pipe, a pressure-independent constant air volume valve fixedly connected to the outside of the fixed connection pipe, a ceiling fixedly connected to the lower end of the exhaust main pipe, a first branch pipe and a second branch pipe fixedly connected to the lower end of the main pipe body from the outside to the inside, a plug-in pipe fixedly connected to the lower end of the stainless steel pipe and the connecting hose, and a plug-in block fixedly connected to the lower end of the plug-in pipe. An installation spring is fixedly connected inside the installation slot. The inductively coupled plasma mass spectrometer exhaust docking pipe is a set of integrated device, which uses mature materials and accessories without any technical risk, low cost, great benefit, reduces laboratory construction investment and operating cost, ensures good working environment in the laboratory and good operation of the equipment. However, the above-mentioned patent still has the following disadvantages: the exhaust pipe of the inductively coupled plasma mass spectrometer is mostly a circular pipe, which is not convenient to open the plug-in slot and positioning clamping hole on it, and the outer diameter of the exhaust pipe varies, which is not convenient to ensure that the plug-in pipe can be sealed and connected with the exhaust pipe. Therefore, we propose an inductively coupled plasma mass spectrometer exhaust docking pipe. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the utility model aims to provide an inductively coupled plasma mass spectrometer exhaust docking pipe.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] The utility model provides an inductively coupled plasma mass spectrometry exhaust docking pipe, including the exhaust pipe and the gas guide pipe, the outside of exhaust pipe is equipped with the lower connecting sleeve, the outside of gas guide pipe is equipped with the upper connecting sleeve, the top of upper connecting sleeve is provided with upper reinforced sealing mechanism, the bottom of lower connecting sleeve is provided with lower reinforced sealing mechanism, the bottom of upper connecting sleeve and the top of lower connecting sleeve are fixedly connected with telescopic air duct, the inner wall of lower connecting sleeve and upper connecting sleeve is fixedly connected with annular air bag, the side of two annular air bags is fixedly connected with gas injection pipe, and the end part of two gas injection pipes is fixedly sleeved to the outside of lower connecting sleeve, upper connecting sleeve and is fixedly installed with switch valve, the inner side of one annular air bag and the side of exhaust pipe are coincident, and the inner side of another annular air bag and the side of gas guide pipe are coincident.

[0007] As a preferred scheme of the utility model, the lower reinforced sealing mechanism comprises a lower rubber elastic tube fixedly connected to the bottom end of the lower connecting sleeve, the lower rubber elastic tube is sleeved on the outside of the exhaust pipe, a second elastic ring is fixedly connected to the outside of the bottom end of the lower rubber elastic tube, and the inner side of the bottom end of the lower rubber elastic tube is coincident with the outside of the exhaust pipe.

[0008] As a preferred scheme of the utility model, the upper reinforced sealing mechanism comprises an upper rubber elastic tube fixedly connected to the top end of the upper connecting sleeve, the upper rubber elastic tube is sleeved on the outside of the gas guide pipe, a first elastic ring is fixedly connected to the outside of the top end of the upper rubber elastic tube, and the inner side of the top end of the upper rubber elastic tube is coincident with the outside of the gas guide pipe.

[0009] As a preferred scheme of the utility model, the bottom end of the inner cavity of the upper connecting sleeve is fixedly connected with a tapered guide pipe, and the top end of the tapered guide pipe is movably sleeved in the inner cavity of the gas guide pipe.

[0010] As a preferred scheme of the utility model, the bottom end of the exhaust pipe is provided with an instrument top plate.

[0011] As a preferred scheme of the utility model, the telescopic air duct, the lower rubber elastic tube, the upper rubber elastic tube, the tapered guide pipe and the annular air bag are all made of high-temperature resistant material.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] (1) The utility model discloses a lower connecting sleeve and upper connecting sleeve are respectively covered in the outside of waste gas exhaust pipe and guide pipe, and the annular air bag in the inside of lower connecting sleeve and upper connecting sleeve is inflated from switch valve and gas injection pipe through the external air pump, and the expansion of annular air bag makes waste gas exhaust pipe and lower connecting sleeve, guide pipe and upper connecting sleeve seal, so as to connect waste gas exhaust pipe and guide pipe through lower connecting sleeve, telescopic air duct and upper connecting sleeve, avoid the connection of the plug-in slot on the exhaust duct, and the outer diameter of lower connecting sleeve and upper connecting sleeve is greater than the outer diameter of waste gas exhaust pipe and guide pipe, can realize the connection of waste gas exhaust pipe and guide pipe of different pipe diameter, improve the practicability of the inductively coupled plasma mass spectrometry exhaust docking pipe.

[0014] (2) The utility model discloses a lower rubber elastic pipe and second elastic ring are covered in the outside of waste gas exhaust pipe, realize the secondary sealing between waste gas exhaust pipe and lower connecting sleeve, and the upper rubber elastic pipe and first elastic ring are covered in the outside of guide pipe, realize the secondary sealing between guide pipe and upper connecting sleeve, guarantee that the waste gas in waste gas exhaust pipe can only be introduced into guide pipe from lower connecting sleeve, telescopic air duct and conical guide pipe and be discharged, improve the working quality of the inductively coupled plasma mass spectrometry exhaust docking pipe. DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the section view schematic diagram of the utility model;

[0017] Figure 3 It is the structure schematic diagram of telescopic air duct of the utility model;

[0018] Figure 4 It is the structure schematic diagram of annular air bag of the utility model.

[0019] Mark explanation in drawing:

[0020] 1, waste gas exhaust pipe;2, guide pipe;3, lower connecting sleeve;4, upper connecting sleeve;5, telescopic air duct;6, upper reinforcing sealing mechanism;7, lower reinforcing sealing mechanism;8, annular air bag;9, gas injection pipe;10, switch valve;11, upper rubber elastic pipe;12, first elastic ring;13, lower rubber elastic pipe;14, second elastic ring;15, conical guide pipe;16, instrument top plate. Specific implementation

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

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example:

[0025] Please see Figures 1-4 An inductively coupled plasma mass spectrometry exhaust pipe includes an exhaust pipe 1 and a guide pipe 2. A lower connecting sleeve 3 is fitted on the outer side of the exhaust pipe 1, and an upper connecting sleeve 4 is fitted on the outer side of the guide pipe 2. An upper reinforcing sealing mechanism 6 is provided at the top of the upper connecting sleeve 4, and a lower reinforcing sealing mechanism 7 is provided at the bottom of the lower connecting sleeve 3. A telescopic guide pipe 5 is fixedly connected between the bottom end of the upper connecting sleeve 4 and the top end of the lower connecting sleeve 3. Annular airbags 8 are fixedly connected to the inner walls of both the lower connecting sleeve 3 and the upper connecting sleeve 4. Injection pipes 9 are fixedly connected to the sides of both annular airbags 8. The ends of the two injection pipes 9 are respectively fixedly sleeved to the outside of the lower connecting sleeve 3 and the upper connecting sleeve 4 and fixedly installed with switch valves 10. The inner side of one annular airbag 8 is in contact with the side of the exhaust pipe 1, and the inner side of the other annular airbag 8 is in contact with the side of the guide pipe 2.

[0026] In this embodiment, the exhaust gas from the inductively coupled plasma mass spectrometer is discharged through the exhaust pipe 1, and the top end of the gas guide pipe 2 is connected to the exhaust system.

[0027] Specifically, please refer to Figures 1 to 3 The lower sealing reinforcing mechanism 7 comprises a lower rubber elastic tube 13 fixedly connected to the bottom end of the lower connecting sleeve 3, the lower rubber elastic tube 13 is sleeved outside the exhaust gas discharge pipe 1, the outer side of the bottom end of the lower rubber elastic tube 13 is fixedly connected with a second elastic ring 14, and the inner side of the bottom end of the lower rubber elastic tube 13 is in abutment with the outer side of the exhaust gas discharge pipe 1.

[0028] In the embodiment, the inner side of the lower rubber elastic tube 13 is in abutment with the side of the exhaust gas discharge pipe 1 by the elastic force of the lower rubber elastic tube 13 itself, and the abutment between the lower rubber elastic tube 13 and the exhaust gas discharge pipe 1 is reinforced by the second elastic ring 14, so that the sealing property is ensured.

[0029] Specifically, please refer to Figures 1 to 3 The upper sealing reinforcing mechanism 6 comprises an upper rubber elastic tube 11 fixedly connected to the top end of the upper connecting sleeve 4, the upper rubber elastic tube 11 is sleeved outside the air guide pipe 2, the outer side of the top end of the upper rubber elastic tube 11 is fixedly connected with a first elastic ring 12, and the inner side of the top end of the upper rubber elastic tube 11 is in abutment with the outer side of the air guide pipe 2.

[0030] In the embodiment, the inner side of the upper rubber elastic tube 11 is in abutment with the side of the air guide pipe 2 by the elastic force of the upper rubber elastic tube 11 itself, and the abutment between the upper rubber elastic tube 11 and the air guide pipe 2 is reinforced by the first elastic ring 12, so that the sealing property is ensured.

[0031] Specifically, please refer to Figure 2 The bottom end of the inner cavity of the upper connecting sleeve 4 is fixedly connected with a tapered guide pipe 15, and the top end of the tapered guide pipe 15 is movably sleeved into the inner cavity of the air guide pipe 2.

[0032] In the embodiment, all the gas in the telescopic air guide pipe 5 is guided into the air guide pipe 2 through the tapered guide pipe 15, so that the gas is discharged by the air guide pipe 2.

[0033] Specifically, please refer to Figure 2 The bottom end of the exhaust gas discharge pipe 1 is provided with an instrument top plate 16.

[0034] Specifically, please refer to Figures 1 to 3 The telescopic air guide pipe 5, the lower rubber elastic tube 13, the upper rubber elastic tube 11, the tapered guide pipe 15 and the annular air bag 8 are all made of high-temperature-resistant materials.

[0035] In the embodiment, the influence of the high-temperature gas discharged from the exhaust gas discharge pipe 1 on the telescopic air guide pipe 5, the lower rubber elastic tube 13, the upper rubber elastic tube 11, the tapered guide pipe 15 and the annular air bag 8 is avoided.

[0036] Working principle: when the waste gas exhaust pipe 1 at the top of the inductively coupled plasma mass spectrometer and the gas guide pipe 2 in the exhaust system are connected, first pull the lower rubber elastic pipe 13 and the second elastic ring 14 outward with both hands, so that the lower rubber elastic pipe 13 and the second elastic ring 14 are sleeved outside the waste gas exhaust pipe 1, and at the same time, the lower connecting sleeve 3 is sleeved outside the waste gas exhaust pipe 1, at this time, the pulling of the lower rubber elastic pipe 13 and the second elastic ring 14 is released, the inner side surface of the lower rubber elastic pipe 13 is attached to the outer side surface of the waste gas exhaust pipe 1 by the elastic force of the lower rubber elastic pipe 13 and the second elastic ring 14, then pull the upper rubber elastic pipe 11 and the first elastic ring 12 outward with both hands, so that the upper rubber elastic pipe 11 and the first elastic ring 12 are sleeved outside the gas guide pipe 2, and at the same time, the upper connecting sleeve 4 is sleeved outside the gas guide pipe 2, at this time, the pulling of the upper rubber elastic pipe 11 and the first elastic ring 12 is released, the inner side surface of the upper rubber elastic pipe 11 is attached to the outer side surface of the gas guide pipe 2 by the elastic force of the upper rubber elastic pipe 11 and the first elastic ring 12, in addition, at this time, the top end of the conical guide pipe 15 is inserted into the gas guide pipe 2, then the external air pump is connected to the end of the two switch valves 10 respectively, and the switch valves 10 are opened, the air pump is started to inflate the two annular air bags 8 from the switch valves 10 and the air injection pipe 9, so that the annular air bags 8 are inflated, the inner side surfaces of the two annular air bags 8 are attached to the outer side surfaces of the waste gas exhaust pipe 1 and the gas guide pipe 2 respectively, the sealing between the waste gas exhaust pipe 1 and the lower connecting sleeve 3 and the gas guide pipe 2 and the upper connecting sleeve 4 is realized, so that the connection between the waste gas exhaust pipe 1 and the gas guide pipe 2 is realized, finally, the waste gas in the waste gas exhaust pipe 1 is guided into the gas guide pipe 2 through the telescopic air guide pipe 5 and the conical guide pipe 15 and is discharged, that is, the connection between the waste gas exhaust pipe 1 and the gas guide pipe 2 is realized.

[0037] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An inductively coupled plasma mass spectrometry exhaust pipe, comprising an exhaust pipe (1) and a guide pipe (2), characterized in that: The exhaust pipe (1) is fitted with a lower connecting sleeve (3) on its outer side, and the air guide pipe (2) is fitted with an upper connecting sleeve (4) on its outer side. The upper connecting sleeve (4) is provided with an upper reinforcing sealing mechanism (6) at its top, and the lower connecting sleeve (3) is provided with a lower reinforcing sealing mechanism (7) at its bottom. A telescopic air guide pipe (5) is fixedly connected between the bottom end of the upper connecting sleeve (4) and the top end of the lower connecting sleeve (3). Both the lower connecting sleeve (3) and the upper connecting sleeve (4) are fixedly connected with annular airbags (8). Both annular airbags (8) are fixedly connected with air injection pipes (9) on their sides. The ends of the two air injection pipes (9) are respectively fixedly sleeved to the outside of the lower connecting sleeve (3) and the upper connecting sleeve (4) and fixedly installed with a switch valve (10). The inner side of one annular airbag (8) is in contact with the side of the exhaust pipe (1), and the inner side of the other annular airbag (8) is in contact with the side of the air guide pipe (2).

2. The inductively coupled plasma mass spectrometry exhaust pipe according to claim 1, characterized in that: The lower reinforcing sealing mechanism (7) includes a lower rubber elastic tube (13) fixedly connected to the bottom end of the lower connecting sleeve (3). The lower rubber elastic tube (13) is sleeved on the outside of the exhaust pipe (1). A second elastic ring (14) is fixedly connected to the outside of the bottom end of the lower rubber elastic tube (13). The inner side of the bottom end of the lower rubber elastic tube (13) is in contact with the outer side of the exhaust pipe (1).

3. The inductively coupled plasma mass spectrometry exhaust pipe according to claim 2, characterized in that: The upper reinforcing sealing mechanism (6) includes an upper rubber elastic tube (11) fixedly connected to the top of the upper connecting sleeve (4). The upper rubber elastic tube (11) is sleeved on the outside of the air guide tube (2). A first elastic ring (12) is fixedly connected to the outside of the top of the upper rubber elastic tube (11). The inner side of the top of the upper rubber elastic tube (11) is in contact with the outer side of the air guide tube (2).

4. The inductively coupled plasma mass spectrometry exhaust pipe according to claim 3, characterized in that: The bottom end of the inner cavity of the upper connecting sleeve (4) is fixedly connected to a tapered conduit (15), and the top end of the tapered conduit (15) is movably sleeved into the inner cavity of the air duct (2).

5. The inductively coupled plasma mass spectrometry exhaust pipe according to claim 1, characterized in that: The bottom end of the exhaust pipe (1) is provided with an instrument top plate (16).

6. The inductively coupled plasma mass spectrometry exhaust pipe according to claim 4, characterized in that: The telescopic air duct (5), lower rubber elastic tube (13), upper rubber elastic tube (11), conical duct (15), and annular airbag (8) are all made of high-temperature resistant materials.

Images