CN209929259U

CN209929259U - Ion migration tube of whole metallization coating

Info

Publication number: CN209929259U
Application number: CN201920667808.3U
Authority: CN
Inventors: 黄彬; 梁华良; 周朝涛
Original assignee: KUNMING DRAGONS LATITUDE OF ELECTRONIC SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: Kunming longchuanghui Technology Co.,Ltd.
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-10
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses an ion migration pipe of whole metallization coating, include ionization chamber subassembly and the ionic controller subassembly that sets up respectively at ionization district subassembly both ends, the ionic controller subassembly is connected between ionization district subassembly and drift district subassembly, ion detection subassembly is connected to the drift district subassembly other end, ceramic matrix and whole metallization coating by whole preparation, the technology of rethread precision polishing carries out the conducting ring preparation, new technology has been proposed to the preparation of ion migration pipe, especially, the multistage ceramic ring of having avoided using, the cost height that metal ring welding preparation brought, weak points such as preparation cycle length and easy damage have been reduced, the degree of difficulty of ion migration pipe preparation, cost and production cycle, bring fine economy and social for the instrument manufacture based on Ion Migration Spectrum (IMS) technique.

Description

Ion migration tube of whole metallization coating

Technical Field

The utility model relates to a gaseous material survey test instrument field is an ion migration pipe of whole metallization coating particularly.

Background

At present, an ion mobility tube based on an Ion Mobility Spectrometry (IMS) technology is formed by welding ceramic and metal at intervals, an ion control assembly is inserted in the middle of the ion mobility tube, and the ion mobility tube is complex in structure and particularly has the defects of high cost, long manufacturing period, easiness in damage and the like.

Disclosure of Invention

An object of the utility model is to the not enough of existence among the above-mentioned prior art, provide an ion migration pipe of whole metallization coating, proposed new technology to the preparation of ion migration pipe, especially avoided using multistage ceramic ring, weak points such as with high costs, preparation cycle length and easy damage that metal ring welding preparation brought, reduced the degree of difficulty, cost and the production cycle of ion migration pipe preparation, for the instrument manufacture based on Ion Mobility Spectrometry (IMS) technique brings fine economy and social.

The utility model discloses a following technical scheme realizes:

an ion transfer tube for integral metallization coating comprises an ionization chamber component and an ion controller component which are respectively arranged at two ends of an ionization region component, wherein the ion controller component is connected between the ionization region component and a drift region component, and the other end of the drift region component is connected with an ion detection component;

the ionization chamber assembly comprises an ionization chamber main body and an ionization chamber circuit board, wherein two holes for placing high-voltage electrodes are formed in the ionization chamber main body along the axial direction, and the ionization chamber circuit board is connected with the ionization chamber main body through a sealing gasket;

the ionization region assembly and the drift region assembly are respectively composed of two ceramic tubes which are integrally metalized, two ends of each ceramic tube are connected with a metal flange, annular metalized electrode rings with equal distances are arranged on the ceramic tubes, and the electrode rings are led out through the wire passing holes and connected with an external circuit;

the ion controller assembly comprises a connecting piece main body, the connecting piece main body is connected with a parallel grid mesh formed by staggered arrangement of front grid electrodes and rear grid electrodes through a sealing gasket, and an insulating gasket is arranged between the front grid electrodes and the rear grid electrodes;

the ion detection assembly comprises a connecting piece main body, a shielding electrode, an insulating pad, an ion receiving amplification circuit board and an amplifier end cover, wherein the connecting piece main body is sequentially connected with the sealing pad, the shielding electrode, the insulating pad, the ion receiving amplification circuit board and the amplifier end cover.

Preferably, in the ionization region assembly, the metal flange plate at the left end of the ceramic tube is connected with the ionization chamber main body through a sealing gasket, the metal flange plate at the right end of the ceramic tube is connected with the connecting piece main body of the ion controller assembly through a sealing gasket, and holes for connecting the screws are symmetrically formed in the metal flange plates at the two ends of the ceramic tube.

Preferably, in the drift region component, the metal flange at the left end of the ceramic tube of the overall metallized coating is connected with the rear gate electrode of the ion controller component through a sealing gasket, the metal flange at the right end of the ceramic tube is connected with the connecting piece main body of the ion detection component through a sealing gasket, and holes for screw connection are symmetrically formed in the metal flanges at the two ends of the ceramic tube.

Preferably, the connecting piece main body and the ionization chamber main body are made of PEEK materials and are formed through machining, 16 assembling screw holes are formed, and the thickness is controlled to be 8-15 mm.

Preferably, sealed the pad adopts the polytetrafluoroethylene thin slice to pass through mould stamping forming, insulating pad adopts the PEEK material to pass through mould stamping forming, and thickness all controls at 0.1-0.3 mm.

Preferably, the thickness of the metal flange plate is controlled to be 2.5-3.2 mm.

Preferably, the inner diameter of the ceramic tube is 24mm, and the outer diameter of the ceramic tube is 30 mm; the ionization area is 8 sections of electrode rings, and the drift area is 14 sections of electrode rings.

Preferably, two ceramic tubes in the ionization region and the drift region are assembled in a staggered mode at an angle of 22.5 degrees; the ionization chamber circuit board is staggered 22.5 from the ionization region^oAssembling; the ion receiving amplifying circuit board and the amplifier end cover are staggered with the drift region by 22.5^oAnd (6) assembling.

Preferably, the front gate electrode and the back gate electrode are made of stainless steel sheets through chemical corrosion, the number of grid wires of the front gate electrode is more than 1 that of grid wires of the back gate electrode, and when the two sheets are overlapped, an ion control grid with double density can be formed uniformly.

The utility model discloses by the ceramic base member and the whole metallized coating film of whole preparation, the accurate technology of polishing of rethread carries out the conducting ring preparation, and the metallized coating of conducting ring is even, easy control precision.

The ceramic tube is formed by a ceramic manufacturing process through a die, the wire passing holes are reserved, then dewaxing and firing are carried out to manufacture a ceramic tube base body, and the inner wall, two end faces and the wire passing holes of the ceramic tube base body are metalized through a ceramic metallization process to enable the inner wall of the ceramic tube and the metalized layers of the inner walls of the wire passing holes to be mutually communicated; and grinding the unnecessary metalized layer on the inner wall by a precision grinding machine to form annular metalized electrode rings with equal distance, wherein the electrode rings are led out of the tube through the wire through holes and are used for being connected with an external circuit, two end faces are welded with flange plates, the wire through holes are welded with electrode lead-out wires, and the electrode lead-out wires pass through the lead holes to be connected with the electrode rings and keep the air tightness inside and outside the ceramic tube.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic diagram of an ionization region assembly or drift region assembly.

Fig. 3 is a schematic view of the structure of the metal flange.

Fig. 4 is a schematic view of a connecting body structure.

Fig. 5 is a schematic structural view of the ionization chamber body.

Fig. 6 is a schematic structural view of the rear gate electrode.

Fig. 7 is a schematic structural view of the front gate electrode.

Fig. 8 is a schematic view of the structure of the gasket.

Fig. 9 is a schematic structural view of the insulating pad.

In the figure: 100-ceramic tube, 101-metal flange, 102-screw connection hole, 103-electrode lead-out wire, 104-electrode ring, 105-sealing pad, 801-front gate electrode, 802-insulating pad, 803-rear gate electrode, 804-shielding electrode, 901-connector body, 902-ionization chamber body, 903-ionization chamber circuit board, 904-ion receiving amplification circuit board and 905-amplifier end cover.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and specific embodiments, and it is obvious that only some embodiments of the present invention are described below, and for those skilled in the art, other drawings and embodiments can be obtained according to these drawings and embodiments without any inventive work.

As shown in fig. 1, an ion mobility tube for integral metallization coating comprises an ionization chamber assembly and an ion controller assembly respectively arranged at two ends of an ionization region assembly, wherein the ion controller assembly is connected between the ionization region assembly and a drift region assembly, and the other end of the drift region assembly is connected with an ion detection assembly.

The ceramic tube 100 is connected at both ends with metal flanges 101. the metal flanges 101 are provided with holes 102 for screw connection, as shown in fig. 2-3. The electrode rings 104 on the integral metallized ceramic tube increase the strength of the ceramic substrate, the integral metallized coating improves the uniformity of the coating, and the obtained electrode rings 104 are processed by a numerical control precision grinder and have good consistency.

And assembling the ionization chamber assembly, the ionization region assembly, the ion controller assembly, the drift region assembly and the ion detection assembly to form a complete ion transfer tube.

As shown in fig. 4-5, the connecting body 901 and the ionization chamber body 902 are machined from PEEK material; the inner diameter of the connecting main body 901 is the same as that of the ion migration tube body of the integral metallized coating, and 16 mounting holes with threads are processed; two through holes are formed in the ionization chamber body 902 and used for placing high-voltage discharge electrodes, and 16 threaded mounting holes are also machined in the ionization chamber body; for connecting the left and right side components.

The metal flange plate 101 is provided with 8 assembling holes, the connecting main body 901 and the ionization chamber main body 902 are formed by PEEK (not limited to PEEK materials) through precision machining, the thickness is controlled to be 8-15mm, 16 assembling screw holes are arranged for connecting the migration tube body of the integral metalized coating of the ionization region and the drift region, and the two tube bodies are staggered by 22.5^o. The same ionization chamber circuit board 903 is offset from the ionization region by 22.5^oAssembling; ion receiving amplifying circuit board 904 amplifierEnd cap 905 offset from drift region by 22.5^oAnd (6) assembling.

As shown in fig. 6-7, the ion control assembly, which is formed by chemical processing of stainless metal sheet, has a parallel grid mesh, which is divided into a front grid electrode 801 and a back grid electrode 803, the number of grid wires of the front grid electrode 801 is more than 1 that of the back grid electrode 803, two pieces of ion control grid with even density doubled can be formed when overlapped, and an insulating pad 802 is added between the front grid electrode 801 and the back grid electrode 803 for insulation and sealing; the middle of the electrode is added with an insulating pad to form parallel quasi-planar electrodes after superposition, the electrode distance is 1mm, and the electrode distance is 0.5 mm.

As shown in fig. 8, the sealing pad 105 is formed by punching a material such as 0.1-0.3mm polytetrafluoroethylene film, fluororubber film, etc. with a die; as shown in FIG. 9, the insulating pad 802 is formed of a PEEK film having a thickness of 0.3-0.5 mm.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ion transfer tube for integral metallization coating is characterized by comprising an ionization chamber assembly and an ion controller assembly which are respectively arranged at two ends of an ionization region assembly, wherein the ion controller assembly is connected between the ionization region assembly and a drift region assembly, and the other end of the drift region assembly is connected with an ion detection assembly;

the ionization chamber component comprises an ionization chamber main body and an ionization chamber circuit board, and the ionization chamber circuit board and the ionization region are assembled in a staggered mode by 22.5 degrees; the ionization chamber main body is provided with two holes for placing high-voltage electrodes along the axial direction, and the ionization chamber circuit board is connected with the ionization chamber main body through a sealing gasket;

the ionization region assembly and the drift region assembly are respectively composed of two ceramic tubes with the inner diameter of 24mm and the outer diameter of 30mm of the whole metalized coating, two ends of each ceramic tube are connected with metal flanges, annular metalized electrode rings with equal distance are arranged on the ceramic tubes, and the annular metalized electrode rings are led out through wire passing holes to be connected with an external circuit;

the ionization region comprises 8 sections of electrode rings, and the drift region comprises 14 sections of electrode rings; the two ceramic tubes are assembled in a staggered manner by 22.5 degrees;

in the drift region component, a metal flange plate at the left end of an integrally metalized ceramic tube is connected with a rear gate electrode of an ion controller component through a sealing gasket, a metal flange plate at the right end of the ceramic tube is connected with a connecting piece main body of an ion detection component through a sealing gasket, and holes for screw connection are symmetrically formed in the metal flange plates at the two ends of the ceramic tube;

the ion detection assembly comprises a connecting piece main body, a shielding electrode, an insulating pad, an ion receiving amplification circuit board and an amplifier end cover, wherein the ion receiving amplification circuit board and the amplifier end cover are staggered with the drift region by 22.5^oAssembling; the connecting piece main body is sequentially connected with a sealing gasket, a shielding electrode, an insulating gasket, an ion receiving amplification circuit board and an amplifier end cover.

2. The ion transfer tube of claim 1, wherein the ionization region assembly comprises a ceramic tube having a metal flange at a left end connected to the ionization chamber body via a gasket, and a metal flange at a right end connected to the connecting member body of the ion controller assembly via a gasket, and the metal flanges at the two ends of the ceramic tube are symmetrically provided with holes for screw connection.

3. The ion transfer tube of claim 1, wherein the connector body and the ionization chamber body are formed by machining using PEEK material, and the thickness is controlled to 8-15 mm.

4. The ion transfer tube of claim 1, wherein the gasket is formed by stamping a teflon sheet through a die, the insulating gasket is formed by stamping a PEEK material through a die, and the thickness of the insulating gasket is controlled to be 0.1-0.3 mm.

5. The ion transfer tube of claim 1, wherein the thickness of said metal flange is controlled to be 2.5-3.2 mm.

6. The ion transfer tube of claim 1, wherein said front and back gate electrodes are made of stainless steel sheets by chemical etching, the number of wires of the front gate electrode is more than 1 that of the back gate electrode, and the two sheets are stacked to form a uniform ion control gate with double density.