CN218995237U - Drift tube with flexible length adjustment made of PEEK and PCB - Google Patents

Abstract

The utility model relates to the technical field of test instruments, and discloses a drift tube which is manufactured by PEEK and a PCB and can flexibly adjust the length. The high-strength high-temperature-resistant drift tube has the advantages of high strength, strong vibration impact resistance, no influence of high-low temperature environments, good environmental adaptability, flexible adjustment of the whole length by increasing or reducing the insulating rings and the drift rings, long reduction of the number of rings, short increase of the number of rings, convenient debugging, no ceramic parts, no need of metallization, no need of special processes such as welding and the like, and great reduction of production difficulty, production cost and production period.

Description

Drift tube with flexible length adjustment made of PEEK and PCB

Technical Field

The utility model relates to the technical field of test instruments, in particular to a drift tube which is manufactured by PEEK and a PCB and can flexibly adjust the length.

Background

Ion Mobility Spectrometry (IMS) is an analytical technique for detecting and identifying different substances based on the mobility of gas-phase ions in weak electric fields, by performing ion separation characterization with the difference of ion mobility times. The drift tube is the most core component of the IMS detection instrument.

The existing drift tube has the defects of poor strength, incapability of tolerating strong vibration impact, poor environmental adaptability, relatively fixed overall length and inconvenient performance debugging, and the existing drift tube needs special processes such as metallization, welding and the like, and has the advantages of high production difficulty, high production cost and long production period, so that the drift tube with the length flexibly adjusted by PEEK and PCB manufacturing is provided by the person skilled in the art to solve the problems in the prior art.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a drift tube which is made of PEEK and a PCB and can flexibly adjust the length.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a but drift tube of flexible adjustment length is makeed with PEEK and PCB board, includes ionization chamber, signal detection room, ionization chamber and signal detection room are connected into an organic wholely through the screw rod of its four angles department to cover is equipped with a plurality of insulating ring and drift ring of crisscross stack on the screw rod between ionization chamber and signal detection room, and sets up the sealing washer between every insulating ring and drift ring.

Further, one end of the screw rod is in threaded connection with the ionization chamber, and the other end of the screw rod penetrates through holes corresponding to the four corners of the signal detection chamber and the gasket to be in threaded connection with the nut and the elastic gasket so as to form a whole.

Further, an ion gate is arranged on the screw rod between the ionization chamber and the signal detection chamber, so that an ionization region is formed between the ion gate and the ionization chamber, and a drift region is formed between the ion gate and the signal detection chamber.

Further, grooves are formed in the tops of the ionization chamber, the signal detection chamber, the insulating ring and the ion door, and first screw holes are formed in the bottoms of the grooves of the ionization chamber and the signal detection chamber respectively and used for installing a voltage division circuit board.

Further, the bleeder circuit board is established to the horizontal plate, and its middle interval is equipped with a plurality of through-holes and a second through-hole, and both ends are equipped with the second screw respectively, are equipped with the screw in the second screw, wherein: the first bulges at the top of the drift ring are clamped into the corresponding through holes of the voltage division circuit board, and the bulges at the top of the ion door are clamped into the second through holes of the voltage division circuit board.

Further, the insulating ring is made of PEEK, the screw rod is made of stainless steel, the drift ring is a gold-plated PCB, and the front side, the back side and the inner hole of the drift ring are coated with copper and then plated with gold.

The utility model has the following beneficial effects:

1. according to the utility model, a plurality of insulating rings and drift rings are stacked on four screws in a crossing way, a sealing ring is arranged on the middle of each insulating ring, one end of each screw is in threaded connection with the ionization chamber, the other end of each screw passes through the signal detection chamber and the corresponding through hole of each gasket to be in threaded connection with the nut and the elastic washer, so that the drift tube can be manufactured, the manufactured drift tube has high strength, can resist strong vibration impact, is tightly pressed and fixed by the screws, the nuts and the elastic washers, is not influenced by high and low temperature environments, and has good environmental adaptability.

2. According to the utility model, the whole length can be flexibly adjusted by replacing the screw rods with corresponding lengths and increasing or reducing the number of the insulating rings, the drift rings and the sealing rings, and the debugging of the performance is convenient, and because PEEK parts and PCB plates are adopted as main component parts of the drift tube, no ceramic parts are needed, no special processes such as metallization, welding and the like are needed, and the production difficulty, the production cost and the production period are greatly reduced.

Drawings

FIG. 1 is a top view of the present utility model;

FIG. 2 is a partial exploded view of the present utility model;

fig. 3 is a partial structural exploded view of the present utility model.

Legend description:

1. a screw; 2. an insulating ring; 3. a seal ring; 4. a drift ring; 5. an ionization chamber; 6. a voltage dividing circuit board; 7. a nut; 8. an elastic washer; 9. a gasket; 10. an ion gate; 11. a signal detection chamber; 12. a groove; 13. a first protrusion; 14. a first screw hole; 15. a second screw hole; 16. a through hole; 17. and a second through hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, the drift tube with flexible length adjustment manufactured by using PEEK and a PCB board provided by the utility model comprises an ionization chamber 5 and a signal detection chamber 11, wherein the ionization chamber 5 and the signal detection chamber 11 are connected into a whole through screw rods 1 at four corners of the ionization chamber 5, a plurality of insulating rings 2 and drift rings 4 which are overlapped in a staggered way are sleeved on the screw rods 1 between the ionization chamber 5 and the signal detection chamber 11, and a sealing ring 3 is arranged between each insulating ring 2 and each drift ring 4;

the right end of the screw 1 is in threaded connection with the ionization chamber 5, and the left end of the screw passes through holes corresponding to four corners of the signal detection chamber 11 and the gasket 9 to be in threaded connection with the nut 7 and the elastic gasket 8 so as to form a whole;

an ion gate 10 is arranged on the screw 1 between the ionization chamber 5 and the signal detection chamber 11, so that an ionization region is formed between the ion gate 10 and the ionization chamber 5, and a drift region is formed between the ion gate 10 and the signal detection chamber 11;

the top parts of the ionization chamber 5, the signal detection chamber 11, the insulating ring 2 and the ion door 10 are respectively provided with a groove 12, and the bottoms of the grooves 12 of the ionization chamber 5 and the signal detection chamber 11 are respectively provided with a first screw hole 14 for installing the voltage division circuit board 6;

the voltage division circuit board 6 is set as the horizontal plate, and its middle interval is equipped with a plurality of through-holes 16 and a second through-hole 17, and both ends are equipped with second screw 15 respectively, are equipped with the screw in the second screw 15, wherein: the through holes 16 are matched with the first protrusions 13 at the top of the corresponding drift ring 4, the second through holes 17 are matched with the protrusions at the top of the ion gate 10, so that the voltage division circuit board 6 is arranged in the ionization chamber 5, the signal detection chamber 11, the insulating ring 2 and the grooves 12 at the top of the ion gate 10 and fixed through screws at two ends, and meanwhile, the first protrusions 13 of the drift ring 4 are clamped into the corresponding through holes 16 of the voltage division circuit board 6, and the protrusions at the top of the ion gate 10 are clamped into the second through holes 17 of the voltage division circuit board 6;

when the drift tube is used, a plurality of insulating rings 2 and drift rings 4 are stacked in a crossing way, a sealing ring 3 is arranged on the middle of the drift tube, the right ends of four screw rods 1 are respectively in threaded connection with screw holes at four corners of an ionization chamber 5, the left ends of the drift tube pass through signal detection chambers 11 and through holes corresponding to gaskets 9 to be in threaded connection with nuts 7 and elastic gaskets 8, the drift tube manufactured by the method has high strength, can endure strong vibration impact, is tightly pressed and fixed by the screw rods 1, the nuts 7 and the elastic gaskets 8, is not influenced by high and low temperature environments, has good environmental adaptability, and the whole length of the drift tube can be flexibly adjusted by changing the screw rods 1 with corresponding lengths, and is convenient to debug, and due to the fact that PEEK parts and PCB plates are adopted as main component parts of the drift tube, ceramic-free pieces do not need to be metallized, special processes such as welding and the like, and the production difficulty, the production cost and the production period are greatly reduced;

during assembly, the right end of the screw rod 1 is fastened on the ionization chamber 5, the insulating ring 2, the sealing ring 3 and the drift ring 4 are sequentially overlapped on the four screw rods 1, the series number is determined by actual demands, the whole length can be flexibly and rapidly adjusted as required, after the series connection is finished, the left ends of the four screw rods 1 are provided with gaskets 9 and elastic gaskets 8, the gaskets are pressed by nuts 7, after the detection performance is finished, the pressure dividing circuit board 6 is then arranged, the pressure dividing circuit board 6 is fixed in the ionization chamber 5, the signal detection chamber 11, the insulating ring 2 and the grooves 12 at the top of the ion door 10 by screws, the elastic gaskets 8 adopt 65 manganese spring steel, the elasticity is good, the rebound resilience after compression is good, no matter the high-temperature expansion is realized, the low-temperature shrinkage can provide enough pressing force to ensure the air tightness, the left end of the screw 1 penetrates through the left four corners of the gasket 9 respectively, the gasket 9 is convenient to fix and strengthen, the insulating ring 2 is made of PEEK, the processed part is high in strength, good in insulating property, smooth in surface, small in adsorption and resistant to high and low temperatures, the use requirement of the drift tube can be met, the screw 1 is made of stainless steel, the processing is quick, the cost is low, the strength is high, corrosion resistance is achieved, the drift ring 4 is a gold-plated PCB, the front side and the back side of the drift ring 4 and the inner hole are coated with copper and then plated with gold, the conductivity and the smoothness of the contact surface of the part and the sealing ring 3 are improved, the air leakage rate is reduced, and meanwhile, the copper-coated layer and the gold-plated layer on the surface cover the whole of the base material epoxy plate of the PCB inside, so that smell inside the epoxy plate cannot volatilize, and the cleanliness is guaranteed.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (5)

1. The utility model provides a but drift tube of flexible adjustment length is made with PEEK and PCB board, includes ionization chamber (5), signal detection room (11), its characterized in that: the ionization chamber (5) and the signal detection chamber (11) are connected into a whole through screw rods (1) at four corners of the ionization chamber, a plurality of insulating rings (2) and drift rings (4) which are overlapped in a staggered mode are sleeved on the screw rods (1) between the ionization chamber (5) and the signal detection chamber (11), and sealing rings (3) are arranged between each insulating ring (2) and each drift ring (4).

2. The drift tube of claim 1, wherein the length of the drift tube is flexibly adjustable by using PEEK and PCB, and further comprising: one end of the screw rod (1) is in threaded connection with the ionization chamber (5), and the other end of the screw rod passes through holes corresponding to four corners of the signal detection chamber (11) and the gasket (9) to be in threaded connection with the nut (7) and the elastic gasket (8).

3. The drift tube of claim 1, wherein the length of the drift tube is flexibly adjustable by using PEEK and PCB, and further comprising: an ion door (10) is arranged on the screw rod (1) between the ionization chamber (5) and the signal detection chamber (11).

4. A drift tube with flexible length adjustment made of PEEK and PCB according to claim 3, characterized in that: the ionization chamber (5), the signal detection chamber (11), the insulating ring (2) and the ion door (10) are respectively provided with a groove (12), and first screw holes (14) for installing the voltage division circuit board (6) are respectively formed in the bottoms of the grooves (12) of the ionization chamber (5) and the signal detection chamber (11).

5. The drift tube of claim 4, wherein the length of the drift tube is flexibly adjustable by using PEEK and PCB, and the drift tube is characterized in that: the bleeder circuit board (6) is established to the horizontal plate, and wherein the interval is equipped with a plurality of through-holes (16) and a second through-hole (17), and both ends are equipped with second screw (15) respectively, are equipped with the screw in second screw (15), wherein: the through holes (16) are matched and connected with the first protrusions (13) at the top of the corresponding drift ring (4), and the second through holes (17) are matched and connected with the protrusions at the top of the ion door (10).

Images