CN216054575U

CN216054575U - Vacuum environment manufacturing structure of quadrupole mass spectrometer

Info

Publication number: CN216054575U
Application number: CN202122463658.4U
Authority: CN
Inventors: 杨旻; 邹炳德; 吴兰; 孙子游; 卞万城; 季炜; 张钰
Original assignee: Meikang Shengde Medical Technology Suzhou Co ltd
Current assignee: Meikang Shengde Medical Technology Suzhou Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-03-15
Anticipated expiration: 2031-10-13

Abstract

The utility model relates to the technical field of mass spectrometers, in particular to a vacuum environment manufacturing structure of a quadrupole mass spectrometer, wherein a shell exhaust tube is inserted at the upper end of a shell of the mass spectrometer, a connecting gas tube is inserted at the lower side of the shell of the mass spectrometer, a vacuum pump is arranged inside the shell of the mass spectrometer, a round hole is formed in the central position of the upper end of the shell of the mass spectrometer, a top cover is arranged on the inner side of the round hole, the lower side of the top cover is fixed with the upper end of the vacuum pump, and a fixing mechanism which is convenient to disassemble and assemble is arranged between the top cover and the round hole. The vacuum pump has the advantages that the design is novel, the structure is ingenious, the vacuum pump can be quickly disassembled and assembled by conveniently disassembling and assembling the fixing mechanism, the operation is simple and quick, the disassembling and assembling difficulty of the vacuum pump is reduced, the vacuum pump is conveniently disassembled and cleaned, a good sealing effect can be realized by the sealing structure, the gas sucked into the air inlet end of the vacuum pump is prevented from leaking, and the operation stability is improved.

Description

Vacuum environment manufacturing structure of quadrupole mass spectrometer

Technical Field

The utility model relates to the technical field of mass spectrometers, in particular to a vacuum environment manufacturing structure of a quadrupole mass spectrometer.

Background

Quadrupole mass spectrometers are known by their name quadrupole mass selector. In the four poles, four electrode poles are divided into two groups, and radio frequency reverse phase alternating voltage is applied to the four electrode poles respectively. Ions in this potential field, after being stabilized by selected portions, may reach a detector or may enter a subsequent space for subsequent analysis. The vacuum system is typically connected directly to the mass spectrometer chamber to bring the mass spectrometer to a vacuum state. It is worth noting that the vacuum of a quadrupole mass spectrometer is not a high vacuum. The ions move in the pole pieces and a large amount of energy is obtained from the electric field. To form a stable ion cloud, very small amounts of gas are required in quadrupole mass spectrometry to absorb the excess kinetic energy. The vacuum of a quadrupole mass spectrometer is typically one hundredth of the time-of-flight mass spectrum, one hundred billion of the mass spectrum of an orbital ion trap.

However, the existing vacuum manufacturing structure for the mass spectrometer has the disadvantages that the vacuum pump is inconvenient to rapidly disassemble, the disassembling and assembling operation steps are complex and tedious, the cleaning difficulty of the vacuum pump in the later period is large, the sealing performance of the existing vacuum manufacturing structure is poor, gas leakage is easily caused during operation, and the operation stability is poor. Accordingly, one skilled in the art provides a vacuum environment fabrication structure for a quadrupole mass spectrometer to solve the problems set forth in the background art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vacuum environment manufacturing structure of a quadrupole mass spectrometer, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a structure is made to level four pole mass spectrograph vacuum environment, includes mass spectrograph casing and structure casing, the upper end of mass spectrograph casing is inserted and is equipped with the casing exhaust tube, the downside of structure casing is inserted and is equipped with the connecting tube, and the inside of structure casing is provided with the vacuum pump, the upper end of structure casing is located central point and puts the department and has seted up the round hole, the inboard of round hole is provided with the top cap, the downside of top cap is fixed with the upper end of vacuum pump, and is provided with between top cap and the round hole just dismouting fixed establishment, the end of giving vent to anger of vacuum pump is connected with the blast pipe that extends to the structure casing is outside, the inlet end of vacuum pump passes through seal structure and connecting tube's upper end intercommunication.

As a still further scheme of the utility model: just, dismantle fixed establishment and include that the symmetry is seted up in two locking grooves of round hole both sides, is slided and is inserted two slide bars that locate the top cap both sides and correspond two locking groove position departments and rotate and connect in the inside lead screw that is located central point department of putting of top cap, be connected with the lead screw slider through the screw thread rotation on the lead screw, the bilateral symmetry of lead screw slider is rotated and is connected with two and is rotated the connecting rod, two the one end of rotating the connecting rod is rotated with the one end of two slide bars respectively and is connected, two the one end of slide bar all is fixed with the latch segment.

As a still further scheme of the utility model: two inside one side in locking groove all is provided with first inclined plane, two one side of latch segment all is provided with the second inclined plane.

As a still further scheme of the utility model: two the equal slip cap in outside one end of slide bar is equipped with the support baffle, two the support baffle all is fixed mutually with the inboard of top cap.

As a still further scheme of the utility model: the sealing structure comprises a fixing ring fixed at the upper end of the connecting air pipe and a sealing groove ring fixed at the air inlet end of the vacuum pump, wherein the upper end of the fixing ring is fixed with a sealing ring, the position of the lower end of the sealing groove ring corresponding to the sealing ring is provided with a sealing groove, and the sealing ring is made of rubber.

As a still further scheme of the utility model: and connecting flanges are fixed at one ends of the shell exhaust tube and the structural shell, and the two connecting flanges are fixed through bolts.

Compared with the prior art, the utility model has the beneficial effects that: the vacuum pump has the advantages that the design is novel, the structure is ingenious, the vacuum pump can be quickly disassembled and assembled by conveniently disassembling and assembling the fixing mechanism, the operation is simple and quick, the disassembling and assembling difficulty of the vacuum pump is reduced, the vacuum pump is conveniently disassembled and cleaned, a good sealing effect can be realized by the sealing structure, the gas sucked into the air inlet end of the vacuum pump is prevented from leaking, and the operation stability is improved.

Drawings

FIG. 1 is a schematic diagram of a vacuum environment fabrication configuration for a quadrupole mass spectrometer;

FIG. 2 is a schematic diagram of the internal structure of a quadrupole mass spectrometer vacuum environment fabrication structure;

FIG. 3 is an enlarged schematic view of FIG. 2 at A in a vacuum environment fabrication configuration for a quadrupole mass spectrometer;

fig. 4 is an enlarged schematic diagram of a vacuum environment manufacturing structure of a quadrupole mass spectrometer at B in fig. 2.

In the figure: 1. a mass spectrometer housing; 2. a shell exhaust tube; 3. a structural shell; 4. connecting an air pipe; 5. a vacuum pump; 6. a top cover; 7. an exhaust pipe; 8. a screw rod; 9. a screw rod slide block; 10. rotating the connecting rod; 11. a slide bar; 12. a locking block; 13. a locking groove; 14. supporting the partition plate; 15. a fixing ring; 16. a seal ring; 17. and sealing the groove ring.

Detailed Description

Referring to fig. 1 to 4, in the embodiment of the present invention, a vacuum environment manufacturing structure of a quadrupole mass spectrometer includes a mass spectrometer housing 1 and a structural housing 3, a housing exhaust tube 2 is inserted into an upper end of the mass spectrometer housing 1, a connecting gas tube 4 is inserted into a lower side of the structural housing 3, a vacuum pump 5 is disposed inside the structural housing 3, a circular hole is disposed at a central position of the upper end of the structural housing 3, a top cover 6 is disposed inside the circular hole, a lower side of the top cover 6 is fixed to an upper end of the vacuum pump 5, a fixing mechanism which is easy to disassemble and assemble is disposed between the top cover 6 and the circular hole, an air outlet end of the vacuum pump 5 is connected to an exhaust pipe 7 extending to an outside of the structural housing 3, and an air inlet end of the vacuum pump 5 is communicated with an upper end of the connecting gas tube 4 through a sealing structure.

In fig. 3: just, dismantle fixed establishment and set up two locking grooves 13 in the round hole both sides including the symmetry, slide and insert two slide bars 11 and rotation connection in the inside lead screw 8 that is located central point department of top cap 6 that locate top cap 6 both sides and correspond two locking groove 13 positions department, it is connected with lead screw slider 9 to rotate through the screw thread on the lead screw 8, the bilateral symmetry of lead screw slider 9 rotates and is connected with two and rotates connecting rod 10, two one end that rotate connecting rod 10 rotate respectively with the one end of two slide bars 11 and be connected, the one end of two slide bars 11 all is fixed with latch segment 12, just, dismantle fixed establishment, can carry out the dismouting to vacuum pump 5 fast, and the operation is simple and fast, the dismouting degree of difficulty of vacuum pump 5 has been reduced, thereby conveniently dismantle and clear up vacuum pump 5.

In fig. 3: first inclined planes are arranged on one sides of the inner parts of the two locking grooves 13, second inclined planes are arranged on one sides of the two locking blocks 12, the second inclined planes on one sides of the locking blocks 12 are in sliding fit with the first inclined planes on one sides of the locking grooves 13, downward component force can be applied to the locking blocks 12, accordingly, downward component force is applied to the top cover 6, the top cover 6 drives the vacuum pump 5 to move downwards, the sealing ring 16 is combined with the inner side of the sealing groove, a good sealing effect is achieved, and gas leakage is prevented.

In fig. 3: the equal slip cap in outside one end of two slide bars 11 is equipped with support baffle 14, and two support baffles 14 are all fixed mutually with the inboard of top cap 6, and support baffle 14 is used for supporting slide bar 11.

In fig. 4: the sealing structure comprises a fixing ring 15 fixed at the upper end of the connecting air pipe 4 and a sealing groove ring 17 fixed at the air inlet end of the vacuum pump 5, wherein the upper end of the fixing ring 15 is fixed with a sealing ring 16, the lower end of the sealing groove ring 17 corresponds to the position of the sealing ring 16 and is provided with a sealing groove, the sealing ring 16 is made of rubber, the sealing ring 16 is combined with the inner side of the sealing groove to play a good sealing role and prevent gas leakage.

In fig. 1: and one ends of the shell exhaust pipe 2 and the structural shell 3 are both fixed with connecting flanges, the two connecting flanges are fixed through bolts, and the connecting flanges are used for communicating the shell exhaust pipe 2 and the structural shell 3.

The working principle of the utility model is as follows: the vacuum pump 5 operates to suck air inside the mass spectrometer shell 1 through the shell exhaust tube 2 and the connecting air tube 4, and then the air is exhausted through the exhaust tube 7, so that a vacuum environment can be manufactured inside the mass spectrometer shell 1, when the vacuum pump 5 needs to be disassembled and cleaned, the screw rod 8 is rotated to drive the screw rod slider 9 to move through screw tooth meshing, so that the screw rod slider 9 moves downwards, the screw rod slider 9 moves to drive the two rotating connecting rods 10 to rotate reversely, the two rotating connecting rods 10 respectively drive the two sliding rods 11 to move, the two sliding rods 11 respectively drive the two locking blocks 12 to move, so that the two locking blocks 12 are respectively separated from the two locking grooves 13, the top cover 6 can be removed, then the top cover 6 is taken out from the inner side of the round shell, the top cover 6 drives the vacuum pump 5 to move out of the structure shell 3, and the vacuum pump 5 can be rapidly disassembled, the disassembly difficulty is greatly reduced, the vacuum pump 5 is convenient to clean in the later period, and during installation, the screw rod 8 is reversely rotated through the principle, so that the two locking blocks 12 are respectively inserted into the inner sides of the two locking grooves 13, the second inclined plane on one side of the locking block 12 is in sliding fit with the first inclined plane on one side of the locking groove 13, downward component force can be applied to the locking block 12, downward component force is applied to the top cover 6, the top cover 6 drives the vacuum pump 5 to move downwards, the sealing ring 16 is combined with the inner side of the sealing groove, a good sealing effect is achieved, and gas leakage is prevented.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. A vacuum environment manufacturing structure of a quadrupole mass spectrometer comprises a mass spectrometer shell (1) and a structural shell (3), it is characterized in that a shell body air exhaust pipe (2) is inserted at the upper end of the mass spectrometer shell body (1), a connecting air pipe (4) is inserted at the lower side of the structure shell body (3), a vacuum pump (5) is arranged inside the structural shell (3), a round hole is arranged at the central position of the upper end of the structural shell (3), a top cover (6) is arranged on the inner side of the round hole, the lower side of the top cover (6) is fixed with the upper end of the vacuum pump (5), a fixing mechanism which is convenient to disassemble and assemble is arranged between the top cover (6) and the round hole, the air outlet end of the vacuum pump (5) is connected with an exhaust pipe (7) which extends to the outside of the structural shell (3), and the air inlet end of the vacuum pump (5) is communicated with the upper end of the connecting air pipe (4) through a sealing structure.

2. The vacuum environment manufacturing structure of the quadrupole mass spectrometer as claimed in claim 1, wherein the fixing mechanism comprises two locking grooves (13) symmetrically formed on two sides of the circular hole, two sliding rods (11) slidably inserted on two sides of the top cover (6) and corresponding to the two locking grooves (13), and a screw rod (8) rotatably connected to the inside of the top cover (6) at a central position, wherein a screw rod slider (9) is rotatably connected to the screw rod (8) through a screw thread, two rotating connecting rods (10) are rotatably connected to two sides of the screw rod slider (9) symmetrically, one end of each of the two rotating connecting rods (10) is rotatably connected to one end of each of the two sliding rods (11), and a locking block (12) is fixed to one end of each of the two sliding rods (11).

3. A quadrupole mass spectrometer vacuum environment fabrication structure according to claim 2, wherein the inner sides of the two locking grooves (13) are each provided with a first inclined surface, and the sides of the two locking blocks (12) are each provided with a second inclined surface.

4. The vacuum environment manufacturing structure of the quadrupole mass spectrometer as recited in claim 2, wherein the outer ends of the two sliding rods (11) are slidably sleeved with supporting partition plates (14), and the two supporting partition plates (14) are fixed with the inner side of the top cover (6).

5. The vacuum environment manufacturing structure of the quadrupole mass spectrometer according to claim 1, wherein the sealing structure comprises a fixing ring (15) fixed at the upper end of the connecting gas pipe (4) and a sealing groove ring (17) fixed at the gas inlet end of the vacuum pump (5), a sealing ring (16) is fixed at the upper end of the fixing ring (15), a sealing groove is formed at the lower end of the sealing groove ring (17) corresponding to the sealing ring (16), and the sealing ring (16) is made of a rubber component.

6. The vacuum environment manufacturing structure of the quadrupole mass spectrometer as recited in claim 1, wherein the shell exhaust tube (2) and one end of the structural shell (3) are both fixed with a connecting flange, and the two connecting flanges are fixed through bolts.