Mass spectrometer adjustable multi-receiver cavity

Abstract

The utility model belongs to the technical field of design and manufacture of isotope magnetic mass spectrometers in analytical instruments, particularly relates to a cavity of an adjustable multi-receiver of a mass spectrometer, and aims to solve the problem that the original adjustable multi-receiver occupies a large space. A front panel, a left panel, a right panel, a rear panel, an upper panel and a lower panel are hermetically and fixedly connected together to form a hollow rectangular cavity; a plurality of left lower connecting holes are formed in the left panel, left lower connecting pipes are mounted on the left lower connecting holes, the left lower connecting pipes are fixedly connected with the left panel, the left lower connecting pipes are in sealed connection with the stepping motors, and one stepping motor is mounted on each left lower connecting pipe; an output shaft of the stepping motor penetrates out of the left lower connecting pipe to be connected with a Faraday cup in the cavity. According to the utility model, the position of the Faraday cup is directly adjusted by using a plurality of stepping motors, and the number of intermediate structures can be reduced, thereby reducing the volume of the cavity.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of isotope magnetic mass spectrometer in analytical instrument, specifically relates to a cavity of mass spectrometer adjustable multi-receiver. BACKGROUND

[0002] Adjustable multi-receptor is the key equipment in mass spectrometer, it can realize the reception of different ion beams, and then the received signal is transmitted to the control system to carry out mass spectrum analysis.

[0003] The sample ionizes gas molecules in the ion source, then the ion flow is introduced into the flight tube, when passing through the electromagnetic field area, the charged ions are separated according to the mass difference. The adjustable multi-receiver is connected at the end of the flight tube to measure the intensity of the ion beam with a specific mass-to-charge ratio after the magnetic field separation. The separated ion beam enters different Faraday cups for analysis and detection.

[0004] A plurality of Faraday cups are arranged in the receiver, and different use positions need to be adjusted according to different samples to receive the ion beam. Generally, when adjusting the position of the Faraday cup, in order to improve the accuracy, a stepper motor is used for adjustment. However, when adjusting, the final volume of the receiver is large and the floor area is large when the plurality of Faraday cups are adjusted by the plurality of stepper motors, which is not easy to arrange. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems in the prior art, i.e. the problem of large space occupied by the original adjustable multi-receiver, the utility model provides a cavity of mass spectrometer adjustable multi-receiver.

[0006] The cavity of mass spectrometer adjustable multi-receiver provided in the application adopts the following technical scheme:

[0007] A cavity of mass spectrometer adjustable multi-receiver, comprising a lower panel, a front panel, a left panel, a right panel, a rear panel and an upper panel, the front panel, the left panel, the right panel, the rear panel, the upper panel and the lower panel are sealingly and fixedly connected together to form an internal hollow rectangular cavity;

[0008] The lower panel supports the Faraday cup multi-receiver connected on the cavity;

[0009] A front connecting hole is formed in the front panel for connecting the cavity and the front end of the flight tube of the multi-receiver;

[0010] The left panel is provided with a left upper connecting hole, and the left panel is sealingly connected with the power supply end through the left upper connecting hole.

[0011] The rear panel is provided with a rear connecting hole for connecting the cavity with a multi-receiver rear end cavity.

[0012] The upper panel is provided with an upper opening, and a cover plate is arranged at the opening.

[0013] By using the above technical scheme, in use, the positions of the Faraday cups in the cavity can be changed by adjusting the stepping motors at different positions, and the number of intermediate structures can be reduced by using multiple stepping motors to directly adjust the positions of the Faraday cups, so that the volume of the cavity is reduced.

[0014] Preferably, the right panel is provided with a right upper connecting hole, and the right panel is sealingly connected with the power supply end through the right upper connecting hole.

[0015] Preferably, the right panel is provided with multiple right lower connecting holes, the multiple right lower connecting holes are arranged at equal intervals, and the right lower connecting holes are arranged on the lower side of the right upper connecting hole; a right lower connecting pipe is arranged on each right lower connecting hole, the right lower connecting pipe is fixedly connected with the right panel, the right lower connecting pipe is sealingly connected with a stepping motor, and one stepping motor is arranged on each right lower connecting pipe; an output shaft of the stepping motor penetrates through the right lower connecting pipe and is connected with a Faraday cup in the cavity.

[0016] Preferably, the upper panel is fixedly connected with an upper flange, and the cover plate is sealingly connected with the upper flange.

[0017] Preferably, the lower side of the lower panel is further fixedly connected with a support frame.

[0018] Preferably, the left lower connecting pipe is fixedly connected with a left lower connecting flange at the pipe opening, and the right lower connecting pipe is fixedly connected with a right lower connecting flange at the pipe opening.

[0019] Preferably, the front connecting pipe is fixedly connected with a front connecting flange at the pipe opening, and the rear connecting pipe is fixedly connected with a rear connecting flange at the pipe opening.

[0020] Preferably, the left upper connecting pipe is fixedly connected with a left upper connecting flange at the pipe opening, and the right upper connecting pipe is fixedly connected with a right upper connecting flange at the pipe opening.

[0021] The utility model discloses the beneficial effect:

[0022] In use, the position of the Faraday cup in the cavity can be changed by adjusting the stepping motors at different positions, and using multiple stepping motors to directly adjust the position of the Faraday cup can reduce the number of intermediate structures, thereby reducing the volume of the cavity, and the overall design is compact, easy to process, easy to install, has low evacuation pressure, and can quickly achieve the required vacuum degree in the cavity. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the drawings:

[0024] Figure 1 A schematic diagram of the cavity of the mass spectrometer with an adjustable multi-receiver in the present embodiment;

[0025] Figure 2 A schematic diagram of the front panel in the present embodiment;

[0026] Figure 3 A schematic diagram of the left panel in the present embodiment;

[0027] Figure 4 A schematic diagram of the right panel in the present embodiment;

[0028] Figure 5 A schematic diagram of the rear panel in the present embodiment;

[0029] Figure 6 A schematic diagram of the upper panel in the present embodiment;

[0030] Figure 7 A schematic diagram of the upper panel without a cover plate in the present embodiment.

[0031] Reference signs: 1, lower panel; 2, front panel; 21, front connecting hole; 22, front connecting pipe; 23, front connecting flange; 3, left panel; 31, left upper connecting hole; 32, left upper connecting pipe; 33, left upper connecting flange; 34, left lower connecting hole; 35, left lower connecting pipe; 36, left lower connecting flange; 4, right panel; 41, right upper connecting hole; 42, right upper connecting pipe; 43, right upper connecting flange; 44, right lower connecting hole; 45, right lower connecting pipe; 46, right lower connecting flange; 5, rear panel; 51, rear connecting hole; 52, rear connecting pipe; 53, rear connecting flange; 6, upper panel; 61, upper opening; 62, cover plate; 63, upper flange; 7, support frame. DETAILED DESCRIPTION

[0032] The application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for ease of description.

[0033] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0034] The utility model provides a cavity of mass spectrometer adjustable multi-receiver, refer to Figure 1 The cavity of mass spectrometer adjustable multi-receptor includes lower panel 1, front panel 2, left panel 3, right panel 4, rear panel 5 and upper panel 6, and the front panel 2, left panel 3, right panel 4, rear panel 5, upper panel 6 and lower panel 1 are welded together to form a hollow rectangular cavity, then the whole is leak hunting, and after determining that there is no leakage, the cavity processing is completed. A plurality of Faraday cups are installed in the cavity.

[0035] The lower panel 1 is used for supporting the cavity and connecting the Faraday cup multi-receptor.

[0036] Refer to Figure 2 A front connecting hole 21 is formed in the front panel 2, a front connecting pipe 22 is installed on the front connecting hole 21, the front connecting pipe 22 is fixedly connected with the front panel 2, and a front connecting flange 23 is fixedly connected at the pipe opening of the front connecting pipe 22. The front connecting pipe 22 is sealingly connected with the front end flight pipe of the multi-receptor through the front connecting flange 23, for inputting the separated ion beam into the cavity, so that the ion beam enters the corresponding Faraday cup.

[0037] Refer to Figure 3 A left upper connecting hole 31 is formed in the left panel 3, a left upper connecting pipe 32 is installed on the left upper connecting hole 31, the left upper connecting pipe 32 is fixedly connected with the left panel 3, and a left upper connecting flange 33 is fixedly connected at the pipe opening of the left upper connecting pipe 32. The left upper connecting pipe 32 is sealingly connected with the power supply end through the left upper connecting flange 33, for providing power supply for the Faraday cups in the cavity.

[0038] A plurality of left lower connecting holes 34 are also formed in the left panel 3, the plurality of left lower connecting holes 34 are arranged at equal intervals, and the left lower connecting holes 34 are arranged on the lower side of the left upper connecting hole 31. A left lower connecting pipe 35 is installed on the left lower connecting hole 34, the left lower connecting pipe 35 is fixedly connected with the left panel 3, and a left lower connecting flange 36 is fixedly connected at the pipe opening of the left lower connecting pipe 35. The left lower connecting pipe 35 is sealingly connected with the stepping motor through the left lower connecting flange 36, the output shaft of the stepping motor passes through the left lower connecting pipe 35 and is connected with the Faraday cup in the cavity, and one stepping motor is installed on each left lower connecting pipe 35.

[0039] Reference Figure 4 The right panel 4 has an upper right connection hole 41, and an upper right connection pipe 42 is installed on the upper right connection hole 41. The upper right connection pipe 42 is fixedly connected to the right panel 4, and an upper right connection flange 43 is fixedly connected to the pipe opening of the upper right connection pipe 42. The upper right connection pipe 42 is sealed to the power supply end through the upper right connection flange 43, and is used to provide power to the Faraday cup in the chamber.

[0040] Multiple lower right connection holes 44 are provided on the right panel 4. These holes are evenly spaced and located below the upper right connection holes 41. A lower right connection pipe 45 is installed on each lower right connection hole 44 and is fixedly connected to the right panel 4. A lower right connection flange 46 is fixedly connected to the opening of the lower right connection pipe 45. The lower right connection pipe 45 is sealed to the stepper motor through the lower right connection flange 46. The output shaft of the stepper motor passes through the lower right connection pipe 45 and connects to the Faraday cup in the chamber. One stepper motor is installed on each lower right connection pipe 45.

[0041] Both the left panel 3 and the right panel 4 are sealed to the power supply to ensure that the Faraday cup has sufficient power for mass spectrometry analysis. Furthermore, stepper motors are installed on both the left panel 3 and the right panel 4. The stepper motors on the left panel 3 and the right panel 4 work together to more accurately adjust the position of the Faraday cup.

[0042] Reference Figure 5 The rear panel 5 has a rear connection hole 51, and a rear connection pipe 52 is installed on the rear connection hole 51. The rear connection pipe 52 is fixedly connected to the rear panel 5, and a rear connection flange 53 is fixedly connected to the pipe opening of the rear connection pipe 52. The rear connection pipe 52 is sealed to the rear cavity of the multi-receiver through the rear connection flange 53.

[0043] Reference Figure 6 , Figure 7 The upper panel 6 has an upper opening 61 for observing the Faraday cup and placing the Faraday cup in the chamber. A cover plate 62 is provided at the opening, and an upper flange 63 is fixedly connected to the upper panel 6. The cover plate 62 and the upper flange 63 are sealed together, so that the cover plate 62 is connected to the upper panel 6 through the upper flange 63.

[0044] A support frame 7 is also fixedly connected to the lower side of the lower plate 1. The support frame 7 supports multiple receivers and adjusts the arrangement of the multiple receivers so that they can more easily receive the ion beam, thereby facilitating the entry of the ion beam into the Faraday cup of the chamber.

[0045] The front-to-back direction of the multiple receivers is the direction of ion beam movement.

[0046] The mass spectrometer cavity provided by the application can change the position of the Faraday cup in the cavity by adjusting the stepping motor at different positions in use, and the use of multiple stepping motors to directly adjust the position of the Faraday cup can reduce the number of intermediate structures, thereby reducing the volume of the cavity.

[0047] The term "comprising" or any other similar term is intended to encompass non-exclusive inclusion, such that processes, methods, articles, or equipment / devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or equipment / devices.

[0048] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical schemes after these changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A tunable multi-receiver cell for a mass spectrometer, characterized by: It comprises a lower panel (1), a front panel (2), a left panel (3), a right panel (4), a rear panel (5) and an upper panel (6), the front panel (2), the left panel (3), the right panel (4), the rear panel (5), the upper panel (6) and the lower panel (1) are sealingly and fixedly connected together to form an internal hollow rectangular cavity; The lower panel (1) supports the cavity and connects the Faraday cup multi-receiver; The front panel (2) is provided with a front connecting hole (21) for connecting the cavity with the front end of the multi-receiver flight tube; The left panel (3) is provided with a left upper connecting hole (31), and the left panel (3) is sealingly connected with the power supply end through the left upper connecting hole (31); the left panel (3) is provided with a plurality of left lower connecting holes (34), and a left lower connecting pipe (35) is installed on each left lower connecting hole (34); the left lower connecting pipe (35) is fixedly connected with the left panel (3) and sealingly connected with a stepping motor; one stepping motor is installed on each left lower connecting pipe (35); the output shaft of the stepping motor penetrates through the left lower connecting pipe (35) and is connected with the Faraday cup in the cavity; The rear panel (5) is provided with a rear connecting hole (51) for connecting the cavity with the rear end of the multi-receiver cavity; The upper panel (6) is provided with an upper opening (61), and a cover plate (62) is arranged at the opening.

2. A tunable multi-receiver cell for a mass spectrometer according to claim 1, wherein: The right panel (4) is provided with a right upper connecting hole (41), and the right panel (4) is sealingly connected with the power supply end through the right upper connecting hole (41).

3. The tunable multi-receiver cell for a mass spectrometer of claim 1, wherein: The right panel (4) is provided with a plurality of right lower connecting holes (44); a right lower connecting pipe (45) is installed on each right lower connecting hole (44); the right lower connecting pipe (45) is fixedly connected with the right panel (4) and sealingly connected with a stepping motor; one stepping motor is installed on each right lower connecting pipe (45); the output shaft of the stepping motor penetrates through the right lower connecting pipe (45) and is connected with the Faraday cup in the cavity.

4. The tunable multi-receiver cell for a mass spectrometer of claim 1, wherein: The upper panel (6) is fixedly connected with an upper flange (63), and the cover plate (62) is sealingly connected with the upper flange (63).

5. The tunable multi-receiver cell for a mass spectrometer of claim 1, wherein: The lower side of the lower panel (1) is further fixedly connected with a support frame (7).

6. The tunable multi-receiver cell for a mass spectrometer of claim 3, wherein: The left lower connecting pipe (35) is fixedly connected with a left lower connecting flange (36) at the pipe opening, and the right lower connecting pipe (45) is fixedly connected with a right lower connecting flange (46) at the pipe opening.

7. The tunable multi-receiver cell for a mass spectrometer of claim 1, wherein: A front connecting pipe (22) is installed on the front connecting hole (21), and a front connecting flange (23) is fixedly connected with the pipe opening of the front connecting pipe (22); a rear connecting pipe (52) is fixedly connected with a rear connecting flange (53) at the pipe opening.

8. The tunable multi-receiver cell for a mass spectrometer of claim 2, wherein: A left upper connecting pipe (32) is installed on the left upper connecting hole (31), and a left upper connecting flange (33) is fixedly connected with the pipe opening of the left upper connecting pipe (32); a right upper connecting pipe (42) is installed on the right upper connecting hole (41), and a right upper connecting flange (43) is fixedly connected with the pipe opening of the right upper connecting pipe (42).

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