CN214251416U

CN214251416U - Filter core, switching structure and vacuum system thereof

Info

Publication number: CN214251416U
Application number: CN202022857707.8U
Authority: CN
Inventors: 刘清清; 王鹏兵; 焦思愷
Original assignee: Suzhou Zhongke Keyi Technology Development Co ltd
Current assignee: Suzhou Zhongke Keyi Technology Development Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-09-21
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to a helium mass spectrometer leak detector technical field, concretely relates to filter core, switching structure and vacuum system thereof. The filter element of the utility model is suitable for being installed on a switching structure, and comprises a first piece and a second piece, wherein the first piece and/or the second piece are provided with a connecting part, and the connecting part is connected with the switching structure; the first piece and/or the second piece are/is provided with a joint part, and the joint part is jointed with the inner wall of the first vent hole on the switching structure so as to prevent impurities from flowing into the first vent hole; the first piece is provided with a second vent hole, and the second piece is connected with the first piece to plug the second vent hole. Through first and second, enlarged the utility model discloses a filter core and the area of contact of the impurity of being examined leakage space or system, the filter effect is good, prevents to be examined system's impurity and can directly get into leak detector vacuum system, and then influences leak detector sensitivity, causes the leak detector trouble.

Description

Filter core, switching structure and vacuum system thereof

Technical Field

The utility model relates to a helium mass spectrometer leak detector technical field, concretely relates to filter core, switching structure and vacuum system thereof.

Background

Helium is used as leakage-indicating gas in the helium mass spectrometer leak detector, is used for leak detection, and has the advantages of stable performance and high sensitivity.

When the helium mass spectrometer leak detector works, a detected leakage space or a detected system needs to be connected, and in practical application, impurities often exist in the detected leakage space or the detected system. When the leak detector works, impurities of a detected system can directly enter a vacuum system of the leak detector, so that the sensitivity of the leak detector is influenced, the fault of the leak detector is caused, and the reliability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a filter core, switching structure and vacuum system thereof to solve among the prior art by the direct leak detector vacuum system that gets into of system's impurity meeting, and then influence leak detector sensitivity, and cause the leak detector trouble, the poor problem of reliability.

The technical scheme of the utility model is that:

a filter element is suitable for being installed on a switching structure and comprises a first piece and a second piece, wherein a connecting part is arranged on the first piece and/or the second piece and is connected with the switching structure; the first piece and/or the second piece are/is provided with a joint part, and the joint part is jointed with the inner wall of the first vent hole on the switching structure so as to prevent impurities from flowing into the first vent hole; the first piece is provided with a second vent hole, and the second piece is connected with the first piece to plug the second vent hole.

Preferably, the attachment portion is provided on the first member.

Preferably, the abutment is an outer wall of the first member.

Preferably, the first vent hole and the second vent hole are coaxially arranged.

Preferably, the second vent hole is in a truncated cone shape.

Preferably, the connecting portion is connected to a mounting portion provided on the adapting structure, one of the connecting portion and the mounting portion is an annular groove, and the other is an annular protrusion.

Preferably, the first piece is integrally formed with the second piece.

Preferably, the second member is disposed at one end of the first member, and is disposed away from the connection end of the adapter structure.

A switching structure comprises the filter element.

Preferably, the annular support periphery has seted up the mounting groove, is equipped with the sealing washer in the mounting groove.

Preferably, this switching structure still includes the ring carrier, be equipped with on the ring carrier first air vent, the laminating portion of filter core with the inner wall laminating of first air vent links to each other, the connecting portion of filter core with the ring carrier is connected.

A vacuum system comprises the switching structure.

The technical scheme of the utility model has following advantage:

the filter element of the utility model is suitable for being installed on a switching structure and comprises a first piece and a second piece, wherein the first piece and/or the second piece are provided with a connecting part which is connected with the switching structure; the first piece and/or the second piece are/is provided with a joint part which is jointed with the inner wall of the first vent hole on the switching structure so as to prevent impurities from flowing in through the first vent hole; the first piece is provided with a second vent hole, and the second piece is connected with the first piece to block the second vent hole.

When the filter element is used, the attaching parts on the first piece and/or the second piece are attached to the inner wall of the first vent hole on the switching structure, and then the connecting parts on the first piece and/or the second piece are connected with the switching structure, so that the filter element is installed on the switching structure.

When the device is used, due to the arrangement of the joint part, impurities in a detected leakage space or a system do not flow in through the first vent hole but flow in through the second vent hole; when the second venthole of flowing through, impurity receives shutoff, the separation of second, through first and second, has enlarged the utility model discloses a filter core and the area of contact of the impurity of examined blank space or system, the filter effect is good, prevents to be examined system impurity and can directly get into leak detector vacuum system, and then influences leak detector sensitivity, causes the leak detector trouble.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a front view of a filter element of the present invention;

FIG. 2 is a schematic structural view of a cross-sectional view of the front view shown in FIG. 1;

fig. 3 is a schematic structural view of the ring-shaped support shown in fig. 1 and 2.

Description of reference numerals:

1-a first piece; 2-a second piece; 4-a bonding part; 5-an installation part; 6-a second vent; 7-a ring-shaped support; 8-mounting grooves; 9-sealing ring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example one

The filter element of the present embodiment, as shown in fig. 1 to fig. 3, is adapted to be installed on an adapter structure, and includes a first member 1 and a second member 2, where the first member 1 and/or the second member 2 are provided with a connecting portion, and the connecting portion is connected to the adapter structure; the first piece 1 is provided with a joint part 4, and the joint part 4 is jointed with the inner wall of a first vent hole on the switching structure so as to prevent impurities from flowing in through the first vent hole; the first part 1 is provided with a second vent hole 6, and the second part 2 is connected with the first part 1 to seal the second vent hole 6.

When the filter core is used, the attaching part 4 on the first piece 1 is attached to the inner wall of the first vent hole on the switching structure, and then the connecting part on the first piece 1 is connected with the switching structure, so that the filter core is installed on the switching structure.

When in use, due to the arrangement of the joint part 4, impurities in the detected leakage space or system do not flow in through the first vent hole but through the second vent hole 6; when flowing through second venthole 6, impurity receives shutoff, the separation of second piece 2, through first 1 and second 2, has enlarged the utility model discloses a filter core and the area of contact of the impurity of examined blank space or system, the filter effect is good, prevents to be examined system impurity and can directly get into leak detector vacuum system, and then influences leak detector sensitivity, causes the leak detector trouble.

Specifically, the first piece 1 and the second piece 2 are integrally formed and made of sintered metal, so that the filter element of the present embodiment is easier to manufacture, and the sintered metal enables the filter element of the present embodiment to have a better filtering effect.

In particular, the attachment portion 4 is provided on the first piece 1. As an alternative embodiment of the bonding portion 4, the bonding portion 4 is provided on the second member 2. The attaching portion 4 is an outer wall of the first member 1.

As an alternative embodiment of the attachment portion 4, the attachment portion 4 may have a ring-shaped configuration around the outer wall of the first member 1, a spiral configuration, or a corrugated configuration.

Specifically, the first vent hole and the second vent hole 6 are coaxially arranged. The second vent hole 6 is in a circular truncated cone shape. The second piece 2 is arranged at one end of the first piece 1 and is far away from the connecting end of the switching structure.

Connecting portion with locate installation department 5 on the switching structure is connected, connecting portion are the ring channel, installation department 5 for with the ring channel adaptation is protruding.

As another embodiment, the mounting portion 5 is an annular groove and the connecting portion is an annular protrusion.

Example two

An adapter structure of this embodiment includes the filter element of the first embodiment.

This switching structure still includes ring carrier 7, be equipped with on ring carrier 7 first air vent, the laminating portion 4 of filter core with the inner wall laminating of first air vent links to each other, the connecting portion of filter core with installation department 5 on the ring carrier 7 is connected.

Specifically, the mounting portion 5 is an annular projection provided on an inner wall of the annular holder 7.

Further, the periphery of the ring-shaped support 7 is provided with an installation groove 8, a sealing ring 9 is arranged in the installation groove 8, and preferably, the section of the installation groove 8 is in a circular arc shape matched with the structure of the sealing ring 9.

The adapter structure further comprises a clamping connector, which is used in cooperation with the annular support 7 and the sealing ring 9, and it should be noted that the clamping connector is a clamping connector used in the existing vacuum technology.

EXAMPLE III

A vacuum system of this embodiment, including the second switching structure, this vacuum system still includes helium mass spectrometer leak detector, switching structure is connected with helium mass spectrometer leak detector.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A filter cartridge adapted to be mounted on a transfer structure, comprising

The first piece (1) and the second piece (2), the first piece (1) and/or the second piece (2) are/is provided with a connecting part, and the connecting part is connected with the switching structure;

the first piece (1) and/or the second piece (2) are/is provided with a joint part (4), and the joint part (4) is jointed with the inner wall of a first vent hole on the switching structure so as to prevent impurities from flowing in through the first vent hole;

and a second vent hole (6) is formed in the first part (1), and the second part (2) is connected with the first part (1) to seal the second vent hole (6).

2. The filter cartridge according to claim 1, characterised in that the abutment (4) is provided on the first piece (1).

3. The filter cartridge according to claim 2, characterised in that the abutment (4) is an outer wall of the first piece (1).

4. The filter cartridge according to claim 1, wherein the first venting hole is arranged coaxially to the second venting hole (6).

5. The filter cartridge according to claim 4, wherein the second venting hole (6) is frustoconical.

6. The filter cartridge according to claim 1, characterized in that the connecting part is connected with a mounting part (5) arranged on the adapter structure, one of the connecting part and the mounting part (5) is an annular groove, and the other is an annular protrusion.

7. The filter cartridge according to any one of claims 1 to 6, characterised in that the first piece (1) is integral with the second piece (2).

8. The filter cartridge according to any one of claims 1 to 6, characterised in that the second piece (2) is provided at one end of the first piece (1) and is located away from the connecting end of the transition arrangement.

9. A transition structure comprising a filter cartridge according to any one of claims 1 to 8.

10. The transfer structure according to claim 9, further comprising a ring-shaped support (7), wherein the first vent hole is formed in the ring-shaped support (7), the attaching portion (4) of the filter element is attached to the inner wall of the first vent hole, and the connecting portion of the filter element is connected to the ring-shaped support (7).

11. A transfer structure according to claim 10, wherein the annular support (7) is provided with a mounting groove (8) at the periphery thereof, and a sealing ring (9) is arranged in the mounting groove (8).

12. A vacuum system comprising a transition structure according to any one of claims 9 to 11.