CN218441059U - High vacuum bellows - Google Patents
High vacuum bellows Download PDFInfo
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- CN218441059U CN218441059U CN202222749614.2U CN202222749614U CN218441059U CN 218441059 U CN218441059 U CN 218441059U CN 202222749614 U CN202222749614 U CN 202222749614U CN 218441059 U CN218441059 U CN 218441059U
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- corrugated pipe
- pipe body
- high vacuum
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Abstract
The utility model relates to a high vacuum bellows, including first corrugated pipe body, second corrugated pipe body, connecting piece and two flanges. Wherein, the first corrugated pipe body is provided with a first interface; the second corrugated pipe body is coaxially arranged on the inner side of the first corrugated pipe body, the second corrugated pipe body is provided with a second interface, and the first interface and the second interface are arranged in a central symmetry manner along the axis of the second corrugated pipe body; the connecting piece is arranged between the first corrugated pipe body and the second corrugated pipe body; the two flanges are respectively connected with the second corrugated pipe body. Its advantage lies in, through setting up first corrugated pipe body and second corrugated pipe body, and first interface is central symmetry setting with the axis of second corrugated pipe body along the second corrugated pipe body with the second interface, and the body itself of first corrugated pipe body seals the second kneck, and the body itself of second corrugated pipe body seals first kneck, and double sealing makes the sealed effect of the high vacuum bellows of this application compare in prior art better.
Description
Technical Field
The utility model belongs to the technical field of the vacuum system technique and specifically relates to a high vacuum bellows is related to.
Background
The corrugated pipe is a regular wave-like pipe, and the commonly used metal corrugated pipes are made of carbon steel, stainless steel, steel lining plastic and aluminum.
The bellows is generally divided into a molded bellows and a welded bellows, and the bellows used in an ultra-high vacuum system is generally made of SUS316 type stainless steel, and in the ultra-high vacuum system, a molded bellows having NW flanges at both ends is often used to connect a molecular pump and a mechanical pump.
The manufacturing process of the formed corrugated pipe comprises the following steps: firstly, rolling a stainless steel plate into a cylinder shape, and welding an interface; and inserting the cylinder into a corrugated pipe die, and completing the manufacture of the formed corrugated pipe through hydraulic pressure. However, after the formed corrugated pipe is applied to a high vacuum system to form a high vacuum corrugated pipe, good sealing performance is required, welding is performed at an interface, and if the welding is not tight, a poor sealing effect is caused.
At present, the technical problem that the sealing effect is not good easily caused by imprecise welding when an interface of a high-vacuum corrugated pipe is manufactured is not solved.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a high vacuum bellows to when the interface of solving high vacuum bellows was in the preparation, in case the welding is not tight, caused the not good technical problem of sealed effect easily.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a high vacuum bellows, this bellows are applied to among the high vacuum system, include:
a first bellows body having a first interface;
the second corrugated pipe body is coaxially arranged on the inner side of the first corrugated pipe body and is tightly attached to the first corrugated pipe body, the second corrugated pipe body is provided with a second interface, and the first interface and the second interface are arranged in a central symmetry mode along the axis of the second corrugated pipe body;
the connecting piece is arranged between the first corrugated pipe body and the second corrugated pipe body, so that the first corrugated pipe body and the second corrugated pipe body are detachably connected;
and the two flanges are symmetrically arranged at two ends of the second corrugated pipe body and are respectively connected with the second corrugated pipe body.
As some of these embodiments, the connector comprises:
the connecting blocks are distributed and fixed on the inner side of the first corrugated pipe body;
and the connecting grooves are distributed and arranged on the outer side of the second corrugated pipe body and are respectively connected with the connecting blocks in a corresponding clamping manner.
As some of these embodiments, the second interface is the same length as the first interface and is a welded interface.
As some of these embodiments, further comprising:
the two mounting pieces are symmetrically arranged at two ends of the second corrugated pipe body and are fixedly sleeved on the corresponding flanges;
the limiting part is arranged between the two mounting parts, is detachably connected with the two mounting parts respectively, and is used for enabling the first corrugated pipe body and the second corrugated pipe body to keep the length after the expansion and contraction are completed after the expansion and contraction of the first corrugated pipe body and the second corrugated pipe body along the axis of the first corrugated pipe body and the second corrugated pipe body are completed.
As some of these embodiments, the mount comprises:
the mounting ring is sleeved and fixed on the corresponding flange;
and the mounting rods are distributed and fixed on the mounting ring and are detachably connected with the limiting part.
As some of the embodiments, the stopper includes:
the two limiting rings are coaxially arranged;
the mounting grooves are distributed on the limiting ring and are detachably connected with the mounting rods;
the sliding pieces are distributed between the two limiting rings and can slide along the axis of the second corrugated pipe body to change the length of the sliding pieces so as to adapt to the length of the first corrugated pipe body and the second corrugated pipe body which stretch along the axis of the first corrugated pipe body and the second corrugated pipe body;
and the fasteners are arranged on the corresponding sliding parts, are detachably connected with the sliding parts and are used for keeping the length of the sliding parts unchanged after the sliding of the sliding parts is finished.
As some of these embodiments, the slider comprises:
the first end of the sliding sleeve is connected with one limiting ring;
the first end of the sliding rod penetrates through the second end of the sliding sleeve and is arranged to slide in the sliding sleeve, and the second end of the sliding rod is connected with the other limiting ring;
the limiting groove is formed in the sliding sleeve, and the fastening piece is arranged inside the limiting groove in a sliding manner;
and the fastening groove is formed in the sliding rod and detachably connected with the corresponding fastening piece.
As some of these embodiments, the fastener is a fastening bolt.
In conclusion, the beneficial technical effects are as follows:
through setting up first corrugated pipe body and second corrugated pipe body, and first interface is central symmetry setting with the axis of second corrugated pipe body along the second corrugated pipe body with the second interface, the body itself of first corrugated pipe body seals the second kneck, the body itself of second corrugated pipe body seals first kneck, double sealing makes the sealed effect of the high vacuum bellows of this application compare in prior art better.
Drawings
Fig. 1 is a schematic half-sectional view of a structure of a high vacuum bellows in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a high vacuum bellows in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the mounting member in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a limiting member in an embodiment of the present invention.
Reference numerals are as follows:
1. a first bellows body; 11. a first interface; 12. a second interface; 2. a second bellows body; 3. a connecting member; 31. connecting blocks; 32. connecting grooves; 4. a flange; 5. a mounting member; 51. a mounting ring; 52. mounting a rod; 6. a limiting member; 61. a limiting ring; 62. mounting grooves; 63. a slider; 64. a fastener.
Detailed Description
The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those of ordinary skill in the art without any inventive work based on the embodiments in the present application belong to the protection scope of the present application.
In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be 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 application can be understood in a specific case by those of ordinary skill in the art.
Examples
As shown in fig. 1-4, the present invention discloses a high vacuum bellows, which is applied to a high vacuum system and comprises a first bellows body 1, a second bellows body 2, a connecting member 3 and two flanges 4. Wherein, the first bellows body 1 has a first port 11; the second corrugated pipe body 2 is coaxially arranged on the inner side of the first corrugated pipe body 1 and is tightly attached to the first corrugated pipe body 1, the second corrugated pipe body 2 is provided with a second interface 12, and the first interface 11 and the second interface 12 are arranged in a central symmetry mode along the axis of the second corrugated pipe body 2; the connecting piece 3 is arranged between the first corrugated pipe body 1 and the second corrugated pipe body 2, so that the first corrugated pipe body 1 and the second corrugated pipe body 2 are detachably connected; the two flanges 4 are symmetrically disposed at two ends of the second corrugated pipe body 2, and are respectively connected to the second corrugated pipe body 2.
Wherein the flange 4 is an NW flange 4.
The second interface 12 and the first interface 11 have the same length, and are both welding interfaces.
The manufacturing process of the first corrugated pipe body 1 and the second corrugated pipe body 2 is as follows: after the first corrugated pipe body 1 in a sheet shape is rolled into a cylinder shape, the first connector 11 is welded; after the second corrugated pipe body 2 in a sheet shape is connected with the first corrugated pipe body 1 through the connecting piece 3, the second corrugated pipe body 2 is rolled into a cylinder shape, and the second connector 12 is welded; and then, performing hydraulic pressure on the first corrugated pipe body 1 and the second corrugated pipe body 2 which are in a cylindrical shape and connected together to finish the manufacture of the molded corrugated pipe.
Even the untight condition of welding appears in first interface 11/second interface 12, because first interface 11 is central symmetry setting with second interface 12 along the axis of second bellows body 2, the body itself of first bellows body 1 seals second interface 12 department, and the body itself of second bellows body 2 seals 11 departments of first interface, and double sealing makes the sealed effect of the high vacuum bellows of this application compare in prior art better.
As some of these embodiments, the connecting member 3 comprises a number of connecting blocks 31 and a number of connecting slots 32. Wherein, a plurality of connecting blocks 31 are distributed and fixed on the inner side of the first corrugated pipe body 1; the connecting grooves 32 are distributed on the outer side of the second corrugated pipe body 2 and are correspondingly clamped with the connecting blocks 31 respectively.
Wherein the number of the connection blocks 31 is the same as the number of the connection grooves 32.
As some embodiments, the number of the connecting slots 32 is six, the six connecting slots 32 are divided into 2 groups by 3 connecting slots 32, and each three connecting slots 32 are opened on the outer side of the second bellows body 2 in a circular array.
As some of the embodiments, two mounting members 5 and a limiting member 6 are further included. The two mounting pieces 5 are symmetrically arranged at two ends of the second corrugated pipe body 2, and the mounting pieces 5 are fixedly sleeved on the corresponding flanges 4; the limiting part 6 is arranged between the two mounting parts 5 and detachably connected with the two mounting parts 5 respectively, and is used for keeping the length of the first corrugated pipe body 1 and the second corrugated pipe body 2 after the first corrugated pipe body 1 and the second corrugated pipe body 2 stretch along the axis of the first corrugated pipe body and the second corrugated pipe body 2.
Further, the mounting 5 comprises a mounting ring 51 and several mounting rods 52. Wherein, the mounting ring 51 is sleeved and fixed on the corresponding flange 4; a plurality of mounting rods 52 are distributed and fixed on the mounting ring 51 and detachably connected with the limiting member 6.
Wherein the number of mounting rods 52 is 3.
Wherein the mounting rods 52 are fixed and mounted to the ring 51 in an annular array.
Wherein the outer diameter of the mounting ring 51 is larger than the outer diameter of the end of the flange 4; the inner diameter of the mounting ring 51 is equal to the outer diameter of the cylinder of the flange 4.
Further, the position-limiting member 6 includes two position-limiting rings 61, a plurality of mounting grooves 62, a plurality of sliding members 63, and a plurality of fastening members 64. Wherein, the two limit rings 61 are coaxially arranged; the mounting grooves 62 are distributed on the limiting ring 61 and are detachably connected with the mounting rods 52; the sliding pieces 63 are distributed between the two limiting rings 61 and are arranged to slide along the axis of the second corrugated pipe body 2 so as to change the length of the sliding pieces 63, and further adapt to the length of the first corrugated pipe body 1 and the second corrugated pipe body 2 extending and contracting along the axis; the fastening member 64 is disposed on the corresponding sliding member 63, and detachably connected to the sliding member 63, for maintaining the length of the sliding member 63 after the sliding member 63 is completely slid.
The number of the mounting grooves 62 is the same as that of the mounting rods 52, and the mounting grooves are clamped with the mounting rods 52 in a one-to-one correspondence manner.
The inner diameter of the limiting ring 61 is larger than the outer diameter of the end of the flange 4 and smaller than the outer diameter of the mounting ring 51, and the outer diameter of the limiting ring 61 is larger than the outer diameter of the mounting ring 51.
Further, the sliding member 63 includes a sliding sleeve, a sliding rod, a stopper groove, and a fastening groove. Wherein, the first end of the sliding sleeve is connected with one of the limit rings 61; the first end of the sliding rod penetrates through the second end of the sliding sleeve and is arranged to slide in the sliding sleeve, and the second end of the sliding rod is connected with the other limiting ring 61; the limiting groove is formed in the sliding sleeve, and a fastening piece 64 is arranged inside the limiting groove in a sliding mode; the fastening slots are open to the sliding bar and are detachably connected to the corresponding fasteners 64.
Further, the fastener 64 is a fastening bolt.
The principle of use of this embodiment is as follows:
the first interface 11/the second interface 12 are not welded tightly, because the first interface 11 and the second interface 12 are arranged in central symmetry along the axis of the second corrugated pipe body 2, the pipe body of the first corrugated pipe body 1 seals the second interface 12, and the pipe body of the second corrugated pipe body 2 seals the first interface 11, the double sealing makes the sealing effect of the high vacuum corrugated pipe better than that of the prior art;
after this application is applied to high vacuum system, when first bellows body 1 and the tensile completion of second bellows body 2 to certain length, take the slide bar out from the inside of the slip cap, make the spacing ring 61 of being connected with the slip cap embolia this flange 4 from the tip of one of them flange 4, and through mounting groove 62 and installation pole 52 joint, be connected spacing ring 61 with collar 51, the spacing ring 61 of being connected with the slide bar is connected with the collar 51 of opposite side with same mode, the slide bar stretches into the slip cap, and get into the tighrening slot through fastening bolt from the spacing groove and carry out threaded connection, realize the rigidity of slide bar and slip cap, and then make the high vacuum bellows keep along the tensile length of axis.
The advantages of this embodiment are: through setting up first corrugated pipe body and second corrugated pipe body, and first interface is central symmetry setting with the second interface along the axis of second corrugated pipe body, and the body itself of first corrugated pipe body seals the second kneck, and the body itself of second corrugated pipe body seals first kneck, and double sealing makes the sealed effect of the high vacuum bellows of this application compare in prior art better.
The embodiment of this embodiment is the preferred embodiment of the present invention, not so limited the protection scope of the present invention, and can be mutually combined to use between the above-mentioned embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A high vacuum bellows for use in a high vacuum system, comprising:
a first bellows body (1), the first bellows body (1) having a first connection (11);
the second corrugated pipe body (2) is coaxially arranged on the inner side of the first corrugated pipe body (1), and is tightly attached to the first corrugated pipe body (1), the second corrugated pipe body (2) is provided with a second interface (12), and the first interface (11) and the second interface (12) are arranged in a central symmetry mode along the axis of the second corrugated pipe body (2);
the connecting piece (3) is arranged between the first corrugated pipe body (1) and the second corrugated pipe body (2), so that the first corrugated pipe body (1) and the second corrugated pipe body (2) are detachably connected;
the two flanges (4) are symmetrically arranged at two ends of the second corrugated pipe body (2) and are respectively connected with the second corrugated pipe body (2).
2. A high vacuum bellows according to claim 1, wherein the connection (3) comprises:
the connecting blocks (31) are fixed on the inner side of the first corrugated pipe body (1) in a distributed manner;
a plurality of spread groove (32), a plurality of spread groove (32) distribute and set up in the outside of second corrugated pipe body (2), and respectively with a plurality of connecting block (31) carry out corresponding joint.
3. A high vacuum bellows according to claim 1, wherein the second port (12) and the first port (11) are of the same length and are both welded ports.
4. The high vacuum bellows of claim 1, further comprising:
the two mounting pieces (5) are symmetrically arranged at two ends of the second corrugated pipe body (2), and the mounting pieces (5) are fixedly sleeved on the corresponding flanges (4);
the limiting pieces (6) are arranged between the two mounting pieces (5) and are detachably connected with the two mounting pieces (5) respectively, and the limiting pieces (6) enable the first corrugated pipe body (1) and the second corrugated pipe body (2) to keep the length of the second corrugated pipe body (2) after the first corrugated pipe body (1) and the second corrugated pipe body (2) stretch along the axis of the second corrugated pipe body.
5. A high vacuum bellows according to claim 4, wherein the mounting (5) comprises:
the mounting ring (51), the said mounting ring (51) is fixed to the said corresponding said flange (4) in the cover;
the mounting rods (52) are distributed and fixed on the mounting ring (51) and detachably connected with the limiting piece (6).
6. A high vacuum bellows according to claim 5, wherein the stop (6) comprises:
the two limiting rings (61), the two limiting rings (61) are coaxially arranged;
the mounting grooves (62) are distributed on the limiting ring (61) and are detachably connected with the mounting rods (52);
the sliding parts (63) are distributed between the two limiting rings (61) and can slide along the axis of the second corrugated pipe body (2) to change the length of the sliding parts (63) so as to adapt to the length of the first corrugated pipe body (1) and the second corrugated pipe body (2) stretching along the axis;
the fasteners (64) are arranged on the corresponding sliding parts (63) and are detachably connected with the sliding parts (63) and used for keeping the length of the sliding parts (63) unchanged after the sliding parts (63) finish sliding.
7. A high vacuum bellows according to claim 6, wherein the slide (63) comprises:
the first end of the sliding sleeve is connected with one limiting ring (61);
the first end of the sliding rod penetrates through the second end of the sliding sleeve and is arranged to slide in the sliding sleeve, and the second end of the sliding rod is connected with the other limiting ring (61);
the limiting groove is formed in the sliding sleeve, and the fastening piece (64) is arranged in the limiting groove in a sliding mode;
and the fastening groove is formed in the sliding rod and is detachably connected with the corresponding fastening piece (64).
8. A high vacuum bellows according to claim 6, wherein the fastener (64) is a fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222749614.2U CN218441059U (en) | 2022-10-19 | 2022-10-19 | High vacuum bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222749614.2U CN218441059U (en) | 2022-10-19 | 2022-10-19 | High vacuum bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218441059U true CN218441059U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222749614.2U Active CN218441059U (en) | 2022-10-19 | 2022-10-19 | High vacuum bellows |
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| Country | Link |
|---|---|
| CN (1) | CN218441059U (en) |
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- 2022-10-19 CN CN202222749614.2U patent/CN218441059U/en active Active
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