CN220688327U - High-sealing vacuum flange - Google Patents

Abstract

The utility model provides a high-sealing vacuum flange, which relates to the technical field of flanges and comprises an upper flange, wherein a lower flange is arranged at the bottom of the upper flange, a sealing device is arranged between the upper flange and the lower flange, fixing devices are sleeved on the peripheries of the upper flange and the lower flange, an upper pipeline is arranged at the top end of the upper flange, the upper pipeline extends into the upper flange, a lower pipeline is arranged at the bottom of the lower flange, the lower pipeline extends into the lower flange, the sealing device comprises a first limiting ring and a second limiting ring, limiting grooves are formed in the outer side walls corresponding to the first limiting ring and the second limiting ring, a sealing ring is arranged between the two limiting grooves, the fixing devices comprise a first fixing plate and a second fixing plate, threaded holes are formed in the positions, close to corners, of the first fixing plate and the second fixing plate, and compared with the existing high-sealing vacuum flange, the protection and the practicability of the high-sealing vacuum flange are improved.

Description

High-sealing vacuum flange

Technical Field

The utility model relates to the technical field of flanges, in particular to a high-sealing vacuum flange.

Background

Flanges, also called flange collars or lugs, which are parts of the shaft-to-shaft connection for connection between pipe ends, and also useful flanges on equipment inlets and outlets for connection between two pieces of equipment, such as flanges, or;

the CVD vacuum furnace pipeline connection is basically connected by flanges for convenient disassembly and assembly, but the conventional flange connection mode is often accompanied by high temperature, when the conventional flange connection mode is in a high-temperature environment for a long time, the mechanical properties of materials such as bolts and the like can be reduced due to high temperature, creep and stress relaxation can also occur, and the tightening force of the bolts is reduced, so that the compression amount of the flange to a gasket is reduced to leak, and therefore, the high-sealing vacuum flange is provided.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, when the existing flange connection mode is in a high-temperature environment for a long time, the mechanical properties of materials such as bolts and the like can be reduced due to high temperature, creep and stress relaxation can also occur, and the tightening force of the bolts is reduced, so that the compression amount of the flange on a gasket is reduced to leak.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the high-sealing vacuum flange comprises an upper flange, wherein a lower flange is arranged at the bottom of the upper flange, a sealing device is arranged between the upper flange and the lower flange, fixing devices are sleeved on the peripheries of the upper flange and the lower flange, an upper pipeline is arranged at the top end of the upper flange and extends into the upper flange, a lower pipeline is arranged at the bottom of the lower flange, and the lower pipeline extends into the lower flange;

the sealing device comprises a first limiting ring and a second limiting ring, limiting grooves are formed in the outer side walls of the first limiting ring and the second limiting ring, which correspond to each other, and a sealing ring is arranged between the two limiting grooves;

the fixing device comprises a first fixing plate and a second fixing plate, threaded holes are formed in the first fixing plate and the second fixing plate, which are close to the corners, through holes, fixing bolts are arranged in the threaded holes, and fixing grooves are formed in the first fixing plate and the second fixing plate, which are close to the front sides.

As a preferable scheme of the utility model, the upper pipeline corresponds to the lower pipeline, and the upper pipeline is communicated with the lower pipeline through a sealing device.

The technical effect of adopting the further scheme is as follows: when in conveying, the upper pipeline and the lower pipeline are communicated through the sealing device, so that the tightness of the flange assembly can be better improved.

As a preferred solution of the present utility model, the fixing groove is adapted to the upper pipe and the lower pipe.

The technical effect of adopting the further scheme is as follows: when fixing flange subassembly, through fixed recess installation first fixed plate and second fixed plate, can be more stable and convenient.

As a preferable scheme of the utility model, the sealing ring is made of fluororubber material.

The technical effect of adopting the further scheme is as follows: the CVD vacuum furnace has higher common temperature in working, and the sealing ring made of fluororubber material has longer service life and better sealing property.

As a preferable scheme of the utility model, the upper flange and the lower flange are fixed through bolts.

The technical effect of adopting the further scheme is as follows: the flange component fixedly connected through the bolts can be more stable.

As a preferable scheme of the utility model, the fixing bolt is in threaded connection with the threaded hole.

The technical effect of adopting the further scheme is as follows: the flange component is fixed in a threaded connection mode, the whole flange component not only has a fixing effect, but also has a pressurizing force application effect, and the tightness of the flange component is improved.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through the design of the limiting groove, the sealing ring, the first fixing plate, the second fixing plate and the fixing bolts, when the tension force of the bolts used for fixing inside the connecting flange is reduced due to the fact that the connecting flange is in a high-temperature environment for a long time, the first fixing plate and the second fixing plate continuously apply pressure to the upper flange and the lower flange through the fixing bolts, the upper flange and the lower flange apply pressure to the sealing ring, the sealing ring is limited by the limiting groove to transversely act, the continuous sealing of the connecting flange is realized, the leakage of conveying raw materials is prevented, and the protectiveness and the practicability of the high-sealing vacuum flange are improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a high-sealing vacuum flange provided by the utility model;

FIG. 2 is an overall structural anatomic view of a high-seal vacuum flange provided by the utility model;

fig. 3 is a schematic diagram of an upper flange structure of a high-sealing vacuum flange provided by the utility model.

Legend description: 1. an upper flange; 101. an upper pipeline; 2. a lower flange; 201. a lower pipeline; 3. a sealing device; 301. a first stop collar; 302. a second limiting ring; 303. a limit groove; 304. a seal ring; 4. a fixing device; 401. a first fixing plate; 402. a second fixing plate; 403. a tapped hole; 404. a fixing bolt; 405. and a fixing groove.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are, however, not limited to the embodiments described herein, but are to be provided for the purpose of making the disclosure of the utility model more thorough.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Example 1

As shown in fig. 1-3, the present utility model provides a technical solution: the utility model provides a high sealed vacuum flange, including last flange 1, the bottom of going up flange 1 is provided with flange 2 down, be provided with sealing device 3 between last flange 1 and the flange 2 down, sealing device 3 can play sealed effect between last flange 1 and flange 2 down, go up flange 1 and the peripheral cover of flange 2 down are equipped with fixing device 4, fixing device 4 can fix last flange 1 and flange 2 down, the top of going up flange 1 is provided with pipeline 101, go up the inside that pipeline 101 extends to last flange 1, the bottom of flange 2 is provided with pipeline 201 down, pipeline 201 extends to the inside of flange 2 down, sealing device 3 includes first spacing ring 301 and second spacing ring 302, first spacing ring 301 and second spacing ring 302 can cooperate sealing washer 304 to seal, all set up spacing groove 303 on the corresponding lateral wall of first spacing ring 301 and second spacing ring 302, spacing groove 303 can block sealing washer 304, be provided with sealing washer 304 between two spacing grooves 303, the effect that the sealing washer 304 can play seals, fixing device 4 includes first fixed plate 401 and second fixed plate 403, the fixed plate 403 is close to first fixed plate 403 and second fixed plate 402 are close to first fixed plate 403 and second fixed plate 401 and fixed plate 402 are equipped with screw-thread holes 405 and fixed plate 404 are all set up to fixed plate and fixed plate 404, the position is close to fixed plate and fixed plate position is fixed with screw-thread holes 401 are all fixed to fixed plate 404.

Example 2

As shown in fig. 1-3, the upper pipeline 101 corresponds to the lower pipeline 201, the upper pipeline 101 is communicated with the lower pipeline 201 through the sealing device 3, when in conveying, the upper pipeline 101 is communicated with the lower pipeline 201 through the sealing device 3, the tightness of the flange assembly can be better improved, the fixing groove 405 is matched with the upper pipeline 101 and the lower pipeline 201, when the flange assembly is fixed, the first fixing plate 401 and the second fixing plate 402 are installed through the fixing groove 405, the stability and convenience can be improved, the sealing ring 304 is made of fluororubber materials, the common temperature of the CVD vacuum furnace is higher in working, the service life of the sealing ring 304 made of the fluororubber materials is longer, the tightness is better, the upper flange 1 and the lower flange 2 are fixed through bolts, the flange assembly fixedly connected through the bolts can be more stable, the fixing bolts 404 are in threaded connection with the threaded holes 403, the whole flange assembly not only plays a role in fixing, but also plays a role in applying a pressurizing force, and the tightness of the flange assembly is improved.

The working flow of the utility model is as follows: when a high-sealing vacuum flange is used, firstly, when the tension force of bolts used for fixing inside the connecting flange is reduced because the connecting flange is in a high-temperature environment for a long time, the first fixing plate 401 and the second fixing plate 402 are in a threaded connection state before being kept because of the fixing bolts 404 and the threaded holes 403, so that the upper flange 1 and the lower flange 2 are continuously applied with pressure from above and below at the same time, the upper flange 1 and the lower flange 2 are respectively applied with pressure from above and below to the first limiting ring 301, the second limiting ring 302 and the sealing ring 304, and the sealing ring 304 is limited by the transverse effect through the limiting grooves 303, so that the sealing of the connecting flange is continuously carried out.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a high sealed vacuum flange, includes flange (1), its characterized in that: the bottom of the upper flange (1) is provided with a lower flange (2), a sealing device (3) is arranged between the upper flange (1) and the lower flange (2), fixing devices (4) are sleeved on the peripheries of the upper flange (1) and the lower flange (2), an upper pipeline (101) is arranged at the top end of the upper flange (1), the upper pipeline (101) extends to the inside of the upper flange (1), a lower pipeline (201) is arranged at the bottom of the lower flange (2), and the lower pipeline (201) extends to the inside of the lower flange (2);

the sealing device (3) comprises a first limiting ring (301) and a second limiting ring (302), limiting grooves (303) are formed in the outer side walls of the first limiting ring (301) and the second limiting ring (302) which correspond to each other, and sealing rings (304) are arranged between the two limiting grooves (303);

the fixing device (4) comprises a first fixing plate (401) and a second fixing plate (402), threaded holes (403) are formed in the first fixing plate (401) and the second fixing plate (402) in a penetrating mode close to corners, fixing bolts (404) are arranged in the threaded holes (403), and fixing grooves (405) are formed in the first fixing plate (401) and the second fixing plate (402) close to the front face.

2. A high seal vacuum flange according to claim 1, characterized in that: the upper pipeline (101) corresponds to the lower pipeline (201), and the upper pipeline (101) is communicated with the lower pipeline (201) through the sealing device (3).

3. A high seal vacuum flange according to claim 1, characterized in that: the fixing groove (405) is matched with the upper pipeline (101) and the lower pipeline (201).

4. A high seal vacuum flange according to claim 1, characterized in that: the sealing ring (304) is made of fluororubber material.

5. A high seal vacuum flange according to claim 1, characterized in that: the upper flange (1) and the lower flange (2) are fixed through bolts.

6. A high seal vacuum flange according to claim 1, characterized in that: the fixing bolt (404) is in threaded connection with the threaded hole (403).