CN216590467U - Take seal structure's evacuation bellows - Google Patents

Abstract

The utility model provides a vacuum-pumping corrugated pipe with a sealing structure. Take seal structure's evacuation bellows includes: vacuum bellows body, two connectors and two flange, two the connector is fixed mounting respectively in the both ends of vacuum bellows body, and two flange fixed mounting is respectively two one side, two that the connector was kept away from each other first annular and second annular have all been seted up to one side that flange kept away from each other, first annular is located in the second annular, two first annular all bonds and has had first sealing ring, two in the second annular all be equipped with the second sealing ring, two equal movable sleeve is equipped with ring cover one in the second annular. The vacuum-pumping corrugated pipe with the sealing structure has the advantages of good sealing effect, long sealing maintaining time and capability of reducing overhaul times.

Description

Take seal structure's evacuation bellows

Technical Field

The utility model relates to the technical field of corrugated pipes, in particular to a vacuumizing corrugated pipe with a sealing structure.

Background

The corrugated pipe is a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and stretching direction, and mainly comprises a metal corrugated pipe, a corrugated expansion joint, a corrugated heat exchange pipe, a metal hose and the like. The metal corrugated pipe is mainly applied to the effects of compensating the thermal deformation of the pipeline, damping, absorbing the settlement deformation of the pipeline and the like, is widely applied to the industries of gas and liquid transportation and the like in petrochemical industry, aerospace industry, chemical industry, electric power, metallurgy and ultrahigh vacuum environment, is generally made of stainless steel materials in the ultrahigh vacuum environment, and is simple to manufacture and low in cost.

However, this kind of traditional vacuum bellows in use discovers, because its inside most only sets up a sealing ring and reaches sealed effect, this just leads to under the expend with heat and contract with cold condition, the sealing ring probably dwindles to make the sealed effect greatly reduced of sealing ring, also corresponding increase the great maintenance number of times of later stage engineering volume, the in-service use effect is relatively poor.

Therefore, it is necessary to provide a vacuum bellows with a sealing structure to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of providing the vacuumizing corrugated pipe with the sealing structure, which has good sealing effect and longer sealing maintaining time and can reduce the overhaul times.

In order to solve the above technical problems, the present invention provides a vacuum bellows with a sealing structure, comprising: the vacuum corrugated pipe comprises a vacuum corrugated pipe body, two connectors and two connecting flanges, wherein the two connectors are fixedly installed at two ends of the vacuum corrugated pipe body respectively, and the two connecting flanges are fixedly installed at one sides, away from each other, of the two connectors respectively; two ring sleeves II are respectively slidably sleeved on the two connecting heads, two push rods are fixedly mounted on the sides, away from each other, of the two ring sleeves II, one ends of the corresponding two push rods extend into the corresponding second ring grooves and are fixedly connected with the corresponding ring sleeves I, the push rods are slidably connected with the connecting flanges, and three positioning grooves are formed in the four push rods; two all be equipped with screens mechanism on the flange, screens mechanism with the positioning groove is pegged graft mutually.

Preferably, two equal fixed mounting in one side that flange is close to each other has two bracing pieces, corresponding two the bracing piece all runs through corresponding ring sleeve two and with corresponding ring sleeve two sliding connection, the cover is equipped with spring one on the bracing piece, the one end of spring one with ring sleeve two fixed connection, the other end of spring one with flange fixed connection.

Preferably, the screens mechanism includes two slide bars, two the equal fixed mounting of one end that the slide bar is close to each other has the screens head, two the one end that the screens head is close to each other all extends to corresponding in the positioning groove in order to form the grafting.

Preferably, two supporting plates are fixedly mounted on one side, close to each other, of each of the two connecting flanges, four sliding rods penetrate through the corresponding supporting plates and are in sliding connection with the corresponding supporting plates, linkage plates are fixedly sleeved on the four sliding rods, and the four linkage plates are in sliding connection with the corresponding connecting flanges.

Preferably, four sliding rods are sleeved with a second spring, and two ends of the second spring are fixedly connected with the supporting plate and the linkage plate respectively.

Preferably, two limiting grooves are formed in one side, close to each other, of each connecting flange, four limiting plates are rotatably mounted on the sliding rods, and the limiting plates are matched with the limiting grooves.

Preferably, two sliding holes are formed in each of the two connecting flanges, the corresponding two sliding holes are communicated with the corresponding second annular grooves, and the four ejector push rods penetrate through the corresponding sliding holes and are in sliding connection with the corresponding inner walls of the sliding holes.

Compared with the related art, the vacuum-pumping corrugated pipe with the sealing structure provided by the utility model has the following beneficial effects:

the utility model provides a vacuumizing corrugated pipe with a sealing structure, which limits and improves the sealing effect of the device through two-layer sealing of a first sealing ring and a second sealing ring, and can press a second ring sleeve when the first sealing ring and the second sealing ring shrink at the later stage, and the second sealing ring is forcibly extruded by using a push rod and the second ring sleeve, so that the second sealing ring deforms and can be abutted against an external connecting piece and the side walls of the inner ring and the outer ring of a second ring groove, the sealing effect can be ensured, the times of overhaul of a worker on the device can be reduced, and the whole operation is simple and rapid, and the using effect is good.

Drawings

FIG. 1 is a schematic front view of a vacuum bellows with a sealing structure according to the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is an enlarged schematic view of a portion B shown in fig. 2.

Reference numbers in the figures: 1. a vacuum bellows body; 2. a connector; 3. a connecting flange; 4. a first ring groove; 5. a first seal ring; 6. a second ring groove; 7. a second seal ring; 8. sleeving a ring sleeve I; 9. a second ring sleeve; 10. pushing the push rod; 11. a support bar; 12. a first spring; 13. a positioning groove; 14. a slide bar; 15. a position clamping head; 16. and a second spring.

Detailed Description

The utility model is further described with reference to the following figures and embodiments.

The first embodiment:

referring to fig. 1-3 in combination, the vacuum bellows with a sealing structure includes: a vacuum corrugated pipe body 1, two connectors 2 and two connecting flanges 3, wherein the two connectors 2 are respectively fixedly arranged at two ends of the vacuum corrugated pipe body 1, and the two connecting flanges 3 are respectively and fixedly arranged at the sides far away from the two connectors 2, the sides far away from the two connecting flanges 3 are both provided with a first annular groove 4 and a second annular groove 6, the first ring grooves 4 are positioned in the second ring grooves 6, first sealing rings 5 are respectively bonded in the two first ring grooves 4, second sealing rings 7 are respectively arranged in the two second ring grooves 6, a first ring sleeve 8 is movably sleeved in the two second ring grooves 6, the size of the first ring sleeve 8 is matched with that of the second sealing ring 7, the first ring sleeve can automatically and horizontally slide in the first ring grooves without clamping a shell, and the two first ring sleeves 8 are respectively bonded with the corresponding second sealing rings 7; the two connectors 2 are respectively sleeved with a second ring sleeve 9 in a sliding manner, two handles are fixed on the second ring sleeve 9, so that people can conveniently press the second ring sleeve 9, two push rods 10 are fixedly installed on the sides, far away from each other, of the two second ring sleeves 9, one ends of the two corresponding push rods 10 extend into the corresponding second ring grooves 6 and are fixedly connected with the corresponding first ring sleeves 8, the push rods 10 are connected with the connecting flange 3 in a sliding manner, three positioning grooves 13 are formed in the four push rods 10, the three positioning grooves 13 are distributed in a linear array manner, the distance between every two adjacent positioning grooves 13 is extremely short, and the requirement for the extrusion position of the second sealing ring 7 under multiple reduction degrees can be met; two all be equipped with screens mechanism on flange 3, screens mechanism with positioning groove 13 pegs graft mutually, screens head 15 in the screens mechanism can with positioning groove 13 between form the block to can restrict ejector pin 10, make it can not take place the nature and kick-back, guarantee the extrusion effect to second sealing ring 7.

Two equal fixed mounting in one side that flange 3 is close to each other has two bracing pieces 11, is fixed with the stopper at the one end that bracing piece 11 is close to vacuum bellows body 1 to prevent to take place to separate, corresponding two between ring cover two 9 and the bracing piece 11 all runs through the correspondence ring cover two 9 and with correspond ring cover two 9 sliding connection, the cover is equipped with spring one 12 on the bracing piece 11, the one end of spring one 12 with ring cover two 9 fixed connection, the other end of spring one 12 with flange 3 fixed connection, spring one 12 can provide the resilience function for ring cover two 9, makes when unloading the grafting between screens head 15 and the positioning groove 13, and it can return to the initial position automatically, makes things convenient for subsequent normal use.

The screens mechanism includes two slide bars 14, two the equal fixed mounting of one end that slide bar 14 is close to each other has screens head 15, two the one end that screens head 15 is close to each other all extends to corresponding in the positioning groove 13 in order to form pegging graft, screens head 15 and positioning groove 13's size looks adaptation, and the two is pegged graft closely, can not take place to become flexible.

Two equal fixed mounting in one side that flange 3 is close to each other has two extension boards, four slide bar 14 all runs through the correspondence the extension board and with correspond extension board sliding connection, four all fixed cover is equipped with linkage plate on the slide bar 14, and four linkage plate all with correspond flange 3 sliding connection has all seted up two spouts on two flange 3, and equal slidable mounting has the slider in four spouts, and four sliders just and the linkage plate fixed connection who corresponds alright like this form the restriction to slide bar 14, make it can not take place to rotate, can only carry out linear elevating movement.

Four slide bars 14 all are equipped with spring two 16 on the cover, the both ends of spring two 16 respectively with extension board and linkage plate fixed connection, spring two 16 can bring clamping head 15 into positioning groove 13 automatically on the one hand, and convenient degree is higher, and on the other hand can be with its tight card in positioning groove 13 again, improves grafting stability.

Two limiting grooves are formed in one side, close to each other, of each of the two connecting flanges 3, limiting plates are rotatably mounted on the four sliding rods 14 and are matched with the limiting grooves, clamping limitation can be formed between the limiting plates and the limiting grooves, so that when the clamping head 15 is pulled out of the positioning groove 13, the limiting plates can be rotated into the limiting grooves to form position limitation, and people can conveniently use hands to operate the next flow.

Two sliding holes are formed in the two connecting flanges 3, the corresponding two sliding holes are communicated with the corresponding second annular grooves 6, and the four push rods 10 penetrate through the corresponding sliding holes and are connected with the corresponding inner walls of the sliding holes in a sliding mode.

The second embodiment:

the working principle of the vacuum-pumping corrugated pipe with the sealing structure provided by the utility model is as follows:

in a normal use state of the device, the two connecting flanges 3 are fixedly connected with the connecting piece of an external part through bolts, and the first sealing ring 5 and the second sealing ring 7 on the connecting flanges are abutted against the external connecting piece, so that a good sealing effect is formed;

in the later use, if the first sealing ring 5 and the second sealing ring 7 are integrally shrunk due to expansion with heat and contraction with cold, so that the sealing effect is reduced, one limiting plate is pulled firstly, the corresponding clamping head 15 is pulled out of the corresponding positioning groove 13, after the limiting plate is pulled to the position aligned with the corresponding limiting groove, the limiting plate is rotated and clamped in the limiting groove, so that the next operation is conveniently carried out by people, the second spring 16 is in a compressed state, and then the other four clamping heads 15 are all pulled out of the corresponding positioning grooves 13 in the same way;

then one of the ring sleeves two 9 is pressed, and is pressed towards the corresponding connecting flange 3, at the moment, the corresponding two push rods 10 can drive the corresponding ring sleeve one 8 to move horizontally, so that the ring sleeve one 8 can extrude the second sealing ring 7, the second sealing ring 7 begins to deform, and along with the continuous pushing of the push rods 10, the deformation degree of the second sealing ring 7 becomes deeper and deeper, until the push rods are not pushed, at the moment, the second sealing ring 7 is tightly abutted by external connecting pieces, and the inner side of the second sealing ring 7 is tightly abutted by the inner and outer ring side walls of the second ring groove 6, so that the sealing effect is achieved again, meanwhile, under the state of the push rods 10, the corresponding clamping heads 15 are formed corresponding to other positioning grooves 13 again, then the four limiting plates are rotated, rotated out of the limiting grooves and loosened, and under the action of the spring two 16, the clamping heads 15 can be clamped into the corresponding positioning grooves 13, then the second ring sleeve 9 is loosened, and then the other second ring sleeve 9 is pressed in the same way, and the other second sealing ring 7 is operated in the same way, so that the sealing effect of the device can be ensured simply and quickly.

Compared with the related art, the vacuum-pumping corrugated pipe with the sealing structure provided by the utility model has the following beneficial effects:

this device is through the two-layer of first sealing ring 5 and second sealing ring 7 sealed, make the sealed effect of this device obtain the restriction promotion, and, in the later stage when first sealing ring 5 and second sealing ring 7 all appear shrinking, alright press down ring cover two 9, utilize ejector pin 10 and ring cover 8 to extrude second sealing ring 7 by force, thereby make it produce deformation and can conflict with the interior outer ring lateral wall of external connection spare and second annular 6, thereby can guarantee sealed effect, the number of times that the staff overhauld this device has just so been reduced, whole easy operation is swift, excellent in use effect.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. The vacuumizing corrugated pipe with the sealing structure comprises a vacuum corrugated pipe body, two connectors and two connecting flanges, wherein the two connectors are fixedly installed at the two ends of the vacuum corrugated pipe body respectively, and the two connecting flanges are fixedly installed at one sides, away from each other, of the two connectors respectively;

two ring sleeves II are respectively slidably sleeved on the two connecting heads, two push rods are fixedly mounted on the sides, away from each other, of the two ring sleeves II, one ends of the corresponding two push rods extend into the corresponding second ring grooves and are fixedly connected with the corresponding ring sleeves I, the push rods are slidably connected with the connecting flanges, and three positioning grooves are formed in the four push rods;

two all be equipped with screens mechanism on the flange, screens mechanism with the positioning groove is pegged graft mutually.

2. The evacuated corrugated tube with the sealing structure according to claim 1, wherein two support rods are fixedly installed on the sides of the two connection flanges close to each other, the two corresponding support rods penetrate through the corresponding second ring sleeves and are slidably connected with the corresponding second ring sleeves, a first spring is sleeved on each support rod, one end of the first spring is fixedly connected with the second ring sleeves, and the other end of the first spring is fixedly connected with the connection flanges.

3. The evacuated corrugated tube with the sealing structure according to claim 1, wherein the clamping mechanism comprises two sliding rods, one ends of the two sliding rods close to each other are fixedly provided with clamping heads, and one ends of the two clamping heads close to each other extend into the corresponding positioning grooves to form insertion connection.

4. The evacuated corrugated tube with the sealing structure according to claim 3, wherein two support plates are fixedly installed on the sides of the two connecting flanges close to each other, four sliding rods penetrate through the corresponding support plates and are slidably connected with the corresponding support plates, linkage plates are fixedly sleeved on the four sliding rods, and the four linkage plates are slidably connected with the corresponding connecting flanges.

5. The vacuum pumping corrugated pipe with the sealing structure as claimed in claim 4, wherein a second spring is sleeved on each of the four sliding rods, and two ends of each second spring are respectively and fixedly connected with the support plate and the linkage plate.

6. The vacuum pumping corrugated pipe with the sealing structure as claimed in claim 3, wherein two limiting grooves are formed on the sides of the two connecting flanges, which are close to each other, and limiting plates are rotatably mounted on the four sliding rods and are matched with the limiting grooves.

7. The vacuum pumping corrugated pipe with the sealing structure according to claim 1, wherein two sliding holes are formed in each of the two connecting flanges, the two corresponding sliding holes are communicated with the corresponding second annular grooves, and the four ejector rods penetrate through the corresponding sliding holes and are slidably connected with inner walls of the corresponding sliding holes.

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