CN204093981U - The exhaust apparatus of tube expander - Google Patents
The exhaust apparatus of tube expander Download PDFInfo
- Publication number
- CN204093981U CN204093981U CN201420543037.4U CN201420543037U CN204093981U CN 204093981 U CN204093981 U CN 204093981U CN 201420543037 U CN201420543037 U CN 201420543037U CN 204093981 U CN204093981 U CN 204093981U
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- actuating rod
- holder
- tube
- exhaust apparatus
- exhaust
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Abstract
The utility model relates to tube expansion technique, particularly a kind of exhaust apparatus of tube expander, be made up of feed liquor portion and holder, respectively there is clamping device, when expand tube, the clamping device of holder be sealedly and fixedly connected by the other end of swollen metal tube, feed liquor portion and holder include cylindrical actuating rod respectively, are shaped with axial exhaust ducts in the actuating rod outside left of holder; Be set with end shield outside actuating rod, both are slidably matched; End shield outer end and barrel-type casing outer end threaded engagement; The inner of actuating rod is shaped with flange; The inside line of the actuating rod of holder make can accommodating one-way valve structures hollow shape and communicated with described exhaust passage by check valve.Described one-way valve structures is the sealing surface that the interface of exhaust passage and spool forms check valve, and the rear end of spool is contacted by helical spring and cylindrical slider.The utility model can be discharged by air residual in expand tube from exhaust passage automatically, makes by pressure uniform in expand tube; Can automatically be locked by conical chuck, structure is simple, easy to operate.
Description
Technical field
The utility model relates to tube expansion technique, particularly a kind of exhaust apparatus of tube expander of electric tube expander, is specially adapted to the processing of heat exchanger or the test of metal tube.
Background technology
Existing electric tube expander is comparatively used for the processing of heat exchanger, drives expansion-head to make to fill gelled heat pipe be radially expanded and form interference fit, to reach the object of fin or tube sheet and heat pipe strong bonded by hydraulic pressure or motor.Expansion-head is made up of slightly larger than by the bulb of swollen metal tube internal diameter the diameter being loaded on expander roll top usually, and its expand tube process is gradual, and efficiency is lower, and just expanding by the top of expand tube, and tube wall is thinning, is unfavorable for follow-up assembling.Also have in addition and adopt hydraulic expanding tube technology, have expand tube efficiency high, have no mechanical damage, pipe do not produce the advantages such as axial elongation, but the problem existed is, starting to add man-hour, there is air by the inside of expand tube, to inject after highly pressurised liquid by the inner air of expand tube and liquid and deposit, when carrying out the pipe expand tube to tube wall is thinner, the phenomenon that the expanding inequality of easy generation even bursts, affects crudy.
Utility model content
The purpose of this utility model is the defect existed to overcome above-mentioned prior art, provides a kind of exhaust apparatus of tube expander.
The technical solution of the utility model is as follows:
A kind of exhaust apparatus of tube expander, comprise the holder with clamping device and barrel-type casing, when expand tube, holder is by clamping device and be sealedly and fixedly connected by one end of swollen metal tube, it is characterized in that described holder includes cylindrical actuating rod, be shaped with axial exhaust ducts in this actuating rod outside left and communicate with the external world; Be set with end shield outside described actuating rod, both are slidably matched; Described barrel-type casing is placed on outside end shield, this end shield outer end and described barrel-type casing outer end threaded engagement; The inside line of described actuating rod make can accommodating one-way valve structures cavity and communicated with described exhaust passage by check valve.
Described one-way valve structures is the sealing surface that the interface of exhaust passage and spool forms check valve, and the rear end of spool is contacted by helical spring and cylindrical slider.
Between the face of cylinder of described cylindrical slider and the hollow wall of holder actuating rod, there is gap, this gap is by less to air resistance and have the requirement of larger resistance to set to liquid, or connect an alms bowl body be made up of elastomeric material at the inner face of cylindrical slider, inwardly, cylindrical slider is identical with alms bowl body diameter for alms bowl mouth.
Respectively inner seal ring is housed at the inwall of end shield and back-up ring, with respectively with above-mentioned actuating rod and by the end seals of swollen metal tube.
The utility model has following advantage: 1, owing to arranging check valve and exhaust passage in holder, when being filled with highly pressurised liquid, highly pressurised liquid is discharged by air residual in expand tube from exhaust passage automatically, make by pressure uniform in expand tube, be conducive to the stability of ensuring the quality of products, and one denier air row finish, check valve can automatically be closed, without the need to arranging the open and close controlling mechanism of check valve; 2, the utility model hydraulic tube expander is utilized, indeformable by the mouth of pipe of expand tube, be conducive to follow-up assembling.
Accompanying drawing explanation
Fig. 1 is the structural representation of the exhaust apparatus of the utility model tube expander.
Fig. 2 is another embodiment schematic diagram of the utility model one-way valve structures.
Description of symbols in figure: A holder, A' feed liquor portion, 1, barrel-type casing, 2, actuating rod, 3, end shield, 4, conical chuck, 5, check valve, 6, annular cuff, 7, screw, 9, back-moving spring, 10,13, inner seal ring, 14, handle, 15, helical spring, 16, back-up ring, 17, by swollen metal tube, 18, fin, 19, interval, 21, flange, 22, exhaust passage, 22', feed pathway, 51, cylindrical slider, 52, rubber alms bowl body.
Detailed description of the invention '
Below in conjunction with accompanying drawing, the utility model will be further described:
For clearly demonstrating, first do following restriction to the locality of relevant elements: take Fig. 1 as reference, pointing to center position is " interior ", and pointing to left and right direction of both ends is " outward "; Pointing to axis direction is " interior ", and pointing to above-below direction is " outward ".
The exhaust apparatus of a kind of tube expander described in the utility model, be made up of feed liquor portion A' and holder A, both have identical clamping device respectively: barrel-type casing 1 the inner is built with conical chuck 4, the concave cone face corresponding to conical chuck is made in the inner of barrel-type casing, make both be slidably matched by the conical surface, when conical chuck indentation, its clamping bore increases, conical chuck stretches out, and its clamping bore reduces.Described feed liquor portion and holder have cylindrical actuating rod respectively, are shaped with shaft orientation liquid feeding passage 22' in the actuating rod outside left in feed liquor portion, be shaped with axial exhaust ducts 22 and communicate with the external world in actuating rod 2 outside left of holder; End shield 3 is set with outside above-mentioned actuating rod; Described end shield is tubular, and barrel-type casing is placed on outside end shield, and end shield outer end and barrel-type casing outer end threaded engagement are fixed, and end shield inwall and actuating rod are slidably matched; The inner of above-mentioned actuating rod is shaped with flange 21, between this flange and described end shield the inner, back-moving spring 9' is housed, and back-up ring 16 links respectively with the tail end of conical chuck 4.Under the elastic force effect of described back-moving spring, the flange of actuating rod is contacted mutually by back-up ring and conical chuck tail end and is ejected conical chuck the inner to barrel-type casing; At the outside left fixed sleeves of described actuating rod, annular cuff 6 is housed, this annular cuff has screw 7, corresponds to this screwhole position and has the blind hole entered for screw, annular cuff is fixedly connected with actuating rod at the outside left of actuating rod.The handle 14 that can drive both relative motions is movably installed with between annular cuff and end shield, this handle is by depression bar and packing ring is soldered forms, when pressing down-pressed pole, by leverage, the elastic force that annular cuff overcomes back-moving spring together with actuating rod outwards moves relative to the periphery of depression bar far-end by packing ring, the flange of actuating rod is separated with back-up ring 16 tail end, and conical chuck loses the power of extruding, and can make to be stretched into conical chuck by the two ends of swollen metal tube or exit conical chuck.
The inside line of the actuating rod 2 of described holder is made can the hollow shape of accommodating one-way valve structures and the cavity formed, and is communicated with described exhaust passage 22 by check valve 5.One-way valve structures is the sealing surface that the interface of exhaust passage and spool forms check valve, and the rear end of spool is contacted by helical spring 15 and cylindrical slider 51.Have small gap between the cylinder side face of described cylindrical slider and the hollow cavity inwall of holder actuating rod 2, this gap is by less to air resistance and have the requirement of larger resistance to set to liquid.As another embodiment shown in Fig. 2, at the inner face of cylindrical slider 51, be connected in series an alms bowl body be made up of elastomeric material by screw, inwardly, cylindrical slider 51 is identical with rubber alms bowl body 52 external diameter for alms bowl mouth.When being in exhaust process, air passes through from above-mentioned gap, and after the complete highly pressurised liquid of exhaust enters alms bowl body, the bead of alms bowl body turns up and expands and fit with chamber wall, by above-mentioned clearance seal, thus highly pressurised liquid is made to promote cylindrical slider by helical spring 15 by closed check valve.
At the inwall of end shield 3 and back-up ring 16, inner seal ring 13 and 10 is housed respectively, with respectively and actuating rod 2 and being sealed by between the termination of swollen metal tube.
The course of work: first feed liquor portion A' is connected high-voltage power supply, by the depression bar of lower handle, under the effect of lever force, the distal periphery of the packing ring of handle by annular cuff together with actuating rod outwards movement, at this moment back-moving spring compresses by the flange of actuating rod, make between the flange of actuating rod and back-up ring, to produce interval 19, the power that extrudes of conical chuck is disappeared, at this moment conical chuck can be stretched into by by the end of swollen metal tube, should be noted, must be extend into by the end of swollen metal tube and exceed back-up ring inner seal ring 10, directly decompression in chamber is made from being leaked by the end of swollen metal tube to prevent high pressure liquid.Then release handle, conical chuck squeezes top forward under the elastic force effect of back-moving spring, and the inner and the conical chuck conical surface of barrel-type casing are slidably matched, by by the end auto lock of swollen metal tube.Repeat above-mentioned action, by holder A be sealedly and fixedly connected by the other end of swollen metal tube.Owing to not being in free state by External Force Acting, between spool and valve seat (i.e. exhaust passage inner port), there is gap in the cylindrical slider 51 at this moment in actuating rod 2 cavity.Then high-voltage power supply switch is opened, high pressure liquid enters in the cavity by swollen metal tube and actuating rod 2, utilize the feature that surface tension of liquid is larger, gap between the cylinder side face of cylindrical slider and the hollow wall of holder actuating rod is set enough little, and the molecular volume of gas is much smaller than the molecular volume of liquid, therefore first outwardly discharged from above-mentioned gap and exhaust passage by the trapped air in swollen metal tube.When air release is complete, above-mentioned gap produces larger resistance to highly pressurised liquid, helical spring 15 compresses by the high pressure that the inner face of cylindrical slider or rubber alms bowl body directly bear, promote spool to move to exhaust passage, check valve is closed automatically, and then realize quick expand tube, fin 18 fixedly secured by swollen metal tube (heat pipe) 17 by interference fit.
Claims (6)
1. the exhaust apparatus of a tube expander, comprise the holder with clamping device and barrel-type casing, when expand tube, holder is by clamping device and be sealedly and fixedly connected by one end of swollen metal tube, it is characterized in that described holder includes cylindrical actuating rod, be shaped with axial exhaust ducts in this actuating rod outside left and communicate with the external world; Be set with end shield outside described actuating rod, both are slidably matched; Described barrel-type casing is placed on outside end shield, this end shield outer end and described barrel-type casing outer end threaded engagement; The inside line of described actuating rod make can accommodating one-way valve structures cavity and communicated with described exhaust passage by check valve.
2. the exhaust apparatus of tube expander according to claim 1, it is characterized in that described one-way valve structures is the sealing surface that the interface of exhaust passage and spool forms check valve, the rear end of spool is contacted by helical spring and cylindrical slider.
3. the exhaust apparatus of tube expander according to claim 1 and 2, it is characterized in that having gap between the face of cylinder of described cylindrical slider and the hollow wall of holder actuating rod, this gap is by less to air resistance and have the requirement of larger resistance to set to liquid.
4. the exhaust apparatus of tube expander according to claim 1 and 2, it is characterized in that, between the face of cylinder of described cylindrical slider and the hollow wall of holder actuating rod, there is gap, an alms bowl body be made up of elastomeric material is connected at the inner face of cylindrical slider, inwardly, cylindrical slider is identical with alms bowl body diameter for alms bowl mouth.
5. the exhaust apparatus of tube expander according to claim 1, it is characterized in that the inner of actuating rod is shaped with flange, this flange is contacted mutually by back-up ring and conical chuck tail end, and back-up ring and conical chuck tail end link.
6. the exhaust apparatus of tube expander according to claim 5, is characterized in that respectively inner seal ring being housed at the inwall of end shield and back-up ring, with respectively and actuating rod and being sealed by between the termination of swollen metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543037.4U CN204093981U (en) | 2014-09-19 | 2014-09-19 | The exhaust apparatus of tube expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543037.4U CN204093981U (en) | 2014-09-19 | 2014-09-19 | The exhaust apparatus of tube expander |
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| Publication Number | Publication Date |
|---|---|
| CN204093981U true CN204093981U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420543037.4U Active CN204093981U (en) | 2014-09-19 | 2014-09-19 | The exhaust apparatus of tube expander |
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| CN (1) | CN204093981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250587A (en) * | 2020-03-27 | 2020-06-09 | 安徽富光生活科技有限公司 | Water rises forming die |
-
2014
- 2014-09-19 CN CN201420543037.4U patent/CN204093981U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250587A (en) * | 2020-03-27 | 2020-06-09 | 安徽富光生活科技有限公司 | Water rises forming die |
| CN111250587B (en) * | 2020-03-27 | 2024-05-07 | 安徽富光销售有限公司 | Water expansion forming die |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |