CN210586445U - High-efficient type heat exchange tube apparatus for producing and heat exchange tube - Google Patents
High-efficient type heat exchange tube apparatus for producing and heat exchange tube Download PDFInfo
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- CN210586445U CN210586445U CN201921390453.4U CN201921390453U CN210586445U CN 210586445 U CN210586445 U CN 210586445U CN 201921390453 U CN201921390453 U CN 201921390453U CN 210586445 U CN210586445 U CN 210586445U
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Abstract
The utility model relates to a high-efficient type heat exchange tube apparatus for producing and heat exchange tube, this apparatus for producing includes that tubular product pulls subassembly and tubular product extrusion subassembly, tubular product pulls the subassembly and includes the support, remove the seat, driving motor, drive mechanism and tubular product tip clamping piece, remove seat and support sliding fit, tubular product tip clamping piece sets up on removing the seat, tubular product extrusion subassembly includes the base, the mould frame, mould and mould ejector retainer piece, mould ejector retainer piece is cylinder or pneumatic cylinder, the fixed top that sets up at the base of mould frame, the middle part of mould frame is equipped with the shaft hole, be equipped with three at least group's moulds on the mould frame, the mould includes the pinch roller, the pinch roller axle, pinch roller seat and bearing, be equipped with the arc recess on the outer peripheral face of pinch roller, the radian of this arc recess suits with the radian of tubular product, it has. The utility model discloses a production device can realize the automated production of plum blossom shape heat exchange tube, promotes production efficiency and machining precision, promotes the heat exchange efficiency of heat exchange tube by a wide margin.
Description
Technical Field
The utility model relates to a heat exchange pipe fitting and production facility field especially relate to a high-efficient type heat exchange tube apparatus for producing and heat exchange tube.
Background
In order to increase the heat exchange area, the heat exchange pipe fittings of a plurality of heat exchange devices all adopt heat exchange pipes with plum blossom-shaped sections, the heat exchange pipes increase the surface area to a certain extent and are beneficial to improving the heat exchange efficiency, however, because of the production equipment and the forming process, the occupied proportion of the concave area and the convex area of the manufactured plum blossom-shaped pipes is almost the same, as is well known, the external heat radiation of the heat exchange pipes mainly depends on heat radiation to radiate, the convex area becomes the main part of outward radiation diffusion of heat, the heat exchange efficiency is not maximized due to the structure of the existing plum blossom-shaped pipes, and a large promotion space still exists. Moreover, the existing plum blossom pipe production equipment is complex in structure, such as a plum blossom pipe forming device with the publication number of CN203711558U, 8 groups of screw rod mechanisms are arranged, if the 8 groups of screw rod mechanisms are all controlled by a motor, the cost is high, the requirement on the load of the motor is high, in the process of screw rod transmission, a roller can compress a pipe, so that the pipe deforms, required force is provided by the motor, the service life of the motor is short, if manual operation is not used, the precision is difficult to control, the shape of the plum blossom pipe is easy to deform, waste products are generated, and plum blossom pipes produced in different batches have obvious errors, so that the structures of the existing plum blossom pipe production equipment and the plum blossom pipe need to be improved, so that the production precision of the plum blossom pipe is improved, and the heat exchange efficiency is improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a first purpose is: aiming at the problems of complex structure and difficult control of processing precision of heat exchange tube production equipment in the prior art, a high-efficiency heat exchange tube production device is provided.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a high-efficient type heat exchange tube apparatus for producing, its structural feature is: the pipe extrusion assembly comprises a base, a die frame, a die and a die jacking piece, wherein the die jacking piece is an air cylinder or a hydraulic cylinder, the die frame is fixedly arranged at the top of the base, the middle part of the die frame is provided with an axle hole, at least three groups of dies are arranged on the die frame, the die comprises a pinch roller, a pinch roller axle, a pinch roller seat and a bearing, the pinch roller axle is arranged at the central axis of two ends of the pinch roller, the bearing is arranged on the pinch roller seat, the pinch roller shaft is matched with the bearing in a rotating way, the peripheral surface of the pinch roller is provided with an arc groove, the radian of the arc groove is matched with the radian of a pipe, a plurality of press teeth are distributed in the arc groove, the axial direction of the pinch roller is perpendicular to the direction of the shaft hole of the die frame, through holes with the same number as that of dies are distributed on the die frame at equal intervals, the shapes of the through holes are corresponding to the size of the pinch roller seat, the number of the die jacking pieces is the same as that of the dies, the die jacking pieces are fixedly arranged outside the die frame and are positioned at the through holes, ejector rods of the die jacking pieces penetrate through the through holes to be fixedly connected with the pinch roller seat, when the ejector rods of the die jacking pieces are elongated, the pinch roller seat moves towards the inner side of the shaft hole of the die frame, the ejector rods of each die jacking piece are elongated synchronously to extrude the pipe and extrude the pipe, the shaft, when the clamping piece at the end part of the pipe drags the pipe to move horizontally, the pipe horizontally passes through the shaft hole of the die frame, and the pressing wheel uniformly acts on the outer wall of the pipe.
The further scheme is as follows: the transmission mechanism is a screw rod mechanism or a gear rack mechanism, if the transmission mechanism is the screw rod mechanism, the driving motor is fixedly arranged on the bracket, the screw rod frame is arranged on the bracket, the screw rod is in rotating fit with the screw rod frame, an output shaft of the driving motor is fixedly connected with the screw rod, a nut seat matched with the screw rod is fixedly arranged on the movable seat, and the movable seat is driven to horizontally move relative to the bracket through the rotation of the screw rod; if the transmission mechanism is a gear and rack mechanism, a rack is fixedly arranged at the top of the support, the driving motor is fixedly arranged on the movable base, an output shaft of the driving motor is fixedly connected with a gear shaft, a gear is meshed with the rack, the driving motor drives the gear to rotate, and the horizontal movement of the movable base is realized through the transmission of the gear and the rack.
The further scheme is as follows: the pipe end clamping piece is a hydraulic chuck.
The further scheme is as follows: the pipe end clamping piece comprises a fixed seat, pipe sleeves and pipe sleeve jacking pieces, the pipe sleeve jacking pieces are fixedly connected with the movable seat, the pipe sleeve jacking pieces are air cylinders or hydraulic cylinders, at least two groups of pipe sleeve jacking pieces are arranged, the pipe sleeve jacking pieces are fixedly connected with the fixed seat, the pipe sleeves are split-type pipe sleeves, the radian of the inner walls of the pipe sleeves corresponds to the shape radian of the pipes, the number of the split parts of the pipe sleeves is the same as the number of the pipe sleeve jacking pieces, and push rods of the pipe sleeve jacking pieces are fixedly connected with the corresponding pipe sleeves.
The further scheme is as follows: a sliding sleeve for supporting the pipe is arranged on one side, far away from the pipe end clamping piece, of the shaft hole of the die frame, and the diameter of an inner hole of the sliding sleeve is slightly larger than that of the pipe.
The further scheme is as follows: the pipe traction assembly comprises a cylinder support, a cylinder and a triangular push plate, wherein the cylinder body of the cylinder is fixed on the cylinder support, a push rod of the cylinder is fixedly connected with the triangular push plate, the cylinder support is fixed on the support of the pipe traction assembly, and the triangular push plate is arranged towards the support of the pipe traction assembly.
Another object of the utility model is to provide a heat exchange tube of utilizing foretell heat exchange tube production facility to produce.
The heat exchange tube produced by the high-efficiency heat exchange tube production device comprises a tube body, cylindrical straight tube areas are arranged at two end parts of the tube body, a plurality of grooves are uniformly distributed on the wall surface of the middle part of the tube body, the depth of each groove is 0.3-1.0 mm, arc-shaped bulges are arranged at two sides of each groove, the grooves and the arc-shaped bulges are alternately distributed on the wall surface of the middle part of the tube body, the curvature radius of the bottom of each groove is far smaller than that of the arc-shaped bulges, the circumferential angle degree of each groove is 2-5 degrees, and the circumferential angle degree of each arc-shaped bulge is 35-38 degrees.
The further scheme is as follows: the whole surface of the pipe body is subjected to rough process treatment, so that a rough structure is formed on the outer surface of the pipe body.
The utility model discloses has positive effect: the utility model discloses a high-efficient type heat exchange tube apparatus for producing can realize the automated production of plum blossom shape heat exchange tube, can show the production efficiency who promotes the plum blossom shape cooling tube, adopts the extrusion degree of depth of cylinder or pneumatic cylinder control mould moreover, can promote the machining precision of plum blossom pipe, avoids the production of wastrel, simultaneously, adopts the utility model discloses a plum blossom pipe of apparatus for producing production, the proportion of recess position is far less than the protruding position of arc, mainly carries out heat radiation through the protruding position of arc during the heat dissipation, so through this kind of design, can promote the heat exchange efficiency of heat exchange tube by a wide margin.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a tube extrusion assembly;
FIG. 3 is an enlarged partial view of portion A of FIG. 2;
FIG. 4 is a side view of the pipe pulling assembly;
FIG. 5 is a schematic view of the mechanism of the heat exchange tube;
FIG. 6 is a schematic cross-sectional view of a heat exchange tube;
the pipe drawing assembly 1, the support 11, the moving seat 12, the driving motor 13, the transmission mechanism 14, the rack 141, the gear 142, the pipe end clamping element 15, the pipe sleeve 151, the pipe sleeve jacking element 152, the discharging assembly 16, the cylinder support 161, the cylinder 162, the triangular push plate 163, the pipe extruding assembly 2, the base 21, the die frame 22, the die 23, the pressing wheel 231, the pressing wheel shaft 232, the pressing wheel seat 233, the bearing 234, the pressing teeth 235, the die jacking element 24, the sliding sleeve 25, the pipe body 3, the cylindrical straight pipe area 31, the groove 32 and the arc-shaped protrusion 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
The embodiment of the utility model provides a high-efficient type heat exchange tube apparatus for producing, as shown in fig. 1-6, it includes that tubular product pulls subassembly 1 and tubular product extrusion subassembly 2.
The pipe traction assembly 1 is used for traction the end part of the pipe, so that the pipe passes through the pipe extrusion assembly 2 at a certain speed, extrusion forming of the pipe is completed, and the required quincunx heat exchange pipe is manufactured. The pipe traction assembly 1 comprises a bracket 11, a movable seat 12, a driving motor 13, a transmission mechanism 14 and a pipe end clamping piece 15.
Because tubular product has certain length, so, in order to make the position of treating of tubular product can both pass through tubular product extrusion subassembly 2, support 11 must have certain length, therefore, this support 11 includes many stands, sets up a plurality of longitudinal bars between the stand and sets up the crossbeam at the stand top, for the convenience of moving the slip of seat, is equipped with the guide rail on the crossbeam, moves seat and guide rail sliding fit.
The driving motor 13 is a stepping motor or a servo motor or other motors. The output shaft of the driving motor 13 drives the transmission mechanism 14 to move, and then drives the moving seat 12 to horizontally displace along the support 11, so that the pipe passes through the extrusion die of the pipe extrusion assembly 2 at a constant speed, and the pipe is extruded and formed.
The transmission mechanism 14 is a screw rod mechanism or a gear rack mechanism, if the transmission mechanism is the screw rod mechanism, the driving motor 13 is fixedly arranged on the support 11, a screw rod frame is arranged on the support 11, the screw rod is in rotating fit with the screw rod frame, an output shaft of the driving motor 13 is fixedly connected with the screw rod, a nut seat matched with the screw rod is fixedly arranged on the moving seat, and the moving seat is driven to horizontally move relative to the support through the rotation of the screw rod; if the transmission mechanism is a gear-rack mechanism, the rack 141 is fixedly arranged at the top of the bracket 11, the driving motor 13 is fixedly arranged on the movable base 12, an output shaft of the driving motor 13 is fixedly connected with a gear shaft, the gear 142 is meshed with the rack 141, the driving motor 13 drives the gear 142 to rotate, and the horizontal movement of the movable base 12 is realized through the transmission of the gear 142 and the rack 141.
The tube end clamp 15 is a pneumatic or hydraulic chuck or a pneumatic or hydraulic tube sleeve. The pneumatic chuck or the hydraulic chuck can be a two-jaw chuck or a three-jaw chuck. If the pipe end clamping member 15 is a pneumatic or hydraulic pipe sleeve, the structure of the pipe end clamping member comprises a pipe sleeve 151 and pipe sleeve top clamping members 152, the pipe sleeve top clamping members 152 are fixedly connected with the movable base 12, the pipe sleeve top clamping members 152 are air cylinders or hydraulic cylinders, at least two groups of pipe sleeve top clamping members 152 are provided, in the attached drawing 2, two groups of pipe sleeve top clamping members 152 are selected, the corresponding pipe sleeve 151 is a two-petal pipe sleeve, the radian of the inner wall of the pipe sleeve 151 corresponds to the shape radian of the pipe, and a push rod of the pipe sleeve top clamping member 152 is fixedly connected with the corresponding pipe sleeve 151.
The tube extrusion assembly 2 includes a base 21, a die holder 22, a die 23, and a die top member 24.
The base 21 is used for enabling the height of a die 23 of the pipe extrusion assembly to be consistent with that of the pipe end clamping piece 15, so that the pipe can horizontally move under the action of the pipe traction assembly 1, and the extrusion forming precision of the pipe extrusion assembly 2 to the pipe is guaranteed.
The die holder 22 is used for fixing the die 23 and the die top member 24. In fig. 1, the mold frame 22 is hexagonal, but in practical applications, a circular or other mold frame may be used. The mold frame 22 is fixedly disposed on top of the base 21. The middle part of mould frame 22 is equipped with the shaft hole, and the shaft hole of mould frame 22 and the height of the tubular product tip clamping piece 15 of tubular product traction assembly 1 are corresponding, and when making tubular product tip clamping piece 1 drag tubular product horizontal migration, the tubular product level passes through the shaft hole of mould frame, makes the pinch roller evenly act on the tubular product outer wall.
At least three groups of moulds are arranged on the mould frame 22, the three groups of moulds are arranged in figure 1, the number of the moulds 23 is arranged according to the shape design requirement of a radiating pipe, each mould 23 comprises a press wheel 231, a press wheel shaft 232, a press wheel seat 233 and a bearing 234, the press wheel shaft 232 is arranged at the central axis of the two ends of the press wheel 231, the bearing 234 is arranged on the press wheel seat 233, the press wheel shaft 232 is in running fit with the bearing 234, an arc-shaped groove is arranged on the peripheral surface of the press wheel 231, the radian of the arc-shaped groove is adapted to the radian of a pipe, a plurality of press teeth 235 are distributed in the arc-shaped groove, the axial direction of the press wheel 231 is vertical to the direction of the shaft hole of the mould frame 22, through holes with the same number as the number of the moulds 23 are distributed on the mould frame 22 at equal intervals, the shapes of the through holes correspond to the sizes of the press wheel seats 233, and is located the through-hole, and the ejector pin of mould top tight piece 24 passes this through-hole and pinch roller seat 233 fixed connection, and when the ejector pin of mould top tight piece 24 extended, pinch roller seat 233 moved towards the shaft hole inboard of mould frame 22, extrudeed the tubular product, and the ejector pin of each mould top tight piece 24 extended in step, extruded the tubular product.
In the above embodiment: a sliding sleeve 25 for supporting the pipe is arranged on one side of the shaft hole of the die frame 22, which is far away from the pipe end clamping piece 15, and the diameter of an inner hole of the sliding sleeve 25 is slightly larger than that of the pipe.
In the above embodiment: the other subassembly 16 of unloading that is equipped with of support of tubular product traction assembly 1, tubular product accomplish extrusion forming processing back, through unloading subassembly 16 with tubular product propelling movement to the finished product work or material rest of support 11 on the support 11, unloading subassembly 16 include cylinder support 161, cylinder 162 and triangle push pedal 163, the cylinder body of cylinder 162 is fixed on cylinder support 161, the push rod and the triangle push pedal 163 fixed connection of cylinder 162, cylinder support 161 is fixed on the support 11 of tubular product traction assembly 1, triangle push pedal 163 sets up towards the support 11 of tubular product traction assembly 1.
A heat exchange tube produced by the heat exchange tube production equipment comprises a tube body 3, cylindrical straight tube areas 31 are arranged at two end parts of the tube body 3, a plurality of grooves 32 are uniformly distributed on the wall surface of the middle part of the tube body 3, the depth of each groove 32 is 0.3-1.0 mm, arc-shaped bulges 33 are arranged at two sides of each groove 32, the grooves 32 and the arc-shaped bulges 33 are alternately distributed on the wall surface of the middle part of the tube body 3, the curvature radius of the bottom of each groove 32 is far smaller than that of the corresponding arc-shaped bulge 33, the circumferential angle degree of each groove 32 is 2-5 degrees, and the circumferential angle degree of each arc-shaped bulge 33 is 35-38 degrees.
In this embodiment: the whole surface of the pipe body 3 is subjected to rough process treatment, so that a rough structure is formed on the outer surface of the pipe body 3, and heat-conducting liquid can pass through the rough structure more conveniently. The rough treatment process is a passivation process, a sand blasting process or an acid washing process.
In this embodiment: the pipe body 3 is made of a metal material or an alloy material.
The utility model discloses a high-efficient type heat exchange tube apparatus for producing when producing, the ejector pin of mould top piece 24 of tubular product extrusion subassembly 2 contracts earlier, make mould 23 contract from the shaft hole, then pass the shaft hole of the mould frame 22 of tubular product extrusion subassembly 2 with one end of tubular product, with tubular product tip clamping piece 15 fixed connection of tubular product traction assembly 1, then make the ejector pin of mould top piece 25 of tubular product extrusion subassembly 2 push out, make mould 23 compress tightly tubular product, and exert certain pressure to tubular product, make tubular product pressed the position deformation, form required petal shape, then the motor of tubular product traction assembly 1 starts, drive and move seat 12 along support 11 and move, draw at the uniform velocity tubular product and pass through mould 23, when tubular product passes through mould 23, pinch roller 231 of mould 23 rotates, the pressure tooth 235 of pinch roller 231 periphery acts on the tubular product surface, make tubular product deform, the position that pressure tooth 235 acts on forms recess 32, and the portions between the teeth 235 form the arcuate projections 33, because the three dies are circumferentially evenly distributed, with this arrangement, equally spaced recesses 32 and arcuate projections 33 can be machined on the surface of the pipe. Because the utility model discloses a press the tooth to process the pipe fitting, so, the curvature radius of recess 32 is far less than the curvature radius of the protruding 33 department of arc, and the central angle number of degrees at recess 32 position is far less than the central angle number of degrees of arc protruding 33, and the surface area of the protruding 33 part of arc is far greater than the surface area of recess 32 part promptly, and the heat exchange efficiency of heat exchange tube obtains obvious promotion. The utility model discloses a high-efficient type heat exchange tube apparatus for producing can realize the automated production of plum blossom shape heat exchange tube, can show the production efficiency who promotes the plum blossom shape cooling tube, adopts the extrusion degree of depth of cylinder or pneumatic cylinder control mould moreover, can promote the machining precision of plum blossom pipe, avoids the production of wastrel.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a high-efficient type heat exchange tube apparatus for producing which characterized in that: the pipe extrusion assembly comprises a base, a die frame, a die and a die jacking piece, wherein the die jacking piece is an air cylinder or a hydraulic cylinder, the die frame is fixedly arranged at the top of the base, the middle part of the die frame is provided with an axle hole, at least three groups of dies are arranged on the die frame, the die comprises a pinch roller, a pinch roller axle, a pinch roller seat and a bearing, the pinch roller axle is arranged at the central axis of two ends of the pinch roller, the bearing is arranged on the pinch roller seat, the pinch roller shaft is matched with the bearing in a rotating way, the peripheral surface of the pinch roller is provided with an arc groove, the radian of the arc groove is matched with the radian of a pipe, a plurality of press teeth are distributed in the arc groove, the axial direction of the pinch roller is perpendicular to the direction of the shaft hole of the die frame, through holes with the same number as that of dies are distributed on the die frame at equal intervals, the shapes of the through holes are corresponding to the size of the pinch roller seat, the number of the die jacking pieces is the same as that of the dies, the die jacking pieces are fixedly arranged outside the die frame and are positioned at the through holes, ejector rods of the die jacking pieces penetrate through the through holes to be fixedly connected with the pinch roller seat, when the ejector rods of the die jacking pieces are elongated, the pinch roller seat moves towards the inner side of the shaft hole of the die frame, the ejector rods of each die jacking piece are elongated synchronously to extrude the pipe and extrude the pipe, the shaft, when the clamping piece at the end part of the pipe drags the pipe to move horizontally, the pipe horizontally passes through the shaft hole of the die frame, and the pressing wheel uniformly acts on the outer wall of the pipe.
2. The high-efficiency heat exchange tube production device as recited in claim 1, wherein: the transmission mechanism is a screw rod mechanism or a gear rack mechanism, if the transmission mechanism is the screw rod mechanism, the driving motor is fixedly arranged on the bracket, the screw rod frame is arranged on the bracket, the screw rod is in rotating fit with the screw rod frame, an output shaft of the driving motor is fixedly connected with the screw rod, a nut seat matched with the screw rod is fixedly arranged on the movable seat, and the movable seat is driven to horizontally move relative to the bracket through the rotation of the screw rod; if the transmission mechanism is a gear and rack mechanism, a rack is fixedly arranged at the top of the support, the driving motor is fixedly arranged on the movable base, an output shaft of the driving motor is fixedly connected with a gear shaft, a gear is meshed with the rack, the driving motor drives the gear to rotate, and the horizontal movement of the movable base is realized through the transmission of the gear and the rack.
3. The high-efficiency heat exchange tube production device as recited in claim 1, wherein: the pipe end clamping piece is a pneumatic chuck or a hydraulic chuck.
4. The high-efficiency heat exchange tube production device as recited in claim 1, wherein: the pipe end clamping piece comprises a fixed seat, pipe sleeves and pipe sleeve jacking pieces, the pipe sleeve jacking pieces are fixedly connected with the movable seat, the pipe sleeve jacking pieces are air cylinders or hydraulic cylinders, at least two groups of pipe sleeve jacking pieces are arranged, the pipe sleeve jacking pieces are fixedly connected with the fixed seat, the pipe sleeves are split-type pipe sleeves, the radian of the inner walls of the pipe sleeves corresponds to the shape radian of the pipes, the number of the split parts of the pipe sleeves is the same as the number of the pipe sleeve jacking pieces, and push rods of the pipe sleeve jacking pieces are fixedly connected with the corresponding pipe sleeves.
5. The high-efficiency heat exchange tube production device as recited in claim 1, wherein: a sliding sleeve for supporting the pipe is arranged on one side, far away from the pipe end clamping piece, of the shaft hole of the die frame, and the diameter of an inner hole of the sliding sleeve is slightly larger than that of the pipe.
6. The high-efficiency heat exchange tube production device as recited in claim 1, wherein: the pipe traction assembly comprises a cylinder support, a cylinder and a triangular push plate, wherein the cylinder body of the cylinder is fixed on the cylinder support, a push rod of the cylinder is fixedly connected with the triangular push plate, the cylinder support is fixed on the support of the pipe traction assembly, and the triangular push plate is arranged towards the support of the pipe traction assembly.
7. A heat exchange tube produced by the high efficiency heat exchange tube producing apparatus as recited in any one of claims 1 to 6, characterized in that: the pipe comprises a pipe body, wherein cylindrical straight pipe areas are arranged at two end parts of the pipe body, a plurality of grooves are uniformly distributed on the wall surface of the middle part of the pipe body, the depth of each groove is 0.3-1.0 mm, arc-shaped bulges are arranged at two sides of each groove, the grooves and the arc-shaped bulges are alternately distributed on the wall surface of the middle part of the pipe body, the curvature radius of the bottom of each groove is far smaller than that of the arc-shaped bulges, the circumferential angle degree of each groove is 2-5 degrees, and the circumferential angle degree of each arc-shaped bulge is 35-38 degrees.
8. The heat exchange tube of claim 7, wherein: the whole surface of the pipe body is subjected to rough process treatment, so that a rough structure is formed on the outer surface of the pipe body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921390453.4U CN210586445U (en) | 2019-08-24 | 2019-08-24 | High-efficient type heat exchange tube apparatus for producing and heat exchange tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921390453.4U CN210586445U (en) | 2019-08-24 | 2019-08-24 | High-efficient type heat exchange tube apparatus for producing and heat exchange tube |
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| CN210586445U true CN210586445U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618417A (en) * | 2020-05-25 | 2020-09-04 | 浙江威泰汽配有限公司 | Port welding device of flexible piece |
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2019
- 2019-08-24 CN CN201921390453.4U patent/CN210586445U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618417A (en) * | 2020-05-25 | 2020-09-04 | 浙江威泰汽配有限公司 | Port welding device of flexible piece |
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