CN105698442A - Threaded pipe type absorber and manufacturing method and device thereof - Google Patents
Threaded pipe type absorber and manufacturing method and device thereof Download PDFInfo
- Publication number
- CN105698442A CN105698442A CN201610062176.9A CN201610062176A CN105698442A CN 105698442 A CN105698442 A CN 105698442A CN 201610062176 A CN201610062176 A CN 201610062176A CN 105698442 A CN105698442 A CN 105698442A
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- China
- Prior art keywords
- cotton gin
- winding
- cleaning
- cotton
- type absorber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B37/00—Absorbers; Adsorbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/04—Making by means of profiled-rolls or die rolls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning In General (AREA)
Abstract
The invention provides a threaded pipe type absorber and a manufacturing method and device thereof. A reaction cavity used for enabling a first solution fed from the upper portion and gas fed from the lower portion to react mutually is formed in a winding plate. At least two winding pipes are spirally wound around the outer wall of a core tube in a thread engagement mode. The manufacturing method of the threaded pipe type absorber comprises the steps of straightening of the winding pipes, detection of a thread rolling machine, thread rolling, cleaning and pipe collection. The threaded pipe type absorber is simple in structure; on the condition of not changing the size of the core tube, the winding pipes are wound around the periphery of the core tube; the area of the winding pipes with threads is increased by lots of times compared with that of unthreaded pipes, and the winding pipes are arranged in a threaded mode, so that the flow velocity of liquid ammonia is reduced, and the heat exchange area is increased. The absorber is applied to an absorption type air-conditioning unit, so that the heating time of refrigerating fluid is shortened, and the unit stability and the unit efficiency are improved.
Description
Technical field
The invention belongs to air-conditioning technical field, particularly relate to a kind of screw tube type absorber。
Background technology
Absorber is parts maximum in absorption system, and heat exchange area accounts for about the 40% of the total heat exchange area of unit, and its performance directly restricts overall structure and the performance of refrigeration unit, is one of most important parts in absorption system。
The common falling-film absorber in market is mainly shell and tube, is largely used to connection multiple fields such as alkali liquor heat exchanger and water cooler, mother solution heater, Outer Cooler, furnace gas cooling tower, semiwater gas cooling tower。
But the size of the core pipe of shell and tube absorber is limited, it is difficult to increase heat exchange area；Owing to belonging to shell and tube, straight up and down, flow velocity is very fast, causes that heat exchange area is not enough。
Decorative pattern is not had, it does not have corresponding cotton ginning technique at the tubulation within regular absorbent device。
Critical piece at corrugated tubing absorber is corrugated tubing, and the manufacture equipment of corrugated tubing generally adopts, cotton gin, cotton gin is also referred to as rolling rib machine, including body, motor and screw tool, during operation, screw tool is near workpiece, obtains having threaded workpiece after carrying out roll-in。Above-mentioned rib machine pressure when roll-in is relatively big, is mainly used in solid workpiece, it is impossible to complete processing hollow workpiece, additionally there is no the cleaning parts of workpiece during work pieces process and after processing, easily cause tool damage and the inconsistent situation of screw thread, shorten cutting-tool's used life, add processing cost。
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of screw tube type absorber and corrugated tubing cotton ginning, and the size of the core pipe for solving absorber in prior art is limited, it is difficult to increase heat exchange area；Owing to belonging to shell and tube, straight up and down, flow velocity is very fast, causes the problem that heat exchange area is not enough。
For achieving the above object and other relevant purposes, the present invention provides a kind of screw tube type absorber, including:
Winding plate, is inside provided with the reaction chamber that the gas for the first solution sent into for top with bottom feeding reacts to each other；
Winding pipe, is connected with for absorbing described first solution and the second solution of the produced heat of gas reaction, and wherein, at least two described winding pipe pass through respective screw thread tabling spiral wrap at core tube wall。
Preferably, described two chimeric winding pipe surfaces are provided with winding plate。
Preferably, the arrangement of described winding plate is consistent with winding pipe。
Preferably, described winding plate is steel plate。
Preferably, the import of described winding pipe is used for connecting rectifier。
Preferably, described first solution and the second solution are ammonia, and the concentration of described second solution is higher than the first solution, and described gas is ammonia。
Preferably, the thickness of described winding plate is 0.2-0.4mm, and width is 75-85mm。
A kind of screw tube type absorber manufacture method, method includes:
First step S1: winding pipe alignment: winding pipe selects hollow pipe, and its diameter is 15.88 ± 0.2mm；Utilize straightener alignment,
The Aligning speed of its straightener is 4-7m/min；
Second step S2: detection cotton gin: before corrugated tubing enters cotton gin, first adjusts the cutter of cotton gin, adopts optical analyser to detect whether to meet regulation, and it adjusts parameter is tooth height 0.49-0.52mm, 30-33 tooth/in；
3rd step S3: cotton ginning: the corrugated tubing after straightener alignment enters and adjusts the cotton gin meeting regulation, is introduced into 250-300mm in the through hole in the gin blade of cotton gin, adopts whether optical analyser meets, tooth height 0.49-0.52mm, 30-33 tooth/in；Time cotton gin starts, lubricant ejecting gun sprays on the gin blade and corrugated tubing of cotton gin, plays the lubrication of cotton gin and rinses the effect of impurity；
4th step S4: clean: cotton ginning complete after corrugated tubing enter cleaning case be carried out, be provided with degreasing agent in cleaning case, during cleaning, by clean hairbrush be carried out, subsequently by remove hairbrush remove degreasing agent；
5th step S5: filing: the corrugated tubing after cleaning, collects to corrugated tubing Dai Cun district, in order to being installed on screw tube type absorber。
A kind of equipment manufacturing corrugated tubing, including: clamping part, roll-in portion and cleaning part, roll-in portion also includes casing, scroll chuck it is provided with in casing, the handle of a knife of gin blade in scroll chuck one end clamping casing, the output shaft of the reductor that scroll chuck other end connecting box is external, the belt pulley on the power shaft of reductor connects drive motor by transmission band。
Preferably, also including lubricant ejecting gun in described casing, the other end of lubricant ejecting gun is positioned at the lubricant tank outside casing, adopts circulating pump supply。
Preferably, also including the recovery holes of bottom in described casing, the recovery tube below recovery holes connects lubricant tank。
Described casing both sides are provided with clamping part, clamping part includes the bracing frame outside casing, bracing frame is arranged over supporting transverse slat, bracing frame and support transverse slat are with bolts, support transverse slat and be provided with the support column of vertical direction, the top of support column adopts bolt to fix upper and lower two clamping wheels, and work piece enters roll-in portion by clamping part。
Preferably, the rear end in described roll-in portion is provided with cleaning part。
Preferably, described cleaning part includes cleaning case, cleaning case is provided with some bearings near the one end in cotton ginning portion, brush roll it is provided with in bearing, brush roll in cleaning case is provided with hairbrush, brush roll outside cleaning case connects speed reducer output shaft, and the belt pulley on the power shaft of reductor connects drive motor by transmission band。
Preferably, described hairbrush is divided into cleaning hairbrush and removes hairbrush, cleans hairbrush and is positioned at position on the lower side, workpiece both sides, removes hairbrush and is positioned at above workpiece, and away from roll-in portion。
Preferably, being provided with degreasing agent in described cleaning case, liquid level is positioned at below workpiece。
As it has been described above, the screw tube type absorber of the present invention, have the advantages that
Present configuration is simple, when not changing the size of core pipe, arranges winding pipe pipe in core pipe periphery, pipe area ratio light pipe because having threaded winding pipe increases several times, and spiral is arranged, and makes flows of liquid ammonia prompt drop low, reach the effect that heat exchange area increases。This absorber is applied in absorption type air-conditioner unit, reduces the cold-producing medium heated time, improves set steady and unit efficiency。Smooth corrugated tubing can be shut out screw thread by this technique after cotton gin cotton ginning, starts ejecting gun while cotton ginning, can prevent impurity from entering cutter, extend the service life of cotton gin。
This cotton gin can be rapidly completed the cotton ginning of hollow thread pipe, and will not deform；Ejecting gun can the impurity of one side washing processing part, on the one hand lubricate gin blade, extend service life；Hollow pipe after processing can be disposed lubricant after increasing cleaning part。
Accompanying drawing explanation
Fig. 1 is shown as the screw tube type absorber structure schematic diagram of the present invention。
Fig. 2 is shown as the structural representation of the winding pipe of the present invention。
Fig. 3 is shown as the flow process chart of corrugated tubing of the present invention。
Fig. 4 is shown as the press device of corrugated tubing of the present invention。
Label declaration
I is winding plate
II is winding pipe
III is core pipe
IV is screw thread。
1 be lubricant tank, 2 be casing, 3 be drive motor, 4 be belt pulley, 5 be transmission band, 6 be cleaning case, 7 for cleaning hairbrush, 8 for removing hairbrush, 9 be brush roll, 10 be output shaft, 11 be reductor, 12 be power shaft, 13 be scroll chuck, 14 be lubricant spray gun, 15 be support column, 16 be blade, 17 be knife rest, 18 be recovery tube, 19 be clamping wheel, 20 for supporting transverse slat, 21 be bracing frame, 22 be handle of a knife, 23 for block plate。
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art the content disclosed by this specification can understand other advantages and effect of the present invention easily。The present invention can also be carried out by additionally different detailed description of the invention or apply, and the every details in this specification based on different viewpoints and application, can also carry out various modification or change under the spirit without departing from the present invention。
Refer to Fig. 1,2,3,4。It should be noted that, the diagram provided in the present embodiment only illustrates the basic conception of the present invention in a schematic way, then assembly that in graphic, only display is relevant with the present invention but not component count when implementing according to reality, shape and size drafting, during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its assembly layout kenel is likely to increasingly complex。
The present invention provides a kind of screw tube type absorber, including winding plate I, is inside provided with the reaction chamber that the gas for the first solution sent into for top with bottom feeding reacts to each other；Winding pipe II, is connected with for absorbing described first solution and the second solution of the produced heat of gas reaction, and wherein, at least two described winding pipe II pass through respective screw thread IV tabling spiral wrap at core pipe III outer wall。
In one embodiment of the invention, described two chimeric winding pipe II surfaces are provided with winding plate I, and the arrangement of described winding plate I is consistent with winding pipe II。
In one embodiment of the invention, described winding plate I is steel plate。
In one embodiment of the invention, the import of described winding pipe II is used for connecting rectifier。
In one embodiment of the invention, described first solution and the second solution are ammonia, and the concentration of described second solution is higher than the first solution, and described gas is ammonia。
In one embodiment of the invention, the thickness of described winding plate I is 0.3mm, and width is 80mm。
A kind of screw tube type absorber manufacture method, method includes:
First step S1: winding pipe alignment: winding pipe selects hollow pipe, and its diameter is 15.88 ± 0.2mm；Utilize straightener alignment,
The Aligning speed of its straightener is 5.5m/min；
Second step S2: detection cotton gin: before corrugated tubing enters cotton gin, first adjusts the cutter of cotton gin, adopts optical analyser to detect whether to meet regulation, and it adjusts parameter is tooth height 0.5mm, 32 teeth/in；
3rd step S3: cotton ginning: the corrugated tubing after straightener alignment enters and adjusts the cotton gin meeting regulation, is introduced into 300mm in the through hole in the gin blade of cotton gin, adopts whether optical analyser meets, tooth height 0.5mm, 32 teeth/in；Time cotton gin starts, lubricant ejecting gun sprays on the gin blade and corrugated tubing of cotton gin, plays the lubrication of cotton gin and rinses the effect of impurity；
4th step S4: clean: cotton ginning complete after corrugated tubing enter cleaning case be carried out, be provided with degreasing agent in cleaning case, during cleaning, by clean hairbrush be carried out, subsequently by remove hairbrush remove degreasing agent；
5th step S5: filing: the corrugated tubing after cleaning, collects to corrugated tubing Dai Cun district, and follow-up corrugated tubing omits the operation of detection cotton gin。
The import of the winding pipe in absorber is connected with rectifier, absorber be arranged over isocon, be weak ammonia in isocon, weak ammonia is from winding body top down spray, and ammonia steam enters bottom winding body。The steam risen and lower descending liquid carry out adverse current and produce heat, pass to the concentrated solution in corrugated tubing pipe, have completed heat exchange。
The present invention provides a kind of hollow pipe cotton gin, including:
Clamping part, roll-in portion and cleaning part, roll-in portion also includes casing 2, scroll chuck 13 it is provided with in casing 2, the handle of a knife 22 of gin blade in scroll chuck 13 one end clamping casing 2, scroll chuck 13 other end connects the output shaft 10 of the reductor 11 outside casing 2, and the belt pulley on the power shaft 12 of reductor 11 connects drive motor 3 by transmission band。
Preferably, described gin blade, adopt namco board, model is a-23, and including handle of a knife 22, handle of a knife 22 one end embeds in scroll chuck 13, and handle of a knife 22 other end and knife rest 17 are structure as a whole, and be all provided with three blades 16, blade 16 has screw thread between knife rest 17 and block plate 23；The center of knife rest 17 is provided with through hole, passes for work piece。After blade enters through hole, language blade coincide, and scroll chuck drives gin blade to drive work piece to advance while rotating。
Preferably, also including lubricant ejecting gun 14 in described casing 2, the other end of lubricant ejecting gun 14 is positioned at the lubricant tank 1 outside casing, adopts circulating pump supply。
Preferably, also including the recovery holes of bottom in described casing 2, the recovery tube 18 below recovery holes connects lubricant tank。
Preferably, described casing 2 both sides are provided with clamping part, clamping part includes the bracing frame 21 outside casing, bracing frame 21 is arranged over supporting transverse slat 20, bracing frame 21 and support transverse slat 20 are with bolts, supporting transverse slat 20 and be provided with the support column 15 of vertical direction, the top of support column 15 adopts bolt to fix upper and lower two clamping wheels 19, and work piece enters roll-in portion by clamping part。
Preferably, the rear end in described roll-in portion is provided with cleaning part。
Preferably, described cleaning part includes cleaning case 6, cleaning case 6 is provided with three bearings near the one end in cotton ginning portion, brush roll 9 it is provided with in bearing, brush roll 9 in cleaning case is provided with hairbrush, brush roll 9 outside cleaning case 6 connects speed reducer output shaft 10, and the belt pulley on the power shaft 12 of reductor connects drive motor 3 by transmission band。
Preferably, described hairbrush is divided into cleaning hairbrush 7 and removes hairbrush 8, cleans hairbrush 7 and is positioned at position on the lower side, workpiece both sides, removes hairbrush 8 and is positioned at above workpiece, and away from roll-in portion。
Preferably, being provided with degreasing agent in described cleaning case, for removal of contamination and lubricant, liquid level is positioned at below workpiece。
In sum, the present invention includes: winding plate, is inside provided with the reaction chamber that the gas for the first solution sent into for top with bottom feeding reacts to each other；Winding pipe, is connected with for absorbing described first solution and the second solution of the produced heat of gas reaction, and wherein, at least two described winding pipe pass through respective screw thread tabling spiral wrap at core tube wall。
So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization, present configuration is simple, when not changing the size of core pipe, arranging winding pipe in core pipe periphery, the pipe area ratio light pipe because having threaded winding pipe increases several times, and spiral is arranged, make flows of liquid ammonia prompt drop low, reach the effect that heat exchange area increases。This absorber is applied in absorption type air-conditioner unit, reduces the cold-producing medium heated time, improves set steady and unit efficiency。。
Above-described embodiment is illustrative principles of the invention and effect thereof only, not for the restriction present invention。Above-described embodiment all under the spirit and category of the present invention, can be modified or change by any those skilled in the art。Therefore, art has usually intellectual such as modifying without departing from all equivalences completed under disclosed spirit and technological thought or change, must be contained by the claim of the present invention。
Claims (10)
1. a screw tube type absorber, it is characterised in that including:
Winding plate, is inside provided with the reaction chamber that the gas for the first solution sent into for top with bottom feeding reacts to each other；
Winding pipe, is connected with for absorbing described first solution and the second solution of the produced heat of gas reaction, and wherein, at least two described winding pipe pass through respective screw thread tabling spiral wrap at core tube wall。
2. screw tube type absorber according to claim 1, it is characterised in that described two chimeric winding pipe surfaces are provided with winding plate, and the arrangement of winding plate is consistent with winding pipe。
3. a screw tube type absorber manufacture method, it is characterised in that for manufacturing the screw tube type absorber as according to any one of claim 1 to 2；Described method includes:
First step S1: winding pipe alignment: winding pipe selects hollow pipe；Utilize straightener alignment；
Second step S2: detection cotton gin: before corrugated tubing enters cotton gin, first adjusts the cutter of cotton gin, adopts optical analyser to detect whether to meet regulation；
3rd step S3: cotton ginning: the corrugated tubing after straightener alignment enters and adjusts the cotton gin meeting regulation, adopts whether optical analyser meets；Time cotton gin starts, lubricant ejecting gun sprays on the cutter and corrugated tubing of cotton gin, plays the lubrication of cotton gin and rinses the effect of impurity；
4th step S4: clean: cotton ginning complete after corrugated tubing enter cleaning case be carried out, during cleaning, have ejecting gun to spray degreasing agent to corrugated tubing；
5th step S5: filing: the corrugated tubing after cleaning, collects to corrugated tubing Dai Cun district。
4. a screw tube type absorber manufacture method, it is characterised in that for manufacturing the screw tube type absorber as described in any one of claim 1-2, described manufacture equipment, including:
Clamping part, roll-in portion and cleaning part, roll-in portion also includes casing, scroll chuck it is provided with in casing, the handle of a knife of gin blade in scroll chuck one end clamping casing, the output shaft of the reductor that scroll chuck other end connecting box is external, the belt pulley on the power shaft of reductor connects drive motor by transmission band；Also including lubricant ejecting gun in described casing, the other end of lubricant ejecting gun is positioned at the lubricant tank outside casing, adopts circulating pump supply。
5. hollow pipe cotton gin according to claim 4, it is characterised in that also include the recovery holes of bottom in described casing, the recovery tube below recovery holes connects lubricant tank。
6. hollow pipe cotton gin according to claim 4, it is characterized in that, it is provided with clamping part outside described casing, clamping part includes the bracing frame outside casing, it is with bolts that bracing frame is arranged over supporting transverse slat, bracing frame and support transverse slat, supports transverse slat and is provided with the support column of vertical direction, the top of support column adopts bolt to fix upper and lower two clamping wheels, and work piece enters roll-in portion by clamping part。
7. hollow pipe cotton gin according to claim 4, it is characterised in that the rear end in described roll-in portion is provided with cleaning part。
8. hollow pipe cotton gin according to claim 7, it is characterized in that, described cleaning part includes cleaning case, cleaning case is provided with some bearings near the one end in cotton ginning portion, brush roll it is provided with in bearing, brush roll in cleaning case is provided with hairbrush, and the brush roll outside cleaning case connects speed reducer output shaft, and the belt pulley on the power shaft of reductor connects drive motor by transmission band。
9. hollow pipe cotton gin according to claim 8, it is characterised in that described hairbrush is divided into cleaning hairbrush and removes hairbrush, cleans hairbrush and is positioned at position on the lower side, workpiece both sides, removes hairbrush and is positioned at above workpiece, and away from roll-in portion。
10. hollow pipe cotton gin according to claim 7, it is characterised in that being provided with degreasing agent in described cleaning case, liquid level is positioned at below workpiece。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062176.9A CN105698442B (en) | 2016-01-29 | 2016-01-29 | Screw tube type absorber and its manufacture method and manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062176.9A CN105698442B (en) | 2016-01-29 | 2016-01-29 | Screw tube type absorber and its manufacture method and manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105698442A true CN105698442A (en) | 2016-06-22 |
| CN105698442B CN105698442B (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610062176.9A Active CN105698442B (en) | 2016-01-29 | 2016-01-29 | Screw tube type absorber and its manufacture method and manufacturing equipment |
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| Country | Link |
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| CN (1) | CN105698442B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806722A (en) * | 2017-11-30 | 2018-03-16 | 山东奇威特太阳能科技有限公司 | Absorber with steel strip winding structure and preparation method thereof |
| CN109482793A (en) * | 2018-12-20 | 2019-03-19 | 温州中特标准件有限公司 | A kind of blanking clamp and workpiece of thread rolling machine select cleaning detection chain |
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| CN205481904U (en) * | 2016-01-29 | 2016-08-17 | 山东奇威特太阳能科技有限公司 | Screw tubular absorber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806722A (en) * | 2017-11-30 | 2018-03-16 | 山东奇威特太阳能科技有限公司 | Absorber with steel strip winding structure and preparation method thereof |
| CN107806722B (en) * | 2017-11-30 | 2023-10-27 | 山东奇威特太阳能科技有限公司 | Absorber with steel belt winding structure and preparation method thereof |
| CN109482793A (en) * | 2018-12-20 | 2019-03-19 | 温州中特标准件有限公司 | A kind of blanking clamp and workpiece of thread rolling machine select cleaning detection chain |
| CN109482793B (en) * | 2018-12-20 | 2024-05-03 | 温州中特标准件有限公司 | Discharging clamp of thread rolling machine and workpiece selecting, cleaning and detecting chain |
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| Publication number | Publication date |
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| CN105698442B (en) | 2018-02-02 |
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