CN212615818U - Special screw - Google Patents
Special screw Download PDFInfo
- Publication number
- CN212615818U CN212615818U CN202020291095.8U CN202020291095U CN212615818U CN 212615818 U CN212615818 U CN 212615818U CN 202020291095 U CN202020291095 U CN 202020291095U CN 212615818 U CN212615818 U CN 212615818U
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- China
- Prior art keywords
- screw
- heat exchange
- bolt head
- exchange tube
- special screw
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Abstract
The utility model provides a special screw, include: the screw body comprises a bolt head and a screw rod, the bolt head is located on the screw rod, and a through hole for passing through the heat exchange tube 5 is formed in the center of the screw rod and the center of the bolt head. The utility model provides a pair of special screw can be through the improvement to U type screwed pipe connected mode in U type heat exchange tube and the thermal-arrest header among the solar energy evacuated collector tube to the realization does benefit to the purpose of dismantling, maintaining, changing, has solved one of them heat exchange tube seepage appears in the pipeline, just must change the problem of relevant thermal-arrest header, the utility model provides a special screw, the structure is simple and convenient, do benefit to the installation and change, adopts stainless steel material, and live time is long to low in manufacturing cost, the leakproofness is good.
Description
Technical Field
The utility model relates to a screw field especially relates to a special screw.
Background
The screw is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined circular rotation and friction of the object. Screws are a common term for fasteners, a common spoken word. The screw is indispensable industry requisite in daily life: extremely small screws used for cameras, glasses, clocks, electronics, and the like; general screws for televisions, electric appliances, musical instruments, furniture, and the like; large screws and nuts are used for engineering, buildings and bridges; transportation equipment, airplanes, electric cars, automobiles, and the like are used with screws of different sizes. The screw has an important task in industry, and as long as there is industry on earth, the function of the screw is always important. The screw is a common invention in production and life of people for thousands of years, and is the first invention of human according to the application field.
The solar vacuum tube is a core element of the solar water heater, is known as the heart of the solar water heater, the quality of the vacuum tube directly influences the service life and the performance of the solar water heater, the rapid development of the solar industry drives the development of vacuum tube enterprises, on one hand, the patented technology around the vacuum tube is continuously updated, and on the other hand, the vacuum tube enterprises and the production line are increased like spring bamboo shoots after rain in recent years.
U-shaped heat exchange tubes in the existing solar vacuum heat collection tubes are mainly connected with U-shaped tubes of a heat collection header in a welding mode to form an individual pipeline, one of the heat exchange tubes in the pipeline leaks, and the associated heat collection header needs to be replaced, so that the replacement difficulty is increased. Therefore, a tool for improving the connection mode between the U-shaped heat exchange tube and the U-shaped row tube of the heat collection tube in the solar vacuum heat collection tube is needed in the prior art.
Therefore, the prior art has yet to be developed.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a special screw for improve the connected mode of U type heat exchange tube and thermal-arrest header U type pipe among the solar vacuum heat collecting tube among the prior art, thereby realize doing benefit to the purpose of dismantling, maintaining and changing.
To achieve the above and other related objects, the present invention provides a special screw, including: the screw body comprises a bolt head and a screw rod, the bolt head is located on the screw rod, and a through hole for passing through a heat exchange tube is formed in the center of the screw rod and the center of the bolt head.
In an embodiment of the present invention, a groove for fixing the heat exchange tube is provided inside the screw rod near the lower end of the through hole.
In an embodiment of the present invention, the bolt head is a regular hexagon cylinder.
In an embodiment of the present invention, the screw is provided with a thread.
In an embodiment of the present invention, the diameter of the bolt head is 21.95 mm.
In an embodiment of the present invention, the diameter of the through hole is 10.2 mm.
In an embodiment of the present invention, the special screw is made of stainless steel.
As mentioned above, the utility model discloses a special screw has following beneficial effect: the utility model provides a pair of special screw can be through the improvement to U type heat exchange tube and thermal-arrest header U type union coupling mode among the solar vacuum heat collecting tube to the realization does benefit to the purpose of dismantling, maintaining, changing, has solved one of them heat exchange tube seepage appearance in the pipeline, just must change the problem of associated thermal-arrest header, the utility model provides a special screw, the structure is simple and convenient, do benefit to the installation and change, adopt stainless steel material, the live time is long to low in manufacturing cost, the leakproofness is good.
Drawings
Fig. 1 is a schematic structural diagram of a special screw disclosed in an embodiment of the present invention.
Fig. 2 is a schematic view showing a usage status of a special screw and a heat exchange tube disclosed in an embodiment of the present invention.
Fig. 3 is a schematic view showing a usage state of a special screw disclosed in the present novel embodiment when used together with a heat exchange tube, a U-shaped threaded tube, and a heat collecting header.
Description of the element reference numerals
1 bolt head
2 screw rod
3 through hole
4 grooves
5 Heat exchange tube
6U-shaped threaded pipe
7 heat collecting header
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 3. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 1, the present invention provides a special screw, including: the screw body comprises a bolt head 1 and a screw rod 2, the bolt head 1 is located on the screw rod 2, and a through hole 3 for passing through a heat exchange tube 5 is formed in the center of the screw rod 2 and the bolt head 1.
Specifically, a groove 4 for fixing the heat exchange tube 5 is arranged in the screw rod 2 and close to the lower end of the through hole 3.
Specifically, the bolt head 1 is a regular hexagonal cylinder.
Specifically, the screw 2 is provided with a thread.
Specifically, the diameter of the bolt head 1 is 21.95 mm.
Specifically, the diameter of the through hole 3 is 10.2 mm.
Specifically, the special screw is made of stainless steel and is machined.
The utility model discloses a special screw for U type heat exchange tube hookup among U type screwed pipe 6 and evacuated collector tube forms a connection loop, and simple structure, installation are dismantled and are changed conveniently, and during the use, the threaded connection is adopted with U type screwed pipe 6 to U type heat exchange tube among the evacuated collector tube.
As shown in fig. 2, the heat exchange pipe 5 passes through the through-hole 3 and is fixed at the position of the groove 4.
As shown in fig. 3, after the heat exchange tube 5 passes through the through hole 3 and is fixed at the position of the groove 4, the heat exchange tube is placed at two ends of the U-shaped threaded tube 6, a tetrafluoro gasket is arranged between the special screw and the U-shaped threaded tube 6, the U-shaped threaded tube 6 is fixed inside the heat collection header 7, the vacuum heat collection tube is arranged outside the heat exchange tube 5, the U-shaped threaded tube 6 is connected with the U-shaped heat exchange tube in the vacuum heat collection tube to form a connection loop, the special screw is detached when the U-shaped threaded tube needs to be replaced and checked, the disassembly, the maintenance and the replacement are facilitated, the problem that one heat exchange tube 5 in the pipeline leaks and the associated heat collection header 7.
To sum up, the utility model provides a pair of special screw can be through to the improvement of 6 connected modes of U type screwed pipe in U type heat exchange tube and the thermal-arrest header 7 among the solar energy evacuated collector tube to the realization does benefit to the purpose of dismantling, maintaining, changing, has solved one of them heat exchange tube 5 and has appeared the seepage in the pipeline, just must change the problem of relevant thermal-arrest header 7, the utility model provides a special screw, the structure is simple and convenient, do benefit to the installation and change, adopts stainless steel material, and live time is long to low in manufacturing cost, the leakproofness is good.
Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A special screw, comprising: the screw body, its characterized in that: the screw body comprises a bolt head and a screw rod, the bolt head is positioned on the screw rod, and a through hole for passing through a heat exchange tube is formed in the center positions of the screw rod and the bolt head; and a groove for fixing the heat exchange tube is arranged in the screw rod and close to the lower end of the through hole.
2. The special screw according to claim 1, characterized in that: the bolt head is a regular hexagon column.
3. The special screw according to claim 1, characterized in that: the screw rod is provided with threads.
4. The special screw according to claim 1, characterized in that: the diameter of the bolt head is 21.95 mm.
5. The special screw according to claim 1, characterized in that: the diameter of the through hole is 10.2 mm.
6. The special screw according to claim 1, characterized in that: the special screw is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020291095.8U CN212615818U (en) | 2020-03-10 | 2020-03-10 | Special screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020291095.8U CN212615818U (en) | 2020-03-10 | 2020-03-10 | Special screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212615818U true CN212615818U (en) | 2021-02-26 |
Family
ID=74728532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020291095.8U Active CN212615818U (en) | 2020-03-10 | 2020-03-10 | Special screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212615818U (en) |
-
2020
- 2020-03-10 CN CN202020291095.8U patent/CN212615818U/en active Active
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| GR01 | Patent grant |