CN216009836U

CN216009836U - Vacuum-resistant polytetrafluoroethylene tube

Info

Publication number: CN216009836U
Application number: CN202122254518.6U
Authority: CN
Inventors: 钱文林
Original assignee: Nantong Litai Chemical Equipment Co ltd
Current assignee: Nantong Litai Chemical Equipment Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-03-11
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses a polytetrafluoroethylene pipe of nai vacuum, including first outer steel pipe, the outer steel pipe of second is installed to the one end of first outer steel pipe, all be equipped with the polytetrafluoroethylene inner tube on the inner wall of the outer steel pipe of first outer steel pipe and second, all install the sealing ring on the outer steel pipe inner wall of first outer steel pipe and the second of polytetrafluoroethylene inner tube both sides, the central point on first outer steel pipe and the outer steel pipe top of second puts the department and all is equipped with the vacuum tube, the bottom of vacuum tube extends to the inside of the outer steel pipe of first outer steel pipe and second, the sealing plug is installed at the top of vacuum tube, be fixed with the second flange on the outer wall of first outer steel pipe one side, be fixed with first flange on the outer wall of the outer steel pipe one side of second. The utility model discloses not only avoided the polytetrafluoroethylene inner tube to be located the phenomenon that the inner wall of the outer steel pipe of first outer steel pipe and second produced and slided, convenience when having improved polytetrafluoroethylene pipe and using has reached dirt-proof purpose moreover.

Description

Vacuum-resistant polytetrafluoroethylene tube

Technical Field

The utility model relates to the technical field of pipes, in particular to a vacuum-resistant polytetrafluoroethylene pipe.

Background

The polytetrafluoroethylene has good chemical stability, corrosion resistance, sealing property, high lubrication non-sticking property, electrical insulation property and good ageing resistance, is mainly used as engineering plastics, and can be used as a raw material of a pipe due to good comprehensive performance, so that a corresponding polytetrafluoroethylene pipe is derived.

At present, polytetrafluoroethylene pipes on the market are not convenient for vacuum-resistant treatment, so that certain gaps are easy to exist between the polytetrafluoroethylene inner pipe and the first outer steel pipe and between the polytetrafluoroethylene inner pipe and the second outer steel pipe, and the polytetrafluoroethylene inner pipe is further translocated on the inner wall of the outer steel pipe to generate the slippage phenomenon.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a polytetrafluoroethylene pipe of nai vacuum to it is not convenient for carry out the problem of nai vacuum treatment to provide polytetrafluoroethylene pipe in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polytetrafluoroethylene pipe of nai vacuum, includes first outer steel pipe, the outer steel pipe of second is installed to the one end of first outer steel pipe, all be equipped with the polytetrafluoroethylene inner tube on the inner wall of the outer steel pipe of first outer steel pipe and second, all install the sealing ring on the outer steel pipe inner wall of first outer steel pipe of polytetrafluoroethylene inner tube both sides and second, the central point department of putting on first outer steel pipe and the outer steel pipe top of second all is equipped with the vacuum tube, the bottom of vacuum tube extends to the inside of the outer steel pipe of first outer steel pipe and second, the sealing plug is installed at the top of vacuum tube, be fixed with the second flange on the outer wall of first outer steel pipe one side, be fixed with first flange on the outer wall of the outer steel pipe one side of second.

Preferably, a third flange is fixed on the outer wall of one side, far away from the second flange, of the first outer steel pipe, and a fourth flange is fixed on the outer wall of one side, far away from the first flange, of the second outer steel pipe, so that the outer polytetrafluoroethylene pipe can be connected to be used as required.

Preferably, the inner walls of the two sides of the polytetrafluoroethylene inner tube are respectively fixed with two groups of placement frames, and the inner sides of the placement frames are provided with dustproof mesh plates so as to be subjected to dustproof treatment.

Preferably, fan-shaped fit grooves are formed in the outer walls of the two sides of the dustproof screen plate and are symmetrical with respect to the center line of the dustproof screen plate, so that the dustproof screen plate can be conveniently installed on the inner side of the placement frame.

Preferably, the first flange, the second flange, the third flange and the fourth flange are provided with pin holes at equal intervals inside, and two ends of each pin hole extend to the outside of the first flange, the second flange, the third flange and the fourth flange, so that the polytetrafluoroethylene tube can be assembled and connected.

Preferably, a locking nut is arranged on the outer wall of the fourth flange at the pin hole position, a locking bolt is arranged on the outer wall of the third flange at the pin hole position, and one end of the locking bolt penetrates through the pin hole and is in threaded connection with the locking nut, so that the first outer steel pipe and the second outer steel pipe are connected.

Compared with the prior art, the beneficial effects of the utility model are that: this resistant vacuum polytetrafluoroethylene pipe has not only avoided the polytetrafluoroethylene inner tube to be located the phenomenon that the inner wall of the outer steel pipe of first outer steel pipe and second produced and slide, and the convenience when having improved polytetrafluoroethylene pipe and using has reached dirt-proof purpose moreover.

(1) Through setting up the sealing ring on the outer steel pipe inner wall of first outer steel pipe and second of polytetrafluoroethylene inner tube both sides, so that it carries out sealing process to the both ends of polytetrafluoroethylene inner tube, upwards pulling the sealing plug again, make the vacuum tube be the state of opening and shutting, the air between polytetrafluoroethylene inner tube and the outer steel pipe of first outer steel pipe and second is taken out by the vacuum tube this moment, so that be vacuum state between polytetrafluoroethylene inner tube and the outer steel pipe of first outer steel pipe and second, install the sealing plug in the top of vacuum tube afterwards, can eliminate the clearance between polytetrafluoroethylene inner tube and the outer steel pipe of first outer steel pipe and second, thereby the phenomenon that the inner wall that the polytetrafluoroethylene inner tube is located the outer steel pipe of first outer steel pipe and second produced and slided has been avoided.

(2) Through rotatory locking bolt, make its one end pass through the pinhole and screw in to lock nut's inside, can use first outer steel pipe and the outer steel pipe assembled joint of second through third flange and fourth flange, and be located and be provided with second flange and first flange respectively on the outer wall of first outer steel pipe and the outer steel pipe opposite side of second, can be according to the demand with the help of outside bolt and nut connection multiunit polytetrafluoroethylene pipe to convenience when polytetrafluoroethylene pipe uses has been improved.

(3) Through agreeing with the groove calibration with fan-shaped in arrangement frame position department, press and rotate dustproof otter board again for dustproof otter board is installed in the inboard of arranging the frame, and dustproof otter board then can carry out the separation to the inside both sides in the polytetrafluoroethylene inner tube this moment and handle, flows into the inside to the polytetrafluoroethylene inner tube with the external dust of reduction, thereby has reached dirt-proof purpose.

Drawings

Fig. 1 is a schematic view of the front view cross-section structure of the present invention.

Fig. 2 is an enlarged schematic structural diagram of a point a in fig. 1 according to the present invention.

Fig. 3 is a schematic side view of the dustproof mesh plate of the present invention.

Fig. 4 is a schematic side view of the present invention.

In the figure: 1. a first outer steel tube; 2. a sealing plug; 3. a second outer steel tube; 4. a vacuum tube; 5. a polytetrafluoroethylene inner tube; 6. a mounting frame; 7. a dustproof screen plate; 8. a seal ring; 9. a first flange; 10. a second flange; 11. a third flange; 12. a fourth flange; 13. locking the nut; 14. locking the bolt; 15. a pin hole; 16. the fan-shaped fit groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. 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.

Referring to fig. 1-4, the present invention provides an embodiment: the utility model provides a polytetrafluoroethylene pipe of nai vacuum, includes first outer steel pipe 1, and the outer steel pipe 3 of second is installed to the one end of first outer steel pipe 1, is fixed with third flange 11 on the outer wall of second flange 10 one side is kept away from to first outer steel pipe 1, is fixed with fourth flange 12 on the outer wall of first flange 9 one side is kept away from to the outer steel pipe 3 of second.

When in use, the third flange 11 and the fourth flange 12 are arranged on the outer wall of one side of the first outer steel pipe 1 and the second outer steel pipe 3, so that the outer polytetrafluoroethylene pipe can be connected for use as required.

The first flange 9, the second flange 10, the third flange 11 and the fourth flange 12 are all provided with pin holes 15 at equal intervals inside, and both ends of the pin holes 15 extend to the outside of the first flange 9, the second flange 10, the third flange 11 and the fourth flange 12.

When the polytetrafluoroethylene pipe assembling and connecting device is used, the pin holes 15 are arranged in the first flange 9, the second flange 10, the third flange 11 and the fourth flange 12 at equal intervals, so that the polytetrafluoroethylene pipe is assembled and connected.

And a locking nut 13 is arranged on the outer wall of the fourth flange 12 at the position of the pin hole 15, a locking bolt 14 is arranged on the outer wall of the third flange 11 at the position of the pin hole 15, and one end of the locking bolt 14 penetrates through the pin hole 15 and is in threaded connection with the locking nut 13.

In use, the first outer steel pipe 1 and the second outer steel pipe 3 are connected by rotating the lock bolt 14 so that one end thereof penetrates the pin hole 15 and is screwed into the lock nut 13.

All be equipped with polytetrafluoroethylene inner tube 5 on the inner wall of first outer steel pipe 1 and second outer steel pipe 3, all be fixed with two sets of arrangement frames 6 on the inner wall of polytetrafluoroethylene inner tube 5 both sides, the inboard of arranging frame 6 is installed dustproof otter board 7.

When in use, the dustproof mesh plates 7 are arranged on two sides in the polytetrafluoroethylene inner pipe 5 so as to facilitate dustproof treatment.

The outer walls of two sides of the dustproof screen plate 7 are provided with fan-shaped conjunction grooves 16, and the fan-shaped conjunction grooves 16 are symmetrical about the central line of the dustproof screen plate 7.

When in use, the fan-shaped matching grooves 16 are aligned at the positions of the setting frame 6, and then the dustproof mesh plate 7 is pressed and rotated so as to install the dustproof mesh plate 7 on the inner side of the setting frame 6.

Sealing rings 8 are arranged on the inner walls of the first outer steel pipe 1 and the second outer steel pipe 3 at two sides of the polytetrafluoroethylene inner pipe 5, vacuum pipes 4 are arranged at the central positions of the top ends of the first outer steel pipe 1 and the second outer steel pipe 3, and the bottom ends of the vacuum pipes 4 extend to the inner parts of the first outer steel pipe 1 and the second outer steel pipe 3.

The sealing plug 2 is installed at the top of the vacuum tube 4, a second flange 10 is fixed on the outer wall of one side of the first outer steel tube 1, and a first flange 9 is fixed on the outer wall of one side of the second outer steel tube 3.

When the dustproof mesh plate 7 is pressed and rotated, the dustproof mesh plate 7 is installed on the inner side of the installing frame 6, at the moment, the dustproof mesh plate 7 can perform blocking treatment on two sides inside the polytetrafluoroethylene inner tube 5 to reduce the inflow of dust into the polytetrafluoroethylene inner tube 5 from the outside, finally, the sealing rings 8 are arranged on the inner walls of the first outer steel pipe 1 and the second outer steel pipe 3 on two sides of the polytetrafluoroethylene inner pipe 5, so that the sealing rings seal two ends of the polytetrafluoroethylene inner pipe 5, the sealing plugs 2 are pulled upwards, the vacuum pipe 4 is in an opening and closing state, air between the polytetrafluoroethylene inner pipe 5 and the first outer steel pipe 1 and between the polytetrafluoroethylene inner pipe 3 and the second outer steel pipe 3 is drawn out through the vacuum pipe 4, so that the polytetrafluoroethylene inner pipe 5 and the first outer steel pipe 1 and between the second outer steel pipe 3 are in a vacuum state, the sealing plugs 2 are installed at the top of the vacuum pipe 4, gaps between the polytetrafluoroethylene inner pipe 5 and the first outer steel pipe 1 and between the polytetrafluoroethylene inner pipe 3 and the second outer steel pipe 3 can be eliminated, the purpose of vacuum resistance is achieved, and the use of the polytetrafluoroethylene pipe is completed.

Claims

1. The vacuum-resistant polytetrafluoroethylene tube is characterized by comprising a first outer steel tube (1), a second outer steel tube (3) is installed at one end of the first outer steel tube (1), polytetrafluoroethylene inner tubes (5) are arranged on the inner walls of the first outer steel tube (1) and the second outer steel tube (3), sealing rings (8) are installed on the inner walls of the first outer steel tube (1) and the second outer steel tube (3) on two sides of the polytetrafluoroethylene inner tube (5), vacuum tubes (4) are arranged at the central positions of the top ends of the first outer steel tube (1) and the second outer steel tube (3), the bottom ends of the vacuum tubes (4) extend into the first outer steel tube (1) and the second outer steel tube (3), sealing plugs (2) are installed at the tops of the vacuum tubes (4), a second flange (10) is fixed on the outer wall of one side of the first outer steel tube (1), and a first flange (9) is fixed on the outer wall of one side of the second outer steel pipe (3).

2. A vacuum-resistant ptfe tube as claimed in claim 1, wherein: and a third flange (11) is fixed on the outer wall of one side, far away from the second flange (10), of the first outer steel pipe (1), and a fourth flange (12) is fixed on the outer wall of one side, far away from the first flange (9), of the second outer steel pipe (3).

3. A vacuum-resistant ptfe tube as claimed in claim 1, wherein: all be fixed with two sets of arrangement frames (6) on the inner wall of polytetrafluoroethylene inner tube (5) both sides, install dustproof mesh board (7) in the inboard of arrangement frame (6).

4. A vacuum-resistant ptfe tube as set forth in claim 3, wherein: the dustproof screen plate is characterized in that fan-shaped conjunction grooves (16) are formed in the outer walls of the two sides of the dustproof screen plate (7), and the fan-shaped conjunction grooves (16) are symmetrical about the center line of the dustproof screen plate (7).

5. A vacuum-resistant ptfe tube as set forth in claim 2, wherein: the inner parts of the first flange (9), the second flange (10), the third flange (11) and the fourth flange (12) are all provided with pin holes (15) at equal intervals, and two ends of each pin hole (15) extend to the outer parts of the first flange (9), the second flange (10), the third flange (11) and the fourth flange (12).

6. A vacuum-resistant polytetrafluoroethylene tube according to claim 5, wherein: be equipped with lock nut (13) on fourth flange (12) outer wall in pinhole (15) position department, install lock bolt (14) on third flange (11) outer wall in pinhole (15) position department, the one end of lock bolt (14) runs through pinhole (15) and with lock nut (13) threaded connection.