CN212536649U

CN212536649U - Double-step liner tube connecting device

Info

Publication number: CN212536649U
Application number: CN202021162980.2U
Authority: CN
Inventors: 顾海波
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-02-12
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a two-step liner tube connecting device, including liner tube, first bearing and second bearing, the one end of liner tube is equipped with first external screw thread, first fixed orifices have all been seted up to the both sides of first external screw thread, the other end of liner tube is equipped with second external screw thread, second fixed orifices have all been seted up to the both sides of second external screw thread, the inside of first bearing is equipped with the thread bush, sets up a step in the middle of the two-step rubber seal ring that this connecting device adopted, has strengthened the stability of fixed orifices bulge, can not appear because the installation is improper, and cause the bulge to warp inwards and can not the bellied phenomenon, improved the sealed rubber ring bulge bearing capacity; when the liner tube is connected with the bearing, the bearing is stabilized without additional circular rubber rings at the two ends, so that the material cost is reduced; the double-step rubber sealing ring is designed into double steps, the stability is good, the liner tube is firmly connected with the bearing and is not easy to fall off, and the use safety is guaranteed.

Description

Double-step liner tube connecting device

Technical Field

The utility model relates to a bushing pipe connection field specifically is a two-step bushing pipe connecting device.

Background

The plastic-lined steel pipe is an upgraded product of the traditional galvanized pipe, and is characterized in that a galvanized seamless steel pipe and a welded steel pipe are used as base pipes, after welding ribs are removed from the inner wall of the base pipes, a food-grade Polyethylene (PE) pipe which is equal to the galvanized pipe in diameter is lined in the base pipes, the thickness requirement of a polyethylene lining layer meets the standard of HG/T20538 and 2016, and finally, the base pipes are molded after being pressurized and heated for a certain time. The two rubber sealing rings of the existing bearing are planar, the two bearings are not easy to be concentric during installation of the liner tube, the installation is very inconvenient, dust and rainwater enter the liner tube during normal use, the sealing effect is poor, the service life cannot be guaranteed, the rubber sealing rings on the two sides of the bearing are planar, and when the bearing is installed, the rubber rings are additionally installed on the liner tube to fix the bearing, so that the installation is troublesome and difficult, the labor cost is high, the liner tube is poor in firm connection performance with the bearings, and the liner tube is easy to fall off and inconvenient to use.

Disclosure of Invention

The utility model aims at prior art's defect, provide a two-step bushing pipe connecting device to solve the problem that above-mentioned background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two-step bushing pipe connecting device, includes bushing pipe, first bearing and second bearing, the one end of bushing pipe is equipped with first external screw thread, first fixed orifices has all been seted up to the both sides of first external screw thread, the other end of bushing pipe is equipped with the second external screw thread, the second fixed orifices has all been seted up to the both sides of second external screw thread, the inside of first bearing is equipped with the thread bush, the outside of thread bush is equipped with the steel ball, the one end both sides of thread bush are equipped with the spring mounting groove, install the spring in the spring mounting groove, spherical fixed pin is installed at the top of spring, first sealing washer is installed to one side of first bearing, the second sealing washer is installed to the opposite side of first bearing, the third sealing washer is installed to one side of second bearing, the fourth sealing washer is installed to the opposite side.

As a preferred technical scheme of the utility model, first sealing washer, second sealing washer, third sealing washer and fourth sealing washer are two-step rubber seal.

As a preferred technical scheme of the utility model, the middle part connecting hole of first sealing washer, second sealing washer, third sealing washer and fourth sealing washer is by diminishing greatly, has the plane to become protruding, and establishes a step in the bulge intermediate position.

As an optimal technical scheme of the utility model, the bushing pipe passes through the screw thread with the thread bush in first bearing and the second bearing respectively and links to each other.

As an optimized technical scheme of the utility model, spherical fixed pin links to each other with first fixed orifices and second fixed orifices elasticity.

As an optimal technical scheme of the utility model, spherical fixed pin links to each other with the spring welding, the spring links to each other with the spring mounting groove welding.

As an optimal technical scheme of the utility model, the thread bush passes through the steel ball activity with first bearing and second bearing respectively and links to each other.

The utility model has the advantages that: the connecting device adopts the double-step rubber sealing ring, the step is arranged in the middle of the double-step rubber sealing ring, the stability of the convex part of the fixing hole is enhanced, the phenomenon that the convex part is deformed inwards and cannot be protruded due to improper installation can not occur, and the bearing capacity of the convex part of the sealing rubber ring is improved; when the liner tube is connected with the bearing, the bearing is stabilized without additional circular rubber rings at the two ends, so that the material cost is reduced; the double-step rubber sealing ring is designed into double steps, the stability is good, the liner tube is firmly connected with the bearing and is not easy to fall off, and the use safety is guaranteed.

Drawings

FIG. 1 is a schematic view of the disassembled structure of the present invention;

fig. 2 is a cross-sectional view of the bearing of the present invention;

fig. 3 is a schematic structural view of the sealing ring of the present invention;

fig. 4 is a cross-sectional view of the sealing ring of the present invention.

In the figure: 1. liner tube, 2, first external screw thread, 3, first fixed orifices, 4, second external screw thread, 5, second fixed orifices, 6, third sealing washer, 7, second bearing, 8, fourth sealing washer, 9, first sealing washer, 10, first bearing, 11, second sealing washer, 12, thread bush, 13, steel ball, 14, spring mounting groove, 15, spring, 16, spherical fixed pin.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.

Example (b): referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a two-step bushing pipe connecting device, including bushing pipe 1, first bearing 10 and second bearing 7, the one end of bushing pipe 1 is equipped with first external screw thread 2, first fixed orifices 3 have all been seted up to the both sides of first external screw thread 2, the other end of bushing pipe 1 is equipped with second external screw thread 4, second fixed orifices 5 has all been seted up to the both sides of second external screw thread 4, the inside of first bearing 10 is equipped with thread bush 12, the outside of thread bush 12 is equipped with steel ball 13, the one end both sides of thread bush 12 are equipped with spring mounting groove 14, install spring 15 in the spring mounting groove 14, spherical fixed pin 16 is installed at the top of spring 15, first sealing washer 9 is installed to one side of first bearing 10, second sealing washer 11 is installed to the opposite side of first bearing 10, third sealing washer 6 is installed to one side of second bearing 7, fourth sealing washer 8 is installed to.

The first sealing ring 9, the second sealing ring 11, the third sealing ring 6 and the fourth sealing ring 8 are all double-step rubber sealing rings.

The connecting holes in the middle parts of the first sealing ring 9, the second sealing ring 11, the third sealing ring 6 and the fourth sealing ring 8 are changed from big to small, a plane is changed into a bulge, and a step is arranged in the middle of the bulge.

The liner 1 is threadedly connected to threaded sleeves 12 in the first bearing 10 and the second bearing 7, respectively.

The spherical fixing pin 16 is elastically connected to the first fixing hole 3 and the second fixing hole 5.

The spherical fixing pin 16 is connected with the spring 15 in a welding way, and the spring 15 is connected with the spring mounting groove 14 in a welding way.

The threaded sleeve 12 is movably connected with the first bearing 10 and the second bearing 7 through steel balls 13 respectively.

The working principle is as follows: a double-step liner tube connecting device comprises a liner tube 1, a first external thread 2, a first fixing hole 3, a second external thread 4, a second fixing hole 5, a third sealing ring 6, a second bearing 7, a fourth sealing ring 8, a first sealing ring 9, a first bearing 10, a second sealing ring 11, a thread bush 12, a steel ball 13, a spring mounting groove 14, a spring 15 and a spherical fixing pin 16, wherein the first external thread 2 at one end of the liner tube 1 is inserted into the thread bush 12 of the first bearing 10 during mounting, by rotating the liner tube 1, the first fixing hole 3 is quickly clamped in the spherical fixing pin 16, the second external thread 4 at the other end is then fitted into the threaded sleeve 12 of the second bearing 7, while the first 9 and second 11 seal rings are fitted on both sides of the first bearing 10 and the third 6 and fourth 8 seal rings are fitted on both sides of the second bearing 7, respectively. The improved double-step rubber sealing ring is round, the middle connecting hole is gradually reduced, the plane is changed into a bulge, and a step is arranged in the middle of the bulge to form two steps, so that the axial fixing effect is realized; because the inner ring in the middle of the sealing ring is gradually reduced from big to small, the two ends of the middle liner tube are easy to be concentric, the central lines are consistent, and the middle liner tube cannot swing randomly, so that the technical requirement on assembly personnel is not high, the installation is convenient, the time is saved, the efficiency is improved, and the installation labor cost is reduced; the step is arranged in the middle of the double-step rubber sealing ring, so that the stability of the convex part of the fixing hole is enhanced, and the phenomenon that the convex part deforms inwards and cannot be convex due to improper installation to bring non-ideal effects to installation and students is avoided, so that the bearing capacity of the convex part of the sealing rubber ring is improved; when the liner tube is connected with the bearing, the bearing is stabilized without additional circular rubber rings at the two ends, so that the material cost is reduced; the double-step rubber sealing ring is designed into double steps, so that the stability is good, and the inner ring and the liner tube are completely sealed, so that the moisture-proof and waterproof effects are good; the material of the double-step rubber sealing ring is improved to 30% from the existing 25% rubber content, and the double-step rubber sealing ring cannot deform in the installation process because the rubber has entropy elasticity, so that the stability is strong; the protruding double steps of the double-step rubber sealing ring have entropy elasticity, so that the double-step rubber sealing ring has good stability, a finished product cannot deform after being packaged, disqualification after packaging is reduced, and the finished product cannot be used or is inconvenient to assemble, and the cost of the finished product is saved and the assembly cost is increased due to the inconvenience of assembly; the improved double-step rubber sealing ring has the advantages that the service life is prolonged, the utilization rate of finished products is improved, the yield cost is reduced, and the assembly cost is reduced.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A two-step liner connection comprising a liner (1), a first bearing (10) and a second bearing (7), characterized in that: one end of the liner tube (1) is provided with a first external thread (2), two sides of the first external thread (2) are respectively provided with a first fixed hole (3), the other end of the liner tube (1) is provided with a second external thread (4), two sides of the second external thread (4) are respectively provided with a second fixed hole (5), a thread sleeve (12) is arranged inside the first bearing (10), steel balls (13) are arranged outside the thread sleeve (12), two sides of one end of the thread sleeve (12) are provided with spring mounting grooves (14), a spring (15) is mounted in each spring mounting groove (14), a spherical fixed pin (16) is mounted at the top of each spring (15), a first sealing ring (9) is mounted on one side of the first bearing (10), a second sealing ring (11) is mounted on the other side of the first bearing (10), a third sealing ring (6) is mounted on one side of the second bearing (7), and a fourth sealing ring (8) is arranged on the other side of the second bearing (7).

2. A two-step liner connection according to claim 1, wherein: the first sealing ring (9), the second sealing ring (11), the third sealing ring (6) and the fourth sealing ring (8) are all double-step rubber sealing rings.

3. A two-step liner connection according to claim 1, wherein: the middle connecting holes of the first sealing ring (9), the second sealing ring (11), the third sealing ring (6) and the fourth sealing ring (8) are reduced from big to small, a plane is changed into a bulge, and a step is arranged in the middle of the bulge.

4. A two-step liner connection according to claim 1, wherein: the liner tube (1) is respectively connected with a threaded sleeve (12) in the first bearing (10) and the second bearing (7) through threads.

5. A two-step liner connection according to claim 1, wherein: the spherical fixing pin (16) is elastically connected with the first fixing hole (3) and the second fixing hole (5).

6. A two-step liner connection according to claim 1, wherein: the spherical fixing pin (16) is connected with the spring (15) in a welding mode, and the spring (15) is connected with the spring mounting groove (14) in a welding mode.

7. A two-step liner connection according to claim 1, wherein: the threaded sleeve (12) is movably connected with the first bearing (10) and the second bearing (7) through steel balls (13) respectively.