CN210004009U

CN210004009U - anti-drop type external thread joint for connecting pipe

Info

Publication number: CN210004009U
Application number: CN201920566084.3U
Authority: CN
Inventors: 范茂前
Original assignee: Wenzhou Annai Pipe Fitting Co Ltd
Current assignee: Wenzhou Annai Pipe Fitting Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-01-31
Anticipated expiration: 2029-04-24

Abstract

The utility model discloses a kind of connecting tube is with outer screwed joint of anti-drop type, including the pipe connection head, the end fixedly connected with connecting sleeve of pipe connection head, connecting sleeve's inner wall fixedly connected with barb, barb evenly distributed is at connecting sleeve's inner wall, the inside end that just is located connecting sleeve between the corresponding both sides of pipe connection head and plastic conduit is provided with seal gasket, connecting sleeve's surface end threaded connection has lock nut, connecting sleeve keeps away from the end of pipe connection head and is located lock nut's inside cooperation and is connected with conical surface elasticity snap ring, conical surface elasticity snap ring's inner wall and the surface that is located plastic conduit are provided with the sealing washer, the utility model relates to a pipe fitting technical field this outer screwed joint of anti-drop type for kind of connecting tube has reached anti-drop, and sealed effect avoids droing, has improved performance and work efficiency, has avoided the seepage, has reduced economic loss, has.

Description

anti-drop type external thread joint for connecting pipe

Technical Field

The utility model relates to a pipe fitting art field specifically is kinds of connecting tube connect with outer silk of anti-drop type.

Background

The pipeline is a device which is connected by a pipe, a pipe connector, a valve and the like and used for conveying gas, liquid or fluid with solid particles, the pipeline has unique characteristics, is widely applied to multiple industries and multiple fields, the pipeline has very wide application range and is mainly used in water supply, drainage, heat supply, gas supply, long-distance petroleum and natural gas conveying, agricultural irrigation, hydraulic engineering and various industrial devices, is pushed vigorously at present to be a safer and more environment-friendly plastic material, and the plastic pipeline is connected by a metal material.

SUMMERY OF THE UTILITY MODEL

() problems to be solved

The not enough to prior art, the utility model provides an kinds of anti-drop type outer silk joint for connecting tube, it is too simple to have solved the structure, it is inconvenient to use, only lean on adhesive force and frictional force to connect, because plastics produce the deformation volume because of expend with heat and contract with cold and be greater than the alloy material far away, the thermal expansion coefficient difference is big, the condition of droing appears easily, direct influence outer silk straight joint's normal use, performance has been reduced, and sealed effect is poor, the condition of seepage appears easily, cause economic loss, increase the problem of maintenance volume.

(II) technical scheme

In order to realize the purpose, the utility model discloses a kinds of connecting tube are with anti-drop type external thread connector, including the pipe connection head, the end fixedly connected with connecting sleeve of pipe connection head, connecting sleeve's inner wall fixedly connected with barb, the barb slope sets up, the inside of connecting sleeve and the position that is located the barb are provided with plastic conduit, the inside end that just is located connecting sleeve between the corresponding both sides of pipe connection head and plastic conduit is provided with seal gasket, connecting sleeve's surperficial end threaded connection has lock nut, the connecting sleeve keeps away from ends of pipe connection head and the inside cooperation that is located lock nut and is connected with conical surface elasticity snap ring, the inner wall of conical surface elasticity snap ring and the surface that is located plastic conduit are provided with the sealing washer, external connection thread has been seted up on the surface of pipe connection head.

Preferably, the surface of the locking nut is provided with an anti-slip layer, a perforation is formed in the side of the surface of the locking nut, and a guide inclined plane is formed in the inner wall of the connecting sleeve and located at the position of the sealing gasket.

Preferably, the barbs are evenly distributed on the inner wall of the connecting sleeve.

Preferably, the end of the inner wall of the connecting sleeve is provided with a sealing inclined surface matched with the surface of the conical elastic snap ring.

Preferably, the inner wall central position of conical surface snap ring sets up the circular arc fixed slot with sealing washer looks adaptation, the material of sealing washer and the material of seal gasket all set up to high temperature resistant corrosion-resistant material.

Preferably, the surface of the connecting sleeve is provided with an external thread matched with the locking nut.

(III) advantageous effects

The utility model provides an kind connecting tube connects with outer screwed joint of anti-drop type possesses following beneficial effect:

(1) the utility model discloses a connecting pipe, connecting pipe is with anti-drop type external thread joint, end fixedly connected with connecting sleeve through the pipe connection head, connecting sleeve's inner wall fixedly connected with barb, barb evenly distributed is at connecting sleeve's inner wall, the barb slope sets up, connecting sleeve's inside and the position that is located the barb are provided with the plastic conduit, the connection external screw thread has been seted up on the surface of pipe connection head, anti-drop's effect has been reached, and is rational in infrastructure simple, high durability and convenient use, effectively avoided droing, performance and work efficiency have been improved greatly.

(2) The utility model discloses a plastic pipeline, including connecting pipe, the connecting pipe is with anti-drop type external thread joint, the inside end that just is located connecting sleeve through between the corresponding both sides of pipe connection head and plastic pipeline is provided with seal gasket, connecting sleeve's surperficial end threaded connection has lock nut, connecting sleeve keeps away from the end of pipe connection head and is located lock nut's inside cooperation and is connected with conical surface snap ring, conical surface snap ring's inner wall and the surface that is located plastic pipeline are provided with the sealing washer, sealed effect has been reached, and is rational in infrastructure simple, high durability and convenient use, sealed effectual, the seepage has effectively been avoided, economic loss is reduced.

Drawings

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

FIG. 2 is a right side view of the lock nut;

fig. 3 is a partially enlarged view of a portion a in fig. 1.

In the figure: 1 pipe connection head, 2 connecting sleeve, 3 barb, 4 plastic conduit, 5 seal gasket, 6 lock nut, 7 conical surface snap ring, 8 sealing washers, 9 external screw thread of connecting, 10 skid resistant course, 11 perforation, 12 direction inclined planes.

Detailed Description

The technical solution 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 , but not all embodiments.

Please refer to fig. 1-3, the utility model provides technical schemes, anti-drop type external thread joint for connecting tube, including tube coupling head 1, end fixedly connected with connecting sleeve 2 of tube coupling head 1, the inner wall fixedly connected with barb 3 of connecting sleeve 2, barb 3 has the anti-drop function, barb 3 evenly distributed is at the inner wall of connecting sleeve 2, barb 3 inclines to set up, the inside of connecting sleeve 2 and the position that is located barb 3 are provided with plastic conduit 4, the inside end that just is located connecting sleeve 2 between tube coupling head 1 and the corresponding both sides of plastic conduit 4 is provided with seal gasket 5, surface end threaded connection of connecting sleeve 2 has lock nut 6, the surface of connecting sleeve 2 is offered the external screw thread with lock nut 6 looks adaptation conical surface, the connection sleeve 2 keeps away from end of tube coupling head 1 and is located lock nut 6's inside cooperation and is connected with elastic snap ring 7, the inner wall 5 end of connecting sleeve 2 is offered the sealing with the surface looks adaptation of conical surface with conical surface of elastic snap ring 7, improve the leakproofness, the inner wall of elastic snap ring 7 and the inner wall surface of connecting sleeve 2 is provided with the sealing ring 12 that the sealing ring material is provided with the anti-corrosion-resistant sealing ring seal gasket is provided with the sealing ring seal ring 12 of the inner wall of the sealing ring 12 material that the sealing ring is provided with the sealing ring of the anti-slip-resistant pipe coupling head 12, the sealing ring is provided with the sealing ring of the sealing ring 12.

During the use, at first with lock nut 6, conical surface snap ring 7 and sealing washer 8 overlap in proper order at the surperficial end of plastic conduit 4, cooperate conical surface snap ring 7 and sealing washer 8 again, place seal gasket 5 along direction inclined plane 12 this moment, and with the end contact of pipe connection head 1, promote plastic conduit 4 along the direction of barb 3 this moment, when end of plastic conduit 4 and the surface of seal gasket 5 in proper order in close contact with, stop promoting, barb 3 has anti-drop function this moment, cooperate lock nut 6 and adapter sleeve 2 this moment, and tighten lock nut 6, sealing washer 8 closely laminates with the surface of plastic conduit 4 under the effect of snap ring 7 pressure this moment, have sealing effect, avoid plastic conduit 4 not hard up simultaneously, advance step and avoid droing.

It should be noted that, in this document, relational terms such as , second and the like are only used to distinguish entities or operations from entities or operations, but not necessarily requires or implies any such actual relationship or order between the entities or operations.

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

The utility model provides an kind of connecting tube connects with outer silk of anti-drop type, including pipe connection head (1), its characterized in that the end fixedly connected with connecting sleeve (2) of pipe connection head (1), the inner wall fixedly connected with barb (3) of connecting sleeve (2), barb (3) slope sets up, the inside of connecting sleeve (2) and the position that is located barb (3) are provided with plastic conduit (4), just the inside end that is located connecting sleeve (2) between the corresponding both sides of pipe connection head (1) and plastic conduit (4) is provided with seal gasket (5), the surperficial end threaded connection of connecting sleeve (2) has lock nut (6), the inside cooperation that end that connecting sleeve (2) kept away from the conical surface of pipe connection head (1) just is located lock nut (6) is connected with conical surface snap ring (7), the inner wall of snap ring (7) and the surface that is located plastic conduit (4) are provided with sealing washer (8), connection external screw thread (9) have been seted up on the surface of pipe connection head (1).
2. The anti-drop external screw connector for connecting tubes according to claim 1, wherein the surface of the locking nut (6) is provided with an anti-slip layer (10), a through hole (11) is formed on the side of the surface of the locking nut (6), and a guide inclined surface (12) is formed on the inner wall of the connecting sleeve (2) and at the position of the sealing gasket (5).
3. The kinds of anti-drop type external thread connector for connecting pipeline according to claim 1, wherein the barbs (3) are uniformly distributed on the inner wall of the connecting sleeve (2).
4. The kinds of anti-drop type external thread connector for connecting tubes, according to claim 1, is characterized in that a sealing bevel adapted to the surface of the conical snap ring (7) is provided at the end of the inner wall of the connecting sleeve (2).
5. The anti-drop type external thread connector for connecting tubes, according to claim 1, is characterized in that the center of the inner wall of the conical snap ring (7) is provided with an arc fixing groove matched with the sealing ring (8), and the sealing ring (8) and the sealing gasket (5) are both made of high temperature resistant and corrosion resistant materials.
6. The kinds of anti-drop type external thread connector for connecting tubes according to claim 1, wherein the surface of the connecting sleeve (2) is provided with an external thread adapted to the lock nut (6).