CN210462105U

CN210462105U - Plastic hose quick-operation joint and pump

Info

Publication number: CN210462105U
Application number: CN201921624116.7U
Authority: CN
Inventors: 李晴
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-05-05
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a plastic hose quick connector and a pump, wherein the plastic hose quick connector comprises a connecting pipe and a screwing sleeve, a first end of the connecting pipe is provided with a first internal thread and an external thread, and an external convex ring is arranged on the outer wall of the connecting pipe between a second end of the connecting pipe and the external thread; the first end of the screwing sleeve is provided with a second internal thread matched and connected with the external thread in a threaded mode, an internal convex ring matched with the external convex ring to clamp the hose is arranged between the second end of the screwing sleeve and the second internal thread, and the maximum diameters of the external convex ring and the internal convex ring are smaller than the diameter of the external thread top tooth. When the plastic hose quick connector is used, the quick connector is in threaded connection with a pump or a spray gun, then the first end of the screwing sleeve is sleeved into the connecting pipe from the second end of the connecting pipe, then the plastic hose is inserted into the outer thread close to the connecting pipe from the gap between the connecting pipe and the screwing sleeve, and finally the screwing sleeve is rotated to enable the outer convex ring and the inner convex ring to be matched and tightly clamp the plastic hose.

Description

Plastic hose quick-operation joint and pump

Technical Field

The utility model relates to a coupling technical field, concretely relates to plastic hose quick-operation joint.

Background

The plastic hose is an important part in industry, and in order to realize the quick connection of the plastic hose with a pipeline, a valve, a pump and a spray gun, the two ends of the plastic hose are provided with quick connectors.

Common plastic hose quick-operation joint usually is the clamp among the prior art, uses the clamp to put the hose card on pump or spray gun, and sealed not good enough condition appears easily in the fixed hose of single clamp card, has appeared the hose and has come off even for a long time.

In view of this, the utility model is especially provided.

Disclosure of Invention

The utility model aims at providing a plastic hose quick-operation joint to the above-mentioned problem that exists among the prior art to realize that plastic hose installs fast on pump or spray gun.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a quick joint of a plastic hose comprises a connecting pipe and a screwing sleeve; the inner wall of the first end of the connecting pipe is provided with a first internal thread for connecting a to-be-fixed piece, the outer wall of the first end of the connecting pipe is provided with an external thread, and an external convex ring is arranged on the outer wall of the connecting pipe between the second end of the connecting pipe and the external thread; the inner wall of the first end of the screwing sleeve is provided with a second internal thread matched and screwed with the external thread, an internal convex ring matched with the external convex ring to clamp the hose is arranged between the second end of the screwing sleeve and the second internal thread, and the maximum diameters of the external convex ring and the internal convex ring are smaller than the diameter of the external thread top tooth.

The utility model provides a pair of plastic hose quick-operation joint, during the use, at first with quick-operation joint and pump or spray gun threaded connection, then hold the connecting pipe from the second of connecting pipe with screwing the first end of cover, insert the external screw thread to being close the connecting pipe with plastic hose from the connecting pipe and the clearance of screwing between the cover, at last rotatory screwing the cover make outer bulge loop and inner bulge loop cooperate the tight plastic hose of clamp can, above-mentioned plastic hose quick-operation joint simple structure, high durability and convenient use, the leakproofness is good.

In order to better achieve the technical scheme, preferably, a part of the outer convex ring, which is far away from the external thread, to the maximum diameter of the outer convex ring is of a conical structure with gradually increasing diameter, and a part of the outer convex ring, which is far away from the external thread, to the maximum diameter of the outer convex ring is of a conical structure with gradually decreasing diameter.

Preferably, the outer wall of the end part of the first end of the connecting pipe is provided with a first limiting ring, and the outer wall of the end part of the first end of the screwing sleeve is provided with a second limiting ring matched with the first limiting ring.

Preferably, a plurality of axial assisting convex ribs are uniformly arranged on the circumferential direction of the outer wall of the screwing sleeve.

Preferably, the second end of the screwing sleeve is connected with an external connecting pipe with the pipe diameter different from that of the connecting pipe.

Preferably, the mounting hole has been seted up in the contact surface axial with the second spacing ring to first spacing ring, install the scalable locking piece that stretches out the mounting hole in the mounting hole, first spacing ring outer wall is seted up and is just followed the bar hole of second spacing ring axial extension with the mounting hole intercommunication, the bar is downthehole to be equipped with and links to each other with the locking piece and the gag lever post that the outer end stretches out the bar hole, the second spacing ring is seted up a plurality of locking holes that hold the locking piece outer end in the contact surface axial with first spacing ring.

Preferably, the locking piece includes compression spring, spliced pole and lock ball, compression spring one end is connected at the hole bottom of mounting hole, and the other end is connected with spliced pole one end, the other end and the lock ball that can locally stretch out the mounting hole of spliced pole are connected, the gag lever post is connected in the outer wall of spliced pole.

Preferably, the end part of the limiting rod matched with the locking part is provided with a stud, and the outer wall of the connecting column is radially provided with a screw hole matched with the stud.

The utility model also provides a pump, including the pump main part, an above-mentioned arbitrary plastic hose quick-operation joint is installed to the play water end of pump main part.

Preferably, the inner and outer surfaces of the pump body are rugged.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below.

FIG. 1 is a schematic view of a quick coupling for plastic hoses as provided in example 1;

FIG. 2 is a front view of the quick connector of the plastic hose of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an optimized view of the tightening sleeve in the quick coupling of the plastic hose provided in example 2;

FIG. 5 is an optimized view of the connection pipe in the quick connector of the plastic hose provided in example 3;

FIG. 6 is a schematic view of a quick coupling for plastic hoses as provided in example 4;

FIG. 7 is an enlarged view of FIG. 6 at B;

FIG. 8 is a schematic view of a pump provided in example 5;

in the drawings, the reference numbers are as follows:

1. a connecting pipe; 11. a first internal thread; 12. an external thread; 13. an outer convex ring; 14. a first limit ring; 141. mounting holes; 142. a strip-shaped hole; 15. a gasket;

2. screwing the sleeve; 21. a second internal thread; 22. an inner collar; 23. an axial power-assisted rib; 24. a second stop collar; 241. a lock position hole; 25. an external connection pipe;

31. a stud; 311. a stud; 32. a compression spring; 33. connecting columns; 34. and a locking ball.

4. A pump body;

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Example 1:

referring to fig. 1 to 3, the present embodiment provides a quick coupling for plastic hoses, which includes a connecting pipe 1 and a screwing sleeve 2, wherein the inner wall of the first end of the connecting pipe 1 has a first internal thread 11, the outer wall of the first end of the connecting pipe 1 has an external thread 12, and an external convex ring 13 is disposed on the outer wall of the connecting pipe 1 between the second end of the connecting pipe 1 and the external thread 12.

The inner wall of the first end of the screwing sleeve 2 is provided with a second internal thread 21 matched and screwed with the external thread 12, an internal convex ring 22 matched with the external convex ring 13 to clamp the hose is arranged between the second end of the screwing sleeve 2 and the second internal thread 21, and the maximum diameters of the external convex ring 13 and the internal convex ring 22 are smaller than the diameter of the top teeth of the external thread 12.

When the plastic hose quick connector is used, the quick connector is connected with a pump or a spray gun in a threaded fit mode, then the first end of the screwing sleeve 2 is sleeved into the connecting pipe 1 from the second end of the connecting pipe 1, then the plastic hose is inserted into the outer thread 12 close to the connecting pipe 1 from the position between the connecting pipe 1 and the screwing sleeve 2, and finally the screwing sleeve 2 is rotated to enable the outer convex ring 13 and the inner convex ring 22 to be matched and tightly clamp the plastic hose.

In order to further increase the contact area between the external convex ring 13 and the internal convex ring 22, in this embodiment, the end of the external convex ring 13 away from the external thread 12 to the maximum diameter of the external convex ring 13 is in a conical structure with gradually increasing diameter, and the end of the internal convex ring 22 close to the second internal thread 21 to the maximum diameter of the internal convex ring 22 is in a conical structure with gradually increasing diameter.

Adopt the outer bulge loop 13 of conical structure and inner bulge loop 22 on the one hand can increase the area of contact of outer bulge loop 13 with inner bulge loop 22, and then increase plastic hose's fastening dynamics, on the other hand can make plastic hose's fixed part be the arc structure, helps reducing the influence of buckling to hose fixed part intensity.

In this embodiment, a plurality of axial assisting protruding ridges 23 are uniformly arranged on the outer wall of the screwing sleeve 2 in the circumferential direction, and the assisting protruding ridges 23 are arranged to facilitate a person to rapidly rotate the screwing sleeve 2.

The plastic hose quick-operation joint that this embodiment provided compares with clamp fixed pump or spray gun and hose among the prior art, and its simple structure, convenient to use, the leakproofness is strong.

Example 2:

referring to fig. 4, the present embodiment provides a quick coupler for a plastic hose, which is similar to embodiment 1 except that:

the second end of the screwing sleeve 2 is connected with an external connecting pipe 25 with the pipe diameter different from that of the connecting pipe 1, and the plastic hose quick connector can be used as a reducing connector by arranging the external connecting pipe 25.

Example 3:

referring to fig. 5, this embodiment is further optimized based on embodiment 2, and the optimization is as follows:

the matching surface of the outer convex ring 13 and the inner convex ring 22 is provided with a concave ring, and a sealing gasket 15 extending out of the surface of the concave ring is arranged in the concave ring. Preferably, sealed pad 15 is the silica gel pad, through setting up the sealed effect of silica gel pad multiplicable quick-operation joint on the one hand, on the other hand helps reducing the destruction to hose nipple when screwing up cover 2 and rotating.

Example 4:

referring to fig. 6 and 7, the present embodiment is further optimized based on embodiment 1 or 3, wherein:

mounting hole 141 has been seted up in the axial direction of the contact surface with second spacing ring 24 to first spacing ring 14, the built-in locking piece that is equipped with scalable extension mounting hole 141 of mounting hole 141, bar hole 142 that just follows 24 axial extensions of second spacing ring with the mounting hole 141 intercommunication is seted up to first spacing ring 14 outer wall, the built-in gag lever post 31 that is equipped with and links to each other with the locking piece and the outer end stretches out bar hole 142 that is equipped with of bar hole 142, a plurality of locking holes 241 that hold the locking piece outer end are seted up to second spacing ring 24 on the axial with the contact surface of first spacing ring 14.

Preferably, in this implementation, the locking member includes a compression spring 32, a connection column 33 and a locking ball 34, one end of the compression spring 32 is connected to the bottom of the mounting hole 141, the other end of the compression spring is connected to one end of the connection column 33, the other end of the connection column 33 is connected to the locking ball 34 which can partially extend out of the mounting hole 141, and the limiting rod 31 is connected to the outer wall of the connection column 33.

When needs fixed hose, promote gag lever post 31 to the first end of connecting pipe 1, make the ball 34 of being locked stretch into the mounting hole 141, compression spring 32 is in compression state, after the cover 2 of screwing is rotatory to the end, loosen gag lever post 31, compression spring 32 resets and promotes spliced pole 33 and makes ball 34 of being locked lock in the hole 241 of being locked to this can avoid screwing up and take place rotatory not hard up after cover 2 receives the vibration, this hose quick-operation joint is to the hose of frequent removal, the result of use preferred.

In order to facilitate the connection of the limiting rod 31 and the connecting column 33, the end part of the limiting rod 31 matched with the locking part is provided with a stud 311, the outer wall of the connecting column 33 is radially provided with a screw hole matched with the stud 311, and the limiting rod 31 can be quickly connected with the locking part by matching the stud 311 with the screw hole.

Example 5:

as shown in fig. 7, a pump comprises a pump body 4, and a quick connector of the plastic hose of any one of embodiments 1 to 4 is installed at the water outlet end of the pump body 4.

In the present embodiment, the inner and outer surfaces of the pump body 4 are uneven, and the uneven inner and outer surfaces contribute to the improvement of the pump heat radiation performance.

Example 6: a spray gun, the water inlet end and the water outlet end of the spray gun are both provided with the quick connector of the plastic hose in any one of the embodiments 1 to 4.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A quick connector for plastic hoses is characterized in that: comprises a connecting pipe (1) and a screwing sleeve (2);

the inner wall of the first end of the connecting pipe (1) is provided with a first internal thread (11) for connecting a to-be-fixed part, the outer wall of the first end of the connecting pipe (1) is provided with an external thread (12), and an external convex ring (13) is arranged on the outer wall of the connecting pipe (1) between the second end of the connecting pipe (1) and the external thread (12);

the inner wall of the first end of the screwing sleeve (2) is provided with a second internal thread (21) which is matched and screwed with the external thread (12), an internal convex ring (22) which is matched and clamped with the external convex ring (13) to clamp the hose is arranged between the second end of the screwing sleeve (2) and the second internal thread (21), and the maximum diameters of the external convex ring (13) and the internal convex ring (22) are smaller than the diameter of the top tooth of the external thread (12).

2. The plastic hose quick connector of claim 1, wherein: the outer convex ring (13) is of a conical structure with gradually increasing diameter from one end far away from the external thread (12) to the maximum diameter of the outer convex ring (13), and the inner convex ring (22) is of a conical structure with gradually increasing diameter from one end close to the second internal thread (21) to the maximum diameter of the inner convex ring (22).

3. The plastic hose quick connector of claim 1, wherein: and a plurality of axial power-assisted convex ribs (23) are uniformly arranged on the outer wall of the screwing sleeve (2) in the circumferential direction.

4. The plastic hose quick connector of claim 1, wherein: the outer wall of the end part of the first end of the connecting pipe (1) is provided with a first limiting ring (14), and the outer wall of the end part of the first end of the screwing sleeve (2) is provided with a second limiting ring (24) matched with the first limiting ring (14).

5. The plastic hose quick connector of claim 1, wherein: the second end of the screwing sleeve (2) is connected with an external connecting pipe (25) with the pipe diameter different from that of the connecting pipe (1).

6. The plastic hose quick connector of claim 4, wherein: mounting hole (141) have been seted up in first spacing ring (14) on the contact surface axial with second spacing ring (24), the built-in locking piece that is equipped with scalable extension mounting hole (141) in mounting hole (141), bar hole (142) that just follows second spacing ring (24) axial extension with mounting hole (141) intercommunication are seted up to first spacing ring (14) outer wall, bar hole (142) are built-in to be equipped with and link to each other and outer end stretches out gag lever post (31) of bar hole (142) with the locking piece, a plurality of locking hole (241) that hold the locking piece outer end are seted up in the contact surface axial with first spacing ring (14) in second spacing ring (24).

7. The plastic hose quick connector of claim 6, wherein: the locking piece includes compression spring (32), spliced pole (33) and lock ball (34), compression spring (32) one end is connected in the hole bottom of mounting hole (141), and the other end is connected with spliced pole (33) one end, the other end of spliced pole (33) is connected with lock ball (34) that can stretch out mounting hole (141) locally, gag lever post (31) are connected in the outer wall of spliced pole (33).

8. The plastic hose quick connector of claim 7, wherein: the end part of the limiting rod (31) matched with the locking part is provided with a stud (311), and the outer wall of the connecting column (33) is radially provided with a screw hole matched with the stud (311).

9. A pump, characterized by: comprises a pump body, wherein the water outlet end of the pump body is provided with the quick connector of the plastic hose as claimed in any one of claims 1 to 8.

10. A pump according to claim 9, wherein: the inner and outer surfaces of the pump body are rugged.