CN217328617U - One-way internal thread elbow - Google Patents

Abstract

The utility model belongs to the technical field of the pipe connector technique and specifically relates to a one-way internal thread elbow is related to, including hollow inserts main part, the one end of inserts main part is fixed with the extension pipe, and the extension pipe gets inside to be fixed with check case. This application has the effect that improves the staff to water supply system installation effectiveness.

Description

One-way internal thread elbow

Technical Field

The application relates to the technical field of pipe connectors, in particular to a one-way internal thread elbow.

Background

Various pipelines are needed by a water supply system, various pipe fittings are generally used at the connecting positions of the pipelines, a water outlet of a water heater, a water tap and the like, the pipe fittings comprise plastic elbows and inserts, one ends of the inserts are connected with the plastic elbows through injection molding, the inserts are of hollow structures, and internal threads convenient for assembling the pipe fittings are formed on the inner walls of the inserts.

In the related art, when assembling the water supply system, a worker needs to install a check valve between the pipe members to block the medium in the pipe from flowing backwards. Staff need be at the junction of pipe fitting and check valve winding with the unsintered area in order to guarantee water supply system's leakproofness.

In view of the above-mentioned related art problems, the inventor thinks that when the staff assembles the water supply system, the pipe fitting and the check valve need to be installed, and the installation work is cumbersome and takes a lot of time.

SUMMERY OF THE UTILITY MODEL

In order to improve staff to water supply system's installation effectiveness, this application provides a one-way internal thread elbow.

The application provides a one-way internal thread elbow adopts following technical scheme:

the one-way internal thread elbow comprises a hollow insert main body, wherein an extension pipe is fixed at one end of the insert main body, and a check valve core is fixed inside the extension pipe.

Through adopting above-mentioned technical scheme, be equipped with the extension pipe that is used for installing check case in the one end of inserts main part for inserts main part and check case an organic whole are fixed in the plastics elbow, and when the staff need install water supply system, need not to install the check valve alone, can save installation time, have improved the installation effectiveness of staff to water supply system.

Preferably, the outer wall of the check valve core abuts against the inner wall of the extension pipe, a positioning ring is arranged at one end, far away from the insert body, of the extension pipe, and the check valve core abuts against one side, close to the extension pipe, of the positioning ring.

By adopting the technical scheme, the positioning ring is used for determining the installation position of the check valve core in the extension pipe, the check valve core is fixed in the extension pipe in an interference fit mode, and the installation mode is simple and reliable.

Preferably, the insert body forms a connecting thread away from an inner wall of the extension tube.

By adopting the technical scheme, when other pipe fittings are installed on the insert main body, the connecting threads are convenient for the pipe fitting to be in threaded connection in the insert main body.

Preferably, the insert body is positioned on the inner wall of one end, far away from the extension pipe, of the connecting thread to form a chamfer.

Through adopting above-mentioned technical scheme, the chamfer makes the pipe fitting easier penetrate the connecting thread hole of inserts main part, has reduced the installation degree of difficulty, has improved staff to water supply system's installation effectiveness.

Preferably, the extension pipe is close to the internal perisporium of check valve core has seted up the sealed annular, the embedded sealing washer that has of sealed annular, the sealing washer support tightly in check valve core.

Through adopting above-mentioned technical scheme, the sealing washer can improve the leakproofness that the non return case is fixed in the extension pipe, reduces the possibility that infiltration appears in clearance department between extension pipe and the non return case.

Preferably, a plurality of anti-drop rings embedded in the inner wall of the plastic elbow are fixed on the outer peripheral wall of the insert main body.

Through adopting above-mentioned technical scheme, the anticreep ring can reduce the possibility that the inserts main part breaks away from the plastics elbow.

Preferably, the outer peripheral wall of the slip-off preventing ring is formed with a smooth rounded portion.

By adopting the technical scheme, when the anti-drop ring and the plastic elbow are subjected to thermal deformation, the contact part of the anti-drop ring and the plastic elbow is easy to damage, and the round corner part can reduce the possibility of damage of the contact part of the anti-drop ring and the plastic elbow.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the extension pipe is fixed at the end part of the insert main body, the check valve core is installed inside the extension pipe, so that the insert main body and the check valve core are integrally molded on the plastic elbow, when a worker needs to install a water supply system, the check valve does not need to be installed independently, the installation time can be saved, and the installation efficiency of the worker on the water supply system is improved.

2. Through installing the sealing washer in the extension tube, improved the leakproofness of check case in the extension tube, reduced the possibility that the infiltration appears in clearance department between extension tube and the check case.

Drawings

FIG. 1 is a general schematic view showing an appearance structure according to the present embodiment;

fig. 2 is a sectional view showing the overall structure of the present embodiment;

fig. 3 is a sectional view showing the entire structure of the check valve body according to the present embodiment.

Reference numerals: 1. an insert body; 2. an extension tube; 3. a check valve core; 31. a housing; 32. a water retaining ring; 33. fixing a column; 34. a spring member; 35. a water blocking column; 4. the anti-drop ring; 5. a rounded corner portion; 6. a positioning ring; 7. chamfering; 8. sealing the ring groove; 9. a seal ring; 10. connecting threads; 11. and (4) water leakage holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a one-way internal thread elbow.

Referring to fig. 1 and 2, the unidirectional internal thread elbow comprises an insert body 1 of which the outer wall is injection molded with a plastic elbow, wherein the insert body 1 is of a cylindrical pipe structure with a hollow interior. One end integrated into one piece of inserts main part 1 has extension pipe 2, and extension pipe 2 is coaxial with inserts main part 1, and extension pipe 2 and inserts main part 1 are the higher metalwork of structural strength. The inside of extension pipe 2 is installed columnar check case 3, and the interference fit is formed with the inner wall of extension pipe 2 to check case 3. Insert main part 1 and check case 3 an organic whole mould plastics in the inside of plastics elbow, when staff's installation water supply system, need not to install the check valve alone, can save installation time, has improved staff to water supply system's installation effectiveness.

Referring to fig. 3, in the present embodiment, the check valve core 3 is a one-way check valve, the check valve core 3 includes a cylindrical housing 31, the inside of the housing 31 is hollow, a water retaining ring 32 is formed on an inner wall of one end of the housing 31, a fixing column 33 with a convex cross-section is integrally connected to one end of the inside of the housing 31 far away from the water retaining ring 32, and a water leakage hole 11 for allowing water to enter a cavity inside the housing 31 is formed between the fixing column 33 and the housing 31. One end of the fixing column 33 close to the water retaining ring 32 is sleeved with a spring piece 34 in a compressed state. The end of the spring part 34 far away from the fixing column 33 is provided with a water blocking column 35, the section of the water blocking column 35 is also in a convex shape, the end with the larger section of the water blocking column 35 is close to one side of the water blocking ring 32, and the diameter of the position with the larger section of the water blocking column 35 is slightly smaller than the inner diameter of the shell 31. One end of the spring element 34 far away from the fixing column 33 is sleeved on the water blocking column 35. The spring element 34 makes the end with larger section of the water blocking column 35 abut against the water blocking ring 32 to realize the sealing of the check valve core 3. The spring force exerted by the spring element 34 is the opening pressure of the check valve cartridge 3.

When water flow enters the shell 31 from one end of the check valve core 3 close to the fixed column 33, water pressure acts on the water blocking column 35, so that the water blocking column 35 is tightly propped against the water blocking ring 32, and the water flow cannot pass through the check valve core 3; when water flow enters the shell 31 from one end of the check valve core 3, which is opened into the water retaining ring 32, water pressure acts on one side of the water retaining column 35, which is far away from the spring element 34, and when the water pressure is higher than opening pressure, the water retaining column 35 moves far away from the water retaining ring 32, and because the water retaining ring 32 and the inner wall of the shell 31 have a gap, the water flow can enter the shell 31 along the gap and is discharged out of the shell 31 through the water leakage port; the above is the one-way water passing principle of the check valve core 3.

Referring to fig. 1 and 2, a plurality of anti-slip rings 4 are coaxially fixed to the outer circumferential wall of the insert body 1, and the anti-slip rings 4 are integrally formed with the insert body 1. The anti-slip rings 4 are uniformly arranged on the outer peripheral wall of the insert body 1, and the outer peripheral wall of the anti-slip ring 4 forms a smooth fillet part 5. The plastic elbow is injected to the periphery wall that is located anticreep ring 4 in inserts main part 1, and anticreep ring 4 makes plastic elbow and inserts main part 1 be difficult for taking place to break away from. When the water liquid in the pipeline takes place temperature variation, the thermal deformation takes place easily in the position department that the elbow of moulding plastics is close to anticreep ring 4, when anticreep ring 4 is comparatively sharp-pointed, causes the damage to the elbow of moulding plastics easily, and fillet 5 has reduced the possibility that the contact department of anticreep ring 4 and plastics elbow takes place the damage.

One end integrated into one piece that inserts main part 1 was kept away from to extension pipe 2 has holding ring 6, and the internal diameter of holding ring 6 is less than the internal diameter of extension pipe 2, and check valve core 3 butt is close to the one end of extension pipe 2 in holding ring 6, and holding ring 6 has reduced the possibility that check valve core 3 breaks away from in the extension pipe 2.

The internal perisporium of extension pipe 2 has seted up sealed annular 8, and the joint has rubber's sealing washer 9 in the sealed annular 8, and the inner circle of sealing washer 9 supports tightly in check case 3's periphery wall, has improved the leakproofness of check case 3 with extension pipe 2, has reduced the possibility that the infiltration appears in the clearance department between extension pipe 2 and the check case 3. The sealing ring 9 is tightly propped against the check valve core 3, so that the stability of the check valve core 3 fixed in the extension pipe 2 is increased.

The inner wall that extension pipe 2 was kept away from to inserts main part 1 forms connecting thread 10, when needs were installed all the other pipe fittings and inserts main part 1, wears to locate connecting thread 10 with the double-screw bolt of installation pipe fitting and carries out threaded connection, when installing pipe fitting and inserts main part 1, twines the thread seal area at the junction of pipe fitting and inserts main part 1 to this leakproofness that improves pipe fitting and inserts main part 1 installation.

In order to facilitate easier penetration of the pipe into the connecting thread 10, the insert body 1 is formed with a chamfer 7 that widens toward the end of the insert body 1 near the end of the connecting thread 10. The chamfer 7 provides a guiding effect for the penetration of the pipe element into the insert body 1, and the chamfer 7 reduces the possibility of wear of the insert body 1 near its port.

The implementation principle of the one-way internal thread elbow of the embodiment of the application is as follows: when the staff installs water supply system, wear to locate connecting thread 10 and carry out threaded connection with the installation pipe fitting, because the internally mounted of extension pipe 2 has non return case 3 for the staff need not to install the check valve alone, can save the time of installing the check valve alone, has improved the installation effectiveness of staff to water supply system.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (7)

1. The utility model provides a one-way internal thread elbow, includes hollow inserts main part (1), its characterized in that: an extension pipe (2) is fixed at one end of the insert body (1), and a check valve core (3) is fixed inside the extension pipe (2).

2. The unidirectional internal thread elbow according to claim 1, wherein: the outer wall of the check valve core (3) abuts against the inner wall of the extension pipe (2), a positioning ring (6) is fixed at one end, far away from the insert body (1), of the extension pipe (2), and the check valve core (3) abuts against one side, close to the extension pipe (2), of the positioning ring (6).

3. The unidirectional internal thread elbow according to claim 2, wherein: the insert body (1) is far away from the inner wall of the extension pipe (2) to form a connecting thread (10).

4. A unidirectional internal thread elbow according to claim 3, wherein: the insert main body (1) is located on the inner wall of one end, far away from the extension pipe (2), of the connecting thread (10) to form a chamfer (7).

5. A unidirectional internal thread elbow according to claim 2, wherein: extension pipe (2) are close to sealed annular (8) have been seted up to the internal perisporium of check case (3), sealed annular (8) are embedded to have sealing washer (9), sealing washer (9) support tightly in check case (3).

6. The unidirectional internal thread elbow according to claim 1, wherein: the outer peripheral wall of the insert main body (1) is fixed with a plurality of anti-drop rings (4) embedded into the inner wall of the plastic elbow.

7. The unidirectional inner wire elbow of claim 6, wherein: the outer peripheral wall of the anti-falling ring (4) forms a smooth fillet part (5).

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