CN211951756U

CN211951756U - Loose joint assembly

Info

Publication number: CN211951756U
Application number: CN202020540197.9U
Authority: CN
Inventors: 金耿
Original assignee: Wenling Hengfa Aircondition Components Co ltd
Current assignee: Wenling Hengfa Aircondition Components Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-11-17
Anticipated expiration: 2030-04-13

Abstract

The utility model provides a loose joint subassembly belongs to mechanical technical field. It has solved the current not good problem of joint leakproofness. The loose joint component comprises a left pipe and a right pipe which are coaxially arranged, an annular sealing gasket is clamped between the left pipe and the right pipe, a pressure cap is sleeved outside the left end of the right pipe and is in threaded connection with the right pipe, the right end of the left pipe is positioned in the pressure cap, an annular retaining shoulder is formed on the outer side wall of the right end of the left pipe, an annular pressure shoulder is formed on the inner wall of the left end of the pressure cap, a pressure ring is arranged between the pressure cap and the left pipe and is sleeved outside the left pipe, a positioning ring is integrally formed on the outer side wall of the left pipe, and two end faces of the positioning ring are respectively in close contact with the annular pressure shoulder; the inner side wall of the pressure ring is provided with a first conical surface with the diameter gradually reduced from left to right, the outer side wall of the left tube is provided with a second conical surface matched with the first conical surface, and the first conical surface and the second conical surface are in close contact to form sealing. This loose joint subassembly leakproofness is good.

Description

Loose joint assembly

Technical Field

The utility model belongs to the technical field of machinery, a connect, especially a loose joint subassembly is related to.

Background

The loose joint is called union or union, and is a common pipeline connecting piece which can be conveniently assembled and disassembled.

The existing loose joint mainly comprises a pressing cap, two pipe fittings connected through the pressing cap and an annular sealing gasket used for sealing the connection of the two pipe fittings. This joint has the following problems: 1. when the joint is used in a high-pressure environment, the effect is not ideal and water leakage is easy to occur only by depending on the sealing of the annular sealing gasket; 2. the annular sealing gasket is easy to age under long-term stress, so that the joint is easy to leak water.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having above-mentioned problem to current technique, provided a loose joint subassembly, the technical problem of solution is how to improve sealing performance.

The purpose of the utility model can be realized by the following technical proposal: a loose joint component comprises a left pipe and a right pipe which are coaxially arranged, an annular sealing gasket is clamped between the left pipe and the right pipe, a pressing cap is sleeved outside the left end of the right pipe and is in threaded connection with the right pipe, the right end of the left pipe is positioned in the pressing cap, an annular retaining shoulder is formed on the outer side wall of the right end of the left pipe, and an annular pressing shoulder is formed on the inner wall of the left end of the pressing cap; the inner side wall of the pressing ring is provided with a conical surface I, the diameter of the conical surface I is gradually reduced from left to right, the outer side wall of the left tube is provided with a conical surface II matched with the conical surface I, and the conical surface I and the conical surface II are in close contact to form sealing.

Under the combined action of the first conical surface, the second conical surface, the positioning ring, the annular pressure shoulder, the annular retaining shoulder and the annular sealing gasket, a plurality of seals are formed, the sealing path is prolonged, leakage is effectively avoided, and the sealing device has the advantage of good sealing effect.

Meanwhile, the first conical surface is matched with the second conical surface, so that friction between the positioning ring and the left tube can be increased, the strength of locking and positioning the left tube is increased, and the sealing performance is further improved.

In the loose joint assembly, the inner side wall of the right end of the left pipe is integrally formed with a water guide ring, the water guide ring and the left pipe are coaxially arranged, an inner hole of the water guide ring is a taper hole, the aperture of the taper hole is gradually reduced from left to right, and the minimum aperture of the taper hole is smaller than the inner diameter of the right pipe. Under the guide of the taper hole of the water guide ring, the fluid is directly introduced into the right pipe, so that the annular sealing gasket is effectively prevented from being directly impacted by the fluid, and the sealing effect is improved.

In the loose joint assembly, the right end of the right pipe is provided with external threads so as to be convenient for connecting the right pipe with other pipe fittings.

In foretell loose joint subassembly, the left end face of right side pipe on integrated into one piece be annular location portion, and location portion and right pipe coaxial setting, the sealed cover of annular is established outside location portion, the sealed both ends face of this annular offsets with right pipe left end face and left pipe right-hand member face respectively, and the sealed inside wall of annular offsets with location portion lateral wall. The positioning part is used for positioning the annular sealing gasket so as to ensure that stable sealing is formed between the right pipe and the left pipe.

In the loose joint assembly, the inclination angle of the first conical surface is 30-60 degrees.

In the loose joint assembly, the inclination angle of the first conical surface is 45 degrees.

Compared with the prior art, the loose joint assembly has the following advantages:

1. under the combined action of the first conical surface, the second conical surface, the positioning ring, the annular pressure shoulder, the annular retaining shoulder and the annular sealing gasket, a plurality of seals are formed, the sealing path is prolonged, leakage is effectively avoided, and the sealing device has the advantage of good sealing effect.

2. The first conical surface is matched with the second conical surface, so that friction between the positioning ring and the left tube can be increased, the strength of locking and positioning the left tube is increased, and the sealing performance is further improved.

3. Under the guide of the taper hole of the water guide ring, the fluid is directly introduced into the right pipe, so that the annular sealing gasket is effectively prevented from being directly impacted by the fluid, and the sealing effect is improved.

Drawings

FIG. 1 is a perspective view of a loose joint assembly.

FIG. 2 is a schematic cross-sectional view of a loose joint assembly.

Fig. 3 is an enlarged schematic view of a structure at a in fig. 2.

In the figure, 1, a left tube; 1a, an annular retaining shoulder; 1b, a second conical surface; 1c, a water guide ring; 2. a right tube; 2a, a positioning part; 3. an annular seal; 4. pressing the cap; 4a, annular pressing shoulders; 5. pressing a ring; 5a, a positioning ring; 5b and a first conical surface.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1 and 2, the loose joint assembly comprises a left pipe 1 and a right pipe 2 which are coaxially arranged, an annular sealing gasket 3 is clamped between the left pipe 1 and the right pipe 2, namely, at the moment, two end faces of the annular sealing gasket 3 are respectively abutted against the left end face of the right pipe 2 and the right end face of the left pipe 1. The left end of the right pipe 2 is sleeved with a pressing cap 4, and the pressing cap 4 is in threaded connection with the right pipe 2. The right end of the left pipe 1 is positioned in the pressing cap 4, the outer side wall of the right end of the left pipe 1 is integrally formed with an annular retaining shoulder 1a, and the annular retaining shoulder 1a and the left pipe 1 are coaxially arranged. An annular pressure shoulder 4a is integrally formed on the inner wall of the left end of the pressure cap 4, and the annular pressure shoulder 4a and the pressure cap 4 are coaxially arranged.

Specifically, as shown in fig. 2 and 3, a press ring 5 is provided between the press cap 4 and the left tube 1, and the press ring 5 is fitted outside the left tube 1. The outer side wall of the left tube 1 is integrally formed with a positioning ring 5a, the positioning ring 5a and the pressing ring 5 are coaxially arranged, and two end faces of the positioning ring 5a are respectively in close contact with the annular pressing shoulder 4a and the annular blocking shoulder 1a to form sealing. The inner side wall of the pressing ring 5 is provided with a conical surface I5 b, the diameter of the conical surface I is gradually reduced from left to right, the outer side wall of the left tube 1 is provided with a conical surface II 1b matched with the conical surface I5 b, and the conical surface I5 b is tightly contacted with the conical surface II 1b to form sealing. Under the combined action of the first conical surface 5b and the second conical surface 1b which are in close contact, the positioning ring 5a which is clamped between the annular pressure shoulder 4a and the annular retaining shoulder 1a and the annular sealing gasket 3, a plurality of seals are formed, the sealing path is prolonged, and therefore leakage is effectively avoided, and the sealing structure has the advantage of good sealing effect. In the present embodiment, the inclination angle of the first tapered surface 5b is 30 to 60 degrees, and preferably, the inclination angle of the first tapered surface 5b is 45 degrees.

Further, a water guide ring 1c is integrally formed on the inner side wall of the right end of the left pipe 1, and the water guide ring 1c and the left pipe 1 are coaxially arranged. The inner hole of the water guide ring 1c is a taper hole, the aperture of the taper hole is gradually reduced from left to right, and the minimum aperture of the taper hole is smaller than the inner diameter of the right pipe 2. Under the guide of the taper hole of the water guide ring 1c, the fluid is directly introduced into the right pipe 2, so that the fluid is effectively prevented from directly impacting the annular sealing gasket 3, and the sealing effect is improved.

As shown in fig. 1 and 2, the right pipe 2 has an external thread on the right end thereof to facilitate the connection of the right pipe 2 with other pipe members. The left end surface of the right tube 2 is integrally formed with an annular positioning part 2a, and the positioning part 2a and the right tube 2 are coaxially arranged. The annular sealing gasket 3 is sleeved outside the positioning part 2a, and the inner side wall of the annular sealing gasket 3 is abutted to the outer side wall of the positioning part 2 a. The positioning part 2a is used to position a ring 5 a-shaped gasket 3 to ensure a stable seal between the right tube 2 and the left tube 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A loose joint component comprises a left pipe (1) and a right pipe (2) which are coaxially arranged, an annular sealing gasket (3) is clamped between the left pipe (1) and the right pipe (2), a pressure cap (4) is sleeved outside the left end of the right pipe (2), the pressing cap (4) is connected with the right pipe (2) by screw, the right end of the left pipe (1) is positioned in the pressing cap (4), an annular retaining shoulder (1a) is formed on the outer side wall of the right end of the left pipe (1), an annular pressing shoulder (4a) is formed on the inner wall of the left end of the pressing cap (4), it is characterized in that a press ring (5) is arranged between the press cap (4) and the left tube (1), the pressing ring (5) is sleeved outside the left tube (1), the outer side wall of the left tube (1) is integrally provided with a positioning ring (5a), the positioning ring (5a) and the pressing ring (5) are coaxially arranged, two end surfaces of the positioning ring (5a) are respectively in close contact with the annular pressure shoulder (4a) and the annular retaining shoulder (1a) to form sealing; the inside wall of clamping ring (5) on have one section diameter by a left conical surface (5b) that turn right the taper gradually, have conical surface two (1b) that match with conical surface one (5b) on the lateral wall of left pipe (1), and conical surface one (5b) and conical surface two (1b) in close contact with form sealedly.

2. The loose joint assembly according to claim 1, wherein a water guiding ring (1c) is integrally formed on the inner side wall of the right end of the left pipe (1), the water guiding ring (1c) and the left pipe (1) are coaxially arranged, the inner hole of the water guiding ring (1c) is a taper hole, the aperture of the taper hole is gradually reduced from left to right, and the minimum aperture of the taper hole is smaller than the inner diameter of the right pipe (2).

3. The union joint assembly according to claim 1 or 2, characterized in that the right pipe (2) has an external thread on its right end.

4. The loose joint assembly according to claim 1 or 2, wherein the left end surface of the right pipe (2) is integrally formed with an annular positioning portion (2a), the positioning portion (2a) and the right pipe (2) are coaxially arranged, the annular sealing gasket (3) is sleeved outside the positioning portion (2a), two end surfaces of the annular sealing gasket (3) respectively abut against the left end surface of the right pipe (2) and the right end surface of the left pipe (1), and the inner side wall of the annular sealing gasket (3) abuts against the outer side wall of the positioning portion (2 a).

5. The loose joint assembly of claim 1 or 2, characterized in that the inclination angle of the first tapered surface (5b) is 30-60 degrees.

6. The loose joint assembly of claim 5, wherein the angle of inclination of the first tapered surface (5b) is 45 degrees.