CN210739693U - Sliding extrusion type thread conversion elbow - Google Patents

Abstract

The utility model discloses a refrigeration pipe technical field a smooth crowded formula screw thread conversion elbow, the return bend that is red copper including the material, return bend both ends axis mutually perpendicular, the one end welding of return bend has the joint main part, the return bend other end is provided with the horn mouth of outside expansion, and return bend other end outer wall sliding connection has the screw thread of interior tooth screw thread to accomodate son by the spacing sealed of horn mouth, still including the cover body and nested, cover internal chamber and joint main part outer wall joint make the inside extrusion of joint main part warp, the joint main part warp and the sealed connection of nested cooperation realization to the inside and outside wall of red copper pipe, the joint main part, the cover body, the material that nested and screw thread were accomodate son is brass. The utility model discloses do not use naked light welding, solve the easy rust problem of steel material card pressure pipe fitting, make the installation of the straight pipe of switching 90 degrees and quick loose joint's refrigeration pipe convenient more fast, the brass material is anti potential corrosion, can not rust.

Description

Sliding extrusion type thread conversion elbow

Technical Field

The utility model relates to a refrigeration pipeline technical field specifically is a smooth crowded formula screw thread conversion elbow.

Background

The connection between most of refrigeration pipe fittings is realized by the traditional welding mode, and a special pipe bender is required to be bent to 90 degrees when a corner needs to turn, manual flaring is required sometimes during installation, the conditions of poor sealing performance and the like are often caused due to uneven wall thickness, the process of the traditional welding mode is complicated, a technical worker needs to hold a special welding skill certificate to post the connection, the application and popularization of the connection are limited, meanwhile, some products which use steel clamping and pressing pipe fittings as connecting pieces can generate electric corrosion due to the potential difference relation between ① and copper, the coefficients of expansion caused by heat and contraction caused by cold are inconsistent between ② copper and other steel, the leakage risk exists, the connection between ③ copper and other steel needs to be decomposed and processed in the recovery process, and resources are wasted and the recovery process is not environment-friendly.

The open flame welding process has complex technical requirements, is easy to corrode and rust, and cannot quickly and conveniently realize the 90-degree connection of the quick loose joint connector and the straight-through pipe.

Based on this, the utility model designs a smooth crowded formula screw thread conversion elbow to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a smooth crowded formula screw thread conversion elbow to solve the numerous and diverse technical requirement of naked light welding process that proposes in the above-mentioned background art high, easily corroded the rust, the problem of the 90 degrees connections of quick loose joint and direct pipe of convenient realization fast can not be fast.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a smooth crowded formula screw thread conversion elbow, includes that the material is the return bend of red copper, return bend both ends axis mutually perpendicular, the one end welding of return bend has the joint main part, the return bend other end is provided with the bellmouth of outwards expanding, and return bend other end outer wall sliding connection has the screw thread that has interior tooth screw thread by the spacing sealed of bellmouth to accept son, still includes the cover body and inserts the inside nestification of red copper pipe, inside red copper pipe clearance fit inserts the joint main part, cover body inner chamber and joint main part outer wall joint made the inside extrusion deformation of joint main part, and through making the cover body slide by the extrusion of the during operation of chucking pincers, push joint section of thick bamboo protruding position, the material is moulding from the inner wall depressed place, and supports red copper pipe inner wall by the nestification, and the unnecessary material directly produces the plastic deformation to the crowded to red copper pipe after the extrusion, makes the sealing connection of both fusion as an organic whole, the joint main part is out of shape and the sealing connection, the clamping main body, the sleeve body and the nesting are all made of lead brass HPb60-2, and the screw nut is made of lead brass HPb 59-1.

Preferably, the joint main part comprises a main part section of thick bamboo, a joint section of thick bamboo and the card clamping ring of coaxial even as an organic whole, the card clamping ring is located the outside arch of junction outer wall of a main part section of thick bamboo and a joint section of thick bamboo, a main part section of thick bamboo and return bend one end welding are even as an organic whole.

Preferably, the wall thickness of the clamping cylinder is 0.5-1.1mm, the middle part of the clamping cylinder protrudes outwards, and the outer diameter from the free end of the clamping pressure ring to the protruding part of the middle part is smaller than the outer diameter from the protruding part of the middle part of the clamping cylinder to the clamping pressure ring.

Preferably, the length of the clamping cylinder is greater than that of the sleeve body.

Preferably, the inner diameter of the sleeve body is in interference fit with the outer diameter of a convex part from the free end to the middle part of the clamping cylinder, the wall thickness of the sleeve body is 2.4-3.1mm, an inclined angle of 8-10 degrees is outwards arranged at the inner diameter of one end, close to the clamping main body, of the sleeve body, and an inclined angle of 5-7 degrees is inwards arranged at the inner diameter of the other end of the sleeve body.

Preferably, the screw thread is received son appearance and is the regular hexagon, the screw thread is received son inside and is constituteed for coaxial internal thread hole and interior through-hole, and internal thread hole internal diameter is greater than interior through-hole internal diameter, internal thread hole and interior through-hole linking department be provided with horn mouth complex slope.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses do not use naked light welding, solve the easy rust problem of steel material card pressure pipe fitting, make the installation of the direct pipe of switching 90 degrees and the refrigeration pipe of quick loose joint convenient more fast, the brass material is anti potential corrosion, can not rust, and bulk strength is greater than that traditional pipe fitting is more withstand voltage, uses the copper product circulated, environmental protection more.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a half-sectional view of the elbow of the present invention;

FIG. 3 is a half sectional view of the clamping main body of the present invention;

FIG. 4 is a half-sectional view of the sheath body of the present invention;

fig. 5 is a half-sectional view of the nesting of the present invention;

fig. 6 is a half-sectional view of the screw nut of the present invention.

Fig. 7 is a schematic view of the clamping main body and the sleeve body of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. bending the pipe; 11. a bell mouth; 2. clamping the main body; 21. a main body barrel; 22. a clamping cylinder; 23. clamping a pressure ring; 3. a sleeve body; 4. nesting; 5. a red copper tube; 6. a screw thread is arranged; 61. an internally threaded bore; 62. an inner through hole; 63. the slope is inclined.

Detailed Description

The technical solutions 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 the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

One specific application of this embodiment is:

1. the brass pipe fitting is turned in a numerical control mode to form a thin-wall structure with a certain geometric shape, and the brass pipe fitting and the red copper pipe fitting are connected in a sealed and fastened mode through mutual extrusion between the brass pipe fitting and a special sliding and extruding caliper.

2. One end of the horn mouth with the internal thread can be in butt joint with equipment quickly to realize connection sealing and firmness.

3. The whole connection process is carried out at two ends:

(1) confirming whether the sleeve body 3 is sleeved on the clamping main body 2 or not, and carrying out subsequent steps after no error exists;

(2) firstly, scraping burrs at the inner port of the connected red copper tube 5 by using a scraper, and polishing the length of an excircle by using wire drawing cloth for visual inspection;

(3) inserting the nesting 4 into the hole of the connected red copper tube 5, wherein the outer wall of one end of the nesting 4 is provided with a convex block with the same outer diameter as the red copper tube 5;

(4) inserting the connected copper tube 5 and the nest 4 into an inner hole of a clamping cylinder 22 in the clamping main body 2 until the copper tube is blocked, enabling the copper tube 5 to be in clearance fit with the inner hole of the clamping cylinder 22, and drawing marks at the joint of the outer wall of the copper tube 5 and the free end of the clamping cylinder 22 to confirm the gluing area;

(5) coating sealant on the outer wall of the copper tube 5;

(6) after the glue is coated, the copper tube 5 to be connected and the nest 4 are inserted into an inner hole of the clamping cylinder 22 in the clamping main body 2 by rotating 180 degrees;

(7) the cover body 3 sleeved with the outer wall of the copper tube 5 is sleeved on the outer wall of the clamping cylinder 22 in the clamping main body 2, and the cover body 3 is abutted to the bulge in the middle of the clamping cylinder 22 to stop going forward continuously due to the interference fit between the inner diameter of the cover body 3 and the outer diameter of the bulge from the free end of the clamping cylinder 22 to the middle.

(8) The special sliding extrusion type clamping and pressing clamp is aligned to the tail end side wall of the clamping and pressing ring 23 in the clamping main body 2 and the sleeve body 3 which are far away from each other, the clamping and pressing clamp is adjusted to a proper width, the clamping and pressing clamp is started to tightly clamp the four parts, the arrow direction in the drawing is the clamping and pressing direction, the perpendicular surface of the arrow is the clamping and pressing end face, the sleeve body 3 extrudes the middle bulge of the clamping cylinder 22, so that the sleeve body 3 is continuously close to the clamping and pressing ring 23, the bulge part from the free end to the middle part of the clamping cylinder 22 is extruded and tightly abutted with the red copper tube 5 to realize fixation, the red copper tube 5 is softer relative to the clamping cylinder 22 of brass, the red copper tube 5 is extruded and deformed to be beneficial to tight attachment, the red copper tube 5 is clamped inside and outside the clamping cylinder 22 of the nesting 4 and is matched with sealant to realize sealing, because the inner diameter of the sleeve body 3 is in interference, so that the convex part in the middle of the clamping cylinder 22 is extruded inwards to the wall of the clamping cylinder 22 of the clamping and pressing ring 23, and the sleeve body 3 and the clamping cylinder 22 are fixed.

(9) With the inside internal thread hole 61 of screw thread son 6 and the quick loose joint articulate of being connected, because internal thread hole 61 internal diameter is greater than interior through-hole 62 internal diameter, make connected quick loose joint one end and the 1 one end butt of return bend, make the quick loose joint of being connected and the relatively fixed of return bend 1, the slope 63 in the screw thread son 6 is just laminated with the horn mouth 11 of return bend 1 one end this moment, continue to remove screw thread son 6, make slope 63 continue to be close to laminating horn mouth 11, horn mouth 11 is the material for the screw thread son 6 of the relative brass material of red copper softer, make horn mouth 11 warp improve with the sealed effect of laminating of slope 63 in the screw thread son 6.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a smooth crowded formula screw thread conversion elbow, includes that the material is return bend (1) of red copper, its characterized in that: elbow pipe (1) both ends axis mutually perpendicular, the one end welding of elbow pipe (1) has joint main part (2), elbow pipe (1) other end is provided with outside flared horn mouth (11), and elbow pipe (1) other end outer wall sliding connection has screw thread admits son (6) that have interior tooth screw thread by horn mouth (11) spacing sealing, still including the cover body (3) and insert inside nested (4) of copper pipe (5), inside copper pipe (5) clearance fit inserts joint main part (2), cover body (3) inner chamber and joint main part (2) outer wall joint make joint main part (2) inwards extrude and warp, joint main part (2) warp and nested (4) cooperation realize the sealing connection to copper pipe (5) inside and outside wall, the material of joint main part (2), cover body (3), nested (4) is lead brass HPb60-2, the material of the thread guide (6) is lead brass HPb 59-1.

2. The slip-extrusion thread transition bend of claim 1, wherein: joint main part (2) are pressed ring (23) by coaxial integrative main part section of thick bamboo (21), joint section of thick bamboo (22) and card of linking to each other and are constituteed, it is outside protruding that card clamping ring (23) are located the junction outer wall of a main part section of thick bamboo (21) and joint section of thick bamboo (22), a main part section of thick bamboo (21) and return bend (1) one end welding link is integrative.

3. The slip-extrusion thread transition bend of claim 2, wherein: the wall thickness of a joint section of thick bamboo (22) is 0.5-1.1mm, the middle part outer wall of a joint section of thick bamboo (22) is outside protruding inner wall sunken, the external diameter of joint section of thick bamboo (22) middle part arch department is less than joint section of thick bamboo (22) external diameter of joint section of thick bamboo (22) middle part arch department to joint section of thick bamboo (23) of joint ring (23) in the middle part.

4. The slip-extrusion thread transition bend of claim 2, wherein: the length of the clamping cylinder (22) is greater than that of the sleeve body (3).

5. The slip-extrusion thread transition bend of claim 3, wherein: the inner diameter of the sleeve body (3) is in interference fit with the outer diameter of a free end of the clamping cylinder (22) to a middle protruding part, the wall thickness of the sleeve body (3) is 2.4-3.1mm, an inclined angle of 8-10 degrees is outwards arranged at the inner diameter of one end, close to the clamping main body (2), of the sleeve body (3), and an inclined angle of 5-7 degrees is inwards arranged at the inner diameter of the other end of the sleeve body (3).

6. The slip-extrusion thread transition bend of claim 1, wherein: the appearance of screw thread son (6) is regular hexagon, the screw thread is inside to constitute for coaxial internal thread hole (61) and interior through-hole (62) in son (6), and internal thread hole (61) internal diameter is greater than interior through-hole (62) internal diameter, internal thread hole (61) and interior through-hole (62) link up the department be provided with bellmouth (11) complex slope (63).

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