CN213929893U

CN213929893U - Clamp-press type equal-diameter three-way joint

Info

Publication number: CN213929893U
Application number: CN202023168292.XU
Authority: CN
Inventors: 刘建良
Original assignee: Zhejiang Homebase Intelligent Technology Co ltd
Current assignee: Zhejiang Homebase Intelligent Technology Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-10
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a card pressure formula constant diameter three way connection belongs to pipe fitting technical field. It has solved the inconvenient, poor problem of connection stability of operation. The clamping and pressing device comprises a body, wherein a first clamping and pressing end and a second clamping and pressing end are arranged at two ends of the body respectively, a third clamping and pressing end is arranged on the side part of the body, convex rings are arranged at the end part of the first clamping and pressing end, the end part of the second clamping and pressing end and the end part of the third clamping and pressing end respectively, grooves are arranged at positions, corresponding to the convex rings, of the inner side of the body, sealing rings are arranged in the grooves, and positioning grooves are arranged at the inner sides of the first clamping and pressing end, the second clamping and pressing end and the third clamping and pressing end respectively; all be equipped with the rand in each recess, each rand all includes the ring body and follows the internal card that distributes and incline towards being close to the constant head tank direction of ring, and each ring body presss from both sides between the one side cell wall of keeping away from the constant head tank corresponding sealing washer and recess. It has advantages of convenient operation, high connection stability, etc.

Description

Clamp-press type equal-diameter three-way joint

Technical Field

The utility model belongs to the technical field of the pipe fitting, a card pressure formula constant diameter three way connection is related to.

Background

In some existing pipeline systems, for example, tap water systems or gas systems, a clamping and pressing type joint is gradually used, a thin-wall stainless steel pipe is inserted into the clamping and pressing type joint and then clamped outside the clamping and pressing type joint by a special hydraulic tool to clamp and press the thin-wall stainless steel pipe and the clamping and pressing type joint together. When the medium conveying device is used for conveying a medium, vibration can be generated to generate tensile force on the thin-wall stainless steel pipe, and the clamping and pressing joint and the thin-wall stainless steel pipe are thin in wall thickness and easy to deform, so that the clamping and pressing joint and the thin-wall stainless steel pipe are easy to loosen under stress, namely the tensile property is poor; and only utilize the sealing washer to seal, lead to the tightness between thin wall stainless steel pipe and the card pressure joint easily to appear loosening because of vibrations or pulling force to cause sealed effect variation.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a card pressure formula constant diameter three way connection, solved the inconvenient, poor problem of connection stability of operation.

The purpose of the utility model can be realized by the following technical proposal:

the clamping and pressing type equal-diameter three-way joint is characterized in that positioning grooves are arranged on the inner side of the first clamping and pressing end, the inner side of the second clamping and pressing end and the inner side of the third clamping and pressing end, one side groove wall of each positioning groove close to the corresponding groove is a straight surface, and one side groove wall of each positioning groove far away from the corresponding groove is an inclined surface inclined towards the direction far away from the groove; all be equipped with the rand in each recess, each rand all includes the ring body and follows the internal card that distributes and incline towards being close to the constant head tank direction of ring, and each ring body presss from both sides between the one side cell wall of keeping away from the constant head tank corresponding sealing washer and recess.

When the clamping device is used, the first clamping end, the second clamping end and the third clamping end are inserted into the pipe fitting. Taking the connection between the pipe fitting and the first clamping and pressing end as an example, after the pipe fitting is inserted, the sealing ring arranged in the groove in the first clamping and pressing end abuts against the outer wall of the pipe fitting to form sealing. Because be equipped with the rand in the recess, the pipe fitting passes and outwards struts each card on the rand from the rand center, receives the card interlock to make the pipe fitting can't outwards slide in the pipe fitting outside, so installer just need not vacate a hand and push up the pipe fitting in order to avoid its roll-off when utilizing the card to press the instrument to carry out the card between pipe fitting and the first card pressure end, convenience when having improved the installation. The length and the inclination angle of the clamping piece do not influence the contact sealing between the inserted pipe fitting and the sealing ring in the design process. In addition, due to the positioning groove, when an installer clamps the first clamping end by using the clamping and pressing tool to clamp the first clamping end so as to clamp the first clamping end and the pipe fitting, the positioning bulge matched with the positioning groove can be formed on the outer wall of the pipe fitting, and the first clamping end and the pipe fitting can be connected together more firmly by matching the positioning bulge with the positioning groove. The connection mode of the second clamping end, the third clamping end and the pipe fitting is the same as that of the first clamping end.

In the above-mentioned card-pressing type equal-diameter three-way joint, the groove wall of the groove on the side close to the positioning groove is inclined towards the direction close to the positioning groove to form a guide surface.

In the above-mentioned card-pressing type equal-diameter three-way joint, the first card-pressing end, the second card-pressing end and the third card-pressing end all have the same inner diameter.

In foretell card pressure formula constant diameter three way connection, the body including be the main part that the form just adopts tubular product to make directly, first card pressure end forms from inside to outside extrusion back by the main part with second card pressure end, the main part lateral part runs through and is provided with the through-hole, the main part lateral part has the connector that forms from through-hole department outside extrusion back, the third card pressure end is linked firmly the tubular product outside the connector by a welding mode and forms from inside to outside extrusion back.

When the pipe clamp is produced, a long pipe and a short pipe are obtained in a cutting mode, the long pipe is used as a main body, and the short pipe is used for manufacturing a third clamping end. The through hole is formed in the side portion of the long pipe in a punching mode, then the two ends of the main body are respectively extruded from inside to outside, so that the first clamping end and the second clamping end are formed, and then the main body is extruded outwards from the through hole of the side portion to form the connecting port. And then, one end of the shorter pipe is sleeved outside the connector and fixedly connected with the connector into a whole in a welding mode, namely the body of the clamping and pressing type equal-diameter three-way connector, and finally, the shorter pipe is extruded from inside to outside to form a third clamping and pressing end of the body.

In the above-mentioned card pressure type constant diameter three-way connection, the junction between the inner wall of the first card pressure end and the inner wall of the main body forms a first positioning step, the junction between the inner wall of the second card pressure end and the inner wall of the main body forms a second positioning step, and the junction between the inner wall of the third card pressure end and the inner wall of the connection opening forms a third positioning step.

In the above-mentioned clamping-pressing type equal-diameter three-way joint, the main body and the pipe for forming the third clamping-pressing end are both made of carbon steel materials.

Compared with the prior art, this card pressure formula constant diameter three way connection enables the body and forms more firm connection between the corresponding pipe fitting when utilizing the card to press the instrument to carry out the card pressure fixedly through setting up the position circle, has improved tensile strength, has guaranteed the stability of using. And, can form very inseparable laminating after pressing fixedly with the pipe fitting card, combine the constant head tank setting again for the sealing performance between with the pipe fitting has been improved widely.

In addition, the clamping ring is meshed outside the pipe fitting, so that an installer does not need to fix the pipe fitting by one hand when operating a clamping and pressing tool, and the convenience of installation is improved. Moreover, the clamping ring can further improve the connection firmness with the pipe fitting.

Drawings

FIG. 1 is a sectional view of the present click type constant diameter three-way joint.

In the figure, 1, a body; 1a, a first clamping and pressing end; 1b, a second clamping and pressing end; 1c, a third clamping and pressing end; 1d, a convex ring; 1e, a groove; 1f, a main body; 1f1, through holes; 1f2, a connecting port; 1g, a first step; 1h, a second step; 1i, a third step; 1j, positioning grooves; 2. a seal ring; 3. and a collar.

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 fig. 1, the clamping-pressing type equal-diameter three-way joint includes a body 1 having a first clamping-pressing end 1a and a second clamping-pressing end 1b at two ends, a third clamping-pressing end 1c is disposed at a side portion of the body 1, and the first clamping-pressing end 1a, the second clamping-pressing end 1b and the third clamping-pressing end 1c have the same inner diameter. Wherein, body 1 is including being the main part 1f that the form just adopts tubular product to make directly, and first card is pressed end 1a and second card and is pressed end 1b and form by main part 1f after extrudeing from inside to outside, and main part 1f lateral part is run through and is provided with through-hole 1f1, and main part 1f lateral part has the connector 1f2 that forms after the department extrudees outwards from through-hole 1f1, and third card is pressed end 1c and is formed by a tubular product that links firmly outside connector 1f2 through the welding mode after extrudeing from inside to outside. The main body 1f and the pipe for forming the third clamping and pressing end 1c are made of carbon steel materials.

When the pipe is produced, a long pipe and a short pipe are obtained in a cutting mode, the long pipe is used as the main body 1f, and the short pipe is used for manufacturing the third clamping end 1 c. The through hole 1f1 is punched on the side of the longer tube, then the two ends of the main body 1f are respectively pressed from the inside to the outside, thus forming the first clamping end 1a and the second clamping end 1b, and then the main body 1f is pressed from the through hole 1f1 of the side to the outside to form the connecting port 1f 2. Then, one end of the shorter pipe is sleeved outside the connecting port 1f2 and fixedly connected into a whole in a welding mode, namely the body 1 of the clamping and pressing type equal-diameter three-way joint, and finally, the shorter pipe is extruded from inside to outside to form a third clamping and pressing end 1c of the body 1. After production is finished, a first positioning step 1g is formed at the joint between the inner wall of the first clamping and pressing end 1a and the inner wall of the main body 1f, a second positioning step 1h is formed at the joint between the inner wall of the second clamping and pressing end 1b and the inner wall of the main body 1f, and a third positioning step 1i is formed at the joint between the inner wall of the third clamping and pressing end 1c and the inner wall of the connecting port 1f 2.

The tip of first card pressure end 1a, the tip of second card pressure end 1b and the tip of third card pressure end 1c all are equipped with bulge loop 1d, and the inboard corresponding department in position with each bulge loop 1d of body 1 all is equipped with recess 1e, is equipped with sealing washer 2 in each recess 1 e. The inner sides of the first clamping end 1a, the second clamping end 1b and the third clamping end 1c are respectively provided with a positioning groove 1j, the groove wall of one side of each positioning groove 1j, which is close to the corresponding groove 1e, is a straight surface, and the groove wall of one side of each positioning groove 1j, which is far away from the corresponding groove 1e, is an inclined surface inclined towards the direction far away from the groove 1 e. All be equipped with rand 3 in each recess 1e, each rand 3 all includes the ring body and along the internal card that distributes and incline towards the direction of being close to constant head tank 1j of ring body, each ring body presss from both sides between the one side cell wall of keeping away from constant head tank 1j corresponding sealing washer 2 and recess 1 e. The groove wall of the groove 1e at one side close to the positioning groove 1j inclines towards the direction close to the positioning groove 1j to form a guide surface. The length and the inclination angle of the clamping piece are designed so as not to influence the contact and sealing between the inserted pipe fitting and the sealing ring 2.

When in use, the first clamping and pressing end 1a, the second clamping and pressing end 1b and the third clamping and pressing end 1c are all inserted into the pipe fittings. Taking the connection between the pipe fitting and the first clamping and pressing end 1a as an example, after the pipe fitting is inserted, the sealing ring 2 arranged in the groove 1e in the first clamping and pressing end 1a abuts against the outer wall of the pipe fitting to form sealing. Because be equipped with rand 3 in the recess 1e, the pipe fitting passes and outwards struts each card on the rand 3 from rand 3 center, receives the card interlock and makes the pipe fitting unable outside slip in the pipe fitting outside, so installer just need not vacate a hand and push up the pipe fitting in order to avoid its roll-off when utilizing the card to press the instrument to carry out the card to pressing between pipe fitting and the first card pressure end 1a, convenience when having improved the installation. In addition, due to the arrangement of the positioning groove 1j, when an installer clamps the first clamping end 1a by using the clamping and pressing tool to clamp the first clamping end 1a and fix the first clamping end and the pipe fitting in a clamping and pressing manner, a positioning bulge matched with the positioning groove 1j can be formed on the outer wall of the pipe fitting, and the first clamping end 1a and the pipe fitting can be connected together more firmly by matching the positioning bulge with the positioning groove 1 j. The connection modes of the second clamping end 1b, the third clamping end 1c and the pipe fitting are the same as the connection mode of the first clamping end 1 a.

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. The clamping and pressing type equal-diameter three-way joint comprises a body (1) with a first clamping and pressing end (1a) and a second clamping and pressing end (1b) at two ends, wherein a third clamping and pressing end (1c) is arranged on the side part of the body (1), the end part of the first clamping and pressing end (1a), the end part of the second clamping and pressing end (1b) and the end part of the third clamping and pressing end (1c) are respectively provided with a convex ring (1d), grooves (1e) are formed in the positions, corresponding to the convex rings (1d), of the inner side of the body (1), sealing rings (2) are arranged in the grooves (1e), the clamping and pressing type equal-diameter three-way joint is characterized in that the inner side of the first clamping and pressing end (1a), the inner side of the second clamping and pressing end (1b) and the inner side of the third clamping and pressing end (1c) are respectively provided with a positioning groove (1j), one side wall of each positioning groove (1j), which is close to the corresponding groove (1e), is a straight surface, and one side of each positioning groove (1j) is far away from the corresponding groove (1e) is inclined towards the direction of the inclined surface far away from the groove (1 e); all be equipped with rand (3) in each recess (1e), each rand (3) all include the ring body and along the internal card that distributes and incline towards being close to constant head tank (1j) direction of ring, each ring body presss from both sides between the one side cell wall of keeping away from constant head tank (1j) corresponding sealing washer (2) and recess (1 e).

2. The three-way union according to claim 1, wherein the groove wall of the groove (1e) near the positioning groove (1j) is inclined toward the positioning groove (1j) to form a guide surface.

3. The three-way union according to claim 2, wherein the first, second and third clamping ends (1a, 1b, 1c) have the same inner diameter.

4. The clamp-press type constant-diameter three-way joint according to claim 1, 2 or 3, wherein the body (1) comprises a main body (1f) which is straight-through and made of a pipe material, the first clamp-press end (1a) and the second clamp-press end (1b) are formed by extruding the main body (1f) from inside to outside, a through hole (1f1) is arranged at the side part of the main body (1f) in a penetrating manner, a connecting port (1f2) formed by extruding the main body (1f1) from outside is arranged at the side part of the main body (1f), and the third clamp-press end (1c) is formed by extruding the pipe material which is fixedly connected to the outside of the connecting port (1f2) from inside to outside in a welding manner.

5. The three-way union according to claim 4, wherein the joint between the inner wall of the first clamping and pressing end (1a) and the inner wall of the main body (1f) forms a first positioning step (1g), the joint between the inner wall of the second clamping and pressing end (1b) and the inner wall of the main body (1f) forms a second positioning step (1h), and the joint between the inner wall of the third clamping and pressing end (1c) and the inner wall of the connecting port (1f2) forms a third positioning step (1 i).

6. The three-way union according to claim 4, wherein the main body (1f) and the pipe forming the third clamping end (1c) are made of carbon steel.