CN204284760U - A kind of three-limb tube part - Google Patents

Abstract

The utility model discloses a kind of three-limb tube part, comprise tee union, external member, supporting straight-through tube and О RunddichtringO, described tee union comprises cutting ferrule pipeline section, cone shape hole pipeline section, straight length, cone shape hole pipeline section and straight length are installed along central axis, and cutting ferrule pipeline section is installed perpendicular to central axis; Described cutting ferrule pipeline section and external member in mating connection, cone shape hole pipeline section and supporting straight-through tube in mating connection; Described external member comprises overcoat, cutting ferrule, compressing tablet, V-shaped seal ring, liner core; In described tee union, pipeline section intersection is provided with inner chamber, and the inwall of inner chamber is provided with buffer layer; The first shoulder hole, the second shoulder hole is had in the cutting ferrule pipeline section of tee union.The utility model has the advantages that to connect firm, good seal performance, the buffer layer that the inwall of inner chamber is provided with, and can ensure that tee union is wear-resistant under impact, not easily fracture damage, not yielding, can ensure the reliability of connection, long service life.

Description

A three-way connecting pipe fitting

【Technical field】

The utility model relates to the technical field of connecting pipe fittings, in particular to the technical field of three-way connecting pipe fittings.

【Background technique】

Pipe fittings are a general term for components that play the roles of connection, control, direction change, diversion, sealing, support, etc. in the pipeline system. They are an important part of connecting pipes to pipelines. , flange fittings and welded fittings four categories. Pipe fittings are mostly made of the same material as pipes, including elbows, flanges, tees, crosses, and reducers.

Pipe fittings are generally used to transmit fluid. In order to prevent fluid leakage, it is generally required to be seamlessly connected between pipe fittings. Install or wrap sealing material at the joint, when the pipe end is threaded, there must be a matching device, and when the flange is connected, many accessories are required.

A pipe joint with three openings is called a tee. Tee pipes are widely used in the pipe network for transporting liquids and gases, mainly for diversion and diversion of liquid flow. The joints of three-way pipe fittings are subject to a large impact force, and long-term impact may cause deformation and affect the transportation of liquid flow. The ferrule-type joint is usually used when the tee joint is connected to the pipeline. The connection principle of the ferrule-type pipe joint is that the sharp inner edge of the ferrule gradually cuts into the outer wall of the steel pipe under the action of progressively increasing tightening torque, and a reliable and sealed pipe fitting is achieved. connection purpose. The existing defect is that the joint part is prone to cracks and leakage after a period of use. In addition, the pipe joints installed outside have poor pressure bearing capacity, are easily deformed and damaged after being subjected to external forces, and the sealing performance is reduced.

【Content of utility model】

The purpose of this utility model is to solve the problems in the prior art, and to propose a three-way connecting pipe fitting, which is reliable in connection, has good sealing performance, is wear-resistant under impact, is not easy to break and damage, is not easy to deform, and has a long service life.

In order to achieve the above purpose, the utility model proposes a three-way connecting pipe fitting, including a three-way joint, a kit, a matching straight-through pipe and an О-shaped sealing ring. The three-way joint includes a ferrule pipe section, a tapered hole pipe section, and a straight pipe section , the tapered hole pipe section and the straight pipe section are installed along the central axis, and the ferrule pipe section is installed perpendicular to the central axis; the ferrule pipe section is matched with the kit, and the tapered hole pipe section is matched with the supporting straight pipe; the kit includes Jacket, ferrule, pressing sheet, V-shaped sealing ring, inner lining core; an inner cavity is provided at the intersection of the inner pipe sections of the three-way joint, and a buffer layer is provided on the inner wall of the inner cavity; the inner opening of the ferrule pipe section of the three-way joint There are first stepped hole and second stepped hole.

As a preference, the straight pipe section is provided with an internal thread, which can be connected with other pipe fittings; the outer wall of the tee joint is provided with a reinforcing rib, and the reinforcing rib is located at the junction of the ferrule pipe section, the tapered hole pipe section, and the straight pipe section. The number of is several.

As a preference, the end face of one end of the inner lining core is installed in cooperation with the first stepped hole, and the inner lining core is sequentially set with a V-shaped sealing ring, a pressing piece, a ferrule, and the V-shaped sealing ring and the second stepped hole of the ferrule pipe section Cooperate installation; the V-shaped sealing ring is connected with the pressure piece, the pressure piece is connected with the ferrule, the jacket is installed outside the ferrule, the ferrule and the jacket are pressed and installed, the pressure piece and the jacket are also connected with the pipe section of the ferrule The second stepped hole matches the installation.

As a preference, the inner liner core is press-fitted with the first stepped hole, and the V-shaped sealing ring of the inner liner core is pressed into the second stepped hole to realize the seal between the sleeve and the tube section; the first stepped hole is located at Inside of the tube section, the second stepped hole is on the outside of the tube section.

Preferably, the matching straight pipe includes a tapered section and a connecting pipe section, and the outer wall of the connecting pipe section is provided with connecting threads.

As a preference, there is a tapered opening in the pipe section of the tapered hole, the large end of the tapered opening opens to the outer end of the tee joint, and the tapered section of the straight-through pipe is matched with the tapered opening to realize the tapered opening Conical extruded connection with conical segments.

Preferably, a О-shaped sealing ring is installed on the tapered section, and the О-shaped sealing ring squeezes into the tapered opening to realize the sealing between the tapered opening and the tapered section; there are multiple О-shaped sealing rings.

Beneficial effects of the utility model: the utility model achieves the purpose of sealing and connecting the bent pipe fittings through the ferrule-type connection and the cone-sealed connection. After connecting with the pipeline, it has the characteristics of reliable connection and good sealing performance. Some buffer layers, in the working process of the tee fittings, can ensure that the tee joints are resistant to wear under impact and are not easy to break and damage. It ensures the pressure bearing capacity of the outside of the tee joint and is not easily deformed. Simple structure, easy to use, excellent manufacture, light and beautiful appearance, good performance of repeated assembly and disassembly; the added structure of pressing sheet, ferrule, V-shaped sealing ring and multiple О-shaped sealing rings can ensure the reliability of sealing, and the joint part is not easy Leakage occurs and the service life is long.

The features and advantages of the utility model will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is the connection schematic diagram of a kind of tee connection pipe fitting of the present utility model;

Fig. 2 is a schematic diagram of a three-way joint of a three-way connecting pipe fitting of the utility model;

Fig. 3 is a schematic diagram of the kit connection of a tee connection pipe fitting of the present invention;

Fig. 4 is a schematic diagram of a straight-through pipe connection of a three-way connection pipe fitting of the present invention.

In the figure: 1-tee joint, 11-tube section, 111-first stepped hole, 112-second stepped hole, 12-tapered hole pipe section, 121-tapered opening, 13-straight pipe section, 131-inner Thread, 14-inner cavity, 141-buffer layer, 15-reinforcing rib, 2-kit, 21-coat, 22-ferrule, 23-press piece, 24-V-shaped sealing ring, 25-lining core, 3- Matching straight pipe, 31-conical section, 32-connecting pipe section, 321-connecting thread, 4-О type sealing ring.

【Detailed ways】

Referring to Figures 1 to 4, the utility model includes a tee joint 1, a kit 2, a matching straight pipe 3 and an О-shaped sealing ring 4, and the tee joint 1 includes a tube section 11, a tapered hole section 12, a straight The pipe section 13, the tapered hole pipe section 12 and the straight pipe section 13 are installed along the central axis, and the ferrule pipe section 11 is installed perpendicular to the central axis; 3 are matched and connected; the set 2 includes an outer jacket 21, a ferrule 22, a pressing piece 23, a V-shaped sealing ring 24, and a lining core 25; A buffer layer 141 is provided on the inner wall of 14; a first stepped hole 111 and a second stepped hole 112 are opened in the tube section 11 of the tee joint 1 .

The straight pipe section 13 is provided with an internal thread 131, which can be connected with other pipe fittings; the outer wall of the tee joint 1 is provided with a reinforcing rib 15, and the reinforcing rib 15 is located between the ferrule pipe section 11, the tapered hole pipe section 12, and the straight pipe section 13. There are several reinforcing ribs 15 at the junction. The end surface of one end of the inner lining core 25 is fitted with the first stepped hole 111, and the inner lining core 25 is sequentially fitted with a V-shaped sealing ring 24, a pressing piece 23, a ferrule 22, and the V-shaped sealing ring 24 and the ferrule pipe section 11 The second stepped hole 112 is matched with the installation; the V-shaped sealing ring 24 is connected with the pressure piece 23, the pressure piece 23 is connected with the ferrule 22, and the ferrule 22 is equipped with a jacket 21, between the ferrule 22 and the jacket 21 Compression installation, the pressing piece 23 and the jacket 21 are also installed in cooperation with the second stepped hole 112 of the tube section 11 . The inner lining core 25 is press-fitted with the first stepped hole 111, and the V-shaped sealing ring 24 of the inner lining core 25 is pressed into the second stepped hole 112 to realize the sealing between the sleeve 2 and the tube section 11; the second A stepped hole 111 is located inside the tube section 11 , and a second stepped hole 112 is located outside the tube section 11 . The matching straight pipe 3 includes a tapered section 31 and a connecting pipe section 32 , and the outer wall of the connecting pipe section 32 is provided with a connecting thread 321 . There is a tapered opening 121 inside the tapered hole pipe section 12, the large end of the tapered opening 121 opens to the outer end of the tee joint 1, and the tapered section 31 of the straight-through pipe 3 is matched with the tapered opening 121 for installation. The conical extrusion connection of the conical opening 121 and the conical section 31 is realized. The О-type sealing ring 4 is installed on the tapered section 31, and the О-type sealing ring 4 squeezes into the tapered opening 121 to realize the sealing between the tapered opening 121 and the tapered section 31; the quantity of the О-shaped sealing ring 4 is Multiple.

The working process of the utility model:

In the working process of a three-way connection pipe fitting of the utility model, the ferrule pipe section 11 of the three-way joint 1 is sealed and connected with the set 2, and the tapered hole pipe section 12 and the matching straight-through pipe 3 are cooperated and sealed, and the set 2 is pressed into the three-way joint. In the joint 1, the inner lining core 25 will press the first stepped hole 111, the pressing piece 23 and the outer jacket 21 will press the inner wall of the tube section 11, and the V-shaped sealing ring 24 outside the inner lining core 25 realizes the inner lining core 25 and The seal between the tube sections 11 of the ferrule; the tapered section 31 of the matching straight-through pipe 3 is installed in cooperation with the tapered opening 122 to realize the tapered extrusion connection between the tapered opening 122 and the tapered section 31 . The О-shaped sealing ring 4 installed on the tapered section 31 squeezes into the tapered opening 122 to realize the sealing between the tapered opening 122 and the tapered section 31 .

The buffer layer 141 provided on the inner wall of the inner cavity 14 can ensure that the tee joint 1 is wear-resistant under impact and is not easy to break and damage during the working process of the tee fitting. The liquid flow flows smoothly, and the setting of the reinforcing rib 15 ensures the external pressure bearing capacity of the tee joint 1 and is not easily deformed.

The utility model achieves the purpose of sealing and connecting bent pipe fittings through ferrule-type connection and cone-sealed connection. After connecting with the pipeline, it has the characteristics of reliable connection and good sealing performance. The buffer layer 141 provided on the inner wall of the inner cavity 14, During the working process of the tee pipe fittings, it can ensure that the tee joint 1 is resistant to wear under impact and is not easy to break and damage. The external pressure bearing capacity of the tee joint 1 is improved, and it is not easily deformed. Simple structure, easy to use, excellent manufacture, light and beautiful appearance, good performance of repeated assembly and disassembly; the added structure of pressing piece 23, ferrule 22, V-shaped sealing ring 24 and multiple О-shaped sealing rings 4 can ensure the reliability of sealing , the combined part is not easy to leak and has a long service life.

The above-mentioned embodiment is an illustration of the utility model, not a limitation of the utility model, and any scheme after a simple transformation of the utility model belongs to the protection scope of the utility model.

Claims (7)

1. A tee connection pipe fitting, characterized in that: it comprises a tee joint (1), a set (2), a supporting straight pipe (3) and an О-type sealing ring (4), and the tee joint (1) includes Tube section (11), tapered hole tube section (12), straight tube section (13), tapered hole tube section (12) and straight tube section (13) are installed along the central axis, and the tube section (11) is perpendicular to the central axis Installation; the pipe section of the ferrule (11) is matched with the sleeve (2), and the tapered hole pipe section (12) is connected with the matching straight pipe (3); the sleeve (2) includes the outer jacket (21), the clamp Sleeve (22), pressing sheet (23), V-shaped sealing ring (24), inner lining core (25); said tee joint (1) is provided with an inner chamber (14) at the junction of the inner pipe sections, and the inner chamber (14 ) is provided with a buffer layer (141) on the inner wall; a first stepped hole (111) and a second stepped hole (112) are opened in the tube section (11) of the tee joint (1). 2. A tee connection pipe fitting according to claim 1, characterized in that: the straight pipe section (13) is provided with an internal thread (131), which can be connected with other pipe fittings; the outer wall of the tee joint (1) Reinforcing ribs (15) are arranged on the top, and the reinforcing ribs (15) are located at the junction of the tube section (11) with the tapered hole (12) and the straight pipe section (13). The number of the reinforcing ribs (15) is several. 3. A tee connection pipe fitting according to claim 1, characterized in that: the end surface of one end of the inner lining core (25) is fitted with the first stepped hole (111), and the inner lining core (25) is sequentially installed. A V-shaped sealing ring (24), a pressing piece (23), and a ferrule (22) are set in a suit, and the V-shaped sealing ring (24) is installed in cooperation with the second stepped hole (112) of the tube section (11); the V Type sealing ring (24) is connected with pressing sheet (23), and pressing sheet (23) is connected with ferrule (22), and jacket (21) is installed outside ferrule (22), and ferrule (22) and jacket ( 21) between the compression installation, the pressing piece (23) and the outer cover (21) are also installed in cooperation with the second stepped hole (112) of the tube section (11). 4. A tee connection pipe fitting according to claim 1, characterized in that: the inner lining core (25) is squeezed and fitted with the first stepped hole (111), and the V-shaped seal of the inner lining core (25) The ring (24) is pressed into the second stepped hole (112) to realize the seal between the sleeve (2) and the tube section (11); the first stepped hole (111) is located inside the tube section (11), The second stepped hole (112) is located on the outside of the tube section (11). 5. A tee connection pipe fitting as claimed in claim 1, characterized in that: the matching straight pipe (3) comprises a tapered section (31) and a connecting pipe section (32), and the outer wall of the connecting pipe section (32) is provided with With connecting thread (321). 6. A tee connection pipe fitting according to claim 5, characterized in that: a tapered opening (121) is opened in the tapered hole pipe section (12), and the large end of the tapered opening (121) opens to The outer end of the three-way joint (1) is matched with the tapered section (31) of the straight-through pipe (3) and the tapered opening (121) for installation, so that the tapered opening (121) and the tapered section (31) are matched. shaped extrusion connection. 7. A tee connection pipe fitting as claimed in claim 6, characterized in that: a О-shaped sealing ring (4) is installed on the tapered section (31), and the О-shaped sealing ring (4) squeezes into the conical The opening (121) realizes the sealing between the tapered opening (121) and the tapered section (31); the number of О-shaped sealing rings (4) is multiple.