CN109681702B

CN109681702B - Pipe joint structure

Info

Publication number: CN109681702B
Application number: CN201811482689.0A
Authority: CN
Inventors: 蔡永潮
Original assignee: Zhejiang Houdar Intelligent Technology Co Ltd
Current assignee: Zhejiang Houdar Intelligent Technology Co Ltd
Priority date: 2018-12-05
Filing date: 2018-12-05
Publication date: 2020-07-03
Anticipated expiration: 2038-12-05
Also published as: CN111503388A; CN109681702A

Abstract

The invention relates to a pipeline joint structure which comprises a first pipe head and a second pipe head, wherein one end of the first pipe head is provided with an internal thread pipe section and a positioning step positioned at the inner end of the internal thread pipe section, one end of the second pipe head is provided with an external thread pipe section, the external thread pipe section is in threaded connection with an internal and external thread pipe section sleeved on the external thread pipe section, the internal and external thread pipe sections are in threaded connection in the internal thread pipe section to connect the second pipe head and the first pipe head together, the internal thread pipe section and the external thread pipe section are in sealed connection through a sealing assembly, the external thread pipe section and the internal and external thread pipe sections are completely accommodated in the internal thread pipe section, and the external thread. The detachable pipeline connecting device has the advantages of being capable of avoiding the exposure of the connecting outlet threads of the pipelines and realizing the detachable connection of the two pipelines, and is used for solving the problem that the detachable connection and the exposure of the threads cannot be considered when the two pipelines are connected.

Description

Pipe joint structure

Technical Field

The invention relates to a mechanical structure on traditional Chinese medicine production equipment, in particular to a pipeline joint structure.

Background

In traditional chinese medicine automated production equipment, need just can dismantle sealing connection with two bodys and realize the transport of liquid together. The mode that can dismantle the connection is sealed to two bodys now sets up the thread end on the tip of two bodys, then after winding on the thread end raw rubber belt threaded connection realizes dismantling the connection on the both ends of internal thread tube head, realizes sealedly through the deformation of raw rubber belt. In the connection mode, when the length of the thread head and the length of the internal thread pipe head are changed, the threads at the connection part are exposed, the thread exposure is poor in attractiveness, dust is easy to accumulate due to poor smoothness, the cleaning is not easy, and the sealing is inconvenient when the sealing is carried out through a raw rubber belt; if the two pipelines are welded together for sealing connection without arranging thread heads on the two pipelines, the threads can be prevented from being exposed, but the welding is inconvenient when the disassembly is carried out.

Disclosure of Invention

The invention provides a pipeline joint structure which can not only prevent threads at the joint of pipelines from being exposed, but also realize detachable connection of two pipelines, and is used for solving the problem that detachable connection and thread exposure prevention cannot be realized when the two pipelines are connected in the prior art.

The technical problem is solved by the following technical scheme: the utility model provides a joint structure for pipeline, includes first tube head and second tube head, the one end of first tube head is equipped with the internal thread pipeline section and is located the inner location step of internal thread pipeline section, the one end of second tube head is equipped with the external screw thread pipeline section, threaded connection has the interior external screw thread pipeline section of cover on the external screw thread pipeline section, interior external screw thread pipeline section threaded connection is in the internal thread pipeline section and link together second tube head and first tube head, the internal thread pipeline section with the external screw thread pipeline section is in the same place through sealed assembly sealing connection, external screw thread pipeline section and interior external screw thread pipeline section complete holding are in the internal thread pipeline section, the one end of keeping away from the second tube head of external screw thread pipeline section links together through the mechanism of installing and removing automatically. The method for connecting two pipelines comprises the step of respectively welding the two pipelines on the other section of the first pipe head and the other end of the second pipe head, so that the two pipelines are connected together through the method. This technical scheme can change the distance between the free end of internal and external screw thread section and the second tube head end plate through the overlapping feeding between internal and external screw thread pipe and the external screw thread section for the external screw thread section all is located into the mouth and avoids the screw thread to expose. The first pipe head with the internal thread pipe sections with different lengths can be matched with the same second pipe head, and the universality is good.

Preferably, the outer end of internal thread pipe section is equipped with the major diameter section and forms first sealed step, form the sealed step of second between external thread pipe section and the second tube head, seal assembly is including setting up along the annular of second tube head circumference extension on the sealed step of second, be located the annular sealed gasbag of annular and set up and be in the sealing ring of the circumference extension of the internal thread pipe section of edge on the first sealed step, the sealing ring can wear to establish extrude in the annular sealed gasbag and make the annular sealed gasbag warp and seal first sealed step and second and step sealing connection together, the second tube head can insert in the major diameter section. The sealing assembly has good sealing effect, and can simultaneously realize sealing between the external thread pipe end and the internal thread pipe section and between the internal thread pipe section and the external thread pipe section. The problem of current inconvenient when sealing through the raw sticky tape is solved.

Preferably, the sealing ring is provided with a plurality of annular sealing teeth which are sequentially sleeved together, and the annular sealing teeth extend along the circumferential direction of the internal thread pipe section. The sealing effect can be further improved.

Preferably, the automatic assembling and disassembling mechanism comprises an axial insertion hole formed in an inner end face of the inner and outer thread pipe section, a first lock pin penetrating through the axial insertion hole and a first lock pin extension spring driving the first lock pin to extend out of the inner end face of the axial insertion hole, the axial insertion hole is provided with a radial insertion hole penetrating through an inner circumferential surface of the inner and outer thread pipe section, an annular locking groove formed in an outer circumferential surface of the outer thread section and capable of aligning with the radial insertion hole and extending along the circumferential direction of the outer thread section, a second lock pin penetrating through the radial insertion hole and a second lock pin extension spring driving the second lock pin to insert into the annular locking groove, the second lock pin is provided with an unlocking hole aligned with the first lock pin, and an insertion guide head is arranged at an inner end of the. This structure can be including the external screw thread pipeline section screw to the inner of internal screw thread pipeline section promptly when the bottom automatically disengage and make the external screw thread pipeline section can rotate, and the external screw thread pipeline section can not rotate for the internal and external screw thread pipeline section before not tripping to the internal and external screw thread pipeline section can not rotate for the internal screw thread pipeline section when avoiding need screwing in. After the pipe is taken out, when the first lock pin is aligned with the annular locking groove, the automatic assembling and disassembling mechanism can be automatically connected to lock the internal and external thread pipe sections together.

The invention has the following advantages: can be used for carrying out sealing connection and connecting out to two pipelines and can avoid the screw thread to expose.

Drawings

Fig. 1 is a schematic view of the present invention in use when not sealingly connected.

Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a partially enlarged schematic view of a portion B of fig. 1.

Fig. 4 is a schematic view of the present invention when sealingly attached.

Fig. 5 is a partially enlarged schematic view of fig. 4 at C.

In the figure: the pipe joint comprises a pipe 1, another pipe 2, a first pipe head 90, an internal thread pipe section 91, a positioning step 92, a first sealing step 93, an external thread pipe section 94, a second sealing step 95, an internal and external thread pipe section 96, a sealing assembly 97, a ring groove 971, an annular sealing air bag 972, a sealing ring 973, an annular sealing tooth 974, an automatic assembling and disassembling mechanism 98, an axial insertion hole 981, a first locking pin 982, a first locking pin extension spring 983, a radial insertion hole 984, an annular locking groove 985, a second locking pin 986, a second locking pin extension spring 987, an unlocking hole 988, an insertion guide head 989 and a second pipe head 99.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1, 2, 3, 4 and 5, a pipe joint structure includes a first pipe head 90 and a second pipe head 99. An internally threaded pipe section 91 and a positioning step 92 at the inner end of the internally threaded pipe section are provided in one end of the first pipe head. The outer end of the internally threaded tubular section is provided with a large diameter section to form a first sealing step 93. The second stub out 99 is provided with an externally threaded pipe section 94 at one end. A second sealing step 95 is formed between the externally threaded pipe section and the second pipe head. The second stub 99 can be inserted into the large diameter section. The external thread pipe section is in threaded connection with an internal and external thread pipe section 96 which is sleeved on the external thread pipe section. The inlet of the second cartridge and the inlet of the first cartridge are sealingly connected together by a sealing assembly 97. The sealing assembly comprises an annular groove 971 arranged on the second sealing step and extending along the circumferential direction of the second pipe head, an annular sealing air bag 972 positioned in the annular groove, and a sealing ring 973 arranged on the first sealing step and extending along the circumferential direction of the internally threaded pipe section. The sealing ring can penetrate through the annular groove to seal the annular sealing air bag, so that the annular sealing air bag deforms to connect the inlet of the second pipe head and the inlet of the first pipe head together in a sealing mode. The sealing ring is provided with a plurality of (specifically 2) annular sealing teeth 974 which are sequentially sleeved together. The annular sealing tooth extends in the circumferential direction of the internally threaded pipe section. The end of the externally threaded pipe section remote from the second pipe head is connected to the end of the internally and externally threaded pipe section near the second pipe head by an automatic assembly and disassembly mechanism 98. The automatic assembly and disassembly mechanism comprises an axial insertion hole 981 arranged on the inner end face of the inner and outer thread pipe sections, a first lock pin 982 arranged in the axial insertion hole in a penetrating mode, and a first lock pin extending spring 983 driving the first lock pin to extend out of the inner end face of the axial insertion hole. The axial jack is provided with a radial jack 984 penetrating through the inner peripheral surface of the inner and outer thread pipe sections, an annular locking groove 985 which is arranged on the outer peripheral surface of the screw head and can be aligned with the axial jack and extend along the circumferential direction of the screw head, a second lock pin 986 penetrating in the radial jack and a second lock pin extension spring 987 driving the second lock pin to be inserted into the annular locking groove. The second lock pin is provided with an unlocking hole 988 aligned with the first lock pin. The inner end of the first lock pin is provided with an insertion guide head 989.

In the initial state, the internal and external threaded pipe sections are connected together with the external threaded pipe section under the action of the automatic assembling and disassembling mechanism 98 and cannot rotate continuously.

The process of sealingly attaching the second cartridge 99 to the first cartridge 90 in this embodiment is: the second pipe head is rotated to enable the internal and external threaded pipe sections to be screwed into the internal threaded pipe sections, when the internal and external threaded sections are screwed to the same positioning step 92 and abut together, the first lock pin 982 is extruded to enable the first lock pin to be retracted, the first lock pin is inserted into the unlocking hole 988 to drive the second lock pin to be retracted to separate from the annular locking groove 985, and after the first lock pin is separated from the annular locking groove 985, the external threaded pipe sections can rotate relative to the internal and external threaded pipe sections. During this process, the first pin extension spring 983 and the second pin extension spring 987 are energized. Further rotation of second tube head 99 until the male threaded tube section is fully inserted into the female threaded tube section causes seal assembly 97 to sealingly couple second tube head 99 and the first tube head together. The specific sealing process of the sealing assembly is as follows: the sealing ring 973 is inserted into the groove 971 to seal the annular sealing bladder 972, such that the annular sealing bladder deforms to seal. The annular sealing air bag and the annular groove are sealed by being bonded together through glue. Make the contact surface between sealing ring and the sealing washer be the curved surface of turn back structure under the effect of annular seal tooth 974 to play the effect that improves sealed effect.

The method for connecting the two pipelines comprises the following steps: one pipe 1 is seal welded to the other end of the first pipe head and the other pipe 2 is seal welded to the other end of the second pipe head.

Claims

1. The utility model provides a joint structure for pipeline, a serial communication port, including first tube head and second tube head, the one end of first tube head is equipped with the internal thread pipeline section and is located the inner location step of internal thread pipeline section, the one end of second tube head is equipped with the external screw thread pipeline section, threaded connection has the interior external screw thread pipeline section of cover on the external screw thread pipeline section to establish on the external screw thread pipeline section, interior external screw thread pipeline section threaded connection link together second tube head and first tube head in the internal thread pipeline section, the internal thread pipeline section with the external screw thread pipeline section is in the same place through sealed assembly sealing connection, external screw thread pipeline section and interior external screw thread pipeline section hold completely in the internal thread pipeline section, the one end of keeping away from the second tube head of external screw thread pipeline section and the one end that interior external screw thread pipeline section is close to the second tube head link together through automatic mechanism of installing and removing, The locking device comprises a first lock pin penetrating through an axial insertion hole and a first lock pin extension spring driving the first lock pin to extend out of an inner end face of the axial insertion hole, wherein a radial insertion hole penetrating through the inner peripheral surface of an inner and outer thread pipe section, an annular locking groove arranged on the outer peripheral surface of an outer thread section, capable of aligning with the radial insertion hole and extending along the circumferential direction of the outer thread section, a second lock pin penetrating through the radial insertion hole and a second lock pin extension spring driving the second lock pin to insert into the annular locking groove are arranged on the axial insertion hole, an unlocking hole aligned with the first lock pin is arranged on the second lock pin, and an insertion guide head is arranged at the inner end of the first lock pin.

2. The pipe joint structure of claim 1, wherein the outer end of the internally threaded pipe section is provided with a large diameter section to form a first sealing step, a second sealing step is formed between the externally threaded pipe section and the second pipe head, the sealing assembly comprises an annular groove formed in the second sealing step and extending along the circumferential direction of the second pipe head, an annular sealing air bag located in the annular groove, and a sealing ring formed in the first sealing step and extending along the circumferential direction of the internally threaded pipe section, the sealing ring can penetrate through the annular groove to extrude the annular sealing air bag, so that the annular sealing air bag deforms to connect the first sealing step and the second sealing step together, and the second pipe head can be inserted into the large diameter section.

3. The pipe joint structure of claim 2, wherein the sealing ring has a plurality of annular sealing teeth sequentially sleeved together, and the annular sealing teeth extend along a circumferential direction of the internally threaded pipe section.