Conduit teflon lining connecting piece with modular disassembly and assembly structure

Abstract

The invention relates to the technical field of conduit polytetrafluoroethylene linings, in particular to a conduit polytetrafluoroethylene lining connecting piece with a modular disassembly and assembly structure, which comprises a conduit body and an adapting mechanism, the adapting mechanism is arranged on the inner side of the conduit body, and a contact mechanism is arranged on the inner side of the adapting mechanism. An adjusting air pipe is arranged on the side, away from the contact mechanism, of the inner side of the adapting mechanism, the adapting mechanism comprises a positioning outer cylinder sleeve and a limiting inner cylinder set, the positioning outer cylinder sleeve is arranged on the inner side of the catheter body, the limiting inner cylinder set is arranged on the inner side of the positioning outer cylinder sleeve, and the contact mechanism comprises a clamping clamping sleeve and an adapting soft sleeve. And the clamping card sleeve is arranged on the inner side of the limiting inner cylinder group. The guide pipe teflon lining connecting piece with the modular disassembly and assembly structure has the advantages that the guide pipe teflon lining connecting piece is of a structure suitable for different shapes of teflon linings, so that stable support cannot be provided when the guide pipe needs to be provided with the teflon linings of different shapes, and the flexibility is reduced when the guide pipe is provided with the teflon linings of different types.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of catheter tetrafluoro lining, in particular to a catheter tetrafluoro lining connecting piece with a modular disassembly structure. BACKGROUND

[0002] It is known that in the fields of fluid transportation, chemical reaction, electronic semiconductor, etc., connecting pieces are often used to realize the connection of fluid or gas passage between different pipelines and equipment components to ensure stable medium transmission. As a key component for adapting catheters, catheter connecting pieces are widely used in various scenarios requiring precise flow control. In order to improve the resistance of connecting pieces to harsh working conditions such as strong corrosion and high temperature, and to meet the chemical stability and sealing requirements during the transmission of special media, the industry has developed catheter tetrafluoro lining connecting pieces. The connecting piece has a metal or other high-strength material as a base, and a polytetrafluoroethylene material is lined in the key parts such as the cavity and the sealing surface inside the base that contacts the medium. This not only retains the structural strength of the base to ensure the reliability of the connection, but also takes advantage of the excellent corrosion resistance, high and low temperature resistance, and low friction coefficient of polytetrafluoroethylene to adapt to various harsh transmission environments and ensure the long-term stable operation of the catheter system.

[0003] Through retrieval, a lining pipe is disclosed in Chinese patent publication No. CN109167328B. The patent includes a pipe body and an insulation member arranged on the outer wall of the pipe body. The pipe body includes multiple pipe segments connected in sequence to form the pipe body. The pipe segments are C-shaped structures that can be installed and disassembled by pulling the pipe body. During installation of the lining pipe, only one end of the pipe body needs to be pulled to achieve installation of the lining pipe. During disassembly of the lining pipe, only one end of the pipe body needs to be held and the pipe body is pulled in the opposite direction from the other end of the pipe body to achieve disassembly of the lining pipe. At the same time, the insulation member collapses from the end close to the pipe body to the other end close to the pipe body until the disassembly of the lining pipe is completed. The operation is simple, facilitating the installation and disassembly of the lining pipe, thereby improving the user's experience. The lining pipe also includes an insulation member arranged on the outer wall of the pipe body. The insulation member prevents the cable from being damaged and leaking electricity, avoiding electric shock for the operator and improving the safety of the cable.

[0004] When installing tetrafluoro lining on a catheter, a connecting piece is used to install the tetrafluoro lining in the catheter. The existing technology has the problem that due to the lack of structures that adapt to different tetrafluoro lining shapes, it cannot provide stable support when the catheter needs to be installed with different tetrafluoro lining shapes, reducing the flexibility of the catheter when installing different types of tetrafluoro lining. SUMMARY

[0005] (I) Technical problems solved In view of the deficiencies of the prior art, the present application provides a guide pipe tetrafluoro lining connector with a modular disassembly structure, which has a structure suitable for different tetrafluoro lining shapes, and thus cannot provide stable support when the guide pipe needs to be installed with different tetrafluoro linings, thereby reducing the flexibility of the guide pipe when installing different types of tetrafluoro linings.

[0006] (II) Technical solutions The above technical purpose of the present application is achieved by the following technical solution: a guide pipe tetrafluoro lining connector with a modular disassembly structure, comprising a guide pipe body and an adaptation mechanism, the adaptation mechanism being arranged on the inner side of the guide pipe body, the inner side of the adaptation mechanism being provided with a contact mechanism, the side of the inner side of the adaptation mechanism away from the contact mechanism being provided with an adjusting air pipe, the adaptation mechanism comprising a positioning outer sleeve and a limiting inner sleeve group, the positioning outer sleeve being arranged on the inner side of the guide pipe body, the limiting inner sleeve group being arranged on the inner side of the positioning outer sleeve, the contact mechanism comprising a clamping sleeve and an adaptation sleeve, the clamping sleeve being arranged on the inner side of the limiting inner sleeve group, the adaptation sleeve being arranged on the inner side of the clamping sleeve, the adjusting air pipe comprising a spiral expansion air pipe, an inflation pipe head and a threaded connecting pipe.

[0007] By adopting the above technical solution, the guide pipe body is a fluid guide pipe in the prior art, and the tetrafluoro lining can be installed through the connecting structure composed of the adaptation mechanism, the contact mechanism and the adjusting air pipe, and the spacing between the positioning outer sleeve and the limiting inner sleeve group can be increased by filling the adjusting air pipe with gas, so that the limiting inner sleeve group drives the contact mechanism to move towards the tetrafluoro lining, thereby achieving the effect of clamping and fixing the tetrafluoro lining.

[0008] The present application further provides that: the positioning outer sleeve comprises an outer sleeve body, a positioning sleeve and a guide spiral groove, the positioning sleeve is connected to the inner side of the guide pipe body, the outer sleeve body is connected to the inner side of the positioning sleeve, and the guide spiral groove is arranged on the inner side of the positioning sleeve.

[0009] By adopting the above technical solution, the positioning outer sleeve is arranged, the outer sleeve body can form a structure for limiting the spiral expansion air pipe together with the positioning sleeve and the guide spiral groove, the outer sleeve body can be limited on the inner side of the guide pipe body by connecting the positioning sleeve and the guide pipe body, and the outer sleeve body can limit the spiral expansion air pipe by passing through the guide spiral groove, so that the spiral expansion air pipe presents a spiral shape in the guide spiral groove.

[0010] The present application further provides that: the spiral expansion air pipe is connected to the inner side of the guide spiral groove, the inflation pipe head is connected to the top of the spiral expansion air pipe, the threaded connecting pipe is connected to the inner side of the inflation pipe head, and the inner side of the spiral expansion air pipe is connected to the surface of the limiting inner sleeve group.

[0011] By the azimuth adjusting structure composed of the spiral expansion air pipe and the inflation pipe head and the threaded connecting pipe, the azimuth of the inner cylinder plate can be adjusted, when the spiral expansion air pipe passes through the air delivery structure connected with the inflation pipe head, air can be sent into the spiral expansion air pipe, so that the spiral expansion air pipe expands along the guide spiral groove, and the spiral expansion air pipe can drive the inner cylinder plate to move at the same time, since the spiral expansion pipe is arranged in the guide spiral groove in a spiral shape, the inner cylinder plate can move away from the outer cylinder body to the axis of the guide pipe body, so that the transmission required for clamping the tetrafluoro lining by the clamping sleeve plate can be provided, the threaded connecting pipe can connect the inflation pipe head on the current spiral expansion air pipe with the inflation pipe head on another spiral expansion air pipe, so that the multiple spiral expansion air pipes are connected as a whole, when one of the spiral expansion air pipes is filled with gas to expand, the gas can be provided for the spiral expansion air pipe connected with the gas, so that all the spiral expansion air pipes expand synchronously, and the effect that the inner cylinder plate is synchronously driven to move to the axis of the guide pipe body can be achieved.

[0012] The application further provides that the limiting inner cylinder group comprises the inner cylinder plate, the positioning spiral groove and the buffer groove, the inner side of the spiral expansion air pipe is provided with the inner cylinder plate, the positioning spiral groove is arranged on the surface of the inner cylinder plate, and the inner side of the positioning spiral groove is connected with the inner side of the spiral expansion air pipe, and six buffer grooves are arranged on the inner side of the inner cylinder plate.

[0013] By arranging the limiting inner cylinder group, the inner cylinder plate can form a limiting structure with the positioning spiral groove and the buffer groove, the clamping sleeve plate can be supported and limited, and the inner cylinder plate can drive the clamping sleeve plate to move close to and away from the axis of the guide pipe body along with the expansion and contraction of the spiral expansion air pipe, the buffer groove can keep a space between each inner cylinder plate, so that the effect that the subsequent arc-shaped soft plate clamps and connects the tetrafluoro lining can be achieved.

[0014] The application further provides that the top of the threaded connecting pipe is connected with a sealing cover, the surface of the sealing cover is provided with anti-skid lines, and the bottom of the sealing cover is provided with a rubber sealing ring.

[0015] By arranging the sealing cover, the inflation pipe head at the top of the spiral expansion air pipe can be sealed when the threaded connecting pipe is connected, so that the effect that the gas is kept in the spiral expansion air pipe can be achieved, and the spiral expansion air pipe can keep the current expansion state, since the sealing cover can be disassembled from the threaded connecting pipe, the gas storage in the spiral expansion air pipe can be changed, so that the current expansion state of the spiral expansion air pipe can be changed, and the effect that the subsequent clamping of different types of tetrafluoro lining can be adapted.

[0016] The present invention is further configured such that: the output end of the bottom of the spiral expansion tube is connected to an assembly tube head, and the bottom of the inner side of the assembly tube head is connected to a threaded connecting tube.

[0017] By adopting the above technical solution and setting up an assembly pipe head, when the spiral expansion pipe is connected to another spiral expansion pipe through a threaded connecting pipe, the stability of the connection between the threaded connecting pipe and the spiral expansion pipe can be further increased through the auxiliary connection of the assembly pipe head and the threaded connecting pipe. Since the connection method of the assembly pipe head is added, the airtightness of the connection between the threaded connecting pipe and the spiral expansion pipe can be further increased.

[0018] The present invention is further configured such that: the clamping sleeve includes a sleeve plate, an arc-shaped clamping plate and an arc-shaped flexible plate, the sleeve plate is welded to the inner side of the inner cylinder plate, the arc-shaped clamping plate is snapped into the inner side of the sleeve plate, and the arc-shaped flexible plate is bonded to the inner side of the arc-shaped clamping plate.

[0019] By adopting the above technical solution, and by setting a clamping sleeve, the sleeve plate can form a modularly detachable PTFE liner limiting structure with the arc-shaped clamping plate and the arc-shaped flexible plate. When the arc-shaped clamping plate is inserted into the sleeve plate, the arc-shaped clamping plate moves with the movement of the sleeve plate, causing the arc-shaped flexible plate to move towards the axis of the conduit body, thereby achieving the effect of clamping the PTFE liner located at the axis of the conduit body. Furthermore, by removing one of the arc-shaped clamping plates from the sleeve plate, the effect of removing a single arc-shaped clamping plate can be achieved, allowing for the independent replacement of the arc-shaped clamping plate that needs to be replaced.

[0020] The present invention is further configured such that: the adaptable soft sleeve includes a rubber soft sleeve, a buffer airbag and a corrugated sleeve, the rubber soft sleeve is snapped onto the inner side of the arc-shaped clamping plate, the buffer airbag is disposed on the inner side of the rubber soft sleeve, and the corrugated sleeve is welded to the inner side of the rubber soft sleeve away from the buffer airbag.

[0021] By adopting the above technical solution, and by setting an adaptive soft sleeve, the rubber soft sleeve can form a structure for cushioning the ferrule plates together with the buffer airbag and the corrugated sleeve. Each ferrule plate is connected to each other by the rubber soft sleeve. When the ferrule plate is squeezed by moving towards the axis of the catheter body, the internal buffer airbag and the external corrugated sleeve provide adaptive cushioning. This can provide a thrust for the ferrule plate to return to its original position. Furthermore, the softness of the rubber soft sleeve can provide cushioning, making it easier to continuously provide thrust for the ferrule plate when it is replaced, thus increasing the stability of the ferrule plate during installation after replacement.

[0022] The present invention is further configured such that: a connecting sleeve is welded to the side of the arc-shaped clamping plate near the rubber soft sleeve, the connecting sleeve is T-shaped, and the surface of the connecting sleeve is engaged with the rubber soft sleeve.

[0023] The technical scheme is adopted, the rubber sleeve can be replaced when needed, the rubber sleeve is taken off from the T-shaped connecting sleeve and then a new rubber sleeve is reloaded, the connecting sleeve guides and limits the reloaded rubber sleeve, and the rubber sleeve is conveniently replaced.

[0024] The application is further provided as follows: the arc surface soft plate is bonded with a limiting inner sleeve on the side away from the arc surface clamping plate, and the inner side of the limiting inner sleeve is provided with anti-skid lines.

[0025] The technical scheme is adopted, the rubber sleeve can be replaced when needed, the rubber sleeve is taken off from the T-shaped connecting sleeve and then a new rubber sleeve is reloaded, the connecting sleeve guides and limits the reloaded rubber sleeve, and the rubber sleeve is conveniently replaced.

[0026] (Three) beneficial effects Compared with the prior art, the application provides a catheter tetrafluoro lining connector with a modular disassembly and assembly structure, which has the following beneficial effects: The catheter tetrafluoro lining connector with a modular disassembly and assembly structure is provided with an adapting mechanism and an adjusting air pipe, the spiral expansion air pipe is connected with the guiding spiral groove in the outer cylinder body and the positioning spiral groove on the surface of the inner cylinder plate, each outer cylinder body and inner cylinder plate are connected as a whole when the spiral expansion air pipe is connected with another spiral expansion air pipe through the threaded connecting pipe in the inflation pipe head, gas is transmitted to each spiral expansion air pipe through one of the spiral expansion air pipes when one of the spiral expansion air pipes is inflated through the inflation pipe head, each spiral expansion air pipe is supported by the guiding spiral groove in the outer cylinder body and starts to expand, each inner cylinder plate is synchronously pushed to the catheter body axis, each inner cylinder plate drives the sleeve plate to move to the catheter body axis, and the clamping sleeve adapts to the shape of the tetrafluoro lining required to be connected. The application discloses a catheter tetrafluoro lining connecting piece with a modular dismounting structure. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the whole structure in the application; Figure 2 It is a schematic diagram of the catheter body and the adapting mechanism in the application; Figure 3 It is a schematic diagram of the adapting mechanism structure in the application; Figure 4 It is a schematic diagram of the positioning outer cylinder sleeve structure in the application; Figure 5 It is a schematic diagram of the limiting inner cylinder group structure in the application; Figure 6 It is a schematic diagram of the adjusting air pipe structure in the application; Figure 7 It is a schematic diagram of the assembled pipe head structure in the application; Figure 8 It is a schematic diagram of the contact mechanism structure in the application; Figure 9 It is a schematic diagram of the clamping sleeve and the adapting soft sleeve structure in the application.

[0028] In the figure: 1, the conduit body; 2, the adaptive mechanism; 21, the positioning outer sleeve; 211, the outer sleeve body; 212, the positioning sleeve; 213, the guide helical groove; 22, the limiting inner sleeve group; 221, the inner sleeve plate; 222, the positioning helical groove; 223, the buffer groove; 3, the contact mechanism; 31, the clamping sleeve; 311, the sleeve plate; 312, the arc clamping plate; 313, the arc soft plate; 32, the adaptive soft sleeve; 321, the rubber soft sleeve; 322, the buffer air bag; 323, the corrugated sleeve; 4, the adjusting air pipe; 41, the helical expansion air pipe; 42, the inflation pipe head; 43, the threaded connecting pipe; 5, the sealing cover; 6, the assembled pipe head; 7, the connecting sleeve; 8, the limiting inner sleeve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0030] Embodiment 1 Please refer to Figures 1-7 A conduit tetrafluoro lining connector with a modular disassembly structure, comprising a conduit body 1 and an adaptive mechanism 2, the adaptive mechanism 2 is arranged on the inner side of the conduit body 1, the inner side of the adaptive mechanism 2 is provided with a contact mechanism 3, the adaptive mechanism 2 comprises a positioning outer sleeve 21 and a limiting inner sleeve group 22, the positioning outer sleeve 21 is arranged on the inner side of the conduit body 1, the limiting inner sleeve group 22 is arranged on the inner side of the positioning outer sleeve 21, the contact mechanism 3 comprises a clamping sleeve 31 and an adaptive soft sleeve 32, the clamping sleeve 31 is arranged on the inner side of the limiting inner sleeve group 22, the adaptive soft sleeve 32 is arranged on the inner side of the clamping sleeve 31, by arranging the adaptive mechanism 2 and the adjusting air pipe 4, by connecting the helical expansion air pipe 41 with the guide helical groove 213 in the outer sleeve body 211 and the positioning helical groove 222 on the surface of the inner sleeve plate 221, when the helical expansion air pipe 41 is connected with another helical expansion air pipe 41 through the threaded connecting pipe 43 in the inflation pipe head 42, each outer sleeve body 211 and the inner sleeve plate 221 can be connected as a whole, so that when one of the helical expansion air pipes 41 is filled with gas through the inflation pipe head 42, the gas can be transmitted to each helical expansion air pipe 41 through one of the helical expansion air pipes 41, each helical expansion air pipe 41 takes the guide helical groove 213 in the outer sleeve body 211 as a support point and starts to expand, so as to synchronously push each inner sleeve plate 221 to the axial line of the conduit body 1, thus each inner sleeve plate 221 drives the sleeve plate 311 to move to the axial line of the conduit body 1, so as to make the clamping sleeve 31 adapt to the shape of the tetrafluoro lining to be connected.

[0031] The positioning outer sleeve 21 comprises an outer sleeve body 211, a positioning sleeve 212 and a guide spiral groove 213. The positioning sleeve 212 is clamped on the inner side of the catheter body 1. The outer sleeve body 211 is clamped on the inner side of the positioning sleeve 212. The guide spiral groove 213 is arranged on the inner side of the positioning sleeve 212. By arranging the positioning outer sleeve 21, the outer sleeve body 211 can be limited by the positioning sleeve 212 and the guide spiral groove 213. The outer sleeve body 211 can be limited on the inner side of the catheter body 1 by clamping the positioning sleeve 212 on the catheter body 1. The outer sleeve body 211 can be limited by the guide spiral groove 213. The spiral expansion air pipe 41 can be spirally arranged in the guide spiral groove 213.

[0032] The spiral expansion air pipe 41 is clamped on the inner side of the guide spiral groove 213. The inflation pipe head 42 is connected to the top of the spiral expansion air pipe 41. The threaded connecting pipe 43 is connected to the inner side of the inflation pipe head 42. The inner side of the spiral expansion air pipe 41 is clamped on the surface of the limiting inner cylinder group 22. The orientation of the inner cylinder plate 221 can be adjusted by the orientation adjusting structure composed of the spiral expansion air pipe 41, the inflation pipe head 42 and the threaded connecting pipe 43. When the spiral expansion air pipe 41 is connected to the air conveying structure through the inflation pipe head 42, air can be sent into the spiral expansion air pipe 41. The spiral expansion air pipe 41 can expand along the guide spiral groove 213. The spiral expansion air pipe 41 can drive the inner cylinder plate 221 to move at the same time. Since the spiral expansion pipe is spirally arranged in the guide spiral groove 213, the inner cylinder plate 221 can move away from the outer sleeve body 211 to the axis of the catheter body 1. Therefore, the transmission required for clamping the tetrafluoroethylene lining can be provided for the clamping sleeve plate 311. The threaded connecting pipe 43 can connect the inflation pipe head 42 on the current spiral expansion air pipe 41 with the inflation pipe head 42 on another spiral expansion air pipe 41. The effect of connecting multiple spiral expansion air pipes 41 into one whole can be achieved. When one of the spiral expansion air pipes 41 is filled with gas and expanded, the gas can be provided for the spiral expansion air pipe 41 connected to the gas. All the spiral expansion air pipes 41 can be expanded synchronously. The effect of synchronously driving the inner cylinder plate 221 to move to the axis of the catheter body 1 can be achieved.

[0033] The limiting inner cylinder group 22 includes an inner cylinder plate 221, a positioning spiral groove 222 and a buffer groove 223, is arranged on the inner side of the spiral expansion air pipe 41, the positioning spiral groove 222 is arranged on the surface of the inner cylinder plate 221, the inner side of the positioning spiral groove 222 is connected with the inner side of the spiral expansion air pipe 41, six buffer grooves 223 are arranged on the inner side of the inner cylinder plate 221 respectively, by arranging the limiting inner cylinder group 22, the inner cylinder plate 221 can form a limiting structure with the positioning spiral groove 222 and the buffer groove 223, can provide support and limiting for the sleeve plate 311, and by connecting the positioning spiral groove 222 with the spiral expansion air pipe 41, the inner cylinder plate 221 can drive the sleeve plate 311 to approach and move away from the axis of the catheter body 1 with the expansion and contraction of the spiral expansion air pipe 41, the buffer groove 223 can keep a space between each inner cylinder plate 221, so that the subsequent arc surface soft plate 313 can realize the effect of clamping and connecting the Teflon lining.

[0034] The top of the threaded connecting pipe 43 is threadedly connected with a sealing cover 5, the surface of the sealing cover 5 is provided with anti-skid lines, and the bottom of the sealing cover 5 is provided with a rubber sealing ring. By arranging the sealing cover 5, the inflation pipe head 42 at the top of the spiral expansion air pipe 41 can be sealed when connected with the threaded connecting pipe 43, so that the gas can be kept in the spiral expansion air pipe 41, and the spiral expansion air pipe 41 can keep the current expansion state. Since the sealing cover 5 can be disassembled from the threaded connecting pipe 43, the amount of gas in the spiral expansion air pipe 41 can be easily changed, so as to change the current expansion state of the spiral expansion air pipe 41, which is helpful to adapt to the subsequent clamping effect of different types of Teflon lining.

[0035] The bottom of the threaded connecting pipe 43 is connected with an assembly pipe head 6, and the bottom of the inner side of the assembly pipe head 6 is connected with the threaded connecting pipe 43. By arranging the assembly pipe head 6, when the spiral expansion air pipe 41 is connected with another spiral expansion air pipe 41 through the threaded connecting pipe 43, the stability of the connection between the threaded connecting pipe 43 and the spiral expansion air pipe 41 can be further increased by the auxiliary connection of the assembly pipe head 6 and the threaded connecting pipe 43. Since the connection mode of the assembly pipe head 6 is additionally increased, the airtightness of the connection between the threaded connecting pipe 43 and the spiral expansion air pipe 41 can be further increased.

[0036] The working principle of this embodiment is as follows: first, when the contact mechanism 3 needs to adapt to the current tetrafluoro liner, the spiral inflation air pipe 41 is connected to another spiral inflation air pipe 41 through the threaded connecting pipe 43 until it is connected to the required number of spiral inflation air pipes 41, then the tetrafluoro liner is placed into the arc soft plate 313, then the inflation pipe head 42 on the spiral inflation air pipe 41 is connected to the inflation equipment, then the inflation equipment is used to inflate the spiral inflation air pipe 41, and the spiral inflation air pipe 41 will start to expand as the gas is filled, at this time the threaded connecting pipe 43 will drive the inner cylinder plate 221 to move to the axis of the guide pipe body 1, the clamping sleeve plate 311 will drive the arc clamping plate 312 to move to the axis of the guide pipe body 1 along with the inner cylinder plate 221, until the arc clamping plate 312 drives the arc soft plate 313 to completely clamp the tetrafluoro liner at the axis of the guide pipe body 1.

[0037] Embodiment 2 Reference Figures 8-9 The guide pipe tetrafluoro liner connecting piece with a modular disassembly structure further comprises an adjusting air pipe 4, wherein the side of the adapting mechanism 2 away from the contact mechanism 3 is provided with the adjusting air pipe 4, the adjusting air pipe 4 comprises a spiral inflation air pipe 41, an inflation pipe head 42 and a threaded connecting pipe 43, by providing the contact mechanism 3, the clamping sleeve 31 can form a tetrafluoro liner limiting structure with the adapting soft sleeve 32 which moves along with the inner cylinder plate 221, when the clamping sleeve plate 311 moves to the tetrafluoro liner at the axis of the guide pipe body 1 along with the inner cylinder plate 221, each clamping sleeve plate 311 will drive the arc clamping plate 312 to move the arc soft plate 313 to the tetrafluoro liner, until the tetrafluoro liner is clamped between each arc soft plate 313, realizing the connecting effect of the tetrafluoro liner, and the rubber soft sleeve 321 can adapt to the extrusion generated when the arc clamping plate 312 moves by the deformation of the internal buffer air bag 322 and the surface corrugated sleeve 323, and provide a resetting thrust for each arc clamping plate 312, when a single arc clamping plate 312 needs to be replaced, the arc clamping plate 312 to be replaced is pulled out of the clamping sleeve plate 311, the replaced arc clamping plate 312 is inserted into the clamping sleeve plate 311, realizing the replacement of the arc clamping plate 312, and when the arc clamping plate 312 is inserted into the clamping sleeve plate 311, the rubber soft sleeve 321 provides further thrust to the replaced arc clamping plate 312 by the resetting thrust of the buffer air bag 322 and the corrugated sleeve 323, extruding the arc clamping plate 312 between each rubber soft sleeve 321, increasing the stability of the arc clamping plate 312 when connected to the clamping sleeve plate 311, and improving the stability of the tetrafluoro liner connection.

[0038] The clamping sleeve 31 comprises a sleeve plate 311, an arc clamping plate 312 and an arc soft plate 313. The sleeve plate 311 is welded on the inner side of the inner cylinder plate 221. The arc clamping plate 312 is clamped on the inner side of the sleeve plate 311. The arc soft plate 313 is bonded on the inner side of the arc clamping plate 312. By arranging the clamping sleeve 31, the sleeve plate 311 can be modularly disassembled with the arc clamping plate 312 and the arc soft plate 313 to form a four-fluorine lining limiting structure. When the arc clamping plate 312 is inserted into the sleeve plate 311, the arc clamping plate 312 can be moved along with the sleeve plate 311 to drive the arc soft plate 313 to move to the axis of the catheter body 1, thereby achieving the effect of clamping the four-fluorine lining at the axis of the catheter body 1. In addition, one of the arc clamping plates 312 can be removed from the sleeve plate 311, thereby achieving the effect of removing a single arc clamping plate 312 and independently replacing the arc clamping plate 312 that needs to be replaced.

[0039] The adaptive sleeve 32 comprises a rubber sleeve 321, a buffer air bag 322 and a corrugated sleeve 323. The rubber sleeve 321 is clamped on the inner side of the arc clamping plate 312. The buffer air bag 322 is arranged on the inner side of the rubber sleeve 321. The corrugated sleeve 323 is welded on the inner side of the rubber sleeve 321 away from the buffer air bag 322. By arranging the adaptive sleeve 32, the rubber sleeve 321 can be connected with the buffer air bag 322 and the corrugated sleeve 323 to form a structure for buffering the sleeve plate 311. When the sleeve plate 311 is extruded to move to the axis of the catheter body 1, the internal buffer air bag 322 and the external corrugated sleeve 323 can be adaptively buffered to provide a restoring force to the sleeve plate 311. In addition, the rubber sleeve 321 can be buffered by its soft characteristics to continuously provide a restoring force to the sleeve plate 311 during subsequent replacement of the sleeve plate 311, thereby increasing the stability of the sleeve plate 311 during installation after replacement.

[0040] The arc clamping plate 312 is welded with a connecting sleeve 7 on the side close to the rubber sleeve 321. The connecting sleeve 7 is T-shaped. The surface of the connecting sleeve 7 is clamped with the rubber sleeve 321. By arranging the connecting sleeve 7, the rubber sleeve 321 can be removed from the T-shaped connecting sleeve 7 and then reloaded with a new rubber sleeve 321 when the rubber sleeve 321 needs to be replaced. The connecting sleeve 7 can guide and limit the reloaded rubber sleeve 321, thereby facilitating the replacement of the rubber sleeve 321.

[0041] The arc surface soft plate 313 is bonded with a limiting inner sleeve 8 on the side away from the arc surface clamping plate 312, and the inner side of the limiting inner sleeve 8 is provided with anti-skid lines. By arranging the limiting inner sleeve 8, when the arc surface soft plate 313 clamps the Teflon inner liner, the limiting inner sleeve 8 is in contact with the Teflon inner liner, and the anti-skid lines on the inner side of the limiting inner sleeve 8 can further increase the stability when the Teflon inner liner is contacted, thereby improving the stability when the arc surface soft plate 313 clamps the Teflon inner liner.

[0042] The working principle of the embodiment is as follows: first, when the arc surface clamping plate 312 and the rubber soft sleeve 321 need to be replaced, the arc surface clamping plate 312 to be replaced is pulled out from the clamping sleeve plate 311, and then the replaced arc surface clamping plate 312 is inserted into the clamping sleeve plate 311 again until the rubber soft sleeve 321 is limited in the clamping sleeve plate 311 by the pushing force applied by the buffer air bag 322 to the corrugated sleeve 323, and then the rubber soft sleeve 321 to be replaced is pulled out from the clamping sleeve plate 311, and then the replaced rubber soft sleeve 321 is inserted along the clamping sleeve plate 311 until the rubber soft sleeve 321 is completely inserted into the clamping sleeve plate 311.

[0043] The embodiment is only an explanation of the present application, and is not a limitation of the present application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification. Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A catheter tetrafluoro lining connecting piece with a modular dismounting structure, comprising a catheter body (1) and an adaptation mechanism (2), characterized in that: The adaptation mechanism (2) is arranged inside the catheter body (1), the inner side of the adaptation mechanism (2) is provided with a contact mechanism (3), the inner side of the adaptation mechanism (2) away from the contact mechanism (3) is provided with an adjusting air pipe (4), the adaptation mechanism (2) comprises a positioning outer sleeve (21) and a limiting inner sleeve group (22), the positioning outer sleeve (21) is arranged inside the catheter body (1), the limiting inner sleeve group (22) is arranged inside the positioning outer sleeve (21), the contact mechanism (3) comprises a clamping sleeve (31) and an adaptation soft sleeve (32), the clamping sleeve (31) is arranged inside the limiting inner sleeve group (22), the adaptation soft sleeve (32) is arranged inside the clamping sleeve (31), and the adjusting air pipe (4) comprises a spiral expansion air pipe (41), an inflation pipe head (42) and a threaded connecting pipe (43).

2. The modular dismountable structure of the catheter tetrafluoro lining connecting piece according to claim 1, characterized in that: The positioning outer sleeve (21) comprises an outer sleeve body (211), a positioning sleeve (212) and a guide spiral groove (213), the positioning sleeve (212) is connected to the inner side of the catheter body (1), the outer sleeve body (211) is connected to the inner side of the positioning sleeve (212), and the guide spiral groove (213) is arranged on the inner side of the positioning sleeve (212).

3. The modular connection for a catheter tetrafluoroethylene inner liner according to claim 2, wherein: The spiral expansion air pipe (41) is connected to the inner side of the guide spiral groove (213), the inflation pipe head (42) is communicated with the top of the spiral expansion air pipe (41), the threaded connecting pipe (43) is communicated with the inner side of the inflation pipe head (42), and the inner side of the spiral expansion air pipe (41) is connected to the surface of the limiting inner sleeve group (22).

4. The modular connection for a conduit tetrafluoroethylene inner liner according to claim 3, wherein: The limiting inner sleeve group (22) comprises an inner sleeve plate (221), a positioning spiral groove (222) and a buffer groove (223), the inner sleeve plate (221) is arranged on the inner side of the spiral expansion air pipe (41), the positioning spiral groove (222) is arranged on the surface of the inner sleeve plate (221), the inner side of the positioning spiral groove (222) is connected to the inner side of the spiral expansion air pipe (41), and six buffer grooves (223) are arranged on the inner side of the inner sleeve plate (221).

5. The modular connection for a conduit tetrafluoroethylene inner liner according to claim 3, wherein: The top of the threaded connecting pipe (43) is threadedly connected with a sealing cover (5), the surface of the sealing cover (5) is provided with anti-skid lines, and the bottom of the sealing cover (5) is provided with a rubber sealing ring.

6. The modular connection for a conduit tetrafluoroethylene inner liner according to claim 3, wherein: The output end of the bottom of the spiral expansion air pipe (41) is communicated with an assembling pipe head (6), and the bottom of the inner side of the assembling pipe head (6) is communicated with the threaded connecting pipe (43).

7. The modular connection for a conduit tetrafluoroethylene inner liner according to claim 4, wherein: The clamping sleeve (31) comprises a sleeve plate (311), an arc clamping plate (312) and an arc soft plate (313), the sleeve plate (311) is welded to the inner side of the inner sleeve plate (221), the arc clamping plate (312) is connected to the inner side of the sleeve plate (311), and the arc soft plate (313) is bonded to the inner side of the arc clamping plate (312).

8. The modular conduit and four-fluorine inner liner connecting piece according to claim 7, characterized in that: The adaptive sleeve (32) comprises a rubber sleeve (321), a buffer air bag (322) and a corrugated sleeve (323), the rubber sleeve (321) is clamped on the inner side of the arc clamping plate (312), the buffer air bag (322) is arranged on the inner side of the rubber sleeve (321), and the corrugated sleeve (323) is welded on the inner side of the rubber sleeve (321) away from the buffer air bag (322).

9. The modular conduit and four-fluorine inner liner connecting piece according to claim 8, characterized in that: The arc clamping plate (312) is welded with a connecting clamping sleeve (7) on the side close to the rubber sleeve (321), the connecting clamping sleeve (7) is T-shaped, and the surface of the connecting clamping sleeve (7) is clamped with the rubber sleeve (321).

10. The modular dismountable structure of the catheter tetrafluoro lining connecting piece according to claim 7, characterized in that: The arc soft plate (313) is adhesively connected with a limiting inner sleeve (8) on the side away from the arc clamping plate (312), and the inner side of the limiting inner sleeve (8) is provided with anti-skid lines.

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