Lining equipment insertion pipe and connecting structure thereof

Abstract

The utility model relates to a lining equipment insertion pipe and a connecting structure thereof. The insert tube for the lining equipment comprises a tube body, an inner polytetrafluoroethylene tube and an outer polytetrafluoroethylene tube, the outer polytetrafluoroethylene tube is at least adhered and fixed on the outer wall of the tube body in the lining equipment, and the inner polytetrafluoroethylene tube is adhered and fixed on the inner wall of the whole tube body. The end, located in the lining equipment, of the pipe body is provided with a polytetrafluoroethylene surfacing structure fixed to the inner polytetrafluoroethylene pipe and the outer polytetrafluoroethylene pipe in a sealed mode, air holes are formed in the part, located in the lining equipment, of the pipe body, and the inner polytetrafluoroethylene pipe and the outer polytetrafluoroethylene pipe are each provided with a penetrating hole correspondingly communicated with the air holes. Annular teflon filling structures are arranged in the air holes and the penetrating holes. The insert pipe of the lining equipment is connected with a connecting pipe of the lining equipment in a mode that a small pipe is sleeved with a large pipe. Seamless connection between the inner teflon pipe and the outer teflon pipe and the pipe body is guaranteed through a bonding process and a butt joint surfacing process. The air holes are formed in the pipe body, the penetrating holes are formed in the inner polytetrafluoroethylene pipe and the outer polytetrafluoroethylene pipe, and polytetrafluoroethylene surfacing welding is conducted in the air holes and the penetrating holes, so that the connectivity and the fitting degree of the inner polytetrafluoroethylene pipe and the outer polytetrafluoroethylene pipe and the pipe body are improved, and the service life of the insertion pipe is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe connection structures, and in particular relates to a lining equipment insertion pipe and a connection structure thereof. Background Art

[0002] As a high-tech product combining electronic materials and fine chemicals, electronic chemicals are characterized by being advanced, precise and cutting-edge. With the development of the times and the advancement of science and technology, the application fields of electronic chemicals are constantly expanding, showing huge market potential and broad development prospects.

[0003] Electronic chemical production equipment mostly uses lining equipment with PTFE lining. When the PTFE-lined insertion tube needs to be connected on the electronic chemical production equipment, the large and small mouth structures are mostly used. The insertion tube uses a steel pipe inner and outer lining structure. The steel pipe and the inner and outer linings are usually fixed by bonding. After a period of use, the steel pipe and the inner and outer linings often debond, which reduces the connectivity and fit between the steel pipe and the inner and outer linings, and affects the service life of the insertion tube. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a lining equipment insertion pipe and a connection structure thereof.

[0005] The technical solution of a lining device insertion pipe of the utility model is:

[0006] A lining equipment insertion tube comprises a tube body, an inner polytetrafluoro tube and an outer polytetrafluoro tube, wherein the outer polytetrafluoro tube is at least bonded and fixed to the outer wall of the tube body located in the lining equipment, and the inner polytetrafluoro tube is bonded and fixed to the inner wall of the entire tube body. One end of the tube body located in the lining equipment is provided with a polytetrafluoro cladding structure sealed and fixed to the inner polytetrafluoro tube and the outer polytetrafluoro tube, an air hole is opened on the tube body located in the lining equipment, and the inner polytetrafluoro tube and the outer polytetrafluoro tube are respectively provided with through holes corresponding to the air holes, and an annular polytetrafluoro filling structure is provided in the air hole and the through hole.

[0007] Furthermore, an upper flange is fixedly connected to the outer wall of one end of the tube body located outside the lining equipment, and the end of the inner polytetrafluoroethylene tube is provided with a flange that is adhesively fixed to the upper flange, and the outer edge of the flange extends to the inner edge of the fixing hole of the upper flange.

[0008] Furthermore, a lower flange for fixed connection with the lining equipment is provided on the outer wall of the tube body, and an annular polytetrafluoroethylene plate is provided on the lower side surface of the lower flange. The outer edge of the polytetrafluoroethylene plate extends to the inner edge of the fixing hole of the lower flange, and the upper end of the outer polytetrafluoroethylene tube is fixedly connected to the polytetrafluoroethylene plate.

[0009] Furthermore, the opening diameters of the air holes and the perforations are both 20 mm, and the diameter of the inner hole of the polytetrafluoroethylene filling structure is 5 mm.

[0010] The technical solution of a lining equipment insertion pipe connection structure of the utility model is:

[0011] A lining device insertion pipe connection structure, comprising a lining device and an insertion pipe;

[0012] The lining equipment is provided with a connecting pipe, and the upper end of the connecting pipe is provided with a connecting flange;

[0013] The insertion tube includes a tube body, an inner polytetrafluoro tube and an outer polytetrafluoro tube, the lower end of the tube body is inserted into the connecting tube, the outer polytetrafluoro tube is at least bonded and fixed to the outer wall of the tube body located in the connecting tube, the inner polytetrafluoro tube is bonded and fixed to the entire inner wall of the tube body, the lower end of the tube body is provided with a polytetrafluoro cladding structure sealed and fixed with the inner polytetrafluoro tube and the outer polytetrafluoro tube, an air hole is opened on the tube body located in the connecting tube, the inner polytetrafluoro tube and the outer polytetrafluoro tube are respectively provided with through holes corresponding to the air holes, the air holes and the through holes are provided with an annular polytetrafluoro filling structure, and a lower flange plate for fixedly connected to the connecting flange is provided on the outer wall of the tube body.

[0014] Furthermore, an annular polytetrafluoroethylene plate is provided on the lower side of the lower flange, the outer edge of the polytetrafluoroethylene plate extends to the inner edge of the fixing hole of the lower flange, and the upper end of the outer polytetrafluoroethylene tube is fixedly connected to the polytetrafluoroethylene plate.

[0015] Furthermore, an annular PTFE pad is provided between the PTFE plate and the connecting flange, the central hole of the PTFE pad is a step hole, the small diameter section of the step hole matches the external PTFE tube, and a sealing ring matching the external PTFE tube is provided in the large diameter section of the step hole.

[0016] Furthermore, an upper flange is fixedly connected to the outer wall of one end of the tube body outside the connecting tube, and the upper end of the inner polytetrafluoroethylene tube is provided with a flange bonded and fixed to the upper flange, and the outer edge of the flange extends to the inner edge of the fixing hole of the upper flange.

[0017] Furthermore, the opening diameters of the air holes and the perforations are both 20 mm, and the diameter of the inner hole of the polytetrafluoroethylene filling structure is 5 mm.

[0018] The utility model provides a lining equipment insertion pipe and a connection structure thereof, and the beneficial effects are:

[0019] The insertion tube of the lining equipment of the utility model is connected to the connecting tube of the lining equipment by means of a large tube sleeve small tube. The inner and outer polytetrafluoro tubes of the insertion tube are seamlessly connected to the tube body by a bonding process + a butt joint surfacing process. By opening air holes on the tube body, setting perforations on the inner and outer polytetrafluoro tubes, and surfacing polytetrafluoro in the air holes and perforations, the connectivity and fit between the inner and outer polytetrafluoro tubes and the tube body are improved, and the service life of the insertion tube is improved. In addition, by providing a polytetrafluoro pad and a sealing ring, the sealing performance of the insertion tube and the connecting tube of the lining equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the lining device insertion pipe of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the lining equipment insertion pipe connection structure of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the lining equipment in the utility model;

[0023] Figure 4 It is a structural schematic diagram of a polytetrafluoroethylene pad in a lining device insertion pipe connection structure of the utility model;

[0024] In the figure: 1. pipe body; 2. inner PTFE tube; 3. outer PTFE tube; 4. upper flange; 5. lower flange; 6. PTFE plate; 7. PTFE filling structure; 8. PTFE surfacing structure; 9. lining equipment; 10. connecting pipe; 11. connecting flange; 12. PTFE pad; 13. sealing ring; 14. gasket. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0026] The specific embodiment of the lining device insertion pipe of the utility model is as follows Figure 1 As shown, it includes a tube body 1, an inner polytetrafluoro tube 2 and an outer polytetrafluoro tube 3, and the axial directions of the tube body 1, the inner polytetrafluoro tube 2 and the outer polytetrafluoro tube 3 are defined as the up and down directions. An upper flange 4 is welded and fixed on the outer wall of the upper end of the tube body 1, and a lower flange 5 is fixedly connected to the outer wall of the tube body 1, and the lower flange 5 is used to be fixedly connected to the lining equipment.

[0027] In this embodiment, the tube body 1 is a steel tube, the inner PTFE tube 2 is bonded and fixedly connected to the inner wall of the tube body 1, the lower end of the inner PTFE tube 2 extends to the lower end of the tube body 1, the upper end of the inner PTFE tube 2 extends to the upper side of the tube body 1, the upper end of the inner PTFE tube 2 has a flange, the flange is bonded and fixed to the upper side of the upper flange 4, and the outer edge of the flange extends to the inner edge of the fixing hole of the upper flange 4. The outer PTFE tube 3 is bonded and fixed to the outer wall of the tube body 1, the outer PTFE tube 3 extends to the lower end of the tube body 1, and the upper end of the outer PTFE tube 3 extends to the lower side of the lower flange 5. An annular PTFE plate 6 is fixedly connected to the lower side of the lower flange 5, the center hole of the PTFE plate 6 is in close contact with the tube body 1, and the upper end of the outer PTFE tube 3 is fixedly connected to the lower side of the PTFE plate 6. The lower end of the tube body 1 has a PTFE cladding structure 8 that is sealed and fixed with the inner PTFE tube 2 and the outer PTFE tube 3, so as to fix the inner PTFE tube 2, the outer PTFE tube 3 and the tube body 1 and prevent the tube body 1 from being exposed. In other embodiments, the upper end of the outer PTFE tube 3 can extend to the upper end of the tube body 1.

[0028] In this embodiment, in order to enhance the connectivity and fit between the tube body 1 and the inner PTFE tube 2 and the outer PTFE tube 3, an air hole is provided on the tube body 1 at the lower side of the lower flange 5, the axis of the air hole extends in the horizontal direction, and the diameter of the air hole is 20 mm. The inner PTFE tube 2 and the outer PTFE tube 3 are respectively provided with through holes corresponding to the air holes, and the aperture of the through holes is 20 mm. By providing air holes and through holes, the air between the inner PTFE tube 2 and the outer PTFE tube 3 and the tube body 1 can be discharged when the inner PTFE tube 2 and the outer PTFE tube 3 are bonded to the tube body 1, thereby improving the fit between the inner PTFE tube 2 and the outer PTFE tube 3 and the tube body 1. The air holes and the through holes are welded with PTFE to form a PTFE filling structure 7, so as to avoid the exposure of the tube body 1 and seal and fix the tube body 1, the inner PTFE tube 2 and the outer PTFE tube 3.

[0029] The inner PTFE tube 2 and the outer PTFE tube 3 of the lining equipment insertion tube of the utility model are seamlessly connected to the inner PTFE tube 2, the outer PTFE tube 3 and the tube body 1 through the bonding process + the butt joint surfacing process. By opening air holes on the tube body 1, setting perforations on the inner PTFE tube 2 and the outer PTFE tube 3, and surfacing the air holes and the perforations with PTFE, the connectivity and fit between the inner PTFE tube 2, the outer PTFE tube 3 and the tube body 1 are improved, and the service life of the insertion tube is improved.

[0030] The specific embodiment of the lining device insertion pipe connection structure of the utility model is as follows: Figures 1 to 4 As shown, it includes a lining device 9 and an insertion pipe. The lining device 9 is provided with a connecting pipe 10. The axial direction of the connecting pipe 10 is defined as the up and down direction, and a connecting flange 11 is fixedly connected to the upper end of the connecting pipe 10. The lining device 9 and the connecting pipe 10 are provided with a polytetrafluoroethylene liner respectively, and the polytetrafluoroethylene liner in the connecting pipe extends upward to the upper side of the connecting pipe, and is flanged and pasted to the upper end surface of the connecting flange.

[0031] The insert tube includes a tube body 1, an inner polytetrafluoro tube 2 and an outer polytetrafluoro tube 3. The tube body 1 is inserted into the connecting tube 10, and the end thereof extends into the lining device, and is connected to the connecting tube of the lining device in an insert-type manner. An upper flange 4 is welded and fixed on the outer wall of the upper end of the tube body 1, and a lower flange 5 is fixedly connected to the outer wall of the tube body 1. The lower flange 5 is fixedly connected to the connecting flange 11 by bolts. The tube body 1 is a steel tube, and the inner polytetrafluoro tube 2 is bonded and fixedly connected to the inner wall of the tube body 1. The lower end of the inner polytetrafluoro tube 2 extends to the lower end of the tube body 1, and the upper end of the inner polytetrafluoro tube 2 extends to the upper side of the tube body 1. The upper end of the inner polytetrafluoro tube 2 has a flange, which is bonded and fixed to the upper side of the upper flange 4, and the outer edge of the flange extends to the inner side edge of the fixing hole of the upper flange 4. The outer PTFE tube 3 is bonded and fixed on the outer wall of the tube body 1, and the outer PTFE tube 3 extends to the lower end of the tube body 1, and the upper end of the outer PTFE tube 3 extends to the lower side of the lower flange 5. An annular PTFE plate 6 is fixedly connected to the lower side of the lower flange 5, and the center hole of the PTFE plate 6 is in close contact with the tube body 1, and the upper end of the outer PTFE tube 3 is fixedly connected to the lower side of the PTFE plate 6. The lower end of the tube body 1 has a PTFE cladding structure 8 that is sealed and fixed with the inner PTFE tube 2 and the outer PTFE tube 3, so as to fix the inner PTFE tube 2, the outer PTFE tube 3 and the tube body 1 and prevent the tube body 1 from being exposed to the outside. In other embodiments, the upper end of the outer PTFE tube 3 can extend to the upper end of the tube body 1.

[0032] In this embodiment, in order to enhance the connectivity and fit between the tube body 1 and the inner PTFE tube 2 and the outer PTFE tube 3, an air hole is provided on the tube body 1 at the lower side of the lower flange 5, the axis of the air hole extends in the horizontal direction, and the diameter of the air hole is 20 mm. The inner PTFE tube 2 and the outer PTFE tube 3 are respectively provided with through holes corresponding to the air holes, and the aperture of the through holes is 20 mm. By providing air holes and through holes, the air between the inner PTFE tube 2 and the outer PTFE tube 3 and the tube body 1 can be discharged when the inner PTFE tube 2 and the outer PTFE tube 3 are bonded to the tube body 1, thereby improving the fit between the inner PTFE tube 2 and the outer PTFE tube 3 and the tube body 1. The air holes and the through holes are welded with PTFE to form a PTFE filling structure 7, so as to avoid the exposure of the tube body 1 and seal and fix the tube body 1, the inner PTFE tube 2 and the outer PTFE tube 3.

[0033] In this embodiment, an annular PTFE pad 12 is provided between the PTFE plate 6 and the connecting flange 11. The central hole of the PTFE pad 12 is a stepped hole. The small diameter section of the stepped hole matches the outer PTFE tube 3. The large diameter section of the stepped hole has a gasket 13 that matches the outer PTFE tube 3. A gasket 14 is provided between the upper side of the connecting flange 11 and the lower side of the PTFE pad 12 to enhance the sealing between the connecting flange 11 and the PTFE pad 12.

[0034] The insertion tube of the lining equipment of the utility model is connected to the connecting tube 10 of the lining equipment by means of a large tube sleeve small tube. The inner PTFE tube 2 and the outer PTFE tube 3 of the insertion tube are seamlessly connected with the tube body 1 by a bonding process + a butt joint surfacing process. By opening air holes on the tube body 1, setting perforations on the inner PTFE tube 2 and the outer PTFE tube 3, and surfacing the air holes and the perforations with PTFE, the connectivity and fit between the inner PTFE tube 2 and the outer PTFE tube 3 and the tube body 1 are improved, and the service life of the insertion tube is improved. In addition, by setting the PTFE pad 12 and the gasket 13, the sealing performance of the insertion tube and the connecting tube 10 of the lining equipment is improved.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lining device insertion pipe, characterized in that, It includes a tube body, an inner polytetrafluoro tube and an outer polytetrafluoro tube, the outer polytetrafluoro tube is at least bonded and fixed to the outer wall of the tube body located in the lining equipment, the inner polytetrafluoro tube is bonded and fixed to the inner wall of the entire tube body, one end of the tube body located in the lining equipment is provided with a polytetrafluoro cladding structure sealed and fixed to the inner polytetrafluoro tube and the outer polytetrafluoro tube, an air hole is opened on the tube body located in the lining equipment, the inner polytetrafluoro tube and the outer polytetrafluoro tube are respectively provided with through holes corresponding to the air holes, and an annular polytetrafluoro filling structure is provided in the air hole and the through hole.

2. The lining device insertion pipe according to claim 1, characterized in that: An upper flange is fixedly connected to the outer wall of one end of the tube body located outside the lining equipment, and the end of the inner polytetrafluoroethylene tube is provided with a flange bonded and fixedly connected to the upper flange, and the outer edge of the flange extends to the inner edge of the fixing hole of the upper flange.

3. The lining device insertion pipe according to claim 2, characterized in that: A lower flange for fixed connection with the lining equipment is provided on the outer wall of the tube body, and an annular polytetrafluoroethylene plate is provided on the lower side of the lower flange. The outer edge of the polytetrafluoroethylene plate extends to the inner edge of the fixing hole of the lower flange, and the upper end of the outer polytetrafluoroethylene tube is fixedly connected to the polytetrafluoroethylene plate.

4. The lining device insertion tube according to claim 1, characterized in that The opening diameters of the air holes and the perforations are both 20 mm, and the diameter of the inner hole of the polyfluoro filling structure is 5 mm.

5. A lining equipment insertion pipe connection structure, characterized in that: Includes lining equipment and insertion tube; The lining equipment is provided with a connecting pipe, and the upper end of the connecting pipe is provided with a connecting flange; The insertion tube includes a tube body, an inner polytetrafluoro tube and an outer polytetrafluoro tube, the lower end of the tube body is inserted into the connecting tube, the outer polytetrafluoro tube is at least bonded and fixed to the outer wall of the tube body located in the connecting tube, the inner polytetrafluoro tube is bonded and fixed to the entire inner wall of the tube body, the lower end of the tube body is provided with a polytetrafluoro cladding structure sealed and fixed with the inner polytetrafluoro tube and the outer polytetrafluoro tube, an air hole is opened on the tube body located in the connecting tube, the inner polytetrafluoro tube and the outer polytetrafluoro tube are respectively provided with through holes corresponding to the air holes, the air holes and the through holes are provided with an annular polytetrafluoro filling structure, and a lower flange plate for fixedly connected to the connecting flange is provided on the outer wall of the tube body.

6. The lining equipment insertion pipe connection structure according to claim 5, characterized in that: An annular polytetrafluoroethylene plate is provided on the lower side of the lower flange, the outer edge of the polytetrafluoroethylene plate extends to the inner edge of the fixing hole of the lower flange, and the upper end of the outer polytetrafluoroethylene tube is fixedly connected to the polytetrafluoroethylene plate.

7. The lining equipment insertion pipe connection structure according to claim 6, characterized in that: An annular PTFE pad is provided between the PTFE plate and the connecting flange. The central hole of the PTFE pad is a stepped hole. The small diameter section of the stepped hole matches the external PTFE tube. A sealing ring matching the external PTFE tube is provided in the large diameter section of the stepped hole.

8. The lining equipment insertion pipe connection structure according to claim 5, characterized in that: An upper flange is fixedly connected to the outer wall of one end of the tube body outside the connecting tube, and a flange is provided on the upper end of the inner polytetrafluoroethylene tube that is adhesively fixed to the upper flange, and the outer edge of the flange extends to the inner edge of the fixing hole of the upper flange.

9. The lining equipment insertion pipe connection structure according to claim 5, characterized in that: The opening diameters of the air holes and the perforations are both 20 mm, and the diameter of the inner hole of the polyfluoro filling structure is 5 mm.

Images