Seamless stainless steel tube for lithium carbonate production

Abstract

The invention relates to a seamless stainless steel pipe for lithium carbonate production. The seamless stainless steel pipe is provided with oppositely-arranged pipe bodies and a connecting pipe. Connecting insertion pipes are arranged at the two ends of the connecting pipe, connecting insertion grooves are formed in the end faces of the pipe body, a plurality of connecting assemblies are arranged between the connecting insertion pipes and the connecting insertion grooves, each connecting assembly comprises a rotating base, a right-angle rotating rod, a lifting through groove and a lifting lock rod, a lock groove is formed in each lifting lock rod, and limiting sliding blocks are arranged at the two ends of each lifting lock rod; limiting sliding grooves are formed in the two sides of the lifting through groove, limiting bottom grooves are formed in the limiting sliding grooves, limiting sliding rods are arranged in the limiting bottom grooves in a sliding mode, limiting pressing blocks are arranged on the limiting sliding rods, reset springs are arranged in the limiting bottom grooves, and the two ends of the reset springs are fixedly connected with the limiting sliding rods and the limiting bottom grooves correspondingly. And each pipe body is connected with the connecting pipe through the matching of the connecting insertion pipe and the connecting insertion groove, the pressing of each lifting lock rod on the second rod body and the matching of the lock block on the first rod body and the lock groove. The device is ingenious in structure, convenient and practical.

Description

Technical Field

[0001] The invention relates to the field of lithium carbonate production, in particular to a seamless stainless steel pipe for lithium carbonate production. Background Art

[0002] Lithium carbonate is a colorless monoclinic crystal or white powder with a density of 2.11, a melting point of 618°C, no deliquescent properties, and relative stability. It has a low solubility in water, and its solubility decreases with increasing temperature. It has a higher solubility in cold water than in hot water, is soluble in dilute acid, and is insoluble in ethanol and acetone. When carbon dioxide is introduced into a water suspension of lithium carbonate, lithium carbonate is converted into acidic lithium carbonate and dissolved. If the solution of acidic lithium carbonate is heated again, carbon dioxide will be released and lithium carbonate will precipitate.

[0003] In the production process of existing lithium carbonate, multiple heat exchange tubes are often required to be spliced ​​before use according to on-site needs. In the prior art, the splicing of heat exchange tubes is generally performed by welding. However, such splicing method, on the one hand, cannot guarantee the overall sealing, and on the other hand, the disassembly after the later use is completed is cumbersome and inconvenient. Summary of the invention

[0004] The purpose of the present invention is to provide a seamless stainless steel pipe for lithium carbonate production, which has an ingenious structure and can achieve fast, stable and efficient installation and disassembly between various pipe bodies, and is convenient and practical.

[0005] The technical solution for achieving the purpose of the present invention is as follows: the present invention comprises relatively arranged tube bodies and connecting tubes connecting the tube bodies; both ends of the connecting tubes are provided with connecting plugs integrally formed with the connecting tubes, the connecting plugs are coaxially arranged with the connecting tubes, each end surface of the tube body is provided with a connecting slot adapted to each connecting plug, and a plurality of connecting components that can cooperate and connect the connecting plugs and the connecting slots are provided between each connecting plug and the connecting slot, the connecting component comprises a rotating seat fixed on the connecting plug, a right-angle rotating rod rotatably connected to the rotating seat, a lifting slot arranged on the tube body, and a lifting locking rod slidably arranged in the lifting slot, the extension direction of the lifting slot is perpendicular to the axis of the tube body, the right-angle rotating rod comprises an integrally formed first rod body and a second rod body, the first rod body is provided with a locking block, the lifting locking rod is provided with a locking slot corresponding to the locking block, both ends of the lifting locking rod are provided with limiting sliding blocks, and both sides of the lifting slot are provided with limiting sliding grooves connected to the lifting slot The extension direction of the limit slide is parallel to the extension direction of the lifting slot, the limit slide is provided with a limit bottom groove, each limit bottom groove is connected with the corresponding limit slide, the limit bottom groove is connected with the limit slide and the extension direction of the limit bottom groove is parallel, a limit slide bar is slidably arranged in the limit bottom groove, and a limit pressing block is arranged on the end of the limit slide bar away from the limit bottom groove to press the limit slide block, a return spring is arranged in the limit bottom groove, and the two ends of the return spring are respectively engaged with the limit slide bar It is fixedly connected to the limiting bottom groove, each limiting pressure block is pressed against the corresponding limiting slider through the cooperation of the limiting slide rod and the limiting bottom groove, and the continuous force of the return spring, each lifting lock rod presses the second rod body through the cooperation of each limiting pressure block with the limiting slider, and drives the locking block on the first rod body to insert into the locking groove, and each tube body is connected to the connecting tube through the cooperation of the connecting plug and the connecting slot, the pressure of each lifting lock rod on the second rod body, and the cooperation of the locking block on the first rod body and the locking groove.

[0006] Furthermore, a rotating shaft is fixedly provided on the above-mentioned rotating seat, and a rotating hole adapted to the rotating shaft is provided on the right-angle rotating rod. A torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively fixedly connected to the rotating shaft and the rotating hole. The force applied by the torsion spring on the rotating shaft is smaller than the force applied by the reset spring on the limiting slide rod. Before the right-angle rotating rod rotates, the first rod body is pressed against the outer wall of the connecting tube by the continuous force applied by the torsion spring to the rotating shaft.

[0007] Furthermore, the lock groove is provided with a first pressing surface, the lock block is provided with a second pressing surface corresponding to the first pressing surface, the lock groove is provided with a first arcuate guide surface on the surface opposite to the first pressing surface, the lock block is provided with a second arcuate guide surface adapted to the first arcuate guide surface, the first pressing surface is fixedly pressed against the second pressing surface by the cooperation of the lifting lock rod and the lifting through groove, and the lock block is disengaged from the lock groove by the cooperation of the first arcuate guide surface and the second arcuate guide surface when the lifting lock rod is lifted.

[0008] Furthermore, the lifting lock rod is provided with a bottom arc-shaped guide surface, and when the connecting tube of the lifting lock rod is inserted into the connecting slot, the second rod body is guided by the bottom arc-shaped guide surface to rotate from a vertical state to a horizontal state.

[0009] Furthermore, a stop ring portion integrally formed with the connecting tube is provided on the inner wall of the connecting tube, and the length of the stop ring portion is greater than the length of the connecting tube. After the connecting tube is inserted into the connecting slot, the stop ring portion is pressed against the end face of the tube body, and after the stop ring portion is pressed against the end face of the tube body, an installation gap is formed between the end face of the connecting tube and the end face of the tube body, and a sealing ring gasket is fixedly installed in the installation gap.

[0010] Furthermore, each end face of the above-mentioned connecting pipe is provided with a mounting ring groove coaxially arranged with the connecting pipe, the cross-section of the mounting ring groove is "T"-shaped, and the sealing ring gasket is provided with a sealing mounting ring coaxially arranged with the sealing ring gasket, the sealing ring gasket and the sealing mounting ring are integrally formed, and the sealing ring gasket is fixedly installed on the end face of the connecting pipe by the cooperation between the sealing mounting ring and the mounting ring groove.

[0011] Furthermore, a plurality of connecting rings coaxially arranged with the tube body are fixedly provided in the above-mentioned connecting slot, and each connecting ring is evenly distributed on the inner wall of the connecting slot along the axis of the tube body, and each connecting ring is sleeved with a sealing ring sleeve, and a sealing ring groove adapted to each sealing ring sleeve is provided on the inner wall of the connecting plug, and the connecting ring is fixedly connected to the tube body through the cooperation between each connecting plug and the connecting slot, and the cooperation between the sealing ring sleeve and the sealing ring groove.

[0012] Furthermore, a sealing bottom gasket is provided in the connection slot, the sealing bottom gasket is fixed to the bottom of the connection slot, the sealing bottom gasket is coaxially arranged with the connection slot, and the connection tube is pressed against the sealing bottom gasket after being inserted into the connection slot.

[0013] Furthermore, a pull rod is fixedly provided on the lifting lock rod, and the pull rod is fixed on one end of the lifting lock rod away from the right-angle rotating rod.

[0014] The present invention has positive effects: (1) The present invention provides a connecting assembly between the connecting plug and the connecting slot, each limiting pressure block is pressed against the corresponding limiting slider through the cooperation of the limiting slide bar and the limiting bottom groove, and the continuous force of the return spring, each tube body is connected to the connecting tube through the cooperation of the connecting plug and the connecting slot, each lifting lock rod presses the second rod body, and the lock block on the first rod body cooperates with the lock groove, which effectively solves the problem of complicated splicing between the various tube bodies in the prior art, and effectively ensures the connection between each tube body and the connecting tube. The invention can be installed and disassembled quickly, and at the same time, a firm and stable connection between each tube body is ensured. The limit pressure block can effectively ensure the stable pressure on the limit slider on the lifting lock rod through the continuous force of the reset spring, thereby ensuring the stability of the lifting lock rod pressing on the right-angle rotating rod, and the continuous force of the reset spring is set to be greater than the continuous force of the torsion spring, which effectively ensures the stable pressure of the lifting lock rod on the right-angle rotating rod, further ensuring the overall stability after the quick connection of each tube body, and also facilitates the quick installation and disassembly between each tube body. The structure is ingenious, convenient and practical.

[0015] (2) The present invention arranges a rotating shaft on the rotating seat and a rotating hole on the right-angle rotating rod. The torsion spring on the rotating shaft continuously applies force to the rotating shaft and the rotating hole, so that the second rod body is in a vertical state, thereby ensuring that the lifting lock rod presses against the second rod body when the connecting tube and the connecting slot are connected, and drives the second rod body to transform its shape, thereby ensuring the accurate and firm connection between the first rod body and the lifting lock rod, which is efficient and practical.

[0016] (3) The present invention provides a first pressing surface on the lock groove and a second pressing surface on the lock block. The cooperation between the first pressing surface and the second pressing surface ensures that the lock block is stably and firmly pressed in the lock groove. A first arcuate guide surface is provided on the lock groove and a second arcuate guide surface is provided on the lock block. The cooperation between the first arcuate guide surface and the second arcuate guide surface effectively ensures that the lock groove guides the lock block during the process of the lock block being separated from the lock groove, which can facilitate the lock block to be introduced into the lock groove and to be separated from the lock groove, thereby facilitating the rapid installation and removal of the pipe body and the connecting pipe, which is efficient and convenient.

[0017] (4) The present invention provides a bottom arc guide surface on the lifting lock rod. During the process of plugging the connecting tube into the connecting slot, the lifting lock rod presses against the right-angle lock rod. During the pressing process, the lifting lock rod presses against the second rod part, and along with the guidance of the bottom arc guide surface, the second rod body is rotated from a vertical state to a horizontal state, and the first rod body is rotated from a horizontal state to a vertical state, and the locking block is inserted into the locking groove, thereby further ensuring a firm and stable connection between the connecting tube and the tube body. The invention is practical and convenient.

[0018] (5) The present invention provides a stop ring on the inner wall of the connecting pipe. The stop ring cooperates with the end face of the pipe body to ensure stable pressure between the stop ring and the end face of the pipe body. At the same time, it also ensures the positioning connection between the connecting pipe and the pipe body, which is efficient and convenient.

[0019] (6) The present invention provides a mounting ring groove on the end face of the connecting pipe and a sealing mounting ring on the sealing ring gasket. The sealing ring gasket is fixedly installed between the connecting pipe and the pipe body through the cooperation of the sealing mounting ring and the mounting ring groove. On the one hand, the stability of the connection between the connecting pipe and the pipe body can be ensured, and on the other hand, the positioning installation of the connecting pipe and the pipe body can be ensured, which is convenient and practical.

[0020] (7) The present invention provides a connecting ring in the connecting slot, and sleeves a sealing ring sleeve on the connecting ring. The cooperation between the sealing ring sleeve and the sealing ring groove ensures the tightness and sealing of the connection between the connecting tube and the inner wall of the connecting slot, which is efficient and convenient.

[0021] (8) The present invention provides a sealing pad in the connection slot. After the connection insert is inserted into the connection slot, it is pressed against the sealing pad, thereby generating a seal between the tube body and the connection tube, thereby ensuring the sealing between the tube body and the connection tube.

[0022] (9) The present invention provides a pull rod on the lifting lock rod. When each tube body and the connecting tube are disassembled, the lock rod is lifted up by the pull rod. During the lifting of the lifting lock rod, the first arc-shaped guide surface and the second arc-shaped guide surface cooperate to separate the lock blocks from each other, thereby facilitating the separation of the tube body and the connecting tube, which is efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein Figure 1 A cross-sectional view of the overall structure of a seamless stainless steel pipe for lithium carbonate production in the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 for Figure 1 The enlarged view of point B in the middle; Figure 4 is a cross-sectional view of the connecting pipe in the present invention; Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 It is a cross-sectional view of the overall structure of the right-angle rotating rod in the present invention; Figure 7 is a cross-sectional view of the overall structure of the tube body in the present invention; Figure 8 for Figure 7 The enlarged view of point D in the middle; Fig. 9 It is a cross-sectional view of the lifting lock rod in the present invention. DETAILED DESCRIPTION

[0024] See Figures 1 to 9 The present invention comprises a tube body 1 arranged relatively to each other, and a connecting tube 2 connecting each tube body 1; both ends of the connecting tube 2 are provided with a connecting plug 21 integrally formed with the connecting tube 2, the connecting plug 21 is coaxially arranged with the connecting tube 2, each end surface of the tube body 1 is provided with a connecting slot 11 adapted to each connecting plug 21, and a plurality of connecting components 4 that can match and connect the connecting plug 21 and the connecting slot 11 are provided between each connecting plug 21 and the connecting slot 11, the connecting component 4 comprises a rotating seat 41 fixed on the connecting plug 21, a right-angle rotating rod 42 rotatably connected to the rotating seat 41, and a connecting rod 42 arranged on the connecting plug 21. The lifting slot 10 on the tube body 1 and the lifting lock rod 44 slidably arranged in the lifting slot 10, the extension direction of the lifting slot 10 is perpendicular to the axis of the tube body 1, the right-angle rotating rod 42 includes a first rod body 421 and a second rod body 422 formed in one piece, the first rod body 421 is provided with a locking block 43, the lifting lock rod 44 is provided with a locking groove 47 corresponding to the locking block 43, and both ends of the lifting lock rod 44 are provided with a limiting slider 45, and both sides of the lifting slot 10 are provided with a limiting slide groove 101 connected to the lifting slot 10, and the extension direction of the limiting slide groove 101 is perpendicular to the extension direction of the lifting slot 10. The limiting slide groove 101 is provided with a limiting bottom groove 102, each limiting bottom groove 102 is connected with the corresponding limiting slide groove 101, the limiting bottom groove 102 is connected with the limiting slide groove 101 and the extending direction of the limiting bottom groove 102 is arranged in parallel, a limiting slide rod 103 is slidably provided in the limiting bottom groove 102, and a limiting pressing block 104 that can press the limiting slider 45 is provided at one end of the limiting slide rod 103 away from the limiting bottom groove 102, and a return spring 105 is provided in the limiting bottom groove 102, and the two ends of the return spring 105 are respectively fixed to the limiting slide rod 103 and the limiting bottom groove 102 The limiting pressure blocks 104 are connected, and each limiting pressure block 104 is pressed against the corresponding limiting slider 45 through the cooperation of the limiting slide bar 103 and the limiting bottom groove 102, and the continuous force of the return spring 105. Each lifting lock rod 44 presses the second rod body 422 through the cooperation of each limiting pressure block 104 with the limiting slider 45, and drives the locking block 43 on the first rod body 421 to be inserted into the locking groove 47. Each tube body 1 is connected to the connecting tube 2 through the cooperation of the connecting insert 21 and the connecting slot 11, the pressing of each lifting lock rod 44 on the second rod body 422, and the cooperation of the locking block 43 on the first rod body 421 and the locking groove 47.

[0025] A rotating shaft 411 is fixedly provided on the rotating seat 41, and a rotating hole 423 adapted to the rotating shaft 411 is provided on the right-angle rotating rod 42. A torsion spring 424 is sleeved on the rotating shaft 411, and the two ends of the torsion spring 424 are respectively fixedly connected to the rotating shaft 411 and the rotating hole 423. The force applied by the torsion spring 424 to the rotating shaft 411 is smaller than the force applied by the reset spring 105 to the limiting slide bar 103. Before the right-angle rotating rod 42 rotates, the first rod body 421 is pressed against the outer wall of the connecting tube 2 through the continuous force applied by the torsion spring 424 to the rotating shaft 411.

[0026] The lock groove 47 is provided with a first pressing surface 471, the lock block 43 is provided with a second pressing surface 431 corresponding to the first pressing surface 471, the lock groove 47 is provided with a first arcuate guide surface 472 on the surface opposite to the first pressing surface 471, the lock block 43 is provided with a second arcuate guide surface 432 adapted to the first arcuate guide surface 472, the first pressing surface 471 is fixedly pressed on the second pressing surface 431 by the cooperation of the lifting lock rod 44 and the lifting groove 10, and the lock block 43 is disengaged from the lock groove 47 by the cooperation of the first arcuate guide surface 472 and the second arcuate guide surface 432 when the lifting lock rod 44 is lifted.

[0027] The lifting lock rod 44 is provided with a bottom arc-shaped guide surface 441 . When the connecting pipe 21 is inserted into the connecting slot 11 , the second rod body 422 is guided by the bottom arc-shaped guide surface 441 to rotate from a vertical state to a horizontal state.

[0028] A stop ring 24 is provided on the inner wall of the connecting tube 2 which is integrally formed with the connecting tube 2, and the length of the stop ring 24 is greater than the length of the connecting tube 2. After the connecting plug 21 is inserted into the connecting slot 11, the stop ring 24 is pressed against the end face of the tube body 1. After the stop ring 24 is pressed against the end face of the tube body 1, an installation gap is formed between the end face of the connecting tube 2 and the end face of the tube body 1, and a sealing ring gasket 3 is fixedly installed in the installation gap.

[0029] Each end face of the connecting pipe 2 is provided with a mounting ring groove 22 coaxially arranged with the connecting pipe 2, and the cross-section of the mounting ring groove 22 is "T"-shaped. The sealing ring gasket 3 is provided with a sealing mounting ring 31 coaxially arranged with the sealing ring gasket 3. The sealing ring gasket 3 and the sealing mounting ring 31 are integrally formed, and the sealing ring gasket 3 is fixedly installed on the end face of the connecting pipe 2 by the cooperation between the sealing mounting ring 31 and the mounting ring groove 22.

[0030] A plurality of connecting rings 13 coaxially arranged with the pipe body 1 are fixedly provided in the connecting slot 11, and the connecting rings 13 are evenly distributed on the inner wall of the connecting slot 11 along the axis of the pipe body 1, and a sealing ring sleeve 14 is sleeved on each connecting ring 13. A sealing ring groove 23 adapted to each sealing ring sleeve 14 is provided on the inner wall of the connecting plug 21, and the connecting ring 13 is fixedly connected to the pipe body 1 through the cooperation between each connecting plug 21 and the connecting slot 11, and the cooperation between the sealing ring sleeve 14 and the sealing ring groove 23.

[0031] A sealing bottom gasket 12 is provided in the connection slot 11 , and the sealing bottom gasket 12 is fixed to the bottom of the connection slot 11 . The sealing bottom gasket 12 is coaxially arranged with the connection slot 11 . After the connection plug 21 is inserted into the connection slot 11 , it is pressed against the sealing bottom gasket 12 .

[0032] A pull rod 46 is fixedly provided on the lifting lock rod 44 . The pull rod 46 is fixed on one end of the lifting lock rod 44 away from the right-angle rotating rod 42 .

[0033] Working principle of the present invention: During the use of the present invention, the sealing ring gasket 3 is fixedly installed on the end surface of the connecting pipe 2 through the cooperation of the sealing mounting ring 31 and the mounting ring groove 22, each sealing ring sleeve 14 is sleeved on the corresponding connecting ring 13, and the sealing bottom gasket 12 is fixedly installed on the groove bottom of the connecting slot 11; During use, each connecting plug 21 on the connecting tube 2 is plugged into the connecting slot 11. During the plugging process of the connecting plug 21 and the connecting slot 11, each sealing ring sleeve 14 forms a sealed connection with the inner wall of the connecting plug 21 by cooperating with the sealing ring groove 23. Before the connecting plug 21 is inserted into the connecting slot 11, the second rod body 422 on the right-angle rotating rod 42 is in a vertical state through the continuous force of the torsion spring 424 on the rotating shaft 411. During the insertion of the connecting plug 21 into the connecting slot 11, the lifting lock rod 44 presses the second rod body 422 and guides the second rod body 422 through the bottom arc-shaped guide surface 441, and brings The second rod body 422 is rotated from a vertical state to a horizontal state, and at the same time, the first rod body 421 is rotated from a state of pressing against the outer wall of the connecting pipe 2 to a state where the locking block 43 is connected to the locking groove 47. During the connection process, the locking block 43 is guided into the locking groove 47 by the cooperation of the first arc-shaped guide surface 472 and the second arc-shaped guide surface 432, and during the descending process of the lifting lock rod 44, the cooperation of the first pressing surface 471 and the second pressing surface 431 can ensure the stability of the plugging of the locking block 43 and the locking groove 47, and on the other hand, can ensure the pressing of the lifting lock rod 44 and the second rod body 422, thereby effectively ensuring the stable and firm connection between the connecting pipe 2 and the pipe body 1; During the disassembly of the connecting tube 2 and the tube body 1, the operator can pull each pull rod 46. During the pulling of the pull rod 46, the operator can overcome the continuous force of the reset spring 105 to lift the lifting lock rod 44. During the lifting of the lifting lock rod 44, the cooperation of the first arc guide surface 472 and the second arc guide surface 432 drives the locking block 43 to disengage from the locking groove 47, and during the disengagement process, the force of the torsion spring 424 on the rotating shaft 411 drives the right-angle rotating rod 42 to reset, thereby disengaging the connecting tube 2 from each tube body 1, thereby effectively solving the problem of complicated installation and disassembly between each tube body 1 in the prior art, and realizing quick installation and disassembly between each tube body 1 through the connecting tube 2, with a clever structure and high efficiency and convenience.

[0034] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is 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 seamless stainless steel pipe for lithium carbonate production, comprising relatively arranged pipe bodies and connecting pipes for connecting the pipe bodies; characterized in that: The two ends of the connecting tube are provided with connecting plugs that are integrally formed with the connecting tube, and the connecting plugs are coaxially arranged with the connecting tube, and each end surface of the tube body is provided with a connecting slot that is adapted to each connecting plug, and a plurality of connecting components that can cooperate and connect the connecting plugs and the connecting slots are provided between each connecting plug and the connecting slot, and the connecting component includes a rotating seat fixed on the connecting plug, a right-angle rotating rod rotatably connected to the rotating seat, a lifting and lowering slot arranged on the tube body, and a lifting and lowering locking rod slidably arranged in the lifting and lowering slot, and the extension direction of the lifting and lowering slot is arranged perpendicular to the axis of the tube body, and the right-angle rotating rod includes a first rod body and a second rod body that are integrally formed, a locking block is provided on the first rod body, and a locking slot corresponding to the locking block is provided on the lifting and lowering locking rod, and limiting sliding blocks are provided at both ends of the lifting and lowering locking rod, and limiting sliding grooves that are connected to the lifting and lowering slots are provided on both sides of the lifting and lowering slots, and the extension direction of the limiting sliding grooves is parallel to the extension direction of the lifting and lowering slots The locking mechanism is a vertical cam which is located adjacent to the locking mechanism, and the locking mechanism has a locking cam which is located adjacent to the locking mechanism, and a locking cam which is located adjacent to the locking mechanism, and a locking cam which is located adjacent to the locking mechanism, is engaged with the locking mechanism.

2. The seamless stainless steel pipe for lithium carbonate production according to claim 1, characterized in that: A rotating shaft is fixed on the rotating seat, a rotating hole matching the rotating shaft is provided on the right-angle rotating rod, a torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively fixedly connected to the rotating shaft and the rotating hole. The force applied by the torsion spring on the rotating shaft is smaller than the force applied by the reset spring on the limiting slide rod. Before the right-angle rotating rod rotates, the first rod body is pressed against the outer wall of the connecting tube by the continuous force applied by the torsion spring to the rotating shaft.

3. The seamless stainless steel pipe for lithium carbonate production according to claim 2, characterized in that: The lock groove is provided with a first pressing surface, the lock block is provided with a second pressing surface corresponding to the first pressing surface, the lock groove is provided with a first arcuate guide surface on the surface opposite to the first pressing surface, the lock block is provided with a second arcuate guide surface adapted to the first arcuate guide surface, the first pressing surface is fixedly pressed against the second pressing surface by the cooperation of the lifting lock rod and the lifting through groove, and the lock block is disengaged from the lock groove by the cooperation of the first arcuate guide surface and the second arcuate guide surface when the lifting lock rod is lifted.

4. The seamless stainless steel pipe for lithium carbonate production according to claim 3, characterized in that: The lifting lock rod is provided with a bottom arc-shaped guide surface. When the connecting plug is inserted into the connecting slot, the second rod body is guided by the bottom arc-shaped guide surface to rotate from a vertical state to a horizontal state.

5. The seamless stainless steel pipe for lithium carbonate production according to claim 4, characterized in that: A stop ring portion integrally formed with the connecting pipe is provided on the inner wall of the connecting pipe, and the length of the stop ring portion is greater than the length of the connecting pipe. After the connecting pipe is inserted into the connecting slot, the stop ring portion is pressed against the end face of the pipe body. After the stop ring portion is pressed against the end face of the pipe body, an installation gap is formed between the end face of the connecting pipe and the end face of the pipe body, and a sealing ring gasket is fixedly installed in the installation gap.

6. The seamless stainless steel pipe for lithium carbonate production according to claim 5, characterized in that: Each end face of the connecting pipe is provided with a mounting ring groove coaxially arranged with the connecting pipe, and the cross-section of the mounting ring groove is "T"-shaped. The sealing ring gasket is provided with a sealing mounting ring coaxially arranged with the sealing ring gasket. The sealing ring gasket and the sealing mounting ring are integrally formed, and the sealing ring gasket is fixedly installed on the end face of the connecting pipe through the cooperation of the sealing mounting ring and the mounting ring groove.

7. The seamless stainless steel pipe for lithium carbonate production according to claim 6, characterized in that: A plurality of connecting rings coaxially arranged with the tube body are fixedly provided in the connecting slot, and the connecting rings are evenly distributed on the inner wall of the connecting slot along the axis of the tube body, and a sealing ring sleeve is sleeved on each connecting ring. A sealing ring groove adapted to each sealing ring sleeve is provided on the inner wall of the connecting plug, and the connecting ring is fixedly connected to the tube body through the cooperation between each connecting plug and the connecting slot, and the cooperation between the sealing ring sleeve and the sealing ring groove.

8. The seamless stainless steel pipe for lithium carbonate production according to claim 7, characterized in that: A sealing bottom pad is arranged in the connection slot, the sealing bottom pad is fixed to the bottom of the connection slot, the sealing bottom pad is coaxially arranged with the connection slot, and the connection plug is pressed against the sealing bottom pad after being inserted into the connection slot.

9. The seamless stainless steel pipe for lithium carbonate production according to claim 8, characterized in that: A pull rod is fixedly provided on the lifting lock rod, and the pull rod is fixed on one end of the lifting lock rod away from the right-angle rotating rod.

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