A multi-section clamping and fixing structure for welding of variable diameter pipes for conveying fluid in sterilizing pots

Abstract

The present invention relates to the technical field of clamping equipment, and in particular to a multi-section clamping and fixing structure for welding a variable-diameter pipe for conveying fluid in a sterilizing pot, comprising a plurality of clamping units, which are arranged side by side; the clamping unit comprises an arc-shaped base plate, the arc-shaped base plate opening faces upward, a plurality of first guide grooves are provided on the inner wall of the arc-shaped base plate, the first guide grooves are along the axial direction of the arc-shaped base plate, and arc-shaped movable plates are arranged on both the front and rear sides of the arc-shaped base plate, and the arc-shaped movable plates are slidably installed in the first guide grooves; by coaxially clamping and fixing different positions of the variable-diameter pipe, synchronous fixing of different diameter positions of the variable-diameter pipe can be achieved, which facilitates the fixing of pipes of any diameter, effectively improves the convenience of pipe fixing, and at the same time avoids the need to set the clamping units at different heights due to different diameters of the pipes, effectively simplifying the pipe fixing method.

Description

Technical Field

[0001] The invention relates to the technical field of clamping equipment, and in particular to a multi-section clamping and fixing structure for welding a variable-diameter pipe for conveying fluid in a sterilizing pot. Background Art

[0002] As we all know, the sterilizer is mainly composed of a pot body, a pot cover, an opening device, a locking wedge, a safety interlock device, a track, a sterilization basket, a steam nozzle and several pipe openings. Its main function is to heat the food in the pot at high temperature and high pressure to achieve the effect of sterilization. The sterilizer needs to transfer heat through a medium when in use. The medium generally used is pure steam, hot water and steam, air mixture and other fluid media, and the pipe is an indispensable structure for the transportation of the fluid medium in the sterilizer. In order to facilitate the docking of pipes of different diameters on the sterilizer, reducer pipes are often required to connect the main pipe and the branch pipe.

[0003] Variable diameter pipe refers to the pipe with a change in diameter. This type of pipe is generally used in positions where it needs to be connected to other pipes. At the same time, the pipe also plays a role in changing the flow rate and pressure of the fluid in the pipe. When the variable diameter pipe is butt-welded with other pipes, the pipe needs to be fixed. The traditional fixing method is to use a variety of different specifications of fixing clamps to fix the different diameter positions of the pipe separately. This fixing method is easy to cause confusion in the use of clamps, affecting the convenience of pipe fixing. At the same time, due to the difference in diameter of the variable diameter pipe at different positions, the clamps need to be set at different heights to fix the pipe, which makes the fixing of the variable diameter pipe more cumbersome. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot comprises a plurality of clamping units, and the plurality of clamping units are arranged side by side;

[0007] The clamping unit includes an arc-shaped substrate, the opening of the arc-shaped substrate faces upward, a plurality of first guide grooves are opened on the inner wall of the arc-shaped substrate, the first guide grooves are along the axial direction of the arc-shaped substrate, arc-shaped movable plates are arranged on the front and rear sides inside the arc-shaped substrate, the arc-shaped movable plates are slidably installed in the first guide grooves, a plurality of bow-shaped frames are arranged on the inner side of the arc-shaped substrate, two push plates are rotatably installed on the outer wall of the bow-shaped frames, the outer ends of the two push plates are rotatably installed on the two arc-shaped movable plates, and an extrusion wheel is rotatably arranged inside the bow-shaped frame.

[0008] Furthermore, a slide groove is provided on the side wall of the push plate, a slider is slidably arranged in the slide groove, a half gear is arranged on the slider, two half gears on the bow frame are meshed and connected with each other, a positioning plate is arranged on the two half gears, and the positioning plate is rotatably connected with the half gears.

[0009] Furthermore, a second guide groove is provided in the middle of the inner circumferential wall of the arc-shaped base plate, arc-shaped power plates are slidably arranged on both left and right sides of the second guide groove, and a plurality of push rods are arranged on the outer wall of the arc-shaped power plate;

[0010] The arc-shaped movable plate is provided with a plurality of notches, a first sliding sleeve is arranged in the notch, and the push rod obliquely passes through the first sliding sleeve and is slidably connected;

[0011] The push rods on the two arc-shaped power plates are inclined in opposite directions, and the push rods on the two arc-shaped moving plates are inclined in opposite directions.

[0012] Further, a rotating screw sleeve is arranged on the first sliding sleeve, the rotating screw sleeve passes through the arc-shaped movable plate and is rotatably connected, a first arched plate is installed on the inner wall of the arc-shaped movable plate, the outer end of the rotating screw sleeve contacts the first arched plate, a first through opening is opened in the middle of the first arched plate, a first locking bolt is arranged in the first through opening, the first locking bolt passes through the first through opening and is screwed into the rotating screw sleeve;

[0013] The push rod is rotatably connected to the arc-shaped power plate.

[0014] Furthermore, it also includes an arc-shaped outer plate, which is located outside the multiple groups of clamping units. A plurality of guide rails are arranged on the inner wall of the arc-shaped outer plate. The guide rails are along the axis direction of the arc-shaped outer plate, and the arc-shaped base plate is slidably installed on the guide rails.

[0015] Further, the arc-shaped outer plate is provided with a plurality of adjustment openings, a second sliding sleeve is installed on the outer wall of the arc-shaped base plate, the second sliding sleeve is inserted into the arc-shaped base plate, a first sliding rod is provided on the second sliding sleeve, the first sliding rod is slidably inserted into the second sliding sleeve, a threaded rod is installed on the outer end of the first sliding rod, an extrusion screw sleeve is threadedly mounted on the outer wall of the threaded rod, a top plate is obliquely and rotatably arranged on the upper and lower sides of the outer wall of the extrusion screw sleeve, the outer end of the top plate contacts the inner wall of the adjustment opening, a pull plate is rotatably arranged in the middle of the top plate, and the outer end of the pull plate is rotatably mounted on the outer wall of the arc-shaped base plate;

[0016] A second arched plate is provided on the outer wall of the arc-shaped outer plate outside the regulating port, a second through opening is opened on the second arched plate, a second locking bolt is provided on the second arched plate, and the second locking bolt passes through the second through opening and is screwed into the threaded rod.

[0017] Furthermore, a sleeve is provided inside the arc-shaped base plate, and two second sliding rods are slidably provided inside the sleeve, and the outer ends of the two second sliding rods extend to the outside of the sleeve, and a right-angle plate is installed at the outer end of the second sliding rod, and the right-angle plate is rotatably installed on the arc-shaped power plate, and a plurality of telescopic rods are installed at the bottom of the sleeve, and the fixed ends of the telescopic rods are installed on the arc-shaped base plate.

[0018] Furthermore, an oil cylinder is installed on the sleeve, and a fixed end of the oil cylinder is installed on the arc-shaped substrate. A high-pressure oil tank is installed on the outer wall of the arc-shaped outer plate. A multi-way pipe and an oil guide pipe are connected to the high-pressure oil tank, and multiple output ends of the multi-way pipe are respectively connected to the oil cylinders on multiple arc-shaped substrates.

[0019] Furthermore, it also includes a motor, which is installed on a bow-shaped frame in a group of clamping units, and the output end of the motor is drivingly connected to the extrusion wheel on the bow-shaped frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: by coaxially clamping and fixing different positions of the variable diameter pipe, the synchronous fixing of different diameter positions of the variable diameter pipe can be achieved, which is convenient for fixing pipes of any diameter, effectively improving the convenience of pipe fixing, and at the same time avoiding the need to set the clamping unit at different heights due to different diameters of the pipe, effectively simplifying the pipe fixing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the oblique structure of the present invention;

[0024] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the second bow-shaped plate;

[0025] Figure 4 yes Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 5 yes Figure 3 A schematic diagram of the partially enlarged structure at B in the middle;

[0027] Markings in the accompanying drawings: 1, arc-shaped base plate; 2, arc-shaped moving plate; 3, push plate; 4, bow frame; 5, extrusion wheel; 6, slider; 7, half gear; 8, positioning plate; 9, arc-shaped power plate; 10, push rod; 11, first sliding sleeve; 12, rotating screw sleeve; 13, first arched plate; 14, first locking bolt; 15, arc-shaped outer plate; 16, guide rail; 17, second sliding sleeve; 18, first slide rod; 19, threaded rod; 20, extrusion screw sleeve; 21, top plate; 22, pull plate; 23, second arched plate; 24, second locking bolt; 25, sleeve; 26, second slide rod; 27, right-angle plate; 28, telescopic rod; 29, oil cylinder; 30, high-pressure oil tank; 31, multi-way pipe; 32, oil guide pipe; 33, notch; 34, motor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0031] like Figures 1 to 4 As shown, a multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot of the present invention comprises a plurality of groups of clamping units, and the plurality of groups of clamping units are arranged side by side;

[0032] The clamping unit includes an arc-shaped substrate 1, which is opened upward. A plurality of first guide grooves are provided on the inner wall of the arc-shaped substrate 1, and the first guide grooves are along the axial direction of the arc-shaped substrate 1. Arc-shaped movable plates 2 are provided on both the front and rear sides of the arc-shaped substrate 1, and the arc-shaped movable plates 2 are slidably installed in the first guide grooves. A plurality of bow-shaped frames 4 are provided on the inner side of the arc-shaped substrate 1, and two push plates 3 are rotatably installed on the outer wall of the bow-shaped frame 4. The outer ends of the two push plates 3 are rotatably installed on the two arc-shaped movable plates 2 respectively, and an extrusion wheel 5 is rotatably provided in the bow-shaped frame 4.

[0033] In this embodiment, the variable diameter pipe is placed in a plurality of groups of clamping units, and the two arc-shaped movable plates 2 on the arc-shaped base plate 1 are pushed to approach each other, and the arc-shaped movable plates 2 slide in the first guide groove. The two arc-shaped movable plates 2 push the arch frame 4 and the extrusion wheel 5 to move synchronously through the two push plates 3. The multiple extrusion wheels 5 in the arc-shaped base plate 1 move synchronously and approach the axis of the arc-shaped base plate 1. The outer wall of the extrusion wheel 5 contacts the outer wall of the pipe and extrudes and fixes it, thereby realizing the fixing of the pipe. By adjusting the distance between the two arc-shaped movable plates 2 in each group of clamping units, the moving distance of the multiple extrusion wheels 5 in the arc-shaped base plate 1 can be conveniently adjusted, so that the extrusion wheels 5 can be conveniently adjusted to the pipes at different diameter positions. The pipe is clamped and fixed. Since the multiple extrusion wheels 5 in the arc-shaped base plate 1 move synchronously, the multiple extrusion wheels 5 can be conveniently used to center the pipe, so as to facilitate the axial position of the pipe after fixation, and facilitate the coaxiality of the axes of the pipes at different diameter positions, so as to avoid the deviation and distortion of the pipes, and facilitate the subsequent welding of the pipes. By performing coaxial clamping and fixing treatment on different positions of the variable-diameter pipe, the synchronous fixing of the different diameter positions of the variable-diameter pipe can be achieved, so as to facilitate the fixing of pipes of any diameter, effectively improve the convenience of pipe fixing, and avoid the need to set the clamping units at different heights due to different diameters of the pipes, so as to effectively simplify the pipe fixing method.

[0034] like Figure 4 As shown, as a preferred embodiment of the above embodiment, a sliding groove is opened on the side wall of the push plate 3, a slider 6 is slidably arranged in the sliding groove, a half gear 7 is arranged on the slider 6, the two half gears 7 on the bow frame 4 are meshed and connected with each other, and a positioning plate 8 is arranged on the two half gears 7, and the positioning plate 8 is rotatably connected with the half gear 7.

[0035] In this embodiment, the positioning plate 8 limits the position between the two half gears 7 to ensure that they are always in a meshing state. When the two push plates 3 are tilted and approached to each other, the bow frame 4 and the extrusion wheel 5 move toward the axis of the arc-shaped substrate 1. At the same time, the push plate 3 drives the half gear 7 to tilt and rotate through the slider 6. The two half gears 7 on the bow frame 4 mesh and rotate with each other, and the slider 6 slides synchronously in the slide groove, so that the two push plates 3 keep moving synchronously, making it convenient to make the bow frame 4 and the extrusion wheel 5 always face the axis direction of the arc-shaped substrate 1 to avoid the bow frame 4 from tilting.

[0036] like Figure 4 As shown, as a preferred embodiment of the above, a second guide groove is opened in the middle of the inner wall of the arc-shaped base plate 1, and arc-shaped power plates 9 are slidably arranged on both sides of the second guide groove, and a plurality of push rods 10 are arranged on the outer wall of the arc-shaped power plate 9;

[0037] The arc-shaped moving plate 2 is provided with a plurality of notches 33, a first sliding sleeve 11 is arranged in the notch 33, and the push rod 10 obliquely passes through the first sliding sleeve 11 and is slidably connected;

[0038] The push rods 10 on the two arc-shaped power plates 9 are inclined in opposite directions, and the push rods 10 on the two arc-shaped moving plates 2 are inclined in opposite directions.

[0039] In this embodiment, the two arc-shaped power plates 9 are pushed to move synchronously, and the two arc-shaped power plates 9 drive the push rods 10 thereon to move. Since the push rods 10 are tilted, the push rods 10 push the arc-shaped movable plates 2 to slide on the arc-shaped base plate 1 through the first sliding sleeve 11, so that the two arc-shaped movable plates 2 move synchronously relative to each other, which facilitates pushing the extrusion wheel 5 to move along the radial direction of the arc-shaped base plate 1, and at the same time the push rods 10 slide in the first sliding sleeve 11.

[0040] like Figure 4 As shown, as a preferred embodiment of the above embodiment, a rotating screw sleeve 12 is provided on the first sliding sleeve 11, and the rotating screw sleeve 12 passes through the arc-shaped movable plate 2 and is rotatably connected. A first arched plate 13 is installed on the inner wall of the arc-shaped movable plate 2, and the outer end of the rotating screw sleeve 12 contacts the first arched plate 13. A first through opening is opened in the middle of the first arched plate 13, and a first locking bolt 14 is provided in the first through opening. The first locking bolt 14 passes through the first through opening and is screwed into the rotating screw sleeve 12;

[0041] The push rod 10 is rotatably connected to the arc-shaped power plate 9 .

[0042] In this embodiment, the first locking bolt 14 is tightened, and the first locking bolt 14 fixes the rotating screw sleeve 12 and the first bow plate 13, thereby fixing the angle of the first sleeve 11, and the first locking bolt 14 is loosened and the first sleeve 11 is rotated, thereby adjusting the inclination angle of the push rod 10, so as to facilitate the adjustment of the moving distance of the arc moving plate 2 when the arc power plate 9 moves a specified distance, thereby adjusting the transmission ratio between the arc power plate 9 and the arc moving plate 2.

[0043] like Figures 1 to 4 As shown, as a preferred embodiment of the above embodiment, it also includes a curved outer plate 15, which is located on the outside of the multiple groups of clamping units. A plurality of guide rails 16 are arranged on the inner wall of the curved outer plate 15. The guide rails 16 are along the axial direction of the curved outer plate 15, and the curved base plate 1 is slidably installed on the guide rails 16.

[0044] In this embodiment, the arc-shaped base plate 1 can slide on the guide rail 16, so as to adjust the positions between the multiple groups of clamping units, so as to facilitate the effective clamping and fixing of the pipe according to the diameter change length and diameter change position of the pipe.

[0045] like Figure 5 As shown, as a preferred embodiment of the above embodiment, a plurality of adjustment ports are provided on the arc-shaped outer plate 15, a second sliding sleeve 17 is installed on the outer wall of the arc-shaped substrate 1, the second sliding sleeve 17 is inserted into the arc-shaped substrate 1, a first sliding rod 18 is provided on the second sliding sleeve 17, the first sliding rod 18 is slidably inserted into the second sliding sleeve 17, a threaded rod 19 is installed on the outer end of the first sliding rod 18, an extrusion screw sleeve 20 is threadedly sleeved on the outer wall of the threaded rod 19, a top plate 21 is obliquely and rotatably provided on the upper and lower sides of the outer wall of the extrusion screw sleeve 20, the outer end of the top plate 21 contacts the inner wall of the adjustment port, a pull plate 22 is rotatably provided in the middle of the top plate 21, and the outer end of the pull plate 22 is rotatably installed on the outer wall of the arc-shaped substrate 1;

[0046] A second arched plate 23 is provided on the outer wall of the arc-shaped outer plate 15 outside the regulating port, and a second through opening is opened on the second arched plate 23. A second locking bolt 24 is provided on the second arched plate 23, and the second locking bolt 24 passes through the second through opening and is screwed into the threaded rod 19.

[0047] In this embodiment, the threaded rod 19 is rotated, and the threaded rod 19 pushes the extrusion screw sleeve 20 to move, and the extrusion screw sleeve 20 pushes the two top plates 21 to tilt, so that the two top plates 21 are pressed against the inner wall of the adjusting port, and the pulling plate 22 can support and pull the top plate 21, and the threaded rod 19 in the rotating state can drive the first sliding rod 18 to rotate, and the second locking bolt 24 can lock the threaded rod 19 on the second arch plate 23, and because the top plate 21 is in a top-pressing state, the top plate 21 can be squeezed and fixed on the outer wall of the arc-shaped outer plate 15 by the extrusion screw sleeve 20, the threaded rod 19 and the second locking bolt 24, so that the threaded rod 19 and the first sliding rod 18 are fixed on the arc-shaped outer plate 15, and the first sliding rod 18 can clamp the second sliding sleeve 17 and the arc-shaped substrate 1, thereby realizing the fixation of the position of the arc-shaped substrate 1.

[0048] like Figure 3 As shown, as a preferred embodiment of the above embodiment, a sleeve 25 is provided in the arc-shaped base plate 1, and two second sliding rods 26 are slidably provided inside the sleeve 25, and the outer ends of the two second sliding rods 26 are extended to the outside of the sleeve 25, and the outer ends of the second sliding rods 26 are installed with right-angle plates 27, and the right-angle plates 27 are rotatably installed on the arc-shaped power plate 9. A plurality of telescopic rods 28 are installed at the bottom of the sleeve 25, and the fixed ends of the telescopic rods 28 are installed on the arc-shaped base plate 1.

[0049] In this embodiment, the sleeve 25 is pushed to move up and down, the telescopic rod 28 performs telescopic movement and guides the sleeve 25, and the sleeve 25 drives the two arc-shaped power plates 9 to move synchronously relative to each other through two second sliding rods 26 and two right-angle plates 27, thereby causing the multiple extrusion wheels 5 on the arc-shaped base plate 1 to move synchronously.

[0050] like Figure 3 As shown, as a preferred embodiment of the above embodiment, an oil cylinder 29 is installed on the sleeve 25, and the fixed end of the oil cylinder 29 is installed on the arc-shaped substrate 1. A high-pressure oil tank 30 is installed on the outer wall of the arc-shaped outer plate 15. A multi-way pipe 31 and an oil guide pipe 32 are connected to the high-pressure oil tank 30, and multiple output ends of the multi-way pipe 31 are respectively connected to the oil cylinders 29 on multiple arc-shaped substrates 1.

[0051] In this embodiment, external hydraulic oil is pumped into the high-pressure oil tank 30 through the oil guide pipe 32. The pressure of the hydraulic oil in the high-pressure oil tank 30 increases and is introduced into the multiple cylinders 29 through the multi-way pipe 31. The multiple cylinders 29 synchronously push the multiple sleeves 25 to move up and down. At the same time, the multiple cylinders 29 maintain a balanced pushing force on the multiple sleeves 25, so that the extrusion force of the multiple extrusion wheels 5 on the multiple arc-shaped substrates 1 on the pipe is balanced, avoiding deformation of the pipe due to excessive force difference.

[0052] like Figure 1 As shown, as a preferred embodiment of the above embodiment, it also includes a motor 34, which is installed on a bow frame 4 in a group of clamping units, and the output end of the motor 34 is transmission-connected to the extrusion wheel 5 on the bow frame 4.

[0053] In this embodiment, by providing a motor 34, the extrusion wheel 5 thereon can be conveniently driven to rotate, thereby driving the pipe to rotate, and facilitating welding of the rotating pipe.

[0054] The multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot of the present invention has common mechanical installation, connection or setting methods, and can be implemented as long as the beneficial effects can be achieved.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-stage clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot, characterized in that: It comprises a plurality of groups of clamping units, and the plurality of groups of clamping units are arranged side by side; The clamping unit includes an arc-shaped base plate, the arc-shaped base plate is opened upward, a plurality of first guide grooves are opened on the inner wall of the arc-shaped base plate, the first guide grooves are along the axis direction of the arc-shaped base plate, an arc-shaped movable plate is arranged on both the front and rear sides of the arc-shaped base plate, the arc-shaped movable plate is slidably installed in the first guide groove, a plurality of arch frames are arranged on the inner side of the arc-shaped base plate, two push plates are rotatably installed on the outer wall of the arch frame, the outer ends of the two push plates are rotatably installed on the two arc-shaped movable plates, and an extrusion wheel is rotatably arranged in the arch frame; A slide groove is provided on the side wall of the push plate, a slider is slidably arranged in the slide groove, a half gear is arranged on the slider, two half gears on the bow frame are meshed and connected with each other, a positioning plate is arranged on the two half gears, and the positioning plate is rotatably connected with the half gears; A second guide groove is provided in the middle of the inner wall of the arc-shaped base plate, and arc-shaped power plates are slidably arranged on both the left and right sides of the second guide groove, and a plurality of push rods are arranged on the outer wall of the arc-shaped power plate; The arc-shaped movable plate is provided with a plurality of notches, in which a first sliding sleeve is arranged, and the push rod obliquely passes through the first sliding sleeve and is slidably connected; The push rods on the two arc-shaped power plates are inclined in opposite directions, and the push rods on the two arc-shaped moving plates are inclined in opposite directions; A rotating screw sleeve is arranged on the first sliding sleeve, the rotating screw sleeve passes through the arc-shaped movable plate and is rotatably connected, a first arched plate is installed on the inner wall of the arc-shaped movable plate, the outer end of the rotating screw sleeve contacts the first arched plate, a first through opening is opened in the middle of the first arched plate, a first locking bolt is arranged in the first through opening, the first locking bolt passes through the first through opening and is screwed into the rotating screw sleeve; The push rod is rotatably connected to the arc-shaped power plate; It also includes an arc-shaped outer plate, which is located outside the multiple groups of clamping units. A plurality of guide rails are arranged on the inner wall of the arc-shaped outer plate. The guide rails are along the axis direction of the arc-shaped outer plate, and the arc-shaped base plate is slidably installed on the guide rails.

2. According to claim 1, a multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot, characterized in that: A plurality of adjustment openings are provided on the arc-shaped outer plate, a second sliding sleeve is installed on the outer wall of the arc-shaped base plate, the second sliding sleeve is inserted into the arc-shaped base plate, a first sliding rod is provided on the second sliding sleeve, the first sliding rod is slidably inserted into the second sliding sleeve, a threaded rod is installed on the outer end of the first sliding rod, an extrusion screw sleeve is threadedly mounted on the outer wall of the threaded rod, a top plate is obliquely and rotatably provided on both upper and lower sides of the outer wall of the extrusion screw sleeve, the outer end of the top plate contacts the inner wall of the adjustment opening, a pull plate is rotatably provided in the middle of the top plate, and the outer end of the pull plate is rotatably installed on the outer wall of the arc-shaped base plate; A second arched plate is contacted and arranged on the outer wall of the arc-shaped outer plate outside the regulating port, a second through opening is opened on the second arched plate, a second locking bolt is arranged on the second arched plate, and the second locking bolt passes through the second through opening and is screwed into the threaded rod.

3. A multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot according to claim 2, characterized in that: A sleeve is arranged inside the arc-shaped base plate, and two second sliding rods are slidably arranged inside the sleeve, and the outer ends of the two second sliding rods extend to the outside of the sleeve, and a right-angle plate is installed at the outer end of the second sliding rod, and the right-angle plate is rotatably installed on the arc-shaped power plate. A plurality of telescopic rods are installed at the bottom of the sleeve, and the fixed ends of the telescopic rods are installed on the arc-shaped base plate.

4. A multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot according to claim 3, characterized in that: An oil cylinder is installed on the sleeve, and the fixed end of the oil cylinder is installed on the arc-shaped base plate. A high-pressure oil tank is installed on the outer wall of the arc-shaped outer plate. A multi-way pipe and an oil guide pipe are connected to the high-pressure oil tank. Multiple output ends of the multi-way pipe are respectively connected to the oil cylinders on multiple arc-shaped base plates.

5. A multi-section clamping and fixing structure for welding a variable diameter pipe for conveying fluid in a sterilizing pot according to claim 4, characterized in that: The utility model also comprises a motor, which is installed on a bow-shaped frame in a group of clamping units, and the output end of the motor is drivingly connected with the extrusion wheel on the bow-shaped frame.

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