Tooling for a feed nozzle welding machine

Abstract

The application discloses a tool for a feeding pipe nozzle welding machine tool, which comprises a cover arranged on a to-be-welded electrolytic cell, reinforcing rods supported and fixed by an outer connecting rack above the cover, sleeve pipes fixedly connected to opposite ends of the two reinforcing rods, a shaft one arranged on the inner wall of the sleeve pipe, a heat insulation pad fixedly connected to the top of the shaft one and rotatably connected to the sleeve pipe, compression springs sleeved on the shaft one and movably connected to the heat insulation pad and the opposite surface of the sleeve pipe, an inner spiral groove arranged on the inner wall of the sleeve pipe, a sliding block fixedly connected to the surface of the shaft one and matched with the inner spiral groove, and an n-shaped frame fixedly connected to the bottom of the shaft one and penetrating through the cover. Through cooperation of the above-mentioned structures, the tool solves the problems that, in actual use, the welding of the feeding pipe nozzle of the electrolytic cell is carried out by manual work, there are few special tools, the labor intensity of workers is high, and the work efficiency is difficult to improve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical electrolytic cell processing, in particular to a tool for feeding pipe nozzle welding machine. BACKGROUND

[0002] When welding the feeding pipe nozzle of the electrolytic cell, the welding position of the feeding pipe nozzle of the electrolytic cell needs to be positioned, detected and checked whether there are defects such as incomplete penetration and serious oxidation. If defects occur, it will cause great economic damage to the user, and it is extremely likely to cause the feeding pipe nozzle of the electrolytic cell to be not tightly welded, harmful gas leakage and other major disasters. Therefore, the welding detection of the feeding pipe nozzle of the electrolytic cell is extremely important.

[0003] At present, the welding of the feeding pipe nozzle of the electrolytic cell is carried out by manual operation, and there are few special tools. The labor intensity of workers is large, and the work efficiency is difficult to improve. Therefore, we propose a tool for feeding pipe nozzle welding machine. SUMMARY

[0004] The purpose of the present application is to provide a tool for feeding pipe nozzle welding machine, which has the advantages of multiple welding and all-round isolation protection, and solves the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a tool for feeding pipe nozzle welding machine, comprising a cover body arranged on a to-be-welded electrolytic cell, a reinforcing rod supported and fixed by an external frame is arranged above the cover body, the opposite ends of the two reinforcing rods are fixedly connected with sleeves, the inner wall of the sleeve is provided with a shaft one, and the top of the shaft one is fixedly connected with a heat insulation pad through rotation.

[0006] A compression spring is sleeved on the shaft one, the opposite ends of the compression spring are movably connected with the heat insulation pad and the opposite surface of the sleeve, the inner wall of the sleeve is provided with an internal spiral groove, the surface of the shaft one is fixedly connected with a sliding block matched with the internal spiral groove, the bottom of the shaft one penetrates through the cover body and is fixedly connected with an n-shaped frame, a through groove is arranged on the arc-shaped contour of the cover body and an activity plate is slidably connected through the through groove, the bottom of the n-shaped frame is fixedly connected with an obliquely arranged push plate, the obliquely arranged push plate penetrates through the activity plate and is slidably connected with the activity plate, and the opposite ends of the two activity plates are fixedly connected with a welding gun head one for high-temperature welding of the feeding pipe nozzle and the feeding pipe base.

[0007] Preferably, the lower surface of the n-shaped frame is fixedly connected with an auxiliary welding equipment for welding the inner wall of the feeding pipe nozzle through rotation, the auxiliary welding equipment comprises a shaft two fixedly connected with the lower surface of the n-shaped frame, the surface of the shaft two is sleeved with a gear shaft sleeve, the upper surfaces of the two activity plates are fixedly connected with side plates, and the surfaces of the two side plates are respectively fixedly connected with a toothed plate one and a toothed plate two which are simultaneously engaged with the transmission of the gear shaft sleeve.

[0008] Preferably, the auxiliary welding device further comprises a connecting horizontal plate fixed on the surface of the second shaft, the lower surface of the connecting horizontal plate is fixedly connected with a memory alloy rod, the side surface of the second shaft is fixedly connected with a welding gun head two, the upper surface of the welding gun head two is fixedly connected with a pressure sensitive switch electrically connected with the welding gun head two, and the pressure sensitive switch is directly below the memory alloy rod.

[0009] Preferably, the movable plate is provided with a protection device for transferring heat in the feeding nozzle and supplementing protective gas in the cover, the protection device comprises an exhaust pipe, the top of the exhaust pipe penetrates through the upper surface of the cover and extends into the cover, the side of the to-be-welded electrolytic cell is provided with a piston cylinder, the opening on the piston cylinder faces the cover, the inner wall of the piston cylinder is slidably connected with a piston plate, one end of the piston plate facing the cover is fixedly connected with the movable plate, the inner wall of the exhaust pipe close to the bottom is fixedly connected with a one-way valve one, the end of the piston cylinder away from the cover is provided with a through hole and is fixedly connected with an air inlet pipe in communication with an external air source through the through hole, and the inner wall of the air inlet pipe is fixedly connected with a one-way valve two.

[0010] Preferably, the number of the welding gun head two on the second shaft is not less than eight, and the welding gun head two is vertically and linearly arranged on the second shaft.

[0011] Preferably, the movable plate is a rectangular plate, and the cover is provided with a rectangular through slot matched with the movable plate.

[0012] Preferably, the cover is made of transparent glass wiping material, and the surface is subjected to arc transition treatment.

[0013] Preferably, the end of the sliding block away from the first shaft is an arc surface, and the sliding block is slidably connected with the inner wall of the inner spiral groove through the arc surface thereon.

[0014] Compared with the prior art, the present application has the following advantages: the present application realizes the support and fixation of the whole device through the external rack;

[0015] Before use, the feeding nozzle and the feeding pipe base are placed on the feeding port of the to-be-welded electrolytic cell, the surface of the feeding nozzle close to the bottom is inserted into the feeding port, and the feeding nozzle and the feeding pipe base are placed on the to-be-welded electrolytic cell as a whole through the lower surface of the feeding pipe base, after the placement and preparation of the feeding nozzle and the feeding pipe base before welding, the cover is placed on the to-be-welded electrolytic cell, and the feeding nozzle and the feeding pipe base are covered in the cover.

[0016] The opening point of the welding gun head one is ignited to generate high-temperature jet flame to heat the feeding nozzle and the feeding pipe base.

[0017] At the same time, the heat insulation pad plate is manually pressed downward, so that the shaft and the slider thereon are synchronously lowered, and under the guidance of the track of the inner spiral groove, the slider is rotated along the track of the inner spiral groove while being lowered, and the shaft I is relatively rotated along the heat insulation pad plate.

[0018] Therefore, the continuous rotation of the n-shaped frame, the inclined push plate, the movable plate, the cover body and the welding gun head I is realized, so that the two welding gun heads I can perform the surrounding welding operation on the feed pipe base and the feed pipe nozzle, and the local heating is avoided, finally, through heating, the feed pipe nozzle and the feed pipe base and the part in contact with the to-be-welded electrolytic cell are in a molten state or a plastic state, and after cooling, welding can be realized.

[0019] Through the setting of the auxiliary welding device, the double welding effect on the feed pipe nozzle and the feed pipe base can be realized.

[0020] Through the setting of the protection device, the heat in the feed pipe nozzle can be transferred and the protective gas in the cover body can be supplemented.

[0021] Through the cooperation of the above structures, the problem that in the actual use process, the welding of the electrolytic cell feed pipe nozzle is performed by manual operation, and there are few special toolings, the labor intensity of workers is large, and the work efficiency is difficult to improve is solved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of the structure of the application;

[0023] Figure 2 It is a perspective view of the sleeve of the application;

[0024] Figure 3 It is a left view of the sleeve of the application;

[0025] Figure 4 It is an enlarged view of structure A in the application; Figure 3

[0026] Figure 5 It is a perspective view of the n-shaped frame of the application;

[0027] Figure 6 It is an enlarged view of structure B in the application; Figure 8

[0028] It is a front view of the piston cylinder of the application; Figure 7

[0029] It is a front view of the feed pipe nozzle of the application. Figure 8

[0030] ​​In the figure: 1, to be welded electrolytic cell; 2, cover; 3, reinforcing rod; 4, sleeve; 5, shaft one; 6, heat insulation pad; 7, compression spring; 8, inner spiral groove; 9, sliding block; 10, n-shaped frame; 11, movable plate; 12, inclined push plate; 13, welding torch head one; 14, feeding nozzle; 15, feeding pipe base; 16, shaft two; 17, gear shaft sleeve; 18, side plate; 19, toothed plate one; 20, toothed plate two; 21, connecting cross plate; 22, memory alloy rod; 23, welding torch head two; 24, pressure sensitive switch; 25, exhaust pipe; 26, piston cylinder; 27, piston plate; 28, one-way valve one; 29, air inlet pipe; 30, one-way valve two. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Embodiment 1

[0033] The present application provides a technical solution: a tool for a feeding nozzle welding machine tool, comprising a cover 2 arranged on a to-be-welded electrolytic cell 1, a reinforcing rod 3 supported and fixed by an external rack above the cover 2, the external rack is used to support and fix the whole device, and the reinforcing rod 3 is mainly supported and fixed by the external rack, the opposite ends of the two reinforcing rods 3 are fixedly connected with sleeves 4, the inner wall of the sleeve 4 is provided with a shaft one 5, and the top of the shaft one 5 is rotationally connected with a heat insulation pad 6;

[0034] The shaft one 5 is sleeved with a compression spring 7, the two ends of the compression spring 7 are movably connected with the opposite surfaces of the heat insulation pad 6 and the sleeve 4, the inner wall of the sleeve 4 is provided with an inner spiral groove 8, the heat insulation pad 6 is manually pressed downward, so that the shaft one 5 and the sliding block 9 thereon are synchronously moved downward, and under the guidance of the track of the inner spiral groove 8, the sliding block 9 is also rotated relative to the heat insulation pad 6 along the track of the inner spiral groove 8 while moving downward,

[0035] The surface of the shaft one 5 is fixedly connected with the sliding block 9 matched with the inner spiral groove 8, the bottom of the shaft one 5 penetrates the cover body 2 and is fixedly connected with the n-shaped frame 10, the arc-shaped contour of the cover body 2 is provided with the through slot and the movable plate 11 is slidingly connected through the through slot, the bottom of the n-shaped frame 10 is fixedly connected with the obliquely arranged push plate 12, the obliquely arranged push plate 12 penetrates the movable plate 11 and is slidingly connected with the movable plate 11, the opposite ends of the two movable plates 11 are fixedly connected with the welding gun head one 13 for high-temperature welding of the feeding pipe nozzle 14 and the feeding pipe base 15. The opening ignition on the welding gun head one 13 generates high-temperature jet flame to heat the feeding pipe nozzle 14 and the feeding pipe base 15.

[0036] Before use, the feeding pipe nozzle 14 and the feeding pipe base 15 are placed on the feeding port of the electrolytic cell 1 to be welded, the surface close to the bottom of the feeding pipe nozzle 14 is inserted into the feeding port, and the feeding pipe nozzle 14 and the feeding pipe base 15 are placed on the electrolytic cell 1 to be welded as a whole through the lower surface of the feeding pipe base 15, so as to complete the placement preparation before welding of the feeding pipe nozzle 14 and the feeding pipe base 15.

[0037] The cover body 2 is placed on the electrolytic cell 1 to be welded and the feeding pipe nozzle 14 and the feeding pipe base 15 are covered therein.

[0038] Thus, the n-shaped frame 10, the obliquely arranged push plate 12, the movable plate 11, the cover body 2 and the welding gun head one 13 can be continuously rotated, so that the two welding gun heads one 13 can perform circumferential welding operation on the feeding pipe base 15 and the feeding pipe nozzle 14, avoiding local heating, and finally, through heating, the parts of the feeding pipe nozzle 14 and the feeding pipe base 15 in contact with the electrolytic cell 1 to be welded are in a molten state or a plastic state, and after cooling, welding can be realized.

[0039] Further, the lower surface of the n-shaped frame 10 is fixedly connected with the auxiliary welding equipment for welding the inner wall of the feeding pipe nozzle 14, and through the setting of the auxiliary welding equipment, the double welding effect of the feeding pipe nozzle 14 and the feeding pipe base 15 can be realized.

[0040] The auxiliary welding equipment comprises the shaft two 16 fixedly connected with the n-shaped frame 10, the surface of the shaft two 16 is sleeved with the gear shaft sleeve 17, the upper surfaces of the two movable plates 11 are fixedly connected with the side plates 18, and the surfaces of the two side plates 18 are respectively fixedly connected with the toothed plate one 19 and the toothed plate two 20 simultaneously engaged with the gear shaft sleeve 17 for transmission.

[0041] In use, reference is made to Figure 5, through the cover 2 after the activity board 11, its trajectory on the cover 2 is limited, because the inclined push plate 12 is placed at an angle of inclination, and the inclined push plate 12 penetrates the movable plate 11 and is connected with the movable plate 11 slidingly, so that when the n-shaped frame 10 with two inclined push plates 12 moves downward, the two movable plates 11 are guided to move towards each other, thereby making the distance between the welding torch head 13 and the feeding pipe nozzle 14 and the feeding pipe base 15 closer, and the heating effect better;

[0042] At the same time, the side plates 18 on the two movable plates 11 move towards each other synchronously, so that the toothed plate 19 and the toothed plate 20 can drive the gear shaft sleeve 17 engaged to rotate, so that the gear shaft sleeve 17 with the shaft 16 rotates on the n-shaped frame 10, and with the descent of the n-shaped frame 10, the shaft 16 with the gear shaft sleeve 17 descends while extending into the feeding pipe nozzle 14.

[0043] Further, the auxiliary welding device further comprises a connecting cross plate 21 fixed on the surface of the shaft 16, the lower surface of the connecting cross plate 21 is fixedly connected with a memory alloy rod 22, the memory alloy rod 22 is an iron-nickel alloy, the side surface of the shaft 16 is fixedly connected with a welding torch head 23, the upper surface of the welding torch head 23 is fixedly connected with a pressure sensitive switch 24 electrically connected with the welding torch head 23, and the pressure sensitive switch 24 is directly below the memory alloy rod 22.

[0044] Reference Figure 6 and Figure 8 .

[0045] With the descent and rotation of the shaft 16, the connecting cross plate 21, the memory alloy rod 22, the welding torch head 23 and the pressure sensitive switch 24 on the shaft 16 rotate synchronously. At room temperature, there is a gap between the memory alloy rod 22 and the pressure sensitive switch 24, and no contact occurs. Once the memory alloy rod 22 is affected by temperature and becomes longer, it will come into contact and extrusion with the upper surface of the pressure sensitive switch 24, so that the welding torch head 23 is connected to the power supply, the flame jet is turned on, and the inner wall of the feeding pipe nozzle 14 is heated.

[0046] And in use, the place heated by the welding torch head one 13 is the place where the feed pipe nozzle 14, the feed pipe base 15 and the electrolytic cell 1 to be welded contact, and the memory alloy rod 22 will grow at the place in the feed pipe nozzle 14 opposite to the heated place, and the corresponding welding torch head two 23 will heat the contact part of the feed pipe nozzle 14, the feed pipe base 15 and the electrolytic cell 1 to be welded from inside. Realize double heating, improve the welding efficiency, the rotation of the shaft two 16 is relative to the n-shaped frame 10, and the n-shaped frame 10 itself will also rotate relative to the feed pipe nozzle 14, so that the rotating speed of the shaft two 16 relative to the feed pipe nozzle 14 will be higher, and the heating will be more balanced. And with the falling, the memory alloy rod 22 away from the high temperature zone will contract when it is cold, and then it will be out of contact with the pressure sensitive switch 24, and then the precise opening and heating of the welding torch head two 23 will be realized.

[0047] Further, the movable plate 11 is provided with a protection device for transferring heat in the feed pipe nozzle 14 and supplementing protective gas in the cover body 2. Through the arrangement of the protection device, the heat in the feed pipe nozzle 14 can be transferred and the protective gas in the cover body 2 can be supplemented.

[0048] The protection device comprises an exhaust pipe 25, the top of the exhaust pipe 25 penetrates the upper surface of the cover body 2 and extends into the cover body 2, a piston cylinder 26 is arranged on the side of the electrolytic cell 1 to be welded, an opening on the piston cylinder 26 faces the cover body 2, a piston plate 27 is slidably connected to the inner wall of the piston cylinder 26, one end of the piston plate 27 facing the cover body 2 is fixedly connected to the movable plate 11, a one-way valve one 28 is fixedly connected to the inner wall of the exhaust pipe 25 close to the bottom, a through hole is formed in the end of the piston cylinder 26 away from the cover body 2, and an air inlet pipe 29 in communication with an external gas source is fixedly connected to the through hole, and a one-way valve two 30 is fixedly connected to the inner wall of the air inlet pipe 29.

[0049] In use, referring to Figure 1 and Figure 7 .

[0050] Through the reciprocating movement of the movable plate 11, the piston plate 27 can be driven to reciprocate in the piston cylinder 26, and the piston cylinder 26 is supported and fixed by the exhaust pipe 25.

[0051] When the piston plate 27 moves in the piston cylinder 26 away from the cover body 2, the space in the piston cylinder 26 will be reduced, the gas pressure will increase, and the high-pressure gas will be transferred to the cover body 2 through the one-way valve one 28 and the exhaust pipe 25, so that the protective gas can be supplemented in the cover body 2. At the same time, once the protective gas in the cover body 2 continues to increase, the protective gas will continue to flow downward through the space in the feed pipe nozzle 14, the transfer of the gas can transfer the heat in the feed pipe nozzle 14 downward, and avoid that the welding torch head two 23 at the higher position is affected and opened by the flame jet. Realize precise heating operation.

[0052] When the piston plate 27 in the piston cylinder 26 moves towards the cover body 2, the space in the piston cylinder 26 increases, the gas pressure decreases, and the air inlet pipe 29 connected to the external gas source is used to transfer the protective gas in the external gas source to the piston cylinder 26 through the one-way valve 30, thereby completing the replenishment of the gas in the piston cylinder 26. Such reciprocation can continuously replenish the protective gas in the cover body 2 and realize downward heat transfer.

[0053] Further, the number of welding torch heads 23 on the shaft 16 is not less than eight, and the welding torch heads 23 are vertically and linearly arranged on the shaft 16.

[0054] Reference Figure 8 By arranging not less than eight welding torch heads 23, the accuracy of welding and heating of the inner wall of the feeding nozzle 14 by the welding torch heads 23 can be improved.

[0055] Further, the movable plate 11 is a rectangular plate, and the cover body 2 is provided with a rectangular through slot matched with the movable plate 11.

[0056] Reference Figure 1 , Figure 2 and Figure 5 By arranging the movable plate 11 as a rectangular plate, the sliding of the movable plate 11 on the cover body 2 is more stable, thereby ensuring the stability of the device during use.

[0057] Further, the cover body 2 is made of transparent glass material, and the surface is treated by arc transition.

[0058] By arranging the cover body 2 to be made of transparent glass material, the internal welding condition can be observed conveniently, and the arc transition treatment can protect the user.

[0059] Embodiment 2

[0060] The same as embodiment one, and further, the end of the sliding block 9 away from the shaft 5 is an arc surface, and the sliding block 9 is connected to the inner wall of the inner spiral groove 8 through the arc surface thereon.

[0061] By arranging the arc surface on the sliding block 9, the sliding of the sliding block 9 in the inner spiral groove 8 is more smooth, and the device is not easy to be stuck, thereby further improving the stability of the device during use.

[0062] Working principle: when the feeding nozzle welding machine tool is used, the device is supported and fixed by the external rack.

[0063] Before use, place the feed nozzle 14 and feed tube base 15 on the feed inlet of the electrolytic cell 1 to be welded, so that the surface of the feed nozzle 14 near the bottom is inserted into the feed inlet, and the feed nozzle 14 and feed tube base 15 are placed on the electrolytic cell 1 to be welded by the lower surface of the feed tube base 15. After the feed nozzle 14 and feed tube base 15 have completed the placement preparation before welding, the cover 2 is then placed on the electrolytic cell 1 to be welded and the feed nozzle 14 and feed tube base 15 are covered in it.

[0064] The welding torch head 13 is ignited to generate a high-temperature jet flame that heats the feed nozzle 14 and the feed tube base 15.

[0065] At the same time, manually press down on the heat insulation pad 6, causing the shaft 5 to move down synchronously with the slider 9 on it. Guided by the trajectory on the inner spiral groove 8, the slider 9 moves down and, along the trajectory of the inner spiral groove 8, causes the shaft 5 to rotate relative to the heat insulation pad 6.

[0066] This allows for the continuous rotation of the n-shaped frame 10, the inclined push plate 12, the movable plate 11, the cover 2, and the welding gun head 13, enabling the two welding gun heads 13 to perform a circumferential welding operation on the feed tube base 15 and the feed tube nozzle 14, avoiding localized heating. Ultimately, through heating, the parts of the feed tube nozzle 14 and the feed tube base 15 that come into contact with the electrolytic cell 1 to be welded reach a molten state or a plastic state, and welding can be achieved after cooling.

[0067] By setting up auxiliary welding equipment, a dual welding effect can be achieved on the feed nozzle 14 and the feed tube base 15.

[0068] When using, refer to Figure 5 After the movable plate 11 passes through the cover 2, its movement trajectory on the cover 2 is restricted. Since the inclined push plate 12 is placed at an inclined angle and the inclined push plate 12 passes through the movable plate 11 and is slidably connected to the movable plate 11, when the n-shaped frame 10 moves down with the two inclined push plates 12, the two movable plates 11 will be guided to move towards each other. This makes the distance between the welding gun head 13 and the feed nozzle 14 and the feed tube base 15 closer, and the heating effect is better.

[0069] Simultaneously, the side plates 18 on the two movable plates 11 move towards each other, allowing the gear plate 19 and gear plate 20 to drive the meshed gear sleeve 17 to rotate. This causes the gear sleeve 17, along with shaft 2 16, to rotate on the n-shaped frame 10. As the n-shaped frame 10 descends, shaft 2 16, along with the gear sleeve 17, descends and extends into the feed nozzle 14. (Reference) Figure 6 and Figure 8 .

[0070] With the downward movement and rotation of the shaft two 16, the connecting horizontal plate 21, the memory alloy rod 22, the welding torch head two 23 and the pressure sensitive switch 24 on it rotate synchronously. In normal temperature state, there is a gap between the memory alloy rod 22 and the pressure sensitive switch 24, and no contact occurs. Once the memory alloy rod 22 is affected by temperature and becomes longer, it will contact and press the upper surface of the pressure sensitive switch 24, so that the welding torch head two 23 is connected to the power supply and the flame jet is turned on to heat the inner wall of the feed pipe nozzle 14.

[0071] When in use, the place heated by the welding torch head one 13 is the place where the feed pipe nozzle 14, the feed pipe base 15 and the electrolytic cell 1 to be welded contact. The memory alloy rod 22 grows and the corresponding welding torch head two 23 heats the contact part of the feed pipe nozzle 14, the feed pipe base 15 and the electrolytic cell 1 to be welded from the inside. The rotation of the shaft two 16 is relative to the n-shaped frame 10, and the n-shaped frame 10 itself also rotates relative to the feed pipe nozzle 14, so that the rotation speed of the shaft two 16 relative to the feed pipe nozzle 14 is higher, and the heating is more balanced. With the downward movement, the memory alloy rod 22 far from the high temperature zone shrinks when it is cold, and then it is out of contact with the pressure sensitive switch 24, and then the welding torch head two 23 is accurately turned on and heated.

[0072] Through the setting of the protection device, the heat in the feed pipe nozzle 14 can be transferred and the protective gas in the cover body 2 can be supplemented.

[0073] When in use, refer to Figure 1 and Figure 7 .

[0074] Through the reciprocating movement of the movable plate 11, the reciprocating movement of the piston plate 27 in the piston cylinder 26 is driven, and the piston cylinder 26 is supported and fixed by the exhaust pipe 25.

[0075] When the piston plate 27 moves away from the cover body 2 in the piston cylinder 26, the space in the piston cylinder 26 decreases, the gas pressure increases, the high pressure gas is transferred to the cover body 2 through the one-way valve one 28 and the exhaust pipe 25, so that the protective gas is supplemented in the cover body 2. At the same time, once the protective gas in the cover body 2 continuously increases, the protective gas will continue to flow downward through the space in the feed pipe nozzle 14, the heat in the feed pipe nozzle 14 can be transferred downward, and the welding torch head two 23 at the higher position is not affected and is turned on by the flame jet. Precise heating operation is realized.

[0076] When the piston plate 27 in the piston cylinder 26 moves towards the cover body 2, the space in the piston cylinder 26 increases, the air pressure decreases, and the air inlet pipe 29 connected with the external air source is able to transfer the protective gas in the external air source into the piston cylinder 26 through the one-way valve 30, so as to complete the replenishment of the gas in the piston cylinder 26. Such reciprocation can realize the continuous replenishment of the protective gas in the cover body 2 and realize the downward transfer of heat.

[0077] Through the cooperation of the above structures, the problem that in the actual use process, the welding of the electrolytic cell feeding nozzle is carried out by manual operation, there are few special toolings, the labor intensity of workers is large, and the work efficiency is difficult to improve is solved

[0078] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for a feed nozzle, characterized by: Includes a cover (2) set on the electrolytic cell (1) to be welded, and a reinforcing rod (3) supported and fixed by an external frame is provided above the cover (2). A sleeve (4) is fixedly connected to the opposite ends of the two reinforcing rods (3). A shaft (5) is provided on the inner wall of the sleeve (4). A heat insulation pad (6) is rotatably connected to the top of the shaft (5). A compression spring (7) is fitted on the shaft (5). The two ends of the compression spring (7) are movably connected to the opposite surfaces of the heat insulation pad (6) and the sleeve (4). An inner spiral groove (8) is provided on the inner wall of the sleeve (4). A slider (9) that cooperates with the inner spiral groove (8) is fixedly connected to the surface of the shaft (5). An n-shaped frame (10) is fixedly connected to the bottom of the shaft (5) through the cover (2). A through groove is provided on the arc-shaped contour of the cover (2), and a movable plate (11) is slidably connected through the through groove. An inclined push plate (12) is fixedly connected to the bottom of the n-shaped frame (10). The inclined push plate (12) passes through the movable plate (11) and is slidably connected to the movable plate (11). A welding gun head (13) for high-temperature welding of the feed nozzle (14) and the feed tube base (15) is fixedly connected to the opposite ends of the two movable plates (11). The lower surface of the n-shaped frame (10) is rotatably connected to an auxiliary welding device for welding the inner wall of the feed nozzle (14). The auxiliary welding device includes a shaft two (16) rotatably connected to the lower surface of the n-shaped frame (10). A gear bushing (17) is fitted on the surface of the shaft two (16). Side plates (18) are fixedly connected to the upper surfaces of the two movable plates (11). A toothed plate one (19) and a toothed plate two (20) that mesh with the gear bushing (17) are fixedly connected to the surfaces of the two side plates (18). The side of the shaft 2 (16) is fixedly connected to the welding gun head 2 (23). Manually press down on the heat insulation pad (6) so that the shaft (5) moves down synchronously with the slider (9) on it. Under the guidance of the trajectory on the inner spiral groove (8), the slider (9) moves down and also rotates the shaft (5) relative to the heat insulation pad (6) along the trajectory of the inner spiral groove (8). This enables the continuous rotation of the n-shaped frame (10), the inclined push plate (12), the movable plate (11), the cover (2), and the welding gun head (13), so that the two welding gun heads (13) can perform a circumferential welding operation on the feed tube base (15) and the feed tube nozzle (14). When the n-shaped frame (10) moves downward with the two inclined push plates (12), the two movable plates (11) will be guided to move towards each other; Meanwhile, the side plates (18) on the two movable plates (11) move synchronously towards each other, so that the tooth plate one (19) and the tooth plate two (20) can drive the gear sleeve (17) engaged by them to rotate, so that the gear sleeve (17) with the shaft two (16) rotates on the n-shaped frame (10), and with the descent of the n-shaped frame (10), the shaft two (16) with the gear sleeve (17) will also extend into the feeding nozzle (14) while descending.

2. The welding tool for a feed nozzle according to claim 1, characterized in that: The auxiliary welding device further comprises a connecting horizontal plate (21) fixed on the surface of the shaft two (16), a lower surface of the connecting horizontal plate (21) is fixedly connected with a memory alloy rod (22), an upper surface of the welding gun head two (23) is fixedly connected with a pressure sensitive switch (24) electrically connected with the welding gun head two (23), and the pressure sensitive switch (24) is directly below the memory alloy rod (22).

3. The welding tool for a feed tube as defined in claim 1, characterized in that: The movable plate (11) is provided with a protection device for transferring heat in the feeding nozzle (14) and supplementing protective gas in the cover body (2), the protection device comprises an exhaust pipe (25), a top of the exhaust pipe (25) penetrates through an upper surface of the cover body (2) and extends into the cover body (2), a side of the to-be-welded electrolytic cell (1) is provided with a piston cylinder (26), an opening on the piston cylinder (26) faces the cover body (2), an inner wall of the piston cylinder (26) is slidably connected with a piston plate (27), one end of the piston plate (27) facing the cover body (2) is fixedly connected with the movable plate (11), an inner wall of the exhaust pipe (25) close to the bottom is fixedly connected with a one-way valve one (28), a through hole is formed in one end of the piston cylinder (26) away from the cover body (2), and a gas inlet pipe (29) in communication with an external gas source is fixedly connected through the through hole, and an inner wall of the gas inlet pipe (29) is fixedly connected with a one-way valve two (30).

4. The welding tool for a feed tube as defined in claim 1, characterized in that: The number of the welding gun head two (23) on the shaft two (16) is not less than eight, and the welding gun head two (23) is vertically and linearly arranged on the shaft two (16).

5. The welding tool for a feed tube as defined in claim 1, characterized in that: The movable plate (11) is a rectangular plate, and the cover body (2) is provided with a rectangular through slot matched with the movable plate (11).

6. The welding tool for a feed tube as defined in claim 1, characterized in that: The cover body (2) is made of transparent glass wiping material, and the surface is subjected to arc transition treatment.

7. The welding tool for a feed tube as defined in claim 1, characterized in that: An end of the sliding block (9) away from the shaft one (5) is an arc surface, and the sliding block (9) is slidably connected with the inner wall of the inner spiral groove (8) through the arc surface thereon.

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