Shell plasma welding system based on axial flow pump production

Abstract

The invention discloses a shell plasma welding system based on axial flow pump production, and relates to the technical field of axial flow pump production, the shell plasma welding system comprises a base, a through hole is formed in the base, a balance shaft is rotatably connected in the through hole, a balance seat is fixedly connected to the surface of the balance shaft, and a bearing assembly is arranged on the upper surface of the balance seat; and offset assemblies are arranged at the two ends of the balance shaft, and welding assemblies are arranged on the offset assemblies. According to the shell plasma welding system based on axial flow pump production, the bearing assembly is arranged to bear the shell of the axial flow pump, and when the shell is subjected to thermal deformation due to welding, the bearing assembly loses balance and deviates towards one side, the deviation assembly is driven to deviate together, and therefore the shell is subjected to plasma welding; and then the deviation assembly drives the welding assembly to generate reverse deviation, so that the welding direction of the welding assembly to the shell is changed to correct thermal deformation, and the negative effect of movement generated by thermal deformation during shell welding is converted into the positive effect capable of changing the welding direction.

Description

Technical Field

[0001] The invention relates to the technical field of axial flow pump production, and in particular to a shell plasma welding system based on axial flow pump production. Background Art

[0002] Axial flow pump is a common fluid conveying equipment, widely used in industry, agriculture, municipal administration and other fields. It generates axial thrust through the rotating impeller to transport the liquid in the axial direction.

[0003] The shell of an axial flow pump is usually asymmetrical, mostly with a variable diameter pipe, one end of which is a pipe for fluid circulation and the other end is an area for the installation of the drive element. Therefore, the standard parts of the shell of an axial flow pump usually need to be welded with special equipment.

[0004] Thermal deformation during welding is a common problem in welding engineering. Thermal deformation refers to the phenomenon that the shape and size of the workpiece change due to local heating and cooling during welding. Especially for large structural parts such as axial flow pump housings, thermal deformation is often encountered during welding. Correcting these thermally deformed housings will waste a lot of time and materials, and when the deformation is too large, it may even cause the housing to be scrapped, resulting in economic losses. Therefore, how to control the generation of thermal deformation during welding is a difficult problem that needs to be solved urgently in the current welding of axial flow pump housings. Summary of the invention

[0005] The purpose of the present invention is to provide a shell plasma welding system based on axial flow pump production to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A shell plasma welding system based on an axial flow pump comprises a base, a through hole is provided on the base, a balancing shaft is rotatably connected in the through hole, a balancing seat is fixedly connected to the surface of the balancing shaft, a bearing assembly is provided on the upper surface of the balancing seat, an offset assembly is provided at both ends of the balancing shaft, and a welding assembly is provided on the offset assembly; When the shell supported by the supporting component is thermally deformed due to welding, the supporting component loses balance, and the offset component is offset, thereby driving the welding component to offset in the opposite direction, thereby changing the direction of the welding section to correct the thermal deformation.

[0007] As a further preferred solution in the embodiment of the present invention, the bearing assembly includes a balance plate connected to the upper surface of the balance seat, and two receiving seats are fixedly provided on the upper surface of the balance plate, and an abutment plate is slidably provided at each end of the balance plate.

[0008] As a further preferred solution in the embodiments of the present invention, a housing is placed on the two receiving seats, one side surface of the two abutting plates abuts against both ends of the housing, and a welding seam is provided on the housing.

[0009] As a further preferred solution in the embodiments of the present invention, the offset assembly includes an offset seat connected to the outer end of the balance shaft, and an offset shaft is connected to one side surface of the offset seat, and a transmission bar is connected to one end of the offset shaft, and an offset bar is connected to each of the two ends of the offset seat.

[0010] As a further preferred solution in the embodiments of the present invention, the welding assembly includes a fixing frame rotatably connected to one end of the transmission bar, and a counterweight seat is fixedly connected to one end of the fixing frame, and a counterweight block is arranged in the counterweight seat, and a fixing rod is fixedly connected to the other end of the fixing frame, and a fixing strip is fixedly connected to the upper surface of the fixing rod.

[0011] As a further preferred solution in the embodiments of the present invention, the welding assembly further includes a connecting seat fixedly connected to one side surface of the fixing rod, and a driving motor is arranged on one side of the connecting seat, and a pulley is arranged at each of the two ends of the connecting seat, and a transmission belt is rotatably connected between the two pulleys, and a driving gear is connected to each of the two ends of the two pulleys, and the output end of the driving motor penetrates through the connecting seat and is connected to one end of one of the pulleys.

[0012] As a further preferred solution in the embodiments of the present invention, the welding assembly further includes a welding seat fixedly connected to one end of the fixing strip, and a transmission gear ring is rotatably connected to one end of the welding seat, and a connecting rod is connected to the other end of the welding seat, and a plasma welding torch is arranged at one end of the connecting rod.

[0013] As a further preferred solution in the embodiments of the present invention, a shock-absorbing shaft is connected to one side surface of the base, two shock-absorbing arms arranged in opposite directions are rotatably connected to the surface of the shock-absorbing shaft, a shock-absorbing strip is connected to each of the side surfaces of the two shock-absorbing arms, one end outer side surfaces of the two shock-absorbing strips respectively abut against the two offset bars, a shock absorber is arranged on the inner side surface of each of the same ends of the two shock-absorbing strips, and a shock-absorbing spring is connected between the two shock absorbers.

[0014] In the above technical solution, the beneficial effects of a housing plasma welding system based on the production of an axial flow pump provided by the present invention are as follows: The present invention provides a bearing assembly to bear the housing of the axial flow pump. When the housing generates thermal deformation due to welding, resulting in the loss of balance of the bearing assembly and offsetting to one side, it drives the offset assembly to offset together, and further enables the offset assembly to drive the welding assembly to generate a reverse offset, thereby changing the welding direction of the welding assembly to the housing to correct the thermal deformation, and further converting the negative effect of the movement caused by the thermal deformation during the welding of the housing into a positive effect that can change the welding direction.

[0015] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the present disclosure.

[0016] This application document provides an overview of various implementations or examples of the technologies described in the present disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0018] Figure 1 Overall structure schematic diagram provided for an embodiment of the present invention; Figure 2 Overall structure schematic diagram from another perspective provided for an embodiment of the present invention; Figure 3 Provided for an embodiment of the present invention Figure 2 Enlarged structure schematic diagram at A in Figure 4 Provided for an embodiment of the present invention Figure 2 Enlarged structure schematic diagram at B in Figure 5 Overall structure schematic diagram from the rear perspective provided for an embodiment of the present invention; Figure 6 Provided for an embodiment of the present invention Figure 5 Enlarged structure schematic diagram at C in Figure 7 Partial structure schematic diagram provided for an embodiment of the present invention; Figure 8 Provided for an embodiment of the present invention Figure 7 Enlarged structure schematic diagram at D in

[0019] Description of the reference numerals: 1. Base; 101. Balance shaft; 102. Balance seat; 103. Balance plate; 104. Bearing seat; 105. Contact plate; 2. Offset seat; 201. Offset rod; 202. Offset shaft; 203. Transmission bar; 3. Shock-absorbing shaft; 301. Shock-absorbing arm; 302. Shock-absorbing strip; 303. Shock-absorbing spring; 304. Shock absorber; 4. Fixed frame; 401. Counterweight seat; 402. Counterweight block; 403. Fixed rod; 404. Fixed strip; 5. Welding seat; 501. Transmission gear ring; 502. Driving gear; 503. Pulley; 504. Transmission belt; 505. Connecting seat; 506. Driving motor; 507. Connecting rod; 508. Plasma welder; 6. Housing; 601. Welding seam. Detailed implementation manner

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0021] Please refer to Figure 1 - Figure 8 , a plasma welding system for the housing produced based on an axial flow pump, including a base 1. A through hole is provided on the base 1. A balance shaft 101 is rotatably connected in the through hole. A balance seat 102 is fixedly connected to the surface of the balance shaft 101. A bearing assembly is provided on the upper surface of the balance seat 102. Offset assemblies are provided at both ends of the balance shaft 101. A welding assembly is provided on the offset assemblies; When the housing carried on the bearing assembly undergoes thermal deformation due to welding, so that the bearing assembly loses balance and the offset assembly generates an offset, the welding assembly is driven to generate a reverse offset, thereby changing the welding section direction to correct the thermal deformation.

[0022] In the present invention, by setting a bearing assembly to carry the housing of the axial flow pump, when the housing undergoes thermal deformation due to welding, resulting in the bearing assembly losing balance and offsetting to one side, the offset assembly is driven to offset together. Furthermore, the offset assembly drives the welding assembly to generate a reverse offset, thereby changing the welding direction of the welding assembly for the housing to correct the thermal deformation. Thus, the negative effect of the movement caused by the thermal deformation during the welding of the housing is converted into a positive effect of being able to change the welding direction.

[0023] In the further provided embodiment of the present invention, the bearing assembly includes a balance plate 103 connected to the upper surface of the balance seat 102. Two bearing seats 104 are fixedly arranged on the upper surface of the balance plate 103. One contact plate 105 is slidably arranged at each end of the balance plate 103.

[0024] Further, after the housing is placed on the receiving seat 104, slide the abutting plate 105 to both ends of the balance plate 103 so that the abutting plate 105 abuts against both ends of the housing to prevent the housing from slipping.

[0025] Furthermore, after the welding is completed, slide the abutting plate 105 downwards so that the outer shell can be taken out.

[0026] In an embodiment further provided by the present invention, an outer shell 6 is placed on two receiving seats 104, one side surface of two abutting plates 105 abuts against both ends of the outer shell 6, and a welding seam 601 is provided on the outer shell 6.

[0027] Further, the outer shell 6 is composed of two left and right sections of the housing, and the position of the welding seam 601 is at the connection of the two sections of the housing.

[0028] Furthermore, the balance seat 102 is located below the center of gravity of the entire loading assembly including the outer shell 6 thereon, rather than at the central position.

[0029] In an embodiment further provided by the present invention, the offset assembly includes an offset seat 2 connected to the outer end of the balance shaft 101, and an offset shaft 202 is connected to one side surface of the offset seat 2, and a transmission bar 203 is connected to one end of the offset shaft 202, and an offset bar 201 is connected to each end of the offset seat 2.

[0030] Specifically, when the outer shell 6 is being welded, due to thermal deformation, the loading assembly including the outer shell 6 thereon loses balance and deflects downward to one side. The entire loading assembly including the outer shell 6 thereon rotates around the balance shaft 101 to one side and drives the offset shaft 202 to rotate together, so that the offset seat 2 rotates and deflects, and drives the transmission bar 203 to rotate.

[0031] In an embodiment further provided by the present invention, the welding assembly includes a fixing frame 4 rotatably connected to one end of the transmission bar 203, and a counterweight seat 401 is fixedly connected to one end of the fixing frame 4, and a counterweight block 402 is arranged inside the counterweight seat 401, and a fixing rod 403 is fixedly connected to the other end of the fixing frame 4, and a fixing strip 404 is fixedly connected to the upper surface of the fixing rod 403.

[0032] Further, the weight of the counterweight block 402 is the same as that of the welding assembly on the other side, so that the center of gravity position of all the parts on the fixing frame 4 is the same as that of the loading assembly including the outer shell 6 thereon.

[0033] Furthermore, the connection position of the transmission bar 203 and the fixing frame 4 is located at the center of gravity position of the entire system, that is, the center of gravity position of the loading assembly including the outer shell 6 thereon.

[0034] Specifically, when the loading assembly rotates to one side, the transmission bar 203 rotates to drive the fixing frame 4 to rotate in the opposite direction.

[0035] In an embodiment further provided by the present invention, the welding assembly further includes a connecting seat 505 fixedly connected to one side surface of the fixed rod 403. A driving motor 506 is provided on one side of the connecting seat 505. A pulley 503 is provided at each end of the connecting seat 505. A transmission belt 504 is rotatably connected between the two pulleys 503. A driving gear 502 is connected to one end of each of the two pulleys 503. The output end of the driving motor 506 penetrates through the connecting seat 505 and is connected to one end of one of the pulleys 503.

[0036] Specifically, the driving motor 506 drives one of the pulleys 503 to rotate. Under the driving action of the transmission belt 504, the two pulleys 503 rotate synchronously, thereby driving the two driving gears 502 to rotate synchronously.

[0037] In an embodiment further provided by the present invention, the welding assembly further includes a welding seat 5 fixedly connected to one end of the fixed strip 404. A transmission toothed ring 501 is rotatably connected to one end of the welding seat 5. A connecting rod 507 is connected to the other end of the welding seat 5. A plasma welding torch 508 is provided at one end of the connecting rod 507.

[0038] Further, the plasma welding torch 508 is initially perpendicular to the weld seam 601 and performs welding in the vertical direction.

[0039] Furthermore, during welding, the housing 6 is inserted through the hole between the welding seat 5 and the transmission toothed ring 501 for bearing welding. After welding is completed, it is withdrawn to complete the welding.

[0040] Specifically, the two driving gears 502 drive the transmission toothed ring 501 to rotate one week on the welding seat 5 to accelerate the welding speed and prevent over - welding due to the weld joint staying at the same place for too long.

[0041] In an embodiment further provided by the present invention, a shock - absorbing shaft 3 is connected to one side surface of the base 1. Two shock - absorbing arms 301 arranged in opposite directions are rotatably connected to the surface of the shock - absorbing shaft 3. A shock - absorbing strip 302 is connected to the side surface of each of the two shock - absorbing arms 301. The outer side surfaces of one end of the two shock - absorbing strips 302 are respectively abutted against the two offset rods 201. A shock absorber 304 is provided on the inner side surface of the same end of the two shock - absorbing strips 302. A shock - absorbing spring 303 is connected between the two shock absorbers 304.

[0042] Further, the shock absorber 304 is used to eliminate the self - pulsation of the shock - absorbing spring 303.

[0043] Specifically, when the offset seat 2 rotates and offsets, the offset rod 201 on the offset side contacts the shock-absorbing strip 302 connected thereto, causing the shock-absorbing arm 301 thereon to rotate around the shock-absorbing shaft 3 as the axis, while the other shock-absorbing arm 301 remains stationary without being driven, thereby compressing the shock-absorbing spring 303 to slow down the offset speed of the load-bearing assembly and prevent excessive angular rotation from causing offset at the welding position.

[0044] In the present invention, first, the outer shell 6 is placed on the receiving seat 104, and the abutting plate 105 abuts against both ends of the outer shell 6. Subsequently, the driving motor 506 and the plasma welding torch 508 are started, causing the driving motor 506 to drive one of the pulleys 503 to rotate. Under the driving action of the transmission belt 504, the two pulleys 503 rotate synchronously, thereby driving the two driving gears 502 to rotate synchronously, causing the transmission gear ring 501 to rotate one week on the welding seat 5, and further causing the plasma welding torch 508 to rotate one week to weld the weld seam 601; if the outer shell 6 loses balance due to thermal deformation during welding and the load-bearing assembly including the outer shell 6 thereon deflects and presses downward to one side, the entire load-bearing assembly including the outer shell 6 thereon rotates to one side around the balance shaft 101 as the axis, and drives the offset shaft 202 to rotate together, so that the offset seat 2 rotates and offsets, and drives the transmission strip 203 to rotate, thereby driving the fixing frame 4 to rotate in the reverse direction, and further causing the plasma welding torch 508 to be driven to perform an angular transformation, so that the direction of the welding port is no longer perpendicular to the weld seam 601, but biased towards the upwardly warped side, so that the welding section thereof undergoes an angular change for correcting thermal deformation, and the outer shell 6 returns to the balanced position for vertical welding.

[0045] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A shell plasma welding system produced based on an axial flow pump, comprising a base (1), characterized in that: The base (1) is provided with a through hole, a balance shaft (101) is rotatably connected in the through hole, a balance seat (102) is fixedly connected to the surface of the balance shaft (101), a bearing assembly is arranged on the upper surface of the balance seat (102), offset assemblies are arranged at both ends of the balance shaft (101), and a welding assembly is arranged on the offset assemblies; When the housing carried on the bearing assembly undergoes thermal deformation due to welding, the bearing assembly loses balance, and after the offset assemblies generate offsets, the welding assembly is driven to generate reverse offsets, thereby changing the direction of the welding section to correct the thermal deformation.

2. The housing plasma welding system based on the production of axial flow pumps according to claim 1, characterized in that, The bearing assembly includes a balance plate (103) connected to the upper surface of the balance seat (102), two receiving seats (104) are fixedly arranged on the upper surface of the balance plate (103), and a butting plate (105) is slidably arranged at each end of the balance plate (103).

3. The plasma welding system for the housing produced based on an axial flow pump according to claim 2, characterized in that, An outer shell (6) is placed on the two receiving seats (104), one side surface of the two butting plates (105) abuts against both ends of the outer shell (6), and a weld seam (601) is arranged on the outer shell (6).

4. A housing plasma welding system based on the production of axial flow pumps according to claim 1, characterized in that, The offset assembly includes an offset seat (2) connected to the outer end of the balance shaft (101), an offset shaft (202) is connected to one side surface of the offset seat (2), a transmission bar (203) is connected to one end of the offset shaft (202), and an offset rod (201) is connected to each end of the offset seat (2).

5. A plasma welding system for a housing produced based on an axial flow pump according to claim 1, characterized in that, The welding assembly includes a fixed frame (4) rotatably connected to one end of the transmission bar (203), a counterweight seat (401) is fixedly connected to one end of the fixed frame (4), a counterweight block (402) is arranged in the counterweight seat (401), a fixed rod (403) is fixedly connected to the other end of the fixed frame (4), and a fixed strip (404) is fixedly connected to the upper surface of the fixed rod (403).

6. The housing plasma welding system produced based on an axial flow pump according to claim 5, characterized in that, The welding assembly further includes a connection seat (505) fixedly connected to one side surface of the fixed rod (403), a driving motor (506) is arranged on one side of the connection seat (505), a pulley (503) is arranged at each end of the connection seat (505), a transmission belt (504) is rotatably connected between the two pulleys (503), a driving gear (502) is connected to one end of each of the two pulleys (503), and the output end of the driving motor (506) penetrates through the connection seat (505) and is connected to one end of one of the pulleys (503).

7. A housing plasma welding system produced based on an axial flow pump according to claim 6, characterized in that, The welding assembly further includes a welding seat (5) fixedly connected to one end of the fixed strip (404), a transmission gear ring (501) is rotatably connected to one end of the welding seat (5), a connecting rod (507) is connected to the other end of the welding seat (5), and a plasma welding torch (508) is arranged at one end of the connecting rod (507).

8. A housing plasma welding system based on the production of axial flow pumps according to claim 4, characterized in that, One side surface of the base (1) is connected with a shock-absorbing shaft (3). Two oppositely arranged shock-absorbing arms (301) are rotatably connected to the surface of the shock-absorbing shaft (3). One shock-absorbing strip (302) is connected to the side surface of each of the two shock-absorbing arms (301). One end of the outer surfaces of the two shock-absorbing strips (302) is respectively abutted against two offset rods (201). One shock absorber (304) is arranged on the inner surface of the same end of each of the two shock-absorbing strips (302). A shock-absorbing spring (303) is connected between the two shock absorbers (304).

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