A centrifugal pump casing welding equipment

Abstract

The invention relates to the technical field of welding equipment manufacturing, and discloses a centrifugal pump casing welding equipment, comprising a base plate, a connecting plate 1 is fixedly connected to the top of the base plate, a moving device is fixedly connected to the top of the connecting plate 1, a welding gun is fixedly connected to the inner wall of the moving device, a motor 1 is fixedly connected to the outer wall of the connecting plate 1, and the motor 1 is arranged to drive the gear 1 to rotate, so as to provide power for the movement and rotation of the casing, the inner wall of the connecting plate 1 is rotatably connected to the gear 1 through a bearing, and the output end of the motor 1 is fixedly connected to the gear, and a moving component is arranged, when the staff welds the casing, the casing is placed on the placement component, and then the inner wall of the casing is supported by the moving component. While the casing is supported, the alignment of the inner wall of the casing and the welding position is also ensured, and the staff does not need to perform alignment operations, thereby optimizing the installation process.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment manufacturing, in particular to a centrifugal pump casing welding device. Background Art

[0002] A centrifugal pump is a pump that relies on the centrifugal force generated by the rotation of the impeller to transport liquid. When the pump impeller rotates, the liquid in the impeller is thrown to the edge of the impeller under the action of centrifugal force, and forms a liquid flow with a certain pressure and speed at the edge of the impeller. After these liquids enter the pump casing, the flow channel of the pump casing gradually expands, the flow rate of the liquid gradually decreases, the pressure gradually increases, and finally discharged from the pump outlet.

[0003] The patent application with application number CN202020760812.7 discloses a fixing device for welding a centrifugal pump casing, which relates to the technical field of welding equipment manufacturing, and comprises a base plate, a rubber bushing and a top plate; a first through hole is provided at the center position of the upper surface of the base plate, and two annular limiting grooves are provided on the side wall of the first through hole along the center line direction of the first through hole; a positioning column is provided vertically on the upper surface of the base plate; three threaded through holes are provided on the base plate, and three studs are provided on the base plate through the three threaded through holes for threaded connection, a nut is provided at the bottom of the stud, an arc-shaped fixing surface is provided on the side of the middle part of the stud facing the first through hole, and a baffle is provided horizontally on the upper part of the stud; two annular limiting protrusions are provided on the outer side surface of the rubber bushing; a second through hole is provided at the center position of the upper surface of the top plate, and three connecting through holes matching the studs are provided at corresponding positions on the top plate. The device can stably fix the centrifugal pump casing to be welded, weld it, and is very convenient to disassemble and install.

[0004] When the above equipment is in use, it can stably fix the centrifugal pump casing that needs to be welded, and it is very convenient to disassemble and install. However, when aligning the centrifugal pump casing, manual adjustments are required many times, resulting in reduced efficiency in disassembly and installation of the centrifugal pump casing. Summary of the invention

[0005] The object of the present invention is to provide a centrifugal pump casing welding device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a centrifugal pump casing welding device, comprising a bottom plate, a connecting plate 1 is fixedly connected to the top of the bottom plate, a moving device is fixedly connected to the top of the connecting plate 1, a welding gun is fixedly connected to the inner wall of the moving device, a motor 1 is fixedly connected to the outer wall of the connecting plate 1, and a gear 1 is driven to rotate by the motor 1 to provide power for the movement and rotation of the casing, the inner wall of the connecting plate 1 is rotatably connected to the gear 1 through a bearing, and the output end of the motor 1 is fixedly connected to the gear 1, and further comprising:

[0007] A rotating mechanism, the rotating mechanism includes a shell 1 rotatably connected to the inner wall of a connecting plate 1 through a bearing, the outer wall of the shell 1 is fixedly connected to a gear 2, the gear 2 is meshed with the gear 1, after the fixation of the shell is completed, after the welding position is adjusted by a moving device, the welding gun and the motor 1 are started to weld the shell, the outer wall of the shell 1 is fixedly connected to a motor 2, and the motor 2 is used to provide rotational power for the threaded column in the moving component to support the shell to be welded, the shell 1 is provided with a notch on the side away from the motor 2, the inner wall of the notch is fixedly connected to a track, the inner wall of the shell 1 is fixedly connected to a moving component, and the inner wall of the track is movably connected to a placement component.

[0008] According to the above technical solution, the moving component includes a threaded column, the inner wall of the outer shell is rotatably connected to the threaded column through a bearing, the outer wall of the threaded column is sleeved with a sliding block, the position of the sliding block is changed by rotating the threaded column, and then the position of the placement component is changed by the elastic telescopic rod, the inner wall of the sliding block is threadedly connected to the threaded column, and the inner wall of the sliding block is rotatably connected to the elastic telescopic rod through a bearing. The elastic telescopic rod is provided so that the connection between the sliding block and the placement component is no longer a rigid connection. When the placement component no longer moves, it will not hinder the movement of the sliding block, thereby ensuring the normal operation of the equipment.

[0009] According to the above technical solution, the inner wall of the shell one is fixedly connected to a sliding plate one, the side of the inner wall of the shell one away from the sliding plate one is fixedly connected to a sliding plate two, the outer wall of the sliding plate one is movably connected to a sliding plate three, the outer wall of the sliding plate three is fixedly connected to a sliding column one, the end of the sliding column one away from the sliding plate three is fixedly connected to a slider two, the inner wall of the slider two is movably connected to the sliding plate two, and the moving trajectory of the placed component is limited by the devices of the sliding plate one and the sliding plate two.

[0010] According to the above technical solution, the outer wall of the sliding column one is movably connected with a sliding block one, the outer wall of the sliding block one is fixedly connected with a connecting column one, the outer wall of the sliding column one is sleeved with a spring one, one end of the spring one is fixedly connected with a sliding plate three, the end of the spring one away from the sliding plate three is fixedly connected with the sliding block one, and the side of the sliding plate three close to the sliding block one is fixedly connected with a push rod. This arrangement allows the device to pull back the placement component when dealing with shells with different inner diameters, and clamp and fix the shell that needs to be welded, thereby increasing the universal capability of the device.

[0011] According to the above technical solution, the placement component includes an annular plate, the outer wall of the annular plate is fixedly connected to a slider three, the inner wall of the slider three is movably connected to the track, the top of the annular plate is fixedly connected to a baffle, the bottom of the annular plate is fixedly connected to a connector, the inner wall of the annular plate is fixedly connected to a slider four, and the end of the elastic telescopic rod away from the sliding block is rotatably connected to the connector through a bearing. By setting the annular plate, the main body of the placement component can move up and down under the control of the moving component, and can also move forward and backward.

[0012] According to the above technical solution, the inner wall of the annular plate is movably connected with connecting column 2, the end of connecting column 1 away from slider 1 is fixedly connected to connecting column 2, and a circular hole is opened at the end of connecting column 2 close to the push rod, and the inner wall of the circular hole is fixedly connected to the push rod.

[0013] The cam is connected to the second end of the support frame by a spring, and the spring has two ends which are connected to the second end of the support frame by a spring, and the two ends are connected to the cam, and the two ends are connected to the cam.

[0014] The top of described sliding panel also is provided with an end for sliding panel, and the end of sliding panel is connected with an end of sliding panel, and the end of sliding panel is connected with an end of sliding panel.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. The present invention sets a moving component. When the staff is welding the shell, the shell is placed on the placement component, and then the inner wall of the shell is supported by the moving component. While supporting the shell, the alignment of the inner wall of the shell and the welding position is ensured, and the staff does not need to perform alignment operations, thereby optimizing the installation process.

[0017] 2. The present invention sets a movable component so that when the device copes with shells with different inner diameters, the placement component can be pulled back to clamp and fix the shell that needs to be welded, thereby increasing the universal capability of the device.

[0018] 3. The present invention sets a placement component. After the staff fixes the inner diameter of the shell through the equipment, the blocking plate will be automatically extended. There is no need to manually install the clamping plate on the other side of the shell, which simplifies the process of installing and disassembling the shell and improves the efficiency of installation and disassembly.

[0019] 4. The present invention sets a placement component. After the device fixes the outer shell on the outer side of the force-bearing rod, the internal friction plate will apply pressure to the inner wall of the outer shell, thereby enhancing the friction force of the friction plate on the inner wall of the outer shell, ensuring that the outer shell will not roll when the device is welding the outer shell, thereby improving the fixing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 is a schematic diagram of the rotating mechanism of the present invention;

[0024] Figure 4 is a cross-sectional view of the rotating mechanism of the present invention;

[0025] Figure 5 is a schematic diagram of the internal parts of the mobile assembly of the present invention;

[0026] Figure 6 is a schematic diagram of the placement assembly of the present invention;

[0027] Figure 7 is a schematic diagram of a placement assembly annular plate of the present invention;

[0028] Figure 8 is a cross-sectional view of a placement assembly of the present invention;

[0029] Fig. 9 It is a schematic diagram of the internal parts of the placement assembly of the present invention;

[0030] In the figure: 1, bottom plate; 101, connecting plate 1; 102, moving device; 103, welding gun; 104, motor 1; 105, gear 1; 2, rotating mechanism; 201, housing 1; 202, motor 2; 203, gear 2; 204, notch; 205, track; 21, moving assembly; 211, threaded column; 212, sliding block; 213, elastic telescopic rod; 214, sliding plate 1; 215, sliding plate 2; 216, sliding plate 3; 217, sliding column 1; 218, slider 1; 219, spring 1; 2110, connecting column 1; 2111, slider 2; 2112, push rod; 22 , placement component; 221, annular plate; 222, slider three; 223, baffle; 224, connector; 225, slider four; 226, connecting column two; 227, round hole; 228, connecting plate two; 229, connecting plate three; 2210, slide groove; 2211, arc plate; 2212, elastic component one; 2213, friction plate; 2214, shell two; 2215, sliding column two; 2216, round plate; 2217, force rod; 2218, spring two; 2219, connecting plate four; 2220, connecting plate five; 2221, sliding plate four; 2222, pulling plate; 2223, blocking plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: See Figure 1-Figure 5 The present invention provides a technical solution: a centrifugal pump casing welding device, comprising a bottom plate 1, a connecting plate 101 is fixedly connected to the top of the bottom plate 1, a moving device 102 is fixedly connected to the top of the connecting plate 101, a welding gun 103 is fixedly connected to the inner wall of the moving device 102, a motor 104 is fixedly connected to the outer wall of the connecting plate 101, a gear 105 is rotatably connected to the inner wall of the connecting plate 101 through a bearing, and the output end of the motor 104 is fixedly connected to the gear 105, and also includes:

[0033] The rotating mechanism 2 includes a shell 201 rotatably connected to the inner wall of the connecting plate 101 through a bearing, a gear 203 is fixedly connected to the outer wall of the shell 201, the gear 203 is meshed with the gear 105, a motor 202 is fixedly connected to the outer wall of the shell 201, a notch 204 is provided on the side of the shell 201 away from the motor 202, a track 205 is fixedly connected to the inner wall of the notch 204, a moving component 21 is fixedly connected to the inner wall of the shell 201, and a placement component 22 is movably connected to the inner wall of the track 205.

[0034] The moving component 21 includes a threaded column 211, the inner wall of the outer shell 201 is rotatably connected to the threaded column 211 through a bearing, the outer wall of the threaded column 211 is sleeved with a sliding block 212, the inner wall of the sliding block 212 is threadedly connected to the threaded column 211, the inner wall of the sliding block 212 is rotatably connected to an elastic telescopic rod 213 through a bearing, the inner wall of the outer shell 201 is fixedly connected to a sliding plate 1 214, the side of the inner wall of the outer shell 201 away from the sliding plate 1 214 is fixedly connected to a sliding plate 215, the outer wall of the sliding plate 1 214 is movably connected to a sliding plate 3 216, the outer wall of the sliding plate 3 216 is fixedly connected to a sliding column 1 217, and the end of the sliding column 1 217 away from the sliding plate 3 216 is fixedly connected to a sliding block 2 2111. When the moving component 21 drives the placement component 22 to move outward, the placement component 22 The sliding column 1 217 is driven to move together through the connecting column 1 2110 and the sliding block 2111. As the sliding column 1 217 moves, the sliding plate 3 216 is driven to move along the trajectory of the sliding plate 215. The moving sliding plate 3 216 drives the push rod 2112 to move together with the placement component 22. The inner wall of the sliding block 2111 is movably connected to the sliding plate 215. The outer wall of the sliding column 1 217 is movably connected to the sliding block 1 218. The outer wall of the sliding block 1 218 is fixedly connected to the connecting column 1 2110. The outer wall of the sliding column 1 217 is sleeved with a spring 1 219. One end of the spring 1 219 is fixedly connected to the sliding plate 3 216. The end of the spring 1 219 away from the sliding plate 3 216 is fixedly connected to the sliding block 1 218. The side of the sliding plate 3 216 close to the sliding block 1 218 is fixedly connected to the push rod 2112.

[0035] The working principle of this embodiment is as follows: when the shell needs to be fixed, the shell is first placed on one of the placement components 22, and then the motor 202 is started to drive the threaded column 211 to rotate, and the rotating threaded column 211 will drive the sliding block 212 to move, and the moving sliding block 212 will drive the placement component 22 to move outward along the trajectory of the track 205 through the elastic telescopic rod 213, and then support and fix the inner wall of the shell, and as the push rod 2112 is started, the placement component 22 is pulled back, so that the front and back of the shell are fixed. After the fixation is completed, the position of the welding gun 103 is controlled by the moving device 102, and the motor 1 104 is started to drive the gear 1 105 to rotate, and the rotating gear 105 will drive the shell 1 201 to rotate through the gear 203, and then drive the shell on the placement component 22 to rotate together, and then the welding gun 103 is started to weld the shell.

[0036] Example 2: Based on Example 1, please refer to Figure 6-Figure 9The placement component 22 includes an annular plate 221, the outer wall of the annular plate 221 is fixedly connected with a slider 3 222, the inner wall of the slider 3 222 is movably connected to the track 205, the top of the annular plate 221 is fixedly connected with a baffle 223, the bottom of the annular plate 221 is fixedly connected with a connector 224, the inner wall of the annular plate 221 is fixedly connected with a slider 4 225, the end of the elastic telescopic rod 213 away from the sliding block 212 is rotatably connected to the connector 224 through a bearing, the inner wall of the annular plate 221 is movably connected with a connecting column 226, the end of the connecting column 1 2110 away from the slider 1 218 is fixedly connected to the connecting column 226, and a circular hole 227 is opened at one end of the connecting column 226 close to the push rod 2112, and the inner wall of the circular hole 227 The connecting plate 228 is fixedly connected to the push rod 2112, and the upper and lower ends of the connecting column 226 away from the circular hole 227 are fixedly connected to the connecting plate 228. The inner wall of the connecting plate 228 is fixedly connected to the outer shell 2214. The left and right ends of the connecting column 226 away from the circular hole 227 are fixedly connected to the connecting plate 3 229. The outer walls of the two connecting plates 3 229 are provided with a sliding groove 2210. The inner wall of the sliding groove 2210 is movably connected to the slider 3 222. The outer wall of the connecting plate 3 229 is fixedly connected to the arc plate 2211. The end of the arc plate 2211 away from the connecting plate 3 229 is fixedly connected to the connecting plate 228. The inner wall of the upper connecting plate 228 is movably connected to the friction plate 2213. The bottom of the friction plate 2213 is fixedly connected to the There is an elastic component 2212. After the force-bearing rod 2217 is subjected to the external force applied by the shell, it will shrink inward, thereby allowing the friction plate 2213 to contact the inside of the shell. The friction plate 2213 in contact with the shell will move inward under the pressure of the inner wall of the shell, thereby compressing the elastic component 2212. As the elastic component 2212 is compressed, its elastic force is enhanced, thereby increasing the pressure of the friction plate 2213 on the inside of the shell, thereby enhancing the friction between the friction plate 2213 and the inner wall of the shell. The top of the lower connecting plate 228 is fixedly connected to the elastic component 2212, and the inner wall of the shell 2214 is movably connected to a sliding column 2215. The top of the sliding column 2215 is fixedly connected to the force-bearing rod 2217. 5 is fixedly connected with a circular plate 2216, and an outer wall of the sliding column 2215 is sleeved with a spring 2218, one end of the spring 2218 is fixedly connected to the circular plate 2216, and the end of the spring 2218 away from the circular plate 2216 is fixedly connected to the shell 2214. After the device completes the welding of the shell, the fixing of the shell is released by the moving component 21. At this time, the force-bearing rod 2217 is no longer subjected to the pressure of the shell, which allows the force-bearing rod 2217 to drive the circular plate 2216 to move outward under the action of the spring 2218. The moving circular plate 2216 will drive the force-bearing rod 2217 to move outward through the sliding column 2215, and at the same time, the moving sliding column 2215 drives the bottom connecting plate 4 2219 to move outward.The movable connecting plate 4 2219 allows the blocking plate 2223 to move inward through the connecting plate 5 2220, the sliding plate 4 2221 and the pulling plate 2222, so that the staff can take out the shell conveniently. The bottom of the sliding column 2215 is fixedly connected with the connecting plate 4 2219. The inner wall of the connecting plate 4 2219 is rotatably connected with the connecting plate 5 2220 through a bearing. The end of the connecting plate 5 2220 away from the connecting plate 4 2219 is rotatably connected with the sliding plate 4 2221 through a bearing. The bottom of the sliding plate 4 2221 is movably connected with the connecting plate 2 28. The inner wall of the sliding plate 4 2221 is rotatably connected with the pulling plate 2222 through a bearing. The end of the pulling plate 2222 away from the sliding plate 4 2221 is rotatably connected with the blocking plate 2223 through a bearing. The outer wall of the blocking plate 2223 is movably connected with the connecting plate 2 28.

[0037] The working principle of this embodiment is as follows: after the shell is placed on the placement component 22, the annular plate 221 is driven to move outward along the track 205 by the moving device 102 and the connecting head 224, and then the placement component 22 body in the annular plate 221 is driven to move together. As the placement component 22 moves, the inner wall of the shell applies pressure to the force rod 2217, causing the force rod 2217 to move inward. As the force rod 2217 moves, the connecting plate 4 2219 is driven downward by the sliding rod 2 The movable connecting plate four 2219 drives the sliding plate four 2221 to move toward the direction of the shell 201 through the connecting plate five 2220. The movement of the sliding plate four 2221 drives the blocking plate 2223 to move upward through the pulling plate 2222, so as to fix the side of the shell away from the shell 201. Then, the push rod 2112 is started to pull the main body of the placement component 22 to move along the track of the slide groove 2210, and pressure is applied to the shell through the blocking plate 2223 and the baffle 223, thereby starting the clamping and fixing effect.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A centrifugal pump casing welding device, comprising a base plate (1), a connecting plate 1 (101) being fixedly connected to the top of the base plate (1), a moving device (102) being fixedly connected to the top of the connecting plate 1 (101), a welding gun (103) being fixedly connected to the inner wall of the moving device (102), a motor 1 (104) being fixedly connected to the outer wall of the connecting plate 1 (101), a gear 1 (105) being rotatably connected to the inner wall of the connecting plate 1 (101) via a bearing, an output end of the motor 1 (104) being fixedly connected to the gear 1 (105), and characterized in that: Also includes: A rotating mechanism (2), the rotating mechanism (2) comprising a housing (201) rotatably connected to the inner wall of a connecting plate (101) via a bearing, a gear (203) being fixedly connected to the outer wall of the housing (201), the gear (203) being meshed with the gear (105), a motor (202) being fixedly connected to the outer wall of the housing (201), a notch (204) being provided on a side of the housing (201) away from the motor (202), a track (205) being fixedly connected to the inner wall of the notch (204), a moving component (21) being fixedly connected to the inner wall of the housing (201), and a placement component (22) being movably connected to the inner wall of the track (205); The moving component (21) comprises a threaded column (211), the inner wall of the housing 1 (201) is rotatably connected to the threaded column (211) via a bearing, the outer wall of the threaded column (211) is sleeved with a sliding block (212), the inner wall of the sliding block (212) is threadedly connected to the threaded column (211), and the inner wall of the sliding block (212) is rotatably connected to an elastic telescopic rod (213) via a bearing; The inner wall of the shell 1 (201) is fixedly connected to a sliding plate 1 (214); a side of the inner wall of the shell 1 (201) away from the sliding plate 1 (214) is fixedly connected to a sliding plate 2 (215); an outer wall of the sliding plate 1 (214) is movably connected to a sliding plate 3 (216); a sliding column 1 (217) is fixedly connected to the outer wall of the sliding plate 3 (216); an end of the sliding column 1 (217) away from the sliding plate 3 (216) is fixedly connected to a sliding block 2 (2111); and an inner wall of the sliding block 2 (2111) is movably connected to the sliding plate 2 (215); The outer wall of the sliding column 1 (217) is movably connected to a sliding block 1 (218), and the outer wall of the sliding block 1 (218) is fixedly connected to a connecting column 1 (2110). The outer wall of the sliding column 1 (217) is sleeved with a spring 1 (219), and one end of the spring 1 (219) is fixedly connected to the sliding plate 3 (216). The end of the spring 1 (219) away from the sliding plate 3 (216) is fixedly connected to the sliding block 1 (218), and the side of the sliding plate 3 (216) close to the sliding block 1 (218) is fixedly connected to a push rod (2112).

2. A centrifugal pump casing welding device according to claim 1, characterized in that: The placement component (22) comprises an annular plate (221), the outer wall of the annular plate (221) is fixedly connected to a slider block three (222), the inner wall of the slider block three (222) is movably connected to the track (205), the top of the annular plate (221) is fixedly connected to a baffle plate (223), the bottom of the annular plate (221) is fixedly connected to a connector (224), the inner wall of the annular plate (221) is fixedly connected to a slider block four (225), and one end of the elastic telescopic rod (213) away from the sliding block (212) is rotatably connected to the connector (224) via a bearing.

3. A centrifugal pump casing welding device according to claim 2, characterized in that: The inner wall of the annular plate (221) is movably connected to a second connecting column (226); an end of the first connecting column (2110) away from the first sliding block (218) is fixedly connected to the second connecting column (226); an end of the second connecting column (226) close to the push rod (2112) is provided with a circular hole (227); the inner wall of the circular hole (227) is fixedly connected to the push rod (2112).

4. A centrifugal pump casing welding device according to claim 3, characterized in that: The upper and lower ends of the connecting column 2 (226) away from the circular hole (227) are fixedly connected to the connecting plate 2 (228), the inner wall of the connecting plate 2 (228) is fixedly connected to the outer shell 2 (2214), the left and right ends of the connecting column 2 (226) away from the circular hole (227) are fixedly connected to the connecting plate 3 (229), the outer walls of the two connecting plates 3 (229) are provided with a sliding groove (2210), and the inner wall of the sliding groove (2210) is movably connected to the sliding block 3 (222). The outer wall of the connecting plate three (229) is fixedly connected with an arc plate (2211), and one end of the arc plate (2211) away from the connecting plate three (229) is fixedly connected with the connecting plate two (228), and the inner wall of the upper connecting plate two (228) is movably connected with a friction plate (2213), and the bottom of the friction plate (2213) is fixedly connected with an elastic component one (2212), and the top of the lower connecting plate two (228) is fixedly connected with the elastic component one (2212).

5. The centrifugal pump casing welding equipment according to claim 4, characterized in that: The inner wall of the second shell (2214) is movably connected with a second sliding column (2215), the top of the second sliding column (2215) is fixedly connected with a force-bearing rod (2217), the outer wall of the second sliding column (2215) is fixedly connected with a circular plate (2216), the outer wall of the second sliding column (2215) is sleeved with a second spring (2218), one end of the second spring (2218) is fixedly connected to the circular plate (2216), the end of the second spring (2218) away from the circular plate (2216) is fixedly connected to the second shell (2214), the bottom of the second sliding column (2215) is fixedly connected with a fourth connecting plate (2219), the The inner wall of the connecting plate four (2219) is rotatably connected to the connecting plate five (2220) via a bearing, and the end of the connecting plate five (2220) away from the connecting plate four (2219) is rotatably connected to the sliding plate four (2221) via a bearing, and the bottom of the sliding plate four (2221) is movably connected to the connecting plate two (228), and the inner wall of the sliding plate four (2221) is rotatably connected to the pulling plate (2222) via a bearing, and the end of the pulling plate (2222) away from the sliding plate four (2221) is rotatably connected to the blocking plate (2223) via a bearing, and the outer wall of the blocking plate (2223) is movably connected to the connecting plate two (228).

Images