A welding structure of a guide vane of a stamping multistage pump

Abstract

The present application relates to a kind of stamping multistage pump guide vane welding structure, in the case where the original guide vane welding structure advantage is retained, without changing the size, welding tooling, guide vane structure size, increase guide vane end positioning tooling, increase guide vane convex point.Guide vane end positioning, ensure that it will not be deformed when welding, and make guide vane convex point through guide shell opening, through high temperature melting convex point, so that guide vane is completely combined into an integral whole with guide shell, thereby ensuring that the overall strength of guide is more than 2 times higher than before improvement, eliminates the guide vane tearing phenomenon in the use process of stamping pump guide vane, so that previous technical defects are improved.

Description

Technical Field

[0001] This invention relates to a fluid guide welding structure, specifically to a fluid guide welding structure for a stamping multistage pump with superior performance stability, higher product reliability, and lower failure risk. Background Technology

[0002] Currently, multistage pumps are widely used in water supply, water treatment, system pressurization, HVAC, and pharmaceutical systems. However, existing products have poor structural rigidity, low hydraulic performance, high requirements for component manufacturing, and many design challenges. The reliability issues that have plagued the industry for many years have not been well resolved, seriously affecting users' pump experience and even the normal and safe operation of the entire application system.

[0003] Currently, the guide vanes of multistage stamping pumps are all welded using a spot welding machine, but the welding strength is not very high, the guide vanes are easy to tear, and the failure rate for customers is high. Figure 1 This is a common welded structure. Figure 2 for Figure 1 A magnified view of a portion of the image. Figure 3 for Figure 1 A schematic diagram of the fluid guiding component in the diagram. Figure 4 for Figure 1 A schematic diagram of the unfolded guide vane is shown in the figure above: Figure 1 This is a typical welding structure with good welding of the guide fluid in a multi-stage stamping pump. It mainly includes: upper electrode (1), screw (2), spring washer (3), jacket (4), guide fluid positioning sleeve (5), screw (6), outer hoop (7), spring washer (8), screw (9), lower electrode (10), lower electrode seat (11), positioning shaft (12), pad (13), guide plate positioning (14), screw (15), guide fluid (16) fixing pin (17), upper electrode (18), screw (19), and spring washer (20). The upper electrode (18) and lower electrode (10) conduct electricity, which is transmitted to the guide fluid, melting the small protrusions on the guide plate and welding them together with the guide shell.

[0004] from Figure 1 It can be seen that, firstly, the tip of the guide vane is movable, so under high pressure, the guide vane will move, affecting the hydraulic performance of the guide fluid. Secondly, since a high-speed rotating impeller is installed inside the guide fluid, if the impeller rubs inside the guide fluid, it will cause severe deformation and detachment of the guide vane and the guide shell, affecting the life of the pump, and even causing a serious decrease in pump efficiency or pump failure, with a significant potential risk of failure. Summary of the Invention

[0005] To address the aforementioned problems, the main objective of this invention is to provide a welded structure for the fluid guide of a multi-stage stamping pump that offers superior performance stability, higher product reliability, and lower failure risk.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution: a stamping multistage pump fluid guide welding structure, the stamping multistage pump fluid guide welding structure comprising: an upper electrode seat, a lower electrode seat, an upper electrode, a lower electrode, an outer hoop, a fluid guide positioning sleeve, a fluid guide, a fluid guide plate, a fluid guide shell, a fluid guide plate positioning block, a pad block, and a fluid guide plate end positioning sleeve.

[0007] The upper electrode and the lower electrode are fixed on the upper electrode seat and the lower electrode seat respectively. The fluid guide is located between the upper electrode and the lower electrode. The fluid guide, the guide plate, and the guide shell are welded together to form a fluid guide assembly.

[0008] The end positioning sleeve of the guide vane is fixedly connected to the guide vane; the outer hoop is fixed on the lower electrode, and the guide vane positioning sleeve and the outer hoop are fixed together.

[0009] The lower end of the guide vane positioning block mates with the pad block, and the upper end of the guide vane positioning block is engraved with a groove for fixing the guide vane. The middle of the guide vane positioning block is fixed to the guide fluid by a sleeve and a positioning shaft.

[0010] The pad is engaged with the lower electrode at its lower end and with the guide vane positioning block at its upper end, and the two are fixed together.

[0011] The end positioning sleeve of the guide vane is machined with a groove of the same shape as the guide vane to fix the end of the guide vane. The other end of the end positioning sleeve of the guide vane is engaged with the guide shell.

[0012] A circular hole is punched in the guide shell to match the guide plate. Similarly, a guide plate protrusion is punched in the guide plate. When welding the guide plate, the protrusion on the guide plate passes through the circular hole in the guide shell and passes through the circular hole in the guide shell. The protrusion is melted by the high temperature of welding.

[0013] In a specific embodiment of the present invention, the upper electrode and the lower electrode are fixed to the upper electrode holder and the lower electrode holder by the fifth screw and the first screw, respectively.

[0014] In a specific embodiment of the present invention, the guide plate and the guide fluid are fixedly connected together by welding.

[0015] In a specific embodiment of the present invention, the end positioning sleeve of the guide vane and the guide vane are fixedly connected together by bolts.

[0016] In a specific embodiment of the present invention, the jacket, the positioning shaft, and the fixing pin are fixed together by bolts.

[0017] In a specific embodiment of the present invention, the outer hoop is fixed to the lower electrode by the fourth screw, and the fluid guiding positioning sleeve is fixed together with the outer hoop by the second screw.

[0018] In a specific embodiment of the present invention, the positioning shaft is fitted with a fluid guide and fixed to the lower electrode by a screw with a fixing pin.

[0019] The positive and progressive effects of the present invention are as follows: Compared with common technologies, the welding structure of the multistage pump guide vane provided by the present invention has the following advantages: 1. The guide vane is provided with a positioning fixture at the end, so that the guide vane is positioned at both the front and rear, and the guide vane will not deform after welding.

[0020] 2. Punch out round holes on the guide shell to match the guide plate, and punch out protrusions on the guide plate as well. When welding the guide plate, the protrusions on the guide plate pass through the small holes in the guide shell and pass through the openings in the guide shell. The protrusions are melted by the high temperature of welding, so that the guide plate is completely integrated with the guide shell. This ensures that the overall strength of the guide plate is more than twice that of the previous version, and eliminates the phenomenon of the guide plate tearing during the use of the press pump guide plate. Attached Figure Description

[0021] Figure 1 This is a common welded structure.

[0022] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0023] Figure 3 for Figure 1 A schematic diagram of the fluid guiding component in the diagram.

[0024] Figure 4 for Figure 1 A schematic diagram of the unfolded guide vane.

[0025] Figure 5 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 6 for Figure 5 A magnified view of a portion of the image.

[0027] Figure 7 for Figure 5 A schematic diagram of the fluid guiding component in the diagram.

[0028] Figure 8 for Figure 5 A schematic diagram of the unfolded guide vane.

[0029] Figure 9 for Figure 5 A schematic diagram of the structure of the positioning sleeve at the end of the guide vane.

[0030] Figure 10 for Figure 9 AA section view in the image.

[0031] The following are the names corresponding to the reference numerals in this invention:

[0032] Upper electrode seat 1, first screw 2, first spring washer 3, clip 4, guide fluid positioning sleeve 5, second screw 6, outer clamp 7, second spring washer 8, third screw 9, lower electrode 10, lower electrode seat 11, positioning shaft 12, pad 13, guide plate positioning block 14, fourth screw 15, guide fluid 16, fixing pin 17, upper electrode 18, fifth screw 19, third spring washer 20, guide plate end positioning sleeve 21, guide plate protrusion 22, guide plate 23, guide shell 24. Detailed Implementation

[0033] The preferred embodiments of the present invention are given below with reference to the accompanying drawings to illustrate the technical solution of the present invention in detail.

[0034] Figure 5 This is a schematic diagram of the overall structure of the present invention. Figure 6 for Figure 5 A magnified view of a portion of the image. Figure 7 for Figure 5 A schematic diagram of the fluid guiding component in the diagram. Figure 8 for Figure 5 A schematic diagram of the unfolded guide vane, as shown below. Figure 5-8 As shown: The welding structure for the flow guide of the multi-stage stamping pump proposed in this invention includes: upper electrode seat 1, lower electrode seat 11, upper electrode 18, lower electrode 10, flow guide 16, outer hoop 7, and flow guide positioning sleeve 5.

[0035] The upper electrode 18 and the lower electrode 10 are fixed on the upper electrode seat 1 and the lower electrode seat 11, respectively. The guide fluid 16 is located between the upper electrode 18 and the lower electrode 10. The guide fluid 16, the guide plate 23, and the guide shell 24 are welded together to form a guide fluid assembly. The end positioning sleeve 21 of the guide plate and the guide plate 23 are fixedly connected together. The outer hoop 7 is fixed on the lower electrode 10. The guide fluid positioning sleeve 5 and the outer hoop 7 are fixed together. The clamp 4, the positioning shaft 12, and the fixing pin 17 are fixed together by bolts.

[0036] The lower end of the guide vane positioning block 14 engages with the pad block 13, and the upper end of the guide vane positioning block 14 is engraved with a groove for fixing the guide vane. The guide vane positioning block 14 is fixed to the guide vane 16 through the clamp 4 and the positioning shaft 12.

[0037] The pad 13 engages with the lower electrode at its lower end and with the guide vane positioning block 14 at its upper end, and is fixed together with screws.

[0038] The positioning shaft 12 is fixed to the lower electrode by engaging with the fluid guide and by screws with a fixing pin.

[0039] The end positioning sleeve 21 of the guide vane is machined with a groove that is the same shape as the guide vane 23 to fix the end of the guide vane 23, and the other end is engaged with the guide shell 24.

[0040] A circular hole is punched in the guide shell 24 to mate with the guide plate 23 (see...). Figure 7 and 8 Similarly, guide plate protrusions 22 are punched out on guide plate 23. When guide fluid 16 is welded, the protrusions 22 on guide plate 23 pass through the circular hole of guide shell and the protrusions 22 pass through the circular hole of guide shell. The protrusions are melted by the high temperature of welding.

[0041] In a specific implementation of this invention, the upper electrode 18 and the lower electrode 10 are fixed to the upper electrode seat 1 and the lower electrode seat 11 respectively by the fifth screw 19 and the first screw 2; the guide plate and the guide fluid are fixedly connected together by welding; the guide plate end positioning sleeve 21 and the guide plate 23 are fixedly connected together by bolts; the clamp 4, the positioning shaft 12, and the fixing pin 17 are fixed together by bolts; the outer hoop 7 is fixed to the lower electrode 10 by the fourth screw 15, and the guide fluid positioning sleeve 5 is fixed to the outer hoop 7 by the second screw 6. The positioning shaft 12 is fixed to the lower electrode by screws through cooperation with the guide fluid and by the fixing pin. The above specific fixing or connection methods can also be replaced by other fixing or connection methods.

[0042] Figure 7 for Figure 5 A schematic diagram of the fluid guiding component in the diagram. Figure 8 for Figure 5 A schematic diagram of the unfolded guide vane. (See attached image.) Figure 7 and 8 As shown, this invention retains the advantages of the original fluid guide welding structure and, without changing the external dimensions, welding fixtures, or fluid guide structure dimensions, adds a positioning sleeve 21 at the end of the fluid guide plate and a protrusion 22 to the fluid guide plate. This positions the end of the fluid guide plate, ensuring it won't deform during welding. The protrusion 22 passes through the opening in the fluid guide shell 24, and the high temperature melts the protrusion, allowing the fluid guide plate 23 to completely integrate with the fluid guide shell 24. This ensures the overall strength of the fluid guide is more than twice that of the previous version, eliminating the tearing phenomenon of the fluid guide plate during use in the pressurized pump and improving upon previous technical defects.

[0043] Figure 9 for Figure 5 A schematic diagram of the structure of the positioning sleeve at the end of the guide vane. Figure 10 for Figure 9 AA section view, such as Figure 9 and 10 As shown: The positioning sleeve 21 at the end of the guide vane is an integrally formed positioning sleeve, which positions the end of the guide vane and ensures that it will not deform during welding.

[0044] The novel guide vane welding structure proposed in this invention has two key features. First, a positioning fixture is installed at the end of the guide vane, ensuring positioning both before and after welding, preventing deformation of the guide vane after welding. Second, a circular hole is punched in the guide shell to mate with the guide vane, and protrusions are punched on the guide vane as well. During welding, the protrusions on the guide vane pass through the small hole in the guide shell and through the opening in the guide shell. The high temperature of welding melts the protrusions, completely integrating the guide vane with the guide shell, thus ensuring that the overall strength of the guide vane is more than twice that of the previous method, and eliminating the tearing phenomenon of the guide vane during the use of the pressurized pump.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as defined by the appended claims and their equivalents.

Claims

1. A welded structure for the fluid guide of a stamped multi-stage pump, characterized in that: The welding structure for the flow guide of the multi-stage stamping pump includes: an upper electrode seat, a lower electrode seat, an upper electrode, a lower electrode, an outer hoop, a flow guide positioning sleeve, a flow guide, a flow guide plate, a flow guide shell, a flow guide plate positioning block, a pad block, and a flow guide plate end positioning sleeve. The upper and lower electrodes are fixed on the upper electrode holder and the lower electrode holder, respectively. The fluid guide is located between the upper and lower electrodes. The fluid guide, the guide plate, and the guide shell are welded together to form a fluid guide assembly. The end positioning sleeve of the guide vane is fixedly connected to the guide vane; the outer hoop is fixed on the lower electrode, and the guide vane positioning sleeve and the outer hoop are fixed together. The lower end of the guide vane positioning block mates with the pad block, and the upper end of the guide vane positioning block is engraved with a groove for fixing the guide vane. The middle of the guide vane positioning block is fixed to the guide fluid by a sleeve and a positioning shaft. The pad is engaged with the lower electrode at its lower end and with the guide vane positioning block at its upper end, and the two are fixed together. The end positioning sleeve of the guide vane is machined with a groove of the same shape as the guide vane to fix the end of the guide vane. The other end of the end positioning sleeve of the guide vane is engaged with the guide shell. A circular hole is punched in the guide shell to match the guide plate. Similarly, a guide plate protrusion is punched in the guide plate. When welding the guide plate, the protrusion on the guide plate passes through the circular hole in the guide shell and passes through the circular hole in the guide shell. The protrusion is melted by the high temperature of welding.

2. The stamping multi-stage pump guide welding structure according to claim 1, characterized in that: The upper electrode and the lower electrode are fixed to the upper electrode holder and the lower electrode holder respectively by the fifth screw and the first screw.

3. The stamping multi-stage pump fluid guide welded structure according to claim 1, characterized in that: The guide vane and the guide fluid are fixedly connected together by welding.

4. The stamping multi-stage pump fluid guide welded structure according to claim 1, characterized in that: The positioning sleeve at the end of the guide vane and the guide vane are fixed together by bolts.

5. The stamping multi-stage pump fluid guide welded structure according to claim 1, characterized in that: The sleeve, positioning shaft, and fixing pin are fixed together with bolts.

6. The stamping multi-stage pump fluid guide welded structure according to claim 1, characterized in that: The outer clamp is fixed to the lower electrode by the fourth screw, and the fluid guiding positioning sleeve is fixed together with the outer clamp by the second screw.

7. The stamping multi-stage pump fluid guide welded structure according to claim 1, characterized in that: The positioning shaft is fitted with a fluid guide and fixed to the lower electrode by a screw and a retaining pin.

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