Adjusting mechanism for axial position of pump shaft

Abstract

The invention is suitable for the technical field of centrifugal pumps, and provides a pump shaft axial position adjusting mechanism which comprises a supporting plate, a coupler is arranged in a centrifugal pump assembly, the axial distance of a main shaft is adjusted according to the distance, a protective cover needs to be opened during adjustment, the coupler and the distance of the main shaft need to be adjusted, and after adjustment is completed, the coupler needs to be fastened, and the protective cover needs to be installed; the whole device is reasonable in structural design, the pump in the working process can be protected and prevented from being damaged, the purpose of adjusting the position of the main shaft can be achieved by adjusting the coupler and enabling the connected main shaft to stretch out and draw back, only the coupler needs to be fastened after adjustment, use is very convenient, and the movable positioning assembly is arranged, so that the working efficiency is improved. And by arranging the pressing pieces, the gaskets can be replaced conveniently, fine gaps are adjusted, and the impeller does not need to be replaced.

Description

Technical Field

[0001] The present invention belongs to the technical field of centrifugal pumps, and particularly relates to an axial position adjusting mechanism for a pump shaft. Background Art

[0002] A centrifugal pump is a mechanical device that uses centrifugal force to transport liquids and is widely used in industries such as industry, agriculture, construction, water supply, and drainage. Its working principle is to generate centrifugal force through the rotation of the impeller, suck the liquid from the inlet of the pump, accelerate it, and then discharge it from the outlet. In rotating mechanical devices such as centrifugal pumps, the axial position of the pump shaft directly affects the performance and operating stability of the pump. Due to factors such as manufacturing errors, installation deviations, or thermal expansion during operation, the length and position of the pump shaft may change, resulting in the deviation of the gap between the impeller and the pump casing from the design value.

[0003] The prior art also has the following deficiencies:

[0004] Existing centrifugal pumps have usability defects. The axial position of the main shaft is not easy to change, and it is difficult to ensure the length dimension, and the length position of the main shaft cannot be adjusted according to the usage requirements. Summary of the Invention

[0005] The present invention provides an axial position adjusting mechanism for a pump shaft, aiming to solve the problems of existing centrifugal pumps, such as usability defects, difficult to change the axial position of the main shaft, difficult to ensure the length dimension, and unable to adjust the length position of the main shaft according to the usage requirements.

[0006] The present invention is realized as follows. An axial position adjusting mechanism for a pump shaft includes: a support plate, a moving and positioning assembly is arranged at the bottom of the support plate, first shock-absorbing assemblies are respectively arranged around the top of the support plate, and a fixing plate is arranged at the upper ends of the four first shock-absorbing assemblies; a centrifugal pump assembly is arranged in the middle of the upper end of the fixing plate. The centrifugal pump assembly includes a driving motor detachably and fixedly connected to one side of the upper end of the fixing plate, and the output end of the driving motor is fixedly connected to a main shaft; a coupling is installed in the middle of the main shaft, and the axis of the coupling is on the surface of the main shaft.

[0007] Preferably, the centrifugal pump assembly further includes protective covers arranged at the upper and lower ends of the coupling; connecting blocks are respectively fixedly connected to the mutually close sides of the upper and lower ends of the two protective covers, and every two of the four connecting blocks on the mutually close sides are detachably and fixedly connected; arc-shaped grooves are respectively opened at both ends of the sides of the two protective covers close to the main shaft, and the four arc-shaped grooves are respectively in contact with the upper and lower ends of both sides of the main shaft. Sealing strips are respectively fixedly connected to the walls of the four arc-shaped grooves, and the coupling is located inside the two protective covers.

[0008] Preferably, elastic shock-absorbing fixing platforms are fixedly connected to the upper ends of the fixing plates, respectively, near the tops of the two protective covers.

[0009] Preferably, the centrifugal pump assembly further includes a pump casing provided at an extended end of the main shaft. A water inlet pipe is communicated with one side of the pump casing, and a water outlet pipe is communicated with the top of the pump casing. A pump cover plate is detachably and fixedly connected to one side of the pump casing close to the main shaft. A sealing ring is provided between the pump cover plate and the pump casing. A through hole is formed in the pump cover plate, and the extended end of the main shaft passes through the through hole. A bearing is sleeved on the main shaft and at the through hole, and a gasket is installed at the through hole of the main shaft.

[0010] Preferably, the centrifugal pump assembly further includes that the extended end of the main shaft is detachably and fixedly connected to a connecting shaft through a flange, and the other side of the connecting shaft is detachably and fixedly connected to an impeller.

[0011] Preferably, the centrifugal pump assembly further includes a pressing piece sleeved on one side of the main shaft close to the pump cover plate. Limiting columns are fixedly connected to the four circumferences on one side of the pump cover plate close to the pressing piece. Limiting holes are formed in the four circumferences of the pressing piece, and the four limiting columns respectively pass through the four limiting holes.

[0012] Preferably, through holes are respectively formed in the four limiting columns, central plates are respectively fixedly connected to the middles of the four through holes, springs are respectively fixedly connected to both sides of the four central plates, and limiting blocks are respectively fixedly connected to the other sides of the eight springs.

[0013] Preferably, side plates are fixedly connected to both sides of the fixing plate. A plurality of second shock-absorbing components are installed on one side of the two side plates close to each other. A buffer plate is arranged on one side of the plurality of second shock-absorbing components close to the centrifugal pump assembly. The two buffer plates are respectively in contact with both sides of the centrifugal pump assembly.

[0014] Preferably, the first shock-absorbing component includes shock-absorbing frames fixedly connected to the four circumferences of the upper end of the support plate. Buffer blocks are slidably sleeved on the upper ends of the four shock-absorbing frames. The four buffer blocks are all fixedly connected to the bottom of the fixing plate. Dampers are respectively installed between the four buffer blocks and the interiors of the four shock-absorbing frames. Buffer springs are sleeved on the four dampers. The plurality of second shock-absorbing components are respectively identical in structure to the four first shock-absorbing components.

[0015] Preferably, the mobile positioning component includes U-shaped frames fixedly connected to the four sides of the bottom of the support plate respectively. A same mobile wheel is rotatably connected between the two sides of the four U-shaped frames. The middle of the two sides of the support plate is fixedly connected with stabilizing plates respectively. Screws are arranged at the upper ends between the two stabilizing plates respectively. The two screws are threadedly connected to the two stabilizing plates respectively. The extended ends of the two screws respectively pass through the two stabilizing plates and are rotatably connected with fixing blocks. The bottoms of the two fixing blocks are detachably and fixedly connected with anti-slip seats. The upper ends of the two sides of the two fixing blocks are fixedly connected with guide rods respectively. The extended ends of the four guide rods respectively pass through the two stabilizing plates.

[0016] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0017] By setting a coupling in the centrifugal pump component, the axial distance of the main shaft is adjusted according to the distance. When adjusting, the protective cover needs to be opened, the coupling is adjusted, and the distance of the main shaft is adjusted. After the adjustment is completed, the coupling needs to be tightened, and the protective cover is installed, and then it can be used. The overall structure of the device is reasonably designed. It can not only protect the pump during the working process and avoid damage, but also extend the telescopic length of the connected main shaft by adjusting the coupling, so as to achieve the purpose of adjusting the position of the main shaft. After adjustment, only the coupling needs to be tightened, and it is very convenient to use. By setting the mobile positioning component, it is convenient to move and fix. By setting the pressing piece, it is convenient to replace the gasket to adjust the fine gap without replacing the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a front view structural schematic diagram of the present invention;

[0020] Figure 3 is a top view structural schematic diagram of the present invention;

[0021] Figure 4 is a side view structural schematic diagram of the present invention;

[0022] Figure 5 is a side view structural schematic diagram of the present invention;

[0023] Figure 6 is a front view sectional structural schematic diagram of the present invention;

[0024] Figure 7 is the present invention Figure 1 magnified schematic diagram at A;

[0025] Figure 8 is the present invention Figure 6 magnified schematic diagram at B;

[0026] Figure 9 is a schematic enlarged view of the structure at position C in the present invention Figure 6 ;

[0027] Figure 10 is a schematic enlarged view of the structure at position D in the present invention Figure 8 ;

[0028] In the figure: 1, support plate; 2, moving positioning assembly; 3, first shock absorption assembly; 4, fixing plate; 5, side plate; 6, second shock absorption assembly; 7, buffer plate; 8, centrifugal pump assembly; 9, driving motor; 10, main shaft; 11, pump casing; 12, pump cover plate; 13, water outlet pipe; 14, water inlet pipe; 15, protective cover; 16, connecting block; 17, shock absorption frame; 18, buffer block; 19, coupling; 20, elastic shock absorption fixing table; 21, through hole; 22, bearing; 23, gasket; 24, connecting shaft; 25, impeller; 26, pressing piece; 27, limiting hole; 28, limiting column; 29, through hole; 30, center plate; 31, spring; 32, limiting block; 33, arc groove; 34, U-shaped frame; 35, moving wheel; 36, stabilizing plate; 37, screw; 38, fixing block; 39, anti-slip seat; 40, guide rod. Specific Embodiments

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0030] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] An embodiment of the present invention provides a pump shaft axial position adjustment mechanism, as Figures 1 - 10As shown in the figure, it includes: a support plate 1, a moving and positioning component 2 is arranged at the bottom of the support plate 1, first shock-absorbing components 3 are respectively arranged around the top of the support plate 1, and a fixing plate 4 is arranged at the upper ends of the four first shock-absorbing components 3; a centrifugal pump component 8 is arranged in the middle of the upper end of the fixing plate 4. The centrifugal pump component 8 includes a driving motor 9 detachably and fixedly connected to one side of the upper end of the fixing plate 4, and an output end of the driving motor 9 is fixedly connected to a main shaft 10; a coupling 19 is installed in the middle of the main shaft 10, and the axis of the coupling 19 is on the surface of the main shaft 10.

[0032] It should be noted that due to the usability defects of existing centrifugal pumps, the axial position of the main shaft is not easy to change and the length dimension is difficult to guarantee. The length position of the main shaft cannot be adjusted according to the usage requirements. In this solution, a coupling 19 is arranged in the centrifugal pump component 8. According to the distance, the axial distance of the main shaft 10 is adjusted. When adjusting, the protective cover 15 needs to be opened, the coupling 19 is adjusted, and the distance of the main shaft 10 is adjusted. After the adjustment is completed, the coupling 19 needs to be tightened, the protective cover 15 is installed, and then it can be used. The overall device structure is reasonably designed. It can not only protect the pump during the working process and avoid damage, but also extend the main shaft 10 connected by adjusting the coupling 19 to achieve the purpose of adjusting the position of the main shaft 10. After adjustment, only the coupling 19 needs to be tightened, which is very convenient to use. By setting the moving and positioning component 2, it is convenient to move and fix. By setting the pressing piece 26, it is convenient to replace the gasket 23 to adjust the fine gap without replacing the impeller 25.

[0033] In a further preferred embodiment of the present invention, as Figures 1 - 9 shown, the centrifugal pump component 8 further includes protective covers 15 arranged at the upper and lower ends of the coupling 19; connecting blocks 16 are respectively fixedly connected to the sides of the upper and lower ends of the two protective covers 15 that are close to each other. Every two of the four connecting blocks 16 on the sides close to each other are detachably and fixedly connected; arc-shaped grooves 33 are respectively opened at both ends of the sides of the two protective covers 15 close to the main shaft 10. The four arc-shaped grooves 33 are respectively in contact with the upper and lower ends of both sides of the main shaft 10. Sealing strips are respectively fixedly connected to the walls of the four arc-shaped grooves 33, and the coupling 19 is located inside the two protective covers 15.

[0034] In this embodiment, it is convenient to protect the coupling 19 through the protective cover 15.

[0035] In a further preferred embodiment of the present invention, as Figures 1 - 9 shown, elastic shock-absorbing fixing platforms 20 are respectively fixedly connected to the upper end of the fixing plate 4 close to the tops of the two protective covers 15.

[0036] In this embodiment, it is convenient to support the protective cover 15 and at the same time, shock absorption is carried out on the vibration during operation.

[0037] In a further preferred embodiment of the present invention, asFigures 1 - 8 As shown, the centrifugal pump assembly 8 further includes a pump casing 11 provided at the extended end of the main shaft 10. One side of the pump casing 11 is communicated with a water inlet pipe 14, and the top of the pump casing 11 is communicated with a water outlet pipe 13. One side of the pump casing 11 close to the main shaft 10 is detachably and fixedly connected with a pump cover plate 12. A sealing ring is provided between the pump cover plate 12 and the pump casing 11. A through hole 21 is provided on the pump cover plate 12. The extended end of the main shaft 10 passes through the through hole 21. A bearing 22 is sleeved on the main shaft 10 and at the through hole 21. A gasket 23 is installed at the through hole 21 of the main shaft 10.

[0038] In this embodiment, it is convenient for connection.

[0039] In a further preferred embodiment of the present invention, as Figures 1 - 6 shown, the centrifugal pump assembly 8 further includes a connecting shaft 24 detachably and fixedly connected to the extended end of the main shaft 10 through a flange. The other side of the connecting shaft 24 is detachably and fixedly connected with an impeller 25.

[0040] In this embodiment, it is convenient for installation and fixation.

[0041] In a further preferred embodiment of the present invention, as Figures 1 - 10 shown, the centrifugal pump assembly 8 further includes a pressing piece 26 sleeved on one side of the main shaft 10 close to the pump cover plate 12. Four limiting columns 28 are respectively fixedly connected to the periphery of the side of the pump cover plate 12 close to the pressing piece 26. Limiting holes 27 are respectively provided in the periphery of the pressing piece 26. The four limiting columns 28 respectively pass through the four limiting holes 27.

[0042] In this embodiment, it is convenient to position the pressing piece 26.

[0043] In a further preferred embodiment of the present invention, as Figures 1 - 10 shown, the centrifugal pump assembly 8 further includes through holes 29 respectively provided on the four limiting columns 28. Central plates 30 are respectively fixedly connected in the middle of the four through holes 29. Springs 31 are respectively fixedly connected to both sides of the four central plates 30. The other sides of the eight springs 31 are respectively fixedly connected with limiting blocks 32.

[0044] In this embodiment, it is convenient to fix the position of the pressing piece 26.

[0045] In a further preferred embodiment of the present invention, as Figures 1 - 6 shown, both sides of the fixing plate 4 are respectively fixedly connected with side plates 5. A plurality of second shock-absorbing components 6 are installed on one side of the two side plates 5 close to each other. A buffer plate 7 is provided on the side of the second shock-absorbing component 6 close to the centrifugal pump assembly 8 among the plurality of second shock-absorbing components 6 close to one side. The two buffer plates 7 are respectively in contact with both sides of the centrifugal pump assembly 8.

[0046] In this embodiment, it is convenient for shock absorption.

[0047] In a further preferred embodiment of the present invention, as Figures 1 - 6 shown, the first shock absorption assembly 3 includes shock absorption frames 17 fixedly connected to the periphery of the upper end of the support plate 1 respectively. The upper ends of the four shock absorption frames 17 are slidably sleeved with buffer blocks 18. The four buffer blocks 18 are fixedly connected to the bottom of the fixed plate 4 respectively. Dampers are respectively installed between the four buffer blocks 18 and the interiors of the four shock absorption frames 17. Buffer springs are sleeved on the four dampers. A number of second shock absorption assemblies 6 are respectively consistent with the four first shock absorption assemblies 3 in structure.

[0048] In this embodiment, it is convenient for shock absorption.

[0049] In a further preferred embodiment of the present invention, as Figures 1 - 6 shown, the moving and positioning assembly 2 includes U-shaped frames 34 fixedly connected to the periphery of the bottom of the support plate 1 respectively. The same moving wheel 35 is rotatably connected between the two sides of the four U-shaped frames 34. Firm plates 36 are respectively fixedly connected to the middle of the two sides of the support plate 1. Screws 37 are respectively arranged at the upper middle of the two firm plates 36. The two screws 37 are respectively threadedly connected to the two firm plates 36. The extended ends of the two screws 37 respectively pass through the two firm plates 36 and are rotatably connected with fixing blocks 38. The bottoms of the two fixing blocks 38 are detachably fixedly connected with anti-slip seats 39. Guide rods 40 are respectively fixedly connected to the two sides of the upper ends of the two fixing blocks 38. The extended ends of the four guide rods 40 respectively pass through the two firm plates 36.

[0050] In this embodiment, it is convenient to move and at the same time convenient to fix.

[0051] The electrical components mentioned in the text are all electrically connected to the controller and the power supply. The control mode of the present invention is controlled by the controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of the power supply also belongs to the common knowledge in the art. And the present invention is mainly used to protect mechanical devices, so the control mode and circuit connection of the present invention will not be explained in detail.

[0052] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0053] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0054] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that are essentially not divorced from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. An axial position adjusting mechanism for a pump shaft, characterized in that, Comprising: A support plate, a moving and positioning component is arranged at the bottom of the support plate, and first damping components are respectively arranged around the top of the support plate, and a fixing plate is arranged at the upper ends of the four first damping components; In the middle of the upper end of the fixing plate, a centrifugal pump assembly is arranged. The centrifugal pump assembly includes a driving motor detachably and fixedly connected to one side of the upper end of the fixing plate, and a main shaft is fixedly connected to the output end of the driving motor; A coupling is installed in the middle of the main shaft, and the axis of the coupling is on the surface of the main shaft.

2. The axial position adjusting mechanism for a pump shaft according to claim 1, wherein The centrifugal pump assembly further includes protective covers arranged at the upper and lower ends of the coupling; Connecting blocks are respectively fixedly connected to the sides of the upper and lower ends of the two protective covers close to each other. Among the four connecting blocks, every two connecting blocks on the sides close to each other are detachably and fixedly connected; Arc-shaped grooves are respectively opened at both ends of the two protective covers close to the main shaft. The four arc-shaped grooves are respectively in contact with the upper and lower ends of both sides of the main shaft. Sealing strips are respectively fixedly connected to the walls of the four arc-shaped grooves, and the coupling is located inside the two protective covers.

3. The axial position adjustment mechanism of a pump shaft according to claim 2, characterized in that, Elastic damping fixing platforms are respectively fixedly connected to the upper end of the fixing plate close to the tops of the two protective covers.

4. The axial position adjusting mechanism of a pump shaft according to claim 2, characterized in that The centrifugal pump assembly further includes a pump housing arranged at the extended end of the main shaft. A water inlet pipe is communicated with one side of the pump housing, a water outlet pipe is communicated with the top of the pump housing. A pump cover plate is detachably and fixedly connected to the side of the pump housing close to the main shaft. A sealing ring is arranged between the pump cover plate and the pump housing. A through hole is opened on the pump cover plate. The extended end of the main shaft passes through the through hole. A bearing is sleeved at the through hole of the main shaft, and a gasket is installed at the through hole of the main shaft.

5. The axial position adjusting mechanism of a pump shaft according to claim 4, characterized in that, The centrifugal pump assembly further includes that the extended end of the main shaft is detachably and fixedly connected to a connecting shaft through a flange plate, and the other side of the connecting shaft is detachably and fixedly connected to an impeller.

6. The axial position adjustment mechanism of a pump shaft according to claim 5, characterized in that, The centrifugal pump assembly further includes a pressing piece sleeved on the side of the main shaft close to the pump cover plate. Limit columns are respectively fixedly connected to the four sides of the pump cover plate close to the pressing piece. Limit holes are respectively opened on the four sides of the pressing piece. The four limit columns respectively pass through the four limit holes.

7. The axial position adjusting mechanism of a pump shaft according to claim 6, characterized in that, The centrifugal pump assembly further includes through holes respectively opened on the four limit columns. Central plates are respectively fixedly connected in the middle of the four through holes. Springs are respectively fixedly connected to both sides of the four central plates. The other sides of the eight springs are respectively fixedly connected to limit blocks.

8. A pump shaft axial position adjusting mechanism according to claim 1, characterized in that, Side plates are respectively fixedly connected to both sides of the fixing plate. A number of second damping components are installed on the sides of the two side plates close to each other. Among the number of second damping components, the second damping component on the side close to one side is provided with a buffer plate on the side close to the centrifugal pump assembly. The two buffer plates are respectively in contact with both sides of the centrifugal pump assembly.

9. The axial position adjusting mechanism of a pump shaft according to claim 8, characterized in that, The first damping component includes damping frames respectively fixedly connected to the four sides of the upper end of the support plate. Buffer blocks are slidably sleeved at the upper ends of the four damping frames. The four buffer blocks are all fixedly connected to the bottom of the fixing plate. Dampers are respectively installed between the four buffer blocks and the interiors of the four damping frames. Buffer springs are sleeved on the four dampers. The number of second damping components is respectively the same as the structures of the four first damping components.

10. A pump shaft axial position adjusting mechanism according to claim 1, characterized in that, The mobile positioning component includes U-shaped frames fixedly connected to the four sides around the bottom of the support plate respectively. The same mobile wheel is rotatably connected between the two sides of the four U-shaped frames. The middle of the two sides of the support plate is fixedly connected with stabilizing plates respectively. Between the two stabilizing plates, screws are arranged at the upper ends respectively. The two screws are threadedly connected to the two stabilizing plates respectively. The extended ends of the two screws respectively pass through the two stabilizing plates and are rotatably connected with fixing blocks. The bottoms of the two fixing blocks are detachably and fixedly connected with anti-slip seats. On both sides of the upper ends of the two fixing blocks, guide rods are fixedly connected respectively. The extended ends of the four guide rods respectively pass through the two stabilizing plates.

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