Variable guide vane structure of multistage centrifugal pump
By designing a variable guide vane structure in a multi-stage centrifugal pump, and using the ring body and the clamping mechanism to achieve flexible adjustment of the guide vane, the problem of fixing and difficult to maintain the guide vane structure is solved, and the flexibility and maintainability of the pump are improved.
Patent Information
- Application Number
- CN202421458271.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The guide vane structure of the existing multi-stage centrifugal pump is fixed, making it difficult to adjust the position and angle of the guide vane, and the entire guide vane needs to be replaced after damage, which is relatively inconvenient.
A variable guide vane structure of a multi-stage centrifugal pump is designed, adopting a ring body and a clamping mechanism. Through the cooperation of the slider and the rotating rod, the position and angle of the guide bar can be manually adjusted, and the position and angle of the guide bar can be fixed through the clamp ring and the internal thread ring.
It realizes flexible adjustment of the guide blades on the guide vanes, adjusts their specifications, quantity, distribution position and angle as needed, and can be replaced after the guide bar is damaged, improving the maintainability and flexibility of the pump.
Smart Images
Figure CN222668483U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of multi-stage centrifugal pumps, in particular to a variable guide vane structure of a multi-stage centrifugal pump. Background Art
[0002] Generally, multi-stage centrifugal pumps are equipped with guide vanes, which can guide the fluid. Generally, the guide vanes are annular, and there are arc-shaped convex strips on one side of the guide vanes. These convex strips are called guide vanes or splitter vanes. These guide vanes can make the fluid smoothly transition from the first stage pump to the next stage pump, reduce the impact of the fluid, and play a role in assisting in guiding the fluid. Most of the guide vanes are integrally formed, resulting in the guide vanes on them being mostly fixed on the guide vanes, making it difficult to adjust the position and angle of the guide vanes as needed. In addition, when the guide vanes are damaged, the entire guide vanes need to be replaced, which is inconvenient. Utility Model Content
[0003] The purpose of the utility model is to provide a variable guide vane structure of a multi-stage centrifugal pump to solve the problems raised in the above background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A variable guide vane structure of a multi-stage centrifugal pump comprises a ring body, a clamping groove is provided at the center of the top surface of the ring body, and a plurality of clamping mechanisms are arranged inside the clamping groove;
[0006] The clamping mechanism includes a guide bar, a slider is arranged below the guide bar, and a rotating rod is fixedly connected to the center of the bottom surface of the guide bar, the bottom surface of the slider is fixedly connected to the bottom plate, and the bottom end of the rotating rod passes through the slider and the bottom plate, the bottom end of the rotating rod is rotatably clamped with the bottom surface of the bottom plate, and a notch is opened on the top surface of the ring body.
[0007] Further, the inner wall of the ring body is movably sleeved with a threaded barrel, the outer wall of the threaded barrel is fixedly sleeved with a clamping ring, the outer wall of the threaded barrel is slidably sleeved with a pressure ring, and the pressure ring is located below the clamping ring.
[0008] Furthermore, an internal thread ring is screwed on the outer wall of the threaded barrel, and the internal thread ring is located at the bottom surface of the ring body.
[0009] Furthermore, a rectangular hole is opened on one side of the sliding block, and the rotating rod is located inside the rectangular hole, and a clamping strip is fixedly connected to the outer side wall of the rotating rod.
[0010] Furthermore, a rubber pad is fixedly connected to the top surface of the clamp ring.
[0011] Furthermore, the guide strip is an arc-shaped strip structure.
[0012] The invention further comprises: a rubber clamping plate is movably clamped inside the notch.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] By selecting a suitable number and suitable specifications of clamping mechanisms, and then sliding the sliders and bottom plates on each clamping mechanism into the inside of the clamping slot through the notch, multiple bottom plates are located between the pressure ring and the bottom surface of the clamping slot, and multiple clamping strips are located between the clamping ring and the pressure ring. Then, the user can manually slide the slider to adjust the position of each guide strip on the ring body, and can adjust the angle of each guide strip by rotating each guide strip. Then, the user can press the clamping ring and tighten the internal threaded ring so that the clamping ring and the pressure ring press and fix the multiple clamping strips and the bottom plate, thereby fixing the positions and angles of the multiple guide strips, so that the user can adjust the specifications and quantity of the guide vanes on the guide vanes as needed, and can freely adjust the distribution position and angle of the guide vanes on the guide vanes, and can replace the guide strips after they are damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the structure of the clamping mechanism, the ring body, the pressure ring and the clamping ring in the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the clamping mechanism in the utility model;
[0018] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the ring body in the utility model.
[0019] In the figure: 100, ring body; 101, slot; 102, notch; 200, clamping mechanism; 210, guide strip; 211, rotating rod; 212, clamping strip; 220, slider; 221, rectangular hole; 230, bottom plate; 300, rubber clamping plate; 400, threaded cylinder; 410, clamping ring; 420, pressure ring; 430, rubber pad; 440, internal thread ring. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figures 1 to 4In an embodiment of the utility model, a variable guide vane structure of a multi-stage centrifugal pump includes a ring body 100, a clamping groove 101 is opened at the center of the top surface of the ring body 100, and a plurality of clamping mechanisms 200 are arranged inside the clamping groove 101;
[0022] The clamping mechanism 200 includes a guide bar 210, a slider 220 is arranged below the guide bar 210, and a rotating rod 211 is fixedly connected to the center of the bottom surface of the guide bar 210, a bottom surface of the slider 220 is fixedly connected to the bottom plate 230, and the bottom end of the rotating rod 211 passes through the slider 220 and the bottom plate 230, the bottom end of the rotating rod 211 is rotatably clamped with the bottom surface of the bottom plate 230, and a notch 102 is opened on the top surface of the ring body 100.
[0023] Specifically, the guide strips 210 on the multiple clamping mechanisms 200 have different specifications, while the sliders 220 and the bottom plates 230 have the same specifications. The user can select the clamping mechanisms 200 of appropriate number and specifications, and embed the sliders 220 and the bottom plates 230 on each clamping mechanism 200 into various places inside the clamping groove 101 through the notch 102, so that the multiple guide strips 210 constitute the guide vanes on the guide vanes, and the ring body 100 constitutes the guide vanes, so that the user can adjust the specifications and quantity of the guide vanes on the guide vanes as needed, and can manually adjust the position of each guide strip 210 on the ring body 100 to adjust the distribution position of the guide vanes on the guide vanes, and the guide strips 210 can be replaced if they are damaged.
[0024] Embodiment 1
[0025] like Figure 2-4 As shown, in this embodiment, a threaded tube 400 is movably sleeved on the inner wall of the ring body 100, and a clamping ring 410 is fixedly sleeved on the outer wall of the threaded tube 400, a pressing ring 420 is slidably sleeved on the outer wall of the threaded tube 400, and the pressing ring 420 is located below the clamping ring 410, an internal threaded ring 440 is screwed on the outer wall of the threaded tube 400, and the internal threaded ring 440 is located at the bottom surface of the ring body 100, a rectangular hole 221 is opened on one side of the slider 220, and the rotating rod 211 is located inside the rectangular hole 221, and a clamping strip 212 is fixedly connected to the outer wall of the rotating rod 211.
[0026] In the present embodiment, when the user inserts the sliders 220 and the bottom plates 230 on the multiple clamping mechanisms 200 into the inside of the clamping slot 101, the sliders 220 on the multiple clamping mechanisms 200 are all located in the gap between the clamping ring 410, the pressing ring 420 and the inner wall of the clamping slot 101, the bottom plates 230 on the multiple clamping mechanisms 200 are all located in the gap between the pressing ring 420 and the inner bottom surface of the clamping slot 101, and the clamping strips 212 on the multiple clamping mechanisms 200 are all located in the gap between the clamping ring 410 and the pressing ring 420. The user can manually slide each slider 220 to adjust each guide The strips 210 are positioned on the ring body 100, and the user can rotate the multiple guide strips 210 to make them rotate around the adjacent rotating rods 211 and adjust the angles of the guide strips 210. Then the user can press the clamp ring 410 and rotate the internal threaded ring 440 to make the clamp ring 410 press the pressure ring 420 to fix the positions of the multiple clamp strips 212, thereby fixing the rotation angles of the multiple guide strips 210. At the same time, after the pressure ring 420 is pressed, each bottom plate 230 is pressed against the inner bottom surface of the card slot 101 to fix it, thereby synchronously fixing the positions of the multiple card connection mechanisms 200 on the ring body 100.
[0027] like Figure 2-3 As shown, in this embodiment, a rubber pad 430 is fixedly connected to the top surface of the clamp ring 410, and the guide strip 210 is an arc-shaped strip structure.
[0028] During specific implementation, the guide strip 210 is arc-shaped to facilitate the diversion of water flow, and the rubber pad 430 is soft rubber with elasticity. When the user tightens the internal threaded ring 440, the clamp ring 410 presses the pressure ring 420 to fix the positions of the multiple clamp strips 212 and the bottom plate 230, and the rubber pad 430 is attached to the bottom surfaces of the multiple guide strips 210. When the user loosens the internal threaded ring 440, when the user slides the slider 220 or rotates the guide strip 210, the clamp ring 410 is bound to move up to facilitate the movement of the bottom plate 230 and the clamp strip 212. At this time, because the rubber pad 430 is soft and conflicts with the guide strip 210 and is deformed, it is not easy to affect the movement of the bottom plate 230 and the clamp strip 212.
[0029] Embodiment 2
[0030] On the basis of the first embodiment, the gap 102 can be blocked by providing a rubber clamping plate 300 .
[0031] like Figure 1-2 As shown, in this embodiment, a rubber clamping plate 300 is movably clamped inside the notch 102 .
[0032] During specific implementation, the rubber clamping plate 300 is interference-fitted with the notch 102 . When in use, the rubber clamping plate 300 can be inserted into the notch 102 to block the notch 102 .
[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A variable guide vane structure of a multi-stage centrifugal pump, comprising a ring body (100), characterized in that: A clamping groove (101) is provided at the center of the top surface of the ring body (100), and a plurality of clamping mechanisms (200) are arranged inside the clamping groove (101); The clamping mechanism (200) comprises a guide bar (210), a slider (220) is arranged below the guide bar (210), a rotating rod (211) is fixedly connected to the center of the bottom surface of the guide bar (210), the bottom surface of the slider (220) is fixedly connected to the bottom plate (230), and the bottom end of the rotating rod (211) passes through the slider (220) and the bottom plate (230), the bottom end of the rotating rod (211) is rotatably clamped with the bottom surface of the bottom plate (230), and a notch (102) is provided on the top surface of the ring body (100).
2. The variable guide vane structure of a multi-stage centrifugal pump according to claim 1, characterized in that: The inner wall of the ring body (100) is movably sleeved with a threaded cylinder (400), and the outer wall of the threaded cylinder (400) is fixedly sleeved with a clamping ring (410), and the outer wall of the threaded cylinder (400) is slidably sleeved with a pressure ring (420), and the pressure ring (420) is located below the clamping ring (410).
3. The variable guide vane structure of a multi-stage centrifugal pump according to claim 2, characterized in that: An internal threaded ring (440) is screwed onto the outer wall of the threaded cylinder (400), and the internal threaded ring (440) is located at the bottom surface of the ring body (100).
4. The variable guide vane structure of a multi-stage centrifugal pump according to claim 3, characterized in that: A rectangular hole (221) is provided on one side of the sliding block (220), and the rotating rod (211) is located inside the rectangular hole (221). A clamping strip (212) is fixedly connected to the outer side wall of the rotating rod (211).
5. The variable guide vane structure of a multi-stage centrifugal pump according to claim 4, characterized in that: A rubber pad (430) is fixedly connected to the top surface of the clamp ring (410).
6. The variable guide vane structure of a multi-stage centrifugal pump according to claim 5, characterized in that: The guide strip (210) is an arc-shaped strip structure.
7. The variable guide vane structure of a multi-stage centrifugal pump according to claim 6, characterized in that: A rubber clamping plate (300) is movably clamped inside the notch (102).