Mixed-flow pump impeller capable of preventing reverse rotation of transmission shaft

Abstract

The utility model relates to the technical field of mixed-flow pump impellers, and discloses a mixed-flow pump impeller capable of preventing a transmission shaft from rotating reversely, which comprises an impeller body, a rotating shaft is mounted in the impeller body, fan blades are uniformly mounted at one end of the impeller body, a limiting seat is fixed at the other end of the impeller body, and fixing shafts are fixed at two ends in the limiting seat. The outer side walls of the fixing shafts are movably sleeved with arc-shaped check blocks, and an annular rack is fixed to one end of the outer side wall of the rotating shaft. According to the utility model, the components such as the limiting seat, the annular rack, the arc-shaped baffle block and the fixed shaft are arranged and are additionally arranged at one end of the limiting seat, so that the impeller can normally rotate in the forward direction under the matching of the components during rotating operation; on the contrary, if the impeller rotates reversely, the arc-shaped check block on one side of the impeller cannot be clamped with the annular rack and cannot rotate together, so that the impeller is prevented from being driven by the transmission shaft to rotate reversely, the mixed-flow pump is ensured to maintain stable operation, and the mixed-flow pump is safer to use.

Description

Technical Field

[0001] The utility model relates to the technical field of mixed flow pump impellers, in particular to a mixed flow pump impeller which can prevent a transmission shaft from reversing. Background Art

[0002] The mixed flow pump impeller is a pump that combines a centrifugal pump and an axial flow pump. The pump has the characteristics of high head and large flow, smooth operation, high efficiency and energy saving. It is commonly used in urban water supply, agricultural irrigation and water treatment. The mixed flow pump impeller is a component in the mixed flow pump. The impeller is composed of multiple curved blades with axial inclination and radial curvature, which makes the flow of liquid entering and leaving the impeller smoother.

[0003] During the use of the traditional mixed flow pump impeller, it is necessary to ensure that the shaft drives the impeller to always rotate in one direction and avoid the impeller from rotating in the opposite direction. Both forward and reverse rotation will affect the stability of the mixed flow pump. Therefore, we propose a mixed flow pump impeller that prevents the transmission shaft from reversing to improve the above problem. Utility Model Content

[0004] The utility model aims to provide a mixed flow pump impeller which can prevent the transmission shaft from reversing, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a mixed flow pump impeller for preventing the transmission shaft from reversing, comprising a wheel body, a rotating shaft installed inside the wheel body, fan blades evenly installed on one end of the wheel body, a limiting seat fixed to the other end of the wheel body, fixed shafts are fixed at both ends inside the limiting seat, and the outer side walls of the fixed shafts are movably fitted with arc-shaped stoppers, and an annular rack is fixed to one end of the outer side wall of the rotating shaft.

[0006] Preferably, the fan blades are designed to be arc-shaped, and the fan blades are distributed in a circular shape with equal intervals at one end of the wheel body.

[0007] Preferably, two groups of arc-shaped stops are provided, and the arc-shaped stops are matched with the annular racks.

[0008] Preferably, a mounting groove is provided inside the wheel body, a mounting block is movably provided inside the mounting groove, and one end of the mounting block is fixed to one end of the fan blade, and fixing bolts are movably provided inside the mounting groove and the mounting block.

[0009] Preferably, the cross section of the mounting block matches the cross section of the mounting groove, and a snap-fit ​​structure is formed between the mounting block and the mounting groove.

[0010] Preferably, a small reinforcement ring is provided on the inner wall of the wheel body, a large reinforcement ring is provided on the periphery of the small reinforcement ring, reinforcement frames are welded and fixed inside the small reinforcement ring and reinforcing ribs are welded and fixed inside the reinforcement frames, and the surfaces of the wheel body and the fan blades are evenly coated with an anti-corrosion coating.

[0011] Preferably, a plurality of the reinforcement frames are provided, and the plurality of the reinforcement frames are distributed in a circular shape at equal intervals inside the large reinforcement ring and the small reinforcement ring.

[0012] Preferably, the reinforcing ribs are designed in an X shape, and the reinforcement frame is designed in a triangular shape.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the mixed flow pump impeller for preventing the transmission shaft from rotating in reverse not only realizes the function of preventing the transmission shaft from driving the impeller to rotate in the reverse direction, realizes that the fan blades can be disassembled and replaced, and realizes that the structural strength of the impeller is greatly increased, thereby extending the service life of the impeller;

[0014] (1) By providing components such as a limit seat, an annular rack, an arc-shaped stopper and a fixed shaft, the above components are added to one end of the limit seat, so that the impeller can rotate normally in the forward direction under the cooperation of the above components during rotation operation. On the contrary, if the impeller rotates in the reverse direction, the arc-shaped stopper on one side of the impeller will not be engaged with the annular rack and cannot rotate, thereby preventing the transmission shaft from driving the impeller to rotate in the reverse direction, ensuring that the mixed flow pump maintains stable operation and is safer to use;

[0015] (2) By providing components such as mounting grooves, mounting blocks and fixing bolts, if the blades of the impeller are deformed or broken during use, the addition of the above components allows the blades to be disassembled from one end of the wheel body for replacement and maintenance, thereby achieving the disassembly and replacement of the blades at one end of the impeller, avoiding the need to replace the entire impeller due to damage to one of the blades, thereby saving costs;

[0016] (3) By providing components such as a large reinforcement ring, a small reinforcement ring, reinforcement ribs and a reinforcement frame, the impeller has the above components added inside the impeller during use, so that the overall structural strength of the impeller is greatly increased. As the use time increases, it is not easy to cause deformation and cracking, thereby effectively extending the service life of the impeller and achieving better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 It is a side view structural diagram of the annular rack of the utility model;

[0020] Figure 4 For the utility model Figure 1 A schematic diagram of the enlarged cross-section structure at the middle A;

[0021] Figure 5 It is a front view structural schematic diagram of the reinforcement frame of the utility model.

[0022] In the figure: 1. wheel body; 2. anti-corrosion coating; 3. mounting groove; 4. fan blades; 5. rotating shaft; 6. limit seat; 7. annular rack; 8. arc-shaped stopper; 9. fixed shaft; 10. mounting block; 11. fixing bolt; 12. large reinforcement ring; 13. small reinforcement ring; 14. reinforcing ribs; 15. reinforcement frame. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1: Please refer to Figure 1-5 , a mixed flow pump impeller for preventing the transmission shaft from reversing, comprising a wheel body 1, a rotating shaft 5 is installed inside the wheel body 1, blades 4 are evenly installed at one end of the wheel body 1, a limiting seat 6 is fixed to the other end of the wheel body 1, fixed shafts 9 are fixed at both ends inside the limiting seat 6, and arc-shaped stoppers 8 are movably mounted on the outer wall of the fixed shaft 9, an annular rack 7 is fixed to one end of the outer wall of the rotating shaft 5, the blades 4 are designed to be arc-shaped, and the blades 4 are distributed in an annular manner at equal intervals at one end of the wheel body 1, so that the flow of liquid entering and leaving the impeller is smoother, and two groups of arc-shaped stoppers 8 are provided, which are matched with the annular rack 7 and more stably engage with the annular rack 7 to drive the impeller to rotate;

[0025] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, when the rotating shaft 5 and the impeller are assembled, the annular rack 7 needs to be welded and fixed to a suitable position on the outer wall of the rotating shaft 5, corresponding to the arc-shaped stopper 8. When the rotating shaft 5 rotates forward, the annular rack 7 fixed on its outer wall will engage with the arc-shaped stopper 8, thereby driving the impeller to rotate. If the rotating shaft 5 rotates reversely, the annular rack 7 and the arc-shaped stopper 8 will not engage with each other and cannot drive the impeller to rotate, thereby preventing the impeller from rotating reversely.

[0026] Embodiment 2: The wheel body 1 is provided with a mounting groove 3 inside, a mounting block 10 is movably provided inside the mounting groove 3, and one end of the mounting block 10 is fixed to one end of the fan blade 4, a fixing bolt 11 is movably provided inside the mounting groove 3 and the mounting block 10, the cross section of the mounting block 10 is matched with the cross section of the mounting groove 3, and a snap-fit ​​structure is formed between the mounting block 10 and the mounting groove 3, so that the fan blade 4 and the wheel body 1 are stably assembled together;

[0027] Specifically, Figure 1 and Figure 4 As shown, when a single fan blade 4 is damaged, the fixing bolt 11 is unscrewed and the fan blade 4 is pulled toward one end so that the mounting block 10 is disengaged from the inside of the mounting groove 3. Then a new fan blade 4 is taken and the mounting block 10 at one end is aligned with the mounting groove 3 and installed. The fixing bolt 11 is then screwed in to fix it. Then the damaged fan blade 4 can be disassembled and replaced.

[0028] Embodiment 3: A small reinforcement ring 13 is provided on the inner wall of the wheel body 1, a large reinforcement ring 12 is provided on the periphery of the small reinforcement ring 13, a reinforcement frame 15 is welded and fixed inside the small reinforcement ring 13 and the large reinforcement ring 12, and a reinforcing rib 14 is welded and fixed inside the reinforcement frame 15, the surface of the wheel body 1 and the fan blade 4 is evenly coated with an anti-corrosion coating 2, a plurality of reinforcement frames 15 are provided, and the plurality of reinforcement frames 15 are distributed in a circular shape with equal spacing inside the large reinforcement ring 12 and the small reinforcement ring 13, the reinforcing rib 14 is designed in an X shape, and the reinforcement frame 15 adopts a triangular design, which has a better reinforcement effect on the wheel body 1 and makes the structural strength of the wheel body 1 stronger;

[0029] Specifically, Figure 5 As shown, a large reinforcement ring 12 and a small reinforcement ring 13 are added inside the wheel body 1, and reinforcement frames 15 and reinforcing ribs 14 are added at equal intervals between the large reinforcement ring 12 and the small reinforcement ring 13 to make the overall structure of the wheel body 1 more solid and less likely to deform during use.

[0030] Working principle: When the utility model is in use, the impeller is installed inside the mixed flow pump. During the installation process, the annular rack 7 is welded and fixed to the outer wall of the rotating shaft 5 corresponding to the arc stopper 8. The power source drives the rotating shaft 5 to rotate, and the rotating shaft 5 rotates the outer wall to fix the annular rack 7 to rotate and engage with the arc stopper 8 to drive the impeller to rotate forward. If the power source transmits reverse power to the rotating shaft 5, the annular rack 7 rotates in the reverse direction and disengages from the engagement with the arc stopper 8, and the impeller cannot be driven to rotate, thereby avoiding the reverse rotation of the impeller. When a single blade 4 in the impeller is damaged, the fixing bolt 11 can be screwed out and the blade 4 can be pulled to one end so that the mounting block 10 is detached from the inside of the mounting groove 3, and the blade 4 can be disassembled and assembled, and a new blade 4 can be taken out and installed. In addition, because a large reinforcement ring 12, a small reinforcement ring 13 and reinforcing ribs 14 and other components are used inside the wheel body 1, the structural strength of the impeller is improved and it is not easy to be deformed and damaged.

[0031] 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.

Claims

1. A mixed flow pump impeller for preventing a transmission shaft from rotating inversely, comprising a wheel body (1), characterized in that: A rotating shaft (5) is installed inside the wheel body (1), and fan blades (4) are evenly installed on one end of the wheel body (1). A limiting seat (6) is fixed to the other end of the wheel body (1), and a fixed shaft (9) is fixed to both ends of the limiting seat (6), and an arc-shaped stopper (8) is movably mounted on the outer wall of the fixed shaft (9). An annular rack (7) is fixed to one end of the outer wall of the rotating shaft (5).

2. A mixed flow pump impeller for preventing the reverse rotation of the transmission shaft according to claim 1, characterized in that: The fan blades (4) are designed to be arc-shaped, and the fan blades (4) are distributed in a ring-shaped manner at one end of the wheel body (1) with equal spacing.

3. The mixed flow pump impeller for preventing the reverse rotation of the transmission shaft according to claim 1, characterized in that: The arc-shaped stoppers (8) are provided in two groups, and the arc-shaped stoppers (8) are matched with the annular rack (7).

4. The mixed flow pump impeller for preventing the reverse rotation of the transmission shaft according to claim 1, characterized in that: The wheel body (1) is provided with a mounting groove (3) inside, a mounting block (10) is movably provided inside the mounting groove (3), one end of the mounting block (10) is fixed to one end of the fan blade (4), and fixing bolts (11) are movably provided inside the mounting groove (3) and the mounting block (10).

5. The mixed flow pump impeller for preventing the reverse rotation of the transmission shaft according to claim 4, characterized in that: The cross section of the mounting block (10) matches the cross section of the mounting groove (3), and a snap-fit ​​structure is formed between the mounting block (10) and the mounting groove (3).

6. The mixed flow pump impeller for preventing the reverse rotation of the transmission shaft according to claim 1, characterized in that: The inner wall of the wheel body (1) is provided with a small reinforcement ring (13), and the outer periphery of the small reinforcement ring (13) is provided with a large reinforcement ring (12). The insides of the small reinforcement ring (13) and the large reinforcement ring (12) are both welded and fixed with reinforcement frames (15), and the insides of the reinforcement frames (15) are both welded and fixed with reinforcing ribs (14). The surfaces of the wheel body (1) and the fan blades (4) are evenly coated with an anti-corrosion coating (2).

7. The mixed flow pump impeller for preventing the transmission shaft from reversing according to claim 6, characterized in that: A plurality of the reinforcement frames (15) are provided, and the plurality of the reinforcement frames (15) are distributed in a circular shape at equal intervals inside the large reinforcement ring (12) and the small reinforcement ring (13).

8. The mixed flow pump impeller for preventing the reverse rotation of the transmission shaft according to claim 6, characterized in that: The reinforcing rib (14) is designed in an X shape, and the reinforcing frame (15) is designed in a triangular shape.

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