Chemical axial flow pump impeller locking device

Abstract

The utility model particularly discloses a chemical axial flow pump impeller locking device which comprises a flow guide sleeve, an anti-loose gasket, a locking nut, an impeller and an impeller shaft, the locking nut and one end of the impeller shaft are in threaded connection to an inner shaft hole of the impeller, the impeller is fixed to the impeller shaft, and the outer side of the locking nut is of a polygonal structure. A polygonal hole matched with the shape of the outer side of the locking nut is formed in the anti-loose gasket, the locking nut is located in the polygonal hole of the anti-loose gasket, and the flow guide sleeve is fixedly located on the side, away from the impeller shaft, of the locking nut and fixes the anti-loose gasket to the impeller. According to the axial flow pump impeller locking device, the impeller can be fixed to the impeller shaft through threaded connection of the locking nut and the impeller shaft, meanwhile, the locking nut is locked to the impeller on the basis of combination of the anti-loose gasket and the outer side of the locking nut, and therefore locking of the axial flow pump impeller is achieved. Therefore, the utility model has the characteristics of simple structure and reliable performance.

Description

Technical Field

[0001] The present application relates to the technical field of impellers, and in particular to an impeller locking device for a chemical axial flow pump. Background Art

[0002] Chemical axial-flow pumps are widely used in industries such as salt production, alkali treatment, and waste liquid recovery. They transport highly corrosive media containing solid particles, making them a crucial piece of equipment in crystallization and evaporation processes. As the core component of chemical axial-flow pumps, the impeller rotates with the shaft to transport the medium. During operation, it is subject to impact from the medium and axial forces caused by fluid pressure differentials. Furthermore, when the pump is stopped, water hammer can cause the impeller to briefly reverse direction. To ensure proper operation, a locking device must be designed into the impeller shaft to prevent it from loosening.

[0003] In view of this, the present application provides a chemical axial flow pump impeller locking device with reliable performance. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a chemical axial flow pump impeller locking device, including a guide sleeve, an anti-loosening gasket, a locking nut, an impeller and an impeller shaft. The locking nut and one end of the impeller shaft are threadedly connected to the internal shaft hole of the impeller and fix the impeller on the impeller shaft. The outer side of the locking nut is a polygonal structure, and the anti-loosening gasket is provided with a polygonal hole corresponding to the shape of the outer side of the locking nut. The locking nut is located in the polygonal hole of the anti-loosening gasket, and the guide sleeve is fixed on the side of the locking nut away from the impeller shaft and fixes the anti-loosening gasket on the impeller.

[0005] In some embodiments, both side end surfaces of the anti-loosening gasket are provided with O-shaped grooves, and each O-shaped groove is provided with an O-ring.

[0006] In some embodiments, multiple screws are also included. The guide sleeve is provided with a first threaded hole in a ring shape corresponding to the screws one-to-one, the impeller is provided with a second threaded hole corresponding to the first threaded hole one-to-one, and the anti-loosening gasket is provided with a third threaded hole corresponding to the first threaded hole one-to-one. The anti-loosening gasket is fixed to the impeller by screws passing through the first threaded hole, the third threaded hole and the second threaded hole in sequence.

[0007] In some embodiments, multiple screws are also included. The guide sleeve is provided with a first threaded hole in an annular shape corresponding to the screws one-to-one, the impeller is provided with a second threaded hole corresponding one-to-one to the first threaded hole, and the anti-loosening gasket is provided with an annular groove corresponding to the first threaded hole. The anti-loosening gasket is fixed to the impeller by screws passing through the first threaded hole, the annular groove and the second threaded hole in sequence.

[0008] In some embodiments, a plurality of the screws are distributed in a circular array.

[0009] In some embodiments, spring washers corresponding to the screws are further included, and the spring washers are arranged in the first threaded holes.

[0010] In some embodiments, the outer side of the locking nut is a regular hexagonal structure, and the anti-loosening washer is provided with a regular hexagonal hole that matches the outer side of the locking nut.

[0011] Compared with the prior art, the present application provides a chemical axial flow pump impeller locking device that utilizes a locking nut threadedly connected to one end of the impeller shaft to secure the impeller to the impeller shaft. Simultaneously, the locking nut is secured to the impeller based on a combination of a guide sleeve and a locking washer, such that when the axial flow pump is shut down, the locking nut cannot rotate in either the forward or reverse direction, thereby achieving locking of the axial flow pump impeller. Therefore, the present application effectively reduces the requirements for the locking nut thread direction, and has the characteristics of simple structure and reliable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded view of the structure of the impeller locking device of a chemical axial flow pump in some embodiments of the present application.

[0013] Figure 2 This is a cross-sectional view of the impeller locking device of a chemical axial flow pump in some embodiments of the present application.

[0014] Figure 3 It is a schematic structural diagram of the anti-loosening gasket in some embodiments of the present application.

[0015] In the figure: 1. guide sleeve, 2. screw, 3. spring washer, 4. O-ring, 5. anti-loosening washer, 51. annular groove, 6. locking nut, 7. impeller, 8. impeller shaft. DETAILED DESCRIPTION

[0016] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear to indicate the orientation or position relationship, unless otherwise specified, they are understood to be based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting this application.

[0017] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; mechanical connections, electrical connections, direct connections, or indirect connections through an intermediary; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0018] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0019] See also Figure 1-Figure 3 As shown, an embodiment of the present application provides a chemical axial flow pump impeller locking device, including a guide sleeve 1, an anti-loosening gasket 5, a locking nut 6, an impeller 7 and an impeller shaft 8, wherein the locking nut 6 and one end of the impeller shaft 8 are threadedly connected to the internal shaft hole of the impeller 7 and fix the impeller 7 on the impeller shaft 8, the outer side of the locking nut 6 is a polygonal structure, and the anti-loosening gasket 5 is provided with a polygonal hole corresponding to the shape of the outer side of the locking nut 6, the locking nut 6 is located in the polygonal hole of the anti-loosening gasket 5, and the guide sleeve 1 is fixed on the side of the locking nut 6 away from the impeller shaft 8 and fixes the anti-loosening gasket 5 on the impeller 7.

[0020] In the above embodiment, the impeller 7 is fixed to the impeller shaft 8 by threading the locking nut 6 with one end of the impeller shaft 8. At the same time, the locking nut 6 is fixed to the impeller 7 based on the combination of the guide sleeve 1 and the anti-loosening washer 5. When the axial flow pump is stopped, the locking nut 6 cannot rotate in either the forward or reverse direction, thereby achieving the locking of the axial flow pump impeller. Therefore, the present application effectively reduces the requirements for the thread rotation direction of the locking nut 6, and has the characteristics of simple structure and reliable performance.

[0021] In some embodiments, both side end surfaces of the anti-loosening gasket 5 are provided with O-shaped grooves, and each O-shaped groove is provided with an O-ring 4.

[0022] In the above embodiment, by providing O-shaped grooves and O-rings 4 on both sides of the anti-loosening gasket 5, it can not only play a sealing role, but also reduce the friction and wear of the end faces on both sides of the anti-loosening gasket 5, thereby extending the service life of the component to a certain extent.

[0023] In some embodiments, multiple screws 2 are further included, and the guide sleeve 1 is provided with a first threaded hole (not shown in the figure) in a ring shape corresponding to the screw 2, the impeller 7 is provided with a second threaded hole (not shown in the figure) corresponding to the first threaded hole, and the anti-loosening gasket 5 is provided with a third threaded hole (not shown in the figure) corresponding to the first threaded hole. The anti-loosening gasket 5 is fixed to the impeller 7 by screws 2 passing through the first threaded hole, the third threaded hole and the second threaded hole in sequence.

[0024] In the above embodiment, the screw 2 is used to pass through the guide sleeve 1 and the anti-loosening gasket 5 in sequence and be threadedly connected to the second threaded hole on the impeller 7, so that the anti-loosening gasket 5 can be connected between the guide sleeve 1 and the impeller 7 and fixed on the impeller 7. Since the anti-loosening gasket 5 is provided with a polygonal hole that matches the polygonal structure on the outer side of the locking nut 6, the anti-loosening gasket 5 can limit the rotational direction of the locking nut 6. That is, when the axial flow pump is stopped, the rotational direction of the locking nut 6 is limited by the anti-loosening gasket 5, so that the locking nut 6 can neither rotate forward nor rotate reverse, thereby realizing the locking of the axial flow pump impeller.

[0025] In some embodiments, multiple screws 2 are further included, and the guide sleeve 1 is provided with a first threaded hole in an annular shape corresponding to the screw 2 one by one, the impeller 7 is provided with a second threaded hole corresponding to the first threaded hole one by one, and the anti-loosening gasket 5 is provided with an annular groove 51 corresponding to the first threaded hole. The anti-loosening gasket 5 is fixed to the impeller 7 by the screw 2 passing through the first threaded hole, the annular groove 51 and the second threaded hole in sequence.

[0026] In the above embodiment, the screw 2 is sequentially passed through the guide sleeve 1 and the anti-loosening washer 5 and threadedly connected to the second threaded hole on the impeller 7, so that the anti-loosening washer 5 can be connected between the guide sleeve 1 and the impeller 7 and fixed to the impeller 7. In the above embodiment, two annular grooves 51 are symmetrically provided on the anti-loosening washer 5, and the position of the annular grooves 51 should match the position of the first threaded hole to allow the screw 2 to pass through. Since the anti-loosening washer 5 is provided with a polygonal hole that matches the polygonal structure on the outer side of the locking nut 6, the anti-loosening washer 5 can limit the rotational direction of the locking nut 6. That is, when the axial flow pump is stopped, the anti-loosening washer 5 limits the rotational direction of the locking nut 6, so that the locking nut 6 cannot rotate in either the forward or reverse direction, thereby achieving the locking of the axial flow pump impeller.

[0027] In some embodiments, the plurality of screws 2 are distributed in a circular array.

[0028] In the above embodiment, the plurality of screws 2 are arranged in a circular array, which can ensure that the guide sleeve 1 and the impeller 7 are subjected to uniform force in the circumferential direction, and provide a guarantee for the rotational limitation of the locking nut 6 by the anti-loosening washer 5.

[0029] In some embodiments, a spring washer 3 corresponding to each screw 2 is further included, and the spring washer 3 is disposed in the first threaded hole.

[0030] In the above embodiment, the spring washer 3 provided in the first threaded hole can reduce the wear between the screw 2 and the guide sleeve 1 .

[0031] In some embodiments, the outer side of the locking nut 6 is a regular hexagonal structure, and the anti-loosening washer 5 is provided with a regular hexagonal hole that matches the outer side of the locking nut 6 .

[0032] In the above embodiment, the outer side of the locking nut 6 is configured as a regular hexagonal structure. In other embodiments, the outer side of the locking nut 6 can also be configured as an equilateral triangle structure, a square structure, a regular pentagon structure, a regular heptagon structure, etc., and the regular polygonal hole provided on the locking washer 5 can be an equilateral triangle hole, a square hole, a regular pentagon hole, a regular heptagon hole, etc.

[0033] The above is a detailed introduction to the impeller locking device of a chemical axial flow pump provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A chemical axial flow pump impeller locking device, characterized in that: The invention comprises a guide sleeve (1), an anti-loosening washer (5), a locking nut (6), an impeller (7) and an impeller shaft (8); the locking nut (6) and one end of the impeller shaft (8) are threadedly connected to the internal shaft hole of the impeller (7) and fix the impeller (7) on the impeller shaft (8); the outer side of the locking nut (6) is in a polygonal structure; the anti-loosening washer (5) is provided with a polygonal hole corresponding to the shape of the outer side of the locking nut (6); the locking nut (6) is located in the polygonal hole of the anti-loosening washer (5); the guide sleeve (1) is fixed on the side of the locking nut (6) away from the impeller shaft (8) and fixes the anti-loosening washer (5) on the impeller (7).

2. The chemical axial flow pump impeller locking device according to claim 1, characterized in that: Both end faces of the anti-loosening gasket (5) are provided with O-shaped grooves, and each O-shaped groove is provided with an O-ring (4).

3. The chemical axial flow pump impeller locking device according to claim 1, characterized in that: The invention also includes a plurality of screws (2), a first threaded hole corresponding to the screws (2) is provided in an annular manner on the guide sleeve (1), a second threaded hole corresponding to the first threaded hole is provided on the impeller (7), a third threaded hole corresponding to the first threaded hole is provided on the anti-loosening gasket (5), and the anti-loosening gasket (5) is fixed to the impeller (7) by the screws (2) passing through the first threaded hole, the third threaded hole and the second threaded hole in sequence.

4. The chemical axial flow pump impeller locking device according to claim 1, characterized in that: The invention also includes a plurality of screws (2), the guide sleeve (1) is provided with a first threaded hole in an annular shape corresponding to the screws (2), the impeller (7) is provided with a second threaded hole in an annular shape corresponding to the first threaded hole, the anti-loosening gasket (5) is provided with an annular groove (51) corresponding to the first threaded hole, and the anti-loosening gasket (5) is fixed to the impeller (7) by the screws (2) passing through the first threaded hole, the annular groove (51) and the second threaded hole in sequence.

5. The chemical axial flow pump impeller locking device according to claim 3 or 4, characterized in that: A plurality of the screws (2) are distributed in a circular array.

6. The chemical axial flow pump impeller locking device according to claim 5, characterized in that: It also includes spring washers (3) corresponding one to one with the screws (2), and the spring washers (3) are arranged in the first threaded holes.

7. The chemical axial flow pump impeller locking device according to claim 6, characterized in that: The outer side of the locking nut (6) is a regular hexagonal structure, and the anti-loosening washer (5) is provided with a regular hexagonal hole matching the outer side of the locking nut (6).

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