CN210738900U - Pump shaft protecting sleeve of submerged centrifugal pump - Google Patents

Abstract

The utility model discloses a centrifugal pump shaft lag under liquid relates to centrifugal pump technical field, including the pump shaft, the lag has been cup jointed in the tip outside of pump shaft, the impeller has been cup jointed to the tip of pump shaft, the outside of lag contacts with the inner wall of impeller, first screw hole has all been seted up to the both sides of lag, the second screw hole has all been seted up to the both sides of pump shaft, the third screw hole has been seted up to the impeller symmetry, third screw hole female connection has first fastening screw, first screw hole and second screw hole all with first fastening screw looks adaptation. The utility model discloses a be provided with the lag between impeller and pump shaft, can prevent the wearing and tearing of pump shaft, because it is fixed through second fastening screw between apron and the pump shaft, again because it is fixed through first fastening screw between impeller and the pump shaft to make the lag can reach the change effect of being convenient for.

Description

Pump shaft protecting sleeve of submerged centrifugal pump

Technical Field

The utility model relates to a centrifugal pump technical field, in particular to centrifugal pump shaft lag under liquid.

Background

The centrifugal pump is used as the power for liquid transportation and is widely applied to the chemical industry, the metallurgy industry and the automobile industry. The coating production line is important equipment for shock absorber manufacturers in the automobile industry, and a submerged centrifugal pump is generally adopted for spraying of pretreatment degreasing, washing, surface conditioning and phosphating. The pump shaft of the centrifugal pump is an important component of the centrifugal pump, and the service life of the centrifugal pump is directly influenced, however, the pump shaft of the centrifugal pump in the prior art is still lack of a protective sleeve in the use process, so that the pump shaft is worn in the use process, and further the use of the centrifugal pump is influenced.

Therefore, it is necessary to develop a pump shaft protecting cover of a submerged centrifugal pump to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal pump shaft lag under liquid to the pump shaft of the centrifugal pump among the prior art who proposes in solving above-mentioned background art still lacks the lag in the use, leads to its condition that can appear wearing and tearing in the use, and then can influence the problem of the use of centrifugal pump.

In order to achieve the above object, the utility model provides a following technical scheme: a pump shaft protecting sleeve of an underwater centrifugal pump comprises a pump shaft, wherein the outer side of the end part of the pump shaft is sleeved with a protecting sleeve, the end part of the pump shaft is sleeved with an impeller, the outer side of the protecting sleeve is in contact with the inner wall of the impeller, first threaded holes are formed in two sides of the protecting sleeve, second threaded holes are formed in two sides of the pump shaft, third threaded holes are symmetrically formed in the impeller, first fastening screws are connected to the third threaded holes in an internal thread mode, and the first threaded holes and the second threaded holes are matched with the first fastening screws;

first thread grooves are formed in two sides of the end of the pump shaft, a cover plate is sleeved on the outer side of the end of the pump shaft, the cover plate is connected with the impeller through a sealing gasket in a laminating mode, second thread grooves are formed in two sides of one end, close to the impeller, of the cover plate, second fastening screws are connected to the inner threads of the second thread grooves, and the second fastening screws are matched with the second thread grooves.

Optionally, the position of the first threaded hole corresponds to the position of the second threaded hole, and the diameters of the first threaded hole and the second threaded hole are equal to the diameter of the third threaded hole.

Optionally, the diameter of the second thread groove is equal to the diameter of the first thread groove.

Optionally, the end of the pump shaft and the end of the cover plate are both arranged in an arc shape.

Optionally, the first fastening screw is in contact with the impeller through a sealing sheet.

The utility model discloses a technological effect and advantage:

the utility model discloses a be provided with the lag between impeller and pump shaft, can prevent the wearing and tearing of pump shaft, because it is fixed through second fastening screw between apron and the pump shaft, again because it is fixed through first fastening screw between impeller and the pump shaft to make the lag can reach the change effect of being convenient for.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

In the figure: 1. a pump shaft; 2. a protective sleeve; 3. an impeller; 4. a first fastening screw; 5. a cover plate; 6. a gasket; 7. a second fastening screw; 8. and (7) sealing the sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The utility model provides a submerged centrifugal pump shaft lag as shown in figure 1, including pump shaft 1, lag 2 has been cup jointed outside the tip of pump shaft 1, impeller 3 has been cup jointed to the tip of pump shaft 1, the outside of lag 2 contacts with the inner wall of impeller 3, first screw hole has all been seted up to the both sides of lag 2, second screw hole has all been seted up to the both sides of pump shaft 1, impeller 3 symmetry has seted up the third screw hole, third screw hole internal thread is connected with first fastening screw 4, contact through gasket 8 between first fastening screw 4 and the impeller 3, the position of first screw hole corresponds with the position of second screw hole, the diameter of first screw hole and second screw hole all equals the diameter of third screw hole, first screw hole and second screw hole all with first fastening screw 4 looks adaptations;

first thread grooves are formed in two sides of the end portion of a pump shaft 1, a cover plate 5 is sleeved on the outer side of the end portion of the pump shaft 1, the end portion of the pump shaft 1 and the end portion of the cover plate 5 are arranged in an arc shape, the cover plate 5 is connected with an impeller 3 in an attaching mode through a sealing gasket 6, second thread grooves are formed in two sides of one end, close to the impeller 3, of the cover plate 5, the diameter of each second thread groove is equal to that of the corresponding first thread groove, a second fastening screw 7 is connected to the inner thread of each second thread groove, the second fastening screw 7 is matched with the corresponding second thread groove, the protective sleeve 2 is sleeved on the pump shaft 1 firstly, at the moment, the positions of the second thread holes correspond to those of the first thread holes, the impeller 3 is sleeved on the protective sleeve 2, at the moment, the positions of the third thread holes correspond to those of the first thread holes and the second thread holes, and then the first fastening screw 4 is, The impeller 3 and the pump shaft 1 can be fixed by the first threaded hole and the second threaded hole until the first fastening screw 4 enters the second threaded hole, the cover plate 5 is sleeved at the end part of the pump shaft 1 through the sealing gasket 6, the cover plate 5 is in contact with the impeller 3, at the moment, the position of the first threaded groove corresponds to the position of the second threaded groove, then the second fastening screw 7 is rotated clockwise, the second fastening screw 7 sequentially passes through the second threaded groove and the first threaded groove until the second fastening screw 7 enters the first threaded groove, the cover plate 5 and the pump shaft 1 can be fixed, the cover plate 5 can support and fix the position of the impeller 3, the protecting sleeve 2 is arranged between the impeller 3 and the pump shaft 1, the pump shaft 1 can be prevented from being worn, when the protecting sleeve 2 is replaced, the second fastening screw 7 is rotated anticlockwise to take down the cover plate 5, the impeller 3 can be taken down by rotating the first fastening screw 4 counterclockwise, the protective sleeve 2 can be taken down from the pump shaft 1 and the protective sleeve 2 can be replaced, and the operation is simple.

This practical theory of operation: firstly, sleeving a protective sleeve 2 on a pump shaft 1, at the moment, enabling the position of a second threaded hole to correspond to the position of a first threaded hole, then sleeving an impeller 3 on the protective sleeve 2, at the moment, enabling the position of a third threaded hole to correspond to the positions of the first threaded hole and the second threaded hole, then enabling the first fastening screw 4 to sequentially pass through the third threaded hole, the first threaded hole and the second threaded hole by clockwise rotating the first fastening screw 4 until the first fastening screw 4 enters the second threaded hole, fixing the impeller 3 and the pump shaft 1, sleeving a cover plate 5 on the end part of the pump shaft 1 through a sealing gasket 6, enabling the cover plate 5 to be in contact with the impeller 3, at the moment, enabling the position of a first threaded groove to correspond to the position of a second threaded groove, then enabling the second fastening screw 7 to sequentially pass through the second threaded groove and the first threaded groove by clockwise rotating the second fastening screw 7, until second fastening screw 7 gets into the inside of first thread groove, can make apron 5 fixed with pump shaft 1, and apron 5 can play support and fixed action to impeller 3's position, through be provided with lag 2 between impeller 3 and pump shaft 1, can prevent the wearing and tearing of pump shaft 1, when changing lag 2, first anticlockwise rotation second fastening screw 7 can take off apron 5, first fastening screw 4 of anticlockwise rotation can take off impeller 3 again, can take off lag 2 from pump shaft 1 and change lag 2 this moment, the operation is very simple.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (5)

1. The utility model provides an under liquid centrifugal pump shaft lag, includes pump shaft (1), its characterized in that: the protecting sleeve (2) is sleeved on the outer side of the end part of the pump shaft (1), the impeller (3) is sleeved on the end part of the pump shaft (1), the outer side of the protecting sleeve (2) is in contact with the inner wall of the impeller (3), first threaded holes are formed in two sides of the protecting sleeve (2), second threaded holes are formed in two sides of the pump shaft (1), third threaded holes are symmetrically formed in the impeller (3), first fastening screws (4) are connected to the third threaded holes in an internal thread mode, and the first threaded holes and the second threaded holes are matched with the first fastening screws (4);

first thread groove has all been seted up to the tip both sides of pump shaft (1), apron (5) have been cup jointed in the tip outside of pump shaft (1), it is connected through sealed pad (6) laminating between apron (5) and impeller (3), the second thread groove has all been seted up to the one end both sides that apron (5) are close to impeller (3), the inside threaded connection of second thread groove has second fastening screw (7), second fastening screw (7) and second thread groove looks adaptation.

2. A submerged centrifugal pump shaft protective sheath according to claim 1, characterized in that:

the position of the first threaded hole corresponds to the position of the second threaded hole, and the diameters of the first threaded hole and the second threaded hole are equal to the diameter of the third threaded hole.

3. A submerged centrifugal pump shaft protective sheath according to claim 1, characterized in that:

the diameter of the second thread groove is equal to that of the first thread groove.

4. A submerged centrifugal pump shaft protective sheath according to claim 1, characterized in that:

the end part of the pump shaft (1) and the end part of the cover plate (5) are both arranged in an arc shape.

5. A submerged centrifugal pump shaft protective sheath according to claim 1, characterized in that:

the first fastening screw (4) is in contact with the impeller (3) through a sealing sheet (8).

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