Stable metal impeller pump capable of reducing radial runout

Abstract

The utility model discloses a stable metal impeller pump capable of reducing radial runout, and belongs to the technical field of impeller pumps. A stable type metal impeller pump capable of reducing radial run-out comprises a pump body, a rotating shaft is rotationally arranged in the pump body, an impeller body is arranged at the end, located in the pump body, of the rotating shaft, the outer wall of the rotating shaft is connected with the pump body in a sealed mode through a sealing ring, and the stable type metal impeller pump further comprises a double-bearing assembly used for supporting the rotating shaft, the double-bearing assemblies are located on the two sides of the impeller body correspondingly. The double-bearing assemblies are arranged in the pump body to support the rotating shaft, the double-bearing assemblies are located on the two sides of the impeller body respectively, the rotating shaft can be changed into a simply supported beam structure from a cantilever beam structure, the rigidity, stability and reliability of the rotating shaft can be remarkably improved, bending deformation of the rotating shaft is reduced, radial run-out is reduced, and the service life of the rotating shaft is prolonged. And the dynamic balance of the impeller body can be improved, radial runout and vibration are reduced, and the overall efficiency and performance of the pump are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to impeller pump technical field especially relates to a stable metal impeller pump of reducing radial runout. BACKGROUND

[0002] Impeller pump is a common centrifugal pump type, also called vertical volute type centrifugal pump, is widely used in industry, agriculture, building and municipal fields, it through rotating impeller converts mechanical energy into liquid's kinetic energy and pressure energy, thereby realizes the delivery of liquid, vertical volute type centrifugal pump generally belongs to the suspension structure, in the operation process radial force is big, can produce vibration, serious time can lead to impeller and pump body sealing ring bite dead phenomenon, especially large pump, radial force has been unable to overcome in the original structure.

[0003] Centrifugal pump radial force is one of centrifugal pump main performance parameters, for large vertical volute centrifugal pump, impeller shaft section because of radial force makes the slight eccentric rotation of impeller, promotes radial vibration, radial force in addition to causing vibration noise, more important is still can lead to pump shaft fatigue fracture, causes the security hidden danger. SUMMARY

[0004] The utility model discloses a stable metal impeller pump of reducing radial runout, which solves the problem of large radial force in the use of the shaft of the cantilever structure in the prior art, affecting the use effect.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A stable metal impeller pump of reducing radial runout, comprising a pump body, a rotating shaft is arranged in the pump body, an impeller body is arranged at one end of the rotating shaft in the pump body, and the outer wall of the rotating shaft is sealingly connected with the pump body through a sealing ring, a double-bearing assembly for supporting the rotating shaft is arranged in the pump body, and the double-bearing assembly is arranged on both sides of the impeller body.

[0007] In order to conveniently support the rotating shaft in the pump body, preferably, the double-bearing assembly comprises a first bearing seat and a second bearing seat, a water inlet is formed in one side of the pump body, the first bearing seat is fixedly arranged in the water inlet through a supporting rod, a first bearing hole is formed in the first bearing seat, one end of the rotating shaft extending into the first bearing hole in the pump body, a first bearing bush is arranged in the first bearing hole, and the inner wall of the first bearing bush is matched with the outer wall of the rotating shaft.

[0008] In order to support the rotating shaft at the end of the pump body, further, the other side of the pump body is provided with a mounting hole, the second bearing seat is fixedly arranged in the mounting hole through the rear end cover, and the second bearing seat is provided with a second bearing hole, the rotating shaft passes through the second bearing hole, and the second bearing hole is provided with a second bearing bush, and the inner wall of the second bearing bush is matched with the outer wall of the rotating shaft.

[0009] In order to conveniently replace the first bearing bush, further, the outer wall of one end of the first bearing seat is threadedly connected with a front end cover, and the outer wall of the water inlet end of the water inlet is fixedly provided with a water inlet cover through bolts.

[0010] Further, the inner wall of the first bearing bush is provided with a first oil groove, and the first bearing seat is provided with a first oil hole, and the two ends of the first oil hole are respectively communicated with the first oil groove and the water inlet.

[0011] Further, the inner wall of the second bearing bush is provided with a second oil groove, the pump body is provided with a second oil hole, the pump body is provided with a water outlet, and the two ends of the second oil hole are respectively communicated with the second oil groove and the water outlet.

[0012] Compared with the prior art, the utility model provides a stable metal impeller pump of reducing radial runout has the following beneficial effects:

[0013] 1、 the stable metal impeller pump of reducing radial runout, through setting up double bearing assembly in the pump body and supporting the rotating shaft, and double bearing assembly is located at both sides of impeller body respectively, can make rotating shaft change from cantilever beam structure into simply supported beam structure, can significantly improve the rigidity, stability and reliability of rotating shaft, reduce the bending deformation of rotating shaft, reduce radial runout, also can improve the dynamic balance of impeller body, reduce radial runout and vibration, improve the overall efficiency and performance of pump;

[0014] 2、 the stable metal impeller pump of reducing radial runout, through setting up first oil groove and second oil groove in first bearing bush and second bearing bush respectively, can increase the lubricating effect between rotating shaft, reduce friction, improve stability.

[0015] The part not involved in the device is same as the prior art or can be realized by the prior art, the utility model sets up double bearing assembly in the pump body and supports the rotating shaft, and double bearing assembly is located at both sides of impeller body respectively, can make rotating shaft change from cantilever beam structure into simply supported beam structure, can significantly improve the rigidity, stability and reliability of rotating shaft, reduce the bending deformation of rotating shaft, reduce radial runout, also can improve the dynamic balance of impeller body, reduce radial runout and vibration, improve the overall efficiency and performance of pump. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1The utility model provides a kind of structural schematic diagram of stable metal impeller pump of reducing radial run-out.

[0017] Figure 2 The utility model provides a kind of sectional view of stable metal impeller pump of reducing radial run-out.

[0018] Figure 3 The utility model provides a kind of stable metal impeller pump of reducing radial run-out Figure 2 The enlarged view of part A in the middle;

[0019] Figure 4 The utility model provides a kind of stable metal impeller pump of reducing radial run-out Figure 2 The enlarged view of part B in the middle.

[0020] In the drawing: 1, pump body;101, impeller body;102, water inlet;103, water outlet;104, support rod;105, sealing ring;106, rear end cover;2, rotating shaft;3, first bearing seat;301, front end cover;302, first bearing hole;303, first bearing bush;304, first oil hole;4, second bearing seat;401, second bearing hole;402, second bearing bush;403, second oil groove;404, second oil hole;5, water inlet cover. Specific embodiments

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] In the description of the utility model, it should be understood that the orientation or position relationship indicated by terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0023] Embodiment:

[0024] Refer to Figures 1-4The utility model provides a kind of stable metal impeller pump of reducing radial runout, including pump body 1, rotatingly arranged with rotating shaft 2 in pump body 1, impeller body 101 is arranged at one end of rotating shaft 2 in pump body 1, that is, impeller body 101 is fixedly arranged on the section of rotating shaft 2 in pump body 1, and the outer wall of rotating shaft 2 is sealedly connected with pump body 1 by sealing ring 105, sealing ring 105 is arranged at the place where rotating shaft 2 penetrates pump body 1, further including double-bearing assembly for supporting rotating shaft 2, which is arranged in pump body 1, and double-bearing assembly is located at both sides of impeller body 101 respectively, in use, rotating shaft 2 is supported by being arranged with double-bearing assembly in pump body 1, and double-bearing assembly is located at both sides of impeller body 101 respectively, so that rotating shaft 2 can be changed from cantilever beam structure to simply supported beam structure, the stiffness, stability and reliability of rotating shaft 2 can be significantly improved, the bending deformation of rotating shaft 2 is reduced, the radial runout is reduced, the dynamic balance of impeller body 101 can be improved, the radial runout and vibration are reduced, and the overall efficiency and performance of the pump are improved.

[0025] Referring to Figures 2-4 Here, double-bearing assembly is composed of first bearing seat 3 and second bearing seat 4, and here, first bearing seat 3 and second bearing seat 4 are preferably sliding bearings, water inlet 102 is formed on one side of pump body 1, first bearing seat 3 is fixedly arranged in water inlet 102 by support rod 104, support rod 104 is uniformly provided with a plurality of rods, preferably three rods here, first bearing hole 302 is formed in first bearing seat 3, one end of rotating shaft 2 extending into first bearing hole 302, first bearing bush 303 is arranged in first bearing hole 302, first bearing bush 303 is arranged in first bearing hole 302 by connecting key, and the outer wall of first bearing bush 303 abuts against the inner wall of front end cover 301, to fix first bearing bush 303 in first bearing hole 302, and the inner wall of first bearing bush 303 cooperates with the outer wall of rotating shaft 2, in use, first bearing seat 3 is arranged at water inlet 102 of pump body 1, to preferably support one end of rotating shaft 2 extending into pump body 1, to improve the stability during pump operation.

[0026] Referring to Figures 2-4On the other side of the pump body 1, a mounting hole is formed, the second bearing seat 4 is fixedly arranged in the mounting hole through the rear end cover 106, here, the second bearing seat 4 is fixed on the rear end cover 106 through bolts, then the second bearing seat 4 is inserted into the mounting hole, and then the rear end cover 106 is fixed on the pump body 1 through bolts, so that the second bearing seat 4 is fixed, and a second bearing hole 401 is formed in the second bearing seat 4, the rotating shaft 2 penetrates out of the second bearing hole 401, a second bearing bush 402 is arranged in the second bearing hole 401, the second bearing bush 402 is also fixed in the second bearing hole 401 through a connecting key, and the outer wall of the second bearing bush 402 abuts against the inner wall of the rear end cover 106, and the inner wall of the second bearing bush 402 is matched with the outer wall of the rotating shaft 2.

[0027] Referring to Figures 1-3 The front end cover 301 is threadedly connected to the outer wall of the first bearing seat 3 at the water inlet end, and the water inlet cover 5 is fixedly arranged on the outer wall of the water inlet end of the water inlet 102 through bolts, in use, the water inlet cover 5 is fixedly arranged on the water inlet 102 through bolts, so that the water inlet cover 5 is conveniently connected with a water inlet pipe, and the use effect is improved.

[0028] Referring to Figure 3 The first oil groove is formed in the inner wall of the first bearing bush 303, the first oil hole 304 is formed in the first bearing seat 3, and the two ends of the first oil hole 304 are respectively communicated with the first oil groove and the water inlet 102, in use, the first oil groove and the first oil hole 304 are formed, so that the rotating shaft 2 and the first bearing bush 303 are lubricated, the first bearing seat 3 is located in the pump body 1, and the heat of the first bearing seat 3 is conveniently taken away when the liquid is conveyed, so that the first bearing seat 3 reliably works.

[0029] Referring to Figure 2 And Figure 4 The second oil groove 403 is formed in the inner wall of the second bearing bush 402, the second oil hole 404 is formed in the pump body 1, the water outlet 103 is formed in the pump body 1, and the two ends of the second oil hole 404 are respectively communicated with the second oil groove 403 and the water outlet 103, in use, the second oil groove 403 is formed in the inner wall of the second bearing bush 402, so that a small part of the liquid enters the second oil groove 403 through the second oil hole 404 when the liquid is conveyed, the rotating shaft 2 and the second bearing bush 402 are lubricated, and the adjusting rod is threadedly connected to the pump body 1, one end of the adjusting rod extends to the second oil hole 404, the axis of the adjusting rod is perpendicular to the axis of the second oil hole 404 in the current position, and the diameter of the adjusting rod is greater than the diameter of the second oil hole 404, so that the opening and closing of the second oil hole 404 can be adjusted, and the use effect is improved.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A stable metal impeller pump with reduced radial runout, comprising a pump body (1), a rotating shaft (2) is arranged in the pump body (1), an impeller body (101) is arranged at one end of the rotating shaft (2) in the pump body (1), and the outer wall of the rotating shaft (2) is sealingly connected with the pump body (1) through a sealing ring (105), characterized in that, Also include a double bearing assembly for supporting the rotating shaft (2), arranged in the pump body (1), the double bearing assembly is located on both sides of the impeller body (101) respectively.

2. A stable metal impeller pump with reduced radial runout according to claim 1, characterized in that, The double bearing assembly includes a first bearing seat (3) and a second bearing seat (4), the pump body (1) side is provided with a water inlet (102), the first bearing seat (3) is fixedly arranged in the water inlet (102) through the support rod (104), and the first bearing seat (3) is provided with a first bearing hole (302), one end of the rotating shaft (2) in the pump body (1) extends into the first bearing hole (302), and the first bearing hole (302) is provided with a first bearing bush (303), and the inner wall of the first bearing bush (303) is matched with the outer wall of the rotating shaft (2).

3. A stable metal impeller pump with reduced radial runout according to claim 2, characterized in that, The other side of the pump body (1) is provided with a mounting hole, and the second bearing seat (4) is fixedly arranged in the mounting hole through the rear end cover (106), and the second bearing seat (4) is provided with a second bearing hole (401), and the rotating shaft (2) is arranged in the second bearing hole (401). The second bearing hole (401) is provided with a second bearing bush (402), and the inner wall of the second bearing bush (402) is matched with the outer wall of the rotating shaft (2).

4. A stable metal impeller pump with reduced radial runout according to claim 3, characterized in that, The outer wall of one end of the first bearing seat (3) is threadedly connected with the front end cover (301), and the outer wall of the water inlet (102) is fixedly provided with a water inlet cover (5) through bolts.

5. A stable metal impeller pump with reduced radial runout according to claim 4, characterized in that, The inner wall of the first bearing bush (303) is provided with a first oil groove, and the first bearing seat (3) is provided with a first oil hole (304), and the two ends of the first oil hole (304) are respectively connected with the first oil groove and the water inlet (102).

6. A stable metal impeller pump with reduced radial runout according to claim 5, characterized in that, The inner wall of the second bearing bush (402) is provided with a second oil groove (403), the pump body (1) is provided with a second oil hole (404), the pump body (1) is provided with a water outlet (103), and the two ends of the second oil hole (404) are respectively connected with the second oil groove (403) and the water outlet (103).

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