CN212055240U - Novel centrifugal pump with semi-closed bearing - Google Patents

Abstract

The utility model discloses a novel take centrifugal pump of semi-closed bearing, including impeller, pump shaft and the pump body, intermediate strut and the bearing box that connect gradually backward in the past, the bearing box includes that box and two can dismantle to be fixed the preceding terminal surface of box and the end cover of rear end face, the pump shaft rotates to be installed two on the end cover, the front end inner wall and the rear end inner wall of box with install semi-closed bearing between the pump shaft respectively, just semi-closed bearing's blind end inwards, the open end orientation is corresponding the end cover, two all open on the end cover and access to oil filler point in the box, install grease gun nozzle in the oil filler point. The utility model discloses use bearing lubricating grease inefficacy back, need not stop the pump and dismantle the pump body and change the bearing, only need inject lubricating grease into the grease gun mouth, in the lubricating grease that gets into the box from the grease gun mouth will enter into semi-closed bearing, realize supplementing the purpose of adding lubricating grease to semi-closed bearing.

Description

Novel centrifugal pump with semi-closed bearing

Technical Field

The utility model relates to a centrifugal pump field, specifically speaking relate to a novel take semi-closed bearing's centrifugal pump.

Background

The centrifugal pump has the advantages of large liquid conveying capacity, uniform and stable flow, convenient use, low manufacturing cost and extremely wide application. The types of materials used in the manufacture of centrifugal pumps include cast iron, stainless steel, ceramics, various plastics, and the like. For conveying acid, alkali and salt media with strong corrosiveness, the parts mainly contacting with the fluid can adopt fluoroplastic or fluoroplastic alloy.

At present, a totally-enclosed grease lubrication rolling bearing is adopted between a bearing box and a bearing of the centrifugal pump, and when bearing lubricating grease fails, a pump is stopped, a pump body is disassembled, the bearing is replaced, time and waste are wasted, and labor intensity is high.

SUMMERY OF THE UTILITY MODEL

For overcoming the inconvenient technical defect of bearing replacement after grease lubrication bearing's the grease inefficacy of current centrifugal pump, the utility model provides a novel take semi-closed bearing's centrifugal pump.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a novel take semi-closed bearing's centrifugal pump, includes impeller, pump shaft and the pump body, intermediate strut and the bearing box that connect gradually backward in the past, the impeller sets up in the pump body, the pump shaft rotates to be installed on the bearing box, just the front end of pump shaft passes penetrate behind the intermediate strut in the pump body with the impeller is connected, the bearing box includes that box and two can dismantle to be fixed the end cover of the preceding terminal surface and the rear end face of box, the pump shaft rotates to be installed two on the end cover, the front end inner wall and the rear end inner wall of box with install semi-closed bearing between the pump shaft respectively, just semi-closed bearing's blind end is inwards, and the open end orientation is corresponding the end cover, two all open on the end cover and access to oil filler point in the box, install the grease gun mouth in the oil filler point.

Furthermore, the end cover is provided with a yielding hole for the pump shaft to pass through, the inner surface of the end cover is provided with a circle of concave steps at the periphery of the yielding hole, and a framework oil seal is installed in the steps.

Furthermore, the end cover is also provided with a pressure relief hole.

Further, the semi-closed bearing is a semi-closed grease bearing.

Further, the grease gun nozzle is a 90-degree elbow grease gun nozzle.

Furthermore, a mechanical seal is arranged between the pump shaft and the rear end of the pump body, a mechanical seal cover is detachably fixed on the rear end face of the pump body, and the mechanical seal is clamped between the rear end face of the pump body and the mechanical seal cover.

Further, still include the motor, the rear end of pump shaft is fixed with the pump antithetical couplet ware, be fixed with the electricity antithetical couplet ware on the output shaft of motor, the pump antithetical couplet ware with electricity antithetical couplet ware interconnect, just the pump antithetical couplet ware with install the elastic block between the electricity antithetical couplet ware.

The beneficial effects of the utility model are embodied in:

the utility model discloses use bearing grease inefficacy back, need not stop the pump and dismantle the pump body and change the bearing, only need to pour into lubricating grease into the grease gun mouth into, because the open end of semi-closed bearing is towards corresponding end cover, consequently the lubricating grease that gets into the box from the grease gun mouth will enter into semi-closed bearing, realize supplementing the purpose of adding lubricating grease to semi-closed bearing, thereby greatly prolonged the life of bearing, and reduced cost of maintenance, reduced maintainer's working strength, improved the availability factor of pump; and the utility model discloses simple structure, the novelty, process optimization, convenient operation, labour saving and time saving can effectively reduce the maintenance frequency of pump.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the end cap of fig. 1.

The components in the drawings are labeled as follows: 1 impeller, 2 pump shafts, 3 pump bodies, 4 intermediate supports, 5 box bodies, 6 end covers, 601 oil injection holes, 602 pressure relief holes, 603 steps, 7 motors, 8 semi-closed bearings, 9 grease gun nozzles, 10 framework oil seals, 11 machine seals, 12 machine seal gland covers, 13 pump coupling devices, 14 elastic blocks, 15 electric coupling devices and 16 bottom plates.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

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. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, "a plurality" means two or more. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

See fig. 1 and 2.

The utility model discloses a novel centrifugal pump with semi-closed bearing, including impeller 1, pump shaft 2 and from the pump body 3, intermediate support 4 and the bearing box that connect gradually backward, impeller 1 sets up in the pump body 3, pump shaft 2 rotates and installs on the bearing box, and the front end of pump shaft 2 passes and penetrates behind the intermediate support 4 in the pump body 3 with impeller 1 is connected, the bearing box includes box 5 and two end covers 6 that can dismantle the front end face and the rear end face of fixing at the box 5, pump shaft 2 rotates and installs on two end covers 6, install semi-closed bearing 8 between the front end inner wall and the rear end inner wall of box 5 and pump shaft 2 respectively, and the closed end of semi-closed bearing 8 faces inwards, the open end is towards corresponding end cover 6, two all open on end cover 6 have access to oil hole 601 in box 5, and a grease gun nozzle 9 is arranged in the grease hole 601.

The utility model discloses use to bearing lubricating grease inefficacy back, need not stop the pump and dismantle the pump body and change the bearing, only need inject lubricating grease into the grease gun mouth, because the open end of semi-closed bearing is towards corresponding end cover, consequently follow the grease gun mouth and get into the lubricating grease in the box and will enter into semi-closed bearing, realize the purpose of adding lubricating grease to semi-closed bearing replenishment.

In an embodiment, the end cover 6 is provided with a yielding hole for the pump shaft 2 to pass through, the inner surface of the end cover 6 is provided with a circle of concave steps 603 on the periphery of the yielding hole, and the step 603 is internally provided with the framework oil seal 10. By the design, the end cover and the pump shaft can be sealed through the framework oil seal.

In one embodiment, the end cap 6 further has a pressure relief hole 602. By means of the design, when too much grease is injected, the grease can be discharged out of the box body through the pressure relief hole.

In one embodiment, the grease gun nozzle 9 is a 90 ° elbow grease gun nozzle. Design like this, make things convenient for the connecting tube way, rational utilization installation space.

In an embodiment, a mechanical seal 11 is installed between the pump shaft 2 and the rear end of the pump body 3, a mechanical seal cover 12 is detachably fixed to the rear end surface of the pump body 3, and the mechanical seal 11 is clamped between the rear end surface of the pump body 3 and the mechanical seal cover 12. By the design, the pump body and the pump shaft can be sealed through the mechanical seal, and the mechanical seal is clamped and installed through the mechanical seal pressing cover, so that the pump is convenient to disassemble and assemble.

In one embodiment, the pump further comprises a motor 7, a pump coupler 13 is fixed to the rear end of the pump shaft 2, an electric coupler 15 is fixed to an output shaft of the motor 7, the pump coupler 13 and the electric coupler 15 are connected with each other, and an elastic block 14 is installed between the pump coupler 13 and the electric coupler 15. By the design, the elastic block plays a role in buffering, and the device is more stable.

In one embodiment, the semi-enclosed bearing 8 is a semi-enclosed grease bearing.

It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the present invention, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application.

Claims (7)

1. The utility model provides a novel take centrifugal pump of semi-closed bearing, includes impeller, pump shaft and the pump body, intermediate strut and the bearing box that connect gradually backward in the past, the impeller sets up in the pump body, the pump shaft rotates to be installed on the bearing box, just the front end of pump shaft passes penetrate behind the intermediate strut in the pump body with its characterized in that is connected to the impeller: the bearing box includes that box and two can dismantle to be fixed the preceding terminal surface of box and the end cover of rear end face, the pump shaft rotates to be installed two on the end cover, the front end inner wall and the rear end inner wall of box with install semi-closed bearing between the pump shaft respectively, just semi-closed bearing's blind end is corresponding inwards, the open end orientation the end cover, two all open on the end cover and access to oil filler point in the box, install grease gun mouth in the oil filler point.

2. The new centrifugal pump with semi-enclosed bearing of claim 1, characterized in that: the pump shaft end cover is characterized in that a yielding hole for the pump shaft to penetrate is formed in the end cover, a circle of inwards-concave steps are formed in the periphery of the yielding hole on the inner surface of the end cover, and a framework oil seal is installed in the steps.

3. A new centrifugal pump with semi-enclosed bearing according to claim 1 or 2, characterized in that: the end cover is also provided with a pressure relief hole.

4. A new centrifugal pump with semi-enclosed bearing according to claim 1 or 2, characterized in that: the semi-closed bearing is a semi-closed grease bearing.

5. A new centrifugal pump with semi-enclosed bearing according to claim 1 or 2, characterized in that: the grease gun nozzle is a 90-degree elbow grease gun nozzle.

6. A new centrifugal pump with semi-enclosed bearing according to claim 1 or 2, characterized in that: a mechanical seal is installed between the pump shaft and the rear end of the pump body, a mechanical seal cover is detachably fixed on the rear end face of the pump body, and the mechanical seal is clamped between the rear end face of the pump body and the mechanical seal cover.

7. A new centrifugal pump with semi-enclosed bearing according to claim 1 or 2, characterized in that: still include the motor, the rear end of pump shaft is fixed with the pump antithetical couplet ware, be fixed with the electricity antithetical couplet ware on the output shaft of motor, the pump antithetical couplet ware with electricity antithetical couplet ware interconnect, just the pump antithetical couplet ware with install the elastic block between the electricity antithetical couplet ware.

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