CN220337067U

CN220337067U - Gear pump

Info

Publication number: CN220337067U
Application number: CN202322169583.8U
Authority: CN
Inventors: 崔海峰; 黎敏; 张�成
Original assignee: Globe Environmental Shanghai Co ltd
Current assignee: Globe Environmental Shanghai Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-01-12
Anticipated expiration: 2033-08-11

Abstract

The utility model discloses a gear pump, and relates to the technical field of pumps; the gear pump comprises a closed cavity, wherein one end of the closed cavity is used for being connected with a fixed end of a motor in a sealing way, and the other end of the closed cavity is used for being connected with a pump cover of a gear pump main body in a sealing way; the extension shaft is arranged in the closed cavity, one end of the extension shaft is in transmission connection with the output shaft of the motor, and the other end of the extension shaft is in transmission connection with the driving shaft of the gear pump main body; and one end of the conveying pipe is connected with the discharge port of the gear pump main body. According to the gear pump provided by the utility model, the distance between the motor and the gear pump main body is prolonged through the extension shaft arranged in the closed cavity, so that the gear pump cannot wet the motor after being deeply immersed into liquid, and the safety performance is good.

Description

Gear pump

Technical Field

The utility model relates to the technical field of pumps, in particular to a gear pump.

Background

Gear pumps are rotary pumps that rely on the change and movement of working volume created between a pump cylinder and an intermeshing gear to deliver or pressurize a liquid. When the gears rotate, the volume of the space at the disengaging side of the gears is changed from small to large, vacuum is formed, liquid is sucked in, the volume of the space at the engaging side of the gears is changed from large to small, and the liquid is extruded into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of the two gears; the gear pump is driven by an independent motor, and when the gear pump works, the driving wheel rotates along with the motor and drives the driven wheel to rotate. In order to reduce the volume of the whole equipment, the motor of the existing gear pump is generally arranged on one side of the gear pump, and the gear pump comprises a driving gear, a driven gear, a pump body, a pump cover, a safety valve and the like. The sealed space formed by the pump body, the pump cover and the gear is the working chamber of the gear pump. The wheel shafts of the two gears are respectively arranged in bearing holes on the two pump covers, the driving gear shaft extends out of the pump body and is driven to rotate by the motor, however, the structure enables the gear pump to work only outside or on the surface of the liquid to be conveyed, the gear pump cannot be deeply immersed into the liquid to be conveyed, and otherwise, the motor is damaged due to the immersion of the liquid.

Disclosure of Invention

The gear pump solves the problems in the prior art, and the distance between the motor and the gear pump main body is prolonged through the extension shaft arranged in the closed cavity, so that the gear pump cannot wet the motor after being deeply immersed in liquid, and the safety performance is good.

In order to achieve the above object, the present utility model provides the following solutions:

the utility model provides a gear pump, which comprises a closed cavity, wherein one end of the closed cavity is used for being in sealing connection with a fixed end of a motor, and the other end of the closed cavity is used for being in sealing connection with a pump cover of a gear pump main body; the extension shaft is arranged in the closed cavity, one end of the extension shaft is in transmission connection with the output shaft of the motor, and the other end of the extension shaft is in transmission connection with the driving shaft of the gear pump main body; and one end of the conveying pipe is connected with the discharge port of the gear pump main body.

Optionally, the closed cavity is the sleeve of both ends open-ended, sleeve one end is used for with motor stiff end sealing connection, the sleeve other end is used for with the pump cover sealing connection of gear pump main part, the extension axle set up in the sleeve.

Optionally, the motor is fixedly arranged on a motor mounting plate, and an output shaft of the motor movably penetrates through the motor mounting plate and then is connected with one end of the extension shaft; one end of the sleeve is fixedly connected with one side, far away from the motor, of the motor mounting plate.

Optionally, the pump cover of gear pump main part is last to be fixedly equipped with flange lid, the flange lid passes through bolt fixedly connected with ring flange, the sleeve keep away from the one end of motor with ring flange fixed connection.

Optionally, two flanges are fixedly arranged on the inner wall of the sleeve, bearings are fixedly arranged on the flanges through bolts, and two ends of the extension shaft penetrate through the two bearings.

Optionally, the bearing is a boss circular seat bearing.

Optionally, one end of the extension shaft is in transmission connection with an output shaft of the motor through a coupler.

Optionally, the coupling is a quincuncial elastic coupling.

Compared with the prior art, the utility model has the following technical effects:

the motor is fixedly and hermetically connected with the gear pump main body by adopting the closed cavity, so that a longer sealed cavity is formed, and the motor is in transmission connection with the gear pump main body by the extension shaft arranged in the cavity, so that the gear pump main body can be deeply immersed in liquid when in operation, the motor is still positioned outside the liquid at the moment, the normal operation of the motor can be ensured, the gear pump main body can be deeply immersed in the liquid to be conveyed, the range of a workable scene is wider, and the efficiency is higher.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a gear pump of the present utility model;

FIG. 2 is a side view of the gear pump of the present utility model;

FIG. 3 is a top view of the gear pump of the present utility model;

reference numerals illustrate: 1-sleeve, 2-motor, 3-gear pump main part, 4-extension axle, 5-conveyer pipe, 6-motor mounting panel, 7-shaft coupling, 8-flange lid, 9-bolt, 10-ring flange, 11-bearing, 12-flange.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

The utility model provides a gear pump, which is shown by referring to figures 1, 2 and 3, and comprises a sleeve 1, wherein one end of the sleeve 1 is in sealing connection with a fixed end of a motor 2, and the other end of the sleeve 1 is in sealing connection with a pump cover of a gear pump main body 3, so that a longer closed cavity is formed; an extension shaft 4 is arranged in the sleeve 1, one end of the extension shaft 4 is in transmission connection with an output shaft of the motor 2, and the other end of the extension shaft is in transmission connection with a driving shaft of the gear pump main body 3; the discharge gate of gear pump main part 3 is connected with conveyer pipe 5, and conveyer pipe 5 length is great, and its other end can stretch out to be used for storing in the storage device of liquid.

In order to facilitate the installation and the connection of the sleeve 1, the motor 2 is fixedly arranged on the motor mounting plate 6, a through hole is arranged on the motor mounting plate 6, an output shaft of the motor 2 movably passes through the through hole of the motor mounting plate 6 and is in transmission connection with one end of the extension shaft 4 through a coupler 7, the coupler 7 adopts a plum blossom elastic coupler, one end of the sleeve 1 is fixedly connected with one side of the motor mounting plate 6 far away from the motor 2, the sleeve 1 can be in a connection mode such as welding or riveting, the through hole and the sleeve 1 are coaxially arranged, and the inner diameter size of the through hole is smaller than that of the sleeve 1; the pump cover of the gear pump main body 3 is fixedly provided with a flange cover 8, the flange cover 8 is fixedly connected with a flange plate 10 through a bolt 9, a sealing gasket is arranged at the joint, one end of the sleeve 1, which is far away from the motor 2, is fixedly connected with the flange plate 10, and a sealing ring is arranged at the joint. Further, in order to make the operation of the extension shaft 4 smoother and avoid deflection and shake, the utility model is provided with the bearings 11, specifically, two bearings 11 are respectively mounted on two flanges 12 on the inner wall of the sleeve 1, and two ends of the extension shaft 4 are arranged on the two bearings 11 in a penetrating way, so that the extension shaft 4 is more stable, and the bearings 11 are preferably boss circular seat bearings.

According to the utility model, the motor 2 is fixedly and hermetically connected with the gear pump main body 3 by the sleeve 1, so that a longer sealed cavity is formed, and the motor 2 is in transmission connection with the gear pump main body 3 by the extension shaft 4 arranged in the cavity, so that the gear pump main body 3 can be deeply immersed in liquid when in operation, and the motor 2 is still positioned outside the liquid at the moment, so that the normal operation of the motor 2 can be ensured, and the gear pump main body 3 can be deeply immersed in the liquid to be conveyed, so that the range of working scenes is wider and the efficiency is higher.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims

1. A gear pump, characterized in that: the gear pump comprises a closed cavity, wherein one end of the closed cavity is used for being connected with a fixed end of a motor in a sealing way, and the other end of the closed cavity is used for being connected with a pump cover of a gear pump main body in a sealing way;

the extension shaft is arranged in the closed cavity, one end of the extension shaft is in transmission connection with the output shaft of the motor, and the other end of the extension shaft is in transmission connection with the driving shaft of the gear pump main body;

and one end of the conveying pipe is connected with the discharge port of the gear pump main body.

2. The gear pump of claim 1, wherein: the closed cavity is a sleeve with two open ends, one end of the sleeve is used for being connected with the fixed end of the motor in a sealing mode, the other end of the sleeve is used for being connected with a pump cover of the gear pump main body in a sealing mode, and the extension shaft is arranged in the sleeve.

3. The gear pump of claim 2, wherein: the motor is fixedly arranged on the motor mounting plate, and an output shaft of the motor movably penetrates through the motor mounting plate and is connected with one end of the extension shaft; one end of the sleeve is fixedly connected with one side, far away from the motor, of the motor mounting plate.

4. The gear pump of claim 2, wherein: the pump cover of the gear pump main body is fixedly provided with a flange cover, the flange cover is fixedly connected with a flange plate through bolts, and one end, away from the motor, of the sleeve is fixedly connected with the flange plate.

5. The gear pump of claim 2, wherein: the sleeve is characterized in that two flanges are fixedly arranged on the inner wall of the sleeve, bearings are fixedly arranged on the flanges through bolts, and two ends of the extension shaft penetrate through the two bearings.

6. The gear pump of claim 5, wherein: the bearing is a boss circular seat bearing.

7. The gear pump of claim 1, wherein: one end of the extension shaft is in transmission connection with an output shaft of the motor through a coupler.

8. The gear pump of claim 7, wherein: the coupling is a plum blossom elastic coupling.