CN217029331U

CN217029331U - Oil-free self-lubricating gram negative pump

Info

Publication number: CN217029331U
Application number: CN202220209977.4U
Authority: CN
Inventors: 庄旭铭
Original assignee: Zhejiang Jiuyi Electromechanical Co ltd
Current assignee: Zhejiang Jiuyi Electromechanical Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-07-22
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses an oil-free self-lubricating gram negative pump, which comprises a pump body, a motor arranged above the pump body and a connecting frame arranged between the pump body and the motor, wherein a transmission shaft with one end connected with an output shaft of the motor and the other end extending into the pump body is arranged in the connecting frame; the flexible coupling comprises a driving rotating seat connected with an output shaft of the motor and a driven rotating seat connected with the transmission shaft, wherein a plurality of transmission grooves distributed in an annular array mode around the axis of the driving rotating seat are formed in the driving rotating seat, a transmission column arranged on the driven rotating seat is inserted into each transmission groove, and an elastic rubber tube embedded in the transmission grooves is sleeved on each transmission column. The self-lubricating gram negative pump has the characteristics of long service life of the bearing, no oil leakage at the lubricating position, safety and stability in use, complete overall functions and strong practicability.

Description

Oil-free self-lubricating gram negative pump

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to an oil-free self-lubricating gram negative pump.

Background

The gram negative pump is a device which can normally discharge gas-liquid mixture in a negative pressure container, taking a papermaking process as an example, the gas-liquid mixture generated by a vacuum dehydration system is condensed into water drops through the negative pressure container such as a separation tank or a separation pool and sinks to the bottom of the negative pressure container, and the water drops are pumped away by the gram negative pump at the bottom of the negative pressure container. The gram negative pump of prior art, by belt pulley transmission between motor and the pump, the belt easily wears to wear and tear, changes frequently, and the frequency opens the service behavior that stops and leads to antifriction bearing life-span short, and lubricating oil leaks the leakage quantity greatly, and environmental pollution is serious, and whole effect is not good. Accordingly, the utility model provides an oil-free self-lubricating gram negative pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides the oil-free self-lubricating gram negative pump which has the characteristics of long service life of a bearing, no oil leakage at a lubricating position and safe and stable use.

In order to solve the technical problems, the utility model aims to realize that: the utility model relates to an oil-free self-lubricating gram negative pump which comprises a pump body, a motor arranged above the pump body and a connecting frame arranged between the pump body and the motor, wherein a transmission shaft with one end connected with an output shaft of the motor and the other end extending into the pump body is arranged in the connecting frame, an impeller in the pump body is arranged on the transmission shaft, a bearing embedded in the pump body is sleeved on the transmission shaft, the bearing is a self-lubricating bearing, and a flexible coupling is connected between the transmission shaft and an output shaft of the motor in series.

The utility model is further configured to: the flexible coupling comprises a driving rotating seat connected with an output shaft of the motor and a driven rotating seat connected with the transmission shaft, wherein the driving rotating seat is provided with a plurality of transmission grooves distributed in an annular array around the axis of the driving rotating seat, each transmission groove is internally inserted with a transmission column arranged on the driven rotating seat, and the transmission column is sleeved with an elastic rubber tube embedded in the transmission groove.

The utility model is further configured to: set up transversal personally submitting "ten" word form on the transmission post and make the deformation gap that extends along its axial, the gap mouth in deformation gap is established the transmission post is towards the one end of initiative roating seat, the transmission post has the deformation breach towards the one end central authorities of initiative roating seat, and the expansion body at the transmission tank bottom is established in the embedding in the deformation breach.

The utility model is further configured to: the outer wall surface of the transmission column is provided with an annular anti-breaking groove, and the anti-breaking groove is formed in one end, close to the driven rotating seat, of the transmission column.

The utility model is further configured to: a plurality of transmission grooves which are distributed in an annular array mode at equal intervals of angles around the axis of the driving rotary seat are formed in the driving rotary seat.

In conclusion, the utility model has the following beneficial effects: the oilless self-lubricating gram negative pump is novel in design and reasonable in concept, the power output end and the power input end are flexibly transmitted, rigid starting and stopping are avoided, the transmission shaft is small in instantaneous torque, the service life is prolonged, the pump is matched with a self-lubricating bearing for transmission, the rotation is stable and smooth, oil leakage at a lubricating position is avoided, the use is safe and stable, the overall function is complete, and the practicability is high.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion of the present invention;

fig. 3 is a partial structural schematic diagram of the present invention.

Detailed Description

For a better understanding of the technical solutions of the present invention, the following preferred embodiments of the present invention are described in conjunction with the specific examples, but it should be understood that the descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent claims of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model will be further described with reference to the accompanying drawings and preferred embodiments.

Example 1

Referring to fig. 1 to 3, the oil-free self-lubricating gram negative pump that this embodiment relates to, including the pump body 1, establish the motor 2 in the pump body 1 top, establish the link 3 between the pump body 1 and motor 2, be equipped with the transmission shaft 4 that the output shaft of motor 2, the other end stretched into the pump body 1 is connected to one end in the link 3, the impeller in the pump body 1 is established on transmission shaft 4, the cover has bearing (not shown in the figure) of inlaying in the pump body 1 on the transmission shaft 4, and the bearing is self-lubricating bearing, flexible coupling 5 has concatenated between the output shaft of transmission shaft 4 and motor 2.

Further, the flexible coupling 5 comprises a driving rotating base 51 connected with an output shaft of the motor 2 and a driven rotating base 52 connected with the transmission shaft 4, the driving rotating base 51 is provided with a plurality of transmission grooves 53 distributed in an annular array at equal intervals around an axis of the driving rotating base, a transmission column 54 arranged on the driven rotating base 52 is inserted into each transmission groove 53, and an elastic rubber tube 55 embedded in the transmission groove 53 is sleeved on each transmission column 54.

Furthermore, a deformation gap 56 which is cross-shaped in cross section and extends along the axial direction is formed on the transmission column 54, a gap opening of the deformation gap 56 is formed at one end of the transmission column 54 facing the driving rotating seat 51, a deformation notch 57 is formed in the center of one end of the transmission column 54 facing the driving rotating seat 51, and an expansion body 58 arranged at the bottom of the transmission groove 53 is embedded in the deformation notch 57.

In this embodiment, when the driving rotary seat 51 and the driven rotary seat 52 are kept connected and closed, the expansion body 58 is inserted into the deformation notch 57, and presses and expands the deformation notch 57, so that the distance between the deformation gaps 56 is increased, the diameter of the end of the driving column 54 close to the driving rotary seat 51 is increased, and the elastic rubber tube 55 is expanded, so that the elastic rubber tube 55 and the driving column 54 form an interference fit, and the elastic rubber tube 55 is also inserted into the driving groove 53, and the elastic rubber tube 55 is expanded, so that the elastic rubber tube 55 and the groove wall of the driving groove 53 are also in a tight fit connection state, so that although transmission is flexible transmission, no moving gap exists, and force transmission is more stable.

Example 2

Referring to fig. 1 to 3, in the oil-free self-lubricating negative gram pump according to the present embodiment, in addition to embodiment 1, an annular anti-breaking groove 59 is further formed in an outer wall surface of the transmission column 54, and the anti-breaking groove 59 is formed at an end of the transmission column 54 close to the driven rotary base 52.

In this embodiment, the anti-breaking groove 59 is added, so that the transmission column 54 is not easy to break during the expansion deformation process.

The oilless self-lubricating gram negative pump is novel in design and reasonable in concept, the power output end and the power input end are flexibly transmitted, rigid starting and stopping are avoided, the transmission shaft is small in instantaneous torque, the service life is prolonged, the pump is matched with a self-lubricating bearing for transmission, the rotation is stable and smooth, oil leakage at a lubricating position is avoided, the use is safe and stable, the overall function is complete, and the practicability is high.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship actually shown, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, it is possible for those skilled in the art to combine the embodiments and understand the specific meanings of the above terms according to specific situations.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the above teachings. Therefore, the technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection determined by the claims.

Claims

1. The utility model provides an oilless self-lubricating gram negative pump, includes the pump body, establishes the motor in pump body top, establishes the link between the pump body and motor, its characterized in that: be equipped with the transmission shaft that motor output shaft, other end stretched into the pump body are connected to one end in the link, impeller in the pump body is established on the transmission shaft, the cover has the bearing of inlaying in the pump body on the transmission shaft, and the bearing is self-lubricating bearing, the flexible shaft coupling has concatenated between the output shaft of transmission shaft and motor.

2. An oil-free self-lubricating negative gram pump as claimed in claim 1, wherein: the flexible coupling comprises a driving rotating seat and a driven rotating seat, wherein the driving rotating seat is connected with an output shaft of the motor, the driven rotating seat is connected with the transmission shaft, a plurality of transmission grooves are formed in the driving rotating seat and distributed in an annular array mode around the axis of the driving rotating seat, a transmission column arranged on the driven rotating seat is inserted into each transmission groove, and an elastic rubber pipe embedded in the transmission grooves is sleeved on the transmission columns.

3. An oil-free self-lubricating negative sump pump according to claim 2, wherein: set up the deformation gap that transversal personally submitting "ten" word form and make the extension along its axial on the transmission post, the gap mouth in deformation gap is established the transmission post is towards the one end of initiative roating seat, the transmission post has the deformation breach towards the one end central authorities of initiative roating seat, and the expansion body at the transmission tank bottom is established in the embedding in the deformation breach.

4. An oil-free self-lubricating negative sump pump according to claim 3, wherein: the outer wall surface of the transmission column is provided with an annular anti-breaking groove, and the anti-breaking groove is formed in one end, close to the driven rotating seat, of the transmission column.

5. An oil-free self-lubricating negative gram pump according to any of claims 2-4, characterized in that: the driving rotary seat is provided with a plurality of transmission grooves which are distributed around the axis of the driving rotary seat in an annular array at equal intervals.