CN211009126U - Defoaming pump - Google Patents

Abstract

The utility model belongs to the technical field of defoaming pumps, and particularly relates to a defoaming pump with good sealing performance, comprising a driving device and an impeller, wherein the output end of the driving device is provided with a connecting shaft. The defoaming pump also comprises a pump housing, a liquid sealing ceramic and a liquid sealing rubber member. The pump housing is fixedly arranged at one end of the driving device, and a defoaming cavity is formed therein. A liquid discharge port is arranged on the side wall of the pump housing, and a bubble suction port is arranged at the end thereof, and both the liquid discharge port and the bubble suction port are communicated with the defoaming cavity. The impeller is accommodated in the defoaming cavity. The connecting shaft extends into the defoaming cavity and is connected to the impeller drive. The connecting shaft rotatably penetrates the liquid sealing ceramic. The periphery of the liquid sealing ceramic is fixedly connected to the wall surface of the defoaming cavity. The liquid sealing rubber member is sleeved on the connecting shaft, and its periphery is fitted on the side of the liquid sealing ceramic facing the bubble suction port. The defoaming pump enhances the sealing performance by sleeve-fitting the liquid sealing rubber member on the connecting shaft, and its periphery is fitted on the side of the liquid sealing ceramic facing the bubble suction port.

Description

A defoaming pump

technical field

The utility model belongs to the technical field of defoaming pumps, in particular to a defoaming pump with good sealing performance.

Background technique

The defoaming pump is a special equipment for eliminating gas foam in working liquid, and is widely used in food, medicine, chemical and papermaking industries. When the traditional defoaming pump is working, the motor drives the impeller to rotate and disperse the air bubbles. Due to the poor sealing performance, the air bubbles easily enter the motor, resulting in damage to the motor and unstable pump performance.

Utility model content

The purpose of the utility model is to provide a defoaming pump, which aims to solve the technical problem that the air bubbles easily enter the motor when the defoaming pump in the prior art works.

In order to achieve the above purpose, a defoaming pump provided by the embodiment of the present utility model includes a driving device and an impeller, and the output end of the driving device is provided with a connecting shaft; the defoaming pump also includes:

The pump casing is fixed on one end of the drive device, and a defoaming cavity is formed inside; the side wall of the pump casing is provided with a liquid discharge port, and its end is provided with a bubble suction port, and the liquid The discharge port and the air bubble suction port are both communicated with the defoaming cavity; the impeller is accommodated in the defoaming cavity; the connecting shaft extends into the defoaming cavity and is drivingly connected with the impeller;

a liquid sealing ceramic sheet, the connecting shaft rotatably penetrates the liquid sealing ceramic sheet; the periphery of the liquid sealing ceramic sheet is fixedly connected with the wall surface of the defoaming cavity; and

The liquid sealing rubber piece is sleeved on the connecting shaft, and the peripheral edge of the liquid sealing rubber piece is attached to the side of the liquid sealing ceramic sheet facing the air bubble suction port.

Preferably, the liquid sealing rubber member is an umbrella-shaped annular rubber member, the inner peripheral edge of which is fixedly sleeved on the connecting shaft, and the outer peripheral edge extends upward and is attached to the liquid sealing ceramic sheet toward the On the side of the air bubble suction port.

Preferably, the pump casing includes a casing and a front cover; the casing is fixedly connected to the casing of the driving device; the front cover is sleeved on the casing through a thread, and the liquid discharge port is connected to the casing. The air bubble suction port is arranged on the front cover.

Preferably, the liquid discharge port and the impeller are arranged on the same horizontal plane.

Preferably, the air bubble suction port and the impeller are arranged coaxially.

Preferably, the driving device is a motor.

The above one or more technical solutions in the defoaming pump provided by the embodiment of the present invention have at least one of the following technical effects: when the defoaming pump is working, the driving device drives the impeller to rotate through the connecting shaft, and when the impeller rotates, the air bubbles are removed from the air bubbles. The suction port sucks into the defoaming cavity, and the impeller disperses the bubbles and throws them out from the liquid discharge port; the liquid-sealed ceramic sheet plays a sealing role, and there is a gap between the liquid-sealed ceramic sheet and the connecting shaft, and the liquid will infiltrate from the gap. The liquid sealing rubber piece is sleeved on the connecting shaft, and its periphery is attached to the side of the liquid sealing ceramic sheet facing the air bubble suction port, so as to achieve the purpose of sealing the gap and enhance the sealing performance; the defoaming pump has good sealing performance, When working, air bubbles do not enter the drive unit.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. For some novel embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a cross-sectional view of a defoaming pump provided by an embodiment of the present invention.

FIG. 2 is a front view of the defoaming pump provided by the embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the embodiments of the present invention, but should not be construed as a limitation of the present invention.

As shown in FIGS. 1-2 , an embodiment of the present invention provides a defoaming pump, which includes a driving device 1 and an impeller 2 , and a connecting shaft 11 is provided at the output end of the driving device 1 . The defoaming pump also includes a pump casing 3 , a liquid sealing ceramic sheet 4 and a liquid sealing rubber piece 5 .

The pump casing 3 is fixed on one end of the driving device 1 , and a defoaming cavity 31 is formed inside the pump casing 3 . The side wall of the pump casing 3 is provided with a liquid discharge port 331 , and its end is provided with a bubble suction port 332 . The impeller 2 is accommodated in the defoaming cavity 31 . The connecting shaft 11 extends into the defoaming cavity 31 and is drivingly connected to the impeller 2 .

The connecting shaft 11 rotatably penetrates the liquid sealing ceramic sheet 4 . The peripheral edge of the liquid-sealing ceramic sheet 4 is fixedly connected with the wall surface of the defoaming cavity 31 .

The liquid sealing rubber member 5 is sleeved on the connecting shaft 11 , and its peripheral edge is attached to the side of the liquid sealing ceramic sheet 4 facing the air bubble suction port 332 .

When the defoaming pump is working, the driving device 1 drives the impeller 2 to rotate through the connecting shaft 11. When the impeller 2 rotates, the air bubbles are sucked into the defoaming cavity 31 from the air bubble suction port 332, and the impeller 2 disperses the air bubbles and throws them out from the liquid discharge port 331. . The liquid sealing ceramic piece 4 plays a sealing role, and there is a gap between the liquid sealing ceramic piece 4 and the connecting shaft 11, and the liquid will infiltrate from the gap. It is attached to the side of the liquid-sealing ceramic sheet 4 facing the air bubble suction port 332 , so as to achieve the purpose of sealing the gap and enhance the sealing performance. Specifically, when the liquid sealing rubber member 5 rotates with the connecting shaft 11, although its peripheral edge rubs against the liquid sealing ceramic sheet 4, the liquid in the working environment plays a lubricating role, and the friction is not severe and will not wear quickly. The defoaming pump has good sealing performance, and bubbles will not enter the driving device 1 during operation.

In another embodiment of the present invention, as shown in FIG. 1 , the liquid sealing rubber member 5 of the defoaming pump is an umbrella-shaped annular rubber member, the inner periphery of which is fixedly sleeved on the connecting shaft 11 The outer peripheral edge extends upward and is attached to the side of the liquid-sealing ceramic sheet 4 facing the air bubble suction port 332 . Specifically, the inner peripheral edge of the liquid sealing rubber piece 5 plays a sealing role on the connecting shaft 11 , and the outer peripheral edge plays a sealing role in the gap where the connecting shaft 11 penetrates the liquid sealing ceramic piece 4 , and when the liquid sealing rubber piece 5 rotates It is deformed by centrifugal action, and its outer peripheral edge remains attached to the side surface of the liquid-sealing ceramic sheet 4 .

In another embodiment of the present invention, as shown in FIG. 1 , the pump casing 3 of the defoaming pump includes a casing 32 and a front cover 33 . The housing 32 is fixedly connected to the housing of the drive device 1 . The front cover 33 is sleeved on the housing 32 by threads, and the liquid discharge port 331 and the air bubble suction port 332 are provided on the front cover 33 . Specifically, the above arrangement is more convenient for disassembly and assembly of the defoaming pump.

In another embodiment of the present invention, as shown in FIG. 1 , the liquid discharge port 331 and the impeller 2 of the defoaming pump are arranged on the same horizontal plane. Specifically, the impeller 2 disperses the air bubbles, and the liquid is thrown out along the tangential direction of its rotation. The purpose of the above setting is to facilitate the discharge of the liquid from the liquid discharge port 331 .

In another embodiment of the present invention, as shown in FIG. 1 , the air bubble suction port 332 and the impeller 2 of the defoaming pump are arranged coaxially. Specifically, since the suction force generated at the axis of the impeller 2 is the largest when the impeller 2 rotates, the purpose of the above setting is to maximize the suction amount of the air bubble suction port 332 during operation.

In another embodiment of the present invention, as shown in FIG. 1 , the driving device 1 of the defoaming pump is a motor. The motor has the advantages of stable operation, less noise and low failure rate.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (6)

1. A defoaming pump comprises a driving device and an impeller, wherein the output end of the driving device is provided with a connecting shaft; it is characterized by also comprising:

the pump shell is fixedly arranged at one end of the driving device, and a defoaming cavity is formed in the pump shell; the side wall of the pump shell is provided with a liquid outlet, the end part of the pump shell is provided with a bubble suction inlet, and the liquid outlet and the bubble suction inlet are both communicated with the defoaming cavity; the impeller is accommodated in the defoaming cavity; the connecting shaft extends into the defoaming cavity and is in driving connection with the impeller;

the connecting shaft can rotatably penetrate through the liquid seal ceramic chip; the periphery of the liquid seal ceramic chip is fixedly connected with the wall surface of the defoaming cavity; and

and the liquid seal rubber piece is sleeved on the connecting shaft, and the periphery of the liquid seal rubber piece is attached to the side surface, facing the bubble suction inlet, of the liquid seal ceramic chip.

2. The defoaming pump of claim 1, wherein said liquid seal rubber member is an umbrella-shaped annular rubber member, the inner periphery of which is fixedly sleeved on said connecting shaft, and the outer periphery of which extends upward and is attached to the side surface of said liquid seal ceramic sheet facing said bubble suction port.

3. The defoaming pump of claim 1, wherein the pump housing includes a housing and a front cover; the shell is fixedly connected with the shell of the driving device; the front cover is sleeved on the shell through threads, and the liquid outlet and the bubble suction inlet are arranged on the front cover.

4. The defoaming pump of any one of claims 1 to 3, wherein the liquid discharge port and the impeller are disposed on the same horizontal plane.

5. The defoaming pump of any one of claims 1 to 3, wherein the bubble suction port and the impeller are coaxially disposed.

6. The defoaming pump of any one of claims 1-3, wherein the driving means is a motor.

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