CN204428977U - Centrifugal filtration device - Google Patents

Abstract

The utility model discloses a centrifugal filter device, which comprises a body, an eccentric air inlet, a sewage outlet and an air outlet. The body is provided with a bearing , wind impeller, rotor, bearing , an oil-water separation layer and a filter cup, the eccentric air inlet is arranged on the side wall of the body and faces the blade of the wind impeller, the air outlet is arranged at a position opposite to the eccentric air inlet, and the rotor runs through the wind impeller center, the oil-water separation layer is set at the lower part of the wind impeller, and one end of the rotor passes through the bearing fixed on the body, the other end passes through the bearing It is fixed on the oil-water separation layer, the filter cup is arranged at the lower part of the oil-water separation layer, and the sewage outlet is arranged at the bottom of the filter cup. The utility model uses an eccentric air inlet and a fan impeller, which directly makes the oil-water separation device generate a large centrifugal force very simply, the oil-water separation rate is very high, there is no pressure drop at the inlet and outlet, and the flow rate is large.

Description

centrifugal filter

technical field

The utility model relates to the field of pneumatic automation equipment control, in particular to a centrifugal filter device.

Background technique

In the fields of mechanical processing, aviation repair, pneumatic equipment, surface treatment, etc., the use of gas for cleaning, cooling, and power of various pneumatic components will be involved. At present, when using traditional compressed air pipelines for cleaning and cooling, the gas often contains a large amount of oil, water and impurities, which are not allowed in the production, processing and surface treatment processes. The traditional oil-water separator, that is, the oil-water filter device is composed of a shell, a separator, a filter element, and sewage components. Its working principle is that when compressed air containing a large amount of oil and water solid impurities enters the separator, it swirls along its inner wall and Under the centrifugal action, the oil and water are separated from the steam flow and flow down to the bottom of the oil-water separator along the wall, and then are finely filtered by the filter element, and the oil and water drip into the bottom of the separator under the action of gravity and are discharged from the drain valve. Even though this kind of separator has a high oil-water separation rate, the pressure drop generated is very high, resulting in an increase in cost; or the pressure drop is small, but the oil-water separation rate is low.

In addition, there are oil-water separators that use the adsorption of linoleum, activated carbon and other substances to separate oil and water, or the airflow passes through the vortex to generate vortex to separate the moisture, oil and impurities in the compressed air. These separators are bulky and the separation is not thorough enough. Or if the volume is small, the separation is not thorough enough when there is too much water, oil and impurities, and it is not easy to clean.

The Chinese patent with the patent application number 201320507024.7 discloses a centrifugal compressed air oil-water separator. The inlet and outlet nozzles pass through the head and are connected to the water-proof cup. One side of the water-proof cup is provided with an impeller shaft, and an anti-icing impeller is provided on the impeller shaft. ; There is a fixed seat on the partition, and a bearing is provided on the fixed seat; one side of the partition and the head are arranged on the shell of the water accumulation chamber; a check valve for the sewage outlet is set on the head; Pass through the partition and connect with the water storage chamber; the air intake chamber shell is composed of a rectification chamber and a diffusion chamber. The diffusion chamber is equipped with an inlet cone of the diffusion chamber, one side of which is equipped with a turbine, and the other side is connected to the separator ;The other end of the air intake cavity housing is provided with an air intake cabin housing fixing seat; one end of the separator is provided with an air intake cabin housing fixing seat, and the other end passes through the separator and is connected to the air accumulation chamber partition and the air accumulation chamber; the separation There is a drainage tube above the cavity, and one end of the drainage tube passes through the partition of the separation and gas accumulation chamber to connect with the gas accumulation chamber; Set on the housing of the gas accumulation chamber. Although the patent has a small pressure drop and a high oil-water separation rate, the structure of the device is complex and the cost is high.

Therefore, it is imminent to invent and create a filter device for separating oil and water with no pressure drop at the inlet and outlet, high oil-water separation rate, large flow rate, simple structure and low cost.

Utility model content

The technical problem to be solved by the utility model is how to overcome the defects of the existing oil-water separation device, such as high pressure drop at the inlet and outlet, low oil-water separation rate, complex structure, and high cost.

In order to solve the above technical problems, the utility model provides a centrifugal filter device, which includes a body, an eccentric air inlet, a sewage outlet and an air outlet, and a bearing is arranged in the body , wind impeller, rotor, bearing , an oil-water separation layer and a filter cup, the eccentric air inlet is arranged on the side wall of the body and faces the blade of the wind impeller, the air outlet is arranged at a position communicating with the eccentric air inlet, and the rotor runs through the wind impeller center, the oil-water separation layer is set at the lower part of the wind impeller, and one end of the rotor passes through the bearing fixed on the body, the other end passes through the bearing It is fixed on the oil-water separation layer, the filter cup is arranged at the lower part of the oil-water separation layer, and the sewage outlet is arranged at the bottom of the filter cup and connected with the bottom of the body.

Further, compressed air enters from the eccentric air inlet and pushes the blades of the wind impeller to rotate, generating air swirl at the lower part of the wind impeller, and a plurality of spacers for destroying the air swirl are arranged in the filter cup.

Further, one end of the spacer is connected to the oil-water separation layer, and the other end is suspended above the bottom of the filter cup.

Among them, the compressed air enters the main body through the eccentric air inlet, and drives the wind impeller to rotate at a high speed to generate a strong centrifugal force. Cup, the multiple spacers destroy the swirl of compressed air, the compressed air has no swirl in the filter cup, the airflow is stable, and the oil-water mixture flows into the bottom of the cup under the action of gravity and is discharged from the sewage outlet. When the filter cup is full When the air is compressed, the compressed air passes through the oil-water separation layer again, and the oil-water separation layer can inhibit the oil-water mixture from flowing out of the air outlet along with the compressed air.

Further, the oil-water separation layer is provided with at least two holes passing through the air impeller and the filter cup.

Further, the at least two holes are respectively arranged on the oil-water separation layers on both sides of the rotor.

Specifically, the bearing and bearings All are high speed bearings.

Specifically, the air outlet is arranged on the other side wall of the body opposite to the eccentric air inlet.

The centrifugal filter device of the present utility model has the following beneficial effects:

1. The eccentric air inlet of the utility model is facing the blade of the wind impeller. When the compressed air enters the body, it directly pushes the wind impeller to rotate at high speed, while the position of the air inlet in the prior art blows directly to the rotor, resulting in The swirl flow is small, and external force is needed to generate a larger swirl flow. Therefore, the utility model uses an eccentric air inlet and a wind impeller, which directly makes the oil-water separation device generate a large centrifugal force very simply, and the oil-water separation rate is very high. High; and in the prior art, the filter element is used to separate the oil-water mixture from the compressed air, so that the pressure drop at the inlet and outlet is relatively large. The utility model directly uses the wind impeller, so there is no pressure drop at the inlet and outlet, and the flow rate is large.

2. The lower part of the oil-water separation layer of the utility model is connected with a plurality of spacers. When the compressed air enters the filter cup through the oil-water separation layer, the spacers will destroy the swirling flow of the compressed air, so that the air flow is stable, and the oil-water mixture will not follow the compression. The air is brought out from the air outlet, and the oil-water separation rate is high.

3. Compared with the filter element with high cost and complex structure in the prior art, the utility model has simple structure, low cost, high oil-water separation rate and long service life.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is the perspective view of the centrifugal filter device of the present utility model;

Fig. 2 is the schematic diagram of centrifugal filter device of the present utility model;

Fig. 3 is a sectional view taken along line A-A in Fig. 2 .

In the figure: 1-body, 2-eccentric air inlet, 3-drainage outlet, 4-air outlet, 5-bearing I, 6-wind impeller, 7-rotor, 8-bearing II, 9-oil-water separation layer, 10 -Separator, 11-cup, 12-hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a centrifugal filter device, which includes a body 1, an eccentric air inlet 2, a sewage outlet 3 and an air outlet 4, and the body 1 is provided with a bearing 5, wind impeller 6, rotor 7, bearing 8. Oil-water separation layer 9 and filter cup 11, the eccentric air inlet 2 is set on the side wall of the body 1 and faces the blade of the wind impeller 6, and the air outlet 4 is set at a position communicating with the eccentric air inlet 2 The air outlet 4 is arranged on the other side wall of the main body 1 opposite to the eccentric air inlet 2, the rotor 7 runs through the center of the wind impeller 6, and the oil-water separation layer 9 is arranged at the lower part of the wind impeller 6, so One end of the rotor 7 passes through the bearing 5 is fixed on the body 1, and the other end passes through the bearing 8 is fixed on the oil-water separation layer 9, the filter cup 11 is arranged at the lower part of the oil-water separation layer 9, and the sewage outlet 3 is arranged at the bottom of the filter cup 11 and connected with the bottom of the body 1, wherein the bearing 5 and bearing 8 are high-speed bearings; compressed air enters from the eccentric air inlet 2 and pushes the blades of the wind impeller 6 to rotate, generating air swirl at the lower part of the wind impeller 6. The filter cup 11 is provided with three A spacer 10 for flow; one end of the spacer 10 is connected to the oil-water separation layer 9 in a slotted manner, and the other end is suspended above the bottom of the filter cup 11 .

The oil-water separation layer 9 is provided with at least two holes 12 passing through the air impeller 6 and the filter cup 11 , and the at least two holes 12 are respectively arranged on the oil-water separation layer 9 on both sides of the rotor 7 . Under the high-speed rotation of the wind impeller 6, compressed air flows into the filter cup through the hole 12 on the rotor side of the oil-water separation layer 9, and flows out of the filter cup through the hole 12 on the other side of the rotor on the oil-water separation layer 9.

In another embodiment, five spacers 10 for breaking the air swirl are arranged in the filter cup 11; one end of the spacer 10 is connected to the oil-water separation layer 9 in a threaded manner, and the other end is suspended in the filter cup 11 above the bottom.

In other embodiments, multiple spacers 10 can be provided as required, and one end of the spacers 10 only needs to be firmly connected with the oil-water separation layer 9 , and the other end is suspended above the bottom of the filter cup 11 .

Among them, compressed air enters the main body 1 through the eccentric air inlet 2, and pushes the wind impeller 6 to rotate at a high speed to generate a strong centrifugal force. The oil-water mixture is separated from the compressed air under the action of the strong centrifugal force, and passes through the oil-water separation layer 9 along the main body 1 The hole 12 enters the filter cup 11 with spacers 10, the plurality of spacers 10 destroy the swirl flow of the compressed air, the compressed air has no swirl flow in the filter cup 11, the air flow is stable, and the oil-water mixture flows in under the action of gravity The bottom of the cup is discharged from the sewage outlet 3. When the filter cup 11 is filled with compressed air, the compressed air passes through the oil-water separation layer 9 again, and the oil-water separation layer 9 can inhibit the oil-water mixture from flowing out from the air outlet 4 along with the compressed air.

The centrifugal filter device of the present utility model has the following beneficial effects:

1. The eccentric air inlet of the utility model is facing the blade of the wind impeller. When the compressed air enters the body, it directly pushes the wind impeller to rotate at a high speed, while the position of the air inlet in the prior art directly blows to the position of the rotor, so The generated swirl is small, and external force is needed to generate a larger swirl. Therefore, the utility model uses an eccentric air inlet and a wind impeller, which directly makes the oil-water separation device generate a relatively large centrifugal force very simply, and the oil-water separation rate Very high; and in the prior art, the filter element is used to separate the oil-water mixture from the compressed air, so that the pressure drop at the inlet and outlet is relatively large. The utility model directly uses the wind impeller, so there is no pressure drop at the inlet and outlet, and the flow rate is large.

2. The lower part of the oil-water separation layer of the utility model is connected with a plurality of spacers. When the compressed air enters the filter cup through the oil-water separation layer, the spacers will destroy the swirling flow of the compressed air, so that the air flow is stable, and the oil-water mixture will not follow the compression. The air is brought out from the air outlet, and the oil-water separation rate is high.

3. Compared with the filter element with high cost and complex structure in the prior art, the utility model has simple structure, low cost, high oil-water separation rate and long service life.

The above is a preferred embodiment of the present utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, some improvements and modifications can also be made, these improvements and modifications It is also regarded as the protection scope of the present utility model.

Claims (7)

1. The centrifugal filter device is characterized in that it includes a body (1), an eccentric air inlet (2), a sewage outlet (3) and an air outlet (4), and the body (1) is provided with a bearing (5), wind impeller (6), rotor (7), bearing (8), oil-water separation layer (9) and filter cup (11), the eccentric air inlet (2) is set on the side wall of the body (1) and faces the blade of the wind impeller (6), the air outlet (4) communicates with the eccentric air inlet (2), the rotor (7) runs through the center of the wind impeller (6), the oil-water separation layer (9) is arranged at the lower part of the wind impeller (6), and the rotor ( 7) One end through the bearing (5) is fixed on the body (1), and the other end passes through the bearing (8) fixed on the oil-water separation layer (9), the filter cup (11) is set at the lower part of the oil-water separation layer (9), and the sewage outlet (3) is set at the bottom of the filter cup (11) and connected with the body (1 ) connected at the bottom. 2. The centrifugal filter device according to claim 1, characterized in that compressed air enters from the eccentric air inlet (2) and pushes the blades of the wind impeller (6) to rotate, generating For air swirl, a plurality of spacers (10) for breaking the air swirl are arranged in the filter cup (11). 3. The centrifugal filter device according to claim 2, characterized in that one end of the spacer (10) is connected to the oil-water separation layer (9), and the other end is suspended above the bottom of the filter cup (11). 4. The centrifugal filter device according to any one of claims 1-3, characterized in that the oil-water separation layer (9) is provided with at least two through-air impellers (6) and filter cups (11) hole (12). 5. The centrifugal filter device according to claim 4, characterized in that the at least two holes (12) are respectively arranged on the oil-water separation layer (9) on both sides of the rotor (7). 6. The centrifugal filter device according to claim 5, wherein the bearing (5) and bearing (8) are high-speed bearings. 7. The centrifugal filter device according to claim 4 or 5, characterized in that, the air outlet (4) is arranged on the other side wall of the body (1) opposite to the eccentric air inlet (2).