CN217015744U - Gas-liquid cyclone separation pipe and gas-liquid cyclone separation device with same - Google Patents

Abstract

The utility model provides a gas-liquid cyclone separating tube and a gas-liquid cyclone separating device with the same. A first air outlet is formed at the upper end of the inner sleeve, and a first air inlet is formed at the lower end of the inner sleeve; two free ends of the U-shaped pipe are second air inlets, a second air outlet is formed at one end of the U-shaped pipe opposite to the free ends, and the second air outlet is communicated with the first air inlet; the outer sleeve comprises a first cylinder and a second cylinder, the first cylinder is cylindrical, the second cylinder is funnel-shaped, the lower end of the first cylinder is communicated with the upper end of the second cylinder, a third air inlet is formed in the side face of the first cylinder, an installation opening matched with the inner sleeve is formed in the upper end of the first cylinder, the inner sleeve is fixed in the installation opening, the first air inlet is located in the outer sleeve, and a liquid outlet is formed in the lower end of the second cylinder; one end of the air inlet pipe is communicated with the third air inlet. The gas-liquid cyclone separating tube can effectively improve the gas-liquid separation effect.

Description

Gas-liquid cyclone separation pipe and gas-liquid cyclone separation device with same

Technical Field

The utility model relates to the technical field of electroplating waste gas treatment, in particular to a gas-liquid cyclone separating pipe and a gas-liquid cyclone separating device with the same.

Background

In the pretreatment link of electroplating waste gas, the waste gas mixed with chromic acid mist enters an outer sleeve of the gas-liquid cyclone separation pipe, and then is spirally sunk, and is extruded to start to spirally ascend after sinking to a funnel part of the outer sleeve, wherein the sunk air flow performs external spiral motion, and the ascended air flow performs internal spiral motion. The bigger chromic acid drops in the spiral sinking air flow can be thrown to the wall surface of the outer sleeve by the centrifugal force and flow out of the liquid outlet along the wall surface, and the rest air enters the air inlet of the inner sleeve along with the rising air flow and is discharged.

However, a short-circuit flow affecting the gas-liquid separation rate is present just below the exhaust pipe, and the short-circuit flow is a gas flow passage present between the ascending gas flow and the descending gas flow. The short-circuit flow is generated because only tangential and axial velocities exist after fluid passes through the air inlet pipe, the flow section is suddenly increased after the fluid enters the cylinder, the pressure is reduced along with the increase of the flow section, the sinking air flow obtains an inward radial velocity, and the short-circuit flow is formed between the sinking air flow and the ascending air flow. The short-circuit flow brings small liquid drops which are not thrown to the wall surface in the sunken airflow into the ascending airflow in advance and discharges the liquid drops, so that the effect of gas-liquid separation is influenced.

In addition, the sunken rotating air flow easily collides with the outer wall of the inner sleeve, so that liquid drops in the inner sleeve are crushed, the crushed liquid drops are splashed, part of the liquid drops are splashed to the short-circuit flow or the ascending air flow and are discharged together, and large liquid drops are crushed into small liquid drops and are not easily thrown onto the inner wall, so that the gas-liquid separation rate is reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a gas-liquid cyclone separator tube, which enables a sinking airflow to throw chromic acid droplets onto an inner wall of an outer sleeve for a longer time, and can realize secondary separation of gas and liquid, thereby improving a gas-liquid separation effect.

The utility model also provides a gas-liquid cyclone separation device with the gas-liquid cyclone separation pipe.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the gas-liquid cyclone separating tube of the present invention comprises:

the upper end of the inner sleeve is provided with a first air outlet, and the lower end of the inner sleeve is provided with a first air inlet;

the two free ends of the U-shaped pipe are second air inlets, a second air outlet is formed at one end of the U-shaped pipe opposite to the free ends, and the second air outlet is communicated with the first air inlet;

the outer sleeve comprises a first cylinder and a second cylinder, the first cylinder is cylindrical, the second cylinder is funnel-shaped, the lower end of the first cylinder is communicated with the upper end of the second cylinder, a third air inlet is formed in the side surface of the first cylinder, an installation opening matched with the inner sleeve is formed in the upper end of the first cylinder, the inner sleeve is fixed in the installation opening, the first air inlet is located in the outer sleeve, and a liquid outlet is formed in the lower end of the second cylinder;

and one end of the air inlet pipe is communicated with the third air inlet.

Further, the air inlet pipe is obliquely cut to the first cylinder.

Further, the gas-liquid cyclone separation pipe is integrally made of resin.

Further, an upper end of the inner sleeve is formed in a cylindrical shape, and a lower end thereof is formed in a funnel shape.

Further, the taper angle of the second cylinder is 10-15 degrees.

Further, the taper angle of the second cylinder is 11.4 °.

The gas-liquid cyclone separation device of the present invention comprises:

the gas-liquid cyclone separating tube described above;

and a liquid outlet of the outer sleeve of the gas-liquid cyclone separation pipe is communicated with an upper end opening of the liquid collecting tank.

The technical scheme of the utility model has at least one of the following beneficial effects:

after the U-shaped pipe is additionally arranged on the gas-liquid cyclone separation pipe, the inner sleeve is equivalently prolonged, and the escape position of chromic acid liquid drops along with the short-circuit flow is lowered, so that the sinking air flow has more time to throw the chromic acid liquid drops onto the inner wall of the outer sleeve, and the gas-liquid separation effect is improved.

In addition, after the ascending air flow enters the arc-shaped part of the U-shaped pipe, the ascending air flow collides with the inner wall of the arc-shaped part, so that part of chromic acid liquid drops which are not thrown out are thrown onto the arc-shaped inner wall and flow out to the liquid outlet of the outer sleeve along the inner wall, secondary separation of gas and liquid is realized, and the effect of gas and liquid separation is further improved.

Drawings

FIG. 1 is a perspective view of a gas-liquid cyclone tube according to an embodiment of a first aspect of the present invention;

FIG. 2 is a top view of a gas-liquid cyclone in an embodiment of the first aspect of the present invention;

fig. 3 is a schematic structural view of a U-shaped tube of the gas-liquid cyclone tube according to an embodiment of the first aspect of the present invention.

Reference numerals are as follows: 1. an inner sleeve; 2, a U-shaped pipe; 3. an outer sleeve; 4. an air inlet pipe; 5. a first air outlet; 6. a first air inlet; 7. a second air inlet; 8. a second air outlet; 9. a first cylinder; 10. a second cylinder; 11. a third air inlet; 12. an installation port; 13. and a liquid outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model, are within the scope of the utility model.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships are changed accordingly.

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

As shown in fig. 1 to 3, the gas-liquid cyclone separating tube according to the embodiment of the first aspect of the present invention includes an inner sleeve 1, a U-shaped tube 2, an outer sleeve 3, and a gas inlet tube 4. A first air outlet 5 is formed at the upper end of the inner sleeve 1, and a first air inlet 6 is formed at the lower end of the inner sleeve; two free ends of the U-shaped pipe 2 are provided with second air inlets 7, one end of the U-shaped pipe 2 opposite to the free ends is provided with a second air outlet 8, and the second air outlet 8 is communicated with the first air inlet 6; the outer sleeve 3 comprises a first cylinder 9 and a second cylinder 10, the first cylinder 9 is formed into a cylindrical shape, the second cylinder 10 is formed into a funnel shape, the lower end of the first cylinder 9 is communicated with the upper end of the second cylinder 10, a third air inlet 11 is formed in the side face of the first cylinder 9, an installation opening 12 matched with the inner sleeve 1 is formed in the upper end of the first cylinder 9, the inner sleeve 1 is fixed in the installation opening 12, the first air inlet 6 is located in the outer sleeve 3, and a liquid outlet 13 is formed in the lower end of the second cylinder 10; one end of the intake pipe 4 communicates with the third intake port 11.

The inner sleeve 1 of the utility model is fixed at the mounting port 12 at the upper end of the outer sleeve 3, and the mounting port 12 is seamlessly connected with the outer wall of the inner sleeve 1, thereby ensuring that the ascending air flow in the outer sleeve 3 can only be discharged from the first air outlet 5 of the inner sleeve 1. The length direction of the inner sleeve 1 is consistent with that of the outer sleeve 3, and the axes are overlapped as much as possible, so that the flowing uniformity of the internal airflow is ensured. Two free ends of the U-shaped pipe 2 are provided with second air inlets 7, and the orientation of the two second air inlets 7 is kept consistent with that of the liquid outlet 13 at the lower end of the outer sleeve 3 as much as possible, so that the ascending air flow can smoothly enter the U-shaped pipe 2. After the U-shaped pipe 2 is additionally arranged, namely the inner sleeve 1 is prolonged, and the escape position of chromic acid liquid drops along with the short-circuit flow is lower, so that the sinking air flow has more time to throw the chromic acid liquid drops onto the inner wall of the outer sleeve 3, and the gas-liquid separation effect is improved. In addition, after the ascending air flow enters the arc-shaped part of the U-shaped pipe 2, the ascending air flow collides with the inner wall of the arc-shaped part, so that part of chromic acid liquid drops which are not thrown out are thrown onto the arc-shaped inner wall and flow out to the liquid outlet 13 of the outer sleeve 3 along the inner wall, secondary separation of gas and liquid is realized, and the effect of gas-liquid separation is further improved. The side surface of the first cylinder 9 of the outer sleeve 3 is communicated with the air inlet pipe 4, the air inlet pipe 4 can be designed to be square, the side wall of the air inlet pipe 4 is tangent to the side wall of the first cylinder 9, as shown in fig. 2, the air inlet pipe 4 and the first cylinder 9 form a whistle shape, and therefore it is guaranteed that air flow can rotate along the inner wall after entering the first cylinder 9 from the air inlet pipe 4.

Further, the intake pipe 4 is chamfered to the first cylinder 9. That is, the free end of the air inlet pipe 4 is higher than the connecting end of the air inlet pipe 4, and the air flow enters the first cylinder 9 obliquely, so that the speed of the air flow has a larger component in the downward direction, thereby ensuring the sinking movement of the air flow.

Further, the gas-liquid cyclone separating tube is integrally made of resin. Of course, the gas-liquid cyclone separation pipe can also adopt a glass part and the like on the premise of ensuring that the gas-liquid cyclone separation pipe does not react with components in the gas flow. In addition, the gas-liquid cyclone tube can be integrally formed and can also be bonded, so that the stability and the sealing performance are guaranteed.

Further, the upper end of the inner sleeve 1 is formed in a cylindrical shape and the lower end is formed in a funnel shape. The lower extreme of the infundibulate of inner skleeve 1 communicates with the arc part of U type pipe 2, and the design of infundibulate is for conveniently connecting U type pipe 2 on the one hand, and on the other hand has also reduced interior sheathed tube lower extreme diameter for the outer wall of inner skleeve 1 lower extreme is difficult for being touch to rotatory air current, has effectively avoided the chromic acid liquid drop to be bumped garrulous problem, has improved the gas-liquid separation rate.

Further, the taper angle of the second cylinder 10 is 10 ° to 15 °. In order to ensure the formation of the internal rotation air flow, the taper angle of the second cylinder 10 is not set to be too large, and the taper angle is set to be in the range of 10 ° to 15 ° as proved by experiments, and preferably, the taper angle of the second cylinder 10 may be set to be 11.4 °.

The gas-liquid cyclone separating device of the second aspect of the utility model comprises the gas-liquid cyclone separating tube and the liquid collecting tank, wherein the liquid outlet 13 of the outer sleeve 3 of the gas-liquid cyclone separating tube is communicated with the upper end opening of the liquid collecting tank. Because the gas-liquid cyclone separation device comprises the gas-liquid cyclone separation pipe, the sunken airflow has more time to throw chromic acid droplets onto the inner wall of the outer sleeve 3, and secondary gas-liquid separation can be realized, so that the gas-liquid separation effect is improved.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (7)

1. A gas-liquid cyclone tube, comprising:

the upper end of the inner sleeve is provided with a first air outlet, and the lower end of the inner sleeve is provided with a first air inlet;

the two free ends of the U-shaped pipe are second air inlets, a second air outlet is formed at one end of the U-shaped pipe opposite to the free ends, and the second air outlet is communicated with the first air inlet;

the outer sleeve comprises a first cylinder and a second cylinder, the first cylinder is cylindrical, the second cylinder is funnel-shaped, the lower end of the first cylinder is communicated with the upper end of the second cylinder, a third air inlet is formed in the side surface of the first cylinder, an installation opening matched with the inner sleeve is formed in the upper end of the first cylinder, the inner sleeve is fixed in the installation opening, the first air inlet is located in the outer sleeve, and a liquid outlet is formed in the lower end of the second cylinder;

and one end of the air inlet pipe is communicated with the third air inlet.

2. The gas-liquid cyclone tube as claimed in claim 1, wherein the inlet tube is chamfered to the first cylinder.

3. The gas-liquid cyclone as recited in claim 1, wherein the integral body is a resin member.

4. The gas-liquid cyclone as claimed in claim 1, wherein an upper end of the inner sleeve is formed in a cylindrical shape and a lower end thereof is formed in a funnel shape.

5. The gas-liquid cyclone as recited in claim 1, wherein the second cylinder has a taper angle of 10 ° to 15 °.

6. The gas-liquid cyclone tube as claimed in claim 5, wherein the second cylinder has a taper angle of 11.4 °.

7. A gas-liquid cyclone separating apparatus, comprising:

the gas-liquid cyclone of any one of claims 1 to 6;

and a liquid outlet of the outer sleeve of the gas-liquid cyclone separation pipe is communicated with an upper end opening of the liquid collecting tank.

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