CN213194166U - Cyclone dust collector - Google Patents

Abstract

The utility model discloses a cyclone dust collector, which comprises a top cover, an exhaust pipe, an air inlet pipe, a cylinder body, a cone and an ash discharge pipe; the air inlet pipe is fixedly connected to one side of the cylinder body, the exhaust pipe is fixedly connected to the top cover, and the top cover is fixedly connected with the round through body; the cone is fixedly connected to the bottom of the cylinder, and the tail end of the cone is fixedly connected with the ash discharge pipe. The device ensures that the airflow keeps downward rotation while rotating through the air inlet inclining downwards by 5-10 degrees, the downward inclination angle ensures that the absolute refraction is downward when dust particles rebound, the section of the spiral channel at the inlet is gradually reduced, the centrifugal force of the rotation of the airflow is increased, the inertia of the dust particles is improved, and the settling time of the dust particles is reduced; the cone body is lengthened and a small cone angle of 20 degrees is adopted, so that the retention time of the air flow in the separator is prolonged, complete sedimentation of small particles is facilitated, the downward rotating air is gently converted into upward rotating air, the dust removal efficiency is improved, and the dust removal device has a good application prospect.

Description

Cyclone dust collector

Technical Field

The utility model relates to a dust collecting equipment specifically is a cyclone.

Background

In the garbage disposal process, an incoming garbage truck firstly enters a discharging point, the garbage truck directly pours garbage into an underground garbage storage pit for collection, and then a travelling crane grab machine grabs the garbage to a feeding hopper above a spiral conveyor. Then the materials are sent to a pyrolysis gasification furnace by a shaftless screw conveyor for gasification and incineration.

Cooling the flue gas from the pyrolysis gasifier by a flue gas heat exchanger to obtain cooled and removed part of the tobacco tar; the flue gas is cooled by the steam-water heat exchanger and then enters a cyclone dust collector and a flue gas washing tower to remove smoke dust, heavy metals and acidic substances, so that the flue gas is discharged up to the standard, the process is complex, the existing dust removal requirement is difficult to meet, and the cyclone dust collector is further provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cyclone to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a cyclone dust collector comprises a top cover, an exhaust pipe, an air inlet pipe, a cylinder, a cone and an ash discharge pipe; the air inlet pipe is fixedly connected to one side of the cylinder body, the exhaust pipe is fixedly connected to the top cover, and the top cover is fixedly connected with the round through body; the cone is fixedly connected to the bottom of the cylinder body, and the tail end of the cone is fixedly connected with the ash discharge pipe; the air inlet in the air inlet pipe is inclined downwards by 5-10 degrees and adopts 180-degree half-circle spiral pipe, and the section of the spiral pipe is gradually reduced.

As a further aspect of the present invention: the diameter of the cylinder is 1800 mm, and the height of the cylinder is 2700 mm.

As a further aspect of the present invention: the cone adopts a cone angle of 20 degrees.

As a further aspect of the present invention: the diameter of the exhaust pipe is 400 mm, the insertion depth of the exhaust pipe is lower than the bottom of the air inlet, and the insertion depth of the exhaust pipe is 700 mm.

As a further aspect of the present invention: the diameter of the ash discharge pipe is 380 mm.

As a further aspect of the present invention: the exhaust pipe is extended to the bottom of the spiral track.

Compared with the prior art, the beneficial effects of the utility model are that: the downward inclination angle of the air inlet is 5-10 degrees, so that the air flow keeps downward rotation while rotating, the downward inclination angle ensures that dust particles are absolutely refracted downward when rebounded, and meanwhile, the air inlet pipe adopts a 180-degree half-circle spiral pipe to replace a traditional straight blowing barrel, so that the downward rotation of the air flow is further ensured; the section of the inlet spiral channel is decreased progressively, so that the centrifugal force of the rotation of the airflow is increased, the inertia of dust particles is improved, and the settling time of the dust particles is reduced; through the cone length extension and adopt 20 little cone angles, increased the dwell time of air current in the separator, be favorable to the settlement of tiny particle complete, and make the gaseous gentle the turning into of downrotation and turn over the rotation that makes to make dust collection efficiency can improve, simultaneously, make blast pipe and cone barrel bottom apart from shortening, increased the dust secondary and back mixed the discharged chance, improve the practicality.

The dust removing device for separating dust particles from dust-containing airflow by utilizing centrifugal force generated by rotating airflow has the characteristics of simple structure, small volume, no need of special auxiliary equipment, low manufacturing cost, moderate resistance, no moving part in the device, convenience in operation and maintenance and the like, and further has good application prospect.

Drawings

FIG. 1 is a schematic view of a cyclone.

In the figure: 1-top cover, 2-exhaust pipe, 3-air inlet pipe, 4-cylinder, 5-cone and 6-ash discharge pipe.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In addition, an element of the present invention may be said to be "secured to" or "disposed on" another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Example one

Referring to fig. 1, a cyclone dust collector includes a top cover 1, an exhaust pipe 2, an intake pipe 3, a cylinder 4, a cone 5 and an ash discharge pipe 6; the air inlet pipe 3 is fixedly connected to one side of the cylinder body 4, the exhaust pipe 2 is fixedly connected to the top cover 1, and the top cover 1 is fixedly connected with the round through body; the cone 5 is fixedly connected to the bottom of the cylinder 4, and the tail end of the cone 5 is fixedly connected with the ash discharge pipe 6; wherein, the air inlet in the intake pipe 3 descends and inclines 5 ° -10 °, and then makes the air current keep decurrent rotation when rotatory, and the angle of declination has guaranteed that absolute refraction is down when the dust particle is rebounded, intake pipe 3 has adopted 180 ° half a circle spiral pipe simultaneously, the further downward rotation of guaranteeing the air current, and its spiral pipeline cross-section diminishes progressively, the rotatory centrifugal force of air current has been increased, make contain dust gas realize 1.36 times acceleration in the spiral way, the inertia of dust particle has been improved, the settling time of dust particle has been reduced.

Further, the specific size of the cylinder is not limited, in this embodiment, the diameter of the cylinder 4 is 1800 mm, and the height of the cylinder 4 is 2700 mm; wherein the diameter of the cylinder 4 is the most basic size constituting the cyclone. The tangential velocity of the rotating airflow is inversely proportional to the centrifugal force generated by the dust and the diameter of the cylinder 4, and at the same tangential velocity, the smaller the diameter of the cylinder, the smaller the radius of rotation of the airflow, and the larger the centrifugal force applied to the particles, the more easily the dust particles are trapped.

Furthermore, the cone 5 adopts a small cone angle of 20 degrees, so that the retention time of the airflow in the separator is prolonged, the complete sedimentation of small particles is facilitated, and the downward rotating gas is gently converted into the upward rotating gas, so that the dust removal efficiency is improved.

Furthermore, the actual size of the exhaust pipe 2 is not limited, in this embodiment, the diameter of the exhaust pipe 2 is 400 mm, and the diameter and the insertion depth of the exhaust pipe 2 have a great influence on the dust removal efficiency of the cyclone dust collector; the insertion depth of the exhaust pipe 2 is too shallow, so that dust-containing airflow at the air inlet directly enters the exhaust pipe 2, and the dust removal efficiency is affected; the exhaust pipe 2 is inserted too deeply, so that the friction surface between the air flow and the pipe wall is easily increased, the resistance loss of the exhaust pipe is increased, meanwhile, the distance between the exhaust pipe 2 and the bottom of the conical cylinder is shortened, and the opportunity of secondary dust back-mixing discharge is increased. The insertion depth of the exhaust pipe 2 is generally slightly lower than the bottom of the air inlet; further, in this embodiment, the insertion depth of the exhaust pipe 2 is 700 mm.

Furthermore, the size and the structure of the ash discharge port have direct influence on the dust removal efficiency, so that the diameter of the ash discharge port is increased to enable the dust remover to descend under high pressure, the improvement of the dust removal efficiency is facilitated, but the dust discharge port can cause dust to be re-lifted if the diameter of the ash discharge port is too large, and further in the embodiment, the diameter of the ash discharge port is 380 millimeters.

The utility model discloses a theory of operation is: when dust-containing gas enters the cyclone dust collector through the gas inlet pipe 3, the gas flow is converted from linear motion to circular motion, most of the rotating gas flow spirally flows downwards along the cylinder wall and flows towards the cone, generally called as outward rotating gas flow, the dust-containing gas generates centrifugal force in the rotating process, dust particles with the weight greater than that of the gas are thrown towards the cylinder wall, the dust particles collide with the cylinder wall, the momentum of the inlet speed and the downward gravity lose inertia force and fall along the wall surface, the dust particles enter the dust exhaust pipe 6, and the outer rotating gas flow which rotates and descends approaches the center of the dust collector due to the contraction of the shape of the cone when reaching the cone. According to the principle that the rotation moment is unchanged, the tangential speed of the cyclone dust collector is continuously increased, when the airflow reaches a certain position at the lower end of the cone, the airflow rotates from the middle of the cyclone dust collector in the same rotation direction to the upper part from the lower part, the airflow continuously performs spiral motion, namely internal rotation, finally purified gas is discharged out of the cyclone dust collector through the exhaust pipe 2, and a part of dust particles which are not collected are also carried out, so that the dust collection of the gas is effectively realized.

Example two

In order to further improve the practical use effect of the device, the present embodiment is improved on the basis of the first embodiment, wherein the exhaust pipe 2 is extended to the bottom of the spiral track, so as to prevent dust particles in the inner part from wrapping in and out the air pipe, and the ratio of the cross-sectional areas of the inlet, the acceleration section and the outlet is enlarged to 1: 0.7: 2, that is, the outlet wind speed is half of the inlet wind speed, which is 1/3 for the internal acceleration section; effectively improve the mobile operating mode of waste gas in the barrel, reduce the back mixing phenomenon of ash bucket and the secondary raise dust that lower ash ring probably produced, improve the result of use.

The working principle of the embodiment is as follows: the outlet wind speed is half of the inlet wind speed, which is 1/3 for the internal acceleration section; effectively improve the mobile operating mode of waste gas in the barrel, reduce the back mixing phenomenon of ash bucket and the secondary raise dust that lower ash ring probably produced, improve the result of use.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. However, all changes which come within the scope of the independent claims of the invention are to be embraced therein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Claims (6)

1. A cyclone dust collector comprises a top cover (1), an exhaust pipe (2), an air inlet pipe (3), a cylinder body (4), a cone (5) and an ash discharge pipe (6), and is characterized in that the air inlet pipe (3) is fixedly connected to one side of the cylinder body (4), the exhaust pipe (2) is fixedly connected to the top cover (1), and the top cover (1) is fixedly connected with the circular through body; the cone (5) is fixedly connected to the bottom of the cylinder body (4), and the tail end of the cone (5) is fixedly connected with the ash discharge pipe (6); the air inlet in the air inlet pipe (3) is inclined downwards by 5-10 degrees and adopts 180-degree half-circle spiral pipe, and the section of the spiral pipe is gradually reduced.

2. Cyclone dust collector in accordance with claim 1, characterized in that the diameter of the cylinder (4) is 1800 mm and the height of the cylinder (4) is 2700 mm.

3. Cyclone dust collector in accordance with claim 2, characterized in that the cone (5) adopts a 20 ° cone angle.

4. A cyclone dust collector as claimed in claim 3, wherein the diameter of the exhaust pipe (2) is 400 mm, the depth of insertion of the exhaust pipe (2) is lower than the bottom of the air inlet, and the depth of insertion of the exhaust pipe (2) is 700 mm.

5. Cyclone dust collector in accordance with claim 4, characterized in that the diameter of the dust discharge pipe (6) is 380 mm.

6. Cyclone dust collector in accordance with claim 1, characterized in that the exhaust pipe (2) grows to the bottom of the spiral track.

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