CN111013836A - Air outlet cylinder structure and cyclone dust collector - Google Patents

Abstract

The utility model provides an air-out cylinder structure, involves dust removal technical field, the bottom of air-out cylinder is equipped with the extension section of thick bamboo that firm air current manifold was used, extension section of thick bamboo is upper and lower open-ended screen structure and this extension section of thick bamboo extends downwards along the air-out cylinder axial, still discloses a cyclone who contains this air-out cylinder structure, cyclone includes the cylinder that has air inlet, gas outlet and the awl barrel that has the dust removal mouth, through the extension section of thick bamboo that adds screen structure in air-out cylinder department, is equivalent to the length of extension air-out cylinder, makes it shorten with awl barrel bottom distance, makes the runner of interior whirl top spin more stable, has reduced the influence of outer whirl to it to, and, extension section of thick bamboo has screen structure, and screen structure can realize arbitrary the penetrating through of air current, not only can not produce the phenomenon that the dust secondary is backmixed, also can not too big increase outer whirl and the frictional resistance of cylinder wall, thereby realizing the optimization of the dust removal efficiency.

Description

Air outlet cylinder structure and cyclone dust collector

Technical Field

The invention relates to the technical field of dust removal, in particular to an air outlet cylinder structure and a cyclone dust collector with the same.

Background

Among mechanical dust collectors, the cyclone dust collector is the one with the highest efficiency, and is suitable for removing non-viscous and non-fibrous dust, and is mostly used for removing particles with the particle size of more than 5 microns. After the outer rotational flow reaches the bottom of the cone body, the outer rotational flow turns upwards and rotates upwards along the axis, the upward airflow is called as inner rotational flow, and finally the inner rotational flow is discharged through the air outlet barrel.

The inserting depth of the air outlet cylinder directly influences the dust removal efficiency, the air outlet cylinder is inserted too shallowly, dust-containing airflow at an air inlet is easily mixed into the inner rotational flow to enter the air outlet cylinder, the dust removal efficiency is influenced, and an inner rotational flow channel which turns upwards from the conical cylinder is unstable due to the fact that the distance from the conical cylinder is long, so that the inner rotational flow channel is easily influenced by the outer rotational flow; the air outlet cylinder is inserted deeply, the friction surface between the outer rotational flow and the wall of the cylinder body is easily increased, the airflow resistance loss is increased, and meanwhile, the distance between the air outlet cylinder and the bottom of the conical cylinder body is shortened, and the opportunity of secondary back-mixing discharge of dust is increased.

Therefore, how to change the mechanism of the air outlet cylinder makes the adjustment convenient and is beneficial to enhancing the dust removal efficiency, and the direction of continuous effort is.

Disclosure of Invention

Aiming at the problems, the air outlet cylinder structure is further improved, so that debugging personnel do not need to worry about the problem of over-depth or over-shallow during installation, the installation is convenient, and the dust removal efficiency is ensured.

The technical scheme provided by the invention is as follows:

the utility model provides an air-out cylinder structure, air-out cylinder structure sets up and is used for guiding the gaseous outer row of spiral at cylinder air outlet department, the bottom of air-out cylinder is equipped with the long section of thick bamboo that stabilizes the air current manifold usefulness, it is upper and lower open-ended screen mesh structure and this long section of thick bamboo along air-out cylinder axial downwardly extending to add long section of thick bamboo.

Further, the extension cylinder is made of a steel plate material.

The cyclone dust collector comprises a cylinder body with an air inlet and an air outlet and a cone body with a dust removal opening, wherein the air outlet is mounted at the air outlet.

Further, the lengthening cylinder extends to the joint of the cylinder body and the conical cylinder body.

Furthermore, the air inlet is externally connected with an air inlet pipeline which inclines downwards.

The beneficial effect that adopts this technical scheme to reach does:

the lengthened barrel with the screen structure is additionally arranged at the air outlet barrel, the length of the air outlet barrel is equivalently lengthened, the distance between the lengthened barrel and the bottom of the conical barrel is shortened, the runner of the inner cyclone upper screw is more stable, and the influence of the outer cyclone on the runner is reduced.

And the extension cylinder is provided with a screen structure, the screen structure can realize the random penetration of air flow, the phenomenon of secondary back mixing of dust is avoided, and the friction resistance between the outer rotational flow and the wall of the cylinder body is not excessively increased, so that the optimization of the dust removal efficiency is realized.

Drawings

FIG. 1 is a schematic diagram of the cylinder and cone structure of the cyclone dust collector.

Fig. 2 is a diagram illustrating an example of the structure of the present invention.

Fig. 3 is a cross-sectional view of an air intake duct.

Fig. 4 is a structural view of another embodiment of the scheme.

FIG. 5 is a view showing the structure of an extension cylinder.

Wherein: 10 cylinders, 11 air inlets, 12 air outlets, 20 conical cylinders, 21 dust removal ports, 30 air inlet pipelines, 31 connecting ends, 32 introducing ends, 40 air outlet cylinders and 50 lengthening cylinders.

Detailed Description

For a better understanding of the technical solutions of the present technology, the present technology is described in detail below with reference to the accompanying drawings, and the description of the present technology is only exemplary and explanatory, and should not be construed as limiting the scope of the present technology in any way.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the art are used, and are used only for convenience in describing the technology and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the technology.

In the description of the present technology, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present technology can be understood in a specific case to those of ordinary skill in the art.

The cyclone dust collector is the one with the highest efficiency in the mechanical dust collector, and referring to fig. 1, comprises a cylinder 10 and a cone cylinder 20 welded below the cylinder 10, wherein the cylinder 10 is provided with an air inlet 11, the air inlet 11 is tangentially arranged with the inner wall of the cylinder 10, so that the dust-containing air flow entering the cylinder 10 through the air inlet 11 can spirally downwards along the inner wall of the cylinder 10.

The cylinder 10 is further provided with an air outlet 12 for exhausting the air flow spiraling from bottom to top.

The bottom of the cone body 20 is provided with a dust removal opening 21, and after the granular dust collides with the inner wall of the cylinder body 10, the granular dust falls into an ash bucket (not shown) from the dust removal opening 21 under the action of inertia force and gravity.

Referring to fig. 2, the direction a in the drawing is the air inlet direction of the dust-containing gas, the upper dust ring is affected by the gas of the inner rotational flow after the dust-containing gas enters the air inlet 11, the circulating gas flow generated at the air outlet 12 and the upper dust ring are finally sucked by the inner rotational flow and directly discharged from the air outlet 12, so that part of the unpurified dust-containing gas is directly discharged outside, and the dust removal efficiency of the cyclone dust collector is seriously reduced.

In order to reduce the dust-containing concern of the upper dust ring and ensure that the particle dust can be removed from the dust removing opening 21 as much as possible, a gas inlet pipeline 30 communicated with the gas inlet 11 is obliquely arranged, the gas inlet pipeline 30 is used for transporting the dust-containing gas, and the dust-containing gas is conveyed into the cylinder body 10 from the gas inlet 11 through the gas inlet pipeline 30.

The air inlet pipeline 30 is obliquely arranged, when dust-containing gas enters the cylinder 10 through the air inlet pipeline 30, the dust-containing gas tends to incline downwards, so that attraction of the particles to get rid of the inner rotational flow is facilitated, and the downward inclination also enables the refraction direction of the particle substances flowing downwards in a spiral mode to be absolutely downward after the particle substances collide with the inner wall of the cylinder, and the influence of the inner rotational flow on the particle substances is more facilitated to get rid of.

The dust ring still exists, but through the design of the technical scheme, the dust particles contained in the dust ring are reduced, so that the probability that the dust particles are discharged from the air outlet 12 is reduced.

Of course, the air inlet duct 30 may have a variety of structural designs.

For example, the air inlet duct 30 is a straight tube duct, and is required to be inclined downward by 5 to 10 ° when fixedly connected to the cylindrical body 10.

It should be noted here that 5-10 ° is the optimum angle range for the particle dust matter to escape from the inner cyclone, and the inclined angle cannot be too large, and too large inclined angle shortens the spiral path of the dust-containing gas around the inner wall of the cylinder 10, which is not good for the sufficient separation of dust particles; and the angle is too small to enable the dust particles to have the speed of escaping from the attraction of the inner rotational flow.

Through a plurality of experimental tests, the downward inclination of 5-10 degrees can reduce the probability of discharging dust particles from the air outlet 12 by 30%.

Referring to fig. 3, the intake duct 30 is structurally divided into an introduction end 32 and a connection end 31, wherein the connection end 31 is a portion of the intake duct 30 close to the intake port 11, and the introduction end 32 is a portion far from the intake port 11.

The air duct cross section of the inlet 32 is larger than that of the connecting end 31, so that the dust-containing gas flowing from the inlet 32 to the connecting end 31 is accelerated in the pipeline in multiples, the movement inertia of dust particles is improved, and the settling time of the dust particles is reduced after the dust particles enter the cylinder 10.

Preferably: the air channels from the leading end 32 to the connecting end 31 are arranged in a descending manner.

In another embodiment of the present invention, the air inlet duct 30 is designed as a spiral duct, and referring to fig. 4, the air inlet duct 30 is spirally disposed on the cylindrical body 10.

In fig. 4, the direction of arrow B is the entering direction of the dust-containing gas, the spiral gas inlet pipe 30 not only makes the entering dust-containing gas have the initial velocity of inclining downwards, but also makes the dust-containing gas enter the cylinder 10 after rotating at high speed,

not only the mode that the dirty gas got into cylinder 10 can exert an influence to dust collection efficiency, the air current of discharging through gas outlet 12 also can exert an influence to a certain extent to dust collection efficiency.

Referring to fig. 1 to 5, the structure is mainly embodied on an air outlet cylinder 40, the air outlet cylinder 40 is sleeved in the air outlet 12, and the air outlet cylinder 40 is used for establishing an air duct for discharging the internal rotational flow to the outside, so that the internal rotational flow can smoothly rise from the bottom of the conical cylinder body 20 to the air outlet 12 to be discharged.

The air outlet cylinder 40 can be neither too long nor too short, so in order to adjust the convenience of installation personnel and further maintain the stability of the air duct, the bottom of the air outlet cylinder 40 is provided with an extension cylinder 50, the extension cylinder 50 is of a screen structure with an upper opening and a lower opening, and the extension cylinder 50 extends downwards along the axial direction of the air outlet cylinder 40.

The extension cylinder 50 is designed to be of a screen structure, which is not intended to play a role of filtration, but is important to achieve the purpose of not affecting the dust removal efficiency after the air outlet cylinder 40 is extended.

Here, it should be noted that: the density and the mesh number of the screen are determined after a plurality of tests according to the size and the humidity of dust particles, so that the situation that the existing dust particles block the meshes is avoided.

The extension of the extension cylinder 50 is beneficial to the stability of the inner cyclone air duct, but the design of the screen structure thereof allows the penetration of other air flows, especially for the outer cyclone, without increasing the frictional resistance with the inner wall of the cylinder 10.

Of course, the elongated extension tube 50 cannot be too long, and preferably, the extension tube 50 extends to the junction of the cylindrical body 10 and the cone body 20.

This is because the lengthening tube 50 is too long, which makes the air duct of the inner rotational flow more stable, and also makes the suction force generated by the inner rotational flow strengthened, so that the dust particles falling to the dust removing opening 21 are easily sucked into the air duct, and the secondary back-mixing phenomenon of the dust occurs, so that the dust particles are directly discharged out of the air outlet 12 through the inner rotational flow.

Therefore, the length of the extension tube 50 is preferably extended up to the joint between the cylindrical body 10 and the tapered cylindrical body 20.

Preferably, the extension cylinder 50 is made of a steel plate material.

This is because the dust-containing gas swirls in the cylindrical body 10 and collides with the extension cylinder 50 to some extent to cause abrasion, and the long-term abrasion seriously affects the service life thereof, so that the steel plate material is used to ensure the normal use thereof.

Preferably, the outer surface of the extension cylinder 50 is coated with a wear resistant coating to further extend its useful life.

It should be noted that there are no specific structures in the above description, and it will be apparent to those skilled in the art that various modifications, decorations, or changes can be made without departing from the technical principles of the present invention; such modifications, variations, or combinations, or applying the concepts and solutions of the technology directly to other applications without further modifications, are intended to be within the scope of the present technology.

Claims (5)

1. The utility model provides an air-out cylinder structure, air-out cylinder structure sets up and is used for guiding the outer row of spiral gas in gas outlet (12) department of cylinder (10), its characterized in that:

the bottom of play dryer (40) is equipped with extension section of thick bamboo (50) that firm air current shape was used, extension section of thick bamboo (50) are upper and lower open-ended screen cloth structure and this extension section of thick bamboo (50) extend downwards along play dryer (40) axial.

2. A chimney structure according to claim 1, wherein: the extension cylinder (50) is made of a steel plate material.

3. The utility model provides a cyclone, includes cylinder (10) that has air inlet (11), gas outlet (12) and the awl barrel (20) that has dust removal mouth (21), its characterized in that: an air outlet cylinder structure as claimed in claim 1 or 2 is arranged at the air outlet (12).

4. A cyclone collector as claimed in claim 3, wherein: the lengthening cylinder (50) extends to the joint of the cylinder body (10) and the cone body (20).

5. A cyclone collector as claimed in claim 3, wherein: the air inlet (11) is externally connected with an air inlet pipeline (30) which inclines downwards.

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