CN108745667A - Novel two stage cyclone separator and cleaning systems - Google Patents

Abstract

Embodiments of the present invention provide a novel two-stage cyclone separator and a cleaning system, which relate to the technical field of material-liquid separation. The new two-stage cyclone separator includes an outer cylinder. A first air intake device is arranged outside the outer cylinder. The bottom end of the outer cylinder is provided with a dust removal device. An inner cylinder is nested in the outer cylinder along the axial direction of the outer cylinder. An overflow pipe is nested in the inner cylinder, and the overflow pipe protrudes from the top of the inner cylinder at a preset height. A second air intake device and a third air intake device that are center-symmetrical to the radial direction of the inner cylinder are arranged on the top end of the inner cylinder close to the dust discharge device. By setting the inner cylinder, the object to be separated entering from the first air inlet device passes through the outer cylinder and the inner cylinder for multiple swirls, thereby improving the separation effect.

Description

New double-stage cyclone separator and cleaning system

technical field

The invention relates to the technical field of material-liquid separation, in particular to a novel two-stage cyclone separator and a cleaning system.

Background technique

The main function of the existing cyclone separator is to remove the solid particle impurities and liquid droplets carried in the conveying medium gas, realize the effective separation of gas phase, solid phase and liquid phase, and ensure the normal operation of equipment and systems. The existing cyclone separator has the advantages of simple equipment structure, small size, low manufacturing cost, convenient maintenance and repair, and can be used for the separation and classification of powder coatings, plastic and metal particles, coal powder, and catalyst particles, and can also be used in various processes Demisting in process and separation of liquid components in drilling operations. The existing cyclone separator is composed of an air inlet, a cylinder section, a cone section, an overflow pipe, and an ash bucket. The side wall moves, and at the same time, the spiral movement flows downward into the lower part of the cyclone, and reverses upward after reaching the natural cyclone length, so that the gas-solid two phases can be separated. The separated solid phase particles fall into the ash hopper along the cylinder and cone walls, and the clean air is discharged from the overflow pipe. The separation effect of the existing cyclone separator is relatively poor.

Contents of the invention

The object of the present invention is to provide a novel double-stage cyclone separator and cleaning system to improve the above problems. In order to achieve the above object, the technical scheme that the present invention takes is as follows:

In the first aspect, the embodiment of the present invention provides a novel double-stage cyclone separator, which includes an outer cylinder. A first air intake device is arranged outside the outer cylinder. The bottom end of the outer cylinder is provided with a dust removal device. An inner cylinder is nested in the outer cylinder along the axial direction of the outer cylinder. An overflow pipe is nested in the inner cylinder, and the overflow pipe protrudes from the top of the inner cylinder at a predetermined height. A second air intake device and a third air intake device that are center-symmetrical to the radial direction of the inner cylinder are arranged on the top end of the inner cylinder close to the dust discharge device.

Optionally, the above-mentioned second air inlet device includes a first 90° volute type air inlet, and the third air inlet device includes a second 90° volute air inlet.

Optionally, the above-mentioned first air inlet device includes a tangential air inlet, and the total area of the first 90° volute air inlet and the second 90° volute air inlet is close to the The area of the tangential inlet.

Optionally, the outer cylinder includes a first hollow cylinder and a first hollow cone connected to the first hollow cylinder. The dust removal device is arranged at the bottom end of the first hollow cone.

Optionally, the above-mentioned novel double-stage cyclone separator further includes a baffle. The baffle is arranged between the outer cylinder and the inner cylinder. The top of the baffle is flush with the top of the first hollow cylinder, the baffle is coaxial with the first hollow cylinder and the length of the baffle is equal to that of the first hollow cylinder body height.

Optionally, the above-mentioned baffle is at a preset distance from the outer cylinder and the inner cylinder.

Optionally, the inner cylinder includes a second hollow cylinder and a second hollow cone connected to the second hollow cylinder. The height of the second hollow cylinder is equal to the height of the second hollow cylinder, the height of the first hollow cylinder, the inner diameter of the first hollow cylinder and the height of the first hollow cylinder. equal. The inner diameter of the first hollow cylinder is twice the inner diameter of the second hollow cylinder.

Optionally, the above-mentioned dust discharge device is a dust discharge hopper.

Optionally, the above-mentioned overflow pipe includes a vortex detector.

In the second aspect, an embodiment of the present invention provides a cleaning system, including a feeder, a cloud generator, a mixing chamber, an induced draft fan, and the above-mentioned novel double-stage cyclone separator. The mixing chamber is connected to the feeder, the cloud generator, and the novel two-stage cyclone separator, and the novel two-stage cyclone separator is connected to the induced draft fan.

Embodiments of the present invention provide a novel two-stage cyclone separator and a cleaning system. The novel two-stage cyclone separator includes an outer cylinder. A first air intake device is arranged outside the outer cylinder. The bottom end of the outer cylinder is provided with a dust removal device. An inner cylinder is nested in the outer cylinder along the axial direction of the outer cylinder. An overflow pipe is nested in the inner cylinder, and the overflow pipe protrudes from the top of the inner cylinder at a preset height. A second air intake device and a third air intake device that are center-symmetrical to the radial direction of the inner cylinder are arranged on the top end of the inner cylinder close to the dust discharge device. By setting the inner cylinder, the object to be separated entering from the first air intake device passes through the outer cylinder and the inner cylinder for multiple swirls, thereby improving the separation effect.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the sectional view of the novel two-stage cyclone separator that the embodiment of the present invention provides;

Fig. 2 is the top view of the novel two-stage cyclone separator provided by the embodiment of the present invention;

3 is a structural diagram of a cleaning system provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of the dry powder removal efficiency results of the new two-stage cyclone separator provided by the embodiment of the present invention and the existing Lapple type cyclone separator.

In the figure: 100-new two-stage cyclone separator; 110-outer cylinder; 112-first air intake device; 114-first hollow cylinder; 116-first hollow cone; 120-dust exhaust device; 122-outer Ash hopper; 124-inner ash hopper; 130-inner tube; 132-second air intake device; 134-third air intake device; 136-second hollow cylinder; 138-second hollow cone; 140-overflow 150-baffle; 300-cleaning system; 310-feeder; 320-cloud generator; 330-mixing chamber; 340-induced fan.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship indicated by the product of the invention when used Orientation or positional relationship that is conventionally placed is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a reference to the present invention. Invention Limitations. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that unless otherwise specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed electrical connection or a detachable electrical connection , or an integral electrical connection; it may be a mechanical electrical connection, or an electrical connection; it may be a direct connection, or an indirect connection through an intermediary, or an internal connection between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Please refer to FIG. 1 and FIG. 2 together. The embodiment of the present invention provides a novel two-stage cyclone separator 100 , including an outer cylinder 110 . A first air intake device 112 is disposed outside the outer cylinder 110 . The bottom end of the outer cylinder 110 is provided with a dust removal device 120 . An inner cylinder 130 is nested inside the outer cylinder 110 along the axial direction of the outer cylinder 110 . An overflow pipe 140 is nested in the inner cylinder 130 and the overflow pipe 140 protrudes from the top of the inner cylinder 130 at a predetermined height. A second air intake device 132 and a third air intake device 134 that are center-symmetrical to the radial direction of the inner cylinder 130 are disposed on the top end of the inner cylinder 130 close to the dust removal device 120 .

Optionally, the second air inlet device 132 includes a first 90° volute type air inlet, and the third air inlet device 134 includes a second 90° volute air inlet.

Optionally, the first air inlet device 112 may include a tangential air inlet, and the total area of the first 90° volute air inlet and the second 90° volute air inlet is close to The area of the tangential inlet.

In this embodiment, the total area of the first 90° volute air inlet and the second 90° volute air inlet may be 50 cm ² .

Optionally, the outer cylinder 110 may include a first hollow cylinder 114 and a first hollow cone 116 connected to the first hollow cylinder 114 . The dust removal device 120 is disposed at the bottom of the first hollow cone 116 . The outer cylinder 110 can be integrally formed.

Optionally, the novel double-stage cyclone separator 100 may further include a baffle 150 . The baffle 150 is disposed between the outer cylinder 110 and the inner cylinder 130 . The top of the baffle 150 is flush with the top of the first hollow cylinder 114, the baffle 150 is coaxial with the first hollow cylinder 114 and the length of the baffle 150 is equal to the Describe the height of the first hollow cylinder 114.

In this example, the length of the baffle 150 may be 400mm.

Optionally, the baffle plate 150 is at a preset distance from the outer cylinder 110 and the inner cylinder 130 .

In this embodiment, the preset distance may be 50 mm.

Optionally, the inner barrel 130 includes a second hollow cylinder 136 and a second hollow cone 138 connected to the second hollow cylinder 136 . The height of the second hollow cylinder 136 is the same as the height of the second hollow cylinder 138, the height of the first hollow cylinder 114, the inner diameter of the first hollow cylinder 114 and the first hollow cylinder. The heights of the bodies 116 are all equal. The inner diameter of the first hollow cylinder 114 is twice the inner diameter of the second hollow cylinder 136 .

In this embodiment, the height of the second hollow cylinder 136, the height of the second hollow cone 138, the height of the first hollow cylinder 114 and the inner diameter of the first hollow cylinder 114 are equal to Can be 400mm. The inner diameter of the first hollow cylinder 114 may be equal to the height of the first hollow cylinder 114 . The inner diameter of the first hollow cylinder 114 is 400 mm. The inner diameter of the second hollow cylinder 136 is 200mm. The inner diameter of the overflow pipe 140 is 100 mm, and the length of the overflow pipe 140 protruding into the first hollow cylinder 114 is 140 mm. The overflow pipe 140 protrudes from the top of the inner cylinder 130 at a predetermined height, and the predetermined height may be 50 mm.

Optionally, the dust removal device 120 includes an outer ash hopper 122 and an inner ash hopper 124 . The outer ash hopper 122 is connected to an end of the first hollow cone 116 away from the top of the first hollow cylinder 114 . The inner ash hopper 124 is connected to an end of the second hollow cone 138 away from the top of the second hollow cylinder 136 . The size of the inner ash hopper 124 is smaller than the size of the outer ash hopper 122 . The outer ash hopper 122 is used to collect the dust under the swirling flow of the outer cylinder. The inner ash hopper 124 is used to collect the dust under the swirling flow of the inner cylinder.

Optionally, the overflow pipe 140 includes a vortex finder.

The working principle of a novel two-stage cyclone separator 100 provided in the embodiment of the present invention is as follows:

The matter to be separated, such as air flow, enters the outer cylinder 110 from the first air intake device 112, and after a first swirl flow, the collected flow of the outer swirl flow flows into the dust discharge device 120 to realize the first separation. The inner swirling air flow enters the inner cylinder 130 through the second air intake device 132 and the third air inlet device 134 along the baffle plate 150, and then a secondary swirling flow is realized in the inner cylinder 130, and the collected flow of the outer swirling flow flows into the dust discharge device 120, The internal swirling gas flow exits the overflow pipe 140 .

An embodiment of the present invention provides a novel two-stage cyclone separator 100 , including an outer cylinder 110 . A first air intake device 112 is disposed outside the outer cylinder 110 . The bottom end of the outer cylinder 110 is provided with a dust removal device 120 . An inner cylinder 130 is nested inside the outer cylinder 110 along the axial direction of the outer cylinder 110 . An overflow pipe 140 is nested in the inner cylinder 130 and the overflow pipe 140 protrudes from the top of the inner cylinder 130 at a predetermined height. A second air intake device 132 and a third air intake device 134 that are center-symmetrical to the radial direction of the inner cylinder 130 are disposed on the top end of the inner cylinder 130 close to the dust removal device 120 . By setting the inner cylinder, the material to be separated entering from the first air intake device, such as the airflow, passes through the outer cylinder and the inner cylinder for multiple swirls, which improves the separation effect and can also realize the three-product classification of the material.

Please refer to FIG. 3 , an embodiment of the present invention provides a cleaning system 300 , which may include a feeder 310 , a cloud generator 320 , a mixing chamber 330 , an induced draft fan 340 and the above-mentioned novel two-stage cyclone separator 100 . The mixing chamber 330 is connected to the feeder 310 , the cloud generator 320 , and the novel two-stage cyclone separator 100 , and the novel two-stage cyclone separator 100 is connected to the induced draft fan 340 .

For example, test 1: a certain dust molecular sieve. The feed inlet concentration is 9g/m3. Under the negative pressure condition generated by the induced draft fan 340, the dust-laden airflow enters from the feeder 310, and is sent to the mixing chamber 330 of the particle growth area together with the liquid-phase airflow of the cloud generator 320, and then enters the new double-stage cyclone separator 100 , is discharged from the exhaust port of the induced draft fan 340 to the outlet concentration measurement area, and the outlet concentration is measured with a dust meter.

In addition, use the Lapple-type cyclone separator in the prior art and the new two-stage cyclone separator provided in this embodiment to separate the dusty airflow respectively, and the Lapple-type cyclone separator and the new two-stage cyclone separator have the same air volume, etc. Inlet area, measure pressure drop and calculate dust removal efficiency. The comparison of removal efficiency under two kinds of dry powder conditions is shown in Figure 4. The circular interval line represents the dry powder removal efficiency schematic diagram of the new two-stage cyclone separator provided in this example, and the square interval line represents the dry powder removal efficiency of the Lapple type cyclone separator. Schematic diagram, each inlet wind speed value, the corresponding efficiency in the new two-stage cyclone separator provided in this example is greater than the corresponding efficiency in the Lapple type cyclone separator, and the dust removal effect of the Lapple type cyclone separator is too low to meet the high standard Requirements: The one-time investment of the electrostatic precipitator is large, and the equipment operation cost is high; the new double-stage cyclone separator provided by the present invention has high efficiency, simple structure, and low investment cost.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the cleaning system described above can refer to the corresponding process in the above-mentioned embodiment of the new double-stage cyclone separator, and will not be repeated here.

An embodiment of the present invention provides a cleaning system 300, which may include a feeder 310, a cloud generator 320, a mixing chamber 330, an induced draft fan 340, and the above-mentioned novel two-stage cyclone separator 100. The mixing chamber 330 is connected to the feeder 310 , the cloud generator 320 , and the novel two-stage cyclone separator 100 , and the novel two-stage cyclone separator 100 is connected to the induced draft fan 340 . The separation effect is improved, thereby improving the cleaning efficiency.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A novel two-stage cyclone separator, characterized in that it comprises an outer cylinder, the outer cylinder is provided with a first air intake device, the bottom of the outer cylinder is provided with a dust discharge device, and the outer cylinder is provided with a dust discharge device. An inner cylinder is nested along the axial direction of the outer cylinder, an overflow pipe is nested in the inner cylinder, and the overflow pipe protrudes from the top end of the inner cylinder at a predetermined height, and in the A second air intake device and a third air intake device that are center-symmetrical to the radial direction of the inner cylinder are provided on the top end of the inner cylinder close to the direction of the dust discharge device. 2. The novel two-stage cyclone separator according to claim 1, wherein said second air inlet device comprises a first 90° volute type air inlet, and said third air inlet device comprises a second 90° ° Volute type air intake. 3. The novel two-stage cyclone separator according to claim 2, wherein said first air inlet device comprises a tangential air inlet, and said first 90° volute air inlet and said first air inlet The total area of the second 90° volute inlet is close to the area of the tangential inlet. 4. The novel two-stage cyclone separator according to claim 1, wherein the outer cylinder comprises a first hollow cylinder and a first hollow cone connected to the first hollow cylinder, and the row The dust device is arranged at the bottom end of the first hollow cone. 5. The novel two-stage cyclone separator according to claim 4, characterized in that, the novel two-stage cyclone separator also comprises a baffle, and the baffle is arranged on the outer cylinder and the inner cylinder Between, the top of the baffle is flush with the top of the first hollow cylinder, the baffle is coaxial with the first hollow cylinder, and the length of the baffle is equal to that of the first hollow cylinder. The height of a hollow cylinder. 6 . The novel two-stage cyclone separator according to claim 5 , wherein the baffle is at a preset distance from the outer cylinder and the inner cylinder. 7. The novel two-stage cyclone separator according to claim 4, wherein the inner cylinder comprises a second hollow cylinder and a second hollow cone connected to the second hollow cylinder, the first The height of the two hollow cylinders is equal to the height of the second hollow cone, the height of the first hollow cylinder, the inner diameter of the first hollow cylinder and the height of the first hollow cone, so The inner diameter of the first hollow cylinder is twice the inner diameter of the second hollow cylinder. 8. The novel two-stage cyclone separator according to claim 1, characterized in that the dust discharge device is a dust discharge hopper. 9. The novel two-stage cyclone separator according to claim 1, characterized in that said overflow pipe comprises a vortex finder. 10. A cleaning system, characterized in that it comprises a feeder, a cloud generator, a mixing chamber, an induced draft fan and the novel two-stage cyclone separator as claimed in any one of claims 1-9, the mixing chamber and The feeder, the cloud generator, and the novel two-stage cyclone separator are all connected, and the novel two-stage cyclone separator is connected with the induced draft fan.