WO2017030263A1

WO2017030263A1 - Dust collecting device having structurally improved blow pipe

Info

Publication number: WO2017030263A1
Application number: PCT/KR2016/002902
Authority: WO
Inventors: 이충중
Original assignee: 이충중
Priority date: 2015-08-18
Filing date: 2016-03-23
Publication date: 2017-02-23
Also published as: KR20170021721A; KR101737269B1

Abstract

A dust collecting device having a structurally improved blow pipe has internal nozzles, which are installed at a predetermined interval inside a blow pipe and evenly blow compressed air into a filter to increase the effect of cleaning of the filter, thereby preventing the filter from being damaged. The present invention evenly blows a lot of air into a filter by internal nozzles installed inside a blow pipe to increase the effect of cleaning of the upper portion of the filter, thereby minimizing destruction of the filter.

Description

Dust collector improves blow pipe structure

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector, and in particular, an internal nozzle for evenly injecting compressed air into a filter inside the blow pipe is installed at regular intervals to increase the cleaning effect of the filter, thereby preventing the damage of the filter. It is about an improved dust collector.

Most industrial dust collectors install a pulse jet filter bag cleaning device to periodically clean the filter bag.

The filter bag cleaning principle is that compressed air is supplied from the air tank of the dust collector through the air compressor pipe, and the high pressure compressed air goes out through the diaphragm valve and blows the pipe when the diagram valve connected to the air tank is momentarily turned on and off. The nozzle is fired into the filter bag at a high speed through the nozzle to shake off the accumulated dust on the outside of the filter bag.

1 to 3 is a view showing a state in which the compressed air is injected into the filter in the blow pipe according to the prior art.

As shown in FIG. 1, the filter bag 13 used in the dust collector of the prior art operates a pulse jet to fire compressed air into the filter 14 through the air nozzle 12 of the blow pipe 10. When dust is not shaken on the upper part of the filter 14 and excessive compressed air pressure is transmitted to the lower part of the filter 14, the filter 14 may be damaged, thereby shortening the life of the filter bag 13. There is a phenomenon.

The blow pipe 10 of the prior art does not evenly spray the compressed air inside the filter 14, so that the upper portion of the filter 14 is not shaken, resulting in a back pressure, which is a high risk of damage to the filter 14 There is this.

As shown in FIG. 2, when the nozzle of the blow pipe 10 of the related art is shifted from the center of the air nozzle 12 at the center of the filter 14, the compressed air of high pressure is placed on the upper part of the filter 14. There is a problem that the filter 14 breakage occurs frequently due to concentration.

In order to solve this problem, the conventional blow pipe 10 attaches various types of devices to the outside of the nozzle portion from which the compressed air is fired to increase the cleaning effect of the filter bag.

However, the device attached to the outside of the blow pipe 10 has the advantage that the flow rate of air is greatly increased, but when the dust collector sucks in the dust through the filter 14, that is, the device protrudes outside the blow pipe 10 during the suction process This causes a problem of greatly increasing the suction differential pressure.

As shown in FIG. 3, in the high temperature dust collector, moisture is generated and condensed due to a temperature variation when it meets a high temperature (130 to 200 ° C.) inside the dust collector during a pulse jet cleaning process.

This is a major cause of hydrolysis and acid production, that is, moisture condensed by acid dew point turns into acid and damages the filter bag.

In order to solve the above problems, the present invention provides an internal nozzle for evenly spraying compressed air inside the filter inside the blow pipe at regular intervals to increase the cleaning effect of the filter, thereby preventing damage to the filter. The purpose is to provide a dust collector with improved structure.

Dust inlet 101 and dust collecting case 103 formed with a dust inlet 101 and the air outlet 102 according to the characteristics of the present invention for achieving the above object, dust in the air discharged to the outside installed in the dust collecting case 103 A horizontal blow pipe 110 of a constant length in a horizontal direction, having a plurality of filters 105 and an air nozzle corresponding to each filter 105, is installed inside the dust collecting case 103, and the blow pipe ( In the dust collector for removing the dust stuck to the filter 105 by injecting compressed air from the air nozzle of 110 to the filter 105,

The blow pipe 110 forms an upper opening 112 by drilling one side of the upper surface, and a lower opening 114 having a larger diameter than the upper opening 112 is formed by drilling one side of the lower surface, so that the upper opening 112 is formed. Communication from the lower opening 114 to

The inside of the blow pipe 110 is connected to and communicated with the upper nozzle 210 of the upper and lower pipes extending in the downward direction from the upper opening 112, and the open lower surface of the upper nozzle 210. The lower surface is coupled to the lower opening 114, the diffusion nozzle 230 of the pipe shape penetrating up and down with a diameter larger than the diameter of the upper nozzle 210, and the lower outer edge and the diffusion of the upper nozzle 210 The internal nozzle 200 in which a plurality of injection holes 223 are formed at regular intervals between the upper outer edges of the nozzle 230 is provided at regular intervals.

According to the above configuration, the present invention has the effect that the suction differential pressure is not generated during the suction process by installing a nozzle inside the blow pipe.

The present invention generates a Coanda effect by the internal nozzle installed inside the blow pipe to suck the outside air to supply a large amount of air into the filter, thereby minimizing the damage of the filter, the filter cleaning effect The height is effective.

The present invention has the effect of increasing the cleaning effect by generating vibration in the filter by the sound wave generation when the compressed air passes through the inner nozzle due to the horn structure of the inner nozzle installed in the blow pipe.

The present invention evenly sprays a lot of air into the inside of the filter by an internal nozzle installed inside the blow pipe, thereby increasing the cleaning effect of the upper part of the filter and minimizing the breakage of the filter.

The present invention generates a Coanda effect by the internal nozzle installed inside the blow pipe to suck the air at a high temperature of the surroundings to raise the temperature of the compressed air to a certain temperature, thereby minimizing moisture condensation. Damage to the filter can be reduced.

4 is a view showing the configuration of a dust collector according to an embodiment of the present invention.

5 is a perspective view showing the configuration of a blow pipe incorporating an internal nozzle according to an exemplary embodiment of the present invention.

6 is an exploded perspective view illustrating an internal nozzle according to an exemplary embodiment of the present invention.

7 is a cross-sectional view showing the configuration of a blow pipe with an internal nozzle according to an embodiment of the present invention.

8 is an exploded view of an internal nozzle according to an exemplary embodiment of the present invention.

9 is a perspective view of an internal nozzle according to another embodiment of the present invention.

10 is an exploded perspective view showing an internal nozzle according to another embodiment of the present invention.

11 is a cross-sectional view showing the configuration of a blow pipe with an internal nozzle according to another embodiment of the present invention.

12 is a plan view of an injection nozzle of a blow pipe having an internal nozzle according to another exemplary embodiment of the present invention.

13 is a view illustrating various embodiments of an internal nozzle according to an embodiment of the present invention.

14 is a view showing a coupling of the internal nozzle to the blow pipe according to an embodiment of the present invention.

15 is a view showing the flow of compressed air of the blow pipe with the internal nozzle according to an embodiment of the present invention.

FIG. 16 is a diagram illustrating a case where a center of an internal nozzle according to an exemplary embodiment of the present invention is misaligned with a filter.

17 is a cross-sectional view showing the configuration of a blow pipe incorporating an internal nozzle according to another embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

The dust collector 100 according to the embodiment of the present invention includes a dust collecting case 103 having a dust inlet 101 and an air outlet 102.

When the exhaust fan of the air discharge port 102 is operated, external dust is introduced into the dust collecting case 103 together with air through the dust suction hole due to the pressure change inside the dust collecting case 103.

The introduced dust is filtered by a filter installed in the perforated plate 105 inside the dust collecting case 103.

Thus, the filtered clean air exits through the air outlet 102 to the outside. The filtered dust is collected to fall to the bottom of the interior of the dust collecting case (103).

In the dust collecting case 103, the diagram valve 107 connected to the air tank 106 is turned on and off momentarily, and high pressure compressed air is supplied to the blow pipe 110 through the diagram valve 107.

When the compressed air blows back toward the filter 105 using the blow pipe 110, the dust adhering to the filter 105 by the backwind in the opposite direction to the exhaust fan falls.

At this time, the inside of the blow pipe 110 of the present invention is formed to the size of the diameter of the blow pipe 110, the internal nozzle 200 to evenly spray the compressed air into the filter 105 to increase the cleaning effect is constant It is installed every interval.

A configuration of the internal nozzle 200 will be described in detail with reference to FIGS. 5 to 8 below.

Figure 5 is a perspective view showing the configuration of the blow pipe with the internal nozzle according to an embodiment of the present invention, Figure 6 is an exploded perspective view showing an internal nozzle according to an embodiment of the present invention, Figure 7 is an embodiment of the present invention FIG. 8 is a cross-sectional view showing a configuration of a blow pipe incorporating an internal nozzle, and FIG. 8 is a cross-sectional view illustrating injection of compressed air between a blow pipe incorporating an internal nozzle and a filter according to an exemplary embodiment of the present invention.

The blow pipe 110 incorporating the internal nozzle 200 according to the embodiment of the present invention has a function of spraying compressed air into the inside of the filter 105 and having a constant length in a horizontal direction inside the dust collecting case 103. Do it.

The internal nozzle 200 is formed to have a size as large as the diameter of the blow pipe 110 to uniformly inject a lot of compressed air into the inside of the filter 105 and is installed at regular intervals inside the blow pipe 110.

The blow pipe 110 forms an upper opening 112 by drilling one side of the upper surface, and forms a lower opening 114 larger than the diameter of the upper opening 112 by drilling one side of the lower surface of the blow pipe 110. And communicates from the upper opening 112 to the lower opening 114.

The internal nozzle 200 includes an upper nozzle 210, a spray nozzle 220, and a diffusion nozzle 230.

The upper nozzle 210 has a nozzle body 211 having a cylindrical pipe shape penetrated up and down, an open upper surface of the nozzle body 211 with a first opening 212, and an open lower part of the nozzle body 211. The surface is composed of a second opening 213.

The upper end of the upper nozzle 210 is fitted into the upper opening 112 of the inner nozzle 200 is coupled.

The injection nozzle 220 is formed with a central hole 222 having a central opening so that the lower end of the upper nozzle 210 is coupled, and the injection hole 223 is provided at regular intervals between the central hole 222 and the outer diameter of the circular edge. It includes a disk body 221 made of a disk shape that is formed.

The injection hole 223 may be manufactured by laser cutting, superdrilling, waterjet cutting, etc. at regular intervals around the circumference in a circle, oval, square, or the like.

Diffusion nozzle 230 is a diffusion nozzle body 231 in the form of a cylindrical pipe penetrated up and down, the open upper surface of the diffusion nozzle body 231 of the first opening 232 and the diffusion nozzle body 231 The open lower surface is composed of a second opening 233, the injection nozzle 220 of the disc is coupled to the open upper surface of the diffusion nozzle body 231, the open lower end of the diffusion nozzle body 231 Fit into the lower opening 114 is coupled.

The diffusion nozzle body 231 is formed in a tapered shape that becomes narrower from the lower opening 114 to the upper end thereof.

The diameter of the upper nozzle 210 is 30 to 50% of the diameter of the diffusion nozzle 230, the diameter of the diffusion nozzle 230 is 50 to 80% of the diameter of the blow pipe 110.

FIG. 8A illustrates a cross section of the upper nozzle 210, FIG. 8D illustrates a cross section of the diffusion nozzle 230, and FIGS. 8B and 8C illustrate the injection nozzle 220. The form is shown in two examples.

9 is a perspective view of an inner nozzle according to another embodiment of the present invention, FIG. 10 is an exploded perspective view showing an inner nozzle according to another embodiment of the present invention, and FIG. 11 is an inner nozzle according to another embodiment of the present invention. 12 is a cross-sectional view showing the configuration of a blow pipe therein, and FIG. 12 is a plan view of a spray nozzle of a blow pipe having an internal nozzle according to another embodiment of the present invention.

9 to 12, the internal nozzle 200 includes an upper nozzle 210, an injection nozzle 220, and a diffusion nozzle 230. In the present embodiment, the same reference numerals are used for the same components as those in Figs. 6 to 8, and only the embodiments are different.

The injection nozzle 220 is formed with a central hole 222 having a central opening so that the lower end of the upper nozzle 210 is coupled, and the injection hole 223 is provided at regular intervals between the central hole 222 and the outer diameter of the circular edge. It is formed to be a total of five, and includes a disc body 221 made of a disc shape.

Diffusion nozzle body 231 is formed in a tapered form that the diameter becomes narrower toward the upper end from the lower opening 114, is formed constant from the middle portion without narrowing the diameter as necessary.

13 is a diagram illustrating various embodiments of the internal nozzle 200 according to an embodiment of the present invention.

FIG. 13A illustrates the internal nozzle 200 of FIG. 6 described above, and detailed descriptions of the components of FIGS. 5 to 8 are omitted.

(B), (c) and (d) of FIG. 13 will be described based on differences compared to FIG. 9 (a).

FIG. 13B includes an upper nozzle 210 including a tapered shape in which the diameter becomes narrower from the upper opening 112 to the lower end thereof.

FIG. 13C includes an upper nozzle 210 including a tapered form, the diameter of which narrows from the upper opening 112 to the lower end thereof, and a diffusion nozzle 230 such as a bottleneck of which the center portion is narrowly narrowed. . Figure 13 (d) includes a diffusion nozzle 230, such as a bottleneck narrowly narrowed at the center.

14 is a view showing a coupling of the internal nozzle to the blow pipe according to an embodiment of the present invention, Figure 15 is a flow of compressed air of the blow pipe with the internal nozzle according to an embodiment of the present invention. FIG. 16 is a diagram illustrating a case where the center of the internal nozzle is shifted from the center of the filter 105 according to the exemplary embodiment of the present invention.

A process of mounting the internal nozzle 200 on the blow pipe 110 will be described below.

First, the upper opening 112 of the blow pipe 110 is selected by using one of the following methods: hole processing, hole saw processing, pipe laser cutting, and plasma cutting processing on the blow pipe 110. Cut by the outer diameter of the upper surface of the lower opening 114 of the blow pipe 110 is cut by the outer diameter of the lower surface of the diffusion nozzle (230).

Pipe laser cutting is preferred to precisely determine the size of the holes, the spacing of the holes, and the like.

The blow pipe 110 welds the upper portion of the upper nozzle 210 of the inner nozzle 200 to the upper opening 112 and the lower end of the diffusion nozzle 230 of the inner nozzle 200 to the lower opening 114. Join the parts by welding.

The coupling of the internal nozzle 200 to the blow pipe 110 uses one method such as arc welding, argon welding, and laser welding.

When the filter bag is replaced or when the blow pipe 110 is dismantled and reinstalled, the blow pipe 110 communicates from the upper opening 112 to the lower opening 114 so that the center of the filter bag center and the blow pipe 110 are separated. It can be installed with the naked eye, so it is very easy to center.

The internal nozzle 200 passes through the injection hole 223 inside the blow pipe 110 and diffuses inside the diffusion nozzle 230 to spray the inside of the filter 105.

When the compressed air passes through the injection hole 223, the internal nozzle 200 sucks air around the dozens of times to the first opening 212 of the upper nozzle 210 due to the coanda effect.

Compressed air flows into the diffusion nozzle 230 through the flow of compressed air flowing from the injection hole 223 and the air flowing from the first opening 212 of the upper nozzle 210 due to the coanda effect. It greatly amplifies and has a stronger exhaustion performance.

When the compressed air passes through the injection hole 223, the internal nozzle 200 sucks high-temperature air around the air from the first opening 212 of the upper nozzle 210 due to the Coanda effect. Since the effect of raising the temperature by about 10 to 20 ℃ can be reduced to a minimum, condensation of the water can be minimized, and damage of the filter 105 from hydrolysis and generation of acid can be reduced as much as possible.

In other words, the temperature inside the dust collector 100 is 130 to 200 ℃, the temperature of the compressed air is 10 to 40 ℃, due to the Coanda effect, the surrounding high from the first opening 212 of the upper nozzle 210 The temperature of the compressed air heated by sucking the air at the temperature is raised to 30 to 60 ℃ to minimize moisture condensation.

Since the internal nozzle 200 is mounted inside the blow pipe 110, the suction differential pressure is not generated during the suction process of the dust collector 100 and generates a coanda effect, such that the first opening 212 of the upper nozzle 210 is formed. The surrounding air is sucked in from and supplies a lot of air into the filter 105.

Since the internal nozzle 200 has a horn structure, when the compressed air passes through the injection hole 223 and the diffusion nozzle 230, the filter 105 is vibrated by the sound wave generation, thereby increasing the cleaning effect.

The diameter of the air nozzle of the blow pipe 110 is increased from 8 to 12 mm in diameter of the existing air nozzle from 36 to 60 mm in diameter of the lower opening 114.

Since the blow pipe 110 has a larger diameter of the lower opening 114, compressed air is evenly injected into the filter 105, so that the blow pipe 110 has an excellent cleaning effect at the top of the filter 105 and prevents damage of the lower portion of the filter 105. It can be minimized.

The blow pipe 110 having the internal nozzle 200 according to the embodiment of the present invention may be used for all pulse jet dust collecting filters, such as a cylindrical general filter bag, a cartridge filter, and a pleated filter bag.

When the air nozzle 12 of the conventional blow pipe 10 is slightly displaced from the center of the filter 14, the compressed air of high pressure is concentrated on the filter 14 and the breakage of the filter 14 occurs frequently.

As shown in FIG. 16, since the diameter of the diffusion nozzle 230 is large, the blow pipe 110 having the internal nozzle 200 of the present invention has a large dispersion effect even when the blow pipe 110 is displaced from the center of the filter 105. ) Breakage does not occur.

5 to 8 and 13 to 16, the upper nozzle 210 is shorter than the diffusion nozzle 230, the injection nozzle 220 of the diameter of the blow pipe 110 It is configured to be located above the center.

9 to 12 and 17, the internal nozzle 200 of another embodiment of the present invention has an upper nozzle 210 longer than the diffusion nozzle 230, and the injection nozzle 220 has a blow pipe. It is configured to be located below the center of the diameter of (110).

The embodiments of the present invention described above are not implemented only by the apparatus and / or method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention, a recording medium on which the program is recorded, and the like. Such implementations may be readily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

[Description of the code]

100: dust collector

101: dust inlet

102: air outlet

103: dust collecting case

104: perforated plate

105: filter

106: air tank

107: diagram valve

110: blow pipe

112: upper opening

114: lower opening

200: internal nozzle

210: upper nozzle

211: nozzle body

212: first opening

213: second opening

220: spray nozzle

221 disc body

222: center hole

223 injection hole

230: diffusion nozzle

231: Diffuse nozzle body

232: first opening

233: second opening

Claims

A dust collecting case 103 having a dust inlet 101 and an air outlet 102, a plurality of filters 105 installed in the dust collecting case 103 to filter dust in the air discharged to the outside; A horizontal blow pipe 110 having a constant length in a horizontal direction having an air nozzle corresponding to each filter 105 is installed inside the dust collecting case 103, and compressed air is supplied from the air nozzle of the blow pipe 110. In the dust collector for spraying the filter 105 to remove the dust stuck to the filter 105,

The blow pipe 110 forms an upper opening 112 by drilling one side of the upper surface, and a lower opening 114 having a larger diameter than the upper opening 112 is formed by drilling one side of the lower surface so that the upper opening is formed. Communication from (112) to the lower opening (114),

The inner side of the blow pipe 110 is coupled to the upper nozzle 210 of the pipe shape penetrating up and down extending from the upper opening 112 in the lower direction, and the open lower surface of the upper nozzle 210 The communicating and open lower surface is coupled to the lower opening 114, the diffusion nozzle 230 of the pipe shape penetrating up and down with a diameter larger than the diameter of the upper nozzle 210, and the upper nozzle 210 A dust collector provided with a plurality of internal nozzles 200 having a plurality of injection holes 223 formed at predetermined intervals between the lower outer edge of the upper edge and the upper outer edge of the diffusion nozzle 230.
The method of claim 1,

The shape of the diffusion nozzle 230 is a dust collector having a tapered shape that becomes narrower toward the upper end from the lower opening (114).
The method of claim 1,

The shape of the upper nozzle 210 is a tapered dust collector is narrowed in diameter toward the lower end from the upper opening (112).
The method of claim 1,

The inner nozzle 200 has a center hole 222 having an open center, and a circular hole formed between the center hole 222 and the outer diameter of the disk hole radially formed at regular intervals. Dust collector is coupled to the injection nozzle 220 is connected to the open upper surface of the diffusion nozzle 230, the lower surface of the upper nozzle 210 is coupled to the center hole (222).
The method of claim 1,

The upper opening 112 formed in the blow pipe 110 represents the outer diameter of the upper surface of the upper nozzle 210, and the lower opening 114 formed in the blow pipe 110 represents the diffusion nozzle 230. Dust collector showing the outer diameter of the lower surface.
The method of claim 1,

The diameter of the upper nozzle 210 is 30 to 50% of the diameter of the diffusion nozzle 230, the diameter of the diffusion nozzle 230 is 50 to 80% of the diameter of the blow pipe (110).
A dust collecting case 103 having a dust inlet 101 and an air outlet 102, a plurality of filters 105 installed in the dust collecting case 103 to filter dust in the air discharged to the outside; A horizontal blow pipe 110 having a constant length in a horizontal direction having an air nozzle corresponding to each filter 105 is installed inside the dust collecting case 103, and compressed air is supplied from the air nozzle of the blow pipe 110. In the dust collector for spraying the filter 105 to remove the dust stuck to the filter 105,

The blow pipe 110 forms an upper opening 112 by drilling one side of the upper surface, and a lower opening 114 having a larger diameter than the upper opening 112 is formed by drilling one side of the lower surface so that the upper opening is formed. Communication from (112) to the lower opening (114),

The inner side of the blow pipe 110 is coupled to the upper nozzle 210 of the pipe shape penetrating up and down extending from the upper opening 112 in the lower direction, and the open lower surface of the upper nozzle 210 The communicating and open lower surface is coupled to the lower opening 114, the diffusion nozzle 230 of the pipe shape penetrating up and down with a diameter larger than the diameter of the upper nozzle 210, and the upper nozzle 210 Between the lower outer edge of the diffusion nozzle 230 and the upper outer edge of the inner nozzle 200 formed with five injection holes 223 at regular intervals are provided at regular intervals,

The shape of the diffusion nozzle 230 is tapered in the tapered form in which the diameter is narrowed toward the upper end from the lower opening 114, the diameter is formed uniformly from the middle portion.
The method of claim 7, wherein

The diameter of the upper nozzle 210 is 30 to 50% of the diameter of the diffusion nozzle 230, the diameter of the diffusion nozzle 230 is 50 to 80% of the diameter of the blow pipe (110).