Cyclone dust collector with improved dust collection efficiency of fine polluted particles

Abstract

The present invention relates to a cyclone dust collector with improved dust collection efficiency for fine particles, comprising: a cyclone housing having a dust collection space formed inside, an air supply pipe formed on one side of the upper portion for air inflow, and a diameter that decreases toward the lower portion; a foreign matter collection unit coupled to the lower portion of the cyclone housing, the interior of which communicates with the dust collection space, and which collects foreign matter contained in the air introduced through the air supply pipe; an air discharge unit installed vertically at the upper center of the cyclone housing, having an exhaust passage formed inside which communicates with the interior of the cyclone housing, and an exhaust port formed at the upper portion for air discharge; and a recirculation unit installed on one side of the upper portion of the cyclone housing, formed to surround one side of the air discharge unit, having a suction port formed on one side communicating with the exhaust passage and a recovery port formed on the other side communicating with the dust collection space, and having a recirculation space formed inside which the suction port and the recovery port are connected, wherein the recirculation unit is installed on one side of the upper portion of the cyclone housing, and the air discharge unit The apparatus comprises a main body formed to surround one side and having the recirculation space formed therein, a suction part installed on one side of the outer surface of the air discharge part corresponding to the recirculation space and having at least one suction port formed on one side communicating with the discharge path, and a recovery part installed on one side of the upper surface of the cyclone housing corresponding to the recirculation space and having at least one recovery port formed on one side communicating with the dust collection space, wherein the suction part has a first protrusion formed on one side protruding inwardly toward the discharge path, and the suction port is formed at a position opposite to the direction of movement of air moving along the discharge path among the first protrusions, and the recovery part has a second protrusion formed protruding downwardly.The present invention provides a cyclone dust collector with improved dust collection efficiency for fine particles, characterized in that the recovery port is formed on one side of the second protrusion, and air recirculated to the dust collection space through the recovery port flows in the same direction as the direction of movement of air moving along the inner wall surface of the cyclone housing. According to the present invention as described above, while being formed with a simple structure, it has the effect of significantly improving dust collection efficiency for fine particles by recirculating fine particles moving separately along the inner wall of the discharge section into the cyclone housing.

Description

Technology Field

[0001] The present invention relates to a cyclone dust collector with improved dust collection efficiency for fine particles, and more specifically, to a cyclone dust collector with improved dust collection efficiency for fine particles that is formed with a simple structure and can significantly improve dust collection efficiency for fine particles by recirculating fine particles moving separately along the inner wall of the discharge section into the cyclone housing. Background Technology

[0003] In general industrial manufacturing sectors, large amounts of particulate pollutants are generated during processes, and dust collectors are used to reduce pollution concentrations before these particulate pollutants are released into the atmosphere.

[0004] In industrial settings, electrostatic precipitators, bag filter precipitators, and cyclone precipitators are widely used; among these, electrostatic precipitators are advantageous for capturing very fine particles and are often used in large-scale processes requiring very strict emission limits.

[0005] In contrast, bag filter and cyclone dust collectors are widely used even in relatively small sizes; bag filter types are primarily used for capturing fine dust, while cyclone types are used for removing relatively larger particles.

[0006] Among these, cyclone dust collectors are widely used across various industries because they have a simple internal structure, are easy to manufacture, and are relatively easy to maintain.

[0007] A conventional cyclone dust collector of this type generally comprises a cyclone housing formed such that its diameter narrows toward the bottom and has an air supply pipe formed on one side of the top for air inflow, a collection unit coupled to the bottom of the cyclone housing, and a discharge unit formed on the top of the cyclone housing. Air introduced into the cyclone housing through the air supply pipe moves downward while rotating strongly along the inner surface of the cyclone housing, and contaminants contained in the air are collected in the collection unit by the centrifugal force generated by the rotating airflow. The air from which contaminants have been removed then swirls in the center of the cyclone housing while moving upward and is discharged to the outside through the discharge unit.

[0008] However, while conventional cyclone dust collectors easily capture large particles in the collection section that generate strong centrifugal force among the pollutants contained in the air, capturing fine particles requires generating a stronger centrifugal force, which necessitates increasing the internal rotational flow velocity or reducing the cyclone radius. This leads to increased internal pressure loss and higher power consumption, resulting in a problem where operating costs increase significantly.

[0009] Accordingly, in cases where the capture of fine particles is important depending on the usage environment, some use a method of installing a bag filter on one side of the inside of the cyclone housing or on one side of the air discharge outlet. However, as an installation structure for installing the bag filter is added, the equipment becomes more complex, and since the bag filter must be replaced periodically, significant maintenance costs are incurred, and management is very cumbersome. Prior art literature

[0011] Korean Registered Patent No. 2554706 'High-efficiency cyclone dust collector' Korean Published Patent No. 2014-0039646 'Bag filter cyclone dust collector' The problem to be solved

[0012] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a cyclone dust collector with improved dust collection efficiency for fine particles, which is formed with a simple structure and can significantly improve dust collection efficiency for fine particles by recirculating fine particles that move separately along the inner wall of the discharge section into the cyclone housing. means of solving the problem

[0014] According to one aspect of the present invention for achieving the above-mentioned purpose, the invention comprises: a cyclone housing having a dust collection space formed inside, an air supply pipe formed on one side of the upper portion for air inflow, and formed such that the diameter decreases toward the lower portion; a foreign matter collection unit coupled to the lower portion of the cyclone housing, with the interior communicating with the dust collection space, and collecting foreign matter contained in the air introduced through the air supply pipe; an air discharge unit installed vertically at the upper center of the cyclone housing, with an exhaust passage formed inside communicating with the interior of the cyclone housing, and an exhaust port formed at the upper portion for air discharge; and a recirculation unit installed on one side of the upper portion of the cyclone housing, formed to surround one side of the air discharge unit, with a suction port formed on one side communicating with the exhaust passage and a recovery port formed on the other side communicating with the dust collection space, and a recirculation space formed inside connecting the suction port and the recovery port. The recirculation unit is installed on one side of the upper portion of the cyclone housing, formed to surround one side of the air discharge unit, and the interior The present invention provides a cyclone dust collector with improved dust collection efficiency for fine particles, comprising: a main body having a recirculation space formed therein; a suction part installed on one side of the outer surface of the air discharge part corresponding to the recirculation space, having at least one suction port formed on one side communicating with the discharge path; and a recovery part installed on one side of the upper surface of the cyclone housing corresponding to the recirculation space, having at least one recovery port formed on one side communicating with the dust collection space, wherein the suction part has a first protrusion formed on one side protruding inwardly toward the discharge path, and the suction port is formed at a position opposite to the direction of movement of air moving along the discharge path, and the recovery part has a second protrusion formed protruding downward, and the recovery port is formed on one side of the second protrusion, so that air recirculating to the dust collection space through the recovery port is introduced in the same direction as the direction of movement of air moving along the inner wall surface of the cyclone housing.

[0015] delete

[0016] delete

[0017] In addition, it is preferable that the above-mentioned reflux unit further includes a flow control unit rotatably coupled to the outer surface of the above-mentioned suction unit in the circumferential direction of the above-mentioned suction unit and having at least one control port formed on one side.

[0018] In addition, the above-mentioned reflux unit may further include a pressure detection unit installed at least one of the interior of the discharge unit or one side of the interior of the cyclone housing corresponding to the recovery port, an opening / closing unit rotatably installed on the upper part of the recovery unit and opening / closing the recovery port while rotating at a certain angle, a rotational force providing means installed on one side of the interior of the main body and having one side connected to the opening / closing unit to provide rotational force, and a control unit that controls the rotational force providing means to shield the recovery port through the opening / closing unit when the pressure detected by the pressure detection unit is lower than a preset reference pressure. Effects of the invention

[0020] According to the present invention as described above, it is possible to form a simple structure while recirculating fine particles that move separately along the inner wall of the discharge section into the cyclone housing, thereby significantly improving the dust collection efficiency for fine particles. Brief explanation of the drawing

[0022] FIG. 1 is a perspective view of a cyclone dust collector with improved fine particle collection efficiency according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a cyclone dust collector with improved fine particle collection efficiency according to an embodiment of the present invention. FIGS. 3a and FIGS. 3b are a perspective view and a plan view, respectively, of a suction part and a flow rate control part according to an embodiment of the present invention. FIGS. 4a and FIGS. 4b are a perspective view and a plan view of a recovery unit according to an embodiment of the present invention, FIG. 5 is a drawing illustrating the state in which air introduced into the cyclone housing according to an embodiment of the present invention is discharged through an outlet. FIG. 6 is a drawing illustrating a state in which air moving along a discharge section according to an embodiment of the present invention is sucked into a suction port. FIG. 7 is a drawing illustrating the state in which air introduced into a recirculation space according to an embodiment of the present invention is re-introduced into the cyclone housing. FIG. 8 is a schematic diagram illustrating a cyclone dust collector with improved fine particle collection efficiency according to another embodiment of the present invention. FIG. 9 is a perspective view illustrating a recovery unit and an opening / closing unit according to another embodiment of the present invention. Specific details for implementing the invention

[0023] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0025] FIG. 1 is a perspective view of a cyclone dust collector with improved fine particle collection efficiency according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a cyclone dust collector with improved fine particle collection efficiency according to an embodiment of the present invention, FIG. 3a and FIG. 3b are a perspective view and a plan view, respectively, of a suction section and a flow rate control section according to an embodiment of the present invention, and FIG. 4a and FIG. 4b are a perspective view and a plan view, respectively, of a recovery section according to an embodiment of the present invention.

[0026] As shown in FIGS. 1 to 4b, a cyclone dust collector (1) with improved fine particle dust collection efficiency according to an embodiment of the present invention comprises a cyclone housing (10), a foreign matter collection unit (20), an air discharge unit (30), and a reflux unit (40).

[0027] The cyclone housing (10) is formed in a roughly cylindrical shape, and a dust collection space (11) is formed inside, with the diameter decreasing towards the bottom, and an air supply pipe (12) through which air is introduced from the outside is formed on the upper side of the outer surface.

[0028] This cyclone housing (10) is a basic form of a cyclone dust collector generally used in various industrial fields, so a detailed description of its configuration is omitted.

[0029] The foreign matter collection unit (20) is configured to collect foreign matter contained in the air introduced into the cyclone housing (10), is coupled to the lower part of the cyclone housing (10), and has a foreign matter collection space (21) formed inside that communicates with the dust collection space (11).

[0030] The air discharge section (30) is formed in a roughly tubular shape, and its lower end penetrates the upper surface of the cyclone housing (10) and is positioned inside the dust collection space (11), more precisely on the upper side of the dust collection space (11), while its upper end extends upward from the cyclone housing (10) and is installed in a vertical direction.

[0031] This air discharge section (30) serves to provide a discharge path (31) so that air introduced into the cyclone housing (10) can be discharged to the outside. Inside, a discharge path (31) is formed that communicates with the dust collection space (11) and through which the air introduced into the cyclone housing (10) moves, and at the top, an outlet (32) is formed for the air to be discharged to the outside.

[0032] The recirculation unit (40) is configured to improve the dust collection efficiency of fine particles by recirculating a portion of the air discharged to the outside through the air discharge unit (30) into the cyclone housing (10), and may be configured to include a main body (41) formed to surround one side of the outer surface of the air discharge unit (30) on the upper side of the cyclone housing (10), a suction unit (42) installed on one side of the outer surface of the air discharge unit (30), a flow rate control unit (43) installed on the outer surface of the suction unit (42), and a recovery unit (44) installed on one side of the upper surface of the cyclone housing (10).

[0033] Here, the main body (41) is formed with an external shape that is approximately cylindrical, and a recirculation path (41a) is formed inside that connects the suction port (42b) and the recovery port (44b), which will be described later. The recirculation path (41a) serves to guide the air introduced through the suction port (42b) to be re-introduced into the cyclone housing (10) through the recovery port (44b).

[0034] The suction part (42) is formed in a ring shape having a diameter that corresponds approximately to the diameter of the discharge part, and is installed on one side of the air discharge part (30) that corresponds to the recirculation path (41a). In addition, the suction part (42) has a first protrusion (42a) formed that protrudes from one side of the outer surface toward the inner direction of the discharge path (31), and a plurality of first protrusions are formed at regular intervals along the circumferential direction.

[0035] Additionally, each first protrusion (42a) has a suction port (42b) formed at a position opposite to the direction of movement of the air moving along the discharge path (31). This is to allow the air moving while swirling to the discharge port (32), which typically moves along the inner wall of the discharge section, to easily flow into the interior of the recirculation path (41a) through the suction port (42b) opposite to it.

[0036] The flow rate control unit (43) is formed in the shape of a ring having a diameter approximately corresponding to the diameter of the suction unit (42), and is installed on the outer surface of the suction unit (42) so as to be rotatable in the circumferential direction of the suction unit (42), and a plurality of control holes are formed at regular intervals on one side of the outer surface corresponding to the first protrusion mentioned above.

[0037] This flow rate control unit (43) plays a role in controlling the amount of air being returned by adjusting the size of the suction port (42b) while rotating. The rotational operation of the flow rate control unit (43) according to the present embodiment can be controlled manually by an operator using a separate handle, or automatically operated by using a power means such as a motor.

[0038] The recovery section (44) is formed in a ring shape having an inner diameter that corresponds approximately to the diameter of the discharge section, and is installed on one side of the upper surface of the cyclone housing (10) corresponding to the recirculation path (41a). Additionally, the recovery section (44) has a second protrusion (44a) formed that protrudes downward from one side of the bottom surface, and a plurality of second protrusions (44a) are formed at regular intervals along the circumferential direction.

[0039] Additionally, a recovery port (44b) is formed on one side of each second protrusion (44a). The recovery port (44b) is formed on one side of the second protrusion (44a) such that air flowing back into the cyclone housing (10) can flow in the same direction as the air flowing down along the inner wall surface of the cyclone housing (10) through the air supply pipe (12), thereby preventing the air flowing into the cyclone from obstructing the flow of air flowing through the air supply pipe (12) and thereby allowing the negative pressure inside the cyclone housing (10) to be maintained.

[0041] FIG. 5 is a diagram illustrating a state in which air introduced into the cyclone housing according to an embodiment of the present invention is discharged through an outlet, FIG. 6 is a diagram illustrating a state in which air moving along an outlet according to an embodiment of the present invention is sucked into an intake port, and FIG. 7 is a diagram illustrating a state in which air introduced into a recirculation path according to an embodiment of the present invention is re-introduced into the cyclone housing.

[0042] The operation of a cyclone dust collector (1) with improved dust collection efficiency for fine particles according to an embodiment of the present invention having such a configuration will be explained with reference to the attached FIGS. 5 to 7 as follows.

[0043] First, when air containing contaminants from the outside is introduced into the interior of the cyclone housing (10) through the air supply pipe (12) at a downward slant to the side, the introduced air moves downward while strongly swirling along the inner wall surface of the cyclone housing (10).

[0044] Due to the shape of the cyclone housing (10) that gradually narrows, the swirling force of the air becomes stronger, and contaminants contained in the air are collected by the wall of the collection section located at the bottom of the cyclone housing (10) by this swirling force, that is, centrifugal force.

[0045] Afterwards, the air moves upward while rotating at the lower center of the cyclone housing (10) and flows into the air discharge section (30).

[0046] At this time, negative pressure is formed inside the cyclone housing (10) due to the swirling flow of air descending along the inner wall surface and the swirling flow of air moving upward from the center. The air introduced into the air discharge section (30) is sucked into the suction port (42b) by the internal negative pressure of the cyclone housing (10) as it moves upward along the inner wall surface of the air discharge section (30).

[0047] At this time, the suction port (42b) is positioned oppositely to the air flow path so that air can be more easily sucked into the suction port (42b), and at this time, the amount of air flowing into the suction port (42b) can be controlled by rotating the flow rate control unit (43) to adjust the size of the suction port (42b).

[0048] Air introduced through the suction port (42b) moves along the recirculation path (41a) toward the recovery section (44) and is reintroduced into the interior of the cyclone housing (10) through the recovery port (44b) formed in the recovery section (44).

[0049] Here, the air flowing into the cyclone housing (10) through the recovery port (44b) flows in the same direction as the air flowing into the cyclone housing (10) through the air supply pipe (12), so as not to obstruct the flow of the air flowing into the cyclone housing (10) through the air supply pipe (12), it rotates and moves downward together with it, undergoing another collection process to remove fine particles.

[0051] FIG. 8 is a schematic diagram illustrating a cyclone dust collector with improved fine particle collection efficiency according to another embodiment of the present invention, and FIG. 9 is a perspective view illustrating a recovery unit and an opening / closing unit according to one embodiment of the present invention.

[0052] The basic configuration of the embodiments of FIGS. 8 and FIG. 9 is the same as that of the embodiments of FIGS. 1 to 7, but is configured to maintain negative pressure inside the cyclone housing (10) while improving the dust collection efficiency of fine particles.

[0053] As illustrated in FIG. 6, the reflux unit (40) according to the present embodiment may be configured to further include a pressure detection unit (45), an opening / closing unit (46), a rotational force providing means (47), and a control unit (48), unlike the previous embodiment.

[0054] The pressure detection unit (45) is installed in either the interior of the air discharge unit (30) or on one side of the interior of the cyclone housing (10) corresponding to the recovery port (44b) and serves to detect the pressure in that area.

[0055] The opening / closing part (46) has a shape corresponding to the recovery part (44) and is rotatably installed on the upper part of the recovery part (44), with each opening (46a) formed at a position corresponding to a plurality of second protrusions (44a). Additionally, a gear may be formed on the outer surface of the opening / closing part (46).

[0056] The rotational force providing means (47) may be a general stepper motor and is geared to the outer surface of the opening / closing part (46) through a power transmission means (D) such as a gear, and by providing rotational force to the opening / closing part (46), it serves to open / close the recovery port (44b) while the opening / closing part (46) rotates at a certain angle.

[0057] The control unit (48) receives the pressure value detected by the pressure detection unit (45) and controls the rotational force providing means (47) according to the applied pressure value to rotate the opening / closing unit (46), thereby opening / closing the recovery port (44b) through the opening / closing unit (46).

[0058] The present embodiment has the characteristic that when the pressure value detected by the pressure detection unit (45) is lower than a preset reference pressure, that is, when the negative pressure inside the cyclone housing (10) becomes higher than the preset reference pressure, the control unit (48) controls the opening / closing unit (46) to block the recovery port (44b), thereby preventing the negative pressure inside the cyclone housing (10) from being released due to the air recirculation operation and maintaining it, so as to greatly improve the fine particle collection efficiency of the cyclone housing (10).

[0059] The rest of the structure is identical to the basic embodiment described above, so the remaining description will be omitted.

[0061] Although the present invention has been described in relation to the preferred embodiments mentioned above, various modifications and variations are possible without departing from the essence and scope of the invention. Accordingly, the appended claims will include such modifications and variations that fall within the essence of the invention. Explanation of the symbols

[0063] 10: Cyclone housing 11: Dust collection space 12: Air supply pipe 20: Foreign matter collection unit 21 : Foreign matter collection space 30 : Air exhaust part 31: Discharge path 32: Discharge outlet 40 : Recirculation section 41 : Main body 41a: Reflux path 42: Suction section 42a: First protrusion 42b: Suction port 43: Flow control unit 43a: Control port 44: Recovery section 44a: Second protrusion 44b : Recovery port 45 : Pressure detection unit 46 : Opening / closing part 46a : Opening 47: Means for providing rotational force 48: Control unit

Claims

Claim 1 A cyclone housing having a dust collection space formed inside, an air supply pipe formed on one side of the upper portion for air inflow, and a diameter formed to decrease toward the lower portion; a foreign matter collection unit coupled to the lower portion of the cyclone housing, with its interior communicating with the dust collection space, for collecting foreign matter contained in the air introduced through the air supply pipe; an air discharge unit installed vertically at the upper center of the cyclone housing, having an exhaust passage formed inside communicating with the interior of the cyclone housing, and an exhaust port formed at the upper portion for air discharge; and a recirculation unit installed on one side of the upper portion of the cyclone housing, formed to surround one side of the air discharge unit, having a suction port formed on one side communicating with the exhaust passage and a recovery port formed on the other side communicating with the dust collection space, and having a recirculation space formed inside connecting the suction port and the recovery port, wherein the recirculation unit is installed on one side of the upper portion of the cyclone housing, formed to surround one side of the air discharge unit, and having the recirculation space formed inside; and the air discharge unit A cyclone dust collector with improved dust collection efficiency for fine particles, comprising: a suction part installed on one side of the outer surface corresponding to the reflux space and having at least one suction port formed on one side that communicates with the discharge path; and a recovery part installed on one side of the upper surface of the cyclone housing corresponding to the reflux space and having at least one recovery port formed on one side that communicates with the dust collection space, wherein the suction part has a first protrusion formed on one side that protrudes inwardly toward the discharge path, and the suction port is formed at a position opposite to the direction of movement of air moving along the discharge path on the first protrusion, and the recovery part has a second protrusion formed downwardly, and the recovery port is formed on one side of the second protrusion so that air refluxing into the dust collection space through the recovery port is introduced in the same direction as the direction of movement of air moving along the inner wall surface of the cyclone housing. Claim 2 delete Claim 3 delete Claim 4 A cyclone dust collector with improved fine particle dust collection efficiency according to claim 1, characterized in that the reflux section further comprises a flow control section rotatably coupled to the outer surface of the suction section in the circumferential direction of the suction section and having at least one control port formed on one side. Claim 5 A cyclone dust collector with improved dust collection efficiency for fine particles according to claim 1, wherein the reflux unit further comprises: a pressure detection unit installed in at least one of the interior of the discharge unit or one side of the interior of the cyclone housing corresponding to the recovery port; an opening / closing unit rotatably installed on the upper part of the recovery unit and opening / closing the recovery port while rotating at a certain angle; a rotational force providing means installed on one side of the interior of the main body, with one side connected to the opening / closing unit to provide rotational force; and a control unit that controls the rotational force providing means to shield the recovery port through the opening / closing unit when the pressure detected by the pressure detection unit is lower than a preset reference pressure.

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