Dust collector

Abstract

The dust removal device and dust box are designed to be airtight and detachable, and a container for both supplying and draining liquids is attached to the dust removal device in a detachable manner to facilitate maintenance work such as liquid supply. [Solution] A dust box is attached to a dust removal device that is airtight and detachable, and is equipped with a suction mechanism that generates negative pressure, a dust capture mechanism that captures dust, and a gas-liquid separation mechanism that removes mist from the airflow. A dual-purpose container for storing supply and discharge liquids is attached to the lower part of the dust removal device in a detachable manner, and the dust removal device and the dual-purpose container for storing supply and discharge liquids are connected by a supply pipe and a discharge pipe.

Description

Technical Field

[0001] The present invention mainly relates to a dust collector for removing fine dust such as dust and powder generated in large quantities at construction sites, cement manufacturing plants, flour mills, etc.

Background Art

[0002] Conventionally, an atomized liquid atomized by the principle of atomization and dust sucked in by a suction air flow generated by an air flow generation mechanism of a dust collector are guided to a dust capture section and agitated to capture the dust in the atomized liquid. At the same time, a liquid film is generated by the atomized liquid sprayed on the inner wall surface of the dust capture section, and the atomized liquid capturing dust and dust is sprayed on the liquid film to perform dust removal, and a dust collector that stores the liquid contaminated by dust removal in a liquid storage section is known. (For example, see Patent Document 1).

[0003] However, since the liquid supply pipe and its liquid storage section are assembled integrally with the dust collector device, it is heavy and the physical burden during cleaning work is large. In addition, since the liquid storage section is incorporated inside and cannot be visually inspected, cleaning is performed blindly, resulting in insufficient cleaning. Also, since the liquid storage section is shallow, the precipitation distance is short and the supernatant liquid is easily contaminated. Moreover, when the supernatant liquid is contaminated, the atomization rate decreases and the dust removal efficiency deteriorates.

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a dust collector that enables easy liquid supply work and cleaning inside the container.

Means for Solving the Problems

[0005] The present invention relates to a dust removal device that includes a suction mechanism that generates negative pressure by an airflow flowing from an intake port to an exhaust port to suck up dust, a dust capture mechanism that captures dust in the airflow in the mist generated using the negative pressure of the suction mechanism, and a gas-liquid separation mechanism that removes the mist contained in the airflow. A dust box is attached to the dust removal device so that it can be sealed and detached, and a dual-purpose container for storing supply and discharge liquids is attached to the lower part of the dust removal device so that it can be detachably attached, and the dust removal device and the dual-purpose container for supply and discharge liquids are connected by a supply pipe and a discharge pipe. [Effects of the Invention]

[0006] The present invention provides a dust removal device equipped with a suction mechanism, a dust capture mechanism, and a gas-liquid separation mechanism, with a dust box that can be detached and sealed to air. A combined supply and drainage container, connected to the lower part of the dust removal device by a supply pipe and a drainage pipe, can be detachably attached. This allows the combined supply and drainage container to be removed from the dust removal device, taken to a cleaning sink or the like for washing, and then supplied with new mist liquid when the mist liquid in the combined supply and drainage container becomes contaminated and requires replacement. Furthermore, by separating the combined supply and drainage container from the dust removal device, it can be made vertically elongated, providing a sufficient sedimentation distance and delaying the contamination of the supernatant liquid. [Best Mode for Carrying Out the Invention]

[0007] Next, a first embodiment of the present invention will be described in detail. The dust removal machine 1 shown in Figures 1 and 2 consists of a dust removal device 2, a dust box 3, and a supply / drainage container 4 for storing mist liquid and dust-contaminated liquid. The dust removal device 2 is partitioned from the dust box 3 by a cylindrical partition wall 5 and is airtight and detachable for separation during maintenance and inspection work. The supply / drainage container 4 is housed inside the dust box 3 and is detachably attached to the bottom of the dust removal device 2. It is connected to the dust removal device 2 by a water seal via a supply pipe 5a and a drain pipe 5b, which will be described later, so it can be separated from the dust removal device 2 during maintenance and inspection work. Furthermore, since the supply / drainage container 4 is installed separately from the dust removal device 2, it can have a deep, elongated shape. Even if drainage liquid is discharged during liquid supply, the dust-containing drainage liquid is heavy and settles at the bottom, so the supernatant liquid is less likely to become contaminated and can be used as mist liquid for a long time, thereby increasing the operating rate of the dust removal machine.

[0008] The dust removal device 2 comprises a suction mechanism 21 that generates an airflow from the intake port 3a of the dust box 3 toward the exhaust port 2b of the head cover 2e described later, a dust capture mechanism 22 that captures dust by mixing it with mist and adsorbs dust and mist containing dust with a liquid film generated on the inner surface of the cover 22a, and a gas-liquid separation mechanism 23 that removes mist from the airflow.

[0009] Furthermore, the dust box 3 is sucked in from the outside through the air intake port 3a by the negative pressure action of the suction mechanism 21. Large dust particles that cannot pass through the internal air intake port 2a fall to the bottom of the dust box 3, while light and small dust particles that can pass through the internal air intake port 2a are sucked into the dust removal device 2.

[0010] Furthermore, the suction mechanism 21 consists of a motor 21a and a two-stage suction fan 21b. The cover 21c, which has an internal exhaust port 21e formed on the suction fan 21b, has a cylindrical body 23b connected to its bottom opening 21d. The lower end opening 23c of the cylindrical body 23b forms an annular opening on the outer edge of the cover 22a of the dust capture mechanism 22. The airflow that flows in from the internal intake port 2a changes to a downward flow at the lower opening 22c, and then bypasses upwards towards the gas-liquid separation mechanism 23. The airflow, slowed down by this bypass, is blown onto the inner surface of the cylindrical body 23b by the blowing fan 23a inside the cylindrical body 23b, where mist is adsorbed and gas-liquid separation occurs.

[0011] A flexible drain pipe 5b is connected in a water-sealed state to the bottom of the cylindrical partition wall 5 of the dust removal device 2, immersed in the mist liquid of the combined supply and drain container 4 in the dust box 3. A flexible supply pipe 5a, connected to the intake pipe 5c of the cylindrical partition wall 5, is loosely inserted into the drain pipe 5b and connected to the dust removal device 2 in a water-sealed state, immersed in the mist liquid of the combined supply and drain container 4. Furthermore, by positioning the supply pipe 5a outside the pipe wall of the drain pipe 5b, the suction port of the supply pipe 5a is positioned above the outlet port of the drain pipe 5b, preventing the supply pipe 5a from drawing in contaminated water discharged from the drain pipe 5b. Additionally, making the supply pipe 5a and drain pipe 5b flexible simplifies handling of the supply pipe 5a and drain pipe 5b when the dust removal device 2 is detached from the dust box 3. The dust removal and capture mechanism 22 draws in the supernatant liquid from the combined liquid supply and drainage container 4 via the liquid supply pipe 5a, atomizes it, and sprays the mist into the cover 22a. The mist is stirred and mixed with dust by the stirring fan 22b, capturing the dust while creating a liquid film on the inner surface of the cover 22a.

[0012] Furthermore, by providing a flange at the tip of the intake pipe 5c, the annular lower end opening 22c is narrowed, ensuring that the airflow within the cover 22a is properly agitated. In addition, the liquid film formed on the inner surface of the cover 22a grows by adsorbing dust and mist containing dust, so the liquid film eventually becomes liquid and flows down to the bottom of the cylindrical partition wall 5 by gravity, and is discharged and stored in the supply and discharge container 4 through the drain pipe 5b.

[0013] If the supernatant liquid in the combined liquid supply and drainage container 4 becomes contaminated due to the dust removal process, the lock 7 is unlocked to separate the dust box 3 and the combined liquid supply and drainage container 4 from the dust removal device 2. Then, the combined liquid supply and drainage container 4 is removed from the dust box 3, the contaminated water soiled with dust is discarded, the inside is cleaned, and then new liquid is supplied into the combined liquid supply and drainage container 4.

[0014] The aforementioned gas-liquid separation mechanism 23 has a blowing fan 23a installed inside the cylindrical body 23b. The centrifugal flow generated inside the cylindrical body 23b by the blowing fan 23a blows mist onto the inner surface of the cylindrical body 23b, creating a liquid film and thus removing the mist from the airflow. The mist adsorbed onto the inner surface eventually turns into a liquid and flows down from the lower end opening 23c of the cylindrical body 23b due to gravity, and is discharged and stored in the supply and discharge container 4 through the drain pipe 5b at the bottom of the cylindrical partition wall 5.

[0015] 7 is a locking mechanism attached to the dust box 3, which is used to separate the dust removal device 2 from the dust box 3 during maintenance and inspection work. When in operation, it locks the dust removal device 2 and the dust box 3 into an airtight seal. 7a is a packing, which maintains airtightness between the dust box 3 and the dust removal device 2.

[0016] In this type of dust removal machine 1, a supply and discharge container 4 filled with mist liquid is housed inside a dust box 3. The supply pipe 5a and discharge pipe 5b, which are connected to the dust removal device 2, are immersed in the mist liquid in the supply and discharge container 4 to create a water seal, and the dust box 3 and dust removal device 2 are airtightly locked together with a lock 7. When the power is turned on and the suction mechanism 21 is activated, a powerful suction airflow is generated by the two-stage suction fan 21b. This suction airflow draws dust into the dust box 3 from the intake port 3a. Larger dust particles fall and accumulate at the bottom of the dust box 3, while finer dust particles are carried by the suction airflow into the dust capture mechanism 22 from the internal intake port 2a of the dust removal device 2. Since the supply pipe 5a is connected to the side of the intake cylinder 5c, which is equipped with the internal intake port 2a, the mist liquid is drawn from the supply and discharge container 4 by the negative pressure effect of the suction airflow, and mist is generated using the principle of atomization.

[0017] The mist inside the dust capture mechanism 22 is agitated and mixed with dust in the airflow, capturing the dust in the airflow. In addition, the liquid film formed on the inner surface of the cover 22a by the mist adsorbs dust and the mist that has captured the dust, becoming liquid, and flows down from the lower end opening 22c of the cover 22a, through the bottom of the cylindrical partition wall 5 and the drain pipe 5b, and is discharged and stored in the supply and discharge container 4.

[0018] Furthermore, mist flowing from the dust removal and capture mechanism 22 into the gas-liquid separation mechanism 23 is blown onto the inner surface of the cylindrical body 23b, forming a liquid film that removes the mist from the airflow. In addition, the mist blown onto the liquid film causes it to become liquid, which then flows down from the lower end opening of the cylindrical body 23b to the bottom of the cylindrical partition wall 5 and is discharged and stored in the supply and discharge container 4 through the drain pipe 5b.

[0019] After performing the dust removal work in this manner and the supernatant liquid in the combined liquid supply and drainage container 4 becomes contaminated with dust, the lock 7 is unlocked to separate the dust box 3 from the dust removal device 2, and the supply pipe 5a and drain pipe 5b are removed from the combined liquid supply and drainage container 4. Next, the combined liquid supply and drainage container 4 is removed from the dust box 3, the contaminated water in the combined liquid supply and drainage container 4 is discarded and the container is cleaned, and then fresh mist liquid is supplied to the combined liquid supply and drainage container 4. At this time, any large dust particles in the dust box 3 are also discarded and cleaned. Once this maintenance work is completed, the combined liquid supply and drainage container 4 is installed in the dust box 3, and the supply pipe 5a and drain pipe 5b of the dust removal device 2 are immersed in the mist liquid in the combined liquid supply and drainage container 4 to seal off the airflow from the dust box 3 so that it does not flow into the dust removal device 2. Then, the dust box 3 is airtightly sealed and locked to the dust removal device 2, and the device can be restarted.

[0020] In the second embodiment shown in Figures 3 and 4, the combined liquid supply and drainage container 4 is not installed inside the dust box 3, but is installed in an open state so as to receive the combined liquid supply and drainage container 4 on the extension of the bottom plate of the dust box 3. By doing so, if the combined liquid supply and drainage container 4 is made transparent, the contamination status of the supernatant liquid for the mist can be visually observed, so efficient dust removal can always be performed. It is also possible to attach and detach the combined liquid supply and drainage container 4 to the bottom of the dust removal device 2 without going through the dust box 3. Note that the second embodiment has the same configuration as the first embodiment except for the configuration in which the combined liquid supply and drainage container 4 is installed in an open state instead of being installed inside the dust box 3 and the configuration in which the liquid supply pipe 5a and the drainage pipe 5b are arranged outside the cylindrical partition wall 5, so a detailed explanation will be omitted. [Brief explanation of the drawing]

[0021] [Figure 1]It is a cross-sectional view showing a first embodiment of the present invention. [Figure 2] It is also a cross-sectional view showing a separated state. [Figure 3] It is a cross-sectional view showing a second embodiment of the present invention. [Figure 4] It is also a cross-sectional view showing a disassembled state.

Explanation of Reference Numerals

[0022] 1 Dust collector 2 Dust removal device 2a Inner air inlet 2e Head cover 2b Exhaust port 21 Suction mechanism 21a Motor 21b Suction fan 21c Cover 21d Bottom opening 21e Inner exhaust port 22 Dust trapping mechanism 22a Cover 22b Stirring fan 22c Lower end opening 23 Gas-liquid separation mechanism 23a Spraying fan 23b Cylindrical body 23c Lower end opening 3 Dust box 3a Air inlet 4 Liquid supply / drainage combined container 5 Cylindrical partition 5a Liquid supply pipe 5b Drain pipe 5c Air intake cylinder 7 Lock 7a Packing

Claims

[Claim 1] A dust removal machine characterized by having a dust box attached to the dust removal device so that it can be airtightly sealed and detached, a dual-purpose container for storing supply and discharge liquids attached to the lower part of the dust removal device so that it can be detachably attached to the lower part of the dust removal device, and the dust removal device and the dual-purpose container for supply and discharge liquids connected by a supply pipe and a discharge pipe.

Images