JP5467978B2 - HPDC Mist Collector - Google Patents

Description

  The present invention relates to an HPDC mist collector that collects a release agent mist generated in a light metal high pressure casting (HPDC) process.

  Conventionally, in a light metal high pressure casting (HPDC) process, a mold release agent is applied to the surface of a mold before casting in order to facilitate removal of the molded product from the mold. When the casting operation is repeated continuously, the mold temperature increases, and the release agent applied to the surface of the mold evaporates into a mist shape and diffuses around the casting equipment. Since the diffused release agent mist causes contamination of equipment and deterioration of the air environment in the factory, it is necessary to collect the release agent mist.

Therefore, a single casting device is covered with a hood cover, a spot dust collector is connected to a single casting device, a hood is attached to each single casting device, and a centralized dust collector is connected to these casting devices via ducts. Methods such as connection are known.

Further, as described in Patent Document 1, the suction duct is equipped with a suction blower for sucking air mixed with mist to form a blower, and the suction duct is connected to the discharge duct base portion. 2. Description of the Related Art A mist separation and recovery device is known in which an air outlet and a drain outlet connected to an external air supply source are provided on a bottom plate, and a meandering passage composed of a number of baffle plates is formed in a duct.

JP 2003-236323 A

However, methods such as covering a single casting device with a hood cover, connecting a spot dust collector to a single casting device, attaching a hood to each single casting device, and connecting a centralized dust collector via a duct, etc. However, there are many problems such as large investment and maintenance.

In addition, in the mist separation and recovery apparatus described in Patent Document 1, the release agent mist that has been vaporized by being applied to a high-temperature mold surface is reliably collected and recovered as a release agent that is cooled and liquefied. difficult.

  The present invention has been made in view of such problems of the prior art, and an object of the present invention is to recover the vaporized release agent mist generated in the light metal high pressure casting (HPDC) process. Thus, an HPDC mist collector capable of improving the working environment is provided.

In order to solve the above-mentioned problem, the invention according to claim 1 is an HPDC mist collector for recovering a release agent mist generated in a light metal high pressure casting (HPDC) process, wherein the main body of the HPDC mist collector is installed vertically. and the body cover has a rectifier tank release agent mist is arranged to form a gap that rises between the inner surface of the body cover, the release agent mist between the inner surface of the rectifying tank A cylindrical mesh pipe arranged so as to form a descending gap and a mist cooling filter arranged inside the mesh pipe are sucked from the lower part of the main body cover by a fan arranged on the upper part of the main body cover. The released release agent mist flows into the rectifying tank through the gap between the main body cover and the rectifying tank, and then passes through the mesh pipe and is cooled by the mist cooling filter. It is one in which is recovered as liquefied release agent.

The straightening tank includes a cylindrical portion and an inverted conical portion connected to a lower portion of the cylindrical portion, and a recovery port for recovering the liquefied release agent can be provided at the central portion of the inverted conical portion.

  Further, the mist cooling filter is configured by arranging a plurality of umbrella parts composed of a lower umbrella with a hole opposite to an upper umbrella with a hole in a vertical direction, and inserting a rod member into the center of these umbrella parts. Can do.

  Furthermore, the liquefied release agent can be recovered from the lower part of the rectifying tank, and the air sucked together with the release agent mist can be discharged into the atmosphere from the upper part of the main body cover by the fan.

According to the present invention, the vaporized release agent mist generated in the light metal high pressure casting (HPDC) process can be recovered with a simple configuration of about 98%. Further, the vaporized release agent mist can be recovered as a release agent cooled and liquefied. Furthermore, since about 98% of the release agent mist can be recovered, the working environment can be improved.

The perspective view in the state where a part of main part of the HPDC mist collector concerning the present invention was cut Perspective view with a part of the flow straightening tank cut Perspective view with a part of the mesh pipe cut Mist cooling filter perspective view Action explanatory diagram of the mist collector body

  Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the HPDC mist collector according to the present invention includes a mist cover (not shown) for confining the vaporized release agent mist 1 in the cover to prevent the release agent mist 1 from diffusing, and the mist cover. A collection duct (not shown) for guiding the release agent mist 1 trapped in the mist collector body 2 to be described later, a mist collector body 2 for collecting the release agent mist 1 carried by the collection duct, It comprises an exhaust fan 4 that sucks the release agent mist 1 into the mist collector body 2 and releases only the air 3 into the atmosphere. The HPDC mist collector is installed above a casting apparatus (not shown) provided in a light metal high pressure casting (HPDC) process.

The mist collector main body 2 is arranged with a main body cover 5 installed in the vertical direction, a rectifying tank 7 arranged with a gap 6 inside the main body cover 5, and a gap 8 inside the rectifying tank 7. A cylindrical mesh pipe 9 and a mist cooling filter 10 disposed inside the mesh pipe 9.

  The main body cover 5 is provided with a suction port 11 for taking in the release agent mist 1 at the lower part and an exhaust port 12 for discharging the air 3 at the upper part. The release agent mist 1 is sucked from the suction port 11 by the exhaust fan 4 installed above the exhaust port 12, and the air 3 sucked together with the release agent mist 1 from the exhaust port 12 is filtered and released. .

As shown in FIG. 2, the rectifying tank 7 includes a cylindrical portion 14 and an inverted conical portion 15 connected to the lower portion of the cylindrical portion 14, and a liquefied release agent 16 is placed in the central portion of the inverted conical portion 15. A recovery port 17 for recovery is provided. The liquefied release agent 16 falls to the inverted conical portion 15 and is guided to the recovery port 17. Reference numeral 18 denotes a pipe for discharging the liquefied release agent 16 to the outside.

As shown in FIG. 3, the cylindrical mesh pipe 9 includes an upper cylindrical portion 9a and a lower cylindrical portion 9b, and the lower cylindrical portion 9b is formed of a mesh member. The release agent mist 1 formed by the mesh-like member and passing through the lower cylindrical portion 9b is diffused. The mesh pipe 9 is installed with the lower cylindrical portion 9 b placed on the inverted conical portion 15 of the rectifying tank 7.

As shown in FIG. 4, the mist cooling filter 10 includes an umbrella portion 19 including an upper umbrella 19a with a plurality of small-diameter holes 19c and an inverted lower umbrella 19b with a plurality of small-diameter holes 19c. A plurality of vertical portions are arranged at predetermined intervals, and a bar member 20 is inserted into the center of the umbrella portion 19. The release agent mist 1 is cooled and liquefied by ascending the mist cooling filter 10 while contacting the surface of the plurality of umbrella portions 19 and passing through the small-diameter holes 19c of the umbrella portions 19. The mold 16 is obtained.

The operation of the HPDC mist collector according to the present invention configured as described above will be described. The release agent applied to the high-temperature mold surface becomes a vaporized release agent mist 1. Then, as shown in FIG. 5, the vaporized release agent mist 1 is sucked into the mist collector main body 2 from the suction port 11 by the exhaust fan 4.

  Next, the release agent mist 1 that has entered the mist collector main body 2 from the suction port 11 rises in the gap 6 between the main body cover 5 and the rectifying tank 7. Then, the release agent mist 1 passes over the end of the cylindrical portion 14 of the rectifying tank 7, enters the gap 8 between the cylindrical portion 14 and the upper cylindrical portion 9 a of the mesh pipe 9, and descends.

Next, when the release agent mist 1 entering the gap 8 between the cylindrical portion 14 and the upper cylindrical portion 9a and descending reaches the mesh-like lower cylindrical portion 9b, the release agent mist 1 passes through the lower cylindrical portion 9b and enters the mist cooling filter 10. Get in. Then, the mold release agent mist 1 is diffused by passing through the mesh-like lower cylindrical portion 9b, and rises in the mist cooling filter 10.

Next, the diffusion agent mist 1 that diffuses and rises is in contact with the surface of the umbrella portion 19 that includes a plurality of upper umbrellas 19 a with holes and a lower umbrella 19 b with holes that are opposite to each other, and the umbrella portion 19. The mist cooling filter 10 is lifted while passing through the small-diameter hole 19c to be cooled. Then, the release agent mist 1 is liquefied.

The liquefied release agent 16 falls to the inverted conical portion 15, flows out from the recovery port 17 of the rectifying tank 7 through the pipe 18, and is recovered. On the other hand, the air 3 sucked together with the release agent mist 1 is released into the atmosphere as air 3 filtered from the exhaust port 12 by the exhaust fan 4.

  Thus, about 98% of the vaporized release agent mist 1 generated in the light metal high pressure casting (HPDC) process is recovered. The vaporized release agent mist 1 can be recovered as a liquefied release agent 16. Since about 98% of the release agent mist 1 can be recovered, the working environment in the light metal high pressure casting process can be improved.

ADVANTAGE OF THE INVENTION According to this invention, the HPDC mist collector which can collect | recover the vaporized mold release agent mist which generate | occur | produces in a light metal high pressure casting (HPDC) process with a simple structure reliably, and can aim at the improvement of a working environment can be provided.

DESCRIPTION OF SYMBOLS 1 ... Release agent mist, 2 ... Mist collector main body, 3 ... Air, 4 ... Exhaust fan, 5 ... Body cover, 6, 8 ... Gap, 7 ... Rectification tank, 9 ... Mesh pipe, 9a ... Upper cylindrical part, 9b DESCRIPTION OF SYMBOLS ... Lower cylindrical part, 10 ... Mist cooling filter, 11 ... Suction port, 12 ... Exhaust port, 14 ... Cylindrical part, 15 ... Inverted conical part, 16 ... Liquefied mold release agent, 17 ... Collection port, 19 ... Umbrella part , 19a ... Upper umbrella with a hole, 19b ... Lower umbrella with an inverted hole, 19c ... Small diameter hole.

Claims (4)

An HPDC mist collector for recovering a release agent mist generated in a light metal high pressure casting (HPDC) process, wherein the main body of the HPDC mist collector is disposed between a main body cover installed vertically and an inner surface of the main body cover. A cylindrical shape arranged so as to form a gap in which the release agent mist descends between the rectifying tank arranged so as to form a gap in which the release agent mist rises and the inner surface of the rectifying tank. It has a mesh pipe and a mist cooling filter placed inside this mesh pipe,
The release agent mist sucked from the lower part of the main body cover by the fan arranged at the upper part of the main body cover flows into the rectifying tank through the gap between the main body cover and the rectifying tank, and then passes through the mesh pipe to cool the mist. An HPDC mist collector which is cooled by a filter and collected as a liquefied release agent.   2. The HPDC mist collector according to claim 1, wherein the rectifying tank includes a cylindrical portion and an inverted conical portion connected to a lower portion of the cylindrical portion, and collects the release agent liquefied at a central portion of the inverted conical portion. An HPDC mist collector characterized in that a recovery port is provided.   3. The HPDC mist collector according to claim 1, wherein the mist cooling filter is provided with a plurality of umbrella portions each including a lower umbrella with a hole opposite to an upper umbrella with a hole, and these umbrella parts. An HPDC mist collector characterized in that a bar member is inserted into the center of the structure.   4. The HPDC mist collector according to claim 1, wherein the liquefied release agent is recovered from a lower portion of the rectifying tank, and air sucked together with the release agent mist is supplied to the main body by the fan. An HPDC mist collector which is discharged into the atmosphere from the top of the cover.

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