JPS63500992A - Film coating device using explosive spray - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Film coating device using explosive spray Technical field FIELD OF THE INVENTION The present invention relates to coating equipment technology, and more particularly to an explosive spray coating application equipment.

Background technology Conventionally, a water-cooled pipe or body having an open outlet end and an opposite end to the open outlet end. a gas mixer connected to the body in close proximity to the A measuring instrument, half of which is filled with powder, and the point where the mixed gas is injected and the body. A meter connected to the fuselage between the outlet end and generating an explosion in the form of a spark plug A coating coating device using an explosive jet is known, which is equipped with a device that Lucippa rPetonationnye pokrytia vsachln ostroenli j Machinostroenje Publishing Publlshers) Leningrad, pages 130-131 Figure 73 and Figure 74).

This device injects an explosive gas mixture into the fuselage and causes an explosion accompanied by an explosion wave. It is operated by. This causes the compressed and heated explosion products to exit the fuselage. It is ejected from the mouth end, and a part of it is filled into a sealed container with powder and pressurized there.

When the pressure inside the container decreases, the powder and the decompressed gas are removed from the depressurized shell. Go inside. At the same time, the fuselage is filled with an explosive gas mixture, which is forced to mix with the powder. will be combined. Following the occurrence of an explosion, the cycle described above is repeated as described above. stop The difference is that the explosion products ejected from the cylinder are heated and accelerated powder particles. This is to form a coating. Explosive products entering the scale may also It has particles that easily attach to the walls of the piping that connects it to the body. Parasitic due to this A film forms, but this parasitic film (after approximately 1000 explosions) The powder outlet will be completely closed. This applies to the body of the gas mixer and powder meter. This is generally caused by the mutual longitudinal arrangement of the two. This longitudinal direction Due to the arrangement of the particles, the particles of powder material are ejected towards the open end of the fuselage. The explosion products invade the lower pressure area away from the open end of the cylinder, i.e. Facilitate passage through a sealed container with the powder entering.

It also includes a body having an open outlet end, a gas mixer, a powder material meter, and a body connected to the body. A coating coating device using an explosive jet is known, which is equipped with an explosive generator connected to the For example, U.S. Pat. No. 4,231,518 C1,239-81゜Figure 1, 1980 issue).

In this device, the body is placed horizontally, and the end opposite to the open exit end is filled with powder. A meter is connected (powder is pushed out of the powder meter by nitrogen gas) . In addition, the point of injection of explosive gas is from the connection point of the powder meter to the open end of the fuselage. Somewhat off. Similar to the results previously explained, the explosion products carrying powder were only slightly However, powder needles can penetrate into containers. This is the result of explosion products. This is because the powder will move in the opposite direction to the powder measuring device.

However, the formation of a parasitic film at the powder outlet is likely to occur here as well. ing. This is because the distance from the connection point of the gas mixer to the connection point of the powder measurer is A relatively short and powder-carrying heated explosion product is generated by a low-pressure wave from the open end of the fuselage. This is because the powder reaches the powder outlet faster than it is bundled.

Disclosure of invention The purpose of the present invention is to prevent the formation of a parasitic coating on the piping connecting the body and the powder measuring device. The mutual arrangement of the connection points of the powder material 1 metering device and the gas mixer to the cylindrical body to prevent It is an object of the present invention to provide a coating coating device using explosive spray having a positional relationship.

SUMMARY OF THE INVENTION An object of the invention is to provide a body having an open outlet end, and a body having an end opposite the outlet end. Equipped with a connected meter, a gas mixer and an explosion generating device connected to the fuselage. It is a film coating device with a unique feature that a gas mixer is connected to the center of the body. This is achieved using an explosive spray coating application system.

The passage connecting the gas mixer and the fuselage is arranged tangentially to the cylindrical surface of the fuselage. Preferably.

The fuselage is preferably arranged continuously in the longitudinal direction of the fuselage and partially connected to each other. It has the shape of two members of different diameters that intertwine, and the larger diameter member has a gas mixer located and attached to the outlet end of the fuselage, while The outlet end of the small diameter member is placed aft of the mixer connection point towards the outlet end of the fuselage. It is arranged.

The coating coating device using explosive spray for realizing the present invention has such a configuration. to prevent heated explosion products from entering the powder weigher, thereby prevents the powder material injected from forming a parasitic film on the opening into the fuselage. Therefore, high reliability and long operating period can be obtained.

Brief description of the drawing The invention will be explained in more detail below by means of preferred embodiments in conjunction with the accompanying drawings. Dew.

Figure 1 is a longitudinal cross-sectional view of a film coating device using explosive spray; Figure 2 is a diagram showing a modification of the device having a stepped body, and Figure 3 is the line shown in Figure 2 - ■. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION The coating application device by explosive spray consists of a body 1 with a water cooling jacket 2 having an open outlet end. and a gas mixer 3 connected to the middle part of the fuselage 1 and opposite to the outlet end of the fuselage 1. A powder material meter 4 connected to the side end by a pipe 5 and an explosion generating device In other words, it is composed of a spark plug 6.

Apart from the above-mentioned embodiments, coating application by explosive spraying as shown in FIGS. 2 and 3 is also possible. In a variant of the device, the passage 7 of the gas mixer 3 is tangential to the cylindrical surface of the body 1. It is placed in the opposite direction. Here the fuselage 1 has telescoping members 8 and 8 having different diameters. and 9 are successively arranged. Parts with large diameter Reference numeral 8 denotes a receiving arrangement located on the outlet end side of the body 1 and inserted into the body 1 through an opening 10. It has a gas mixer 3 attached to a pipe 7. Extrusion of member 9 with small diameter The port 11 is located after the connection point of the mixer 3 (after the aperture 10) towards the open outlet end of the body 1. It is located.

The explosive spray coating application device according to FIG. 1 operates as follows.

After the mixer 3 fills the active area below the fuselage 1 with explosive gas, the explosion of the mixture causes a fire. This is caused by a spark crossing the flower plug 6. The explosion wave moves towards the open end of fuselage 1 However, the explosion products also move mostly in the same direction, but partially into the metering tank. Move towards connection point 4.

The shock wave compresses the gas present in the inactive area above the fuselage before the explosion products do. Ru. The shock wave increases the pressure inside the measuring instrument 4, is reflected from the upper part of the fuselage 1, and is reflected from the upper part of the fuselage 1. Interacts with the explosion products moving upward along the active zone and directs the movement of the explosion products. slow down.

After the explosion wave moves towards the open exit end of the fuselage 1, a low pressure wave is generated, which accelerating the explosion products in the active part of the fuselage 1 while moving in the opposite direction to the mouth end; The path of movement of the explosion products in the inactive parts of the fuselage 1 is changed.

Eventually, the gas present within the body 1 begins to move towards the open end of the body 1. body After the pressure drop in 1, a slow process continues, i.e. via pipe 5 to meter 4. The gas and powder material are discharged from and the powder material moves towards the open end of the body 1. , the new explosive gas mixture is inhaled into the fuselage 1.

Most of the powder material moving in the form of a spray inside the fuselage 1 is located at the point where the mixed gas is injected. As it passes, an explosion occurs and the explosion caused by the explosion wave and shock wave mentioned above. The product transfer process is repeated.

However, in this case the explosive products directed to the inactive parts of the fuselage 1 Contains powder particles present at the point of explosion proximate to the point where the mixture gas is introduced. nothing.

This allows the particles to reach the pipe 5 and form a parasitic coating there. this The problem is mainly due to the low pressure determined by the relationship between the lengths of the active and inactive parts of the fuselage 1. Depends on the movement of the wave arrival.

Preferably, the minimum length of the inactive part is not less than 1/3 of the forward length of the fuselage 1. Non Increasing the length of the active portion makes it less likely that parasitic coatings will form. Therefore, non- The maximum length of the active part is determined by a sufficiently high quality coating ~ i.e. this quality increases the length of the inactive part. Determined by the conditions favorable for obtaining the condition, which worsens as the length increases. inactive In general, the longer the length of the moving part, the worse the quality will be because the powder particles will reach the open end of the body 1. This is because it reduces the effective length of the fuselage 1, which is accelerated and heated when moving towards be.

High quality without forming a parasitic film on most of the powder materials being injected The maximum length of the inactive part of the fuselage providing a covering of 1 shall not exceed 2/3 of the total length of the fuselage It has been experimentally established that this is not the case. The middle part of the torso is the length of the torso The part of the body that extends by 1/3 of the cylinder and is located at the same distance from both ends of the cylinder. Ru.

The apparatus shown in FIGS. 2 and 3 is identical to that described by FIG. It is approximately the same as a device having a geometrical relationship. The advantage of this variant is that the gas mixture The injection point or aperture 10, like the meter 4, is prevented from being adversely affected by powder particles. That's true. Since the passage 7 is provided in the tangential direction on the cylindrical surface of the body 1, the mixer 3 The dynamic resistance to mixed gases at the exit end from the can be reduced.

Industrial applicability Explosive spray coating equipment is used in construction machinery, energy engineering, the automotive industry, and tool manufacturing. , and other uses.

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Claims (3)

[Claims] 1. a body (1) having an open outlet end and an end opposite the outlet end on the body (1); a powder material meter (4) connected to the body (1), and a gas mixer (3) connected to the body (1). In coating coating equipment using explosive spray, which is equipped with A device that is exposed to explosive jets characterized by connecting the combiner (3) to the center of the fuselage (1). Film coating equipment. 2. The passage (7) connecting the gas mixer (3) and the body (1) is connected to the cylindrical surface of the body (1). as claimed in claim 1, characterized in that it is cast in a tangential direction to Device. 3. The fuselage (1) is arranged continuously in the longitudinal direction of the fuselage (1) and is mutually separated. It has the shape of two members (8, 9) of different diameters that partially intersect with each other, and has a large straight line. The diameter member (8) is arranged on the outlet end side of the body (1) and is attached to the gas a mixer (3), while a small diameter member (9) connects the gas mixer (3). The point is located behind the point toward the outlet end of the fuselage (1). The device according to item 2 of the scope of demand.