JPS62501143A - conveyor equipment - 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] ゛　&几りヱヱ1...Baya Sosho Production T: [-f1f' The present invention is mainly used for transporting or transporting light materials such as film strips. Although it relates to conveyor equipment for transportation, it can of course also be used to transport small pieces. The main pipe is equipped with an injection r sink to suck the driving gas under 11 pressure. It is designed as a equipped ejector.

[Etachidan 3 This allows materials in different forms such as coarse particles, plastic particles, agglomerates, fibers, etc. It is already known that air currents can be used to transport or transport particles within conduits. ing.

Utilizing an ejector to propel an air stream that carries transport materials within a conduit is also already known. If large volumes are required, very large volumes of air The proverb says that the substance that must be moved within the conduit finally reaches the end of the four conduits. At the same time, this large amount of air must be separated and removed from the transport material. In such cases, when the transported material is lightweight or consists of particles of different sizes and , air separation operations pose a serious problem in that they require large amounts of air.

For example, the lighter weight of the transported material generates dust, which can become entangled in eddy currents. There are also problems in transporting the substances in the conduits and subsequently in the equipment used for air separation. The problem is that they are subject to pressures that depend on the flow rate, flow rate, mass transport rate, etc.

Therefore, in such cases, the separated substances are transferred to the separator (in many practical situations the subject to time-varying pressure when released from the That will happen. Naturally, if transport is made from a hot area to a cold area In some cases, using large amounts of air results in wasted energy and heat loss. Ru.

is trying to, to Therefore, the present invention makes it possible to secure the maximum transport amount with the minimum amount of air, and , not only transportation of small pieces, but also long continuous transportation such as film-like pieces and fibers. The purpose of the invention is to provide a conveyor device designed for transporting pieces of material. .

I for This object is achieved by the invention described below.

That is, the present invention provides the conveyor device described in the introduction section, in which the main pipe is has a straight, almost cylindrical part with a smooth interior, and is used to suck in gas. the means having a nozzle located radially outwardly of the main pipe at an opening in the wall of the main pipe; It is characterized by the center line passing through it forming an acute angle with the center line of the main pipe.

In a preferred application of the invention, the nozzle is located in a side pipe whose connection with the main pipe covers the upper pipe opening. and the cutting point between the center line of the nozzle and the center line of the main pipe is on the downstream side of the opening. Oriented to locate.

In one embodiment of the invention, which is particularly easy to manufacture, the side tube in which the nozzle is housed is substantially straight. It has a linear cylindrical shape, and is characterized by the nozzle being coaxial with the side tube.

The discharge velocity from the discharge end of the conveyor device is as low as possible and the material is In order to improve the efficiency of a conveyor device that incorporates has an inlet pipe with approximately the same diameter as the main pipe on the upstream side, and the main pipe is separated from the opening. It is characterized by having an enlarged diameter portion on the downstream side.

The capacity of air to pass through a conveyor device without appreciably reducing transport waste forces To further reduce the In an optimized embodiment of the invention, the nozzle mouth cross-sectional area is approximately 4% of the cross-sectional area of the main pipe, and the angle between the center line of the nozzle and the center line of the main pipe is 20 -25° range. In a more preferred application, the main pipe between the enlarged diameter section and the nozzle The length should be 5 to 8 times the diameter of the main pipe.

Attachment・　-の　1 Features and aspects of the invention will be explained by the following brief description of the drawings and the description based thereon. It will be easier to understand.

In the accompanying drawings, Fig. 1 is a schematic diagram of the conveyor device according to the present invention, and Fig. 2 is a schematic diagram of the conveyor device according to the present invention. FIG.

New page The present invention generally relates to relatively elongated, preferably straight, internally smooth conduits. Longitudinal flow through the conduit using a small flow rate, relatively low pressure, but high velocity jet of air. It is based on the concept of accelerating matter.

Drive injection with a low flow rate but a high flow rate may have a considerable effect on transport running power. Nevertheless, the total air volume passing through the conveyor system is consequently small.

As is clear from FIG. 1, the conveyor device according to the invention conveys the It includes a high pressure fan or compressor 1 connected to the main pipe 3 of the equipment.

The main pipe 3, which is a straight pipe with a smooth interior and an almost cylindrical shape, has an enlarged diameter part 4 on the downstream side of the side pipe 2. Continuing from the enlarged diameter portion 4, a transport pipe 5 having approximately the same diameter as this enlarged diameter end portion is connected. . The length of the transport pipe 5 can be selected arbitrarily and therefore depends on the individual case. can be adapted. The ratio of the diameter of the transport pipe 5 to the diameter of the main pipe 3 is approximately 4:3. The degree is appropriate.

The conveyor device has an inlet pipe 6 with an intake fitting 7 upstream of the main pipe 3. No. In the example shown in Figure 1, intake A7 is the residual amount when producing the plastic film. It is designed to feed film-like strips such as material inside. for that , the intake tool 7 has two rollers used to feed the two wooden film strips 9 into the interior. It has 8. Further, the rollers 8 are configured to have a swivel that creates a relatively high flow velocity between the rollers 8. This intake tool 7 can be It is arranged in the intake device 7 so as to reduce the amount of air passing through.

The inlet pipe 6 should have approximately the same internal diameter as the main pipe 3, and a very powerful throttle should It has been found in practice that it is acceptable for the installation tool 7.

? FIG. 2 is a longitudinal sectional view passing through the main pipe 3 and the side pipe 2 connected thereto. From Figure 2 As is clear, the main pipe 3 is composed of a cylindrical pipe with a completely smooth inner surface. Ru. The main pipe 3 is further downstream of at least the half of the connecting part between the side pipe 2 and the main pipe 3. It has an opening 10 formed so as to be connected to the inner surface of the side tube 2.

A nozzle 11 is disposed inside the side pipe 2. Located in the center and oriented in the axial direction of the side tube 2, the side tube 2 is located along its length as shown in the figure. It has a uniform thickness, which means that there is a chamber or a chamber downstream of the opening 12 of the nozzle 11. is to form a free space, which allows the air jet flow away from the opening 12 to You can freely pass through the wall without colliding with it or being affected by it. In the illustrated embodiment, the nozzle 11 is formed approximately in the shape of a truncated conical funnel; The section or opening 12 is again slightly enlarged and preferably has a conical flange with a top angle of about 30'. It forms a rare. The nozzle 11 is fixedly held on the outer part of the side tube 2 and its The interior of the side tube 2 has a completely smooth transition to the inner surface of the side tube 2, with the aim of optimizing operation. It is desirable to be able to position it in the direction of the potato.

Furthermore, as is clear from FIG. 2, the nozzle 11 is completely outside the cross-sectional area of the main pipe 3. Located on the side. This means that the nozzle 11 itself can transport the substance or This is to avoid disturbing or affecting the passage of air.

Further, the nozzle 11 is connected to the main pipe 3 at the opening 10, and the nozzle 11 is connected to the side pipe 2 at the opening 10. Centrally located. Therefore, the nozzle 11 has a free space formed therein. As a result, not only the wall of the side pipe 2 but also the end of the main pipe 3 defined by the opening 10 ejects an air jet flow that is not influenced to a discernible degree by the tF. As a result, no The jet stream leaving the jet 11 is substantially curved gently along the long direction of the main pipe 3. The free jet flow is concentrated at It is considered to form a flow pattern or flow region of flow velocity.

Preferably, the outlet of the fan 1 is directly connected to the connecting flange of the side pipe 2, as shown in FIG. Connect. This means that the conduit between fan l and nozzle 11 is uniform over its entire length. ・This is because it is thick and linear. This results in very low flow losses. It becomes. Furthermore, the side tube 2 has a larger internal diameter (approximately 350 mm) compared to the nozzle opening 12. %), which also contributes to reducing flow losses. However, the flow rate (already at a fairly high speed at the fan exit) is greatly amplified at the nozzle. It is important that the turbulence that inevitably occurs at the fan outlet is reduced. As the velocity increases, the air jet flow away from the nozzle opening 12 is significantly suppressed and turbulent. It is thought that this will disappear.

According to the conducted test, the center line 13 of the nozzle 11 and the side pipe 2, and the center line 14 of the main pipe 3 It has been found that the angle between sand That is, this angle is in the range of 20' to 25°, and the maximum value of JII's remarkable efficiency is about 2 Obtained at 2°. Even a deviation of just 1 to 2 degrees from this optimum value can significantly reduce efficiency. Ru. If the angle becomes small, the jet stream leaving the nozzle 11 will be directed towards the edge of the opening 10. or the upper wall of the main pipe 3 shown in 2nd Ui4, resulting in considerable turbulence. On the other hand, if the angle becomes large, the jet moves away from the nozzle 11. The flow now impinges on the lower end of the main pipe 3 shown in Figure 2 at a relatively obtuse angle, and also This results in turbulence and scattering of the jet stream.

As mentioned above, the angle between the central axis 13 and the central axis 14 of the side wall 2 and the main pipe 3, respectively, is It should be 22°. The edge located on the downstream side of the opening 10 is the connection area with the main pipe 3. When coincident with the inner surface of the side pipe 2 in the area, the central axis 13,14 of the two trees coincides with the inner surface of the side pipe 2. They intersect each other on the downstream side, more precisely about one-third of the inner diameter of the main pipe 3 or of the side pipe 2. They intersect at a distance of less than half the inner diameter.

The position of the nozzle opening 12 along the central axis 13 of the side tube 2 is very important for the efficiency of the device. Ru. As mentioned above, the entire nozzle 11 is located outside the cross-sectional area of the main pipe 3. The cone angle of the nozzle 11 can be changed, but the opening 1 of the nozzle 11 must be 2 must be located in a plane perpendicular to the central axis 13 and along this axis; The side end located closest to the upper pipe 3 is oriented in the tangential direction of the peripheral outer surface of the main pipe 3. Ru.

The part of the 1-mi pipe 3 located downstream of the open + II O is connected to the flow pattern in the main pipe 3. The length should be at least 5 to 8 times the inner diameter of the main pipe 3 to prevent disturbance. Should.

In one practical optimization of the first embodiment of the subject matter of the invention, the comp. Under the main flow of approximately 1 kg/crn' in the main pipe 1, the cross-sectional area of the mouth of the nozzle 11 is equal to that of the main pipe 3. It is often about 4% of the cross-sectional area of The inner diameter of the main pipe 3 can be set to 76 m. Furthermore, in this example, the center of the two trees 1l13 and 14 are preferably set at 22° as described above. In this embodiment, the side pipe 2 The inner diameter of the main pipe 3 is 6 mm, that is, about 72% of the inner diameter of the main pipe 3. Furthermore, the transport pipe 5 is the main pipe It has a diameter approximately 25-30% larger than the diameter of 3.

In the wooden embodiment, the material thickness of the main pipe 3 is approximately 2ms+, which is the thickness closest to the nozzle opening 12. This is to ensure that the narrow end is located 2 ms outside the inner cross section of the main pipe 3 in the radial direction. Ru.

The position where the plane containing the nozzle opening 12 and the center lines 13 and 14 of the two pipes intersect The distance along the center line 13 of the side tube 2 between the .

The corresponding distance along the center line 14 of the main pipe 3 is 120 mm, and the opening 10 The wing is attached to the center line 14 between the downstream edge of the tree and the point 8 where the center lines 13 and 14 of the two trees intersect. The distance between villages is 24 meters.

・　--Example explanation In the second embodiment of the present invention, the inner diameter of the main pipe is 28zm, and the diameter of the nozzle is determined by the supply pressure. Varies depending on force and required transport capacity. An example of the nozzle diameter is 3.4 mm. It is.

In this embodiment, the nozzle diameter is proportionally smaller than in the previous embodiment; In the example, at a higher pressure, for example, a pressure of 6 to 7 kg/c rrr'. Manipulate.

In the above description, the subject matter of the invention is specifically designed for the transport of film-like strips. However, the necessary intake tools 7 are categorized into ones that correspond to each case. It is correct that it can also be used for the transportation of other types of materials. Those skilled in the art will easily understand this.

The invention is not limited to what is shown in the above description and drawings, but the invention is not limited to what is shown in the above description and drawings, but the invention is Many modifications may be made without departing from the spirit and scope of the invention as described in the scope of the invention. It is Noh.

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Claims (7)

[Claims] 1. Mainly used for transporting lightweight plastic materials such as film strips (9). one main pipe (2, 11) equipped with injection means (2, 11) for sucking gas under pressure. 3), in which the main pipe (3) is The jet has a smooth linear and approximately cylindrical part for sucking gas. A nozzle (11) in which the injection means is located radially outside the main pipe at an opening (10) in the wall of the main pipe. ), and the center line (13) passing through the nozzle makes an acute angle with the center line (14) of the main pipe. A conveyor device characterized by: 2. The nozzle (11) connects to the main pipe (3) through a side pipe ( 2), and also between the center line of the nozzle (13) and the center line of the main pipe (14) characterized in that the cut point between the opening and the opening is positioned downstream of the opening. A gomber conveyor device according to claim 1, characterized in that: 3. The side pipe (2) in which the nozzle is installed has an almost straight cylindrical shape, and the nozzle is the same as the side pipe. The conveyor device according to claim 2, characterized in that the conveyor device is a shaft. 4. The main pipe (3) has an inlet pipe (6) having approximately the same diameter as the main pipe on its upstream side. , and the main pipe has an enlarged diameter portion (4) on the downstream side away from the opening (10). A conveyor device according to any one of claims 1 to 3. 5. A throttle is arranged in the inlet pipe (6), preferably in its intake (7). The conveyor device according to claim 4, characterized in that: 6. The cross-sectional area of the mouth of the nozzle (11) is approximately 4% of the cross-sectional area of the main pipe (3), and the nozzle The angle between the center line (13) of the pipe and the center line (14) of the main pipe is in the range of 20 to 25 degrees. The colloid according to any one of claims 1 to 5, characterized in that conveyor equipment. 7. The length of the main pipe (3) between the enlarged diameter part (4) and the nozzle (11) is Claims 4 to 6, characterized in that the size is 5 to 8 times the diameter. The conveyor device according to any one of the above.