JP4670036B2 - Coupler for portable powder container - Google Patents

Description

The present invention is a coupler for discharging a granular material stored in a movable closed container to a connection destination facility. If a female mold is connected to a container outlet, it is joined to a male mold at a place of use. Coupler that can be supplied with carrier gas such as air and can continuously and quantitatively discharge the granular material stored in a sealed container, and does not cause leakage of granular material during desorption About.

A screw feeder, a vibration feeder, a suction nozzle, etc. are used to quantitatively convey the granular material stored in a hopper, etc., all of which depend greatly on the fluidity of the granular material. Therefore, it is difficult to smoothly flow the granular material, the discharge amount varies, and it is difficult to ensure the quantitative discharge property.

For this reason, the carrier gas is blown into the stored granular material, the granular material is fluidized, and a part of the particles ejected from the fluidized bed are collected by a probe installed at the upper part of the layer and discharged to the subsequent process. A layer type quantitative supply device is known, and the tip position of the probe can be moved up and down in order to change the particle discharge amount (FIG. 1).

However, in any of the above cases, filling by transfer from a transport tank or the like is premised. Therefore, when using it for hygroscopic, reactive, and other granular samples to be stored separately from the outside However, special operations have been required for purging and the like.

In addition, as a powder discharge method that dissociates powder material with high cohesiveness into primary particles or a size close to this and discharges it to the next process while maintaining high quantitativeness, a swirling flow is applied to the powder material. There is a method of ejecting the accompanying air and sucking and conveying the dispersed powder material together with the air. (For example, Patent Document 1)

JP 2004-142928 A

However, there is no method for transferring a container filled with powder in advance to a place of use and then exchanging the container for each container and discharging the filled powder in a fixed amount.

Unlike the conventional powder quantitative discharge device, the present invention is carried to a place where the granular material stored in a movable sealed container is supplied, and only the transfer gas supplied from the connection destination facility is used. This is a coupler for partially fluidizing powder particles and continuously discharging the powder particles together with the carrier gas to the connected equipment.

The energy consumed by the gas flowing through the space overcoming the airflow resistance is called pressure loss, but in order for the powder to flow like a fluid, the carrier gas is supplied to the fixed layer of the stored powder and the flow rate is reduced. As it increases, it begins to fluidize the powder. Furthermore, in order to increase the flow rate and the powder becomes a fluidized bed, a state must be created in which the pressure loss of the bed is equal to the weight of the powder per unit area in the bed. For this reason, it is a condition that the pressure loss of the fixed bed and fluidized bed of the granular material, the fluidization start speed, the final speed of the granular material, and the temporal change rate thereof can be controlled within a certain range.

There are no known simple couplers for the purpose of quantitative discharge of granular materials, such as the present invention, and an air discharge pipe from an air pump or a compressor and a granular discharge pipe formed with a slit are provided. When combined with the device that can be connected to the coupler of the invention, it is possible to develop a new market using portable products in which powder particles are made into cartridges.

The preferred shape of the coupler of the present invention includes an elongated cylindrical shape, a conical shape, a polygonal column shape, a polygonal pyramid shape, etc., but is not particularly limited as long as the object of the present invention can be achieved. When the coupler stands on a horizontal plane, a joint (10), for example, a thread, is formed inside the upper end, and a porous plate (20) is attached to the inside of the coupler, preferably in the center. ing. The porous plate is preferably mounted horizontally with the upper end of the coupler, and has an opening (30) in the center and a valve attached to the tip of a spring fixed to one end of the upper surface of the porous plate. (40) closes and closes the opening so as to form an openable / closable sealed body, even when the female coupler (F) is connected to the container mouth, PW) will not leak. The lower end of the coupler is a coupler for a portable powder container having a sealed structure to which the powder discharge pipe (P1) and the carrier gas pipe (P2) can be joined. The size of the portable powder container Can be applied to large containers such as silos due to the size of cigarette cases. After the coupler is joined to the container, the stored powder can be connected to the carrier gas (G) at any location as long as air or any other carrier gas can be supplied by an air pump or compressor. It is a coupler that can be discharged quantitatively to equipment. The coupler is a female coupler (F) composed of a junction with a container and a porous plate (20), and the female coupler (F) in which the carrier gas and the granular material discharge pipe (P1) are integrated. If the male coupler (M) is a female coupler / male split coupler that is tightly bonded to the cable, the female coupler is installed at the factory before shipment, shipped, and connected directly to the male coupler for use. It can also be set as a form to do.

The detailed configuration and usage of the coupler of the present invention will be described by taking a split coupler as an example for a female type and a male type.
(1) Fill the portable granular container (C) with the granular material, and after filling, the female coupler (F) of the present invention is joined to the mouth of the container. The connecting part (10) of the female coupler for portable powder container according to the present invention has an optimum method that can be closely connected to the size and application of the container, such as a screw type, a flange type, a clamp type, or a weld type. You can choose. (Figure 2)

(2) The porous plate (20) which provided the opening part (30) inside the female coupler for portable powder container is attached. The porous plate (20) may be reinforced with ribs. The opening (30) is fitted with an elastic plastic member or a rubber O-ring. On the container side of the opening, there is a valve for pressing and sealing the opening with an elastic body such as a spring with one end fixed. Installed. An example of a preferred valve is a cone valve (40) that is pressed by a spring. One end of the elastic body is joined and fixed to the surface of the porous plate (20). When the coupler is connected, the space (X) on the container side is sealed. When the cone valve (40) is pushed up from below, the direction of movement or movement may be any direction. When the push-up is stopped, it is necessary to return to the original position.

(3) The other end of the female coupler (F) for portable powder container is a male type consisting of a stored powder discharge pipe (P1) and a transport gas supply pipe (P2). It has a structure that allows couplers to be joined. For example, a circular plate having an opening (50) is in close contact with the center, and a flexible plastic member is joined around the opening (50). When the pipe is joined, the plastic member is Close state. It is preferable to attach a leakage prevention film (60) for preventing leakage during transfer and intrusion of outside air to the outermost part of the female coupler (F). (Figure 3)

(4) A male coupler composed of the granular material discharge pipe (P1) and the transport gas supply pipe (P2) is connected to the female coupler for the portable granular container. The tip of the particulate discharge pipe (P1) is preferably hermetically sealed, and at least one slit (60) having a rectangular window shape, a circular shape, an elliptical shape or the like is formed at a certain distance from the tip. The shape and size of the slit are appropriately determined depending on the physical shape of the granular material (PW) to be conveyed. As the structure of the above-mentioned tube, for example, a double tube having a concentric structure in which the powder discharge pipe (P1) is formed on the inner side and the transfer gas pipe (P2) is formed on the outer side can be used.

(5) In order to invert the portable container and join the male type to the female type, when the tip of the double pipe is inserted into the opening (B), the surface leakage prevention film (70) is shattered and removed. The tube is in contact with the round plate. When the inner granular material discharge pipe (P1) is pushed in, the granular material discharge pipe (P1) contacts the opening (30).

(6) Push the powder discharge pipe (P1) further, push up the valve that presses and closes the opening, and the slit of the pipe crosses the porous plate (20) to enter the space (X) in the bottle Reach. (FIG. 3) At this time, the outer periphery of the granular material discharge pipe (P1) is in close contact with the opening (30). As the porous plate (20), a plurality of mesh layers made of fine lines of metal or plastic, or a porous material made of ceramic, metal, plastic, or a combination thereof having a high porosity. Plates using materials are preferred.

(7) When the supply of the transfer gas (G) is started, the transfer gas (G) flows into the space (Y) of the coupler for the portable powder container, and the flow rate adjustment valve (V) is opened little by little. The carrier gas passes through the porous plate (20), and the carrier gas (G) is injected from the pores of the porous plate (20) of the portable powder container side space (X). It is discharged from the slit (60) of the granular material discharge pipe (P1) one by one. When the flow rate of the carrier gas exceeds a certain level, the jetted carrier gas (G) partially fluidizes the granular material (PW) filled in the coupler only in the vicinity of the coupler, thereby causing the fluidized bed (W) to flow. A part of the fluidized bed is formed and discharged from the slit (60) together with the carrier gas (G). {Figure 4}

(8) In the case of a granular material having a small particle diameter or a large particle diameter that is difficult to flow and poorly entrained with the carrier gas, a diaphragm is attached to the surface of the porous plate (20), It is also possible to vibrate the porous plate (20) to forcibly increase the fluidity (W) of the granular material (PW).

When the present inventors adjust the insertion position of the granular material discharge pipe, make the area in the space (X) of the slit (60) constant, and adjust the flow rate of the carrier gas (G), the granular material It has been found that there is a position where (PW) starts to fluidize, and further, when the flow rate is increased, the granular material forms a stable fluidized bed (W). Furthermore, since the carrier gas is discharged only from the slit (60) under the condition of the present invention in which the upper space is sealed, a part of the granular material is transported from the portion in close contact with the slit (60). It is entrained by the gas and is discharged from the slit (60), but the fluidized bed (W) is constantly replenished from the granular material (PW) of the fixed layer at the top of the container, so the fluidized bed ( W) The size of the region does not change, and if the flow rate of the carrier gas (G) is constant, the discharge amount of the granular material (PW) is also constant, and the granular material linearly increases as the flow rate increases. As a result, the present invention was completed.

The fluidized bed (W) is supported by the carrier gas (G), that is, the drag force of the carrier gas (G) acting on the particles is just balanced with the gravity of the particles, and the pressure loss of the fluidized bed (W) is also a unit area within the layer. The situation where the stable fluidized bed (W) is formed is equal to the particle weight per particle, as shown in (FIG. 4), between the porous plate (20) through which the carrier gas (G) flows out and the slit (60). It is a space part between.

The standard amount of standard air required for transportation is the amount obtained by multiplying the minimum fluidization speed of the target granular material by the area of the porous plate (20). From the flow rate 0 to about twice this standard flow rate. There is a fixed supply area in between.

If the non-adhesive granular material with less blocking and the diameter is within the range of 10 μm to 5 mm, by using the coupler of the present invention and setting the carrier gas amount to the size according to the particle diameter, quantitative discharge can be achieved. Is possible.

Connect the female coupler of the powder container coupler of the present invention to the container storing the powdered coal particles, invert, place the mounting port on the bottom, fill the bottle space with the powdered coal particles, discharge the carrier gas and powder particles After connecting the male mold integrated with the tube, the powder particle discharge tube is pushed up to fix the slit in the space. As a carrier gas, air is conveyed from a compressor, and a partially fluidized state of the granular material is caused to appear inside the bottle while controlling the flow rate with a flow rate adjusting valve. While adjusting and producing the carrier gas flow rate, the carrier gas flow rate and the average flow rate of the pulverized coal particles accompanying the carrier gas in the stationary state of the pulverized coal particles after a certain time are examined.

A fine powder of pulverized coal is filled into a 2 liter empty PET bottle, and the female coupler for portable particle container of the present invention is screwed and fixed to the PET bottle. Invert the plastic bottle and insert a coupler male type consisting of a concentric double pipe with a powder discharge pipe (inner diameter 3 mm) on the inside and a carrier gas discharge pipe on the outside into the opening of the coupler for the portable powder container , Fix. The granular material discharge pipe is pushed up, and is pushed in until the tip reaches the opening of the porous plate and the inner pipe is further stopped. Operate the air pump, adjust the air flow rate with the valve, raise and lower the particulate discharge pipe, and fix the slit position in the space. Measure the flow rate of air supplied and the flow rate of pulverized coal per hour along with air from the inner pipe.

Measures the flow rate of air supplied and the flow rate of pulverized coal discharged from the granular material discharge pipe.



The pulverized coal flows at the tip of the bottle attached with the quantitative discharge coupler for the carrier container, and the flow rate of the pulverized coal accompanying the air increases as the exhaust air flow rate increases, and the relationship increases almost linearly. Is constant, the flow rate of entrained pulverized coal is also constant. (Figure 5)

As another form of the portable particle container coupler of the present invention, the porous plate opening (30) of the female coupler as shown in FIG. 6 and FIG. Sealed with strong chrysanthemum cracking rubber, and the male coupler (F) in which the carrier gas pipe (P2) and the granular material discharge pipe (P1) are integrated is fitted and adhered to the female coupler (M). The granular material discharge pipe (P1) has one opening (FIG. 6) at the center or a branch, and an opening (30 ′) into which a plurality of pipes can be inserted around the porous plate (20) {FIG. 7}, the tip has a shape such as a prism, cylinder, polygonal column, semi-circle, streamline or polygonal pyramid, and one or more slits (60) are opened in the vicinity of the tip to discharge the granular material. When the pipe (P1) is pushed up, the sealing body (80) is pushed up, the tip part enters the granular material space (X), and the flexible O-ring of the opening part (30) is in close contact with the outer circumference of the pipe. However, it may be a coupler composed of a female coupler (F) and a male coupler (M) having a shape that prevents the powder (PW) from leaking into the carrier gas space (Y). The configuration is not limited to the above as long as the coupler achieves the object.

FIG. 8 shows a fuel supply device attached to a bottle filled with pulverized coal in the coupler of the present invention, and FIG. 9 shows a silo carrier vehicle storing livestock feed, and a coupler of the present invention attached to a silo transported to feed livestock. FIG. 10 shows an example in which a fixed amount of food is discharged to a table, and attached to a reaction tank in a chemical factory and a device for quantitatively adding powder raw materials. Thus, if the coupler for portable powder containers of the present invention is used, there is no trouble in handling the powder, or troubles such as leakage, and the powder is often a troublesome quantitative discharge. Can be made possible.

It is a figure which shows the fixed quantity discharge apparatus of the granular material in one conventional embodiment. It is the figure which filled the portable granular material container with the granular material, and made the female coupler of this invention the cap. It is sectional drawing of the coupler example 1 for portable powder container of this invention. The cross-sectional view of the coupler example 1 for a portable powder container of the present invention shows the flow of the carrier gas and the fluidized bed. It is a graph of the carrier gas flow rate and the average flow rate of discharged coal. FIG. 2 is a cross-sectional view and a structure of two examples of the female / male coupler of the present invention. It is sectional drawing of 3 examples of the female type | mold male type | mold coupler of this invention. It is a figure showing the usage example 1 of this invention. It is a figure showing the usage example 2 of this invention. It is a figure showing the usage example 3 of this invention.

Explanation of symbols

C: Container F: Female coupler M: Male coupler G: Carrier gas PW: Powder V: Flow control valve W: Fluidized bed P1: Powder discharge pipe P2: Carrier gas supply pipe 10: Container junction 20: Porous plate 30: Porous plate opening 40: Valve 50: Carrier gas tube / powder particle conveying tube connection opening 60: Slit 70: Leakage prevention film 80: Sealing means

Claims (5)

A coupler carrying the connections to the portable containers filled with granular material, a porous plate provided with an opening therein mounted, females before Symbol opening by blockade means, being closed The mold coupler and the carrier gas supply pipe and the slidable powder discharge pipe provided with one or more slits are integrally formed, and consist of a male coupler that can be in close contact with the female coupler. after connecting the mold, the powder or granular material discharge pipe Luke puller owns a close slidable outer peripheral portion before Symbol opening. Uses a structure in which thin layers of a network structure made of fine lines of metal or plastic are laminated, or a porous plate made of ceramic, metal, or plastic porous material with a high porosity, or a combination thereof. The coupler according to claim 1 . The coupler according to claim 1 or 2 , wherein the particulate discharge pipe is slidable in the opening provided in the central part or the peripheral part of the porous plate. The opening is flexible and is equipped with a resin or rubber packing with excellent wear resistance, and when the granular material discharge pipe slides, its contact surface is in close contact with the opening. The coupler according to any one of claims 1 to 3 , wherein the space to be sealed is sealed. The coupler according to any one of claims 1 to 4 , wherein the blocking means is a cone valve or chrysanthemum cracked rubber pressed by an elastic body.