JP2007168347A - Powder feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder feeder which can feed a powder to a kneader device, without scattering the powder to the outside. <P>SOLUTION: This powder feeder has a cylindrical body 1 equipped with an injection section 3 which is opened to the upper side, a sending section 4 which is formed into a gradually narrowed form to the lower section, and bag breaking sections 10 and 11 which are provided between the injection section 3 and the sending section 4. A powdery substance which is packed in a bag is injected from the injection section 3, and is sent from the sending section 4, and the powder is fed to a cylindrical kneading tub of which the upper surface is opened of a mixing-kneading device P by the powder feeder. The powder feeder is equipped with a plurality of spraying nozzles 13, a water feeding section 6, and a lid section 2. In this case, the plurality of the spraying nozzles are attached to the periphery of the sending section 4 while facing downward. The water feeding section has a water feeding pipe 14 which feeds water to the spraying nozzles 13. The lid section is provided in such a manner that the sending section 4 and the spraying nozzles 13 are made to face the inside in such a manner to cover the kneading tub. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a powder supply device for supplying powdery materials such as cement and refractory material to a kneading apparatus such as a mixer.

  Conventionally, as a cement supply device for supplying cement, which is carried in a large bag called a flexible container pack, to a mixer, an upper surface is opened, a lower portion is gradually contracted, and a sharp bag breaking portion is provided in an open portion. A cement storage box body, a screw conveyor that communicates the storage box body and the lead-out portion at the lower end of the storage box body, and a drive device that rotationally drives a screw built in the screw conveyor are known ( For example, see Patent Document 1.)

However, in the conventional cement supply device, the cement derived from the outlet part is supplied to the kneading tank of the mixer by gravity. At that time, the cement is scattered between the outlet part and the mixer, and the scattered cement There was a disadvantage that the working environment was deteriorated by dust.
Utility Model Registration No. 3037145

  This invention makes it the subject to provide the powdery body supply apparatus which enabled supply of a powdery body to a kneading apparatus, without scattering a powdery body outside in view of the above inconvenient point.

  In order to solve the above-described problems, the powder supply device according to the present invention includes an introduction part opened at an upper part, a lead-out part formed in a tapered shape at a lower part, and between the introduction part and the lead-out part. A cylindrical kneading vessel having a cylindrical body provided with a bag breaking portion provided in the bag, introducing a powdery material packed in a bag from the introduction portion and leading out from the lead-out portion, wherein the upper surface of the kneading device is open In the powder supply device for supplying powder to the water supply unit, the water supply unit includes a plurality of spray nozzles attached downward around the lead-out unit, and a water supply pipe for supplying water to the spray nozzle, And a lid portion provided so as to cover the kneading tank with the lead-out portion and the spray nozzle facing inside.

  According to the powdery body supply device of the present invention, mist-like water droplets are sprayed from a plurality of spray nozzles attached downward around the lead-out portion. Thereby, the powdery body supplied from the outlet part to the kneading tank of the kneading apparatus can be mixed with the mist-like water droplets and dropped into the kneading tank according to the flow of the waterdrops, and the floating of the powdery body can be prevented. be able to. In addition, since the lid portion is provided so as to cover the kneading tank of the kneading apparatus, when a part of the powdery body supplied from the outlet section to the kneading tank floats or during the kneading in the kneading apparatus Even when part of the powder is floating, it is possible to prevent the powder from scattering to the outside. Furthermore, since the inside of the lid portion covered with the kneading tank is filled with mist-like water droplets, the suspended powdery body can be absorbed by the mist-like water droplets and quickly dropped into the kneading tank.

  The powder supply device of the present invention includes a suction port facing the inside of the lid, a suction fan connected to the suction port and sucking air to the outside of the lid, and suction by the suction fan And an exhaust means having a filter for purifying the generated air.

  According to the powder supply device of the present invention, the exhaust means sucks the air between the kneading tank and the lid of the kneading device from the suction port facing the inside of the lid, and draws the air by the filter. Purify. Thereby, even when a part of the powdery body supplied from the outlet part to the kneading tank of the kneading apparatus floats or when a part of the powdery body floats during kneading in the kneading apparatus, It is possible to reliably prevent the powdery body from scattering.

  Furthermore, in the powdery body supply apparatus of the present invention, the lid portion has a flange portion located inward along the side wall of the kneading tank when the kneading tank is covered.

  According to the powdery substance supply apparatus of the present invention, the lid portion covering the kneading tank of the kneading apparatus includes the flange portion located inward along the side wall of the kneading tank. As a result, even when mist-like water droplets that have absorbed the suspended powdery body adhere to the lid, the waterdrops drop down into the kneading tank through the buttock. It is possible to prevent leakage to the outside.

  Moreover, the powdery body supply apparatus of this invention WHEREIN: The said water supply part sprays the water quantity according to the weight of the powdery substance introduce | transduced into the said introducing | transducing part from the said spray nozzle.

  According to the powder supply device of the present invention, even when the weight of the powder supplied to the kneading tank of the kneading device is large, the mist sprayed from the spray nozzle according to the weight of the powder By increasing the amount of water droplets, the powdery body can be supplied to the kneading tank without scattering the powdery body. Further, the kneading operation can be simplified by supplying the amount of water necessary for kneading from the spray nozzle.

  Furthermore, in the powdery body supply apparatus according to the present invention, the bag breaking portion is provided so as to protrude radially inward from the bottom cutting blade provided radially in the radial direction of the cylindrical body and having a sharp tip. And a sword-shaped side cutting blade.

  According to the powder supply device of the present invention, when the bag filled with the powder is introduced from the introduction part, the bottom part is broken by the bottom cutting blade and the side part is broken by the side cutting blade. Is done. Thereby, irrespective of the shape of the bag body packed with the powdery body and the way of introduction to the introduction part, the powdery body can be smoothly introduced into the cylindrical body without leaving residual powder in the bag body.

  Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 is a schematic diagram of the powdery body supply device of the present embodiment, and FIG. 2 is a schematic diagram illustrating a state where the water supply unit and the outlet unit of the powdery material supply device of the present embodiment are viewed from below. FIG. 3 is a side view showing a usage state of the powdery body supply device of the present embodiment, and FIG. 4 is a front view showing a state in which the lid is opened in the powdery material supply device of the present embodiment. These are top views which show the state which opened the cover part with the powdery material supply apparatus of this embodiment.

  As shown in FIG. 1, the powder supply device according to the present embodiment includes a cylindrical tube 1 and a lid 2, and the tube 1 has an introduction portion 3 with an upper portion opened and a lower portion. It consists of the derivation | leading-out part 4 formed in the taper shape. The lid portion 2 has an inverted saddle-like shape provided at the tip portion of the lead-out portion 4, and only the front portion is configured to be able to stand up and open via the hinge portion 2a. Inside the lid portion 2, there is a flange portion 5 (see FIG. 4) provided so as to protrude to the inner peripheral position of the outer periphery, and a water supply portion 6 (see FIG. 2) provided at the center portion. When the lid 2 is closed and the upper surface of the kneading apparatus P (see FIG. 3) is covered, the flange 5 is disposed below the upper end of the side wall of the kneading tank along the inner periphery of the kneading tank.

  Further, an exhaust unit 7 connected to the lid unit 2 and an operation panel 8 (see FIG. 3) for controlling the water supply unit 6 and the exhaust unit 7 are provided outside the lid unit 2. The cylinder 1, the lid 2, the water supply unit 6, the exhaust unit 7, and the operation panel 8 are fixed by a frame 9 so as to have a constant height.

  Inside the cylinder 1, bottom cutting blades 10 (see FIGS. 3 and 5) having a sharp tip formed by welding to the cylinder 1 are radially provided. The bottom cutting blade 10 is formed by combining two chevron plate-like blades in a cross-sectional view in a side view. Further, a sword-shaped side cutting blade 11 (see FIGS. 3 and 5) is provided on the inner wall of the cylindrical body 1 so as to protrude from the inner wall. In addition, an object detection sensor 12 (see FIGS. 3 and 5) that detects the presence or absence of an object from a change in infrared rays is provided on the inner wall of the cylindrical body 1.

  As shown in FIG. 2, the water supply unit 6 includes a plurality of spray nozzles 13 and a water supply pipe 14 that supplies water to the spray nozzles 13 so that the spray direction is downward around the tip portion of the lead-out unit 4. It is attached. One end of the water supply pipe 14 is connected to a water pipe or the like via an electromagnetic valve 15 that is integrated with the flow sensor.

  The exhaust means 7 is a suction port 16 opened to face the inside of the lid 2, a filter 18 connected from the suction port 16 through a suction duct 17, a suction fan 20, and exhaust from the suction fan 20. It consists of an exhaust duct 21 to be performed. The filter 18 is installed in the filter box 18a, and is configured to be exchangeable from a handle 18b provided on the side surface of the filter box 18a. The suction fan 20 is supplied with driving power via the operation panel 8.

  The operation panel 8 includes a water supply button 22 for spraying a predetermined amount from the spray nozzle 13, a water supply stop button 23 for stopping spraying, an exhaust button 24 for exhausting by the suction fan 20, and an exhaust stop button 25 for stopping exhaust. And a control unit (not shown). The water supply button 22 and the water supply stop button 23 are connected to the electromagnetic valve 15 connected to the water supply pipe 14 via the control unit, and the water supply amount is adjusted via the electromagnetic valve 15. The amount of water supply can be set according to the weight of the powdery material to be introduced, and is set in advance to a certain value necessary for kneading.

  On the other hand, the exhaust button 24 and the exhaust stop button 25 are configured by switching means for turning on / off the supply of driving power to the suction fan 20 via the control unit. The control unit has a timer function, and after the supply of driving power to the suction fan 20 is turned ON by the exhaust button 24, the supply of driving power to the suction fan 20 is automatically turned OFF after a predetermined time has elapsed. The control unit is connected to the object detection sensor 12 and starts spraying via the electromagnetic valve 15 and exhausting by the suction fan 20 in conjunction with the detection result by the object detection sensor 12.

  Next, the usage method of the powdery body supply apparatus which has the above structure is demonstrated using FIGS.

  First, as shown in FIG. 3, the operator pushes the kneading apparatus P whose upper surface is open to the rear position of the lid portion 2 after opening the front portion of the lid portion 2. Then, the operator closes the front part of the lid 2. Thereby, the collar part 5 of the cover part 2 is arrange | positioned inside the side wall of the kneading tank of the kneading apparatus P, and installation of the kneading apparatus P is completed. Then, the operator rotates the screw S (see FIG. 5) of the kneading apparatus P.

  Next, the operator confirms the weight of the powdery material such as cement or refractory material carried in the bag body Q. After confirming that the weight is a planned weight (for example, 200 kg), the water supply button 22 and the exhaust button 24 of the operation panel 8 are pressed. Thereby, the control part of the operation panel 8 monitors the detection result of the object detection means 12, and waits for introduction of the bag body Q from the introduction part 3.

  Subsequently, the operator lifts the bag body Q using a forklift R or the like and then lowers the bag body Q to the introduction portion 3 of the cylindrical body 1. As a result, the control unit of the operation panel 8 detects the introduction of the bag body Q through the object detection unit 12 and sprays mist-like water droplets from the spray nozzle 13 through the water supply pipe 14, and the suction fan 20. To start evacuation of the inside of the lid 2 covered with the kneading tank of the kneading apparatus P. At the same time, the bottom portion of the bag body Q is broken by the bottom cutting blade 10 and the side portion is broken by the side cutting blade 11, so that the powdery body stored in the bag body Q is introduced into the cylindrical body 1. Is done.

  Thus, the powdery substance introduced into the inside of the cylindrical body 1 descends to the derivation unit 4 according to gravity and is supplied from the derivation unit 4 to the kneading tank of the kneading apparatus P. At this time, as schematically shown in FIG. 4, mist-like water droplets are sprayed downward from the plurality of spray nozzles 13 provided around the outlet portion 4. Thereby, since the powdery body supplied to the kneading tank of the kneading apparatus P from the derivation | leading-out part 4 is mixed with a mist-like water droplet and falls in a kneading tank according to the flow of a waterdrop, it prevents floating of a powdery body. be able to. Moreover, since the inside of the cover part covered with the kneading tank is filled with mist-like water droplets, the suspended powdery body can be absorbed by the mist-like water droplets and quickly dropped into the kneading tank. Furthermore, since the lid portion 1 covering the kneading tank of the kneading apparatus P includes the flange portion 5 positioned inward along the side wall of the kneading tank, the mist-like water droplets that have absorbed the suspended powdery body are covered with the lid portion. Even if it adheres to 2, the water droplets can drop into the kneading tank along the flange 5 and can prevent the water droplets having absorbed the powdery material from leaking to the outside. Furthermore, since the air inside the lid portion 2 covered with the kneading tank of the kneading device P is sucked by the suction fan 20 and the air is purified and exhausted by the filter 18, the kneading device P is discharged from the outlet portion 4. Even when a part of the powdery body supplied to the kneading tank floats, the powdery body can be reliably prevented from scattering to the outside.

  Subsequently, the powdery body supplied from the outlet unit 4 to the kneading tank of the kneading apparatus P is kneaded by the rotation of the screw S of the kneading apparatus P as schematically shown in FIG. While the kneading operation is performed, mist-like water droplets are sprayed from the spray nozzle 13 for a certain period of time, and the air inside the lid portion 2 that covers the kneading tank of the kneading device P is sucked by the suction fan 20. It is sucked and purified. For this reason, even if it is a case where a part of powdery substance floats during the kneading | mixing in the kneading apparatus P, it can prevent reliably that a powdery substance is scattered outside. In addition, since the cover part 2 which covers the kneading tank of the kneading apparatus P includes the flange part 5 positioned inward along the side wall of the kneading tank as described above, the powdery kneaded material is covered with the lid. Even if it adheres to the part 2, the kneaded material drops along the flange 5 and drops into the kneading tank, and the kneaded material does not leak to the outside.

  When a certain amount of water is supplied to the spray nozzle 13, the control unit of the operation panel 8 stops water supply via the electromagnetic valve 15. Thereby, the fixed quantity of water required for kneading | mixing can be performed from the spray nozzle 13, and a kneading | mixing operation | work can be simplified. In addition, after the supply of water to the spray nozzle 13 is finished by the control unit of the operation panel 8, the suction fan 20 is turned off and the exhaust of the power supply for driving is finished after a few minutes. In addition, the operator can perform water injection by operating the water supply button 22 and the water supply stop button 23 of the operation panel 8 according to the kneading state, and can finely adjust the kneading condition.

The schematic diagram of the powdery material supply apparatus of this embodiment. The schematic diagram which shows the state which looked at the water supply part and derivation | leading-out part of the powdery body supply apparatus of this embodiment from the downward direction. The side view which shows the use condition of the powdery body supply apparatus of this embodiment. The front view which shows the state which opened the cover part with the powdery body supply apparatus of this embodiment. The top view which shows the state which opened the cover part with the powdery body supply apparatus of this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cylindrical body, 2 ... Cover part, 3 ... Introducing part, 4 ... Deriving part, 5 ... Gutter part, 6 ... Water supply part, 7 ... Exhaust means, 8 ... Operation panel, 10 ... Bottom cutting blade, 11 ... Side part Cutting blade, 13 ... spray nozzle, 14 ... water supply pipe, 16 ... suction port, 18 ... filter, 20 ... suction fan, P ... kneading device.

Claims (5)

A cylinder having an introduction part opened at an upper part, a lead-out part formed in a tapered shape at a lower part, and a bag breaking part provided between the introduction part and the lead-out part; In the powder supply device for introducing the powdered material packed in a bag from the part and leading out from the lead-out unit, and supplying the powdery material to the cylindrical kneading tank whose upper surface is opened,
A water supply unit having a plurality of spray nozzles attached downward around the lead-out unit, and a water supply pipe for supplying water to the spray nozzle;
A powdery substance supply device comprising: a lid portion provided so as to cover the kneading tank with the lead-out portion and the spray nozzle facing inside.   Exhaust means having an inlet facing the inside of the lid, a suction fan connected to the inlet and sucking air to the outside of the lid, and a filter for purifying the air sucked by the suction fan The powder body supply apparatus according to claim 1, comprising:   3. The powdery body supply device according to claim 1, wherein the lid portion has a flange portion located inward along a side wall of the kneading tank when the kneading tank is covered.   The said water supply part sprays the water quantity according to the weight of the powdery substance introduce | transduced into the said introducing | transducing part from the said spray nozzle, The powdery substance supply apparatus of Claim 1, 2, or 3 characterized by the above-mentioned.   The bag breaking portion includes a bottom cutting blade that is provided radially in the radial direction of the cylindrical body, and a sword-shaped side cutting blade that protrudes inward from the inner wall of the cylindrical body. The powdery substance supply apparatus according to claim 1, 2, 3 or 4.

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