JPS62285811A - Zinc oxide supply device - Google Patents

Abstract

PURPOSE:To make it possible to unmannedly supply Zinc oxide, by arranging a jacket provided with a heat insulating means in the outer peripheral section of a screw conveyer, and by jetting air from the lower side section of the conveyer through the jacket. CONSTITUTION:Zinc oxide is discharged into the introduction port of a screw conveyer 40 from an opened container bag W which is pushed upward successively at four corners thereof by a receiving bed 13. The inside of a jacket 44 is heated by steam passing therethrough while air at a constant pressure is jetted from the lower section of the screw conveyer 40. When zinc oxide is conveyed by the screw conveyer 40 successively. the zinc oxide is successively dried on the way by the heating means while it is blown up by air jetted from the lower section of the screw conveyer 40 before it is transferred into a material tank 20.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to a zinc oxide feeding device used in pharmaceutical manufacturers, feed manufacturers, tire manufacturers, etc. The present invention relates to a zinc white supply device that can efficiently and automatically supply zinc white without using a large space.

[Prior art]

In general, zinc white (zinc oxide: Zn0) is easily destroyed,
Due to its tendency to form bridges and stick together, various devices have been proposed for supplying zinc white, but no standardized device has been developed yet.

Conventional methods for supplying zinc white include transporting approximately 20 kg of paper bags filled with zinc white to the top of the raw material tank and manually opening the bag using a cutter, etc.;
A method is used in which a container bag weighing approximately 1,000 kg is placed on a raw material tank, and a bag opening machine is used to open the bag and supply zinc white to the raw material tank.

In addition, methods for supplying zinc white from the supply receiving hopper to the raw material tank include (1) a pneumatic transport method in which the supply receiving hopper and the raw material tank are connected by a conveying vibrate line and the zinc white is supplied via a blower, cyclone, etc.; (2) A one-sided belt conveyor system in which the supply receiving hopper and raw material tank are supplied by a low-angle belt conveyor; (3) The supply receiving hopper and raw material tank are supplied by a horizontally arranged screw conveyor. One type of screw conveyor (4) is known, and the other is a one type bucket conveyor (4) in which a supply/reception hopper and a raw material tank are supplied by combining a belt conveyor and a packet conveyor.

However, although the pneumatic conveyance method mentioned above (11) has a simple structure and is not limited by the location of raw material supply and can be manufactured at a lower cost than other methods, it is prone to adhesion of zinc oxide on the conveyance line, making automation and Unmanned operation is extremely difficult, and there is also the problem that equipment costs are required to treat zinc oxide scattering.

In addition, in the one-way belt conveyor system (2) above, if the conveyor angle is increased, zinc oxide may adhere, form bridges, or scatter, so there is a limit to the conveyor angle and a large space is required. Moreover, there is a problem in that maintenance costs are incurred for parts of the conveyor due to the scattering of zinc white.

In addition, in the case of the one-way screw conveyor (3) above, the reliability of the equipment is higher than other systems, and the equipment is simple, but the supply port is located in a high place, making it difficult to handle. There is a problem.

Further, in the case of the one-type brush conveyor described in (4) above, it is also used as a carbon supply device, etc., but it has the disadvantage of requiring a large number of equipment parts and being expensive, and is not easy to maintain. The problem is that running costs are higher than other methods.

In any case, it has been difficult to automatically and efficiently supply zinc white using conventional methods. Therefore, the aim is to develop a zinc white feeding device that effectively incorporates the properties of zinc white and can efficiently supply zinc white to the next process without requiring a large space and by being unmanned and automated. This is what we provide.

Another object of the present invention is to provide a zinc white supply device that can efficiently discharge and supply zinc white from a container hack containing zinc white to a receiving hopper.

[Structure of the invention]

In order to achieve the above object, the present invention connects a zinc oxide receiving means and a raw material tank by a screw conveyor having a certain inclination angle, and arranges a jacket equipped with a heat insulating means on the outer periphery of the screw conveyor. The gist of the present invention is that air is blown out from the lower side of the screw conveyor through a jacket.

In addition, the present invention connects the zinc oxide receiving means and the raw material tank with a screw conveyor having a constant inclination angle,
The gist is that the zinc oxide receiving means is composed of a supply receiving hopper connected to a screw container, and a receiving frame disposed around the supply opening of the supply receiving hopper and supporting the vicinity of the discharge part of the container bag. It is something to do.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

FIG. 1 shows a side view of a zinc white supply device 1 embodying the present invention, and this zinc white supply device 1 includes a zinc white receiving means 10 and a raw material tank, as shown in FIGS. 1 and 2. 20
and are connected by a screw conveyor 40 having a constant inclination angle (in the range of 30 degrees to 60 degrees in this embodiment).

As shown in FIGS. 1 and 5, the zinc oxide receiving means 10 is provided at a supply receiving hopper 11 connected to an input port 41 of a screw container 40 and at a peripheral edge 12 of the supply port of this supply receiving hopper 11. The supply receiving hopper 11 is supported by a mounting frame 16 movably mounted on a guide rail 14, and the supply receiving hopper 11 is is provided with a hammering device 17 and a gate 18.

The hammering device 17 includes a supply receiving hopper 11
In order to prevent zinc white from adhering to the zinc white or forming a bridge, the device vibrates the supply receiving hopper 11 during the supply of zinc white. It is electrically connected to a provided level meter (not shown) to control the supply amount of zinc white.

Further, the receiving frame 13 that supports the vicinity G of the discharge part of the container bag W is composed of four pipes with curved tips, and is designed to push up the vicinity G of the discharge part of the container bag W, that is, the four corners of the discharge port from below. It is arranged.

Next, the screw conveyor 40 is attached at a fixed angle of inclination (in the range of 30 degrees to 60 degrees in this embodiment) with respect to the support frame 42 as described above, and a As shown in FIGS. 3 and 4, a jacket 44 having a semicircular arc-shaped double pipe structure is provided, and is provided with a heat retaining means 43. Inside this jacket 44, zinc white (not shown) is supplied. ) is configured to allow steam to flow therethrough, and each jacket 44 is provided with a steam supply port 45 and a steam discharge port 46.

Note that the heat retaining means 43 is not limited to steam as described above, and may be electrically heated.

In addition, each jacket 4 covering the screw conveyor 40
An air outlet 47 is provided at the bottom of the screw conveyor 40 to prevent zinc white from adhering to the screw conveyor 40 and solidifying, and an air outlet 48 is provided on the opposite side of the air outlet 47. It is being

As shown in FIGS. 6 and 7, a drive mechanism 51 for rotating the screw shaft 50 is disposed at the discharge port 49 of the screw conveyor 40, and this drive mechanism 51 is connected to a motor for driving the screw shaft 50. 52, a belt 53, a drive pulley 54, etc., and is configured to rotate the screw shaft 50 at a constant rotation speed and supply a constant amount of zinc white (2 tons in this embodiment).

Note that FIG. 7 shows the rotation direction of the screw shaft 50.

Next, as shown in FIGS. 1 and 2, the structure of the raw material tank 20 is such that a hopper 31 is provided on a concave pedestal 21 facing the outlet 49 of the screw conveyor 40. A canvas sheet 32 and a dust collecting nozzle 33 are disposed at the upper end of the hopper 31, and a level meter (not shown) is attached to the side surface of the hopper 31.

In the level meter, the raw material tank 20 is connected to the outlet of the hopper 31.

Next, to explain the operation, the container bag W is suspended by the transfer means and is placed on four pipes with curved tips of the pedestal 13 that receive G near the discharge part as shown in FIG. Then, when the opening of the container bag W is opened, the zinc white is discharged into the input port 41 of the screw conveyor 40 with the four corners pushed up from below by the receiving rack 13 one after another.

On the other hand, the screw conveyor 40 is rotated at a constant speed by a drive mechanism 51, and the jacket 44
There is a heat insulating means 43 for keeping and drying the supplied zinc white, that is, a jacket 4 by which steam is circulated.
The inside of the screw conveyor 40 is heated, and air at a constant pressure is blown out from the lower part of the screw conveyor 40.

In this state, when the zinc white is sequentially conveyed by the screw conveyor 40, the zinc white is sequentially dried by the heat retaining means 43 and blown upward by the air jetted from the bottom i of the screw conveyor 40. While being raised, it is transported to the raw material tank 20 side.

As a result, even during periods of high humidity such as the rainy season, zinc white can be conveyed smoothly and efficiently without solidifying or adhering to the screw conveyor 40 and forming bridges, and furthermore, zinc white can be automatically supplied. It can be done.

〔Effect of the invention〕

As described above, this invention connects the zinc oxide receiving means and the raw material tank by a screw conveyor with a constant inclination angle, and arranges a jacket equipped with a heat insulation means on the outer periphery of the screw conveyor, Since the screw conveyor is constructed so that air is blown out from the lower side of the screw conveyor through the jacket, zinc white can be supplied unattended and automatically, and the screw conveyor is also provided with heat retention means and means for blowing out air. This method effectively prevents solidification and bridging of zinc white, and since the device is simple and does not need to be bulky, it does not need to take up a large space, can be manufactured at low cost, and has the advantage of good maintainability.

In addition, since the zinc oxide receiving means is composed of a supply receiving hopper connected to the screw conveyor and a receiving frame disposed around the supply opening of the supply receiving hopper and supporting the vicinity of the discharge part of the container bag, It has the effect of efficiently discharging zinc white.

[Brief explanation of drawings]

Fig. 1 is a side view of the zinc white supply device embodying the present invention, Fig. 2 is a side view of the raw material tank, and Fig. 3 is the
■A sectional view taken in the direction of arrows, Fig. 4 is a sectional view taken in the direction of the IV-IV arrow in Fig. 1, Fig. 5 is a plan view of the opening of the supply and receiving hopper, and Figs. 6 and 7 are views of the drive mechanism of the screw conveyor. It is a configuration explanatory diagram. 1... Zinc white supply device, 10... Zinc white receiving means,
11... Supply receiving hopper, 13... Receiving frame, 2
0... Raw material tank, 40... Screw conveyor, 43... Heat retention means, 44... Jacket, 47... Air outlet, W... Container hack, G... Container bag discharge Near the department.

Claims (1)

[Claims] 1. The zinc oxide receiving means and the raw material tank are connected by a screw conveyor having a certain inclination angle, and a jacket equipped with a heat insulation means is disposed around the outer periphery of the screw conveyor, A zinc white supply device characterized in that it is configured to blow out air from the lower side of the screw conveyor through a jacket. 2. A supply receiving hopper which connects the zinc oxide receiving means and the raw material tank with a screw conveyor having a constant inclination angle, and connects the zinc oxide receiving means to the screw conveyor, and a supply opening periphery of this supply receiving hopper. What is claimed is: 1. A zinc oxide supply device comprising: a receiving pedestal for supporting the vicinity of a discharge portion of a container bag disposed in a container bag;