JPH0523214Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a quantitative supply device for granular objects that can stably supply granular objects at a desired supply amount.

(Prior Art) A rotary feeder that supplies a fixed amount of granular objects has a structure in which blades of a rotating body are arranged in a radial direction, and the granular objects get caught between the blades and the casing. As a conventional technique for preventing this, there is a technique as shown in Japanese Utility Model Application Publication No. 60-168544, in which a flexible blade body is provided with a receding angle to prevent the supplied object from being crushed. However, in this conventional technology, since the shape of the container that stores the supply object is complicated, the metering is not uniform and the supply amount is not uniform because the supply object remains in the space without being discharged when the supply object is discharged. There is a problem that variations occur.

(Problems to be solved by the invention) The invention enables uniform weighing of granular objects, which is a problem with conventional rotary feeders, and prevents granular objects from being caught between the rotating blade and the casing. The purpose is to prevent crushing, ensure that granular objects are discharged when discharging them, and reduce variations in supply amount.

(Means for solving the invention) In order to achieve the above purpose, claim (1) of the invention
The granular material quantitative supply device of the first invention includes: a casing having a supply hole for supplying the granular material and a discharge hole for discharging the granular material; a rotating part that is disposed in and has a lumen that opens at the outer periphery and that transports the weighed granular object; a drive part that rotationally drives the rotating part; and a granular object that is supplied from the supply hole and that weighs and stores the granular object. The measuring member is comprised of an elastic body that elastically holds the cylindrical recesses individually and independently, and a measuring member inserted into the inner cavity of the rotating portion.

(Function) In the first invented device configured as described above, the shape of the recess for storing the granular objects is cylindrical, and if the shape is made simple, the granular objects can be easily stored and discharged. ing. Furthermore, when the granular material is measured and stored from the supply hole into the cylindrical recess of the metering member, the rotating part that inserts the recess into the inner cavity is fitted into the casing, so that the recess is fitted into the casing. Particulate matter may become trapped between the parts and the casing. Even in that case, since the recesses are elastically held individually and independently by elastic bodies, the elastic body deforms according to the bite of each recess, and the recesses each independently have a radius. By changing the position inward, the granular object can be transported while preventing the granular object from being caught. In addition, since the rotating part is fitted into the casing and is rotatably arranged, the deformation of the elastic body during feeding of the granular objects can be maintained until the time of ejection, and when the granular objects are ejected, As mentioned above, the recesses that have moved in response to the bite of the individual recesses are quickly and independently returned to their original positions by the repulsive force of the deformed elastic body, thereby positively and easily removing the granular objects. can be discharged.

(Effects) The first invented device has the above-mentioned effects, so it enables uniform measurement, independently prevents granular objects from being caught in each recess, and prevents crushing. When discharging the object, it is possible to reliably discharge the granular objects independently from each recess, thereby reducing variations in the amount of supply.

(Description of other devices) (Structure) Also, in the second device for quantitatively feeding granular objects as described in claim (2) of the present invention, the recess of the measuring member in the first device is made of an elastic body. It has become a thing of the past.

(Function) In the second devising device configured as described above, in addition to the effects of the first devising device described above, when the granular object is stored from the supply hole into the cylindrical recess,
Even if a granular object gets stuck between the recess and the casing, since the recess itself is made of an elastic material, the recess will flexibly deform, causing the recess to move radially inward or in other directions. By arbitrarily changing the position within a certain range as necessary, it is possible to convey the granular object while avoiding getting caught or crushed.

(Effects) The second devised device has the above-mentioned effects, so in addition to the effects of the first devised device described above, the recess can be fixed inward in the radial direction or in any other direction as necessary. By changing the position within the range of , it is possible to more effectively prevent granular objects from getting caught.

(Example) A first example of the present invention will be described using FIGS. 1, 2, and 3. The first embodiment relates to a granular material quantitative supply device according to the first invention as set forth in claim (1), and is a granular material quantitative feeding device that supplies ammonium chloride particles into a fluidized bed furnace.

As shown in FIGS. 1 and 2, a funnel-shaped hopper 21 at the top of the device is screwed into the casing 10, and ammonium chloride particles 4, which are to be supplied, are contained in the hopper 21. Filled. The average size of the particles is approximately 5 mm in diameter.

The hollow cylindrical casing 10 is shown in FIGS.
As shown in the figure, a portion of the side surface is flat, and is fixed to the installation stand 28 with screws. The casing 10 is provided with a supply hole 3 in the upper part for supplying the particles, and a hopper 21
ammonium chloride particles are supplied,
A discharge hole 5 for discharging the particles is provided at the bottom,
The discharge hole 5 communicates with a feed pipe 22 which communicates with a fluidized bed furnace (not shown). Both end surfaces of the casing 10 are connected to side plates 33, 3 forming the casing via gaskets 32, 34.
5 and is fixed by a plurality of bolt means. Furthermore, bearings 29 and 30 are fitted into the central recesses of the side plates 33 and 35. Rotating axis 2
4 is rotatably supported at both ends by the bearings 29 and 30, and protrudes from a through hole in the center of the side plate 33, and a pulley is attached to this protruding end with a bolt (not shown). 25
is fixed. An O-ring 31 is inserted between the rotating shaft 24 and the opening hole in the center of the side plate 33.
are provided around the area. The rotating part 1 is inserted into one end of the rotating shaft 24 and fixed by a screw 36, and the outer diameter of the rotating part 1 is slightly smaller than the inner diameter of the casing 10 to provide a clearance. The clearance is small enough to prevent particles from getting caught between the casing 10 and the rotating part 1. Further, the rotating portion 1 is provided with a cylindrical inner cavity 12 arranged in the radial direction on the outer circumference. A cylindrical measuring member 2 is slidably fitted into the inner cavity 12, and the measuring member 2
is biased in the outer circumferential direction by a coil spring 7, which is an elastic body. Further, in the measuring member 2, a recess 8 for storing and measuring the particles is formed in a simple cylindrical shape along the radial direction of the rotating part 1, and is bored to open toward the outer circumference. has been done. The recess 8 has a volume suitable for the amount of particles to be measured and supplied, and has a diameter of about 10 mm and a depth of about 8 mm. The coil spring 7 has a spring constant that is soft enough to deform and move the position of the recess 8 toward the center to prevent damage when particles stored in the recess 8 occur. There is.
The electric motor 23 is installed on an installation stand, and a pulley 27 is fixed to its output shaft. Since the pulley 27 and the pulley 25 fixed to the rotating shaft 24 are configured to interlock with each other by a V-belt 26, the rotating part 1 fixed to the rotating shaft 24 is rotationally driven by the electric motor 23. The rotational speed of the rotating section 1 varies depending on the fluidized bed furnace used, but in this embodiment it is approximately 1 rotation per minute, so the amount of ammonium chloride supplied is approximately 0.1 g per minute.
Furthermore, the inside of this device is in an argon gas atmosphere, and the gasket 3 is used to prevent the gas from leaking.
2, 34 and an O-ring 31 are provided, and a pressure regulating valve 6 is provided above the hopper 21 for regulating the atmospheric pressure.

By having the above configuration, this first
In the embodiment, when the particles are stored from the supply hole 3 into the recess 8, the particles are uniformly measured by the cylindrical recess 8 without variation, and is driven and rotated by an electric motor 23. Since the metering member 2 housed in the inner cavity 12 in the rotating part 1 rotates in response, the recess 8 also rotates accordingly. Due to this rotation, the recess 8 is gradually covered by the casing 10, and the particles are accommodated in the recess 8. As shown in FIG. 3, when there are particles 20 that are not completely accommodated in the recess 8 and partially protrude, the recess 8
Just before the edge 1 of the recess 8 is closed by
Particles 20 are sandwiched between 1 and the edge 9 of the casing, and the particles 20 push the measuring member 2 toward the center of the rotating section 1, so that the coil spring contracts by h as shown in FIG. increases by h. This increase in the gap allows the particles 20 to
It is stored in the recess 8 and conveyed without getting caught between the holes 1 and 1 and destroying it. Moreover, since it is a coil spring, even if the measuring member 2 is tilted, the measuring member 2 can be pressed uniformly.

When the recess 8 rotates and reaches the position of the discharge hole 5,
Particles are discharged from the recess 8, and since the recess 8 has a cylindrical shape, it is easy to discharge the particles, and
When the particles 20 are discharged, the force that had been pressing the measuring member 2 is released at once, and the measuring member 2 biased by the coil spring 7 presses against the casing 1.
Since the particles collide with zero and vibrate, the particles stored in the recess 8 can be reliably discharged. Furthermore, since the particles are reliably discharged, there is little variation in the supply amount even if the supply amount is small as in this embodiment. Further, the atmosphere in the apparatus of the first embodiment is an argon gas atmosphere, and gaskets 33 and 34 are provided between the casing 10 and the side plates 33 and 35 to prevent gas leakage. 24 is airtightly sealed by an O-ring 31.

As described above, in the first embodiment, the granular objects are uniformly stored and weighed in the cylindrical recess without variation, the supply amount of the granular objects is stabilized, jamming is prevented, and the granular objects are prevented from being crushed. In addition to ensuring smooth operation of the machine, the particulate matter can be reliably discharged when discharging the particulate matter, and variations in the amount of supply can be reduced.

In addition, the inside of the apparatus is maintained in an argon gas atmosphere to prevent gas leakage, and the pressure of argon gas can be adjusted.

In the first embodiment, the spring is not limited to a coil spring, but may be an elastic body such as a leaf spring, a disc spring, or rubber having a shape corresponding to the shape of the inner cavity 12.

Next, a second embodiment of the present invention is shown in FIG. The second embodiment relates to an apparatus for quantitatively feeding granular objects according to the second invention as set forth in claim (2) of the present invention. FIG. 4 shows only the essential parts of the second embodiment, and the same parts as in the first embodiment are given the same numbers and their explanation will be omitted. The second embodiment is characterized in that the recess 8 and the elastic body 7 are integrally made of a flexible material such as rubber, thereby eliminating the need for the spring means shown in the first embodiment. . The recess of the second embodiment has a cylindrical upper part and a conical bottom, but the size is almost the same as that of the first embodiment, and the outer part of the elastic body constituting the recess is Dimensions: diameter 20mm, height
It is 12mm.

The functions of the second embodiment that are similar to those of the first embodiment will be omitted, and only the unique functions of the second embodiment will be explained. As shown in FIG. 5, when the elastic body 7 rotates and the recess containing the particles is closed by the casing 10, if there are particles such as the particles 20 that partially protrude from the recess 8, the particles 20 Since the recess 8 sandwiched between the edge 11 of the casing and the edge 13 of the recess 8 is made of an elastic material such as rubber, the edge is pushed by the pushing force of the particles 20 as shown in FIG. 5b. The portion 13 and the bottom portion 14 are elastically deformed in a necessary direction depending on the position and amount of the protruding particle, and the particle 20 is accommodated and conveyed into the recess 8 without being caught between the edge portions 11 and 13.

As described above, in the second embodiment, the granular objects are uniformly stored and weighed in the recesses without variation, the supply amount of the granular objects is stabilized, and the granular objects can be placed in any direction of the recesses depending on the state of the granular objects being bitten. The deformation prevents jamming, prevents the crushing of granular objects, and ensures smooth operation of the machine. At the same time, the deformed recesses return to their original shape when ejecting granular objects, ensuring ejection of granular objects. Therefore, it is possible to reduce variations in supply amount.

In addition, in the second embodiment, unlike the first embodiment, the spring means of the measuring member is not required, so the diameter of the rotating member can be reduced accordingly, and the entire apparatus can be made compact.

Further, in the first and second embodiments of the present invention, there is only one recess, but the number and size of the recess can be increased as the amount of granular material supplied increases. Further, the shape of the recess is not limited to a cylinder, but may be a polygon such as a quadrangle or a hexagon.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, Fig. 2 is a cross-sectional view of an embodiment of the present invention, and Fig. 3 a and b are explanations of the action of preventing entanglement in an embodiment of the present invention. figure,
FIG. 4 is a cross-sectional view of a main part of another embodiment of the present invention, and FIGS. 5a and 5b are explanatory diagrams of the jamming prevention effect of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Rotating part, 2... Measuring member, 3... Supply hole, 4... Ammonium chloride particles, 5... Discharge hole, 7
...Coil spring, 8...Recess.

Claims (1)

[Claims for Utility Model Registration] (1) A casing having a supply hole for supplying particulate matter and a discharge hole for discharging particulate matter; a rotating part that transports the weighed granular material and has an inner cavity that opens at the outer periphery; a driving part that rotationally drives the rotating part; and a cylindrical tube that measures and stores the granular material supplied from the supply hole. A granular material that stably supplies measured granular objects, comprising a recess and an elastic body that elastically holds the recess individually and independently, and a measuring member inserted into the inner cavity of the rotating part. Quantitative supply device for objects. (2) The device for quantitatively feeding granular objects according to claim (1), wherein the recess of the measuring member and the elastic body are integrally formed of an elastic material.