JPH11301855A - Hopper for granule provided with measuring discharger device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hopper for a granule provided with a measuring discharger device improving discharge efficiency by minimizing a time required for measuring of the granule. SOLUTION: A hopper 42 for a granule constitutes a bottom part of the hopper storing the granule in almost V shapes 60a, 60b so as to drop down the granule collected in a central part, a discharge port 60d of almost rectangular shape is formed in the lowermost part thereof, also a measuring discharger device 70, having a shaft member 72 set up rotatably with a horizontal axis serving as the center and a plurality of plate members 74 respectively continued in the axial direction and fixed to a peripheral surface of the shaft member so as to be extended in the radial direction with an equal angular space, is arranged in a position closing this discharge port. An amount of the granule stored between the adjacent plate members 74 is measured and discharged onto a conveyer device 80 downward by rotating the shaft member 72 of the measuring discharger device 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hopper for a granular material having a metering / discharging device capable of measuring and discharging the volume of the granular material from the bottom of the hopper storing various granular materials. . Various types of powders and granules to be used in the present invention include grains, earth and sand, and treated sludge.

[0002]

2. Description of the Related Art First, FIG. 3 shows a hopper for a granular material provided with a conventional typical discharge device. In the granular material hopper 41, the bottom of the hopper main body 50 has a pair of bottom walls 50 so that the granular material gathers at the center and falls.
a, 50a form a substantially V-shape. A substantially rectangular discharge port 50b is formed at the lowermost portion, and the actuator 5 is located at a position that closes the discharge port 50b.
A closing plate member 54 that is reciprocated in the horizontal direction by the second member 2 is disposed. A lower part of the outlet 50b is provided with a cylindrical measuring part 50c which forms a space of a predetermined volume inside. A closing plate member 58 that is reciprocated in the horizontal direction by the actuator 56 is disposed at a position that closes the bottom.

In the method of using the hopper 41 for a granular material provided with such a metering / discharging device, first, an actuator 52 is operated to retract a closing plate member 54. The granular material in the hopper main body 50 is stored so as to fill the inside of the measuring section 50c. Thereafter, the actuator 52 is operated again to close the discharge port 50b with the closing plate member 54. Thereby, the hopper 50
In this state, the granular material is isolated from the measuring unit 50c so as not to fall. In this state, the actuator 56 is operated to pull in the closing plate member 58 to drop the granular material in the measuring unit 50c. After all the particles are discharged from the measuring unit 50c, the actuator 56 is operated to close the bottom of the measuring unit 50c with the closing plate member 58. As a result, one cycle of the measurement of the granular material is completed.

[0004]

In the above-mentioned conventional powder hopper provided with a measuring and discharging device, the upper and lower actuators 52 and 56 are opened and closed to open and close the powder and granules stored in the measuring section 50c. Are sequentially measured and discharged. Therefore, there is a disadvantage that the time required for one discharge is relatively long and the efficiency is low.

If the closing plate member 54 is not sufficiently closed, the so-called flushing outflow occurs, in which the powdery material of the hopper 50 flows out from the bottom of the weighing section 50c without stopping at the measuring section 50c. There were drawbacks that could not be done. An object of the present invention is to solve the above-mentioned conventional problems and to provide a powder / particle hopper provided with a weighing / discharging device with improved discharge efficiency by minimizing the time required for weighing the powder and granules. is there. Another object of the present invention is to provide a hopper for a granular material provided with a weighing / discharging device capable of preventing a flushing outflow and discharging a granular material while always accurately weighing.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a bottom portion of a hopper accommodating a granular material is formed in a substantially V-shape so that the granular material gathers at a central portion and falls, and is formed at a lowermost portion thereof. A shaft member rotatably mounted on a horizontal axis at a position forming a rectangular outlet and closing the outlet, and each of the shaft members is axially continuous and extends in a radial direction. To provide a hopper for powder and granular materials provided with a weighing and discharging device in which weighing and discharging devices having a plurality of plate members fixed to the outer peripheral surface of a shaft member at equal angular intervals are arranged. The granular material in the hopper moves downward while being guided by the substantially V-shaped bottom wall, and enters a space between any one pair of adjacent plate members of the weighing and discharging device from a discharge port formed at the lowermost portion. Is stored. By continuously or intermittently rotating the shaft member, the powder and granular material stored between each pair of plate members,
It turns downward and falls naturally. Also, by arbitrarily changing the rotation speed, the amount of the weighed and discharged granular material can be freely changed.

According to a second aspect of the present invention, in the hopper for a granular material provided with the weighing and discharging device according to the first aspect, the outer periphery of two adjacent plate members adjacent to the discharge port at the bottom of the hopper. It is characterized in that an arc-shaped cross-section closing member for preventing flash outflow having an area capable of covering the surface is provided. As a result, even if the shaft member rotates, at least one plate member serves as a shield for the powder and granular material that is about to flow out from the inside of the hopper, and prevents flushing outflow. This allows
It is possible to discharge the powder while constantly weighing accurately.

[0008] The invention according to claim 3 is the invention according to claim 1 or 2.
Wherein the number of plate members is from 4 to 12. By utilizing the own weight of the granular material stored in the hopper, a predetermined amount of the granular material can be securely stored between each pair of plate members, and at least one sheet of granular material can be stored in the moving path of the granular material. The plate member can be arranged as a shield, so that flushing outflow can be reliably prevented.

The invention described in claim 4 is the first to third aspects of the present invention.
In the hopper for a granular material provided with the weighing and discharging device according to any one of the above, an elastic plate is provided at an end of the plate member so as to be interposed between the plate member and the inner peripheral surface of the closing member. It is characterized by being attached. By closing the gap existing between the distal end of the plate member and the inner peripheral surface of the closing member with the elastic plate, it is possible to more reliably prevent the powder particles from flowing out.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a hopper for powdery or granular materials provided with a measuring and discharging device according to the present invention. FIG. 1 is a longitudinal sectional view of one embodiment of a powder and granular material hopper provided with a measuring and discharging device according to the present invention, and FIG. 2 is a perspective view of the measuring and discharging device used in FIG. The granular material hopper 42 having the weighing and discharging device according to the present invention basically includes a hopper main body 60 and a weighing and discharging device 70 attached to the bottom of the hopper main body 60. I have.

The hopper main body 60 is a rectangular parallelepiped cylindrical body having an open top, and its bottom is substantially V-shaped by a pair of bottom walls 60a and 60b so that the powder and granules gather at the center and fall.
It is shaped like a letter. The bottom walls 60a and 60b have an appropriate angle such that the granules fall to the bottom of the V-shape under their own weight, but the upper granules do not receive too much pressure.
For example, it is preferable to configure so as to have an angle of ± 30-60 degrees with respect to the horizontal. In order to prevent the powdery particles from adhering to the wall surface and not dropping, mechanical vibration can be applied to the wall surface by a vibration generator (not shown). When sludge such as sludge which has a large viscosity and easily adheres to a wall surface is stored in the hopper body 60 and measured by the measuring and discharging device 70, at least along the bottom walls 10a and 10b as shown in FIG. The layer 90 of the inoculant inoculum can be formed. The layer 90 of the inoculum can be put into the hopper body 60 at the same time when the material to be stored in the hopper body 60 is put into the hopper body 60,
The inoculation port (not shown) is provided in the hopper, and the inoculum can be formed by supplying the inoculum into the hopper body 60 through the inoculation port. Thereby, even if the material is highly viscous, the bottom wall 10
This has the advantage that it can be dropped down along a, 10b and can be weighed by the weighing and discharging device 70. The tip of the bottom wall 60a extends to a position lower than the tip of the bottom wall 60b, and a closing member 60c having an arc-shaped cross section is provided along the lower edge. The tip of the bottom wall 60a and the bottom wall 60
A substantially rectangular discharge port 60d is formed between the discharge port and the front end of the discharge port b, and the metering discharge device 70 is disposed at a position that closes the discharge port 60d.

The weighing and discharging device 70 includes a shaft member 72 rotatably mounted on a horizontal axis, and a shaft member 7.
2 and a plurality of plate members 74 fixed to the outer peripheral surface. The shaft member 72 is driven to rotate by a motor (not shown). The plate member 74 is a plate-like member and extends continuously in the axial direction of the shaft member 72. The plate members 74 extend in the radial direction when viewed from the front, and are fixed to the outer peripheral surface of the shaft member 72 at equal angular intervals. Plate member 74
Preferably, about 4 to 12 sheets are fixed to the outer peripheral surface of the shaft member 72. If it is too small, during rotation of the shaft member 72,
This is because the plate member 74 does not exist in the granular material passage extending from the inside of the hopper main body 60 to the outside, and the granular material flows out. On the other hand, if the amount is too large, when the rotation of the shaft member 72 is accelerated, the granular material cannot enter the region between the pair of adjacent plate members 74 all over, and the measurement becomes inaccurate.

The above-mentioned closing member 60c has an area capable of covering the outer peripheral surfaces of the two adjacent plate members 74, thereby reliably preventing the flash from flowing out. In addition, a gap existing between the distal end of the plate member 74 and the inner peripheral surface of the closing member 60c can also cause flash outflow. Therefore, a thin rubber plate 74a having elasticity at the distal end of the plate member 74 (see FIG. (Only one of them is shown) is preferably attached. This has the advantage that the flash can be reliably prevented from flowing out, and that the granular material can be accurately measured.

In the hopper 42 for a granular material provided with the measuring and discharging device of the present invention, the amount of the granular material to be discharged can be arbitrarily set after adjusting the rotation of the shaft member 72 accurately. Has an effect. In addition, the adjustment is a simple operation only for adjusting the number of rotations of the motor, and can be controlled very inexpensively and accurately. The function of adjusting the discharge amount is a case where the granules discharged from the hopper are mixed with another material at a predetermined ratio, and when the supply of the other material is slightly changed, the ratio of the mixture is adjusted. An effect that can always be constant is brought. Thereby, the quality of the product produced using such a mixture as a raw material can be kept constant.

The rotation of the shaft member 72 can be performed continuously or intermittently. In each case, the load of the upper granular material is applied on the lower granular material, and the granular material is pressed by the pressure to cause the pair of adjacent plate members 74 to move.
It is stored tightly in the area between. In particular, when the number of the plate members 74 is eight, the respective plate members 74 are fixed to the outer peripheral surface of the shaft member 72 at intervals of 45 degrees (see FIG. 1). Therefore, when one plate member 74 is in the state shown in FIG. 1 in which the plate member 74 is oriented in the vertical direction, the granular material receives the pressure of the weight of the granular material corresponding to the height stacked above the granular material, so that the granular material in the rotational direction immediately before is rotated. It is housed densely in the region A formed between the plate member 74. The plate member 74 immediately before in the rotation direction
The granular material descending along the bottom wall 60a is pushed into the region B formed between the plate member 74 and the horizontal plate member 74 in FIG. 1 at an angle of approximately 45 degrees. In this manner, the direction in which the region between the pair of adjacent plate members 74 is released coincides with the direction in which the granular material is pushed,
In such a region, the granular material is stored densely without any gap.

Further, in a region C in which the outer peripheral portion is closed by the closing member 60c, at least one plate member 74 closes the flow path of the granular material to prevent flash outflow. Then, since the lower part is released when reaching the area D, the granular material stored therein falls by its own weight onto a conveyor device 80 such as a conveyor disposed below and is discharged. Since the rotation of the shaft member 72 can be performed by using the potential energy of the granular material as in the case of the water wheel, the consumption of electric energy by the motor does not need to be so large. Therefore, there is an effect that the running cost can be suppressed lower than that of the hopper for a granular material provided with the conventional metering and discharging device shown in FIG.

As another embodiment, as shown in FIGS. 4 and 5 relating to a sludge treatment system, the present invention can be used as a curing container 14a in sludge treatment for purifying sludge using the decomposing power of microorganisms. Conventionally, sludge has been treated. As a purification treatment, a purification treatment using microorganisms in nature and a purification treatment using microorganisms added intentionally have been proposed. As an example of a treatment using microorganisms in nature, there is a treatment in which sludge is buried in the ground and purified by natural fermentation and decomposition by microorganisms. Further, as a treatment using a microorganism intentionally added, a method using a thermophilic bacterium has been proposed. Thermophiles grow at temperatures higher than the temperature range at which normal room temperature microorganisms grow, and they not only degrade organic matter, but also expose pathogens and harmful parasite eggs in sludge to high temperatures. It can be inactivated.

As a specific treatment process, fermentation is started by bacteria such as bacteria, fungi and actinomycetes which grow at a relatively low temperature among various microorganisms inhabiting the sludge. At the same time, the cells rapidly proliferate, and at the same time, the temperature rises to 30 to 60 ° C. due to the heat of decomposition of organic substances. At this time, yeasts, molds, nitric acid bacteria, etc., which are sensitive to temperature, die. When the temperature rises, the thermophile added intentionally begins to proliferate, and the fermentation heat further increases, inactivating most of pathogenic bacteria, diseased eggs, harmful insect eggs, viruses, and weed seeds, and is harmless to humans and animals. It becomes something. By using not only normal thermophiles but also thermophiles with particularly high thermophilicity such as biocolonies and bioheats (both manufactured by Biospecial Co., Ltd.) It is possible to raise and ferment. By using thermophiles in this way, fermentation at higher temperatures becomes possible, and therefore the treatment time can be significantly reduced as compared to natural fermentation, and the purification and stabilization of sludge can be further enhanced. There is such a merit.

There is also a method using phototrophic bacteria as microorganisms. Specifically, a product in which phototrophic bacteria are immobilized on a carrier is added to the target (Japanese Patent Laid-Open No. 5-111694).
And an apparatus for processing an object by mixing the bacteria immobilized on a carrier into a pipe-shaped processing tube device (Japanese Patent Laid-Open No. Hei 8-224592). Here, “phototrophic bacteria” generally refer to photosynthetic bacteria (Photosynthet bacteria).
Bacteria called "ic bacteria", "Be
rgey's Manual of Determinative Bacteriology 8th ed
ition (1974), according to the classification established in Phototrophicbacteria. Specific examples thereof include, but are not particularly limited to, Rhodospirillaceae including Rhodospirillum, Rhodopseudomonas, and Rhodomicrobium; Chromatiaceae including Chromatium; Chlorobiaceae including Chlorbium alone; Or a mixture of two or more.

Regarding the sludge treatment for purifying using the decomposing power of such microorganisms, the outline of the system and treatment method will be described first, and thereafter, one embodiment of the hopper for a granular material provided with the measuring and discharging device according to the present invention. Curing container 14a as an example
Will be described in detail. A curing container 1 which is an embodiment of a powder / particle hopper provided with a measuring / discharging device according to the present invention.
In the sludge treatment system provided with 4a, any of the above thermophilic bacteria or phototrophic bacteria may be used alone or in combination. In addition, since only the above-mentioned bacteria are ingested by predatory bacteria in the treatment tank and cause a reduction in treatment efficiency, preferably, a carrier for fixing the above bacteria therein, for example, perlite, vermiculite, diatomaceous earth, activated carbon, porous ceramics, etc. Can be added to the bacteria at a predetermined ratio. In the illustrated embodiment, an example using a thermophilic bacterium is shown.

The sludge treatment system is as shown in FIG.
A sludge treatment facility A is provided which includes a fermentation decomposition area B for curing or fermenting and decomposing sludge, and a bacteria-mixed sludge production area C for mixing the sludge carried in from the truck 1 with bacteria to obtain a bacteria-mixed sludge. This sludge treatment facility A is a building F drawn by a dashed line.
Will be built within. As shown in the figure, the fermentation / decomposition region B and the bacteria-mixed sludge production region C are separated by a partition F1, and each region is provided with a necessary deodorant / odor leakage prevention means. Generation of off-flavors around
Eliminating spills can completely eliminate the problem of odor, which is a major factor in this type of sludge treatment plant's protest against the population. In addition, D in the figure indicates a deodorizing required area.

The sludge carried to the fungus-mixed sludge production area C is
The sludge is introduced into the sludge receiving device 2 from the tank 1 a of the truck 1, transferred to the mixer 3 by the belt conveyor 6, and roughly mixed with a return material described later in the mixer 3. Since the return material already contains thermophilic bacteria, a sufficient amount of inoculum is given to the sludge by coarse mixing with the return material (the sludge mixed with the thermophilic bacteria in the mixer 3 as described above). Is referred to as bacterial mixed sludge. The bacteria-mixed sludge is then conveyed to a bacteria-mixing and crushing device 4 in which the bacteria-mixed sludge is finely crushed and mixed so as to be in uniform contact with thermophilic bacteria.

Next, the mixed sludge is fed to the belt conveyor 12.
Curing container building 1 located in fermentation decomposition area B via
4 is transferred to one of the curing containers 14a. The bacteria-mixed sludge is stored in each curing container 14a for a predetermined number of days (for example,
2 days), the sludge is fermented and decomposed by the action of thermophilic bacteria. After the curing period, the treated sludge is fed to the belt conveyor 1 from the bottom of each curing container 14a.
Further, the treated sludge conveyed by the plurality of belt conveyors 15 is collected and returned to the fungus-mixed sludge production area C by the belt conveyor 17 that conveys the treated sludge to the fungus-mixed sludge production area C side. In the fungus-mixed sludge production area C, the treated sludge is first returned to the classifier 8 (the treated sludge put into the mixer 3 is called a returned material. The same applies hereinafter) and the treated product (treated sludge). Of these, those that are shipped as compost are referred to as processed products. The processed product is transferred to the processed product carrying-out device 9 and used as fertilizer for agricultural products. On the other hand, the returning material is the measuring device 1
The sludge is placed on the belt conveyor 6 measured at 0, transferred to the post-mixer 3 together with the new sludge from the sludge receiving device 2, and roughly mixed with the new sludge. Thereafter, similar operations are continuously performed.

In addition, the above-mentioned reclaimed material mainly functions to adjust the moisture even when there is variation in the moisture content of the newly introduced sludge, that is, it functions as a moisture regulating material, and greatly helps the subsequent fermentation. Become. Further, by re-feeding the returning material, it is not necessary to newly feed the inoculum for a predetermined period (a period during which the bacteria can continue to divide and survive). The amount of the returning material can be adjusted so that its water content becomes 50% or more, preferably about 55% in a state of being mixed with the newly-input sludge, and the subsequent sludge fermentation is promptly promoted. be able to.

A part of the treated sludge conveyed by the belt conveyors 15 and 17 or a part of the return material weighed by the weighing device 10 is transferred by the belt conveyor 19 to one of the storage containers 20a in the storage container building 20.
It is configured to be charged and stored. The treated sludge stored in the storage container 20a is dropped on the belt conveyor 22 at any time as needed from the bottom thereof, and a belt conveyor that conveys the treated sludge from the curing container building 14 via the belt conveyor 22. 17 on. The treated sludge placed on the belt conveyor 17 is sent to the classification device 8 through a normal operation, and repeats the flow described above. In the figure, 27 is a condensed water recovery device,
27a is a steam discharge pipe, 27b is a pipe, 27c is a pump, 27d is a conditioner, 29 is a fermentation control device, 31
Denotes a blower, and 31a and 31b denote pipes, respectively.

Next, a description will be given of a curing container 14a which is an embodiment of a hopper for a granular material provided with a measuring and discharging device according to the present invention. FIG. 4 is a longitudinal sectional view of the curing container 14a. As shown, the curing container 14a
Is an inclined bottom wall 14b having a substantially V-shaped bottom.
14c having a rectangular outlet 14 at the bottom.
d is formed. A measuring device 25 that measures and discharges the treated sludge by a predetermined amount at an outlet 14d is installed. The weighing device 25 is generally a cylindrical shaft portion 25.
a, a plurality of plates 25b fixed to the outer peripheral surface of the shaft portion 25a continuously in the axial direction and at equal intervals in the circumferential direction, and a drive device (not shown). The treated sludge that has been fermented and decomposed in the curing container 14a is accommodated in a region (A to C in the drawing) formed by a pair of adjacent plates 25b and rotated. Fall on. By intermittently driving the driving device or changing its speed, the amount of treated sludge discharged by the metering device 25 can be freely adjusted.

As shown in FIG. 5, inside the curing container 14a, as a member mainly related to fermentation, a heat retaining pipe 14e for circulating hot water for regulating the internal temperature, and a fermentation treatment of sludge and bacteria. An air supply pipe 14f is provided for uniformly feeding air in order to promote the air flow. Further, each curing container 14a or each curing container building 14 has a steam discharge pipe 2 for discharging steam to the outside.
7a, When a phototrophic bacterium is used instead of or together with a thermophilic bacterium, a lighting device (not shown) for irradiating light desired by the phototrophic bacterium is installed. A sensor (not shown) is provided on the side surface of each curing container 14a for grasping the state of the temperature and internal pressure inside the container from the start stage to the end stage of the fermentation process and outputting it to an external processing device. Installed.

Next, the operation will be described. The sludge conveyed by the truck 1 is mixed with a return material and / or thermophilic bacterium in the fungus-mixed sludge production area C to make the mixed sludge, sent by the belt conveyor 12 and dropped into the curing container 14a. The bacteria-mixed sludge introduced into each curing container 14a to a predetermined depth is stored therein for a predetermined number of days, and is fermented and decomposed by the action of bacteria. In the fermentation decomposition, when the mixed sludge is at a low temperature, the pipe 33a is supplied from the boiler 33.
And warm water is circulated and supplied through the heat retaining pipe 14e, and the temperature can be raised to promote fermentation. Alternatively, steam is supplied from another curing container 14a in which fermentation proceeds and generates high-temperature steam (when it is better to increase the water content of the bacteria-mixed sludge), or fermentation control of such a curing container 14a. The pressurized air after the heat exchange in the device 29 can be supplied to the curing container 14a (when it is better to reduce the moisture of the bacteria-mixed sludge as it is or not) via the pipe 31b and the air supply pipe 14f. . By doing so, it is possible to prevent a situation in which fermentation is difficult to proceed in a cold region due to a low temperature of the sludge, and a period until the treatment is completed becomes long.

After a predetermined curing period has elapsed and the bacteria-mixed sludge has been fermented and decomposed, the measuring device 25 installed at the bottom of each curing container 14a is operated to measure a predetermined amount of the treated sludge on the belt conveyor 15. To be discharged. The treated sludge is moved below the curing container building 14 by the belt conveyor 15 and then returned to the fungus-mixed sludge production area C by the belt conveyor 17 extending substantially at right angles thereto. The treated sludge returned to the fungus-mixed sludge production area C by the belt conveyors 15 and 17 is discharged to the receiving tank of the classification device 8. In the classification device 8, the treated sludge is classified by the internal sieving type classification mechanism, and then approximately half of the sludge is transferred to the processed product unloading device 9, where the sludge is packed in the processed product unloading device 9 and waiting for shipment. To be stored in the product warehouse.

Almost half of the treated sludge remaining in the classification device 8 is weighed by the measuring device 10 as a return material, and then conveyed to the mixer 3 by the belt conveyor 7.
It is placed on the belt conveyor 6 to be combined with the new sludge from the sludge receiving device 2. Almost half of the treated sludge remaining in the classification device 8 can be temporarily stored in the storage container 20a of the storage container building 20. Thereby, the timing can be adjusted with the new sludge supplied to the sludge receiving device 2. In addition, in order to adjust the water content of the treated sludge stored in the storage container 20a, the condensed water from the condensed water recovery device 27 can be sprayed, or pressurized air can be injected from the blower 31. Then, when mixed with the sludge newly introduced into the sludge receiving device 2, the return material has a water content of 50% or more, preferably about 55%. The water content of the sludge can also be adjusted by adjusting the mixing ratio of the new sludge sent from the sludge receiving device 2 and the return material sent from the measuring device 10 by adjusting the driving speed of each measuring device. it can.

[0031]

According to the present invention, the bottom of the hopper storing the granular material is formed in a substantially V-shape so that the granular material gathers at the center and falls, and a substantially rectangular discharge port is formed at the lowermost portion. And a shaft member rotatably mounted on a horizontal axis at a position closing the discharge port, and each of the shaft members is continuous at an axial direction and extends in a radial direction at equal angular intervals. In order to arrange a metering discharge device having a plurality of plate members fixed to the outer peripheral surface of the shaft member,
By rotating the shaft member of the weighing / discharging device, there is an effect of weighing out and discharging the amount of the granular material accommodated between the adjacent plate members. In addition, by adjusting the number of rotations of the shaft member per unit time, the amount of the granular material discharged per short time can be accurately measured and arbitrarily adjusted.

When an arc-shaped closing member having an area capable of covering the outer peripheral surfaces of two adjacent plate members is provided adjacent to the discharge port at the bottom of the hopper, the shaft member rotates, and Since there is always one or more plate members in the body outflow passage, flush outflow can be reliably prevented.

When the number of plate members is 4 to 12, the predetermined amount of the powder and granules can be surely placed between each pair of plate members by utilizing the weight of the powder and granules stored in the hopper. In addition, at least one plate member can be disposed as a shield in the movement path of the granular material, whereby the flushing outflow can be reliably prevented.

When an elastic plate is attached to the distal end of the plate member so as to be interposed between the plate member and the inner peripheral surface of the closing member, the distal end of the plate member and the inner peripheral surface of the closing member are provided. By closing the gap existing between the surface and the surface with the elastic plate, it is possible to more reliably prevent the powder and the granular material from flashing out.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of a hopper for a granular material provided with a measuring and discharging device according to the present invention.

FIG. 2 is a perspective view of the weighing and discharging device used in FIG.

FIG. 3 is a vertical cross-sectional view of one embodiment of a hopper for a granular material provided with a conventional metering / discharging device.

FIG. 4 is a longitudinal sectional view of one embodiment of a hopper for a granular material provided with another weighing and discharging device different from FIG. 1;

5 is a plan view showing an entire configuration of a sludge treatment system using a hopper for a granular material provided with the metering / discharging device of FIG.

[Explanation of symbols]

A Sludge treatment facility B Fermentation decomposition area C Bacteria mixed sludge production area D Necessary area for deodorization E Building F Building G Truck weighing scale H Automatic washing device 1 Truck 1a Tank 2 Sludge receiving device 3 Mixer 4 Bacteria mixing and crushing device 6, 7 Belt Conveyor 8 Classification device 9 Processed product unloading device 10 Weighing device 11 Belt conveyor 12 Belt conveyor 12a Branch line, 12b Main line 14 Curing container building 14a Curing container, 14b, 14c Bottom wall, 14d
Outlet, 14e Insulation tube, 14f Air supply tube 15, 17 Belt conveyor 19 Belt conveyor 20 Storage container building 20a Storage container 22 Belt conveyor 25 Metering device 27 Condensed water recovery device 27a Steam discharge pipe, 27b Pipe, 27c pump, 27d Conditioner 29 Fermentation control device 31 Blower 31a, 31b Piping 33 Boiler 33a Piping 42 Powder hopper 60 Hopper body 60a, 60b Bottom wall, 60c Closing member, 60d Discharge port 70 Metering and discharging device 72 Shaft member 74 Plate member 74a Rubber Plate 80 Conveying device 90 Seed layer

Claims (4)

[Claims] 1. A bottom portion of a hopper accommodating the powder and granules is formed in a substantially V-shape so that the powder and granules gather at a central portion and fall, and a substantially rectangular discharge port is formed at the lowermost portion thereof. A shaft member rotatably mounted around a horizontal axis at a position closing the discharge port, and the shaft members are each formed at equal angular intervals so as to be continuous in the axial direction and extend in the radial direction. A plurality of plate members fixed to the outer peripheral surface of the weighing / discharging device are arranged, and by rotating a shaft member of the weighing / discharging device, an amount of the amount accommodated between the adjacent plate members is reduced. A powder / particle hopper provided with a weighing / discharging device for measuring and discharging a powder / particle. 2. The powdery and granular material hopper provided with the weighing and discharging device according to claim 1, wherein the outer peripheral surfaces of two adjacent plate members can be covered adjacent to the discharge port at the bottom of the hopper. A hopper for a powdery or granular material provided with a metering / discharging device, wherein a closing member having an arc-shaped cross section for preventing flash outflow is provided. 3. The hopper for a granular material provided with the metering / discharging device according to claim 1 or 2, wherein the plate member comprises 4 to 1
A hopper for a granular material provided with a metering / discharging device comprising two sheets. 4. A powdery and granular material hopper provided with a weighing / discharging device according to claim 1, wherein an inner peripheral surface of the plate member and the closing member is provided at a tip end of the plate member. A hopper for a granular material having a metering / discharging device, wherein an elastic plate is attached so as to be interposed between the hopper.