JP2022166375A - Filter test device and filter test method - Google Patents

Abstract

To improve the accuracy of sample collection efficiency.SOLUTION: A filter test device 600 of the present disclosure is a filter test device 600 for testing sample collection efficiency of a filter 590 supported in the middle of a flow path, and the filter test device 600 includes a feeder 630 that is arranged on an upstream side of the filter 590 and supplies a sample stored in a container into a channel, and a meter 615 to which the weight of the feeder is transmitted and can measure a change in the weight of the feeder 630 as the amount of supply of the sample.SELECTED DRAWING: Figure 54

Description

The present disclosure relates to a filter testing device and a filter testing method for testing sample collection efficiency of filters.

Conventionally, as this type of filter testing device, there is known one in which a filter is supported in the middle of a flow path, a sample is flowed from the upstream side, and filtered by the filter (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2002-195931 (Fig. 1 etc.)

In the above-described conventional filter testing apparatus, it is desired to improve the accuracy of the sample collection efficiency.

The invention of claim 1, which has been made to solve the above problems, is a filter testing device for testing the sample collection efficiency of a filter supported in the middle of a flow path, wherein the filter is arranged upstream of the filter, and a container a feeder that feeds the sample contained in the filter into the flow path; and a weighing device to which the weight of the feeder is transmitted and that can measure the change in the weight of the feeder as the amount of sample supplied. It is a device.

In the filter test apparatus of claim 1, since the actual weight of the discharged sample is measured, the actual weight of the sample collected by the filter is calculated from the weight of the filter before and after the test, and the sample collected from the actual weight. Calculating the efficiency improves the accuracy of the sample collection efficiency.

1 is a perspective view of a granular material supply device according to a first embodiment; FIG. Cross-sectional view of powder material feeder Enlarged perspective view around rotary drive shaft Enlarged view around the small-diameter housing Perspective view of bottom wall member Top view of mesh member (A) Plan view of shutter member, (B) Cross-sectional view of shutter member Image of bottom wall member Enlarged sectional view around the bottom wall member A plan view of a mesh member according to a modification (A) Perspective view of straight wing according to modification, (B) Plan view of curved wing according to modification Sectional view of a granular material supply device according to a second embodiment (A) Perspective view of scraper, (B) Enlarged view around scraper Enlarged sectional view around the bottom wall member Perspective view of bottom wall member A plan view of a mesh member according to a modification Sectional view of a granular material supply device according to a third embodiment Exploded perspective view of granular material feeder Cross-sectional view of a granular material supply device according to a modification Cross-sectional view of a granular material supply device according to a modification Sectional view of a granular material supply device according to a fourth embodiment Image diagram of a subtractive supply quantity metering device according to the fifth embodiment Image diagram of relay part Image diagram of relay part Image diagram of transition terminal according to modification Image diagram of transition terminal according to modification Image diagram of transition terminal according to modification Image diagram of transition terminal according to modification Image diagram of transition terminal according to modification Image diagram of a relay unit according to a modification Image diagram of the vicinity of the elbow rotary joint joint of the subtraction type supply metering device according to the sixth embodiment. An image of the elbow rotary joint joint of the subtraction type supply metering device according to the modification A perspective view of a subtractive supply quantity metering device according to a seventh embodiment. Cross-sectional view of subtractive feed metering device Enlarged sectional view around the container for discharge Cross-sectional view of a subtractive supply quantity metering device according to an eighth embodiment Sectional view of a granular material supply device according to a ninth embodiment Planar cross-sectional view of granular material feeder Planar cross-sectional view of a granular material supply device according to a modification Sectional view of a granular material supply device according to a tenth embodiment Cross-sectional view of a granular material supply device according to a modification Top view of fixture A plan view of a mesh member according to a modification Plan view of mesh support according to modification Cross-sectional view of a discharge nozzle according to a modification Front view of a scraper according to a modification Image diagram of transition terminal according to modification Image diagram of a subtraction type supply amount measuring device according to a modification Image diagram of a subtraction type supply amount measuring device according to a modification Cross-sectional view of a granular material supply device according to a modification An image of the elbow rotary joint joint of the subtraction type supply metering device according to the modification Cross-sectional view of a granular material supply device according to a modification The perspective view of the filter test apparatus which concerns on 11th Embodiment. Side view of filter test equipment Front view inside feeder casing Exploded perspective view of introduction cone Fracture cross-section of lead-in cone Enlarged view around the filter casing Enlarged view around the filter casing Exploded perspective view of filter casing Diagram for explaining the filter casing Diagram for explaining the filter casing Exploded perspective view of exhaust cone Perspective view of power supply mechanism Diagram for explaining the power supply mechanism Perspective view of the periphery of the feeder according to the modification Diagram for explaining the modified example Diagram for explaining the modified example

[First embodiment]
Hereinafter, the granular material supply device 10 of the first embodiment will be described with reference to FIGS. 1 to 11. FIG. The granular material supply device 10 shown in FIG. The replenished granules are supplied from the granule discharge port 20 provided at the bottom of the granule container 11 . In this embodiment, the container 210 to which the powder is supplied is placed on the weighing plate 101 of the scale 100, and the amount of powder supplied to the container 210 is measured.

As shown in FIGS. 1 and 2, the granular material container 11 has a cylindrical shape and has a large-diameter container 12A and a small-diameter container 12B inside. Specifically, the granular material container 11 includes a cylindrical first cylindrical body 11A having both ends opened in the vertical direction, and a bottomed second cylindrical body 11A having an upper end opening that abuts against the lower end opening of the first cylindrical body 11A. It has a cylindrical body 11B and a lid body 11C that overlaps the upper end opening of the first cylindrical body 11A. The inner peripheral surface of the first cylindrical body 11A and the inner peripheral surface of the second cylindrical body 11B are flush with each other, and the inside thereof serves as a large-diameter accommodating portion 12A. Further, the bottom wall of the second cylindrical body 11B is thicker than the side wall, and a through hole 11K is formed in the center. The inner side of this through hole 11K serves as a small-diameter accommodating portion 12B.

The hopper 50 is composed of an inverted cone-shaped container 51 and a cylindrical chute 52 extending from the lower end thereof. is inserted in the The lower end opening 52A of the chute 52 is arranged slightly below the lower surface of the lid 11C and closer to the inner peripheral surface of the first cylinder 11A.

A supply motor 14 is fixed to the center of the upper surface of the lid 11C. A rotary drive shaft 14A connected to the supply motor 14 penetrates the lid body 11C and extends along the central axis in the large-diameter housing portion 12A and the small-diameter housing portion 12B. A baffle body 15 that rotates integrally is attached to the rotary drive shaft 14A. The baffle body 15 has a conical shape, and its height varies from the vertical center of the large-diameter housing portion 12A to the upper surface of the bottom wall of the second cylindrical body 11B (between the large-diameter housing portion 12A and the small-diameter housing portion 12B). It is up to the position near the stepped surface 12D). The bottom surface of the baffle body 15 has a smaller diameter than the inner diameter of the large-diameter housing portion 12A and a larger diameter than the inner diameter of the small-diameter housing portion 12B. It extends horizontally at a slightly upwardly spaced position.

A linear blade 16, a scraper 17, and a curved blade 18 are provided in order from the top below the baffle body 15 of the rotary drive shaft 14A. As shown in FIGS. 3 and 4, the straight blades 16 linearly extend laterally from the rotary drive shaft 14A. The curved blades 18 are composed of a straight portion 18A extending from the rotary drive shaft 14A to both sides and in a direction orthogonal to the straight blades 16 to slightly outside the outer edge of the small-diameter accommodation portion 12B, and a straight portion 18A extending from the tip of the straight portion 18A to the rotary drive shaft 14A. It has an arc portion 18B formed in an arc shape so as to bulge in the opposite direction to the direction of rotation (the direction of the solid arrow in FIG. 4). In addition, the straight blade 16 and the curved blade 18 extend to a position closer to the inner peripheral surface of the second cylindrical body 11B. The straight blade 16 rotates in the horizontal plane near the lower surface of the baffle body 15, while the curved blade 18 rotates in the horizontal plane while sliding on the stepped surface 12D (see FIG. 2).

As shown in FIG. 2, the granular material discharged from the lower end opening 52A of the chute 52 is deposited directly on the stepped surface 12D, or is guided downward by the baffle body 15 into the large-diameter accommodating section 12A. be accommodated. Then, it flows to the lower side of the baffle body 15 from the annular space between the lower end portion of the baffle body 15 and the inner peripheral surface of the second cylindrical body 11B. When the rotary drive shaft 14A is stopped, a powder mountain having a predetermined angle of repose is formed between the lower surface of the baffle body 15 and the stepped surface 12D. Some of them flow down to the small-diameter accommodating portion 12B without forming a granule mountain). In this state, when the rotary drive shaft 14A rotates, as indicated by the dotted arrow in FIG. 4, the rotating curved blades 18 collapse the granule pile, guide it toward the center, and feed it into the small-diameter container 12B. At this time, the straight blade 16 rotates between the curved blade 18 and the lower surface of the baffle body 15 (see FIG. 2) to agitate the granular material, thereby preventing the granular material from solidifying or clogging. It is possible to stably flow down the granules. Moreover, when the powder is a mixture of two or more types of powder, the mixing degree of the powder can be increased.

As shown in FIGS. 3 and 4, the scraper 17 includes an upper side portion 17A extending parallel to the straight blades 16 at a position offset from the center of the rotary drive shaft 14A, and first and first blades extending downward from both ends of the upper side portion 17A. 2 hanging portions 17B and 17C. The first drooping portion 17B extends to a position near the inner surface of the small-diameter housing portion 12B and near the lower end of the small-diameter housing portion 12B. On the other hand, the second hanging portion 17C extends to a position closer to the center than the first hanging portion 17B and slightly below the curved blade 18 . When the scraper 17 rotates, the first drooping portion 17B turns around the inner peripheral surface of the small-diameter accommodating portion 12B. As a result, it is possible to scrape off the powder particles that have adhered to the inner peripheral surface of the small-diameter housing portion 12B due to static electricity or the like.

As shown in FIG. 2, a bottom wall member 30 is detachably attached below the second cylindrical body 11B of the granular material container 11. As shown in FIG. As shown in FIGS. 2 and 5, the bottom wall member 30 is fastened to the bottom wall of the second cylindrical body 11B and has a through hole 31A formed in a portion overlapping with the through hole 11K of the second cylindrical body 11B when viewed from above. and a mesh member 33 and a shutter member 37 attached to the upper surface of the mounting plate 31 . The through hole 31A of the mounting plate 31 has a slightly larger cross section than the through hole 11K of the second cylindrical body 11B and has a uniform diameter. A discharge nozzle 39 is attached to the through hole 31A, the inner diameter of which narrows slightly downward. Further, the mounting plate 31 has recesses formed on its upper surface for receiving the mesh member 33 and the shutter member 37 .

The mesh member 33 is shown in FIG. The mesh member 33 integrally includes a square plate 33A overlapping the through hole 31A of the mounting plate 31 from above and a band plate 33B extending outward from one corner of the square plate 33A. A vibrator 35 (see FIG. 5) for vibrating the mesh member 33 is attached to the end of the strip plate 33B opposite to the square plate 33A.

The square plate 33A is formed with a plurality of granular material passage holes 34 through which the granular material can pass. Configured. Here, in the granular material supply device 10 of the present embodiment, a large passage hole 34A, a medium passage hole 34B, and a small passage hole 34C having different sizes are provided as the granular material passage holes 34 . The large through hole 34A is formed by penetrating about 1/3 of the portion of the square plate 33A overlapping the through hole 31A (see FIG. 8) of the mounting plate 31 on the side opposite to the band plate 33B. The outer edge has an arc portion 34A1 along the outer edge and a straight portion 34A2 connecting both ends of the arc portion 34A1. The intermediate passage holes 34B have a square cross section, and are arranged next to the straight line portion 34A2 of the large through hole 34A along the straight line portion 31A2. The small passage hole 34C has a square cross-section with a size equivalent to that of the middle passage hole 34B. A plurality are formed so as to fill the part.

The small passage hole 34C is closed by a granular material arch formed by adhering (bridging) the granular material to each other, and has a size that allows the granular material to pass through when the granular material arch collapses. It's becoming That is, the size of the small passage holes 34C is at least several times to ten and several times the size of the granular material. The small passage hole 34C is normally blocked by the powder arch, and the powder is not discharged. Granules can be discharged.

The intermediate passage hole 34B may be closed by a granular material arch depending on the type of granular material. In some cases, the powder is always discharged. The large passage hole 34A always discharges the powder if the powder arch is not formed and if it is opened by the shutter member 37 .

The shutter member 37 is shown in FIG. The shutter member 37 is a strip-shaped flat plate, and a slide groove 37A extending in the longitudinal direction is formed on the lower surface thereof. One end of the shutter member 37 has a semicircular arc shape, and the end surface thereof is inclined downward toward the other end side. Also, the other end of the shutter member 37 is formed with two through holes 37B aligned in the longitudinal direction.

As shown in FIG. 5, the shutter member 37 is arranged such that its longitudinal direction coincides with the extending direction of the band plate 33B of the mesh member 33, and one end of the semi-arc shape is the rectangular plate 33A of the mesh member 33. , and the other end is located on the side opposite to the band plate 33B, and is arranged below the mesh member 33 with a mesh support 38 (see FIG. 9) interposed therebetween. As shown in FIG. 9, the mesh support 38 is formed with an opening 38A having substantially the same diameter as the through hole 31A of the mounting plate 31. As shown in FIG. As shown in FIGS. 2 and 5, a shutter presser plate 36 is fixed to the mounting plate 31 outside the mesh member 33 so as to contact the shutter member 37 from above.

A slider (not shown) that linearly moves the shutter member 37 in the longitudinal direction is connected to the through hole 37B of the shutter member 37 . As shown in FIG. 2, the mounting plate 31 is provided with an engaging pin 31T that engages with the slide groove 37A of the shutter member 37. The engaging pin 31T contacts the end of the slide groove 37A. The sliding range of the shutter member 37 is defined by the contact.

As shown in FIG. 8, when the engaging pin 31T is in contact with one end of the slide groove 37A, the shutter member 37 does not overlap the through hole 31A of the mounting plate 31, and all powder is removed. The granule passage hole 34 is open (that is, the granule discharge port 20 is fully open). When the shutter member 37 slides toward the center of the mounting plate 31, the large passage hole 34A is closed in order. The member 37 overlaps the entire through-hole 31A of the mounting plate 31, and all the powder passage holes 34 are closed (that is, the powder discharge port 20 is fully closed). In other words, the shutter member 37 can change the degree of opening and closing of the granular material discharge port 20 stepwise between the fully open state and the fully closed state. Further, when the powder or granular material discharge port 20 is changed from the fully open state to the fully closed state, the large passage holes 34A are sequentially closed.

By the way, the granular material in the granular material container 11 is subjected to pressure (granular material pressure) by the granular material above. Therefore, for example, in the case where the granular material is accommodated up to the height A in FIG. The body pressure differs, and the easiness of formation of powdery or granular material piles between the lower surface of the baffle body 15 and the stepped surface 12D and the amount of powdery or granular material flowing into the small-diameter housing portion 12B are different. That is, the higher the powder surface height, the greater the powder or grain pressure applied to the powder or grain near the step surface 12D, and the more easily the powder or grain is pushed toward the small diameter housing portion 12B. increase in inflow. Since the amount of powder particles flowing into the small-diameter housing portion 12B increases, the amount of powder particles discharged also increases even if the degree of opening and closing of the shutter member 37 and the strength of vibration of the vibrator 35 are the same. . That is, since the discharge speed of the granular material changes depending on the remaining amount of granular material in the granular material container 11, the powder can be discharged in a state where the granular material remaining in the granular material container 11 is large. When it is desired to discharge a small amount of granules, the granules are vigorously discharged and the required amount is exceeded, or a large amount of granules are discharged in a state where the remaining amount of granules in the granule container 11 is small. When you want to do it, it may take more time than expected.

In particular, the higher the bulk density of the granular material, the greater the weight per particle, and the narrower the allowable range of the number of particles with respect to the required amount. For example, when the powder is 1 mm3 in size and a weighing accuracy of ±0.003 g is obtained by high-precision automatic weighing, if the bulk density of the powder is 1.0, the weight of 1 mm3 of the powder is is 0.001 g, and the error must be within 6 particles. On the other hand, if the bulk density of the granular material is 0.25, the weight of 1 mm3 of the granular material is 0.00025 g, and the error should be within 24 particles. On the other hand, if the bulk density of the granular material is 3.0, the weight of 1 mm3 of the granular material is 0.003 g, and the error must be within 2 particles.

On the other hand, in the granular material supply device 10 of the present embodiment, as shown in FIG. 2, a laser sensor 25 is provided on the upper surface of the lid 11C. The laser sensor 25 emits a laser downward and measures the height of the powder surface of the granular material contained in the granular material container 11 . Then, by changing the rotation speed of the rotation drive shaft 14A according to the measurement result (for example, when the remaining amount of powder particles is reduced, the rotation of the rotation drive shaft 14A is increased, and when the powder particles are replenished, the rotation drive shaft 14A is rotated) For example, by slowing down the rotation of the shaft 14A, the discharge speed of the granular material can be brought close to the expected speed.

The rotation speed of the rotation drive shaft 14A may be manually changed according to the height of the powder surface. It may be configured to be automatically controlled. In this case, it is preferable to create control data by obtaining data for each type of granular materials having different bulk densities. Further, the discharge amount may be changed by changing the vibration intensity of the vibrator 35 depending on the height of the powder surface.

The above is the description of the configuration of the granular material supply device 10 of the present embodiment. Next, the effects of this embodiment will be described. First, the shutter member 37 is fully closed, the powder is supplied from the hopper 50 to the powder container 11, and the supply motor 14 is driven. Then, the granular material flows downward from the annular space between the lower end portion of the baffle body 15 and the inner peripheral surface of the second cylindrical body 11B to the lower side of the baffle body 15 and into the small-diameter accommodating portion 12B. At this time, since the straight blades 16 and the curved blades 18 are rotated to agitate the granular material, it is possible to prevent the granular material from solidifying or clogging, and to stably flow down the granular material. .

The granular material that has flowed into the small-diameter housing portion 12B is deposited on the mesh member 33 or the shutter member 37. As shown in FIG. Specifically, the small passage holes 34C (or the small passage holes 34C and the medium passage holes 34B) of the mesh member 33 are blocked by powder arches formed by adhesion of powder particles. , and the large passage hole 34A is not blocked by the powder arch. deposit on top. Then, when the shutter member 37 is opened and the vibrator 35 is operated, the powder particles passing through the middle passage hole 34B and the large passage hole 34A (or the large passage hole 34A) are discharged from the powder discharge port 20. At the same time, the granular material arches on the small passage holes 34C (or the small passage holes 34C and the medium passage holes 34B) are collapsed by the external force, and the granular material forming the granular material arches is broken into small passages. It passes through the hole 34C (or the small passage hole 34C and the medium passage hole 34B) and is discharged downward from the powder discharge port 20 . The small passage hole 34C (or the small passage hole 34C and the medium passage hole 34B) is immediately formed with a new powder or grain arch and closed again.

Since the amount of the powder particles that flow out from the small passage holes 34C (or the small passage holes 34C and the medium passage holes 34B) until the powder arch collapses and is formed again is extremely small, the small passage holes 34C (Or, from the small passage holes 34C and the medium passage holes 34B), minute amounts of powder particles can be supplied. In addition, when the vibration of the vibrator 35 is increased, the pace at which the powder arch collapses can be increased, so that the discharge speed of the powder can be increased. On the other hand, a large amount of powder is supplied from the medium passage holes 34B and the large passage holes 34A (or the large passage holes 34A) compared to the small passage holes 34C (or the small passage holes 34C and the medium passage holes 34B). can do.

Here, in the granular material supply device 10 of the present embodiment, the shutter member 37 for opening and closing the granular material discharge port 20 is provided, and the degree of opening and closing of the plurality of granular material passage holes 34 is changed stepwise. Therefore, it is possible to adjust the discharge amount of the granular material. Moreover, when the shutter member 37 is slid from the fully open state to start closing the powder discharge port 20, the large passage hole 34A is closed first, and when the state is nearly fully closed, only the small passage hole 34C is opened. As a result, it becomes possible to supply the powder or granular material in very small amounts.

By the way, since the granular material in the granular material container 11 is subjected to granular material pressure, the amount of granular material in the granular material container 11 is reduced by being discharged from the granular material discharge port 20. or increase due to replenishment, the granular material pressure applied to the granular material near the granular material discharge port 20 changes, and even if the vibration of the vibrator 35 is constant, the pressure from the granular material discharge port 20 changes. Emissions are expected to change. On the other hand, the granular material supply device 10 of the present embodiment has the laser sensor 25 for measuring the height of the powder surface of the granular material contained in the granular material container 11. By changing the rotation speed of the rotary drive shaft 14A based on the measurement result, the discharge speed of the granular material can be brought close to the expected speed. In addition, the structure which changes the strength of the vibration of the vibrator 35 may be sufficient. Further, it may be configured such that the powder surface height at the powder replenishment timing in the powder container 11 is determined and a signal is output at the desired powder surface height.

When weighing a predetermined amount, for example, 100 g of powder with a weighing accuracy of ±0.01 g and weighing it into the container 210 with the powder supply apparatus 10 described above, the following operation is performed. First, on the control side, 0.01 g of drop correction (the weight of floating in the air until the powder or grain reaches the bottom on the powder or grain filled in the powder or grain container 210 after the powder or grain discharge port 20 is fully closed) is Then, the container 210 is placed on the weighing pan 101 of the weighing scale 100 and tare is subtracted (the display is set to zero).

Until the weighed value is about 95 g, which is just before 100 g, the powder discharge port 20 is fully opened, and the rotation speed of the rotary drive shaft 14A and the strength of the vibrator 35 are relatively increased to discharge the powder. increase the amount. When the weighed value exceeds 95 g, the powder discharge port 20 is gradually closed, and when the weighed value reaches just before 100 g, only the small passage hole 34C is opened, and the rotation speed of the rotary drive shaft 14A is increased. Then, the strength of the vibrator 35 is made relatively small, or the vibrator 35 is turned ON/OFF to perform the inching operation. At this time, it is preferable to reduce the rotational speed of the rotary drive shaft 14A and the strength of the vibrator 35 as the powder surface of the granular material contained in the granular material container 11 is higher. In this state, while confirming the value of the scale 100, the granular material is supplied in very small amounts. Then, when the weighed value reaches 0.01 g, which is 100 g before the fall correction, the powder discharge port 20 is fully closed, and the rotational speed of the rotary drive shaft 14A and the vibration of the vibrator 35 are stopped. After that, the display value of the weighing device 100 is read, and if it is within the weighing accuracy, the head correction is left as it is. If the weighing accuracy exceeds the weighing accuracy, the value obtained by subtracting 0.02 g from the overweight is input again as the drop correction value.

As described above, according to the powder supply device 10 of the present embodiment, a very small amount of powder can be supplied. can be measured accurately. Moreover, not only the rotational speed of the rotary drive shaft 14A and the strength of the vibrator 35 can be adjusted, but also the degree of opening and closing of the granular material discharge port 20 can be changed, so that the granular material discharge speed can be changed in a wider range. be able to. Furthermore, in addition to the small passage hole 34C (or the small passage hole 34C and the medium passage hole 34B) in which the powder or grain arch is formed, the medium passage hole 34B and the large passage hole 34A in which the powder or grain arch is not formed (or Since the large passage hole 34A) is also provided, a large amount of powder can be discharged at the beginning of feeding (when the target amount is far), and the target amount of powder can be accurately and quickly weighed. can.

If a program for feeding back the weighing value of the weighing device 100 is provided, when the target amount is set, the weighing value of the weighing device 100 and the measured value of the laser sensor 25 are converted into the slider of the shutter member 37 (not shown). ), the supply motor 14 and the vibrator 35 can be accurately automatically controlled.

[Modification]
(1) As the mesh member 33, mesh members 33W and 33Z shown in FIG. In addition, since the size of the powder passage holes 34 in which the powder arch can be formed differs depending on the properties of the powder (particle diameter, cohesiveness), etc., a plurality of powder passage holes 34 having different sizes can be used. may be replaced by a suitable mesh member.

(2) The straight blade 16 may have an upright portion 16K like a straight blade 16Z shown in FIG. 11(A). In this case, it is possible to agitate the granular material inside the large-diameter containing portion 12A, and scrape off the granular material adhering to the inner peripheral surface of the large-diameter containing portion 12A. Also, the curved wing 18 may be curved in the rotational direction like a curved wing 18Z shown in FIG. 11(B).

[Second embodiment]
FIGS. 12 to 16 show a granular material supply device 60 of the second embodiment. The granular material supply device 60 of this embodiment differs from the granular material supply device 10 of the first embodiment in the mechanism for applying an external force to the granular material arch. In the following, parts having the same configurations as those of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points are described.

As shown in FIGS. 12 and 13, the scraper 61 of the present embodiment has an upper side portion 61A extending parallel to the straight blades 16 at a position deviated from the center of the rotary drive shaft 14A, like the scraper 17A of the first embodiment. and first and second hanging portions 61B and 61C extending downward from both ends of the upper side portion 61A. The first drooping portion 61B extends to a position near the inner surface of the small-diameter housing portion 12B and near the lower end of the small-diameter housing portion 12B. When the scraper 61 rotates, the first drooping portion 61B turns near the inner peripheral surface of the small-diameter accommodating portion 12B. As a result, it is possible to scrape off the powder particles that have adhered to the inner peripheral surface of the small-diameter housing portion 12B due to static electricity or the like.

Here, in the present embodiment, the second drooping portion 61C extends below the first drooping portion 61B and is close to the mesh member 62 . Specifically, as shown in FIG. 13A, the second hanging portion 61C hangs vertically downward from the upper side portion 61A and then extends obliquely to approach the first hanging portion 61B. A laterally extending swivel band 61D is provided in the portion. As shown in FIG. 13B, the swivel band 61D extends radially from the center of the small-diameter housing portion 12B to a position close to the inner side surface, and the front edge side of the swivel band 61D is the rear edge side with respect to the swirl direction. It has an angle of attack that slopes upwards.

When the scraper 61 rotates, the swirl band 61D swirls on the mesh member 62 so as to pass through substantially the entire portion of the mesh member 62 that overlaps the small-diameter storage portion 12B, and scrapes the powder or granular material in the small-diameter storage portion 12B. An external force is applied to the granular material on the mesh member 62 by pressing it downward (on the side of the mesh member 62) (see FIG. 14). As a result, the granular material arch that closes the small passage hole 34C (or the small passage hole 34C and the medium passage hole 34B) collapses, and the powder or granular material falls into the small passage hole 34C (or the small passage hole 34C and the medium passage hole 34B). ).

Further, in this embodiment, since it is not necessary to provide the vibrator 35, the mesh member 62 is composed only of square plates as shown in FIG. Also in this embodiment, a plurality of mesh members having different sizes of passage holes may be prepared (see FIG. 16), and a suitable one may be selected and replaced according to the granular material.

In the present embodiment, similarly to the first embodiment, by changing the rotation speed of the rotary drive shaft 14A, the turning speed of the scraper 61, and the opening/closing degree of the powder discharge port 20, the powder discharge is controlled. The speed can be varied in a wider range, and the target amount of granular material can be accurately and quickly weighed.

[Third Embodiment]
17 and 18 show a granular material supply device 65 of the third embodiment. In the following, with respect to the granular material supply device 65 of the present embodiment, the same reference numerals are given to the parts having the same configuration as those of the above-described embodiment, and the description thereof will be omitted, and only the points of difference will be described.

As shown in FIG. 17, the granular material container 66 of the granular material supply device 65 of the present embodiment includes a vertical pipe 66A extending in the vertical direction and inclined with respect to the axial direction of the vertical pipe 66A. , and an inclined pipe 66B connected to the position near the lower end of the vertical pipe 66A. A hopper 67 for replenishing the granules is attached to the inclined pipe 66B, and a rotary drive shaft 14A having a scraper 68 and the like is accommodated in the vertical pipe 66A. A bottom wall member 69 is attached to the lower end of the vertical pipe 66A. The bottom wall member 69 is formed with a discharge guide portion 69A that tapers downward.

As shown in the figure, a rotating leg portion 14B extending from a position near the upper end to a position near the scraper 68 is attached to the rotary drive shaft 14A of the present embodiment. Further, as shown in FIG. 18, the scraper 68 of the present embodiment includes a pair of strip plates 68A horizontally extending in both radial directions from the rotary drive shaft 14A, and one strip plate 68A of the pair of strip plates 68A. A first hanging wall 68B hanging from one side and a second hanging wall 68C hanging from a side of the other band plate 68A that is point-symmetrical to the one side of the band plate 68A have. Both the first hanging wall 68B and the second hanging wall 68C hang vertically and then bend inward. getting higher. An extension portion 68B1 extending toward the second hanging wall 68C is provided at the lower end of the first hanging wall 68B. The lower ends of the first hanging wall 68B and the second hanging wall 68C are formed in a rectangular wave shape.

As shown in FIG. 18, in the present embodiment, the supply motor 14 is fixed to the powder container 66 by screwing the flange portion 14F. More specifically, the flange portion 14F is formed with a large-diameter hole 14D1 and a long hole 14D2 having a smaller width than the diameter of the large-diameter hole 14D1. Further, a screw 66N is loosely attached in advance to the upper end portion of the granular material container 66. As shown in FIG. When attaching the supply motor 14, first, the supply motor 14 is placed on the upper end portion of the powder container 66 so that the large diameter hole 14D1 of the paddle hole 14D passes through the head of the screw 66N. Then, the supply motor 14 is rotated and the screw 66N is tightened so that the screw 66N is arranged at the tip of the long hole 14D2. When removing the supply motor 14, loosen the screw 66N a little, rotate the supply motor 14 so that the head of the screw 66N and the large diameter hole 14D1 overlap, and remove. As described above, according to the present embodiment, for example, in the process of removing and reinstalling the supply motor 14 for replacement, inspection, cleaning, etc., it is possible to save labor in fastening the screws 66N. Although the bottom wall member 69 has the pedestal hole in the opposite direction, it is possible to similarly save the work of tightening the screws.

[Modification]
(1) As shown in FIG. 19, a vertical pipe 66A is attached with a hopper 67 (with a hopper internal bridge breaker and a vertical pipe inner wall turning leg, not shown), and an inclined pipe 66B accommodates the rotation drive shaft 14A. good too. In this case, the mesh member 62 is configured to be inclined in accordance with the inclination of the rotary drive shaft 14A. According to this modification, the granular material replenished from the hopper 67 falls vertically downward, so even if the fluidity of the granular material is poor, the granular material flows toward the granular material discharge port 20. easier.

(2) As shown in FIG. 20, a horizontal pipe 66C orthogonal to the vertical pipe 66A may be provided instead of the inclined pipe 66B. In this modified example, a hopper 67 is attached to the vertical pipe 66A, and the granular material passing through the vertical pipe 66A is discharged from the granular material discharge port 20 of the bottom wall member 69 attached to one end of the horizontal pipe 66C. . A vertical tube 66A houses a rotary drive shaft 14A with a scraper 68 that pivots over the surface of the mesh member 62, and has a rotary drive shaft 14A that rotates with the rotary drive shaft 14A and passes through the vertical tube 66A. A spiral blade 14R is attached to send the powder particles to the powder discharge port 20 side.

[Fourth Embodiment]
FIG. 21 shows a granular material supply device 70 of the fourth embodiment. The granular material supply device 70 has a configuration in which a hopper and a granular material container are integrated. Details will be described below.

As shown in the figure, the granular material supply device 70 has an inverted conical funnel portion 70A and a cylindrical portion 70B extending vertically downward from the lower end of the funnel portion 70A. , a bottom wall member 69 is attached. A lid 70C is provided at the upper end of the funnel 70A, and the supply motor 14 is fixed to the lid 70C. The rotary drive shaft 14A hanging down from the supply motor 14 is inserted on the central axis of the funnel portion 70A and the cylindrical portion 70B. A spiral blade 14R is attached to send the powder downward.

[Fifth embodiment]
In this embodiment, the granular material container of the granular material supply apparatus of the first to fourth embodiments is placed on the scale 100, and the decrease amount is used as the powder supply amount. Quantity metering device 300 . FIG. 22 illustrates an example using the granular material container 11 of the first embodiment.

As shown in FIG. 22A, in this embodiment, a horizontally long rectangular plate-shaped base 301 is installed on the scale 100 . When viewed from above, the base 301 is arranged such that its longitudinal central portion overlaps with the weighing scale 100, and its side portions are offset from the weighing scale 100. As shown in FIG. The granular material container 11 is arranged at one end of this base 301, and the base 301 is formed with a through hole 301A aligned with the granular material discharge port 20 of the granular material container 11. Granular material discharged from the discharge port 20 is supplied to a container 210 (see FIG. 1) disposed therebelow. In other words, the powder container 11 is arranged at a position shifted from the scale 100 in order to secure a mounting space for the container 210 . Reference numeral 37S in the drawing denotes a linear motion slider that linearly moves the shutter member 37 (see FIG. 8, etc.).

Counterweights 302 and 303 are provided at the end of the base 301 opposite to the granular material container 11 . These counterweights 302 and 303 are used to compensate for the eccentricity error of the weighing instrument 100 (the object to be weighed is placed on the center of the weighing pan) due to the granular material container 11 being displaced (overhanging) from the weighing instrument 100 . This is to eliminate the difference between when the device is placed and when it is placed at an arbitrary position).

Here, when the weight of the granular material container 11 is reduced by discharging the granular material from the granular material container 11, an error occurs in the measured value of the weighing device 100 due to the deviation error.

On the other hand, in the subtraction type supply metering device 300 of the present embodiment, a fixed fixed counterweight 303 and a movable counterweight 302 are provided as the counterweights 302 and 303, By moving the moving counterweight 302 in accordance with the discharge of the granular material of No. 11, it is possible to correct the error.

Specifically, as shown in FIG. 22A, a fixed counterweight 303 is arranged on the lower surface of the base 301 and a movable counterweight 302 is arranged on the upper surface of the base 301 . The moving counterweight 302 is moved by a direct-acting slider 302S fixed to the upper surface of the base 301 to move between the position indicated by the two-dot chain line in FIG. position”) in the longitudinal direction of the base 301. The moving counterweight 302 is actuated as follows.

(1) Place the movable counterweight 302 at the first position with the powder container 11 empty, and align the right angle part of the equilateral angle steel with the right angle part facing up on the center line of the scale 100. put. Next, the center line of the base 301 is aligned with the right angle part of the equilateral angle steel, and the weight of the fixed counterweight 303 is adjusted so that the center of gravity of all the parts on the base 301 can be obtained, and the left and right balance is balanced. Let it be the center of gravity line. Then, the equilateral angle steel is removed, and the center of gravity of the base 301 is aligned with the center line of the weighing scale 100 and placed on the weighing scale 100 . The scale 100 is then tared (zero display).

(2) Then, the granular material weighed in advance is put into the granular material container 11 to be filled with the granular material, and the display of the scale 100 is read. The deviation error is the difference between the weight of the granular material weighed in advance and the displayed value. The moving counterweight 302 is moved to set the second position of the forward end so that the weight of the granular material weighed in advance and the displayed value are within the allowable range.

(3) At the time of discharging the granular material, the length between the origin position of (1) and the position of (2) and the state where the granular material container 11 is empty and filled with the granular material Based on the ratio between the difference in the weighed value (that is, the amount of powder when the powder container 11 is filled with powder) and the change in the weighed value of the weighing device 100 (that is, the amount of powder Discharge amount), the counterweight 302 is moved toward the origin. Note that the laser sensor 25 may be provided and the counterweight 302 may be moved based on the change in the height of the powder surface measured by the laser sensor 25 .

By the way, in the subtraction type supply amount measuring device 300, a control device for driving and controlling the linear motion slider 302S for moving the moving counterweight 302, the slider 37S for linearly moving the shutter member 37, and the supply motor 14. 304 are placed outside the base 301 to reduce the load on the scale 100 .

Here, if the external control device 304 and the linear motion slider 302S or the like are directly connected by a wiring cable, an error occurs in the measured value due to the rigidity of the wiring cable.

On the other hand, in the subtraction type supply amount measuring device 300 of the present embodiment, as shown in FIG. The relay section 305 has an apparatus-side relay terminal 306 fixed on the base 301 , an external-side relay terminal 307 arranged outside the base 301 , and a crossover terminal 308 in the shape of an inverted barbed wire.

As shown in FIG. 23(A), the device-side relay terminal 306 and the external-side relay terminal 307 each include bases 306D and 307D, insulator bases 306E and 307E on the bases 306D and 307D, and insulator base 306E. , 307E. The receiving terminals 306F and 307F are conductive, and have cylindrical portions 306F1 and 307F1, and bulging portions 306F2 and 307F2 formed by upwardly bulging upper surfaces of the cylindrical portions 306F1 and 307F1. The receiving terminal 306F of the device-side relay terminal 306 is connected to the direct-acting slider 302S, the slider 37S, and the supply motor 14 by the wiring cable 306A, and the receiving terminal 307F of the external-side relay terminal 307 is connected to the control device by the wiring cable 307A. 304.

The crossover terminal 308 is a conductive strip member, and is formed with receiving portions 308A that bulge upward at both ends to receive the bulging portions 306F2 and 307F2 of the receiving terminals 306F and 307F. , 307F. A weight 308B is provided at the central portion of the crossover terminal 308, and the receiving portion 308A is urged downward to maintain contact with the bulging portions 306F2 and 307F2 of the receiving terminals 306F and 307F. If the crossover terminal 308 is bilaterally symmetrical, the center of gravity is at the weight 308B of the reverse scaffold. When receiving terminals 306F and 307F are horizontal, the weight of transition terminal 308 is evenly applied to both receiving terminals 306F and 307F. If there is a difference in height between the receiving terminals 306F and 307F, the weight of the transition terminal 308 is greater on the lower side, but the weight on the lower side is always constant.

Through these transition terminal 308, receiving terminals 306F, 307F, and wiring cables 306A, 307A, linear motion slider 302S, slider 37S, and supply motor 14 are connected to control device 304, receive power and signals, and are controlled. As shown in FIG. 24, the device-side relay terminal 306, the external-side relay terminal 307, and the crossover terminal 308 are provided for each device, and the crossover terminals 308 are arranged parallel to each other. As a result, the weight of the transition terminal 308 is applied to both contacts of the receiving terminals 306F and 307F.

Thus, in this embodiment, the movable direct-acting slider 302S, the slider 37S, and the wiring cable 306A connected to the supply motor 14 are connected to the device-side relay terminal 306 on the base 301. FIG. Since the relay terminal 306 on the device side and the relay terminal 307 on the external side are connected by a strip plate-shaped crossover terminal 308, wiring is not required as opposed to a general wiring method in which 306 and 307 are directly connected by a wiring cable. The weighing value of the weighing scale 100 can be stabilized without being affected by the stiffness of the cable.

[Modification]
(1) As shown in FIGS. 25 and 26, the cross-over terminal 308 may be configured in an inverted harpoon shape by bending a linear member or band plate member downward. 25 and 26, recesses are formed in receiving terminals 306F and 307F, and by receiving protrusions formed in transition terminal 308, receiving terminals 306F and 307F and transition terminal 308 are connected. are in contact and electrically connected.

(2) As shown in FIG. 27, the upper surfaces of the receiving terminals 306F and 307F may be flat, and the terminals 308 may be in contact with the flat surfaces.

(3) As shown in FIG. 28, a pin hole 308P is formed in the connecting terminal 308, and pins 306P and 307P are formed on the upper surfaces of the receiving terminals 306F and 307F to be received in the pin hole 308P. It may be in the form of restricting movement.

(4) As shown in FIG. 29, the transition terminal 308 is fixed to one of the receiving terminals (for example, the receiving terminal 306F of the device-side relay terminal 306) by a conductive hinge 308T, and the other receiving terminal (for example, the , and the receiving terminal 307F) of the external relay terminal 307 may be electrically connected by contact. It is preferable to apply conductive grease to the hinge portion 308T1 of the hinge 308T so as to fill the clearance.

(5) In the modification shown in FIG. 30, a screw type terminal block 310 connected to the device side relay terminal 306 is arranged on the base 301, and a screw type terminal block 310 connected to the external side relay terminal 307 is provided outside the base 301. A type terminal block 310 is arranged. An output terminal 310S is provided on the screw type terminal block 310, and the output terminal 310S and the device side relay terminal 306 and the external side relay terminal 307 are connected by a wiring cable 310A. The screw-type terminal blocks 310 are connected to each other by flexible coated annealed copper stranded wires 311 . Specifically, crimp terminals 311A are provided at both ends of the flexible coated annealed copper stranded wire 311, and the crimp terminals 311A and output terminals 310S are fastened together to the screw type terminal block 310 with screws 310N. A stranded wire 311 is connected to the output terminals 310S of both screw terminal blocks 310 . When the screw-type terminal blocks 310 are horizontal to each other, if the flexible covered annealed copper stranded wire 311 is attached in the vertical direction, the weight is evenly applied to both receiving screw-type terminal blocks 310 . If the screw type terminal block 310 has a difference in height, the weight of the flexible coated annealed copper stranded wire 311 is increased by the difference in length, but the weight on the higher side is always constant. In this case, even if the flexible coated annealed copper stranded wire 311 has some rigidity, the force of the rigidity acts in the horizontal direction, so there is no effect in the direction of gravity, so the weighing value of the weighing scale 100 can be stabilized. .

[Sixth Embodiment]
In this embodiment, a pipe 315 for flowing fluids such as pressurized air, hydraulic oil, water, etc., and vacuuming is connected to the subtraction type supply metering device 300 of the fifth embodiment. ing. Specifically, as shown in FIG. 31 , an apparatus side manifold 312 is arranged on the base 301 and an external side manifold 313 is arranged outside the base 301 . The device-side and external-side manifolds 312 and 313 have a configuration in which passages extending from two openings 312A and 313A communicate with each other inside. , an elbow rotary joint joint 314 and a pipe 315 . The elbow rotary joint joint 314 has an internal bearing 314A and can rotate 360° about the lock thread centerline.

Another opening 313A2 of the external side manifold 313 is connected to a fluid device such as a compressor through a pipe 313P, and another opening 312A2 of the apparatus side manifold 312 is used to supply, for example, the powder container 11, water, or hydraulic oil. It is connected to equipment as required, such as equipment to be used, via a pipe 312P.

With such a configuration, even if fluid flows through the pipes 315, 312P, and 313P, the rotation of the bearing 314A of the elbow rotary joint 314 causes the rigidity of the pipe 315 to affect the weighing value of the scale 100. is the rotational resistance of the bearing 314A of the elbow rotary joint joint 314. Although the weight cannot be measured by direct piping, the weight error can be reduced, and the measured value of the weighing device 100 is stabilized.

[Modification]
(1) As shown in FIG. 32, a plurality of elbow rotary joint joints 314 may be used to bend the device side manifold 312 and the external side manifold 313 at a plurality of points. In this case, the rigidity of the piping is canceled by the elbow rotary joint 314 provided in the XYZ directions, and the weight applied to the device side manifold 312 and the external side manifold 313 is made constant. Although the weight cannot be measured by direct piping, the weight error can be reduced, and the measured value of the weighing device 100 is stabilized.

[Seventh embodiment]
A subtractive supply amount metering device 350 of the seventh embodiment will be described with reference to FIGS. As shown in FIG. 33 , the subtraction type supply metering device 350 is configured by fixing a powdery or granular material container 351 on a metering device 100 . The granular material container 351 has a shape combining a rectangular cylinder and a half-cylinder, and is arranged so that its cylindrical surface 351A faces downward. As shown in FIG. 34, inside the granular material container 351, a rotating arm 355 that rotates about a rotation shaft extending in the horizontal direction is disposed to remove powder adhering to the inner surface of the granular material container 351. Scrape off the granules.

Below the granular material container 351, a granular material passage 352 extending in the axial direction of an imaginary cylinder having a cylindrical surface 351A is arranged. are in communication. The granular material passage 352 extends to a position outside the scale 100 when viewed from above, and a discharge container 360 is arranged at its end. In addition, a spiral blade 353 is arranged in the powder passage 352, and the powder falling from the powder container 351 into the powder passage 352 is moved to the discharge container 360 side by the rotation of the spiral blade 353. sent to.

As shown in the figure, the discharge container 360 has a cylindrical shape, and has a lower end and a A bottom wall member 361 having a narrow discharge guide portion 361A is attached. A rotary drive shaft 362A driven by a motor 362 is arranged in the center of the discharge container 360, and a scraper 363 is provided at the lower end of the rotary drive shaft 362A. The scraper 363 of this embodiment has the same shape as the scraper 68 of the third embodiment. Further, in the present embodiment, similarly to the third embodiment, the rotary drive shaft 362A is provided with a turning leg portion 362B.

As shown in FIG. 35, the bottom wall member 361 has a mesh member 364 and a shutter member 366, like the bottom wall member 69 of the above embodiment.

As shown in FIGS. 33 and 34, in this embodiment, a counterweight 370 is arranged on the scale 100. As shown in FIGS. This counterweight 370 may be fixed or may be movable as in the sixth embodiment. Further, the subtraction type supply metering device 350 of the present embodiment is provided with a relay section 375 similar to the relay section 305 of the sixth embodiment.

[Eighth embodiment]
Based on FIG. 36, the supply amount measuring device 450 of the eighth embodiment will be described. As shown in FIG. 36 , the subtraction type supply metering device 450 is configured by fixing a powdery or granular material container 451 on a metering device 100 . The granular material container 451 has a cylindrical shape with a bottom, and is connected to a chute 452 extending obliquely downward from a part of the outer edge of the lower end of the granular material container 451 . The chute 452 extends to a position outside the weighing scale 100 when viewed from above, and at its end, a discharge container 360 is arranged as in the seventh embodiment.

A rotary table 453 driven by a motor 453M to rotate on the bottom surface is arranged in the granular material container 451 . The rotary table 453 has a horizontally extending disk shape and rotates about the central axis of the granular material container 451 to transfer the granular material in the granular material container 451 in the circumferential direction. A discharge scraper 454 is arranged near the entrance of the chute 452 in the granular material container 451 . The discharge scraper 454 receives the granular material transferred by the rotation of the rotary table 453 and guides it to the chute 452 . Then, the granular materials that have passed through the chute 452 are supplied to the discharge container 360 . Note that the discharge scraper 454 is configured to rotate around a rotation shaft 454J to change the angle.

Alternatively, the chute 452 may not be provided, and the granular material may be directly supplied from the granular material container 451 to the discharge container 360 . Further, the subtraction type supply amount measuring device 450 of this embodiment may also be configured to have a counterweight 370 on the weighing scale 100 in the same manner as the subtraction type supply amount measuring device 350 of the seventh embodiment. The counterweight 370 may be fixed or movable as in the sixth embodiment. In addition, a configuration including a relay unit 375 may be employed, like the relay unit 305 of the sixth embodiment.

[Ninth Embodiment]
A granular material supply device 500 of the ninth embodiment will be described with reference to FIGS. As shown in FIGS. 37 and 38, the powdery material feeder 500 has a powdery material container 501 having a shape in which a large-diameter cylinder and a small-diameter cylinder arranged in parallel are connected in the radial direction. . The large-diameter cylindrical portion of the granular material container 501 serves as a granular material containing portion 502 capable of supplying the granular material from above. It is a granular material discharging section 510 capable of discharging the granular material from the section. As shown in FIG. 37 , the lower end of the granular material discharging section 510 is located below the lower end of the granular material accommodating section 502 . In addition, the upper surface of the granular material accommodating portion 502 is closed with a lid 502U. The lower end of the granular material discharging section 510 may be at the same height as the lower end of the granular material accommodating section 502 .

A rotating vane 503 driven by a motor 503M to rotate on the bottom surface is provided in the granular material container 502 . As shown in FIG. 38, the rotary vane 503 has four substantially triangular vanes 503A extending outward from the center of the bottom surface of the granular material accommodating portion 502 while narrowing, and rotating around the central axis. Rotate. When the rotary vane 503 rotates, the granular material at the bottom of the granular material accommodating section 502 is transported outward along the side surface of the vane 503A. Then, at the communicating portion between the granular material containing section 502 and the granular material discharging section 510 , the powder guided outward moves from the granular material containing section 502 to the granular material discharging section 510 . The rotary blade 503 may be in contact with the bottom surface of the granular material containing section 502 or may have a clearance therebetween.

By the way, as shown in FIGS. 37 and 38 , in the communicating portion between the granular material accommodating portion 502 and the granular material discharging portion 510 , there is provided a connecting portion which hangs down from the ceiling portion and between the bottom surface of the granular material accommodating portion 502 . A regulation wall 504 forming a gap 505 is provided. This prevents a large amount of powder from flowing into the powder discharge section 510 .

The granular material discharge part 510 has substantially the same configuration as the granular material container 11 (see FIG. 12) of the granular material supply device 60 of the second embodiment, and includes a rotary drive shaft 511, a baffle body 512, and a linear blade 513. , a scraper 514 , a curved blade 515 , a mesh member 516 and a shutter member 617 .

In addition, as shown in FIG. 39, the blade 503A of the rotary blade 503 may be curved forward in the direction of rotation. Furthermore, other shapes may be used as long as they are rotary vane shapes in which the particles move outward from the central axis.

[Tenth embodiment]
Based on FIG. 40, the granular material supply device 550 of the tenth embodiment will be described. The granular material supply device 550 of the present embodiment differs from the granular material supply device 500 of the ninth embodiment in the configuration of the granular material accommodating section 502 . Specifically, as shown in FIG. 40 , a female screw portion 501A is formed on the upper inner surface of the powdery or grainy material storage portion 502 of the powdery or grainy material container 501 . A male screw portion 551A is formed at the upper end portion of the female screw portion 501A, and a bottle 551 containing powder or granular material is mounted upside down. When the bottle 551 is attached, the bottle 551 is arranged so that the opening is positioned upward (so that the male screw portion 551A is positioned upward), and the powdery or grain container 501 is placed so that the female screw portion 501A is positioned downward. and screw them together. Then, the bottle 551 and the granular material container 501 are turned upside down and used.

[Modification]
As shown in FIG. 41, a through hole 501B extending in the circumferential direction is formed in the upper part of the powder containing portion 502 of the powder containing container 501 instead of the female screw portion 501A. The bottle 551 may be fixed to the granular material container 501 by attaching the fixture 552 to the container 501 . The fixture 552 shown in FIG. 42 is made of a metal or resin band plate, and includes an arc portion 553 extending along the arc of the granular material container 501 and extending radially inward from one end of the arc portion 553 . A bent portion 554 that is bent and extends linearly, a bent portion 555 that is bent outward from the end of the bent portion 554 and extends outward from the bent portion 554 , and a tip of the bent portion 555 that is bent at a substantially right angle. and a handle portion 556 extending inward. As shown in FIG. 41, the connecting portion between the bent portion 554 and the folded portion 555 is narrower than the other portions and serves as a fitting portion 557 that fits into the valley portion of the male screw portion 551A of the bottle 551. .

The fixture 552 has the other end of the arc portion 553 fixed to the granular material container 501 by a screw 560 . The fixing member 552 is elastically deformed starting from the screw 560, and the fitting portion 557 is pressed against and fitted to the valley portion of the male thread portion 551A of the bottle 551, and the bottle 551 is fixed to the granular material container 501. be. When the bottle 551 is to be removed, the handle portion 556 is pulled outward to disengage from the bottle 551 and the bottle 551 can be removed.

The fixture 552 is not fixed by the screw 560, but is made slidable in the inward and outward directions (the front-rear direction in FIG. 41). It is good also as a structure fitted in a part. Further, the bottle 551 may be provided with fitting means other than the male screw portion 551A.

The regulating wall 504 (see FIGS. 37 and 38) in the ninth embodiment is provided on the inner wall of the powder container 501 of this embodiment, and a large amount of powder is discharged from the powder container 502 to the powder discharge unit 510. It may be configured to control the inflow of particles.

[Other Modifications]
As described above, the present invention has been described with specific embodiments and modifications, but the present invention is not limited to the above-described embodiments. It is included in the range, and besides the following, various changes (eg, shape, operation mechanism, size, design, etc. of each part) can be made without departing from the spirit of the invention.

(1) As shown in FIG. 43(A), the sizes of the powder passage holes 34 of the mesh members 33, 62, 364 (mesh member 62 in the figure) may be different for each row.

(2) As shown in FIG. 43(B), the mesh members 33, 62, 364 (mesh member 62 in the figure) are divided to form vertically elongated passage holes 34T extending linearly therebetween. At the same time, one divided body may have a configuration in which a mesh 400 is attached to the opening 34K. Note that the divided body to which the mesh 400 is attached may be arranged at any position according to the discharge amount.

(3) As shown in FIG. 44(A), the size of the opening 38A of the mesh support 38 may be reduced in accordance with the discharge amount. When the size of the opening 38A is reduced, if the large passage hole 34A, the middle passage hole 34B, and the small passage hole 34C of the mesh member 33 are arranged in accordance with the reduced diameters, the contents described in the first embodiment can be achieved. You can get the same effect.

(4) When using the mesh member 62 of FIG. 43(B), as shown in FIG. 44(B), the mesh support 38 may be provided with ribs 38L for preventing the mesh 400 from sagging.

(5) As shown in FIG. 45, a plurality of discharge nozzles 39 having different tip diameters may be prepared and configured to be convertible according to the diameter of the container 210 to which the granular material is supplied. Further, the discharge nozzle 39 may have a configuration in which the tip diameter can be changed.

Moreover, when using the mesh support 38 of FIG. 44(A), the discharge nozzle 39 of FIG. 45(B) or (C) may be used.

(6) As shown in FIG. 46(A), the lower end of the scraper 68 may be horizontal.

(7) As shown in FIG. 46B, the lower end of the extended portion 68B1 of the scraper 68 may be inclined upward from the proximal end toward the distal end. In this case, the amount of discharge in the central portion is reduced.

(8) As shown in FIG. 46(C), the lower end of the first hanging wall 68B of the scraper 68 is inclined upward toward the outside, and the lower end of the second hanging wall 68C is the lowest end of the first hanging wall 68B. It may be located above the part (central side end part). In this case, if the scraper 68 is rotated at a low speed, it is possible to make the discharge amount in the central portion larger than the discharge amount in the surrounding area.

(9) As shown in FIGS. 47(A) to 47(C), hanging portions 308S that hang downward are provided near both ends of the transition terminal 308, and the lower ends of the hanging portions 308S are connected to the insulator bases 306E and 307E by hinge members 308H. may be rotatably fixed to the In the figure, the receiving terminals 306F and 307F are pushed up by the spring 401 and come into point contact with the transition terminal 308, thereby conducting between them.

(10) As shown in FIGS. 47(D) and (E), the transition terminal 308 may be T-shaped and supported at three points. In this case, contact and conduction between the receiving terminals 306F, 307F and the transition terminal 308 are stabilized.

(11) As shown in FIG. 48, in the subtraction type supply metering device 300 of the sixth embodiment, a sealed container 404 surrounding the granular material container 11 is provided. A configuration in which a feeding pipe 312P is connected may be used. Further, in the subtraction type supply quantity metering device 300 shown in FIG. be prevented. Further, the granular material discharged from the granular material discharge port 20 of the granular material container 11 is sent through the granular material discharge transportation pipe 406 .

In addition, by vacuuming through the pipe 312P, it is possible to send the weighed powder through the powder discharge transport pipe 406 to the vacuum vessel below. Furthermore, by vacuuming and sucking from the vacuum container side to which the granular material discharging/transporting pipe 406 is connected, the granular material weighed under vacuum can be delivered. In this case, the pipe 312P becomes a leak pipe for the amount of gas required for vacuum suction.

(12) As shown in FIG. 49 , in a subtractive supply metering device 300 , the base 301 may be supported by a plurality of meters 100 . In this case, the measured value of each weighing device 100 is totaled and divided by the number of weighing devices 100 to obtain the value of the weighed object. From the structure of the weighing scale 100, it is most stable when three weighing scales are used for three-point support.

(13) The through hole 31A of the mounting plate 31 may be rectangular, the tip of the shutter member 37 may be straight, and the overall shape of the shutter member 37 may be rectangular or polygonal. Accordingly, the through hole 31A of the mounting plate 31 and the discharge nozzle 39 may be rectangular or polygonal.

(14) In FIG. 12, the bottom wall of the second cylindrical body 11B is thicker than the side wall, and a through hole 11K is formed in the center. However, the inside of the granular material container 11 may be composed only of the cylindrical inner large diameter accommodating portion 12A without providing the small diameter accommodating portion 12B (see FIG. 17). In this case, the curved blade 18 is not provided, and the dimensions of the upper side portion 61A of the scraper 61 and the swivel band 61D may be made to match the diameter dimension of the large-diameter accommodating portion 12A.

(15) In the above-described fourth embodiment, as shown in FIG. 50, a hollow motor is used as the supply motor 14, and the rotary drive shaft 14A is formed in a hollow cylindrical shape. A sub-supply motor 14Z may be provided that rotates a sub-rotation drive shaft 14W that is inserted and has a scraper 68 at its tip. In this case, the rotary drive shaft 14A, the spiral blade 14R fixed to the rotary drive shaft 14A, and the scraper 68 are driven separately, and it is also possible to vary the rotational speed. Further, this configuration may be applied to other embodiments. For example, when applied to the granular material supply device 60 of the second embodiment, the straight blades 16 and the curved blades 18 are driven by the supply motor 14 together with the baffle body 15. The scraper 61 may be driven by the sub-supply motor 14Z.

(16) In the granular material supply device 10 of the first embodiment, as shown in FIG. Alternatively, a large number of capacitance type sensors may be attached to the outside of the granular material container 11 to measure the height of the powder surface of the contained granular material.

(17) The arrows indicating the direction of rotation in the drawings described in the description of each of the above embodiments are shown as one form, and may be configured to act in the opposite direction of rotation, for example.

(18) The crossover terminal 308 may be of any shape as long as it has a structure similar to a knife switch or a mechanism that allows electrical connection without giving fluctuations in the direction of gravity.

(19) Instead of the transition terminal 308, a non-contact power supply signal transmission system may be used.

(20) As shown in FIG. 8, since the degree of opening and closing of the granular material discharge port 20 is changed stepwise between the fully open state and the fully closed state, the mesh member can be a woven mesh, a lattice mesh, or an expanded mesh. A uniform mesh member such as metal or punching metal may be used.

(21) As shown in FIGS. 1, 2, and 3, the first cylindrical body 11A and the second cylindrical body 11B are configured to be fastened by screws on the flange portion. system, and other fastening structures such as a ferrule clamp system.

(22) The movable counterweight 302 by the linear motion slider 302S described in the fifth embodiment may be of a drawbridge type, and may be a rotating counterweight mechanism that balances the weight change between the upside down position and the horizontal position. .

(23) Ejection storage of the second embodiment, the third embodiment, FIG. 19 of the modification (1), FIG. 20 of the modification (2), the fourth embodiment, and the seventh embodiment As shown in FIG. Since the degree of opening and closing of the granular material discharge port 20 is changed stepwise between the state and the fully closed state, a mechanism that does not use the mesh member 33 may be used.

(24) The first embodiment, the third embodiment, FIG. 19 of the modified example (1), FIG. 20 of the modified example (2), the fourth embodiment, and the discharge container of the seventh embodiment 360, the shutter member 37 of FIG. It may be a mechanism.

(25) In the above-described first embodiment and the above-described second embodiment, the weight of the granular material to be put into the granular material container 11 is measured in advance, and the weight of the granular material is placed on the weighing pan 101 of the weighing instrument 100. , using a program for cumulatively subtracting the amount of powder or grain supplied to the container 210 and obtaining the remaining amount of powder or grain in the powder or grain container 11, according to the remaining amount in the powder or grain container 11, It controls the supply motor 14 , the shutter member 37 and the vibrator 35 . Alternatively, a mechanism that does not use the laser sensor 25 may be used by using a configuration that outputs a signal at a desired remaining weight after determining the weight of the granular material replenishment timing in the granular material container 11 .

(26) The bottom wall member 30 in the above embodiment may be provided in an auger feeder.

(27) The scraper 61 of FIG. 13 has one hanging wall of the swirl band 61D, and the scraper 68 of FIG. 18 has two hanging walls of the swirling band 61D. You may use it as a hanging wall of

(28) In the fifth and sixth embodiments, the weighing pan 101 is placed on the base 301, which is larger than the weighing pan 101 of the weighing scale 100. A base 301 equivalent to or smaller than the weighing pan 101 may be provided. Alternatively, the container 210 may be placed directly on the weighing pan 101 .

(29) In the sixth embodiment, the pipe 315 is installed horizontally, but a flexible pipe such as a flexible metal pipe, a flexible rubber pipe, or a flexible pipe may be provided as shown in FIG. It may be attached in a U shape as indicated by a two-dot chain line, or in a notched circle shape starting from a bearing 314A connected to the device side manifold 312 and the external side manifold 313, respectively. At this time, the flexible tube may be directed downward or upward. If the device-side manifold 312 and the external-side manifold 313 are horizontal, the load of the flexible tube is evenly applied to both.

(30) In the above embodiment, the movable range of the shutter members 37, 366 is from the fully open state to the fully closed state, but it may be up to an intermediate position. Also, the shutter members 37 and 366 may be moved stepwise or continuously.

(31) As shown in FIG. 52 , in the tenth embodiment, the bottle 551 may be attached to the granular material container 501 via an adapter 570 . The adapter 570 is a cylindrical body having a through hole 571 in the center, and a male screw portion 570A is formed on the outer surface thereof to be screwed with the female screw portion 501A of the granular material container 501. An inner female threaded portion 571A is formed to be screwed with the male threaded portion 551A of 551 . According to this configuration, by preparing the adapter 570 , it becomes possible to use a plurality of types of bottles with one granule supply device 550 . In addition, since a small bottle can be used, the bottle storage space can be made compact.

[Eleventh embodiment]
A filter testing apparatus 600 according to the eleventh embodiment will be described below with reference to FIGS. 53 to 65. FIG. As shown in FIGS. 53 and 54, the filter testing apparatus 600 includes a square plate-shaped common base 601, a feeder casing 610 supported by outer struts 602 arranged at the four corners of the common base 601, and outer struts. and a filter casing 650 supported by four inner struts 603 arranged inside 602 and arranged below feeder casing 610 .

As shown in FIGS. 53 to 55, the feeder casing 610 includes a cubic case body 610A and a work door 610B for opening and closing an opening formed on one side surface of the case body 610A. An intake duct 610C is attached to the other side surface. Inside the feeder casing 610 are a feeder 620 that feeds test sample particles (pollen, viruses, bacteria, fine particles, and pseudo-powder thereof), and a first cone 640 that receives the particles fed from the feeder 620. and are arranged. As the pollen pseudo-powder, APPIE Ishimatsuko (median diameter: 30 to 40 μm, particle density: 1.05) and resin beads of the same diameter can be used.

In this embodiment, the weight of the particles supplied from the feeder 620 can be weighed by a scale 615 arranged inside the feeder casing 610 . The weight of feeder 620 is transmitted to scale 615 via a lifting bracket. The configuration of the granular material supply device disclosed in Japanese Patent No. 5055009 is applied to the supply device 620 of this embodiment.

The lower end of first cone 640 penetrates the bottom wall of feeder casing 610 . A silicon pipe 641 is fixed to the lower surface of the feeder casing 610 to cover the lower end of the first cone 640 from all sides. A connection tube ferrule and an introduction cone are connected to the silicon pipe 641 in this order from the top, and a filter casing 650 is connected to the introduction cone. Details of the silicon pipe 641, the ferrule of the connecting tube and the introduction cone are shown in FIGS.

As shown in FIGS. 58 to 62, the filter casing 650 has two axially aligned cylindrical bodies 651 and 652, between which a filter 590 (such as a mask) for testing particle collection efficiency is placed. It can be held. A foreign matter removing mesh 653 is provided at the upper end of the upper cylindrical body 651 . The foreign matter removing mesh 653 has holes large enough to allow the particles of the test sample to pass through but not to allow the lint to pass through.

As shown in FIG. 54, an exhaust cone 680 and an exhaust ferrule are attached to the lower portion of the filter casing 650, and the exhaust ferrule is connected to a suction pump 690 via an exhaust hose joint and an exhaust hose. Details of the exhaust cone 680 are shown in FIG.

The filter testing device 600 of this embodiment tests the particle collection efficiency of the filter 590 as follows. First, the filter 590 is fixed to the filter casing 650 . Aspiration is then initiated by the aspiration pump 690 to expel the particles from the feeder 620 . The feeder 620 is stopped when the particle discharge reaches a specified amount. After that, the suction pump 690 is stopped after a specified time has elapsed, and the amount of particles collected by the filter 590 is measured. Then, the particle collection efficiency of the filter 590 is calculated from the amount of discharged particles and the amount of collected particles.

Here, in this embodiment, power supply to the supply device 620 is performed by the power supply mechanism 630 . As shown in FIGS. 64 and 65 , the power feeding mechanism 630 has a plurality of transition terminals 632 straddling between a pair of terminal receiving portions 631 and 632 . One terminal receiving portion 631 of a pair of terminal receiving portions 631 and 632 is connected to the feeder 620 via a power supply cable 631A, and the other terminal receiving portion 632 is connected to a control portion (not shown). It is It should be noted that the power supply mechanism 630 may be configured as shown in FIGS. As a result, even in this embodiment, the weighing value of the weighing scale 615 can be stabilized without being affected by the rigidity of the wiring cable.

[Modification]
(1) As shown in FIGS. 66 to 68, a configuration may be adopted in which a pole base is bridged between the weighing device 615 and the pole support, and the feeder 620 is attached to the pole base. In this case, the value obtained by doubling the measured value of the weighing device 615 is the particle discharge amount.

(2) By using a feeder (nebulizer) for liquids, the collection efficiency of liquids (eg, blood, etc.) can also be tested. In addition, in the case of the blood collection efficiency test, it is conceivable to use artificial blood.

(3) It is also possible to perform a pressure loss test using the filter testing device 600 .

Reference Signs List 10, 60, 65, 70 powder supply device 11, 66 powder container 14A, 362A rotary drive shaft (rotating shaft)
20 Granule discharge port 25 Laser sensor (powder level measurement unit)
33, 62, 364 mesh member (blocking wall)
34 granular material passage hole 34A large passage hole (large granular material passage hole)
34B middle passage hole 34C small passage hole (small powder or grain passage hole)
35 oscillator (arch crushing means, vibrating part)
37,366 shutter member 61,68,363 scraper (arch crushing means, crushing arm)
100 Weighing device 210 Containers 300, 350 Subtractive supply amount measuring device 301 Base (mounting plate)
302 moving counterweight 304 control device (control unit)
305, 375 relay part 306 device side relay terminal 307 external side relay terminal 308 transition terminal 314 elbow rotary joint joint 314A bearing 360 container for discharge

Claims (1)

In a filter test device for testing the sample collection efficiency of a filter supported in the middle of a flow path,
a feeder disposed on the upstream side of the filter and feeding the sample contained in the container into the channel;
and a weighing device to which the weight of the feeder is transmitted and capable of measuring the change in the weight of the feeder as the amount of sample supplied.

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