JPH0562491U - Material input hopper for solid materials - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a material feeding hopper capable of appropriately supplying only a predetermined solid material to a transportation process without inadvertently damaging the solid material or mixing foreign matter. [Structure] The material feeding hopper body 1 has a material discharging cylinder 5
And a damper 8 for opening and closing the material discharge port provided below the cylindrical portion 5 so as to be rotatable in the vertical direction. In the material charging hopper for a solid material, the material discharging cylindrical portion 5 is fixed. The cylinder 5a includes a sliding cylinder 5 that is a separate body from the fixed cylinder 5a.
b projects downward from the fixed cylinder 5a and is fitted in a retaining state, and when the damper 8 contacts the bottom peripheral surface of the slide cylinder 5b to close the material discharge port 5c, The damper 8 is slidable in the vertical direction so that it can be pushed up.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a material feeding hopper for solid materials, which is preferably used in a pneumatic transportation system for pneumatically transporting solid materials such as tablets to a collector.

[0002]

[Prior Art]

 As a solid material feeding hopper having a damper that can be freely opened and closed at the bottom to collect solid material such as tablets, the one shown in Fig. 7 can be considered. This is one in which the material feeding hopper 100 is provided on the weighing tank 101, and a nylon cylindrical net 100b is connected to the bottom of the material feeding hopper main body 100a in order to prevent leakage of solid material. The lower opening of the cylindrical net 100b serves as the material discharge port 100c. In addition, a damper 102 that is rotatable in the vertical direction is provided below it in order to open and close the material discharge port 100c.

[0003]

[Problems to be solved by the device]

 However, in the case of such a structure, as shown in FIG. 8, in the closed state where the damper 102 is brought into contact with the lower portion of the cylindrical net 100b, the lower portion of the cylindrical net 100b becomes bellows-like, and Restores when opened. Therefore, if the opening / closing operation is repeated a large number of times, there is a problem that the lower part of the cylindrical net 100b is blown off and the lint is transported together with the solid material 103. As a measure to solve this, it is conceivable to use a hard tubular body instead of the cylindrical net 100b. Then, a solid material is provided between the rigid tubular body and the damper 102. When the 103 is sandwiched, the solid material 103 may be damaged by the strong pressing force of the damper 102. Therefore, it cannot be applied at all when the input material is a tablet or the like which is easily damaged. In view of the above points, the present invention is a material that can appropriately supply only a predetermined solid material to a transportation process without inadvertently damaging the solid material or mixing foreign matter other than the predetermined solid material. The purpose is to provide a charging hopper.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the material feeding hopper for a solid material according to the present invention proposed in claim 1 is such that a damper for opening and closing the material discharge port is vertically rotated at the bottom of the material feeding hopper body. This is an improvement of a material feeding hopper for a solid material that is freely provided, and a discharging cylinder part projecting below the material charging hopper main body has a sliding member separated from the cylinder part. The moving cylinder projects downward from the cylindrical portion and is fitted in a retaining state.When the damper contacts the bottom peripheral surface of the sliding cylinder and closes the material discharge port, The structure is such that it can be pushed up by a damper and slidable in the vertical direction. Further, the solid material charging hopper according to the present invention proposed in claim 2 is provided with an auxiliary cylinder body made of a flexible material such as a silicone resin below the material charging hopper body. The body flexes in the vertical direction when the damper contacts the bottom surface of the body to close the material discharge port.

[0005]

[Action]

 According to the material feeding hopper for solid material proposed in claim 1, the material can be discharged through the sliding cylinder protruding downward from the discharging cylinder, and the damper is provided on the bottom peripheral surface of the sliding cylinder. The material discharge can be stopped without leaking out by closing the material discharge port at the lower end of the sliding cylinder by abutting. Thus, when the material discharge port is closed, the sliding cylinder is pushed by the damper and rises slightly to complete the closing, so that the solid cylinder is placed between the bottom peripheral surface of the sliding cylinder and the damper. Even if the solid material is sandwiched, due to the upward escape of the sliding cylinder, the solid material is not strongly pressed between the two, and damage to the solid material is prevented. Further, according to the material input hopper of the solid material proposed in claim 2, the material discharge can be stopped by contacting the damper and closing the material discharge port formed at the lower end of the auxiliary cylinder. When the material discharge port is closed, the auxiliary cylinder is pushed by the damper. Also, since the auxiliary cylinder is made of a flexible material, even if a solid material is sandwiched between the bottom peripheral surface of the auxiliary cylinder and the damper, the lower end of the auxiliary cylinder is appropriately bent and the solid Material damage is prevented.

[0006]

【Example】

 Hereinafter, an embodiment of a material feeding hopper for solid material according to the present invention will be described based on a longitudinal side view of a main part of FIG. 1 and a schematic view of a transportation system of FIG. First, the transportation system shown in FIG. 2 is a pneumatic transportation system for pneumatically transporting solid materials such as tablets, and the material feeding hopper body 1 is connected to the starting end of the material transportation pipeline 2 via a measuring tank 3 and a valve housing 4. The end of the material transport line 2 is connected to a collector (not shown). Further, an umbrella-shaped valve body 11 is arranged at a connection port 10 between the measuring tank 3 and the valve housing 4, and a lifting means 12 for the umbrella-shaped valve body 11 is provided inside the valve housing 4. Reference numeral 14 is a hat for distributing the solid material 13.

In FIG. 1, the material feeding hopper main body 1 has an annular collar body 1 b having a diameter larger than that of an opening 3 b formed in the top plate 3 a of the weighing tank 3, and the annular collar body 1 b is the ceiling plate of the weighing tank 3. It is fixed by being placed on 3a. A material discharging cylinder 5 is provided at the bottom of the material feeding hopper main body 1. The material discharging cylinder 5 is a fixed cylinder 5a made of a resin having high strength such as polycarbonate, and durability such as Teflon. It is composed of a sliding cylinder 5b which is excellent in One fixed cylinder 5a is formed integrally with the material charging hopper body 1 by extending the bottom portion 1a of the material charging hopper body 1 downward (in the weighing tank), and using a vacuum device, tablets are formed. When powder of solid matter such as is removed, a large number of ventilation holes 5d are formed. The other sliding cylinder 5b is formed as a tubular body made of Teflon or the like having a slightly smaller diameter than the fixed cylinder 5a and having excellent durability, and is slidably fitted in the lower portion of the fixed cylinder 5a. ing. On the outer peripheral surface of the upper end of the sliding cylinder 5b, there is formed a second screw 7 which can be screwed into the first screw 6 formed on the inner peripheral surface of the lower end of the fixed cylinder 5a. The inner diameter of the second screw 7 is set to be slightly smaller than that of the other portion of the sliding barrel 5b, and the outer diameter of the second screw 7 is set to be slightly larger than that of the other portion of the sliding cylinder 5b. Therefore, in order to fit the sliding cylinder 5b into the fixed cylinder 5a, first screw both screws 6 and 7 and sequentially rotate the sliding cylinder 5b until the screwing is released and the upper feed is performed. do it. As a result, the sliding cylinder 5b is slidably fitted to the fixed cylinder 5a so as to project downward, and the lower opening of the sliding cylinder 5b serves as the material discharge port 5c. The packer type damper 8 is supported on the inner surface of the weighing tank 3 via a hinge 9 so as to be rotatable in the vertical direction, and is configured to be switched between a posture in which the material discharge port 5c is closed and a posture in which the material discharge port 5c is opened.

According to the above configuration, if the damper 8 is lowered in a state where the solid material 13 such as tablets is charged into the material charging hopper body 1, the solid material 13 is transferred from the material discharge port 5c into the measuring tank 3. Can be supplied. At the time of opening, the sliding cylinder 5b, which has slid down by its own weight, is in the state of protruding the lowest with respect to the fixed cylinder 5a, but the outer diameter of the second screw 7 is larger than the inner diameter of the first screw 6, Since the two can be engaged with each other, the sliding cylinder 5b does not fall out of the fixed cylinder 5a. When the solid material 13 is accumulated in the measuring tank 3 by a predetermined amount, the umbrella-shaped valve body 11 is opened and falls into the material transporting line, and is pneumatically transported to the collector. Next, if the damper 8 is raised and brought into contact with the bottom peripheral surface of the sliding cylinder 5b, the sliding cylinder 5b is pushed up by this, but since the contact state of both is maintained, the material The discharge port 5c is appropriately closed, and the falling of the solid material 13 can be stopped. At that time, the solid material 13 may be sandwiched between both the bottom peripheral surface of the sliding cylinder 5b and the damper 8. However, since the sliding cylinder 5b is pushed up by the damper 8 and escapes upward, it is possible to avoid the solid material 13 sandwiched between the sliding cylinder 5b and the solid material 13 from being suddenly strongly pressed. Is prevented from being damaged.

The present invention is not limited to the above embodiment, but as shown in FIG. 3, the sliding cylinder 5b is formed to have a larger diameter than the fixed cylinder 5a, and the first screw is formed on the outer peripheral surface of the lower end of the fixed cylinder 5a. Even if 6 is formed and the second screw 7 is formed on the inner peripheral surface of the upper end of the sliding cylinder 5b, the same operational effect as that of the above embodiment can be obtained. The screws formed on the fixed cylinder 5a and the sliding cylinder 5b may be spacing screws. Further, in the above embodiment, the fixed cylinder 5a is formed by extending the bottom portion 1a of the charging hopper main body 1 downward, but as shown in FIG. 4, the fixed cylinder 5a extended downward on the back surface of the spatula plate of the weighing tank 3. May be formed, and the sliding cylinder 5b may be fitted to the fixed cylinder 5a. In the present invention, it is not always necessary to form a screw on the fixed cylinder 5a or the sliding cylinder 5b. For example, as shown in FIG. 5, a large-diameter flange 7a is formed on the upper outer peripheral surface of the sliding cylinder 5b, and a small-diameter flange 7a that can be engaged with the flange edge 7a is formed on the lower inner peripheral surface of the fixed cylinder 5a. The edge 6a may be formed. In such a case, it is possible to insert the sliding cylinder 5b from the upper side of the fixed cylinder 5a when assembling it, but preferably, the brim 6a is formed of a ring member or the like which is detachable from the fixed cylinder 5a. It is convenient to be able to provide the brim 6a after inserting the sliding cylinder 5b from the lower side of the fixed cylinder 5a. FIG. 6 shows a material feeding hopper proposed in claim 2, wherein the material feeding hopper main body 1 is provided at its bottom with an auxiliary cylinder 14 made of silicone resin or the like. When the damper 8 comes into contact with the bottom peripheral surface of the damper 8 to close the material discharge port, the end portion is bent in the vertical direction as shown in the figure. In addition, 14a is a ventilation hole formed when powder removal of a tablet is performed using a vacuum device.

[0010]

[Effect of the device]

 As is clear from the above description, according to the present invention proposed in claim 1, when the material discharge port of the material input hopper is closed by the damper, the damper and the bottom peripheral surface of the sliding cylinder are interlocked with each other. Even if the solid material is sandwiched between the two, it is possible to prevent the solid material from being strongly pressed by the escape action of the sliding cylinder. Therefore, there is an excellent effect that a solid material such as a tablet which is likely to be damaged can be appropriately supplied without being damaged. Further, in the present invention, since it is not necessary to form the sliding cylinder with a soft member unlike the conventionally used cylindrical net, it is possible to appropriately eliminate the risk of the inclusion of lint due to a large number of repetitions. There are advantages. Further, according to the present invention proposed in claim 2, an auxiliary cylinder body made of a flexible resin such as silicon is provided at the bottom of the material feeding hopper body, and the damper contacts the bottom peripheral surface thereof. When the material discharge cylinder is closed by the damper, the damper is pushed up so that it bends in the vertical direction as much as possible.Therefore, there is no risk of mixing lint, and the material discharge port of the material discharge cylinder is Even when closed, even if the solid material is sandwiched between the end portion of the auxiliary cylinder and the damper, it is possible to prevent the solid material from being caught and damaged.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a main part of a material feeding hopper showing an embodiment of the present invention described in claim 1.

FIG. 2 is a vertical sectional side view schematically showing the transportation system.

FIG. 3 is a vertical sectional side view of a main part of a material feeding hopper showing another embodiment of the present invention.

FIG. 4 is a side view of a longitudinal section of a main part of another embodiment of the present invention.

FIG. 5 is a vertical sectional side view of a main part of the other embodiment.

FIG. 6 is a vertical sectional side view of an essential part showing an embodiment of the present invention described in claim 1.

FIG. 7 is a vertical sectional side view showing an example of a conventional material charging hopper.

FIG. 8 is a side view of the same state where the cylindrical net is contracted.

[Explanation of symbols]

 1 Material input hopper main body 5 Material discharging cylinder 5a Fixed cylinder 5b Sliding cylinder 5c Material discharging port 6 First screw 7 Second screw 8 Damper 13 Solid material 14 Auxiliary cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Innovator Sada Miwa 54-23, Fuji Village, Mishima City, Shizuoka Prefecture 54-23 (72) Inventor, Kazuei Murata 2-7-2 Asuka Minamino, Ikoma City, Nara Prefecture

Claims (2)

[Scope of utility model registration request] 1. A material input hopper for a solid material, comprising a damper for opening and closing a material discharge port provided at the bottom of the material input hopper body so as to be vertically rotatable. A sliding cylinder, which is a separate body from the cylindrical part, is fitted to the protruding discharge cylinder part so as to project downward from the cylindrical part and is in a retaining state. A material feeding hopper for solid material, which is slidable in the vertical direction so that it can be pushed up by the damper when it comes into contact with the bottom peripheral surface and closes the material discharge port. .. 2. A material input hopper for solid material, wherein a damper for opening and closing the material outlet is provided at the bottom of the material input hopper main body so as to be vertically rotatable. Is provided with a flexible auxiliary cylinder made of silicone resin or the like, and the lower end of the auxiliary cylinder is vertically moved when the damper contacts the bottom peripheral surface of the auxiliary cylinder to close the material discharge port of the auxiliary cylinder. Material input hopper for solid materials, characterized by being able to bend in the direction.