JP2505899Y2 - Filling and weighing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a filling and weighing device for supplying a desired amount of powder or granular material to a container.

(Prior Art) Conventionally, when supplying a desired amount of powder or granules to a container, generally, a desired amount of powder or granules was weighed in advance and the container was filled with the powder.

In addition, when the powder and granular material is supplied, for example
As described in the publication, there is a supply device having a structure in which a bellows-shaped expandable pipe is provided in a part of the supply pipe and the end of the supply pipe is pressed against the opening of the container by an elevating device.

(Problems to be solved by the invention) However, in the above-described conventional method, when the pre-weighed powder or granules are filled in the container, some of the powder or granules remain without being filled in the container for some reason. However, the amount of powder or granular material supplied to the container was not always accurate.

Further, in the above-described conventional supply device, the granular material may adhere to the inner surface of the bellows-shaped expandable tube to inhibit expansion and contraction, or the granular material may contact the expandable tube and wear the inner surface.

(Means for Solving the Problems) In order to solve the above problems, the filling and weighing device of the present invention is
A weighing device, a frame body fixed to the weighing device in a weighted state and having a container placed therein, and an upper end portion loosely fitted to an outer periphery of a terminal end portion of a supply pipe for supplying powder particles to the container. A first frame body fixed to the frame body, a second frame body loosely fitted to the outer periphery of the first cylinder body, and a lower end of the second cylinder body fixed to the frame body. A pressing device that presses a portion against an opening / closing valve device attached to the upper end of the container, and a tubular shape interposed between the outer periphery of the terminal end of the supply pipe and the outer periphery of the upper end of the first tubular body. A first cover body that is vertically expandable and contractible,
The pressing device is provided with a tubular second cover body which is interposed between the outer circumference of the upper end portion of the first tubular body and the outer circumference of the upper end portion of the second tubular body and is vertically expandable and contractible. By pressing the lower end of the second tubular body against the on-off valve device by
When the on-off valve device is opened, the supply pipe and the inside of the container communicate with each other through the first and second cylinders, and at this time, the lower end of the first cylinder is the upper end of the second cylinder. It is configured to be located on the lower side than the above.

(Operation) The container is placed on the frame body, and the lower end portion of the second tubular body is pressed by the opening / closing valve device by the pressing device. Next, by opening the on-off valve device and supplying the powdery particles through the supply pipe, the powdery particles are filled from the terminal end of the supply pipe to the inside of the container through the first and second cylinders. It As a result, the weight value of the weighing device increases, and when the increased value reaches a desired value, the supply device is stopped and the opening / closing valve device is closed.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a partially cutaway side view of a filling and weighing device according to an embodiment of the present invention, and FIG. 2 is a cutaway front view of the same portion. A weighing device 2 installed on a floor 1 has a frame body 3. The weight is fixed. That is, the frame 3 is always weighed by the weighing device 2. Four support legs 4 are fixed to the lower end of the frame body 3, and the container 5 is supported by these support legs 4. An opening / closing valve device 6 such as a butterfly valve is installed at the upper end of the container 5, and by opening the opening / closing valve device 6, it becomes possible to supply the granular material to the container 5. Near the center of the upper end of the frame body 3, the end portion of the supply pipe 7 for supplying the powdery or granular material to the container 5 is located, and the outer periphery of the end portion of the supply pipe 7 is fixed to the frame body 3. 1 cylinder 12
The upper end of is loosely fitted. A second cylindrical body 14 having a cylindrical shape whose lower end is expanded is loosely fitted around the outer periphery of the first cylindrical body 12, and a bracket 15 having a substantially annular shape is fitted around the lower end of the second cylindrical body 14.
Are concentrically fixed. The bracket 15 has a frame 3
Is supported slidably in the vertical direction by a tip end portion of a piston rod 17a of an air cylinder device 17 serving as a pressing device fixed to the upper end portion of the frame 3 and a bracket 18 fixed to the upper end portion of the frame body 3. The lower ends of a plurality of guide rods 19 serving as guide devices are fixed. Supply pipe 7
Between the outer periphery of the end portion of the and the outer periphery of the upper end portion of the first cylindrical body 12,
For example, a tubular first cover body 20 which is made of cloth or the like and is capable of expanding and contracting in the vertical direction is interposed, and the outer circumference of the upper end portion of the first tubular body 12 and the outer circumference of the upper end portion of the second tubular body 14 are provided. Between the second cover body 21 made of, for example, cloth, which is tubular and is vertically expandable and contractible.
Is interposed. The lower end of the first cylinder 12 has a second cylinder
In the state where 14 is lowered to the lower limit, it is located below the upper end of the second tubular body 14, and the inner diameter of the first tubular body 12 is smaller than the opening of the on-off valve device 6.

Next, the operation will be described. When filling and weighing powders and granules,
First, the container 5 is placed on the support leg 4 of the frame body 3, and the piston rod 17a of the air cylinder device 17 is lowered. As a result, the second tubular body 14 is guided by the guide device composed of the bracket 18 and the guide rod 19 and descends, and the second cover body 21 is extended accordingly, and the second tubular body 14 is extended as shown in the drawing. The lower end of the cylindrical body 14 is firmly pressed against the upper end of the on-off valve device 6. In FIG. 2, the right half portion of the second cylinder body 14 and the second cover body 21 shows a state in which the piston rod 17a is not lowered. The lower end of the supply pipe 7 and the on-off valve device 6 are made to communicate with each other by the first cylinder 12 and the second cylinder 14 due to the lowering of the piston rod 17a. Next, when the on-off valve device 6 is opened and the granular material is supplied through the supply pipe 7, the granular material moves from the terminal end of the supply pipe 7 to the first cylindrical body 12 and the second cylindrical body 14. The inside of the container 5 is filled therethrough. At this time, the outer periphery of the end portion of the supply pipe 7 and the first cylindrical body 12
The first cover body 20 completely prevents the fine powder particles from scattering from the gap between the inner periphery of the upper end of the first cylindrical body 12 and the outer periphery of the lower end of the first cylindrical body 12 and the upper end of the second cylindrical body 14. The second cover body 21 completely prevents the fine powder particles from scattering from the gap with the circumference. As a result, the weighing value of the weighing device 2 increases, so that the feeding of the granular material into the supply pipe 7 is stopped immediately before the increased value reaches the desired value, and when the desired value is reached, the on-off valve opens and closes. The device 6 is closed.

In this way, the weight of the powder or granules actually filled in the container 5 can be weighed by the weighing device 2, so that a desired amount of powder or granules can be accurately supplied to the container 5. Further, since the air cylinder device 17 can firmly press the lower end portion of the second cylindrical body 14 against the on-off valve device 6, it is possible to favorably prevent foreign matter from entering the container 5 during the filling of the powder or granular material. Moreover, since the container 5 is supported by the support legs 4 of the frame 3 and the air cylinder device 17 is fixed to the frame 3, the second cylinder 14
Even if is pressed against the on-off valve device 6, the weighing value by the weighing device 2 is not affected, and accurate weighing can be maintained. Further, the outer periphery of the end portion of the supply pipe 7 is loosely fitted to the inner periphery of the upper end portion of the first tubular body 12, the second tubular body 14 is loosely fitted to the outer circumferential surface of the first tubular body 12, and Since the lower end of the cylindrical body 12 is located below the upper end of the second cylindrical body 14 in a state where the second cylindrical body 14 is lowered to the lower limit, most of the powdery particles are the first. Since it passes through the inside of the cylindrical body 12 and the second cylindrical body 14,
The amount of fine powder particles adhering to the inner surfaces of the cover body 20 and the second cover body 21 is extremely small, and the troublesome cleaning frequency of the first cover body 20 and the second cover body 21 is good. At the same time, the expansion and contraction of the second cover body 21 can be favorably prevented from being hindered by the powder and granular material, and the abradable powder and granular material is used for the first cover body 20 and the second cover body. Prevents contact with 21 and wear. Further, since the second tubular body 14 is guided and moved up and down by the guide device including the bracket 18 and the guide rod 19, it is possible to smoothly raise and lower the second tubular body 14 by providing only one air cylinder device 17. Therefore, the manufacturing cost can be reduced. Further, since the inner diameter of the first tubular body 12 is made smaller than the opening of the opening / closing valve device 6, even if the position of the container 5 is slightly displaced, all the powder and granules are satisfactorily put in the opening of the opening / closing valve device 6. it can. The supply pipe 7 and the first cylindrical body 12
Is not connected to the first cover body 20 between them.
Therefore, the weighing device 2 weighs only the container 5 containing the powder particles and the frame 3 including the first cylinder 12 and the second cylinder 14 and so on. Since there is only the weight of the powder and the weight of the materials other than the powder is always constant, there is no problem in the weighing.

(Another embodiment) According to the above embodiment, the air cylinder device 17 is adopted as the pressing device, but the present invention is not limited to such a configuration, and the pressing device is, for example, a screw screw with a handle or the like. You may employ the manual type using.

Further, according to the above-mentioned embodiment, the opening / closing device (not shown) is used to automatically open / close the opening / closing valve device 6, but the present invention is not limited to such a configuration, and the opening / closing valve device 6 is not limited thereto. May be opened and closed by manual operation.

Further, it goes without saying that various modifications can be made to the specific configuration, such as providing a cover on the frame body 3.

(Effects of the Invention) As described above, according to the present invention, the weight of the powder or granules actually filled in the container can be weighed by the weighing device, so that the desired amount of powder or granules can be accurately supplied to the container. it can.
Further, since the lower end portion of the cover body can be firmly pressed against the on-off valve device by the pressing device, it is possible to favorably prevent foreign matter from entering the container when the powder or granular material is filled. Moreover, since the container is supported by the frame and the pressing device is fixed to the frame, even if the cover is pressed against the opening / closing valve device, the weighing value by the weighing device will not be affected and the container will be accurate. You can maintain a good weight. The outer circumference of the end portion of the supply pipe is loosely fitted to the inner circumference of the upper end portion of the first tubular body, the second tubular body is loosely fitted to the outer circumferential surface of the first tubular body, and the lower end of the first tubular body is Is located below the upper end of the second tubular body in the state where the second tubular body is lowered to the lower limit, so that most of the powdery grains are inside the first and second tubular bodies. The amount of fine powder particles adhering to the inner surfaces of the first cover body and the second cover body is extremely small, and it is difficult to clean the first and second cover bodies. The frequency can be satisfactorily reduced, and at the same time, the first and second cover bodies do not come into contact with the first and second cover bodies.
Can improve the durability of the cover body of the second
It is possible to favorably prevent the expansion and contraction of the cover body from being obstructed by the powder and granules. If the second cylinder is guided by the guide device to move up and down, a plurality of pressing devices are provided and the second cylinder is installed.
The manufacturing cost can be reduced as compared with the case where the vertical movement of the cylindrical body is guided. Further, if the inner diameter of the first cylindrical body is made smaller than the opening of the opening / closing valve device, even if the position of the container is slightly displaced, all the powder and granules can be satisfactorily charged into the opening of the opening / closing valve device.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a filling and weighing device according to an embodiment of the present invention, and FIG. 2 is a cutaway front view of the same portion. 2 ... Weighing device, 3 ... Frame, 5 ... Container, 6 ...
Open / close valve device, 7 ... Supply pipe, 12 ... First cylinder, 14 ...
Second cylinder, 17 ... Air cylinder device (pressing device), 18
...... Bracket (guide device), 19 …… Guide rod (guide device), 20 …… First cover body, 21 …… Second cover body

Claims (2)

(57) [Scope of utility model registration request] 1. A weighing device, a frame body which is fixed to the weighing device in a weighted state, and in which a container is placed, and an outer periphery of a terminal end of a supply pipe for supplying powder particles to the container. A first cylinder having an upper end loosely fitted and fixed to the frame, a second cylinder loosely fitted to the outer periphery of the first cylinder, and the second cylinder fixed to the frame. A pressing device that presses the lower end of the cylindrical body of the container against the on-off valve device attached to the upper end of the container;
A tubular first cover body that is interposed between the outer periphery of the end portion of the supply pipe and the outer periphery of the upper end portion of the first tubular body, and is vertically expandable and contractible, and the upper end of the first tubular body. A cylindrical second cover body which is interposed between the outer circumference of the second cylinder body and the outer circumference of the upper end portion of the second cylinder body and which can be expanded and contracted in the up-and-down direction is provided. By pressing the lower end portion against the opening / closing valve device, the supply pipe and the inside of the container communicate with each other through the first and second cylinders when the opening / closing valve device opens, and at this time, the first The filling and weighing device, wherein the lower end of the cylindrical body is located below the upper end of the second cylindrical body. 2. The first cylinder has an inner diameter smaller than that of the opening of the on-off valve device, and the second cylinder is configured to move up and down while being guided by a guide device fixed to the frame. The filling and weighing apparatus according to claim 1 of the new model registration claim.