JP6602158B2 - Valve device in the measuring feeder of granular material - Google Patents

Description

  The present invention relates to a valve device in a powder measuring feeder, and is particularly compact and is not subject to great restrictions on installation location. It can be easily disassembled and assembled into multiple parts, and can be cleaned and cleaned in detail. In addition, the present invention relates to a valve device in a measurement feeder for a granular material that can be applied to a granular material having various characteristics.

  In general, a weighing operation for storing a target weight in a container intended for the granular material is performed by conveying means such as a screw feeder, a table feeder, and an electromagnetic feeder from a granular material input member such as a hopper or a conical. Is used by discharging and supplying the granular material into a target container placed on a balance.

  However, in this weighing operation, the accuracy of measurement and the operation time are correlated, and if it is attempted to increase the accuracy, it will take much time, that is, it will be necessary to continuously supply a small amount. If it is shortened and importance is placed on efficiency, it will be difficult to maintain accuracy by supplying a large amount at a time.

  In addition, the conventional measuring device has a limit in its capacity, and the corresponding capacity fluctuates due to the difference in the characteristics of the powder, so that it is particularly difficult to measure the powder that is flushed. It was.

  Therefore, recently, a weighing feeder has been considered and developed, in which most of the target weight is initially opened, discharged and supplied into the target container, and gradually added. Therefore, the structure and control of the valve body that controls the passage of the granular material during additional supply becomes a problem.

  In addition, since the entire valve device including the valve body in the measuring feeder is configured integrally, it is difficult to clean up the details when reused for other types of powder particles after use. As a result, the size of the entire valve device is increased, the installation location is restricted, the weight of the valve device is large, and the movement is troublesome.

  Although the applicant investigated the prior art documents regarding the present invention, the applicant could not find any documents that were particularly related to the present invention and considered similar.

  The problem to be solved by the present invention is that the valve device in the conventional powder feeder for measuring granular material is difficult to flexibly cope with the difference in the characteristics of the granular material, and ensures the accuracy of weight. However, every time the work is shortened and the object is changed, it is difficult to clean the details, and the size is increased, and the installation location and movement are restricted. Conventionally, a powder feeder is generally a vibratory feeder or a screw feeder. However, switching control between coarse filling (large charging) and fine filling (small charging) is difficult, and it takes time to measure. In addition, since the structure is complicated, the disassembly and cleaning properties are poor, and switching time is required.

In order to solve the above-described problems, the valve device in the granular material measuring feeder according to the present invention is a measuring device in which a target weight of the granular material is put into a storage container placed on an electronic balance. A valve device attached to a feeder and whose opening is adjusted by an electric cylinder operated by information sent from the electronic balance described above, the valve body of which is an arc plate whose outer surface bulges, and a support portion for the arc plate The base end of the valve body is pivoted , the shaft is actuated by the electric cylinder, and the arc plate is pivoted in the vertical direction around the axis. The axis of the valve body is perpendicular to the arc direction of the arc plate. , Projecting outward of the arc-shaped plate, and sandwiched between the upper casing and the lower casing, and a powder chute for supplying the granular material is attached to the upper opening of the upper casing. Clearer between the body In the valve device in the powder feeder, in which the valve body, the upper casing, and the lower casing can be disassembled and assembled, one of the shafts of the valve body is electrically operated. It is integrated by fitting with a joint shaft attached to a cylinder arm pivotally supported at the tip of the cylinder shaft of the cylinder, and the fitting is performed by a step formed on the shaft side of the valve body and the joint shaft. It is characterized by being restricted .

Moreover, the valve apparatus in the measurement feeder of the granular material according to the present invention has the first rotating shaft (4c) and the second rotating shaft (4d) at the base end of the support portion, respectively, outwardly. The base is fixed, and the tip of the first rotating shaft (4c) connected to the electric cylinder is the connecting portion (4e), and the rotating shaft is not provided between the support portions and is hollow . .

Further, the valve device in the powder particle measuring feeder according to the present invention is characterized in that the position of the valve body can be adjusted in the vertical direction .

And the valve apparatus in the measuring feeder of the granular material which concerns on this invention is made | formed by tilting the joint of an electric cylinder by adjusting the vertical position of an above described valve body by supporting an electric cylinder with a trunnion structure. It is characterized by that.

  The valve device in the granular material measuring feeder according to the present invention is configured as described above. Therefore, by opening the arc-shaped plate in which the outer surface of the valve body bulges, the granular material can be poured into the target container, and this arc-shaped plate can be used as a guide for rotation and can cope with a minute amount. Further, by providing a clearance between the valve body and the outlet of the supply chute, the material is not rubbed by the metal, and there is no possibility that foreign matter is mixed into the granular material.

  In addition, this valve device can be easily detached from the drive system, and the valve body and upper and lower casings can be disassembled and reassembled, so that it can be cleaned in detail and always used in a clean state. The target granular material used last time remains and does not mix. Switching between coarse filling (large charge) and fine filling (small charge) is easy and easy to control, and the time required can be shortened.

  Furthermore, this valve device can be made compact and light by its configuration, and is very easy to handle without being restricted by installation location and position movement.

It is a top view which shows the valve apparatus in the measurement feeder of the granular material which implemented this invention. It is a front view. It is the sectional view on the AA line in FIG. FIG. 5 is a sectional view taken along line BB in FIG. 3. It is a CC arrow view in FIG. FIG. It is the figure seen from the other direction which shows an upper casing and a supply chute. It is a front view which shows a drive mechanism. It is a principal part top view.

  This was realized by configuring as illustrated in the drawings and described in the examples.

  Next, an example of a preferred embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes an upper casing. The upper casing 1 has a cylindrical portion 1a penetrating vertically, and has a substantially rectangular shape for abutting and joining with a lower casing 2 described later around the lower opening. A lower flange 1b is integrally formed, and a substantially rectangular upper flange 1c for integrally joining a powder chute 3 for supplying powder, which will be described later, is integrally formed around the upper and lower openings. An annular groove is formed on the upper surface of the upper flange 1c, and an O-ring 9 is attached.

  Further, the supply chute 3 joined to the upper flange 1c of the upper casing 1 has a cylindrical portion 3a for feeding powder particles in the center, and is superposed on the outer flange 1c on the outer surface of the cylindrical portion 3a. The flange 3b is integrally formed. The lower lower surface opening fitted into the upper casing 1 of the cylindrical portion 3a is matched with the shape of the upper surface arc-shaped plate of the valve body 4 described later, and the arc-shaped cutout 3c is arranged along the rotation direction of the valve body 4 Is formed. The flange 3b is placed on the upper flange 1c, and is fastened by handle bolts 13, 13,. In addition, a pin hole penetrating the upper flange 1c is partially drilled, and the positioning pin 3d is driven and welded.

  A downward arc-shaped shaft restraining portion 1d for restraining the rotating shaft of the valve body 4 and sandwiching it between the boundaries with the lower casing 2 is formed at the front and rear center positions of the lower flange 1b of the upper casing 1 described above. . On the other hand, the left and right edges of the lower flange 1b are formed with notches 1e, 1e,... For receiving and receiving hinge bolts 12 for fastening and fastening to the lower casing 2 at four locations.

  The lower casing 2 has a cylindrical shape, and has a cylindrical body 2a that has a concave shape. The concave portion is formed with a tapered surface so that the inner surface can easily aggregate powder particles. Further, a flange 2b is formed around the upper surface opening so as to be in contact with and joined to the lower flange 1b of the upper casing 1. The flange 2b has an upward circular arc shape corresponding to the shaft restraining portion 1d. The shaft holder 2d is formed. Further, an annular groove is provided around the upper surface opening of the flange 2b, and the string packing 10 is fitted into the annular groove.

  Projections 2c, 2c,... Are provided at positions corresponding to the notches 1e, 1e,... Of the upper casing 1 at the left and right positions of the lower casing 2, and a handle-type hinge having the projections 2c, 2c,. Bolts 12, 12... Are provided. The hinge bolts 12, 12, etc. are caused to fit into the notches 1 e, 1 e, etc. of the lower flange 1 b and the handle is operated, whereby the upper casing 1 and the lower casing 2 are fastened, and the fastening is loosened by this handle operation. Can be easily separated.

  Further, 4 in the figure shows a valve body used in this embodiment, and this valve body 4 has an arc-shaped plate 4a having an outer surface bulged on the upper portion, and this arc-shaped plate 4a is a quarter. It is an arc. Therefore, both side plates 4b and 4b extending from the inner four corners of the arcuate plate 4a are formed into a sector of 90 degrees, and the both side plates 4b and 4b are configured to face each other.

  Base portions of the first rotating shaft 4c and the second rotating shaft 4d are fixed to the base ends of the both side plates 4b and 4b, respectively, and are connected to the drive mechanism. The first rotating shaft 4c is configured to be 1.5 times longer than the second rotating shaft 4d, and the tip of the first rotating shaft 4c serves as a connecting portion 4e. In addition, the rotating shaft is not provided between the side plates 4b and 4b, and is hollow, so that the driving load is reduced and the weight of the entire apparatus is reduced.

  A seal ring 5, an oil seal 6 and a bearing 7 are fitted in order on the first rotating shaft 4 c and the second rotating shaft 4 d, and an O-ring 8 is mounted on the outer periphery of the seal ring 5 and the bearing 7. ing. In this state, the first rotating shaft 4c and the second rotating shaft 4d are set on the shaft placing portion 2d portion of the lower casing 2, and the upper casing 1 is covered from above, and is held by the shaft holding portion 1d. It becomes the form clamped in the boundary part of the upper casing 1 and the lower casing 2. FIG. This clamping does not hinder the rotating action of the first rotating shaft 4c and the second rotating shaft 4d.

  After the first rotating shaft 4c and the second rotating shaft 4d are set, the stopper plates 11, 11 of the rotating shafts 4c, 4d are fixed to the outer surface of the shaft holder 2d of the lower casing 2 by screws 11a, 11a. Is done. The stopper plate 11 has a notch for projecting the connecting portion 4e outwardly on the first rotating shaft 4c side.

  On the other hand, reference numeral 14 in the figure denotes an electric cylinder as a drive source for transmitting rotational force to the first rotating shaft 4c and forcibly rotating (pivoting) the valve body 4. The electric cylinder 14 is installed on the cylinder base 28 by fixing a cylinder mounting plate 20 having the electric cylinder 14 fixed on the upper surface with screws.

  A pair of trunnion bearing fittings 18, 18 face each other on the upper surface of the cylinder mounting plate 20 and are fixed by screws. A flat U-shaped trunnion shaft 19 attached to the front surface of the electric cylinder 14 is supported between the trunnion bearing fittings 18 and 18 through a bearing 23 so that the electric cylinder 14 itself can be tilted. As a result, the position of the valve body 4 can be adjusted in the vertical direction, the clearance between the valve body 4 and the cylindrical portion 3a of the supply chute 3 can be adjusted, and the adaptation to a granular material having poor fluidity can also be achieved.

  The cylinder shaft of the electric cylinder 14 can pass through the front surface of the trunnion shaft 19 and protrude forward. The cylinder shaft abuts against the trunnion shaft 19 at the base of the cylinder shaft and prevents the cylinder shaft from sliding. A stopper 22 is attached. A double joint 16 is provided on the front surface of the cylinder stopper 22.

  A flat base end of the cylinder arm 15 is pivotally supported by a joint pin 17 at the distal end of the double joint 16 described above. A retaining ring 17a is fitted to the tip of the joint pin 17 to prevent it from coming off. The cylinder arm 15 is formed with a cylinder 15a having a tapered end at an end extending upward, and a joint shaft 26 is formed in the cylinder 15a with a small diameter portion 26a leaving a gap (play). It is fitted.

  In the figure, reference numeral 25 denotes a flat cylinder arm fixing plate whose base end is fixed to the cylinder mounting plate 20 with a screw. The cylinder arm fixing plate 25 is bent into an elbow shape and its tip extends upward. A through hole 25a is formed at a position corresponding to the joint shaft 26. The tip of the joint shaft 26 is loosely fitted in the through hole 25a, and a plurality of bearings 27, 27,... Are provided in the through hole 25a around the loosely fitted joint shaft 26. ing. Further, a fixing screw 21 is attached to the front end surface of the joint shaft 26 that is loosely fitted to prevent the joint shaft 26 from coming off or loose.

  And the receiving groove 26b of the connection part 4e of the 1st rotating shaft 4c is formed in the rear end of the joint shaft 26, and the connection part 4e is fitted by this receiving groove 26b. The connecting portion 4e is formed flat, and an engagement step portion 4f is formed on one side surface thereof, and a step portion that matches the engagement step portion 4f is formed in the receiving groove 26b. This prevents the possibility of erroneous fitting direction.

  The valve device in the powder particle measuring feeder according to the present embodiment is configured as described above. Here, the operation will be described. An electronic balance is placed under the opening on the lower surface of the lower casing 2, and a storage container for powder particles is set on the electronic balance. Although the electric cylinder 14 is operated by the information from the electronic balance, since the weight of the granular material in the storage container is initially zero, the electric cylinder 14 is in a state where the cylinder shaft is fully projected forward. The base end of the cylinder arm 15 pivotally supported by the double joint 16 is also moved forward by the forward protrusion of the cylinder shaft, and this movement rotates the joint shaft 26 fitted to the cylinder 15a. Power is transmitted to the first rotating shaft 4c, and the valve body 4 is fully opened. In this state, most of the weight of the target granular material is introduced from the upper surface opening of the cylindrical portion 3a of the supply chute 3 and supplied into the storage container. The rotation direction of the valve body 4 is one direction regulated by the cylinder shaft being put in and out.

  When information is sent from the electronic scale to the electric cylinder 14 according to the weight, the electric cylinder 14 gradually draws the cylinder shaft, and the valve body 4 and also the circular arc plate 4a are rotated to turn the cylindrical portion of the supply chute 3. The lower opening of 3a is closed, and the falling flow path of the granular material is restricted. When the target weight is reached, the restriction is fully closed, and the supply of the granular material is stopped. This movement of the cylinder arm 15 is absorbed by play of the through hole 25a of the cylinder arm fixing plate 25 and the cylinder 15a, and becomes smooth.

  The valve device of the granular material measuring feeder according to the present embodiment is configured and operates as described above. This valve device measures the target weight and supplies the granular material to the storage container. However, by using a load cell, the valve device can be applied to work for subtracting the target weight.

  Further, the side plates 4b and 4b of the valve body 4 are not in a parallel state as shown in the figure, but have a configuration in which a lower interval is narrowed, a pyramid shape or a conical shape is formed from the four back corners of the arc plate 4a, Support poles can also be attached to the rotating shaft from the four corners on the back of the conical plate. In this case, it is desirable to fit the tip of the support pole as a ring to the rotating shaft.

  Further, this valve device is not limited to the powder and granular material, but can be applied to any liquid as long as it has no viscosity.

DESCRIPTION OF SYMBOLS 1 Upper casing 1a Cylindrical part 1b Lower flange 1c Upper flange 1d Shaft restraint part 1e Notch 2 Lower casing 2a Cylindrical body 2b Flange 2c Projection piece 2d Shaft placing part 3 Supply chute 3a Cylindrical part 3b Flange 3c Notch 3d Driving pin 4 Valve body 4a Arc plate 4b Side plate 4c First rotating shaft 4d Second rotating shaft 4e Connecting portion 4f Engaging step portion 5 Seal ring 6 Oil seal 7 Bearing 8 O ring 9 O ring 10 String packing 11 Stopper plate 11a Screw 12 Hinge bolt 13 Handle bolt 14 Electric cylinder 15 Cylinder arm 15a Cylinder 16 Double joint 17 Joint pin 17a Retaining ring 18 Trunnion bearing bracket 19 Trunnion shaft 20 Cylinder mounting plate 21 Fixing screw 22 Cylinder shaft stopper 23 Bearings 24 bearing 25 cylinder arm fixing plate 25a hole 26 joint shaft 26a small diameter portion 26b receiving groove 27 bearing 28 cylinder base

Claims (4)

The opening is adjusted by an electric cylinder that is attached to a weighing feeder that puts a desired amount of powder into a storage container placed on the electronic balance and is operated by information sent from the electronic balance. A valve device, the valve body of which is an arc plate whose outer surface bulges, pivotally supports the base end of the support portion of the arc plate, the shaft is operated by the electric cylinder, and the arc plate is centered on the shaft As described above, the shaft of the valve body is projected to the outside of the arc plate perpendicular to the arc direction of the arc plate, and is sandwiched between the upper casing and the lower casing. A powder chute for supplying powder is attached to the upper opening of the upper casing described above, and a clearance is formed between the supply chute and the valve disc. The valve disc, the upper casing, and the lower casing described above. Is disassembled and assembled In the valve device in the powder and particle measuring feeder that can be operated, one of the shafts of the valve body is fitted with a joint shaft attached to a cylinder arm pivotally supported at the tip of the cylinder shaft of the electric cylinder. The valve device in the measuring feeder of the granular material is characterized in that the directionality of the fitting is regulated by a step portion formed on the shaft side of the valve body and the joint shaft . The first rotating shaft (4c) and the second rotating shaft (4d) are fixed to the base ends of the supporting portions outwardly, and the first rotating shaft connected to the electric cylinder ( 4. The valve device in the measuring feeder of granular material according to claim 1, wherein the tip of 4 c) is a connecting portion (4 e), and a rotating shaft is not provided between the supporting portions and is hollow . The valve device in the measuring feeder of the granular material according to claim 1, wherein the position of the valve body is adjustable in the vertical direction . 4. The granular material measuring feeder according to claim 3, wherein the vertical position adjustment of the valve body is performed by tilting a joint of the electric cylinder by supporting the electric cylinder with a trunnion structure. Valve device in.

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