EP0357615A1

EP0357615A1 - Device for dispensing portions of grainy media, in particular pellets.

Info

Publication number: EP0357615A1
Application number: EP88902459A
Authority: EP
Inventors: Ludger Hackmann; Josef Wilken; Werner Sieverding
Original assignee: Byk Gulden Lomberg Chemische Fabrik GmbH
Current assignee: Takeda GmbH
Priority date: 1987-03-21
Filing date: 1988-03-12
Publication date: 1990-03-14
Anticipated expiration: 2008-03-12
Also published as: DE3861856D1; WO1988007483A1; DE8704248U1; JPH02503303A; US4991748A; EP0357615B1

Abstract

Un appareil sert à distribuer des portions de granulés, en particulier de boulettes, sortant d'une chambre de stockage d'un logement. Le logement (v) comprend à proximité de son fond (2) une ouverture de distribution (12) pouvant être fermée par un poussoir (8) commandé à main. Le poussoir comprend une chambre de dosage dont l'extrémité tournée vers l'intérieur dans la position de distribution est cloisonnée par rapport à la chambre de stockage. L'extrémité du côté de la sortie de la chambre de dosage est alignée avec l'ouverture de distrubtion dans la position de distribution. La grandeur de la chambre de dosage, qui présente un couvercle incliné vers le bas dans le sens de distribution, est égale à un multiple de la section transversale des boulettes. La partie initiale du couvercle (16), du côté de la chambre de stockage, forme une antichambre (13') de dosage dont la profondeur (y) est égale à un diamètre (y') environ des boulettes. Les flancs supérieurs (17) de l'antichambre de dosage (13') convergent l'un vers l'autre, forment une encoche en coin (18) avec la pointe orientée vers le haut.An apparatus is used to dispense portions of granules, in particular pellets, leaving a storage chamber of a housing. The housing (v) comprises, near its bottom (2), a dispensing opening (12) which can be closed by a push-button (8) controlled by hand. The pusher comprises a metering chamber, the end of which facing inward in the dispensing position is partitioned with respect to the storage chamber. The exit side end of the dosing chamber is aligned with the distrubtion opening in the dispense position. The size of the metering chamber, which has a cover inclined downward in the dispensing direction, is equal to a multiple of the cross section of the pellets. The initial part of the cover (16), on the side of the storage chamber, forms a metering antechamber (13 ') whose depth (y) is equal to a diameter (y') approximately of the pellets. The upper flanks (17) of the dosing antechamber (13 ') converge towards each other, forming a wedge notch (18) with the tip facing upwards.

Description

Device for portioned delivery of granular media, especially pellets

The invention relates to a device for portioned delivery of granular media, in particular pellets, from the storage space of a housing which in the vicinity of the housing base has a closable removal opening by means of a manually operable plunger, which plunger has a dosing chamber, the inside end of which is in the dispensing position by a tub is partitioned towards the storage room (compartment wall), and the outside end of which, in the dispensing position, is aligned with the removal opening, the size of the metering chamber having a ceiling sloping in the direction of dispensing displacement representing a multiple of the cross-section of the pellets

A device of this type is opposed to the German patent application P 35 35 292.2 of the applicant. Smaller pellet sizes exist, partly due to tolerance, but partly due to the spherical shape of the pellet which is not always exactly defined

Dispensed goods the risk of jamming in the separation zone between the storage room and the dosing container. At worst, apart from jamming of the mechanics, there may even be a smashing situation with respect to one or more balls.

The object of the invention is to manufacture a device of the Ar shown without the addition of other components simply to be trained so that there is an exact, convenient and trouble-free dispensing of small quantities.

This object is achieved by the invention specified in claim 1.

The subclaims are advantageous developments of the device according to the invention.

As a result of such an embodiment, a generic device is created which, when handled properly, ensures trouble-free dispensing of the dosed filling material. The separation from the remaining stock is extremely gentle; there is neither a clamping nor a breaking situation for the

Pellets. The structural means are simple and expedient by proceeding in such a way that the storage area-side starting area of the ceiling forms a dosing antechamber of the depth of approximately one pellet diameter, the upper flanks of which converging towards one another, pointing upwards with the tip Run out wedge notch. When separating bulkheads, a few pellets run together in the dosing pre-chamber, which is followed by the gentle and therefore damage-free, timely control of excess pellets before this wedge notch disappears under the comb, i.e. the upper edge of the compartment wall. The beads roll out practically over the flanks of the wedge notch, so they practically only lie there in a punctiform manner. The control takes place in a directional direction, in the opposite direction to the feed of the pellets. Dabe it proves to be advantageous that the wedge notch is narrower than the pellet diameter. In optimizing the gentle separation of the metered quantity achieved from the remaining stock, the invention proposes that the upper edge of the compartment wall slants inwards, ie the supply comb slopes downwards. This orientation represents an ar "counter cutting edge", whereby the balls are deflected over the back of the cutting edge in the direction of the storage space; the beads practically fall over your back. The federal measure also proves that the central area of the ceiling has a development. In the case of a quite large inlet-side gate of the metering chamber, there is at the same time a slight increase in the size of the outlet for the outlet-side gate thereof, in particular in such a way that the top and bottom of the metering chamber converge in the dispensing direction. It is also favorable that the ceiling is grooved in the transverse direction.

The corresponding curvature not only leads to stabilization of the even very thin-walled ceiling de metering chamber, but also coincides most favorably with the accumulation behavior of the pellets. Furthermore, it turns out to be geous that the upper edge of the compartment wall and the adjacent de part of the top of the housing base are designed to be concave in the transverse direction of the housing. This leads to a chute-like, sloping floor structure, which favors the feed into the dosing chamber, which practically forms a crop. With regard to a residual-free output of the filling content, a variant offers itself in such a way that the upper edge of the compartment wall and the adjacent part of the upper side of the housing bottom run obliquely in the transverse direction of the housing. This creates a kind of bag tip as a collection point. The correspondingly sloping profile of the compartment wall also means that the compartment effect does not take place over the entire length of the compartment wall, but in a scissor-like manner.

The subject matter of the invention is explained in more detail below on the basis of two illustrative exemplary embodiments. It shows

1 shows the device for portioned delivery of granular media, in particular pellets, in a side view, according to the first embodiment, 2 is a top view of this,

3 shows the side view from the right,

4 shows the side view from the left,

5 is the bottom view of the device,

6 shows the section along line VI-VI in FIG. 2, but when the dispenser is actuated,

7 is an enlargement in the area of the dosing chamber, specifically in a sectional view along line VII-VII in FIG. 8,

8 shows the section approximately along line VIII-VIII in FIG. 7,

9 shows the housing base designed as an insert in a perspective view and

10 shows the device according to the second embodiment in a sectional view like FIG. 8.

The device designed as a so-called dispenser for the metered delivery of fine-grained or pearly contents (so-called

Pellets), has a molded plastic housing 1. The latter is kept relatively flat. Its basically long rectangular cross-section is clearly shown in FIG. 5. The housing 1 takes into account a storage space V. This is filled from the open base cross-section and then closed by means of an insert part 3 forming a troughed housing base 2. Its design results particularly clearly from FIG. 9. The beads or pellets representing the filling material are designated by 4. Their diameter is, for example, in the range up to approximately 1 mm. The ceiling 5 of the storage room V is closed except for an opening for the dispenser dispensing mechanism M which is caused by an actuation. This is also taken into account in terms of injection technology.

5

In one end region of the ceiling 5 there is therefore a recess-like recess 6. The latter receives a pressure-type actuating handle 7. This can be moved vertically against spring action. It attacks an im

10 housing 1 guided plunger 8 of the dispenser dispensing mechanism M.

The return spring for the plunger 8 is formed by one of the actuating handle 7, the same shaped leaf spring 9. 15 You will find the latter abutment on the bottom of the recess 6. The leaf spring 9 takes an arc; the bottom of the recess 6 takes into account the necessary evasive space when moving the handle (see FIG. 6).

20 The U-shaped cross section, closed at the top

Ram 8 leads in a free cut in the middle of the area, there to the storage room V open, vertical shaft 10. The upper shaft section a is an inward te Kragenanfor ung of Asusparung 6, corresponding to the shocks

25 outline (not cross section). The wall sections of the collar formation which run parallel to the wide housing surfaces are rooted in the narrow wall 1 'of the housing 1 on the left-hand side. This narrow wall thus acts as a shaft.

30 The upper shaft section a is wider than the lower b. The upper shaft section takes up almost twice the width of the lower one. Accordingly, the ram is narrowed in the lower area. The transition zone between the two shaft sections a and b of the ram forms a taper

• 35 transition shoulder 11. Your overhang clearly shown in Figure 6 brings when pushing the plunger 8 a certain pushing aid for the pellets 4 in the bottom direction, which pushing aid in addition to gravity favors the output or even brings a certain loosening effect, which is useful in the event that the Stick pellets 4 to each other by exposure to moisture.

Upper shaft section a and lower shaft section b lie at a distance from the broad side walls of housing 1, as can be seen from FIGS. 8 and 10. In the left-hand, flat narrow wall 1 "of the housing 1 there is a window-shaped removal opening 12 for the discharge of the metered filling material in the direction of arrow A. Its window sill drops slightly in this dispensing direction.

The corresponding output is controlled by the plunger 8, which in its lower end region has a metering chamber 13 which can be brought into congruent alignment with the lower removal opening 12. The exit opening side of the

Dosing chamber 13 corresponds exactly to the relevant window outline. The gate facing the storage room V, however, is of greater height with the same width. However, in the basic position shown in FIG. 7, part of this gate cross-section is covered by a section of the lower shaft section b to be designated as a partition wall 14. This compartment wall 14 runs parallel to the narrow wall 1 * of the housing. Its upper edge 14 'terminates essentially at the same height as the adjacent part 2 * of the top of the housing base 2. The corresponding section 2 'is additionally slanted in relation to the rest

Direction of the metering chamber 13. Correspondingly inclined in the direction of arrow A, the bottom 15 and the ceiling 16 are also of a volume which is a multiple of the cross-section of a dosing chamber 13 having pellets 4. The floor-forming bevels lie at an angle which favors the pellets to unroll. As in As can be seen in FIG. 7, the bottom 15 of the metering chamber 13 is lower than the upper edge 14 'of the compartment wall 14. In this way, in relation to the divided mass of the filling material with respect to the metering chamber 13, there is practically a bolster K, which in the basic position always fills again depending on the force of gravity .

To achieve a gentle, i.e. Non-destructive separation of the metered filling quantity compared to the remaining supply in storage room V, special precautions are taken: These consist in the higher-lying starting area on the storage room side, of the ceiling 16, which is placed much steeper than the floor 15 of the metering chamber, forming a metering pre-comb 13 '.

The latter, viewed perpendicular to the vertical direction of displacement of the plunger 8, has a depth y which corresponds approximately or at least to the diameter y 'of a pellet 4. The dosing pre-chamber 13 * starts from the maximum width of the dosing chamber in order to taper upwards, that is to say in the direction of the actuating handle 7 (cf. FIG. 8). The flanks 17 in this regard take a course tapering in the direction of the axis of symmetry (corresponding to section line VII-VII). This preferably results in a semicircular arc. Of course, another tapering converging in the tip or apex can be used, such as flatter sections of curvature. At the highest point of the dosing pre-chamber 13 'there is a wedge notch 18. The initial notch depth corresponds to the depth y of the metering pre-chamber 13 '. The notch base wedges upwards at an angle of approx. 30. Accordingly, the notch flanks 18 'taper increasingly. The V-notch angle is 40 ^° but can be more. The initial width of the wedge notch 18 (transition area between dosing pre-comb 13 'and wedge notch 18) is less than the diameter y' of a pellet 4. The transitions are each rounded. The corresponding measures lead to a gentle outward steering of pellets which do not find space in the dosing chamber 13 when the plunger 8 is moved downward. The upper edge 14 'of the abbial wall 14 which slopes downwards in the direction of the storage space V acts accordingly. The notch base 18 "and the rearward falling upper edge 14 'of the compartment wall 14 diverge in the direction of the storage space V (see FIG. 7). The cutting edge of the compartment wall 14 in the joint area, oriented at an acute angle, is practically a compartment finger in the joint Instead of a cutting edge 14 ", it is also sufficient if the apex of a corresponding transverse rounding is at a distance from the joint F which is smaller than the radius of a pellet.

The angle of inclination of the upper edge 14 'takes into account a value which favors the unrolling of a pellet. The bottom 2 and the part 2 'of the insert 3 according to the first exemplary embodiment are troughed across their entire length. This leads to a collecting trough in the middle level of the donor. The

According to FIG. 8, the upper edge 14 * takes a corresponding curve in the transverse direction. For reasons of clarity, the housing base 2 is recorded somewhat deeper in terms of cut.

In the second exemplary embodiment (FIG. 10), the correspondingly concave transverse trough of the housing base 2 is given up in favor of an obliquely sloping alignment of the upper edge 14 'and the adjacent part 2 ^{* of} the upper side of the housing base 2, taking into account the course of the cut Right downward slope. This means that the pellet mass is not separated across its entire width, but rather a more scissor-like separation from the remaining stock. The final control of the pellets y which are no longer accommodated in the metering chamber 13 again takes over the measure described for FIGS. 7 and 8. Of course, the wedge notch 18 may in turn lie in the axis of symmetry or, as an alternative in FIG. 10, Darge is positioned perpendicular to the upper edge 14 'of the compartment wall, which slopes downward to the right, or perpendicular to the correspondingly inclined upper side of the housing base 2. The remaining pellets are collected there at the lowest point. In order to ensure a completely free output, the deepest section can rise again in the opposite direction (not shown in more detail). Otherwise, the reference numerals are applied accordingly. Also with respect to the lateral projections of the housing base 2 encompassing the shaft 10, slopes 2 ″, 2 ″ ″ are used, which center the goods in

Direction of the output route A favored (see Figure 9).

The bottom of the recess 6, in which the lower edge of the cap-shaped actuation handle 7 opens, acts as the actuation limit stop. The cap body is subsequently connected to the top of the plunger 8, which is closed at the top, but can also be in one piece with this if a different type of spring chamber is available.

Irrespective of this or in addition, a limit stop can be implemented in such a way that the bottom 15 of the metering chamber 13 continues into a downward-pointing finger 20, which leads on the inner surface of the narrow wall 1 'and whose downward front end moves against a shoulder 21 of the wall mentioned .

The narrow wall 1 '* of the housing 1 opposite the narrow wall 1' is convexly curved. Said area bears a clip-on viewing window 22, so that the filling content can be checked optically.

For refilling, it is only necessary to pull off the housing part 2 forming insert 3 downwards. This can be done by capturing one in the donor's median plane arranged, the insert part 3 integrally molded web 23 happen.

After filling the insert 3 easy to put ^{on, "can} impact limited replace. Rip Peripheral horizontal Rand¬ give the sufficient adhesive power.

The ceiling 16 of the metering chamber 13, as seen in the direction of the arrow A, is offset at an obtuse angle, so that the D3 outer gate is larger. The corresponding bend is in the middle.

Briefly, the function of the donor is as follows: 5

By exerting a force in the direction of arrow P (see FIG. 6), the plunger 8 is displaced downwards. The amount of pellets 4 in the metering chamber increasingly dips below the silhouette of the upper edge 14 * of the compartment wall 14. Good located on the upper edge 14 'rolls on its back on the back. Material that no longer fits into the lowering dosing chamber 13 finally collects in the dosing pre-chamber 13 via an increasingly smaller wedge space. Here there are only a few 5 i pellets, which are still included in the dispensing quantity - in the final phase the lowering movement of the plunger 8 or dfear dosing chamber 13, the excess ivy leaves that finally collect in the cover-e ___. σπe of the dosing pre-chamber run into the wedge notch 18, from which they are then gently controlled TT in the direction of the remaining supply V. . To

At the end of the corresponding department with respect to the remaining supply, the gate of the metering chamber 13 facing the removal opening 12, with the plunger 8 being further lowered, is brought into the congruent orientation to the removal opening 12. The quantity divided off 5 rolls out in the direction of arrow A. After releasing the actuation button 7, the plunger 8 then swings back into its basic position in a spring-loaded manner. All the new features mentioned in the description and shown in the drawing are essential to the invention, unless they are expressly claimed in the claims.

Claims

PATENT CLAIMS

1. Device for portioned delivery of granular media, in particular pellets, from the storage space of a housing, which in the vicinity of the housing base has a removal opening which can be closed by means of a manually operated plunger, which plunger has a metering chamber, the inside end of which is in the dispensing position through a wall is divided abge towards the pantry, and the outside end of which is aligned with the discharge opening in the dispensing position, the size of the metering chamber having a blanket sloping in the direction of dispensing displacement representing a multiple of the cross section of the pellets, characterized in that the blanket-side initial area of the blanket ( 16) forms a dosing pre-chamber (13 ') of the depth (y) of approximately one pellet diameter (y "), the upper flanks (17) of which converging towards one another, into a wedge notch (18 ) come in.

2. Apparatus according to claim 1, characterized in that the wedge notch (18) is of smaller width than a pellet diameter (y ').

3. Device according to one or more of the preceding claims, characterized in that the upper edge (14 ') of the

Compartment wall (14) inwards, i.e. drop on the storage chamber side.

4. Device according to one or more of the preceding claims, characterized in that the central region of the deck

(16) has a bend.

5. Device according to one or more of the preceding claims, characterized in that the ceiling (16) and bottom (15) of the metering chamber (13) converge in the output direction (arrow A).

6. Device according to one or more of the preceding Anspr che, characterized in that the ceiling (16) is grooved in the transverse direction.

7. Device according to one or more of the preceding claims, characterized in that the upper edge (14 ') of the compartment wall (14) and the adjacent part (2') of the upper side of the housing base (2) in the transverse direction of the housing (1) is designed concave.

8. Device according to one or more of the preceding claims, characterized in that the upper edge (14 ') of the compartment wall (14) and the adjacent part (2 *) of the upper side of the housing base (2), in the transverse direction of the housing ( 1) sloping downwards.