JPH0620747Y2 - Vibrator for processing equipment such as powder and granular material - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a container for treating or transporting powder or granular material, a hopper, a vibrating feeder, a vibrating conveyor, a product separating device utilizing vibration, and a vibrating tension reducing device. Attached to etc. and used as driving power in these devices, or to improve the efficiency of transportation and other processing of powder and granules, for example to prevent adhesion and clogging of powder and granules to hopper etc. The present invention relates to a vibrator for a processing device.

(Prior Art) Conventionally, as a vibrator of this type, a so-called linear type vibrator in which a reciprocating metal piston is mounted in a metal housing and a so-called rotary type in which a rotating metal ball and the like are also arranged in the metal housing are arranged. Types of vibrators are known.

All of these known vibrators have a housing made of a high-density metal material such as malleable cast iron, and a metal guide member for guiding the movement of a vibration generating member such as a metal piston or a metal ball in the housing. It is press-fitted and held in the housing.

(Problems to be Solved by the Invention) The above-described conventional vibrator has the following problems to be solved.

First, because the housing is all-metal and heavy, it requires a lot of energy to add vibration to it.
In other words, most of the vibration force generated by the operation of the vibration generating member is absorbed by the housing, which hinders efficient use of energy.

In this way, since the energy efficiency is low, in order to give a sufficient vibration force to the hopper etc., the size of the vibration generating member must be increased,
It is necessary to speed up the movement of the vibration generating member, and as a result, it is inevitable that the vibrator becomes large, and excessive force is applied to both the vibration generating member and the housing.
This has also been a bottleneck in extending the life of the vibrator, which causes wear of the vibration generating member and the guide member.

Secondly, the guide member is separate from the housing,
Since it is simply press-fitted and held by the metal housing, it is unavoidable that a slight gap is created between the two, and the guide member becomes stiff with respect to the housing when the vibrator is driven, and the guide member generates its own vibration. In some cases, vibration noise or a collision noise between the metal of the guide member and the housing may occur.

Thirdly, since the housing is made of all metal, the weight of the vibrator is heavy, and the work of mounting the vibrator on the hopper and the like is burdened, and it is difficult to mount it by one person.

(Means for Solving the Problems) In the vibrator of the present invention, a conventional metal housing is made of reinforced plastic, and a guide member serving as a movement path of the vibration generating member is fixed in the housing.
It has a structure in which vibration generating members are arranged. The invention according to claims 1 to 7 is a so-called rotary type vibrator, and the guide member is shaped so that a vibration generating member moving along the guide member can be driven without coming into contact with the housing. Further, claims 8 to 11
The invention is a so-called linear type vibrator, in which a sleeve is attached as a guide member in a cylindrical housing. In any type, the housing is provided with an intake port for introducing a pressurized gas for driving the vibration generating member and an exhaust port thereof. A silencer (not shown) may be provided at the exhaust port.

The reinforced plastic used for the housing may be one that can withstand the vibration force generated in the vibrator, and in this specification, "reinforced" is used in that sense. As preferable plastic materials, so-called general-purpose plastics such as ABS resin, polyurethane, unsaturated polyester resin, and epoxy resin are reinforced with glass fiber, carbon, etc., so-called engineering plastics such as polyethylene terephthalate, polycarbonate, and a plurality of plastics. A mixed resin (polymer alloy) in which the above are combined is fried.

Next, as the structure of the housing, as shown in the following embodiments, in addition to a structure in which a detachable lid is fixed to the housing body, it may be a two-part structure or may be integrally molded as a whole.

Next, the guide member may be made of any material that can withstand the driving and vibration of the vibration generating member, but is generally made of metal. However, it is also conceivable to use a plastic excellent in abrasion resistance such as polyamide or polyacetal. Further, it is optimal that the guide member has a structure integrally molded with the housing as in the following embodiments. Further, in the embodiment, the guide member is configured by combining the left and right two members, but it may be integrated.

Next, the material of the vibration generating member is generally metal, but it is also possible to further reduce the friction with the guide member by adopting a structure in which the periphery is covered with a reinforced plastic with the metal as a core. The shape of the vibration generating member may be a ball type or a column type, and a linear type may be a prism type.

(Operation of the Invention) The vibrator of the present invention is used by being fixed to a hopper or other powdery or granular material processing device. Here, when the pressurized gas is introduced into the housing through the intake port, the vibration generating member moves along the guide member due to the pressure of the pressurized gas. This movement causes vibration, and the vibration force is transmitted to the hopper and other powdery or granular material processing devices through the housing. This point is similar to the conventional vibrator of this type. By the way, in the vibrator of the present invention, since the housing is made of plastic and is lightweight, the vibration generated by the vibration generating member is less likely to be absorbed by the housing, and is efficiently transmitted to the powdery or granular material processing apparatus.
Further, since the vibration transmission efficiency is high, it is not necessary to force the vibration generating member to be excessively driven or to increase the size of the device.
Moreover, since the vibration generating member is supported by the guide member and does not come into direct contact with the housing, the plastic housing does not wear due to contact with the vibration generating member. That is, the first problem is solved by coupling the plastic housing and the guide member.

Next, since the housing is made of plastic, it can be brought into water-tight contact with the guide member, and the generation of noise due to rattling of the guide member is prevented. This effect is more effective if both are integrally molded as in the embodiment. Therefore, the second problem can be solved by connecting the plastic housing and the guide member.

In addition, the plastic housing is lightweight,
The mounting work becomes easy, and the third problem is solved.

An embodiment of the present invention will be described below with reference to the drawings.

(Embodiment) FIG. 1 shows a mode of use of the vibrator 1 of the present invention, in which the vibrator 1 is fixed to the outside of the lower part of the hopper 2. Here, when the vibrator 1 is driven, the vibration force thereof is transmitted to the hopper 2, and the granular material inside the hopper is not clogged and is smoothly discharged from the exhaust port 3.

Details of the structure of the vibrator 1 are as shown in FIGS. 2 to 7.

That is, the housing body 4a made of reinforced plastic is formed with a hollow portion 5 having a circular cross section and having one side opening on one side surface of the housing body 4a, and a female screw 7 is formed on a peripheral wall of the opening of the hollow portion 5. The housing cover 4b is attached to the female screw 7 by screwing the male screw into the female screw 7, and the housing body 4a and the housing cover 4b.
And constitute the housing 4.

The housing body 4a has a shape in which legs 8 for attaching to a processing apparatus are provided on both upper and lower sides of a central portion of a substantially rectangular parallelepiped having the hollow portion 5, and the legs 8 and 8 have A hole 10 through which the mounting bolt 9 is inserted is formed.

A circular recess 11 is formed inside the housing cover 4b (side facing the hollow portion 5 when attached to the housing body), and a small-diameter recess 12 is formed outside.
A plurality of exhaust ports 13 are formed on the same circumference in the small-diameter recess 12, and the boss member 1 is formed at the center of the bottom surface of the small-diameter recess 12.
4 is formed to be convex.

The vibration generating member 15, which is a metal ball, is well retained in the housing 4 when the housing cover 4b is completely fastened to the housing body 4a, and is formed by the hollow portion 5 of the housing body 4a and the recess 11 of the housing cover 4b. It is adapted to be rotationally driven in the inner cavity 16 formed therein.

Here, the guide members 17, 18 are provided on the peripheral walls of the housing body 4a and the housing cover 4b on the inner cavity 16 side.
Are integrally molded, that is, the guide member is set in the mold and the housing body and the housing cover are cast into the mold. The guide members 17 and 18 jointly form a groove. That is, as shown in FIG. 4, both are made of metal, and have a conical inclined portion 19 serving as a traveling surface of the vibration generating member 15, and the large diameter end of the conical inclined portion 19 is radially outward. The projecting annular flanges 20 are continuously provided, and the conical inclined portion 1 is also provided.
An annular flange 21 extending in the axial direction is continuously provided at the small-diameter end of 9, and a plurality of holding tabs 22 projecting outward in the axial direction are formed at the outer end of the annular flange 21 at equal intervals.

In the above description, as shown in FIG. 6, the guide member 17 is integrally fixed to the housing body 4a by molding, and the circular hollow portion 5 and the guide member 17 have the same central axis. Further, the annular flanges 20 and 21 and the holding tab 22 are embedded in the plastic material of the housing 4a, and the guide member 17 is provided for movement in the axial direction, the radial direction and the rotational direction in relation to the housing body 4a. It locks and prevents it from going wrong.

The guide member 18 is integrally fixed to the inside recess 11 of the housing cover 4b by molding, and the circular recess 11 and the center axis of the guide member 18 are aligned with each other. Further, the outer surface of the annular flange 20 abuts on the annular ridge 23 formed on the housing body 4a to maintain the relative relationship with the guide member 17, and the annular flange 21 and the holding tab 22 serve as the housing cover 4b. It is embedded in the plastic material, and the position of the guide member 18 with respect to the housing cover 4b does not get out of alignment, like the relationship between the housing body 4a and the guide member 17.

The vibration generating member 15 travels along the guide members 17, 18 configured as described above, and particularly along the conical inclined portion 19, but the guide members 17, 18 make contact between the vibration generating member 15 and the housing 4. Vibration generation member 1
5 has a shape and size capable of supporting 5.

In FIG. 5, the through holes 30, 30 communicating with the hollow portion from the outside of the housing 4 are intake ports, and female threads 32 are cut at the bases thereof so that the joint 33 can be screwed. In the figure, 34 is a plug. Since the intake ports are provided in two places in this way, the connection position of the conduit can be freely selected depending on the installation position of the vibrator and the relative position of the air supply device, and the restriction on the installation position of the vibrator can be eliminated. You can Further, when a strong driving force is required, pressurized gas can be supplied from both intake ports.

Further, as shown in FIG. 6, a small-diameter recess 12 having an exhaust port 13 opened is formed on the outside of the housing cover 4b, and a baffle plate 24 for diffusing an exhaust flow is formed in the small-diameter recess as a boss. The outer end of 14 is fastened with screws 25. The baffle plate 24 has a smaller diameter than the small-diameter recess 12, and an annular opening 27 is formed around an annular chamber 26 formed inside the baffle plate 24. Therefore, the exhaust gas discharged from the exhaust port 13 enters the annular chamber 26 and is discharged from the annular opening portion 27. A silencer (not shown) may be provided near the exhaust port 13 if necessary.

In order to use the vibrator of the embodiment configured as described above, the bolt 9 is inserted into the through hole 10 formed in the leg 8 protruding from the housing 4, and the nut 3 is attached to the wall of the hopper 2 or the like.
5 is fixed, and one end of the conduit 37 connected to the air pump 36 is connected to the intake port 30.

When the pressurized gas is discharged from the intake port 30 into the hollow portion 5 of the housing, the vibration generating member 15 is guided along the guide members 17 and 18 by the force of the pressurized gas supplied from the tangential direction. It is rotated in 38 directions. The rotating vibration generating member 15 transmits the combined force of the centrifugal force and the tangential force to the housing 4. Since this combined force continuously acts in the same direction as the vibration generating member 15, it becomes a vibrational force due to rotational vibration and is transmitted to the hopper 2 via the housing 4. Then, the pressurized gas flows out to the outside through the exhaust port 13 as exhaust gas.

When the vibration generating member rotates, the housing cover 4b
In order to prevent the tightening of the housing body 4a from being loosened, the tightening screws of the housing body 4a and the housing cover 4b are formed so as to be tightened further by the force of the vibration generating member in the rotation direction.

In the above embodiment, the housing 4 has a structure in which the housing cover 4b is screwed into the housing body 4a, so that the vibration generating member 15 can be replaced very easily.

Incidentally, in general, when the vibrator is used, the vibration is changed by appropriately selecting the weight of the vibration generating member, but in this embodiment, since the vibration generating member is easily replaced, time is lost. You can always work with optimal vibration.

Since the housing is made of plastic and lightweight, the ratio of the weight of the housing to the weight of the vibration generating member can be made smaller than before. That is, since the conventional metal housing is heavy, the ratio is 1
It was extremely high, about 2: 1 or more, but in the present invention, it can be set to 3: 1 to 5: 1.

Next, FIG. 8 to FIG. 11 show an embodiment of a so-called linear type vibrator described in claim 11. FIG. 8 is a perspective view showing the appearance of the housing body 41. The housing cover 41b is fixed to the opening of the housing body 41a having an upper opening by bolts 42 to form the housing 41. A leg 43 for attachment is provided on the projection. The housing body 41a and the housing cover 41b are both made of reinforced plastic.

The internal structure of the vibrator having such a shape is as shown in FIGS. 9 to 11.

In the embodiment of FIG. 9, a plastic housing 4
A sleeve 45 made of metal serving as a guide member in the inner cavity 44
Are integrally molded, that is, the sleeve is set in the mold and the housing is cast into the mold. A piston 46, which serves as a vibration generating member, is slidably arranged in the sleeve 45 with the sleeve 45 as a cylinder. An annular groove 47 serving as an oil reservoir and an annular intake passage at two upper and lower positions are provided on a peripheral wall of the piston 46. 61 and 61a are formed.

The position of the annular intake passage is set so that the pressurized gas flows to the upper annular intake passage 61 when the piston descends, and the pressurized gas flows to the lower annular intake passage 61a when the piston rises. In the figure, 48 is a hose stem, 49 is an intake port, 50
Is an intake passage, 51 is an exhaust port, and 52 is a spring for smoothing the starting of the piston.

In this embodiment, when the pressurized gas is introduced into the housing through the intake port 49, the piston 46 moves up and down with the vicinity of the position of the upper exhaust port 51 as the upper limit. That is, the ninth
In the state shown in the drawing, the pressurized gas flows into the lower portion of the housing through the annular intake passage 61 and the intake passage 50, and the piston 46
Push up. When the piston 46 moves upward, the pressurized gas flows into the upper part of the housing through the annular intake passage 61a and the intake passage 50a and pushes down the piston 46. The vibration generated by the vertical movement of the piston 46 is transmitted to the hopper or the like via the housing 41.

Here, the lightness of the housing improves the vibration transmission efficiency, as in the rotary type embodiment.

Next, in the embodiment of FIG. 10, the metal impact plate 53 is loosely fitted to the bottom wall of the housing body 41a, and the piston 4
The impact plate 53 is struck at the lower end of 6 to transmit vibration, and 54 in the figure is a packing.

In this embodiment, in the state shown in FIG. 10, the pressurized gas flowing from the intake port flows into the lower part of the housing through the annular intake passage 60 and the intake passage 50 formed in the sleeve 45 and pushes up the piston 46. When the piston moves upward, the pressurized gas flows into the upper part of the housing through the annular intake passage 60 and the intake passage 50a and pushes down the piston 46.

When the piston 46 is pushed down, its tip strikes the impact plate 53, and the vibration caused by the impact is transmitted to the hopper and the like. Impact plate 5 as in this embodiment
Even if the housing is made of plastic, a vibrator using impact vibration can be configured by incorporating 3 into the vibrator.

Next, in the embodiment shown in FIG. 11, a hole 55 is formed in the bottom wall of the housing 41.
And a small-diameter striking part 5 at the lower end of the piston 46.
6, the lower end of the striking portion 56 reaches the mounting seat 57 such as a hopper when the piston descends. The operation of the piston 46 in this embodiment is similar to that of the embodiment shown in FIG.

According to this embodiment, the mounting seat 5 is directly attached to the striking portion of the piston.
7 can be tapped, and even if the housing is made of plastic, it is possible to configure a vibrator utilizing impact vibration.

(Effect of the Invention) According to this invention, since the housing is made of reinforced plastic, the weight of the vibrator can be reduced as compared with the conventional metal housing. Therefore,
The workability of attaching the vibrator can be improved.

Secondly, since the housing is lightweight, the absorption rate of the vibration energy obtained by the vibration generating member by the housing is lower than that of the conventional one. Therefore, the efficiency of use of energy is improved, and the driving force for supplying the same vibration energy to the processing device is smaller than that of the conventional one. Therefore, not only can the size of the vibrator be reduced, but also the load on the housing and the vibration generating member can be reduced, and the life of the vibrator can be increased by reducing wear.

Thirdly, by integrating the housing and the guide member, rattling between them can be eliminated, and noise due to independent vibration of the guide member can be prevented.

[Brief description of drawings]

FIG. 1 is a front view showing an example of use of the vibrator of the present invention, FIG. 2 is a perspective view of the embodiment of the present invention, FIG. 3 is an exploded perspective view of the same as the opposite side of FIG. 2, and FIG. Similarly, a perspective view of the guide member, FIG. 5 is a vertical sectional front view, FIG. 6 is a sectional view taken along line AA of FIG. 5, FIG. 7 is a front view of the housing cover, and FIG. 8 is a linear type vibrator. FIG. 9 is a perspective view, and FIG. 9 is a sectional view showing a linear type embodiment.
FIG. 10 is a sectional view of another embodiment, and FIG. 11 is a sectional view of yet another embodiment. 1 ... Vibrator, 2 ... Hopper 4 ... Housing, 4a ... Housing body 4b ... Housing cover, 5 ... Hollow part 11 ... Recess, 12 ... Small diameter recess 13 ... Exhaust port, 15 ... Vibration Generation member 16 ... Lumen, 17, 18 ... Guide member 19 ... Conical inclined portion 20, 21 ... Annular flange 22 ... Retaining tab, 23 ... Annular ridge 30 ... Intake port 41 ... … Housing, 46 …… Piston 53 …… Impact plate

Claims (11)

[Scope of utility model registration request] 1. A groove-shaped groove provided in the housing to serve as a movement path for a vibration generating member that is driven by pressurized gas to vibrate the housing and that can support the vibration generating member away from the housing. A guide member is provided in an annular shape along the peripheral wall of the inner cavity, and an inner space of the housing is provided with an intake port for ejecting a pressurized gas to move the vibration generating member along the guide member. A vibrator for a powder or granular material processing apparatus, in which an exhaust port for discharging gas to the outside of the housing is opened, and the housing is made of reinforced plastic. 2. The housing comprises a housing body having a hollow portion opened to one side, and a housing cover closing the opening of the hollow portion. The housing body and the housing cover are detachable, and the hollow body The vibrator for a powder and granular material processing apparatus according to claim 1, wherein a guide member is attached to a peripheral wall of an inner cavity obtained by closing the portion with a housing cover. 3. The housing is composed of a housing body having a hollow portion open to one side, and a housing cover closing the opening of the hollow portion, and the guide member is a groove member jointly. 3. The apparatus for treating powder and granules according to claim 1 or 2, wherein one of the members constituting the guide member is attached to the peripheral wall of the hollow portion of the housing body, and the other member is attached to the peripheral wall of the recess of the housing cover. Vibrator 4. The vibrator for a powder and granular material processing apparatus according to claim 3, wherein the guide member having a two-piece structure is molded integrally with the housing body or the housing cover, respectively. 5. The vibrator for a powder or granular material processing apparatus according to claim 1, wherein the guide member is formed of a material harder than the housing. 6. The vibrator for a powder or granular material processing apparatus according to claim 1, wherein the guide member is made of metal. 7. The vibrator for a powder or granular material processing apparatus according to claim 1, wherein the vibration generating member is a metal ball. 8. A sleeve, which serves as a cylinder of a piston, is provided in the inner cavity of a cylindrical reinforced plastic housing,
A piston is slidably arranged in the sleeve, an inlet and an outlet for pressurized gas are provided in the housing, and the pressurized gas supplied from the inlet is at one end or the other end of the cylinder. For a powder or granular material processing device, in which an intake passage is formed in a cylinder or a piston so as to be alternately supplied to both 9. The sleeve is formed of a material harder than the housing, and the housing is composed of a tubular housing body integrally molded with the sleeve, and a housing cover closing an opening of the housing body. A vibrator for a processing apparatus for powder or granular material according to claim 8. 10. The vibrator for a powder and granular material processing apparatus according to claim 8 or 9, wherein a metal impact plate is loosely fitted to the bottom wall of the housing so as to project and move to the outside of the housing by impact of a piston. 11. A striking portion having a small diameter is projected from the lower end of the piston, and a hole for inserting the striking portion is formed in the bottom wall of the housing so that the striking portion faces the bottom wall of the housing when the piston moves downward. The vibrator for a powder or granular material processing apparatus according to claim 8 or 9, wherein the vibrator is configured to hit an object to be vibrated.