JPH0575219U - Vibrator for processing equipment such as powder and granular material - Google Patents

Abstract

(57) [Abstract] [Purpose] In a vibrator used for a processing apparatus for powder and granular materials, the purpose is to efficiently use the vibration force obtained by the vibration generating member, reduce noise, and reduce the weight. . [Structure] The housing 2 is made of reinforced plastic, the guide member 9 to be mounted therein is an annular metal single member, and the guide groove 11 of the vibration generating member 10 is provided inside the guide member 9 in an annular shape. Configured. Housing 2
Since it is lightweight, vibration absorption is small and the vibration force can be effectively utilized, the vibrator can be made lightweight, and rattling between the housing 2 and the guide member 9 does not occur, so that noise is reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is attached to a container for treating or conveying powder and granular material, a hopper, a vibration feeder, a vibration conveyer, a product separating device utilizing vibration, a vibration tension reducing device, etc., and driving power for these devices. The present invention relates to a vibrator for powder and granular material processing equipment, which is used for improving the efficiency of transportation of powder and granular materials and other processing, for example, preventing adhesion and clogging of powder and granular materials in hoppers. is there.

[0002]

[Prior Art]

 Conventionally, as this type of vibrator, a so-called linear type vibrator in which a reciprocating metal piston is mounted in a metal housing, and a rotating metal ball and the like are also arranged in the metal housing. A so-called rotary type vibrator is known. In all of these known vibrators, the housing is made of a high-density metal material such as malleable cast iron, and the housing is made of a metal that guides the movement of a vibration generating member such as a metal piston or a metal ball. The guide member is structured to be press-fitted and held in the housing.

[0003]

[Problems to be solved by devising]

 The above-mentioned conventional vibrator has the following problems to be solved. First, since the housing is made of all metal and is heavy, it requires a large amount 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 the efficient use of energy. As described above, since the energy efficiency is low, in order to give a sufficient vibration force to the hopper and the like, it is required to increase the size of the vibration generating member and increase the speed of movement of the vibration generating member. Inevitably, the vibration generator is unavoidably increased in size, and an excessive force is applied to both the vibration generating member and the housing, which causes wear of the vibration generating member and the guide member. It was Secondly, since the guide member is separate from the housing and is simply press-fitted and held by the metal housing, a slight gap is unavoidable between the guide member and the vibrator drive. Occasionally, the guide member would be hard against the housing, causing vibration noise due to the inherent vibration of the guide member, and noise of collision between the guide member and the metal of the housing. Third, since the housing is made of all metal, the weight of the vibrator is heavy and the work of mounting it on a hopper, etc. is burdensome, and it is difficult to install it by one person. Was wanted.

[0004]

[Means for Solving the Problems]

 The vibrator of the present invention has a structure in which a conventional metal housing is made of reinforced plastic, a guide member serving as a movement path of the vibration generating member is fixed in the housing, and the vibration generating member is arranged. ing. The guide member is a single member having an annular shape, and the guide groove of the vibration generating member is provided inside the guide member in an annular shape.

The guide groove preferably has a cross-sectional shape in which inclined surfaces are symmetrically provided (Claim 2), and the housing includes a housing case having a hollow chamber and a housing cover for closing an opening of the hollow chamber. When the guide member is integrally molded with the housing case, the guide member is securely fixed (claim 3). Further, when the air supply hole and the exhaust hole are formed on the extension of the orbital surface of the vibration generating member, the motion of the vibration generating member is smooth (claim 5).

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 such a sense. As a preferable plastic material, a so-called general-purpose plastic such as ABS resin, polyurethane, unsaturated polyester resin, epoxy resin or the like is reinforced with glass fiber, carbon or the like, or so-called polyethylene terephthalate, polycarbonate or the like. Engineering plastics and mixed resins (polymer alloys) that combine multiple plastics are fried.

Next, the guide member may be made of a 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, the guide member is composed of a single member, and it is optimum that the guide member is molded integrally with the housing as in the following embodiments. 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 circumference is covered with reinforced plastic with the metal as the core. In addition to the ball type, the shape of the vibration generating member may be a column type.

[0008]

[Function of the device]

 The vibrator of the present invention is used by being fixed to a hopper or other powder and granular material processing device. Here, when the pressurized gas is introduced into the housing through the air supply hole, the vibration generating member moves along the guide member due to the pressure of the pressurized gas. Vibration is generated by this movement, and the vibration force is transmitted to the hopper and other powder and 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 light in weight, the vibration generated by the vibration generating member is less absorbed by the housing, and is efficiently transmitted to the granular material processing device. .. 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 can be solved by connecting 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 noise due to rattling of the guide member can be 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. Further, since the plastic housing is lightweight, the mounting work is easy and the third problem is solved.

Further, since the guide member is composed of a single member, the demand for assembly accuracy is high, and rattling does not occur even during long-term use.

[0011]

【Example】

 FIG. 3 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 A. Here, when the vibrator 1 is driven, its vibration force is transmitted to the hopper A, and the granular material in the hopper is not clogged and is smoothly discharged from the discharge port A1. Details of the structure of the vibrator 1 are as shown in FIGS. That is, the housing case 2a made of reinforced plastic is formed with a hollow chamber 3 having a circular cross section and one side of which is opened to one side surface of the housing case 2a, and the guide member 9 is provided at the opening of the hollow chamber 3. A housing cover 2b made of reinforced plastic is attached to the housing case 2a through a bolt 5 screwed into a female screw 9a formed on the housing. The housing 2 is composed of the housing case 2a and the housing cover-2b. Reference numeral 4 in the drawing is a seal member.

The housing case 2 a has a shape in which legs 6 for attaching to a processing apparatus are provided on both left and right sides of a central portion of a substantially rectangular parallelepiped having the hollow portion 3, and the legs 6, A hole 8 for inserting the mounting bolt 7 is formed at 6. A guide member 9 is fixed to the hollow chamber 3 of the housing case 2a by integral molding. The guide member 9 is made of an annular metal, and as shown in FIG. 1, has symmetrical inclined surfaces 11a and 11b which serve as running surfaces of the metal balls 10 which are vibration generating members. The guide groove 11 is configured. The metal ball 10 is favorably held in the housing 2 when the housing cover 2b is completely fixed to the housing case 2a, and is integrally fixed to the inner peripheral surface of the housing case 2a. Then, it is driven to rotate in the hollow chamber 3 formed by the inner surface of the housing case 2a and the housing cover-2b.

In the above description, the guide member 9 is integrally fixed to the housing case 2a by molding, and the central axes of the circular hollow chamber 3 and the guide member 9 are aligned. A large number of recesses 9b are formed in the guide member 9, and the reinforced plastic of the housing case 2a is embedded in the recesses 9b in a convex shape 2c during molding. An inner flange 2d is formed in the opening of the housing case 2a, and the guide member 9 is locked by the inner flange 2d. With these structures, the guide member 9 is locked against movement in the axial direction, the radial direction, and the rotational direction in relation to the housing case 2a, and deviation is prevented.

In FIG. 2, a small-diameter through hole 12 communicating with the hollow chamber 3 from the outside of the housing 2 is an air supply hole, and a large-diameter through hole 13 parallel to the air supply hole 12 is an exhaust hole. The female screw 14 is cut, and the joint 15 is screwed in so that the hose 16 can be connected to the air supply side and the silencer 17 can be connected to the air discharge side. Note that the silencer may not be connected depending on the case.

In order to use the vibrator 1 of the embodiment configured as described above, the bolt 7 is inserted into the through hole 8 formed in the leg 6 protruding from the housing 2, and the hopper A or the like is inserted. It is fixed to the wall with a nut 7, and one end of an air supply hose 16 connected to an air pump (not shown) is connected to an air supply hole 12 via a joint 15. When the pressurized gas is discharged from the air supply hole 12 into the hollow chamber 3 of the housing, the metal ball 10 is driven to rotate in the direction shown by the arrow in FIG. 2 along the guide groove 11 by the force of the pressurized gas supplied from the tangential direction. To do. The rotating metal ball 10 transmits a combined force having both centrifugal force and tangential force to the housing 2. This combined force continuously acts in the direction shown by the arrow in FIG. 2 similarly to the metal ball 10, so that it becomes a vibration force due to rotational vibration and is transmitted to the hopper A via the housing 2. The pressurized gas then flows out through the exhaust hole 13 as exhaust gas.

In the above embodiment, the housing 2 is composed of the housing case 2a and the housing cover-2b which is detachably attached to the guide member 9, so that the replacement of the metal ball 10 is extremely easy. By the way, in general, when the vibrator is used, the vibration is changed by appropriately selecting the weight of the vibration generating member.In this embodiment, however, it is easy to replace the vibration generating member. You can always proceed with optimal vibration without loss.

[0017]

[Effect of the device]

 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 installing the vibrator can be improved. Second, 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 utilization efficiency of energy is improved, and the driving force for supplying the same vibration energy to the processing device is smaller than the conventional one. Therefore, not only the vibrator can be downsized, but also the load on the housing and the vibration generating member is 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. In particular, since the guide member is composed of a single member, rattling due to poor assembly accuracy and rattling due to long-term use are prevented, and energy loss and noise are prevented.

[Brief description of drawings]

FIG. 1 is a front sectional view of an embodiment of the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a side view of the same usage state.

[Explanation of additional numbers]

 1 Vibrator 2 Housing 3 Hollow Chamber 9 Guide Member 10 Metal Ball 11 Guide Groove

Claims (5)

[Scope of utility model registration request] 1. A vibrator in which a guide member is mounted in a housing having an air supply hole and an exhaust hole and a vibration generating member driven by a pressurized gas is arranged, wherein the housing is made of a reinforced plastic. Is a single metal member having an annular shape, and a guide groove for a vibration generating member is provided in an annular shape inside the vibrator, which is used for a processing apparatus for powder particles and the like. 2. The vibrator for a powder or granular material processing apparatus according to claim 1, wherein the guide groove has a cross-sectional shape in which inclined surfaces are symmetrically provided. 3. The housing comprises a housing case having a hollow chamber and a housing cover closing an opening of the hollow chamber, and the guide member is integrally molded with the housing case. Vibrator for the processing device for powder and granular material described 4. The vibrator for a powder or granular material processing apparatus according to claim 1, wherein the vibration generating member is a metal ball. 5. The vibrator for a powder or granular material processing apparatus according to claim 1, wherein the air supply hole and the exhaust hole are formed on an extension of the raceway surface of the vibration generating member.