JPH0893979A - Joint for vibrating equipment - Google Patents

Abstract

PURPOSE: To prevent the deterioration and breakage by wear and fatigue of a joint for mutually connecting nozzles of equipments relatively vibrating at a high speed. CONSTITUTION: This joint 7 has a first fixed part to be fixed to the outer circumferential surface of the nozzle 6 of a powder supplying device 2, a second fixed part to be fixed to the outer circumferential surface of the inlet nozzle 4 of a gyro shifter 1, and a middle part provided between the first fixed part and the second fixed part continuously to both the fixed parts and having protruding parts swollen outward in a position corresponding to the top edge outer circumference of each nozzle 4, 6 and in the middle position thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint, and more particularly to a joint for connecting nozzles of two devices that vibrate at relatively high speed.

[0002]

2. Description of the Related Art A gyro shifter, a circular vibrating screener and the like are known as classifiers for sizing and removing foreign matters. For example, a gyro shifter is configured so that a mesh surface for sieving swirls in a horizontal plane, an introduction nozzle for introducing powder as an object to be processed into the internal mesh surface, and a sieving treatment. And a discharge nozzle for discharging an object. Each nozzle of the gyro shifter is connected to a nozzle of an upstream side device and a nozzle of a downstream side device through a joint.

The joint for connecting the gyro shifter and other devices is made of silicon rubber and has a cylindrical shape, and both ends thereof are fixed to the nozzle of the gyro shifter and the nozzle of the upstream side device or the downstream side device. ing.

[0004]

[Problems to be Solved by the Invention] The gyro shifter is
During use, it oscillates laterally at high speed, while the upstream and downstream devices are stationary. Therefore, the fixed portion of the gyro shifter of the silicon joint vibrates at a high speed with respect to the other end side, and a part of the silicon joint repeatedly contacts the gyro shifter and the nozzle tip of each device. Then,
The relevant part of the silicon joint is easily deteriorated by friction and easily damaged. In addition, since the middle portion of the gyro shifter is slackened so that excessive force does not act on the silicon joint due to high-speed vibration of the gyro shifter, the silicon joint tends to be bent. In addition, since the gyro shifter is usually used under reduced pressure, the center of the silicon joint is dented inward, and the portion with a crease is particularly prone to fatigue. Therefore, it is necessary to replace the joint frequently, resulting in a loss of productivity.

Therefore, it is conceivable to increase the length of the joint to reduce the influence of vibration of the gyro shifter. However, longer joints require more clearance between the gyro shifter and other devices. In order to widen this space, not only the space for installing the gyro shifter becomes too large, but also the arrangement of each device used in a series of operations needs to be changed, which requires a drastic change in the system.

An object of the present invention is to prevent deterioration and damage due to wear of a portion corresponding to the nozzle tip of a joint in a joint connecting nozzles of a device that vibrates at a relatively high speed. Another object of the present invention is to prevent fatigue-induced degradation and breakage of the middle portion of the joint without significantly changing the arrangement of the system including the equipment.

[0007]

A joint of a vibrating device according to the present invention is for connecting nozzles of a first device and a second device, each of which has a nozzle and vibrates at a relatively high speed. This joint includes a tubular first fixing portion, a second fixing portion, and an intermediate portion made of an elastic body. The first fixing portion is formed on one end side and is fixed to the outer peripheral surface of the nozzle of the first device. The second fixing portion is formed on the other end side, and
It is fixed to the outer peripheral surface of the nozzle of the device. The middle part is the first
It is provided between the fixed portion and the second fixed portion so as to be continuous with both fixed portions, and has a convex portion that bulges outward at a position corresponding to the outer periphery of the nozzle tip edge of the device that vibrates at high speed.

When the first device is fixed, it is preferable that the intermediate part further has a convex part which bulges outward at a position corresponding to the outer periphery of the nozzle tip edge of the first device. It is preferable that the intermediate portion further has a convex portion that bulges outward between the nozzles of the first device and the second device. A joint of a vibration device according to another aspect of the present invention,
This is for connecting the nozzles of the first device and the second device, each of which has a nozzle and vibrates at a relatively high speed. This joint includes a tubular first fixing portion, a second fixing portion, and an intermediate portion made of an elastic body. The first fixing portion is formed on one end side and is fixed to the outer peripheral surface of the nozzle of the first device. The second fixing portion is formed on the other end side and is fixed to the outer peripheral surface of the nozzle of the second device. The intermediate portion is provided between the first fixed portion and the second fixed portion so as to be continuous with the both fixed portions, and
Between the nozzles of the device and the second device, there is a convex portion that bulges outward.

The first device and the second device may be used in a reduced pressure system. It is preferable that at least an intermediate portion of the first fixing portion, the second fixing portion, and the intermediate portion is made of silicone rubber.

[0010]

In the joint of the vibrating device according to the present invention, the first fixing portion on one end side is fixed to the outer peripheral surface of the nozzle of the first device, and the second fixing portion on the other end side is fixed to the outer peripheral surface of the nozzle of the second device. To be done.
Here, since the first device and the second device relatively vibrate at high speed, the joint similarly vibrates at high speed. For this reason, the tip of the nozzle of the device that vibrates at high speed and the inner surface of the joint are likely to come into contact repeatedly. However, here, in the intermediate portion between the first fixing portion and the second fixing portion, there is a convex portion that bulges outward at a position corresponding to the outer circumference of the nozzle tip edge of the equipment that vibrates at high speed, The number of direct contact of the discharge nozzle and the nozzle tip with the joint is reduced even when the high speed vibration occurs. As a result, deterioration and damage of the joint due to wear can be suppressed.

When the first device is fixed and the intermediate part further has a convex part that bulges outward at a position corresponding to the outer circumference of the nozzle tip edge of the first device, the vibrating device side and The number of times of contact with the side surface of the joint is reduced at both nozzle tips on the fixed device side. As a result, deterioration and damage of the joint due to wear can be suppressed. When the intermediate portion further has a convex portion that bulges outward between the nozzles of the first device and the second device, this convex portion may be caused by vertical movement or lateral movement of the vibrating device. Since the vibration is absorbed, the influence of the tensile force exerted on the joint by the high speed vibration is mitigated. Furthermore, since it is not necessary to slacken the joint as in the conventional case, there is no tendency to break.
As a result, deterioration and breakage of the central portion of the joint can be suppressed.

In a joint of a vibrating device according to another aspect of the present invention, the first fixing portion is fixed to the outer peripheral surface of the nozzle of the first device, and the second fixing portion is fixed to the outer peripheral surface of the nozzle of the second device, as described above. Fixed. The intermediate portion between the first fixing portion and the second fixing portion has a convex portion that bulges outward between the nozzles of the first device and the second device. Here, the convex portion of the intermediate portion absorbs the vibration due to the vertical movement and the horizontal movement of the vibrating device. As a result, the influence of the tensile force exerted on the joint due to high-speed vibration is mitigated. Furthermore, since it is not necessary to slacken the joint as in the conventional case, there is no tendency to break. Therefore, deterioration and damage of the joint can be suppressed.

Even when the first device and the second device are used in a decompression system, it is not necessary to sag the joint.
It does not have a tendency to break, and the adverse effects of reduced pressure can be reduced. When at least the intermediate portion of the first fixing portion, the second fixing portion, and the intermediate portion is made of silicon rubber, the effect of absorbing the vibration due to the vertical movement and the horizontal movement of the vibrating device increases. As a result, the influence of the tensile force exerted on the joint due to high-speed vibration is further alleviated.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a part of a powder classification system using a joint according to an embodiment of the present invention. The gyro shifter 1 is movably provided on a fixed base (not shown). Above the gyro shifter 1, a powder supply device 2 for supplying the gyro shifter 1 with powder as an object to be processed is arranged. Also, gyro shifter 1
A processing device 3 for processing the classified powder is disposed below the. Powder supply device 2 and processing device 3
Are fixed immovably.

The gyro shifter 1 has an introduction nozzle 4 and a discharge nozzle 5, and the introduction nozzle 4 is connected to the nozzle 6 of the powder supply device 2 via a joint 7. Also,
The discharge nozzle 5 is connected to the nozzle 8 of the processing device 3 via a joint 9. The gyro shifter 1 also has another discharge nozzle 10, and this discharge nozzle 10 has a joint 1
1 to another device (not shown).

As shown schematically in FIG. 2, the gyro shifter 1 includes a vibration generating mechanism 15 and a sieving member (mesh surface) 16 movably provided on the vibration generating mechanism 15.
Have and. The vibration generating mechanism 15 has a rotating shaft 17, a pulley 18 fixed to the rotating shaft 17, and a motor (not shown). A V-belt 19 is stretched between the pulley 18 and the motor. An eccentric portion is formed on the upper portion of the rotary shaft 17, and the tip of the eccentric portion is fixed to the sieving member (mesh surface) 16. With such a configuration, the gyro shifter 1 makes a so-called constant circular motion of turning in a horizontal plane.

Next, a joint for connecting the nozzles of the gyro shifter 1 and the devices 2, 3 will be described. Since the structures of the joints 7, 9, 11 are all the same, here,
The joint 7 will be described. FIG. 3 is a detailed view of the joint.
The joint 7 is made of silicon rubber and is formed into a substantially cylindrical shape. The first fixing portion 20 on the upper end side fixed to the outer peripheral surface of the nozzle 6 of the powder supply device 2 and the introduction nozzle 4 of the gyro shifter 1. Second fixing portion 2 on the lower end side fixed to the outer peripheral surface of the
1 and an intermediate portion 22 between the fixed portions 20 and 21. The first fixing portion 20 and the second fixing portion 21 are fixed to the corresponding nozzles 6 and 4 by fixing bands 23 and 24, respectively.

The intermediate portion 22 has a first portion at three locations in the vertical direction,
It has the 2nd and 3rd convex parts 22a, 22b, and 22c. These convex portions 22a to 22c have a semicircular cross section,
It is curved so as to bulge outward. Here, the first convex portion 2
2 a corresponds to the tip 6 a of the nozzle 6, and the third convex portion 22 c corresponds to the tip 4 a of the nozzle 4. That is, the outermost projecting portion of the first convex portion 22a and the nozzle tip 6a are at the same height, and similarly, the third convex portion 22a.
The protrusions 22a and 22c are arranged so that the outermost protruding portion of c and the nozzle tip 4a are at the same height.
Are formed. The second convex portion 22b is provided between the nozzles 4 and 6.

Next, the powder classification operation will be briefly described. The powder particles supplied from the powder supply device 2 are connected to the joint 7
And, it is sent into the gyro shifter 1 through the introduction nozzle 4. The gyro shifter 1 is vibrated at a high speed by the vibration generating mechanism 15, so that the particles introduced into the sieving member (mesh surface) 16 are sieved according to the particle size. The sieved particles are passed through the discharge nozzle 5 and the joint 9 to the processing device 3 or the discharge nozzle 10
And via joint 11 to another device.

At this time, the joints 7, 9, 11 also vibrate similarly. Here, a convex portion is formed at a portion of the joint corresponding to each tip of each nozzle. Therefore, a gap is formed between the outer circumference of the tip edge of each nozzle and the inner surface of the joint, and the outer circumference of the tip edge of each nozzle is prevented from coming into contact with the inner side surface of the joint. Further, since the convex portion is also formed in the central portion of the joint, the convex portion absorbs the vibration due to the movement of the gyro shifter 1. Further, by providing the convex portion in the central portion, the section modulus of the central portion of the joint becomes large, so that it becomes difficult to bend inward even when used under reduced pressure. As a result, the influence of the tensile force due to the vibration of the gyro shifter 1 that vibrates at high speed is mitigated, and the deterioration and damage of the joint are suppressed.

Other Embodiments (a) The shape of the convex portion of the joint is not limited to the above-mentioned embodiment.
The first convex portion and the third convex portion may have, for example, a triangular cross section as long as they have a shape that does not contact the tip of the nozzle. The second convex portion may have any shape as long as it can absorb vibration. Also, a plurality of second convex portions may be provided.

(B) In the above embodiment, the present invention is used as a joint for a gyro shifter, but it can be similarly applied to other classifiers and other devices that vibrate at high speed. (C) In the above-described embodiment, the entire joint is made of silicone rubber, but at least the intermediate portion may be silicone rubber or another elastic body, and the fixing portion may be formed of resin or the like made of another material. .

[0023]

In the joint of the vibrating device according to the present invention, since the intermediate portion has the convex portion, the number of times the discharge nozzle or the nozzle tip directly contacts the joint is reduced even when the device vibrates at high speed. . As a result, deterioration and damage of the joint due to wear can be suppressed. The first device is fixed,
In the case where the intermediate portion further has a convex portion at a position corresponding to the outer periphery of the nozzle tip edge of the first device, the nozzle tip portions of both the vibrating device side and the fixed device side have a joint due to wear. Deterioration and damage are suppressed.

When the intermediate portion further has a convex portion between the nozzles of the first device and the second device, the convex portion absorbs vibration, so that the joint receives the high speed vibration. The effect of pulling force is mitigated. Furthermore, since it is not necessary to slacken the joint as in the conventional case, there is no tendency to break. As a result, deterioration and breakage of the joint can be suppressed.

In the joint of the vibration device according to another aspect of the present invention, the intermediate portion has a convex portion, and the convex portion absorbs vibration. As a result, the influence of the tensile force exerted on the joint due to high-speed vibration is mitigated. Furthermore, since it is not necessary to slacken the joint as in the conventional case, there is no tendency to break. Therefore, deterioration and damage of the joint can be suppressed. Even when the first device and the second device are used in a depressurized system, it is not necessary to slacken the joint, so that there is no tendency to break and the adverse effect of depressurization can be reduced.

When at least the intermediate portion of the first fixing portion, the second fixing portion and the intermediate portion is made of silicone rubber, the effect of absorbing vibration is increased. As a result,
The influence of the tensile force exerted on the joint by high-speed vibration is further reduced.

[Brief description of drawings]

FIG. 1 is a powder classification device using a joint according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a classifier used in one embodiment of the present invention.

FIG. 3 is a sectional view of a joint according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gyro shifter 2 Powder supply device 3 Processing device 4 Introduction nozzle 5 Discharge nozzle 6,8,10 Nozzle 7,9,11 Joint 20 1st fixing part 21 2nd fixing part 22 Intermediate part 22a, 22b, 22c Convex part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jun Kishida 1 992 Nishikioki, Kamahama, Aboshi-ku, Himeji-shi, Hyogo 1

Claims (6)

[Claims] 1. A joint for connecting the nozzles of a first device and a second device, each of which has a nozzle and oscillates at a relatively high speed, the joint being formed at one end side and having a nozzle outer periphery of the first device. A cylindrical first fixing part fixed to the surface, a cylindrical second fixing part formed on the other end side and fixed to the nozzle outer peripheral surface of the second device, the first fixing part and the second fixing part. And a tubular intermediate portion made of an elastic body having a convex portion that bulges outward at a position corresponding to the outer periphery of the nozzle tip edge of the device that vibrates at high speed, Vibration equipment fittings. 2. The first device is fixed, and the intermediate part further has a convex part that bulges outward at a position corresponding to the outer periphery of the nozzle tip edge of the first device. Vibratory equipment joints described in. 3. The joint for a vibrating device according to claim 1, wherein the intermediate portion further has a convex portion that bulges outward between the nozzles of the first device and the second device. 4. A joint for connecting the nozzles of a first device and a second device, each of which has a nozzle and oscillates at a relatively high speed, and is formed on one end side and has a nozzle outer periphery of the first device. A cylindrical first fixing part fixed to the surface, a cylindrical second fixing part formed on the other end side and fixed to the nozzle outer peripheral surface of the second device, the first fixing part and the second fixing part. And a tubular intermediate portion made of an elastic body having a convex portion that bulges outward between the both nozzles of the first device and the second device. Vibration equipment fittings. 5. The joint for a vibrating device according to claim 4, wherein the first device and the second device are used in a decompression system. 6. The joint according to claim 1, wherein at least an intermediate portion of the first fixing portion, the second fixing portion and the intermediate portion is made of silicone rubber.