JPH078519U - Elbow type silencer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an elbow-type silencer with high noise control effect. [Structure] The cylindrical portion 18 of the silencer body 31 is rotatably mounted on the outer periphery of the mounting body 11, and the silencer body can be fixed at any position on the outer peripheral surface of the mounting body by a nut 29 screwed onto the male screw 16 of the mounting body. And Attach the silencer body to the exhaust port of the fluid pressure equipment with the mounting part, and orient the silencer body in the direction with the highest noise countermeasure effect (meaning that exhaust noise is hard to reach the ear and not felt as noise), and its position is determined by the nut. Fixed to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a silencer for a pneumatic device, and more particularly, to an elbow silencer that can be attached to a pneumatic device in a direction substantially orthogonal to a discharge direction of exhaust gas and in any direction.

[0002]

[Prior art]

 A known silencer 1 attached to a pneumatic device is usually formed in a straight line shape, and as shown in FIG. 5, is directly attached to an exhaust port 3 of a pneumatic device 2 in a direction substantially parallel to a discharge direction of exhaust gas. Therefore, when the space for installing the silencer cannot be obtained due to the installation location or installation posture of the pneumatic equipment, as shown in FIG. It is attached to the exhaust port 3 of.

However, in either case where the silencer 1 is directly attached to the exhaust port 3 of the pneumatic equipment 2 or is attached by a joint 4 such as an elbow, it is difficult to change the attachment posture of the silencer 1, so that the silencer 1 Depending on the mounting orientation, the required noise suppression effect may not be obtained. The noise countermeasure effect here refers to the effect of making the exhaust sound less likely to reach the ears of workers, etc., so that it does not feel as noise even if the silencer does not sufficiently muffle the exhaust sound. .

[0004]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to provide an elbow type silencer having a high noise countermeasure effect.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the elbow type silencer of the present invention comprises a mounting body and a silencer body rotatably mounted on the outer peripheral surface of the mounting body, the mounting body being mounted for mounting on a pneumatic device. And a fixing means for fixing the silencer body at an arbitrary position on the outer peripheral surface of the mounting body. It is characterized by having a sound absorbing material and an exhaust outlet.

In order to solve the same problem, a large number of exhaust outlets are provided on the outer peripheral surface of the silencer body in the elbow silencer, and a cover for directing the exhaust exhausted from these outlets in a desired direction is provided. Is attached to the silencer body so as to be rotatable and fixed to an arbitrary position in the circumferential direction with a space provided between the silencer body and the outer peripheral surface of the silencer body.

[0007]

[Action]

 When the elbow type silencer is directly attached to the pneumatic equipment by the attachment part of the attachment body, the silencer body rotatably attached to the attachment body can be oriented in any direction around the axial direction of the attachment body, and the silencer is provided by the fixing means. The body can be fixed in that direction. Therefore, the installation posture of the silencer body with respect to the pneumatic equipment can be oriented in a direction in which exhaust noise does not easily reach the ears of workers, etc., considering the installation location of the pneumatic equipment, etc. it can. In addition, the silencer can be directly attached to pneumatic equipment even if the installation space is small.

Further, by rotating the cover attached to the silencer main body to exhaust the exhaust air exhausted from the entire outer peripheral surface of the silencer main body in a desired direction, the exhaust sound further reaches the ear of the worker or the like. Since it can be made difficult, the noise countermeasure effect can be further enhanced.

[0009]

FIG. 1 shows an embodiment of the present invention, in which an elbow type silencer 10 is mounted on an exhaust port (not shown) of an appropriate pneumatic equipment, and is rotated around the mounting body 11. And a silencer body 12 that is freely attached. The attachment body 11 includes an attachment portion 14 such as a male screw for attaching to the exhaust port at one end in the axial direction, a regular hexagonal tool locking portion 15 for inserting a tool for attachment at the other end, and an external male screw 16 on the outer circumference. And the fitting portion 17 between them, and the cylindrical portion 18 of the silencer body 12 is rotatably mounted on the outer periphery of the fitting portion 17. The air flow path 20 opened in the mounting portion 14 is opened to the circumferential groove 22 formed in the fitting portion 17 by the radial openings 21, ..., And the O-rings 23, 23 are provided on both sides in the axial direction of the circumferential groove 22. It is hermetically sealed by. The silencer body 12 includes the cylindrical portion 18 and a cylindrical case 25 extending integrally in the radial direction thereof, and a disc-shaped sound absorbing material 27 is provided at a stop ring 28 at an exhaust outlet 26 at the tip of the case 25. Installed by.

The silencer 10 is assembled by fitting the cylindrical portion 18 of the silencer body 12 into the fitting portion 17 of the mounting body 11 and temporarily fixing the nut 29 constituting the fixing means to the male screw 16. However, the fixing means is not limited to the male screw 16 and the nut 29, but may be any means that can fix the silencer body 12 at any position in the circumferential direction of the mounting body 11.

The elbow type silencer 10 is configured such that an appropriate tool is fitted to the tool locking portion 15 of the mounting body 11 and the mounting body 14 is used to mount the mounting body 11 to the exhaust port (not shown) of the pneumatic equipment. When the body 12 is rotated with respect to the mounting body 11 and the nut 29 is tightened to the male screw 16 at an appropriate position on the outer periphery of the mounting body 11, the silencer body 12 is fixed at that position. Therefore, the silencer main body 12 can be fixed in an arbitrary direction in a plane substantially orthogonal to the exhaust gas discharge direction, whereby the silencer 10 can be mounted in a posture in which the highest noise suppression effect can be obtained. Since the silencer 10 has the same function of silencing the exhaust gas, the description thereof is omitted.

FIG. 2 shows a second embodiment of the present invention. The silencer body 31 in this silencer 30 is a cylindrical portion having the above-mentioned tubular portion 18 and a plurality of exhaust outlets 33, ... The case 32 is closed, and the tip of the case 32 is closed by an end plate 34, and a hollow cylindrical sound absorbing material 35 is attached to the inner peripheral surface. The other structure and operation of the second embodiment are the same as those of the first embodiment except that the exhaust gas is discharged from the outlets 33, ... In the radial direction of the case. Therefore, detailed description is omitted.

FIGS. 3 and 4 show a third embodiment of the present invention in which exhaust gas is discharged in a desired direction. The silencer body 41 of this elbow silencer 40 includes the cylindrical portion 18 and the case 42. A cover 44 is provided on the case 42 to cover the entire length of the case in the axial direction and a part in the circumferential direction (half circumference in the illustrated example). The semicircular end plates 45, 45 fitted to the plate 34 are mounted so as to be rotatable in the circumferential direction and fixable at any position. Therefore, in the elbow type silencer 40, the silencer main body 41 is rotatable around the mounting body 11 in the axial direction, and the cover 44 is rotatable around the axial direction of the case 42. Although guides 46 and 46 are formed on both ends of the cover 44 in the circumferential direction, these guides may be omitted. Since the other structure of the third embodiment is the same as that of the second embodiment, the same portions as those in the drawing are designated by the same reference numerals and detailed description thereof will be omitted.

In the third embodiment, the silencer main body 41 is fixed to an arbitrary position around the axial direction of the mounting body 11 by the nut 29, and the cover 44 is rotated to an arbitrary position around the axial direction of the case 42. By fixing in that position, the exhaust gas exhausted from the entire circumference of the case 42 can be exhausted in a specific direction in which it is hard to reach the ears of a worker or the like, whereby the noise countermeasure effect can be further improved.

[0015]

[Effect of device]

 In the elbow type silencer of the present invention, the silencer body can be fixed in any direction around the mounting body in the axial direction, so that the effect of suppressing exhaust noise can be enhanced by selecting the mounting posture of the silencer body. Further, even if the mounting space is small, it can be mounted directly on the pneumatic equipment without using any other member such as a joint, so that the mounting work is simple.

Further, by providing the cover around the outlet of the exhaust gas so as to be rotatable and fixable at an arbitrary position, the exhaust gas is exhausted in the desired direction by the cover, and the effect of suppressing the noise of the exhaust gas is further enhanced. Can be increased.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a first embodiment.

FIG. 2 is a cross-sectional view of essential parts of a second embodiment.

FIG. 3 is a cross-sectional view of essential parts of a third embodiment.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is an explanatory view of a mounting mode of a known silencer.

FIG. 6 is an explanatory diagram of a mounting mode using an elbow.

[Explanation of symbols]

 10, 30, 40 Elbow type silencer 11 Mounting body 12, 31, 41 Silencer body 14 Mounting portion 20 Air flow path 27, 33 Outlet 28, 35 Sound absorbing material 29 Nut 44 Cover

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[Procedure amendment]

[Submission date] August 3, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of reference signs] 10,30,40 Elbow type silencer 11 Mounting body 12,31,41 Silencer body 14 Mounting portion 20 Air flow paths 26 , 33 Outlet 27 , 35 Sound absorbing material 29 Nut 44 Cover

Claims (2)

[Scope of utility model registration request] 1. A mounting body, and a silencer body rotatably mounted on an outer peripheral surface of the mounting body, wherein the mounting body is a mounting portion for mounting to a pneumatic device.
The silencer body is provided with an air flow path for communicating exhaust gas discharged from the pneumatic equipment into the silencer body, and a fixing means for fixing the silencer body to an arbitrary position on the outer peripheral surface of the mounting body, wherein the silencer body is a sound absorbing material. , An exhaust outlet, and an elbow type silencer. 2. A silencer body is provided with a large number of exhaust outlets on its outer peripheral surface, and a cover is provided between the outer peripheral surface of the silencer body and a cover for directing exhaust gas discharged from these outlets in a desired direction. The elbow silencer according to claim 1, wherein the silencer body is rotatably attached to the silencer body and can be fixed at any position in the circumferential direction.