Silencing device for air outlet of pressing shell

Abstract

The utility model relates to a silencing device for an air outlet of a pressure shell. The noise reduction device comprises an attaching ferrule and a noise reduction barrel detachably installed on the outer side surface of the attaching ferrule, the inner side wall face of the noise reduction barrel is movably sleeved with an inner container plastic barrel, the inner side wall face of the inner container plastic barrel is movably sleeved with a shockproof ceramic barrel, the inner side wall face of the shockproof ceramic barrel is fixedly connected with a conical noise reduction barrel, and the conical noise reduction barrel is fixedly connected with the inner side wall face of the conical noise reduction barrel. The inner side wall face of the shockproof ceramic cylinder is covered with a silencing sponge layer arranged on the outer side surface of the conical silencing cylinder. When the air outlet of the shell pressing machine exhausts air at a high speed, the conical silencing barrel on the inner side wall surface of the shockproof ceramic barrel is matched to decelerate the air flowing at a high speed, so that excessive friction between high-speed airflow and an equipment shell is reduced, and sound wave noise generated by airflow friction is preliminarily reduced; and when the residual noise is transmitted through the conical noise reduction barrel, the noise reduction sponge layer on the outer side surface of the conical noise reduction barrel is matched for secondary noise reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of air outlet silencing, in particular to a silencing device for the air outlet of a pressing shell. Background Technique

[0002] A muffler is a device that reduces or prevents the spread of sound but allows the flow of air. Mufflers are widely used in fields such as electric power, petroleum, chemical industry, and food, and have excellent characteristics such as small size, light weight, and simple structure. In the assembly process of an electromagnetic clutch, loading the electromagnetic coil into the housing is a rather important process. In the prior art, this process is completed by manually operating a pressing shell tooling. The specific process is as follows: Place the housing on the base of the pressing shell tooling, then manually place the electromagnetic coil on the upper end of the housing and align it with the annular groove of the housing, and manually operate the handle to press the electromagnetic coil into the annular groove of the housing through the pressing head of the pressing shell tooling.

[0003] Currently, in the prior art, due to the relatively fast air flow speed generated when the dental machine is working, the high-speed flowing air rubs against the equipment during entry and exit, thereby generating extremely loud sound waves. Most existing mufflers are made of metal. As a result, when sound waves are generated by the air flow, the noise will directly pass through the metal products on the surface of the muffler and then be transmitted to the outside, thereby eliminating the noise. Moreover, the high-speed flowing air will also generate jet noise inside the muffler. At this time, the muffler cannot eliminate the noise generated by the relatively fast air flow.

[0004] Therefore, the utility model provides a silencing device for the air outlet of a pressing shell. Content of the Utility Model

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the metal muffler cannot eliminate the sound waves generated by the noise, and the noise will directly pass through the surface of the metal muffler and then be directly transmitted to the outside, thereby causing noise pollution.

[0006] To solve the above technical problem, the utility model provides a silencing device for the air outlet of a pressing shell, which includes a fitting ring and a muffler cylinder detachably installed on the outer surface of the fitting ring. An inner liner plastic cylinder is movably sleeved on the inner wall surface of the muffler cylinder. A shock-proof ceramic cylinder is movably sleeved on the inner wall surface of the inner liner plastic cylinder. A conical muffler cylinder is fixedly connected to the inner wall surface of the shock-proof ceramic cylinder. A sound-absorbing sponge layer provided on the outer surface of the conical muffler cylinder is covered on the inner wall surface of the shock-proof ceramic cylinder. Hollow plastic hoses are fixedly connected to the outer surface of the shock-proof ceramic cylinder and located at both side edge positions.

[0007] In an embodiment of the present utility model, an inner liner plastic cylinder is fixedly connected to the outer surface of the hollow plastic hose, and elevation strips are provided on the outer surface of the inner liner plastic cylinder and at both edge positions.

[0008] In an embodiment of the present utility model, a waterproof strip is provided on the outer surface of the elevation strip, and a cavity is provided between the inner liner plastic cylinder and the shockproof ceramic cylinder.

[0009] In an embodiment of the present utility model, the outer surface of the elevation strip is movably sleeved on the inner wall surface of the sound-absorbing cylinder, and clamping washer plates are movably sleeved on both side surfaces of the sound-absorbing cylinder.

[0010] In an embodiment of the present utility model, a threaded rod is movably sleeved on the outer surfaces of the clamping washer plate and the sound-absorbing cylinder, and an alternating butt joint cylinder is provided on the outer surface of the clamping washer plate.

[0011] In an embodiment of the present utility model, extrusion rice noodle strips are provided on the outer surface of the fitting ring, and threaded holes are provided on the outer surface of the fitting ring.

[0012] In an embodiment of the present utility model, a bolt is movably sleeved on the inner wall surface of the threaded hole.

[0013] In an embodiment of the present utility model, a butt joint sleeve movably sleeved on the outer wall surface of the alternating butt joint cylinder is fixedly connected to the other side surface of the fitting ring.

[0014] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0015] For a sound-absorbing device for the air outlet of a pressing shell of the present utility model, when the air outlet of the pressing shell machine discharges gas at high speed, the conical sound-absorbing cylinder on the inner wall surface of the shockproof ceramic cylinder is used to reduce the speed of the high-speed flowing gas, reducing excessive friction between the high-speed air flow and the equipment shell, thereby initially reducing the sound wave noise generated by the air flow friction. When the remaining noise is transmitted through the conical sound-absorbing cylinder, it is cooperated with the sound-absorbing sponge layer on the outer surface of the conical sound-absorbing cylinder for secondary noise reduction. The sound-absorbing sponge layer absorbs the sound waves inside the noise, reducing the reflection and scattering of sound, thereby achieving initial sound-absorbing treatment. Moreover, the overall material of the sound-absorbing sponge layer is relatively soft and has many internal voids, achieving the effect that the vibration generated by the high-speed flowing air flow in contact with the sound-absorbing sponge layer will gradually reduce the rebound and vibration, greatly reducing the noise transmitted due to vibration.

[0016] A silencing device for the air outlet of the pressure shell of the present utility model. When the remaining noise and vibration pass through the sound-absorbing sponge layer and are directly transmitted to the surface of the shock-proof ceramic cylinder, the hollow plastic hose on the outer surface of the shock-proof ceramic cylinder is used to perform secondary vibration damping on the vibration of the shock-proof ceramic cylinder. At the same time, in cooperation with the hollow state inside the hollow plastic hose, when the shock-proof ceramic cylinder vibrates, it will squeeze the surface of the hollow plastic hose. When the hollow plastic hose is squeezed, it will deform, providing elastic buffering for the vibration of the shock-proof ceramic cylinder. At the same time, in cooperation with the resilience of the hollow plastic hose, it will rebound and recover. The elastic recovery of the hollow plastic hose can also perform vibration damping treatment on the vibration of the shock-proof ceramic cylinder. The shock-proof ceramic cylinder is suspended inside the inner liner plastic cylinder, so that no matter how the shock-proof ceramic cylinder vibrates, it will not directly contact the surface of the inner liner plastic cylinder, and the vibrating shock-proof ceramic cylinder will not directly transmit to the inside of the inner liner plastic cylinder, achieving the effect of using suspension and elastic recovery to perform vibration damping treatment on the vibrating shock-proof ceramic cylinder and reducing the vibration and noise that will directly pass through the shell and be transmitted out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model in conjunction with the drawings.

[0018] Figure 1 is a three-dimensional view of the present utility model;

[0019] Figure 2 is an exploded perspective structural schematic diagram of the sound-absorbing cylinder in the present utility model;

[0020] Figure 3 is an exploded perspective structural schematic diagram of the inner liner plastic cylinder in the present utility model;

[0021] Figure 4 is a perspective structural schematic diagram of the inner liner plastic cylinder in the present utility model;

[0022] Figure 5 is a three-dimensional structural schematic diagram of the conical sound-absorbing cylinder in the present utility model.

[0023] Explanation of the reference numerals in the drawings of the specification: 11, fitting ring; 111, extruded rice noodle strip; 112, threaded hole; 113, bolt; 114, docking sleeve; 12, sound-absorbing cylinder; 121, threaded rod; 122, clamping washer plate; 123, staggered docking cylinder; 124, inner liner plastic cylinder; 125, heightening strip; 126, waterproof strip; 127, hollow plastic hose; 128, shock-proof ceramic cylinder; 129, sound-absorbing sponge layer; 1210, conical sound-absorbing cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited do not limit the present utility model.

[0025] Referring to Figures 1 to 5 As shown, a silencing device for the air outlet of a pressing shell of the present utility model includes a fitting ring 11 and a silencing cylinder 12 detachably installed on the outer surface of the fitting ring 11. An inner liner plastic cylinder 124 is movably sleeved on the inner wall surface of the silencing cylinder 12. A shock-proof ceramic cylinder 128 is movably sleeved on the inner wall surface of the inner liner plastic cylinder 124. A conical silencing cylinder 1210 is fixedly connected to the inner wall surface of the shock-proof ceramic cylinder 128. A silencing sponge layer 129 provided on the outer surface of the conical silencing cylinder 1210 is covered on the inner wall surface of the shock-proof ceramic cylinder 128. Hollow plastic hoses 127 are fixedly connected to the outer surface of the shock-proof ceramic cylinder 128 and located at both side edge positions.

[0026] During operation, when the air outlet of the pressing shell machine discharges gas at a high speed, the conical silencing cylinder 1210 on the inner wall surface of the shock-proof ceramic cylinder 128 is used to reduce the speed of the highly flowing gas, reducing excessive friction between the high-speed air flow and the equipment shell, thereby initially reducing the sound wave noise generated by air flow friction. When the remaining noise is transmitted through the conical silencing cylinder 1210, the silencing sponge layer 129 on the outer surface of the conical silencing cylinder 1210 is used for secondary noise reduction. The silencing sponge layer 129 absorbs the sound waves inside the noise, reducing the reflection and scattering of sound, thereby achieving initial silencing treatment. Moreover, the overall material of the silencing sponge layer 129 is relatively soft and has many internal voids, achieving the effect that the vibration generated by the high-speed flowing air flow in the conical silencing cylinder 1210 will gradually reduce the rebound and vibration after contacting the silencing sponge layer 129, greatly reducing the noise transmitted due to vibration.

[0027] When the residual noise and vibration pass directly through the sound-absorbing sponge layer 129 and are transmitted to the surface of the shock-proof ceramic cylinder 128, the hollow plastic hose 127 on the outer surface of the shock-proof ceramic cylinder 128 is used to perform secondary vibration damping on the vibration of the shock-proof ceramic cylinder 128. At the same time, in cooperation with the hollow state inside the hollow plastic hose 127, when the shock-proof ceramic cylinder 128 vibrates, it will squeeze the surface of the hollow plastic hose 127. When the hollow plastic hose 127 is squeezed, it will deform, elastically buffer the vibration of the shock-proof ceramic cylinder 128, and at the same time, in cooperation with the resilience of the hollow plastic hose 127, it will rebound and recover. The elastic recovery of the hollow plastic hose 127 can also perform vibration damping treatment on the vibration of the shock-proof ceramic cylinder 128. The shock-proof ceramic cylinder 128 is suspended inside the inner liner plastic cylinder 124, so that no matter how the shock-proof ceramic cylinder 128 vibrates, it will not directly contact the surface of the inner liner plastic cylinder 124, so that the vibrating shock-proof ceramic cylinder 128 will not be directly transmitted to the inside of the inner liner plastic cylinder 124, achieving the effect of using suspension and elastic recovery to perform vibration damping treatment on the vibrating shock-proof ceramic cylinder 128 and reducing the vibration and noise that will directly pass through the outer shell and be transmitted out.

[0028] Further, as Figures 1 to 5 shown, the inner liner plastic cylinder 124 is fixedly connected to the outer surface of the hollow plastic hose 127. The outer surface of the inner liner plastic cylinder 124 and at the positions of both side edges are provided with elevation strips 125. The outer surface of the elevation strips 125 is provided with waterproof strips 126. A cavity is provided between the inner liner plastic cylinder 124 and the shock-proof ceramic cylinder 128. The outer surface of the elevation strip 125 is movably sleeved on the inner wall surface of the sound-absorbing cylinder 12. The two side surfaces of the sound-absorbing cylinder 12 are movably sleeved with clamping washer plates 122. A threaded rod 121 is movably sleeved on the outer surfaces of the clamping washer plate 122 and the sound-absorbing cylinder 12. The outer surface of the clamping washer plate 122 is provided with an interleaved docking cylinder 123. The outer surface of the fitting ring 11 is provided with extrusion rice noodle strips 111. The outer surface of the fitting ring 11 is provided with threaded holes 112. A bolt 113 is movably sleeved on the inner wall surface of the threaded hole 112. The other side surface of the fitting ring 11 is fixedly connected to a docking sleeve 114 that is movably sleeved on the outer wall surface of the interleaved docking cylinder 123.

[0029] During operation, the fitting collar 11 is fitted to the air outlet of the housing press. The bolt 113 passes through the threaded hole 112 to fix the fitting collar 11 on the surface of the housing press. As the bolt 113 continuously squeezes and fixes, the extrusion rice noodle strip 111 is softly fitted to the surface of the outer shell. The extrusion rice noodle strip 111 is used to reduce excessive friction between the fitting collar 11 and the equipment. When the vibration generated during the passage of air flow through the inside of the muffler cylinder 12 is directly transmitted to the surface of the fitting collar 11, it will cause excessive shaking of the fitting collar 11 on the surface of the housing press. At the same time, the extrusion rice noodle strip 111 is used to reduce the shaking force of the fitting collar 11, thereby preventing the fitting collar 11 from falling off the surface of the equipment due to shaking. The staggered docking cylinder 123 is sleeved on the surface of the docking sleeve 114, and the muffler cylinder 12 is fixed on the surface of the docking sleeve 114 by the staggered docking cylinder 123 to limit the position of the muffler cylinder 12, so that the air flow from the air outlet of the housing press can be directly transmitted into the inside of the muffler cylinder 12. At the same time, the anti-vibration ceramic cylinder 128 is used to perform noise elimination on the gas, and then the threaded rod 121 is inserted into the surfaces of the muffler cylinder 12 and the clamping washer plate 122 to limit the position of the muffler cylinder 12 on the surface of the docking sleeve 114.

[0030] Working principle: The fitting collar 11 is fitted to the air outlet of the housing press. The bolt 113 passes through the threaded hole 112 to fix the fitting collar 11 on the surface of the housing press. As the bolt 113 continuously squeezes and fixes, the extrusion rice noodle strip 111 is softly fitted to the surface of the outer shell. The extrusion rice noodle strip 111 is used to reduce excessive friction between the fitting collar 11 and the equipment. When the vibration generated during the passage of air flow through the inside of the muffler cylinder 12 is directly transmitted to the surface of the fitting collar 11, it will cause excessive shaking of the fitting collar 11 on the surface of the housing press. At the same time, the extrusion rice noodle strip 111 is used to reduce the shaking force of the fitting collar 11, thereby preventing the fitting collar 11 from falling off the surface of the equipment due to shaking.

[0031] When the air outlet of the housing press discharges gas at high speed, the conical muffler cylinder 1210 on the inner side wall surface of the anti-vibration ceramic cylinder 128 is used to reduce the speed of the high-speed flowing gas, reducing excessive friction between the high-speed air flow and the equipment shell, thereby initially reducing the sound wave noise generated by air flow friction. When the remaining noise is transmitted through the conical muffler cylinder 1210, the sound-absorbing sponge layer 129 on the outer surface of the conical muffler cylinder 1210 is used for secondary noise reduction. The sound-absorbing sponge layer 129 absorbs the sound waves inside the noise, reducing the reflection and scattering of sound, thereby achieving initial noise elimination. Moreover, the overall material of the sound-absorbing sponge layer 129 is relatively soft and has many internal voids, so that the vibration generated by the high-speed flowing air flow in contact with the sound-absorbing sponge layer 129 will gradually reduce rebound and vibration, greatly reducing the effect of noise transmission due to vibration.

[0032] When the residual noise and vibration pass directly through the sound-absorbing sponge layer 129 and are transmitted to the surface of the shock-proof ceramic cylinder 128, the hollow plastic hose 127 on the outer surface of the shock-proof ceramic cylinder 128 is used to perform secondary vibration damping on the vibration of the shock-proof ceramic cylinder 128. At the same time, in cooperation with the hollow state inside the hollow plastic hose 127, when the shock-proof ceramic cylinder 128 vibrates, it will squeeze the surface of the hollow plastic hose 127. When the hollow plastic hose 127 is squeezed, it will deform, elastically buffer the vibration of the shock-proof ceramic cylinder 128, and at the same time, in cooperation with the resilience of the hollow plastic hose 127, it will rebound and recover. The elastic recovery of the hollow plastic hose 127 can also perform vibration damping treatment on the vibration of the shock-proof ceramic cylinder 128. The shock-proof ceramic cylinder 128 is suspended inside the inner liner plastic cylinder 124, so that no matter how the shock-proof ceramic cylinder 128 vibrates, it will not directly contact the surface of the inner liner plastic cylinder 124, and the vibrating shock-proof ceramic cylinder 128 will not directly transmit to the inside of the inner liner plastic cylinder 124. The effect of using suspension and elastic recovery to perform vibration damping treatment on the vibrating shock-proof ceramic cylinder 128 and reducing the vibration and noise from directly passing through the outer shell and being transmitted out is achieved.

[0033] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. The obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A silencing device for the air outlet of a pressing shell, comprising a fitting ring (11) and a silencing cylinder (12) detachably installed on the outer surface of the fitting ring (11), characterized in that: An inner plastic cylinder (124) is movably sleeved on the inner side wall surface of the muffler cylinder (12). A shock-absorbing ceramic cylinder (128) is movably sleeved on the inner side wall surface of the inner plastic cylinder (124). A conical muffler cylinder (1210) is fixedly connected to the inner side wall surface of the shock-absorbing ceramic cylinder (128). A sound-absorbing sponge layer (129) provided on the outer surface of the conical muffler cylinder (1210) is covered on the inner side wall surface of the shock-absorbing ceramic cylinder (128). Hollow plastic hoses (127) are fixedly connected to the outer surface of the shock-absorbing ceramic cylinder (128) and are located at both side edge positions.

2. The silencing device for the air outlet of the pressing shell according to claim 1, characterized in that: An inner plastic cylinder (124) is fixedly connected to the outer surface of the hollow plastic hose (127). Raised strips (125) are provided on the outer surface of the inner plastic cylinder (124) and are located at both side edge positions.

3. The silencing device for the air outlet of the pressure shell according to claim 2, characterized in that: A waterproof strip (126) is provided on the outer surface of the raised strip (125). A cavity is provided between the inner plastic cylinder (124) and the shock-absorbing ceramic cylinder (128).

4. The silencing device for the air outlet of the pressure shell according to claim 2, characterized in that: The outer surface of the raised strip (125) is movably sleeved on the inner side wall surface of the muffler cylinder (12). Clamping washer plates (122) are movably sleeved on both side surfaces of the muffler cylinder (12).

5. The silencing device for the air outlet of the pressure shell according to claim 4, characterized in that: A threaded rod (121) is threadedly and movably sleeved on the outer surfaces of the clamping washer plate (122) and the muffler cylinder (12). An interleaved docking cylinder (123) is provided on the outer surface of the clamping washer plate (122).

6. The silencing device for the air outlet of the pressure shell according to claim 1, wherein: Extruded rice noodle strips (111) are provided on the outer surface of the fitting ring (11). Threaded holes (112) are provided on the outer surface of the fitting ring (11).

7. The silencing device for the air outlet of the pressure shell according to claim 6, wherein: A bolt (113) is threadedly and movably sleeved on the inner side wall surface of the threaded hole (112).

8. The silencing device for the air outlet of the pressure shell according to claim 7, characterized in that: A docking sleeve (114) which is movably sleeved on the outer side wall surface of the interleaved docking cylinder (123) is fixedly connected to the other side surface of the fitting ring (11).

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