Silencing butterfly valve with self-checking function

Abstract

The utility model discloses a noise elimination butterfly valve with a self-checking function. The noise elimination butterfly valve with the self-checking function comprises a valve body (1), a noise elimination structure (2) located in the valve body (1) and a sound wave focusing structure fixedly connected with the noise elimination structure (2). The sound wave focusing structure comprises a detection device, when the function of the silencing mechanism is reduced, sound waves are transmitted to the sound wave focusing structure from the silencing structure, and the detection device vibrates and presents a detection result. The noise elimination butterfly valve with the self-checking function can check whether the noise elimination capacity of the noise elimination butterfly valve is reduced or not in a self-checking mode and shows a detection result.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of silencing butterfly valve, specifically, relate to a silencing butterfly valve with self -checking function. BACKGROUND

[0002] The butterfly valve is also called flap valve, it is a simple structure regulating valve, can be used for controlling air, water, steam, various corrosive medium, mud, oil, liquid metal and radioactive medium and so on various types fluid flow. Butterfly valve needs to use silencing structure when working, but the existing butterfly valve will emit larger noise when controlling the flow rate of fluid in the pipeline, the silencing effect of the valve body is lower, which affects the working environment of the staff, may have influence on the hearing of the staff, reduces the practicality of the butterfly valve silencing structure.

[0003] And the utility model discloses a butterfly valve body silencing structure through the cooperation of valve body inner wall, perforated plywood, first sound absorption hole, silencing layer, artificial leather, hard fiber plate, asbestos cement board, aluminum plate, wood fiber absorption board, second sound absorption hole and valve body outer wall, through setting up silencing structure on the valve body, solve the problem that butterfly valve will emit larger noise when controlling the flow rate of fluid in the pipeline.

[0004] But the silencing structure in the above-mentioned utility model can appear the problem of silencing ability decline or even loss of silencing ability after a period of use, since the butterfly valve body silencing structure does not have self-checking function, therefore, it is difficult to be found in time in the initial stage of the silencing ability decline of butterfly valve body silencing structure, therefore, using the butterfly valve body silencing structure can still cause noise pollution in the environment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a silencing butterfly valve with self-checking function, which can self-check whether its silencing ability declines and present the detection result.

[0006] In order to realize the above-mentioned purpose, the utility model provides a silencing butterfly valve with self-checking function, which comprises a valve body, a silencing structure in the valve body and a sound wave focusing structure fixedly connected with the silencing structure.

[0007] The sound wave focusing structure comprises a detection device, when the function of the silencing structure declines, sound wave is transmitted to the sound wave focusing structure, the detection device vibrates and presents the detection result.

[0008] Preferably, the detection device comprises a thin film liquid bag and a display device matched with the thin film liquid bag.

[0009] When the sound wave focusing structure vibrates, the thin film liquid bag is broken, the liquid flows out, and the display device displays the detection result.

[0010] Preferably, the display device is configured as a color bar or a thin paper strip.

[0011] Preferably, the sound wave focusing structure further comprises a sound wave vibration belt and a plurality of sound wave focusing cylinders arranged uniformly along the circumference of the sound elimination structure, one end of the sound wave focusing cylinder is connected with the sound elimination structure, the other end of the sound wave focusing cylinder is connected with the sound wave vibration belt, and the detection device is fixedly connected with the sound wave vibration belt.

[0012] Preferably, the sound wave focusing cylinder is configured as a horn structure, the small end of the horn structure is connected with the sound elimination structure, and the large end of the horn structure is connected with the sound wave vibration belt.

[0013] Preferably, the sound wave focusing cylinder is connected with the sound elimination structure through a damping elastic pad.

[0014] Preferably, one side of the sound wave vibration belt facing the thin film liquid bag is provided with a short spike, and a spacing is arranged between the short spike and the thin film liquid bag.

[0015] Preferably, the detection device is arranged in the sound wave vibration belt, and the sound wave vibration belt is configured to be transparent.

[0016] Preferably, the valve body further comprises a sound insulation shell, and the sound insulation shell is arranged between two adjacent sound wave vibration belts.

[0017] According to the above technical scheme, when the sound elimination butterfly valve with the self-detection function works, the internal sound elimination structure can perform sound elimination processing on the noise generated by the valve body during work, when the function of the sound elimination structure does not decrease, the vibration energy generated by the valve body during work is almost completely absorbed by the sound elimination structure, so that the vibration energy leaked through the sound elimination structure is very small and is not enough to cause the vibration of the sound wave focusing structure.

[0018] When the function of the sound elimination structure decreases, the vibration energy leaked through the sound elimination structure increases, and when the energy increases to a certain extent, the vibration of the sound wave focusing structure can be caused, the vibration of the sound wave focusing structure acts on the detection device, and the detection device presents the detection result, thereby displaying the sound elimination ability of the sound elimination structure of the sound elimination butterfly valve with the self-detection function.

[0019] Therefore, the sound elimination butterfly valve with the self-detection function can timely detect the decrease of the sound elimination function of the sound elimination structure, and display the detection result through the detection device, so as to facilitate the staff to timely replace the butterfly valve or timely repair the sound elimination structure.

[0020] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, but are not intended to limit the present application. In the drawings:

[0022] Figure 1 is a structural schematic view of a muffling butterfly valve with self-checking function;

[0023] Figure 2 is a structural enlarged view of A place;

[0024] Figure 3 is another structural enlarged view of A place;

[0025] Figure 4 is a schematic view of sound wave propagation in a sound wave focusing cylinder.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1 valve body 2 sound attenuation structure

[0028] 31 thin film liquid bag 32 color developing strip

[0029] 33 sound wave vibration belt 34 sound wave focusing cylinder

[0030] 21 damping elastic pad 11 sound insulation shell

[0031] 35 thin paper strip DETAILED DESCRIPTION

[0032] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not intended to limit the present application.

[0033] In the present application, unless otherwise stated, the orientation words contained in the terms such as "inner", "one end", "the other end", "small end", "large end", "facing", "adjacent" only represent the orientation of the term in the normal use state, or the common name understood by those skilled in the art, and should not be regarded as a limitation of the term.

[0034] Referring to Figures 1-3 The muffling butterfly valve with self-checking function comprises a valve body 1, a sound attenuation structure 2 located in the valve body 1, and a sound wave focusing structure fixedly connected with the sound attenuation structure 2.

[0035] The sound wave focusing structure comprises a detection device, when the function of the sound elimination structure 2 is declined, the sound wave is transmitted to the sound wave focusing structure, the detection device vibrates and presents a detection result.

[0036] Through the implementation of the above technical solution, when the sound elimination butterfly valve with self-detection function works, the sound elimination structure 2 in the interior can eliminate the noise generated by the valve body when working, when the function of the sound elimination structure 2 is not declined, the vibration energy generated by the valve body working is almost all absorbed by the sound elimination structure 2, so that the vibration energy leaked through the sound elimination structure 2 is very little, which is not enough to cause the vibration of the sound wave focusing structure.

[0037] When the function of the sound elimination structure 2 is declined, the vibration energy leaked through the sound elimination structure 2 increases, when the energy increases to a certain extent, the vibration of the sound wave focusing structure can be caused, the vibration of the sound wave focusing structure acts on the detection device, and the detection device presents a detection result, which shows that the sound elimination ability of the sound elimination structure 2 of the sound elimination butterfly valve with self-detection function is declined.

[0038] Therefore, using the sound elimination butterfly valve with self-detection function can detect the decline of the sound elimination function of the sound elimination structure 2 in time, and the detection result is displayed through the detection device, so as to facilitate the workers to replace the butterfly valve in time or repair the sound elimination structure 2 in time.

[0039] In the embodiment, preferably, the detection device comprises a thin film liquid bag 31 and a display device matched with the thin film liquid bag 31.

[0040] When the sound wave focusing structure vibrates, the thin film liquid bag 31 is broken, liquid flows out, and the display device displays a detection result.

[0041] The detection device comprises a thin film liquid bag 31, the thin film liquid bag 31 contains liquid, the thin film of the thin film liquid bag 31 is very easy to break, when the thin film liquid bag 31 is broken, the liquid in it will flow out to wet the display device, the dry display device and the wet display device have obviously different states, and the workers can distinguish them very conveniently, therefore, the display device can reliably display the detection result.

[0042] Preferably, the thin film liquid bag 31 contains colored liquid, then, the dry display device and the wet display device will have obviously different colors, and the change of the color of the display device can reliably display the detection result.

[0043] In the embodiment, preferably, the display device is set as a color developing strip 32 or a thin paper strip 35.

[0044] The display device is set as a color bar 32. After the noise in the valve body 1 passes through the silencer structure 2, most of it will be absorbed. The unabsorbed sound propagates outward and enters the sound wave focusing structure. Then, the sound wave focusing structure starts to vibrate under the influence of the sound wave. The vibration of the sound wave focusing structure causes the film liquid bag 51 to be damaged. Figure 2 As shown, the liquid in the film liquid bag 51 flows out to the color strip 32, and the color strip 32 turns on. At this time, the staff can intuitively judge whether the silencer structure 2 is working normally and whether it has normal silencer function.

[0045] Alternatively, the display device is configured as a thin paper strip 35. Figure 3 As shown, the upward projection of the thin paper strip 35 extends outside the acoustic wave focusing structure. When the thin film liquid bag 31 ruptures, the dyeing liquid flows out and soaks the thin paper strip 35. Subsequently, the dyeing liquid gradually soaks along the thin paper strip 35 until it soaks the upward projection of the thin paper strip 35. Because paper contains a large number of fibers with extremely small gaps between them, capillaries are formed. Paper is soaked in water. The capillary principle allows water to quickly enter the gaps between the fibers. Surface tension exists between the wet paper and the water. At the same time, the water above the water surface is affected by gravity and the resistance of the capillary walls, which prevents the water from further expanding upward. Therefore, the water spreads above the water surface and reaches a certain height. At this point, these three forces are balanced, and the water will not continue to soak upward. At this point, the colored portion of the thin paper strip 35 can be used to visually determine whether the silencer structure 2 on the valve body 1 is functioning properly and whether it is performing its normal silencer function.

[0046] In this embodiment, preferably, the sound wave focusing structure also includes a sound wave vibration belt 33 and a plurality of sound wave focusing cylinders 34 evenly arranged along the circumference of the silencer structure 2, one end of the sound wave focusing cylinder 34 is connected to the silencer structure 2, and the other end of the sound wave focusing cylinder 34 is connected to the sound wave vibration belt 33, and the detection equipment is fixedly connected to the sound wave vibration belt 33.

[0047] Unabsorbed noise propagates outward through the sound-absorbing structure 2, where it is received by the sound-wave focusing cylinder 34, which is fixedly connected to the sound-absorbing structure 2. The vibration energy of the noise continues to propagate along the sound-wave focusing cylinder 34 to the sound wave vibration belt 33 at the other end of the sound wave focusing cylinder 34. Under the action of the vibration energy, the sound wave vibration belt 33 begins to vibrate.

[0048] The detection device is fixedly connected to the acoustic vibration belt 33, so that the vibration energy of the acoustic vibration belt 33 is transmitted to the detection device, and the film liquid bag 31 located in the detection device is damaged by the vibration, causing the display device to display the detection result.

[0049] In this embodiment, preferably, the sound wave focusing cylinder 34 is arranged in a horn structure, the small end of the horn structure is connected with the sound elimination structure 2, and the large end of the horn structure is connected with the sound wave vibration zone 33.

[0050] As shown in FIG. 1, the sound wave focusing cylinder 34 is arranged in a horn structure, and the sound is reflected and concentrated in the sound wave focusing cylinder 34. Due to the horn structure of the sound wave focusing cylinder 34, the sound reflected by the inner wall of the sound wave focusing cylinder 34 is concentrated, and thus the sound of the same intensity can be transmitted to a farther place. Figure 4

[0051] The sound transmitted by the sound elimination structure 2 enters the sound wave focusing cylinder 34 through the small end, is reflected by the inner wall of the sound wave focusing cylinder 34, and is concentrated to the large end of the sound wave focusing cylinder 34, and then is transmitted to the sound wave vibration zone 33, and the sound wave vibration zone 33 vibrates under the action of the sound.

[0052] The vibration of the sound wave vibration zone 33 causes the display device to display the detection result.

[0053] In this embodiment, preferably, the sound wave focusing cylinder 34 is connected with the sound elimination structure 2 through the damping elastic pad 21.

[0054] When the sound elimination butterfly valve with the self-checking function is normally working, the sound wave focusing cylinder 34 detects the vibration of the noise sound wave. Once the sound elimination structure 2 fails to function, noise is leaked, and the sound wave vibration is caused in the sound elimination butterfly valve with the self-checking function. The sound wave vibration affects the air in the sound wave focusing cylinder 34, and the air in the sound wave focusing cylinder 34 vibrates, as shown in FIG. 4, and is reflected to the sound wave vibration zone 33, and finally causes the display device to display the detection result, and the operator can find that the sound elimination structure 2 fails to function. Figure 4

[0055] However, the sound elimination structure 2 also vibrates due to the vibration of the valve body 1. Since the sound wave focusing cylinder 34 is fixedly connected with the sound elimination structure 2, the vibration of the sound elimination structure 2 is transmitted to the sound wave focusing cylinder 34 and affects the sound wave focusing cylinder 34 to mistakenly think that the noise is leaked in the sound elimination structure 2. Therefore, the damping elastic pad 21 is arranged to isolate the vibration of the sound elimination structure 2 and avoid the transmission of the vibration energy of the sound elimination structure 2 to the sound wave focusing cylinder 34.

[0056] Therefore, the damping elastic pad 21 is arranged to improve the accuracy of the detection device.

[0057] ​​In this embodiment, preferably, a side of the sonic vibration belt 33 facing the film liquid bag 31 is provided with short spikes, and a distance is provided between the short spikes and the film liquid bag 31 .

[0058] The side of the sonic vibration belt 33 facing the film liquid bag 31 is provided with short spikes, and a certain distance is set between the short spikes and the film liquid bag 31. Since the detection equipment is fixedly connected to the sonic vibration belt 33, when the sonic vibration belt 33 does not vibrate or the vibration amplitude is small, the short spikes on the sonic vibration belt 33 will not contact the film liquid bag 31, and the film liquid bag 31 will not be damaged. At this time, the detection equipment will not show that the function of the silencer structure 2 has declined.

[0059] When the amplitude of the sonic vibration belt 33 vibration is large, the broken thorns on the sonic vibration belt 33 will pierce the film liquid bag 31. At this time, the detection equipment shows that the function of the silencer structure 2 has declined.

[0060] In this embodiment, preferably, the detection device is disposed in the sonic vibration zone 33 , and the sonic vibration zone 33 is configured to be transparent.

[0061] The detection equipment is set in the sound wave vibration belt 33. When the sound wave vibration belt 33 vibrates, the film liquid bag 31 located in the sound wave vibration belt 33 will also vibrate. Since there is liquid in the film liquid bag 31, under the action of vibration energy, these liquids can easily break through the position limit of the film liquid bag 31, causing the surface of the film liquid bag 31 to deform. The deformed film liquid bag 31 can easily touch the broken thorns in the sound wave vibration belt 33, thereby causing the film liquid bag 31 to be damaged and the liquid in the film liquid bag 31 to flow out. The detection equipment shows that the function of the silencer structure 2 has declined.

[0062] Preferably, the film liquid bag 31 is attached to one side of the sonic vibration belt 33 and fixed to the side of the sonic vibration belt 33, and short spikes are provided on the other side of the film liquid bag 31 opposite to the film liquid bag 31. During use, because the film liquid bag 31 is fixed to one side of the sonic vibration belt 33, when no vibration occurs, the film liquid bag 31 and the sonic vibration belt 33 can maintain a relatively stable position, and the film liquid bag 31 will not encounter the short spikes. Only when the sonic vibration belt 33 vibrates will the film liquid bag 31 encounter the short spikes, thereby preventing the detection device from malfunctioning.

[0063] The sonic vibration strip 33 is set to be transparent so that the status of the detection device can be easily observed, thereby judging whether the function of the noise reduction structure 2 has declined.

[0064] In this embodiment, preferably, the valve body 1 further includes a sound insulation shell 11 , and a sound insulation shell 11 is provided between two adjacent sound wave vibration bands 33 .

[0065] The two adjacent sound wave vibration bands 33 can be separated by the sound insulation shell 11, so as to avoid mutual influence of the two sound wave vibration bands 33, and to cause inaccurate display results of the detection device.

[0066] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0067] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combination manners.

[0068] In addition, various different embodiments of the present application can also be combined in any manner, as long as they do not deviate from the technical concept of the present application, and they should also be considered as disclosed content of the present application.

Claims

1. A silent butterfly valve with self-checking function, characterized in that: The muffler butterfly valve with a self-checking function comprises a valve body (1), a muffler structure (2) located in the valve body (1), and a sound wave focusing structure fixedly connected to the muffler structure (2); The sound wave focusing structure includes a detection device. When the function of the muffler structure (2) decreases, the sound wave is transmitted to the sound wave focusing structure, and the detection device vibrates and presents the detection result.

2. The silent butterfly valve with self-checking function according to claim 1 is characterized in that: The detection device comprises a thin film liquid bag (31) and a display device coordinated with the thin film liquid bag (31); When the acoustic wave focusing structure vibrates, the thin film liquid bag (31) ruptures, the liquid flows out, and the display device displays the detection result.

3. The silent butterfly valve with self-checking function according to claim 2 is characterized in that: The display device is configured as a color display strip (32) or a thin paper strip (35).

4. The silent butterfly valve with self-checking function according to claim 2 is characterized in that: The sound wave focusing structure also includes a sound wave vibration belt (33) and a plurality of sound wave focusing cylinders (34) uniformly arranged along the circumference of the silencer structure (2), one end of the sound wave focusing cylinder (34) is connected to the silencer structure (2), and the other end of the sound wave focusing cylinder (34) is connected to the sound wave vibration belt (33), and the detection device is fixedly connected to the sound wave vibration belt (33).

5. The silent butterfly valve with self-checking function according to claim 4 is characterized in that: The sound wave focusing cylinder (34) is configured as a trumpet-shaped structure, the small end of the trumpet-shaped structure is connected to the muffler structure (2), and the large end of the trumpet-shaped structure is connected to the sound wave vibration belt (33).

6. The silent butterfly valve with self-checking function according to claim 5, characterized in that: The sound wave focusing cylinder (34) is connected to the noise reduction structure (2) via a vibration-damping elastic pad (21).

7. The silent butterfly valve with self-checking function according to claim 5, characterized in that: A side of the sonic vibration belt (33) facing the film liquid bag (31) is provided with short spikes, and a distance is provided between the short spikes and the film liquid bag (31).

8. The silent butterfly valve with self-checking function according to claim 7, characterized in that: The detection device is arranged in the sound wave vibration belt (33), and the sound wave vibration belt (33) is arranged to be transparent.

9. The silent butterfly valve with self-checking function according to claim 4, characterized in that: The valve body (1) further comprises a sound insulation shell (11), and the sound insulation shell (11) is provided between two adjacent sound wave vibration bands (33).

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