A vibration-absorbing and sound-damping device for a precision detection instrument experiment table

Abstract

The application discloses a vibration-absorbing and sound-absorbing device for a precision detection instrument experiment table, which is used for reducing the noise and vibration of the air path of the experiment table and comprises the following components: an air inlet assembly, a Tesla sound-absorbing assembly, two symmetrical semi-cylindrical sound-absorbing blocks, a plurality of Tesla flow channels arranged on the sound-absorbing blocks, the Tesla flow channels receiving the airflow provided by the air inlet assembly, a cylindrical sound-absorbing column formed by the two symmetrical semi-cylindrical sound-absorbing blocks, a first elastic metal sheet arranged on the joint surface of the two symmetrical semi-cylindrical sound-absorbing blocks, a cavity arranged on the outer circumference of the sound-absorbing column, and a shear thickening fluid STF filled in the cavity, a vibration-absorbing assembly and an air outlet assembly. The application has the beneficial effect that the vibration and noise of the pneumatic pipeline used in the precision detection experiment table are greatly reduced, and a low-noise and stable working environment is provided for the precision detection.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of precise detection instrument, and particularly relates to a vibration-absorbing and noise-eliminating device for a precise detection instrument test bench. BACKGROUND

[0002] The precise detection instrument is a special device field, and is very sensitive to noise and vibration in a working process. The vibration and noise can affect a detection result, so that the detection result deviates from an actual detection value.

[0003] There are two reasons for causing the vibration of the pneumatic pipeline. One is vibration caused by poor dynamic balance of a compressor, and the other is resonance caused by airflow vibration.

[0004] The vibration caused by the poor dynamic balance of the compressor can be solved by arranging the compressor away from the precise detection instrument.

[0005] Since the pneumatic pipeline needs to be connected to the precise detection instrument, the resonance caused by the airflow vibration is inevitably introduced into the precise detection instrument, thereby affecting the detection of the precise detection instrument.

[0006] In the prior art, the resonance caused by the airflow vibration is mainly solved by two methods.

[0007] 1. A buffer structure is added, the diameter of the pipeline is changed, the natural frequency of the pipeline is changed, and the generation of the resonance is weakened.

[0008] 2. A hole plate is arranged, the propagation path of the sound wave in the airflow is changed, the sound wave is changed from a pressure standing wave to a traveling wave in the propagation process, and the vibration of the starting pipeline is weakened.

[0009] However, in the prior art, the noise and the vibration of the pneumatic pipeline cannot be effectively reduced at the same time, and the detection precision is affected in the application of the pneumatic actuator in the precise detection instrument test bench. Therefore, the problem of the vibration and the noise of the pneumatic pipeline affecting the detection result of the precise detection instrument test bench still exists. SUMMARY

[0010] The present application aims to solve the problem of the vibration and the noise of the pneumatic pipeline affecting the detection result of the precise detection instrument test bench.

[0011] In order to achieve the above object, the present application provides a vibration-absorbing and noise-eliminating device for a precise detection instrument test bench.

[0012] The specific technical scheme adopted by the present application is as follows.

[0013] A kind of vibration-absorbing sound-absorbing device for precision detection instrument experiment table, for reducing the noise and vibration of experiment table gas path, the vibration-absorbing sound-absorbing device includes:

[0014] Air inlet assembly for connecting gas path pipeline and supplying the airflow of gas path pipeline to vibration-absorbing sound-absorbing device;

[0015] Tesla sound-absorbing assembly, including two symmetrical half-cylindrical sound-absorbing blocks, a plurality of Tesla flow channels are provided on the sound-absorbing block, the Tesla flow channel receives the airflow provided by the air inlet assembly;Two symmetrical half-cylindrical sound-absorbing blocks are closed to form a cylindrical sound-absorbing column, the junction surface of the two symmetrical half-cylindrical sound-absorbing blocks is separated by a first elastic metal sheet, a cavity is provided on the outer circumference of the sound-absorbing column, and the cavity is filled with shear thickening liquid STF, and the first elastic metal sheet extends into the shear thickening liquid STF in the cavity;

[0016] Vibration absorption assembly, including air pipe, air pipe is inserted in the cavity, air pipe is connected with the Tesla flow channel, the pipe wall of air pipe is provided with a plurality of thin-walled cavities, one side of thin-walled cavity is in contact with the airflow of air pipe, and the other side of thin-walled cavity is in contact with shear thickening liquid STF in the cavity;

[0017] Air outlet assembly for connecting gas path pipeline and discharging the airflow processed by vibration-absorbing sound-absorbing device.

[0018] With such design, air inlet assembly and air outlet assembly connect the vibration-absorbing sound-absorbing device of the application in pneumatic pipeline, without considering the arrangement of pipeline, without considering the specific transformation position of pipeline diameter change, only need to connect the application in pneumatic pipeline according to requirements, for example, install a vibration-absorbing sound-absorbing device one meter before entering precision detection instrument experiment table, and for example, connect vibration-absorbing sound-absorbing device at the adapter of gas path in precision detection instrument experiment table.

[0019] Tesla flow channel in Tesla sound-absorbing assembly adopts the principle of Tesla valve, which is prior art, when airflow passes through Tesla valve in positive direction, fluid will be divided into two ways at each loop port, then two fluids will converge at the next intersection and achieve acceleration, on the contrary, if airflow flows into Tesla valve in reverse direction, fluid will also be divided into two ways at the first intersection, and converge again at the second intersection, the difference is that, this time, the flow directions of two airflows are opposite, so great resistance is formed, therefore, Tesla flow channel can pass in positive direction, while in reverse direction, two airflows interact to weaken the impact force of fluid.

[0020] According to the principle of the above-mentioned Tesla flow channel, the gas flow in the gas path is reversed through the Tesla flow channel, so that the sound waves in the gas flow cancel each other out, and meanwhile, the Tesla flow channel is provided with a plurality of channels, so that the gas flow before and after the Tesla flow channel remains consistent; and the first elastic metal sheet is provided, the vibration of the gas path and the impact of the gas flow are transmitted to the first elastic metal sheet, and since the first elastic metal sheet extends into the shear thickening liquid STF in the cavity, the pipeline vibration caused by the gas flow is ultimately transmitted to the shear thickening liquid STF in the cavity.

[0021] The shear thickening liquid STF is composed of polyethylene glycol and silicon particles, the polyethylene glycol is a widely used non-toxic liquid, which can withstand a wide temperature range, and the extremely small silicon particles are another component of the STF. When the motion is slow, the hard particles can move everywhere, and the shear thickening liquid STF appears in a liquid state, but when the motion is rapid, the hard particles collide with each other, hindering each other's movement, and the shear thickening liquid STF becomes strong. This liquid with strong flow and hard particles combined can form a rigid material, and when the vibration is weakened or disappears, the shear thickening liquid STF again restores to a liquid state.

[0022] Therefore, the pipeline vibration caused by the gas flow is ultimately transmitted to the shear thickening liquid STF in the cavity, and is absorbed by the shear thickening liquid STF in the cavity for its transformation from a liquid state to a solid state. Since the vibration is absorbed, the vibration is weakened or even disappears. At this time, since the vibration is not continuously supplied, the shear thickening liquid STF again restores to a liquid state, and when the next pipeline vibration caused by the gas flow is ultimately transmitted to the shear thickening liquid STF in the cavity, the purpose of absorbing vibration is achieved again.

[0023] It should be noted that the resonance caused by the vibration of the gas flow, the vibration and the noise occur at the same time, and the vibration absorption and noise reduction of the Tesla flow channel and the first elastic metal sheet are not independent, that is, the Tesla flow channel reduces the transmission of vibration while reducing noise, and similarly, the vibration absorption function of the first elastic metal sheet also reduces the transmission of sound in the gas flow.

[0024] Further, the wall of the air pipe is provided with a plurality of thin-walled cavities, one side of the thin-walled cavity is in contact with the gas flow of the air pipe, and the other side of the thin-walled cavity is in contact with the shear thickening liquid STF in the cavity. The thin-walled cavity has the same effect as the first elastic metal sheet. After the gas flow leaves the Tesla flow channel, the residual sound waves and impact force in the gas flow continue to act on the thin-walled cavity through the air pipe and are transmitted to the shear thickening liquid STF and are further absorbed.

[0025] Through the above series of vibration absorption and noise reduction, the impact force and sound waves are greatly weakened or even disappear when the gas flow reaches the actuator, and according to the principle of the communicating vessel, the gas reaching the actuator still maintains the original pressure for driving the actuator to move.

[0026] As a further improvement of the present application, a sealing gasket is arranged between the combination surface of the first elastic metal sheet and the semi-cylindrical sound-absorbing block, for preventing the leakage of gas in the Tesla flow channel and preventing the leakage of the shear thickening liquid STF filled in the cavity.

[0027] As a further improvement of the present application, a second elastic metal sheet is arranged on the flow channel wall of the Tesla flow channel, the second elastic metal sheet is clamped on the flow channel wall, and the second elastic metal sheet extends into the shear thickening liquid STF in the cavity.

[0028] With such a design, the contact area of the sound wave in the gas flow in the Tesla flow channel to the shear thickening liquid STF is increased, thereby absorbing more sound waves and transmitting the vibration caused by the sound waves to the shear thickening liquid STF for its transformation from liquid to solid, so as to achieve the purpose of vibration absorption and sound absorption.

[0029] As a further improvement of the present application, a second elastic metal sheet is arranged on the flow channel wall of the Tesla flow channel, the second elastic metal sheet is clamped on the flow channel wall, and the second elastic metal sheet extends into the shear thickening liquid STF in the cavity.

[0030] As a further improvement of the present application, the second elastic metal sheet is connected with the first elastic metal sheet, and extends into the shear thickening liquid STF in the cavity through the first elastic metal sheet.

[0031] As a further improvement of the present application, the thin-walled cavity is in an ellipsoidal shape, and two apices in the long axis direction of the thin-walled cavity are welded with the pipe wall of the air pipe.

[0032] As a further improvement of the present application, the thin-walled cavity is filled with shear thickening liquid STF, and the concentration of the shear thickening liquid STF filled in the thin-walled cavity is A, the concentration of the shear thickening liquid STF filled in the cavity is B, and A>B.

[0033] As a further improvement of the present application, the thin wall of the thin-walled cavity is provided with a plurality of wrinkles for increasing the contact area with the gas flow.

[0034] As a further improvement of the present application, the air outlet assembly is provided with an air outlet pipe, the inner diameter of the air outlet pipe is C, the inner diameter of the air pipe is D, and C>2D. The diameter of the pipeline is changed to change the natural frequency of the pipeline to further weaken the generation of resonance.

[0035] As a further improvement of the present application, the end of the air outlet pipe is a quick connector for connecting a subsequent gas pipeline.

[0036] The positive effects of the present application are:

[0037] 1. The gas flow in the gas circuit reverses through the Tesla flow channel, so that the sound waves in the gas flow cancel each other out, and the Tesla flow channel is provided with a plurality of channels, so that the gas flow before and after the Tesla flow channel remains consistent, and the pipeline vibration caused by the gas flow is ultimately transmitted to the shear thickening liquid STF in the cavity, achieving the purpose of absorbing vibration.

[0038] 2. After the gas flow leaves the Tesla flow channel, the residual sound waves and impact force in the gas flow continue to act on the thin-walled cavity through the air pipe, and are transmitted to the shear thickening liquid STF and further absorbed.

[0039] 3. The air inlet assembly and the air outlet assembly connect the vibration-absorbing and sound-absorbing device of the present application in the pneumatic pipeline, without considering the arrangement of the pipeline, without considering the specific transformation position of the pipeline diameter change, only need to connect the present application in the pneumatic pipeline according to the requirements, and it is convenient to connect. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a quarter of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application, and is a quarter of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application.

[0041] Figure 2 is Figure 1 is a structural schematic view of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application.

[0042] Figure 3 is Figure 2 is an E-E sectional view of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application.

[0043] Figure 4 is Figure 3 is an enlarged view of M of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application.

[0044] Figure 5 is Figure 4 is an enlarged view of N of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application.

[0045] Figure 6 is Figure 5 is a structural schematic view of the second elastic metal sheet of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application.

[0046] Figure 7 is a sectional view of the vibration-absorbing and sound-absorbing device for a precision detection instrument experimental table of the present application, which shows the structural arrangement state of the first elastic metal sheet.

[0047] Legend: 1 - first quick connector, 2 - air inlet assembly, 3 - sound attenuation column, 301 - sound attenuation block, 302 - clamping groove, 4 - cavity, 401 - cavity wall, 5 - air pipe, 6 - thin-walled cavity, 7 - air outlet pipe, 8 - end quick connector, 9 - first elastic metal sheet, 10 - Tesla flow channel, 1001 - main flow channel, 1002 - intersection flow channel, 1003 - rotary flow channel, 11 - flow channel connector, 12 - air pipe connector, 13 - air pipe inlet hole, 14 - air pipe external connector, 15 - fixing screw hole, 16 - first elastic metal sheet base, 17 - first elastic metal sheet tooth part, 18 - main flow channel first elastic metal sheet, 1801 - rotary flow channel first elastic metal sheet, 18011 - first encapsulation layer, 18012 - shear thickening fluid STF, 18013 - second encapsulation layer, 1802 - flange, 19 - Tesla sound attenuation assembly, 20 - vibration absorption assembly, 21 - air outlet assembly. DETAILED DESCRIPTION

[0048] The application will be described in detail below with reference to the drawings and specific embodiments: EMBODIMENTS

[0050] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0051] In order to make the purpose, technical scheme and advantages of the application clearer and more apparent, the application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and do not limit the application.

[0052] The specific implementation of the application will be described in detail below with reference to specific embodiments.

[0053] Embodiment one:

[0054] A vibration absorption and sound attenuation device for a precision detection instrument experimental table, for reducing the noise and vibration influence of the air path on the precision detection instrument experimental table, the vibration absorption and sound attenuation device comprising:

[0055] The air inlet assembly 2 is used to connect the air path pipeline and supply the air flow of the air path pipeline to the vibration absorption and sound attenuation device.

[0056] Specifically, as shown in Figure 1 , Figure 2 and Figure 3 , the air inlet end of the air inlet assembly 2 is provided with a first quick connector 1, which is a gas path quick connector and is a mature prior art known to those skilled in the art, and will not be repeated here. In addition, the first quick connector 1 can also be replaced by a thread to connect the gas path pipeline and supply the gas flow of the gas path pipeline to the vibration absorption and sound elimination device. The air outlet end of the air inlet assembly 2 is connected to the air inlet end of the Tesla sound elimination assembly 19 through a flange sheet, and a sealing gasket is provided at the connection to prevent gas leakage. The middle part of the air inlet assembly 2 is a light hole for gas flow.

[0057] The Tesla sound elimination assembly 19 includes two symmetrical semi-cylindrical sound elimination blocks 301, which are provided with a plurality of Tesla flow channels 10 that receive the gas flow provided by the air inlet assembly 2. The two symmetrical semi-cylindrical sound elimination blocks 301 are closed to form a cylindrical sound elimination column 3, and the joint surface of the two symmetrical semi-cylindrical sound elimination blocks 301 is separated by a first elastic metal sheet 9. The outer circumference of the sound elimination column 3 is provided with a cavity 4, which is filled with a shear thickening liquid STF. The first elastic metal sheet 9 extends into the shear thickening liquid STF in the cavity 4.

[0058] Specifically, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 7 , the air outlet end of the air inlet assembly 2 is connected to the air inlet end of the Tesla sound elimination assembly 19 through a flange sheet, and a sealing gasket is provided at the connection to prevent gas leakage. The middle part of the Tesla sound elimination assembly 19 is provided with two symmetrical semi-cylindrical sound elimination blocks 301, which are closed to form a cylindrical sound elimination column 3. The closed surface is provided with a first elastic metal sheet 9 to separate the symmetrical Tesla flow channels 10. The first elastic metal sheet 9 includes a first elastic metal sheet base 16, and the two sides of the first elastic metal sheet base 16 extend into the shear thickening liquid STF in the cavity 4. The cavity 4 is sleeved on the outside of the cylindrical sound elimination column 3. In particular, the two sides of the first elastic metal sheet base 16 are provided with a first elastic metal sheet tooth portion 17 to increase the contact area of the first elastic metal sheet 9 with the shear thickening liquid STF. The thin plate tooth structure arranged in cantilever form is beneficial to transmitting vibration to the shear thickening liquid STF. The air outlet end of the Tesla sound elimination assembly 19 is provided with a flow channel connector 11 to collect the gas flowing out of each Tesla flow channel 10 and connect with an air pipe connector 12 to supply the gas flowing out of the Tesla flow channel 10 to the air pipe 5.

[0059] The Tesla flow channel in the Tesla silencing assembly adopts the principle of the Tesla valve. When the airflow flows forward through the Tesla valve, the fluid is divided into two paths at each loop opening. Then the two paths of fluid converge at the next intersection and achieve acceleration. Conversely, if the airflow flows reversely into the Tesla valve, the fluid is also divided into two paths at the first intersection and converges again at the second intersection. The difference is that the flow directions of the two airflows are opposite, so a great resistance is formed. Therefore, the Tesla flow channel can pass forward, while the two airflows interact to weaken the impact force of the fluid when flowing reversely.

[0060] According to the principle of the Tesla flow channel, the airflow in the gas path is reversely passed through the Tesla flow channel, so that the sound waves in the airflow cancel each other out, Figure 3 As shown, the airflow is divided into two paths and enters the rotary flow channel 1003 and the main flow channel 1001 of the Tesla flow channel 10, respectively. Then the two paths of fluid converge at the next intersection, i.e., the intersection flow channel 1002, so that the sound waves and impact force in the airflow cancel each other out and weaken. At the same time, the Tesla flow channel is provided with a plurality of Tesla flow channels, so that the airflow flow rates before and after the Tesla flow channels remain consistent. The vibration of the gas path and the impact of the airflow are transmitted to the first elastic metal sheet. Since the first elastic metal sheet extends into the shear thickening fluid STF in the cavity, the pipeline vibration caused by the airflow is ultimately transmitted to the shear thickening fluid STF in the cavity.

[0061] The shear thickening fluid STF is composed of polyethylene glycol and silicon particles. The polyethylene glycol is a widely used non-toxic liquid that can withstand a wide temperature range. The extremely small silicon particles are another component of the STF. When the motion is slow, the hard particles can move everywhere, and the shear thickening fluid STF appears in a liquid state. However, when the motion is rapid, the hard particles collide with each other, hindering each other's motion, and the shear thickening fluid STF becomes strong and tough. This liquid with strong flowability and hard particles combined can form a rigid material. When the vibration is weakened or disappears, the shear thickening fluid STF again restores to a liquid state.

[0062] Therefore, the pipeline vibration caused by the airflow is ultimately transmitted to the shear thickening fluid STF in the cavity, which is absorbed by the shear thickening fluid STF in the cavity for its transformation from a liquid state to a solid state. Since the vibration is absorbed, the vibration is weakened or even disappears. At this time, since the vibration is not continuously supplied, the shear thickening fluid STF again restores to a liquid state. When the pipeline vibration caused by the airflow is ultimately transmitted to the shear thickening fluid STF in the cavity again, the purpose of absorbing the vibration is achieved again.

[0063] It should be noted that the resonance caused by the vibration of the airflow, the vibration and the noise are generated at the same time, and the vibration absorption and noise reduction effect of the Tesla flow channel and the first elastic metal sheet are not independent, that is, the Tesla flow channel reduces the transmission of vibration while reducing noise, and similarly, the vibration absorption function of the first elastic metal sheet also reduces the transmission of sound in the airflow.

[0064] The vibration absorption assembly 20 comprises the air pipe 5 inserted into the cavity 4, the air pipe 5 is connected with the Tesla flow channel 10 through the flow channel joint 11, the airflow enters the air pipe 5 through the air pipe inlet hole 13, the pipe wall of the air pipe 5 is provided with a plurality of thin-wall cavities 6, one side of the thin-wall cavity 6 is in contact with the airflow of the air pipe 5, and the other side of the thin-wall cavity 6 is in contact with the shear thickening liquid STF in the cavity 4. The thin-wall cavity 6 has the same effect as the first elastic metal sheet 9. After the airflow leaves the Tesla flow channel 10, the residual sound waves and impact force in the airflow continue to act on the thin-wall cavity 6 through the air pipe 5, and are further absorbed by the shear thickening liquid STF.

[0065] In particular, the inner diameter of the air pipe 5 is E, and the inner diameter of the air pipe inlet hole 13 is F, E>2F

[0066] The air outlet assembly 21 is used to connect the air path pipeline and discharge the airflow treated by the vibration absorption and noise reduction device.

[0067] Specifically, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 7 , the air outlet assembly 21 is threadedly connected to the air pipe 5 through the air pipe external joint 14, the air outlet assembly 21 is sleeved with the cavity 4, the end portion is provided with the end quick connector 8, the end quick connector 8 is an air path quick connector, which is a mature prior art, and its structure is well known to those skilled in the art, which will not be repeated here. In addition, the end quick connector 8 can also be replaced by a threaded connection, and the end quick connector 8 is also provided with a fixing screw hole 15, which is suitable for the working environment of end face connection.

[0068] With such a design, the air inlet assembly and the air outlet assembly connect the vibration absorption and noise reduction device of the present application in the pneumatic pipeline, without considering the arrangement of the pipeline, without considering the specific transformation position of the pipeline diameter change, only need to connect the present application in the pneumatic pipeline according to the requirements, for example, install a vibration absorption and noise reduction device one meter before entering the precision detection instrument experimental table, and for example, connect the vibration absorption and noise reduction device at the adapter of the air path in the precision detection instrument experimental table.

[0069] The gas flow in the gas path is reversed through the Tesla flow channel, so that the sound waves in the gas flow cancel each other out, and the Tesla flow channel is provided with a plurality of channels, so that the gas flow before and after the Tesla flow channel remains consistent, and the pipeline vibration caused by the gas flow is finally transmitted to the shear thickening liquid STF in the cavity through the first elastic metal sheet, thereby achieving the purpose of absorbing vibration.

[0070] After the gas flow leaves the Tesla flow channel, the residual sound waves and impact force in the gas flow continue to act on the thin-walled cavity through the air pipe, and are transmitted to the shear thickening liquid STF and are further absorbed.

[0071] Embodiment two:

[0072] On the basis of embodiment one, the flow channel wall of the Tesla flow channel 10 is provided with a card slot 302 in the shape of a Chinese character, and the second elastic metal sheet is provided with a Chinese character-shaped flange 1802, and the flange 1802 cooperates with the card slot 302.

[0073] Specifically, as shown in Figure 4 and Figure 5 , the Tesla flow channel 10 is divided into a rotary flow channel 1003 and a main flow channel 1001, and the second elastic metal sheet is arranged in the main flow channel 1001 and is called a main flow channel second elastic metal sheet 18, and the second elastic metal sheet is arranged in the rotary flow channel 1003 and is called a rotary flow channel second elastic metal sheet 1801. Taking the flow channel wall of the rotary flow channel 1003 as an example, the flow channel wall of the rotary flow channel 1003 is provided with a card slot 302 in the shape of a Chinese character, and the second elastic metal sheet is provided with a Chinese character-shaped flange 1802, which is clamped in the card slot 302, thereby fixing the rotary flow channel second elastic metal sheet 1801 on the flow channel wall of the rotary flow channel 1003.

[0074] Embodiment three:

[0075] On the basis of embodiment two, as shown in Figure 5 , the second elastic metal sheet includes a first packaging layer 18011 and a second packaging layer 18013, and the first packaging layer 18011 and the second packaging layer 18013 are metal substrates of the second elastic metal sheet. Taking the main flow channel second elastic metal sheet 18 as an example, the metal substrate of the main flow channel second elastic metal sheet 18 is provided with a slot penetrating the metal substrate, and the slot is encapsulated with shear thickening liquid STF 18012 through the first packaging layer 18011 and the second packaging layer 18013.

[0076] The foregoing has broadly outlined some aspects and features of various embodiments, which should be interpreted as merely illustrative of a potential application. Other beneficial results can be obtained by applying the disclosed information in different ways or by combining aspects of the disclosed embodiments. Other aspects and more comprehensive understandings can be obtained by referring to the specific description of the exemplary embodiments in conjunction with the drawings, which are limited by the scope defined by the claims.

[0077] The above embodiments have been described in detail. Of course, the above description is not a limitation on the present application, and the present application is not limited to the above examples. Changes, modifications, additions or reductions, and replacements made by those skilled in the art within the spirit and scope of the present application also belong to the protection scope of the present application.

Claims

1. A vibration and noise absorbing device for a precision detection instrument experiment table, used for reducing the noise and vibration of the air path of the experiment table, characterized in that, The vibration-absorbing and sound-damping device comprises: an air inlet assembly for connecting an air path pipeline and supplying air flow of the air path pipeline to the vibration-absorbing and sound-damping device; a Tesla sound-damping assembly comprising two symmetrical semi-cylindrical sound-damping blocks, the sound-damping blocks being provided with a plurality of Tesla flow channels, the Tesla flow channels receiving the air flow provided by the air inlet assembly, the two symmetrical semi-cylindrical sound-damping blocks being closed to form a cylindrical sound-damping column, a combination surface of the two symmetrical semi-cylindrical sound-damping blocks being separated by a first elastic metal sheet, an outer circumference of the sound-damping column being provided with a cavity, the cavity being filled with shear thickening fluid STF, the first elastic metal sheet extending into the shear thickening fluid STF in the cavity; a vibration-absorbing assembly comprising an air pipe, the air pipe being inserted into the cavity, the air pipe being connected with the Tesla flow channels, a pipe wall of the air pipe being provided with a plurality of thin-wall cavities, one side of the thin-wall cavities being in contact with air flow of the air pipe, the other side of the thin-wall cavities being in contact with the shear thickening fluid STF in the cavity; an air outlet assembly for connecting the air path pipeline and discharging the air flow processed by the vibration-absorbing and sound-damping device.

2. The vibration absorbing and sound absorbing device for the experimental table of the precision detection instrument according to claim 1, characterized in that, A sealing gasket is arranged between the first elastic metal sheet and the combination surface of the semi-cylindrical sound-damping block, for preventing air leakage in the Tesla flow channels and preventing leakage of the shear thickening fluid STF filled in the cavity.

3. The vibration absorbing and sound eliminating device for the experimental table of the precision detection instrument according to claim 2, characterized in that, A second elastic metal sheet is arranged on a flow channel wall of the Tesla flow channel, the second elastic metal sheet being clamped on the flow channel wall, the second elastic metal sheet extending into the shear thickening fluid STF in the cavity.

4. The vibration absorbing and sound eliminating device for the experimental table of the precision detection instrument according to claim 3, characterized in that, A Jia groove is arranged on the flow channel wall of the Tesla flow channel, the second elastic metal sheet being provided with a Jia flange, the flange being matched with the Jia groove.

5. The vibration absorbing and sound absorbing device for the experimental table of the precision detection instrument according to claim 4, characterized in that, The second elastic metal sheet is connected with the first elastic metal sheet and extends into the shear thickening fluid STF in the cavity through the first elastic metal sheet.

6. The vibration-absorbing and noise-damping device for the experimental table of the precision detection instrument according to any one of claims 1 to 5, characterized in that, The thin-wall cavities are ellipsoidal, two apices of a long axis direction of the thin-wall cavities being welded to the pipe wall of the air pipe.

7. The vibration absorbing and sound absorbing device for the experimental table of the precision detection instrument according to claim 6, characterized in that, The thin-wall cavities are filled with shear thickening fluid STF, and a concentration of the shear thickening fluid STF filled in the thin-wall cavities is A, a concentration of the shear thickening fluid STF filled in the cavity is B, A > B.

8. The vibration absorbing and sound absorbing device for the experimental table of the precision detection instrument according to claim 7, characterized in that, The thin wall of the thin-wall cavities is provided with a plurality of wrinkles for increasing a contact area with the air flow.

9. The vibration absorbing and sound eliminating device for the experimental table of the precision detection instrument according to claim 8, characterized in that, The air outlet assembly is provided with an air outlet pipe, an inner diameter of the air outlet pipe is C, an inner diameter of the air pipe is D, C > 2D.

10. The vibration absorbing and sound eliminating device for the experimental table of the precision detection instrument according to claim 9, characterized in that, A quick connector at an end of the air outlet pipe is used for connecting a subsequent air path pipeline.

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