A non-contact ultrasonic shearing and crushing device

Abstract

This utility model relates to a non-contact ultrasonic shearing and crushing device in the field of ultrasonic shearing and crushing technology. It proposes a unique solution to the contradiction between the top surface area of ​​the amplitude transformer and the ultrasonic amplitude in existing non-contact ultrasonic instruments. Breaking away from the fixed approach of connecting only one amplitude transformer to the ultrasonic transducer, it innovatively proposes that the aforementioned contradiction can be resolved by adding one or more amplitude transformers. These added amplitude transformers can be traditional half-wavelength amplitude transformers or designed as full-wavelength amplitude transformers, reducing the use of central fastening bolts. Through systematic optimization of the ultrasonic transducer and the structure of two or more amplitude transformers, the dual objectives of increasing the output amplitude and output area of ​​the final amplitude transformer are achieved. This allows for the processing of more difficult-to-crush samples and the simultaneous processing of more sample tubes.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic shearing and crushing technology, specifically, a non-contact ultrasonic shearing and crushing device. Background Technology

[0002] Ultrasonic waves are sound waves with frequencies higher than 20,000 Hz, and are mechanical longitudinal waves that propagate in elastic media. The core component of an ultrasonic shearing and crushing device is the ultrasonic transducer, which consists of several ring-shaped piezoelectric ceramic plates stacked sequentially and secured by a metal front and rear cover via a central screw. When a high-frequency, regular electrical signal is applied to the positive and negative terminals of the piezoelectric ceramic plates, high-frequency, regular mechanical deformation is generated, causing the entire ultrasonic transducer to produce a high-frequency, regular mechanical longitudinal wave. When the frequency of the high-frequency, regular electrical signal is above 20,000 Hz, the generated high-frequency, regular mechanical longitudinal wave is ultrasonic.

[0003] Ultrasound can generate cavitation in liquid environments. Because ultrasound can squeeze and tear liquids at high frequencies, it generates countless microscopic bubbles, also known as cavitation bubbles. These continuously generated cavitation bubbles expand rapidly and burst instantly, forming microscopic high-pressure shock waves and shear forces. This can destroy various microscopic forces between substances, thereby achieving applications such as cleaning oil stains, cell disruption, DNA shearing, oil-water emulsification, and traditional Chinese medicine extraction.

[0004] Currently, in the field of ultrasonic liquid handling, there are two types of ultrasonic crushing instruments, but each has its own problems.

[0005] The first category is traditional probe-type ultrasonic disruptors, where the ultrasonic probe is directly inserted into the liquid sample for ultrasonic treatment. The biggest drawback is that the direct contact between the ultrasonic probe and the liquid sample can easily cause cross-contamination between samples. At the same time, the sample tube cap is open during ultrasonic treatment, which can cause sample splashing and atomization that can spread through the air. Therefore, this type of product has limited its application range.

[0006] The second category is non-contact ultrasonic disruptors, also known as water tank ultrasonic instruments. These instruments involve immersing the bottom of the sample tube in an ultrasonic water tank for ultrasonic treatment. Their structure is similar to an ultrasonic cleaner, where the ultrasonic transducer is directly mounted on the outside of the bottom of the water tank. Because the ultrasonic waves need to pass through the bottom panel of the ultrasonic water tank and then use the water as a transmission medium to transfer the ultrasonic energy to the sample tube, there is a large loss of ultrasonic energy. Even if multiple ultrasonic transducers are attached, this defect cannot be well compensated for. As a result, this type of ultrasonic instrument can only be used for simple purposes such as cell disruption.

[0007] Besides the design of directly attaching the ultrasonic transducer to the bottom of the water tank, there is a more advanced technical approach. The ultrasonic transducer is connected to an amplitude transformer via a central bolt. Part of the amplitude transformer is embedded in the water tank. The ultrasonic waves output from the top surface of the amplitude transformer are transmitted to the sample tubes through the water, significantly shortening the ultrasonic transmission path and reducing ultrasonic loss. The most important aspect of this technology is the structural design of the amplitude transformer, especially its top surface, which is the ultrasonic output surface. An excessively large surface area will reduce the ultrasonic amplitude, thus reducing ultrasonic energy; an excessively small surface area will prevent the ultrasonic waves from radiating to all sample tubes; and an excessively small surface area will limit the number of sample tubes that can be processed. There is a trade-off between the surface area of ​​the amplitude transformer and the ultrasonic amplitude. Secondly, this amplitude transformer also requires a water-sealed structure design. Currently, the water-sealed design is complex and needs improvement. Furthermore, since ultrasonic liquid processing generates a large amount of heat, a cooling device must be provided for the ultrasonic water tank. Current cooling methods include either coiling several copper pipes inside the tank or creating a jacket around the tank, both of which are indirect cooling methods with insufficient heat exchange and unsatisfactory cooling effects, requiring further improvement. Utility Model Content

[0008] The purpose of this invention is to provide a non-contact ultrasonic shearing and crushing device, which proposes a unique solution to the contradiction between the top surface area of ​​the amplitude transformer and the ultrasonic amplitude in existing non-contact ultrasonic instruments.

[0009] The purpose of this utility model is achieved as follows: a non-contact ultrasonic shearing and crushing device, comprising:

[0010] An ultrasonic water tank contains a medium liquid for transmitting ultrasonic waves.

[0011] The sample tube rack is detachably rotatably connected to the top of the ultrasonic water bath and located inside the ultrasonic water bath;

[0012] Multiple sample tubes, detachably connected to a sample tube rack and immersed in a medium solution in an ultrasonic bath, are used to contain biological samples.

[0013] A rotary drive device is installed on the top of the ultrasonic water bath and is connected to the sample tube rack to drive the sample tube rack and sample tube to rotate and change position.

[0014] Ultrasonic transducer;

[0015] An amplitude transformer assembly includes a first amplitude transformer and at least one second amplitude transformer. The first amplitude transformer is detachably connected to the output end of an ultrasonic transducer. The second amplitude transformer is detachably connected to the first amplitude transformer along the axial direction. A second amplitude transformer partially extends into an ultrasonic water bath. The second amplitude transformer is aligned with the sample tube along its axial direction and has a gap between it and the sample tube.

[0016] Furthermore, the amplitude lever assembly includes a first amplitude lever and a second amplitude lever.

[0017] Furthermore, both the first and second amplitude rods are rotating structures, and the first and second amplitude rods are coaxially connected from bottom to top.

[0018] Furthermore, the bottom of the ultrasonic water tank is provided with a through hole, and the second amplitude rod has a threaded portion that is threaded to engage with the through hole.

[0019] Furthermore, the lower end of the threaded portion of the second amplitude transformer is provided with an annular flange, which is located below the bottom of the ultrasonic water tank. An annular sealing ring is provided in the gap between the annular flange and the bottom of the ultrasonic water tank. The sealing ring is sleeved on the second amplitude transformer, and the annular flange presses the sealing ring upward against the bottom of the ultrasonic water tank.

[0020] Furthermore, it also includes an upper chassis, a lower chassis, and a middle partition. The middle partition serves as a partition between the upper chassis and the lower chassis. The upper chassis houses the ultrasonic water tank, and the lower chassis houses the ultrasonic transducer and the amplitude transformer assembly. The second amplitude transformer extends through the middle partition, and the middle partition supports an annular flange.

[0021] Furthermore, it also includes a chiller, which is equipped with cold water pipes and hot water pipes. Both the cold water pipes and hot water pipes are connected to the ultrasonic water tank and partially extend into the ultrasonic water tank. The water level in the ultrasonic water tank is flush with the opening of the hot water pipe, and the height of the opening of the hot water pipe is adjustable. A solenoid valve is installed in the cold water pipe, and a control module is installed in the lower casing. Both the rotary drive device and the solenoid valve are controlled by the control module.

[0022] Furthermore, the sample tube rack includes a vertical central rod and a base. The central axis of the central rod coincides with the central axis of the amplitude transformer assembly. All sample tubes are circumferentially distributed around the central axis of the central rod. The lower end of the central rod is integrally connected to a pressure cap and a locking threaded portion extending downward from the pressure cap. The base is provided with a screw hole and a plurality of positioning holes circumferentially distributed around the screw hole. Each sample tube is detachably inserted into a positioning hole. The locking threaded portion of the central rod is inserted into the screw hole of the base to press and fix the sample tubes.

[0023] Furthermore, the rotary drive device includes a rotary drive motor, a drive gear, and a driven gear. The driven gear is fixedly mounted on the central rod of the tube rack. The rotary drive motor is mounted on the top of the ultrasonic water tank. The drive gear is mounted on the output shaft of the rotary drive motor and meshes with the driven gear to drive the sample tube rack and sample tube to rotate horizontally.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. By adding an amplitude transformer to amplify the amplitude, the ultrasonic amplitude at the output end face can be increased. At the same time, the output end face area can be increased to cover and process more sample tubes, thus obtaining ideal and efficient ultrasonic shearing and crushing results.

[0026] 2. The second amplitude rod is connected to the ultrasonic water tank by the threaded engagement of the second amplitude rod with the bottom of the ultrasonic water tank, and a certain sealing effect is achieved. A sealing ring is also provided. The sealing ring is squeezed by the upper edge of the annular flange and the bottom plate of the ultrasonic water tank to achieve a good water sealing effect.

[0027] 3. A chiller and hot and cold water pipes are installed to cool / pre-cool the ultrasonic water bath and ultrasonic generator using circulating cooling water, while ensuring that the sample tubes are kept at a low temperature (a low temperature environment is especially important for biological samples). Attached Figure Description

[0028] Figure 1 This is the overall schematic diagram of the present invention.

[0029] Figure 2 This is a schematic diagram of the rotary drive device of this utility model.

[0030] Figure 3 This is a schematic diagram showing the connection details between the second amplitude transformer and the ultrasonic water tank.

[0031] Figure 4 This is a schematic diagram of the water circuit of a chiller. Detailed Implementation

[0032] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] like Figure 1-4 As shown, a non-contact ultrasonic shearing and crushing device is proposed, comprising:

[0034] The ultrasonic water tank 5 contains a medium liquid for transmitting ultrasonic waves. The medium liquid can be water or other types of liquid.

[0035] Sample tube holder 6 is detachably rotatably connected to the top of the ultrasonic water bath 5 and located inside the ultrasonic water bath 5.

[0036] Multiple sample tubes 7 are standard components with an external annular flange at their openings. The sample tubes 7 are detachably connected to the sample tube rack 6 and immersed in the medium liquid in the ultrasonic water bath 5. The sample tubes 7 are used to hold biological samples.

[0037] A rotary drive device is installed on the top of the ultrasonic water bath 5 and is connected to the sample tube rack 6 to drive the sample tube rack 6 and sample tube 7 to rotate and change position.

[0038] Ultrasonic transducer 1;

[0039] The amplitude transformer assembly includes a first amplitude transformer 2 and a second amplitude transformer 3. The first amplitude transformer 2 is detachably connected to the output end of the ultrasonic transducer 1 and can be connected by a threaded connection. The second amplitude transformer 3 is detachably connected to the first amplitude transformer 2 along the axial direction. The second amplitude transformer 3 is partially inserted into the ultrasonic water tank 5. The second amplitude transformer 3 is directly opposite the sample tube 7 along its axial direction and leaves a gap between it and the sample tube 7. The part of the second amplitude transformer 3 inside the ultrasonic water tank 5 is shaped like an inverted frustum cone, and its upper end surface is flat. When viewed from the projection angle, all sample tubes 7 are within the projection range of the upper end surface of the second amplitude transformer 3.

[0040] Chiller 14 is equipped with chilled water pipe 15 and hot water pipe 16. Both chilled water pipe 15 and hot water pipe 16 are connected to ultrasonic water tank 5 and partially extend into ultrasonic water tank 5. A solenoid valve 18 is provided in chilled water pipe 15. A control module 19 is provided in lower casing 13. The rotary drive device and solenoid valve 18 are both controlled by control module 19.

[0041] The upper housing 11, the lower housing 13, and the middle partition 12 are fixed between the upper housing 11 and the lower housing 13. The middle partition 12 serves as a partition between the upper housing 11 and the lower housing 13. The upper housing 11 accommodates the ultrasonic water tank 5, and the lower housing 13 accommodates the ultrasonic transducer 1 and the amplitude transformer assembly. The second amplitude transformer 3 passes through the middle partition 12.

[0042] The second amplitude rod 3 can also be called the final amplitude rod. In a preferred embodiment, the number of second amplitude rods 3 can be one or two. The second amplitude rod 3 added on the basis of the original first amplitude rod 2 can be a half-wavelength amplitude rod or a full-wavelength amplitude rod.

[0043] To address the inherent contradiction between the top surface area of ​​the amplitude transformer (AM) and the ultrasonic amplitude in existing non-contact ultrasonic instruments, a unique solution is proposed. Breaking away from the conventional approach of connecting only one AM to the ultrasonic transducer, this paper innovatively proposes resolving the contradiction by adding one or more AMs. These additional AMs can be traditional half-wavelength AMs or designed as full-wavelength AMs, reducing the need for a central fastening bolt. Through systematic optimization of the ultrasonic transducer and the structure of two or more AMs, the dual objectives of increasing both the output amplitude and output area of ​​the final AM are achieved. This allows for the processing of more difficult-to-break samples and the simultaneous processing of more sample tubes. In short, the final AM primarily increases the output area, while the other AMs are mainly used for progressively amplifying the amplitude.

[0044] like Figure 1 As shown, the first amplitude rod 2 and the second amplitude rod 3 are both rotating structures. The first amplitude rod 2 and the second amplitude rod 3 are coaxially connected from bottom to top. The upper end of the first amplitude rod 2 is integrally connected with a stud, which is threaded into the screw hole at the lower end of the second amplitude rod 3 to realize the detachable connection between the first amplitude rod 2 and the second amplitude rod 3.

[0045] In this embodiment, an upper chassis 11 and a lower chassis 13 are provided for the following purposes:

[0046] Because the entire ultrasonic generator is composed of an ultrasonic transducer 1 and at least two amplitude transformers, the entire ultrasonic generator is relatively tall. For example, taking a 20KHz ultrasonic generator as an example, the total height of one ultrasonic transducer plus two half-wavelength amplitude transformers is about 50cm; taking a 40KHz ultrasonic generator as an example, the total height of one ultrasonic transducer plus one half-wavelength amplitude transformer plus one full-wavelength amplitude transformer is about 40cm.

[0047] Therefore, the partition plate 12 between the stacked upper and lower housings 11 has a central circular hole. The second amplitude transformer 3 passes through the central circular hole of the partition plate 12 from top to bottom, and is fixed by the annular flange 3a of the second amplitude transformer 3 as a mounting platform. The upper and lower housings 11 and 13 ensure that the amplitude transformer and ultrasonic transducer 1 can be placed inside while making full use of the internal space of the upper and lower housings 11 and 13. The lower housing 13 can be used to install the control module 19. The front panel of the upper housing 11 can be equipped with an opening and closing window for opening and removing the sample tube rack 6. The side wall of the upper housing 11 can have dedicated positioning holes for connecting the cold water pipe 15 and the hot water pipe 16. The inner wall of the upper housing 11 is installed with sound insulation material to reduce ultrasonic noise interference. The integrated upper and lower cabinet structure greatly saves space, reduces cabling, and is simple and aesthetically pleasing.

[0048] The ultrasonic water tank 5 has a through hole 5a at its bottom, and the second amplitude rod 3 has a threaded portion that threadedly engages with the through hole 5a. The lower end of the threaded portion of the second amplitude rod 3 has an annular flange 3a, which is supported by a partition plate 12. The annular flange 3a is located below the bottom of the ultrasonic water tank 5. An annular sealing ring 4 is provided in the gap between the annular flange 3a and the bottom of the ultrasonic water tank 5. The sealing ring 4 is fitted onto the second amplitude rod 3. The annular flange 3a presses the sealing ring 4 upwards against the bottom of the ultrasonic water tank 5. The upper edge of the annular flange 3a and the bottom surface of the ultrasonic water tank 5 simultaneously compress the sealing ring 4, achieving a water-sealing effect.

[0049] The aforementioned sample tube rack 6 includes a vertical central rod 6a and a base 6c. The central axis of the central rod 6a coincides with the central axis of the amplitude transformer assembly. All sample tubes 7 are circumferentially distributed around the central axis of the central rod 6a. The lower end of the central rod 6a is integrally connected to a pressure cap 6b and a locking threaded portion 6e extending downward from the pressure cap 6b. The base 6c is provided with a screw hole and a plurality of positioning holes circumferentially distributed around the screw hole. The sample tubes 7 are detachably inserted into the positioning holes. The locking threaded portion 6e of the central rod 6a is inserted into the screw hole of the base 6c to press and fix the sample tubes 7.

[0050] The aforementioned rotary drive device includes a rotary drive motor 8, a drive gear 9, and a driven gear 10. The driven gear 10 fixes the central rod 6a of the tube rack and covers the opening at the top of the ultrasonic water tank 5. The rotary drive motor 8 is mounted on the top of the ultrasonic water tank 5. The drive gear 9 is mounted on the output shaft of the rotary drive motor 8 and meshes with the driven gear 10 to drive the sample tube rack 6 and the sample tube 7 to rotate horizontally.

[0051] To ensure that each sample tube 7 receives the exact same ultrasonic energy, a rotary drive motor 8 (preferably a slow-speed motor) is installed on the cover of the ultrasonic water tank 5. The output shaft of the rotary drive motor 8 is fixed with a drive gear 9, which meshes with the driven gear 10 of the sample tube holder 6, driving the driven gear 10 to rotate slowly, thereby driving the sample tube 7 to rotate slowly.

[0052] When the ultrasound is started, the upper end of the second amplitude rod 3 outputs ultrasonic waves, using water as the medium to transmit the ultrasonic waves, so that the output ultrasonic waves act on the sample tube 7. At the same time, the rotation drive motor 8 is powered on and runs, driving the sample tube rack 6 and the sample tube 7 to rotate slowly.

[0053] When the ultrasound is paused, the rotary drive motor 8 is powered off and stops operating, and the sample tube rack 6 and sample tube 7 also stop rotating.

[0054] The above-described ultrasonic start-pause process can be repeated.

[0055] This process design primarily aims to ensure that the rotation path of each sample tube 7 is almost identical, even when the ultrasonic energy dispersion at the output end face of the second amplitude transformer 3 is not sufficiently uniform. This guarantees that the ultrasonic energy received by each sample tube 7 is also almost identical, eliminating experimental errors caused by ultrasonic treatment between sample tubes 7. The process design concept of synchronous ultrasonic rotation of the sample tube rack 6 not only ensures that the sample tube rack 6 immediately stops rotating after the ultrasonic treatment procedure is completed, but also facilitates the removal of the sample tube rack 1.

[0056] This design also features a unique circulating cooling water mode: two holes are opened at the top of the ultrasonic water tank 5 to respectively insert and fix a cold water pipe 15 and a hot water pipe 16. The cold water pipe 15 pumps cold water from the chiller 14 into the ultrasonic water tank 5, while the hot water pipe 16 pumps the water at the upper layer of the ultrasonic water tank 5, which is at a higher temperature, out of the ultrasonic water tank 5 and back into the chiller 14. The chiller 14 is equipped with an operation panel 17 for setting and displaying the real-time water temperature. This achieves the cooling / pre-cooling of the ultrasonic water tank 5 and the ultrasonic generator using circulating cooling water, while ensuring that the sample tube 7 is kept at a low temperature (a low-temperature environment is particularly important for biological samples).

[0057] In the ultrasonic water bath 5, the hot water pipe 16 pumps out water that is higher than the pipe opening, so the water level in the ultrasonic water bath 5 is flush with the pipe opening of the hot water pipe 16. The water level in the ultrasonic water bath 5 can be adjusted by adjusting the height of the pipe opening of the hot water pipe 16. The hot water pipe 16 is adjustablely connected to the ultrasonic water bath 5, so as to flexibly match the water level requirements of different sample tubes 7.

[0058] To prevent the water flow from the cold water pipe 15 in the ultrasonic water tank 5 from affecting the ultrasonic effect, a solenoid valve 18 is installed on the cold water pipe 15 of the chiller. When the ultrasonic process is started, the control module 19 (main circuit board) in the lower casing 13 transmits a signal to the solenoid valve 18 via a signal line, closing the solenoid valve 18 to stop the water supply process of the cold water pipe 15. When the ultrasonic process is paused, the control module 19 in the lower casing 13 transmits a signal to the solenoid valve 18 via a signal line, opening the solenoid valve 18 to allow the cold water pipe 15 to resume its water supply process. This achieves the goal of ensuring that the circulating cooling water flow does not interfere with the ultrasonic process. The above-mentioned ultrasonic start-up and pause process constitutes one cycle and repeats continuously.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In this utility model, it should also be noted that the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connection, detachable connection, integral molding connection, mechanical connection, or indirect connection through intermediate connecting parts. The specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A non-contact ultrasonic shearing and crushing device, characterized in that, include: An ultrasonic water tank (5) contains a medium liquid for transmitting ultrasonic waves. The sample tube rack (6) is detachably rotatably connected to the top of the ultrasonic water bath (5) and located inside the ultrasonic water bath (5). Multiple sample tubes (7) are detachably connected to a sample tube rack (6) and immersed in a medium solution in an ultrasonic water bath (5). The sample tubes (7) are used to hold biological samples. A rotary drive device is installed on the top of the ultrasonic water bath (5) and is connected to the sample tube rack (6) to drive the sample tube rack (6) and sample tube (7) to rotate and change position. Ultrasonic transducer (1); An amplitude transformer assembly includes a first amplitude transformer (2) and at least one second amplitude transformer (3). The first amplitude transformer (2) is detachably connected to the output end of the ultrasonic transducer (1). The second amplitude transformer (3) is detachably connected to the first amplitude transformer (2) along the axial direction. The second amplitude transformer (3) is partially inserted into the ultrasonic water tank (5). The second amplitude transformer (3) is aligned with the sample tube (7) along its axial direction and has a gap between it and the sample tube (7).

2. The non-contact ultrasonic shearing and crushing device according to claim 1, characterized in that, The amplitude lever group includes a first amplitude lever (2) and a second amplitude lever (3).

3. The non-contact ultrasonic shearing and crushing device according to claim 2, characterized in that, The first amplitude rod (2) and the second amplitude rod (3) are both rotating structures, and the first amplitude rod (2) and the second amplitude rod (3) are coaxially connected from bottom to top.

4. The non-contact ultrasonic shearing and crushing device according to claim 3, characterized in that, The bottom of the ultrasonic water tank (5) is provided with a through hole (5a), and the second amplitude rod (3) has a threaded part that is threaded to the through hole (5a).

5. A non-contact ultrasonic shearing and crushing device according to claim 4, characterized in that, The lower end of the threaded portion of the second amplitude rod (3) is provided with an annular flange (3a). The annular flange (3a) is located below the bottom of the ultrasonic water tank (5). An annular sealing ring (4) is provided in the gap between the annular flange (3a) and the bottom of the ultrasonic water tank (5). The sealing ring (4) is sleeved on the second amplitude rod (3). The annular flange (3a) presses the sealing ring (4) upward against the bottom of the ultrasonic water tank (5).

6. A non-contact ultrasonic shearing and crushing device according to claim 5, characterized in that, It also includes an upper housing (11), a lower housing (13) and a middle partition (12), wherein the middle partition (12) is a partition between the upper housing (11) and the lower housing (13), the upper housing (11) houses the ultrasonic water tank (5), the lower housing (13) houses the ultrasonic transducer (1) and the amplitude transformer assembly, the second amplitude transformer (3) passes through the middle partition (12), and the middle partition (12) supports the annular flange (3a).

7. A non-contact ultrasonic shearing and crushing device according to claim 6, characterized in that, It also includes a chiller (14), which is equipped with a cold water pipe (15) and a hot water pipe (16). The cold water pipe (15) and the hot water pipe (16) are connected to the ultrasonic water tank (5) and partially extend into the ultrasonic water tank (5). The water level in the ultrasonic water tank (5) is flush with the opening of the hot water pipe (16). The height of the opening of the hot water pipe (16) is adjustable. The cold water pipe (15) is equipped with a solenoid valve (18). The lower casing (13) is equipped with a control module (19). The rotary drive device and the solenoid valve (18) are both controlled by the control module (19).

8. A non-contact ultrasonic shearing and crushing device according to claim 4, characterized in that, The sample tube rack (6) includes a vertical central rod (6a) and a base (6c). The central axis of the central rod (6a) coincides with the central axis of the amplitude transformer group. All sample tubes (7) are evenly distributed around the central axis of the central rod (6a). The lower end of the central rod (6a) is integrally connected with a pressure cap (6b) and a locking threaded part (6e) extending downward based on the pressure cap (6b). The base (6c) is provided with a screw hole and a plurality of positioning holes evenly distributed around the screw hole. Each sample tube (7) is detachably inserted into the positioning hole. The locking threaded part (6e) of the central rod (6a) is inserted into the screw hole of the base (6c) to press and fix the sample tube (7).

9. A non-contact ultrasonic shearing and crushing device according to claim 8, characterized in that, The rotary drive device includes a rotary drive motor (8), a drive gear (9) and a driven gear (10). The driven gear (10) is fixed to the central rod (6a) of the tube rack. The rotary drive motor (8) is installed on the top of the ultrasonic water tank (5). The drive gear (9) is installed on the output shaft of the rotary drive motor (8) and meshes with the driven gear (10) to drive the sample tube rack (6) and sample tube (7) to rotate horizontally.

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