Noise reduction system for medical testing equipment based on acoustic principles

Abstract

The application belongs to the field of equipment noise reduction, and particularly relates to a medical detection equipment noise reduction system based on acoustic principle. The existing ultrasonic equipment cannot effectively reduce the noise generated during operation, and thus cannot be used in occasions with high noise requirements, and it is inconvenient to take and place cell samples. The present application provides the following scheme, which comprises a shell, the outer side of the shell is connected with a sealing plate, an installation cavity is formed in the shell, a connecting plate is fixedly installed on one side of the sealing plate, a translation mechanism is arranged on the connecting plate, a supporting plate is connected to the connecting plate, a lifting mechanism is arranged on the supporting plate, two symmetrical second sliding grooves are formed in the top of the supporting plate, the application can effectively reduce the noise generated during operation of the ultrasonic equipment, and thus can ensure that the equipment can be used in occasions with high noise requirements, and it is convenient to take and place cell samples, and the structure is simple and convenient to use.

Description

Technical Field

[0001] This invention relates to the field of equipment noise reduction technology, and in particular to a noise reduction system for medical testing equipment based on acoustic principles. Background Technology

[0002] An ultrasonic cell disruptor consists of two main parts: an ultrasonic generator and an ultrasonic transducer assembly. The ultrasonic generator (power supply) converts 220VAC, 50Hz single-phase electricity into 16-33kHz, approximately 600V alternating power through a frequency converter. With appropriate impedance and power matching, it drives the transducer to perform longitudinal mechanical vibration. The vibration waves, transmitted through a titanium alloy amplitude transformer immersed in the sample solution, create a cavitation effect on the various cells being disrupted, thus achieving cell disruption. The ultrasonic cell disruptor is a medical testing device based on acoustic principles. Ultrasonic noise actually originates from ultrasonic harmonics and the impact of the transducer against the steel plate. Ultrasonic waves are inaudible to the human ear. Typically, ultrasonic noise at 20-28kHz is 90-105dB. When the medium is stationary, the noise is constant and continuous; however, when the medium flows, turbulence is generated. This turbulence causes the ultrasonic emission waveform to become scattered, resulting in chaotic and shrill howls, which are louder and more piercing. Furthermore, the noise level fluctuates with changes in medium flow rate, viscosity, and temperature, reaching a maximum of 120 dB. Although ultrasonic noise is unavoidable during the operation of ultrasonic equipment, it does not affect the equipment's performance. Currently, noise from ultrasonic equipment is mostly reduced by installing soundproof enclosures.

[0003] Patent document CN216891009U discloses an ultrasonic cell disruptor for biochemical detection, comprising: an ultrasonic generator and a detection cylinder. The output end of the ultrasonic generator is connected to an amplitude transformer. The detection cylinder is cylindrical, with a detection area below the amplitude transformer within its inner cavity. Multiple clamping devices are arranged in a ring on the side wall of the detection cylinder. Each clamping device includes a screw, with a clamping element at the end corresponding to the detection area. The clamping element is made of elastic rubber. A support frame, U-shaped, is integrally connected to the side of the clamping piece corresponding to the screw. The clamping piece automatically deforms inward according to the arc of the contact surface, allowing it to adhere to the side wall of a small container for stable clamping and fixation. Simultaneously, the rubber material helps increase the friction of the contact surface, making it easy to control the force and preventing excessive force from breaking the glass container. This allows for stable fixation of containers of various sizes.

[0004] However, the aforementioned patent documents cannot effectively reduce the noise generated by the ultrasound equipment during operation, which makes it unsuitable for use in situations with high noise requirements and inconvenient for handling cell samples. Therefore, we propose a noise reduction system for medical testing equipment based on acoustic principles to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies that cannot effectively reduce the noise generated by ultrasound equipment during operation, thus making it unsuitable for use in situations with high noise requirements and inconvenient for handling cell samples to be tested. Therefore, this invention proposes a noise reduction system for medical testing equipment based on acoustic principles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A noise reduction system for medical testing equipment based on acoustic principles includes a housing. A sealing plate is connected to the outer side of the housing. An installation cavity is formed inside the housing. A connecting plate is fixedly installed on one side of the sealing plate. A translation mechanism is provided on the connecting plate. A support plate is connected to the connecting plate. A lifting mechanism is provided on the support plate. Two symmetrical second sliding grooves are formed on the top of the support plate. Positioning mechanisms are provided within the two second sliding grooves. A sound insulation layer is fixedly connected to the inner wall of the housing. The sound insulation layer is made of foamed rubber, foam ceramic, and foamed aluminum. The sound insulation layer is corrugated, and multiple sound-absorbing holes are formed on its outer side. A first sliding groove is formed on one side of the inner wall of the housing. A connecting block is slidably installed in the first sliding groove. A second empty groove is formed within the connecting block. An exhaust port is formed on one side of the inner wall of the installation cavity. A [missing information - likely a device or mechanism] is provided within the exhaust port. The heat dissipation mechanism includes an ultrasonic generator fixedly installed on the inner wall of the mounting cavity on the other side, with a transducer connected to the ultrasonic generator. An amplitude transformer is installed on the inner wall of the top of the housing, and the ultrasonic generator and amplitude transformer are connected by the same wire. A battery is fixedly installed on the inner wall of the bottom of the mounting cavity. The housing has a first slot and a third slot. A support is fixedly installed at the bottom of the housing. A guide hole is provided on the connecting plate, and a guide rod is slidably installed within the guide hole. A fixing plate is fixedly installed at one end of the guide rod, and the other end of the guide rod is fixedly connected to the bottom of the support plate. An observation window is provided on the sealing plate, and a soundproof glass plate is fixedly installed inside the observation window. A U-shaped convex plate is fixedly installed on one side of the sealing plate, and a U-shaped groove is provided on one side of the housing. The U-shaped groove and the U-shaped convex plate cooperate with each other. The lifting mechanism includes two electric push rods, both of which are fixedly installed at the bottom of the connecting plate. Two mounting holes are provided on the connecting plate. The output shafts of both electric push rods are fixedly connected to the bottom of the support plate. The positioning mechanism includes two square rods, each slidably installed in one of the two second sliding grooves. A sliding cylinder is fixedly installed on the top of each square rod, and a sliding column is slidably installed inside each of the two sliding cylinders. An arc-shaped clamp is fixedly connected to one end of each sliding column, and a first spring is fixedly connected to each of the two sliding columns. One end of each first spring is fixedly connected to the inner wall of one side of each of the two sliding cylinders. A third through hole is provided on the connecting block, communicating with the second slot. A rotating shaft is rotatably installed within the third through hole, and a rectangular hole is provided at one end of the rotating shaft. The outer side of the first rectangular rod is connected to... The inner wall of the rectangular hole is slidably connected. A fifth through hole is opened on one side of the support plate, which communicates with two second sliding grooves. Threaded holes are opened on both square rods, and the same double-ended screw is installed in the internal threads of the two threaded holes. A rectangular groove is opened at one end of the double-ended screw. The outer side of the second rectangular rod is slidably connected to the inner wall of the rectangular groove. A third sliding groove is opened at the top of the fixing plate and the bottom of the connecting plate. A first conductive block and a second conductive block are slidably installed in the two third sliding grooves, respectively. A second spring is fixedly connected to the outer side of both the first and second conductive blocks. One end of each of the two second springs is fixedly connected to the inner wall of the two third sliding grooves, respectively. The first conductive block, the battery, the cooling fan, and the second conductive block are connected in sequence. A fourth through hole is opened on one side of the inner wall of the second empty groove.A second rectangular rod is rotatably mounted inside the fourth through hole. A third bevel gear and a fourth bevel gear are fixedly mounted on the outer side of the rotating shaft and one end of the second rectangular rod, respectively. The third bevel gear and the fourth bevel gear mesh. A second through hole is opened on the bottom inner wall of the first slide groove, which communicates with the third empty groove. A first rectangular rod is rotatably mounted inside the second through hole. A first bevel gear and a second bevel gear are fixedly mounted on the outer side of the lead screw and one end of the first rectangular rod, respectively. The first bevel gear and the second bevel gear mesh. The heat dissipation mechanism includes a heat dissipation fan, and a fixed... The mounting cavity has two fixed rods fixedly installed inside. The outer side of the cooling fan is fixedly connected to one end of each of the two fixed rods. Air inlets are provided on both sides of the inner wall of the mounting cavity. Dustproof plates are fixedly installed inside both air inlets and exhaust outlets. The translation mechanism includes a drive motor, which is fixedly installed on one side of the inner wall of the first slot. A first through hole is provided on the other side of the inner wall of the first slot, communicating with a third slot. A threaded groove is provided on one side of the connecting plate, and a lead screw is threaded into the groove. One end of the lead screw is fixedly connected to the output shaft of the drive motor.

[0008] The beneficial effects of the acoustically based medical testing equipment noise reduction system described in this invention are as follows:

[0009] 1. When the drive motor is turned on, the drive motor drives the lead screw to rotate, the lead screw drives the connecting plate to move horizontally, and the connecting plate drives the sealing plate and the support plate to move horizontally, which makes it convenient to pick up and put down the test sample on the support plate. At the same time, by activating the two electric push rods, the support plate can be raised and lowered.

[0010] 2. This solution, through the wave structure on the surface of the sound insulation layer and the setting of sound-absorbing holes, can disrupt the reflection path of sound waves. The sound source and the wave-shaped sound insulation layer will not resonate, effectively reducing noise pollution when the ultrasonic equipment is working based on acoustic principles.

[0011] 3. In this design, when the lead screw rotates, the first bevel gear drives the second bevel gear to rotate, the first rectangular rod drives the rotating shaft to rotate, the third bevel gear drives the fourth bevel gear to rotate, and the bidirectional screw drives the two square rods to move closer to each other. Consequently, the two sliding cylinders drive the two sliding columns and the two arc-shaped clamps to move closer to each other, so that the two arc-shaped clamps can position the glass container.

[0012] This invention can effectively reduce the noise generated by ultrasound equipment during operation, thus ensuring that the equipment can be used in situations with high noise requirements. It is also convenient to pick up and put in the cell samples to be tested, with a simple structure and easy to use. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the noise reduction system for medical testing equipment based on acoustic principles proposed in this invention.

[0014] Figure 2 This is a schematic diagram of the main structure of the noise reduction system for medical testing equipment based on acoustic principles proposed in this invention.

[0015] Figure 3 This invention presents a noise reduction system for medical testing equipment based on acoustic principles. Figure 2 Enlarged structural diagram of part A in the middle;

[0016] Figure 4 This invention presents a noise reduction system for medical testing equipment based on acoustic principles. Figure 2 Enlarged structural diagram of section B;

[0017] Figure 5 This invention presents a noise reduction system for medical testing equipment based on acoustic principles. Figure 2 Enlarged structural diagram of section C;

[0018] Figure 6 This invention presents a noise reduction system for medical testing equipment based on acoustic principles. Figure 2 A magnified structural diagram of part D in the middle.

[0019] In the diagram: 1. Housing; 2. Sealing plate; 3. Soundproof glass plate; 4. Dustproof plate; 5. Support; 6. Battery; 7. Ultrasonic generator; 8. Transducer; 9. Wire; 10. Amplitude bar; 11. Sound insulation layer; 12. Fixing cover; 13. Fixing rod; 14. Cooling fan; 15. Mounting cavity; 16. Connecting plate; 17. Electric push rod; 18. Support plate; 19. U-shaped convex plate; 20. Drive motor; 21. First slot; 22. Lead screw; 23. Third slot; 24. 25. First groove; 26. Connecting block; 27. Second empty groove; 28. First bevel gear; 29. ​​Second bevel gear; 30. First rectangular rod; 31. Rotating shaft; 32. Third bevel gear; 33. Fourth bevel gear; 34. Second rectangular rod; 35. Double-acting screw; 36. Square rod; 37. Slide cylinder; 38. Slide column; 39. First spring; 40. Arc-shaped clamp; 41. Guide rod; 42. Fixing plate; 43. First conductive block; 44. Second conductive block; 45. Second spring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Example 1

[0022] Reference Figure 1 and Figure 2A noise reduction system for medical testing equipment based on acoustic principles includes a housing 1, a sealing plate 2 connected to the outer side of the housing 1, an installation cavity 15 inside the housing 1, a connecting plate 16 fixedly installed on one side of the sealing plate 2, a translation mechanism on the connecting plate 16, the translation mechanism including a drive motor 20, the drive motor 20 fixedly installed on the inner wall of one side of a first slot 21, a first through hole opened on the inner wall of the other side of the first slot 21, the first through hole communicating with a third slot 23, a threaded groove opened on one side of the connecting plate 16, a lead screw 22 threadedly installed in the threaded groove, one end of the lead screw 22 fixedly connected to the output shaft of the drive motor 20, a support plate 18 connected to the connecting plate 16, a lifting mechanism on the support plate 18, the lifting mechanism including two electric push rods 17. Two electric push rods 17 are fixedly installed at the bottom of the connecting plate 16. The connecting plate 16 has two mounting holes. The output shafts of both electric push rods 17 are fixedly connected to the bottom of the support plate 18. The top of the support plate 18 has two symmetrical second sliding grooves, each containing a positioning mechanism. A sound insulation layer 11 is fixedly connected to the inner wall of the housing 1. The sound insulation layer 11 is made of foamed rubber, foam ceramic, and foamed aluminum. The sound insulation layer 11 is corrugated, and multiple sound-absorbing holes are opened on its outer side. A first sliding groove 24 is opened on one side of the inner wall of the housing 1. A connecting block 25 is slidably installed in the first sliding groove 24. A second empty groove 26 is opened in the connecting block 25. An exhaust vent is opened on one side of the inner wall of the mounting cavity 15. A heat dissipation mechanism is installed in the exhaust vent. The heat dissipation mechanism includes… The mounting cavity 15 includes a cooling fan 14, a fixed cover 12 fixedly installed inside the exhaust vent, two fixed rods 13 fixedly installed inside the fixed cover 12, and the outer side of the cooling fan 14 fixedly connected to one end of the two fixed rods 13. Air inlets are provided on both inner walls of the mounting cavity 15, and dustproof plates 4 are fixedly installed inside both air inlets and exhaust vents. An ultrasonic generator 7 is fixedly installed on the other inner wall of the mounting cavity 15, and a transducer 8 is connected to the ultrasonic generator 7. An amplitude transformer 10 is installed on the top inner wall of the housing 1, and the ultrasonic generator 7 and the amplitude transformer 10 are connected by the same wire 9. A battery 6 is fixedly installed on the bottom inner wall of the mounting cavity 15. A first slot 21 and a third slot 23 are provided inside the housing 1. A support 5 is fixedly installed at the bottom of the housing 1. A connecting plate 16 is provided with... A guide hole is provided, and a guide rod 40 is slidably installed in the guide hole. A fixing plate 41 is fixedly installed at one end of the guide rod 40, and the other end of the guide rod 40 is fixedly connected to the bottom of the support plate 18. When the support plate 18 moves vertically, the support plate 18 drives the guide rod 40 to move vertically, and the guide rod 40 can drive the fixing plate 41 to move vertically. An observation window is provided on the sealing plate 2, and a soundproof glass plate 3 is fixedly installed in the observation window. A U-shaped protrusion 19 is fixedly installed on one side of the sealing plate 2. A U-shaped groove is provided on one side of the housing 1, and the U-shaped groove and the U-shaped protrusion 19 cooperate with each other. A fifth through hole is provided on one side of the support plate 18, and the fifth through hole communicates with two second sliding grooves. Threaded holes are provided on both square rods 35, and the same bidirectional screw 34 is threaded into the two threaded holes.One end of the bidirectional screw 34 has a rectangular groove, and the outer side of the second rectangular rod 33 is slidably connected to the inner wall of the rectangular groove. Both the ultrasonic generator 7 and the amplitude transformer 10 adopt the ultrasonic generator and amplitude transformer disclosed in patent document CN216891009U; their specific structures and connection methods have been disclosed and will not be repeated here.

[0023] Reference Figure 3 The bottom inner wall of the first groove 24 is provided with a second through hole, which communicates with the third empty groove 23. A first rectangular rod 29 is rotatably installed in the second through hole. A first bevel gear 27 and a second bevel gear 28 are respectively fixedly installed on the outer side of the lead screw 22 and one end of the first rectangular rod 29. The first bevel gear 27 and the second bevel gear 28 mesh with each other. When the lead screw 22 rotates, the first bevel gear 27 can drive the second bevel gear 28 to rotate, and the second bevel gear 28 can drive the first rectangular rod 29 to rotate.

[0024] Reference Figure 4 A third through hole is provided on the connecting block 25, which communicates with the second slot 26. A rotating shaft 30 is rotatably installed in the third through hole. A rectangular hole is provided at one end of the rotating shaft 30. The outer side of the first rectangular rod 29 is slidably connected to the inner wall of the rectangular hole. A fourth through hole is provided on one side of the inner wall of the second slot 26. A second rectangular rod 33 is rotatably installed in the fourth through hole. A third bevel gear 31 and a fourth bevel gear 32 are fixedly installed on the outer side of the rotating shaft 30 and one end of the second rectangular rod 33, respectively. The third bevel gear 31 and the fourth bevel gear 32 mesh. When the first rectangular rod 29 rotates, the first rectangular rod 29 can drive the rotating shaft 30 to rotate. The rotating shaft 30 drives the third bevel gear 31 to rotate. The third bevel gear 31 drives the fourth bevel gear 32 to rotate.

[0025] Reference Figure 5 The positioning mechanism includes two square rods 35, which are slidably installed in two second slide grooves. A slide cylinder 36 is fixedly installed on the top of each of the two square rods 35. A slide column 37 is slidably installed inside each of the two slide cylinders 36. An arc-shaped clamping plate 39 is fixedly connected to one end of each slide column 37. A first spring 38 is fixedly connected to each of the two slide columns 37. One end of each of the first springs 38 is fixedly connected to one side of the inner wall of each of the two slide cylinders 36. When the two arc-shaped clamping plates 39 clamp the container, the two first springs 38 can apply force to the two slide columns 37 respectively.

[0026] Reference Figure 6The top of the fixing plate 41 and the bottom of the connecting plate 16 are both provided with third sliding grooves. The first conductive block 42 and the second conductive block 43 are slidably installed in the two third sliding grooves respectively. The outer sides of the first conductive block 42 and the second conductive block 43 are fixedly connected with second springs 44. One end of the two second springs 44 is fixedly connected to the inner wall of the two third sliding grooves respectively. The first conductive block 42, the battery 6, the cooling fan 14 and the second conductive block 43 are connected in sequence. When the first conductive block 42 contacts the second conductive block 43, the cooling fan 14 can be automatically turned on.

[0027] In this embodiment, during use, by turning on the drive motor 20, the drive motor 20 drives the lead screw 22 to rotate, the lead screw 22 drives the connecting plate 16 to move horizontally, and the connecting plate 16 drives the sealing plate 2 and the support plate 18 to move horizontally to the right. When the support plate 18 moves to a certain position, the sample container can be placed on top of the support plate 18. Then, the drive motor 20 is turned on to reverse, the drive motor 20 drives the lead screw 22 to reverse, the lead screw 22 drives the connecting plate 16 to move horizontally to the left, and at the same time, the lead screw 22 drives the first bevel gear 27 to rotate. Bevel gear 27 drives second bevel gear 28 to rotate, second bevel gear 28 drives first rectangular rod 29 to rotate, first rectangular rod 29 drives rotating shaft 30 to rotate, rotating shaft 30 drives third bevel gear 31 to rotate, third bevel gear 31 drives fourth bevel gear 32 to rotate, fourth bevel gear 32 drives second rectangular rod 33 to rotate, second rectangular rod 33 drives double-ended screw 34 to rotate, double-ended screw 34 drives two square rods 35 to move closer together, two square rods 35 respectively drive two slide cylinders 36 to move closer together, and two slide cylinders 36 respectively drive... Two sliding columns 37 and two arc-shaped clamping plates 39 are brought close together, allowing the two arc-shaped clamping plates 39 to clamp and position the sample container. Then, two electric push rods 17 are activated, causing the support plate 18 to move vertically upward. The support plate 18 then moves the sample container vertically upward. When the amplitude transformer 10 is inside the sample container, the ultrasonic generator 7 is activated, allowing for sample detection. The wave structure on the surface of the sound insulation layer 11 and the setting of sound-absorbing holes disrupt the reflection path of sound waves, preventing resonance between the sound source and the wave-shaped sound insulation layer 11. This effectively reduces noise pollution during the operation of the ultrasonic generator 7 based on acoustic principles. Simultaneously, the support plate 18 moves the guide rod 40 vertically upward, which in turn moves the fixing plate 41 vertically upward. The fixing plate 41 then moves the first conductive block 42 vertically upward. When the first conductive block 42 contacts the second conductive block 43, the cooling fan 14 is automatically activated. The suction generated by the cooling fan 14 dissipates the heat generated by the ultrasonic generator 7, preventing overheating and damage to the equipment.

[0028] Example 2

[0029] The difference between this embodiment and embodiment one is that a temperature sensor and a controller are provided in the mounting cavity 15. The temperature sensor, controller and cooling fan 14 are connected in sequence. The temperature sensor can monitor the temperature of the equipment in the mounting cavity 15 in real time. When the temperature in the mounting cavity 15 reaches the set threshold, the temperature sensor sends a command to the controller, and the controller can control the cooling fan 14 to start and stop automatically.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A noise reduction system for medical testing equipment based on acoustic principles, comprising a housing (1), characterized in that, A sealing plate (2) is connected to the outer side of the housing (1), and an installation cavity (15) is opened inside the housing (1). A connecting plate (16) is fixedly installed on one side of the sealing plate (2). A translation mechanism is provided on the connecting plate (16), and a support plate (18) is connected to the connecting plate (16). A lifting mechanism is provided on the support plate (18). Two symmetrical second sliding grooves are opened on the top of the support plate (18), and a positioning mechanism is provided in the two second sliding grooves. A sound insulation layer (1) is fixedly connected to the inner wall of the housing (1). 1) The sound insulation layer (11) is made of foamed rubber, foamed ceramic and foamed aluminum. The sound insulation layer (11) is wavy and has multiple sound-absorbing holes on the outer side. The inner wall of one side of the housing (1) has a first groove (24). A connecting block (25) is slidably installed in the first groove (24). A second slot (26) is opened in the connecting block (25). An exhaust port is opened on one side of the inner wall of the mounting cavity (15). A heat dissipation mechanism is installed in the exhaust port. The other side of the mounting cavity (15) An ultrasonic generator (7) is fixedly installed on the inner wall, and a transducer (8) is connected to the ultrasonic generator (7). An amplitude transformer (10) is installed on the top inner wall of the housing (1). The ultrasonic generator (7) and the amplitude transformer (10) are connected to the same wire (9). A storage battery (6) is fixedly installed on the bottom inner wall of the mounting cavity (15). A first slot (21) and a third slot (23) are opened in the housing (1). A support (5) is fixedly installed at the bottom of the housing (1). A connecting plate (1) is also fixedly installed. 6) A guide hole is provided on the top, and a guide rod (40) is slidably installed in the guide hole. A fixing plate (41) is fixedly installed at one end of the guide rod (40), and the other end of the guide rod (40) is fixedly connected to the bottom of the support plate (18). An observation window is provided on the sealing plate (2), and a soundproof glass plate (3) is fixedly installed in the observation window. A spiral convex plate (19) is fixedly installed on one side of the sealing plate (2), and a spiral groove is provided on one side of the shell (1). The spiral groove and the spiral convex plate (19) cooperate with each other. The translation mechanism includes a drive motor (20), which is fixedly installed on one side of the inner wall of the first slot (21). A first through hole is opened on the other side of the inner wall of the first slot (21), which communicates with the third slot (23). A threaded groove is opened on one side of the connecting plate (16), and a lead screw (22) is threaded in the threaded groove. One end of the lead screw (22) is fixedly connected to the output shaft of the drive motor (20). The lifting mechanism includes two electric push rods (17), both of which are fixedly installed on the bottom of the connecting plate (16). The connecting plate (16) has two mounting holes, and the output shafts of the two electric push rods (17) are fixedly connected to the bottom of the support plate (18). The positioning mechanism includes two square rods (35), which are slidably installed in two second slide grooves respectively. A slide cylinder (36) is fixedly installed on the top of each of the two square rods (35). A slide column (37) is slidably installed inside each of the two slide cylinders (36). An arc-shaped clamp (39) is fixedly connected to one end of each of the two slide columns (37). A first spring (38) is fixedly connected to each of the two slide columns (37). One end of each of the two first springs (38) is fixedly connected to one side of the inner wall of each of the two slide cylinders (36).

2. The noise reduction system for medical testing equipment based on acoustic principles according to claim 1, characterized in that, The heat dissipation mechanism includes a heat dissipation fan (14), a fixed cover (12) is fixedly installed inside the exhaust port, two fixed rods (13) are fixedly installed inside the fixed cover (12), the outer side of the heat dissipation fan (14) is fixedly connected to one end of the two fixed rods (13), and air inlets are opened on both sides of the inner wall of the mounting cavity (15). Dustproof plates (4) are fixedly installed inside the two air inlets and the exhaust port.

3. The noise reduction system for medical testing equipment based on acoustic principles according to claim 2, characterized in that, The bottom inner wall of the first groove (24) is provided with a second through hole, which is connected to the third empty groove (23). A first rectangular rod (29) is rotatably installed in the second through hole. A first bevel gear (27) and a second bevel gear (28) are fixedly installed on the outer side of the lead screw (22) and one end of the first rectangular rod (29), respectively. The first bevel gear (27) and the second bevel gear (28) mesh with each other.

4. The noise reduction system for medical testing equipment based on acoustic principles according to claim 3, characterized in that, The connecting block (25) has a third through hole, which is connected to the second slot (26). A rotating shaft (30) is rotatably installed in the third through hole. A rectangular hole is opened at one end of the rotating shaft (30), and the outer side of the first rectangular rod (29) is slidably connected to the inner wall of the rectangular hole.

5. The noise reduction system for medical testing equipment based on acoustic principles according to claim 4, characterized in that, A fourth through hole is provided on one side of the inner wall of the second slot (26). A second rectangular rod (33) is rotatably installed in the fourth through hole. A third bevel gear (31) and a fourth bevel gear (32) are fixedly installed on the outer side of the shaft (30) and one end of the second rectangular rod (33), respectively. The third bevel gear (31) and the fourth bevel gear (32) mesh.

6. The noise reduction system for medical testing equipment based on acoustic principles according to claim 5, characterized in that, The support plate (18) has a fifth through hole on one side, which is connected to two second sliding grooves. Both square rods (35) have threaded holes, and the same bidirectional screw (34) is installed in the threaded holes. One end of the bidirectional screw (34) has a rectangular groove, and the outer side of the second rectangular rod (33) is slidably connected to the inner wall of the rectangular groove.

7. The noise reduction system for medical testing equipment based on acoustic principles according to claim 6, characterized in that, The top of the fixed plate (41) and the bottom of the connecting plate (16) are both provided with third sliding grooves. The first conductive block (42) and the second conductive block (43) are slidably installed in the two third sliding grooves respectively. The outer sides of the first conductive block (42) and the second conductive block (43) are fixedly connected with second springs (44). One end of the two second springs (44) is fixedly connected to the inner wall of the two third sliding grooves respectively. The first conductive block (42) is connected to the battery (6), the cooling fan (14) and the second conductive block (43) in sequence.

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