Mounting structure for digital differential pressure sensor

Abstract

The application discloses a mounting structure of a digital differential pressure sensor and relates to the field of digital differential pressure sensors, which comprises a mounting seat and a digital differential pressure sensor body, a clamping mechanism for clamping the digital differential pressure sensor body in the horizontal direction is arranged on one side of the surface of the mounting seat, and a downward pressing mechanism for pressing the digital differential pressure sensor body is arranged on the surface of the mounting seat. The application clamps and positions the digital differential pressure sensor body in the horizontal direction through the clamping mechanism, positions the digital differential pressure sensor body in the vertical direction through the downward pressing mechanism, and combines the buffering force provided by the spring and the top plate in the mounting seat to form a three-dimensional fixing structure of "horizontal clamping + vertical limiting", so that the displacement and shaking of the digital differential pressure sensor body in the vibration environment can be effectively prevented, the fixing stability is greatly improved, and the mounting effect of the digital differential pressure sensor body is obviously improved.

Description

Technical Field

[0001] This application relates to the field of digital differential pressure sensors, and in particular to the mounting structure of digital differential pressure sensors. Background Technology

[0002] Due to significant air quality differences between the eastern and western parts of the country and between the northern and southern parts, using the same standards can easily lead to unnecessary waste of consumables. By installing differential pressure sensors at the primary, medium, and sub-high efficiency locations of the air purification unit, the intelligent operation and maintenance system can achieve 24-hour uninterrupted monitoring of filter consumables. Combining multi-dimensional data such as installation time, installation conditions, and differential pressure trends, the system performs algorithmic analysis to digitally reflect the filter's lifespan. This information is displayed in real time on the hospital's monitoring screen and mobile app. When the consumable's lifespan falls below the critical value, the app notifies maintenance engineers to perform timely maintenance, significantly optimizing the use and consumption of consumables and reducing the hospital's operation and maintenance costs.

[0003] The existing publication number CN218156634U discloses an installation structure for a differential pressure monitoring sensor, but it still has the following shortcomings in practical use:

[0004] This structure clamps the digital differential pressure sensor only from both sides using arc-shaped clamps, resulting in a lack of limiting at the top and bottom of the sensor. Consequently, under the influence of vibration, the digital differential pressure sensor is prone to displacement or shaking, leading to inaccurate measurement data and affecting normal monitoring and production operations. Utility Model Content

[0005] To address the issue of displacement or swaying that digital differential pressure sensors are prone to in vibration environments, this application provides an installation structure for digital differential pressure sensors.

[0006] The mounting structure of the digital differential pressure sensor provided in this application adopts the following technical solution:

[0007] The mounting structure of the digital differential pressure sensor includes a mounting base and a digital differential pressure sensor body. One side of the surface of the mounting base is provided with a clamping mechanism for horizontally clamping the digital differential pressure sensor body, and another side of the surface of the mounting base is provided with a pressing mechanism for pressing down the digital differential pressure sensor body.

[0008] The clamping mechanism includes clamping plates symmetrically slidably disposed on one side of the mounting base surface. The clamping plates have clamping holes on the side of their surface near the digital differential pressure sensor body to increase the friction between the surface of the clamping plates and the surface of the digital differential pressure sensor body.

[0009] The pressing mechanism includes a pressure plate disposed on the side of the clamp plate away from the mounting base surface, and a buffer pad for adapting to the irregular surface of the digital differential pressure sensor body is fixed on the side of the pressure plate near the mounting base surface.

[0010] By adopting the above technical solution, the digital differential pressure sensor body is horizontally clamped by the clamping mechanism to position the digital differential pressure sensor body horizontally, and the digital differential pressure sensor body is vertically positioned by pressing down on the pressure plate, thereby achieving three-dimensional positioning of the digital differential pressure sensor body.

[0011] Preferably, the pressing mechanism further includes a pressing seat fixed on the side of the clamping plate away from the mounting base surface. A rotating block is provided on the side of the pressing seat away from the clamping plate surface. A transmission shaft is fixedly mounted on the end of the rotating block near the pressing seat and rotatably disposed on the side of the pressing seat away from the clamping plate surface. A screw is fixedly mounted on the end of the transmission shaft away from the rotating block and rotatably disposed on the side of the clamping plate away from the mounting base surface. A lifting block is threadedly connected to the surface of the screw on the side of the pressure plate near the pressing seat surface. The lifting block is slidably disposed inside the pressing seat.

[0012] By adopting the above technical solution, the rotation of the rotating block provides power to the transmission shaft, which in turn drives the transmission shaft to rotate. The transmission shaft then drives the screw to rotate, which in turn drives the lifting block to move vertically. The lifting block then drives the pressure plate to move vertically, allowing the pressure plate to position the digital differential pressure sensor body vertically. This allows the downward pressure distance of the lifting block to be adjusted according to the thickness of the digital differential pressure sensor body.

[0013] Preferably, the clamping mechanism further includes a drive box disposed on one side of the mounting base surface, a turntable disposed on one side of the drive box surface, a rotating shaft rotatably disposed on the side of the turntable near the drive box surface, a bidirectional lead screw rotatably disposed inside the drive box at the end of the rotating shaft away from the turntable, and a drive seat disposed on the side of the clamping plate near the drive box surface.

[0014] By adopting the above technical solution, the rotation of the turntable provides power to the rotating shaft, causing the turntable to drive the rotating shaft to rotate, thereby causing the rotating shaft to drive the bidirectional lead screw to rotate.

[0015] Preferably, the surface of the bidirectional lead screw is symmetrically threaded with a transmission block that is slidably disposed inside the drive box. A drive rod that is slidably disposed on one side of the surface of the drive box near the drive seat is fixed thereon. The end of the drive rod away from the drive box is inserted into the surface of the drive seat away from the clamping plate.

[0016] By adopting the above technical solution, the rotation of the bidirectional lead screw provides power to the transmission block, so that when the bidirectional lead screw rotates, it drives the screw transmission block to move in opposite directions in the horizontal direction. The two transmission blocks drive the two drive rods to move in opposite directions in the horizontal direction. The two drive rods drive the two drive seats to move in opposite directions in the horizontal direction. The two drive seats drive the two clamping plates to move in opposite directions in the horizontal direction, so that the two clamping plates position the digital differential pressure sensor body in the horizontal direction.

[0017] Preferably, a spring is fixed inside the mounting base, and a top plate is fixedly disposed on the side of the mounting base near the clamping plate at one end of the spring. The end of the top plate away from the spring is always in contact with the surface of the digital differential pressure sensor body.

[0018] By adopting the above technical solution, while the pressure plate presses down on the digital differential pressure sensor body, the spring and the top plate provide an upward buffering force for the digital differential pressure sensor body, so that the spring and the top plate can adapt to digital differential pressure sensor bodies of different thicknesses.

[0019] Preferably, the surface of the top plate away from the spring is circular.

[0020] By adopting the above technical solution, setting the end of the top plate away from the spring to be circular is beneficial to ensure that the digital differential pressure sensor body and the top plate make uniform contact.

[0021] Preferably, both the clamping plate and the pressure plate are semi-circular rings, and the inner surface of the clamping plate and the outer surface of the pressure plate are on the same vertical line.

[0022] By adopting the above technical solution, the clamping plate and pressure plate are set as semi-circular rings, so that the clamping plate and pressure plate fit the shape of the digital differential pressure sensor body better, thereby better positioning the digital differential pressure sensor body.

[0023] Preferably, the cushioning pad is made of medical-grade silicone.

[0024] By adopting the above technical solution, the silicone buffer pad can adapt to the irregular surface of the digital differential pressure sensor body.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The clamping mechanism clamps and positions the digital differential pressure sensor body in the horizontal direction, while the pressing mechanism presses it down in the vertical direction. Combined with the buffering force provided by the spring inside the mounting base and the top plate, a three-dimensional fixing structure of "horizontal clamping + vertical limiting" is formed. This effectively prevents the digital differential pressure sensor body from shifting and shaking in a vibration environment, greatly improving the fixing stability and significantly enhancing the installation effect of the digital differential pressure sensor body.

[0027] 2. The installation structure, with its springs and top plate, automatically adjusts to the thickness of the digital differential pressure sensor body, providing upward cushioning force to accommodate sensors of varying thicknesses. Furthermore, the clamping and pressure plates feature a semi-circular design, and the cushioning pad is made of medical-grade silicone, allowing for a better fit to the shape of the digital differential pressure sensor body and adapting to its irregular surface. This further enhances the compatibility of the installation structure with digital differential pressure sensors of different specifications. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this application;

[0029] Figure 2 This is a top-view structural diagram of the fully enclosed cabin of this application;

[0030] Figure 3 This is a three-dimensional structural diagram of the fully enclosed cabin of this application;

[0031] Figure 4 This is a partial three-dimensional structural schematic diagram of this application;

[0032] Figure 5 For this application Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 For this application Figure 4 Enlarged view of point B in the middle;

[0034] Figure 7 This is a three-dimensional structural diagram of the clamping mechanism and the pressing mechanism of this application;

[0035] Figure 8 This is a cross-sectional structural diagram of the mounting base in this application.

[0036] Attached reference numerals: 1. Fully enclosed hull; 11. Bellows; 12. Hatch cover;

[0037] 2. Mounting base; 21. Digital differential pressure sensor body; 22. Slide groove; 23. Limiting space; 24. Installation space;

[0038] 3. Clamping mechanism; 31. Drive box; 311. Limiting plate; 312. Guide groove; 313. Drive space; 314. Limiting groove; 32. Turntable; 33. Rotating shaft; 34. Two-way lead screw; 35. Transmission block; 351. Guide block; 36. Drive rod; 361. Limiting block; 37. Clamping plate; 371. Drive seat; 372. Drive groove; 373. Slider; 374. Clamping hole;

[0039] 4. Pressing mechanism; 41. Pressing seat; 411. Guide groove; 42. Rotating block; 421. Drive shaft; 43. Screw; 44. Lifting block; 441. Guide block; 45. Pressure plate; 451. Buffer pad;

[0040] 5. Spring; 51. Top plate. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0042] This application discloses an installation structure for a digital differential pressure sensor.

[0043] Reference Figure 1 The mounting structure of the digital differential pressure sensor includes a fully enclosed chamber 1 and a digital differential pressure sensor body 21. The wall thickness of the fully enclosed chamber 1 is 1-3mm. A cover 12 is hinged to the surface of the fully enclosed chamber 1. The inclination angle between the surface of the fully enclosed chamber 1 away from the cover 12 and the surface of the fully enclosed chamber 1 near the cover 12 is 5° to prevent water accumulation during disinfection of the fully enclosed chamber 1. The fully enclosed chamber 1 and the cover 12 are sealed by a high-temperature resistant fluororubber sealing strip with a Shore A hardness of 60A and a compression of ≥30%. The fully enclosed chamber 1 and the cover 12 are locked together by stainless steel clamps with torque indicators to ensure an airtightness and a leakage rate of ≤10%. -7 Pa·m 3 / s, a handle is fixed on the surface of the hatch cover 12, a wiring port is opened on the surface of the fully enclosed cabin 1, and a corrugated tube 11 for threading wire is installed on the surface of the wiring port through a granite head, and a mounting base 2 is fixed inside the fully enclosed cabin 1.

[0044] A 5mm diameter heat dissipation hole is opened on one side of the fully enclosed cabin, with a built-in dust filter and a micro fan with a speed of 2000rpm to maintain the internal temperature ≤40℃.

[0045] The fully enclosed chamber 1 should be installed at a distance of ≥1.5m from the operating table away from the surgical area to avoid affecting the surgical operation. It should be close to monitoring targets such as laminar flow vents and anesthesia machine pipelines, and the pressure tube length should be shortened to ≤1m to reduce measurement delay. At the same time, during the installation process, it should avoid being directly under the shadowless lamp, in the movement path of the instrument cabinet, and at a distance of ≥2m from strong electromagnetic sources such as high-frequency electrosurgical units and MRI equipment.

[0046] Installation steps for fully enclosed cabin 1:

[0047] The mounting surface of the fully enclosed chamber 1 was calibrated using a level, and the positions of the four fixing holes were marked. The drilling depth was 55mm, and the expansion bolts were embedded 50mm. The holes were disinfected with ethanol, and stainless steel expansion bolts were installed. The torque cap was tightened to 12N·m in a diagonal sequence using a torque wrench to ensure that the gap between the fully enclosed chamber 1 and the wall is ≤0.1mm to prevent dust accumulation.

[0048] The fully enclosed cabin 1 is lined with a 0.1mm thick copper foil shielding layer, with a grounding resistance ≤1Ω, effectively isolating strong electromagnetic sources such as high-frequency electrosurgical units (power ≥300W) and MRI equipment (magnetic field strength ≥1.5T) in the operating room (distance ≥2m).

[0049] The digital differential pressure sensor body 21 is connected to the inside of the operating room and the external environment through pressure tubes. It uses the pressure difference on both sides of the diaphragm to generate a micro-displacement, which is converted into an electrical signal and output as a digital value. The measured pressure is directly applied to the diaphragm of the digital differential pressure sensor body 21, causing the diaphragm to generate a micro-displacement proportional to the air pressure. This causes a change in the capacitance value of the digital differential pressure sensor body 21. The electronic circuit detects this change and converts it into a standard measurement signal corresponding to the pressure.

[0050] When the digital differential pressure sensor body 21 is needed, open the cover 12 and place the digital differential pressure sensor body 21 inside the fully enclosed chamber 1 for fixation. After use, close the cover 12 to provide a fully enclosed protective space for the digital differential pressure sensor body 21.

[0051] Reference Figures 2-7 A clamping mechanism 3 for horizontally clamping the digital differential pressure sensor body 21 is provided on one side of the surface of the mounting base 2. The clamping mechanism 3 includes a drive box 31 located inside the fully enclosed chamber 1 and on one side of the surface of the mounting base 2. A turntable 32 is provided on one side of the surface of the drive box 31. A rotating shaft 33 is fixed on the side of the turntable 32 near the surface of the drive box 31. The surface of the rotating shaft 33 is rotatably connected to the middle of the surface of the drive box 31 near the turntable 32 via a bearing. The bearing includes an inner ring, an outer ring, rolling elements, and a cage. The outer ring of the bearing on the surface of the rotating shaft 33 is fixed to the drive box. A bidirectional lead screw 34 is fixedly installed at the middle of the surface of the drive box 31 near the turntable 32. The end of the rotating shaft 33 away from the turntable 32 is rotatably connected to the side wall of the drive box 31 via a bearing. The outer ring of the bearing at the end of the bidirectional lead screw 34 away from the rotating shaft 33 is fixedly installed on the side wall of the drive box 31. A limiting plate 311 is fixedly installed in the middle of the bottom wall of the drive box 31. The middle of the surface of the bidirectional lead screw 34 is rotatably connected to the middle of the surface of the limiting plate 311 via a bearing. The outer ring of the bearing in the middle of the surface of the bidirectional lead screw 34 is fixedly installed in the middle of the surface of the limiting plate 311.

[0052] The rotation of turntable 32 provides power to rotating shaft 33, causing turntable 32 to drive rotating shaft 33 to rotate, which in turn drives bidirectional lead screw 34 to rotate.

[0053] Reference Figures 2-8A drive seat 371 is fixedly mounted on the side of the clamping plate 37 near the drive box 31. A transmission block 35 is symmetrically threaded onto the surface of the bidirectional lead screw 34. A guide block 351 is fixedly mounted in the middle of one side of the transmission block 35. The end of the guide block 351 away from the transmission block 35 is T-shaped. The inner wall of the drive box 31 is symmetrically provided with guide grooves 312 that are adapted to the transmission block 35. The surface of the end of the guide block 351 away from the transmission block 35 abuts against the inner wall of the guide groove 312, so that the guide block 351 can slide stably inside the guide groove 312. A drive rod 36 is fixedly provided on the middle of one side of the surface of block 351. A drive space 313 is provided on one side of the surface of drive box 31. The surface of drive rod 36 abuts against the inner wall of drive space 313, so that drive rod 36 can slide stably inside drive space 313. Limiting blocks 361 are fixedly provided on both sides of the surface of drive rod 36. Limiting grooves 314 adapted to limiting blocks 361 are provided on both sides of the inner wall of drive space 313. The surface of limiting block 361 abuts against the inner wall of limiting groove 314, so that limiting block 361 can slide stably inside limiting groove 314.

[0054] It should be noted that when the bidirectional lead screw 34 rotates clockwise, the two transmission blocks 35 are in a state of being far apart from each other, and when the bidirectional lead screw 34 rotates counterclockwise, the two transmission blocks 35 are in a state of being close to each other.

[0055] The rotation of the bidirectional lead screw 34 provides power to the two transmission blocks 35, causing the bidirectional lead screw 34 to drive the two transmission blocks 35 to move in opposite directions in the horizontal direction, and causing the two transmission blocks 35 to drive the two drive rods 36 to move in opposite directions in the horizontal direction.

[0056] Reference Figures 2-8 One side of the mounting base 2 is symmetrically abutted by clamping plates 37. A drive seat 371 is fixed on the side of the clamping plate 37 near the drive rod 36. A drive groove 372 is opened on the side of the drive seat 371 away from the clamping plate 37. The end surface of the drive rod 36 away from the transmission block 35 abuts against the inner wall of the drive groove 372, so that when the two drive rods 36 move in opposite directions in the horizontal direction, they drive the two clamping plates 37 to move in opposite directions in the horizontal direction. A slider 373 is fixed in the middle of the side of the clamping plate 37 near the mounting base 2. The slider 373 is cross-shaped. A groove 22 that matches the slider 373 is opened on the side of the mounting base 2 near the clamping plate 37. The surface of the slider 373 abuts against the inner wall of the groove 22, so that the slider 373 can slide stably inside the groove 22. A clamping hole 374 is opened on the side of the clamping plate 37 near the digital differential pressure sensor body 21 to increase the friction between the surface of the clamping plate 37 and the surface of the digital differential pressure sensor body 21. The clamping hole 374 is a polygonal hole.

[0057] It should be noted that a limiting retaining ring is added to the end of the drive rod 36 away from the drive box 31, and a retaining groove is opened at the bottom of the drive groove 372 of the drive seat 371. After insertion, the retaining ring engages and limits the position, which can further increase the structural stability (not shown in the figure).

[0058] The two drive rods 36 provide power to the two drive seats 371, causing the two drive rods 36 to drive the two drive seats 371 to move in opposite directions in the horizontal direction, and causing the two drive seats 371 to drive the two clamping plates 37 to move in opposite directions in the horizontal direction, thereby positioning the digital differential pressure sensor body 21 in the horizontal direction, and positioning the digital differential pressure sensor body 21 on the side of the mounting base 2 near the clamping plate 37.

[0059] Reference Figures 2-7 A pressing mechanism 4 for pressing down the digital differential pressure sensor body 21 is provided on one side of the surface of the mounting base 2. The pressing mechanism 4 includes a pressing seat 41 fixed on the side of the clamping plate 37 away from the surface of the mounting base 2. A rotating block 42 is provided on the side of the pressing seat 41 away from the clamping plate 37. A drive shaft 421 is fixed at one end of the rotating block 42 near the pressing seat 41. The surface of the drive shaft 421 is rotatably connected to the middle of the side of the pressing seat 41 away from the clamping plate 37 through a bearing. The outer ring of the bearing on the surface of the drive shaft 421 is fixed to the middle of the side of the pressing seat 41 away from the clamping plate 37. A screw 43 is fixed at one end of the drive shaft 421 away from the rotating block 42. The surface of the screw 43 away from the rotating block 42 is rotatably connected to the side of the clamping plate 37 away from the mounting base 2 through a bearing. The outer ring of the bearing on the surface of the screw 43 away from the rotating block 42 is fixed to the side of the clamping plate 37 away from the mounting base 2.

[0060] It should be noted that when the lifting block 44 moves to the upper end of the screw 43, the pressure plate 45 is in the highest position; when the lifting block 44 moves to the lower end of the screw 43, the pressure plate 45 is in the lowest position; when the screw 43 rotates counterclockwise, the lifting block 44 is in the rising state; when the screw 43 rotates clockwise, the lifting block 44 is in the falling state.

[0061] The rotation of the rotating block 42 provides power to the transmission shaft 421, causing the rotating block 42 to drive the transmission shaft 421 to rotate, which in turn drives the screw 43 to rotate.

[0062] Reference Figures 2-7The screw 43 is threadedly connected to a lifting block 44. Guide blocks 441 are fixed on both sides of the surface of the lifting block 44. The side of the guide block 441 away from the clamping plate 37 is cross-shaped. Guide grooves 411 that are adapted to the guide blocks 441 are opened on both sides of the inner surface of the lower pressure seat 41. The surface of the guide block 441 abuts against the inner wall of the guide groove 411, so that the guide block 441 can slide stably inside the guide groove 411. A pressure plate 45 is fixed in the middle of the side of the lifting block 44 near the digital differential pressure sensor body 21. A buffer pad 451 for adapting to the irregular surface of the digital differential pressure sensor body 21 is bonded to the side of the pressure plate 45 near the mounting base 2 by medical-grade silicone adhesive. Both the clamping plate 37 and the pressure plate 45 are semi-circular rings. The inner surface of the clamping plate 37 and the outer surface of the pressure plate 45 are on the same vertical line.

[0063] The rotation of screw 43 provides power to lifting block 44, causing screw 43 to drive lifting block 44 to move vertically. Lifting block 44 drives pressure plate 45 to move vertically, causing pressure plate 45 to press down on digital differential pressure sensor body 21 and vertically position digital differential pressure sensor body 21.

[0064] Reference Figure 8 A limiting space 23 is provided on the side of the mounting base 2 near the clamping plate 37. An installation space 24 is provided in the middle of the bottom wall of the limiting space 23. A spring 5 is fixed in the middle of the bottom wall of the installation space 24. A top plate 51 is fixed at the end of the spring 5 near the clamping plate 37. The surface of the top plate 51 abuts against the inner wall of the limiting space 23, so that the top plate 51 can slide stably inside the limiting space 23. The end of the top plate 51 away from the spring 5 is always in contact with the surface of the digital differential pressure sensor body 21. The surface of the end of the top plate 51 away from the spring 5 is circular.

[0065] It should be noted that the calculation formula for spring 5 is: F = kx, where F is the external force on spring 5, in N, k is the spring constant of spring 5, in N / m, and x is the deformation of spring 5, in m. The elastic force of spring 5 is then calculated so that it can be used in this application.

[0066] The spring 5 and the top plate 51 provide an upward buffering force for the digital differential pressure sensor body 21, enabling the top plate 51 to adapt to digital differential pressure sensor bodies 21 of different thicknesses and enhancing compatibility.

[0067] Disinfection steps:

[0068] Prepare a 500 mg / L chlorine-containing disinfectant solution. Soak a lint-free wiping cloth in the solution and wring it until it is semi-dry.

[0069] Wipe the surface of the fully enclosed cabin 1, the mounting base 2, and the exposed parts of each mechanism evenly, paying special attention to wiping areas prone to dust accumulation such as gaps and interfaces.

[0070] After wiping, keep the surface moist for 3-5 minutes to ensure disinfection effectiveness, then wipe with sterile water to remove any residual disinfectant.

[0071] Disinfection time: Performed immediately after each surgery.

[0072] It should be added that: the drive box 31 is made of ABS engineering plastic, the turntable 32 and the rotating shaft 33 are made of titanium alloy, the lower pressure seat 41 and the rotating block 42 are made of polyoxymethylene, the buffer pad 451 is made of medical grade silicone, and all other structures except the digital differential pressure sensor body 21 and the above are made of medical grade stainless steel.

[0073] The self-locking between the two-way lead screw 34 and the transmission block 35, as well as the self-locking between the screw 43 and the lifting block 44, depends on the relationship between the helix angle λ and the friction angle φ. The friction angle φ = arctan(f), where f is the friction coefficient of the threaded pair (dry friction between steel and steel threads). When f ≈ 0.1-0.15, the corresponding φ ≈ 5.7°-8.5°.

[0074] When the pitch is 1.5mm and the mean diameter is 10mm, λ=arctan(1.5 / 10π)=2.7°<φ=5.7°, the self-locking effectiveness is proven.

[0075] When λ≤φ, the bidirectional lead screw 34 and the transmission block 35, as well as the screw 43 and the lifting block 44, have self-locking properties, meaning that axial force cannot drive the threaded pair to rotate automatically.

[0076] Before use, the distance between the two clamping plates 37 is greater than the diameter of the top plate 51, so that the distance between the inner surfaces of the two pressure plates 45 is greater than the diameter of the top plate 51, and the lifting block 44 is located at the upper end of the screw 43, and the pressure plate 45 is at its maximum height.

[0077] The implementation principle of the installation structure of the digital differential pressure sensor in this application embodiment is as follows: When using this application, the user first pulls the handle on one side of the surface of the cover 12 upwards to open the cover 12, so that the cover 12 is at a 90-degree angle to the fully enclosed chamber 1. Then, the digital differential pressure sensor body 21 is placed in the center of the top plate 51, and the turntable 32 is manually rotated counterclockwise. The turntable 32 drives the rotating shaft 33 to rotate counterclockwise, and the rotating shaft 33 drives the bidirectional lead screw 34 to rotate counterclockwise. The bidirectional lead screw 34 drives the two transmission blocks 35 to move closer to each other, so that the two transmission blocks 35 drive the two drive rods 36 to move closer to each other. The two drive rods 36 drive the two drive seats 371 to move closer together, and the two drive seats 371 drive the two clamping plates 37 to move closer together. The inner surfaces of the two clamping plates 37 gradually move closer to the surface of the digital differential pressure sensor body 21. When the inner surfaces of the clamping plates 37 abut against the surface of the digital differential pressure sensor body 21, the two clamping plates 37 position the digital differential pressure sensor body 21 in the horizontal direction, and provide friction between the surface of the clamping plates 37 and the surface of the digital differential pressure sensor body 21 through the clamping holes 374, thereby improving the fixing effect of the clamping plates 37 on the digital differential pressure sensor body 21.

[0078] When the two clamping plates 37 approach each other, they drive the two pressing mechanisms 4 to approach each other, so that the pressure plate 45 is above the digital differential pressure sensor body 21. The rotating block 42 is manually rotated counterclockwise, which drives the transmission shaft 421 to rotate counterclockwise. The transmission shaft 421 drives the screw 43 to rotate counterclockwise, and the screw 43 drives the lifting block 44 to move downward. The lifting block 44 drives the pressure plate 45 to move downward, thereby pressing down on the digital differential pressure sensor body 21 and vertically positioning the digital differential pressure sensor body 21.

[0079] When the pressure plate 45 presses down on the digital differential pressure sensor body 21, the digital differential pressure sensor body 21 is subjected to downward pressure. The digital differential pressure sensor body 21 presses against the top plate 51, causing the top plate 51 to slide downward within the limiting space 23. The top plate 51 provides an upward buffering force to the digital differential pressure sensor body 21 through the spring 5, maintaining the stability of the downward movement of the top plate 51.

[0080] By cooperating with the horizontally moving clamping plate 37, the vertically moving pressure plate 45, and the top plate 51 and spring 5, a three-dimensional fixing structure of "horizontal clamping + vertical limiting" is formed, thereby fixing the digital differential pressure sensor body 21 inside the fully enclosed chamber 1. The fully enclosed chamber 1 provides a fully enclosed protective space for the digital differential pressure sensor body 21, effectively preventing displacement and shaking of the digital differential pressure sensor body 21 under vibration, improving fixing stability, and enhancing the installation effect of the digital differential pressure sensor body 21.

[0081] When it is necessary to disassemble the remaining structures inside the clamping mechanism 3, except for the clamping plate 37, drive seat 371, drive groove 372, slider 373, and clamping hole 374, the user only needs to push the drive box 31 away from the mounting seat 2, so that the drive box 31 is away from the mounting seat 2. The turntable 32 drives the drive rod 36 away from the mounting seat 2, so that the end of the drive rod 36 away from the drive box 31 is disengaged from the drive groove 372, so that the drive rod 36 no longer drives the drive seat 371 to move, thereby disassembling the drive rod 36, which makes it convenient for the user to maintain the disassembled structure.

[0082] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. The mounting structure of a digital differential pressure sensor, characterized in that: It includes a mounting base (2) and a digital differential pressure sensor body (21). One side of the surface of the mounting base (2) is provided with a clamping mechanism (3) for clamping the digital differential pressure sensor body (21) in the horizontal direction, and one side of the surface of the mounting base (2) is provided with a pressing mechanism (4) for pressing down the digital differential pressure sensor body (21). The clamping mechanism (3) includes a clamping plate (37) symmetrically slidably disposed on one side of the surface of the mounting base (2). The clamping plate (37) has a clamping hole (374) on the side of the surface of the digital differential pressure sensor body (21) to increase the friction between the surface of the clamping plate (37) and the surface of the digital differential pressure sensor body (21). The pressing mechanism (4) includes a pressure plate (45) disposed on the side of the clamping plate (37) away from the mounting base (2), and a buffer pad (451) is fixed on the side of the pressure plate (45) near the mounting base (2) to adapt to the irregular surface of the digital differential pressure sensor body (21).

2. The mounting structure of the digital differential pressure sensor according to claim 1, characterized in that: The pressing mechanism (4) further includes a pressing seat (41) fixed on the side of the clamping plate (37) away from the mounting base (2). A rotating block (42) is provided on the side of the pressing seat (41) away from the clamping plate (37). A transmission shaft (421) is fixedly provided on the side of the pressing seat (41) away from the clamping plate (37) near the end of the rotating block (42). A screw (43) is fixedly provided on the side of the clamping plate (37) away from the mounting base (2) near the end of the transmission shaft (421). A lifting block (44) is fixedly provided on the side of the clamping plate (37) away from the mounting base (2) near the end of the rotating block (42). A lifting block (44) is threadedly connected to the surface of the screw (43) on the side of the pressure plate (45) near the pressing seat (41). The lifting block (44) is slidably disposed inside the pressing seat (41).

3. The mounting structure of the digital differential pressure sensor according to claim 1, characterized in that: The clamping mechanism (3) further includes a drive box (31) disposed on one side of the surface of the mounting base (2). A turntable (32) is disposed on one side of the surface of the drive box (31). A rotating shaft (33) is fixedly disposed on the side of the drive box (31) near the surface of the drive box (31). A bidirectional lead screw (34) is fixedly disposed inside the drive box (31) at the end of the rotating shaft (33) away from the turntable (32). A drive seat (371) is fixedly disposed on the side of the clamping plate (37) near the surface of the drive box (31).

4. The mounting structure of the digital differential pressure sensor according to claim 3, characterized in that: The surface of the bidirectional lead screw (34) is symmetrically threaded with a transmission block (35) that is slidably disposed inside the drive box (31). A drive rod (36) is fixedly disposed on one side of the surface of the transmission block (35) and slidably disposed on the side of the drive box (31) near the drive seat (371). The end of the drive rod (36) away from the drive box (31) is inserted into the side of the drive seat (371) away from the clamping plate (37).

5. The mounting structure of the digital differential pressure sensor according to claim 1, characterized in that: A spring (5) is fixed inside the mounting base (2). A top plate (51) is fixed at one end of the spring (5) near the clamping plate (37) and is slidably disposed on the side of the mounting base (2) near the surface of the clamping plate (37). The end of the top plate (51) away from the spring (5) is always in contact with the surface of the digital differential pressure sensor body (21).

6. The mounting structure of the digital differential pressure sensor according to claim 5, characterized in that: The surface of the top plate (51) away from the spring (5) is circular.

7. The mounting structure of the digital differential pressure sensor according to claim 1, characterized in that: Both the clamping plate (37) and the pressure plate (45) are semi-circular rings, and the inner surface of the clamping plate (37) and the outer surface of the pressure plate (45) are on the same vertical line.

8. The mounting structure of the digital differential pressure sensor according to claim 1, characterized in that: The cushioning pad (451) is made of medical-grade silicone.

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