Rotary float flowmeter for anaesthesia machine

Abstract

The invention discloses a rotary float flowmeter for an anaesthesia machine, relates to the field of flowmeters, solves the problem that a rubber pad and foamed cotton in an existing float flowmeter are poor in durability, and comprises a glass cylinder and two supporting seats symmetrically and fixedly mounted at the top and the bottom of the glass cylinder respectively. A guide rod is fixedly installed between the inner sides of the two supporting seats, a floater body is slidably installed on the outer side of the guide rod, and butt joint pipes are arranged on the sides, away from the glass cylinder, of the supporting seats; the buffer mechanism is used for providing safe buffer for the floater body, and the buffer mechanism is mounted below the glass cylinder; by means of the buffering mechanism, when the floater body falls, the principle that like poles of magnets repel each other is utilized, buffering is provided for falling of the floater body, the problem that a rubber pad and foamed cotton in the flow meter are prone to being broken is solved, durability is higher, and therefore the safety protection effect is achieved.

Description

Technical Field

[0001] The present invention relates to the field of flow meters, and particularly to a rotary float flow meter for an anesthesia machine. Background Art

[0002] An anesthesia machine sends anesthetic drugs into the patient's alveoli through a mechanical circuit to form an anesthetic gas partial pressure, thereby inhibiting the central nervous system and achieving the effect of general anesthesia. The anesthesia machine mainly consists of components such as an anesthetic vaporizer, a flow meter, a folding bellows ventilator, and a breathing circuit.

[0003] The flow meter plays a crucial role in the anesthesia machine. Gas enters from the bottom of the flow meter, creating a pressure difference between the upper and lower ends of the float. This pressure difference generates an upward buoyant force on the float. When the buoyant force is greater than the gravity of the float, the float rises, the annular gap area increases, the flow rate decreases, and the buoyant force decreases until the buoyant force and gravity reach equilibrium, and the float stabilizes at a certain height. The operator can directly read the gas flow rate by observing the position of the float on the external scale of the conical tube, ensuring that the amount of gas inhaled by the patient matches the anesthetic requirements. The existing Chinese patent publication: CN209485446U discloses a float stop card type glass rotor flow meter. A foam cotton is fixedly installed on a foam cotton mounting plate, and a rubber pad is fixedly installed above the middle of the foam cotton on the foam cotton mounting plate. When the gas valve or hydraulic valve is suddenly opened, the gas or fluid suddenly entering the glass tube will flush the float to the top of the float guide mandrel. Since the rubber pad and the foam cotton are both arranged above the float guide mandrel, the float will hit the foam cotton or the rubber pad, providing a certain buffering effect on the float. Although it can improve the safety of the float during movement, the rubber pad and the foam cotton are often squeezed and hit, which will affect the elastic fatigue of the rubber pad and the foam cotton, resulting in easy cracking at the impact site in the later stage and low durability. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotary float flow meter for an anesthesia machine, which can utilize the principle of like poles repelling each other of magnets to provide buffering for the falling of the float body when the float body falls, and utilize a damper to provide buffering for the reaction force received by the mounting ring, improve the safety and durability of the magnet ring, and achieve the effect of safety protection.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A rotary float flowmeter for an anesthesia machine, comprising: a glass cylinder and two support seats symmetrically and fixedly installed at the top and bottom of the glass cylinder respectively. Air inlets and air outlets corresponding to the glass cylinder are respectively formed on the surfaces of the two support seats. A guide rod is fixedly installed between the inner sides of the two support seats. A float body is slidably installed on the outer side of the guide rod. The flow rate of the gas is calculated by the movement of the float body on the outer side of the guide rod. A docking pipe is arranged on one side of the support seat away from the glass cylinder; further comprising: a buffer mechanism for providing safety buffering for the float body, the buffer mechanism is installed below the glass cylinder; a sealing mechanism for safely sealing and opening the inner side of the support seat, the sealing mechanism is installed on the inner side of the support seat; a quick installation mechanism for quickly assembling the support seat and the docking pipe, the quick installation mechanism is installed between the support seat and the docking pipe.

[0006] Preferably, the buffer mechanism includes an installation ring arranged below the glass cylinder. The inner side of the support seat located below the glass cylinder is in contact with the outer side of the installation ring. The installation ring can move along the inner side of the support seat. A magnet ring is fixedly installed at the top of the installation ring. A magnet block is fixedly installed inside the float body. The guide rod passes through the magnet block. The top of the magnet ring and the bottom of the magnet block are of the same pole. The repulsive force between the magnet block and the magnet ring is used to provide buffering for the falling of the float body. A plurality of installation blocks are fixedly installed on the outer side of the installation ring and are evenly distributed at equal intervals in a ring shape. A cavity for the installation blocks to be limited and slide is formed on the inner side of the support seat. A damper is installed between the installation block and the inner side of the cavity of the support seat. The damper can provide buffering for the reaction force received by the installation ring to prevent the excessive force of the direct collision between the magnet ring and the magnet block. A flow guiding ring is fixedly installed at the bottom of the installation block. The flow guiding ring is located below the cavity. The flow guiding ring can provide sealing for the cavity. The outer side of the flow guiding ring is in contact with the inner side of the support seat. The bottom of the flow guiding ring is of an arc-shaped structure to guide the gas entering the air inlet of the support seat below the glass cylinder.

[0007] Preferably, the sealing mechanism includes a positioning box fixedly installed on the side of the support base away from the glass cylinder. Six sealing plates are arranged inside the positioning box in a centrosymmetric distribution. Adjacent sealing plates are in contact with each other. The outer sides of the sealing plates are in contact with the outer side of the support base. When the six sealing plates are in contact with each other, they can provide sealing for the support base to prevent external particulate impurities from entering the glass cylinder. A sliding rod is fixedly installed on the side of the sealing plate away from the support base. A sliding groove for the sliding rod to be limited and slide is opened inside the positioning box to provide guidance for the movement of the sliding rod. The sliding grooves on the positioning box are in a centrosymmetric distribution. A slider is fixedly installed on the side of the sealing plate away from the sliding rod. A turntable is rotatably installed inside the support base. A sliding cavity for the slider to be limited and slide is opened on the outer side of the turntable. Rotating the turntable can drive the sliding rod on the sealing plate to move along the sliding groove on the positioning box through the slider, causing the six sealing plates to swing open. An adjusting rod is rotatably installed between the two support bases. A first gear is fixedly installed at both ends of the adjusting rod. The first gear is located inside the support base. A toothed ring matched with the first gear is fixedly installed on the side of the turntable away from the sealing plate. Rotating the adjusting rod can drive the toothed ring to rotate through the first gear.

[0008] Preferably, the quick-installation mechanism includes a housing fixedly installed on the side of the support base close to the positioning box. Four screws are rotatably installed between the support base and the inside of the housing in a centrosymmetric distribution. A second gear matched with the first gear is rotatably installed inside the support base. The inside of the second gear is fixedly connected to the adjacent screw. A synchronous belt is rotatably installed between the four screws. When the first gear rotates, the four screws can be synchronously rotated through the second gear and the synchronous belt. Four support rods are fixedly installed between the support base and the inside of the housing in a centrosymmetric distribution. A pressing block matched with the screw is slidably installed on the outer side of the support rod. The support rod can provide guidance for the movement of the pressing block. A sleeve is fixedly installed on the outer side of the positioning box. The outer side of the docking pipe is in contact with the inside of the sleeve. Four insertion blocks are slidably installed on the outer side of the sleeve in a centrosymmetric distribution. The four insertion blocks and the four pressing blocks are on the same vertical line respectively. Two symmetrically distributed springs are fixedly installed between the two sides of the insertion block and the sleeve to facilitate the movement and reset of the insertion block. One end of the insertion block close to the spring and one end of the pressing block are both corresponding arc surface structures, so that when the pressing block moves downward, it can push the insertion block to make a horizontal movement. An annular groove for the insertion block to be limited and inserted is opened on the outer side of the docking pipe. When the insertion block is inserted into the annular groove, the docking pipe can be fixed in the sleeve.

[0009] Preferably, a protective shell is fixedly installed between the two support seats. Two observation ports are symmetrically arranged on the outer side of the protective shell. Two scale bars are arranged on the outer side of the glass cylinder and are respectively aligned with the two observation ports, facilitating the observation of the movement data of the float body, and providing protection for the glass cylinder through the protective shell.

[0010] Preferably, a plurality of guide vanes are fixedly installed at the bottom of the guide ring in a centrosymmetric distribution, enabling the gas to enter the interior of the glass cylinder evenly through the guide vanes.

[0011] Preferably, an anti-slip sleeve is fixedly installed on the outer side of the adjusting rod, facilitating the rotational adjustment of the adjusting rod.

[0012] Preferably, a limiting block is fixedly installed at one end of the slider away from the sealing plate. The size of the limiting block is larger than that of the slider. A sliding groove for the limiting block to slide is arranged in the sliding groove of the turntable, improving the smoothness of the movement of the sealing plate.

[0013] Preferably, a positioning rod is arranged on the outer side of the spring. The positioning rod is fixedly installed on the outer side of the sleeve. A through hole for the sleeve to be inserted and limited is arranged on the outer side of the plug block, providing guidance for the movement of the plug block and preventing the spring from bending.

[0014] Preferably, a rubber pad is fixedly installed at one end of the plug block away from the spring, providing protection for the annular groove of the plug block and the butt joint pipe.

[0015] The above embodiments of the present invention can achieve the following beneficial effects: 1. Through the buffer mechanism, when the float body falls, the present invention can use the principle of like poles of magnets repelling each other to provide buffering for the fall of the float body, and use the damper to provide buffering for the reaction force received by the mounting ring, improving the safety and durability of the magnet ring, solving the problem that the rubber pads and foamed cotton in the flowmeter are prone to breakage, and thus achieving the effect of safety protection.

[0016] 2. Through the sealing mechanism, before the gas enters the glass cylinder, the six mutually contacting sealing plates provide sealing for the support seats, and can synchronously close and open the exhaust ports and intake ports on the two support seats, improving the convenience of opening and sealing the glass cylinder, and thus achieving the effect of safety sealing, preventing external particulate impurities from entering the glass cylinder.

[0017] 3. Through the quick installation mechanism, when the six sealing plates are opened, the four plug blocks on the inner side of the sleeve can be inserted into the annular grooves of the butt joint pipe, enabling the sleeve to be quickly butted with the butt joint pipe, improving the convenience of butting the glass cylinder and the butt joint pipe, and when disassembling, the two ends of the glass cylinder can be sealed in time, thus achieving the effect of quick butting and installation. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the arc block and the adjustment component in the present invention; Figure 3 is a schematic diagram of the first measuring seat and the mounting plate in the present invention; Figure 4 is a schematic diagram of the identification strip and the glass cylinder in the present invention; Figure 5 is a schematic diagram of the identification strip and the glass cylinder in the present invention; Figure 6 is a schematic diagram of the sealing mechanism in the present invention; Figure 7 is a schematic diagram of the first clamping plate and the slider in the present invention; Figure 8 is a schematic diagram of the insertion rod and the insertion block in the present invention.

[0019] In the figure: 1. Glass cylinder; 2. Support seat; 3. Guide rod; 4. Float body; 5. Docking pipe; 6. Installation ring; 7. Magnet ring; 8. Magnet block; 9. Installation block; 10. Damper; 11. Flow guide ring; 12. Positioning box; 13. Sealing plate; 14. Slide rod; 15. Slider; 16. Turntable; 17. Adjusting rod; 18. First gear; 19. Tooth ring; 20. Outer shell; 21. Screw; 22. Second gear; 23. Synchronous belt; 24. Support rod; 25. Pressing block; 26. Sleeve; 27. Insertion block; 28. Spring; 29. Protective shell; 30. Flow guide strip; 31. Anti-slip sleeve; 32. Limit block; 33. Positioning rod; 34. Rubber pad. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1 - 8, A rotary float flowmeter for an anesthesia machine shown in the figure includes a glass cylinder 1 and two support seats 2 symmetrically and fixedly installed at the top and bottom of the glass cylinder 1 respectively. An air inlet and an air outlet corresponding to the glass cylinder 1 are respectively provided on the surfaces of the two support seats 2. A guide rod 3 is fixedly installed between the inner sides of the two support seats 2. A float body 4 is slidably installed on the outer side of the guide rod 3. By the movement of the float body 4 on the outer side of the guide rod 3, the gas flow rate is calculated. A docking pipe 5 is provided on the side of the support seat 2 away from the glass cylinder 1. A protective shell 29 is fixedly installed between the two support seats 2. Two observation ports symmetrically distributed are provided on the outer side of the protective shell 29. Two scale bars aligned with the two observation ports respectively are provided on the outer side of the glass cylinder 1, which is convenient for observing the movement data of the float body 4 and provides protection for the glass cylinder 1 through the protective shell 29; It also includes: a buffer mechanism for providing safety buffering for the float body 4, and the buffer mechanism is installed below the glass cylinder 1; a sealing mechanism for safely sealing and opening the inner side of the support seat 2, and the sealing mechanism is installed inside the support seat 2; a quick installation mechanism for quickly assembling the support seat 2 and the docking pipe 5, and the quick installation mechanism is installed between the support seat 2 and the docking pipe 5.

[0022] The buffer mechanism includes a mounting ring 6 provided below the glass cylinder 1. The inner side of the support seat 2 located below the glass cylinder 1 is in contact with the outer side of the mounting ring 6. The mounting ring 6 can move along the inner side of the support seat 2. A magnet ring 7 is fixedly installed at the top of the mounting ring 6. A magnet block 8 is fixedly installed inside the float body 4. The guide rod 3 passes through the magnet block 8. The top of the magnet ring 7 and the bottom of the magnet block 8 are of the same pole. Using the repulsive force between the magnet block 8 and the magnet ring 7, buffering is provided for the falling of the float body 4. A plurality of mounting blocks 9 annularly and equidistantly distributed are fixedly installed on the outer side of the mounting ring 6. A cavity for the mounting blocks 9 to slide with limited position is provided on the inner side of the support seat 2. A damper 10 is installed between the mounting block 9 and the inner side of the cavity of the support seat 2. The damper 10 can provide buffering for the reaction force received by the mounting ring 6 to prevent the excessive force of the direct collision between the magnet ring 7 and the magnet block 8. A diversion ring 11 is fixedly installed at the bottom of the mounting block 9. The diversion ring 11 is located below the cavity. The diversion ring 11 can provide sealing for the cavity. The outer side of the diversion ring 11 is in contact with the inner side of the support seat 2. The bottom of the diversion ring 11 is of an arc-shaped structure to guide the gas entering the air inlet of the support seat 2 below the glass cylinder 1. A plurality of diversion strips 30 symmetrically distributed around the center are fixedly installed at the bottom of the diversion ring 11, so that the gas can enter the inside of the glass cylinder 1 evenly through the diversion strips 30; When the gas in the glass cylinder 1 decreases, the float body 4 will quickly fall along the outside of the guide rod 3. The magnet block 8 on the float body 4 is close to the magnet ring 7 at the top of the mounting ring 6. Using the principle that like poles of the magnet block 8 and the magnet ring 7 repel each other, the magnet ring 7 provides a buffer for the falling of the float body 4 to prevent the magnet ring 7 from directly colliding with the float body 4, providing protection for the float body 4 and the glass cylinder 1. Moreover, the reaction force received by the mounting ring 6 can be buffered by the damper, thus achieving the effect of safety protection.

[0023] Working principle: First, the staff docks the two docking pipes 5 with the two support seats 2 on the glass cylinder 1. The docking pipe 5 at the bottom of the glass cylinder 1 injects gas into the glass cylinder 1, so that the gas enters the glass cylinder 1 evenly from the middle position at the bottom end of the glass cylinder 1 along the flow guide ring 11 and the flow guide strip 30, and is discharged from the docking pipe 5 at the top of the glass cylinder 1. Using the pressure difference between the upper and lower ends of the float body 4, the float body 4 moves upward along the outside of the guide rod 3, and the gas flow rate is obtained through the scale bar on the outside of the glass cylinder 1. When the gas injection into the glass cylinder 1 stops, the float body 4 moves downward along the outside of the guide rod 3, making the magnet block 8 inside the float body 4 close to the magnet ring 7 at the top of the mounting ring 6. Since the top of the magnet ring 7 and the bottom of the magnet block 8 are of the same pole, using the repulsive force between like poles of the magnets, the magnet ring 7 provides a buffer for the falling of the float body 4 through the magnet block 8 to prevent the float body 4 from damaging the glass cylinder 1 due to impact. Moreover, the reaction force received by the magnet ring 7 can drive the mounting block 9 on the mounting ring 6 to move along the cavity in the support seat 2, so that the mounting block 9 squeezes the damper 10, and the damper 10 provides a buffer for the mounting ring 6 to reduce the vibration of the mounting ring 6 on the support seat 2, realizing the smooth falling of the float body 4, thus achieving the effect of safety protection, facilitating the repeated measurement of the gas flow rate, and improving the durability of the flowmeter.

[0024] Embodiment 2: Please refer to Figures 2 - 6, This embodiment further elaborates on the first embodiment. The sealing mechanism shown in the figure includes a positioning box 12 fixedly installed on the side of the support base 2 away from the glass cylinder 1. Six sealing plates 13 are symmetrically distributed around the center inside the positioning box 12. Adjacent sealing plates 13 are in contact with each other. The outer side of the sealing plate 13 is in contact with the outer side of the support base 2. When the six sealing plates 13 are in contact with each other, they can provide sealing for the support base 2 to prevent external particulate impurities from entering the glass cylinder 1. A sliding rod 14 is fixedly installed on the side of the sealing plate 13 away from the support base 2. A sliding groove for limiting the sliding of the sliding rod 14 is provided inside the positioning box 12 to guide the movement of the sliding rod 14. The sliding grooves on the positioning box 12 are symmetrically distributed around the center. A slider 15 is fixedly installed on the side of the sealing plate 13 away from the sliding rod 14. A turntable 16 is rotatably installed inside the support base 2. A sliding cavity for limiting the sliding of the slider 15 is provided on the outer side of the turntable 16. Rotating the turntable 16 can drive the sliding rod 14 on the sealing plate 13 to move along the sliding groove on the positioning box 12 through the slider 15, causing the six sealing plates 13 to swing open. An adjusting rod 17 is rotatably installed between the two support bases 2. Gear one 18 is fixedly installed at both ends of the adjusting rod 17. Gear one 18 is located inside the support base 2. A toothed ring 19 that cooperates with gear one 18 is fixedly installed on the side of the turntable 16 away from the sealing plate 13. Rotating the adjusting rod 17 can drive the toothed ring 19 to rotate through gear one 18. An anti-slip sleeve 31 is fixedly installed on the outer side of the adjusting rod 17 to facilitate the rotation and adjustment of the adjusting rod 17. A limiting block 32 is fixedly installed at the end of the slider 15 away from the sealing plate 13. The size of the limiting block 32 is larger than that of the slider 15. A sliding groove for limiting the sliding of the limiting block 32 is provided in the sliding groove of the turntable 16 to improve the smoothness of the movement of the sealing plate 13.

[0025] In this embodiment: Considering that before the flowmeter is installed or used, external particulate impurities are likely to enter the inside of the glass cylinder 1, the six mutually contacting sealing plates 13 can provide sealing for the end of the glass cylinder 1 to prevent external particulate impurities from entering the glass cylinder 1 and provide protection for the glass cylinder 1. When the docking pipe 5 is docked with the glass cylinder 1, the staff can hold the anti-slip sleeve 31 and drive the adjusting rod 17 to rotate, so that the adjusting rod 17 drives the toothed ring 19 to rotate through gear one 18. The two toothed rings 19 drive the corresponding turntables 16 to rotate, so that the turntables 16 drive the sliders 15 to move through the sliding grooves. While the slider 15 can drive the sealing plate 13 to move, the sealing plate 13 drives the sliding rod 14 to move along the sliding groove on the positioning box 12, and the sealing plate 13 can be in a swinging state, opening the top and bottom of the glass cylinder 1, and the docking pipe 5 can inject gas from the bottom of the glass cylinder 1, thus achieving the effects of facilitating sealing protection and synchronous opening.

[0026] Embodiment Three: Please refer to Figures 6 - 8, this embodiment further illustrates other embodiments. The quick - installation mechanism shown in the figure includes a housing 20 fixedly installed on the side of the support base 2 close to the positioning box 12. Four symmetrically distributed screws 21 are rotatably installed between the support base 2 and the inner side of the housing 20. A gear two 22 that cooperates with the gear one 18 is rotatably installed on the inner side of the support base 2. The inner side of the gear two 22 is fixedly connected to the adjacent screw 21. A synchronous belt 23 is rotatably installed between the four screws 21. When the gear one 18 rotates, the four screws 21 can be synchronously rotated through the gear two 22 and the synchronous belt 23. Four symmetrically distributed support rods 24 are fixedly installed between the support base 2 and the inner side of the housing 20. A pressing block 25 that cooperates with the screw 21 is slidably installed on the outer side of the support rod 24. The support rod 24 can provide guidance for the movement of the pressing block 25. A sleeve 26 is fixedly installed on the outer side of the positioning box 12. The outer side of the docking pipe 5 is in contact with the inner side of the sleeve 26. Four symmetrically distributed insertion blocks 27 are slidably installed on the outer side of the sleeve 26. The four insertion blocks 27 and the four pressing blocks 25 are on the same vertical line respectively. Two symmetrically distributed springs 28 are fixedly installed between the two sides of the insertion block 27 and the sleeve 26, which is convenient for the movement and reset of the insertion block 27. One end of the insertion block 27 close to the spring 28 and one end of the pressing block 25 are both corresponding arc - surface structures, so that when the pressing block 25 moves downward, it can push the insertion block 27 to move horizontally. An annular groove for the insertion block 27 to be limited and inserted is opened on the outer side of the docking pipe 5. When the insertion block 27 is inserted into the annular groove, the docking pipe 5 can be fixed in the sleeve 26. A positioning rod 33 is arranged on the outer side of the spring 28. The positioning rod 33 is fixedly installed on the outer side of the sleeve 26. A through - hole for the sleeve 26 to be limited and inserted is opened on the outer side of the insertion block 27, which provides guidance for the movement of the insertion block 27 and prevents the spring 28 from bending. A rubber pad 34 is fixedly installed at the end of the insertion block 27 away from the spring 28, which provides protection for the insertion block 27 and the annular groove of the docking pipe 5.

[0027] In this embodiment: When the staff rotates the adjusting rod 17, the gear one 18 can drive the gear two 22 to rotate. The gear two 22 drives the corresponding screw 21 to rotate. The screw 21 drives the pressing block 25 to move along the outer side of the support rod 24, so that the arc surface of the pressing block 25 is in contact with the arc surface of the insertion block 27. The pressing block 25 pushes the insertion block 27 to be inserted into the annular groove of the docking pipe 5. When the sealing plate 13 opens the glass cylinder 1, the insertion block 27 can fix the docking pipe 5 inside the sleeve 26, improving the convenience of the docking between the docking pipe 5 and the glass cylinder 1. Thus, when sealing the glass cylinder 1, the pressing block 25 can move away from the insertion block 27, and using the resilience of the spring 28, the insertion block 27 is pulled out from the annular groove on the docking pipe 5, timely sealing both ends of the glass cylinder 1, thereby achieving the effect of quick docking and installation.

[0028] In some embodiments, the rotary float flowmeter for an anesthesia machine further includes a processor (not shown in the figure) and an ultrasonic sensor (not shown in the figure). The ultrasonic sensor is directed at the float body 4. The processor is signal-connected to the ultrasonic sensor. The ultrasonic sensor continuously emits ultrasonic signals to the float body 4, receives ultrasonic data and sends it to the processor. The processor has a trained variational autoencoder and a convolutional neural network built therein. The input of the variational autoencoder is the ultrasonic data, and the output of the variational autoencoder is the internal simulation image of the float body 4. The input of the convolutional neural network is the internal simulation image of the float body 4, and the output of the convolutional neural network is the degree of structural damage of the float body 4. If the degree of structural damage of the float body 4 is greater than the threshold, the processor sends an alarm signal to the control port of the management user.

[0029] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary float flowmeter for an anesthesia machine, characterized in that, Including: A glass cylinder (1) and two support seats (2) symmetrically and fixedly installed at the top and bottom of the glass cylinder (1) respectively. A guide rod (3) is fixedly installed between the inner sides of the two support seats (2). A float body (4) is slidably installed on the outer side of the guide rod (3). A docking pipe (5) is arranged on one side of the support seat (2) away from the glass cylinder (1). Also including: A buffer mechanism for providing safety buffering for the float body (4), and the buffer mechanism is installed below the glass cylinder (1). A sealing mechanism for safely sealing and opening the inner side of the support seat (2), and the sealing mechanism is installed on the inner side of the support seat (2). A quick installation mechanism for quickly assembling the support seat (2) and the docking pipe (5), and the quick installation mechanism is installed between the support seat (2) and the docking pipe (5).

2. The rotary float flowmeter for anesthetic machine according to claim 1, wherein: The buffer mechanism includes an installation ring (6) arranged below the glass cylinder (1). The inner side of the support seat (2) located below the glass cylinder (1) is in contact with the outer side of the installation ring (6). A magnet ring (7) is fixedly installed at the top of the installation ring (6). A magnet block (8) is fixedly installed on the inner side of the float body (4). The top of the magnet ring (7) and the bottom of the magnet block (8) are of the same pole. A plurality of installation blocks (9) are fixedly installed on the outer side of the installation ring (6) in an annular and equally spaced distribution. A cavity for limiting the sliding of the installation block (9) is formed in the inner side of the support seat (2). A damper (10) is installed between the installation block (9) and the inner side of the cavity of the support seat (2). A guide ring (11) is fixedly installed at the bottom of the installation block (9). The guide ring (11) is located below the cavity. The outer side of the guide ring (11) is in contact with the inner side of the support seat (2). The bottom of the guide ring (11) is of an arc-shaped structure.

3. A rotary float flowmeter for an anesthesia machine according to claim 1, characterized in that: The sealing mechanism includes a positioning box (12) fixedly installed on one side of the support seat (2) away from the glass cylinder (1). Six sealing plates (13) are symmetrically distributed at the center in the inner side of the positioning box (12). Adjacent sealing plates (13) are in contact with each other. The outer side of the sealing plate (13) is in contact with the outer side of the support seat (2). A sliding rod (14) is fixedly installed on one side of the sealing plate (13) away from the support seat (2). A sliding groove for limiting the sliding of the sliding rod (14) is formed in the inner side of the positioning box (12). A sliding block (15) is fixedly installed on one side of the sealing plate (13) away from the sliding rod (14). A turntable (16) is rotatably installed in the inner side of the support seat (2). A sliding cavity for limiting the sliding of the sliding block (15) is formed on the outer side of the turntable (16). An adjusting rod (17) is rotatably installed between the two support seats (2). Gear ones (18) are fixedly installed at both ends of the adjusting rod (17). A toothed ring (19) matched with the gear one (18) is fixedly installed on one side of the turntable (16) away from the sealing plate (13).

4. The rotating float flowmeter for an anesthesia machine according to claim 3, characterized in that: The quick-installation mechanism includes a housing (20) fixedly installed on one side of the support base (2) close to the positioning box (12). Four screws (21) distributed centrosymmetrically are rotatably installed between the support base (2) and the inner side of the housing (20). A gear two (22) cooperating with the gear one (18) is rotatably installed on the inner side of the support base (2). The inner side of the gear two (22) is fixedly connected to the adjacent screw (21). A synchronous belt (23) is rotatably installed between the four screws (21). Four struts (24) distributed centrosymmetrically are fixedly installed between the support base (2) and the inner side of the housing (20). A pressing block (25) cooperating with the screw (21) is slidably installed on the outer side of the strut (24). A sleeve (26) is fixedly installed on the outer side of the positioning box (12). Four insertion blocks (27) distributed centrosymmetrically are slidably installed on the outer side of the sleeve (26). Two symmetrically distributed springs (28) are fixedly installed between both sides of the insertion block (27) and the sleeve (26). One end of the insertion block (27) close to the spring (28) and one end of the pressing block (25) are both corresponding arc surface structures. An annular groove for the insertion block (27) to be limited and inserted is formed on the outer side of the docking pipe (5).

5. A rotary float flowmeter for an anesthesia machine according to claim 1, characterized in that: A protective shell (29) is fixedly installed between the two support bases (2). Two symmetrically distributed observation ports are formed on the outer side of the protective shell (29). Two scale bars aligned with the two observation ports respectively are formed on the outer side of the glass cylinder (1).

6. The rotary float flowmeter for anesthetic machine according to claim 2, characterized in that: A plurality of flow guide bars (30) distributed centrosymmetrically are fixedly installed at the bottom of the flow guide ring (11).

7. A rotary float flowmeter for an anesthesia machine according to claim 3, characterized in that: An anti-slip sleeve (31) is fixedly installed on the outer side of the adjusting rod (17).

8. A rotary float flowmeter for an anesthesia machine according to claim 3, characterized in that: A limiting block (32) is fixedly installed at one end of the slider (15) away from the sealing plate (13). A chute for the limiting block (32) to be limited and slide is formed in the chute of the turntable (16).

9. A rotary float flowmeter for an anesthesia machine according to claim 4, characterized in that: A positioning rod (33) is arranged on the outer side of the spring (28). The positioning rod (33) is fixedly installed on the outer side of the sleeve (26). A through hole for the sleeve (26) to be limited and inserted is formed on the outer side of the insertion block (27).

10. A rotary float flowmeter for an anesthesia machine according to claim 4, characterized in that: A rubber pad (34) is fixedly installed at one end of the insertion block (27) away from the spring (28).

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