A ventilation device imitating the respiratory system of birds

Abstract

The present invention discloses a ventilation device that simulates a bird's respiratory system, comprising a cylinder fixed to a base, the interior of the cylinder being a hollow cavity, two sets of abdominal cavities being symmetrically arranged inside the cylinder, the middle cavity inside the cylinder being a main cavity, one end of the main cavity being connected to an air inlet, and the other end of the main cavity being connected to an exhaust port. Gas enters the cylinder through the air inlet and circulates in the main cavity and each abdominal cavity. Both sets of abdominal cavities cooperate with a power synchronization mechanism, which in turn cooperates with a reciprocating linear motion mechanism and a ventilation mechanism to achieve gas exchange. A reaction filter is installed in the middle of the main cavity. Gas enters through the air inlet and undergoes a physical and chemical reaction with solids in the reaction filter before being discharged through the exhaust port. The present invention solves the problem of high mortality caused by suffocation in the extreme environment of a small, closed space and scarce oxygen when underground operations collapse in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of bionic mechanics, and in particular relates to a ventilation device that imitates a bird's respiratory system. Background Art

[0002] This invention is inspired by the dual respiratory system of birds. To adapt to flight, birds have developed a unique breathing method. Their respiratory system primarily consists of the trachea, lungs, and air sacs. During breathing, inhaled air first passes through the lungs, where some gas exchange occurs, while some gas, before exchange, enters the air sacs. During exhalation, the gas in the air sacs is forced out and exchanged again through the lungs. This breathing method, which allows for gas exchange in the lungs during both inhalation and exhalation, is called "dual breathing." The dual breathing principle significantly improves ventilation efficiency, and the multiple air sacs allow birds to reduce their weight and dissipate significant heat during flight. The present invention can be applied to self-rescue in various collapse accidents. In many collapse accidents, victims face breathing difficulties caused by lack of oxygen. Especially when a collapse occurs during underground operations, how to use auxiliary breathing equipment to implement self-rescue in an extreme environment with a small, closed space and scarce oxygen, and to buy rescue time, thereby effectively reducing the death rate caused by suffocation becomes extremely significant. However, existing auxiliary breathing equipment such as oxygen concentrators and ventilators cannot meet the requirements of efficient oxygen production for human breathing, and require a fixed AC power supply, are bulky, and have high costs, and cannot be used in extreme environments. Summary of the Invention

[0003] The purpose of the present invention is to provide a ventilation device that simulates the respiratory system of birds, which solves the problem in the prior art of high mortality caused by suffocation in an extreme environment with a small, closed space and scarce oxygen when a collapse occurs during underground operations.

[0004] The technical solution adopted by the present invention is a ventilation device that imitates the respiratory system of birds, including a cylinder body fixed on a base, the interior of the cylinder body is a cavity, and two groups of abdominal cavities are symmetrically arranged inside the cylinder body. The middle cavity inside the cylinder body is the main cavity, one end of the main cavity is connected to the air inlet, and the other end of the main cavity is connected to the exhaust port. The gas enters the cylinder body through the air inlet and circulates in the main cavity and each abdominal cavity. The two groups of abdominal cavities are both coordinated with the power synchronization mechanism, and the power synchronization mechanism is coordinated with the reciprocating linear motion mechanism and the ventilation mechanism to realize gas exchange. A reaction filter element is installed in the middle of the main cavity. The gas enters from the air inlet and undergoes physical and chemical reactions with the solids in the reaction filter element, and is then discharged through the exhaust port.

[0005] The present invention is also characterized in that:

[0006] There are four supports on the base, namely support A, support B, support C and support D. The cylinder body is fixed to the base through bolt assembly E, bolt assembly F, bolt assembly G and bolt assembly H respectively with support A, support B2-2, support C and support D.

[0007] The two groups of abdominal cavities have the same structure. Each group of abdominal cavities includes three abdominal cavities. The three abdominal cavities A are arranged in sequence on one side of the main cavity, and the three abdominal cavities B are arranged in sequence on the other side of the main cavity. Both abdominal cavity A and abdominal cavity B are connected to the main cavity, and the long axis of abdominal cavity A and the long axis of abdominal cavity B are perpendicular to the long axis of the main cavity.

[0008] The specific structure of the ventilation mechanism is as follows: a group of abdominal cavities on one side are provided with cylinder B, cylinder C, and cylinder D in sequence, and a group of abdominal cavities on the other side are provided with cylinder A, cylinder E, and cylinder F in sequence. Cylinder A, cylinder B, cylinder C, cylinder D, cylinder E, and cylinder F are respectively embedded in the 6 abdominal cavities on both sides of the cylinder body through interference fit. The cylinder in each abdominal cavity is axially positioned by the step surface in the abdominal cavity. The inside of the 6 abdominal cavities are designed with step surfaces. The corresponding cylinder in each abdominal cavity is embedded from the large hole end of the abdominal cavity, and the axial positioning is achieved by the step surface at the hole shoulder. Pistons A, piston B, piston C, piston D, piston E, and piston F are respectively embedded in cylinders A, cylinder B, cylinder C, cylinder D, cylinder E, and cylinder F in a clearance fit manner. The pistons make reciprocating linear motion along the inner wall of the cylinder, and the piston rod One end of A, piston rod F, and piston rod E is connected to piston A, piston F, and piston E respectively, and one end of piston rod B, piston rod C, and piston rod D is connected to piston B, piston C, and piston D respectively. The other ends of piston rod A, piston rod F, and piston rod E are fixedly connected to connecting plate A on the corresponding side through nut A, nut F, and nut E. Connecting plate A is fixedly connected to bearing seat A on the corresponding side through bolt assembly C and bolt assembly D. The other ends of piston rod B, piston rod C, and piston rod D are fixedly connected to connecting plate B on the corresponding side through nut B, nut, and nut. Connecting plate B is fixedly connected to bearing seat B on the corresponding side through bolt assembly A and bolt assembly B. The upper and lower connecting rods A and the inner hole of bearing seat A are transition fit, and the upper and lower connecting rods B and the inner hole of bearing seat B are transition fit.

[0009] Piston A, piston F, and piston E are respectively provided with piston pins A, piston pin F, and piston pin E. Piston pins A, piston pin F, and piston pin E are respectively connected to piston rods A, piston rods F, and piston rods E through corresponding fisheye bearings A, fisheye bearings F, and fisheye bearings E.

[0010] Piston B, piston C, and piston D are respectively provided with piston pins B, piston pin C, and piston pin D. Piston pins B, piston pin C, and piston pin D are respectively connected to piston rods B, piston rods C, and piston rods D through corresponding fisheye bearings B, fisheye bearings C, and fisheye bearings D.

[0011] The reciprocating linear motion mechanism uses a crank slider mechanism to achieve motion conversion. The two crank slider mechanisms are distributed on the left and right sides of the cylinder body. The specific structure is: the crank slider mechanism on one side includes a crank A, which is connected to one end of the connecting rod A through an axle pin B, and a bearing B is provided between the axle pin B and the connecting rod A, and the other end of the connecting rod A is connected to the slider structure A through the axle pin A; the crank slider mechanism on the other side includes a crank B, which is connected to one end of the connecting rod B through an axle pin D, and a bearing E is provided between the axle pin D and the connecting rod B, and the other end of the connecting rod B is connected to the slider structure B through the axle pin C.

[0012] The slider structure A includes a slider platform A connected to an axle pin A. The connecting rod A and the slider platform A are connected by the axle pin A and the bearing A. The slider platform A and the slider A are bonded together. A linear guide rail A is provided at the bottom of the slider A. The linear guide rail A is connected to the vertical plate A by a screw A. The slider platform A is connected to the ventilation mechanism.

[0013] The slider structure B includes a slider platform B connected to the shaft pin C. The connecting rod B and the slider platform B are connected through the shaft pin C and the bearing D. The slider platform B and the slider B are bonded together. A linear guide rail B is provided at the bottom of the slider B. The linear guide rail B is connected to the vertical plate B through a screw B. The slider platform B is connected to the ventilation mechanism.

[0014] The specific structure of the power synchronization mechanism is as follows: it includes a reduction motor, the reduction motor and the double synchronous pulley shaft are connected by a coupling, the reduction motor is used as the driving part, the double synchronous pulley shaft and the double synchronous pulley are connected by interference fit, the double synchronous pulley transmits power to the corresponding single pulley A and single pulley shaft B on both sides through synchronous belts A and B, the single pulley A and the single pulley shaft A on the same side are connected by interference fit, the single pulley B and the single pulley shaft B on the same side are connected by interference fit, the single pulley shaft A is supported on the support plate B by bearing F, the support plate B and the base are connected by welding, the single pulley shaft B is supported on the support plate A by bearing C, the support plate A and the base are connected by welding, the middle double synchronous pulley shaft is supported on the support plate C by bearing G, the support plate C and the base are connected by welding, the single pulley shaft A and the single pulley shaft B are connected to the reciprocating linear motion mechanism.

[0015] A reaction filter element is built into the main cavity, one end of which is connected to the end cover through a slot, the end cover is connected to the flange of the cylinder body 1 by a snap-fit method, a gasket is placed at the joint surface between the end cover and the cylinder body, and an adsorbent is added to the reaction filter element.

[0016] The reaction filter element has a three-layer filter structure, which includes a primary filter, an intermediate filter, and an advanced filter from the outside to the inside. Solid adsorbents or solid reactants are placed in the core of the advanced filter, the interlayer between the advanced filter and the intermediate filter, and the interlayer between the intermediate filter and the primary filter 38-1.

[0017] The beneficial effect of the present invention is that it provides a ventilation device that imitates the respiratory system of birds, which utilizes the principle of double breathing of birds to exchange gases and has high ventilation efficiency. The cylinder body is composed of a main cavity, an abdominal cavity, and an inlet and exhaust port structure. The abdominal cavity of the cylinder body cooperates with the piston to realize gas exchange through the movement of the piston. The gas is transported through a hose connected to the inlet and exhaust ports. A reaction filter element is installed in the middle of the main cavity. The gas enters from the air inlet and undergoes a physical and chemical reaction with the solid in the reaction filter element, and is then discharged through the exhaust port. When the piston performs a reciprocating motion, the gas passes through the main cavity twice, resulting in two gas exchanges, that is, the "double breathing" principle is utilized, the gas exchange rate is increased, and efficient ventilation is achieved. The overall device is small in size, the layout scheme has the characteristics of compact structure and strong reliability, and the subsequent maintenance cost is low. Structurally, a synchronous pulley mechanism achieves power synchronization on both sides, while a slider-crank mechanism achieves motion conversion. The two ventral cavities of the cylinder body are arranged in an opposing manner, with the synchronous belt device positioned beneath the cylinder body. The cylinder body features a lightweight design. The motor power is transmitted to the synchronous pulleys via a coupling. The synchronous pulleys on both sides are connected to the crank via a keyed connection. Power is transmitted to the piston via the slider-crank mechanism, resulting in reliable motion and low manufacturing costs. This invention simulates the principle of double breathing in birds and achieves efficient oxygen regeneration. The development of this ventilation device is crucial for improving ventilator equipment, optimizing landfill gas resource utilization technology systems, and achieving efficient gas-solid reactions. To date, no similar reports or patents have been reported domestically or internationally.

[0018] This device, used for disaster rescue operations during underground operations, combines oxygen production and assisted breathing functions. Through a motor-synchronous belt-crank slider-piston mechanism, rotary motion is converted into reciprocating motion, completing the intake and exhaust of the cylinder. The air inlet is connected to the breathing mask via an intake hose. Exhaled gas enters the cylinder through the breathing mask intake hose. The gas passes through the reaction filter in the cylinder to complete the oxygen production reaction. The generated oxygen then passes through the exhaust hose and breathing mask to assist the personnel in breathing. The reaction filter is connected to the end cap via a slot, and the end cap and cylinder are sealed with a sealing ring. During use, personnel can quickly replace the reaction filter, extending rescue time. When used in the pre-treatment stage of landfill gas in a garbage landfill, the device can improve the collection efficiency of methane and carbon dioxide and has the function of reducing and removing impurities. The landfill gas collecting pipe is connected to the air inlet, a methane adsorbent or a carbon dioxide adsorbent is placed in the filter element, and the exhaust port is connected to the post-processing stage. The motor-synchronous belt-crank slider-piston converts the rotary motion into the reciprocating motion of the piston, so that the landfill mixed gas is fully in contact with the adsorbent, and the useful gas is fully adsorbed through the filter element in the cylinder, thereby achieving the functions of efficient emission reduction and gas resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of a ventilation device imitating a bird's respiratory system according to the present invention;

[0020] Figure 2 A half-section top view of the components of a ventilation device imitating a bird's respiratory system according to the present invention (including a cylinder 1, a base 2, an end cover 37, and a gasket 36);

[0021] Figure 3 This is a full cross-sectional top view of a ventilation device imitating a bird's respiratory system according to the present invention;

[0022] Figure 4 This is a front view of a ventilation device that simulates a bird's respiratory system according to the present invention;

[0023] Figure 5 This is an AA composite cross-sectional top view of a ventilation device imitating a bird's respiratory system according to the present invention;

[0024] Figure 6 This is an enlarged view of the details of the axial positioning of the cylinder in the ventilation device of the bird-like respiratory system described in the present invention;

[0025] Figure 7 This is a left side view of a ventilation device imitating a bird's respiratory system according to the present invention;

[0026] Figure 8 This is a three-dimensional structural diagram of a reaction filter element 38 and an end cover 37 of a ventilation device imitating a bird's respiratory system according to the present invention.

[0027] In the figure, 1. Cylinder body, 2. Base, 1-1. Air inlet, 1-2. Abdominal cavity A, 1-3. Exhaust port, 1-4. Main cavity, 1-5. Abdominal cavity B, 2-1. Support A, 2-2. Support B, 2-3. Support C, 2-4. Support D, 3. Nut A, 4. Connecting plate A, 5. Cylinder barrel A, 6. Piston rod A, 7. Fisheye bearing A, 8. Piston pin A, 9. O-ring A, 10. Piston A, 11. Piston B, 12. O-ring B, 13. Piston pin B, 14. Fisheye bearing B, 15. Piston rod B, 16. Cylinder barrel B, 17. Connecting plate B, 18. Nut B, 19. Cylinder barrel C, 20. Piston C, 21. Screw Bolt assembly A, 22. Fisheye bearing C, 23. Piston pin C, 24. Piston rod C, 25. O-ring C, 26. Nut C, 27. Bolt assembly B, 28. Cylinder barrel D, 29. Nut D, 30. Piston rod D, 31. Fisheye bearing D, 32. Piston pin D, 33. O-ring D, 34. Bolt assembly E, 35. Piston D, 36. Washer, 37. End cap, 38. Reaction filter element, 38-1. Primary filter, 38-2. Intermediate filter, 38-3. Advanced filter, 39. Piston E, 40. Bolt assembly F, 41. O-ring E, 42. Piston pin E, 43. Fisheye bearing E, 44. Piston rod E, 45. Nut E, 46. Cylinder E, 47. Bolt assembly C, 48. Nut F, 49. O-ring F, 50. Piston rod F, 51. Piston pin F, 52. Fisheye bearing F, 53. Bolt assembly D, 54. Piston D, 55. Cylinder F, 56. Vertical plate A, 57. Screw A, 58. Bearing seat A, 59. Upper and lower connecting rods A, 60. Upper and lower connecting rods B, 61. Bearing seat B, 62. Screw B, 63. Vertical plate B, 64. Linear guide A, 65. Slider A, 66. Slider stage A, 67. Axis pin A, 68. Bearing A, 69. Connecting rod A, 70. Single pulley shaft A, 71. Crank A, 72. Single pulley A, 73. Axis pin B, 74. Bearing B, 75. Synchronous belt A, 76. Motor, 77. Coupling, 78. Double synchronous pulley shaft, 79. Double synchronous pulley, 80. Bearing C, 81. Support plate A, 82. Linear guide B, 83. Slider B, 84. Slider stage B, 85. Bearing D, 86. Axis pin C, 87. Connecting rod B, 88. Crank B, 89. Single pulley shaft B, 90. Single pulley B, 91. Bearing E, 92. Axis pin D, 93. Synchronous belt B, 94. Support plate B, 95. Bearing F, 96. Bolt assembly G, 97. Bolt assembly H, 98. Bearing G, 99. Support plate C, 100. Step surface. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The present invention is a ventilation device imitating the bird's respiratory system, combined with Figure 1 、 Figure 2 , including a cylinder body 1 fixed on a base 2, the interior of the cylinder body 1 is a cavity, and two groups of abdominal cavities are symmetrically arranged inside the cylinder body 1. The middle cavity inside the cylinder body 1 is the main cavity 1-4, one end of the main cavity 1-4 is connected to the air inlet 1-1, and the other end of the main cavity 1-4 is connected to the exhaust port 1-3. The gas enters the cylinder body through the air inlet 1-1. When the piston moves toward the outside of the cylinder body 1, the air pressure inside the cylinder body 1 decreases, and the gas is inhaled from the air inlet 1-1 and circulates in the main cavity and each abdominal cavity. When the piston moves toward the inside of the cylinder body 1, the inside of the cylinder body 1 is As the air pressure increases, the gas is discharged from the exhaust ports 1-3 and circulates in the main cavity and each abdominal cavity, which is exactly like the breathing of birds, thereby achieving a process of two gas exchanges in one breath, that is, the "double breathing" principle. Both sets of abdominal cavities cooperate with the power synchronization mechanism, which in turn cooperates with the reciprocating linear motion mechanism and the ventilation mechanism to achieve gas exchange. A reaction filter is installed in the middle of the main cavity 1-4. The gas enters from the air inlet 1-1 and undergoes physical and chemical reactions with the solids in the reaction filter, and is then discharged through the exhaust ports 1-3. Figure 2 As shown, four supports, namely support A2-1, support B2-2, support C2-3 and support D2-4, are provided on the base 2. The cylinder body 1 is fixed to the base 2 by bolt assembly E34, bolt assembly F40, bolt assembly G96 and bolt assembly H97 respectively in cooperation with support A2-1, support B2-2, support C2-3 and support D2-4.

[0030] like Figure 2 、 Figure 3 As shown, the two groups of abdominal cavities have the same structure. Each group of abdominal cavities includes three abdominal cavities. The three abdominal cavities A1-2 are sequentially arranged on one side of the main cavity 1-4, and the three abdominal cavities B1-5 are sequentially arranged on the other side of the main cavity 1-4. The abdominal cavities A1-2 and B1-5 are both connected to the main cavity 1-4, and the long axes of the abdominal cavities A1-2 and B1-5 are both perpendicular to the long axes of the main cavity 1-4. Figure 3 、 Figure 4 As shown, the specific structure of the ventilation mechanism is as follows: the three abdominal cavities A1-2 are sequentially provided with cylinders B16, C19, and D28; the three abdominal cavities B1-5 are sequentially provided with cylinders A5, E46, and F55; cylinders A5, B16, C19, D28, E46, and F55 are respectively embedded in the six abdominal cavities on both sides of the cylinder body through interference fit, and the cylinder in each abdominal cavity is axially positioned by the step surface 100 in the abdominal cavity, as shown in FIG. Figure 6The figure shows an enlarged view of the details of the axial positioning of the cylinder B16. The abdominal cavities A1-2 and the three abdominal cavities B1-5 are designed with a step surface 100. The corresponding cylinder in each abdominal cavity is inserted from the large hole end of the abdominal cavity, and the axial positioning is achieved by the step surface 100 at the hole shoulder. The pistons A10, B11, C20, D35, E39, and F54 are respectively inserted into the cylinders A5, B16, C19, D28, E46, and F55 in a clearance fit manner. The pistons make reciprocating linear motion along the inner walls of the cylinders. An annular groove is provided on the piston head, and the annular grooves are respectively covered with O-rings A9, B12, C25, D33, E41, and F49 to reduce wear and act as a seal. One end of the piston rod A6, piston rod F50, and piston rod E44 is connected to the piston A10, piston F54, and piston E39 respectively. One end of the piston rod B15, piston rod C24, and piston rod D30 is connected to the piston B11, piston C20, and piston D35 respectively. The other ends of the piston rod A6, piston rod F50, and piston rod E44 are fixedly connected to the connecting plate A4 on the corresponding side through nuts A3, nut F48, and nut E45. The connecting plate A4 is fixedly connected to the bearing seat A58 on the corresponding side through bolt assembly C47 and bolt assembly D53. The other ends of the piston rods B15, piston rod C24, and piston rod D30 are fixedly connected to the connecting plate B17 on the corresponding side through nuts 18B, nut 26C, and nut 29D. The connecting plate B1 is fixedly connected to the bearing seat A58 on the corresponding side through bolt assembly A47 and bolt assembly D53. 21. Bolt assembly B27 is fixedly connected to bearing seat B61 on the corresponding side. Piston A10, piston F54, and piston E39 are respectively provided with piston pins A8, piston pin F51, and piston pin E42. Piston pins A8, piston pin F51, and piston pin E42 are respectively connected to piston rods A6, piston rod F50, and piston rod E44 through corresponding fisheye bearings A7, fisheye bearing F52, and fisheye bearing E43. Piston B11, piston C20, and piston D35 are respectively provided with piston pins B13, piston pin C23, and piston pin D32. Piston pins B13, piston pin C23, and piston pin D32 are respectively connected to piston rods B15, piston rod C24, and piston rod D30 through corresponding fisheye bearings B14, fisheye bearing C22, and fisheye bearing D31. The piston rod transmits reciprocating linear motion to the six pistons. A transition fit exists between the upper and lower connecting rods A59 and the inner bore of bearing seat A58, and between the upper and lower connecting rods B60 and the inner bore of bearing seat B61. The ventilation device, consisting of the upper and lower connecting rods, bearing seat, connecting plates, piston rod, and pistons, transmits the reciprocating linear motion of the upper and lower connecting rods to the pistons, enabling them to complete the inhalation and exhalation functions within the abdominal cavity.

[0031] like Figure 4 、 Figure 5As shown, the reciprocating linear motion mechanism adopts a crank slider mechanism to realize motion conversion. The two crank slider mechanisms are distributed on the left and right sides of the cylinder body and are welded to the base 2 through the vertical plate A56 and the vertical plate B63 respectively. The specific structure is: the crank slider mechanism on one side includes a crank A71, which is connected to one end of the connecting rod A69 through an axle pin B73, a bearing B74 is provided between the axle pin B73 and the connecting rod A69, and the other end of the connecting rod A69 is connected to the slider structure A through the axle pin A67; the crank slider mechanism on the other side includes a crank B88, which is connected to one end of the connecting rod B87 through an axle pin D92, a bearing E91 is provided between the axle pin D92 and the connecting rod B87, and the other end of the connecting rod B87 is connected to the slider structure B through the axle pin C86. The slider structure A includes a slider platform A66 connected to an axle pin A67. The connecting rod A69 and the slider platform A66 are connected by the axle pin A67 and the bearing A68. The slider platform A66 and the slider A65 are bonded together. A linear guide rail A64 is provided at the bottom of the slider A65. The slider A65 can perform reciprocating linear motion along the linear guide rail A64. The linear guide rail A64 is connected to the vertical plate A56 by a screw A57. The slider platform A66 is connected to the upper and lower connecting rods A59 in the ventilation mechanism. The slider structure B includes a slider platform B84 connected to the axle pin C86. The connecting rod B87 and the slider platform B84 are connected by the axle pin C86 and the bearing D85. The slider platform B84 is bonded to the slider B83. A linear guide rail B82 is provided at the bottom of the slider B83. B83 can perform reciprocating linear motion along the linear guide rail B82. The linear guide rail B82 is connected to the vertical plate B63 by a screw B62. The slider platform B84 is connected to the upper and lower connecting rods B60 in the ventilation mechanism.

[0032] The crank-slider mechanism converts the rotational motion of the crank into the reciprocating linear motion of the slider part, and further transmits the motion to the ventilation mechanism through the upper and lower connecting rods A59 (B60) connected to the slider platform A66 (B84).

[0033] like Figure 5As shown, the power synchronization mechanism uses a synchronous belt device to achieve power synchronization on both sides. The power synchronization mechanism is set on the lower side of the cylinder body 1, and the structure is compact and reasonable. The specific structure is: it includes a reduction motor 76, which is connected to the double synchronous pulley shaft 78 by a coupling 77. The reduction motor 76 serves as a driving part, and the power is transmitted to the double synchronous pulley shaft 78 through the coupling 77. The double synchronous pulley shaft 78 is connected to the double synchronous pulley 79 through an interference fit. The double synchronous pulley 79 transmits power to the corresponding single pulley A72 and single pulley shaft B90 on both sides through the synchronous belt A75 and the synchronous belt B93. The single pulley A72 is connected to the single pulley shaft A70 on the same side through an interference fit. The single pulley B90 is connected to the single pulley shaft B89 on the same side through an interference fit. The single pulley shaft A70 is supported on the support plate B94 through the bearing F95. On the upper part, the support plate B94 is connected to the base 2 by welding, the single pulley shaft B89 is supported on the support plate A81 through the bearing C80, the support plate A81 and the base 2 are connected by welding, the middle double synchronous pulley shaft 78 is supported on the support plate C99 through the bearing G98, and the support plate C99 and the base 2 are connected by welding, so that the power synchronization mechanism is fixed on the base 2, and the power synchronization mechanism is connected by interference fit with the crank A71 in the crank slider mechanism through the single pulley shaft A70, and the single pulley shaft B89 is connected by interference fit with the crank B88 in the crank slider mechanism, and the synchronized power is transmitted to the two cranks A71 and crank B88.

[0034] The synchronous mechanism, consisting of a coupling, a double synchronous pulley, a synchronous belt, and two single pulleys, transmits power from the reduction motor to the two single pulley shafts. This power is then transferred to the reciprocating linear motion mechanism via a crank connected to the two single pulleys. Both pulleys of the double synchronous pulley 79 use the same pulley specifications, and the transmission ratio on both sides is 1:1, ensuring power synchronization on both sides.

[0035] Oxygen production and assisted breathing methods:

[0036] like Figure 3 As shown, the air inlet 1-1 and the air outlet 1-3 are respectively connected to the air inlet and air outlet hoses, which are connected to the mask. The movement of pistons A10, B11, C20, D35, E39, and F54 causes the exhaled gas of the human body to be continuously inhaled into the reaction device, and the "double breathing" principle is used to improve the reaction efficiency. Solid sodium peroxide is installed in the reaction filter element 38, and the exhaled carbon dioxide is reacted with it to generate oxygen, thereby achieving the purpose of oxygen production. The generated oxygen is discharged through the exhaust hose and the mask to provide oxygen, which can then be used in self-rescue in underground operations to assist human breathing.

[0037] Landfill gas pretreatment methods:

[0038] like Figure 3 As shown, the air inlet 1-1 and the air outlet 1-2 are respectively connected to the exhaust pipe, and the air inlet pipe is connected to the landfill gas collecting pipe. The movement of pistons A10, B11, C20, D35, E39, and F54 causes the mixed gas of the landfill gas to be continuously drawn into the reaction device (adsorption effect). The "double breathing" principle is used to improve the adsorption efficiency. A ethane adsorbent or a carbon dioxide adsorbent is added to the reaction filter element 38. The adsorption effect fully and efficiently adsorbs the useful gas. The remaining impurity gases are discharged through the exhaust pipe to the next treatment link, thereby achieving the purpose of efficient impurity reduction and resource utilization of gas.

[0039] like Figure 2 、 Figure 3 As shown, a reaction filter element 38 is built into the main chamber 1-4. One end of the reaction filter element is connected to the end cap 37 via a slot. The end cap 37 is connected to the flange of the cylinder body 1 by a snap-fit mechanism, i.e., it is cantilevered. The reaction filter element can be manually replaced according to usage by simultaneously removing the reaction filter element 38 and the end cap 37 from the cylinder body 1 for replacement, which is convenient and reliable. The reaction filter element 38 is loaded with an adsorbent, which can be methane or carbon dioxide. A gasket 36 is placed at the interface between the end cap 37 and the cylinder body 1 to provide a seal.

[0040] When the piston moves toward the outside of the cylinder 1, the air pressure inside the cylinder 1 decreases, and gas is sucked in from the air inlet 1-1. The gas flows through the reaction filter element 38, and chemically reacts or is adsorbed with the solid matter in the reaction filter element 38. The gas that does not have time to react is sucked into the piston's abdominal cavity A1-2 and abdominal cavity B1-5. When the piston moves toward the inside of the cylinder 1, the air pressure inside the cylinder 1 increases, and the gas is discharged from the exhaust port 1-3. At the same time, the gas in the piston's abdominal cavity A1-2 and abdominal cavity B1-5 passes through the reaction filter element 38 and reacts again. When the piston performs one reciprocating motion, the gas in the main cavity passes through twice, thereby realizing a process of producing two gas exchanges in one breath, that is, the "double breathing" principle.

[0041] like Figure 8 As shown, the reaction filter element 38 has a three-layer filter structure, consisting of, from the outside in, a primary filter 38-1, an intermediate filter 38-2, and a high-level filter 38-3. The filter density increases gradually from the outside in, gradually improving adsorption accuracy or reaction rate. Solid adsorbents or solid reactants are placed in the core of the high-level filter 38-3, between the high-level filter 38-3 and the intermediate filter 38-2, and between the intermediate filter 38-2 and the primary filter 38-1, increasing the physical and chemical reaction area and improving reaction efficiency.

[0042] This invention combines oxygen production and assisted breathing. It is a compact ventilation device suitable for self-rescue in collapse accidents. As an assisted breathing device in confined spaces, it buys more time for external rescue and reduces casualties. This invention can also be applied to the pretreatment stage of waste gas treatment. By replacing the filter element, it absorbs useful gases and improves the recovery rate of useful gases through the dual breathing principle. For example, it can efficiently collect useful gases—methane and carbon dioxide—from landfill gas in landfills, thereby achieving emission reduction and realizing resource utilization of landfill gas.

[0043] The present invention is not limited to the treatment of landfill gas in landfills, but can also be used for waste gas treatment in other places where waste gas is generated. Structures or devices that use the principles of this device to treat waste gas are also within the scope of protection of this patent.

Claims

1. A ventilation device imitating a bird's respiratory system, characterized in that: The invention comprises a cylinder body (1) fixed on a base (2), wherein the interior of the cylinder body (1) is a cavity, and two groups of abdominal cavities are symmetrically arranged inside the cylinder body (1). The middle cavity inside the cylinder body (1) is a main cavity (1-4), one end of the main cavity (1-4) is connected to an air inlet (1-1), and the other end of the main cavity (1-4) is connected to an exhaust port (1-3). Gas enters the cylinder body through the air inlet (1-1), and the abdominal cavity of the cylinder body cooperates with a piston to achieve gas exchange through piston movement. The gas circulates in the main cavity and each abdominal cavity. Both groups of abdominal cavities cooperate with a power synchronization mechanism, which in turn cooperates with a reciprocating linear motion mechanism and a ventilation mechanism to achieve gas exchange. A reaction filter element is installed in the middle of the main cavity (1-4). The gas enters through the air inlet (1-1) and undergoes a physical and chemical reaction with solids in the reaction filter element, and is then discharged through the exhaust port (1-3). Solid sodium peroxide is added to the reaction filter element (38).

2. The ventilation device imitating the bird's respiratory system according to claim 1, characterized in that: The base (2) is provided with four supports, namely, support A (2-1), support B (2-2), support C (2-3), and support D (2-4). The cylinder body (1) is fixed to the base (2) by respectively cooperating with support A (2-1), support B (2-2), support C (2-3), and support D (2-4) through bolt assembly E (34), bolt assembly (F40), bolt assembly G (96), and bolt assembly H (97).

3. The ventilation device imitating the bird's respiratory system according to claim 1, characterized in that: The two groups of abdominal cavities have the same structure, and each group of abdominal cavities includes three abdominal cavities. The three abdominal cavities A (1-2) are arranged in sequence on one side of the main cavity (1-4), and the three abdominal cavities B (1-5) are arranged in sequence on the other side of the main cavity (1-4). The abdominal cavity A (1-2) and the abdominal cavity B (1-5) are both connected to the main cavity (1-4), and the long axis of the abdominal cavity A (1-2) and the long axis of the abdominal cavity B (1-5) are both perpendicular to the long axis of the main cavity (1-4).

4. The ventilation device imitating the bird's respiratory system according to claim 1, characterized in that: The specific structure of the ventilation mechanism is as follows: a group of abdominal cavities on one side are provided with cylinders B (16), cylinders C (19), and cylinders D (28) in sequence, and a group of abdominal cavities on the other side are provided with cylinders A (5), cylinders E (46), and cylinders F (55) in sequence. Cylinders A (5), cylinders B (16), cylinders C (19), cylinders D (28), cylinders E (46), and cylinders F (55) are respectively embedded in the six abdominal cavities on both sides of the cylinder body through interference fit. The cylinders in each abdominal cavity are axially positioned by the step surface (100) in the abdominal cavity. The six abdominal cavities are designed with The step surface (100) is provided. The corresponding cylinder in each abdominal cavity is embedded from the large hole end of the abdominal cavity. The axial positioning is achieved by the step surface 100 at the hole shoulder. The pistons A (10), B (11), C (20), D (35), E (39), and F (54) are respectively embedded in the cylinders A (5), B (16), C (19), D (28), E (46), and F (55) in a clearance fit manner. The pistons make reciprocating linear motion along the inner wall of the cylinders. The piston rods A (6), F (50), and E (44 ) are connected to piston A (10), piston F (54), and piston E (39) respectively. One end of piston rod B (15), piston rod C (24), and piston rod D (30) are connected to piston B (11), piston C (20), and piston D (35) respectively. The other ends of piston rod A (6), piston rod F (50), and piston rod E (44) are fixedly connected to the connecting plate A (4) on the corresponding side through nuts A (3), nuts F (48), and nuts E (45). The connecting plate A (4) is fixedly connected to the connecting plate A (4) by bolt assembly C (47), bolt assembly D (5 3) It is fixedly connected to the bearing seat A (58) on the same side. The other ends of the piston rods B (15), C (24) and D (30) are fixedly connected to the connecting plate B (17) on the same side through nuts B (18), C (26) and D (29). The connecting plate B (17) is fixedly connected to the bearing seat B (61) on the same side through bolt assembly A (21) and bolt assembly B (27). The upper and lower connecting rods A (59) and the inner hole of the bearing seat A (58) are transitionally matched. The upper and lower connecting rods B (60) and the inner hole of the bearing seat B (61) are transitionally matched.

5. The ventilation device imitating the bird's respiratory system according to claim 4, characterized in that: The piston A (10), piston F (54), and piston E (39) are respectively provided with a piston pin A (8), a piston pin F (51), and a piston pin E (42). The piston pin A (8), the piston pin F (51), and the piston pin E (42) are respectively connected to the piston rod A (6), the piston rod F (50), and the piston rod E (44) via corresponding fisheye bearings A (7), fisheye bearings F (52), and fisheye bearings E (43). The piston B (11), piston C (20), and piston D (35) are provided with a piston pin B (13), a piston pin C (23), and a piston pin D (32), respectively. The piston pin B (13), piston pin C (23), and piston pin D (32) are connected to the piston rod B (15), piston rod C (24), and piston rod D (30) respectively through the corresponding fisheye bearing B (14), fisheye bearing C (22), and fisheye bearing D (31).

6. The ventilation device imitating the bird's respiratory system according to claim 1, characterized in that: The reciprocating linear motion mechanism adopts a crank slider mechanism to realize motion conversion. The two crank slider mechanisms are distributed on the left and right sides of the cylinder body. The specific structure is as follows: the crank slider mechanism on one side includes a crank A (71), the crank A (71) and one end of the connecting rod A (69) are connected through an axle pin B (73), a bearing B (74) is provided between the axle pin B (73) and the connecting rod A (69), and the other end of the connecting rod A (69) is connected to the slider structure A through an axle pin A (67); the crank slider mechanism on the other side includes a crank B (88), the crank B (88) and one end of the connecting rod B (87) are connected through an axle pin D (92), a bearing E (91) is provided between the axle pin D (92) and the connecting rod B (87), and the other end of the connecting rod B (87) is connected to the slider structure B through an axle pin C (86).

7. The ventilation device imitating the bird's respiratory system according to claim 6, characterized in that: The slider structure A includes a slider platform A (66) connected to an axle pin A (67), a connecting rod A (69) and the slider platform A (66) are connected by the axle pin A (67) and the bearing A (68), the slider platform A (66) and the slider A (65) are bonded together, a linear guide rail A (64) is provided at the bottom of the slider A (65), the linear guide rail A (64) is connected to the vertical plate A (56) by a screw A (57), and the slider platform A (66) is connected to the ventilation mechanism; The slider structure B includes a slider platform B (84) connected to an axle pin C (86), a connecting rod B (87) and the slider platform B (84) are connected by the axle pin C (86) and the bearing D (85), the slider platform B (84) and the slider B (83) are bonded together, a linear guide rail B (82) is provided at the bottom of the slider B (83), the linear guide rail B (82) is connected to the vertical plate B (63) by a screw B (62), and the slider platform B (84) is connected to the ventilation mechanism.

8. The ventilation device imitating the bird's respiratory system according to claim 1, characterized in that: The specific structure of the power synchronization mechanism is as follows: the reduction motor (76) is connected to the double synchronous pulley shaft (78) by a coupling (77), the reduction motor (76) is used as a driving member, the double synchronous pulley shaft (78) and the double synchronous pulley (79) are connected by interference fit, the double synchronous pulley (79) transmits power to the corresponding single pulley A (72) and single pulley shaft B (89) on both sides through a synchronous belt A (75) and a synchronous belt B (93), the single pulley A (72) and the single pulley shaft A (70) on the same side are connected by interference fit, the single pulley B (90) and the single pulley shaft B (89) on the same side are connected by interference fit, Through interference fit connection, the single pulley shaft A (70) is supported on the support plate B (94) through the bearing F (95), the support plate B (94) and the base (2) are connected by welding, the single pulley shaft B (89) is supported on the support plate A (81) through the bearing C (80), the support plate A (81) and the base (2) are connected by welding, the middle double synchronous pulley shaft (78) is supported on the support plate C (99) through the bearing G (98), the support plate C (99) and the base (2) are connected by welding, and the single pulley shaft A (70) and the single pulley shaft B (89) are connected to the reciprocating linear motion mechanism.

9. The ventilation device imitating the bird's respiratory system according to claim 1, characterized in that: A reaction filter element (38) is built into the main cavity (1-4), one end of the reaction filter element is connected to the end cover (37) through a slot, the end cover (37) is connected to the flange of the cylinder body (1) by a snap-fit method, a gasket (36) is provided at the joint surface between the end cover (37) and the cylinder body (1), and an adsorbent is added to the reaction filter element (38).

10. The ventilation device imitating the bird's respiratory system according to claim 9, characterized in that: The reaction filter element (38) is a three-layer filter screen structure, which comprises a primary filter screen (38-1), an intermediate filter screen (38-2), and a high-level filter screen (38-3) from the outside to the inside. Solid adsorbents or solid reactants are placed in the core of the high-level filter screen (38-3), the interlayer between the high-level filter screen (38-3) and the intermediate filter screen (38-2), and the interlayer between the intermediate filter screen (38-2) and the primary filter screen (38-1).

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