Fresh air purification device for shelter hospital

Abstract

The invention discloses a shelter hospital fresh air purification device which comprises a fresh air device arranged on a shelter body, an air inlet pipeline and an air inlet nozzle are arranged at the air inlet end of the fresh air device, a headwind structure for adjusting the orientation of the air inlet nozzle according to the air direction is arranged on the shelter body, the headwind structure comprises a comb-shaped frame, and an air rod swinging according to wind power is arranged on the comb-shaped frame. A hollow rod is arranged on the comb-shaped frame, a wind swing assembly for adjusting the orientation of the hollow rod is arranged on the comb-shaped frame, the orientation of the air inlet nozzle is automatically changed under the action of wind power by arranging the upwind structure, when the orientation of the air inlet nozzle is consistent with the wind direction, the wind power pushing direction of particles carried in airflow is not completely the same as the suction force direction of the fan, and therefore the air inlet nozzle is prevented from being blocked. When the particulate matter enters the air inlet pipeline, the inertia of outward flowing of the particulate matter and the thrust of air must be overcome, and the difficulty that the particulate matter is directly sucked into the air inlet pipeline is increased in the process, so that the situation that large particulate matter enters the pipeline is reduced from the source, and the burden of a filter in the fresh air device is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air devices, and in particular to a fresh air purification device for a square cabin hospital. Background Art

[0002] With the high incidence of public health safety incidents and infectious diseases, the role of Fangcang shelter hospitals in emergency medical support has become increasingly prominent. As a temporary medical facility that can be quickly built, Fangcang shelter hospitals usually have the characteristics of complex spatial environment, high patient density, and limited medical isolation conditions. Due to their closed or semi-closed structures, a large number of patients inside, and poor air circulation, ensuring the air quality in Fangcang shelter hospitals has become an important part of preventing nosocomial cross-infection, improving patient comfort, and accelerating the recovery process.

[0003] Chinese patent (Announcement No.: CN119085070A), the scheme specifically includes a medical purifier; an air inlet, which is opened at one end of the medical purifier; an exhaust port, which is opened at the top of the medical purifier; and a filter assembly, which is arranged in the inner cavity of the medical purifier. The above technical scheme sets a cleaning brush and a first active bevel gear, and by starting the driving motor, the driving shaft can drive the first active bevel gear to rotate. At this time, the first active bevel gear and the first driven bevel gear are meshed, thereby smoothly driving the first driven bevel gear to rotate, so that the synchronous belt moves as a whole, so as to drive multiple cleaning brushes to rotate. Finally, the brush surface on the outside of the cleaning brush can rotate and clean the dust particle filter screen, sweeping down the dust particles, which can well avoid dust clogging, not only improving the filtering effect but also making the operation method extremely convenient and quick.

[0004] When the air purification device in the above patent is in use, the air intake end of the existing air is usually unchanged. When the natural air from the outside is purified and introduced into the cabin hospital through the fresh air device, the cabin hospital is usually built quickly under emergency conditions. The site selection and surrounding environment are relatively diverse, and the external natural wind direction and airflow conditions are difficult to predict and stabilize. When the external wind direction changes, but the air intake end still maintains the same direction, since the airflow direction does not match the air inlet of the equipment, the fresh air device may find it difficult to fully utilize the natural wind force to push the fresh air in, thereby reducing the ventilation efficiency.

[0005] At the same time, in the case of headwind inhalation, the fan in the fresh air device may require additional power consumption to overcome the air intake resistance to ensure the stability of the fresh air flow, which will not only increase energy consumption, but also increase the operating load and maintenance cost of the equipment. At the same time, in the case of withwind inhalation, that is, when the gas intake direction of the fresh air device is the same as the direction, the suspended particles in the air are more likely to be directly sucked into the air inlet duct, increasing the burden on the filter device, and thus increasing the maintenance and replacement frequency of the filter device. Therefore, a fresh air purification device for square cabin hospitals is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a fresh air purification device for a square cabin hospital, which has the advantages of reducing the burden of the filtering device and ensuring the stability of the fresh air flow rate, thereby solving the problems of increasing the burden of the filtering device and the possible instability of the fresh air flow rate.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a fresh air purification device for a square cabin hospital, comprising a fresh air device arranged on a cabin body, an air inlet duct and an air inlet nozzle are arranged at the air inlet end of the fresh air device, and a reverse wind structure for adjusting the direction of the air inlet nozzle according to the wind direction is arranged on the cabin body;

[0008] The upwind structure comprises a comb-shaped frame fixedly connected to the outer surface of the cabin, the comb-shaped frame is provided with a wind rod that swings according to the wind force, a transverse axis is coaxially fixed on the wind rod, the transverse axis is fixedly rotated on the cabin, the comb-shaped frame is provided with a hollow rod for supporting and fixing the air inlet nozzle, and the comb-shaped frame is provided with a wind swing assembly for adjusting the direction of the hollow rod;

[0009] The air inlet duct is fixedly provided with a purification cylinder and a hollow air return cylinder, and the hollow air return cylinder is provided with an air replenishing component for maintaining the air intake volume of the air inlet duct when the air is taken in against the wind;

[0010] The purification cylinder is composed of two groups of detachably connected sealing cylinders, the sealing cylinder is fixedly connected to the air inlet duct, a filter plate for intercepting incoming debris is arranged in the purification cylinder, and a shock component for preventing the filter plate from being blocked is arranged on the cabin.

[0011] Preferably, the wind swing assembly comprises a plurality of groups of corrugated wind plates fixedly connected to the wind rod, a rectangular block is provided on the wind rod, and a rectangular slide groove for sliding connection of the rectangular block is provided on the wind rod, a positioning pin is provided on the rectangular block for fixed axis rotation, the positioning pin is fixedly connected to the hollow rod, and a horizontal groove for sliding connection of the positioning pin is provided on the comb-shaped frame;

[0012] A swing pin is fixedly connected to a side of the hollow rod away from the positioning pin, and a swing groove for sliding connection of the swing pin is provided on the comb-shaped frame, and the swing groove includes an integrally formed V-shaped groove portion.

[0013] Preferably, the air inlet nozzle is vertically downward in an initial state, a ventilation hose is fixedly passed through the air inlet nozzle, and one end of the ventilation hose away from the air inlet nozzle is fixedly passed through the air inlet duct.

[0014] Preferably, the air replenishing component comprises an inner disk which is rotated on the inner wall of the hollow air return cylinder with a fixed axis, the inner disk is freely rotated in the vertical direction, a plurality of groups of triangular cone seats arranged in a circular array are provided on the inner disk, a wind passage for air circulation is formed between the plurality of groups of triangular cone seats, and a groove body 1 for sliding connection of the triangular cone seats is provided on the inner disk;

[0015] The triangular cone seat is in sliding contact with the inner wall of the hollow air return cylinder, a limit pin is fixedly connected to the triangular cone seat, and a limit groove for the limit pin to be slidably connected is provided on the hollow air return cylinder;

[0016] The triangular cone seat is provided with an air return component for replenishing air to the air passage.

[0017] Preferably, the air return assembly comprises a conical hole and a narrow-diameter hole provided on a triangular cone seat, the conical hole and the narrow-diameter hole are gas-connected, the diameter of the conical hole is larger than the diameter of the narrow-diameter hole, and the triangular cone seat is provided with a plurality of groups of Venturi holes gas-connected with the narrow-diameter holes;

[0018] The outer ring of the hollow air return cylinder is fixedly connected with a connecting pipe, and the two ends of the connecting pipe are respectively in gas communication with multiple groups of Venturi holes and the outside air.

[0019] Preferably, a mounting frame is fixedly connected to the cabin, the transverse axis is fixedly rotated on the mounting frame, a coincidence disk is coaxially fixed on the transverse axis, and a connecting rod is fixedly rotated on the coincidence disk;

[0020] The outer peripheral surface of the inner position disk is fixedly connected with an axial rod, and the hollow air return cylinder is provided with an arc-shaped through groove for the axial rod to slide through, and one end of the connecting rod away from the same position disk is fixedly rotated on the axial rod.

[0021] Preferably, the shock assembly comprises an inner clamping ring arranged between the two sets of sealing tubes, the inner clamping ring is fixedly connected to the two sets of sealing tubes by bolts, and the filter plate is fixedly connected to the inner wall of the inner clamping ring;

[0022] A plurality of groups of rubber balls for striking the inner clamping ring are arranged above the inner clamping ring.

[0023] Preferably, a special-shaped disk is coaxially fixed on the transverse axis, multiple groups of rubber balls are arranged in a ring array on the special-shaped disk, a centrifugal spring is fixedly connected to the rubber ball, and one end of the centrifugal spring away from the rubber ball is fixedly connected to the outer circumferential surface of the special-shaped disk.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention automatically changes the direction of the air inlet nozzle under the action of wind force by setting a counterwind structure to avoid the air inlet nozzle facing the wind directly. When the direction of the air inlet nozzle is consistent with the wind direction, the wind force pushing direction of the particles carried in the airflow is not exactly the same as the suction direction of the fan. The particles must overcome their own inertia of flowing outward and the thrust of the wind to enter the air inlet duct. This process increases the difficulty of the particles being directly sucked into the air inlet duct, thereby reducing the large particles entering the duct at the source and reducing the burden on the filter.

[0026] 2. The present invention provides an air replenishing component, and an inner plate, a triangular cone seat and a Venturi hole are arranged in the hollow air return cylinder. By changing the flow position of the wind channel and the conical hole, the Venturi effect is used to produce an air replenishing effect under headwind conditions. When the headwind intake causes the increase of intake resistance, the air replenishing component can maintain a higher air intake volume without increasing the power consumption of the fan, thereby reducing the load and maintenance cost of the equipment running under headwind conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the components of the hollow air return cylinder of the present invention;

[0029] Figure 3 This is a schematic diagram of the components where the co-location disk of the present invention is located;

[0030] Figure 4 It is a schematic diagram of the components of the comb frame of the present invention;

[0031] Figure 5 This is a schematic diagram of the components where the hollow rod of the present invention is located;

[0032] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0033] Figure 7 It is a schematic diagram of the components where the connecting rod of the present invention is located;

[0034] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0035] Fig. 9 This is a schematic diagram of the components where the triangular pyramid seat of the present invention is located;

[0036] Fig.10 This is a schematic diagram of the components where the Venturi hole of the present invention is located;

[0037] Fig.11 It is a schematic diagram of the components where the special-shaped disk of the present invention is located.

[0038] In the figure: 1. cabin; 2. fresh air device; 3. air inlet; 4. wind rod; 5. corrugated wind plate; 6. transverse axis; 7. comb frame; 8. hollow rod; 9. swing pin; 10. swing groove; 11. V-shaped groove; 12. positioning pin; 13. rectangular block; 14. ventilation hose; 15. air inlet duct; 16. mounting frame; 17. isotropic disk; 18. connecting rod; 19. axial rod; 20. arc-shaped through groove; 21. hollow return air cylinder; 22. inner disk; 23. triangular cone seat; 24. limiting pin; 25. limiting groove; 26. conical hole; 27. narrow diameter hole; 28. venturi hole; 29. ​​connecting pipe; 30. sealing cylinder; 31. inner clamp ring; 32. filter plate; 33. special-shaped disk; 34. centrifugal spring; 35. rubber ball; 36. horizontal groove; 37. air passage. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 11 The present invention provides a technical solution: a fresh air purification device for a square cabin hospital, comprising a fresh air device 2 arranged on a cabin body 1, an air inlet duct 15 and an air inlet nozzle 3 are arranged at the air inlet end of the fresh air device 2, and a headwind structure for adjusting the direction of the air inlet nozzle 3 according to the wind direction is arranged on the cabin body 1;

[0041] The upwind structure comprises a comb-shaped frame 7 fixedly connected to the outer surface of the cabin 1, the comb-shaped frame 7 is provided with a wind rod 4 that swings according to the wind force, the wind rod 4 is coaxially fixed with a transverse shaft 6, the transverse shaft 6 is fixedly rotated on the cabin 1, the comb-shaped frame 7 is provided with a hollow rod 8 for supporting and fixing the air inlet nozzle 3, and the comb-shaped frame 7 is provided with a wind swing assembly for adjusting the direction of the hollow rod 8;

[0042] The air inlet duct 15 is fixedly provided with a purification cylinder and a hollow air return cylinder 21, and the hollow air return cylinder 21 is provided with an air replenishing component for maintaining the air intake volume of the air inlet duct 15 when the air is taken in against the wind;

[0043] The purification cylinder is composed of two groups of detachably connected sealing cylinders 30, which are fixedly connected to the air inlet duct 15. A filter plate 32 for intercepting incoming debris is provided in the purification cylinder, and a shock component is provided on the cabin 1 to prevent the filter plate 32 from being blocked.

[0044] like Figure 1-Figure 3As shown, the square cabin hospital is usually built quickly under emergency conditions, and the site selection and surrounding environment are relatively diverse. The external natural wind direction and airflow conditions are difficult to predict and stabilize. When the wind direction of the external natural air changes, the wind pendulum component can change the direction of the hollow rod 8 and then change the direction of the air inlet 3, thereby avoiding the air inlet 3 from corresponding to the wind direction, and then making the direction of the hollow rod 8 and the air inlet 3 consistent with the wind direction.

[0045] At the same time, the wind swing assembly can make the direction of the hollow rod 8 consistent with the wind direction. If the wind direction and the air inlet nozzle 3 are both facing the left, under the action of the external wind force, the particles in the air are driven to move to the left, and the air inlet nozzle 3 is also facing the left. Under the action of the fan in the fresh air device 2, a suction force to the right can be applied to the outside air. This suction force needs to resist the driving force of the particles moving to the left before it can be sucked into the air inlet duct 15 through the air inlet nozzle 3. Therefore, by changing the direction of the air inlet nozzle 3, suspended particles can be prevented from being directly sucked into the air inlet duct 15, thereby reducing the burden on the filter device in the fresh air device 2 and reducing the maintenance and replacement frequency of the filter device.

[0046] Among them, when the air inlet nozzle 3 is in the same direction as the wind direction, the suction force generated by its fan needs to resist the external wind force. Therefore, in the case of headwind suction, the fan in the fresh air device 2 may require additional power consumption to overcome the wind intake resistance. Therefore, through the air supply component, it is possible to compensate for the pressure resistance caused by the headwind suction of the air inlet duct 15 in the case of headwind suction, thereby maintaining a higher air intake volume, so as to ensure that when the fan power consumption remains unchanged, a relatively stable air intake volume can be maintained, thereby reducing the operating load and maintenance cost of the equipment caused by headwind suction.

[0047] At the same time, a purification cylinder consisting of two groups of sealing cylinders 30 is provided on the air inlet duct 15, and a filter plate 32 for intercepting impurities and larger particles in the air is provided in the purification cylinder. Through the shock component, a knocking force can be applied to the filter plate 32 when the natural wind direction in the outside world changes, thereby preventing debris or particles from clogging the filter plate 32, thereby ensuring the initial purification process of the gas, so as to ensure that the outside air can smoothly pass through the sealing cylinder 30 into the fresh air device 2, and at the same time, it can also ensure that the air is not subject to additional resistance when circulating in the air inlet duct 15, so as to further ensure the air intake volume of the fresh air device 2.

[0048] In one of the more preferred embodiments, the wind swing assembly includes a plurality of groups of corrugated wind plates 5 fixedly connected to the wind rod 4, a rectangular block 13 is provided on the wind rod 4, and a rectangular slide groove for sliding connection of the rectangular block 13 is provided on the wind rod 4, a positioning pin 12 is fixedly rotated on the rectangular block 13, the positioning pin 12 is fixedly connected to the hollow rod 8, and a horizontal groove 36 for sliding connection of the positioning pin 12 is provided on the comb frame 7;

[0049] A swing pin 9 is fixedly connected to a side of the hollow rod 8 away from the positioning pin 12 , and a swing groove 10 for sliding connection of the swing pin 9 is provided on the comb frame 7 , and the swing groove 10 includes an integrally formed V-shaped groove portion 11 .

[0050] The air inlet nozzle 3 is vertically downward in an initial state, and a ventilation hose 14 is fixedly passed through the air inlet nozzle 3 , and one end of the ventilation hose 14 away from the air inlet nozzle 3 is fixedly passed through the air inlet duct 15 .

[0051] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, a plurality of groups of corrugated wind plates 5 are provided on the wind rod 4. When the corrugated wind plates 5 are subjected to the action of external wind force, they can swing in the vertical direction under the action of the wind force, thereby driving the transverse axis 6 coaxial with the wind rod 4 to rotate in the vertical direction. At the same time, when the transverse axis 6 swings, it can change the horizontal position of the positioning pin 12 through the rectangular block 13 thereon, thereby driving the positioning pin 12 to slide on the horizontal groove 36.

[0052] In addition, the positioning pin 12 is fixedly set on the hollow rod 8, and the swing pin 9 fixedly set on the hollow rod 8 is slidably connected to the comb frame 7 through the swing groove 10, wherein the air inlet nozzle 3 is vertically oriented in the initial state, and the swing pin 9 is at the middle position of the V-shaped groove 11 at this time. When the wind rod 4 swings under the action of wind force, its swing pin 9 first slides on the V-shaped groove 11, thereby changing the orientation of the hollow rod 8 and the air inlet nozzle 3 fixed thereon, so that the orientation of the air inlet nozzle 3 is consistent with the wind direction.

[0053] It should be noted that a torsion spring is provided on the cabin 1 to drive the transverse axis 6 and the wind rod 4 to return to their initial positions, wherein the wind rod 4 is in a vertical orientation consistent with the air inlet nozzle 3 in the initial position. The torsion spring is an existing device and a technical means well known to those skilled in the art, so it is not shown in the figure. Therefore, under the action of the torsion spring, when not affected by external wind factors, the air inlet nozzle 3 can always face downward.

[0054] On the basis of the wind pendulum assembly embodiment, the air supply assembly includes an inner disk 22 that rotates on the inner wall of the hollow air return cylinder 21 with a fixed axis, and the inner disk 22 rotates freely in the vertical direction. The inner disk 22 is provided with a plurality of groups of triangular cone seats 23 arranged in a circular array, and a wind passage 37 for air circulation is formed between the plurality of groups of triangular cone seats 23. The inner disk 22 is provided with a slot body 1 for sliding connection of the triangular cone seats 23;

[0055] The triangular cone seat 23 is in sliding contact with the inner wall of the hollow air return cylinder 21, a limit pin 24 is fixedly connected to the triangular cone seat 23, and a limit groove 25 for the limit pin 24 to be slidably connected is provided on the hollow air return cylinder 21;

[0056] The triangular cone seat 23 is provided with an air return assembly for replenishing air to the air passage 37 .

[0057] The air return assembly includes a conical hole 26 and a narrow diameter hole 27 provided on the triangular cone seat 23, the conical hole 26 and the narrow diameter hole 27 are gas-connected, the diameter of the conical hole 26 is larger than the diameter of the narrow diameter hole 27, and the triangular cone seat 23 is provided with a plurality of groups of venturi holes 28 gas-connected with the narrow diameter hole 27;

[0058] The outer ring of the hollow air return cylinder 21 is fixedly connected with a connecting pipe 29, and both ends of the connecting pipe 29 are respectively connected to the gas between the multiple groups of Venturi holes 28 and the outside air.

[0059] like Figure 2 , Figure 3 , Figure 8 , Fig. 9 and Fig.10 As shown, external natural air enters the air inlet duct 15 through the air inlet nozzle 3 and the ventilation hose 14, wherein the gas can flow in the narrow diameter hole 27 composed of multiple groups of triangular cone seats 23 when passing through the position of the hollow return air cylinder 21, and when the wind rod 4 swings due to wind factors, it can drive the inner disk 22 to rotate in the hollow return air cylinder 21, and then drive multiple groups of air passages 37 to slide on the inner disk 22, wherein the limit pin 24 fixed on the inner disk 22 is slidably connected to the hollow return air cylinder 21 through the limit groove 25, and the triangular cone seat 23 is slidably connected to the inner disk 22 through the groove body, therefore, when the inner disk 22 rotates, it can drive multiple groups of triangular cone seats 23 to deflect synchronously to change the position of the conical hole 26 thereon.

[0060] It should be noted that the conical holes 26 correspond to the side walls of the hollow air return cylinder 21 in the initial state, so outside air can only circulate in the air passage 37. However, as the inner disk 22 rotates, the cross-sectional size of the air passage 37 will become smaller, but the gas can circulate in multiple groups of conical holes 26, so the overall flow area of ​​the gas will not be reduced.

[0061] Furthermore, when air flows through the tapered hole 26 and the narrow-diameter hole 27, since the diameter of the narrow-diameter hole 27 is smaller than that of the tapered hole 26, according to the Venturi effect, the Venturi effect is expressed as follows: when the fluid passes through a tightened channel, the flow velocity will increase, and its size is inversely proportional to the cross-section of the tightening point. Therefore, when the gas passes through the narrow-diameter hole 27, the flow velocity at the narrow-diameter hole 27 will increase. According to the Bernoulli effect, low pressure will be generated near the highly flowing fluid. Therefore, low pressure will be generated at the narrow-diameter hole 27, and the generated low pressure will be compensated by the Venturi hole 28. Therefore, when the gas continues to flow through the tapered hole 26, the low pressure phenomenon at the narrow-diameter hole 27 is continuously alleviated through multiple groups of Venturi holes 28.

[0062] At the same time, the Venturi hole 28 is connected to the outside air through the connecting pipe 29. Therefore, when low pressure occurs at the narrow-diameter hole 27, it can be relieved by the outside air, and then the outside air enters the narrow-diameter hole 27 through the connecting pipe 29 and the Venturi hole 28, thereby increasing the flow path between the cabin 1 and the outside air to compensate for the pressure resistance caused by the headwind suction of the air inlet pipe 15, thereby maintaining a higher air intake volume, so that when the power consumption of the fan in the fresh air device 2 remains unchanged, a relatively stable air intake volume can be maintained, thereby reducing the operating load and maintenance cost of the equipment caused by headwind suction.

[0063] Furthermore, a mounting frame 16 is fixedly connected to the cabin 1, the transverse shaft 6 is fixedly rotated on the mounting frame 16, a coaxial disk 17 is coaxially fixed on the transverse shaft 6, and a connecting rod 18 is fixedly rotated on the coaxial disk 17;

[0064] The outer circumference of the inner disk 22 is fixedly connected with the axial rod 19 , and the hollow return air cylinder 21 is provided with an arc-shaped through groove 20 for the axial rod 19 to slide through, and the end of the connecting rod 18 away from the same disk 17 is fixedly rotated on the axial rod 19 .

[0065] like Figure 3 , Figure 7 and Fig. 9 As shown, when the transverse shaft 6 rotates following the wind rod 4, it can drive the isotropic disk 17 coaxially fixed thereon to rotate synchronously, wherein a freely deflectable connecting rod 18 is provided between the isotropic disk 17 and the axial rod 19. Therefore, when the isotropic disk 17 rotates, the axial rod 19 and the inner disk 22 provided on the axial rod 19 can be driven to rotate through the connecting rod 18, thereby changing the relative positions of the multiple groups of conical holes 26, so that air can flow through the conical holes 26.

[0066] It should be noted that when the wind rod 4 is in the initial state, the swing direction of its connecting rod 18 is in the same straight line with the center of the circle of the isotropic disk 17. Therefore, no matter in which direction the wind rod 4 is deflected under the action of wind, the rotation process of its isotropic disk 17 drives the axial rod 19 to rotate in one direction. Therefore, no matter how the natural wind direction changes, the rotation direction of the axial rod 19 and the inner disk 22 remains unchanged, so that air can flow in the conical hole 26 when the direction changes in different directions.

[0067] Based on the air supply assembly embodiment, the shock assembly includes an inner clamping ring 31 disposed between two sets of sealing tubes 30, the inner clamping ring 31 is fixedly connected to the two sets of sealing tubes 30 by bolts, and the filter plate 32 is fixedly connected to the inner wall of the inner clamping ring 31;

[0068] A plurality of groups of rubber balls 35 for striking the inner clamping ring 31 are disposed above the inner clamping ring 31 .

[0069] A special-shaped disk 33 is coaxially fixed on the transverse shaft 6 , and multiple groups of rubber balls 35 are arranged in a ring array on the special-shaped disk 33 . A centrifugal spring 34 is fixedly connected to the rubber ball 35 , and one end of the centrifugal spring 34 away from the rubber ball 35 is fixedly connected to the outer peripheral surface of the special-shaped disk 33 .

[0070] like Figure 2 , Figure 3 and Fig.11 As shown, when the external wind force drives the wind rod 4 and the horizontal axis 6 to rotate in the vertical direction, it can drive the special-shaped disk 33 coaxially arranged with the horizontal axis 6 to rotate. When the special-shaped disk 33 rotates, it can drive the multiple groups of centrifugal springs 34 and rubber balls 35 arranged thereon to rotate synchronously, and when the centrifugal spring 34 rotates, it can deform under the action of centrifugal force, and then knock on the inner clamping ring 31 on one side. Through the knocking process, the filter plate 32 can vibrate slightly to drive the debris or particulate matter attached thereto to be shaken off, so as to ensure the interception effect of debris while avoiding the debris clogging the filter plate 32 and causing additional gas flow resistance.

[0071] It should be noted that when maintaining or replacing the filter plate 32, the two sets of sealing cylinders 30 can be removed from the air inlet duct 15, so that the inner clamping ring 31 and the filter plate 32 can be removed from between the two sets of sealing cylinders 30 to facilitate subsequent maintenance work. In addition, a sealing rubber pad can be arranged between the inner clamping ring 31 and the sealing cylinder 30 to ensure the air tightness of the purification cylinder.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fresh air purification device for a cabin hospital, comprising a fresh air device (2) arranged on a cabin body (1), an air inlet duct (15) and an air inlet nozzle (3) being arranged at an air inlet end of the fresh air device (2), characterized in that: The cabin (1) is provided with a headwind structure for adjusting the direction of the air inlet nozzle (3) according to the wind direction; The headwind structure comprises a comb-shaped frame (7) fixedly connected to the outer surface of the cabin (1), a wind rod (4) swinging according to the wind force is arranged on the comb-shaped frame (7), a transverse shaft (6) is coaxially fixed on the wind rod (4), the transverse shaft (6) is fixedly rotated on the cabin (1), a hollow rod (8) for supporting and fixing the air inlet nozzle (3) is arranged on the comb-shaped frame (7), and a wind swing assembly for adjusting the direction of the hollow rod (8) is arranged on the comb-shaped frame (7); The air inlet duct (15) is fixedly provided with a purification cylinder and a hollow air return cylinder (21) extending therethrough, and the hollow air return cylinder (21) is provided with an air replenishing component for maintaining the air intake volume of the air inlet duct (15) when air is taken in against the wind; The purification cylinder is composed of two groups of detachably connected sealing cylinders (30), the sealing cylinder (30) and the air inlet duct (15) are fixedly connected, a filter plate (32) for intercepting incoming air debris is provided in the purification cylinder, and a shock component for preventing the filter plate (32) from being blocked is provided on the cabin (1).

2. A fresh air purification device for a square cabin hospital according to claim 1, characterized in that: The wind pendulum assembly comprises a plurality of groups of corrugated wind plates (5) fixedly connected to a wind rod (4); a rectangular block (13) is provided on the wind rod (4); a rectangular slide groove for sliding connection of the rectangular block (13) is provided on the wind rod (4); a positioning pin (12) is provided on the rectangular block (13) for fixed axis rotation; the positioning pin (12) is fixedly connected to a hollow rod (8); and a horizontal groove (36) for sliding connection of the positioning pin (12) is provided on the comb-shaped frame (7); A swing pin (9) is fixedly connected to a side of the hollow rod (8) away from the positioning pin (12), and a swing groove (10) for sliding connection of the swing pin (9) is provided on the comb-shaped frame (7), and the swing groove (10) includes an integrally formed V-shaped groove portion (11).

3. A fresh air purification device for a square cabin hospital according to claim 2, characterized in that: The air inlet nozzle (3) is vertically downward in an initial state, a ventilation hose (14) is fixedly passed through the air inlet nozzle (3), and one end of the ventilation hose (14) away from the air inlet nozzle (3) is fixedly passed through the air inlet duct (15).

4. A fresh air purification device for a square cabin hospital according to claim 3, characterized in that: The air replenishing assembly comprises an inner disk (22) which is fixedly rotated on the inner wall of a hollow air return cylinder (21), the inner disk (22) being freely rotated in a vertical direction, a plurality of groups of triangular cone seats (23) arranged in a circular array being provided on the inner disk (22), an air passage (37) for air circulation being formed between the plurality of groups of triangular cone seats (23), and a groove body 1 for sliding connection of the triangular cone seats (23) being provided on the inner disk (22); The triangular cone seat (23) is in sliding contact with the inner wall of the hollow air return cylinder (21); a limit pin (24) is fixedly connected to the triangular cone seat (23); and a limit groove (25) for the limit pin (24) to be slidably connected is provided on the hollow air return cylinder (21); The triangular cone seat (23) is provided with an air return assembly for replenishing air to the air passage (37).

5. A fresh air purification device for a square cabin hospital according to claim 4, characterized in that: The air return assembly comprises a conical hole (26) and a narrow diameter hole (27) provided on a triangular cone seat (23); the conical hole (26) and the narrow diameter hole (27) are gas-connected; the diameter of the conical hole (26) is larger than the diameter of the narrow diameter hole (27); and the triangular cone seat (23) is provided with a plurality of groups of venturi holes (28) which are gas-connected with the narrow diameter hole (27); The outer ring of the hollow air return cylinder (21) is fixedly connected with a connecting pipe (29), and the two ends of the connecting pipe (29) are respectively in gas communication with a plurality of groups of Venturi holes (28) and the outside air.

6. A fresh air purification device for a square cabin hospital according to claim 5, characterized in that: The cabin (1) is fixedly connected with a mounting frame (16), the transverse shaft (6) is fixedly rotatable on the mounting frame (16), a coaxially fixed aligning plate (17) is coaxially fixed on the transverse shaft (6), and a connecting rod (18) is fixedly rotatable on the coaxially fixed aligning plate (17); The outer peripheral surface of the inner position disk (22) is fixedly connected with an axial rod (19), and the hollow air return cylinder (21) is provided with an arc-shaped through groove (20) for the axial rod (19) to slide through, and one end of the connecting rod (18) away from the same position disk (17) is fixedly rotated on the axial rod (19).

7. A fresh air purification device for a square cabin hospital according to claim 6, characterized in that: The shock assembly comprises an inner clamping ring (31) arranged between two groups of sealing tubes (30), the inner clamping ring (31) being fixedly connected to the two groups of sealing tubes (30) by bolts, and the filter plate (32) being fixedly connected to the inner wall of the inner clamping ring (31); A plurality of groups of rubber balls (35) for striking the inner clamping ring (31) are arranged above the inner clamping ring (31).

8. A fresh air purification device for a square cabin hospital according to claim 7, characterized in that: A special-shaped disk (33) is coaxially fixed on the transverse shaft (6), a plurality of groups of rubber balls (35) are arranged in an annular array on the special-shaped disk (33), a centrifugal spring (34) is fixedly connected to the rubber ball (35), and one end of the centrifugal spring (34) away from the rubber ball (35) is fixedly connected to the outer peripheral surface of the special-shaped disk (33).

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