A fresh air ventilation device for operating room

Abstract

The present invention belongs to the field of ventilation technology for operating rooms, and specifically is a fresh air ventilation device for operating rooms, including an air duct and an air suction head fixedly installed on the surface of one end of the air duct, a positioning support frame detachably installed on the outer surfaces of the air duct and the air suction head, an exhaust pipe fixedly installed on the outer surface of the other end of the air duct, and a switch closing unit fixedly installed on the inner wall surface of the air suction head, and the switch closing unit includes limit rings symmetrically fixedly connected to the inner wall surfaces on both sides of the air suction head. The present invention utilizes a small motor to rotate so as to pull the pulling strip on the outer surface of the output end of the small motor toward the inner deep direction of the air duct, so that the pulling strip is wrapped around the surface of the output end of the small motor, and under the pulling of the pulling strip, the surfaces on both sides of the closing plate are limited by the limit ring, and the closing plate is expanded and swung toward the outside with the limit ring as the center point, so that the closing plate is peeled off from the surface of the baffle plate.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation in operating rooms, in particular to a fresh air ventilation device for operating rooms. Background Art

[0002] As a special space for performing surgery, the operating room needs to maintain a sterile environment to ensure that the surgical patients are not infected. Therefore, the air environment in the operating room must be systematically controlled, which is generally implemented through fresh air disinfection equipment. When working, the fresh air disinfection equipment usually exchanges the indoor and outdoor air, and purifies and disinfects the indoor and outdoor air respectively.

[0003] In the current prior art, the existing operating rooms are all sterile environments, and the medical staff will perform sterile disinfection and wear sterile clothes before the operation to maintain the sterile environment inside the operating room as much as possible. However, before the operation, the patient goes directly from the stay ward to the operating room, and a large number of patients walk in the ward and the corridor every day, so that there are a lot of skin debris, virus gas and other substances in the air. As the patient moves in the environment, these skin debris, virus gas and other substances will adhere to the patient's body surface, will enter the operating room with the patient, and then float in the air. When the new air is ventilated in the operating room, the skin debris, virus gas and other substances in the space can only be absorbed into the inside of the pipeline, but the existing pipeline openings are generally open, and some skin debris, virus gas and other substances will adhere to the inner wall surface of the pipeline opening and the filter element surface of the ventilation equipment. Once the ventilation equipment stops, under the transmission of the airflow, the skin debris, virus gas and other substances adhering to the inner wall surface of the pipeline will float out along the pipeline opening, causing the problem of contamination of the sterile environment in the operating room.

[0004] To this end, the present invention provides a fresh air ventilation device for an operating room. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the fresh air ventilation equipment for an operating room described in the present invention comprises an air duct and an air suction head fixedly installed on the surface of one end of the air duct, a positioning support frame detachably installed on the outer surfaces of the air duct and the air suction head, an exhaust pipe 1 fixedly installed on the outer surface of the other end of the air duct, a switch closing unit fixedly installed on the inner wall surface of the air suction head, the switch closing unit comprises upper limit rings symmetrically fixedly connected to the inner wall surfaces on both sides of the air suction head, a baffle plate fixedly connected to the outer surface of the inlet of the air suction head, a closing plate movably sleeved on the inner wall surface of the limiting ring and movably overlapped on the outer surface of the baffle plate, and pull rods fixedly connected to the two side surfaces of the closing plate and the top surface of the connection with the limiting ring;

[0007] An airflow redirecting unit is fixedly installed on the top edge position of the back side of the baffle plate, and the airflow redirecting unit includes a swing bar swingably connected to the outer surface of the top of the baffle plate, and a limit plate movably overlapped on the back side of the swing bar is fixedly connected to the back side and the top edge position of the baffle plate, and a magnet is provided at the joint of the closing plate and the swing bar, and a plurality of groups of small motors are symmetrically fixedly installed on the inner wall surfaces of both sides of the suction head, and a push bar and a pull bar are respectively fixedly connected to the outer surface of the output end of the small motor, and one end of the pull bar is fixedly connected to the top surface of the pull rod, and a hollow crawler that is clamped on the outer surface of the push bar is movably sleeved on the outer surface of the output end of the small motor;

[0008] A fan is detachably mounted on the inner wall of the air duct, a fine filter is movably mounted on the inner wall of the air duct and located at the outer edge of the fan, a filter plate is movably mounted on the inner wall of the air duct and located at the edge of one side of the suction head, and a cavity is arranged between the baffle plate and the filter plate.

[0009] Preferably, grooves are provided on the inner wall surfaces of the upper and lower sides of the air guide tube and at the junction of the filter plate and the air guide tube.

[0010] Preferably, a second swinging lower pressure plate is swingably sleeved on the inner wall surface of the groove.

[0011] Preferably, a spring arranged on the inner wall surface of the groove is fixedly connected to the bottom surface of the swinging lower pressure plate 2.

[0012] Preferably, a swing lower pressing plate 1 movably overlapped on the outer surface of the swing lower pressing plate 2 is swingably sleeved on the back side of the filter plate and located at the upper and lower edge positions.

[0013] Preferably, a closing cover is swingably connected to the outer surface of the air guide tube, and a lock buckle that movably fits on the outer surface of the closing cover is provided on the bottom surface of the air guide tube.

[0014] Preferably, a disinfectant water tank is fixedly connected to the outer surface of the bottom end of the exhaust pipe 1, and the shape of the exhaust pipe 1 is larger at the top and smaller at the bottom, with the smaller end extending to the inner surface of the disinfectant water tank.

[0015] Preferably, a differentiation strip is fixedly connected to the inner wall surface of a smaller end of the exhaust pipe, and the interior of the disinfection water tank is filled with disinfectant.

[0016] Preferably, exhaust pipe 2 is fixedly connected to the top surface of the disinfection water tank and located at the edge positions on both sides.

[0017] Preferably, a filter sponge is provided on the inner wall surface of the exhaust pipe 2, and an exhaust mesh plate is provided on the top surface of the exhaust pipe 2.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The fresh air ventilation device for an operating room described in the present invention utilizes a small motor to rotate so as to pull the pulling strip on the outer surface of the output end of the small motor toward the inner deep direction of the airway, so that the pulling strip is wrapped around the output end surface of the small motor, and under the pulling of the pulling strip, the surfaces on both sides of the closing plate are limited by the limiting ring, and the limiting ring is used as the center point to make the closing plate expand and swing toward the outside, so that the closing plate is peeled off from the surface of the baffle plate, and then the air outlet is opened, and after the air is exchanged, the small motor is coordinated to rotate, and the weight of the closing plate is utilized and the limiting ring is used as the center point to make the closing plate naturally droop and swing downward, and the closing plate is re-lapped on the surface of the baffle plate, so that the inlet of the suction head is sealed, and the cavity between the baffle plate and the filter plate is utilized to concentrate skin debris in an independent space, so as to avoid the problem that skin debris will leak out and cause secondary pollution in the operating room, thereby achieving the effect of opening and closing the inlet of the suction head;

[0020] 2. The fresh air ventilation equipment for an operating room described in the present invention cooperates with a fan to absorb gas inside the air duct and cooperates with an air suction head to absorb external air into the air duct, and then absorbs skin debris, virus gas and other substances into the interior of the duct. When the gas passes through the surface of the baffle plate, the airflow will push the swing bar to swing in the direction of the gas flow, and the swing angle of the swing bar is limited by the limit plate on the back of the baffle plate. The inclined surface of the swing bar allows the gas to flow upward, and the airflow impacts the inner wall of the air suction head. The impact of the gas can blow down some skin debris and dust adhering to the inner wall of the air suction head. The blown-down skin debris and dust will flow to one side with the gas, and cooperate with the filter plate to filter out the skin debris in the air, so as to achieve the effect of cleaning some skin debris and dust adhering to the inner wall of the duct by changing the gas flow direction and the impact force generated by the gas impact.

[0021] 3. The fresh air ventilation equipment for an operating room described in the present invention can be used to infuse the extracted gas into the interior of a disinfection water tank through an exhaust pipe, and at the same time, cooperate with the differentiation strips on the inner wall of the exhaust pipe to polarize the incoming gas. The differentiated gas will come into contact with the disinfectant in the disinfection water tank, and the disinfectant will clean up some common pathogens. At the same time, the disinfectant in the disinfection water tank can wet-absorb some impurities and dust that have not been filtered out, so that these impurities and dust will float in the disinfectant in the disinfection water tank, achieving the effect of secondary wet-absorption of some impurities and dust that have not been filtered out, and cleaning up some common pathogens at the same time, avoiding the continuous discharge of gas, and the impurities and dust will be gradually discharged with the flow of gas, thereby causing secondary pollution to the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a stereogram of the present invention;

[0024] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the airway tube of the present invention;

[0025] Figure 3 It is a schematic diagram of the unfolded three-dimensional structure of the airway tube of the present invention;

[0026] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the suction head of the present invention;

[0027] Figure 5 It is a schematic diagram of the expanded three-dimensional structure of the closed plate of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the filter plate of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the swinging lower pressure plate of the present invention;

[0030] Figure 8 It is a schematic diagram of a partially cutaway three-dimensional structure of the airway tube of the present invention;

[0031] Fig. 9 It is a schematic diagram of a cross-sectional three-dimensional structure of an exhaust pipe of the present invention.

[0032] In the figure: 11, air duct; 111, closing cover; 112, fan; 113, fine filter; 114, filter plate; 115, swing pressure plate one; 116, swing pressure plate two; 117, spring; 12, suction head; 121, small motor; 122, push bar; 123, hollow crawler track; 124, limit ring; 125, pull rod; 126, closing plate; 127, pull bar; 128, baffle plate; 129, limit plate; 1210, swing bar; 13, positioning support frame; 14, exhaust pipe one; 141, disinfection water tank; 142, differentiation bar; 143, exhaust pipe two; 144, filter sponge; 145, exhaust mesh plate. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figures 1 to 9 As shown, an operating room fresh air ventilation device according to an embodiment of the present invention comprises an air duct 11 and an air suction head 12 fixedly mounted on the surface of one end of the air duct 11, a positioning support frame 13 detachably mounted on the outer surfaces of the air duct 11 and the air suction head 12, an exhaust pipe 14 fixedly mounted on the outer surface of the other end of the air duct 11, a switch closing unit fixedly mounted on the inner wall surface of the air suction head 12, the switch closing unit comprises a limiting collar 124 symmetrically fixedly connected to the inner wall surfaces on both sides of the air suction head 12, a baffle plate 128 fixedly connected to the outer surface of the inlet of the air suction head 12, a closing plate 126 movably overlapped on the outer surface of the baffle plate 128 is movably sleeved on the inner wall surface of the limiting collar 124, and a pull rod 125 is fixedly connected to the two side surfaces of the closing plate 126 and the top surface of the junction with the limiting collar 124;

[0035] An airflow redirecting unit is fixedly installed on the top edge position of the back side of the baffle plate 128, and the airflow redirecting unit includes a swing bar 1210 swingably connected to the outer surface of the top of the baffle plate 128, and a limit plate 129 movably overlapped on the back side of the swing bar 1210 is fixedly connected to the back side and the top edge position of the baffle plate 128, and a magnet is provided at the joint of the closing plate 126 and the swing bar 1210. A plurality of groups of small motors 121 are symmetrically fixedly installed on the inner wall surfaces of both sides of the suction head 12, and a push bar 122 and a pull bar 127 are respectively fixedly connected to the outer surface of the output end of the small motor 121, and one end of the pull bar 127 is fixedly connected to the top surface of the pull rod 125, and a hollow crawler 123 clamped on the outer surface of the push bar 122 is movably sleeved on the outer surface of the output end of the small motor 121;

[0036] A fan 112 is detachably mounted on the inner wall of the air duct 11, a fine filter screen 113 is movably mounted on the inner wall of the air duct 11 and located at the outer edge of the fan 112, a filter plate 114 is movably mounted on the inner wall of the air duct 11 and located at the edge of one side of the suction head 12, and a cavity is provided between the baffle plate 128 and the filter plate 114.

[0037] When the switch sealing unit and the airflow redirecting unit provided by the present invention are in use, the ventilation equipment is turned on, and the small motor 121 is rotated to pull the pulling strip 127 on the outer surface of the output end of the small motor 121 toward the inner deep direction of the airway 11, so that the pulling strip 127 is wrapped around the output end surface of the small motor 121, and at the same time, the height of the pull rod 125 on the outer surface of the closing plate 126 is utilized, and under the pulling of the pulling strip 127, the surfaces on both sides of the closing plate 126 are limited by the limiting ring 124, and the limiting ring 124 is used as the center point to make the closing plate 126 expand, swing and rotate toward the outside, and the closing plate 126 is peeled off from the surface of the baffle plate 128, thereby opening the air outlet of the suction head 12, and after ventilation, the small horse is cooperated with. After the closing plate 126 rotates to 121 and there is no pulling force on the surface of the closing plate 126, the closing plate 126 is naturally drooped and swung downward by utilizing its own weight and taking the limiting ring 124 as the center point, and the closing plate 126 is reconnected to the surface of the baffle plate 128, and through the swing bar 1210 and the smaller magnet on the surface of the closing plate 126, it is only necessary to use the magnet to make the swing bar 1210 and the closing plate 126 magnetically fit together, and it is only necessary to seal the entrance of the suction head 12, and use the cavity between the baffle plate 128 and the filter plate 114 to concentrate the skin debris in an independent space to prevent the skin debris from leaking out, thereby achieving the effect of opening and closing the entrance of the suction head 12;

[0038] When the closing plate 126 is opened and closed on the surface of the suction head 12, the pushing strip 122 on the outer surface of the output end of the small motor 121 is used to drive the hollow crawler 123 on the output end surface of the small motor 121, so that multiple closing plates 126 on the outer surface of the baffle plate 128 can be closed and opened at the same time, and then cooperate with the fan 112 to absorb gas from the inside of the air duct 11 and cooperate with the suction head 12 to absorb external air into the inside of the air duct 11, and then absorb skin debris, virus gas and other substances into the inside of the pipe. When the gas passes through the surface of the baffle plate 128, the airflow will push the swing bar 1210 to swing in the direction of the gas flow, and the swing of the swing bar 1210 is controlled by the limiting plate 129 on the back of the baffle plate 128. The swing angle is limited so that the swing bar 1210 is at an inclined angle. When the airflow slides over the surface of the swing bar 1210, the inclined surface of the swing bar 1210 allows the gas to flow upward, and the airflow impacts the inner wall of the suction head 12. The impact of the gas can blow down some skin debris and dust adhering to the inner wall of the suction head 12. The blown-down skin debris and dust will flow to one side with the gas, and cooperate with the filter plate 114 to filter the skin debris in the air, and then use the fine filter mesh 113 to filter some finer impurities, thereby achieving the effect of changing the gas flow direction and the impact force generated by the gas impact to clean up some skin debris and dust adhering to the inner wall of the pipe.

[0039] Furthermore, if Figure 1 - Figure 3 and Figure 6 - Figure 8 As shown, grooves are provided on the inner wall surfaces of the upper and lower sides of the air duct 11 and at the junction of the filter plate 114 and the air duct 11, and a swinging lower pressure plate 116 is swingably sleeved on the inner wall surface of the groove, and a spring 117 arranged on the inner wall surface of the groove is fixedly connected to the bottom surface of the swinging lower pressure plate 116, and a swinging lower pressure plate 115 movably overlapped on the outer surface of the swinging lower pressure plate 116 is swingably sleeved on the back side of the filter plate 114 and at the upper and lower edge positions, a closing cover 111 is swingably connected to the outer surface of the air duct 11, and a lock buckle movably fitted on the outer surface of the closing cover 111 is provided on the bottom surface of the air duct 11.

[0040] The filter plate 114, the swinging pressing plate 115, the swinging pressing plate 2 116, the spring 117 and the closing cover 111 provided by the present invention are used. When the filter plate 114 is required to be replaced regularly, the device is turned off, the closing cover 111 is opened and the swinging pressing plate 115 on the back of the filter plate 114 is swung and pressed. When the swinging pressing plate 115 is swung and pressed, one end of the swinging pressing plate 115 is used to press the top surface of the swinging pressing plate 2 116, so as to use the swinging pressing plate 115 to press the top surface of the swinging pressing plate 2 116. The first pressing plate 115 presses the swinging lower pressing plate 116 into the groove. When the plurality of swinging lower pressing plates 116 are pressed into the groove, the filter plate 114 is separated from the inside of the air guide tube 11, the surface of the filter plate 114 is disinfected and cleaned, and then the inner wall surface of the air guide tube 11 is rinsed for the second time to clean the skin debris inside. After cleaning the filter plate 114, the outer surface of the filter plate 114 is attached to the inner wall surface of the air guide tube 11, and the filter plate 114 is moved toward the direction of the suction head 12. The filter plate 114 is pushed and the connecting groove on the inner wall of the air guide tube 11 is used to limit the position of the filter plate 114. As the filter plate 114 continues to slide, the corner position of the filter plate 114 is used to squeeze the top surface of the swinging lower pressure plate 116, and the swinging lower pressure plate 116 is squeezed onto the inner wall of the groove. When the filter plate 114 is no longer blocked by the swinging lower pressure plate 116, the filter plate 114 completely passes through the top surface of the swinging lower pressure plate 116, and the spring 117 is used to elastically rebound the swinging lower pressure plate 116, so that the side surface of the swinging lower pressure plate 116 is squeezed and overlapped on the back of the filter plate 114, and a triangular support is formed at the connection between the filter plate 114, the swinging lower pressure plate 116 and the air guide tube 11. The filter plate 114 can be replaced and rinsed regularly and quickly, avoiding the need for screws to position the traditional filter plate. Long-term disassembly and replacement will cause the wear between the screws and the screw holes to increase, resulting in the screws becoming loose and difficult to replace.

[0041] Furthermore, if Figure 1 Figure 3 and Fig. 9 As shown, a disinfectant water tank 141 is fixedly connected to the outer surface of the bottom end of the exhaust pipe 14. The shape of the exhaust pipe 14 is larger at the top and smaller at the bottom, and the smaller end extends to the inner surface of the disinfectant water tank 141. A differentiation strip 142 is fixedly connected to the inner wall surface of the smaller end of the exhaust pipe 14. The interior of the disinfectant water tank 141 is filled with disinfectant. Exhaust pipe 2 143 is fixedly connected to the top surface of the disinfectant water tank 141 and at the edge positions on both sides. A filter sponge 144 is arranged on the inner wall surface of the exhaust pipe 143, and an exhaust mesh plate 145 is arranged on the top surface of the exhaust pipe 143.

[0042] When the disinfection water tank 141, differentiation strips 142 and exhaust pipe 14 provided by the present invention are in use, the extracted gas will be infused into the interior of the disinfection water tank 141 through the exhaust pipe 14, and at the same time, the differentiation strips 142 on the inner wall of the exhaust pipe 14 will cooperate to polarize the incoming gas, and the differentiated gas will contact the disinfectant inside the disinfection water tank 141, and the disinfectant will clean up some common pathogens. At the same time, the disinfectant inside the disinfection water tank 141 can wet-absorb some impurities and dust that have not been filtered out, so that these impurities and dust will float in the disinfectant inside the disinfection water tank 141, achieving the effect of secondary wet-absorption of some impurities and dust that have not been filtered out, and cleaning up some common pathogens at the same time, avoiding the continuous discharge of gas, and the impurities and dust will be gradually discharged with the flow of gas, thereby causing secondary pollution to the external environment. At the same time, as the gas continues to rise inside the disinfectant, the filter sponge 144 is cooperated to filter the disinfectant inside the gas, so that the dust and impurities inside the disinfectant are filtered out.

[0043] The working principle provided by the present invention is as follows: the ventilation device is turned on, and the small motor 121 is used to rotate so as to pull the pulling strip 127 on the outer surface of the output end of the small motor 121 toward the inner deep direction of the airway 11, so that the pulling strip 127 is wrapped around the output end surface of the small motor 121, and at the same time, the height of the pull rod 125 on the outer surface of the closing plate 126 is used, and under the pulling of the pulling strip 127, the surfaces on both sides of the closing plate 126 are limited by the limiting ring 124, and the limiting ring 124 is used as the center point to make the closing plate 126 expand and swing toward the outside, and the closing plate 126 is peeled off from the surface of the baffle plate 128, thereby opening the air outlet of the suction head 12 and ventilation. After that, the small motor 121 is coordinated to rotate, and the weight of the closing plate 126 is used and the limiting ring 124 is used as the center point to make the closing plate 126 swing downward naturally, and the closing plate 126 is reconnected to the surface of the baffle plate 128, and through the swing bar 1210 and the smaller magnet on the surface of the closing plate 126, the swing bar 1210 and the closing plate 126 only need to be magnetically attached together by the magnet, and only the entrance of the suction head 12 needs to be closed, and the cavity between the baffle plate 128 and the filter plate 114 is used to collect skin debris in an independent space to prevent the skin debris from leaking out and causing secondary pollution in the operating room;

[0044] When the closing plate 126 is opened and closed on the surface of the suction head 12, the pushing strip 122 on the outer surface of the output end of the small motor 121 is used to drive the hollow crawler 123 on the output end surface of the small motor 121, so that multiple closing plates 126 on the outer surface of the baffle plate 128 can be closed and opened at the same time, and then cooperate with the fan 112 to absorb gas from the inside of the air duct 11 and cooperate with the suction head 12 to absorb external air into the inside of the air duct 11, and then absorb skin debris, virus gas and other substances into the inside of the pipe. When the gas passes through the surface of the baffle plate 128, the airflow will push the swing bar 1210 to swing in the direction of the gas flow, and pass The limit plate 129 on the back of the baffle plate 128 limits the swing angle of the swing bar 1210, so that the swing bar 1210 is at an inclined angle. When the airflow slides over the surface of the swing bar 1210, the inclined surface of the swing bar 1210 is used to allow the gas to flow upward, and the airflow is allowed to hit the inner wall of the suction head 12. The impact of the gas can be used to blow down some skin debris and dust adhering to the inner wall of the suction head 12. The blown-down skin debris and dust will flow to one side with the gas, and cooperate with the filter plate 114 to filter the skin debris in the air, and then filter some finer impurities through the fine filter 113;

[0045] The extracted gas will be injected into the interior of the disinfection water tank 141 through the exhaust pipe 14, and at the same time, the differentiation strips 142 on the inner wall of the exhaust pipe 14 will polarize the incoming gas. The differentiated gas will come into contact with the disinfectant inside the disinfection water tank 141, and the disinfectant will clean up some common pathogens. At the same time, the disinfectant inside the disinfection water tank 141 can wet-absorb some impurities and dust that have not been filtered out, so that these impurities and dust will float in the disinfectant inside the disinfection water tank 141.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fresh air ventilation device for an operating room, comprising an air duct (11) and an air suction head (12) fixedly mounted on the surface of one end of the air duct (11), a positioning support frame (13) detachably mounted on the outer surfaces of the air duct (11) and the air suction head (12), and an exhaust pipe (14) fixedly mounted on the outer surface of the other end of the air duct (11), characterized in that: A switch closing unit is fixedly installed on the inner wall surface of the air suction head (12), and the switch closing unit includes a limit ring (124) symmetrically fixedly connected to the inner wall surfaces on both sides of the air suction head (12), a baffle plate (128) is fixedly connected to the outer surface of the entrance of the air suction head (12), a closing plate (126) movably overlapped on the outer surface of the baffle plate (128) is movably sleeved on the inner wall surface of the limit ring (124), and a pull rod (125) is fixedly connected to the two side surfaces of the closing plate (126) and the top surface of the connection with the limit ring (124); An airflow redirection unit is fixedly installed at the top edge of the back side of the baffle plate (128), and the airflow redirection unit comprises a swing bar (1210) swingably connected to the top outer surface of the baffle plate (128). A limit plate (129) is fixedly connected to the back side and the top edge of the baffle plate (128), and the back side of the swing bar (1210) is movably overlapped on the limit plate (129). A magnet is provided at the joint between the closing plate (126) and the swing bar (1210). , a plurality of groups of small motors (121) are symmetrically fixedly mounted on the inner wall surfaces on both sides of the suction head (12), a push bar (122) and a pull bar (127) are respectively fixedly connected to the outer surface of the output end of the small motor (121), and one end of the pull bar (127) is fixedly connected to the top surface of the pull rod (125), and a hollow crawler (123) that is clamped on the outer surface of the push bar (122) is movably sleeved on the outer surface of the output end of the small motor (121); A fan (112) is detachably mounted on the inner wall of the air guide tube (11), a fine filter screen (113) is movably sleeved on the inner wall of the air guide tube (11) and located at an outer edge of the fan (112), a filter plate (114) is movably sleeved on the inner wall of the air guide tube (11) and located at an edge of one side of the air suction head (12), and a cavity is provided between the baffle plate (128) and the filter plate (114); Grooves are provided on the inner wall surfaces of the upper and lower sides of the air guide pipe (11) and at the junction between the filter plate (114) and the air guide pipe (11); A second swinging lower pressure plate (116) is swingably sleeved on the inner wall surface of the groove; A spring (117) arranged on the inner wall surface of the groove is fixedly connected to the bottom surface of the second swinging lower pressing plate (116); A swing lower pressing plate 1 (115) movably overlapped on the outer surface of a swing lower pressing plate 2 (116) is swingably sleeved on the back side of the filter plate (114) and located at the upper and lower edge positions; A closing cover (111) is swingably connected to the outer surface of the air guide tube (11), and a locking buckle movably fitted to the outer surface of the closing cover (111) is provided on the bottom surface of the air guide tube (11).

2. The fresh air ventilation equipment for operating rooms according to claim 1, characterized in that: A disinfectant water tank (141) is fixedly connected to the outer surface of the bottom end of the exhaust pipe 1 (14), and the shape of the exhaust pipe 1 (14) is larger at the top and smaller at the bottom, with the smaller end extending to the inner surface of the disinfectant water tank (141).

3. The fresh air ventilation equipment for operating rooms according to claim 2, characterized in that: A differentiation strip (142) is fixedly connected to the inner wall surface of the smaller end of the exhaust pipe (14), and the interior of the disinfection water tank (141) is filled with disinfectant.

4. The fresh air ventilation equipment for operating rooms according to claim 3, characterized in that: Exhaust pipe 2 (143) is fixedly connected to the top surface of the disinfection water tank (141) and at the edges on both sides.

5. The fresh air ventilation equipment for operating rooms according to claim 4, characterized in that: A filter sponge (144) is provided on the inner wall surface of the second exhaust pipe (143), and an exhaust mesh plate (145) is provided on the top surface of the second exhaust pipe (143).

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