A negative pressure isolation ward air supply device

Abstract

This invention provides a negative pressure isolation ward air supply device, relating to the field of medical environment ventilation equipment technology. It includes a square air supply duct with a guide vane assembly on the front side of its inner surface. Through the cooperation of a dual-head motor, a rotating shaft, an active plate, a connecting rod, a driven plate, and a guide vane, the dual-head motor, when started, causes the rotating shaft to drive the fixed active plate to rotate synchronously. Power is transmitted through the connecting rod at the end, causing several vertically arranged driven plates to rotate synchronously. This drives the guide vane to rotate around a rotation point on the front side of the inner surface of the square air supply duct, achieving flexible adjustment of the air supply angle. Medical staff can adjust the angle of the guide vane according to the position of the patient bed, the placement of medical equipment, or the operating position of the medical staff, effectively eliminating airflow dead zones formed by traditional fixed air supply angles. This ensures uniform air circulation in the ward, and allows polluted air to be fully captured and discharged by the negative pressure exhaust system, improving the ward's purification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical environment ventilation equipment technology, and in particular to a negative pressure isolation ward air supply device. Background Technology

[0002] Negative pressure isolation wards are core medical spaces for dealing with respiratory infectious diseases. Their core principle is to create negative pressure inside the ward by using the airflow difference between "supply air" and "exhaust air" to prevent contaminated air from escaping. The air supply device of the negative pressure isolation ward is a key component responsible for delivering filtered, purified, and temperature and humidity regulated fresh air into the ward. It is the core equipment for maintaining air quality in the ward and ensuring the comfort of the patient's treatment environment.

[0003] The existing negative pressure isolation ward air supply device has the following shortcomings:

[0004] Existing air supply angles are mostly fixed, making it impossible to adjust the airflow direction according to the position of beds, the placement of medical equipment, and the operational needs of medical staff in the ward. This leads to dead air zones in the ward, where polluted air tends to accumulate and is difficult to be expelled by the negative pressure exhaust system in a timely manner, affecting the purification effect of the ward. At the same time, the filter fixing structure of existing devices is complex, mostly using bolt-through fixing or clip-nesting fixing. When replacing and maintaining the filter, it is necessary to disassemble multiple parts with special tools, which is cumbersome. This not only prolongs the maintenance time but also may cause pollutants to fall off due to filter shaking during disassembly, increasing the risk of infection for medical staff. Utility Model Content

[0005] This invention proposes a negative pressure isolation ward air supply device that can flexibly adjust the air supply angle to eliminate airflow dead zones, and facilitates quick and easy disassembly and assembly of the filter to improve maintenance efficiency, while ensuring the stability of the filter fixation, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a negative pressure isolation ward air supply device, comprising a square air supply pipe, wherein an air guide component is provided on the front side of the inner surface of the square air supply pipe.

[0007] The air guide assembly includes a dual-head motor, which is fixedly connected to the bottom front side of the square air supply duct. The output shafts at both ends of the dual-head motor are fixedly connected to rotating shafts. Movable slots are provided on both the left and right sides of the front side of the square air supply duct. The end of the rotating shaft away from the dual-head motor passes through the interior of the movable slot and is fixedly connected to an active plate. The end of the active plate away from the rotating shaft is movably connected to a connecting rod. Several driven plates arranged vertically are movably connected to the opposite faces of the two connecting rods. An air guide plate is fixedly connected to the opposite faces of two driven plates arranged symmetrically on the left and right. The air guide plate is rotatably connected to the front side of the inner surface of the square air supply duct.

[0008] Preferably, a cross bracket is fixedly connected to the middle of the inner surface of the square air supply duct, a drive motor is fixedly connected to the middle of the cross bracket, and an air supply fan is fixedly connected to the output shaft of the drive motor.

[0009] Preferably, a connecting groove is provided on the rear side of the inner wall of the square air supply duct, and a high-efficiency HEPA filter is slidably connected to the inner surface of the connecting groove. A medium-efficiency non-woven fabric filter is provided on the rear side of the high-efficiency HEPA filter, and a primary metal filter is provided on the rear side of the medium-efficiency non-woven fabric filter.

[0010] Preferably, each of the four corners of the inner wall of the connecting groove is fixedly connected to a fixing component, and each of the four corners of the high-efficiency HEPA filter, the medium-efficiency non-woven filter, and the primary metal filter has a through hole extending from front to back, and the inner surface of the through hole is slidably connected to the outer surface of the fixing component.

[0011] Preferably, the fixing component includes a connecting pin, which is fixedly connected to the inner wall of the connecting groove. The rear end of the connecting pin has a threaded hole, and the inner surface of the threaded hole is threaded with a threaded post.

[0012] Preferably, a rotating column is fixedly connected to the rear end of the threaded column, a receiving groove is fixedly connected to the rear side of the rotating column, and a rotating baffle is rotatably connected to the rear side of the inner surface of the receiving groove.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. In this utility model, through the mutual cooperation between the dual-head motor, rotating shaft, active plate, connecting rod, driven plate and air guide plate, after the dual-head motor is started, it drives the rotating shafts at both ends to rotate synchronously. When the rotating shaft rotates, it drives the active plate fixed to it to rotate synchronously in the movable slot. During the rotation of the active plate, it transmits power through the connecting rod connected to the end, so that the two connecting rods drive several driven plates arranged vertically to rotate synchronously. The symmetrical driven plates on the left and right sides drive the air guide plate to rotate around the rotation point on the front side of the inner surface of the square air supply pipe. This structure can realize the flexible adjustment of the air supply angle. Medical staff can adjust the angle of the air guide plate according to the position of the patient bed in the ward, the placement of medical equipment or the operating position of medical staff, effectively eliminating the dead airflow formed by the traditional fixed air supply angle, ensuring uniform air circulation in the ward, and ensuring that polluted air can be fully captured and discharged by the negative pressure exhaust system, thereby improving the purification efficiency of the ward.

[0015] 2. In this utility model, through the cooperation between the fixing component and the high-efficiency HEPA filter, the medium-efficiency non-woven filter, and the primary metal filter, when fixing the filter, first rotate the rotating baffle around the rotation point of the receiving groove into the receiving groove, so that the rotating baffle is flush with the rotating column and the connecting column. Then, the high-efficiency HEPA filter, the medium-efficiency non-woven filter, and the primary metal filter are placed into the connecting groove in sequence, so that the through holes on the filter screen pass through the rotating column and the connecting column respectively. Then, rotate the rotating baffle out of the receiving groove and keep it perpendicular to the rotating column. At this time, rotating the rotating baffle can drive the rotating column to rotate synchronously. When the rotating column rotates, it will slide towards the filter screen through the threaded transmission of the threaded column and the threaded hole on the connecting column. Finally, the rotating column and the rotating baffle slide towards the filter screen. The baffle firmly presses against the outside of the primary metal filter, securing the three-layer filter. For disassembly, rotating the baffle in the opposite direction causes the rotating and threaded columns to unscrew outwards. Then, rotating the baffle back into the receiving groove allows for direct extraction of the three-layer filter. This structure requires no special tools; filter installation and removal are completed simply by retracting and rotating the baffle. The operation is simple and quick, significantly reducing filter replacement and maintenance time. Simultaneously, the threaded drive, combined with the clamping action of the rotating baffle, ensures a tight fit between the filter and the inner wall of the connecting groove, preventing unfiltered air from seeping in through gaps due to filter loosening, thus guaranteeing the cleanliness of the supplied air. Furthermore, during disassembly, the filter moves stably along the connecting groove and fixing components, reducing the risk of contaminant detachment and lowering the probability of infection for medical personnel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the air supply device for the negative pressure isolation ward of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the square air supply duct of this utility model;

[0018] Figure 3 This is an enlarged structural schematic diagram of the air guide component of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the fixing component of this utility model.

[0020] Legend: 1. Square air supply duct; 11. Cross bracket; 12. Drive motor; 13. Air supply fan; 14. Connecting slot; 15. High-efficiency HEPA filter; 16. Medium-efficiency non-woven filter; 17. Primary metal filter; 18. Fixing assembly; 181. Connecting post; 182. Threaded hole; 183. Threaded post; 184. Rotating post; 185. Receiving slot; 186. Rotating baffle; 2. Air guide assembly; 21. Dual-head motor; 22. Rotating shaft; 23. Active plate; 24. Linkage rod; 25. Driven plate; 26. Air guide plate. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 and Figure 3 As shown, this utility model provides a technical solution: including a square air supply pipe 1, an air guide assembly 2 is provided on the front side of the inner surface of the square air supply pipe 1, the air guide assembly 2 includes a double-headed motor 21, the double-headed motor 21 is fixedly connected to the bottom front side of the square air supply pipe 1, the output shafts at both ends of the double-headed motor 21 are fixedly connected to a rotating shaft 22, movable slots are provided on both the left and right sides of the front side of the square air supply pipe 1, the end of the rotating shaft 22 away from the double-headed motor 21 passes through the interior of the movable slot and is fixedly connected to an active plate 23, the end of the active plate 23 away from the rotating shaft 22 is movably connected to a connecting rod 24, the opposite surfaces of the two connecting rods 24 are movably connected to a plurality of vertically arranged driven plates 25, the opposite surfaces of the two symmetrically arranged driven plates 25 are fixedly connected to an air guide plate 26, and the air guide plate 26 is rotatably connected to the front side of the inner surface of the square air supply pipe 1;

[0024] The overall effect of Embodiment 1 is as follows: When the air supply angle needs to be adjusted, the dual-head motor 21 is started. The dual-head motor 21 drives the left and right rotating shafts 22 to rotate synchronously. The rotating shafts 22 drive the active plate 23 to rotate in the movable slot. The active plate 23 pulls the driven plate 25 through the connecting rod 24, so that multiple driven plates 25 drive the air guide plate 26 to rotate synchronously, thereby realizing the flexible adjustment of the air supply angle. According to the actual needs of the ward, the air guide plate 26 can be adjusted to a suitable angle to avoid the airflow blowing directly on the patient and causing discomfort. At the same time, it avoids the interference of medical equipment on the airflow, eliminates the dead corners of airflow in the ward, and allows clean air to evenly cover all areas of the ward. It also works with the negative pressure exhaust system to efficiently discharge polluted air.

[0025] Example 2: Figure 2 and Figure 4As shown, this utility model provides a technical solution: a cross bracket 11 is fixedly connected to the middle of the inner surface of a square air supply duct 1; a drive motor 12 is fixedly connected to the middle of the cross bracket 11; an air supply fan 13 is fixedly connected to the output shaft of the drive motor 12; a connecting groove 14 is provided on the rear side of the inner wall of the square air supply duct 1; a high-efficiency HEPA filter 15 is slidably connected to the inner surface of the connecting groove 14; a medium-efficiency non-woven fabric filter 16 is provided on the rear side of the high-efficiency HEPA filter 15; a primary-efficiency metal filter 17 is provided on the rear side of the medium-efficiency non-woven fabric filter 16; and fixing components 18 are fixedly connected to the four corners of the inner wall of the connecting groove 14. The four corners of filter screen 15, medium-efficiency non-woven filter screen 16, and primary-efficiency metal filter screen 17 are provided with through holes extending from front to back. The inner surface of the through holes is slidably connected to the outer surface of the fixing component 18. The fixing component 18 includes a connecting post 181, which is fixedly connected to the inner wall of the connecting groove 14. The rear end of the connecting post 181 is provided with a threaded hole 182. The inner surface of the threaded hole 182 is threadedly connected to a threaded post 183. The rear end of the threaded post 183 is fixedly connected to a rotating post 184. The rear side of the rotating post 184 is fixedly connected to a receiving groove 185. The rear side of the inner surface of the receiving groove 185 is rotatably connected to a rotating baffle 186.

[0026] The overall effect of Embodiment 2 is as follows: After the drive motor 12 starts, it drives the fan 13 to rotate, and the suction force generated draws outside air into the square air supply duct 1. The air first passes through the primary metal filter 17, which filters out large particles such as dust and hair. Then it passes through the medium-efficiency non-woven fabric filter 16, which further filters out fine particles and some microorganisms. Finally, it passes through the high-efficiency HEPA filter 15, which intercepts tiny pollutants such as germs and aerosols in the air, ensuring that the air delivered to the ward meets medical cleanliness standards. The fixing component 18 can quickly complete the disassembly and assembly of the three-layer filter. When the filter needs to be replaced, no special tools are required. Simply rotate the rotating baffle 186 and unscrew the rotating column 184 to pull out the old filter and install the new filter. The operation is convenient and can prevent the filter from shaking and causing pollutants to fall off, ensuring the safety of medical staff. At the same time, the threaded drive fixing method can make the filter fit tightly with the connecting groove 14, preventing unfiltered air from seeping in.

[0027] The working principle of the entire device is as follows: When air supply is required in the negative pressure isolation ward, first ensure that the high-efficiency HEPA filter 15, medium-efficiency non-woven filter 16, and primary metal filter 17 are securely installed in the connecting groove 14 through the fixing component 18. Start the drive motor 12, which drives the supply fan 13 to rotate at high speed. The airflow generated by the supply fan 13 draws in outside air from the rear of the square air supply duct 1. After entering, the air passes through the primary metal filter 17, medium-efficiency non-woven filter 16, and high-efficiency HEPA filter 15 in sequence, gradually removing large particulate impurities, fine particles, microorganisms, and germs from the air, obtaining clean air that meets medical standards. The clean air continues to flow forward and reaches the air guide component 2 on the front side of the inner surface of the square air supply duct 1. According to the bed in the ward... Based on the location, placement of medical equipment, and operational needs of medical staff, the dual-head motor 21 is activated. The dual-head motor 21 drives the rotating shafts 22 at both ends to rotate synchronously. The rotating shafts 22 drive the active plate 23 to rotate within the movable slot. The active plate 23 drives several vertically arranged driven plates 25 to move synchronously through the connecting rod 24 at its end. The driven plates 25 then drive the air guide plate 26 to rotate around the rotation point on the front side of the inner surface of the square air supply duct 1, adjusting the air guide plate 26 to a suitable air supply angle. Finally, the clean air, after filtration and angle adjustment, is evenly delivered into the negative pressure isolation ward along the direction guided by the air guide plate 26. This, in conjunction with the ward's exhaust system, forms a stable negative pressure environment, providing patients with a comfortable treatment air environment while preventing contaminated air from escaping from the ward, ensuring the safety of medical staff and the surrounding environment. When the filter needs to be replaced or maintained, rotate the rotating baffle 186 in the reverse direction to drive the rotating column 184 and the threaded column 183 to move outward along the threaded hole 182 of the connecting insert 181. After rotating the rotating baffle 186 into the receiving groove 185, the primary metal filter 17, the medium-efficiency non-woven fabric filter 16, and the high-efficiency HEPA filter 15 can be pulled out in sequence for replacement. After replacement, the reverse steps can be followed to fix them back in place. The whole process does not require special tools and is simple and efficient to operate.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An air supply device for a negative pressure isolation room, characterized by: It includes a square air supply duct (1), and an air guide assembly (2) is provided on the front side of the inner surface of the square air supply duct (1); The air guide assembly (2) includes a dual-head motor (21), which is fixedly connected to the bottom front side of the square air supply pipe (1). The output shafts at both ends of the dual-head motor (21) are fixedly connected to a rotating shaft (22). Movable slots are provided on both the left and right sides of the front side of the square air supply pipe (1). The end of the rotating shaft (22) away from the dual-head motor (21) passes through the interior of the movable slot and is fixedly connected to an active plate (23). The end of the active plate (23) away from the rotating shaft (22) is movably connected to a connecting rod (24). Several driven plates (25) arranged vertically are movably connected to the opposite surfaces of the two connecting rods (24). A guide plate (26) is fixedly connected to the opposite surfaces of the two driven plates (25) arranged symmetrically on the left and right. The guide plate (26) is rotatably connected to the front side of the inner surface of the square air supply pipe (1).

2. The negative pressure isolation room air supply device according to claim 1, characterized in that: A cross bracket (11) is fixedly connected to the middle of the inner surface of the square air supply pipe (1), a drive motor (12) is fixedly connected to the middle of the cross bracket (11), and an air supply fan (13) is fixedly connected to the output shaft of the drive motor (12).

3. The negative pressure isolation ward air supply device according to claim 1, characterized in that: The inner wall of the square air supply duct (1) is provided with a connecting groove (14) on the rear side. A high-efficiency HEPA filter (15) is slidably connected to the inner surface of the connecting groove (14). A medium-efficiency non-woven fabric filter (16) is provided on the rear side of the high-efficiency HEPA filter (15). A primary metal filter (17) is provided on the rear side of the medium-efficiency non-woven fabric filter (16).

4. The negative pressure isolation ward air supply device according to claim 3, characterized in that: The inner wall of the connecting groove (14) is fixedly connected to the four corners of the fixing component (18). The four corners of the high-efficiency HEPA filter (15), medium-efficiency non-woven filter (16), and primary metal filter (17) are all provided with through holes that run through the front and back. The inner surface of the through hole is slidably connected to the outer surface of the fixing component (18).

5. The negative pressure isolation ward air supply device according to claim 4, characterized in that: The fixing component (18) includes a connecting pin (181), which is fixedly connected to the inner wall of the connecting groove (14). The rear end of the connecting pin (181) is provided with a threaded hole (182), and a threaded post (183) is threadedly connected to the inner surface of the threaded hole (182).

6. The negative pressure isolation ward air supply device according to claim 5, characterized in that: The rear end of the threaded column (183) is fixedly connected to a rotating column (184), and the rear side of the rotating column (184) is fixedly connected to a receiving groove (185). The rear side of the inner surface of the receiving groove (185) is rotatably connected to a rotating baffle (186).

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