Pressure regulating device used in negative pressure ward

Abstract

The utility model relates to the technical field of negative pressure wards. The pressure regulating device used in the negative pressure ward comprises a main body structure, and the main body structure comprises an exhaust pipe, a limiting ring, filter cotton and a connecting rod; and the pressure adjusting structure comprises a fixing seat, a driving motor and a worm gear, and the fixing seat is fixedly connected to the upper surface of the exhaust pipe. A power source can be provided for the driving motor through an external power source, the output end of the driving motor can drive the worm to rotate after the driving motor is started, then the worm can drive the worm gear and the connecting rod to rotate synchronously when the worm rotates, and therefore the pressure regulating valve can be driven to rotate synchronously. At the moment, a gap in the exhaust pipe can be adjusted, the air inflow in the exhaust pipe can be conveniently and accurately adjusted through the design, and therefore the work intensity of medical workers can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure ward technology; more specifically, it relates to a pressure regulating device used in negative pressure wards. Background Technology

[0002] Negative pressure wards are medical facilities that maintain indoor air pressure lower than the external environment through a special ventilation system. Their core technology lies in using a high-efficiency exhaust system and airflow organization design to ensure unidirectional airflow (internal polluted air is discharged after being filtered by a HEPA filter, while clean external air continuously flows in), forming a stable negative pressure environment (usually 15-20 Pa lower), effectively blocking the leakage of pathogens.

[0003] Existing negative pressure isolation wards continuously exhaust contaminated indoor air through an exhaust system, maintaining an internal air pressure lower than the external environment. This creates a directional airflow, allowing clean external air to flow unidirectionally from the clean area into the contaminated area, while air containing pathogens is filtered and exhausted through the exhaust system, ensuring the safety of medical staff and the external environment.

[0004] Currently, the pressure regulating devices used in negative pressure wards have some shortcomings: 1. Most existing pressure regulating devices use butterfly valves or mechanical valves, relying on manual adjustment of the opening and closing angle, which is not convenient for precise adjustment of the valve opening and closing angle and increases the workload of medical staff; 2. When replacing the filter cotton of some existing pressure regulating devices, special tools are usually required for disassembly, making the replacement of filter cotton time-consuming and laborious for staff. Therefore, there is an urgent need for pressure regulating devices used in negative pressure wards to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pressure regulating device for use in negative pressure wards to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a pressure regulating device used in negative pressure wards, comprising:

[0007] The main structure includes an exhaust pipe, a limiting ring, filter cotton, and a connecting rod;

[0008] A pressure regulating structure, comprising a fixed base, a drive motor and a worm gear, wherein the fixed base is fixedly connected to the upper surface of the exhaust pipe;

[0009] The fixed structure includes a hinge, a fixed barrier, a connecting block, and a fixing block. One end of the hinge is fixedly connected to the outer surface of one side of the other end of the exhaust pipe, and the other end of the hinge is fixedly connected to the outer surface of one end of the fixed barrier.

[0010] Preferably, an installation plate is fixedly connected to the outer surface of the middle position of the exhaust pipe, and a protective net is fixedly connected to the inside of one end of the exhaust pipe. A fan is installed inside the exhaust pipe. The protective net can prevent some large impurities from being sucked into the exhaust pipe. The fan model is ECF-500H, which has low operating noise, and is therefore more suitable for the environment of negative pressure wards.

[0011] Preferably, the limiting ring is fixedly connected to the inner surface of the other end of the exhaust pipe, and the surface of one side of the filter cotton is attached to the surface of one side of the limiting ring. The limiting ring can support the filter cotton, thereby improving the stability of the filter cotton during use. The filter cotton can filter the airflow passing through it.

[0012] Preferably, a pressure regulating valve is hinged to the inside of the exhaust pipe, and the connecting rod is fixedly connected to the upper end of the pressure regulating valve and hinged to the inside of the upper surface of the exhaust pipe. The diameter of the pressure regulating valve is adapted to the inner diameter of the exhaust pipe. When the pressure regulating valve is rotated, it can adjust the gap inside the exhaust pipe, thereby adjusting the air intake volume inside the exhaust pipe.

[0013] Preferably, the worm gear is fixedly connected to the outer surface of the connecting rod, a drive motor is mounted on the outer surface of one side of the fixed seat, and the output end bearing of the drive motor is connected to the inside of the outer surface of one side of the fixed seat. The output end of the drive motor is fixedly connected to a worm, and the outer surface of the worm meshes with the outer surface of the worm gear. The model of the drive motor is Σ-7A2H024P. After the drive motor is started, its output end can drive the worm to rotate. When the worm rotates, it can drive the worm gear and the connecting rod to rotate synchronously, thereby driving the pressure regulating valve to rotate synchronously.

[0014] Preferably, the surface of one side of the fixed mesh is attached to the outer surface of the other end of the exhaust pipe, and the surface of one side of the fixed mesh is attached to the surface of the other side of the filter cotton. When the fixed mesh is pulled, it can be rotated by the hinge. When the surface of one side of the fixed mesh is attached to the outer surface of the other end of the exhaust pipe, the position of the filter cotton can be fixed.

[0015] Preferably, the connecting block is fixedly connected to the outer surface of the other side of the exhaust pipe, and a connecting seat is fixedly connected to one end of the connecting block. A pull plate is inserted into the inner surface of one side of the connecting seat. A fixing block is fixedly connected to one end of the pull plate, and the fixing block is inserted into the inner surface of the connecting seat. The surface of one side of the fixing block is in contact with the surface of the other side of the fixed net. A pressure spring is fixedly connected to one end of the fixing block, and one end of the pressure spring abuts against the inner surface of the connecting seat. The pressure spring can use its own elasticity to push the fixing block so that one side of its surface is in contact with the surface of the other side of the fixed net. At this time, the position of the fixed net can be fixed.

[0016] The technical effects and advantages of this utility model are as follows: This utility model can provide power to the drive motor through an external power source. After the drive motor starts, its output end can drive the worm gear to rotate. When the worm gear rotates, it can drive the worm wheel and the connecting rod to rotate synchronously, thereby driving the pressure regulating valve to rotate synchronously. At this time, the gap inside the exhaust pipe can be adjusted. This design can adjust the air intake inside the exhaust pipe in a relatively convenient and precise manner, thereby effectively reducing the workload of medical staff.

[0017] By pulling the pull plate, the fixing block can be detached from the surface of the other side of the fixed screen. At this time, the fixed screen can be pulled so that one side of its surface is detached from the outer surface of the other end of the exhaust pipe. The fixed screen will not block the filter cotton. Then, the staff can easily remove and replace the filter cotton. This design allows the staff to replace the filter cotton in a more time-saving and labor-saving way. Moreover, its overall structure is simple and reasonable, highly practical, and easy to promote and apply. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is an exploded three-dimensional structural diagram of the main structure of this utility model.

[0020] Figure 3 This utility model Figure 1 A schematic diagram of a partial explosion of the three-dimensional structure at point A.

[0021] Figure 4 This is a three-dimensional structural diagram of the fixed structure of this utility model.

[0022] Figure 5 This utility model Figure 1 A schematic diagram of a partial explosion of the three-dimensional structure at point B.

[0023] Figure 6 This is a partial three-dimensional schematic diagram of the fixed structure of this utility model.

[0024] The attached diagram is labeled as follows: 1. Main structure; 11. Exhaust pipe; 12. Mounting plate; 13. Protective net; 14. Fan; 15. Limiting ring; 16. Filter cotton; 17. Pressure regulating valve; 18. Connecting rod; 2. Pressure regulating structure; 21. Fixing seat; 22. Drive motor; 23. Worm gear; 24. Worm wheel; 3. Fixing structure; 31. Hinge; 32. Fixing net; 33. Connecting block; 34. Connecting seat; 35. Pull plate; 36. Fixing block; 37. Pressure spring. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The pressure regulating device used in the negative pressure ward of this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example 1

[0026] like Figures 1 to 3 As shown, this utility model provides a pressure regulating device for use in negative pressure wards, including: a main structure 1, which includes an exhaust pipe 11, a limiting ring 15, a filter cotton 16, and a connecting rod 18. An installation plate 12 is fixedly connected to the outer surface of the middle position of the exhaust pipe 11, and a protective net 13 is fixedly connected to the inside of one end of the exhaust pipe 11. A fan 14 is installed inside the exhaust pipe 11. The limiting ring 15 is fixedly connected to the inner surface of the other end of the exhaust pipe 11. One side of the filter cotton 16 is attached to one side of the limiting ring 15. A pressure regulating valve 17 is hinged to the inside of the exhaust pipe 11. The connecting rod 18 is fixedly connected to the upper end of the pressure regulating valve 17 and is hinged to the inside of the upper surface of the exhaust pipe 11. The device can be installed in a suitable position using the installation plate 12. During installation, one end of the exhaust pipe 11 is placed inside the ward, and then the other end of the exhaust pipe 11... Located outside the ward, the protective net 13 prevents larger impurities from being drawn into the exhaust duct 11. The fan 14 is an ECF-500H model, which operates with low noise, making it suitable for the negative pressure ward environment. The limiting ring 15 supports the filter cotton 16, improving its stability during use. The filter cotton 16 filters the airflow passing through it, effectively preventing air pollution from pathogens from contaminating the external environment. The diameter of the pressure regulating valve 17 matches the inner diameter of the exhaust duct 11. When the pressure regulating valve 17 rotates, it adjusts the gap inside the exhaust duct 11, thereby adjusting the air intake. Increasing the air intake accelerates the exhaust speed, increasing the negative pressure inside the ward; decreasing the air intake slows down the exhaust speed, reducing the negative pressure inside the ward.

[0027] The pressure regulating structure 2 includes a fixed base 21, a drive motor 22, and a worm gear 24. The fixed base 21 is fixedly connected to the upper surface of the exhaust pipe 11, and the worm gear 24 is fixedly connected to the outer surface of the connecting rod 18. The drive motor 22 is mounted on the outer surface of one side of the fixed base 21, and the output end of the drive motor 22 is connected to the inside of the outer surface of one side of the fixed base 21 by a bearing. The output end of the drive motor 22 is fixedly connected to a worm 23, and the outer surface of the worm 23 meshes with the outer surface of the worm gear 24. The model of the drive motor 22 is Σ-7A2H024P. After the drive motor 22 is started, its output end can drive the worm 23 to rotate. When the worm 23 rotates, it can drive the worm gear 24 and the connecting rod 18 to rotate synchronously, thereby driving the pressure regulating valve 17 to rotate synchronously. This design can conveniently and accurately adjust the air intake volume inside the exhaust pipe 11, thereby effectively reducing the workload of medical staff. Example 2

[0028] like Figures 1 to 5 As shown, this embodiment also proposes: a fixing structure 3, which includes a hinge 31, a fixing mesh 32, a connecting block 33, and a fixing block 36. One end of the hinge 31 is fixedly connected to the outer surface of one side of the other end of the exhaust pipe 11, and the other end of the hinge 31 is fixedly connected to the outer surface of one end of the fixing mesh 32. One side of the fixing mesh 32 is attached to the outer surface of the other end of the exhaust pipe 11, and one side of the fixing mesh 32 is attached to the surface of the other side of the filter cotton 16. The connecting block 33 is fixedly connected to the outer surface of the other side of the other end of the exhaust pipe 11, and one end of the connecting block 33 is fixedly connected to a connecting seat 34. A pull plate 35 is inserted into the interior of one side of the outer surface of the connecting seat 34. One end of the pull plate 35 is fixedly connected to a fixing block 36, and the fixing block 36 is inserted into the interior of the connecting seat 34. One side of the fixing block 36 is attached to the surface of the other side of the fixing mesh 32, and one end of the fixing block 36 is fixedly connected to... A pressure spring 37 is connected, with one end of the pressure spring 37 abutting against the inner surface of the connecting seat 34. The pressure spring 37 can use its own elasticity to push the fixing block 36 so that one side of its surface fits against the other side of the fixing net 32. At this time, the position of the fixing net 32 ​​and the position of the filter cotton 16 can be fixed. Without external force, the fixing block 36 will not move, thereby improving the stability of the fixing block 36 when fixing the fixing net 32. Pulling the pull plate 35 can drive the fixing block 36 to detach from the other side of the fixing net 32. At this time, the fixing net 32 ​​can be pulled so that one side of its surface detaches from the outer surface of the other end of the exhaust pipe 11. At this time, the fixing net 32 ​​will not obstruct the filter cotton 16. Then, the staff can easily remove the filter cotton 16 for replacement. This design makes it easier for the staff to replace the filter cotton 16 in a time-saving and labor-saving manner.

[0029] Working principle: When the equipment is in use, the fan 14 and drive motor 22 can be powered by an external power source. First, after the fan 14 starts, it will draw the air outside one end of the exhaust pipe 11 into the interior of the exhaust pipe 11. Then, after the drive motor 22 starts, it drives the worm gear 23 to rotate. Then, when the worm gear 23 rotates, it drives the worm wheel 24 and the connecting rod 18 to rotate synchronously, which can drive the pressure regulating valve 17 to rotate synchronously. At this time, the gap inside the exhaust pipe 11 can be adjusted. When the air intake is increased, the exhaust speed can be accelerated, thereby increasing the negative pressure inside the ward. When the air intake is decreased, the exhaust speed can be slowed down, thereby reducing the negative pressure inside the ward. Then, the filter cotton 16 can filter the airflow passing through it. Finally, the filtered airflow will be discharged out through the other end of the exhaust pipe 11.

[0030] When the filter cotton 16 needs to be replaced, first pull the pull plate 35 to move the fixing block 36 away from the surface of the other side of the fixing screen 32. Then pull the fixing screen 32 so that one side of its surface is detached from the outer surface of the other end of the exhaust pipe 11. Then, the staff can remove the filter cotton 16 for harmless treatment. Next, take out the new filter cotton 16 and place it inside the other end of the exhaust pipe 11, making it fit against the limiting ring 15. Then pull the pull plate 35 to move the fixing block 36 back into the connecting seat 34. Then pull the fixing screen 32 so that it fits against the surface of one side of the filter cotton 16. The outer surface of one end of the exhaust pipe 11 is attached, and then the pull plate 35 is released. Then, the pressure spring 37 will move by pushing the fixing block 36 with its own elasticity. Then, the surface of one side of the fixing block 36 will be attached to the surface of the other side of the fixing net 32. At this time, the position of the fixing net 32 ​​can be fixed. The above is the entire working principle of this utility model (the fan 14 and drive motor 22 used in this application are products that can be purchased directly on the market. Their principles, connection methods and control methods are existing technologies known to those skilled in the art, so they will not be described in detail here).

[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0033] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. Pressure regulating device for use in a negative pressure room, characterized in that Include: The main structure (1) includes exhaust pipe (11), limit ring (15), filter cotton (16) and connecting rod (18); The pressure regulating structure (2) includes fixed seat (21), drive motor (22) and worm (24), and the fixed seat (21) is fixedly connected to the upper surface of the exhaust pipe (11); The fixed structure (3) includes hinge (31), fixed screen (32), connecting block (33) and fixed block (36), and one end of the hinge (31) is fixedly connected with the outer surface of one side of the other end of the exhaust pipe (11), and the other end of the hinge (31) is fixedly connected with the outer surface of one end of the fixed screen (32).

2. The pressure regulating device for use in a negative pressure room according to claim 1, characterized in that: The mounting plate (12) is fixedly connected to the outer surface of the middle position of the exhaust pipe (11), and the protective net (13) is fixedly connected to the inside of one end of the exhaust pipe (11), and the fan (14) is installed in the inside of the exhaust pipe (11).

3. The pressure regulating device for use in a negative pressure room according to claim 1, characterized in that: The limit ring (15) is fixedly connected to the inner surface of the other end of the exhaust pipe (11), and the surface of one side of the filter cotton (16) is attached to the surface of one side of the limit ring (15).

4. The pressure regulating device for use in a negative pressure room according to claim 1, characterized in that: The pressure regulating valve (17) is hingedly connected to the inside of the exhaust pipe (11), the connecting rod (18) is fixedly connected to the upper end of the pressure regulating valve (17), and the connecting rod (18) is hingedly connected to the inside of the upper surface of the exhaust pipe (11).

5. The pressure regulating device for use in a negative pressure room of claim 1, wherein: The worm (24) is fixedly connected to the outer surface of the connecting rod (18), the drive motor (22) is installed on the outer surface of one side of the fixed seat (21), and the output end bearing of the drive motor (22) is connected to the inside of the outer surface of one side of the fixed seat (21), the output end of the drive motor (22) is fixedly connected with the worm (23), and the outer surface of the worm (23) and the outer surface of the worm (24) are engaged with each other.

6. The pressure regulating device for use in a negative pressure room of claim 1, wherein: The surface of one side of the fixed screen (32) is attached to the outer surface of the other end of the exhaust pipe (11), and the surface of one side of the fixed screen (32) is attached to the surface of the other side of the filter cotton (16).

7. The pressure regulating device for use in a negative pressure room of claim 1, wherein: The connecting block (33) is fixedly connected to the outer surface of the other side of the other end of the exhaust pipe (11), one end of the connecting block (33) is fixedly connected with the connecting seat (34), and the pull plate (35) is inserted into the inside of one side of the outer surface of the connecting seat (34), one end of the pull plate (35) is fixedly connected with the fixed block (36), the fixed block (36) is inserted into the inside of the connecting seat (34), and the surface of one side of the fixed block (36) is attached to the surface of the other side of the fixed screen (32), one end of the fixed block (36) is fixedly connected with the pressure spring (37), and one end of the pressure spring (37) abuts against the inner surface of the connecting seat (34).

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