Filtering device for medical breathing machine

Abstract

The utility model discloses a filtering device for a medical breathing machine, and particularly relates to the technical field of breathing machine filtering, the filtering device comprises a device shell, an air inlet filtering part is arranged on the inner side of the device shell, and an exhaust disinfection part is arranged behind the air inlet filtering part. The left ends and the right ends of the exhaust disinfection component and the air inlet filtering component extend to the outer side of the device shell, and the top end of the device shell can be opened and closed. According to the filtering device for the medical breathing machine, impurities on the filtering moving plate can be cleaned through a silica gel cleaning brush in the driving and collecting assembly, the driving and collecting assembly is taken out for cleaning, it is guaranteed that the filtering device is not blocked by dust in the subsequent filtering process, and therefore the continuous working performance of the filtering device is remarkably improved, and the service life of the filtering device is prolonged. In addition, exhaled air can be filtered and disinfected through cooperation of a cleaning filter element and a disinfection filter element contained in a collection and disinfection pipe in the exhaust and disinfection component, and pathogens and harmful substances in the exhaled air are effectively removed.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilator filtration, in particular to a filtration device for a medical ventilator. Background Art

[0002] A medical ventilator is an important device widely used in the medical field. It is used to assist or replace the patient's spontaneous breathing function. It mainly provides appropriate ventilation support to the patient through mechanical means. When the patient's own respiratory function is impaired and cannot meet the body's demand for oxygen or cannot effectively expel carbon dioxide, the medical ventilator will provide assistance. The filter device of the medical ventilator is a vital and indispensable component of the ventilator system.

[0003] Chinese patent document CN215351356U discloses a filtering device for a ventilator, comprising a casing with an air inlet, the interior of the air inlet being provided with a step portion, and the interior of the air inlet being arranged as an internal threaded structure, the internal thread of the air inlet being connected to a filter shell, the interior of the filter shell being provided with a filter membrane, the exterior of the filter membrane being provided with a frame, the internal thread of the filter shell being connected to an internal threaded part with a hollow structure, one side of the internal threaded part and the inner side of the filter shell being provided with an installation groove matching the frame, the interior of the installation groove and the surface of the step portion being bonded with a sealing gasket.

[0004] Although the device described in the above-mentioned document can improve the overall sealing performance, it does not have any internal components for filtering exhaled gas. As a result, the device may release gas containing pathogens into the environment during auxiliary filtration, which may easily cause the spread of viruses. In addition, due to the size limitation, the device cannot perform multi-stage filtration and collection of air. After prolonged use, excessive dust may clog the filter element, reducing the efficiency of filtration and output. Utility Model Content

[0005] The purpose of the present utility model is to provide a filtering device for a medical ventilator to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a filtering device for a medical ventilator, comprising a device housing, an air intake filter component is arranged on the inner side of the device housing, an exhaust disinfection component is arranged behind the air intake filter component, the left and right ends of the exhaust disinfection component and the air intake filter component extend to the outside of the device housing, and the top of the device housing can be opened and closed.

[0007] Preferably, the air intake filter component includes an air intake negative pressure pipe, the bottom end of the air intake negative pressure pipe is fixedly connected to the bottom end of the inner side of the device shell, the middle part of the air intake negative pressure pipe is fixedly connected to a pre-filter pressure assembly, the interior of the pre-filter pressure assembly is rotatably connected to a drive collection assembly, the right end of the air intake negative pressure pipe extends to the outside of the device shell, the left end of the air intake negative pressure pipe is fixedly connected to a filter purification box, the bottom end of the filter purification box is fixedly connected to the bottom end of the inner side of the device shell, the top of the filter purification box is fixedly connected to a breathing air intake pipe, and the left end of the breathing air intake pipe extends to the outside of the device shell.

[0008] Preferably, the pre-filter pressure assembly includes an assembly outer frame plate, the bottom of the assembly outer frame plate is intercepted in the middle of the air intake negative pressure pipe, and air inlets connected to the air intake negative pressure pipe are opened on the left and right sides below the assembly outer frame plate. A central connecting shaft is fixedly and rotatably connected to the middle of the inner side of the assembly outer frame plate, and two filter movable plates are rotatably connected to the outer surface of the central connecting shaft. The filter movable plate is wider than the air outlet, and the filter movable plate passes through the interior of the drive collection assembly. The lower inner side of the assembly outer frame plate rotates on the outer surface of the drive collection assembly.

[0009] Preferably, the drive collection component includes a drive inner disk, which is rotatably connected to the lower inner side of the component outer frame disk, and a drive shaft is fixedly connected to the middle of the rear end of the drive inner disk. The drive inner disk is provided with two receiving grooves that can pass through the filter movable plate, and two silicone cleaning brushes that are tightly attached to the upper and lower sides of the filter movable plate are fixedly connected to the inner side of the receiving groove. The rear end of the drive shaft passes through the component outer frame disk and extends to the outside, and a drive motor is provided at the rear end of the drive shaft.

[0010] Preferably, the diameter of the driving inner disk is smaller than that of the component outer frame disk, the driving inner disk and the center of the component outer frame disk are vertically parallel and tangent to the component outer frame disk.

[0011] Preferably, the exhaust and disinfection component includes an exhaust collecting pipe, the left end of the exhaust collecting pipe extends to the outside of the device casing, the end of the exhaust collecting pipe away from the device casing is fixedly connected to the collecting and disinfection pipe, and the right side below the collecting and disinfection pipe is fixedly connected to an exhaust pipe opening, and the exhaust pipe opening extends to the outside of the device casing away from the end of the collecting and disinfection pipe.

[0012] Preferably, the collection and disinfection tube includes a rotating fixed column, a pulling handle is fixedly connected to the middle part of the top of the rotating fixed column, a collection tube shell is threadedly connected to the lower part of the outer surface of the rotating fixed column, a cleaning filter core is fixedly connected to the left side of the bottom end of the rotating fixed column, and a disinfection filter core is fixedly connected to the right side of the bottom end of the rotating fixed column. The upper left side of the outer surface of the collection tube shell is fixedly connected to the right end of the exhaust collection tube, and the lower right side of the outer surface of the collection tube shell is fixedly connected to the left end of the exhaust pipe outlet.

[0013] Preferably, the interception density of the cleaning filter core is greater than that of the disinfection filter core, and the front and rear ends of the cleaning filter core and the disinfection filter core are both tightly attached to the inner wall of the collection tube shell.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model can pre-filter the air through the pre-filter pressure component, clean the impurities on the filter movable plate through the silicone cleaning brush in the drive collection component, and take out the drive collection component for cleaning, ensuring that the subsequent filtration will not be blocked by dust, thereby significantly improving the continuous working performance of the filter device. The pre-filter pressure component and the drive collection component work together with an efficient cleaning effect to improve the continuity of filtration.

[0016] 2. The utility model can filter and disinfect the exhaled gas through the collection and disinfection tube in the exhaust disinfection component, which includes a cleaning filter element and a disinfection filter element, effectively removing pathogens and harmful substances in the exhaled gas, and working together with the air intake filter component to fully ensure the safety of the gas discharged by the ventilator, prevent the spread and infection of viruses, and increase the purity and safety of the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the air intake filter component of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the pre-filter pressure component of the utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the drive collection component of the utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the exhaust and disinfection component of the utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the collection and disinfection tube of the utility model.

[0023] In the figure: 1. Device housing; 2. Air intake filter component; 21. Breathing air intake pipe; 22. Filter purification box; 23. Pre-filter pressure assembly; 231. Assembly outer frame plate; 232. Center connecting shaft; 233. Filter movable plate; 24. Air intake negative pressure pipe; 25. Drive collection assembly; 251. Drive inner disk; 252. Silicone cleaning brush; 253. Drive shaft; 3. Exhaust disinfection component; 31. Exhaust collection pipe; 32. Collection disinfection pipe; 321. Pull-out handle; 322. Rotating fixed column; 323. Collection pipe housing; 324. Cleaning filter element; 325. Disinfection filter element; 33. Exhaust pipe outlet; DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 The utility model provides a technical solution for a filtering device for a medical ventilator: a filtering device for a medical ventilator, comprising a device housing 1, an air intake filter component 2 being arranged on the inside of the device housing 1, external air enters the air intake filter component 2 to be filtered and output to the outside, an exhaust disinfection component 3 is arranged behind the air intake filter component 2, and the exhaust disinfection component 3 can filter and disinfect the patient's exhaled gas to ensure the safety of the exhaust gas, and the left and right ends of the exhaust disinfection component 3 and the air intake filter component 2 are extended to the outside of the device housing 1, and the top of the device housing 1 can be opened and closed, and the top of the device housing 1 can be opened and closed, which is convenient for maintenance, replacement and cleaning of the internal air intake filter component 2 and the exhaust disinfection component 3, and ventilation fans are arranged at the air outlets of the air intake filter component 2 and the exhaust disinfection component 3 to drive and guide the air movement.

[0026] See also Figure 2 The air intake filter component 2 includes an air intake negative pressure pipe 24, the bottom end of the air intake negative pressure pipe 24 is fixedly connected to the bottom end of the inner side of the device housing 1, the middle part of the air intake negative pressure pipe 24 is fixedly connected to the pre-filter pressure component 23, the pre-filter pressure component 23 is rotatably connected to the drive collection component 25, the right end of the air intake negative pressure pipe 24 extends to the outside of the device housing 1, the left end of the air intake negative pressure pipe 24 is fixedly connected to the filter purification box 22, the bottom end of the filter purification box 22 is fixedly connected to the bottom end of the inner side of the device housing 1, the top of the filter purification box 22 is fixedly connected to the breathing air intake pipe 21, and the left end of the breathing air intake pipe 21 extends to the outside of the device housing 1.

[0027] The air intake negative pressure pipe 24 draws the outside air into the interior under the negative pressure formed by the ventilation fan, and performs preliminary filtration when passing through the pre-filter pressure component 23 and the drive collection component 25 to intercept large particles in the air and prevent clogging of subsequent filter components. The air is collected by the drive collection component 25. The air after preliminary filtration enters the filter purification box 22 for comprehensive and standardized filtration and purification to adsorb harmful particles, and then the purified air is output through the breathing intake pipe 21.

[0028] See also Figure 3The pre-filter pressure assembly 23 includes an assembly outer frame plate 231. The bottom of the assembly outer frame plate 231 is intercepted in the middle of the air intake negative pressure pipe 24. Air inlets connected to the air intake negative pressure pipe 24 are opened on the left and right sides below the assembly outer frame plate 231. A central connecting shaft 232 is fixedly and rotatably connected to the middle of the inner side of the assembly outer frame plate 231. Two filter movable plates 233 are rotatably connected to the outer surface of the central connecting shaft 232. The filter movable plate 233 is wider than the air outlet. The filter movable plate 233 passes through the interior of the drive collection assembly 25. The lower inner side of the assembly outer frame plate 231 rotates on the outer surface of the drive collection assembly 25.

[0029] See also Figure 4 The driving collection component 25 includes a driving inner disk 251, which is rotatably connected to the lower inner side of the component outer frame disk 231. A driving shaft 253 is fixedly connected to the middle of the rear end of the driving inner disk 251. The driving inner disk 251 is provided with two receiving grooves that can pass through the filter movable plate 233. Two silicone cleaning brushes 252 that are close to the upper and lower sides of the filter movable plate 233 are fixedly connected to the inner side of the receiving groove. The rear end of the driving shaft 253 passes through the component outer frame disk 231 and extends to the outside. A driving motor is provided at the rear end of the driving shaft 253.

[0030] See also Figure 3 and Figure 4 The diameter of the driving inner disk 251 is smaller than that of the component outer frame disk 231 , the driving inner disk 251 is parallel to the center of the component outer frame disk 231 and the driving inner disk 251 is tangent to the component outer frame disk 231 .

[0031] The air enters the outer frame disc 231 of the component through the air intake negative pressure pipe 24. Since the outer frame disc 231 of the component is tangent to the bottom of the driving inner disc 251, the air can only pass through the upper inner side of the outer frame disc 231. The driving inner disc 251 is driven by the driving shaft 253 to rotate in the opposite direction of the air flow. During the rotation of the filter movable plate 233, the air passing through can be filtered because it is in the opposite direction of the air. The filter movable plate 233 is driven by the rotation of the receiving groove with the central connecting shaft 232 as the center of the circle. Rotation. During the rotation process, since the rotation center of the filter movable plate 233 is different from that of the driving inner disk 251, the filter movable plate 233 will be completely retracted into the driving inner disk 251 when passing the tangent point, and will gradually pop out after passing the tangent point. During the retraction and pop-up period, the silicone cleaning brush 252 cleans the outer surface of the filter movable plate 233 and collects dust particles into the driving inner disk 251. At the same time, the distance of the air inlet can be maintained so that there is always a filter movable plate 233 in the upper space to filter the air.

[0032] See also Figure 5The exhaust and disinfection component 3 includes an exhaust collecting pipe 31, the left end of the exhaust collecting pipe 31 extends to the outside of the device housing 1, the end of the exhaust collecting pipe 31 away from the device housing 1 is fixedly connected to the collecting and disinfecting pipe 32, and the right side below the collecting and disinfecting pipe 32 is fixedly connected to an exhaust pipe opening 33, and the end of the exhaust pipe opening 33 away from the collecting and disinfecting pipe 32 extends to the outside of the device housing 1. The exhaled gas passes through the exhaust collecting pipe 31 under the guidance of the negative pressure of the exhaust fan, enters the collecting and disinfecting pipe 32, filters and disinfects the exhaled gas, and then discharges the exhaled gas through the exhaust pipe opening 33.

[0033] See also Figure 6 The collecting and disinfecting tube 32 includes a rotating fixed column 322, a pulling handle 321 is fixedly connected to the middle part of the top of the rotating fixed column 322, a collecting tube shell 323 is threadedly connected to the lower outer surface of the rotating fixed column 322, a cleaning filter core 324 is fixedly connected to the left side of the bottom end of the rotating fixed column 322, and a disinfecting filter core 325 is fixedly connected to the right side of the bottom end of the rotating fixed column 322. The upper left side of the outer surface of the collecting tube shell 323 is fixedly connected to the right end of the exhaust collecting tube 31, and the lower right side of the outer surface of the collecting tube shell 323 is fixedly connected to the left end of the exhaust pipe port 33. The interception density of the cleaning filter core 324 is greater than that of the disinfecting filter core 325, and the front and rear ends of the cleaning filter core 324 and the disinfecting filter core 325 are both tightly attached to the inner wall of the collecting tube shell 323.

[0034] The cleaning filter element 324 and the disinfection filter element 325 can ensure that the gas must be discharged. The exhaled gas can be filtered through the cleaning filter element 324 and the viruses and bacteria can be preliminarily filtered out. When it touches the disinfection filter element 325, it is intercepted and disinfected, so that the viruses and bacteria are filtered between the cleaning filter element 324 and the disinfection filter element 325. Then, the fixed column 322 can be rotated by pulling the handle 321 and the cleaning filter element 324 and the disinfection filter element 325 can be lifted to replace the filter element, thereby ensuring that the discharged respiratory gas will not pollute the environment and cause infection.

[0035] Working principle:

[0036] First, after starting the ventilator, air will be sucked into the pre-filter pressure component 23 from the air intake negative pressure pipe 24, and the air will be initially filtered under the drive of the collection component 25, and then the air will be further cleaned through the filter purification box 22. Finally, the filtered air will be output through the breathing air intake pipe 21, and then the gas exhaled by the patient will pass through the exhaust collection pipe 31 and the collection and disinfection pipe 32 for disinfection and filtration, and then discharged through the exhaust pipe port 33. When replacement is needed, you only need to open the top of the device housing 1 and rotate the pull-out handle 321 to replace the cleaning filter element 324 and the disinfection filter element 325.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for a medical ventilator, comprising a device housing (1), characterized in that: An air intake filter component (2) is provided inside the device housing (1), and an exhaust disinfection component (3) is provided behind the air intake filter component (2). Both left and right ends of the exhaust disinfection component (3) and the air intake filter component (2) extend to the outside of the device housing (1), and the top end of the device housing (1) can be opened and closed.

2. A filter device for a medical ventilator according to claim 1, characterized in that: The air intake filter component (2) comprises an air intake negative pressure pipe (24), the bottom end of the air intake negative pressure pipe (24) is fixedly connected to the bottom end of the inner side of the device housing (1), the middle part of the air intake negative pressure pipe (24) is fixedly connected to a pre-filter pressure assembly (23), the interior of the pre-filter pressure assembly (23) is rotatably connected to a drive collection assembly (25), the right end of the air intake negative pressure pipe (24) extends to the outside of the device housing (1), the left end of the air intake negative pressure pipe (24) is fixedly connected to a filter purification box (22), the bottom end of the filter purification box (22) is fixedly connected to the bottom end of the inner side of the device housing (1), the top end of the filter purification box (22) is fixedly connected to a breathing air intake pipe (21), and the left end of the breathing air intake pipe (21) extends to the outside of the device housing (1).

3. A filter device for a medical ventilator according to claim 2, characterized in that: The pre-filter pressure assembly (23) comprises an assembly outer frame disc (231), the bottom of the assembly outer frame disc (231) is intercepted in the middle of the air intake negative pressure pipe (24), and air inlets connected to the air intake negative pressure pipe (24) are provided on the left and right sides below the assembly outer frame disc (231). A central connecting shaft (232) is fixedly and rotatably connected to the middle of the inner side of the assembly outer frame disc (231), and two filter movable plates (233) are rotatably connected to the outer surface of the central connecting shaft (232). The filter movable plates (233) are wider than the air outlet, and the filter movable plates (233) pass through the interior of the drive collection assembly (25). The inner side of the assembly outer frame disc (231) is rotated on the outer surface of the drive collection assembly (25).

4. A filter device for a medical ventilator according to claim 3, characterized in that: The driving collection component (25) comprises a driving inner disk (251), the driving inner disk (251) is rotatably connected to the lower inner side of the component outer frame disk (231), a driving shaft (253) is fixedly connected to the middle of the rear end of the driving inner disk (251), the driving inner disk (251) is provided with two receiving grooves that can pass through the filter movable plate (233), two silicone cleaning brushes (252) that are closely attached to the upper and lower sides of the filter movable plate (233) are fixedly connected to the inner sides of the receiving grooves, the end of the silicone cleaning brush (252) away from the driving inner disk (251) is closely attached to the outer surface of the filter movable plate (233), the rear end of the driving shaft (253) passes through the component outer frame disk (231) and extends to the outside, and the rear end of the driving shaft (253) is provided with a driving motor.

5. A filter device for a medical ventilator according to claim 4, characterized in that: The driving inner disk (251) has a smaller diameter than the component outer frame disk (231), the driving inner disk (251) and the component outer frame disk (231) are vertically parallel to each other in center, and the driving inner disk (251) and the component outer frame disk (231) are tangent to each other.

6. The filter device for a medical ventilator according to claim 1, characterized in that: The exhaust and disinfection component (3) comprises an exhaust collection pipe (31), the left end of the exhaust collection pipe (31) extends to the outside of the device housing (1), the end of the exhaust collection pipe (31) away from the device housing (1) is fixedly connected to a collection and disinfection pipe (32), the right side below the collection and disinfection pipe (32) is fixedly connected to an exhaust pipe opening (33), and the exhaust pipe opening (33) extends to the outside of the device housing (1) away from the end of the collection and disinfection pipe (32).

7. A filter device for a medical ventilator according to claim 6, characterized in that: The collection and disinfection pipe (32) comprises a rotating fixed column (322), a pull-out handle (321) is fixedly connected to the middle of the top of the rotating fixed column (322), a collection pipe shell (323) is threadedly connected to the lower part of the outer surface of the rotating fixed column (322), a cleaning filter core (324) is fixedly connected to the left side of the bottom end of the rotating fixed column (322), and a disinfection filter core (325) is fixedly connected to the right side of the bottom end of the rotating fixed column (322), the upper left side of the outer surface of the collection pipe shell (323) is fixedly connected to the right end of the exhaust collection pipe (31), and the lower right side of the outer surface of the collection pipe shell (323) is fixedly connected to the left end of the exhaust pipe port (33).

8. The filter device for a medical ventilator according to claim 7, characterized in that: The interception density of the cleaning filter core (324) is greater than that of the disinfecting filter core (325), and the front and rear ends of the cleaning filter core (324) and the disinfecting filter core (325) are both tightly attached to the inner wall of the collecting tube shell (323).

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