A ventilator filtration device

Abstract

This utility model relates to the field of ventilator technology and discloses a ventilator filtration device. Its features include a filtration unit, a filtration assembly, and a sealing structure. The filtration assembly and sealing structure are respectively installed inside the filtration unit. The filtration unit includes a lower housing. The filtration assembly includes a mounting bracket, a limiting block, an outer frame, a first filter screen, and a second filter screen. The outer frame and the first filter screen are mounted on the mounting bracket via slots and the limiting block. The second filter screen has a smaller pore size than the first filter screen and is installed inside the lower housing. The lower housing is equipped with several baffles and heating wires. This utility model, through its filtration assembly, filters the gas through the first and second filter screens, uses baffles to block the gas flow, and preheats the gas inside the lower housing using heating wires. This effectively regulates the gas temperature, preventing discomfort caused by direct inhalation of low-temperature gas and improving user comfort and compliance.

Description

Technical Field

[0001] This utility model relates to the field of ventilator technology, and in particular to a ventilator filtration device. Background Technology

[0002] In modern clinical medicine, ventilators, as an effective means of artificially replacing spontaneous ventilation, are widely used in respiratory failure caused by various reasons, anesthetic respiratory management during major surgery, respiratory support therapy, and emergency resuscitation. They occupy a very important position in the field of modern medicine. Ventilators are a crucial medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives.

[0003] An investigation revealed that a Chinese utility model discloses a ventilator filtration device (publication number: CN221332332U). Although the aforementioned patent facilitates water heating and gas heating through the combined use of a connecting pipe and an electric heating wire, making it easier to adjust the gas temperature, the activated carbon placed on the filter screen can cause fine activated carbon residue to clog the microporous structure of the filter material, affecting filtration efficiency. Furthermore, the filter screen is not easily removable, increasing maintenance time and costs. Utility Model Content

[0004] In view of the problems mentioned above, such as the fact that fine residues of existing activated carbon can clog the microporous structure of filter materials, affecting filtration efficiency, and that the filter screen cannot be easily disassembled, increasing maintenance time and costs, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a ventilator filtration device, the purpose of which is that: fine residue of activated carbon will block the microporous structure of the filter material, affecting the filtration efficiency, and the filter screen cannot be easily disassembled, which increases maintenance time and maintenance costs.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a ventilator filtration device, characterized in that: it includes a filtration device, a filtration assembly, and a closed structure, wherein the filtration assembly and the closed structure are respectively installed inside the filtration device, the filtration device includes a lower housing, the filtration assembly includes a mounting frame, a limiting block, an outer frame, a first filter screen, and a second filter screen, the outer frame and the first filter screen are mounted on the mounting frame through slots and the limiting block, the aperture of the second filter screen is smaller than that of the first filter screen, the second filter screen is installed inside the lower housing, and the lower housing is equipped with several baffles and heating wires.

[0007] In a preferred embodiment of the ventilator filtration device of this utility model, the filtration device includes an upper housing and a connecting block. The connecting block is fixedly installed on the outer wall of the upper housing and the lower housing, and the upper housing and the lower housing are fixedly connected by the connecting block.

[0008] In a preferred embodiment of the ventilator filtration device of this utility model, an air inlet pipe is fixedly installed at the top of the upper housing and is connected to the interior of the upper housing; an air outlet pipe is fixedly installed at the bottom of the lower housing and is connected to the interior of the lower housing.

[0009] In a preferred embodiment of the ventilator filtration device of this utility model, the mounting bracket is fixedly installed on the inner walls of the upper and lower housings respectively, the slot is disposed in the mounting bracket, a plurality of limiting blocks are disposed and installed on the mounting bracket at equal intervals, and the first filter screen is fixedly installed inside the outer frame.

[0010] As a preferred embodiment of the ventilator filtration device of this utility model, (copying is permitted).

[0011] In a preferred embodiment of the ventilator filtration device of this utility model, the baffle is fixedly installed inside the lower housing, and the heating wire is installed inside the lower housing and at the bottom of the baffle.

[0012] In a preferred embodiment of the ventilator filtration device of this utility model, the closed structure includes a connecting rod, a fixed plate, a sliding column, and a spring. The fixed plate is fixedly installed inside the upper housing via the connecting rod. The sliding column is slidably installed inside the fixed plate. An mounting plate is fixedly installed at the top of the sliding column. A diaphragm is fixedly installed on the mounting plate. The spring is sleeved on the sliding column. One end of the spring is fixedly connected to the mounting plate, and the other end of the spring is fixedly connected to the fixed plate.

[0013] The beneficial effects of this utility model are: 1. Through the set filter components, the gas is filtered through the first filter and the second filter. The gas is blocked by the baffle and the gas in the lower housing is preheated by the heating wire. The gas temperature can be effectively regulated to prevent discomfort caused by direct inhalation of low-temperature gas, thereby improving user comfort and compliance. The dual-layer filtration helps to disperse the pollutant load and improve the overall filtration effect. The limit block no longer limits the external frame, so it is easy to remove the first and second filters. This significantly simplifies the maintenance process and improves the maintainability and ease of operation of the first and second filters, making it easy to replace. 2. Through the designed closed structure, gas stops entering from the inlet pipe, and the mounting plate automatically resets under the elastic force of the spring, so that the diaphragm automatically blocks the bottom of the inlet pipe, effectively forming a one-way airflow path. This can achieve one-way isolation of breathing gas and system-level protection, preventing the patient's exhaled gas or humid air from flowing back into the inlet pipe, thereby protecting the safety and cleanliness of the ventilator main unit or oxygen supply system. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the upper shell of this utility model; Figure 3 This is a schematic diagram of the mounting bracket of this utility model; Figure 4 This is a schematic diagram of the first filter screen of this utility model; Figure 5 This is a bottom sectional view of the lower shell of this utility model; Figure 6 This is a schematic diagram of the closed structure of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Filtering equipment; 11. Upper housing; 12. Inlet pipe; 13. Lower housing; 14. Outlet pipe; 15. Connecting block; 2. Filter assembly; 21. Mounting bracket; 22. Slot; 23. Limiting block; 24. External frame; 25. First filter screen; 26. Second filter screen; 27. Baffle plate; 28. Heating wire; 3. Enclosed structure; 31. Connecting rod; 32. Fixing plate; 33. Sliding column; 34. Mounting plate; 35. Diaphragm; 36. Spring. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Example 1 Refer to attached figure Figure 1 - Appendix Figure 5This is the first embodiment of the present invention, which provides a ventilator filtration device, including a filtration device 1, a filtration assembly 2, and a sealing structure 3. The filtration assembly 2 and the sealing structure 3 are respectively installed inside the filtration device 1. The filtration device 1 includes an upper shell 11, a lower shell 13, and a connecting block 15. The connecting block 15 is fixedly installed on the outer wall of the upper shell 11 and the lower shell 13, and the upper shell 11 and the lower shell 13 are fixedly connected by the connecting block 15. An air inlet pipe 12 is fixedly installed at the top of the upper shell 11, and the air inlet pipe 12 is interconnected with the interior of the upper shell 11. An air outlet pipe 14 is fixedly installed at the bottom of the lower shell 13, and the air outlet pipe 14 is interconnected with the interior of the lower shell 13.

[0018] The filter assembly 2 includes a mounting bracket 21, a limiting block 23, an outer frame 24, a first filter screen 25, and a second filter screen 26. The mounting bracket 21 is fixedly installed on the inner walls of the upper housing 11 and the lower housing 13, respectively. The mounting bracket 21 is provided with a slot 22. Several limiting blocks 23 are provided and installed on the mounting bracket 21 at equal intervals. The first filter screen 25 is fixedly installed inside the outer frame 24. The outer frame 24 and the first filter screen 25 are locked in the slot 22, and the limiting blocks 23 limit the outer frame 24. The aperture of the second filter screen 26 is smaller than that of the first filter screen 25. The second filter screen 26 is installed inside the lower housing 13. The installation method of the second filter screen 26 is the same as that of the first filter screen 25. Several baffles 27 are installed inside the lower housing 13. Heating wires 28 are installed inside the lower housing 13 and at the bottom of the baffles 27.

[0019] During use, the connecting block 15 is fixed with bolts, thereby connecting the upper housing 11 and the lower housing 13, connecting the air inlet pipe 12 to the ventilator, and connecting the breathing mask to the air outlet pipe 14. During breathing, gas from the ventilator enters the upper housing 11 through the air inlet pipe 12, is filtered by the first filter 25 and the second filter 26, and then supplied to the user. When the gas enters the lower housing 13, it is blocked by the baffle 27, reducing the gas flow rate. The heating wire 28 is then activated, and the heating wire 28 heats the lower housing 11. The gas inside is preheated to prevent large temperature differences from causing discomfort to the user. When the first filter screen 25 and the second filter screen 26 have been used for a long time and have accumulated a lot of impurities, affecting the filtration efficiency, the bolt is removed from the connecting block 15 to separate the upper housing 11 and the lower housing 13. Then, the limiting block 23 is rotated so that the limiting block 23 no longer limits the external frame 24, thus making it easy to remove the first filter screen 25 and the second filter screen 26 and replace them with new ones.

[0020] Example 2 Refer to attached figure Figure 2 and attached Figure 6This is the second embodiment of the present invention, which differs from the first embodiment in that: The closed structure 3 includes a connecting rod 31, a fixed plate 32, a sliding column 33, and a spring 36. The fixed plate 32 is fixedly installed inside the upper housing 11 via the connecting rod 31. The sliding column 33 is slidably installed inside the fixed plate 32. The top of the sliding column 33 is fixedly installed with a mounting plate 34. A diaphragm 35 is fixedly installed on the mounting plate 34. The diaphragm 35 seals the air intake pipe 12. The spring 36 is sleeved on the sliding column 33. One end of the spring 36 is fixedly connected to the mounting plate 34, and the other end of the spring 36 is fixedly connected to the fixed plate 32.

[0021] During use, when gas enters the ventilator through the inlet tube 12, the gas presses the diaphragm 35. The diaphragm 35 slides in the fixed plate 32 by pressing the sliding column 33 through the mounting plate 34, while simultaneously compressing the spring 36. The diaphragm 35 separates from the bottom of the inlet tube 12, allowing gas to enter the upper shell 11. When breathing is no longer needed, gas stops entering through the inlet tube 12, and the mounting plate 34 automatically resets under the elastic force of the spring 36, causing the diaphragm 35 to automatically block the bottom of the inlet tube 12, preventing gas from entering the inlet tube 12 and preventing gas backflow.

[0022] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A ventilator filtration device, characterized in that: The filter includes a filter device (1), a filter assembly (2), and a closed structure (3). The filter assembly (2) and the closed structure (3) are respectively installed inside the filter device (1). The filter device (1) includes a lower housing (13). The filter assembly (2) includes a mounting bracket (21), a limiting block (23), an outer frame (24), a first filter screen (25), and a second filter screen (26). The outer frame (24) and the first filter screen (25) are installed on the mounting bracket (21) through a slot (22) and a limiting block (23). The aperture of the second filter screen (26) is smaller than that of the first filter screen (25). The second filter screen (26) is installed inside the lower housing (13). The lower housing (13) is equipped with several baffles (27) and heating wires (28).

2. The ventilator filtration device according to claim 1, characterized in that: The filtration device (1) includes an upper housing (11) and a connecting block (15). The connecting block (15) is fixedly installed on the outer wall of the upper housing (11) and the lower housing (13), and the upper housing (11) and the lower housing (13) are fixedly connected by the connecting block (15).

3. The ventilator filtration device according to claim 2, characterized in that: An air inlet pipe (12) is fixedly installed at the top of the upper housing (11), and the air inlet pipe (12) and the interior of the upper housing (11) are interconnected. An air outlet pipe (14) is fixedly installed at the bottom of the lower housing (13), and the air outlet pipe (14) and the interior of the lower housing (13) are interconnected.

4. The ventilator filtration device according to claim 1, characterized in that: The mounting bracket (21) is fixedly installed on the inner walls of the upper shell (11) and the lower shell (13), respectively. The slot (22) is set in the mounting bracket (21). Several limiting blocks (23) are set and installed on the mounting bracket (21) at equal intervals. The first filter screen (25) is fixedly installed inside the outer frame (24).

5. The ventilator filtration device according to claim 4, characterized in that: The spoiler (27) is fixedly installed inside the lower housing (13), and the heating wire (28) is installed inside the lower housing (13) and at the bottom of the spoiler (27).

6. The ventilator filtration device according to claim 5, characterized in that: The closed structure (3) includes a connecting rod (31), a fixed plate (32), a sliding column (33), and a spring (36). The fixed plate (32) is fixedly installed inside the upper housing (11) via the connecting rod (31). The sliding column (33) is slidably installed inside the fixed plate (32). An installation plate (34) is fixedly installed at the top of the sliding column (33). A diaphragm (35) is fixedly installed on the installation plate (34). The spring (36) is sleeved on the sliding column (33). One end of the spring (36) is fixedly connected to the installation plate (34), and the other end of the spring (36) is fixedly connected to the fixed plate (32).

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