A ventilator filtration device

Abstract

This utility model discloses a ventilator filtration device, relating to the field of medical device technology. The ventilator filtration device includes a housing, with a cover plate on top of the housing. A protective shell is fixedly connected to the surface of the cover plate. A groove is formed inside the protective shell. A first rotating plate is rotatably connected inside the cover plate, with its surface in contact with the surface of the protective shell. A second rotating plate is fixedly connected to the surface of the first rotating plate and rotatably connected to the inside of the cover plate. Mounting holes are formed inside both the first and second rotating plates. This ventilator filtration device allows for adjustment of the exposed filter element by rotating a rotating rod. Simultaneously, the protective shell covers unused filter elements, preventing excess filter elements from being exposed to the outside environment and thus preventing dust from covering the filter element interface, thereby protecting the filter element.

Description

Technical Field

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

[0002] With the continuous development of science and technology, various medical devices have emerged, making it possible for the continuous advancement of medical standards. 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, occupying a very important position in the field of modern medicine.

[0003] Publication number CN218530238U proposes a ventilator filter device. Utilizing the cooperation of an upper tube and connector, it facilitates connection between the device and the ventilator. The device allows for rotation of the appropriate filter element based on the patient's symptoms. Multiple filters can be used to change the filter element as needed based on the patient's condition, improving treatment effectiveness. Positioning bolts allow for the removal of the cover plate for easy cleaning of the filter element. The cooperation of fixing posts and retaining rings reinforces the filter element, improving its stability. This addresses the problem in the aforementioned patent where the ventilator only had one filter element, preventing the use of a different filter element based on the patient's respiratory symptoms and reducing treatment efficiency.

[0004] However, during the use of this device, because it has multiple filter cartridges and the interfaces of the corresponding filter cartridges are all located on the outside of the device, when the device uses the required filter cartridge, the interfaces of the other filter cartridges are exposed to the outside environment. As a result, dust comes into contact with the interfaces of the filter cartridges, and the exposed interfaces need to be cleaned every time the filter cartridges need to be used, which is too troublesome. Therefore, a ventilator filtration device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a ventilator filtration device that can solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ventilator filtration device, comprising a housing, a cover plate disposed on the top of the housing, a protective shell fixedly connected to the surface of the cover plate, a groove formed inside the protective shell, a first rotating plate rotatably connected inside the cover plate, the surface of the first rotating plate contacting the surface of the protective shell, a second rotating plate fixedly connected to the surface of the first rotating plate, the second rotating plate rotatably connected to the inside of the cover plate, and mounting holes formed inside both the first and second rotating plates, wherein a filter element is installed inside the mounting holes.

[0007] Preferably, a worm gear is fixedly connected to the surface of the second rotating plate, a mounting block is fixedly connected to the surface of the cover plate, a rotating rod is rotatably connected inside the mounting block, a worm is fixedly connected to the surface of the rotating rod, and the surface of the worm meshes with the surface of the worm gear.

[0008] Preferably, the surface of the cover plate is provided with a through groove, and a portion of the worm gear is located in the through groove.

[0009] Preferably, the bottom of the housing is also rotatably connected to a first rotating plate, and the lower end of the filter element is installed inside the first rotating plate at the bottom of the housing.

[0010] Preferably, a fixing plate is fixedly connected to the inner wall of the groove, and a baffle is slidably connected to the inner wall of the fixing plate, the surface of the baffle being inclined.

[0011] Preferably, a spring is fixedly connected inside the fixing plate, and the end of the spring away from the fixing plate is fixedly connected to the baffle.

[0012] Preferably, a rubber pad is fixedly connected to the lower surface of the baffle, and the rubber pad is in contact with the filter element.

[0013] Preferably, the surface of the first rotating plate is inlaid with balls, and the surface of the balls is in contact with the interior of the cover plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) The ventilator filter device changes the exposed filter element by rotating the rotating rod, which makes it easy to adjust the exposed filter element. At the same time, the unused filter element is covered by the protective shell, which prevents the excess filter element from being exposed to the outside world and prevents dust from covering the filter element interface, thus protecting the filter element.

[0016] (2) The ventilator filter device, through the setting of the spring, allows the baffle to slide out of the inside of the fixed plate and close the gap of the protective shell again, thereby further preventing the unused filter element from contacting the outside world and further protecting it.

[0017] (3) The ventilator filter device, through the setting of the brush, when the filter element slides, the filter element will move and contact the brush on the surface of the fixed block, thereby wiping the surface of the filter element and cleaning the surface of the filter element. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the cover plate of this utility model;

[0021] Figure 3 This is a schematic diagram of the surface structure of the second rotating plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the protective shell of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the fixing plate of this utility model.

[0024] Reference numerals in the attached drawings: 1. Housing; 2. Cover plate; 3. First rotating plate; 4. Protective shell; 5. Fixing plate; 6. Baffle; 7. Fixing block; 8. Filter element; 9. Mounting block; 10. Rotating rod; 11. Second rotating plate; 12. Worm gear; 13. Through groove; 14. Worm wheel; 15. Mounting hole; 16. Groove; 17. Spring. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: a ventilator filtration device, including a housing 1, a cover plate 2 on the top of the housing 1, a protective shell 4 fixedly connected to the surface of the cover plate 2, a groove 16 inside the protective shell 4, a first rotating plate 3 rotatably connected inside the cover plate 2, the surface of the first rotating plate 3 contacting the surface of the protective shell 4, a second rotating plate 11 fixedly connected to the surface of the first rotating plate 3, the second rotating plate 11 rotatably connected to the inside of the cover plate 2, a worm gear 14 fixedly connected to the surface of the second rotating plate 11, a mounting block 9 fixedly connected to the surface of the cover plate 2, a rotating rod 10 rotatably connected inside the mounting block 9, a worm 12 fixedly connected to the surface of the rotating rod 10, the surface of the worm 12 meshing with the surface of the worm gear 14, a through groove 13 on the surface of the cover plate 2, a portion of the worm 12 located in the through groove 13, and mounting holes 15 both inside the first rotating plate 3 and the second rotating plate 11, with a filter element 8 installed inside the mounting holes 15.

[0027] The bottom of the housing 1 is also rotatably connected to the first rotating plate 3, and the lower end of the filter element 8 is installed inside the first rotating plate 3 at the bottom of the housing 1.

[0028] When adjustment of the exposed filter element 8 is required, the rotating rod 10 is rotated, which drives the worm gear 12 to rotate. The worm gear 12 then drives the worm wheel 14 to rotate, which in turn drives the second rotating plate 11 to rotate. The second rotating plate 11 drives the first rotating plate 3 to rotate, and the first rotating plate 3 causes the filter element 8 inside the housing 1 to move accordingly. This allows the filter element 8 to move inside the protective housing 4 as it rotates. The self-locking mechanism between the worm gear 12 and the worm wheel 14 locks the position of the device. By rotating the rotating rod 10, the exposed filter element 8 can be changed, making it easier to adjust. At the same time, the protective housing 4 covers the unused filter element 8, preventing excess filter element 8 from being exposed to the outside environment and preventing dust from covering the interface of the filter element 8, thus protecting the filter element 8.

[0029] A fixing plate 5 is fixedly connected to the inner wall of the groove 16, and a baffle 6 is slidably connected to the inner wall of the fixing plate 5. The surface of the baffle 6 is inclined. A spring 17 is fixedly connected inside the fixing plate 5, and the end of the spring 17 away from the fixing plate 5 is fixedly connected to the baffle 6.

[0030] When the filter element 8 rotates, it moves and presses against the inclined surface of the baffle 6, causing the baffle 6 to slide inward toward the fixed plate 5. At the same time, the sliding of the baffle 6 causes the spring 17 to deform. When the filter element 8 separates from the baffle 6, the elastic force of the spring 17 causes the baffle 6 to slide out of the fixed plate 5 and close the gap in the protective shell 4 again, thus further preventing the unused filter element 8 from contacting the outside world and further protecting it.

[0031] A rubber pad is fixedly connected to the lower surface of the baffle 6. The rubber pad is in contact with the filter element 8. The rubber pad protects the contact area of ​​the filter element 8, thereby reducing the friction between the filter element 8 and the baffle 6 and further protecting the filter element 8.

[0032] The surface of the first rotating plate 3 is inlaid with balls, and the surface of the balls is in contact with the inside of the cover plate 2. Thus, the friction between the first rotating plate 3 and the cover plate 2 is reduced when the first rotating plate 3 rotates, making it easier to rotate the first rotating plate 3.

[0033] Working principle: When adjusting the filter element 8, the operator rotates the rotating rod 10, which drives the worm gear 12, worm wheel 14, second rotating plate 11, and first rotating plate 3 to rotate. The first rotating plate 3 drives the filter element 8 inside the housing 1 to move accordingly, so that the filter element 8 moves inside the protective housing 4 as it rotates. The position of the device is locked by the self-locking of the worm gear 12 and worm wheel 14, thus completing the adjustment of the filter element 8.

[0034] At the same time, when the filter element 8 rotates, it presses against the inclined surface of the baffle 6, so that the baffle 6 slides into the interior of the fixed plate 5 under force, no longer blocking the filter element 8 from sliding. When the filter element 8 separates from the baffle 6, under the elastic force of the spring 17, the baffle 6 slides out of the interior of the fixed plate 5 and closes the gap in the protective shell 4 again.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A ventilator filtration device, comprising a housing (1), characterized in that: A cover plate (2) is provided on the top of the housing (1). A protective shell (4) is fixedly connected to the surface of the cover plate (2). A groove (16) is provided inside the protective shell (4). A first rotating plate (3) is rotatably connected inside the cover plate (2). The surface of the first rotating plate (3) is in contact with the surface of the protective shell (4). A second rotating plate (11) is fixedly connected to the surface of the first rotating plate (3). The second rotating plate (11) is rotatably connected to the inside of the cover plate (2). Both the first rotating plate (3) and the second rotating plate (11) have mounting holes (15) inside. A filter element (8) is installed inside the mounting holes (15).

2. The ventilator filtration device according to claim 1, characterized in that: A worm gear (14) is fixedly connected to the surface of the second rotating plate (11), and a mounting block (9) is fixedly connected to the surface of the cover plate (2). A rotating rod (10) is rotatably connected inside the mounting block (9), and a worm (12) is fixedly connected to the surface of the rotating rod (10). The surface of the worm (12) meshes with the surface of the worm gear (14).

3. A ventilator filtration device according to claim 2, characterized in that: The surface of the cover plate (2) is provided with a through groove (13), and a part of the worm (12) is located in the through groove (13).

4. A ventilator filtration device according to claim 3, characterized in that: The bottom of the housing (1) is also rotatably connected to a first rotating plate (3), and the lower end of the filter element (8) is installed inside the first rotating plate (3) on the bottom of the housing (1).

5. A ventilator filtration device according to claim 4, characterized in that: The inner wall of the groove (16) is fixedly connected to a fixing plate (5), and the inner wall of the fixing plate (5) is slidably connected to a baffle (6), the surface of the baffle (6) being inclined.

6. A ventilator filtration device according to claim 5, characterized in that: A spring (17) is fixedly connected inside the fixing plate (5), and the end of the spring (17) away from the fixing plate (5) is fixedly connected to the baffle (6).

7. A ventilator filtration device according to claim 6, characterized in that: A rubber pad is fixedly connected to the lower surface of the baffle (6), and the rubber pad is in contact with the filter element (8).

8. A ventilator filtration device according to claim 7, characterized in that: The surface of the first rotating plate (3) is inlaid with balls, and the surface of the balls is in contact with the interior of the cover plate (2).

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