Filter device for breathing machine

Abstract

The utility model discloses a filter device for a respirator, belonging to the technical field of respirators, comprising a main body, a rotating part, a resistance part and a resistance ring, the main body being composed of two detachably connected shells, and the ends of the two shells far away from each other are respectively connected to an air inlet pipe and an air outlet pipe, the rotating part is installed between the two shells, and a plurality of mounting holes equidistantly arranged around a central axis of the rotating part are opened on the rotating part, a filter element is detachably installed inside the mounting hole, the resistance part is installed at one end of the air inlet pipe and the air outlet pipe close to the rotating part, and is used to drive the air inlet pipe and the air outlet pipe to be opposite to the mounting hole; the utility model can drive the air inlet pipe and the air outlet pipe to be separated from the resistance with the rotating part by rotating the rotating part, thereby rotating the filter element to be replaced into the inner groove, so that the filter element is moved out to the outside of the main body, and the filter element can be replaced without disassembling the main body, which is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of respirators, in particular to a filtering device for a respirator. Background Art

[0002] The main function of a ventilator is to assist breathing, maintain breathing, regulate breathing, etc. It can restore effective ventilation and improve oxygenation for patients. In a ventilator, a filter device is needed to filter particles and bacteria in the air. Particles and bacteria may come from air, water or other sources, including the patient himself or the surrounding environment. By using a filter device, microorganisms, viruses, bacteria and other harmful substances in the air are filtered to prevent them from entering the patient's respiratory tract, reducing the burden on the respiratory system and reducing the risk of respiratory tract infection in patients.

[0003] During the use of the ventilator, dust, bacteria and other pollutants will gradually accumulate, and the filtering performance will tend to be saturated. At this time, the filter element inside the ventilator needs to be replaced. If it is not replaced in time, it will affect the filtering effect and the safety of the ventilator. At present, when replacing the filter element in the ventilator, it is generally necessary to first disassemble the structure that wraps the filter element before replacing the filter element. This is not only time-consuming and laborious, but also complicated to operate, and even requires certain professional skills. It is impossible to quickly replace the filter element. In view of this, we propose a filter device for a ventilator to solve the above problems. Utility Model Content

[0004] The embodiment of the utility model provides a filtering device for a breathing machine to solve the above-mentioned technical problems.

[0005] The embodiment of the utility model adopts the following technical solution: comprising a main body, a rotating part, a resisting part and a resisting ring;

[0006] The main body is composed of two detachably connected shells, and the ends of the two shells away from each other are respectively connected to the air inlet pipe and the air outlet pipe, the rotating member is installed between the two shells, and the rotating member is provided with a plurality of mounting holes equidistantly arranged around the central axis of the rotating member, and a filter is detachably installed inside the mounting hole, the resistance member is installed at one end of the air inlet pipe and the air outlet pipe close to the rotating member, and is used to drive the air inlet pipe and the air outlet pipe to face the mounting hole, the resistance member is connected to a resistance rod, and the resistance ring is installed on both sides of the rotating member, A protrusion and a recessed portion are provided on the interference ring. When the interference rod interferes with the protrusion, the interference member drives the air inlet pipe and the air outlet pipe to be separated from the connection with the mounting hole. When the interference rod interferes with the recessed portion, the interference member drives the air inlet pipe and the air outlet pipe to be sealed at both ends of the corresponding mounting hole. By rotating the rotating member, the air inlet pipe and the air outlet pipe can be separated from the interference with the rotating member, so that the filter element to be replaced can be rotated into the inner groove, and the filter element can be moved out to the outside of the main body. The filter element can be replaced without disassembling the main body, which is more convenient to use.

[0007] Furthermore, the resistance member includes a fixed plate, an elastic member and a sliding plate, the fixed plate is fixedly connected to the inner wall of the shell, the sliding plate is fixedly connected to one end of the air inlet pipe and the air outlet pipe, the two ends of the elastic member are respectively connected to the fixed plate and the sliding plate, and one end of the resistance rod is fixedly connected to the sliding plate. When the resistance rod is in conflict with the recessed portion, the sliding plate is driven to move by the elastic force of the elastic member, so that the air inlet pipe and the air outlet pipe can be blocked at both ends of the mounting hole.

[0008] Furthermore, a guide rail is provided on the inner wall of the shell, and the sliding plate is slidably connected to the shell via the guide rail to guide the sliding plate, so that the sliding plate drives the air inlet pipe and the air outlet pipe to move linearly, making it easier to align with the installation hole.

[0009] Furthermore, a sealing member is provided at one end of the air inlet pipe and the air outlet pipe close to the rotating member, and sealing grooves matching with the sealing member are provided on both sides of the rotating member, so that the connection sealing between the air inlet pipe and the air outlet pipe and the mounting hole is better.

[0010] Furthermore, a positioning rod is provided inside the shell, and a positioning hole matching with the positioning rod is opened in the center of the rotating member. When the two shells are connected, the two positioning rods are inserted into the positioning holes, thereby connecting the rotating member between the two shells.

[0011] Furthermore, the filter element includes a first filter layer and a second filter layer, and the first filter layer and the second filter layer are connected by a connecting rod, so that double-layer filtering can be performed to improve the filtering effect.

[0012] Furthermore, an inner groove is provided on the main body, so that the filter element to be replaced can be rotated to the outside of the main body for replacement.

[0013] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0014] When the rotating part drives the interference ring to rotate synchronously, the protrusion on the interference ring comes into conflict with the interference rod, so that the interference rod drives the sliding plate to compress the elastic part and shrink, so that one end of the air inlet pipe and the air outlet pipe is separated from the interference with the rotating part. Then, when the interference ring rotates to make the recessed part contact with the interference rod, the air inlet pipe and the air outlet pipe are blocked on both sides of the mounting hole under the action of the elastic part, so that a passage is formed between the air inlet pipe and the air outlet pipe, and the air inlet pipe and the air outlet pipe are separated from the interference with the rotating part by rotating the rotating part, so that the filter element to be replaced is rotated into the inner groove, so that the filter element is moved out to the outside of the main body, and the filter element can be replaced without disassembling the main body, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 The cross-sectional structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the internal structure of one of the shells of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure when the interference rod and the interference member of the utility model are in conflict;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the resistance member of the utility model;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the filter element of the utility model;

[0022] Figure 7 The cross-sectional structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 8 It is a structural schematic diagram of the sealing member of the utility model when it is separated from the sealing groove.

[0024] Reference numerals

[0025] Main body 1, shell 11, air inlet pipe 12, air outlet pipe 13, rotating part 2, mounting hole 21, filter element 3, first filter layer 31, second filter layer 32, connecting rod 33, resistance member 4, resistance rod 41, fixing plate 42, elastic member 43, sliding plate 44, resistance ring 5, protrusion 51, recessed portion 52, guide rail 6, sealing member 7, sealing groove 71, positioning rod 8, positioning hole 81, inner groove 9. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] The utility model embodiment provides a filtering device for a respirator, comprising a main body 1, a rotating member 2, a resistance member 4 and a resistance ring 5. The main body 1 is composed of two shells 11 that can be detachably connected, such as by snap-fitting or screwing, and the ends of the two shells 11 that are away from each other are respectively connected with an air inlet pipe 12 and an air outlet pipe 13. The air inlet pipe 12 and the air outlet pipe 13 are preferably soft tubes. When in use, the main body 1 is installed on the pipeline of the respirator, and the air is filtered by the filtering device before being transported to the pipeline of the respirator and finally provided to the patient for use. This ensures that the gas inhaled by the patient is filtered and reduces the pollution to the patient's respiratory tract. The rotating member 2 is installed between the two shells 11, and a plurality of mounting holes 21 equidistantly arranged around the central axis of the rotating member 2 are opened on the rotating member 2. The filter member 3 is detachably installed inside the mounting hole 21. When the rotating member 2 rotates and drives one of the mounting holes 21 to be opposite to the output end of the air inlet pipe 12 and the input end of the air outlet pipe 13, a filter 3 is formed. The passage can make the gas be filtered and purified through the filter element 3 in the mounting hole 21 and then discharged into the ventilator pipeline. The sense of frustration generated when the rotating member 2 drives the friction ring 5 to rotate can be used to judge whether the mounting hole 21 is opposite to the inlet pipe 12 and the outlet pipe 13. Among them, the length of the protrusion 51 is the distance between two adjacent mounting holes 21. For example, when the friction rod 41 moves from the head end of the protrusion 51 to the tail end of the protrusion 51, one mounting hole 21 is just moved to a position aligned with the inlet pipe 12 and the outlet pipe 13. The filter element 3 includes a first filter layer 31 and a second filter layer 32. The first filter layer 31 and the second filter layer 32 are connected by a connecting rod 33. The first filter layer 31 can be made of fiber material with small pores to capture particulate matter in the air. The second filter layer 32 can be a bacterial filter layer to capture microorganisms and bacteria in the air. The first filter layer 31 and the second filter layer 32 cooperate to achieve double filtration of pollutants in the gas, thereby improving the filtering and purification effect.

[0029] The resistance member 4 is installed at one end of the inlet pipe 12 and the outlet pipe 13 close to the rotating member 2, that is, the output end of the inlet pipe 12 and the input end of the outlet pipe 13, and is used to drive the inlet pipe 12 and the outlet pipe 13 to face the mounting hole 21. The resistance member 4 is connected with a resistance rod 41, and the resistance ring 5 is installed on both sides of the rotating member 2. The resistance ring 5 is provided with a protrusion 51 and a recessed portion 52. When the rotating member 2 drives the resistance ring 5 to rotate so that the resistance rod 41 conflicts with the protrusion 51, the resistance member 4 is squeezed by the protrusion 51 and squeezed backward. The resistance member 4 is pressed so that the resistance member 4 drives the air inlet pipe 12 and the air outlet pipe 13 to separate from the connection with the mounting hole 21. When the rotating member 2 drives the resistance ring 5 to rotate so that the resistance rod 41 contacts the recessed portion 52, the resistance rod 41 separates from the contact with the raised portion 51, and drives the air inlet pipe 12 and the air outlet pipe 13 to be sealed at the two ends of the corresponding mounting hole 21 under the elastic force of the resistance member 4, so that when the rotating member 2 is rotated, the air inlet pipe 12 and the air outlet pipe 13 are separated from the blockage of the mounting hole 21, which facilitates the rotation of the rotating member 2.

[0030] Preferably, a positioning rod 8 is provided inside the shell 11, and a positioning hole 81 matching the positioning rod 8 is opened at the center of the rotating member 2. When the two shells 11 are installed together in a relative state, the positioning rods 8 on the two shells 11 are inserted into the positioning hole 81, so that the rotating member 2 can be rotated with the support of the positioning rod 8, so as to facilitate the rotation of the filter element 3 that needs to be replaced to be misaligned with the inlet pipe 12 and the outlet pipe 13.

[0031] Preferably, an inner groove 9 is provided on the main body 1 , and the rotating member 2 drives the filter element 3 to be replaced to enter the inner groove 9 , so that the filter element 3 is moved out from the inside of the main body 1 , thereby facilitating the replacement operation of the filter element 3 .

[0032] Preferably, the resistance member 4 includes a fixed plate 42, an elastic member 43 and a sliding plate 44, the fixed plate 42 is fixedly connected to the inner wall of the shell 11, the sliding plate 44 is fixedly connected to one end of the inlet pipe 12 and the outlet pipe 13, the two ends of the elastic member 43 are respectively connected to the fixed plate 42 and the sliding plate 44, one end of the resistance rod 41 is fixedly connected to the sliding plate 44, when the resistance rod 41 is squeezed by the protrusion 51, the resistance rod 41 drives the sliding plate 44 to compress the elastic member 43, wherein the elastic member 43 can be a device with a certain elastic force such as a spring, and the fixed plate 42 is used to support the elastic member 43 to prevent the elastic member 43 from being displaced when it is compressed.

[0033] Preferably, a guide rail 6 is provided on the inner wall of the shell 11, and the sliding plate 44 is slidably connected to the shell 11 through the guide rail 6 to guide the sliding plate 44, so that the sliding plate 44 can drive the air inlet pipe 12 and the air outlet pipe 13 to move linearly, making it easier to align with the mounting hole 21.

[0034] Preferably, a sealing member 7 is provided at one end of the air inlet pipe 12 and the air outlet pipe 13 close to the rotating member 2, and sealing grooves 71 matching with the sealing member 7 are provided on both sides of the rotating member 2. When the output end of the air inlet pipe 12 and the input end of the air outlet pipe 13 are aligned with the mounting hole 21, the sealing member 7 enters the sealing groove 71, and under the action of the elastic member 43, the sealing member 7 is tightly pressed against the inside of the sealing groove 71, thereby achieving better sealing at the connection between the air inlet pipe 12 and the air outlet pipe 13 and the mounting hole 21 to avoid air leakage, wherein the sealing member 7 can be a device such as an O-ring.

[0035] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A filter device for a breathing machine, characterized in that: include; A main body (1), the main body (1) being composed of two detachably connected shells (11), and ends of the two shells (11) that are away from each other are respectively connected to an air inlet pipe (12) and an air outlet pipe (13); A rotating member (2), the rotating member (2) being installed between the two housings (11), and the rotating member (2) being provided with a plurality of mounting holes (21) equidistantly arranged around the central axis of the rotating member (2), and a filter member (3) being detachably installed inside the mounting hole (21); A resistance member (4), the resistance member (4) being mounted on one end of the air inlet pipe (12) and the air outlet pipe (13) close to the rotating member (2), and being used for driving the air inlet pipe (12) and the air outlet pipe (13) to face the mounting hole (21), and the resistance member (4) being connected to a resistance rod (41); A resistance ring (5) is installed on both sides of the rotating member (2). A protrusion (51) and a recess (52) are provided on the resistance ring (5). When the resistance rod (41) is in contact with the protrusion (51), the resistance member (4) drives the air inlet pipe (12) and the air outlet pipe (13) to be separated from the connection with the mounting hole (21). When the resistance rod (41) is in contact with the recess (52), the resistance member (4) drives the air inlet pipe (12) and the air outlet pipe (13) to be blocked at both ends of the corresponding mounting hole (21).

2. A filter device for a breathing machine according to claim 1, characterized in that: The resisting member (4) comprises a fixed plate (42), an elastic member (43) and a sliding plate (44); the fixed plate (42) is fixedly connected to the inner wall of the housing (11); the sliding plate (44) is fixedly connected to one end of the air inlet pipe (12) and the air outlet pipe (13); two ends of the elastic member (43) are respectively connected to the fixed plate (42) and the sliding plate (44); and one end of the resisting rod (41) is fixedly connected to the sliding plate (44).

3. A filter device for a breathing machine according to claim 2, characterized in that: A guide rail (6) is provided on the inner wall of the housing (11), and the sliding plate (44) is slidably connected to the housing (11) via the guide rail (6).

4. A filter device for a breathing machine according to claim 1, characterized in that: A sealing member (7) is provided at one end of the air inlet pipe (12) and the air outlet pipe (13) close to the rotating member (2), and sealing grooves (71) matching with the sealing member (7) are provided on both sides of the rotating member (2).

5. A filter device for a breathing machine according to claim 1, characterized in that: A positioning rod (8) is provided inside the housing (11), and a positioning hole (81) matching with the positioning rod (8) is provided at the center of the rotating member (2).

6. A filter device for a breathing machine according to claim 1, characterized in that: The filter element (3) comprises a first filter layer (31) and a second filter layer (32), and the first filter layer (31) and the second filter layer (32) are connected via a connecting rod (33).

7. A filter device for a breathing machine according to claim 1, characterized in that: The main body (1) is provided with an inner groove (9).

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