Gas filtering device of breathing machine

Abstract

The utility model discloses a breathing machine gas filtering device which comprises a shell body, a filter element, a filter element and a filter element, and the shell body comprises an upper cover and a lower cover; the filtering assembly and the clamping assembly are both arranged in the shell; the clamping assembly is arranged in the circumferential direction of the filtering assembly; the dismounting and mounting assembly is arranged at the top end of the upper cover; the locking assembly is arranged at the joint of the upper cover and the lower cover and comprises a first supporting plate, a second supporting plate, a limiting rod and fixing nuts, the first supporting plate and the second supporting plate are correspondingly arranged on the peripheral wall of the upper cover and the peripheral wall of the lower cover respectively, the limiting rod penetrates through the first supporting plate and the second supporting plate, and the fixing nuts are arranged at the two ends of the limiting rod respectively. When the filter assembly needs to be replaced, the fixing nuts are taken out from the two ends of the limiting rod, then the limiting rod is detached from the first supporting plate and the second supporting plate, locking of the upper cover and the lower cover can be relieved, then the filter assembly is replaced, the structure is simple, operation is easy, the filter assembly is replaced more conveniently, and the requirements of users are met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and more specifically, to a gas filtering device for a ventilator. Background Art

[0002] A ventilator gas filter is a device used to filter harmful substances and microorganisms in the output gas of the ventilator, aiming to ensure that patients breathe clean and safe air during treatment. This device is usually installed in the air circuit of the ventilator, which can effectively remove particulate matter, gas and microorganisms in the air, reduce the number of particles in the respiratory system, and thus prevent patients from infection or other potential risks.

[0003] The ventilator gas filter device usually consists of a filter layer, a support layer and a sealing layer. The filter layer is the key part, made of high-efficiency filter material, which can prevent the entry of particles. The support layer is used to support the filter layer and maintain its structural stability. The sealing layer ensures that the filter is tightly connected to the ventilator to prevent air leakage.

[0004] However, after being used for a period of time, the filtering effect of the filter device will gradually decrease and need to be replaced regularly. Some existing filter devices require disassembly of the entire device when replacing the filter element, which increases the complexity and time cost of replacement. For patients who need to frequently replace the filter element, this inconvenience may affect their user experience.

[0005] Therefore, how to provide a ventilator gas filtering device has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] One purpose of the utility model is to provide a new technical solution for a gas filter device for a breathing machine.

[0007] According to a first aspect of the utility model, a ventilator gas filter device is provided, comprising: a housing, the housing comprising an upper cover and a lower cover;

[0008] A filter assembly, wherein the filter assembly is disposed in the housing;

[0009] A clamping assembly, which is arranged inside the housing and used to clamp the filter assembly, and the clamping assembly is arranged along the circumference of the filter assembly;

[0010] A disassembly assembly, which is arranged at the top of the upper mask and is used to connect the upper mask to the breathing duct;

[0011] A locking assembly, which is arranged at the connection between the upper cover and the lower cover and is used to lock the upper cover and the lower cover, and the locking assembly includes a first support plate, a second support plate, a limit rod and a fixing nut, the first support plate and the second support plate are respectively arranged on the outer peripheral wall of the upper cover and the outer peripheral wall of the lower cover, the limit rod passes through the first support plate and the second support plate, and the fixing nuts are respectively arranged at both ends of the limit rod.

[0012] Optionally, the filter assembly includes an annular wrapping layer, a dust filter membrane, a catalyst and a desiccant, and the dust filter membrane, the catalyst and the desiccant are sequentially arranged in the annular wrapping layer, the dust filter membrane is used to filter dust, and the catalyst is used to filter toxic gases.

[0013] Optionally, the upper cover is provided with an annular groove, and the lower cover is provided with an annular convex body, and the annular convex body is inserted into the annular groove so that the upper cover and the lower cover are fitted.

[0014] Optionally, the top of the upper cover has an air inlet; the disassembly and assembly assembly includes a connecting pipe and a branch pipe, the first end of the branch pipe is connected to the air inlet, the connecting pipe is sleeved on the branch pipe, and the outer peripheral wall of the branch pipe has an external thread for connecting to the breathing duct.

[0015] Optionally, an air outlet is provided at the bottom end of the lower cover; the dust filter membrane is provided corresponding to the air inlet, and the desiccant is provided corresponding to the air outlet.

[0016] Optionally, there are multiple locking assemblies, which are respectively arranged along the circumference of the interior of the shell.

[0017] Optionally, the clamping assembly is respectively arranged on the inner wall of the upper cover and the inner circumferential wall of the lower cover; the clamping assembly includes a clamping plate and an elastic member, the first end of the elastic member is connected to the inner wall of the shell, the second end of the elastic member is connected to the clamping plate, and the clamping plate abuts against the annular wrapping layer.

[0018] The beneficial effects of the utility model are:

[0019] The utility model arranges the clamping assembly inside the housing, and arranges the clamping assembly along the circumference of the filter assembly, so that the clamping assembly clamps the filter assembly arranged in the housing, and arranges the disassembly assembly at the top of the upper cover, so that the upper cover is connected to the breathing duct, the first support plate and the second support plate are respectively arranged on the outer peripheral wall of the upper cover and the outer peripheral wall of the lower cover, the limit rod penetrates the first support plate and the second support plate, and the fixing nuts are respectively arranged at both ends of the limit rod. When the filter assembly needs to be replaced, the fixing nuts are first taken out from both ends of the limit rod, and then the limit rod is disassembled from the first support plate and the second support plate, so that the locking of the upper cover and the lower cover can be released, and then the upper cover or the lower cover can be opened, and then the filter assembly can be replaced. The structure is simple and easy to operate, which makes the replacement of the filter assembly more convenient, reduces the time of installation and disassembly, and meets the needs of users.

[0020] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0022] Figure 1 This is a structural diagram of the gas filter device for a ventilator of the utility model;

[0023] Figure 2 This is a diagram of the internal structure of the gas filter device for the ventilator of the utility model;

[0024] Figure 3 It is a cross-sectional view of the gas filter device for a breathing machine of the utility model;

[0025] Figure 4 This is a structural diagram of the filter assembly of the utility model;

[0026] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0027] The markings in the figure are as follows: 1. Upper cover; 11. Lower cover; 110. Annular convex body; 111. Groove; 112. Air inlet; 113. Air outlet; 12. Disassembly and assembly assembly; 120. Connecting pipe; 121. Branch pipe; 122. External thread; 13. Locking assembly; 130. First support plate; 131. Limit rod; 132. Second support plate; 133. Fixing nut; 14. Filter assembly; 140. Annular wrapping layer; 141. Dust filter membrane; 142. Catalyst; 143. Desiccant; 15. Clamping assembly; 150. Clamping plate; 151. Elastic member. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0032] like Figures 1 to 5 As shown, an embodiment of the utility model provides a gas filter device for a ventilator, comprising: a housing, a filter assembly 14 , a clamping assembly 15 , a disassembly assembly 12 and a locking assembly 13 .

[0033] The housing includes an upper cover 1 and a lower cover 11, which are buckled with each other and locked with a locking assembly 13. It should be noted that the buckling method of the upper cover 1 and the lower cover 11 can be a snap connection, a threaded connection or other connection methods, which are not limited here.

[0034] The filter assembly 14 is disposed in the housing and is used to filter the air introduced into the housing to improve the air quality.

[0035] The clamping assembly 15 is disposed inside the housing and is used to clamp the filter assembly 14 so that the filter assembly 14 is fixed inside the housing. The clamping assembly 15 is disposed along the circumference of the filter assembly 14 .

[0036] The disassembly assembly 12 is arranged at the top of the upper mask 1, and is used to connect the upper mask 1 with the breathing duct. The disassembly assembly 12 facilitates the installation and disassembly of the shell.

[0037] The locking assembly 13 is arranged at the connection between the upper cover 1 and the lower cover 11, and is used to lock the upper cover 1 and the lower cover 11. The locking assembly 13 includes a first support plate 130, a second support plate 132, a limiting rod 131 and a fixing nut 133. The first support plate 130 and the second support plate 132 are respectively arranged on the outer peripheral wall of the upper cover 1 and the outer peripheral wall of the lower cover 11. The limiting rod 131 passes through the first support plate 130 and the second support plate 132, and the fixing nuts 133 are respectively arranged at both ends of the limiting rod 131.

[0038] When the filter assembly 14 needs to be replaced, the operator first removes the fixing nuts 133 from the two ends of the limiting rod 131, and then removes the limiting rod 131 from the first support plate 130 and the second support plate 132 to release the lock on the upper cover 1 and the lower cover 11, and then opens the upper cover 1 or the lower cover 11 to replace the filter assembly 14.

[0039] When the filter assembly 14 is replaced, the operator first buckles the upper cover 1 and the lower cover 11, and makes the first support plate 130 on the upper cover 1 correspond to the second support plate 132 on the lower cover 11, so that the limiting rod 131 passes through the first support plate 130 and the second support plate 132, and screws the fixing nuts 133 into the two ends of the limiting rod 131, thereby locking the first support plate 130 and the second support plate 132.

[0040] The utility model arranges the clamping assembly 15 inside the shell, and arranges the clamping assembly 15 along the circumference of the filter assembly 14, so that the clamping assembly 15 clamps the filter assembly 14 arranged in the shell, and arranges the disassembly assembly 12 at the top of the upper cover 1, so that the upper cover 1 is connected to the breathing duct, the first support plate 130 and the second support plate 132 are respectively arranged on the outer peripheral wall of the upper cover 1 and the outer peripheral wall of the lower cover 11, the limiting rod 131 passes through the first support plate 130 and the second support plate 132, and the fixing nuts 133 are respectively arranged at both ends of the limiting rod 131. When the filter assembly 14 needs to be replaced, first remove the fixing nuts 133 from the two ends of the limiting rod 131, then remove the limiting rod 131 from the first support plate 130 and the second support plate 132, so as to release the lock of the upper cover 1 and the lower cover 11, and then open the upper cover 1 or the lower cover 11 to replace the filter assembly 14. The structure is simple and easy to operate, which makes the replacement of the filter assembly 14 more convenient, reduces the time of installation and disassembly, and meets the needs of users.

[0041] In one embodiment of the ventilator gas filter device of the utility model, as Figure 2 and Figure 4 As shown, the filter assembly 14 includes an annular wrapping layer 140, a dust filter membrane 141, a catalyst 142 and a desiccant 143. The dust filter membrane 141, the catalyst 142 and the desiccant 143 are sequentially arranged in the annular wrapping layer 140. The dust filter membrane 141 is used to filter dust, and the catalyst 142 is used to filter toxic gases.

[0042] Specifically, the dust filter membrane 141, the catalyst 142 and the desiccant 143 are combined to form a cylinder, the thickness of the catalyst 142 is greater than the thickness of the desiccant 143, and the thickness of the desiccant 143 is greater than the thickness of the dust filter membrane 141, which effectively ensures the filtering effect. The catalyst 142 filters toxic gases such as CO, HCN, HCHO, and HCL, the dust filter membrane 141 is used to filter smoke, dust, etc., and the desiccant 143 is used to provide protection for the catalyst 142.

[0043] The utility model arranges the catalyst 142 and the desiccant 143, the dust filter membrane 141, the catalyst 142 and the desiccant 143 in the annular wrapping layer 140 in sequence, filters the dust in the air through the dust filter membrane 141, filters the toxic gas in the air through the catalyst 142, dries the air through the desiccant 143 and provides protection for the catalyst 142, so that the gas passes through the dust filter membrane 141 and is output from the desiccant 143 through the catalyst 142, and the harmful gas contained in the air is filtered out, thereby effectively improving the stability of the air quality.

[0044] In one embodiment of the ventilator gas filter device of the utility model, as Figures 2 to 5 As shown, the upper cover 1 is provided with an annular groove 111 , and the lower cover 11 is provided with an annular convex body 110 , and the annular convex body 110 is inserted into the annular groove 111 so that the upper cover 1 and the lower cover 11 fit together.

[0045] The utility model provides an annular groove 111 on the upper cover 1 and an annular protrusion 110 on the lower cover 11, so that the annular protrusion 110 is inserted into the annular groove 111, and then the upper cover 1 is fitted with the lower cover 11, thereby increasing the stability of the connection between the upper cover 1 and the lower cover 11 and making the process of replacing the filter assembly 14 more convenient.

[0046] In one embodiment of the ventilator gas filter device of the utility model, as Figure 3 As shown, the top of the upper cover 1 has an air inlet 112; the disassembly assembly 12 includes a connecting pipe 120 and a branch pipe 121, the first end of the branch pipe 121 is connected to the air inlet 112, the connecting pipe 120 is sleeved on the branch pipe 121, and the outer peripheral wall of the branch pipe 121 has an external thread 122 for connecting to the breathing duct.

[0047] The utility model connects the first end of the branch pipe 121 with the air inlet 112, and the connecting pipe 120 is sleeved on the branch pipe 121. The outer peripheral wall of the branch pipe 121 has an external thread 122, so that the branch pipe 121 can be rotated and tightened inside the breathing pipe, and then the shell is connected to the breathing pipe through the branch pipe 121, which facilitates the installation and disassembly of the shell on the breathing pipe.

[0048] In one embodiment of the ventilator gas filter device of the utility model, as Figure 3As shown, an air outlet 113 is provided at the bottom end of the lower cover 11 ; the dust filter membrane 141 is provided corresponding to the air inlet 112 , and the desiccant 143 is provided corresponding to the air outlet 113 .

[0049] Specifically, the disassembly assembly 12 is also arranged at the air outlet 113 . The specific arrangement refers to the above-mentioned disassembly assembly 12 being arranged at the air inlet 112 , and is not limited here.

[0050] The utility model sets an air outlet 113 at the bottom end of the lower cover 11, a dust filter membrane 141 and an air inlet 112 are set correspondingly, and a desiccant 143 and an air outlet 113 are set correspondingly, so that the air introduced into the shell passes through the dust filter membrane 141, the catalyst 142 and the desiccant 143 in sequence, thereby protecting the catalyst 142 and effectively improving the service life of the filter component 14.

[0051] In one embodiment of the respirator gas filter device of the utility model, there are multiple locking assemblies 13, and the multiple locking assemblies 13 are respectively arranged along the circumference of the inside of the shell. This arrangement further increases the stability of the locking assembly 13 fixing the upper cover 1 and the lower cover 11.

[0052] In one embodiment of the ventilator gas filter device of the utility model, as Figures 1 to 5 As shown, the clamping assembly 15 is respectively arranged on the inner wall of the upper cover 1 and the inner circumferential wall of the lower cover 11; the clamping assembly 15 includes a clamping plate 150 and an elastic member 151, the first end of the elastic member 151 is connected to the inner wall of the shell, the second end of the elastic member 151 is connected to the clamping plate 150, and the clamping plate 150 is abutted against the annular wrapping layer 140.

[0053] In this embodiment, the elastic member 151 may be a spring, an elastic sponge or other elastic structures, which are not limited here.

[0054] The utility model arranges the clamping assembly 15 on the inner wall of the upper cover 1 and the inner circumferential wall of the lower cover 11 respectively, connects the first end of the elastic member 151 to the inner wall of the shell, connects the second end of the elastic member 151 to the clamping plate 150, and the clamping plate 150 abuts against the annular wrapping layer 140, so that the multiple clamping plates 150 act together on the annular wrapping layer 140, thereby fixing the filter assembly 14 in the upper cover 1 and the lower cover 11, and driving the multiple clamping plates 150 to clamp and fix the filter assembly 14 through the rebound of the elastic member 151, thereby improving the stability of the filter assembly 14 between the upper cover 1 and the lower cover 11.

[0055] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A breathing machine gas filter device, characterized in that: include: A housing, the housing comprising an upper cover and a lower cover; A filter assembly, wherein the filter assembly is disposed in the housing; A clamping assembly, which is arranged inside the housing and used to clamp the filter assembly, and the clamping assembly is arranged along the circumference of the filter assembly; A disassembly assembly, which is arranged at the top of the upper mask and is used to connect the upper mask to the breathing duct; A locking assembly, which is arranged at the connection between the upper cover and the lower cover and is used to lock the upper cover and the lower cover, and the locking assembly includes a first support plate, a second support plate, a limit rod and a fixing nut, the first support plate and the second support plate are respectively arranged on the outer peripheral wall of the upper cover and the outer peripheral wall of the lower cover, the limit rod passes through the first support plate and the second support plate, and the fixing nuts are respectively arranged at both ends of the limit rod.

2. The ventilator gas filter device according to claim 1, characterized in that: The filter assembly includes an annular wrapping layer, a dust filter membrane, a catalyst and a desiccant. The dust filter membrane, the catalyst and the desiccant are sequentially arranged in the annular wrapping layer. The dust filter membrane is used for filtering dust, and the catalyst is used for filtering toxic gases.

3. The ventilator gas filter device according to claim 2, characterized in that: The upper cover is provided with an annular groove, and the lower cover is provided with an annular convex body, and the annular convex body is inserted into the annular groove so that the upper cover is fitted with the lower cover.

4. The ventilator gas filter device according to claim 3, characterized in that: The top of the upper cover is provided with an air inlet; the disassembly and assembly assembly comprises a connecting pipe and a branch pipe, the first end of the branch pipe is connected to the air inlet, the connecting pipe is sleeved on the branch pipe, and the outer peripheral wall of the branch pipe is provided with an external thread for connecting with the breathing duct.

5. The ventilator gas filter device according to claim 4, characterized in that: An air outlet is arranged at the bottom end of the lower cover; the dust filter membrane is arranged corresponding to the air inlet, and the desiccant is arranged corresponding to the air outlet.

6. The ventilator gas filter device according to claim 1, characterized in that: The locking components are multiple and are respectively arranged along the circumference of the interior of the shell.

7. The ventilator gas filter device according to claim 2, characterized in that: The clamping assembly is respectively arranged on the inner wall of the upper cover and the inner circumferential wall of the lower cover; the clamping assembly includes a clamping plate and an elastic member, the first end of the elastic member is connected to the inner wall of the shell, the second end of the elastic member is connected to the clamping plate, and the clamping plate abuts against the annular wrapping layer.

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