Heat and moisture exchange filter

Abstract

The utility model belongs to the technical field of heat and humidity exchange filters, and particularly relates to a heat and humidity exchange filter which comprises a filter body, the filter body comprises an upper shell and a lower shell, a limiting ring and a flow guide block are arranged in inner cavities of the upper shell and the lower shell, an upper connecting pipe and a sampling pipe are arranged at the top of the upper shell, and a lower connecting pipe is arranged at the bottom of the sampling pipe. A thread is arranged at the bottom of the upper shell, a lower connecting pipe is arranged at the bottom of the lower shell, a screw joint groove is formed in the inner wall of the top of the lower shell, a filtering assembly is connected between the upper shell and the lower shell, and a filtering membrane and a water filtering medium in the filter can be conveniently replaced by adopting a screw joint mode between the upper shell and the lower shell; compared with an existing filter which is directly replaced, material waste can be reduced by replacing the filtering membrane and the water filtering medium, and the filtering membrane and the water filtering medium can be assembled through the filtering assembly, so that the filtering membrane and the water filtering medium can be conveniently replaced, and the efficiency of replacing the filtering membrane and the water filtering medium is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat and moisture exchange filters, in particular to a heat and moisture exchange filter. Background Art

[0002] A heat and moisture exchange filter, also known as an artificial nose, is used to heat and humidify the medical gas for mechanical ventilation in order to simulate the function of the nasal cavity. The heat and moisture exchange filter can partially store the heat and moisture in the patient's exhaled gas, and use the above heat and moisture to heat and humidify the newly incoming gas, and use the filter membrane to filter particles, viruses, and bacteria in the air. One end of the filter is connected to the trachea, and the other end is connected to the ventilator.

[0003] During use, the heat and moisture exchange filter in the prior art has the risk of infection due to the filter membrane and water-absorbing medium arranged in the inner cavity. Generally, it needs to be replaced after a period of use. However, the heat and moisture exchange filter in the prior art is integrated. Therefore, when replacing, the heat and moisture exchange filter needs to be replaced as a whole. The overall replacement will cause great waste, so it needs to be improved. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problems existing in the existing heat and moisture exchange filter, the utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a heat and moisture exchange filter, which can facilitate the replacement of the filter membrane and the water filter medium in the filter by screwing the upper shell and the lower shell. Compared with the existing direct replacement filter, the waste of materials can be reduced by replacing the filter membrane and the water filter medium. The filter membrane and the water filter medium can be assembled through the filter assembly, which is convenient for replacement, thereby improving the efficiency of replacing the filter membrane and the water filter medium.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A heat and moisture exchange filter comprises a filter body;

[0009] The filter body includes an upper shell and a lower shell, the inner cavities of the upper shell and the lower shell are provided with limit rings and guide blocks, the top of the upper shell is provided with an upper connecting tube and a sampling tube, the bottom of the upper shell is provided with a thread, the bottom of the lower shell is provided with a lower connecting tube, the top inner wall of the lower shell is provided with a screw groove, and a filter assembly is connected between the upper shell and the lower shell.

[0010] As a preferred solution of a heat and moisture exchange filter described in the utility model, the filter assembly includes a bearing shell, an upper plug-in ring and a lower plug-in ring are respectively provided on the top and bottom of the bearing shell, a bearing rod is provided in the inner cavity of the bearing shell, and a filter membrane and a water filtration medium are provided in the bearing rod.

[0011] As a preferred solution of the heat and moisture exchange filter described in the utility model, the filter membrane is located above the water filtration medium and between the two bearing rods.

[0012] As a preferred solution of the heat and moisture exchange filter described in the utility model, the upper plug-in ring and the lower plug-in ring are plugged into the limiting ring inside the upper shell body and the limiting ring inside the lower shell body respectively.

[0013] As a preferred solution of the heat and moisture exchange filter described in the utility model, the top and bottom of the bearing shell are respectively in contact with the limiting ring inside the upper shell and the limiting ring inside the lower shell.

[0014] As a preferred solution of the heat and moisture exchange filter described in the utility model, the upper shell is screwed to the thread groove arranged on the inner wall of the lower shell through a thread.

[0015] As a preferred solution of the heat and moisture exchange filter described in the utility model, a sealing cover is inserted into the top of the sampling tube.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the filter membrane and the water filter medium in the filter can be easily replaced by screwing the upper shell and the lower shell. Compared with the existing direct replacement of the filter, the waste of materials can be reduced by replacing the filter membrane and the water filter medium. The filter membrane and the water filter medium can be assembled through the filter assembly, which is convenient for replacement, thereby improving the efficiency of replacing the filter membrane and the water filter medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter assembly of the utility model.

[0021] In the figure, 100 is the filter body, 110 is the upper shell, 120 is the lower shell, 130 is the limiting ring, 140 is the guide block, 150 is the upper connecting pipe, 160 is the sampling tube, 170 is the thread, 180 is the lower connecting pipe, 190 is the screw connection groove, 200 is the filter assembly, 210 is the bearing shell, 220 is the upper plug-in ring, 230 is the lower plug-in ring, 240 is the bearing rod, 250 is the filter membrane, and 260 is the water filtering medium. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The utility model provides the following technical solutions: a heat and moisture exchange filter, during use, by screwing the upper shell and the lower shell, the filter membrane and the water filter medium in the filter can be easily replaced, compared with the existing direct replacement filter, by replacing the filter membrane and the water filter medium can reduce the waste of materials, the filter membrane and the water filter medium can be assembled through the filter assembly, so as to facilitate their replacement, thereby improving the efficiency of replacing the filter membrane and the water filter medium;

[0027] Figure 1-Figure 3 It is a schematic diagram of the structure of the first embodiment of a heat and moisture exchange filter of the utility model, please refer to Figure 1-Figure 3 , a heat and moisture exchange filter of this embodiment, the main body of which includes a filter body 100;

[0028] The filter body 100 includes an upper shell 110 and a lower shell 120. The inner cavities of the upper shell 110 and the lower shell 120 are provided with a limit ring 130 and a guide block 140. The top of the upper shell 110 is provided with an upper connecting pipe 150 and a sampling tube 160. The bottom of the upper shell 110 is provided with a thread 170. The bottom of the lower shell 120 is provided with a lower connecting pipe 180. The top inner wall of the lower shell 120 is provided with a screw groove 190. A filter assembly 200 is connected between the upper shell 110 and the lower shell 120. The upper shell 110 is connected to the threaded inner wall of the lower shell 120 by the thread 170. The upper shell 110 and the lower shell 120 are used to carry the limit ring 130 and the guide block 140. The limit ring 130 is used to carry the filter assembly 200 and limit the filter assembly 200. The upper connecting pipe 150 is used to connect the upper shell 110 with external equipment. The sampling tube 160 is used to sample the filter body 100. The thread 170 is used to cooperate with the screw connection groove 190 to realize the screw connection between the upper shell 110 and the lower shell 120. The lower connecting pipe 180 is used to connect the lower shell 120 with external equipment.

[0029] The filter assembly 200 includes a bearing shell 210, and an upper plug-in ring 220 and a lower plug-in ring 230 are respectively arranged on the top and bottom of the bearing shell 210, and a bearing rod 240 is arranged in the inner cavity of the bearing shell 210, and a filter membrane 250 and a water filtering medium 260 are arranged in the bearing rod 240, and the filter membrane 250 is located above the water filtering medium 260 and between the two bearing rods 240. The upper plug-in ring 220 and the lower plug-in ring 230 are respectively plugged with the limiting ring 130 inside the upper shell 110 and the limiting ring 130 inside the lower shell 120, and the top and bottom of the bearing shell 210 are respectively in contact and connected with the limiting ring 130 inside the upper shell 110 and the limiting ring 130 inside the lower shell 120, and the filter assembly 200 is used to store the patient's exhaled gas. The heat and moisture in the air are used to heat and moisten the newly entered air, and the filter membrane 250 is used to filter particles, viruses and bacteria in the air. The bearing shell 210 is used to install the upper plug ring 220 and the lower plug ring 230. The upper plug ring 220 is used to be plugged with the limit ring 130 in the inner cavity of the upper shell 110, and the lower plug ring 230 is used to be plugged with the limit ring 130 in the inner cavity of the lower shell 120. The bearing rod 240 is used to carry the filter membrane 250 and the water filter medium 260. The filter membrane 250 is used to filter particles, viruses and bacteria in the air. The water filter medium 260 is used to store the heat and moisture in the patient's exhaled gas, and use the heat and moisture to heat and moisten the newly entered gas.

[0030] Combination Figure 1-Figure 3 The heat and moisture exchange filter of this embodiment has the following specific working principle. First, gas enters from the upper shell 110, and is filtered, humidified and heated by the filter membrane 250 and the water filter medium 260 arranged on the filter assembly 200, and then discharged from the lower shell 120. The filter membrane 250 and the water filter medium 260 in the filter can be easily replaced by screwing the upper shell 110 and the lower shell 120. Compared with the existing direct replacement filter, the waste of materials can be reduced by replacing the filter membrane 250 and the water filter medium 260. The filter membrane 250 and the water filter medium 260 can be assembled through the filter assembly 200, so as to facilitate their replacement, thereby improving the efficiency of replacing the filter membrane 250 and the water filter medium 260.

[0031] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat and moisture exchange filter, characterized in that: It includes a filter body (100); The filter body (100) comprises an upper shell (110) and a lower shell (120); the inner cavities of the upper shell (110) and the lower shell (120) are provided with limit rings (130) and guide blocks (140); the top of the upper shell (110) is provided with an upper connecting pipe (150) and a sampling tube (160); the bottom of the upper shell (110) is provided with a thread (170); the bottom of the lower shell (120) is provided with a lower connecting pipe (180); the top inner wall of the lower shell (120) is provided with a screw groove (190); and a filter assembly (200) is connected between the upper shell (110) and the lower shell (120).

2. A heat and moisture exchange filter according to claim 1, characterized in that: The filter assembly (200) comprises a bearing shell (210), wherein an upper plug-in ring (220) and a lower plug-in ring (230) are respectively arranged at the top and the bottom of the bearing shell (210), a bearing rod (240) is arranged in the inner cavity of the bearing shell (210), and a filter membrane (250) and a water filtering medium (260) are arranged in the bearing rod (240).

3. A heat and moisture exchange filter according to claim 2, characterized in that: The filter membrane (250) is located above the water filter medium (260) and between the two supporting rods (240).

4. A heat and moisture exchange filter according to claim 2, characterized in that: The upper plug-in ring (220) and the lower plug-in ring (230) are respectively plugged into a limiting ring (130) inside the upper shell (110) and a limiting ring (130) inside the lower shell (120).

5. A heat and moisture exchange filter according to claim 2, characterized in that: The top and bottom of the bearing shell (210) are respectively in contact with a limiting ring (130) inside the upper shell (110) and a limiting ring (130) inside the lower shell (120).

6. A heat and moisture exchange filter according to claim 1, characterized in that: The upper shell (110) is threadedly connected to a thread (170) groove provided on the inner wall of the lower shell (120) via a thread (170).

7. A heat and moisture exchange filter according to claim 1, characterized in that: A sealing cap is inserted into the top of the sampling tube (160).

Images