Heat and moisture exchange filter convenient for sampling

Abstract

The utility model discloses a heat and moisture exchange filter convenient for sampling, which comprises a body, and an upper cover of the body is provided with an upper pipe body and a sampling pipe which are communicated with an upper cavity; the sampling pipe and the upper cavity are provided with a communicated channel, and a sampling channel is formed in the upper surface of the lower part of one side wall of the channel; the upper part of the channel is provided with internal threads and a threaded plug column, and the end part of the threaded plug column is smaller than the end face of the sampling pipe; the lower part of the threaded plug column is in extrusion fit with the lower part of the channel and blocks the sampling channel; the thread stroke of the thread plug column is greater than the stroke of the thread plug column separating from the sampling channel; according to the utility model, the sampling port is very convenient to seal and open, the butt joint of the sampling port is facilitated, and the problem of pollution caused by falling of the sealing cover is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a heat and moisture exchange filter that is convenient for sampling. Background Art

[0002] During the use of the heat and moisture exchange filter, it is necessary to frequently sample the gas. The existing sampling port is generally plugged into a cap, and after the cap is removed, the sampling port is plugged into the interface of the sampling monitoring device; in order to avoid the cap from being lost or contaminating other items after opening, the existing structure generally connects the cap to the outer wall of the filter in an integrated manner.

[0003] However, this type of cap is inconvenient to open, while another threaded type is more convenient to use, that is, an external thread is processed on the sampling port and a threaded cap is installed, as described in Patent 201720826383.7, a heat and moisture exchange filter. In order to avoid the loss of the threaded cap after opening, a hanging handle is provided on the outside of the threaded cap.

[0004] As one of the consumables frequently used in the department, the hanging threaded cap still has the possibility of being lost or dropped. For this reason, we designed a cap structure that is easy to open and does not fall off the sampling port. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a heat and moisture exchange filter that is easy to sample, aiming to solve the problems of inconvenient sampling of the existing heat and moisture exchange filter, inconvenient opening of the sampling port, and easy falling and contamination caused by the use of the cover.

[0006] To achieve the above object, the technical solution of the utility model is: a heat and moisture exchange filter for easy sampling, comprising a body, the upper cover of the body is provided with an upper tube body and a sampling tube connected with an upper cavity; the sampling tube and the upper cavity are provided with a channel connected, and a sampling channel is opened on one side wall of the channel at a lower position toward the upper surface;

[0007] The upper part of the channel is provided with an internal thread and a threaded plug is installed, the end of the threaded plug is smaller than the end face of the sampling tube; the lower part of the threaded plug is squeezed and matched with the lower part of the channel and blocks the sampling channel; and the thread stroke of the threaded plug is greater than the stroke of the threaded plug leaving the sampling channel.

[0008] Preferably, in order to facilitate twisting and rotating the threaded plug, the end of the threaded plug is oval.

[0009] Preferably, in order to replace and block the two channel openings, the lower part of the channel connecting the sampling tube and the upper cavity is an inverted cone, and the sampling channel opening is arranged at the position of the inverted cone; the inverted cone of the lower part of the threaded plug is squeezed and matched with the inverted cone of the channel to block the sampling channel.

[0010] Preferably, the threaded plug is made of medical plastic that is consistent with the body material, has a certain deformation ability, and has better sealing performance.

[0011] The beneficial effects of the utility model are as follows: the sealing and opening of the sampling port are very convenient, the sampling interface is easy to connect, and the problem of the sealing cover falling off and contaminating will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic diagram of the structure of a heat and moisture exchange filter with an existing one-piece cap.

[0013] Figure 2 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] like Figure 1 , 2 As shown, a heat and moisture exchange filter convenient for sampling comprises a main body 1, wherein the upper cover of the main body 1 is provided with an upper tube body 3 and a sampling tube 4 connected with an upper cavity 2; the sampling tube 4 is provided with a channel 5 connected with the upper cavity 2, and a sampling channel 6 is opened on one side wall of the channel 5 at a lower position toward the upper surface; the upper part of the channel 5 is provided with an internal thread, and a threaded plug 7 is installed, and the end of the threaded plug 7 is smaller than the end face of the sampling tube 4; the lower part of the threaded plug 7 is squeezed and matched with the lower part of the channel 5 and blocks the sampling channel 6; and the thread stroke of the threaded plug 7 is greater than the stroke of the threaded plug 7 to escape from the sampling channel 6.

[0015] Preferably, the lower part of the channel 5 connecting the sampling tube 4 and the upper cavity 2 is an inverted cone, and the opening of the sampling channel 6 is arranged at the position of the inverted cone; the inverted cone at the lower part of the threaded plug 7 is squeezed and matched with the inverted cone of the channel 5 and blocks the sampling channel 6; the structural design is more reasonable.

[0016] The cap of the utility model is threaded, and the end of the threaded plug 7 is oval, which is more convenient to twist and rotate the threaded plug 7. The end of the threaded plug 7 is smaller than the end face of the sampling tube 4, and does not affect the use of the tube mouth jacket of the sampling monitoring device. When sealing, the threaded plug 7 is threadedly installed in the channel 5 to block the channel 5 and the sampling channel 6. When sampling is required, the threaded plug 7 is unscrewed so that its bottom leaves the channel 6, and the gas enters the sampling monitoring device through the channel 6. Since the thread stroke of the threaded plug 7 is greater than the stroke of the threaded plug 7 leaving the sampling channel 6, the number of thread turns is designed to be large. When the threaded plug leaves the channel 6, the threaded plug 7 is still in threaded cooperation, so it will not leave the channel 5, and there is no need to worry about the risk of falling and contamination.

[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat and moisture exchange filter for convenient sampling, comprising a body (1), wherein the upper cover of the body (1) is provided with an upper tube body (3) and a sampling tube (4) communicating with an upper cavity (2); characterized in that: The sampling tube (4) and the upper cavity (2) are provided with a communicating channel (5), and a sampling channel (6) is opened on one side wall of the channel (5) from the lower position toward the upper surface; The upper part of the channel (5) is provided with an internal thread and is provided with a threaded plug (7), the end of the threaded plug (7) being smaller than the end face of the sampling tube (4); the lower part of the threaded plug (7) is squeezed and matched with the lower part of the channel (5) and blocks the sampling channel (6); and the thread stroke of the threaded plug (7) is greater than the stroke of the threaded plug (7) leaving the sampling channel (6).

2. A heat and moisture exchange filter for facilitating sampling according to claim 1, characterized in that: The end of the threaded plug (7) is in an oblate shape.

3. A heat and moisture exchange filter for facilitating sampling according to claim 1, characterized in that: The lower part of the channel (5) connecting the sampling tube (4) and the upper cavity (2) is an inverted cone, and the opening of the sampling channel (6) is arranged at the position of the inverted cone; the inverted cone at the lower part of the threaded plug (7) is pressed and matched with the inverted cone of the channel (5) to block the sampling channel (6).

4. A heat and moisture exchange filter for facilitating sampling according to claim 1, characterized in that: The threaded plug (7) is made of medical plastic that is consistent with the material of the body (1).

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