Fresh air filter pipeline convenient to replace and filter assembly

Abstract

The utility model discloses a fresh air filter pipeline convenient to replace and a filter assembly, which comprise a pipe body and are characterized in that an internal thread is arranged on the inner wall of a port of the pipe body; a step part is further arranged in the pipe body, is connected with the internal thread and protrudes out of the surface of the internal thread; a sealing gasket is arranged on one side, facing the internal thread, of the step part; and a valve for opening and closing the pipeline is also arranged in the pipe body. The utility model has the benefits that the filter is in threaded connection with one end of the pipeline, so that the filter is convenient to mount and replace; and a step part and a sealing ring are arranged to seal a connecting position, so that the sealing performance of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fresh air filters, and in particular relates to a fresh air filter pipeline and a filter component that are easy to replace. Background Art

[0002] As a special closed environment, the negative pressure isolator box is widely used in medical, scientific research and other fields, and has strict requirements on the air quality inside the box. As a key device to maintain the air quality inside the negative pressure isolator box, the performance and reliability of the fresh air system are crucial. As the core component of the fresh air system, the convenience of installation and replacement, the degree of damage to the pipeline, and the sealing performance of the fresh air filter directly affect the use effect of the negative pressure isolator box.

[0003] There are some problems with the application of traditional fresh air filters in negative pressure isolator boxes. First, traditional filters are usually installed in the pipe cavity and connected to the pipe by interference fit. Under this connection method, a large amount of external force needs to be applied when installing and replacing the filter, which increases the difficulty of operation and easily causes deformation or damage to the pipe. The replacement process of the fresh air filter is often complicated and time-consuming. To solve the above problems, we propose a pipe and filter assembly that is easy to replace the fresh air filter. Summary of the invention

[0004] The utility model aims to provide a pipeline and a filter assembly which are convenient for replacing a fresh air filter.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pipe for facilitating replacement of a fresh air filter comprises a pipe body, wherein the inner wall of the port of the pipe body is provided with an internal thread; a step portion is also provided in the pipe body, the step portion is connected to the internal thread and protrudes from the surface of the internal thread; a sealing gasket is provided on the side of the step portion facing the internal thread; and a valve for opening and closing the pipe is also provided in the pipe body.

[0007] Preferably, the side wall of the pipeline is provided with at least one connecting pipe opening.

[0008] Preferably, a sewage outlet is provided at the bottom of the pipeline.

[0009] Preferably, a groove is formed on the contact surface of the sealing gasket.

[0010] Preferably, the valve is a pneumatic butterfly valve.

[0011] A filter assembly includes the above-mentioned fresh air filter duct that is easy to replace, the filter includes a shell and a filter element arranged in the shell, an air outlet is respectively opened at both ends of the shell, and a mounting port is also set at one end, the mounting port is threadedly connected to the end of the tube body, and the end of the mounting port abuts against the step portion.

[0012] The utility model has the beneficial effects that the filter is threadedly connected to one end of the pipeline, which is convenient for installation and replacement; the connection position is sealed by setting the step portion and the sealing ring, thereby improving the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a fresh air filter duct and a filter assembly that is easy to replace in the utility model;

[0014] Figure 2 It is a side sectional view of a fresh air filter duct and a filter assembly that is easy to replace in the utility model;

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure enlargement at the center A;

[0016] Among them: pipe body 10, step portion 12, sealing gasket 14, valve 16, connecting pipe port 18, sewage pipe port 20, filter 22, shell 24, filter element 26, installation port 28. DETAILED DESCRIPTION

[0017] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0018] like Figures 1 to 3 As shown, the utility model is a pipeline for facilitating replacement of a fresh air filter, comprising a pipe body 10, the inner wall of the port of the pipe body 10 being provided with an internal thread; a step portion 12 is also provided inside the pipe body 10, the step portion 12 is connected to the internal thread and protrudes from the surface of the internal thread; a sealing gasket 14 is provided on the side of the step portion 12 facing the internal thread, and a groove is provided on the contact surface of the sealing gasket 14; a valve 16 for opening and closing the pipe is also provided inside the pipe body 10.

[0019] Furthermore, at least one connecting pipe opening 18 is provided on the side wall of the pipeline, a sewage discharge pipe opening 20 is provided at the bottom of the pipeline, and the valve 16 is a pneumatic butterfly valve.

[0020] The utility model also provides a filter 22 assembly, including a shell 24 and a filter element 26 arranged in the shell 24, an air outlet is respectively provided at both ends of the shell 24, and a mounting port 28 is also provided at one end, the mounting port 28 is threadedly connected to the end of the tube body 10, the end of the mounting port 28 abuts against the step portion 12, and the end of the mounting port 28 extends into the groove of the sealing gasket 14 to cooperate with it.

[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fresh air filter duct that is easy to replace, comprising a tube body, characterized in that: The inner wall of the port of the tube body is provided with an internal thread; a step portion is provided in the tube body, the step portion is connected to the internal thread and protrudes from the surface of the internal thread; a sealing gasket is provided on the side of the step portion facing the internal thread; and a valve for opening and closing the pipeline is also provided in the tube body.

2. The fresh air filter duct that is easy to replace according to claim 1 is characterized in that: The side wall of the pipeline is provided with at least one connecting pipe opening.

3. The fresh air filter duct that is easy to replace according to claim 1 is characterized in that: A sewage discharge pipe opening is arranged at the bottom of the pipeline.

4. The fresh air filter duct that is easy to replace according to claim 1 is characterized in that: The contact surface of the sealing gasket is provided with a groove.

5. The fresh air filter duct that is easy to replace according to claim 1 is characterized in that: The valve is a pneumatic butterfly valve.

6. A filter assembly, comprising the easily replaceable fresh air filter duct according to any one of claims 1 to 5, characterized in that: The filter includes a shell and a filter element arranged in the shell. An air outlet is respectively provided at both ends of the shell, and a mounting port is also provided at one end. The mounting port is threadedly connected to the end of the tube body, and the end of the mounting port abuts against the step portion.

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