Filter box for filter element

Abstract

The utility model relates to the technical field of protective articles, and discloses a filter box for a filter element, which comprises a fixing frame and a box cover detachably mounted on the outer side of the fixing frame, the fixing frame and the box cover are both provided with a plurality of first through holes, first filter cotton and second filter cotton are arranged between the fixing frame and the box cover, a support frame is arranged between the first filter cotton and the second filter cotton, and the through holes are formed in the support frame. A plurality of second through holes are formed in the supporting frame, round holes are formed in the centers of the second filter cotton and the supporting frame, a limiting pipe matched with the round holes in diameter is fixedly connected to the center of the fixing frame, the limiting pipe is sleeved with the second filter cotton and the supporting frame through the round holes, and a clamping block used for being connected with a dustproof mask is arranged on the inner side of the end, away from the protective cover, of the limiting pipe. When the filter cotton is dirty or the air suction resistance is obviously increased, only the box cover needs to be opened to replace the filter cotton I and the filter cotton II, and the support frame can be repeatedly used, so that the use cost can be reduced, and meanwhile, the dustproof filtering effect can be improved through the double layers of filter cotton.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protective articles, and specifically relates to a filter box for filter elements. BACKGROUND

[0002] As a core component of respiratory protection, the service life of the filter element is affected by factors such as the concentration of particulate matter in the air, the breathing rate of the user, the environmental temperature and humidity conditions, etc. If the filter cotton is dirty, damaged or the inhalation resistance is significantly increased, it must be replaced, so the filter cotton is replaced frequently during use.

[0003] At present, the filter cotton used in the double-tank dust mask on the market is mostly disposable filter cotton. The filter cotton is supported by a keel and is inserted into the mask interface through an interface, and cannot be reused, so the overall use cost is high. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is that the filter cotton used in the double-tank dust mask is disposable filter cotton, the filter cotton is supported by a keel and cannot be reused, and the use cost is high.

[0005] In order to solve the above problems, the technical scheme of the utility model is as follows: a filter box for filter elements, comprising a fixing frame and a box cover detachably installed on the outer side of the fixing frame, a plurality of through holes one are formed on the fixing frame and the box cover, and filter cotton one and filter cotton two are arranged between the fixing frame and the box cover, a support frame is arranged between the filter cotton one and the filter cotton two, a plurality of through holes two are formed on the support frame, a circular hole is formed at the center of the filter cotton two and the support frame, a limiting tube with a diameter matching the circular hole is fixed at the center of the fixing frame, the filter cotton two and the support frame are sleeved outside the limiting tube through the circular hole, and a clamping block for connecting the dust mask is arranged on the inner side of the end of the limiting tube away from the protective cover.

[0006] Further, an external thread is arranged on the upper part of the side surface of the fixing frame, and an internal thread matching the external thread is arranged on the inner side wall of the box cover.

[0007] Further, a circular plate is arranged at the center of the box cover, and the diameter of the circular plate is greater than the outer diameter of the limiting tube.

[0008] Further, the support frame comprises three circular rings with diameters increasing from inside to outside, the three circular rings are connected and fixed by a plurality of connecting rods, the inner diameter of the circular ring on the inner side is equal to the outer diameter of the limiting tube, and the outer diameter of the circular ring on the outer side is equal to the inner diameter of the box cover.

[0009] Compared with the prior art, the utility model has the advantages that when the filter cotton is dirty or the inhalation resistance is significantly increased, the filter cotton one and the filter cotton two can be replaced only by opening the box cover, the support frame can be reused, the use cost can be reduced, and the dust filtering effect can be improved through the double-layer filter cotton.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the perspective view of the utility model Figure 1 .

[0011] Figure 2 is the perspective view of the utility model Figure 2 .

[0012] Figure 3 is the sectional view of the utility model.

[0013] Figure 4 is the explosion view of the utility model.

[0014] As shown in the figure: 1, fixed frame; 2, box cover; 3, filter cotton one; 4, filter cotton two; 5, support frame; 6, limiting tube. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0016] As Figures 1 to 3 shown, a filter box for filtering element, including fixed frame 1 and detachable installation in the outer side of fixed frame 1 box cover 2, fixed frame 1 and box cover 2 all are equipped with a plurality of through hole one, fixed frame 1 upper side is equipped with external thread, the inner side wall of box cover 2 is equipped with the internal thread of the meshing of external thread, fixed frame 1 and box cover 2 between being equipped with filter cotton one 3 and filter cotton two 4.

[0017] Fixed frame 1 and box cover 2 are detachable setting, it is convenient for filter cotton one 3 and filter cotton two 4 to dismount and replace, through the setting of two layers of filter cotton can improve the filtering effect.

[0018] As Figure 4 shown, filter cotton one 3 and filter cotton two 4 between being equipped with support frame 5, support frame 5 is equipped with a plurality of through hole two, and filter cotton two 4 and the center of support frame 5 all are equipped with round hole, the center of fixed frame 1 is fixedly connected with the limiting tube 6 of the diameter of the meshing of round hole, filter cotton two 4 and support frame 5 are set outside limiting tube 6 through round hole, support frame 5 includes three circular rings that diameter increases gradually from inside to outside, three circular rings are connected and fixed through a plurality of connecting rods, and the inner diameter of circular ring located in the inside is equal to the outer diameter of limiting tube 6, the outer diameter of circular ring located in the outside is equal to the inner diameter of protective cover 2, the inner side of the end of limiting tube 6 away from protective cover 2 is equipped with the clamping block for connecting dust mask.

[0019] Filter cotton one 3 and filter cotton two 4 are separated by support frame 5 to avoid the two filter cottons being connected together and to improve the air permeability.

[0020] In specific use, the filter box is connected to a dust mask through limiting pipe 6, when filter cotton is dirty or the air suction resistance is obviously increased, filter cotton one 3 and filter cotton two 4 can be replaced only by opening box cover 2, support frame 5 can be repeatedly used, and thus the use cost can be reduced.

[0021] The parts not disclosed in the utility model are all prior art, and the specific structure and working principle will not be described again.

[0022] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0023] Although the embodiments of the utility model have been shown and described, it should be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0024] The utility model and its implementation have been described above, and this description is not restrictive, and the embodiment shown in the drawings is only one of the embodiments of the utility model, and the actual structure is not limited thereto. In summary, if those of ordinary skill in the art are inspired by it, without departing from the creative purpose of the utility model, without creative design, similar structure and embodiments of the technical scheme can be designed, which should belong to the protection scope of the utility model.

Claims

1. A filter cartridge for a filter element, characterized by: The utility model provides a filter device, including fixed frame (1) and detachable installation protective cover (2) outside fixed frame (1), a plurality of through -holes no.

2. A filter cassette for a filter element according to claim 1, characterized in that: The outer side of the fixed frame (1) is provided with external threads, and the inner wall of the protective cover (2) is provided with internal threads matched with the external threads.

3. A filter cartridge for a filter element according to claim 1, characterized in that: The center of the protective cover (2) is provided with a circular plate, and the diameter of the circular plate is greater than the outer diameter of the limiting tube (6).

4. A filter cartridge for a filter element according to claim 1, characterized in that: The support frame (5) includes three circular rings with diameters increasing from inside to outside, and the three circular rings are connected and fixed by a plurality of connecting rods. The inner diameter of the circular ring on the inner side is equal to the outer diameter of the limiting tube (6), and the outer diameter of the circular ring on the outer side is equal to the inner diameter of the protective cover (2).

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