Air filtering device for nitrogen making machine

Abstract

The utility model discloses an air filtering device for a nitrogen making machine, which relates to the technical field of nitrogen making machines and comprises a nitrogen making machine body, a butt joint pipe is connected onto the nitrogen making machine body in a penetrating manner, the other end of the butt joint pipe is connected with an air filtering box in a penetrating manner, and the other side of the air filtering box is in butt joint with the rear end of an air compressor. The fixed rails are fixedly connected to the upper side and the lower side of the interior of the air filter box, a filter element is connected between the fixed rails in a nested mode, and the outer end of the filter element is fixedly connected with a connecting plate. According to the air filtering device for the nitrogen making machine, when a butt-joint groove formed in the side end of a filter element corresponds to a storage groove in position, a butt-joint block is not blocked by the filter element, and the butt-joint block is driven by the elastic acting force of a spring to pop up inwards to reset and enter the butt-joint groove at the moment, so that the filter element is further limited and fixed; and the mounting stability of the filter element is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen generators, in particular to an air filtering device for a nitrogen generator. Background Technique

[0002] A nitrogen generator is a device that uses air as a raw material and uses physical methods to separate oxygen and nitrogen in it to obtain nitrogen. Its working principle is mainly based on air separation technology to achieve the extraction of nitrogen;

[0003] During the operation of the nitrogen generator, the main function of the air filter is to remove impurities such as solid particles, dust, moisture, harmful gases, and odors in the air. If these impurities enter the nitrogen generation system, they may cause damage to internal components, reduce the service life of the equipment, and also affect the purity and quality of nitrogen. Air filtration is an important step to ensure the efficient and stable operation of the nitrogen generator and produce high-quality nitrogen;

[0004] In order to overcome the above defects, Prior Art 1 (Chinese Patent with Publication No. CN111905484A and Publication Date of November 10, 2020) is a nitrogen generator with a function of filtering dust. This nitrogen generator with a function of filtering dust is provided with a filtering mechanism. The screen in the filtering mechanism can initially filter the air entering the filtering box, so as to initially filter the relatively large-volume dust and other fiber impurities in the air. At the same time, an activated carbon filter screen is provided, and the activated carbon filter screen can adsorb the tiny impurities in the air after the initial filtration, so as to improve the filtering quality of the device to a certain extent.

[0005] There is also Prior Art 2 (Chinese Patent with Publication No. CN111847398A and Publication Date of October 30, 2020), a mobile nitrogen generator with a filtering function. In the connecting housing of this mobile nitrogen generator with a filtering function, a first filter screen and a second filter screen are provided. Under the action of the first filter screen and the second filter screen, the compressed air can be filtered to reduce the dust impurities contained in the compressed air from entering the main body of the nitrogen generator. The water in the water collecting chamber is sprayed out through a spray pipe by a booster water pump, and the first filter screen and the second filter screen can be cleaned to maintain their permeability.

[0006] Although Prior Art 1 and Prior Art 2 are provided with a filtering mechanism that can purify the air, most of their filtering mechanisms are arranged inside the device, and it is not convenient to disassemble the filtering mechanism. When the filtering mechanism performs air filtering operations for a long time, its filtering effect will be reduced, thus affecting the subsequent nitrogen generation operations.

[0007] Therefore, we propose an air filtering device for a nitrogen generator to solve the above-mentioned problems. Summary of the Utility Model

[0008] The purpose of the present utility model is to provide an air filtration device for a nitrogen generator, so as to solve the problem proposed in the above-mentioned background technology that the filtration mechanism cannot be disassembled conveniently. When the filtration mechanism conducts air filtration operations for a long time, its filtration effect will be reduced, affecting subsequent nitrogen production operations.

[0009] To achieve the above object, the present utility model provides the following technical solution: An air filtration device for a nitrogen generator, including a nitrogen generator body, a docking pipe is connected through the nitrogen generator body, and the other end of the docking pipe is connected through an air filtration box, and the other side of the air filtration box is docked with the rear end of an air compressor;

[0010] Fixed rails, the fixed rails are fixedly connected to the upper and lower sides inside the air filtration box, and a filter element is nested between the fixed rails, and a connecting plate is fixedly connected to the outer end of the filter element, and a connecting plate is fixedly connected to the outer side of the connecting plate. A limiting mechanism is provided between the inner side of the connecting plate and the outer side of the air filtration box, and the filter element can be assisted in positioning through the limiting mechanism;

[0011] A storage groove, the storage groove is opened on the inner side of the fixed rail, a docking groove is opened on the inner end side of the filter element, and a fixing mechanism is provided between the docking groove and the storage groove, and the filter element can be quickly disassembled and assembled through the fixing mechanism.

[0012] Further, the limiting mechanism includes a first magnetic block, the first magnetic block is fixedly connected to the outer surface of the air filtration box, the upper and lower ends of the inner side of the connecting plate are fixedly connected with second magnetic blocks, and the left and right ends of the inner side of the connecting plate are fixedly connected with sealing strips.

[0013] Further, four groups of filter elements are arranged inside the air filtration box, and the side of the filter element is in contact with the inner wall of the air filtration box, and the four groups of filter elements are equally spaced.

[0014] Further, the length of the sealing strip is greater than the maximum value of the length of the filter element, the first magnetic blocks and the second magnetic blocks are arranged in one-to-one correspondence, and the first magnetic blocks and the second magnetic blocks are different-named magnets.

[0015] Further, the fixing mechanism includes a docking block, the inner end of the docking block is nested inside the storage groove, and a spring is fixedly connected between the inner end of the docking block and the inner wall of the storage groove.

[0016] Further, when the positions of the docking groove and the storage groove correspond, the outer end of the docking block is nested inside the storage groove.

[0017] Furthermore, the outer end of the docking block is designed in an arc shape, and the docking block and the receiving groove form an elastic structure through a spring. Two groups of receiving grooves are symmetrically arranged about the center point of the filter element on the left and right.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. The air filter box is docked with the nitrogen generator body through a docking pipe. The air compressed by the air compressor is transported to the inside of the air filter box through a pipeline. At this time, the air filter box can perform a filtering operation on the air, and the filtered air can be transported to the inside of the nitrogen generator body through the docking pipe, thereby improving the efficiency of nitrogen production;

[0020] 2. The user can hold the handle and nest the filter element into the fixed rail. The user continuously pushes the filter element inward so that the side of the filter element fits against the inner wall of the air filter box. The four filter elements cooperate with each other to further improve the air filtering effect, filter dust particles in the air, and thereby further improve the purity and cleanliness of nitrogen;

[0021] 3. When the filter element completely enters the inside of the air filter box, the inner wall of the connecting plate fits against the outer wall of the air filter box. At this time, the second magnetic block fits against the first magnetic block under its own magnetic force, so that the connecting plate is tightly arranged outside the air filter box. The sealing strips on the left and right sides of the inner wall of the connecting plate are simultaneously attached to the outside of the air filter box, thereby improving the sealing performance of the placement of the filter element and further improving the air filtering efficiency;

[0022] 4. When the filter element is being pushed in, its inner side will squeeze and push the docking block, causing the docking block to move into the docking groove. At this time, the docking block does not block the filter element, and the inner side of the filter element can fit against the inner wall of the air filter box, thereby completing the rapid installation of the filter element;

[0023] 5. When the docking groove opened on the side of the filter element corresponds to the position of the receiving groove, the docking block is not blocked by the filter element. At this time, the docking block is driven by the elastic force of the spring, will pop inward to reset, and enter the docking groove, thereby further limiting and fixing the filter element and improving the stability of the installation of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0025] Figure 2 is a three-dimensional structural schematic diagram of the air filter box of the present utility model;

[0026] Figure 3 is a three-dimensional structural schematic diagram of the fixed rail of the present utility model;

[0027] Figure 4 This is a schematic three-dimensional sectional view of the air filter box of the present utility model;

[0028] Figure 5 This is a schematic three-dimensional structure view of the first magnet block of the present utility model;

[0029] Figure 6 This is a schematic three-dimensional structure view of the docking block of the present utility model.

[0030] In the figure: 1, the main body of the nitrogen generator; 2, the docking pipe; 3, the air filter box; 4, the connecting plate; 5, the first magnet block; 6, the second magnet block; 7, the handle; 8, the filter element; 9, the fixed rail; 10, the sealing strip; 11, the docking groove; 12, the storage groove; 13, the spring; 14, the docking block. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1: As shown in Figure 1 and Figure 2 for this technical solution, the present utility model provides the following technical solution: An air filtering device for a nitrogen generator, which discloses an air filter box 3, and the air can be filtered through the air filter box 3:

[0033] The main body 1 of the nitrogen generator has a docking pipe 2 penetratingly connected thereto, and the other end of the docking pipe 2 is penetratingly connected to an air filter box 3, and the other side of the air filter box 3 is docked with the rear end of an air compressor;

[0034] The air filter box 3 is docked with the main body 1 of the nitrogen generator through the docking pipe 2. The air compressed by the air compressor is conveyed to the inside of the air filter box 3 through a pipeline. At this time, the air filter box 3 can perform a filtering operation on the air, and the filtered air can be conveyed to the inside of the main body 1 of the nitrogen generator through the docking pipe 2, thereby improving the nitrogen production efficiency.

[0035] Embodiment 2: As shown in Figure 2 , Figure 3 and Figure 5 for this technical solution, the present utility model provides the following technical solution: An air filtering device for a nitrogen generator, which discloses a limiting mechanism, and the auxiliary limitation of the filter element 8 can be realized through the limiting mechanism:

[0036] The fixed rails 9 are fixedly connected to the upper and lower sides inside the air filter box 3. A filter element 8 is nested between the fixed rails 9. The outer end of the filter element 8 is fixedly connected to a connecting plate 4. At the same time, the outer side of the connecting plate 4 is fixedly connected to the connecting plate 4. A limiting mechanism is provided between the inner side of the connecting plate 4 and the outer side of the air filter box 3. The filter element 8 can be assisted in being limited through the limiting mechanism;

[0037] The limiting mechanism includes a first magnetic block 5 fixedly connected to the outer surface of the air filter box 3. Second magnetic blocks 6 are fixedly connected to the upper and lower ends of the inner side of the connecting plate 4. Sealing strips 10 are fixedly connected to the left and right ends of the inner side of the connecting plate 4. Four groups of filter elements 8 are arranged inside the air filter box 3. The side of the filter element 8 is in contact with the inner wall of the air filter box 3. The four groups of filter elements 8 are equally spaced. The length of the sealing strip 10 is greater than the maximum value of the length of the filter element 8. The first magnetic blocks 5 and the second magnetic blocks 6 are arranged in one-to-one correspondence, and the first magnetic blocks 5 and the second magnetic blocks 6 are opposite-pole magnets.

[0038] The user can hold the handle 7 and push the filter element 8 nested onto the fixed rails 9. The user continuously pushes the filter element 8 inward so that the side of the filter element 8 is in contact with the inner wall of the air filter box 3. The four groups of filter elements 8 cooperate with each other to further improve the air filtration effect, filter the dust particles in the air, and thus further improve the purity and cleanliness of nitrogen. When the filter element 8 completely enters the air filter box 3, the inner wall of the connecting plate 4 is in contact with the outer wall of the air filter box 3. At this time, the second magnetic block 6 is attached to the first magnetic block 5 under its own magnetic force, so that the connecting plate 4 is tightly arranged on the outer side of the air filter box 3. The sealing strips 10 on the left and right sides of the inner wall of the connecting plate 4 are simultaneously in contact with the outer side of the air filter box 3, thereby improving the sealing performance of the placement of the filter element 8, and further improving the air filtration efficiency.

[0039] Embodiment 3: As Figure 2 、 Figure 4 and Figure 6 shown in the technical solution, the present utility model provides the following technical solution: An air filtering device for a nitrogen generator discloses a fixing mechanism. The filter element 8 can be quickly disassembled and assembled through the fixing mechanism:

[0040] A storage groove 12 is opened inside the fixed rail 9. A docking groove 11 is opened at the inner end side of the filter element 8. A fixing mechanism is provided between the docking groove 11 and the storage groove 12. The filter element 8 can be quickly disassembled and assembled through the fixing mechanism;

[0041] The fixing mechanism includes a docking block 14. The inner end of the docking block 14 is nested and connected inside the receiving groove 12, and a spring 13 is fixedly connected between the inner end of the docking block 14 and the inner wall of the receiving groove 12. When the docking groove 11 corresponds to the position of the receiving groove 12, the outer end of the docking block 14 is nested and connected inside the receiving groove 12. The outer end of the docking block 14 is arc-shaped, and the docking block 14 and the receiving groove 12 form an elastic structure through the spring 13. Two groups of receiving grooves 12 are symmetrically arranged about the center point of the filter element 8.

[0042] When the filter element 8 is being pushed in, its inner side will squeeze and push the docking block 14, causing the docking block 14 to move into the docking groove 11. At this time, the docking block 14 does not block the filter element 8, and the inner side of the filter element 8 can be attached to the inner wall of the air filter box 3, thus completing the rapid installation of the filter element 8. When the docking groove 11 opened on the side of the filter element 8 corresponds to the position of the receiving groove 12, the docking block 14 is not blocked by the filter element 8. At this time, the docking block 14 will pop inward and reset under the driving force of the elastic force of the spring 13 and enter into the docking groove 11, thereby further limiting and fixing the filter element 8 and improving the stability of the installation of the filter element 8.

[0043] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air filter device for a nitrogen generator, comprising a nitrogen generator body (1), a butt joint pipe (2) penetrating the nitrogen generator body (1), an air filter box (3) penetrating the other end of the butt joint pipe (2), and the other side of the air filter box (3) being connected to the rear end of an air compressor; Features: Also includes: A fixed rail (9), wherein the fixed rail (9) is fixedly connected to the upper and lower sides of the interior of the air filter box (3), and a filter element (8) is nested and connected between the fixed rails (9), and the outer end of the filter element (8) is fixedly connected to a connecting plate (4), and the outer side of the connecting plate (4) is fixedly connected to a connecting plate (4), and a limiting mechanism is provided between the inner side of the connecting plate (4) and the outer side of the air filter box (3), and auxiliary limiting of the filter element (8) can be achieved through the limiting mechanism; A receiving groove (12) is provided on the inner side of the fixing rail (9), a docking groove (11) is provided on the inner side of the filter element (8), a fixing mechanism is provided between the docking groove (11) and the receiving groove (12), and the filter element (8) can be quickly disassembled and assembled through the fixing mechanism.

2. The air filter device for nitrogen generator according to claim 1, characterized in that: The limiting mechanism comprises a first magnetic block (5), the first magnetic block (5) being fixedly connected to the outer surface of the air filter box (3), the upper and lower ends of the inner side of the connecting plate (4) being fixedly connected to the second magnetic block (6), and the left and right ends of the inner side of the connecting plate (4) being fixedly connected to the sealing strip (10).

3. The air filter device for nitrogen generator according to claim 2, characterized in that: Four groups of filter elements (8) are arranged inside the air filter box (3), and the sides of the filter elements (8) are in contact with the inner wall of the air filter box (3), and the four groups of filter elements (8) are spaced at equal distances.

4. The air filter device for a nitrogen generator according to claim 2, characterized in that: The length of the sealing strip (10) is greater than the maximum length of the filter element (8); the first magnetic block (5) and the second magnetic block (6) are arranged in a one-to-one correspondence, and the first magnetic block (5) and the second magnetic block (6) are magnets of different names.

5. The air filter device for a nitrogen generator according to claim 1, characterized in that: The fixing mechanism comprises a docking block (14), the inner end of the docking block (14) being nested and connected inside the receiving groove (12), and a spring (13) being fixedly connected between the inner end of the docking block (14) and the inner wall of the receiving groove (12).

6. The air filter device for a nitrogen generator according to claim 5, characterized in that: When the positions of the docking groove (11) and the receiving groove (12) correspond, the outer end of the docking block (14) is nested and connected to the inner side of the receiving groove (12).

7. The air filter device for a nitrogen generator according to claim 5, characterized in that: The outer end of the docking block (14) is designed to be arc-shaped, and the docking block (14) forms an elastic structure with the receiving groove (12) through the spring (13), and the receiving groove (12) is provided with two groups symmetrically about the center point of the filter element (8).

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