Pre-filtering structure for gas analyzer

Abstract

The utility model relates to the technical field of gas analyzers, and discloses a pre-filtering structure for a gas analyzer, which comprises a filtering bin, a gas inlet pipe is fixedly assembled on the outer wall of the filtering bin, a gas outlet pipe is mounted on the outer wall of the filtering bin, and a control panel is fixedly assembled on the outer wall of the filtering bin. An audible and visual alarm is fixedly assembled on the outer wall of the filtering bin, an air velocity sensor is fixedly assembled in an inner cavity of the air outlet pipe, and a mounting frame is mounted in the inner cavity of the filtering bin. According to the pre-filtering structure for the gas analyzer, the filter screen and the filter plate are arranged in the inner cavity of the filter bin, impurities in air can be filtered under the action of the filter screen, so that the impurities cannot penetrate through the filter screen, and then dust in the air is filtered under the action of the filter plate; impurities and dust in the air can be removed before the air enters the gas analyzer, so that the influence on the normal use of the gas analyzer is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas analyzer technical field, specifically is a kind of pre-filter structure for gas analyzer. BACKGROUND

[0002] With the continuous development of gas measurement technology, the types of measuring gas equipment produced are also increasing, and the gas analyzer is a kind of instrument for measuring gas composition. The gas analyzer mainly uses gas sensors to detect the types of gases present in the environment.

[0003] When the traditional gas analyzer is used, the external air is usually directly introduced into the inner cavity of the gas analyzer, but the external air often contains some larger impurities and dust. The traditional equipment cannot filter the impurities and dust, so that they will enter the inner cavity of the gas analyzer along with the air and adhere to some electronic components in the gas analyzer, thereby causing damage to the gas analyzer. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a pre-filter structure for a gas analyzer, which has the advantages of filtering air and facilitating replacement of the filter box, and solves the problems raised in the above background art.

[0005] The utility model provides the following technical scheme: a kind of pre-filter structure for gas analyzer, including filter bin, the outer wall of the filter bin is fixedly equipped with air inlet pipe, the outer wall of the filter bin is installed with air outlet pipe, the outer wall of the filter bin is fixedly equipped with control panel, the outer wall of the filter bin is fixedly equipped with sound-light alarm, the inner cavity of the air outlet pipe is fixedly equipped with air flow velocity sensor, the inner cavity of the filter bin is installed with mounting bracket, the inner wall of the mounting bracket is fixedly equipped with mounting groove, the inner cavity of the mounting groove is movably sleeved with filter plate, the inner cavity of the mounting groove is movably sleeved with filter box, the outer wall of the filter bin is rotatably connected with rotating stand, the inner cavity of the rotating stand is movably sleeved with pull rod, the outer wall of the pull rod is fixedly equipped with pressing plate, the outer wall of the pull rod is movably sleeved with drive spring, the inner cavity of the filter bin is equipped with placing groove.

[0006] As a preferred technical scheme of the utility model: the control panel is electrically connected between air flow velocity sensor and sound-light alarm respectively, and the filter box is prepared from coarse non-woven fabric.

[0007] As a preferred technical scheme of the utility model: the shape of the outer wall of the mounting bracket matches the size of the inner wall of the placing groove, and the mounting bracket is prepared from ABS plastic.

[0008] As a preferred technical solution of this utility model: the two ends of the outer wall of the drive spring are in contact with the outer walls of the pressure plate and the rotating frame, respectively, and the length of the drive spring when it is stationary and not under force is less than half the length of the pull rod.

[0009] As a preferred technical solution of this utility model: there are two rotating frames, and the two rotating frames are respectively installed on the outer walls of the two sides of the filter chamber.

[0010] As a preferred technical solution of this utility model: the filter plate is installed on the inner wall of the mounting bracket near the air inlet pipe, and the filter plate is made of stainless steel.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This gas analyzer uses a pre-filtration structure. Through the filter screen and filter plate installed in the inner cavity of the filter chamber, the filter screen can filter impurities in the air, preventing them from passing through. Subsequently, the filter plate can filter dust in the air. This allows impurities and dust in the air to be removed before the air enters the gas analyzer, avoiding any impact on the normal operation of the gas analyzer.

[0013] 2. This gas analyzer uses a pre-filtration structure. A rotating plate on the outer wall of the filter chamber, driven by a spring and a pressure plate, secures the mounting frame, ensuring its stable installation within the filter chamber. When maintenance or replacement of the filter plates and filter boxes on the inner wall of the mounting frame is required, pulling the lever and rotating the plate unlocks the mounting frame. This makes replacement of the filter plates and filter boxes convenient and allows for timely detection of reduced flow rate by the air velocity sensor, enabling prompt replacement of the filter plates and filter boxes. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter chamber of this utility model;

[0016] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the air outlet pipe structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the rotating frame structure of this utility model.

[0019] In the figure: 1, filter bin; 2, air inlet pipe; 3, air outlet pipe; 4, control panel; 5, audible and light alarm; 6, air flow sensor; 7, mounting bracket; 8, mounting groove; 9, filter plate; 10, filter box; 11, rotating bracket; 12, pull rod; 13, drive spring; 14, pressing plate; 15, placing groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. 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 scope of protection of the utility model.

[0021] Please refer to Figure 1 - Figure 5 A pre-filtering structure for a gas analyzer, comprising a filter bin 1, the outer wall of the filter bin 1 is fixedly provided with an air inlet pipe 2, the outer wall of the filter bin 1 is provided with an air outlet pipe 3, the outer wall of the filter bin 1 is fixedly provided with a control panel 4, the outer wall of the filter bin 1 is fixedly provided with an audible and light alarm 5, the inner cavity of the air outlet pipe 3 is fixedly provided with an air flow sensor 6, the inner cavity of the filter bin 1 is provided with a mounting bracket 7, the inner wall of the mounting bracket 7 is fixedly provided with a mounting groove 8, the inner cavity of the mounting groove 8 is movably sleeved with a filter plate 9, the inner cavity of the mounting groove 8 is movably sleeved with a filter box 10, the outer wall of the filter bin 1 is rotatably connected with a rotating bracket 11, the inner cavity of the rotating bracket 11 is movably sleeved with a pull rod 12, the outer wall of the pull rod 12 is fixedly provided with a pressing plate 14, the outer wall of the pull rod 12 is movably sleeved with a drive spring 13, and the inner cavity of the filter bin 1 is provided with a placing groove 15.

[0022] In the above structure, the mounting bracket 7 provided in the inner cavity of the filter bin 1, and the filter plate 9 and the filter box 10 mounted on the inner wall of the mounting bracket 7, under the action of the filter plate 9, the air entering the inner cavity of the filter bin 1 can be preliminarily filtered to remove larger impurities, and under the action of the filter box 10, the dust in the air can be adsorbed, thereby avoiding the dust from entering the inner cavity of the gas analyzer.

[0023] In a preferred embodiment: the control panel 4 is electrically connected between the air flow sensor 6 and the audible and light alarm 5, and the filter box 10 is made of coarse non-woven fabric.

[0024] In the structure, the air flow sensor 6 is arranged in the inner cavity of the air outlet pipe 3, and the air flow sensor 6 can monitor the air flow in the inner cavity of the air outlet pipe 3. When the air flow in the inner cavity of the air outlet pipe 3 is lower than the preset value of the air flow sensor 6, the audible and visual alarm 5 is started under the control of the control panel 4, and the user is reminded by the audible and visual alarm 5.

[0025] In a preferred embodiment, the outer wall of the mounting frame 7 is matched with the inner wall of the placing groove 15 in size, and the mounting frame 7 is made of ABS plastic.

[0026] In the structure, the placing groove 15 is arranged in the inner cavity of the filter bin 1, the mounting frame 7 is arranged in the inner cavity of the filter bin 1, the filter plate 9 and the filter box 10 are arranged on the inner wall of the mounting frame 7, and the filter plate 9 and the filter box 10 can filter and adsorb air respectively, so that large impurities and dust in the air are removed.

[0027] In a preferred embodiment, the outer wall of the driving spring 13 is in contact with the outer wall of the pressing plate 14 and the rotating frame 11 at both ends, and the length of the driving spring 13 in the state of being not stressed is less than half of the length of the pull rod 12.

[0028] In the structure, the driving spring 13 is arranged on the outer wall of the pull rod 12, and when the driving spring 13 is arranged on the outer wall of the pull rod 12, the driving spring 13 is in a compressed state, so that the driving spring 13 applies an elastic force to the outer wall of the pressing plate 14, and the pull rod 12 and the pressing plate 14 have a downward movement tendency, thereby realizing the fixation of the mounting frame 7 under the action of the pull rod 12 and the pressing plate 14.

[0029] In a preferred embodiment, the number of the rotating frames 11 is two, and the two rotating frames 11 are arranged on the outer walls of the two sides of the filter bin 1.

[0030] In the structure, the rotating frames 11 are arranged on the two sides of the filter bin 1, and the pull rods 12 are arranged in the inner cavities of the two rotating frames 11, so that the fixation of the mounting frame 7 is realized on the two sides, and the mounting frame 7 can be stably arranged in the inner cavity of the filter bin 1.

[0031] In a preferred embodiment, the filter plate 9 is arranged on the inner wall of the mounting frame 7 close to the air inlet pipe 2, and the filter plate 9 is made of stainless steel.

[0032] In the structure, the filter plate 9 and the filter box 10 are arranged on the inner wall of the mounting frame 7, and the filter plate 9 and the filter box 10 can filter sundries and adsorb dust respectively, so that the sundries and the dust cannot enter the gas analyzer through the inner cavity of the filter bin 1, and the gas analyzer is better protected.

[0033] Working principle: in the use of the above equipment, when the gas analyzer is used, the filter bin 1 is installed outside the gas analyzer, the air outlet pipe 3 is connected with the air inlet of the gas analyzer, then the external air is released into the inner cavity of the filter bin 1 through the air inlet pipe 2, the air passes through the inner cavities of the filter plate 9 and the filter box 10 in turn, the sundries in the air are filtered under the action of the filter plate 9, the sundries in the air are blocked, so that the sundries cannot pass through the inner cavity of the filter plate 9, then the air passes through the filter box 10 again, the dust in the air is adsorbed under the action of the filter box 10, then the air passes through the inner cavity of the filter bin 1 and enters the air outlet pipe 3, and then enters the gas analyzer along the inner cavity of the air outlet pipe 3, when the filter bin 1 is used for the first time, the air flow rate is recorded under the action of the air flow rate sensor 6, and the warning value is set under the action of the control panel 4, once the outer wall of the filter plate 9 and the filter box 10 is blocked, the air flow rate decreases, when the air flow rate is less than the warning value, the audible and visual alarm 5 is started under the action of the control panel 4, and a warning is issued under the action of the audible and visual alarm 5, to prompt the user to replace the filter plate 9 and the filter box 10, when the filter plate 9 and the filter box 10 are replaced, the pressing plate 14 is separated from the top of the mounting frame 7 by pulling the pull rod 12, then the rotating frame 11 is separated from the top of the mounting frame 7 by rotating, then the mounting frame 7 is pulled out from the inner cavity of the filter bin 1, to replace the filter plate 9 and the filter box 10 arranged on the inner wall of the mounting frame 7.

[0034] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pre-filter structure for a gas analyzer comprising a filter cartridge (1), characterized in that: The outer wall of the filter bin (1) is fixedly provided with an air inlet pipe (2), the outer wall of the filter bin (1) is provided with an air outlet pipe (3), the outer wall of the filter bin (1) is fixedly provided with a control panel (4), the outer wall of the filter bin (1) is fixedly provided with an audible and visual alarm (5), the inner cavity of the air outlet pipe (3) is fixedly provided with an air flow sensor (6), the inner cavity of the filter bin (1) is provided with a mounting bracket (7), the inner wall of the mounting bracket (7) is fixedly provided with a mounting groove (8), the inner cavity of the mounting groove (8) is movably sleeved with a filter plate (9), the inner cavity of the mounting groove (8) is movably sleeved with a filter box (10), the outer wall of the filter bin (1) is rotatably connected with a rotating frame (11), the inner cavity of the rotating frame (11) is movably sleeved with a pull rod (12), the outer wall of the pull rod (12) is fixedly provided with a pressing plate (14), the outer wall of the pull rod (12) is movably sleeved with a driving spring (13), and the inner cavity of the filter bin (1) is provided with a placing groove (15).

2. The pre-filter structure for a gas analyzer according to claim 1, characterized in that: The control panel (4) is electrically connected with the air flow sensor (6) and the audible and visual alarm (5), and the filter box (10) is made of coarse non-woven fabric.

3. The pre-filter structure for a gas analyzer according to claim 2, characterized in that: The outer wall of the mounting bracket (7) is matched in shape and size with the inner wall of the placing groove (15), and the mounting bracket (7) is made of ABS plastic.

4. The pre-filter structure for a gas analyzer according to claim 1, characterized in that: The outer wall of the driving spring (13) is in contact with the outer wall of the pressing plate (14) and the rotating frame (11) at both ends, and the length of the driving spring (13) in static state is less than half of the length of the pull rod (12).

5. The pre-filter structure for a gas analyzer according to claim 4, characterized in that: The number of the rotating frame (11) is two, and the two rotating frames (11) are respectively arranged on the outer walls of the two sides of the filter bin (1).

6. The pre-filter structure for a gas analyzer according to claim 1, characterized in that: The filter plate (9) is arranged on the inner wall of the mounting bracket (7) near the side of the air inlet pipe (2), and the filter plate (9) is made of stainless steel.

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