Gas detection device capable of preventing dust from entering

Abstract

The utility model discloses a gas detection device capable of preventing dust from entering, which comprises a filter tube, two guide plates are fixedly connected to the inner wall of the top of the filter tube, a plurality of gas inlets are formed in the top of the filter tube, filter screens are arranged in the plurality of gas inlets in one side, a filter element is fixedly connected to the inner wall of the circumference of the filter tube, and the filter element is fixedly connected to the inner wall of the circumference of the filter tube. A rotating ring is movably connected to the interior of the filter pipe, a fan blade frame is fixedly connected to the interior of the rotating ring, a connecting frame is fixedly connected to the bottom of the fan blade frame, a brush is fixedly connected to the bottom end of the connecting frame and makes contact with the filter element, and a connecting assembly is arranged at the bottom of the filter pipe. The surface of the filter element can be cleaned through the brush, the filter element is prevented from being blocked, the ventilation quantity is reduced, air entering the filter pipe can be primarily filtered through the filter screen, and the flexible plate can adapt to installation of pipelines in different shapes.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection devices, in particular to a gas detection device capable of preventing dust from entering. Background Art

[0002] The detection heads of some gas detection devices are installed in ventilation ducts. When the ventilation ducts are ventilated, dust and other impurities may be contained in the airflow, thus affecting the detection results.

[0003] After searching, the gas detection device with publication number CN207516208U formula fixes the sampling unit to the wall of the ventilation duct through the fixing parts located in the sampling unit, which not only facilitates the installation and maintenance of the detection unit, but also prolongs the service life of the detection unit. However, when there is too much dust, the surface of the filter element is easily blocked, thereby reducing the ventilation volume of the filter element, resulting in poor gas detection efficiency. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a gas detection device which can prevent dust from entering.

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

[0006] A gas detection device capable of preventing dust from entering comprises a filter tube, wherein two guide plates are fixedly connected to the top inner wall of the filter tube, a plurality of air inlets are opened on the top of the filter tube, a plurality of air inlets on one side are internally provided with filter screens, a filter element is fixedly connected to the circumferential inner wall of the filter tube, a swivel is movably connected to the interior of the filter tube, a fan blade frame is fixedly connected to the interior of the swivel, a connecting frame is fixedly connected to the bottom of the fan blade frame, a brush is fixedly connected to the bottom end of the connecting frame, and the brush is in contact with the filter element, and a connecting assembly is provided at the bottom of the filter tube.

[0007] As a further solution of the utility model, the connecting assembly includes a mounting tube, which is threadedly connected to the bottom of the filter tube, a clamping plate is installed on the outside of the mounting tube, both ends of the clamping plate are movably connected to the mounting plate, and a flexible plate is fixedly connected to one side of the mounting plate.

[0008] As a further solution of the utility model, a fixing ring is fixedly connected to the top outer wall of the filter element, and the brush is located inside the fixing ring.

[0009] As a further solution of the utility model, a retaining ring is fixedly connected to the circumferential inner wall of the filter tube, and the retaining ring is located above the fan blade frame.

[0010] As a further solution of the utility model, a rubber pad is fixedly connected to the bottom end of the filter tube, and the rubber pad is in contact with the mounting tube.

[0011] As a further solution of the utility model, a joint is fixedly connected to the bottom end of the mounting pipe.

[0012] As a further solution of the utility model, a reinforcing frame is provided inside the flexible board.

[0013] The beneficial effects of the utility model are:

[0014] 1. The filter element of the utility model filters the dust and impurities entering the filter tube, and the brush cleans the surface of the filter element to avoid clogging of the filter element and reduce the ventilation volume, thereby improving the ventilation effect of the filter element.

[0015] 2. By setting the filter, the position of the filter is changed according to the needs of the pipeline environment, so that the filter can perform initial filtering on the wind entering the filter tube, thereby improving the use effect of the device.

[0016] 3. The flexible plate in the utility model can be deformed to adapt to the installation of pipelines of different shapes, and the guide plate can guide the wind entering the filter tube through the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a gas detection device that can prevent dust from entering, which is proposed by the utility model;

[0018] Figure 2 This is a partial cross-sectional structural schematic diagram of a gas detection device that can prevent dust from entering, which is proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a partially enlarged structure of a gas detection device that can prevent dust from entering, which is proposed by the utility model.

[0020] In the figure: 1. filter tube; 2. mounting tube; 3. mounting plate; 4. flexible plate; 5. joint; 6. clamping plate; 7. air inlet; 8. guide plate; 9. fixing ring; 10. rubber pad; 11. filter screen; 12. filter element; 13. reinforcement frame; 14. swivel; 15. connecting frame; 16. retaining ring; 17. fan blade frame; 18. brush. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-Figure 3A gas detection device capable of preventing dust from entering comprises a filter tube 1, wherein two guide plates 8 are fixed to the inner wall of the top of the filter tube 1 by bolts, and a plurality of air inlets 7 are provided on the top of the filter tube 1, and the guide plates 8 can guide the wind entering the filter tube 1 through the air inlets 7, wherein a filter screen 11 is provided inside the plurality of air inlets 7 on one side, and when the dust at the air inlet is large, the plurality of air inlets 7 equipped with the filter screen 11 are directed toward the air inlet of the pipeline, so that the wind is initially filtered by the filter screen 11 before entering the filter tube 1, and the staff can change the installation position of the filter screen 11 on the filter tube 1 in the pipeline by disassembling the device, and the filter screen 11 within the circumference of the filter tube 1 is A filter element 12 is fixed to the wall by bolts, a swivel 14 is rotatably connected inside the filter tube 1, a fan blade frame 17 is fixed inside the swivel 14 by bolts, a connecting frame 15 is fixed to the bottom of the fan blade frame 17 by bolts, a brush 18 for cleaning the surface of the filter element 12 is fixed to the bottom of the connecting frame 15 by bolts, and the brush 18 is in contact with the filter element 12. Wind enters the filter tube 1 through the air inlet 7, blows the fan blade frame 17 to rotate, so that the connecting frame 15 drives the brush 18 to rotate, and then the brush 18 cleans the surface of the filter element 12 to avoid clogging of the filter element 12. A connecting component is provided at the bottom of the filter tube 1 to facilitate the installation and fixation of the filter tube 1.

[0023] In the utility model, it should be noted that the connecting assembly includes a mounting tube 2, which is threadedly connected to the bottom of the filter tube 1, a clamping plate 6 is installed on the outside of the mounting tube 2, and both ends of the clamping plate 6 are rotatably connected to the mounting plate 3, and a flexible plate 4 is bonded to one side of the mounting plate 3, and the flexible plate 4 can produce deformation to adapt to the installation of pipes of different shapes, and the top outer wall of the filter element 12 is fixed with a fixing ring 9 by bolts, and the brush 18 is located inside the fixing ring 9, and the circumferential inner wall of the filter tube 1 is fixed with a retaining ring 16 by bolts, and the retaining ring 16 is located above the fan blade frame 17, and the retaining ring 16 can assist in guiding the wind to allow the wind to enter the fan blade frame 17, and a rubber pad 10 is bonded to the bottom end of the filter tube 1, and the rubber pad 10 is in contact with the mounting tube 2, and the rubber pad 10 can protect the connection between the filter tube 1 and the mounting tube 2, and a joint 5 is fixed to the bottom end of the mounting tube 2 by bolts, and a reinforcing frame 13 is provided inside the flexible plate 4.

[0024] Working principle: When the device needs to be used, first fix the device inside the ventilation duct through the mounting plate 3 and the flexible plate 4, and make the multiple air inlets 7 without the filter 11 installed face the air outlet of the duct, and the wind enters the filter tube 1 through the air inlet 7, blowing the fan blade frame 17 to rotate, so that the connecting frame 15 drives the brush 18 to rotate, and then the brush 18 cleans the surface of the filter element 12 to avoid clogging of the filter element 12. When the dust at the air outlet is large, make the multiple air inlets 7 with the filter 11 installed face the air outlet of the duct, so that the wind is initially filtered through the filter 11 before entering the filter tube 1, so that the filtering effect of the device is more efficient.

[0025] Finally, it should be noted that: for those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this utility model shall be included in the protection scope of this utility model.

Claims

1. A gas detection device capable of preventing dust from entering, comprising a filter tube (1), characterized in that: The top inner wall of the filter tube (1) is fixedly connected to two guide plates (8), the top of the filter tube (1) is provided with a plurality of air inlets (7), wherein a filter screen (11) is provided inside the plurality of air inlets (7) on one side, the circumferential inner wall of the filter tube (1) is fixedly connected to a filter element (12), the inside of the filter tube (1) is movably connected to a swivel (14), the inside of the swivel (14) is fixedly connected to a fan blade frame (17), the bottom of the fan blade frame (17) is fixedly connected to a connecting frame (15), the bottom end of the connecting frame (15) is fixedly connected to a brush (18), and the brush (18) is in contact with the filter element (12), and a connecting component is provided at the bottom of the filter tube (1).

2. A gas detection device capable of preventing dust from entering according to claim 1, characterized in that: The connection assembly comprises a mounting tube (2), the mounting tube (2) being threadedly connected to the bottom of the filter tube (1), a clamping plate (6) being installed on the outer side of the mounting tube (2), both ends of the clamping plate (6) being movably connected to a mounting plate (3), and one side of the mounting plate (3) being fixedly connected to a flexible plate (4).

3. A gas detection device capable of preventing dust from entering according to claim 1, characterized in that: A fixing ring (9) is fixedly connected to the top outer wall of the filter element (12), and a brush (18) is located inside the fixing ring (9).

4. A gas detection device capable of preventing dust from entering according to claim 1, characterized in that: A retaining ring (16) is fixedly connected to the circumferential inner wall of the filter tube (1), and the retaining ring (16) is located above the fan blade frame (17).

5. A gas detection device capable of preventing dust from entering according to claim 1, characterized in that: A rubber pad (10) is fixedly connected to the bottom end of the filter tube (1), and the rubber pad (10) is in contact with the mounting tube (2).

6. A gas detection device capable of preventing dust from entering according to claim 2, characterized in that: The bottom end of the installation tube (2) is fixedly connected with a joint (5).

7. A gas detection device capable of preventing dust from entering according to claim 2, characterized in that: A reinforcing frame (13) is provided inside the flexible plate (4).

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