Waste gas detection device

Abstract

The utility model discloses a waste gas detection device which comprises a waste gas pipe, a shell fixedly penetrates through one side of the outer surface of the waste gas pipe, a shell is fixedly installed on one side of the outer surface of the shell, a driving assembly is installed in the shell, and the output end of the driving assembly penetrates through the shell and is fixedly connected with a sample shaft. The sample shaft is positioned on the inner sides of the shell and the waste gas pipe; a plurality of sample temporary storage holes penetrating to the other side are uniformly formed in one side of the outer surface of the sample shaft. According to the utility model, through the arrangement of the shell, the shell, the driving assembly, the sample shaft, the sample temporary storage hole, the auxiliary hole, the filter screen, the arc-shaped scraping plate and the online gas detector, the whole device adopts rotary sampling, and a sample enters the sample temporary storage hole and is stabilized for a certain time to be detected, so that the influence on a detection result caused by waste gas concentration fluctuation is avoided; and meanwhile, due to rotary detection, the device also has a continuous waste gas detection function.

Description

TECHNICAL FIELD

[0001] The utility model relates to exhaust gas detection technical field especially, relates to a kind of exhaust gas detection device. BACKGROUND

[0002] Exhaust gas detection refers to the process of detecting and analyzing the exhaust gas generated by enterprises, determining the emission concentration, discharge port position, and emission volume of exhaust gas, etc. Exhaust gas detection is an important part of modern environmental protection, which can help enterprises accurately understand their own exhaust gas emission situation, timely carry out exhaust gas treatment, and reduce the impact of exhaust gas on the environment and human health.

[0003] After industrial exhaust gas treatment, it needs to be detected, and the existing detection methods mainly have two kinds, which are online monitoring and sampling detection. Among them, the monitoring probe needs to be installed in the exhaust gas discharge pipeline for continuous detection of the passing exhaust gas, but due to the large fluctuation of exhaust gas concentration in the pipeline, the detection result will be affected, and false positives are easy to occur; while sampling detection can avoid false positives, but it is difficult to carry out continuous detection, therefore, a kind of exhaust gas detection device capable of preventing false positives and continuous detection is proposed. UTILITY MODEL CONTENT

[0004] The utility model discloses in order to solve the shortcoming in prior art, and propose a kind of exhaust gas detection device.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a kind of exhaust gas detection device, including exhaust pipe, the outer surface one side of the exhaust pipe is fixed and is penetrated with shell, the outer surface one side of the shell is fixedly installed with shell body, the shell body is installed with drive assembly, the output end of the drive assembly is arranged and fixedly connected with sample shaft with being penetrated shell body, and sample shaft is located the inner side of shell and exhaust pipe;

[0006] The outer surface one side of the sample shaft is evenly provided with a plurality of sample temporary storage holes penetrated to the other side, the inner wall of one side of a plurality of sample temporary storage holes is provided with auxiliary hole penetrated to the outside of sample shaft, the opening of both ends of a plurality of sample temporary storage holes and the opening of auxiliary hole are fixedly installed with filter screen;

[0007] The outer surface of the sample shaft is attached with arc-shaped scraper, and arc-shaped scraper is matched with filter screen.

[0008] The top of the shell is fixed and is penetrated with online gas detector, and online gas detector is matched with auxiliary hole.

[0009] Further, the driving assembly comprises a servo motor, the servo motor is fixedly installed in the interior of the shell, a large gear is fixedly connected to the driving end of the servo motor, a small gear is meshedly connected to the outer surface of the large gear, a rotating shaft is fixedly connected to the outer surface of the small gear, the rotating shaft extends through the inner wall of the shell to the interior of the shell and is rotatably connected with the shell, and the rotating shaft is fixedly connected with the sample shaft.

[0010] Further, bearings are jointly installed at the rotating connection part between the rotating shaft and the shell, the inner ring of the bearing is fixedly connected with the rotating shaft, and the outer ring of the bearing is fixedly connected with the shell, the bearing supports the rotating shaft and facilitates the installation of the rotating shaft.

[0011] Further, sealing pads are fixedly connected to the inner walls of three sides of the shell, and the sealing pads are sealingly attached to the outer wall of the sample shaft, thereby ensuring the sealing performance of the connection part between the sample shaft and the shell.

[0012] Further, a through hole penetrating through the top to the bottom is formed in the top of each of the sealing pads, and the through hole is matched with the online gas detector and the auxiliary hole, and the through hole facilitates the entry of the gas into the online gas detector.

[0013] Further, an installation plate is fixedly connected to the top side of the outer surface of the arc-shaped scraper, and the installation plate is fixedly connected with the exhaust pipe, and the installation plate facilitates the installation of the arc-shaped scraper.

[0014] The beneficial effects of the utility model are as follows:

[0015] In use, the exhaust gas detection device is of a rotary sampling type, the sample enters the sample temporary storage hole and is detected after being stably stored for a certain period of time, thereby avoiding the influence of the fluctuation of the exhaust gas concentration on the detection result, and the device also has the function of continuously detecting the exhaust gas due to the rotary detection. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the utility model, the following will briefly introduce the drawings needed in the description of the specific implementation mode, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to the drawings without creating any creative labor.

[0017] Figure 1 The utility model discloses a three-dimensional view;

[0018] Figure 2 The utility model discloses a sectional view;

[0019] Figure 3 : the shell section view of the utility model;

[0020] Figure 4 : the waste gas pipe section view of the utility model;

[0021] Figure 5 : the driving assembly structure schematic view of the utility model.

[0022] The signs are as follows:

[0023] 1, waste gas pipe; 2, shell; 3, online gas detector; 4, shell; 5, sample shaft; 6, rotating shaft; 7, pinion; 8, sample temporary storage hole; 9, gasket; 10, filter screen; 11, auxiliary hole; 12, mounting plate; 13, arc-shaped scraper; 14, servo motor; 15, gear wheel. DETAILED DESCRIPTION

[0024] 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, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] As shown in Figures 1 to 5 , it relates to a kind of waste gas detection device, including waste gas pipe 1, the outer surface one side of waste gas pipe 1 is fixed and has shell 2, the outer surface one side of shell 2 is fixedly installed with shell 4, driving assembly is installed in shell 4, the output end of driving assembly is arranged and fixedly connected with sample shaft 5 penetrating shell 4, and sample shaft 5 is located in the inner side of shell 2 and waste gas pipe 1, the inner wall of three sides of shell 2 is fixedly connected with gasket 9, and gasket 9 is sealed and attached with the outer wall of sample shaft 5, guarantee the sealing property between shell 2 and sample shaft 5, the top of middle single gasket 9 is provided with through hole penetrating to bottom, and through hole is matched with online gas detector 3 and auxiliary hole 11, it is favorable for waste gas to enter online gas detector 3, driving assembly includes servo motor 14, and servo motor 14 is fixedly installed in the inside of shell 4, the driving end of servo motor 14 is fixedly connected with gear wheel 15, the outer surface one side of gear wheel 15 is engagedly connected with pinion 7, the outer surface one side of pinion 7 is fixedly connected with rotating shaft 6, and rotating shaft 6 extends to the inside of shell 2 and is rotatably connected between shell 2 penetrating the inner wall of shell 4, and rotating shaft 6 is fixedly connected between sample shaft 5, rotating shaft 6 and shell 2 rotatably connected are jointly installed with bearing, and the inner ring of bearing is fixedly connected with rotating shaft 6, and the outer ring of bearing is fixedly connected between shell 2, bearing not only has the supporting effect to rotating shaft 6, while also reduce the rotating resistance of rotating shaft 6.

[0026] The outer surface of the sample shaft 5 is uniformly provided with a plurality of sample temporary storage holes 8 penetrating to the other side, the inner wall of one side of the plurality of sample temporary storage holes 8 is provided with an auxiliary hole 11 penetrating to the outside of the sample shaft 5, and the opening at both ends of the plurality of sample temporary storage holes 8 and the opening of the auxiliary hole 11 are fixedly installed with a filter screen 10. The setting of the filter screen 10 can avoid large particles impurities entering the sample temporary storage hole 8.

[0027] The outer surface of the sample shaft 5 is uniformly provided with an arc-shaped scraper 13, and the arc-shaped scraper 13 is matched with the filter screen 10. The effect of three filter screens 10 is beneficial to the unified cleaning of the arc-shaped scraper 13, avoiding the residual large particle impurities on the filter screen 10. The outer surface of the arc-shaped scraper 13 is fixedly connected with a mounting plate 12, and the mounting plate 12 is fixedly connected between the arc-shaped scraper 13 and the waste gas pipe 1. The mounting plate 12 and the waste gas pipe 1 are fixed by screws, which is beneficial to the disassembly and assembly of the mounting plate 12.

[0028] The top of the shell 2 is fixedly penetrated with an online gas detector 3, and the online gas detector 3 is matched with the auxiliary hole 11. The online gas detector 3 is a prior art, and its model and specification can be selected according to the actual detection gas. Its function should be selected to have a pump suction function, which is convenient for the waste gas to enter the online gas detector 3 for detection.

[0029] Working principle: After the waste gas enters the waste gas pipe 1, it will enter the sample temporary storage hole 8 inside the waste gas pipe 1. During detection, the servo motor 14 drives the large gear 15 to rotate, the large gear 15 drives the small gear 7 to rotate, and then the sample shaft 5 is driven to rotate through the rotating shaft 6. The sample shaft 5 will synchronously drive the plurality of sample temporary storage holes 8 to move when the sample shaft 5 rotates. When the sample temporary storage hole 8 enters the inner side of the arc-shaped scraper 13, the waste gas in the sample temporary storage hole 8 is basically in a non-flowing state. In this process, the arc-shaped scraper 13 cleans the surface of the passing filter screen 10. When the waste gas enters the inside of the shell 2 with the sample temporary storage hole 8, it is completely sealed. At this time, the waste gas concentration gradually tends to be average. When the waste gas moves through the through hole, it enters the online gas detector 3 through the auxiliary hole 11 and the through hole, and is detected by the online gas detector 3. When the sample temporary storage hole 8 moves into the waste gas pipe 1 again, the internal waste gas is replaced by new waste gas, thereby achieving the effect of continuous detection.

[0030] It should be noted that, in actual use, the online gas detector 3 and the servo motor 14 are electrically connected with the external control device, which is convenient for controlling the operation.

[0031] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific implementation. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. An exhaust gas detection device comprising an exhaust pipe (1), characterized in that: The outer surface of the exhaust pipe (1) is fixed with a shell (2), the outer surface of the shell (2) is fixedly installed with a shell (4), the shell (4) is installed with a driving assembly, the output end of the driving assembly is provided through the shell (4) and is fixedly connected with a sample shaft (5), and the sample shaft (5) is located on the inner side of the shell (2) and the exhaust pipe (1). The outer surface of the sample shaft (5) is uniformly provided with a plurality of sample temporary storage holes (8) penetrating to the other side, the inner wall of one side of the plurality of sample temporary storage holes (8) is provided with an auxiliary hole (11) penetrating to the outside of the sample shaft (5), and the opening of the two ends of the plurality of sample temporary storage holes (8) and the opening of the auxiliary hole (11) are fixedly installed with a filter screen (10). The outer surface of the sample shaft (5) is provided with an arc-shaped scraper (13), and the arc-shaped scraper (13) is matched with the filter screen (10). The top of the shell (2) is fixedly provided with an online gas detector (3), and the online gas detector (3) is matched with the auxiliary hole (11).

2. The exhaust gas detection device according to claim 1, characterized in that: The driving assembly comprises a servo motor (14), and the servo motor (14) is fixedly installed in the shell (4), the driving end of the servo motor (14) is fixedly connected with a large gear (15), the outer surface of the large gear (15) is meshingly connected with a small gear (7), the outer surface of the small gear (7) is fixedly connected with a rotating shaft (6), and the rotating shaft (6) extends through the inner wall of the shell (4) to the inside of the shell (2) and is rotatably connected with the shell (2), and the rotating shaft (6) is fixedly connected with the sample shaft (5).

3. The exhaust gas detection device according to claim 2, characterized in that: The rotating shaft (6) and the shell (2) are rotatably connected with a bearing, the inner ring of the bearing is fixedly connected with the rotating shaft (6), and the outer ring of the bearing is fixedly connected with the shell (2).

4. The exhaust gas detection device of claim 1, wherein: The inner wall of three sides of the shell (2) is fixedly connected with a sealing gasket (9), and the sealing gasket (9) is sealingly attached to the outer wall of the sample shaft (5).

5. An exhaust gas detection device according to claim 4, characterised in that: The top of the sealing gasket (9) is provided with a through hole penetrating to the bottom, and the through hole is matched with the online gas detector (3) and the auxiliary hole (11).

6. The exhaust gas detection device of claim 1, wherein: The outer surface of the arc-shaped scraper (13) is fixedly connected with a mounting plate (12), and the mounting plate (12) is fixedly connected between the arc-shaped scraper (13) and the exhaust pipe (1).

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