An optical detection device for exhaust gas from non-road mobile machinery

Abstract

This invention discloses an optical detection device for exhaust gas from non-road mobile machinery, comprising a pipe body, a light-transmitting section, an infrared light source, an infrared receiver, a scraper, and a driving mechanism. The pipe body has a light-transmitting section, and the infrared light source and infrared receiver are located at the front and rear ends of the light-transmitting section, respectively. The pipe body has a scraper, and the pipe body has a driving mechanism that drives the scraper to move up and down. The scraper moves up and down under the drive mechanism to scrape out the particulate matter adsorbed on the inner wall of the light-transmitting section. Compared with the prior art, it is convenient to use and improves work efficiency.

Description

[Technical Field]

[0001] This invention relates to the technical field of exhaust gas detection, and in particular to the technical field of an optical detection device for exhaust gas from non-road mobile machinery. [Background Technology]

[0002] Exhaust emission testing refers to the detection of harmful gases emitted from vehicle exhaust, such as carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter, and soot. These pollutants pose a serious threat to human health. Mobile sources include motor vehicles and non-road mobile machinery, with non-road mobile machinery mainly including construction machinery, agricultural machinery, and small general-purpose machinery. In recent years, with industrial transformation and upgrading, and increased efforts to control pollution from coal combustion and motor vehicles, emissions from non-road mobile machinery have become increasingly prominent. Nationwide, the emissions of nitrogen oxides (NOx) and particulate matter (PM) from non-road mobile machinery are now comparable to those from motor vehicles.

[0003] Chinese invention patent application number CN200820142250.9 describes an optical sensor for motor vehicle exhaust gas. When automobile exhaust gas passes through an independent gas chamber duct, the infrared sensor signal passes through a measurement and control system, and is then subjected to digital filtering, linear interpolation, and temperature compensation. A nonlinear correction algorithm is used to obtain the concentration of the measured gas. However, because particulate matter in the measured airflow will deposit on the independent gas chamber duct, the infrared light will be affected, changing the intensity of the transmitted light. This device has a small measuring chamber volume, is easy to disassemble and clean, and requires disassembly and cleaning, making it inconvenient to use and inefficient. [Summary of the Invention]

[0004] The purpose of this invention is to solve the problems in the prior art and to propose an optical detection device for exhaust gas from non-road mobile machinery, which is easy to use and improves work efficiency.

[0005] To achieve the above objectives, the present invention proposes an optical detection device for exhaust gas from non-road mobile machinery, comprising a pipe body, a light-transmitting section, an infrared light source, an infrared receiver, a scraper, and a driving mechanism. The pipe body is provided with a light-transmitting section, and the infrared light source and infrared receiver are respectively located at the front and rear ends of the light-transmitting section. The pipe body is provided with a scraper, and the pipe body is provided with a driving mechanism for driving the scraper to move up and down. The scraper moves up and down under the drive of the driving mechanism to scrape out the particulate matter adsorbed on the inner wall of the light-transmitting section.

[0006] Preferably, the scraper includes an annular body and an annular scraper blade disposed on the outer peripheral surface of the annular body.

[0007] Preferably, the drive mechanism includes a rotary motor, several slide rods, a support, several springs, a connecting arm, a rotating arm, and a crossbeam. The support is provided with a slidable slide rod, and the upper end of the slide rod is provided with a crossbeam. Springs are sleeved on the slide rods between the support and the scraper. The drive end of the rotary motor extends into the tube and is provided with a rotating arm. The free end of the rotating arm is movably connected to the crossbeam through the connecting arm.

[0008] Preferably, the device also includes a cleaning apparatus, which includes a water pump, a cleaning fluid storage bottle, an annular spray pipe, and several nozzles. The cleaning fluid storage bottle is provided on the pipe body, and the water pump is connected to the cleaning fluid storage bottle. The output end of the water pump is connected to the annular spray pipe provided on the scraper body, and the annular spray pipe is provided with uniformly distributed nozzles.

[0009] Preferably, the input end of the tube body is connected to the connecting mechanism via a connecting pipe. The connecting mechanism includes a telescopic rod, a pipe joint, and a sealing mechanism. The telescopic rod is provided with a pipe joint, and the rear end of the pipe joint is provided with a sealing mechanism. The sealing mechanism includes an annular seat, a flaring mechanism, and a sealing assembly. The rear end of the annular seat is provided with a sealing assembly, and the annular seat is provided with a flaring mechanism for expanding the sealing assembly.

[0010] Preferably, the sealing assembly includes a flexible sealing tube and an annular elastomer disposed at the rear end of the flexible sealing tube.

[0011] Preferably, the flaring mechanism includes an annular flaring body, a scraper sleeve, and a pulling mechanism. The rear end of the pulling mechanism is provided with the annular flaring body, and the scraper sleeve is sleeved on the annular flaring body and its front end is fixedly connected to the annular seat.

[0012] Preferably, the pulling mechanism includes two sliding shafts, several springs, several cams, several arms, and a pull rope. The two sliding shafts are mounted on an annular seat and have an annular flared body at their rear ends. Springs are fitted on the sliding shafts between the annular seat and the annular flared body. Rotatable cams are provided at the front ends of the sliding shafts. Arms are provided on the cams. The two ends of the pull rope are fixedly connected to the free ends of the two arms, respectively.

[0013] Preferably, the telescopic rod includes a sleeve and a rod body disposed within the sleeve, and the sleeve and the rod body are fixedly connected by a hand-tightened bolt.

[0014] The beneficial effects of the present invention are as follows: The present invention provides a scraper inside the tube and a driving mechanism on the tube to drive the scraper to move up and down. The scraper moves up and down under the drive mechanism to scrape out the particles adsorbed on the inner wall of the light-transmitting section. Compared with the prior art, the present invention is more convenient to use and improves work efficiency.

[0015] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0016] Figure 1 This is a schematic diagram of the structure of an optical detection device for exhaust gas from non-road mobile machinery according to the present invention.

[0017] In the diagram: 1-pipe body, 2-light-transmitting section, 3-infrared light source, 4-infrared receiver, 5-scraper body, 6-drive mechanism, 7-cleaning device, 8-connecting pipe, 9-connecting mechanism, 51-ring-shaped body, 52-ring-shaped scraper, 61-rotary motor, 62-slide rod, 63-support, 64-spring, 65-connecting arm, 66-rotating arm, 67-crossbeam, 71-water pump, 72-cleaning fluid storage bottle, 73-ring-shaped nozzle, 74-nozzle, 91-telescopic rod. 92-Pipe fitting, 93-Sealing mechanism, 911-Sleeve, 912-Rod, 913-Hand-tightening bolt, 931-Annular seat, 932-Flanging mechanism, 933-Sealing assembly, 9331-Flexible sealing tube, 9332-Annular elastomer, 9321-Annular flared body, 9322-Scraper sleeve, 9323-Pull mechanism, 93231-Sliding shaft, 93232-Spring, 93233-Cam, 93234-Arm body, 93235-Pull rope.

Detailed Implementation Methods

[0018] See Figure 1This invention discloses an optical detection device for exhaust emissions from non-road mobile machinery, comprising a pipe body 1, a light-transmitting section 2, an infrared light source 3, an infrared receiver 4, a scraper 5, and a driving mechanism 6. The pipe body 1 has a light-transmitting section 2, with the infrared light source 3 and infrared receiver 4 located at the front and rear ends of the light-transmitting section 2, respectively. The pipe body 1 contains a scraper 5, and the pipe body 1 is equipped with a driving mechanism 6 that drives the scraper 5 to move up and down. Driven by the driving mechanism 6, the scraper 5 moves up and down to scrape off particles adsorbed on the inner wall of the light-transmitting section 2. The scraper 5 includes an annular body 51 and an annular scraper blade 52 disposed on the outer circumference of the annular body 51. The driving mechanism 6 includes a rotary motor 61, several sliding rods 62, a support 63, several springs 64, a connecting arm 65, and a rotating arm. 66 and crossbeam 67, the support 63 is provided with a sliding rod 62, the upper end of the sliding rod 62 is provided with a crossbeam 67, and spring bodies 64 are sleeved on the sliding rod 62 between the support 63 and the scraper body 5. The drive end of the rotary motor 61 extends into the tube body 1 and is provided with a rotating arm 66. The free end of the rotating arm 66 is movably connected to the crossbeam 67 through a connecting arm 65. It also includes a cleaning device 7, the cleaning device 7 including a water pump 71, a cleaning fluid storage bottle 72, an annular spray pipe 73 and several nozzles 74. The tube body 1 is provided with a cleaning fluid storage bottle 72, and the cleaning fluid storage bottle 72 is provided with a water pump 71 connected to it. The output end of the water pump 71 is connected to the annular spray pipe 73 provided on the scraper body 5. The annular spray pipe 73 is provided with The device has evenly distributed nozzles 74. The input end of the pipe body 1 is connected to the connecting mechanism 9 via a connecting pipe 8. The connecting mechanism 9 includes a telescopic rod 91, a pipe connector 92, and a sealing mechanism 93. The telescopic rod 91 is provided with the pipe connector 92, and the rear end of the pipe connector 92 is provided with the sealing mechanism 93. The sealing mechanism 93 includes an annular seat 931, a flaring mechanism 932, and a sealing assembly 933. The rear end of the annular seat 931 is provided with the sealing assembly 933. The annular seat 931 is provided with a flaring mechanism 932 for expanding the sealing assembly 933. The sealing assembly 933 includes a flexible sealing tube 9331 and an annular elastic body 9332 located at the rear end of the flexible sealing tube 9331. The flaring mechanism 932 includes an annular flaring body 932. 1. A scraper sleeve 9322 and a pulling mechanism 9323. The pulling mechanism 9323 has an annular flared body 9321 at its rear end. The scraper sleeve 9322 is sleeved on the annular flared body 9321 and its front end is fixedly connected to an annular seat 931. The pulling mechanism 9323 includes two sliding shafts 93231, several springs 93232, several cams 93233, several arms 93234, and a pull rope 93235. The two sliding shafts 93231 pass through the annular seat 931 and have an annular flared body 9321 at their rear ends. Springs 93232 are sleeved on the sliding shafts 93231 between the annular seat 931 and the annular flared body 9321. Each sliding shaft 93231 has a rotatable cam 93233 at its front end.Each cam 93233 is equipped with an arm 93234. The two ends of the pull rope 93235 are fixedly connected to the free ends of the two arms 93234 respectively. The telescopic rod 91 includes a sleeve 911 and a rod 912 disposed within the sleeve 911. The sleeve 911 and the rod 912 are fixedly connected by a hand-tightened bolt 913.

[0019] Working process of this invention:

[0020] In the operation of this invention, an optical detection device for exhaust of non-road mobile machinery, when the light-transmitting section 2 needs cleaning, activates a rotary motor 61 and a water pump 71. The rotary motor 61 drives a rotating arm 66 to rotate, and the rotating arm 66, through a connecting arm 65, drives a crossbeam 67 to reciprocate up and down. The crossbeam 67, through a sliding rod 62, drives a scraper 5 to move, scraping off particles adhering to the inner wall of the light-transmitting section 2. The water pump 71 pumps cleaning fluid from a storage bottle 72 into an annular nozzle 73, and finally sprays it from a nozzle 74 onto the inner wall of the light-transmitting section 2, further improving the cleaning effect and efficiency. A spring 64 exerts a downward force on the scraper 5, improving the smoothness of the downward movement of the scraper 5.

[0021] When connecting mechanism 9 is connected to the exhaust pipe, the annular elastic body 9332 is fitted onto the annular flared body 9321, the hand-tightening bolt 913 is loosened, and the extension length of the rod 912 is adjusted as needed. Then, the hand-tightening bolt 913 is tightened. Then, the annular flared body 9321 is manually fitted onto the output end of the exhaust pipe via the telescopic rod 91. The pull rope 93235 is then pulled downwards, causing the arm 93234 to rotate the cam 93233. Simultaneously, the rotation of the cam 93233 pulls the sliding shaft 93231 forward, which in turn moves the annular flared body 9321 forward. As the annular flared body 9321 enters the scraper sleeve 9322, the scraper sleeve 9322 removes the annular elastic body 9332 from the annular flared body 9321, causing the annular elastic body 9332 to retract and fix itself onto the exhaust pipe. This eliminates the need for manual climbing onto the machinery, improving safety and ease of use.

[0022] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. An optical detection device for exhaust emissions from non-road mobile machinery, characterized in that: The device includes a tube (1), a light-transmitting section (2), an infrared light source (3), an infrared receiver (4), a scraper (5), and a driving mechanism (6). The tube (1) has a light-transmitting section (2). The infrared light source (3) and the infrared receiver (4) are located at the front and rear ends of the light-transmitting section (2), respectively. The tube (1) contains a scraper (5). The tube (1) has a driving mechanism (6) that drives the scraper (5) to move up and down. The scraper (5) moves up and down under the drive of the driving mechanism (6) to scrape out the particles adsorbed on the inner wall of the light-transmitting section (2). The input end of the tube (1) is connected to the connecting mechanism (9) through a connecting pipe (8). The connecting mechanism (9) includes... The device includes a telescopic rod (91), a pipe connector (92), and a sealing mechanism (93). The telescopic rod (91) is provided with a pipe connector (92), and the rear end of the pipe connector (92) is provided with a sealing mechanism (93). The sealing mechanism (93) includes an annular seat (931), a flaring mechanism (932), and a sealing assembly (933). The rear end of the annular seat (931) is provided with a sealing assembly (933), and the annular seat (931) is provided with a flaring mechanism (932) for expanding the sealing assembly (933). The sealing assembly (933) includes a flexible sealing tube (9331) and an annular elastomer (9332) located at the rear end of the flexible sealing tube (9331). The flaring mechanism (932) includes an annular flaring body (9321), a scraper sleeve (9322), and a pulling mechanism (9323). The rear end of the pulling mechanism (9323) is provided with the annular flaring body (9321). The scraper sleeve (9322) is sleeved on the annular flaring body (9321) and its front end is fixedly connected to the annular seat (931). The pulling mechanism (9323) includes two sliding shafts (93231), several springs (93232), several cams (93233), several arms (93234), and a pull rope (93235). The two sliding shafts (93231) pass through the annular seat (931) and have an annular flaring at their rear ends. The body (9321) is equipped with a spring (93232) on the sliding shaft (93231) between the annular seat (931) and the annular flared body (9321). The front end of the sliding shaft (93231) is equipped with a rotatable cam (93233). The cam (93233) is equipped with an arm body (93234). The two ends of the pull rope (93235) are respectively fixedly connected to the free ends of the two arms body (93234). The telescopic rod (91) includes a sleeve (911) and a rod body (912) provided in the sleeve (911). The sleeve (911) and the rod body (912) are fixedly connected by a hand-tightening bolt (913).

2. The optical detection device for exhaust gas from non-road mobile machinery as described in claim 1, characterized in that: The scraper (5) includes an annular body (51) and an annular scraper blade (52) disposed on the outer peripheral surface of the annular body (51).

3. The optical detection device for exhaust gas from non-road mobile machinery as described in claim 1, characterized in that: The drive mechanism (6) includes a rotary motor (61), several slide rods (62), a support (63), several springs (64), a connecting arm (65), a rotating arm (66), and a crossbeam (67). The support (63) is provided with a slide rod (62), and the upper end of the slide rod (62) is provided with a crossbeam (67). Springs (64) are sleeved on the slide rods (62) between the support (63) and the scraper (5). The drive end of the rotary motor (61) extends into the tube (1) and is provided with a rotating arm (66). The free end of the rotating arm (66) is movably connected to the crossbeam (67) through the connecting arm (65).

4. The optical detection device for exhaust gas from non-road mobile machinery as described in claim 1, characterized in that: It also includes a cleaning device (7), which includes a water pump (71), a cleaning fluid storage bottle (72), an annular nozzle (73) and several nozzles (74). The pipe body (1) is provided with a cleaning fluid storage bottle (72), and the cleaning fluid storage bottle (72) is provided with a water pump (71) connected to it. The output end of the water pump (71) is connected to the annular nozzle (73) provided on the scraper body (5), and the annular nozzle (73) is provided with uniformly distributed nozzles (74).

Images