An on-line monitoring system for smoke density with light source self-diagnosis function

Abstract

The present application relates to the technical field of light source self-diagnosis, and particularly relates to a smoke dust concentration online monitoring system with light source self-diagnosis function, which comprises a photoelectric sensor two, an arc-shaped baffle and a rotating mechanism, the arc-shaped baffle protects the photoelectric sensor two before the arc-shaped baffle rotates. After the arc-shaped baffle rotates, if the light source is not damaged, the photoelectric sensor two can detect the light source, which represents that the reason why the photoelectric sensor one cannot detect the light is that the smoke dust concentration is low or the air hole is blocked. The two displacement plates are closed, and the smoke dust enters. If the photoelectric sensor one still cannot detect the light, the two displacement plates are rotated to the open state, and the cleaning mechanism is used to clean the semicircular hole on the displacement plate. If the photoelectric sensor one still cannot detect the light when the displacement plate is closed, it represents that the smoke dust concentration is low. If the photoelectric sensor one can detect the light, it represents that the air hole is blocked.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of light source self-diagnosis technology, and particularly relates to a smoke dust concentration online monitoring system with light source self-diagnosis function. BACKGROUND

[0002] In the smoke dust concentration continuous monitoring system, a double-emitter and single-receiver is a common forward scattering principle monitoring method; the double-emitter includes two independent light emitting paths, one of which is used as a measurement light path, and the other is used as a calibration light path.

[0003] Chinese patent: a smoke dust particle concentration monitor, application number: 201621283473.8, the device is sold and used in the market. But in the process of using, because the light source of the measurement light path cannot detect the diffuse reflection light scattered by the smoke when the light source is horizontally irradiated, or the light source is damaged, or the air hole is blocked, the photoelectric sensor one (the photoelectric sensor one in the attached drawings of the comparative document is marked as 24, and the light is introduced into the photoelectric sensor one through the signal optical fiber) cannot detect the diffuse reflection light scattered by the smoke when the light source is in contact with the smoke. These will cause the worker to be unable to judge remotely, and the engineer needs to go to the scene to open and watch, which is time-consuming. Therefore, a smoke dust concentration online monitoring system with light source self-diagnosis function is needed, which can automatically judge whether the photoelectric sensor one cannot receive the light source due to the influence of smoke concentration, the influence of light source damage, and the blockage of the air hole. SUMMARY

[0004] In view of the above technical deficiencies, the purpose of the present application is to provide a smoke dust concentration online monitoring system with light source self-diagnosis function, which can automatically judge whether the photoelectric sensor one cannot receive the light source due to the influence of smoke concentration, the influence of light source damage, and the blockage of the air hole.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: the present application provides a smoke dust concentration online monitoring system with light source self-diagnosis function, which comprises a photoelectric sensor two, an arc-shaped baffle and a rotating mechanism, the arc-shaped baffle is located in a uniform heating chamber, the arc-shaped baffle is fixedly installed on a rotating disc of the rotating mechanism, a light hole for laser to pass through is formed on a connecting block, and a detection end of the photoelectric sensor two faces the light hole; when the rotating disc is not rotated, the arc-shaped baffle covers the light hole.

[0006] Preferably, the tail part of the uniform heating chamber is in a spherical surface structure, the outer edge of the arc-shaped baffle is attached to the tail part of the uniform heating chamber, the gas inlet pipe and the light hole are both communicated with the spherical surface region of the uniform heating chamber, the outer edge of the arc-shaped baffle covers the light hole when the arc-shaped baffle is not rotated, and the outer edge of the arc-shaped baffle covers the end part of the gas inlet pipe when the arc-shaped baffle is rotated.

[0007] Preferably, the external pushing mechanism and two displacement plates are further included, the two displacement plates are each provided with a semicircular hole, the two semicircular holes form an air hole, the air hole is communicated between the glass tube and the uniform heating chamber, a clamping guide block is fixedly arranged between the glass tube and the connecting block, the displacement plates are horizontally slidably installed in the clamping guide block, and the external pushing mechanism is used for pushing the two displacement plates to move close to or away from each other.

[0008] Preferably, the external pushing mechanism includes a linear pushing mechanism, a triangular block, four guide columns and two transmission columns, one end of each two guide columns is fixedly connected with a displacement plate, the guide columns are slidably connected with the clamping guide block, the clamping guide block is provided with a square sliding hole for sliding of the two displacement plates, a plurality of springs are arranged in the clamping guide block and used for pushing the two displacement plates inward, the transmission columns are fixedly installed on the top of the displacement plates, the transmission columns pass through the top of the clamping guide block and are in contact with the inclined surface of the triangular block, and the triangular block is fixedly installed on the pushing column of the linear pushing mechanism.

[0009] Preferably, the cleaning mechanism is used for cleaning the air hole, the cleaning mechanism includes a horizontal pushing mechanism, two arc-shaped insertion plates and a connecting frame, when the displacement plates are in the final position after being separated, the arc-shaped insertion plates are coaxially arranged with the semicircular holes on the displacement plates, the outer diameter of the arc-shaped insertion plates is the same as the inner diameter of the air hole, the two arc-shaped insertion plates are fixedly installed on the connecting frame, and the horizontal pushing mechanism is used for pushing the arc-shaped insertion plates to move towards the air hole.

[0010] Preferably, the horizontal pushing mechanism includes a sliding column, a push plate and an electric push rod, the arc-shaped insertion plates are slidably installed on the connecting block, the connecting block is provided with an arc-shaped sliding groove for sliding of the arc-shaped insertion plates, the sliding column is fixedly installed on the connecting frame, the sliding column is inserted into the inclined slot of the push plate, the electric push rod is fixedly installed on the connecting block, the output end of the electric push rod is fixedly connected with the push plate, and the connecting block is provided with a vertical guide slot for vertical sliding of the push plate.

[0011] Preferably, a clamping plate is further included, the positioning plate is fixedly installed on the outer edge of the pushing column, the clamping plate is fixedly installed on the inner side of the push plate, the end of the clamping plate close to the positioning plate is provided with a triangular groove, a strip-shaped groove extending outward is arranged at the sharp corner of the triangular groove, and when the end of the positioning plate is clamped into the end of the strip-shaped groove, the end of the arc-shaped insertion plate is flush with the end of the displacement plate.

[0012] Preferably, the linear pushing mechanism further includes a cam and a spring, the cam is fixedly installed on the rotating disc, the end of the pushing column is in contact with the cam, the pushing column is horizontally slidably installed on the connecting block through a guide seat, and the spring is used for applying an elastic force close to the cam to the pushing column.

[0013] Preferably, the rotating mechanism further comprises a rotating column and a rotating motor, the rotating motor is fixedly installed on the connecting block through a motor bracket, one end of the rotating column is fixedly connected with the rotating disc, the other end of the rotating column is fixedly connected with an output end of the rotating motor, and the cam is fixedly installed on the rotating column.

[0014] Preferably, the inner edge of the arc-shaped baffle is in a slope structure, when the arc-shaped baffle is not rotated, the laser is opposite to the inner edge slope of the arc-shaped baffle, and the arc-shaped baffle is provided with a light guide hole penetrating through the arc-shaped baffle, when the arc-shaped baffle is rotated, the light guide hole is coaxially arranged with the light hole.

[0015] The present application has the advantages that:

[0016] 1. Before the arc-shaped baffle is rotated, the arc-shaped baffle protects the photoelectric sensor two. After the arc-shaped baffle is rotated, if the light source is not damaged, the photoelectric sensor two can detect the light source, which represents that the reason why the photoelectric sensor one cannot detect the light is that the smoke density is low or the air hole is blocked.

[0017] 2. The two displacement plates are closed, the smoke enters, if the photoelectric sensor one still cannot detect the light, at this time, the two displacement plates are rotated to the open state, and the cleaning mechanism cleans the semicircular hole on the displacement plate. If the photoelectric sensor one still cannot detect the light after the displacement plate is closed, at this time, it represents that the smoke density is low. If the light can be detected, it represents that the air hole is blocked.

[0018] 3. In the process of cleaning the semicircular hole by the cleaning mechanism, the displacement plate can be automatically positioned by the linear pushing mechanism, so that the arc-shaped plug can be inserted.

[0019] 4. The external pushing mechanism pushes the two displacement plates close to or away from each other, so as to avoid the influence of the dust falling between the two displacement plates on clamping the two displacement plates.

[0020] 5. The opening and closing of the displacement plate and the closing and opening of the air inlet pipe of the arc-shaped baffle are carried out at the same time, which improves the continuity of the equipment and avoids increasing other failure reasons. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a side view of the present application.

[0023] Figure 2 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application.

[0024] Figure 3 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application. Figure 1 sectional view along the line A-A.

[0025] Figure 4 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application.

[0026] Figure 5 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application.

[0027] Figure 6 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application.

[0028] Figure 7 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application.

[0029] Figure 8 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application.

[0030] Figure 9 isometric view of the exploded schematic diagram of the stereoscopic structure of the present application.

[0031] BRIEF DESCRIPTION OF DRAWINGS 1. Glass tube; 2. Connecting block; 2a. Soaking chamber; 2b. Light hole; 3. Air inlet pipe; 4. Photoelectric sensor two; 5. Arc-shaped baffle; 5a. Light guide hole; 6. Rotating mechanism; 6a. Rotating disc; 6b. Rotating column; 7. Outer pushing mechanism; 7a. Linear pushing mechanism; 7a1. Pushing column; 7a2. Positioning plate; 7a3. Cam; 7a4. Guide seat; 7a5. Spring two; 7b. Guide column; 7c. Spring one; 7d. Transmission column; 7e. Triangular block; 8. Displacement plate; 8a. Vent hole; 9. Clamping guide block; 10. Cleaning mechanism; 10a. Arc-shaped insertion plate; 10b. Connecting frame; 10c. Slide column; 10d. Pushing plate; 10d1. Inclined groove; 10e. Electric pushing rod; 10h. Clamping plate; 10f. Strip-shaped groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0033] Embodiment: The present application provides a smoke dust concentration online monitoring system with light source self-diagnosis function, as shown in the accompanying drawings. Figures 1-9As shown, including photoelectric sensor two 4, arc baffle 5 and rotating mechanism 6, the measuring light path laser emitted by the light source will pass through the glass tube 1 into the rotating mechanism 6, and the laser will be irradiated on the arc baffle 5, and if the light source is damaged, the rotating mechanism 6 needs to drive the arc baffle 5 to rotate, the arc baffle 5 is located in the heat soaking chamber 2a, and the arc baffle 5 is fixedly installed on the rotating disc 6a of the rotating mechanism 6. When the photoelectric sensor one cannot detect the diffuse reflection of light, the rotating disc 6a drives the arc baffle 5 to rotate, so that the laser can be irradiated on the photoelectric sensor two 4. The connecting block 2 is provided with a light hole 2b for the laser to pass through, and the detection end of the photoelectric sensor two 4 is opposite to the light hole 2b. When the rotating disc 6a is not rotated, the arc baffle 5 covers the light hole 2b, and the arc baffle 5 is closed, so that the gas cannot pass through the light hole 2b into the photoelectric sensor two 4, and the safety of the photoelectric sensor two 4 is ensured.

[0034] If the light source is damaged when checking whether the light source is damaged, if the gas inlet pipe 3 is still introducing flue gas into the inside, it will cause part of the flue gas to enter the photoelectric sensor two 4, which is still easy to cause the photoelectric sensor two 4 to be damaged. Therefore, as shown, Figure 3 As shown, the tail of the heat soaking chamber 2a is a spherical surface structure, the outer edge of the arc baffle 5 is attached to the tail of the heat soaking chamber 2a, the gas inlet pipe 3 and the light hole 2b are communicated with the spherical surface region of the heat soaking chamber 2a. When the arc baffle 5 is rotated, the outer edge of the arc baffle 5 covers the light hole 2b, and when the arc baffle 5 is rotated, the outer edge of the arc baffle 5 covers the end of the gas inlet pipe 3. This can ensure that the flue gas cannot enter the inside of the rotating mechanism 6 during detection, and reduce the probability of damage to the photoelectric sensor two 4.

[0035] In the prior art, the air flow channel between the glass tube 1 and the rotating disc 6a is small, which may be blocked in a poor field working environment, and at this time, the light source cannot effectively irradiate the photoelectric sensor 4, so workers still need to check the equipment, and the small air flow channel is also difficult to clean. Therefore, the outer pushing mechanism 7 and two displacement plates 8 are included, the two displacement plates 8 are each provided with a semicircular hole, the two semicircular holes form an air hole 8a, the air hole 8a is connected between the glass tube 1 and the uniform heating chamber 2a, the glass tube 1 is fixedly arranged with a clamping guide block 9 between the connecting block 2, the displacement plate 8 is horizontally slidably installed in the clamping guide block 9, and the outer pushing mechanism 7 is used to push the two displacement plates 8 to move close to or away from each other. When the light hole 2b is opened, if the laser cannot still be detected, the outer pushing mechanism 7 needs to push the displacement plates 8 to the two sides, the two displacement plates 8 will move away from each other, and the originally blocked air hole 8a is expanded, a gap is formed in the middle, and the laser can pass through. If the photoelectric sensor 4 still cannot sense the laser signal after the outer pushing mechanism 7 is opened, it means that the laser source is damaged, and if the photoelectric sensor 4 can sense the laser signal, it means that the air hole 8a is blocked.

[0036] If the rigid connection pulling mode is used, if dust is clamped between the two displacement plates 8, the displacement plates 8 will be excessively pulled, and long-term damage will occur. Therefore, the outer pushing mechanism 7 includes a linear pushing mechanism 7a, a triangular block 7e, four guide columns 7b and two transmission columns 7d. One end of each two guide columns 7b is fixedly connected with a displacement plate 8, the guide column 7b is slidably connected with the clamping guide block 9, the clamping guide block 9 is provided with a square sliding hole for sliding of the two displacement plates 8, the clamping guide block 9 is provided with a plurality of springs 7c for pushing the two displacement plates 8 inward, the transmission column 7d is fixedly installed at the top of the displacement plate 8, the transmission column 7d penetrates the top of the clamping guide block 9 and is in contact with the inclined surface of the triangular block 7e, and the triangular block 7e is fixedly installed on the pushing column 7a1 of the linear pushing mechanism 7a. The pushing column 7a1 is horizontally pushed by the linear pushing mechanism 7a to horizontally push the triangular block 7e, so that the triangular block 7e pushes the transmission column 7d to the two sides, so that the two displacement plates 8 are separated to the two sides. The laser can pass through the air hole 8a, and when the triangular block 7e is pulled back, the two displacement plates 8 are pushed to the center by the springs 7c. If dust is clamped between the two displacement plates 8, a gap is left between the two displacement plates 8, which is small and will not affect the normal use. The two displacement plates 8 are close to each other in a flexible manner, and the two displacement plates 8 will not be excessively pulled.

[0037] Due to the adhesion of solidified dust on the vent hole 8a, the vent hole 8a will be blocked for a long time, even if the displacement plate 8 can fall off part of the dust at the beginning of the separation, but when it is closed, new dust will immediately block the gap, therefore, a cleaning mechanism 10 is also included, which is used to clean the vent hole 8a, the cleaning mechanism 10 includes a horizontal pushing mechanism, two arc-shaped insertion plates 10a and a connecting frame 10b, when the displacement plate 8 is in the final position after separation, the arc-shaped insertion plate 10a is coaxially arranged with the semicircular hole on the displacement plate 8, and the outer diameter of the arc-shaped insertion plate 10a is the same as the inner diameter of the vent hole 8a, the two arc-shaped insertion plates 10a are fixedly installed on the connecting frame 10b, and the horizontal pushing mechanism is used to push the arc-shaped insertion plate 10a towards the vent hole 8a. By pushing the connecting frame 10b through the horizontal pushing mechanism, the connecting frame 10b drives the arc-shaped insertion plate 10a to move towards the vent hole 8a, so that the end of the arc-shaped insertion plate 10a can scrape the inner surface of the vent hole 8a clean.

[0038] Due to the narrow space in the uniform heating chamber 2a, it is not conducive to design a horizontally controlled pushing mechanism, therefore, the horizontal pushing mechanism includes a slide column 10c, a push plate 10d and an electric push rod 10e, the arc-shaped insertion plate 10a is slidably installed on the connecting block 2, and the connecting block 2 is provided with an arc-shaped sliding groove for the arc-shaped insertion plate 10a to slide, through the symmetrically arranged arc-shaped sliding grooves, the two arc-shaped insertion plates 10a can horizontally slide. The slide column 10c is fixedly installed on the connecting frame 10b, the slide column 10c is inserted into the inclined slot 10d1 of the push plate 10d, the electric push rod 10e is fixedly installed on the connecting block 2, the output end of the electric push rod 10e is fixedly connected with the push plate 10d, and the connecting block 2 is provided with a vertical guide groove for the vertical sliding of the push plate 10d. When the two displacement plates 8 are in the open state as shown in the figure, the push plate 10d is pushed to move by the electric push rod 10e, the push plate 10d pushes the slide column 10c, so that the slide column 10c slides along the inclined slot 10d1, that is, the arc-shaped insertion plate 10a is pushed into the semicircular hole of the displacement plate 8 through the slide column 10c, so that it can be cleaned. This pushing method, the main structure is outside the connecting block 2, does not need to design a horizontally controlled pushing mechanism, and meets the use of narrow space. Figure 7

[0039] ​In order to ensure the accuracy of the displacement plate 8 after movement, avoid the arc-shaped plug-in plate 10a unable to be inserted into the semicircular hole, it is necessary to position adjustment after the linear pushing mechanism 7a pushes, therefore, it also includes the clamping plate 10h, the positioning plate 7a2 is fixedly installed on the outer edge of the push column 7a1, the clamping plate 10h is fixedly installed on the inner side of the push plate 10d, the end of the clamping plate 10h close to the positioning plate 7a2 is provided with a triangular groove, the sharp corner of the triangular groove is provided with an outwardly extending strip-shaped groove 10f, when the end of the positioning plate 7a2 is clamped into the end of the strip-shaped groove 10f, the end of the arc-shaped plug-in plate 10a is flush with the end of the displacement plate 8, that is, before the arc-shaped plug-in plate 10a is pushed to clean the displacement plate 8, the positioning plate 7a2 is first centrally positioned through the guidance between the triangular groove and the positioning plate 7a2, that is, the position of the push column 7a1 is adjusted, and the position of the push column 7a1 relates to the movement position of the displacement plate 8, that is, the position adjustment of the displacement plate 8 is realized, so that after the displacement plate 8 is positioned, the arc-shaped plug-in plate 10a can be accurately inserted into the semicircular hole of the displacement plate 8 when the arc-shaped plug-in plate 10a is pushed to move after the end of the arc-shaped plug-in plate 10a is flush with the end of the displacement plate 8, and collision is avoided.

[0040] In order to enable the linear pushing mechanism 7a to satisfy the accurate positioning of the displacement plate 8 during cleaning, and enable the two displacement plates 8 to be opened simultaneously when the arc-shaped baffle 5 is rotated to cover the air inlet pipe 3, therefore, the linear pushing mechanism 7a further includes a cam 7a3 and a spring 7a5, the cam 7a3 is fixedly installed on the rotating disc 6a, the end of the push column 7a1 is in contact with the cam 7a3, the push column 7a1 is horizontally slidably installed on the connecting block 2 through the guide seat 7a4, the spring 7a5 is used to apply an elastic force to the push column 7a1 close to the cam 7a3, and the air inlet pipe 3 is covered and the two displacement plates 8 are opened simultaneously when the light guide hole 5a is rotated to cover the air inlet pipe 3, that is, the cam 7a3 is in contact with the push column 7a1, so that the covering of the air inlet pipe 3 and the opening of the two displacement plates 8 are simultaneously realized, and the accurate work of the equipment is ensured. When the clamping plate 10h is clamped downward into the positioning plate 7a2, the positioning plate 7a2 can be pushed, because the positioning plate 7a2 is in the pushing state of the compressed spring 7a5, that is, the linear pushing mechanism 7a can satisfy the accurate positioning of the displacement plate 8 during cleaning.

[0041] The rotating mechanism 6 further comprises a rotating column 6b and a rotating motor fixedly installed on the connecting block 2 through a motor bracket, one end of the rotating column 6b is fixedly connected with the rotating disc 6a, the other end of the rotating column 6b is fixedly connected with the output end of the rotating motor, and the cam 7a3 is fixedly installed on the rotating column 6b. The rotating motor works, that is, the cam 7a3 and the arc-shaped baffle 5 are driven to rotate synchronously through the rotating column 6b, the rotating disc 6a is located in the heat soaking chamber 2a, the heat soaking chamber 2a is provided with a recess for accommodating the rotating disc 6a, and the rotating column 6b will pass through the output end of the motor fixedly connected with the connecting block 2.

[0042] The inner edge of the arc-shaped baffle 5 is a slope structure, when the arc-shaped baffle 5 is not rotated, the laser is opposite to the inner edge slope of the arc-shaped baffle 5, and the laser shot on the slope will be reflected reciprocatingly in the heat soaking chamber 2a to consume the light, avoiding emitting back into the glass tube 1, the arc-shaped baffle 5 is provided with a light guide hole 5a penetrating through the arc-shaped baffle 5, when the arc-shaped baffle 5 is rotated, the light guide hole is coaxially arranged with the light hole 2b, so that the light can pass through the arc-shaped baffle 5 and be shot on the photoelectric sensor two 4.

[0043] When it is needed to detect whether the light source is damaged, the arc-shaped baffle 5 is rotated through the rotating mechanism 6, and the cam 7a3 is also rotated. The rotation of the arc-shaped baffle 5 covers the air inlet pipe 3, and the rotation of the light guide hole 5a makes the laser just pass through and then be shot on the photoelectric sensor two 4. In order to avoid the misjudgment that the detection result is that the light source is damaged due to the blockage of the air hole 8a, the cam 7a3 drives the two displacement plates 8 to be opened through the transmission column 7d when rotating, so that even if the air hole 8a is blocked, the gap can be opened to allow the light signal to pass through. When the detection result is that the light source is not damaged, the two displacement plates 8 are closed, so that the smoke can enter the glass tube 1, and the photoelectric sensor one cannot detect the light source signal, which means that the air hole 8a is blocked or the smoke concentration is low. In order to exclude the blockage of the air hole 8a, the two displacement plates 8 are opened through the rotating mechanism 6, and the arc-shaped plug plate 10a is pushed down through the electric push rod 10e to clean the semicircular hole of the displacement plate 8. In the process of pushing down, the clamping plate 10h is inserted into the positioning plate 7a2 to accurately position the displacement plate 8, so that the arc-shaped plug plate 10a does not collide with the displacement plate 8 when being inserted. After the semicircular hole of the displacement plate 8 is cleaned, if the photoelectric sensor one still cannot detect the light source signal, it means that the photoelectric sensor one cannot detect the signal due to the low smoke concentration.

[0044] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A soot concentration on-line monitoring system with a light source self-diagnosis function, characterized in that, The device comprises a photoelectric sensor two (4), an arc-shaped baffle (5) and a rotating mechanism (6), the arc-shaped baffle (5) is located in the uniform heating chamber (2a), the arc-shaped baffle (5) is fixedly installed on the rotating disc (6a) of the rotating mechanism (6), the connecting block (2) is provided with a light hole (2b) for the laser to pass through, the detection end of the photoelectric sensor two (4) is opposite to the light hole (2b), and the arc-shaped baffle (5) covers the light hole (2b) when the rotating disc (6a) is not rotated; The tail part of the uniform heating chamber (2a) is a spherical structure, the outer edge of the arc-shaped baffle (5) is attached to the tail part of the uniform heating chamber (2a), the air inlet pipe (3) and the light hole (2b) are communicated with the spherical region of the uniform heating chamber (2a), the outer edge of the arc-shaped baffle (5) covers the light hole (2b) before the arc-shaped baffle (5) is rotated, and the outer edge of the arc-shaped baffle (5) covers the end part of the air inlet pipe (3) after the arc-shaped baffle (5) is rotated; The device further comprises an outward pushing mechanism (7) and two displacement plates (8), the two displacement plates (8) are each provided with a semicircular hole, the two semicircular holes form an air hole (8a), the air hole (8a) is communicated between the glass tube (1) and the uniform heating chamber (2a), the glass tube (1) and the connecting block (2) are fixedly provided with a clamping guide block (9), the displacement plate (8) is slidably installed in the clamping guide block (9), and the outward pushing mechanism (7) is used for pushing the two displacement plates (8) to move close to or away from each other. The outward pushing mechanism (7) comprises a linear pushing mechanism (7a), a triangular block (7e), four guide columns (7b) and two transmission columns (7d), one end of each two guide columns (7b) is fixedly connected with a displacement plate (8), the guide column (7b) is slidably connected with the clamping guide block (9), the clamping guide block (9) is provided with a square sliding hole for sliding of the two displacement plates (8), a plurality of springs one (7c) are arranged in the clamping guide block (9), the plurality of springs one (7c) are used for pushing the two displacement plates (8) inward, the transmission column (7d) is fixedly installed at the top of the displacement plate (8), the transmission column (7d) penetrates through the top of the clamping guide block (9) and is in contact with the inclined surface of the triangular block (7e), and the triangular block (7e) is fixedly installed on the pushing column (7a1) of the linear pushing mechanism (7a).

2. The soot concentration on-line monitoring system with light source self-diagnosis function according to claim 1, characterized in that, The cleaning mechanism (10) is used for cleaning the air hole (8a), the cleaning mechanism (10) comprises a horizontal pushing mechanism, two arc-shaped insertion plates (10a) and a connecting frame (10b), when the displacement plates (8) are in the final positions after being separated, the arc-shaped insertion plates (10a) are coaxially arranged with the semicircular holes on the displacement plates (8), the outer diameter of the arc-shaped insertion plates (10a) is the same as the inner diameter of the air hole (8a), the two arc-shaped insertion plates (10a) are fixedly installed on the connecting frame (10b), and the horizontal pushing mechanism is used for pushing the arc-shaped insertion plates (10a) to move towards the air hole (8a).

3. The soot concentration on-line monitoring system with light source self-diagnosis function according to claim 2, characterized in that, The horizontal pushing mechanism comprises a slide post (10c), a pushing plate (10d) and an electric push rod (10e), the arc-shaped insertion plate (10a) is slidably installed on the connecting block (2), the connecting block (2) is provided with an arc-shaped sliding groove for the arc-shaped insertion plate (10a) to slide, the slide post (10c) is fixedly installed on the connecting frame (10b), the slide post (10c) is inserted into the inclined slot (10d1) of the pushing plate (10d), the electric push rod (10e) is fixedly installed on the connecting block (2), the output end of the electric push rod (10e) is fixedly connected with the pushing plate (10d), and the connecting block (2) is provided with a vertical guide groove for the pushing plate (10d) to vertically slide.

4. The soot concentration on-line monitoring system with light source self-diagnosis function according to claim 3, characterized in that, The horizontal pushing mechanism comprises a slide post (10c), a pushing plate (10d) and an electric push rod (10e), the arc-shaped insertion plate (10a) is slidably installed on the connecting block (2), the connecting block (2) is provided with an arc-shaped sliding groove for the arc-shaped insertion plate (10a) to slide, the slide post (10c) is fixedly installed on the connecting frame (10b), the slide post (10c) is inserted into the inclined slot (10d1) of the pushing plate (10d), the electric push rod (10e) is fixedly installed on the connecting block (2), the output end of the electric push rod (10e) is fixedly connected with the pushing plate (10d), and the connecting block (2) is provided with a vertical guide groove for the pushing plate (10d) to vertically slide.

5. The soot concentration on-line monitoring system with light source self-diagnosis function according to claim 4, characterized in that, The linear pushing mechanism (7a) further comprises a cam (7a3) and a second spring (7a5), the cam (7a3) is fixedly installed on the rotating disc (6a), the end of the pushing post (7a1) is in contact with the cam (7a3), the pushing post (7a1) is slidably installed on the connecting block (2) through a guide seat (7a4), and the second spring (7a5) is used for applying an elastic force to the pushing post (7a1) to make the pushing post (7a1) close to the cam (7a3).

6. The soot concentration on-line monitoring system with light source self-diagnosis function according to claim 5, characterized in that, The rotating mechanism (6) further comprises a rotating post (6b) and a rotating motor, the rotating motor is fixedly installed on the connecting block (2) through a motor frame, one end of the rotating post (6b) is fixedly connected with the rotating disc (6a), the other end of the rotating post (6b) is fixedly connected with the output end of the rotating motor, and the cam (7a3) is fixedly installed on the rotating post (6b).

7. The soot concentration on-line monitoring system with light source self-diagnosis function according to claim 1, characterized in that, The inner edge of the arc-shaped baffle (5) is in a slope structure, when the arc-shaped baffle (5) is not rotated, the laser is opposite to the inner edge slope of the arc-shaped baffle (5), the arc-shaped baffle (5) is provided with a light guide hole penetrating through the arc-shaped baffle (5), and when the arc-shaped baffle (5) is rotated, the light guide hole (5a) is coaxially arranged with the light hole (2b).

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