Ultra-low smoke meter measuring chamber device with purging protection function

Abstract

The utility model relates to the technical field of continuous monitoring of ultra-low smoke dust of a stationary pollution source, and discloses an ultra-low smoke dust meter measuring chamber device with purging protection, which solves the problem that the existing ultra-low smoke dust meter measuring chamber device cannot perform purging protection, and comprises a measuring block, a measuring chamber is arranged in the measuring block, and the measuring chamber is provided with a gas inlet and a gas outlet. A jet device is arranged at one end of the measuring block, a jet channel is formed in the jet device, a light source system and a light source switching block are arranged at the bottom end of the jet device, a transmitting end diaphragm is arranged at the bottom end in the measuring block, an air chamber switching block is fixedly arranged at one end of the top of the measuring block, and a receiving end diaphragm is arranged at the top end in the measuring block. An air supply mechanism is inserted into the other end of the top of the measuring block; a blowing mechanism I and a blowing mechanism II are respectively arranged at the bottom end and the top end in the measuring block; by means of the ultra-low smoke meter measuring chamber device, purging protection can be achieved, and the measuring precision is improved.

Description

Technical Field

[0001] This utility model belongs to the field of continuous monitoring technology for ultra-low dust from stationary pollution sources, specifically a measuring chamber device for ultra-low dust meters with purging protection. Background Technology

[0002] Most continuous ultra-low dust monitoring instruments for stationary pollution sources employ extraction-type measurements, using the laser forward scattering principle to detect dust concentration. Since these instruments operate 24 / 7, although high-temperature transmission of the sample gas minimizes water vapor condensation during transport, practical experience shows that prolonged operation inevitably leads to dirt buildup in the measurement chamber. This increases both the frequency of maintenance and the cost of replacing optical components. To ensure the stability of long-term continuous operation of ultra-low dust monitoring instruments and reduce operating and maintenance costs, a measurement device capable of purging and protecting the measurement chamber is needed. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides an ultra-low dust meter measuring chamber device with purging protection, which effectively solves the problem that the existing ultra-low dust meter measuring chamber cannot perform purging protection.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a measuring chamber device for an ultra-low dust meter with purge protection, comprising a measuring block, wherein a measuring chamber is formed inside the measuring block, a jet device is fixedly provided at one end of the measuring block, a jet channel communicating with the measuring chamber is formed inside the jet device, a light source system and a light source adapter block are fixedly provided at the bottom end of the jet device, the light source system is connected to the measuring block through the light source adapter block, a transmitting end window is provided at the bottom end of the measuring block and located at the top of the light source adapter block, a gas chamber adapter block is fixedly provided at one end of the top of the measuring block, a receiving end window is provided at the top end of the measuring block and located at the bottom of the gas chamber adapter block, a gas supply mechanism is inserted at the other end of the top of the measuring block, and a purge mechanism one and a purge mechanism two are respectively provided at the bottom and top of the measuring block and connected to the gas supply mechanism and matched with the transmitting end window and the receiving end window;

[0005] The air supply mechanism consists of a compressed air tank and a three-way pipe. The three-way pipe connects the compressed air tank to the first and second purging mechanisms. Both the first and second purging mechanisms consist of a triangular air guide hood, an air guide sleeve, and a flat-mouthed air nozzle. One end of the triangular air guide hood is connected to the three-way pipe, and the flat-mouthed air nozzle is connected to the triangular air guide hood through the air guide sleeve.

[0006] Preferably, the compressed air tank is fixedly connected to the measuring block by several support frames, and a solenoid valve and a throttle valve are installed on the three-way pipe.

[0007] Preferably, the flat-mouthed air nozzle is rotatably connected to the measuring block via several short shafts, and several tension springs are provided between the flat-mouthed air nozzle and the measuring block.

[0008] Preferably, the measuring block has mounting grooves at both the top and bottom, and the mounting grooves are equipped with drive adjustment components that match the flat-mouth air nozzle.

[0009] Preferably, the drive adjustment assembly consists of a support arm, a servo motor, and a cam. The servo motor is fixedly connected to the inside of the mounting groove via the support arm, and the cam is fixedly connected to the output shaft of the servo motor and fits against the flat-mouth air nozzle.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) In operation, by setting up an air supply mechanism consisting of a compressed air tank and a three-way pipe, and a purging mechanism one consisting of a triangular air guide cover, an air guide soft sleeve and a flat mouth air nozzle, the transmitting end window and the receiving end window can be purged and protected to avoid dust accumulation affecting measurement accuracy. There is no need for manual maintenance, which improves convenience.

[0012] (2) By setting up solenoid valves and throttle valves, the on-off and off-off of the purging airflow and the airflow size can be controlled. By setting up short shafts, tension springs and drive adjustment components consisting of support arms, servo motors and cams, the flat mouth air nozzle can be driven to swing during the purging process to achieve multi-angle purging work and further improve the purging effect. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the measuring chamber device of the ultra-low dust meter with purge protection according to this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the measuring chamber of the ultra-low dust meter with purge protection according to this utility model.

[0017] Figure 3 This is a schematic diagram of the gas supply mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the purging mechanism of this utility model;

[0019] Figure 5 This utility model Figure 2A partial enlarged view of

[0020] Figure 6 This is a schematic diagram of the drive adjustment component structure of this utility model;

[0021] In the diagram: 1. Measuring block; 2. Measuring chamber; 3. Jet device; 4. Jet channel; 5. Light source system; 6. Light source adapter block; 7. Transmitter window; 8. Gas chamber adapter block; 9. Receiver window; 10. Gas supply mechanism; 11. Purge mechanism one; 12. Purge mechanism two; 13. Compressed gas tank; 14. T-pipe; 15. Triangular air guide shroud; 16. Air guide sleeve; 17. Flat-mouth air nozzle; 18. Support frame; 19. Solenoid valve; 20. Throttle valve; 21. Short shaft; 22. Tension spring; 23. Mounting inner groove; 24. Drive adjustment assembly; 25. Support arm; 26. Servo motor; 27. Cam. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Depend on Figures 1 to 4 The present invention discloses a measuring chamber device for an ultra-low dust meter with purge protection, comprising a measuring block 1, a measuring chamber 2 inside the measuring block 1, a jet device 3 fixedly installed at one end of the measuring block 1, a jet channel 4 connected to the measuring chamber 2 inside the jet device 3, a light source system 5 and a light source adapter block 6 fixedly installed at the bottom end of the jet device 3, the light source system 5 being connected to the measuring block 1 through the light source adapter block 6, a transmitting end window 7 located at the top of the light source adapter block 6 located at the bottom end of the measuring block 1, a gas chamber adapter block 8 fixedly installed at one end of the top of the measuring block 1, a receiving end window 9 located at the bottom end of the gas chamber adapter block 8 located at the top of the measuring block 1, a gas supply mechanism 10 inserted through the other end of the top of the measuring block 1, and a purge mechanism 11 and a purge mechanism 2 12 respectively connected to the gas supply mechanism 10 and matched with the transmitting end window 7 and the receiving end window 9 inside the measuring block 1.

[0024] The air supply mechanism 10 consists of a compressed air tank 13 and a three-way pipe 14. The three-way pipe 14 is connected between the compressed air tank 13 and the first purging mechanism 11 and the second purging mechanism 12. The first purging mechanism 11 and the second purging mechanism 12 are both composed of a triangular air guide shroud 15, an air guide sleeve 16 and a flat-mouth air nozzle 17. One end of the triangular air guide shroud 15 is connected to the three-way pipe 14. The flat-mouth air nozzle 17 is connected to the triangular air guide shroud 15 through the air guide sleeve 16. The compressed air tank 13 is fixedly connected to the measuring block 1 through several support frames 18. A solenoid valve 19 and a throttle valve 20 are provided on the three-way pipe 14.

[0025] During the measurement process, smoke and dust will adhere to the surfaces of the transmitting end window 7 and the receiving end window 9. At this time, the solenoid valve 19 is opened, and air is supplied through the compressed air tank 13. The flow rate is regulated by the throttle valve 20. The gas enters the flat-mouth blowing nozzle 17 through the triangular air guide shroud 15 and the air guide soft sleeve 16, and then blows out through the flat-mouth blowing nozzle 17. It can be used for intermittent purging or continuous purging, and can form a protective air curtain on the surfaces of the transmitting end window 7 and the receiving end window 9.

[0026] Depend on Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the flat-mouth air nozzle 17 is rotatably connected to the measuring block 1 via several short shafts 21. Several tension springs 22 are provided between the flat-mouth air nozzle 17 and the measuring block 1. The top and bottom ends of the measuring block 1 are provided with mounting grooves 23. The mounting grooves 23 are provided with a drive adjustment component 24 that matches the flat-mouth air nozzle 17. The drive adjustment component 24 consists of a support arm 25, a servo motor 26 and a cam 27. The servo motor 26 is fixedly connected to the inside of the mounting groove 23 via the support arm 25. The cam 27 is fixedly connected to the output shaft of the servo motor 26 and is in contact with the flat-mouth air nozzle 17.

[0027] During the purging process, the servo motor 26 drives the cam 27 to rotate. The combined action of the cam 27 and the tension spring 22 can drive the flat-mouth air nozzle 17 to swing back and forth around the central axis of the short axis 21, thereby adjusting the purging angle of the flat-mouth air nozzle 17 and further improving the comprehensiveness of the purging.

[0028] During operation, by setting up an air supply mechanism consisting of a compressed air tank and a three-way pipe, and two purging mechanisms consisting of a triangular air guide shroud, an air guide sleeve, and a flat-mouthed air nozzle, the transmitting and receiving end windows can be purged and protected, preventing dust accumulation from affecting measurement accuracy. This also eliminates the need for manual maintenance, improving convenience. The presence of a solenoid valve and a throttle valve controls the flow and magnitude of the purging airflow. Furthermore, the use of a short shaft, tension spring, and a drive adjustment assembly consisting of a support arm, servo motor, and cam allows the flat-mouthed air nozzle to swing during purging, enabling multi-angle purging and further improving the purging effect.

Claims

1. A measuring chamber device for an ultra-low dust meter with purge protection, comprising a measuring block (1), characterized in that: The measuring block (1) has a measuring chamber (2) inside. A jet device (3) is fixedly installed at one end of the measuring block (1). A jet channel (4) communicating with the measuring chamber (2) is opened inside the jet device (3). A light source system (5) and a light source adapter block (6) are fixedly installed at the bottom of the jet device (3). The light source system (5) is connected to the measuring block (1) through the light source adapter block (6). The bottom of the measuring block (1) is provided with an emission end window located at the top of the light source adapter block (6). (7) A gas chamber adapter block (8) is fixedly installed at one end of the top of the measuring block (1). A receiving end window (9) located at the bottom of the gas chamber adapter block (8) is installed at the top of the measuring block (1). A gas supply mechanism (10) is inserted at the other end of the top of the measuring block (1). A purge mechanism one (11) and a purge mechanism two (12) are respectively installed at the bottom and top of the measuring block (1) to connect with the gas supply mechanism (10) and to match the transmitting end window (7) and the receiving end window (9). Among them, the air supply mechanism (10) consists of a compressed air tank (13) and a three-way pipe (14). The three-way pipe (14) is connected between the compressed air tank (13) and the first purging mechanism (11) and the second purging mechanism (12). The first purging mechanism (11) and the second purging mechanism (12) are both composed of a triangular air guide hood (15), an air guide sleeve (16) and a flat-mouth air nozzle (17). One end of the triangular air guide hood (15) is connected to the three-way pipe (14), and the flat-mouth air nozzle (17) is connected to the triangular air guide hood (15) through the air guide sleeve (16).

2. The ultra-low dust meter measuring chamber device with purging protection according to claim 1, characterized in that: The compressed air tank (13) is fixedly connected to the measuring block (1) by several support frames (18), and a solenoid valve (19) and a throttle valve (20) are provided on the three-way pipe (14).

3. The ultra-low dust meter measuring chamber device with purging protection according to claim 1, characterized in that: The flat-mouth air nozzle (17) is rotatably connected to the measuring block (1) via several short shafts (21), and several tension springs (22) are provided between the flat-mouth air nozzle (17) and the measuring block (1).

4. The ultra-low dust meter measuring chamber device with purging protection according to claim 1, characterized in that: The measuring block (1) has an inner mounting groove (23) at both the top and bottom. The inner mounting groove (23) is equipped with a drive adjustment component (24) that matches the flat mouth air nozzle (17).

5. The ultra-low dust meter measuring chamber device with purging protection according to claim 4, characterized in that: The drive adjustment assembly (24) consists of a support arm (25), a servo motor (26) and a cam (27). The servo motor (26) is fixedly connected to the inside of the mounting groove (23) through the support arm (25). The cam (27) is fixedly connected to the output shaft of the servo motor (26) and fits against the flat mouthpiece (17).

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