Online measuring system for weight, concentration and flow of tobacco powder and dust

Abstract

The utility model discloses a tobacco powder dust weight, concentration and flow volume on-line measuring system which comprises a dust feeding module, a dust measuring module and a discharging module, the dust measuring module comprises a dust collecting funnel, a dust measuring stock bin, a dust flowmeter and a control module, the top end of the dust collecting funnel is communicated with the dust feeding module, and the top end of the dust measuring stock bin is communicated with the discharging module. The bottom end of the dust collecting hopper is communicated with the dust measuring bin, a dust low-level sensor is arranged at the bottom end of the dust collecting hopper, an electronic scale is arranged in the dust measuring bin, the dust flow meter is arranged at the communication position of the dust collecting hopper and the dust measuring bin, and the control module is electrically connected with the dust feeding module, the discharging module, the dust low-level sensor, the electronic scale and the dust flow meter. The technical problem that in the prior art, due to the fact that no system capable of monitoring the dust weight, the dust concentration and the dust flowing amount exists, early warning cannot be conducted on potential risks existing in tobacco production and processing is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cigarette production management, and particularly relates to an on-line measurement system for the weight, concentration and flow rate of tobacco dust. Background Technique

[0002] With the development of the tobacco industry and the improvement of national safety production requirements, during the tobacco production and processing process, the dust weight, dust concentration and dust flow rate in the dust removal hopper shall not exceed the set threshold to avoid safety accidents.

[0003] At present, there is no system that can monitor the dust weight, dust concentration and dust flow rate, so it is impossible to warn of potential risks existing in the tobacco production and processing process. Therefore, there is an urgent need for an on-line dust measurement system that monitors the dust weight, dust concentration and dust flow rate in the dust removal hopper, so as to timely warn of potential risks in advance, ensure the smooth progress of tobacco production and processing, and improve the production efficiency and intelligent level of the tobacco factory. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an on-line measurement system for the weight, concentration and flow rate of tobacco dust, so as to overcome the technical problem in the prior art that there is no system that can monitor the dust weight, dust concentration and dust flow rate, and it is impossible to warn of potential risks existing in tobacco production and processing. The specific technical solutions are as follows:

[0005] The utility model provides an on-line measurement system for the weight, concentration and flow rate of tobacco dust, which includes a dust feeding module, a dust measurement module and a discharging module. The dust measurement module includes a dust collection funnel, a dust measurement bin, a dust flow meter and a control module;

[0006] The dust collection funnel is provided with a first feeding port and a first discharging port. The first feeding port is communicated with the dust feeding module, the first discharging port is communicated with the dust measurement bin, and a dust low-level sensor is arranged near the first discharging port of the dust collection funnel;

[0007] The dust measurement bin is provided with a second feeding port and an electronic scale. The second feeding port is communicated with the first discharging port, and the electronic scale is arranged in the dust measurement bin and is directly below the second feeding port;

[0008] The dust flow meter is arranged between the first discharging port and the second feeding port;

[0009] The control module is electrically connected to the dust feeding module, the discharging module, the dust low-level sensor, the electronic scale and the dust flow meter.

[0010] Preferably, a dust high-level sensor is provided at one end of the dust collection funnel near the first feed inlet, and the dust high-level sensor is electrically connected to the control module.

[0011] Preferably, the control module includes a PLC controller, an interactive display screen, a manual emergency button, and an automatic sampling button;

[0012] The interactive display screen, the manual emergency button, the automatic sampling button, the dust feeding module, the discharging module, the dust low-level sensor, the electronic scale, and the dust flowmeter are all electrically connected to the PLC controller.

[0013] Preferably, a dust baffle is provided at one end of the dust collection funnel near the first feed inlet. The dust baffle is connected to the dust collection funnel through a fixed bracket and is located between the first feed inlet and the dust high-level sensor.

[0014] Preferably, the dust feeding module includes a dust feed inlet, a dust collector bin, a dust collector injection air inlet, a dust collector injection air outlet, a dust collector bin funnel, and a scraper motor;

[0015] The dust feed inlet, the dust collector bin, the dust collector injection air outlet, the dust collector bin funnel, and the scraper motor are connected in sequence. The dust collector injection air inlet is connected to the dust collector bin for blowing air into the dust collector bin;

[0016] The dust feed inlet is used to receive dust in the workshop, and the discharge outlet of the scraper motor is connected to the first feed inlet;

[0017] The dust collector injection air inlet, the dust collector injection air outlet, and the scraper motor are all electrically connected to the control module.

[0018] Preferably, the discharging module includes a discharging screw conveyor and an upper screw conveyor;

[0019] The discharging screw conveyor is arranged in the dust measuring bin and is located between the electronic scale and the second discharge outlet opened at the bottom of the dust measuring bin. The discharging screw conveyor is used to convey the dust on the electronic scale to the second discharge outlet;

[0020] The feed inlet of the upper screw conveyor is connected to the second discharge outlet, and the discharge outlet of the upper screw conveyor is located at one end of the upper screw conveyor far from the second discharge outlet;

[0021] The discharging screw conveyor and the upper screw conveyor are both electrically connected to the control module.

[0022] Preferably, a sampling module is further provided in the discharging module. The sampling module includes a sampling motor, a sampling pipe, and a sampling valve.

[0023] The sampling pipe is communicated with the upper screw conveyor. The connection between the sampling pipe and the upper screw conveyor is located between the feeding port and the discharging port of the upper screw conveyor.

[0024] The sampling motor is installed on the pipe wall of one end of the sampling pipe away from the upper screw conveyor and is communicated with the inside of the sampling pipe.

[0025] The sampling valve is arranged on the sampling pipe and is located between the sampling motor and the upper screw conveyor. The sampling valve is used to control the opening and closing of the sampling pipe.

[0026] Both the sampling motor and the sampling valve are electrically connected to the control module.

[0027] Preferably, an explosion-proof valve is arranged between the first discharging port and the second feeding port. The first discharging port is communicated with the feeding port of the explosion-proof valve, and the second feeding port is communicated with the discharging port of the explosion-proof valve.

[0028] The explosion-proof valve is electrically connected to the control module.

[0029] Preferably, an ultrasonic emitter is arranged in the dust collection funnel. The ultrasonic emitter is electrically connected to the control module.

[0030] Compared with the existing technology, the utility model has the following beneficial effects:

[0031] The on-line measurement system for the weight, concentration and flow rate of tobacco dust provided by the utility model collects the weight of the dust entering the powder measurement bin through an electronic scale. The dust low-level sensor detects the dust at the lowest point in the dust collection funnel, and the trigger signal is sent to the control module. The control module records the time point. The dust flowmeter collects the air volume of the air with dust. The weight change threshold of the electronic scale, the weight upper limit threshold of the electronic scale, the weight change time threshold, the dust flow rate threshold and the dust concentration threshold are set in the control module. Based on each time point recorded by the control module, the air volume collected by the dust flowmeter, the weight collected by the electronic scale, the weight change threshold of the electronic scale, the weight upper limit threshold of the electronic scale, the weight change time threshold, the dust flow rate threshold and the dust concentration threshold, the on-line monitoring of the dust weight, concentration and flow rate is realized. It solves the technical problem in the existing technology that there is no system capable of monitoring the dust weight, dust concentration and dust flow rate, and it is impossible to give early warning of the potential risks existing in the tobacco production and processing, ensures the smooth progress of the tobacco production and processing, and improves the production efficiency and intelligent level of the tobacco factory. Description of the Drawings

[0032] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0033] Figure 1 It is a schematic structural diagram of an on-line measurement system for the weight, concentration and flow rate of tobacco dust in the present utility model.

[0034] Main reference numeral description:

[0035] 1 - dust collection funnel, 2 - dust measurement bin, 3 - dust low-level sensor, 4 - electronic scale, 5 - dust high-level sensor, 6 - PLC controller, 7 - interactive display screen, 8 - manual emergency button, 9 - automatic sampling button, 10 - dust baffle, 11 - dust inlet, 12 - dust collector bin, 13 - dust collector injection air inlet, 14 - dust collector injection air outlet, 15 - dust collector bin funnel, 16 - scraper motor, 17 - discharge screw conveyor, 18 - upper screw conveyor, 19 - sampling motor, 20 - sampling pipe, 21 - sampling valve, 22 - explosion-proof valve, 23 - ultrasonic transmitter. Detailed implementation manners

[0036] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top part", "bottom part", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there are descriptions of the terms "first", "second", "third", etc., they are only for descriptive purposes and for distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The following will describe the embodiments according to the overall structure of the present utility model.

[0040] Embodiment

[0041] As Figure 1 shown, the embodiment of the present application provides an on-line measurement system for the weight, concentration and flow rate of tobacco dust, including a dust feeding module, a dust measurement module and a discharging module. The dust measurement module includes a dust collection funnel 1, a dust measurement bin 2, a dust flowmeter and a control module.

[0042] The dust collection funnel 1 is provided with a first feeding port and a first discharging port. The first feeding port is communicated with the dust feeding module, and the first discharging port is communicated with the dust measurement bin 2. A dust low-level sensor 3 is arranged near the first discharging port of the dust collection funnel 1, and a dust high-level sensor 5 is arranged at one end of the dust collection funnel 1 near the first feeding port.

[0043] Specifically, the dust feeding module includes a dust feeding port 11, a dust collector bin 12, a dust collector blowing air inlet 13, a dust collector blowing air outlet 14, a dust collector bin funnel 15 and a scraper motor 16. The dust feeding port 11, the dust collector bin 12, the dust collector blowing air outlet 14, the dust collector bin funnel 15 and the scraper motor 16 are communicated in sequence. The dust collector blowing air inlet 13 is communicated with the dust collector bin 12 for blowing air into the dust collector bin 12. The dust feeding port 11 is used to receive dust in the workshop, and the discharging port of the scraper motor 16 is communicated with the first feeding port.

[0044] Among them, both the dust low-level sensor 3 and the dust high-level sensor 5 are level gauges.

[0045] The dust measurement bin 2 is provided with a second feed inlet, a second discharge outlet and an electronic scale 4. The second feed inlet is communicated with the first discharge outlet. The electronic scale 4 is arranged in the dust measurement bin 2 and is located directly below the second feed inlet. The second discharge outlet is communicated with the discharge module.

[0046] Specifically, the discharge module includes a discharge screw conveyor 17 and an upper screw conveyor 18. The discharge screw conveyor 17 is arranged in the dust measurement bin 2 and is placed between the electronic scale 4 and the second discharge outlet opened at the bottom end of the dust measurement bin 2. The discharge screw conveyor 17 is used to convey the dust on the electronic scale 4 to the second discharge outlet. The feed inlet of the upper screw conveyor 18 is communicated with the second discharge outlet. The discharge outlet of the upper screw conveyor 18 is located at one end of the upper screw conveyor 18 far from the second discharge outlet.

[0047] Preferably, in order to increase safety and avoid the risk of dust explosion, an explosion-proof valve 22 is arranged between the first discharge outlet and the second feed inlet. The first discharge outlet is communicated with the feed inlet of the explosion-proof valve 22. The second feed inlet is communicated with the discharge outlet of the explosion-proof valve 22.

[0048] The dust flowmeter is arranged between the first discharge outlet and the second feed inlet.

[0049] Specifically, the dust flowmeter is located at one end of the explosion-proof valve 22 close to the second feed inlet. The dust flowmeter is used to count the air volume of the gas with dust entering the dust measurement bin 2.

[0050] The control module is electrically connected to the dust feed module, the discharge module, the dust low-level sensor 3, the electronic scale 4, the dust high-level sensor 5, the dust flowmeter, and the explosion-proof valve 22.

[0051] Specifically, the control module is electrically connected to the dust collector blowing air inlet 13, the dust collector blowing air outlet 14, the scraper motor 16, the discharge screw conveyor 17, the upper screw conveyor 18, the dust low-level sensor 3, the electronic scale 4, the dust high-level sensor 5, the dust flowmeter, and the explosion-proof valve 22. More specifically, the control module includes a PLC controller 6, an interactive display screen 7, and a manual emergency button 8. The PLC controller 6 is electrically connected to the dust collector blowing air inlet 13, the dust collector blowing air outlet 14, the scraper motor 16, the discharge screw conveyor 17, the upper screw conveyor 18, the dust low-level sensor 3, the electronic scale 4, the dust high-level sensor 5, the dust flowmeter, the explosion-proof valve 22, the interactive display screen 7, and the manual emergency button 8.

[0052] Working principle: The dust low-level sensor 3 is used to detect the dust entering the dust measurement bin 2 from the dust collection hopper 1, and transmit the collected signal to the PLC controller 6. The PLC controller 6 records each moment. The dust flowmeter collects the air volume of the air with entrained dust entering the dust measurement bin 2 from the dust collection hopper 1, and transmits the air volume signal to the PLC controller 6. The electronic scale 4 collects the weight of the dust entering the dust measurement bin 2, and transmits the signal with the dust weight collected to the PLC controller 6. The weight change threshold Δm of the electronic scale 4, the weight upper limit threshold M of the electronic scale 4, the weight change time threshold T, the dust flow-through threshold Q and the dust concentration threshold C are set through the interactive display screen 7 and the PLC controller 6, where M≥2*Δm. Based on each moment recorded by the PLC controller 6, the air volume collected by the dust flowmeter, the weight collected by the electronic scale 4, the weight change threshold Δm of the electronic scale 4, the weight upper limit threshold M of the electronic scale 4, the weight change time threshold T, the dust flow-through threshold Q and the dust concentration threshold C, the on-line monitoring of the dust weight, concentration and flow-through amount is realized.

[0053] Among them, when the amount of dust in the dust collection hopper 1 is large and the dust high-level sensor 5 is triggered, the dust high-level sensor 5 triggers an early warning signal and transmits it to the PLC controller 6. The PLC controller 6 shuts down the scraper motor 16 to stop feeding. When the dust low-level sensor 3 continuously detects a dust signal and the dust weight collected by the electronic scale 4 reaches the set threshold, the PLC controller 6 closes the explosion-proof valve 22, turns on the discharge screw conveyor 17 and the upper screw conveyor 18, and discharges the dust on the electronic scale 4 through the discharge screw conveyor 17 and the upper screw conveyor 18 until the dust weight in the electronic scale 4 drops below a reasonable threshold. The PLC controller 6 controls the explosion-proof valve 22 to open and controls the discharge screw conveyor 17 and the upper screw conveyor 18 to close. The interactive display screen 7 is used to view the system parameters and set the parameters of each device in the system. The manual emergency button 8 is used when the staff finds a blockage at the rear end of the dust collector bin 12. Press the manual emergency button 8 and transmit the trigger signal to the PLC controller 6. The PLC controller 6 controls the scraper motor 16 to close and at the same time controls the discharge screw conveyor 17 and the upper screw conveyor 18 to quickly discharge the blocked dust. The PLC controller 6 can be SIMATIC S7-1500.

[0054] Preferably, in order to improve the practicability of the present application, the control module is further provided with an automatic sampling button 9, and the discharging module is provided with a sampling module. The sampling module includes a sampling motor 19, a sampling pipe 20, and a sampling valve 21. The sampling pipe 20 is communicated with the upper screw conveyor 18. The connection between the sampling pipe 20 and the upper screw conveyor 18 is located between the feeding port and the discharging port of the upper screw conveyor 18. The sampling motor 19 is installed on the pipe wall of the end of the sampling pipe 20 away from the upper screw conveyor 18 and is communicated with the inside of the sampling pipe 20. The sampling valve 21 is arranged on the sampling pipe 20 and is located between the sampling motor 19 and the upper screw conveyor 18. The sampling valve 21 is used to control the opening and closing of the sampling pipe 20. The automatic sampling button 9, the sampling motor 19, and the sampling valve 21 are all electrically connected to the control module.

[0055] Among them, when it is necessary to sample the dust in the dust collector, the staff presses the automatic sampling button 9. The PLC controller 6 receives the trigger signal and controls the discharging screw conveyor 17, the upper screw conveyor 18, the sampling motor 19, and the sampling valve 21 to open. At this time, the dust is discharged from the sampling pipe 20 to realize the sampling function. At the same time, the sampling module can also act as an emergency discharge port. When the staff presses the manual emergency button 8, the dust blocked at the rear end of the dust collector bin funnel 15 can be discharged not only through the discharging screw conveyor 17 and the upper screw conveyor 18, but also through the sampling motor 19, the sampling pipe 20, and the sampling valve 21.

[0056] Preferably, a dust baffle 10 is arranged at one end of the dust collection funnel 1 close to the first feeding port. The dust baffle 10 is connected to the dust collection funnel 1 through a fixing bracket and is located between the first feeding port and the dust high-level sensor 5. The dust baffle 10 is used to prevent the dust falling from the first feeding port from being detected and accidentally triggering the dust high-level sensor 5, resulting in the PLC controller 6 closing the scraper motor 16 in advance. The material of the dust baffle 10 can be stainless steel.

[0057] Preferably, an ultrasonic transmitter 23 is arranged in the dust collection funnel 1. The ultrasonic transmitter 23 is electrically connected to the control module. Specifically, the ultrasonic transmitter 23 is electrically connected to the PLC controller 6. The ultrasonic transmitter 23 is used to emit ultrasonic waves to oscillate the dust collection funnel 1 to accelerate the falling of the dust.

[0058] In summary, the on-line measurement system for the weight, concentration and flow rate of tobacco dust provided by the present application collects the weight of the dust entering the powder measurement bin through an electronic scale. The dust low-level sensor detects the dust at the lowest point in the dust collection funnel, and the trigger signal is sent to the control module. The control module records the time point. The dust flow meter collects the air volume of the air with dust. The weight change threshold of the electronic scale, the upper weight threshold of the electronic scale, the weight change time threshold, the dust flow rate threshold and the dust concentration threshold are set in the control module. Based on each time point recorded by the control module, the air volume collected by the dust flow meter, the weight collected by the electronic scale, the weight change threshold of the electronic scale, the upper weight threshold of the electronic scale, the weight change time threshold, the dust flow rate threshold and the dust concentration threshold, the on-line monitoring of the dust weight, concentration and flow rate is realized. It solves the technical problem in the prior art that there is no system capable of monitoring the dust weight, dust concentration and dust flow rate, and thus it is impossible to give early warning of the potential risks existing in tobacco production and processing, ensuring the smooth progress of tobacco production and processing, and improving the production efficiency and intelligent level of the tobacco factory. At the same time, through the manual emergency button, the staff can turn off the scraper motor and discharge the blocked dust when the system has a blockage fault, improving the emergency handling level of the tobacco factory. By setting the automatic sampling button and the sampling module, the function of sampling the dust in the dust collector is realized, improving the intelligent level of the tobacco factory.

[0059] The foregoing description of the specific exemplary embodiments of the present invention is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made in light of the above teachings. Although the embodiments of the present invention have been shown and described, the specific embodiments are merely interpretations of the present invention and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can, after reading this specification, make modifications, substitutions, variations and various different selections and changes that do not make creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An online measurement system for smoke dust weight, concentration and flow rate, comprising a dust feeding module, a dust measuring module and a discharge module, characterized in that: The dust measurement module comprises a dust collection funnel (1), a dust measurement silo (2), a dust flow meter and a control module; The dust collecting funnel (1) is provided with a first feed inlet and a first discharge outlet, the first feed inlet is connected to the dust feed module, the first discharge outlet is connected to the dust measuring silo (2), and the dust collecting funnel (1) is provided with a dust low-level sensor (3) near the first discharge outlet; The dust measurement silo (2) is provided with a second material inlet and an electronic scale (4), the second material inlet is connected to the first material outlet, and the electronic scale (4) is arranged in the dust measurement silo (2) and is located directly below the second material inlet; The dust flow meter is arranged between the first discharge port and the second feed port; The control module is electrically connected to the dust feeding module, the discharging module, the dust low-level sensor (3), the electronic scale (4) and the dust flow meter.

2. The online measurement system for smoke dust weight, concentration and flow rate according to claim 1 is characterized in that: A dust high-level sensor (5) is provided at one end of the dust collecting funnel (1) close to the first feed inlet, and the dust high-level sensor (5) is electrically connected to the control module.

3. The online measurement system for smoke dust weight, concentration and flow rate according to claim 2 is characterized in that: The control module comprises a PLC controller (6), an interactive display screen (7), a manual emergency button (8) and an automatic sampling button (9); The interactive display screen (7), the manual emergency button (8), the automatic sampling button (9), the dust feeding module, the discharging module, the dust low-level sensor, the electronic scale (4) and the dust flow meter are all electrically connected to the PLC controller (6).

4. The online measurement system for smoke dust weight, concentration and flow rate according to claim 2 is characterized in that: A dust baffle (10) is provided at one end of the dust collecting funnel (1) close to the first feed inlet. The dust baffle (10) is connected to the dust collecting funnel (1) via a fixed bracket and is located between the first feed inlet and the dust high-level sensor (5).

5. The online measurement system for smoke dust weight, concentration and flow rate according to claim 1 is characterized in that: The dust feeding module comprises a dust feeding port (11), a dust collector silo (12), a dust collector blowing air inlet (13), a dust collector blowing air outlet (14), a dust collector silo funnel (15) and a scraper motor (16); The dust feed port (11), the dust collector silo (12), the dust collector blowing outlet (14), the dust collector silo hopper (15) and the scraper motor (16) are connected in sequence, and the dust collector blowing inlet (13) is connected to the dust collector silo (12) for blowing air into the dust collector silo (12); The dust feed port (11) is used to receive dust in the workshop, and the discharge port of the scraper motor (16) is connected to the first feed port; The dust collector blowing air inlet (13), the dust collector blowing air outlet (14) and the scraper motor (16) are all electrically connected to the control module.

6. The online measurement system for smoke dust weight, concentration and flow rate according to claim 1 is characterized in that: The discharging module comprises a discharging screw conveyor (17) and an upper screw conveyor (18); The discharge screw conveyor (17) is arranged in the dust measuring silo (2) and is placed between the electronic scale (4) and a second discharge port opened at the bottom end of the dust measuring silo (2). The discharge screw conveyor (17) is used to convey the dust on the electronic scale (4) to the second discharge port; The feed port of the upper screw conveyor (18) is connected to the second discharge port, and the discharge port of the upper screw conveyor (18) is located at an end of the upper screw conveyor (18) away from the second discharge port; The discharge screw conveyor (17) and the upper screw conveyor (18) are both electrically connected to the control module.

7. The online measurement system for smoke dust weight, concentration and flow rate according to claim 6 is characterized in that: The discharging module is also provided with a sampling module, and the sampling module comprises a sampling motor (19), a sampling tube (20) and a sampling valve (21); The sampling tube (20) is connected to the upper screw conveyor (18), and the connection point between the sampling tube (20) and the upper screw conveyor (18) is located between the feed port and the discharge port of the upper screw conveyor (18); The sampling motor (19) is installed on the wall of one end of the sampling tube (20) away from the upper screw conveyor (18), and is communicated with the interior of the sampling tube (20); The sampling valve (21) is arranged on the sampling tube (20) and is located between the sampling motor (19) and the upper screw conveyor (18), and the sampling valve (21) is used to control the opening and closing of the sampling tube (20); The sampling motor (19) and the sampling valve (21) are both electrically connected to the control module.

8. The on-line measurement system for smoke dust weight, concentration and flow rate according to claim 1 is characterized in that: An explosion-proof valve (22) is provided between the first discharge port and the second feed port, the first discharge port is communicated with the feed port of the explosion-proof valve (22), and the second feed port is communicated with the discharge port of the explosion-proof valve (22); The explosion-proof valve (22) is electrically connected to the control module.

9. The on-line measurement system for smoke dust weight, concentration and flow rate according to claim 1, characterized in that: An ultrasonic transmitter (23) is provided in the dust collection funnel (1), and the ultrasonic transmitter (23) is electrically connected to the control module.

Images