Waste gas dust detection equipment

Abstract

The utility model discloses waste gas dust detection equipment, which is characterized in that a controller is used for controlling an electromagnetic valve to be disconnected, controlling a second three-way electromagnetic valve to enable a main back-flushing pipe to be communicated with a first back-flushing branch pipe, controlling a first three-way electromagnetic valve to enable the first back-flushing branch pipe to be communicated with a detection cavity, and outputting airflow by an output end of a suction fan. Through diversion of a main backflushing pipe and a first backflushing branch pipe, backflushing is carried out on the interior of a detection cavity, backflushing airflow is filtered through a filtering mechanism, airflow circulation is achieved, size backflushing is carried out on the interior of the detection cavity, and after backflushing is carried out for a period of time, a controller controls a first three-way electromagnetic valve to be disconnected; a second three-way electromagnetic valve is controlled to enable a main backflushing pipe to be communicated with a second backflushing branch pipe, and airflow output by the output end of a suction fan performs backflushing on the detection end of a dust concentration tester in a detection cavity, so that the detection end of the dust concentration tester is cleaned, and the accuracy of waste gas dust concentration detection is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of dust detection equipment, in particular to an exhaust gas dust detection equipment. Background Technique

[0002] With the improvement of people's living standards, environmental dust detection has received more and more attention in both daily life and various construction operation scenarios. Dust floating in the air will not only pollute the environment, but also endanger people's physical health. During industrial production, the discharged exhaust gas will be detected by dust detection equipment to check whether it is qualified.

[0003] However, when the current exhaust gas dust detection equipment detects exhaust gas, the dust contained in the exhaust gas will adhere to the detection end of the dust concentration detector, resulting in inaccurate detection of the detection equipment. In view of the above problems, an exhaust gas dust detection equipment is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide an exhaust gas dust detection equipment to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] An exhaust gas dust detection equipment, including a mounting frame and a box body. The box body is fixedly installed on the mounting frame. A box door is rotatably connected to the opening of the box body. A display is fixedly installed on the box door. A detection chamber, a controller, a suction fan and a filtering mechanism are fixedly installed in the box body. The intake end of the detection chamber is fixedly communicated with a first three-way solenoid valve. One end of the first three-way solenoid valve is fixedly communicated with a collection pipe. One end of the collection pipe penetrates through the side wall of the box body. A dust concentration detector is fixedly installed on the top of the detection chamber. The outlet end of the detection chamber is communicated with the intake port at the top of the filtering mechanism. The outlet end of the filtering mechanism is fixedly communicated with the input end of the suction fan. The output end of the suction fan is fixedly communicated with a three-way joint. The other two ends of the three-way joint are respectively communicated with an exhaust pipe and a main backflush pipe. An electromagnetic valve is arranged on the exhaust pipe. The end of the main backflush pipe is fixedly communicated with a second three-way solenoid valve. The other two ends of the second three-way solenoid valve are respectively fixedly communicated with a first backflush branch pipe and a second backflush branch pipe. The other end of the first backflush branch pipe is connected with the first three-way solenoid valve, and the other end of the second backflush branch pipe is connected with the detection chamber.

[0007] As a further scheme of the utility model: The end of the second backflush branch pipe connected to the detection chamber is directly below the monitoring end of the dust concentration detector.

[0008] As a further solution of the utility model: The filtering mechanism includes a connecting cover and a housing. A filter element is fixedly installed inside the housing. The housing is fixedly installed at the bottom of the connecting cover. A connecting pipe is fixedly installed at the air inlet of the filtering mechanism at the bottom of the connecting cover. The connecting pipe is arranged inside the filter element, and a through hole is opened at one end of the connecting pipe inside the filter element.

[0009] As a further solution of the utility model: Mounting legs are arranged on the connecting cover.

[0010] As a further solution of the utility model: A top cover is fixedly installed above the box body at the top of the mounting frame.

[0011] As a further solution of the utility model: The controller is electrically connected to the dust concentration detector, the first three-way solenoid valve, the solenoid valve, the suction fan, the second three-way solenoid valve and the display respectively.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. In the utility model, the controller controls the solenoid valve to be open-circuited, controls the second three-way solenoid valve to make the main backflush pipe communicate with the first backflush branch pipe, controls the first three-way solenoid valve to make the first backflush branch pipe communicate with the detection cavity, the output end of the suction fan outputs air flow, through the diversion of the main backflush pipe and the first backflush branch pipe, the detection cavity is backflushed, the backflushed air flow is filtered by the filtering mechanism, the air flow circulation is realized, the dimensional backflush of the detection cavity is realized. After backflushing for a period of time, the controller controls the first three-way solenoid valve to be open-circuited, controls the second three-way solenoid valve to make the main backflush pipe communicate with the second backflush branch pipe, and the air flow output by the output end of the suction fan backflushes the detection end of the dust concentration detector in the detection cavity, realizing the cleaning of the detection end of the dust concentration detector, which is beneficial to the accuracy of the waste gas dust concentration detection.

[0014] 2. In the utility model, the air flow flowing out of the detection cavity enters the connecting pipe from the air inlet of the connecting cover, flows into the filter element through the through hole provided in the connecting pipe, and the filter element filters the flowing air flow, realizing the filtering of the air flow. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a waste gas dust detection device.

[0016] Figure 2 It is a sectional view of the box body in a waste gas dust detection device.

[0017] Figure 3 It is a sectional view of the filtering mechanism in a waste gas dust detection device.

[0018] In the figure: 1, mounting rack; 2, top cover; 3, box body; 4, box door; 5, display; 6, collecting pipe; 7, detection chamber; 8, dust concentration detector; 9, first three-way solenoid valve; 10, controller; 11, exhaust pipe; 12, solenoid valve; 13, main backflush pipe; 14, three-way joint; 15, suction fan; 16, first backflush branch pipe; 17, second three-way solenoid valve; 18, second backflush branch pipe; 19, filtering mechanism; 20, connecting cover; 21, housing; 22, connecting pipe; 23, filter element. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 3 , in the embodiment of the present invention, an exhaust gas and dust detection device includes a mounting rack 1 and a box body 3. The box body 3 is fixedly installed on the mounting rack 1. A box door 4 is rotatably connected to the opening of the box body 3. A display 5 is fixedly installed on the box door 4. A detection chamber 7, a controller 10, a suction fan 15 and a filtering mechanism 19 are fixedly installed in the box body 3. The intake end of the detection chamber 7 is fixedly communicated with a first three-way solenoid valve 9. One end of the first three-way solenoid valve 9 is fixedly communicated with a collecting pipe 6. One end of the collecting pipe 6 penetrates through the side wall of the box body 3. A dust concentration detector 8 is fixedly installed on the top of the detection chamber 7. The outlet end of the detection chamber 7 is communicated with the intake port at the top of the filtering mechanism 19. The outlet end of the filtering mechanism 19 is fixedly communicated with the input end of the suction fan 15. The output end of the suction fan 15 is fixedly communicated with a three-way joint 14. The other two ends of the three-way joint 14 are respectively communicated with an exhaust pipe 11 and a main backflush pipe 13. A solenoid valve 12 is arranged on the exhaust pipe 11. The end of the main backflush pipe 13 is fixedly communicated with a second three-way solenoid valve 17. The other two ends of the second three-way solenoid valve 17 are respectively fixedly communicated with a first backflush branch pipe 16 and a second backflush branch pipe 18. The other end of the first backflush branch pipe 16 is connected to the first three-way solenoid valve 9. The other end of the second backflush branch pipe 18 is connected to the detection chamber 7. The end of the second backflush branch pipe 18 connected to the detection chamber 7 is directly below the monitoring end of the dust concentration detector 8.

[0021] During use, the controller 10 controls the operation of the first three-way solenoid valve 9 to connect the collection pipe 6 with the detection chamber 7, controls the passage of the solenoid valve 12 and cuts off the second three-way solenoid valve 17, and the suction fan 15 operates to suck the exhausted gas through the collection pipe 6. The exhausted gas passes through the dust concentration detector 8 for dust concentration measurement, and the measurement result is displayed on the display 5. The exhausted gas after measurement is filtered by the filtering mechanism 19 and then discharged through the exhaust pipe 11. After a preset time, the controller 10 cuts off the solenoid valve 12, controls the second three-way solenoid valve 17 to connect the main backflush pipe 13 with the first backflush branch pipe 16, controls the first three-way solenoid valve 9 to connect the first backflush branch pipe 16 with the detection chamber 7, and the air flow output from the output end of the suction fan 15 is guided through the main backflush pipe 13 and the first backflush branch pipe 16 to backflush the inside of the detection chamber 7. The backflush air flow is filtered by the filtering mechanism 19 to realize air flow circulation and perform dimensional backflush on the inside of the detection chamber 7. After backflushing for a certain period of time, the controller 10 cuts off the first three-way solenoid valve 9, controls the second three-way solenoid valve 17 to connect the main backflush pipe 13 with the second backflush branch pipe 18, and the air flow output from the output end of the suction fan 15 backflushes the detection end of the dust concentration detector 8 inside the detection chamber 7 to clean the detection end of the dust concentration detector 8, which is beneficial to the accuracy of exhaust gas dust concentration detection.

[0022] The filtering mechanism 19 includes a connection cover 20 and a housing 21. A filter element 23 is fixedly installed inside the housing 21. The housing 21 is fixedly installed at the bottom of the connection cover 20. A connecting pipe 22 is fixedly installed at the bottom of the connection cover 20 at the air inlet of the filtering mechanism 19. The connecting pipe 22 is disposed inside the filter element 23. A through hole is provided at one end of the connecting pipe 22 inside the filter element 23. The air flow flowing out of the detection chamber 7 enters the connecting pipe 22 from the air inlet of the connection cover 20, flows into the filter element 23 through the through hole provided in the connecting pipe 22, and the filter element 23 filters the flowing air flow to realize air flow filtration.

[0023] Mounting legs are provided on the connection cover 20, and the provided legs facilitate the installation of the filtering mechanism 19.

[0024] A top cover 2 is fixedly installed above the box body 3 at the top of the mounting frame 1. The top cover 2 covers the top of the box body 3 to protect the box body 3 and prevent falling objects from damaging the box body 3.

[0025] The controller 10 is electrically connected to the dust concentration detector 8, the first three-way solenoid valve 9, the solenoid valve 12, the suction fan 15, the second three-way solenoid valve 17, and the display 5 respectively.

[0026] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An exhaust gas dust detection device, comprising a mounting frame (1) and a box (3), characterized in that: The box body (3) is fixedly mounted on the mounting frame (1); a box door (4) is rotatably connected to the opening of the box body (3); a display (5) is fixedly mounted on the box door (4); a detection chamber (7), a controller (10), a suction fan (15) and a filter mechanism (19) are fixedly mounted in the box body (3); an air inlet end of the detection chamber (7) is fixedly connected to a first three-way solenoid valve (9); one end of the first three-way solenoid valve (9) is fixedly connected to a collection pipe (6); one end of the collection pipe (6) passes through the side wall of the box body (3); a dust concentration measuring instrument (8) is fixedly mounted on the top of the detection chamber (7); an air outlet end of the detection chamber (7) is connected to an air inlet at the top of the filter mechanism (19); and the filter mechanism (19) is connected to the air inlet at the top of the filter mechanism (19). The air outlet end of the mechanism (19) is fixedly connected to the input end of the suction fan (15); the output end of the suction fan (15) is fixedly connected to a three-way joint (14); the other two ends of the three-way joint (14) are respectively connected to an exhaust pipe (11) and a main recoil pipe (13); an electromagnetic valve (12) is provided on the exhaust pipe (11); the end of the main recoil pipe (13) is fixedly connected to a second three-way electromagnetic valve (17); the other two ends of the second three-way electromagnetic valve (17) are respectively fixedly connected to a first recoil branch pipe (16) and a second recoil branch pipe (18); the other end of the first recoil branch pipe (16) is connected to the first three-way electromagnetic valve (9); the other end of the second recoil branch pipe (18) is connected to the detection chamber (7).

2. The exhaust gas dust detection device according to claim 1 is characterized in that: The end of the second recoil branch pipe (18) connected to the detection chamber (7) is located directly below the monitoring end of the dust concentration measuring instrument (8).

3. The exhaust gas dust detection device according to claim 1 is characterized in that: The filter mechanism (19) comprises a connection cover (20) and a shell (21); a filter element (23) is fixedly installed in the shell (21); the shell (21) is fixedly installed at the bottom of the connection cover (20); a connection pipe (22) is fixedly installed at the bottom of the connection cover (20) at the air inlet of the filter mechanism (19); the connection pipe (22) is built into the filter element (23); and a through hole is opened at one end of the connection pipe (22) in the filter element (23).

4. The exhaust gas dust detection device according to claim 3 is characterized in that: The connection cover (20) is provided with mounting legs.

5. The exhaust gas dust detection device according to claim 1 is characterized in that: A top cover (2) is fixedly mounted on the top of the mounting frame (1) above the box body (3).

6. The exhaust gas dust detection device according to claim 1 is characterized in that: The controller (10) is electrically connected to the dust concentration measuring instrument (8), the first three-way solenoid valve (9), the solenoid valve (12), the suction fan (15), the second three-way solenoid valve (17) and the display (5), respectively.

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