Device for detecting oxygen content of front chamber of multi-purpose furnace to guarantee production safety

Abstract

The utility model discloses a device for detecting the oxygen content of a multi-purpose furnace front chamber to guarantee production safety, which comprises a device body, the device body comprises a PLC (programmable logic controller), a measuring device, a detecting device and a discharging device, the PLC is positioned on the front side of the measuring device, the detecting device is mounted at the left end of the measuring device, and the discharging device is positioned on the front side of the measuring device. The discharging device is mounted at the right end of the discharging device; the detection device comprises a first pipeline, a second pipeline and a concentrated pipeline, the first pipeline and the second pipeline are both installed at the left end of the concentrated pipeline, the concentrated pipeline is of a T-shaped structure, a first electromagnetic valve is installed in the first pipeline, and a second electromagnetic valve is installed in the second pipeline. The device for detecting the oxygen content of the front chamber of the multi-purpose furnace to guarantee the production safety can effectively guarantee the safety and the stability of discharging of the rear chamber of the heating furnace in a detection and monitoring mode.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a device for detecting the oxygen content in a front chamber of a multi-purpose furnace to ensure production safety. Background Art

[0002] Since the working atmosphere in the heating furnace contains a large amount of flammable gas, once the mixing ratio with oxygen reaches the explosion range, gas explosion or other dangerous situations are very likely to occur. When the rear chamber of the heating furnace is discharged to the front chamber, once the front chamber contains more than a certain amount of oxygen, it is very easy to reach an explosion ratio with the working atmosphere of the rear chamber. Therefore, the premise of discharging materials from the rear chamber is that the front chamber is ventilated. Ventilation refers to the use of protective atmosphere or nitrogen that flows through the rear chamber into the front chamber to replace the gas in the front chamber, so that the oxygen content in the front chamber is reduced to a safe level. At present, a timed ventilation method is used to infer that the oxygen content has been reduced to a safe level.

[0003] The existing heating furnace has the following defects:

[0004] In the existing heating furnace, insufficient gas volume flows into the front chamber from the rear chamber or other reasons result in the oxygen content in the front chamber not being reduced to a safe value within the set ventilation time, which can easily cause explosions or safety accidents. Therefore, a solution is needed. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies of the prior art, the utility model provides a device for detecting the oxygen content in the front chamber of a multi-purpose furnace to ensure production safety, so as to solve the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a device for detecting the oxygen content in the front chamber of a multi-purpose furnace to ensure production safety, comprising a device body, the device body comprising a PLC controller, a measuring device, a detecting device and a discharging device, the PLC controller is located in front of the measuring device, the detecting device is installed at the left end of the measuring device, and the discharging device is installed at the right end of the discharging device; the detecting device comprises a first pipeline, a second pipeline and a centralized pipeline, the first pipeline and the second pipeline are both installed at the left end of the centralized pipeline, the centralized pipeline is in a T-shaped structure, a solenoid valve 1 is installed in the first pipeline, and a solenoid valve 2 is installed in the second pipeline.

[0009] Preferably, the measuring device comprises a measuring chamber and a Lamda probe, wherein the Lamda probe is installed in the measuring chamber, and the Lamda probe is connected to a PLC controller via a connecting line.

[0010] Preferably, the discharging device comprises an air pump, a flow meter and a delivery pipe, the air pump is connected to the flow meter through the delivery pipe, and the flow meter is connected to the measuring chamber through the delivery pipe.

[0011] (III) Beneficial effects

[0012] The utility model provides a device for detecting the oxygen content in the front chamber of a multi-purpose furnace to ensure production safety. It has the following beneficial effects:

[0013] This device for detecting the oxygen content in the front chamber of a multi-purpose furnace to ensure production safety can effectively ensure the safety and stability of the discharge from the rear chamber of the heating furnace through detection and monitoring. When in use, the gas in the front chamber is pumped into the measuring chamber. Within the specified time, if the oxygen content is detected to be lower than the safe value, the discharge from the rear chamber can be carried out. If the oxygen content does not reach the safe value, an alarm will be issued to prohibit the discharge from the rear chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] In the figure, 1. device body; 2. PLC controller; 3. measuring device; 4. detection device; 5. discharging device; 6. measuring room; 7. Lamda probe; 8. first pipeline; 9. second pipeline; 10. centralized pipeline; 11. solenoid valve 1; 12. solenoid valve 2; 13. air pump; 14. flow meter; 15. delivery pipe. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 , the utility model embodiment provides a technical solution: a device for detecting the oxygen content in the front chamber of a multi-purpose furnace to ensure production safety, comprising a device body 1, the device body 1 comprising a PLC controller 2, a measuring device 3, a detecting device 4 and a discharging device 5, the PLC controller 2 is located in front of the measuring device 3, the detecting device 4 is installed at the left end of the measuring device 3, and the discharging device 5 is installed at the right end of the discharging device 5;

[0018] The problem is solved. The detection device 4 includes a first pipeline 8, a second pipeline 9 and a centralized pipeline 10. The first pipeline 8 and the second pipeline 9 are both installed at the left end of the centralized pipeline 10. The centralized pipeline 10 is in a T-shaped structure. A solenoid valve 11 is installed in the first pipeline 8, and a solenoid valve 2 12 is installed in the second pipeline 9. When in use, when it is necessary to measure the oxygen content in the front chamber, start the sampling pump and open the solenoid valve 11 at the same time to draw air into the measuring chamber 6. The PLC controller 2 detects whether the oxygen content measured by the Lamda probe 7 is 21%, so as to determine whether the Lamda probe 7 is normal. When the oxygen content is measured to be 21%, the solenoid valve 11 is closed and the solenoid valve 2 12 is opened to draw the gas in the front chamber into the measuring chamber 6.

[0019] Furthermore, the measuring device 3 includes a measuring chamber 6 and a Lamda probe 7. The Lamda probe 7 is installed in the measuring chamber 6. The Lamda probe 7 is connected to the PLC controller 2 via a connecting line. The PLC controller 2 receives detection information from the Lamda probe 7, thereby facilitating timely operation.

[0020] Specifically, the discharging device 5 includes an air pump 13, a flow meter 14 and a conveying pipe 15. The air pump 13 is connected to the flow meter 14 through the conveying pipe 15, and the flow meter 14 is connected to the measuring chamber 6 through the conveying pipe 15. When the rear chamber is discharging, the air pump 13 is started; the air pump 13 draws the material out of the rear chamber through the conveying pipe 15, and then the material passes through the flow meter 14, the flow meter 14 records the material flow, and finally discharged into the measuring chamber 6 for measurement.

[0021] Working principle: During operation, when it is necessary to measure the oxygen content in the front chamber, start the sampling pump and open the electromagnetic valve 11 at the same time to draw air into the measuring chamber 6. The PLC controller 2 detects whether the oxygen content measured by the Lamda probe 7 is 21% to determine whether the Lamda probe 7 is normal. When the oxygen content is measured to be 21%, close the electromagnetic valve 11 and open the electromagnetic valve 2 12 to draw the front chamber gas into the measuring chamber 6. Within the specified time, if the oxygen content is detected to be lower than the safe value, the discharge of the rear chamber can be carried out. If the oxygen content does not reach the safe value, an alarm is issued to prohibit the discharge of the rear chamber.

[0022] The utility model includes 1. device body; 2. PLC controller; 3. measuring device; 4. detection device; 5. discharging device; 6. measuring chamber; 7. Lamda probe; 8. first pipeline; 9. second pipeline; 10. centralized pipeline; 11. solenoid valve 1; 12. solenoid valve 2; 13. air pump; 14. flow meter; 15. delivery pipe. All the components are universal standard parts or components known to the technical personnel in this field, and their structures and principles can be known to the technical personnel in this field through technical manuals or through conventional experimental methods. The problem solved by the utility model is that the amount of gas flowing into the front chamber of the existing heating furnace rear chamber is insufficient or other reasons result in the oxygen content in the front chamber not being reduced to the safe value within the set ventilation time, which can easily cause explosion or safety accidents. The utility model can effectively ensure the safety and stability of the discharging of the heating furnace rear chamber through detection and monitoring through the combination of the above components.

[0023] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for detecting the oxygen content in the front chamber of a multi-purpose furnace to ensure production safety, characterized in that: The device comprises a device body (1), wherein the device body (1) comprises a PLC controller (2), a measuring device (3), a detection device (4) and a discharging device (5), wherein the PLC controller (2) is located in front of the measuring device (3), the detection device (4) is installed at the left end of the measuring device (3), and the discharging device (5) is installed at the right end of the discharging device (5); The detection device (4) comprises a first pipeline (8), a second pipeline (9) and a centralized pipeline (10); the first pipeline (8) and the second pipeline (9) are both installed at the left end of the centralized pipeline (10); the centralized pipeline (10) is in a T-shaped structure; a first solenoid valve (11) is installed in the first pipeline (8); and a second solenoid valve (12) is installed in the second pipeline (9).

2. The device for detecting oxygen content in the antechamber of a multi-purpose furnace to ensure production safety according to claim 1, characterized in that: The measuring device (3) comprises a measuring chamber (6) and a Lamda probe (7), wherein the Lamda probe (7) is installed in the measuring chamber (6), and the Lamda probe (7) is connected to the PLC controller (2) via a connecting line.

3. The device for detecting oxygen content in the antechamber of a multi-purpose furnace to ensure production safety according to claim 2, characterized in that: The discharging device (5) comprises an air pump (13), a flow meter (14) and a delivery pipe (15); the air pump (13) is connected to the flow meter (14) via the delivery pipe (15); and the flow meter (14) is connected to the measuring chamber (6) via the delivery pipe (15).

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