Smoke monitoring device for preventing coal mine fire

Abstract

The utility model provides a smoke monitoring device for preventing coal mine fire, which comprises a mounting plate, the bottom end of the mounting plate is fixedly connected with a monitoring box, a vacuum pump is fixedly mounted in the monitoring box, an air inlet is embedded in the bottom end of the monitoring box, and an air outlet is embedded in the top end of the monitoring box. The air inlet end of the vacuum pump is fixedly communicated with the air inlet, the air outlet end of the vacuum pump is fixedly communicated with the air outlet through an air outlet pipe, a smoke detector is fixedly installed at the inner side end of the monitoring box, and a probe of the smoke detector is located in the air outlet pipe. The monitoring box is internally provided with the vacuum pump, air or smoke in a mine is pumped into the air outlet pipe through the vacuum pump, the air in the air outlet pipe is monitored through the probe of the smoke detector, and alarm sound and early warning light are given out through the buzzer and the early warning lamp, so that field workers can find the air or smoke in time, and early warning is timely.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine safety facilities, and in particular relates to a smoke monitoring device for preventing coal mine fires. Background Art

[0002] Mine fire is one of the major disasters that threatens people's property and life safety, causing huge economic losses and serious social impacts. In the actual fire process, smoke is often generated before the flame, so monitoring the smoke in coal mines can provide timely early warning of fires.

[0003] Existing smoke monitoring devices guide air or smoke through an air inlet pipe to make it flow to the smoke sensor, but the air in the mine is seriously polluted and contains a lot of dust. The smoke sensor is easily contaminated by dust, resulting in reduced sensitivity or failure. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a smoke monitoring device for preventing coal mine fires in view of the deficiencies of the above-mentioned prior art. The smoke monitoring device has a simple structure, is easy to install, has a good monitoring effect, can provide timely warning, and can be promoted and applied.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a smoke monitoring device for preventing coal mine fires, characterized in that it includes a mounting plate, the bottom end of the mounting plate is fixedly connected to a monitoring box, a vacuum pump is fixedly installed in the monitoring box, an air inlet is embedded in the bottom end of the monitoring box, an air outlet is embedded in the top end of the monitoring box, the air inlet end of the vacuum pump is fixedly connected to the air inlet, the air outlet end of the vacuum pump is fixedly connected to the air outlet through an outlet pipe, a smoke detector is fixedly installed on the inner side end of the monitoring box, and the probe of the smoke detector is located in the outlet pipe.

[0006] The vacuum pump draws the air or smoke in the mine through the air inlet to the air outlet, and the probe of the smoke detector monitors the air or smoke in the outlet pipe to provide an early warning.

[0007] The bottom end of the monitoring box is fixedly connected to an annular plate through a connecting column, a filter is embedded in the center of the annular plate, and an annular filter is fixedly installed on the upper edge of the top of the annular plate. The air or smoke in the mine can flow into the monitoring box through the two filters, which has good ventilation and is conducive to timely warning.

[0008] Preferably, three mounting holes are provided on the mounting plate, a screw is movably installed in the mounting hole, a sleeve is fixedly installed on the mounting plate, the screw is movably arranged in the sleeve, an expansion plate is provided at the top end of the sleeve, a conical head is provided at the top end of the screw, the maximum diameter of the conical head is equal to the outer diameter of the sleeve, a nut is threadedly connected at the bottom of the screw, and a flat washer and a spring washer are mounted on the screw.

[0009] After drilling a hole in the top wall or side wall of the mine, insert the sleeve into the hole, and then turn the nut to rotate the screw, and the screw moves relative to the sleeve, driving the conical head to be stuck between the expansion pieces. The expansion pieces are squeezed into the hole by the conical head, so that the sleeve is stuck in the hole, completing the installation. The operation is simple and the installation is stable.

[0010] Preferably, a buzzer and a warning light are fixedly mounted on the outer end of the monitoring box, and a controller is fixedly mounted inside the monitoring box, and the controller is electrically connected to the smoke detector, the buzzer and the warning light.

[0011] When the smoke detector detects smoke, it sends the smoke concentration signal to the controller. After the controller determines that the smoke concentration exceeds the standard, the controller controls the buzzer and the warning light to start. The buzzer sounds an alarm and the warning light emits flashing colored light, which serves as a warning to facilitate on-site staff to discover it in time.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model is provided with a vacuum pump in the monitoring box, through which the air or smoke in the mine is pumped into the exhaust pipe, the air in the exhaust pipe is monitored by the probe of the smoke detector, and the buzzer and the warning light are used to emit an alarm sound and a warning light, so that the on-site staff can find out in time and give a warning in time.

[0014] 2. The utility model is provided with a sleeve and a screw on the mounting plate. The mounting plate is installed in the mine through the cooperation of the expansion sheet and the conical head. The operation is simple and the installation is stable.

[0015] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a front view of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the annular plate in the utility model.

[0019] Description of reference numerals:

[0020] 1—Mounting plate; 2—Monitoring box; 3—Vacuum pump;

[0021] 4—air inlet; 5—air outlet; 6—air outlet pipe;

[0022] 7—smoke detector; 8—connecting column; 9—annular plate;

[0023] 10—filter screen; 11—screw; 12—sleeve;

[0024] 13—Nut; 14—Buzzer; 15—Warning light;

[0025] 16—Controller. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] like Figures 1 to 3 As shown, the utility model provides a smoke monitoring device for preventing coal mine fires, including a mounting plate 1, a monitoring box 2 is fixedly connected to the bottom end of the mounting plate 1, a vacuum pump 3 is fixedly installed in the monitoring box 2, an air inlet 4 is embedded in the bottom end of the monitoring box 2, an air outlet 5 is embedded in the top end of the monitoring box 2, the air inlet end of the vacuum pump 3 is fixedly connected to the air inlet 4, the air outlet end of the vacuum pump 3 is fixedly connected to the air outlet 5 through an air outlet pipe 6, a smoke detector 7 is fixedly installed on the inner side end of the monitoring box 2, and the probe of the smoke detector 7 is located in the air outlet pipe 6.

[0029] The vacuum pump 3 pumps the air or smoke in the mine through the air inlet 4 to the air outlet 5, and the probe of the smoke detector 7 monitors the air or smoke in the air outlet pipe 6, thereby giving an early warning.

[0030] The bottom end of the monitoring box 2 is fixedly connected to a ring plate 9 through six connecting columns 8, a filter screen 10 is embedded in the center of the ring plate 9, and a ring filter screen 10 is fixedly installed on the upper edge of the top of the ring plate 9. The air or smoke in the mine can flow into the monitoring box 2 through the two filters 10, which has good ventilation and is conducive to timely warning.

[0031] In this embodiment, three mounting holes are provided on the mounting plate 1, and a screw 11 is movably installed in the mounting hole. A sleeve 12 is fixedly installed on the mounting plate 1, and the screw 11 is movably arranged in the sleeve 12. An expansion plate is provided at the top of the sleeve 12, and a conical head is provided at the top of the screw 11. The maximum diameter of the conical head is equal to the outer diameter of the sleeve 12. A nut 13 is threadedly connected to the bottom of the screw 11, and a flat washer and a spring washer are mounted on the screw 11.

[0032] After drilling a hole in the top wall or side wall of the mine, insert the sleeve 12 into the hole, and then rotate the nut 13 to rotate the screw 11, and the screw 11 moves relative to the sleeve 12, driving the conical head to be stuck between the expansion pieces. The expansion pieces are squeezed into the hole by the conical head, so that the sleeve 12 is stuck in the hole, and the installation is completed. The operation is simple and the installation is stable.

[0033] In this embodiment, a buzzer 14 and a warning light 15 are fixedly installed on the outer end of the monitoring box 2, and a controller 16 is fixedly installed inside the monitoring box 2. The controller 16 is electrically connected to the smoke detector 7, the buzzer 14 and the warning light 15.

[0034] When the smoke detector 7 detects smoke, it sends a smoke concentration signal to the controller 16. After the controller 16 determines that the smoke concentration exceeds the standard, the controller 16 controls the buzzer 14 and the warning light 15 to start. The buzzer 14 emits an alarm sound and the warning light 15 emits a flashing colored light, which serves as a warning so that the on-site staff can find it in time.

[0035] When in use, after drilling a hole in the top wall or side wall of the mine, insert the sleeve 12 into the hole, and then rotate the nut 13 to rotate the screw 11, and the screw 11 moves relative to the sleeve 12, driving the conical head to be stuck between the expansion pieces. The expansion pieces are squeezed into the hole by the conical head, so that the sleeve 12 is stuck in the hole, and the installation is completed.

[0036] The vacuum pump 3 pumps the air or smoke in the mine through the air inlet 4 to the air outlet 5, and the probe of the smoke detector 7 monitors the air or smoke in the air outlet pipe 6.

[0037] After the smoke detector 7 detects smoke, it sends a smoke concentration signal to the controller 16. After the controller 16 determines that the smoke concentration exceeds the standard, the controller 16 controls the buzzer 14 and the warning light 15 to start. The buzzer 14 emits an alarm sound and the warning light 15 emits a flashing colored light, which serves as a warning so that the on-site staff can find it in time.

[0038] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any way. Any simple modification, change and equivalent change made to the above embodiment according to the essence of the utility model technology still falls within the protection scope of the technical solution of the utility model.

Claims

1. A smoke monitoring device for preventing coal mine fires, characterized in that: It comprises a mounting plate (1), the bottom end of the mounting plate (1) is fixedly connected to a monitoring box (2), a vacuum pump (3) is fixedly installed in the monitoring box (2), an air inlet (4) is embedded in the bottom end of the monitoring box (2), an air outlet (5) is embedded in the top end of the monitoring box (2), the air inlet end of the vacuum pump (3) is fixedly connected to the air inlet (4), the air outlet end of the vacuum pump (3) is fixedly connected to the air outlet (5) via an air outlet pipe (6), a smoke detector (7) is fixedly installed on the inner side end of the monitoring box (2), and the probe of the smoke detector (7) is located in the air outlet pipe (6); The bottom end of the monitoring box (2) is fixedly connected to an annular plate (9) via a connecting column (8), a filter screen (10) is embedded at the center of the annular plate (9), and an annular filter screen (10) is fixedly installed at the upper edge of the top end of the annular plate (9).

2. A smoke monitoring device for preventing coal mine fires according to claim 1, characterized in that: The mounting plate (1) is provided with a mounting hole, a screw (11) is movably mounted in the mounting hole, a sleeve (12) is fixedly mounted on the mounting plate (1), the screw (11) is movably mounted in the sleeve (12), an expansion sheet is provided at the top end of the sleeve (12), a conical head is provided at the top end of the screw (11), the maximum diameter of the conical head is equal to the outer diameter of the sleeve (12), and a nut (13) is threadedly connected to the bottom of the screw (11).

3. A smoke monitoring device for preventing coal mine fires according to claim 1, characterized in that: The screw rod (11) is sleeved with a flat washer and a spring washer.

4. A smoke monitoring device for preventing coal mine fires according to claim 1, characterized in that: A buzzer (14) and a warning light (15) are fixedly mounted on the outer end of the monitoring box (2), and a controller (16) is fixedly mounted inside the monitoring box (2), wherein the controller (16) is electrically connected to the smoke detector (7), the buzzer (14) and the warning light (15).

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