Underground coal mine confined space air environment detection device

Abstract

The invention relates to the technical field of air detection devices, in particular to an underground coal mine confined space air environment detection device which comprises a shell and a gas detection sensor, one end of the shell is open, and a sealing cover is fixedly and hermetically mounted at the end of the shell through screws. The air inlet fan is started through the controller to pump air in the closed space into the air pipe, after the air is detected by the air detection sensor, if the air is detected to be qualified, the air flows to the lower end of the activated carbon plate from the flow dividing pipe, and the air is discharged into the closed space from the air outlet pipe after being filtered; if harmful gas is detected in the gas, the gas detection sensor sends a signal to the controller, the controller closes the second electromagnetic valve and opens the first electromagnetic valve and the negative pressure pump at the same time, the gas is blown into the water tank and passes through the ammonia water, then the gas is filtered by the activated carbon plate, the harmful gas is removed, and then the gas enters the closed chamber through the air outlet pipe. And gas purification is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air detection devices, in particular to an air environment detection device for a sealed space in a coal mine. BACKGROUND

[0002] In a sealed environment such as a mine, real-time detection of the gas environment is required to avoid safety accidents caused by excessive harmful gases or flammable gases. Harmful gases in a mine refer to gases that are harmful to the human body, mainly including carbon monoxide and methane.

[0003] The existing Chinese patent with publication number CN218766818U discloses a mine sealed environment multi-parameter online real-time monitoring and early warning device, which comprises a shell body, a fixed shell body is connected inside the shell body, a partition is arranged at the middle position of the inner side wall of the fixed shell body, a large-flow negative pressure pump is fixedly installed at the front position of the upper end surface of the partition, a detection circuit is fixedly installed at the middle position of the upper end surface of the partition, a Bluetooth module is installed at the rear position of the upper end surface of the partition, a signal transceiver module is arranged at the rear of the Bluetooth module on the upper end surface of the partition, and a gas chamber is arranged at the front position of the upper end surface of the fixed shell body.

[0004] Although the device has the above advantages, it still has the following defects: when the device is used, it can only detect the gas inside the mine and realize the multi-functional early warning function, but its functionality is low and it can only complete simple detection and early warning, and it cannot filter and purify the inside of the mine. In view of the above problems, a mine sealed environment multi-parameter online real-time monitoring and early warning device is provided. SUMMARY

[0005] The present application aims to provide an air environment detection device for a sealed space in a coal mine to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an air environment detection device for a sealed space in a coal mine, comprising: a shell body and a gas detection sensor, one end of the shell body is open, and a sealing cover is fixedly and sealingly installed through a screw, and an installation mechanism is arranged at the end of the shell body away from the sealing cover, and the shell body is fixed to the wall of the sealed space through the installation mechanism; A plug-in pipe is fixedly installed at the left side and the upper end of the shell body, the inner end of the plug-in pipe is in communication with the inside of the shell body, and the plug-in pipe is connected with an air inlet pipe and an air outlet pipe through sealing components; A partition is fixedly installed at the inner end of the shell. An air pipe is fixedly installed on one side of the partition, and a water tank is set on the other side. The water tank is filled with ammonia. A mesh frame is set above the water tank, and an activated carbon plate is installed inside the mesh frame. One end of the air pipe is connected to the air inlet pipe, and the other end is connected to the lower end of the water tank. A negative pressure pump and a gas detection sensor are installed on the air pipe.

[0007] Preferably, the sealing component includes an external threaded sleeve fixed to the outer end of the insertion tube and a flexible tube fixed to one end of the air inlet pipe and the air outlet pipe. The outer end of the external threaded sleeve has a limiting groove. A sealing ring is fixedly installed on the outer end of the flexible tube. A limiting ring is fixedly installed on the outer wall of the flexible tube. A threaded cap is slidably sleeved on the outer end of the flexible tube. When the inner wall of the threaded cap and the outer wall of the external threaded sleeve are threadedly connected, the inner wall of the other end of the threaded cap abuts against the limiting ring. At the same time, the flexible tube is sleeved on the outer end of the insertion tube, and the sealing ring is inserted into the limiting groove.

[0008] Preferably, a sealing sleeve is fixedly installed on the outer wall of the air inlet pipe and the air outlet pipe, and an air intake fan is fixedly installed on the inner side of the end of the air inlet pipe away from the hose.

[0009] Preferably, the mounting mechanism includes a fixing plate, a sliding frame, a reinforcing plate, and a fixing shaft. The fixing plate has a T-shaped cross-section. Several fixing holes are provided on the upper and lower sides of one end of the fixing plate. Mounting grooves are provided on the left and right sides of the other end of the fixing plate. A sliding groove is provided on the outer side of the other end of the fixing plate, and several teeth are uniformly fixedly installed.

[0010] Preferably, the sliding frame is U-shaped, with sliders fixedly installed at both ends. Both the sliders and the sliding grooves are convex. The sliders slide into the sliding grooves. A strip plate one is provided on the inner side of the sliding frame. Several tooth blocks corresponding to the teeth are evenly fixedly installed on the upper end of the strip plate one. The tooth blocks are in the shape of right-angled trapezoids. Several sliding columns are fixedly installed on the lower end of the strip plate one. The lower end of the sliding column slides through the bottom side wall of the sliding frame and is fixedly installed with a strip plate two. A pull column is fixedly installed on the lower end of the strip plate two. A force-bearing hole is opened on the outer wall of the pull column. A spring is sleeved on the outer end of the sliding column. When the spring is in a balanced state, the teeth and tooth blocks mesh with each other.

[0011] Preferably, a support plate is fixedly installed at one end of the strip plate, a connecting plate is fixedly installed at one end of the support plate, and a rubber pad is fixedly installed at the outer end of the connecting plate.

[0012] Preferably, the reinforcing plates are fixedly installed on the four rear sides of the housing. The reinforcing plates are convex, and a movable frame is slidably sleeved on the outer end of the reinforcing plate. A connecting plate is fixedly connected to the outer end of the movable frame. One end of the connecting plate is fixedly connected to a fixed shaft, and the fixed shaft can be slidably inserted into the mounting groove.

[0013] Preferably, a solenoid valve and a one-way valve are fixedly installed at the end of the air pipe near the water tank.

[0014] Preferably, a diversion tube is fixedly installed on the outer wall of the trachea, with one end of the diversion tube passing through the partition and located at the lower end of the activated carbon plate.

[0015] Preferably, a controller, a speaker, and an alarm are fixedly installed on the upper end of the housing.

[0016] Compared with the prior art, the beneficial effects of the present invention are: When gas detection is required in a confined space, the controller activates the intake fan to draw the gas from the confined space into the gas pipe. After detection by the gas detection sensor, if the detection is qualified, the gas flows from the diversion pipe to the lower end of the activated carbon plate, is filtered, and is discharged into the confined space through the outlet pipe. If harmful gas is detected in the gas, the gas detection sensor sends a signal to the controller, which closes solenoid valve two and simultaneously opens solenoid valve one and the negative pressure pump to blow the gas into the water tank, through ammonia water, and then through the activated carbon plate for filtration. After removing harmful gases, the gas enters the confined room through the outlet pipe, completing the gas purification process. Attached Figure Description

[0017] Figure 1 This is a left view of the overall structure of the present invention; Figure 2 This is a right view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the inner end structure of the housing of the present invention; Figure 4 This is a schematic diagram of the installation mechanism of the present invention; Figure 5 This is a bottom view of part of the installation mechanism of the present invention; Figure 6 This is a schematic diagram of the sliding frame structure of the present invention; Figure 7 This is a schematic diagram of the second sliding frame structure of the present invention.

[0018] In the diagram: 1. Housing; 2. Sealing cap; 3. Insert pipe; 4. External threaded sleeve; 5. Limiting groove; 6. Air inlet pipe; 7. Air outlet pipe; 8. Sealing sleeve; 9. Hose; 10. Limiting ring; 11. Sealing ring; 12. Threaded cap; 13. Intake fan; 14. Fixing plate; 15. Mounting groove; 16. Slide groove; 17. Tooth; 18. Slide frame; 19. Slider; 20. Strip plate one; 21. Tooth block; 22. Sliding column; 23. Spring; 24. Strip plate two 25. Tie column; 26. Support plate; 27. Connecting plate; 28. Rubber pad; 29. ​​Partition plate; 30. Gas pipe; 31. Negative pressure pump; 32. Solenoid valve one; 33. Check valve; 34. Diverter pipe; 35. Solenoid valve two; 36. Gas detection sensor; 37. Water tank; 38. Wire frame; 39. Activated carbon plate; 40. Controller; 41. Speaker; 42. Alarm; 43. Reinforcing plate; 44. Moving frame; 45. Connecting plate; 46. Fixed shaft. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Please see Figures 1 to 7 The present invention provides a technical solution: an air environment detection device for a closed space in a coal mine, comprising: a housing 1 and a gas detection sensor 36 (the gas detection sensor 36 is used to detect the air in a closed space in a coal mine; the gas detection sensor 36 is existing technology and will not be described in detail here). One end of the housing 1 is open and is sealed with a sealing cover 2 by screws. The end of the housing 1 away from the sealing cover 2 is provided with an installation mechanism, and the housing 1 is fixed to the wall of the sealed space by the installation mechanism, so as to facilitate the detection of the air in the closed space in the coal mine at any time.

[0021] The mounting mechanism includes a fixing plate 14, a sliding frame 18, a reinforcing plate 43, and a fixing shaft 46. The fixing plate 14 has a T-shaped cross-section. Several fixing holes are provided on the upper and lower sides of one end of the fixing plate 14. Holes are measured and drilled on the wall of the enclosed space to pre-embed threaded sleeves. Then, the fixing plate 14 is attached to the wall. Bolts pass through the fixing holes and are threadedly connected to the threaded sleeves to fix the fixing plate 14 to the wall. The left and right sides of the other end of the fixing plate 14 are provided with mounting grooves 15. The outer side of the other end of the fixing plate 14 is provided with a sliding groove 16 and several teeth 17 are evenly fixedly installed. The sliding frame 18 is U-shaped. Slider 19 is fixedly installed at both ends of the sliding frame 18. Both the slider 19 and the sliding groove 16 are convex. The slider 19 slides into the sliding groove 16, allowing the sliding frame 18 to slide on the lower side of the other end of the fixing plate 14.

[0022] A strip plate 20 is provided on the inner side of the sliding frame 18. The strip plate 20 is located below the tooth 17. Several tooth blocks 21 corresponding to the tooth 17 are evenly fixedly installed on the upper end of the strip plate 20. The tooth blocks 21 are in the shape of right trapezoids. Several sliding columns 22 are fixedly installed on the lower end of the strip plate 20. The lower end of the sliding column 22 slides through the bottom side wall of the sliding frame 18 and is fixedly installed with a strip plate 24. A pull column 25 is fixedly installed on the lower end of the strip plate 24. The outer wall of the pull column 25 has a force-bearing hole. A spring 23 is sleeved on the outer end of the sliding column 22. When the spring 23 is in a balanced state, the tooth 17 and the tooth blocks 21 bite each other. When the slide frame 18 is closed, it is limited to the lower end of the fixed plate 14. The slide frame 18 can move towards the side of the toothed block 21 with the ramp. The ramp of the toothed block 21 contacts the tooth 17. By compressing the spring 23, the toothed block 21, the first strip plate 20, the slide column 22, the second strip plate 24, and the pull column 25 move downward. The toothed block 21 can move past the tooth 17. If it is necessary to move the slide frame 18 to the other side, a drive rod needs to be taken and one end of it is inserted into the force hole at the lower end of the pull column 25. Pull the pull column 25 downward, and the first strip plate 20 and the toothed block 21 will move downward. The toothed block 21 and the tooth 17 will separate, and the slide frame 18 can be moved.

[0023] Reinforcing plates 43 are fixedly installed on the four rear sides of the housing 1. The reinforcing plates 43 are convex. A movable frame 44 is slidably sleeved on the outer end of the reinforcing plate 43. A connecting plate 45 is fixedly connected to the outer end of the movable frame 44. One end of the connecting plate 45 is fixedly connected to the fixed shaft 46. The fixed shaft 46 can be slidably inserted into the mounting groove 15. A support plate 26 is fixedly installed on one end of the strip plate 20. A connecting plate 27 is fixedly installed on one end of the support plate 26. A rubber pad 28 is fixedly installed on the outer end of the connecting plate 27. The rubber pad 28 is located on the outside of the sliding frame 18. By inserting the movable frame 44 into the outer end of the reinforcing plate 43 and sliding the movable frame 44, the fixed shaft 46 is inserted into the mounting groove 15. The sliding frame 18 is slidably connected to the lower end of the fixed plate 14 and pushed inward until the rubber pad 28 and the outer wall of the fixed shaft 46 are in close contact, thereby fixing the fixed shaft 46 and fixing the housing 1 to the wall.

[0024] A connector 3 is fixedly installed on the left side and the top of the housing 1. The inner end of the connector 3 is connected to the interior of the housing 1. The connector 3 is connected to the air inlet pipe 6 and the air outlet pipe 7 through sealing components. The sealing components include an external threaded sleeve 4 fixed to the outer end of the connector 3 and a flexible hose 9 fixed to one end of the air inlet pipe 6 and the air outlet pipe 7. A limiting groove 5 is opened at the outer end of the external threaded sleeve 4. A sealing ring 11 is fixedly installed at the outer end of the flexible hose 9. A limiting ring 10 is fixedly installed on the outer wall of the flexible hose. A threaded cover 12 is slidably sleeved on the outer end of the flexible hose 9. When the inner wall of the threaded cover 12 and the outer wall of the external threaded sleeve 4 are threadedly connected, the inner wall of the other end of the threaded cover 12 abuts against the limiting ring 10. At the same time, the flexible hose 9 is sleeved on the outer end of the connector 3, and the sealing ring 11 is inserted into the limiting groove 5 to seal the flexible hose 9 on the outer end of the connector 3.

[0025] A sealing sleeve 8 is fixedly installed on the outer wall of the air inlet pipe 6 and the air outlet pipe 7. An air intake fan 13 is fixedly installed on the inner side of the end of the air inlet pipe 6 away from the hose 9. Holes are made in the wall in advance so that the air inlet pipe 6 and the air outlet pipe 7 can pass through the holes and enter the sealed chamber. The sealing sleeve 8 seals the air inlet pipe 6 and the air outlet pipe 7 with the holes. The air intake fan 13 blows air into the air inlet pipe 6 and draws the air in the sealed chamber into the housing 1 for testing.

[0026] A partition 29 is fixedly installed at the inner end of the housing 1. A gas pipe 30 is fixedly installed on one side of the partition 29, and a water tank 37 is set on the other side. The water tank 37 is filled with ammonia water, which can react with carbon monoxide in the gas to eliminate carbon monoxide in the gas. A mesh frame 38 is set above the water tank 37, and an activated carbon plate 39 is installed inside the mesh frame 38. One end of the gas pipe 30 is connected to the air inlet pipe 6, and the other end is connected to the lower end of the water tank 37. A negative pressure pump 31 and a gas detection sensor 36 are installed on the gas pipe 30. A controller 40, a speaker 41, and an alarm 42 are fixedly installed on the upper end of the housing 1. The controller 40 is electrically connected to the air inlet fan 13, the negative pressure pump 31, the first solenoid valve 32, the second solenoid valve 35, the gas detection sensor 36, the speaker 41, and the alarm 42. All electronic devices in this device are powered by an external power source.

[0027] A solenoid valve 32 and a one-way valve 33 are fixedly installed at the end of the gas pipe 30 near the water tank 37. The one-way valve 33 allows the gas in the gas pipe 30 to enter the water tank 37, preventing the ammonia in the water tank 37 from flowing into the gas pipe 30. A diversion pipe 34 is fixedly installed on the outer wall of the gas pipe 30. One end of the diversion pipe 34 passes through the partition 29 and is located at the lower end of the activated carbon plate 39. The activated carbon plate 39 can filter harmful gases such as methane in the gas in the sealed space.

[0028] When this device is in operation, it is fixed to the wall of a sealed space by the installation mechanism, and the air inlet pipe 6 and air outlet pipe 7 are inserted into the sealed space. When it is necessary to detect the gas in the sealed space, the controller 40 starts the air intake fan 13 to draw the gas in the sealed space into the air pipe 30. After being detected by the gas detection sensor 36, if the gas is qualified, it flows from the diversion pipe 34 to the lower end of the activated carbon plate 39. After filtration, it is discharged into the sealed space from the air outlet pipe 7. If harmful gas is detected in the gas, the gas detection sensor 36 sends a signal to the controller 40. The controller 40 closes the second solenoid valve 35 and opens the first solenoid valve 32 and the negative pressure pump 31 to blow the gas into the water tank 37. The gas passes through ammonia water and then passes through the activated carbon plate 39 to remove harmful gases before entering the sealed room from the air outlet pipe 7, thus completing the gas purification.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A coal mine underground confined space air environment detection device, comprising: The shell (1) and the gas detection sensor (36), one end of the shell (1) is open, and the sealing cover (2) is fixedly and sealingly installed through the screw, characterized in that: the shell (1) is provided with a mounting mechanism at the end away from the sealing cover (2), and the shell (1) is fixed on the wall of the sealed space through the mounting mechanism; The left side and the upper end of the shell (1) are fixedly installed with the plug-in pipes (3), the inner ends of the plug-in pipes (3) are communicated with the inside of the shell (1), and the plug-in pipes (3) are connected with the air inlet pipe (6) and the air outlet pipe (7) through sealing components respectively. The inner end of the shell (1) is fixedly installed with the partition plate (29), one side of the partition plate (29) is fixedly installed with the air pipe (30), the other side is provided with the water tank (37), the water tank (37) is provided with ammonia water, the upper side of the water tank (37) is provided with the net frame (38), the net frame (38) is installed with the activated carbon plate (39), one end of the air pipe (30) is communicated with the air inlet pipe (6), the other end is communicated with the lower end of the water tank (37), and the air pipe (30) is installed with the negative pressure pump (31) and the gas detection sensor (36).

2. The coal mine underground closed space air environment detection device according to claim 1, characterized in that: The sealing component comprises an outer thread sleeve (4) fixed to the outer end of the plug-in pipe (3) and a hose (9) fixed to one end of the air inlet pipe (6) and the air outlet pipe (7), the outer end of the outer thread sleeve (4) is provided with a limiting groove (5), the outer end of the hose (9) is fixedly installed with a sealing ring (11), the outer wall of the hose (9) is fixedly installed with a limiting ring (10), the outer end of the hose (9) is slidingly sleeved with a threaded cover (12), when the inner wall of the threaded cover (12) and the outer wall of the outer thread sleeve (4) are threadedly connected, the other end of the threaded cover (12) is in contact with the limiting ring (10), and the hose (9) is sleeved on the outer end of the plug-in pipe (3), and the sealing ring (11) is inserted into the limiting groove (5).

3. The coal mine underground closed space air environment detection device according to claim 1, characterized in that: The outer wall of the air inlet pipe (6) and the air outlet pipe (7) is fixedly installed with a sealing sleeve (8), and the inner side of one end of the air inlet pipe (6) away from the hose (9) is fixedly installed with an air inlet fan (13).

4. The coal mine underground closed space air environment detection device according to claim 1, characterized in that: The mounting mechanism comprises a fixed plate (14), a sliding frame (18), a reinforcing plate (43) and a fixed shaft (46), the cross section of the fixed plate (14) is T-shaped, a plurality of fixed holes are formed in the upper side and the lower side of one end of the fixed plate (14), mounting grooves (15) are formed in the left side and the right side of the other end of the fixed plate (14), a sliding groove (16) is formed in the outer side of the other end of the fixed plate (14), and a plurality of teeth (17) are uniformly fixedly installed.

5. The coal mine underground closed space air environment detection device according to claim 4, characterized in that: The sliding frame (18) is U-shaped, both ends of the sliding frame (18) are fixedly provided with sliding blocks (19), the sliding blocks (19) and the sliding grooves (16) are convex, the sliding blocks (19) are slidably inserted into the sliding grooves (16), the inner side of the sliding frame (18) is provided with a strip-shaped plate one (20), the upper end of the strip-shaped plate one (20) is uniformly fixedly provided with a plurality of tooth blocks (21) corresponding to the teeth (17), the tooth blocks (21) are in the shape of a right trapezoid, the lower end of the strip-shaped plate one (20) is fixedly provided with a plurality of sliding columns (22), the lower end of the sliding column (22) slidably penetrates through the bottom end side wall of the sliding frame (18) and is fixedly provided with a strip-shaped plate two (24), the lower end of the strip-shaped plate two (24) is fixedly provided with a pull column (25), the outer wall of the pull column (25) is provided with a stress hole, the outer end of the sliding column (22) is sleeved with a spring (23), when the spring (23) is in the balanced state, the teeth (17) and the tooth blocks (21) are engaged with each other.

6. The coal mine underground closed space air environment detection device according to claim 5, characterized in that: One end of the strip-shaped plate one (20) is fixedly provided with a supporting plate (26), one end of the supporting plate (26) is fixedly provided with a connecting plate (27), the outer end of the connecting plate (27) is fixedly provided with a rubber pad (28).

7. The coal mine underground closed space air environment detection device according to claim 4, characterized in that: The reinforcing plates (43) are fixedly installed at the rear end of the four sides of the shell (1) respectively, the reinforcing plates (43) are convex, the outer end of the reinforcing plate (43) is slidably sleeved with a moving frame (44), the outer end of the moving frame (44) is fixedly connected with a connecting plate (45), one end of the connecting plate (45) and the fixed shaft (46) is fixedly connected, and the fixed shaft (46) is slidably inserted into the installation slot (15).

8. The coal mine underground closed space air environment detection device according to claim 1, characterized in that: The air pipe (30) is fixedly provided with the electromagnetic valve one (32) and the one-way valve (33) at one end close to the water tank (37) respectively.

9. The coal mine underground closed space air environment detection device according to claim 1, characterized in that: The outer wall of the air pipe (30) is fixedly provided with a shunt pipe (34), one end of the shunt pipe (34) penetrates through the partition plate (29) and is located at the lower end of the activated carbon plate (39).

10. The coal mine underground closed space air environment detection device according to claim 1, characterized in that: The upper end of the shell (1) is fixedly provided with a controller (40), a loudspeaker (41) and an alarm (42) respectively.

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