An underground gas concentration inspection device

Abstract

The application discloses a kind of mine gas concentration inspection devices, including guide rail, is installed in the top of roadway, and along the extension direction of roadway arrangement;Mobile device, is installed on the guide rail, can move along the guide rail;Detection device, is fixed in the lower end of the mobile device, the lower end of the detection device is fixed with arc-shaped frame, the shape of the arc-shaped frame is adapted to the top of roadway, the tail of the detection device is provided with negative pressure fan with its communication;Drive assembly, is installed on the arc-shaped frame, and can reciprocatingly move along the extension direction of the arc-shaped frame, the lower end of the drive assembly is provided with sampling assembly, and the sampling assembly is communicated with the detection device by hose;Control module, in the interior of the mobile device, can be coordinated control each component and carry out segmented multi-point sampling detection, and early warning light, it is located in the front end of the detection device, can carry out sound-light mixed early warning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas inspection equipment, in particular to a mine gas concentration inspection device. BACKGROUND

[0002] In the mine operation, the gas concentration is an important index to ensure the safety of operation, because the gas density is smaller than air, so it is usually distributed above the roadway, the traditional gas concentration detection method mainly depends on manual detection, this method is not only inefficient, but also due to the fatigue and negligence of personnel may lead to misjudgment and missed detection of gas concentration, due to the relatively humid in the roadway and the distribution of gas is affected by the structure size of the roadway and wind speed and other factors, as well as the distribution of air dust and other impurities, resulting in the existing gas concentration detection device in the process of use, detection precision is not high, poor stability, limited test range and other problems.

[0003] Therefore, it is necessary to provide a mine gas concentration inspection device to solve the problems mentioned in the background. SUMMARY

[0004] To achieve the above purpose, the present application provides the following technical scheme: a mine gas concentration inspection device, comprising: a guide rail installed on the top of the roadway and arranged along the extension direction of the roadway;

[0005] A moving device is installed on the guide rail and can move along the guide rail;

[0006] A detection device is fixedly arranged at the lower end of the moving device, the lower end of the detection device is fixedly arranged with an arc-shaped frame, the shape of the arc-shaped frame is adapted to the top of the roadway, and the tail of the detection device is provided with a negative pressure fan in communication therewith;

[0007] A drive assembly is installed on the arc-shaped frame and can reciprocate along the extension direction of the arc-shaped frame, the lower end of the drive assembly is provided with a sampling assembly, and the sampling assembly is in communication with the detection device through a hose;

[0008] A control module is located in the interior of the moving device and can coordinate and control each component to perform segmented multi-point sampling detection, and

[0009] A warning light is located at the front end of the detection device and can perform sound and light mixed warning.

[0010] As a preferred technical scheme of the present application, the arc-shaped frame comprises:

[0011] A frame body is symmetrically fixedly arranged at the lower end of the detection device, arc-shaped limiting grooves are formed through the two side surfaces of the extension direction of the frame body, the inner arc surfaces of the frame body are uniformly provided with teeth, and limiters are arranged at the two ends of the extension direction of the frame body.

[0012] As a preferred technical scheme of the present application, the driving assembly comprises:

[0013] The driving seat is a U-shaped plate structure, and is clamped below the inner arc surface of the frame body. Three sets of limiting shafts are rotatably arranged on the two inner sides of the driving seat at the limiting grooves. A driving gear is rotatably arranged above the inner bottom surface of the driving seat. The driving gear is engaged with the teeth. The driving gear is driven by an external motor.

[0014] As a preferred technical scheme of the present application, the sampling assembly comprises:

[0015] The sampling cover is a prismatic shell structure with a small upper part and a large lower part. A plurality of arc-shaped air inlet grooves are formed on the peripheral side surface of the sampling cover. A filter bag is adhered to the inner wall of the sampling cover at the upper end thereof. A square plate is arranged at the bottom of the filter bag. A long rod is coaxially and fixedly arranged at the upper end of the square plate. The long rod is slidably extended into the driving seat.

[0016] As a preferred technical scheme of the present application, an oval-shaped guide groove is formed at one end of the driving gear. A sliding column is slidably arranged in the guide groove. The outer end of the sliding column is rotatably arranged at the upper end of the long rod.

[0017] As a preferred technical scheme of the present application, the lower part of the filter bag is a sealing surface. The sealing surface is made of elastic and wear-resistant material. The sealing surface is higher than the upper end surface of the square plate during sampling.

[0018] As a preferred technical scheme of the present application, the bottom surface of the sampling cover is two hinged plates which can be rotatably opened. A tension spring is arranged between the upper end of each hinged plate and the hinged side surface thereof. An arc-shaped push rod is further hingedly arranged above each tension spring. The outer arc surface of the push rod is arranged upward.

[0019] As a preferred technical scheme of the present application, a temperature sensor is arranged at the front end of the detection device. A water vapor separation device is further arranged in the detection device.

[0020] As a preferred technical scheme of the present application, the upper end surface of the hinged plate is an inclined surface.

[0021] Compared with the prior art, the present application provides a mine gas concentration inspection device, which has the following advantages:

[0022] Advantages:

[0023] In the present application, by setting the moving device, the detection device and the sampling assembly, etc., the gas in the roadway is sampled and detected in multiple points in sections, the detection range and detection accuracy are improved, at the same time, the sectional distance is controlled in real time through the change of the roadway temperature, so as to avoid missing detection and misjudgment, and the arc-shaped frame which is adapted to the top of the roadway is set, so that the sampling assembly can move and detect in multiple points along the lower part of the arc-shaped surface of the top of the roadway, and the detection accuracy is further improved, and the detection result error caused by single sampling track or manual sampling is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a whole structure schematic view of a mine gas concentration inspection device;

[0025] Fig. 2 It is an arc-shaped frame and drive assembly structure schematic view of a mine gas concentration inspection device;

[0026] Fig. 3 It is a sampling assembly structure schematic view of a mine gas concentration inspection device;

[0027] In the figure: 1, guide rail; 2, moving device; 3, detection device; 4, negative pressure fan; 5, arc-shaped frame; 51, frame body; 52, limiting groove; 53, gear; 54, limiter; 6, drive assembly; 61, drive seat; 62, limiting shaft; 63, drive gear; 631, guide groove; 632, slide column; 7, sampling assembly; 71, sampling cover; 72, air inlet groove; 73, filter bag; 74, square plate; 75, long rod; 76, hinge plate; 77, push rod; 78, tension spring; 731, sealing surface; 8, early warning lamp; 9, temperature sensor. DETAILED DESCRIPTION

[0028] Please refer to Figs. 1-3 The present application provides a mine gas concentration inspection device, which comprises:

[0029] The guide rail 1 is installed on the top of the roadway and arranged along the extension direction of the roadway;

[0030] The moving device 2 is installed on the guide rail 1 and can move along the guide rail 1;

[0031] The detection device 3 is fixedly arranged at the lower end of the moving device 2, the lower end of the detection device 3 is fixedly arranged with the arc-shaped frame 5, the shape of the arc-shaped frame 5 is adapted to the top of the roadway, and the tail part of the detection device 3 is provided with the negative pressure fan 4 in communication therewith;

[0032] The drive assembly 6 is installed on the arc-shaped frame 5 and can reciprocate along the extension direction of the arc-shaped frame 5, the lower end of the drive assembly 6 is provided with the sampling assembly 7, and the sampling assembly 7 is communicated with the detection device 3 through a hose;

[0033] A control module is located inside the mobile device 2, which can coordinate the control of each component to perform segmented multi-point sampling detection, and

[0034] A warning light 8 is located at the front end of the detection device 3, which can perform sound and light mixed warning.

[0035] It needs to be explained that the control module sets the segmented distance length of the mobile device 2, and stops moving when every set distance is moved, and the multi-point gas concentration detection of the roadway cross section is performed. The suction force of the sampling assembly 7 is provided by the negative pressure fan 4 to suck the gas into the detection device 3 for detection, and then the driving assembly 6 moves along the arc-shaped frame 5 to perform interval sampling detection, which improves the detection accuracy.

[0036] In this embodiment, the arc-shaped frame 5 comprises:

[0037] The frame body 51 is symmetrically and fixedly arranged at the lower end of the detection device 3, and the two side surfaces of the extension direction of the frame body 51 are provided with arc-shaped limiting grooves 52, and the inner arc surfaces of the frame body 51 are uniformly provided with teeth 53, and the two ends of the extension direction of the frame body 51 are provided with limiters 54.

[0038] In this embodiment, the driving assembly 6 comprises:

[0039] The driving seat 61 is a U-shaped plate structure, which is clamped below the inner arc surface of the frame body 51, and three sets of limiting shafts 62 are rotatably arranged on the two inner side surfaces of the driving seat 61 at the limiting grooves 52, and a driving gear 63 is rotatably arranged above the inner bottom surface of the driving seat 61, the driving gear 63 is engaged with the teeth 53, and the driving gear 63 is driven by an external motor.

[0040] It needs to be explained that the external motor drives the driving seat 61 to move along the arc-shaped frame 5, so that it can move along the lower part of the top arc surface of the roadway to perform multi-point detection, improve the richness of sampling, and avoid missing detection caused by single trajectory sampling.

[0041] In this embodiment, the sampling assembly 7 comprises:

[0042] The sampling cover 71 is a prismatic shell structure with small upper and large lower, a plurality of arc-shaped air inlets 72 are formed on the peripheral surface of the sampling cover 71, a filter bag 73 is adhered to the inner wall of the sampling cover 71 at the upper end of the inside, a square plate 74 is arranged at the bottom of the filter bag 73, a long rod 75 is coaxially and fixedly arranged at the upper end of the square plate 74, and the long rod 75 can be slid up and down to extend into the driving seat 61.

[0043] Need to explain, the filter bag 73 is made of high elasticity polyester material, has good elasticity and tensile property, the filter bag 73 is opened by the setting of the square plate 74 to guarantee that it filters the coal dust and other impurities in the air, the air inlet groove 72 is arranged on the circumferential side of the sampling cover 71, so that the gas enters the sampling cover 71 from the circumferential side of the sampling point, the range of each sampling is increased, and the reliability and authenticity of data are improved.

[0044] In the embodiment, the driving gear 63 is provided with an oval guide groove 631 at one end, and a sliding column 632 is slidably arranged in the guide groove 631, and the outer end of the sliding column 632 is rotatably arranged at the upper end of the long rod 75.

[0045] That is, after each sampling of the sampling cover 71, the long rod 75 drives the square plate 74 to reciprocatingly move up and down under the guidance of the guide groove 631 during the movement of the sampling cover 71, the filter bag 73 is vibrated, the coal dust and other impurities filtered thereon are shaken down and fall on the bottom of the sampling cover 71.

[0046] In the embodiment, the lower part of the filter bag 73 is a sealing surface 731, the sealing surface 731 is made of elastic wear-resistant material, and the sealing surface 731 is higher than the upper end surface of the square plate 74 during sampling. The sealing surface 731 is arranged to avoid damaging the filter hole during the up and down movement of the square plate 74.

[0047] In the embodiment, the bottom surface of the sampling cover 71 is two hinged plates 76 that can be rotatably opened, a pull spring 78 is arranged between the upper end of each hinged plate 76 and the hinged side surface thereof, an arc-shaped push rod 77 is further hingedly arranged above each pull spring 78, and the outer arc surface of the push rod 77 is arranged upward.

[0048] Need to explain, during static sampling, the pull spring 78 can pull up the hinged plate 76 to close the bottom of the sampling cover 71. When the coal dust and other impurities on the filter bag 73 are shaken off (when moving to the next sampling point downward), the square plate 74 moves up and down to push the push rod 77 to open the hinged plate 76, and the falling impurities are directly discharged when the hinged plate 76 is opened, so that the coal dust and other impurities are not accumulated in the sampling cover 71, automatic cleaning is realized, and it should be noted that the short axis side of the guide groove 631 faces downward during each fixed-point sampling, so that the bottom of the sampling cover 71 is closed.

[0049] In the embodiment, the front end of the detection device 3 is provided with a temperature sensor 9, and a water-gas separation device is further arranged in the detection device 3.

[0050] It needs to be explained that with the increase of gas distribution amount, the temperature in the mine tunnel will be increased, the segmented distance length of the moving device 2 is adjusted through the monitoring of the temperature of the mine tunnel, when the temperature is increased, the segmented distance is reduced, otherwise, the segmented distance is increased, to avoid missing detection, the water in the gas is removed through the water-gas separation device, to avoid affecting the gas sensor, through the stability of the device.

[0051] In the embodiment, the upper end surface of the hinge plate 76 is provided as an inclined surface. It is convenient to discharge the impurities such as coal dust.

[0052] In the specific implementation, the device is installed on the guide rail, and then each component is controlled by the control module to segmentally and multi-pointedly sample and detect the roadway. When moving to the segmented distance, the movement is stopped, the sampling cover is controlled by the driving assembly to multi-point sample along the arc-shaped frame, the temperature of the roadway is monitored in real time, and the segmented distance is adaptively adjusted according to the temperature feedback, so that the reliability and accuracy of the detection data of the device are improved, and misjudgment and missing detection are avoided.

[0053] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical scheme and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A mine gas concentration monitoring device, characterized in that: include: The guide rail (1) is installed on the top of the tunnel and is arranged along the extension direction of the tunnel; The moving device (2) is mounted on the guide rail (1) and can move along the guide rail (1); The detection device (3) is fixed at the lower end of the mobile device (2). The lower end of the detection device (3) is fixed with an arc frame (5). The shape of the arc frame (5) is adapted to the top of the roadway. The tail of the detection device (3) is connected to it and a negative pressure fan (4) is installed. The drive assembly (6) is mounted on the arc frame (5) and can reciprocate along the extension direction of the arc frame (5). A sampling assembly (7) is provided at the lower end of the drive assembly (6). The sampling assembly (7) is connected to the detection device (3) through a hose. The control module, located inside the mobile device (2), is capable of coordinating and controlling various components to perform segmented multi-point sampling and detection. Warning light (8), located at the front end of the detection device (3), is capable of providing a combined sound and light warning; The arc-shaped frame (5) includes: The frame (51) is symmetrically fixed at the lower end of the detection device (3). The two sides of the frame (51) extending in the direction of extension are provided with arc-shaped limiting grooves (52). The inner arc surface of the frame (51) is evenly provided with teeth (53). Limiters (54) are provided at both ends of the frame (51) extending in the direction of extension. The driving component (6) includes: The drive seat (61) is a U-shaped plate structure and is installed below the inner arc surface of the frame (51). Three sets of limiting shafts (62) are rotatably arranged on the two inner sides of the drive seat (61) at the limiting groove (52). A drive gear (63) is rotatably arranged above the inner bottom surface of the drive seat (61). The drive gear (63) meshes with the teeth (53). The drive gear (63) is driven by an external motor. The sampling component (7) includes: The sampling hood (71) is a frustum-shaped shell structure with a smaller top and a larger bottom. Multiple arc-shaped air inlet slots (72) are provided on the peripheral side of the sampling hood (71). A filter bag (73) is attached to the inner wall of the upper port of the sampling hood (71). A square plate (74) is provided at the bottom of the filter bag (73). A long rod (75) is coaxially fixed at the upper end of the square plate (74). The long rod (75) can slide up and down and extend into the drive seat (61).

2. The mine gas concentration monitoring device according to claim 1, characterized in that: The drive gear (63) has an elliptical guide groove (631) at one end, and a sliding column (632) is slidably arranged in the guide groove (631). The outer end of the sliding column (632) is rotatably arranged at the upper end of the long rod (75).

3. The mine gas concentration monitoring device according to claim 1, characterized in that: The lower part of the filter bag (73) is a sealing surface (731), and the sealing surface (731) is made of elastic and wear-resistant material. The sealing surface (731) is higher than the upper surface of the square plate (74) when sampling.

4. The mine gas concentration monitoring device according to claim 1, characterized in that: The bottom surface of the sampling cover (71) consists of two rotatable hinged plates (76). A tension spring (78) is provided between the upper end of each hinged plate (76) and its hinged side. An arc-shaped push rod (77) is also hinged above each tension spring (78), with the outer arc surface of the push rod (77) facing upward.

5. The mine gas concentration monitoring device according to claim 1, characterized in that: The front end of the detection device (3) is provided with a temperature sensor (9), and the inside of the detection device (3) is also provided with a water-gas separation device.

6. The mine gas concentration monitoring device according to claim 4, characterized in that: The upper surface of the hinge plate (76) is inclined.

Images