Gas detection device for mine ventilation

Abstract

The utility model relates to a gas detection device for mine ventilation, which comprises an air bellow, a motor, a fan and a gas sensor, the right end of the air bellow is connected with an air port adjusting component, the motor is mounted at the top of the air bellow, the fan is rotatably arranged at the left end of the air bellow through a support, and the fan is connected with the motor through a belt transmission piece. The outer wall of the shaft sleeve is fixedly connected with the inner wall of the air bellow through a plurality of supporting columns. The utility model relates to the technical field of gas detection. According to the gas detection device for mine ventilation, a C-shaped baffle is arranged and can synchronously rotate when a fan rotates, so that a sleeve provided with a gas sensor is intermittently blocked, a gas sample is temporarily reserved in the sleeve, and the contact duration of the air sample and the gas sensor can be effectively prolonged; and the detection precision of the gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas detection, especially to a gas detection device for mine ventilation. BACKGROUND

[0002] Mine ventilation refers to introducing fresh air in underground mine to increase oxygen concentration and dilute and discharge toxic and harmful gases and dust. Mine ventilation can supply sufficient fresh air in the mine to meet the oxygen demand of personnel, regulate the underground climate to create a good working environment, improve the disaster resistance of the mine and protect the safety and health of miners.

[0003] According to the patent No. CN217954328U disclosed a kind of toxic gas detection device for mine ventilation, including wind box, first support frame, second support frame, third support frame, electric push rod, arc baffle, filter screen and ZE03 electrochemical sensor module, the wind box is fixedly connected third support frame by bolt, the third support frame inside fixedly connected third shaft, the third shaft rotationally connects connecting block, the connecting block bottom fixedly connected arc fixed plate, the arc fixed plate and third support frame inside are respectively fixedly connected connecting plate, the wind box inside fixedly connected limiting plate, the limiting plate middle part is equipped with air hole, the air hole inside fixedly connected ZE03 electrochemical sensor module. The electric push rod is extended and moved by controller control, to facilitate the both ends of electric push rod along second shaft rotation, and push arc baffle along connecting block in third shaft outer wall rotation, to facilitate the amount of air intake of air inlet by adjusting the inclination angle of arc baffle.

[0004] According to the above patent, ZE03 electrochemical sensor module is fixedly connected in air hole to detect toxic gas in mine, and in mine ventilation system, the power of fan is the key factor to ensure ventilation efficiency and safety, in order to provide sufficient fresh air to dilute and discharge harmful gas, the power of fan must be large enough. When the power of fan is relatively large, the flow rate of gas will increase, so that a large amount of gas rapidly passes through ZE03 electrochemical sensor module, the contact time of air and ZE03 electrochemical sensor module is too short, which affects the detection accuracy of ZE03 electrochemical sensor module. UTILITY MODEL CONTENT

[0005] According to the deficiencies existing in the prior art, the purpose of the utility model is to provide a kind of gas detection device for mine ventilation, to solve the technical problems mentioned in the above background.

[0006] The above technical purpose of the utility model is realized by the following technical scheme:

[0007] The utility model provides a gas detection device for mine ventilation, including the wind box, the right end of wind box is connected with the air port regulation assembly, still include motor, fan and gas sensor, motor installs at the top of wind box, fan is rotatably arranged at the left end of wind box through support, fan is connected with motor through belt transmission spare, the right side of fan is provided with the shaft sleeve, the outer wall of shaft sleeve is fixedly connected with the inner wall of wind box through a plurality of support column, the sleeve is provided with gas sensor, the sleeve is rotatably connected with the connecting shaft, the end of connecting shaft is fixedly connected with fan, the outer wall of connecting shaft is located at the left and right sides of sleeve and is connected with the C-shaped baffle for blocking sleeve through the support rod.

[0008] Further, the radius of the C-shaped baffle is the same as the length between the sleeve and the connecting shaft, so that the two C-shaped baffles block the openings on both sides of the sleeve, respectively.

[0009] Further, the opening position of the sleeve is fixedly connected with a filter screen, and the side of the C-shaped baffle close to the sleeve is fixedly connected with a brush, and the side of the brush away from the C-shaped baffle is in contact with the filter screen.

[0010] Further, the end of the connecting shaft close to the fan is fixedly connected with a speed reducer.

[0011] Further, the belt transmission spare includes a belt pulley and a connecting belt, the belt pulley is provided with two, and is connected with the output shaft of the motor and the rotating shaft of the fan, respectively, and the two belt pulleys are connected through the connecting belt.

[0012] Further, the top of the wind box is fixedly connected with a protective cover, and the protective cover is arranged outside the belt pulley.

[0013] In summary, the utility model includes at least one of the following beneficial technical effects:

[0014] 1. The gas detection device for mine ventilation, through the C-shaped baffle, can rotate synchronously when the fan rotates, so that the sleeve with the gas sensor is intermittently blocked, the gas sample is temporarily retained in the sleeve, the contact time of the air sample and the gas sensor can be effectively improved, and the detection accuracy of the gas is improved.

[0015] 2. The gas detection device for mine ventilation, through the filter screen, can protect the gas sensor, avoid the dust attached to the surface of the gas sensor affecting the detection accuracy, and the brush on the C-shaped baffle can intermittently clean the filter screen when rotating, avoid the filter screen being blocked and affecting the operation of the gas sensor, so as to effectively ensure the reliability of the gas detection. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 It is a structural schematic view of the gas detection device for mine ventilation of the present application.

[0018] Figure 2 It is an internal structure schematic view of the gas detection device for mine ventilation of the present application.

[0019] Figure 3 It is an installation position structure schematic view of the gas sensor in the gas detection device for mine ventilation of the present application.

[0020] Figure 4 It is a side view of the C-shaped baffle in the gas detection device for mine ventilation of the present application.

[0021] In the figure, 1, wind box; 2, air inlet adjusting assembly; 3, motor; 4, fan; 5, gas sensor; 6, support; 7, belt transmission part; 71, pulley; 72, connecting belt; 8, shaft sleeve; 9, support column; 10, sleeve; 11, connecting shaft; 12, support rod; 13, C-shaped baffle; 14, filter screen; 15, brush; 16, speed reducer; 17, protective cover. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in combination with the drawings.

[0023] Embodiment:

[0024] Reference Figure 1 - Figure 4 The present application discloses a gas detection device for mine ventilation, which comprises a wind box 1, an air inlet adjusting assembly 2 connected to the right end of the wind box 1, a motor 3, a fan 4 and a gas sensor 5, wherein the motor 3 is installed on the top of the wind box 1, the fan 4 is rotatably arranged at the left end of the wind box 1 through a support 6, the fan 4 is connected with the motor 3 through a belt transmission part 7, a shaft sleeve 8 is arranged on the right side of the fan 4, the outer wall of the shaft sleeve 8 is fixedly connected with the inner wall of the wind box 1 through a plurality of support columns 9, a sleeve 10 is fixedly connected on the support column 9, the gas sensor 5 is arranged in the sleeve 10, a connecting shaft 11 is rotatably connected in the sleeve 10, the end of the connecting shaft 11 is fixedly connected with the fan 4, and the outer wall of the connecting shaft 11 is connected with a C-shaped baffle 13 for blocking the sleeve 10 through a support rod 12 on the left and right sides of the sleeve 10.

[0025] In this embodiment, it is observed that Figure 1 And Figure 2 It can be found that by connecting the air inlet adjusting assembly 2 at the right end of the air bellow 1, the air inlet amount of the air bellow 1 can be adjusted to realize the adjustment of the ventilation efficiency.

[0026] Further observation shows that Figure 2 It can be found that by connecting the fan 4 at the left end of the air bellow 1 through the support 6, and installing the motor 3 on the top of the air bellow 1, and connecting the motor 3 and the fan 4 through the belt transmission member 7, the fan 4 can be rotated by the belt transmission member 7 driven by the motor 3 to realize the ventilation operation in the mine.

[0027] Since the power of the fan must be large enough to provide sufficient fresh air to dilute and discharge harmful gases, the air flow speed in the air bellow 1 will be fast, which will affect the air detection accuracy of the gas sensor 5.

[0028] Therefore, it is observed that Figure 2 And Figure 3 It can be found that the shaft sleeve 8 is arranged at the right side of the fan 4, the outer wall of the shaft sleeve 8 is fixedly connected with the inner wall of the air bellow 1 through the plurality of support columns 9, the support column 9 is fixedly connected with the sleeve 10, and the gas sensor 5 is arranged in the sleeve 10 to detect the air during the ventilation of the mine.

[0029] Further observation shows that Figure 2 And Figure 3 It can be found that the connecting shaft 11 is rotatably connected in the sleeve 10, the end of the connecting shaft 11 is fixedly connected with the fan 4, the outer wall of the connecting shaft 11 is connected with the C-shaped baffle 13 for blocking the sleeve 10 through the support rod 12 on the left and right sides of the sleeve 10, the sleeve 10 can be blocked by the C-shaped baffle 13 to stop the air flow in the sleeve 10, the contact time of the air and the gas sensor 5 is prolonged, and the detection accuracy can be effectively improved. At this time, when the fan 4 rotates, the fan 4 will rotate with the connecting shaft 11, then the C-shaped baffle 13 will rotate through the connecting shaft 11, so that the plurality of sleeves 10 intermittently coincide with the gaps of the C-shaped baffle 13 to replace the detection gas sample, realize the continuous detection of ventilation, and ensure the detection reliability of the gas.

[0030] The air inlet adjusting assembly 2, the connecting plate, the second rotating shaft, the electric push rod, the third support frame, the arc-shaped baffle, the third rotating shaft, and the connecting block in the Chinese patent publication No. CN217954328U are combined to form the same structure, and the gas sensor 5 is a ZE03 electrochemical sensor module. Since no improvement is made, no more description is given.

[0031] In a further preferred embodiment of the present application, as Figure 4As shown, the radius of the C-shaped baffle 13 is the same as the length between the sleeve 10 and the connecting shaft 11, so that the two C-shaped baffles 13 respectively block the openings on both sides of the sleeve 10.

[0032] In this embodiment, it is observed that Figure 4 It can be found that, by making the radius of the C-shaped baffle 13 the same as the length between the sleeve 10 and the connecting shaft 11, the two C-shaped baffles 13 respectively block the openings on both sides of the sleeve 10, which can effectively block the air from entering the sleeve 10, so that the air in the sleeve 10 can stably contact the gas sensor 5, and the detection accuracy of the gas is effectively improved.

[0033] In further preferable embodiments of the utility model, as shown in Figure 3 As shown, the opening position of the sleeve 10 is fixedly connected with a filter screen 14, and the side of the C-shaped baffle 13 close to the sleeve 10 is fixedly connected with a brush 15, and the side of the brush 15 away from the C-shaped baffle 13 is in contact with the filter screen 14.

[0034] In this embodiment, by fixedly connecting the filter screen 14 at the opening position of the sleeve 10, the dust in the air can be filtered, and the dust adhering to the gas sensor 5 is avoided to affect the detection accuracy.

[0035] And by fixedly connecting the brush 15 at the side of the C-shaped baffle 13 close to the sleeve 10, and the side of the brush 15 away from the C-shaped baffle 13 is in contact with the filter screen 14, the filter screen 14 can be cleaned when the C-shaped baffle 13 rotates, and the filter screen 14 is prevented from being blocked.

[0036] In further preferable embodiments of the utility model, as shown in Figure 2 As shown, one end of the connecting shaft 11 close to the fan 4 is fixedly connected with a speed reducer 16.

[0037] In this embodiment, since the fan 4 needs to provide relatively strong wind power to ensure the ventilation effect, it is necessary to make the fan 4 have a high rotating speed, which will cause the C-shaped baffle 13 with uneven weight distribution to be damaged due to centrifugal force.

[0038] Therefore, it is observed that Figure 2 It can be found that, by connecting the speed reducer 16 at the end of the connecting shaft 11 close to the fan 4, the rotating speed of the C-shaped baffle 13 can be effectively reduced, and the service life of the C-shaped baffle 13 is ensured.

[0039] In further preferable embodiments of the utility model, as shown in Figure 2 As shown, the belt transmission member 7 comprises a belt pulley 71 and a connecting belt 72, the belt pulley 71 is provided with two, and is connected with the output shaft of the motor 3 and the rotating shaft of the fan 4 respectively, and the two belt pulleys 71 are connected through the connecting belt 72;

[0040] The top of the air bellow 1 is fixedly connected with a protective cover 17, which is arranged outside the belt pulley 71.

[0041] In this embodiment, the belt transmission 7 is mainly composed of the belt pulley 71 and the connecting belt 72, so that the rotation of the fan 4 can be controlled when the motor 3 is running, the built-in fan 3 is prevented from interfering with the air flow in the air bellow 1, and the ventilation effect is further improved.

[0042] Since the fan 3 is externally arranged, something may be rolled into the belt pulley 71, which affects the running stability of the belt transmission 7. Figure 2 It can be found that the top of the air bellow 1 is connected with the protective cover 17, which covers the outside of the belt pulley 71, and can be used for protecting the belt transmission 7.

[0043] The embodiments of the specific embodiment are the preferred embodiments of the utility model, and are not limited to the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A gas detection device for mine ventilation, comprising a bellows (1), wherein the right end of the bellows (1) is connected to a vent adjustment assembly (2), characterized in that, It also includes a motor (3), a fan (4) and a gas sensor (5). The motor (3) is installed on the top of the air box (1). The fan (4) is rotatably set on the left end of the air box (1) via a bracket (6). The fan (4) and the motor (3) are connected by a belt drive (7). A bushing (8) is provided on the right side of the fan (4). The outer wall of the bushing (8) is fixedly connected to the inner wall of the air box (1) via multiple support columns (9). A sleeve (10) is fixedly connected on the support column (9). A gas sensor (5) is provided inside the sleeve (10). A connecting shaft (11) is rotatably connected inside the sleeve (10). The end of the connecting shaft (11) is fixedly connected to the fan (4). The outer wall of the connecting shaft (11) is connected to C-shaped baffles (13) for blocking the sleeve (10) via support rods (12) on both the left and right sides of the sleeve (10).

2. The gas detection device for mine ventilation according to claim 1, characterized in that, The radius of the C-shaped baffle (13) is the same as the length between the sleeve (10) and the connecting shaft (11), so that the two C-shaped baffles (13) block the openings on both sides of the sleeve (10) respectively.

3. A gas detection device for mine ventilation according to claim 2, characterized in that, A filter screen (14) is fixedly connected to the opening of the sleeve (10), and a brush bristle (15) is fixedly connected to the side of the C-shaped baffle (13) near the sleeve (10). The side of the brush bristle (15) away from the C-shaped baffle (13) contacts the filter screen (14).

4. A gas detection device for mine ventilation according to claim 3, characterized in that, A speed reducer (16) is fixedly connected to one end of the connecting shaft (11) near the fan (4).

5. A gas detection device for mine ventilation according to claim 4, characterized in that, The belt drive component (7) includes a pulley (71) and a connecting belt (72). There are two pulleys (71), which are respectively connected to the output shaft of the motor (3) and the rotating shaft of the fan (4). The two pulleys (71) are connected by the connecting belt (72).

6. A gas detection device for mine ventilation according to claim 5, characterized in that, A protective cover (17) is fixedly connected to the top of the bellows (1), and the protective cover (17) is located on the outside of the pulley (71).

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