Mine ventilation volume detection device

Abstract

The utility model discloses a mine ventilation volume detection device relates to the technical field of coal mine safety production, including ventilation roadway, the inner top wall fixed mounting of ventilation roadway has motor and mounting panel, the one side sliding installation of mounting panel has sliding frame, the side fixed mounting of mounting panel has tension sensor, and the detection end of tension sensor is fixedly connected with the side of sliding frame through tension spring, the side of sliding frame is equipped with the rotating hole. In this application, the wind -catcher can be driven to realize rotation through motor, can rotate 90 degrees to perpendicular state with sliding frame when not carrying out the air volume detection, avoids causing the hindrance to the normal ventilation in ventilation roadway, and the wind -catcher always rotates along the same direction, even if the surface adheres the impurity in the detection process, will also rotate to the back when next time detects, ensures that the impurity does not influence detection accuracy, and ventilation smoothness and detection accuracy are taken into account.

Description

Technical Field

[0001] This utility model relates to the field of coal mine safety production technology, and in particular to a mine ventilation air volume detection device. Background Technology

[0002] Mine ventilation systems are core facilities for ensuring underground work safety. Their ventilation volume needs to be monitored in real time and accurately to ensure underground air circulation, the removal of harmful gases, and a safe working environment. Mine ventilation volume detection devices, as key monitoring equipment, provide data support for the adjustment and troubleshooting of ventilation systems by continuously monitoring the air volume in ventilation roadways. They are indispensable technical equipment in mine safety production.

[0003] Existing mine ventilation air volume detection devices have significant limitations in practical applications: On the one hand, the core detection components of most devices (such as air-bearing plates) are fixed installation structures. When not detecting air volume, these components occupy space in the ventilation roadway, creating ventilation resistance and affecting airflow efficiency. This is especially problematic in mine roadways with high air volume requirements, easily leading to localized ventilation problems. On the other hand, the air-bearing plates are exposed to underground air containing dust, coal dust, and other impurities for extended periods, causing impurities to easily adhere to their surface. Over time, this directly affects the detection accuracy. Therefore, we have disclosed a mine ventilation air volume detection device to meet people's needs. Utility Model Content

[0004] The purpose of this application is to provide a mine ventilation air volume detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a mine ventilation air volume detection device, including a ventilation roadway, a motor and an installation plate are fixedly installed on the inner top wall of the ventilation roadway, a sliding frame is slidably installed on one side of the installation plate, a tension sensor is fixedly installed on the side of the installation plate, and the detection end of the tension sensor is fixedly connected to the side of the sliding frame through a tension spring;

[0006] The sliding frame has a rotating hole on its side. The inner top wall of the rotating hole and the side of the sliding frame are both rotatably mounted with rotating shafts. Two bevel gears are fixedly sleeved on the two rotating shafts and the two bevel gears mesh with each other.

[0007] A short spur gear is fixedly sleeved on the upper rotating shaft, and a long spur gear is fixedly installed on the output shaft of the motor. The long spur gear meshes with the short spur gear.

[0008] The bottom end of the rotating shaft located below passes through the bottom inner wall of the rotating hole and is fixedly installed with a wind-bearing plate. Both vertical inner walls of the sliding frame are equipped with sealing mechanisms that seal the sides of the wind-bearing plate.

[0009] Preferably, the sealing mechanism includes a sealing groove formed on the vertical inner wall of the sliding frame, a sealing plate slidably installed in the sealing groove, and the side of the sealing plate away from the air-bearing plate is fixedly connected to the inner wall of the sealing groove by multiple return springs.

[0010] Preferably, the sides of the sealing plate and the air-bearing plate that are close to each other are arc-shaped.

[0011] Preferably, the two vertical sides of the air-bearing plate are in contact with the adjacent sides of the two sealing plates, and the top and bottom of the air-bearing plate are in contact with the top and bottom inner walls of the sliding frame, respectively.

[0012] Preferably, a clearance hole is provided on one side of the sliding frame, and the side of the long spur gear extends into the clearance hole.

[0013] Preferably, the length of the long spur gear is greater than the length of the short spur gear.

[0014] Preferably, a U-shaped plate is fixedly installed on the side of the sliding frame, and the side of the rotating shaft located above is rotatably installed on the side of the U-shaped plate.

[0015] Preferably, two guide rods are fixedly installed on the side of the sliding frame, and the mounting plate is slidably sleeved on the two guide rods.

[0016] In summary, the technical effects and advantages of this utility model are as follows:

[0017] In this application, the air-bearing plate can be rotated by a motor. When the air volume is not being measured, it can rotate 90 degrees to be perpendicular to the sliding frame, thus avoiding obstruction of normal ventilation in the ventilation duct. Moreover, the air-bearing plate always rotates in the same direction. Even if impurities adhere to its surface during the measurement process, it will rotate to the back side during the next measurement, ensuring that the impurities do not affect the measurement accuracy, thus balancing ventilation smoothness and measurement accuracy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional view of a mine ventilation air volume detection device;

[0020] Figure 2 A first-person perspective 3D view of a mine ventilation air volume detection device that does not include ventilation roadways;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 A three-dimensional view of a mine ventilation air volume detection device without ventilation roadways and with the sliding frame cut open;

[0023] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0024] Figure 6 This is a second-view stereoscopic image of a mine ventilation air volume detection device that does not include ventilation roadways.

[0025] In the diagram: 1. Ventilation tunnel; 2. Motor; 3. Sliding frame; 4. Air-bearing plate; 5. Tension spring; 6. Tension sensor; 7. Guide rod; 8. Mounting plate; 9. U-shaped plate; 10. Rotating shaft; 11. Rotating hole; 12. Bevel gear; 13. Short spur gear; 14. Long spur gear; 15. Sealing plate; 16. Return spring; 17. Sealing groove; 18. Clearance hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 6 The embodiments provided by this utility model are as follows:

[0028] A mine ventilation air volume detection device includes a ventilation roadway 1 and a control box. The installation position of the control box is consistent with the control box setting in the prior art document CN219869824U, which is not shown in this application. The control box is connected to a motor 2 and a tension sensor. The motor 2 and a mounting plate 8 are fixedly installed on the inner top wall of the ventilation roadway 1. A sliding frame 3 is slidably installed on one side of the mounting plate 8. A tension sensor 6 is fixedly installed on the side of the mounting plate 8. The detection end of the tension sensor 6 is fixedly connected to the side of the sliding frame 3 through a tension spring 5.

[0029] A rotating hole 11 is provided on the side of the sliding frame 3. A rotating shaft 10 is rotatably installed on the inner top wall of the rotating hole 11 and the side of the sliding frame 3. A bevel gear 12 is fixedly sleeved on each of the two rotating shafts 10, and the two bevel gears 12 mesh with each other.

[0030] A short spur gear 13 is fixedly sleeved on the upper rotating shaft 10, and a long spur gear 14 is fixedly installed on the output shaft of the motor 2. The long spur gear 14 meshes with the short spur gear 13.

[0031] The bottom end of the rotating shaft 10 located below passes through the bottom inner wall of the rotating hole 11 and is fixedly installed with a wind-bearing plate 4. The wind-bearing plate 4 is the wind-bearing plate in the prior art CN219869824U. Both vertical inner walls of the sliding frame 3 are equipped with sealing mechanisms that seal the sides of the wind-bearing plate 4.

[0032] During operation, air enters the ventilation tunnel 1, and the airflow pushes the air-bearing plate 4 to move. The movement of the air-bearing plate 4 causes the sliding frame 3 and the two guide rods 7 to move, which in turn stretches the tension spring 5. The stretching of the tension spring 5 causes the tension sensor 6 to receive the tension signal, which is then transmitted to the control box. The control box calculates the ventilation volume in the ventilation tunnel 1 based on the tension signal. In the prior art, the prior art document CN219869824U mentions that the wind pressure is obtained by detecting the real-time pressure on the air-bearing plate and then converted into ventilation volume. This application adopts the same method as the prior art document, so that the ventilation volume can be calculated.

[0033] like Figure 5 As shown, the sealing mechanism includes a sealing groove 17 formed on the vertical inner wall of the sliding frame 3. A sealing plate 15 is slidably installed in the sealing groove 17. The side of the sealing plate 15 away from the air-bearing plate 4 is fixedly connected to the inner wall of the sealing groove 17 by multiple return springs 16. When the air-bearing plate 4 rotates, it presses the two sealing plates 15 to move them. The multiple return springs 16 deform. When the air-bearing plate 4 coincides with the sliding frame 3, the sides of the two sealing plates 15 that are close to each other contact the two sides of the air-bearing plate 4, thereby sealing.

[0034] like Figure 5 As shown, the sides of the sealing plate 15 and the air-bearing plate 4 that are close to each other are curved. The advantage of this design is that it makes it easy for the air-bearing plate 4 to rotate and coincide with the sliding frame 3.

[0035] like Figure 5 As shown, the two vertical sides of the air-bearing plate 4 contact the adjacent sides of the two sealing plates 15, and the top and bottom of the air-bearing plate 4 contact the top and bottom inner walls of the sliding frame 3, respectively. This arrangement facilitates the sealing between the air-bearing plate 4 and the sliding frame 3.

[0036] like Figure 6 As shown, a clearance hole 18 is provided on one side of the sliding frame 3, and the side of the long spur gear 14 extends into the clearance hole 18. The clearance hole 18 is provided to allow the long spur gear 14 to pass.

[0037] like Figure 3As shown, the length of the long spur gear 14 is greater than the length of the short spur gear 13. The advantage of this arrangement is that the long spur gear 14 can still mesh with the short spur gear 13 after the sliding frame 3 has moved.

[0038] like Figure 3 As shown, a U-shaped plate 9 is fixedly installed on the side of the sliding frame 3, and the side of the upper rotating shaft 10 is rotatably installed on the side of the U-shaped plate 9. The U-shaped plate 9 is used to limit the movement of the upper rotating shaft 10.

[0039] like Figure 2 As shown, two guide rods 7 are fixedly installed on the side of the sliding frame 3, and the mounting plate 8 is slidably sleeved on the two guide rods 7. The guide rods 7 are used to limit the sliding frame 3, so that it can only slide along the direction of the guide rods 7.

[0040] Working principle:

[0041] During operation, air enters the ventilation tunnel 1. The air passes through the air-bearing plate 4, which pushes the air-bearing plate 4 to move. The movement of the air-bearing plate 4 causes the sliding frame 3 and the two guide rods 7 to move, which in turn stretches the tension spring 5. The stretching of the tension spring 5 causes the tension sensor 6 to receive the tension signal, which is then transmitted to the control box. The control box calculates the ventilation volume in the ventilation tunnel 1 based on the tension signal.

[0042] After the test is completed, the motor 2 is started. The output shaft of the motor 2 rotates, which drives the long spur gear 14 to rotate. The rotation of the long spur gear 14 drives the short spur gear 13 to rotate. The rotation of the short spur gear 13 drives the upper bevel gear 12 and the rotating shaft 10 to rotate, which in turn causes the lower bevel gear 12 and the rotating shaft 10 to rotate. The rotation of the lower rotating shaft 10 drives the air-bearing plate 4 to rotate, so that the air-bearing plate 4 rotates to be perpendicular to the sliding frame 3, without affecting the ventilation in the ventilation tunnel 1.

[0043] When a second test is required, motor 2 is started again, causing the output shaft of motor 2 to continue rotating. This causes the air-bearing plate 4 to continue rotating in the initial direction until it coincides with the sliding frame 3. At this point, the air-bearing plate 4 flips over, making it less likely for impurities to adhere to it. Even if there are impurities, they will be blown away by the flipping of the air-bearing plate 4. At the same time, the rotation of the air-bearing plate 4 compresses the two sealing plates 15, causing them to move. Multiple return springs 16 deform. When the air-bearing plate 4 coincides with the sliding frame 3, the sides of the two sealing plates 15 that are close to each other come into contact with the two sides of the air-bearing plate 4, thus sealing the air-bearing plate 4.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mine ventilation air volume detection device, characterized in that: The ventilation tunnel (1) includes a motor (2) and a mounting plate (8) fixedly installed on the inner top wall of the ventilation tunnel (1). A sliding frame (3) is slidably installed on one side of the mounting plate (8). A tension sensor (6) is fixedly installed on the side of the mounting plate (8). The detection end of the tension sensor (6) is fixedly connected to the side of the sliding frame (3) through a tension spring (5). The sliding frame (3) has a rotating hole (11) on its side. The inner top wall of the rotating hole (11) and the side of the sliding frame (3) are both rotatably mounted with a rotating shaft (10). Both rotating shafts (10) are fixedly sleeved with bevel gears (12), and the two bevel gears (12) mesh with each other. A short spur gear (13) is fixedly sleeved on the upper rotating shaft (10), and a long spur gear (14) is fixedly installed on the output shaft of the motor (2), and the long spur gear (14) meshes with the short spur gear (13); The bottom end of the rotating shaft (10) located below passes through the bottom inner wall of the rotating hole (11) and is fixedly installed with a wind-bearing plate (4). Both vertical inner walls of the sliding frame (3) are equipped with sealing mechanisms that seal the sides of the wind-bearing plate (4).

2. The mine ventilation air volume detection device according to claim 1, characterized in that: The sealing mechanism includes a sealing groove (17) opened on the vertical inner wall of the sliding frame (3), and a sealing plate (15) is slidably installed in the sealing groove (17). The side of the sealing plate (15) away from the wind-bearing plate (4) is fixedly connected to the inner wall of the sealing groove (17) by a plurality of return springs (16).

3. The mine ventilation air volume detection device according to claim 2, characterized in that: The sides of the sealing plate (15) and the wind-bearing plate (4) that are close to each other are arranged in an arc shape.

4. The mine ventilation air volume detection device according to claim 2, characterized in that: The two vertical sides of the air-bearing plate (4) are in contact with the sides of the two sealing plates (15) that are close to each other, and the top and bottom of the air-bearing plate (4) are in contact with the top and bottom inner walls of the sliding frame (3), respectively.

5. The mine ventilation air volume detection device according to claim 1, characterized in that: A clearance hole (18) is provided on one side of the sliding frame (3), and the side of the long spur gear (14) extends into the clearance hole (18).

6. The mine ventilation air volume detection device according to claim 1, characterized in that: The length of the long spur gear (14) is greater than the length of the short spur gear (13).

7. The mine ventilation air volume detection device according to claim 1, characterized in that: A U-shaped plate (9) is fixedly installed on the side of the sliding frame (3), and the side of the rotating shaft (10) located above is rotatably installed on the side of the U-shaped plate (9).

8. The mine ventilation air volume detection device according to claim 1, characterized in that: Two guide rods (7) are fixedly installed on the side of the sliding frame (3), and the mounting plate (8) is slidably sleeved on the two guide rods (7).

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