Mine ventilation resistance monitoring device

Abstract

The utility model relates to the field of coal mine ventilation, and discloses a mine ventilation resistance monitoring device which comprises a circular adjusting shell, a connecting pipeline is fixedly installed on the outer surface of the front side of the circular adjusting shell, and a first ventilation pipeline is fixedly installed on the outer surface of the top of the circular adjusting shell. A second ventilation pipeline is fixedly mounted on the outer surface of the bottom of the circular adjusting shell, the first ventilation pipeline is blocked by the blocking plate in a normal state, so that gas circulates through the second ventilation pipeline, resistance monitoring is conducted through the resistance monitoring mechanism, and a servo motor drives a first connecting plate and the blocking plate to rotate; in this way, the blocking plate can be conveniently rotated to the position corresponding to the second ventilation pipeline, at the moment, gas in the circular adjusting shell can enter the first ventilation pipeline to flow, and therefore a differential pressure gauge and a resistance sensor in the first ventilation pipeline can conveniently monitor the gas flowing resistance; and the personnel can conveniently repair and maintain the resistance monitoring mechanism in the ventilation pipeline II, so that the convenience is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of coal mine ventilation, and specifically relates to a mine ventilation resistance monitoring device. Background Art

[0002] The mine ventilation resistance monitoring device is a device used to monitor the resistance of the mine ventilation system. It is designed to ensure the effective operation of the ventilation system and provide real-time data to guide operation, maintenance and adjustment. The device is usually composed of sensors, data acquisition units and data processing software. It can monitor the airflow resistance in the ventilation duct in real time and transmit the data to the central monitoring system for analysis and display. The mine ventilation resistance monitoring device is usually installed on the mine ventilation duct to facilitate real-time monitoring of the operating status of the ventilation system, timely detection of changes and problems in ventilation resistance, and take corresponding measures to adjust and repair, so as to ensure the normal operation of the ventilation system and the safety of miners.

[0003] For example, the utility model patent with announcement number CN217735578U discloses a mine ventilation resistance monitoring device, in which the ventilation resistance measuring device is installed on the horizontal tunnel section damper, the steel pipe is horizontally hoisted on the horizontal tunnel section damper, and the two ends of the steel pipe are respectively installed on the air inlet tunnel damper and the return air tunnel damper; the hose is set in the steel pipe; the U-shaped differential pressure gauge and the pressure sensor are both installed on the tee, one end of the U-shaped differential pressure gauge is connected to the air inlet tunnel damper through the hose, and the other end is connected to the return air tunnel damper through the hose; the pressure sensor is connected to the hose; the control system is connected to the pressure sensor. The utility model sets the hose in the horizontally set steel pipe to ensure the normal ventilation of the hose; the ventilation resistance at both ends is received by the hose, and the relative pressure difference at both ends of the damper in the air inlet and return tunnels is measured by the U-shaped and pressure sensors, forming a ring network relative pressure measurement method, which can intuitively reflect the ventilation resistance distribution of the mine, mining area, and working face.

[0004] However, it was found during actual use that: the device allows the air in the inlet and return air tunnels to flow inside the hose, so as to monitor the ventilation resistance in the mine through the U-type differential pressure gauge and the pressure sensor. However, the air flowing in the inlet and return air tunnels is often mixed with dust and other floating debris. When the air enters the hose, some of the dust and floating debris will adhere to the detection end of the U-type differential pressure gauge and the pressure sensor, so that the U-type differential pressure gauge and the pressure sensor need to be maintained regularly. When the U-type differential pressure gauge and the pressure sensor are maintained, the ventilation resistance monitoring in the mine will stop, which will increase the safety risk. For this purpose, a mine ventilation resistance monitoring device is provided. Utility Model Content

[0005] The purpose of this application is to provide a mine ventilation resistance monitoring device in order to solve the above-mentioned problems.

[0006] The technical solution adopted in the present application is as follows: A mine ventilation resistance monitoring device comprises a circular adjusting shell, a connecting pipe is fixedly installed on the outer surface of the front side of the circular adjusting shell, a ventilation duct one is fixedly installed on the outer surface of the top of the circular adjusting shell, a ventilation duct two is fixedly installed on the outer surface of the bottom of the circular adjusting shell, resistance monitoring mechanisms are respectively arranged on the sides of the ventilation duct one and the ventilation duct two, a baffle plate is arranged inside the circular adjusting shell, a first connecting plate is fixedly installed on the bottom surface of the baffle plate, a sealing end cover is fixedly installed on the front side of the circular adjusting shell by means of arranged bolts, a sealing gasket is fixedly installed on the side of the sealing end cover close to the circular adjusting shell, a servo motor is fixedly installed on the front side of the sealing end cover, a driving end of the servo motor passes through one side of the sealing end cover and extends to the inside of the circular adjusting shell, and the driving end of the servo motor is fixed to one side of the first connecting plate.

[0007] In a preferred embodiment, two proximity switches are fixedly installed on the outer surface of the circular adjustment shell, and the sensing ends of the two proximity switches are located inside the circular adjustment shell, and two sensing arc iron sheets are symmetrically fixedly installed on the sides of the blocking plate.

[0008] In a preferred embodiment, the resistance monitoring mechanism includes a differential pressure gauge and a resistance sensor. The top surface of ventilation duct one and the bottom surface of ventilation duct two are respectively fixedly installed with a differential pressure gauge, and one side of ventilation duct one and ventilation duct two are respectively penetrated and fixedly installed with a resistance sensor.

[0009] In a preferred embodiment, a bearing is fixedly mounted on the inner side wall of the circular adjustment housing, a connecting shaft is fixedly mounted in the middle of the bearing, and one end of the connecting shaft is fixed to one side of the first connecting plate.

[0010] In a preferred embodiment, a rubber sealing pad is fixedly mounted on the top surface of the blocking plate.

[0011] In a preferred embodiment, a second connecting plate is fixedly mounted on the outer surface of one end of the connecting pipe away from the circular adjusting housing.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0013] 1. In the present application, due to the adoption of the above-mentioned scheme, under normal conditions, the blocking plate will block the ventilation duct one, so that the gas can flow through the ventilation duct two and be monitored by the resistance monitoring mechanism. The servo motor drives the first connecting plate and the blocking plate to rotate, so that it is convenient to rotate the blocking plate to a position corresponding to the ventilation duct two. When the blocking plate blocks the ventilation duct two, the gas inside the circular adjustment shell will flow into the ventilation duct one, so that the differential pressure gauge and resistance sensor in the ventilation duct one can monitor the gas flow resistance, which is convenient for personnel to repair and maintain the resistance monitoring mechanism in the ventilation duct two, thereby improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the internal structure of the circular adjustment housing of the present application;

[0016] Figure 3 This is a schematic diagram of the structure in which the blocking plate of the present application is not installed.

[0017] Markings in the figure: 1. circular adjustment shell; 2. connecting pipe; 3. ventilation duct one; 4. ventilation duct two; 5. resistance monitoring mechanism; 6. blocking plate; 7. first connecting plate; 8. sealing end cover; 9. servo motor; 10. proximity switch; 11. induction arc iron sheet; 12. differential pressure gauge; 13. resistance sensor; 14. bearing; 15. connecting shaft; 16. rubber sealing pad; 17. second connecting plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] refer to Figure 1-3 A mine ventilation resistance monitoring device includes a circular adjustment shell 1, a connecting pipe 2 is fixedly installed on the front outer surface of the circular adjustment shell 1, and a second connecting plate 17 is fixedly installed on the outer surface of one end of the connecting pipe 2 away from the circular adjustment shell 1; through the provision of the second connecting plate 17, it is convenient to connect the connecting pipe 2 with the ventilation pipe inside the mine, so as to facilitate the subsequent monitoring of the resistance in the mine ventilation pipe.

[0020] refer to Figure 1 , Figure 2A ventilation duct 1 3 is fixedly installed on the top outer surface of the circular adjusting shell 1, and a ventilation duct 2 4 is fixedly installed on the bottom outer surface of the circular adjusting shell 1. Resistance monitoring mechanisms 5 are respectively provided on the sides of the ventilation duct 1 3 and the ventilation duct 2 4; the gas inside the connecting pipe 2 enters the interior of the circular adjusting shell 1. At this time, the circular adjusting shell 1 is provided to facilitate the control of the flow direction of the gas, and the resistance monitoring mechanism 5 is provided to facilitate the monitoring of the gas resistance inside the ventilation duct 1 3 and the ventilation duct 2 4.

[0021] refer to Figure 1 The resistance monitoring mechanism 5 includes a differential pressure gauge 12 and a resistance sensor 13. The top surface of the ventilation duct 1 3 and the bottom surface of the ventilation duct 2 4 are respectively fixedly installed with a differential pressure gauge 12, and one side of the ventilation duct 1 3 and the ventilation duct 2 4 is respectively penetrated and fixedly installed with a resistance sensor 13; the differential pressure gauge 12 is measured by means of a pressure sensor so as to monitor the differential pressure of the ventilation system in real time. Through the reading of the differential pressure gauge, the working condition of the ventilation system can be understood and the change of ventilation resistance can be discovered in time. The resistance sensor 13 uses strain gauges, piezoelectric sensors and other technologies to detect the pressure and Strain, and then infer the resistance of the ventilation system, can evaluate the resistance situation in the ventilation system, and timely adjust the operating parameters of the ventilation system, the device uses a differential pressure gauge 12 and a resistance sensor 13 to simultaneously monitor the resistance of ventilation duct 1 3 and ventilation duct 2 4, can more comprehensively evaluate the operating status of the ventilation system, the differential pressure gauge 12 and the resistance sensor 13 are connected to the external terminal through the controller, so that it is convenient to transmit the monitoring information to the terminal display screen, the differential pressure gauge 12 and the resistance sensor 13 are existing structures, this application only uses them without improving their structure, and no further elaboration is made here.

[0022] refer to Figure 1 , Figure 2 and Figure 3 A blocking plate 6 is arranged inside the circular adjusting shell 1, a rubber sealing pad 16 is fixedly installed on the top surface of the blocking plate 6, a first connecting plate 7 is fixedly installed on the bottom surface of the blocking plate 6, a sealing end cover 8 is fixedly installed on the front side of the circular adjusting shell 1 by means of bolts, and a sealing gasket is fixedly installed on the side of the sealing end cover 8 close to the circular adjusting shell 1; through the setting of the blocking plate 6, it is convenient to block one of the ventilation ducts 1 3 and the ventilation duct 2 4, so that the gas can only flow through one duct, and through the setting of the sealing end cover 8, it is convenient for personnel to unscrew the bolts to maintain the structure inside the circular adjusting shell 1.

[0023] refer to Figure 1 , Figure 2 and Figure 3A servo motor 9 is fixedly installed on the front side of the sealing end cover 8. The driving end of the servo motor 9 passes through one side of the sealing end cover 8 and extends to the inside of the circular adjustment shell 1. The driving end of the servo motor 9 is fixed to one side of the first connecting plate 7. The servo motor 9 is arranged to facilitate the rotation of the first connecting plate 7 and the blocking plate 6, so as to facilitate the adjustment of the position of the blocking plate 6.

[0024] refer to Figure 1 , Figure 2 Two proximity switches 10 are fixedly installed on the outer surface of the circular adjustment shell 1, and the sensing ends of the two proximity switches 10 are located inside the circular adjustment shell 1, and two induction arc iron sheets 11 are symmetrically fixedly installed on the sides of the blocking plate 6; when the blocking plate 6 is rotated to the position, the proximity switch 10 is close to the induction arc iron sheet 11, and the proximity switch 10 receives an electrical feedback signal to the controller, and the controller stops the rotation of the servo motor 9 to improve the accuracy of the blocking plate 6. The controller can be a PLC controller, and the proximity switch 10 is an existing device, which will not be described in detail here. There are many models and induction distances of the proximity switch 10, which can be selected according to the needs of on-site adjustment.

[0025] refer to Figure 1 , Figure 3 A bearing 14 is fixedly installed on the inner wall of the circular adjustment shell 1, and a connecting shaft 15 is fixedly installed in the middle of the bearing 14, and one end of the connecting shaft 15 is fixed to one side of the first connecting plate 7; through the setting of the bearing 14 and the connecting shaft 15, it is convenient to drive the first connecting plate 7 to rotate, thereby improving the stability of the first connecting plate 7 during rotation.

[0026] The implementation principle of the embodiment of the mine ventilation resistance monitoring device of the present application is as follows: the user first connects the connecting pipe 2 to the ventilation pipe inside the mine, so that the gas flowing inside the ventilation pipe can enter the interior of the circular adjustment shell 1. Under normal conditions, the blocking plate 6 will block one of the ventilation pipes 1 3 and 2 4. Figure 2 As shown, the ventilation duct 1 3 is blocked. When the blocking plate 6 blocks the ventilation duct 1 3, the gas inside the circular adjustment housing 1 will enter the inside of the ventilation duct 2 4. At this time, the differential pressure gauge 12 and the resistance sensor 13 in the resistance monitoring mechanism 5 can effectively monitor the gas flow resistance;

[0027] When the differential pressure gauge 12 and the resistance sensor 13 in the ventilation duct 2 4 fail or need maintenance, the personnel start the servo motor 9, and the servo motor 9 drives the first connecting plate 7 and the blocking plate 6 to rotate, so that the blocking plate 6 can be rotated to the position corresponding to the ventilation duct 2 4. When the blocking plate 6 is rotated and adjusted to the set position, the proximity switch 10 is energized and feeds back a signal to the controller, and the controller stops the rotation of the servo motor 9, so that the accuracy of the blocking plate 6 can be improved. When the blocking plate 6 blocks the ventilation duct 2 4, the gas inside the circular adjustment shell 1 will flow into the ventilation duct 1 3, so that the differential pressure gauge 12 and the resistance sensor 13 in the ventilation duct 1 3 can monitor the gas flow resistance, which is convenient for personnel to repair and maintain the resistance monitoring mechanism 5 in the ventilation duct 2 4, thereby improving convenience.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A mine ventilation resistance monitoring device, comprising a circular adjustment housing (1), characterized in that: A connecting pipe (2) is fixedly mounted on the outer surface of the front side of the circular adjustment shell (1); a ventilation pipe 1 (3) is fixedly mounted on the outer surface of the top of the circular adjustment shell (1); a ventilation pipe 2 (4) is fixedly mounted on the outer surface of the bottom of the circular adjustment shell (1); resistance monitoring mechanisms (5) are respectively arranged on the sides of the ventilation pipe 1 (3) and the ventilation pipe 2 (4); a blocking plate (6) is arranged inside the circular adjustment shell (1); a first connecting plate (7) is fixedly mounted on the bottom surface of the blocking plate (6); a sealing end cover (8) is fixedly mounted on the front side of the circular adjustment shell (1) by means of bolts; a sealing gasket is fixedly mounted on the side of the sealing end cover (8) close to the circular adjustment shell (1); a servo motor (9) is fixedly mounted on the front side of the sealing end cover (8); a driving end of the servo motor (9) passes through one side of the sealing end cover (8) and extends to the inside of the circular adjustment shell (1); and the driving end of the servo motor (9) is fixed to one side of the first connecting plate (7).

2. A mine ventilation resistance monitoring device as claimed in claim 1, characterized in that: Two proximity switches (10) are fixedly mounted on the outer surface of the circular adjustment housing (1), and the sensing ends of the two proximity switches (10) are located inside the circular adjustment housing (1). Two sensing arc-shaped iron sheets (11) are symmetrically fixedly mounted on the sides of the blocking plate (6).

3. A mine ventilation resistance monitoring device as claimed in claim 1, characterized in that: The resistance monitoring mechanism (5) comprises a differential pressure gauge (12) and a resistance sensor (13); the differential pressure gauge (12) is fixedly mounted on the top surface of the ventilation duct one (3) and the bottom surface of the ventilation duct two (4), respectively; and the resistance sensor (13) is fixedly mounted on one side of the ventilation duct one (3) and the ventilation duct two (4), respectively.

4. A mine ventilation resistance monitoring device as claimed in claim 1, characterized in that: A bearing (14) is fixedly mounted on the inner wall of the circular adjustment housing (1), a connecting shaft (15) is fixedly mounted in the middle of the bearing (14), and one end of the connecting shaft (15) is fixed to one side of the first connecting plate (7).

5. A mine ventilation resistance monitoring device as claimed in claim 1, characterized in that: A rubber sealing pad (16) is fixedly mounted on the top surface of the blocking plate (6).

6. A mine ventilation resistance monitoring device as claimed in claim 1, characterized in that: A second connecting plate (17) is fixedly mounted on the outer surface of one end of the connecting pipe (2) away from the circular adjusting housing (1).

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