Linkage frequency conversion speed regulation device of underground main coal flow transportation system

Abstract

The utility model relates to the technical field of coal mine transportation, in particular to a linkage frequency conversion speed regulation device of an underground main coal flow transportation system. According to the technical scheme, the device comprises a conveying frame, a liquid storage box, a gas filtering box and a machine box, and the machine box is installed on the rear end face of the conveying frame; a variable-frequency driving mechanism is installed in the case, a second cooling fin is installed on the variable-frequency driving mechanism, and a coil pipe is installed in the second cooling fin; a driving wheel is arranged on an output shaft of the variable frequency driving mechanism, and a conveying belt is arranged on the driving wheel; an air filter box is mounted on the case, and a filter screen is arranged in the air filter box through a limiting frame; an air pump is installed on the side end face of the air filtering box. The case is in gas communication with the gas filtering box through a connecting pipe; first cooling fins are installed on the front end face of the liquid storage box in an embedded mode, and a water pump is installed in the liquid storage box. According to the utility model, underground coal mine conveying is met, the variable-frequency driving mechanism is cooled during conveying, and the driving mechanism is prevented from being influenced by underground raised dust.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine transportation technical field, concretely is a kind of underground main coal flow transportation system linkage variable frequency speed regulation device. BACKGROUND

[0002] Coal mine is the area that human extracts coal resources in coal-rich mining area, generally divided into underground coal mine and open coal mine. When coal bed is far from ground surface, generally selects to excavate roadway to extract coal, which is underground coal mine. When the distance of coal bed from ground surface is very close, generally selects to directly strip ground surface soil layer to excavate coal, which is open coal mine.

[0003] After mining in underground coal mine, belt conveyor is generally used for linkage conveying, but during conveying, due to complex underground environment, directly using fan to intake and radiate heat can easily cause underground dust to adhere to driving mechanism, causing temperature rise, so underground transportation mechanism needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of underground main coal flow transportation system linkage variable frequency speed regulation device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of underground main coal flow transportation system linkage variable frequency speed regulation device, including conveying frame, liquid storage tank, filter gas tank and machine case,

[0006] The rear end surface of conveying frame is installed with machine case;

[0007] Frequency conversion driving mechanism is installed in machine case, and heat sink two is installed on frequency conversion driving mechanism, and coil pipe is installed in heat sink two;

[0008] Driving wheel is provided on the output shaft of frequency conversion driving mechanism, and conveying belt is provided on driving wheel;

[0009] Filter gas tank is installed on machine case, and filter screen is provided in filter gas tank by limiting frame;

[0010] Air pump is installed on the side end surface of filter gas tank;

[0011] Machine case is in gas communication with filter gas tank by connecting pipe;

[0012] Heat sink one is embeddedly installed on the front end surface of liquid storage tank, and water pump is installed in liquid storage tank;

[0013] Water pump is in liquid communication with coil pipe by water inlet pipe.

[0014] Preferably, the inner wall of the conveying frame is provided with bearings at both ends, the bearings are provided with driven wheels, and the driven wheels support the conveying belt.

[0015] Preferably, the bottom end surface of the conveying frame is welded with a support frame, and the bottom end surface of the support frame is provided with a mounting base.

[0016] Preferably, the air pump is provided with an air inlet pipe one and an air inlet pipe two, and the air inlet pipe two is embedded in the filter tank at one end away from the air pump.

[0017] Preferably, the side end surface of the case is embedded with an exhaust pipe, and the exhaust pipe is in gas communication with the case.

[0018] Preferably, the one end of the coil pipe away from the water inlet pipe is embedded with a water outlet pipe, and the one end of the water outlet pipe away from the coil pipe is embedded in the liquid storage tank.

[0019] Preferably, the top end surface of the liquid storage tank is embedded with a filling pipe, and the filling pipe is provided with a cover plate.

[0020] Preferably, the both ends of the liquid storage tank are provided with mounting frames, and the one end of the mounting frame away from the liquid storage tank is mounted on the case.

[0021] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0022] 1. This utility model, by setting up a conveyor frame, allows personnel to place mined coal onto the conveyor belt during the transport of the main coal flow underground. After placement, personnel can activate the frequency converter drive mechanism to rotate the drive wheel. The rotation of the drive wheel drives the coal on the conveyor belt for coordinated transport. During coordinated transport, the frequency converter drive mechanism can adjust the speed using frequency conversion. When the frequency converter drive mechanism is in use, it can be equipped with an air pump. When the air pump is started, air can be introduced through the first air inlet pipe and discharged into the air filter box through the second air inlet pipe. The gas can be filtered through the filter screen in the air filter box and then discharged into the machine housing through the connecting pipe. The gas entering the machine housing can be discharged through the exhaust pipe, thereby allowing the frequency converter drive mechanism to be cooled down and avoiding the direct intake of air for cooling, which would cause underground dust to adhere and affect subsequent transport.

[0023] 2. By setting up a liquid storage tank, this utility model allows personnel to draw cooling water from the liquid storage tank during the transportation of the main coal flow underground. This prevents the variable frequency drive mechanism from overheating due to air cooling alone. Instead, personnel can turn on the water pump to inject the cooling water from the liquid storage tank into the coil through the inlet pipe. The cooling water flowing through the coil cools the heat sink 2. The flowing water can be discharged back into the liquid storage tank through the outlet pipe for recycling. The water flowing into the liquid storage tank can also be cooled by the heat sink 1. This allows for secondary cooling of the variable frequency drive mechanism during coal transportation, preventing the variable frequency drive mechanism from overheating and affecting the coordinated transportation of the main coal flow. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0025] Figure 2 This is a top view of the structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the rear view structure of this utility model;

[0027] Figure 4 This is a side view of the structure of this utility model;

[0028] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0029] In the diagram: 1. Support frame; 2. Mounting base; 3. Conveying frame; 4. Liquid storage tank; 5. Mounting bracket; 6. Air inlet pipe one; 7. Air pump; 8. Air inlet pipe two; 9. Air filter box; 10. Chassis; 11. Conveyor belt; 12. Drive wheel; 13. Driven wheel; 14. Bearing; 15. Filling pipe; 16. Water inlet pipe; 17. Water outlet pipe; 18. Heat sink one; 19. Exhaust pipe; 20. Connecting pipe; 21. Cover plate; 22. Filter screen; 23. Limiting bracket; 24. Coil; 25. Heat sink two; 26. Water pump; 27. Variable frequency drive mechanism. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Embodiment one

[0032] As Figures 1-5 shown, the utility model provides a kind of linkage variable frequency speed regulation device of underground main coal flow transport system, including conveying frame 3, liquid storage tank 4, filter gas tank 9 and machine box 10,

[0033] The rear end surface of conveying frame 3 is equipped with machine box 10;

[0034] Frequency conversion driving mechanism 27 is installed in machine box 10, and heat sink two 25 is installed on frequency conversion driving mechanism 27, and coil pipe 24 is installed in heat sink two 25;

[0035] The output shaft of frequency conversion driving mechanism 27 is provided with driving wheel 12, and conveying belt 11 is provided on driving wheel 12;

[0036] Filter gas tank 9 is installed on machine box 10, and filter screen 22 is provided in filter gas tank 9 by limiting frame 23;

[0037] Air pump 7 is installed on the side end surface of filter gas tank 9;

[0038] Machine box 10 is in gas communication with filter gas tank 9 by connecting pipe 20;

[0039] Heat sink one 18 is embedded and installed on the front end surface of liquid storage tank 4, and water pump 26 is installed in liquid storage tank 4;

[0040] Water pump 26 is in liquid communication with coil pipe 24 by water inlet pipe 16.

[0041] Bearing 14 is installed in the inner wall both ends of conveying frame 3, driven wheel 13 is installed in bearing 14, and driven wheel 13 supports conveying belt 11, and when frequency conversion driving mechanism 27 drives conveying belt 11 to rotate by driving wheel 12, conveying belt 11 is supported and used by driven wheel 13.

[0042] Support frame 1 is welded on the bottom end surface of conveying frame 3, and mounting base 2 is installed on the bottom end surface of support frame 1, and conveying frame 3 can be supported and installed by support frame 1 and mounting base 2.

[0043] The air pump 7 is provided with an air inlet pipe one 6 and an air inlet pipe two 8, and the air inlet pipe two 8 is embedded and fixed in the air filter box 9 at the end away from the air pump 7, so that the air pump 7 can inhale air through the air inlet pipe one 6 and discharge the air into the air filter box 9 through the air inlet pipe two 8 when the air pump 7 is started.

[0044] The side end surface of the machine box 10 is embedded and fixed with an exhaust pipe 19, and the exhaust pipe 19 is in gas communication with the machine box 10, so that the gas entering the machine box 10 can be discharged through the exhaust pipe 19.

[0045] Based on example 1: when the workers carry out the underground main coal flow transportation operation, they can place the mined coal on the conveyor belt 11. Then, the variable frequency driving mechanism 27 is started to drive the driving wheel 12 to rotate. The rotation of the driving wheel 12 further drives the coal on the conveyor belt 11 to realize continuous linkage conveying. In the linkage conveying process of the coal, the variable frequency driving mechanism 27 can adjust the rotating speed by using the variable frequency technology to meet different transportation requirements. At the same time, in order to guarantee the operation of the variable frequency driving mechanism 27, the air pump 7 can be used in matching. When the air pump 7 is started, it inhales air through the air inlet pipe one 6 and introduces the air into the air filter box 9 through the air inlet pipe two 8. In the air filter box 9, the gas is filtered by the filter screen 22 to ensure the normal air inlet into the machine box 10. The filtered gas then smoothly enters the machine box 10 through the connecting pipe 20 and is finally discharged through the exhaust pipe 19. This process not only provides effective cooling effect for the variable frequency driving mechanism 27, but also avoids the problem of dust adhesion in the underground caused by direct air inlet cooling, so as to ensure the smooth progress of the later conveying operation.

[0046] Example two

[0047] As Figures 1-5 shown, the linkage variable frequency speed regulation device of the underground main coal flow transportation system further comprises a conveying frame 3, a liquid storage tank 4, an air filter box 9 and a machine box 10,

[0048] The rear end surface of the conveying frame 3 is installed with the machine box 10;

[0049] The machine box 10 is installed with the variable frequency driving mechanism 27, and the variable frequency driving mechanism 27 is installed with the second heat dissipation fin 25, and the second heat dissipation fin 25 is installed with the coil pipe 24;

[0050] The output shaft of the variable frequency driving mechanism 27 is provided with the driving wheel 12, and the driving wheel 12 is provided with the conveyor belt 11;

[0051] The machine box 10 is installed with the air filter box 9, and the air filter box 9 is provided with the filter screen 22 through the limiting frame 23;

[0052] The side end surface of the air filter box 9 is installed with the air pump 7;

[0053] The cabinet 10 is in gas communication with the filter tank 9 through the connecting pipe 20.

[0054] The front end surface of the liquid storage tank 4 is embedded with the heat dissipation fin 18, and the water pump 26 is installed in the liquid storage tank 4.

[0055] The water pump 26 is in liquid communication with the coil pipe 24 through the water inlet pipe 16.

[0056] And as is well known to those skilled in the art, the variable frequency drive mechanism 27, the air pump 7 and the water pump 26 are provided as usual, and the variable frequency drive mechanism 27, the air pump 7 and the water pump 26 can be controlled by external power supply and external control switch, which all belong to conventional means or common knowledge, and will not be described here. Those skilled in the art can make any selection according to their needs or convenience. The variable frequency drive mechanism 27 drives the driving wheel 12 to rotate.

[0057] The end of the coil pipe 24 away from the water inlet pipe 16 is embedded with the water outlet pipe 17, and the end of the water outlet pipe 17 away from the coil pipe 24 is embedded in the liquid storage tank 4. The cooling water in the coil pipe 24 can be circulated and used by the water outlet pipe 17, and the water in the liquid storage tank 4 can be cooled by the heat dissipation fin 18.

[0058] The top end surface of the liquid storage tank 4 is embedded with the filling pipe 15, and the filling pipe 15 is provided with the cover plate 21. The cooling water used for heat exchange can be filled into the liquid storage tank 4 through the filling pipe 15, and the cover plate 21 can be installed after storage to close the filling pipe 15.

[0059] The two ends of the liquid storage tank 4 are provided with the mounting bracket 5, and the end of the mounting bracket 5 away from the liquid storage tank 4 is installed on the cabinet 10. The liquid storage tank 4 can be installed on the cabinet 10 through the mounting bracket 5.

[0060] Based on example 2: in the transportation process of the main coal flow in the well, in order to ensure that the variable frequency driving mechanism 27 can operate stably without causing the temperature to rise too fast due to single air cooling, the operator can take other cooling measures. Specifically, they can start the water pump 26, draw cooling water from the liquid tank 4, and inject it into the coil pipe 24 through the water inlet pipe 16. The cooling water in the coil pipe 24 will circulate and fully cool the cooling fin 25. After cooling, the water will be drained back to the liquid tank 4 through the water outlet pipe 17 to realize recycling. It is worth noting that when these water bodies reflow into the liquid tank 4, they will also be further cooled by the cooling fin 18, so as to ensure that the temperature is always within the appropriate range. Through such a secondary cooling mechanism, the coal mine can ensure that the variable frequency driving mechanism 27 always maintains a reasonable temperature level during transportation, effectively avoiding the situation that the linkage transportation of the main coal flow is adversely affected due to high temperature. This not only improves the transportation efficiency, but also ensures the stability and safety of the entire transportation system.

[0061] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An underground main coal flow transportation system linkage variable frequency speed regulation device, comprising a conveying frame (3), a liquid storage tank (4), a gas filter tank (9) and a machine box (10), characterized in that: the rear end face of the conveying frame (3) is provided with the machine box (10); the machine box (10) is provided with a variable frequency drive mechanism (27), and the variable frequency drive mechanism (27) is provided with a second heat sink (25), and the second heat sink (25) is provided with a coil pipe (24); the output shaft of the variable frequency drive mechanism (27) is provided with a driving wheel (12), and the driving wheel (12) is provided with a conveying belt (11); the machine box (10) is provided with the gas filter tank (9), and the gas filter tank (9) is provided with a filter screen (22) through a limiting frame (23); the side end face of the gas filter tank (9) is provided with an air pump (7); the machine box (10) is in gas communication with the gas filter tank (9) through a connecting pipe (20); the front end face of the liquid storage tank (4) is embedded with a first heat sink (18), and the liquid storage tank (4) is provided with a water pump (26); the water pump (26) is in liquid communication with the coil pipe (24) through a water inlet pipe (16).

2. The linkage variable frequency speed regulation device of the downhole main coal flow transportation system according to claim 1, characterized in that: both ends of the inner wall of the conveying frame (3) are provided with bearings (14), the bearings (14) are provided with driven wheels (13), and the driven wheels (13) support the conveying belt (11).

3. The linkage variable frequency speed regulation device of a main coal flow transportation system in a coal mine according to claim 1 or 2, characterized in that: the bottom end face of the conveying frame (3) is welded with a support frame (1), and the bottom end face of the support frame (1) is provided with a mounting base (2).

4. The linkage variable frequency speed regulation device of the downhole main coal flow transportation system according to claim 1, characterized in that: the air pump (7) is provided with an air inlet pipe (6) and an air inlet pipe (8), and one end of the air inlet pipe (8) away from the air pump (7) is embedded and fixed in the gas filter tank (9).

5. The linkage variable frequency speed regulating device of the downhole main coal flow transportation system according to claim 1, characterized in that: the side end face of the machine box (10) is embedded and fixed with an exhaust pipe (19), and the exhaust pipe (19) is in gas communication with the machine box (10).

6. The linkage variable frequency speed regulation device of the downhole main coal flow transportation system according to claim 1, characterized in that: one end of the coil pipe (24) away from the water inlet pipe (16) is embedded and fixed with a water outlet pipe (17), and one end of the water outlet pipe (17) away from the coil pipe (24) is embedded and fixed in the liquid storage tank (4).

7. The linkage variable frequency speed regulating device of the downhole main coal flow transportation system according to claim 1, characterized in that: the top end face of the liquid storage tank (4) is embedded and fixed with a filling pipe (15), and the filling pipe (15) is provided with a cover plate (21).

8. The linkage variable frequency speed regulation device of the downhole main coal flow transportation system according to claim 1, characterized in that: both ends of the liquid storage tank (4) are provided with mounting frames (5), and one end of the mounting frame (5) away from the liquid storage tank (4) is mounted on the machine box (10).

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