Pneumatic dredging device for dredging coal bunker

Abstract

The utility model discloses a pneumatic dredging device for dredging a coal bunker, and belongs to the technical field of coal bunker dredging. A pneumatic dredging device for dredging a coal bunker comprises a winding mechanism and an air source processing mechanism, a shell is arranged at the output end of the winding mechanism, a beating cavity is formed in the shell, the air source processing mechanism is communicated with the beating cavity through a reversing valve, and a driving hammer is arranged in the beating cavity; the dowel bar is matched with the driving hammer, one end of the dowel bar extends into the striking cavity, and the other end of the dowel bar extends out of the shell and is fixedly provided with a tool bit; according to the utility model, the base is pushed to the edge of the blanking port at the top of the coal bunker, the shell is lowered into the coal bunker along the tensile gas pipe, compressed gas is introduced, the dowel bar drives the tool bit to do downward reciprocating motion for crushing, and the shell continuously drills downwards, so that the dredging speed is high, the dredging efficiency is improved, the use is safe, and the working intensity and the working environment are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal bunker dredging, in particular to a pneumatic dredging device for dredging coal bunkers. Background Art

[0002] In industrial production, coal bunkers are a crucial link in coal storage and supply, and their smooth operation is directly related to the efficiency and stability of the entire production line. However, due to friction and adhesion between coal particles, uneven moisture and particle size distribution, or poor airflow within the bunker can easily lead to an arch bridge effect, causing coal blockage. Coal accumulation in bunkers not only hinders normal coal transportation and increases energy consumption, but can also cause production interruptions, equipment damage, and even safety accidents. Long-term coal accumulation can also easily lead to spontaneous combustion, releasing harmful gases and threatening personnel safety and environmental quality.

[0003] At present, in the face of the problem of coal accumulation in coal bunkers, traditional methods such as manual clearing, mechanical vibration, and air cannon impact are often used for dredging. Although these methods can alleviate the problem of coal accumulation to a certain extent, they have many limitations: Manual clearing: labor intensity is high, the working environment is harsh, there are safety risks, and the efficiency is low, making it difficult to deal with large-scale coal accumulation. Mechanical vibration: The vibration effect is limited, and it is not effective for hardened or deep coal accumulation, and long-term vibration may cause damage to the bunker structure. Air cannon impact: Although it can release energy quickly, the impact force is difficult to control accurately, which may cause impact damage to surrounding equipment, and frequent use will increase maintenance costs. Utility Model Content

[0004] The purpose of the utility model is to solve the problems of high labor intensity, poor dredging effect and easy damage to surrounding equipment in the prior art, and to propose a pneumatic dredging device for dredging coal bunkers.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pneumatic dredging device for dredging a coal bunker comprises a winding mechanism and an air source processing mechanism, wherein a shell is provided at the output end of the winding mechanism, a striking chamber is provided in the shell, the air source processing mechanism is connected to the striking chamber via a reversing valve, and a hammer is provided in the striking chamber; a force transmission rod cooperates with the hammer, one end of the force transmission rod extends into the striking chamber, and the other end of the force transmission rod extends out of the shell and is fixed with a cutter head.

[0007] In order to facilitate the reciprocating motion of the force transmission rod, preferably, an installation cavity is opened in the shell, the force transmission rod is slidably arranged in the installation cavity, a limit plate is provided in the installation cavity, the limit plate is fixedly connected to the force transmission rod, and a spring is provided on the force transmission rod, and the two ends of the spring are respectively against the limit plate and the installation cavity.

[0008] In order to facilitate the winding of the anti-tensile air pipe, preferably, the winding mechanism includes a base with walking wheels, a mounting plate on the base, a reel is rotatably provided on the mounting plate, and the anti-tensile air pipe is wound on the reel, an air inlet connected to the P port of the reversing valve is opened at one end of the shell, one end of the anti-tensile air pipe is connected to the air inlet, and the other end of the anti-tensile air pipe is connected to the output end of the air source processing mechanism, and a driving part for driving the reel to rotate is provided on the base.

[0009] In order to facilitate the driving of the reel to rotate, the driving part further includes an air motor fixedly mounted on the mounting plate, a reducer fixedly mounted on the mounting plate, the output end of the air motor is connected to the input end of the reducer, the rotating shaft of the reel is connected to the output end of the reducer, and a handle valve for changing the direction of the air motor is fixedly mounted on the mounting plate.

[0010] Furthermore, a sliding rod is fixedly provided on the mounting plate, a cable arranger for arranging the tensile-resistant air pipe is slidably provided on the sliding rod, a rotating shaft is fixedly provided on the mounting plate, a reciprocating screw is fixedly provided at one end of the rotating shaft, the cable arranger is threadedly connected to the reciprocating screw, and a first sprocket is fixedly provided on the rotating shaft, a second sprocket is fixedly provided on the rotating shaft, and the first sprocket is meshed with the second sprocket through a chain.

[0011] Furthermore, the air source processing mechanism includes a pneumatic triplet, a rotary joint is fixedly provided on the mounting plate, the other end of the tensile air pipe is connected to the rotary joint, an air inlet pipe is fixedly provided at one end of the pneumatic triplet, and the other end of the pneumatic triplet is connected to the rotary joint through a connecting pipe.

[0012] Compared with the prior art, the present invention provides a pneumatic dredging device for coal bunker dredging, which has the following beneficial effects:

[0013] 1. This pneumatic dredging device for coal bunker dredging is designed to push the base to the edge of the coal bunker top dropout, lower the shell into the coal bunker along the tensile air pipe, and when the cutter head reaches the coal surface, compressed gas is introduced into the air inlet pipe. The hammer inside the shell reciprocates to hit the force transmission rod, which drives the cutter head downward to break the coal and causes the shell to continuously drill downward to dredge the coal. The dredging speed is fast, the dredging efficiency is improved, the use is safe, the working intensity and working environment are greatly improved, and the use effect is improved.

[0014] 2. The pneumatic dredging device for dredging coal bunkers is provided with a reel rotatably arranged on the base, and a tensile air pipe is wound on the reel, which facilitates the hoisting of the shell into the coal bunker. Moreover, after use, the tensile air pipe can be wound up to improve the use effect.

[0015] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model pushes the base to the edge of the drop port on the top of the coal bin, lowers the shell into the coal bin along the tensile air pipe, introduces compressed gas, and the force transmission rod drives the cutter head to move back and forth downward to crush, and makes the shell continue to drill downward, which has a fast dredging speed, improves dredging efficiency, is safe to use, and greatly improves work intensity and working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a pneumatic dredging device for dredging coal bunkers proposed in this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of a pneumatic dredging device for dredging coal bunkers proposed in this utility model. Figure 2 ;

[0018] Figure 3 This is a schematic structural diagram of the shell of a pneumatic dredging device for dredging a coal bunker proposed in the present invention;

[0019] Figure 4 The utility model is a schematic structural diagram of a cutter head of a pneumatic dredging device for dredging a coal bunker.

[0020] In the figure: 1. Base; 101. Mounting plate; 2. Reel; 201. Tensile air pipe; 3. Reducer; 4. Pneumatic motor; 401. Handle valve; 5. Housing; 501. Striking chamber; 502. Hammer; 503. Reversing valve; 504. Air inlet; 505. Mounting chamber; 6. Force transmission rod; 601. Limit plate; 602. Spring; 603. Leading seat; 604. Cutting head; 7. Pneumatic triplex; 701. Air inlet pipe; 702. Rotary joint; 8. Cable arranger; 801. Reciprocating screw; 802. Sliding rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] Example:

[0024] Reference Figures 1-4 , a pneumatic dredging device for dredging a coal bunker, comprising a winding mechanism and an air source processing mechanism, wherein a shell 5 is provided at the output end of the winding mechanism, a striking chamber 501 is opened in the shell 5, the air source processing mechanism is connected to the striking chamber 501 through a reversing valve 503, and a hammer 502 is provided in the striking chamber 501, and the reversing valve 503 preferably adopts a two-position four-way electromagnetic reversing valve 503. When in use, when the hammer 502 is at the upper part of the striking chamber 501, the air flow enters the reversing valve 503 through the air inlet 504, and the air flow into the upper part of the striking chamber 501 pushes the hammer 502 to slide, and the tail of the hammer 502 pushes the hammer 502 forward to hit the force transmission rod 6, which can move downward with the cutter head 604 to break the blockage position and make the shell 5 continuously drill downward to achieve the dredging effect. ; When the hammer 502 runs to the lower part of the striking chamber 501, the reversing valve 503 is reversed, allowing the gas to enter the lower part of the striking chamber 501. At this time, the gas can push the hammer 502 back from the head of the hammer 502. After the hammer 502 returns, the reversing valve 503 is reset, so that the hammer 502 can continue to reciprocate; and a force transmission rod 6 is provided in the shell 5 to match the hammer 502, and one end of the force transmission rod 6 is extended into the striking chamber 501, and the other end of the force transmission rod 6 extends out of the shell 5 and is fixed with a cutter head 604, and a leading guide seat 603 is installed on the force transmission rod 6, one end of the leading guide seat 603 is abutted against the step surface of the force transmission rod 6, and the cutter head 604 is fixed to the force transmission rod 6 by a nut, so that the cutter head 604 is abutted against the other end of the leading guide seat 603, thereby fixing the cutter head 604.

[0025] During use, the base 1 is pushed to the edge of the discharge port at the top of the coal bin, and the shell 5 is lowered into the coal bin along the tensile air pipe 201. When the cutter head 604 reaches the coal surface, compressed gas is introduced into the air inlet pipe 701. The hammer 502 inside the shell 5 reciprocates to hit the force transmission rod 6. The force transmission rod 6 drives the cutter head 604 to move downward to crush it, and causes the shell 5 to drill downward continuously to achieve dredging. The dredging speed is fast, the dredging efficiency can be improved, and it is safe to use. It greatly improves the working intensity and working environment, and improves the use effect.

[0026] Reference Figure 3 and Figure 4A mounting cavity 505 is provided in the shell 5, and the force transmission rod 6 is slidably provided in the mounting cavity 505. A limit plate 601 is provided in the mounting cavity 505, and the limit plate 601 is fixedly connected to the force transmission rod 6. A spring 602 is sleeved on the force transmission rod 6, and the two ends of the spring 602 are respectively against the limit plate 601 and the mounting cavity 505. When in use, by sleeved on the force transmission rod 6, when the hammer 502 pushes the force transmission rod 6 out, the spring 602 can drive the force transmission rod 6 to reset, thereby making the force transmission rod 6 reciprocate.

[0027] Reference Figure 1-Figure 3 Here, we design the winding mechanism as a base 1 with a traveling wheel. The traveling wheel is preferably a universal wheel with a self-locking part, and an armrest is fixedly provided on the base 1. When in use, the base 1 is convenient for movement and flexibility is improved. A mounting plate 101 is fixedly provided on the base 1, a reel 2 is rotatably provided on the mounting plate 101, and a tensile air pipe 201 is provided on the reel 2 for winding. An air inlet 504 connected to the P port of the reversing valve 503 is provided on one end of the shell 5. One end of the tensile air pipe 201 is connected to the air inlet 504, and the other end of the tensile air pipe 201 is connected to the output end of the air source processing mechanism. A driving part for driving the reel 2 to rotate is provided on the base 1; and the air source processing mechanism includes a pneumatic triplet 7, a rotary joint 702 is fixedly provided on the mounting plate 101, and the other end of the tensile air pipe 201 is connected to the rotary joint 702. The pneumatic triplet 7 An air inlet pipe 701 is fixedly provided at one end, and the other end of the pneumatic triplet 7 is connected to the rotary joint 702 through a connecting pipe. Through the rotary joint 702, it can be ensured that during the rotation of the reel 2, air can also be supplied to the air inlet 504. When in use, compressed air can be introduced into the air inlet pipe 701 to realize the connection of the other end of the pneumatic triplet 7 to the rotary joint 702 through the connecting pipe to the striking chamber 501. When in use, the reel 2 is rotated on the base 1, and the anti-tensile air pipe 201 is wound on the reel 2, which makes it convenient to hoist the shell 5 into the coal bin, and after use, the anti-tensile air pipe 201 can be wound to improve the use effect.

[0028] Reference Figure 1Here, the driving part includes an air motor 4 fixedly provided on the mounting plate 101, a reducer 3 fixedly provided on the mounting plate 101, the output end of the air motor 4 is connected to the input end of the reducer 3, the rotating shaft of the reel 2 is connected to the output end of the reducer 3, and a handle valve 401 for changing the direction of the air motor 4 is fixedly provided on the mounting plate 101. When in use, by introducing gas into the air motor 4, the air motor 4 can rotate with the reel 2 through the reducer 3 to realize the unwinding of the reel 2. By pulling the handle valve 401, the rotation direction of the air motor 4 can be changed, thereby driving the reel 2 to be reeled, and a pneumatic adjustment knob for adjusting the air intake amount of the air motor 4 is fixedly provided on the mounting plate 101, which facilitates the adjustment of the speed of the air motor 4 and improves the use effect.

[0029] Reference Figure 1 A sliding rod 802 is fixedly provided on the mounting plate 101, and a cable arranger 8 for arranging the anti-tensile air tube 201 is slidably provided on the sliding rod 802, that is, the anti-tensile air tube 201 passes through the cable arranger 8, and a rotating shaft is fixedly provided on the mounting plate 101, and a reciprocating screw 801 is fixedly provided on one end of the rotating shaft. The cable arranger 8 is threadedly connected to the reciprocating screw 801. When in use, the rotating shaft is driven by the driving assembly to rotate the reciprocating screw 801, which can drive the cable arranger 8 to slide back and forth along the axis of the sliding rod 802. During the winding process, driven by the cable arranger 8, the anti-tensile air tube 201 can be wound more evenly around the reel 2, thereby improving the use effect. The rotating shaft can be driven to rotate by hand crank or motor. Here, we design the driving component to have a first sprocket fixed on the rotating shaft, and a second sprocket fixed on the rotating shaft. The first sprocket is meshed with the second sprocket through a chain. When in use, when the reel 2 is wound, the second sprocket, the rotating shaft and the reciprocating screw 801 can be driven to rotate through the first sprocket and the chain, thereby driving the cable arranger 8 to slide back and forth for cable management, thereby improving the use effect.

[0030] During use, the dredging device is first transported to the edge of the top opening of the coal bunker to be dredged. Compressed air is then introduced into the air inlet of the pneumatic motor 4. After being filtered by a filter and pressure regulator, the compressed air is controlled by a handle valve 401 to drive the pneumatic motor 4. The pneumatic motor 4, via a reducer 3, rotates the reel 2, unwinding the tensile air tube 201 wound around the reel 2 and hoisting the housing 5 into the coal bunker. When the housing 5 reaches the coal surface, compressed air is introduced into the tensile air tube 201, causing the hammer 502 within the housing 5 to activate. During operation, the hammer 502 within the housing 5 reciprocates, striking the force transmission rod 6. The force transmission rod 6 drives the cutter head 604 downward, breaking the coal and allowing the housing 5 to continue drilling downward. When dredging is complete, the handle valve 401 is rotated to reverse the rotation of the reel 2, lifting the housing 5. The rotation of the reel 2 drives the wire arranging device 8 to reciprocate, evenly and smoothly winding the tensile air tube 201 onto the reel 2. The advantages are: the equipment is safe to operate, as it is entirely driven by compressed air, does not require power supply, and does not generate electric sparks, so it is suitable for scenarios with harmful gases such as methane; the dredging speed is fast, as this equipment does not require workers to enter the coal bunker and the pneumatic dredge drills in quickly, greatly improving the dredging efficiency; the operation is safe for workers, as this equipment only requires workers to connect compressed air and control the air valve at the top of the coal bunker, greatly improving the work intensity and working environment, and ensuring the safety of workers.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pneumatic dredging device for dredging coal bunkers, characterized in that: Including winding mechanism and air source processing mechanism, The output end of the winding mechanism is provided with a housing (5), a striking chamber (501) is provided in the housing (5), the air source processing mechanism is connected to the striking chamber (501) via a reversing valve (503), and a hammer (502) is provided in the striking chamber (501); A force transmission rod (6) matched with the hammer (502) has one end extending into the striking cavity (501) and the other end extending out of the housing (5) and fixedly provided with a cutter head (604).

2. A pneumatic dredging device for dredging coal bunkers according to claim 1, characterized in that: An installation cavity (505) is provided in the housing (5), the force transmission rod (6) is slidably provided in the installation cavity (505), a limit plate (601) is provided in the installation cavity (505), the limit plate (601) is fixedly connected to the force transmission rod (6), and a spring (602) is sleeved on the force transmission rod (6), with two ends of the spring (602) respectively abutting against the limit plate (601) and the installation cavity (505).

3. A pneumatic dredging device for dredging coal bunkers according to claim 1, characterized in that: The winding mechanism comprises a base (1) with a walking wheel, a mounting plate (101) on the base (1), a reel (2) rotatably provided on the mounting plate (101), a tensile air pipe (201) being wound on the reel (2), an air inlet (504) connected to the P port of the reversing valve (503) being provided at one end of the shell (5), one end of the tensile air pipe (201) being connected to the air inlet (504), the other end of the tensile air pipe (201) being connected to the output end of the air source processing mechanism, and a driving unit for driving the reel (2) to rotate being provided on the base (1).

4. A pneumatic dredging device for dredging coal bunkers according to claim 3, characterized in that: The driving unit comprises an air motor (4) fixedly mounted on the mounting plate (101), a reducer (3) fixedly mounted on the mounting plate (101), an output end of the air motor (4) being connected to an input end of the reducer (3), a rotating shaft of the reel (2) being connected to the output end of the reducer (3), and a handle valve (401) for changing the direction of the air motor (4) being fixedly mounted on the mounting plate (101).

5. A pneumatic dredging device for dredging coal bunkers according to claim 4, characterized in that: A sliding rod (802) is fixedly provided on the mounting plate (101), and a cable arranger (8) for arranging the tensile-resistant air pipe (201) is slidably provided on the sliding rod (802). A rotating shaft is fixedly provided on the mounting plate (101), and a reciprocating screw (801) is fixedly provided at one end of the rotating shaft. The cable arranger (8) is threadedly connected to the reciprocating screw (801), and a first sprocket is fixedly provided on the rotating shaft, and a second sprocket is fixedly provided on the rotating shaft, and the first sprocket is meshed with the second sprocket through a chain.

6. A pneumatic dredging device for dredging coal bunkers according to claim 5, characterized in that: The air source processing mechanism includes a pneumatic triplet (7), a rotary joint (702) is fixedly provided on the mounting plate (101), the other end of the tensile-resistant air pipe (201) is connected to the rotary joint (702), an air inlet pipe (701) is fixedly provided at one end of the pneumatic triplet (7), and the other end of the pneumatic triplet (7) is connected to the rotary joint (702) via a connecting pipe.

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