Coal sample crushing assembly and crusher

Abstract

The coal sample crushing assembly comprises a U-shaped support, a connecting rod is connected to the support in a rotating mode, a connecting piece is connected to the connecting rod, a pneumatic motor is detachably connected to the lower end of the connecting piece, an air inlet and an air outlet are formed in the pneumatic motor in a left-right mode, and a lower connecting base is fixed to the outer wall of the pneumatic motor. An upper connecting base is arranged on the outer wall of the connecting piece, a cooling base is arranged at the upper end of the connecting piece, a hopper is fixed to the upper end of the cooling base, a sealing cover is arranged at the upper end of the hopper, a hoop is arranged on the outer wall of the sealing cover, a plurality of connecting assemblies are arranged between the upper connecting base and the lower connecting base along the circumference, and the upper connecting base and the lower connecting base are connected through the connecting assemblies. When high-pressure cooling gas enters through the gas inlet, the pneumatic motor is driven to work, meanwhile, part of the gas enters the cavity of the connecting piece through the lower gas channel, the channel and the upper gas channel, the cooling base is cooled, then the hopper is cooled, and the temperature of pulverized coal in the hopper is prevented from being too high.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverizers, in particular to a coal sample pulverizing component and a pulverizer. Background Art

[0002] Gas coal samples are specifically collected to determine the gas composition and content in coal seams. They are collected in boreholes or tunnels using a sealed sampler to determine gas composition (carbon dioxide, nitrogen, methane, etc.) and the gas content per gram of combustible material. These samples are crucial data for evaluating coal mine gas content and gas grade, and are also a crucial reference for coal mine well design. To test the gas content in coal samples, a fixed amount of coal is taken, crushed into particles, and then crushed in a closed pulverizer. Testing is continued until the instantaneous flow rate is less than 2, and the test is terminated after a 3-minute wait.

[0003] The existing crusher will encounter the following problems during use:

[0004] 1. When crushing coal samples, since the crushing knife is located at the bottom of the hopper, some coal samples cannot be completely crushed, resulting in inaccurate detection of the gas content in the coal samples.

[0005] 2. When crushing coal samples, the crushing knife will hit and rub the coal samples, which will cause the hopper to heat up. When the hopper is hot, the coal powder in the hopper may spontaneously combust, causing danger. Utility Model Content

[0006] In view of the above problems, the utility model provides a coal sample crushing assembly and a crusher, which solve the above problems.

[0007] The cam is secured to the bottom of the air duct, and the air duct is secured to the bottom of the air duct by a spring, and the air duct is connected to the top of the air duct by a spring.

[0008] Preferably, a sealing ring is provided between the lower connecting seat and the upper connecting seat, a cavity is provided inside the pneumatic motor, the air inlet and the air outlet are connected to the cavity of the pneumatic motor, and the lower air duct is connected to the cavity of the pneumatic motor.

[0009] Preferably, a chamber is provided inside the connecting piece, and the upper airway is communicated with the chamber of the connecting piece.

[0010] Preferably, the lower air duct passes through the lower connecting seat up and down, and the upper air duct passes through the upper connecting seat up and down. The connecting assembly includes a bolt, and the bolt connects the lower connecting seat and the upper connecting seat through the lower air duct and the upper air duct. A U-shaped channel is opened inside the bolt, and the channel is connected to the upper air duct and the lower air duct. The aperture of the lower air duct, the upper air duct and the bolt at the contact point becomes larger.

[0011] Preferably, the air inlet and the air outlet are tangentially connected to the cavity of the pneumatic motor.

[0012] A coal sample crushing assembly, wherein the output end of the pneumatic motor passes through the lower connecting seat and is connected to a U-shaped base, the upper end of the base is provided with a cross-shaped rubber block, the upper end of the rubber block is provided with a U-shaped upper seat, the upper end of the upper seat is fixed with a fixing rod, the upper end of the fixing rod is fixed with a cross-shaped crushing knife, the upper end of the crushing knife is fixed with a fixing frame, the left and right ends of the fixing frame are fixed with steel wires, and the upper ends of the steel wires are fixed with heads.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. A chamber is provided inside the connector, and is connected to the cavity of the pneumatic motor through the upper air duct, the channel and the lower air duct. When high-pressure cooling gas enters through the air inlet, the pneumatic motor is driven to work. At the same time, part of the gas enters the chamber of the connector through the lower air duct, the channel and the upper air duct, so that the cooling seat is cooled, and then the hopper is cooled to prevent the pulverized coal temperature inside the hopper from being too high. At the same time, the gas enters the cavity of the pneumatic motor through the upper air duct, the channel and the lower air duct and is discharged through the air outlet.

[0015] 2. By setting a steel wire on the crushing knife, when the crushing knife rotates to crush the coal sample, the head will rotate accordingly to whip the coal sample, and at the same time make the coal sample on the upper part of the hopper fall down to ensure that the coal sample is fully crushed. At the same time, the head is fixed at the upper end of the steel wire to increase the force of whipping the coal sample and prevent the steel wire from spreading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal explosion of the connector of the present invention;

[0019] Figure 4 It is a cross-sectional schematic diagram of the present utility model.

[0020] Explanations in the figure: 1. Bracket; 2. Pneumatic motor; 3. Connector; 4. Hopper; 5. Cover; 6. Clamp; 7. Connecting assembly; 11. Connecting rod; 21. Air inlet; 22. Air outlet; 23. Lower connecting seat; 24. Sealing ring; 25. Base; 26. Rubber block; 27. Upper seat; 28. Fixing rod; 29. ​​Crushing knife; 31. Upper connecting seat; 32. Cooling seat; 71. Bolt; 72. Channel; 231. Lower air duct; 291. Fixing frame; 292. Steel wire; 293. Head; 311. Upper air duct. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] See also Figure 1 、 Figure 2 and Figure 4A coal sample crushing assembly and crusher, including a U-shaped bracket 1, a connecting rod 11 is rotatably connected to the bracket 1, and a connecting member 3 is connected to the connecting rod 11. The connecting rod 11 is rotatably connected to the bracket 1. When the device crushes the coal sample, the hopper 4 can be swung back and forth to shake the coal sample in the hopper 4 to ensure the crushing effect of the coal sample inside the hopper 4. The lower end of the connecting member 3 is detachably connected to the air motor 2, and the air motor 2 is provided with an air inlet 21 and a The air outlet 22 adopts the air motor 2 as the power source, so that the air motor 2 can still maintain room temperature after working for a long time, ensuring that the device can still crush the coal sample in the hopper 4 under long-term work. The outer wall of the air motor 2 is fixed with a lower connecting seat 23, the outer wall of the connecting member 3 is provided with an upper connecting seat 31, the upper end of the connecting member 3 is provided with a cooling seat 32, the upper end of the cooling seat 32 is fixed with the hopper 4, the upper end of the hopper 4 is provided with a cover 5, and the outer wall of the cover 5 is provided with a There is a clamp 6, the cover 5 is used to hold the coal sample, the hopper 4 is sealed by the cover 5 to prevent the coal sample from floating out after being crushed in the hopper 4, the hopper 4 and the cover 5 are fixed by the clamp 6 to ensure the firmness of their connection, a plurality of connecting components 7 are provided along the circumference between the upper connecting seat 31 and the lower connecting seat 23, the upper connecting seat 31 and the lower connecting seat 23 are connected by the connecting component 7, and the pneumatic motor 2 and the connecting piece 3 are connected by the connecting component 7, so that the pneumatic motor 2 and the connecting piece 3 are realized The detachable connection makes it easy to separate the pneumatic motor 2 and the connecting part 3 for maintenance. A plurality of lower air ducts 231 are provided along the circumference of the lower connecting seat 23, and a plurality of upper air ducts 311 are provided along the circumference of the upper connecting seat 31. The upper air duct 311 is connected to the lower air duct 231 through the connecting component 7. The lower air duct 231, the upper air duct 311 and the connecting component 7 are connected to form a circulation passage, which facilitates the entry of gas to cool the cooling seat 32, and then cool the coal powder in the hopper 4.

[0023] See also Figure 1 、 Figure 2 and Figure 4, a sealing ring 24 is provided between the lower connecting seat 23 and the upper connecting seat 31, a cavity is provided inside the pneumatic motor 2, the air inlet 21 and the air outlet 22 are tangentially connected to the cavity of the pneumatic motor 2, the lower air duct 231 is connected to the cavity of the pneumatic motor 2, a chamber is provided inside the connecting piece 3, and the upper air duct 311 is connected to the cavity of the connecting piece 3. By providing a chamber inside the connecting piece 3 and communicating with the cavity of the pneumatic motor 2 through the upper air duct 311, the channel 72 and the lower air duct 231, when the high-pressure cooling gas enters through the air inlet 21, the pneumatic motor 2 is driven to work, and at the same time, part of the gas enters the chamber of the connecting piece 3 through the lower air duct 231, the channel 72 and the upper air duct 311, so that the cooling seat 32 is cooled, and then the hopper 4 is cooled to prevent the pulverized coal temperature inside the hopper 4 from being too high. At the same time, the gas will enter the pneumatic motor 2 through the upper air duct 311, the channel 72 and the lower air duct 231. The air is discharged from the cavity of the motor 2 through the air outlet 22, and the lower air duct 231 passes through the lower connecting seat 23 up and down, and the upper air duct 311 passes through the upper connecting seat 31 up and down, and the connecting assembly 7 includes a bolt 71, and the bolt 71 connects the lower connecting seat 23 and the upper connecting seat 31 through the lower air duct 231 and the upper air duct 311 to ensure the sealing of the connection and prevent the gas from escaping.

[0024] See also Figure 1 、 Figure 2 and Figure 3 , a coal sample crushing assembly, the output end of the pneumatic motor 2 passes through the lower connecting seat 23 and is connected to a U-shaped base 25, the upper end of the base 25 is provided with a cross-shaped rubber block 26, the upper end of the rubber block 26 is provided with a U-shaped upper seat 27, the upper end of the upper seat 27 is fixed with a fixing rod 28, the upper end of the fixing rod 28 is fixed with a cross-shaped crushing knife 29, the upper end of the crushing knife 29 is fixed with a fixing frame 291, the left and right ends of the fixing frame 291 are fixed with steel wires 292, and the upper ends of the steel wires 292 are fixed with head seals 293. By arranging the steel wire 292 on the crushing knife 29, when the crushing knife 29 rotates to crush the coal sample, the head seal 293 rotates accordingly to whip the coal sample, and at the same time, the coal sample on the upper part of the hopper 4 falls, ensuring that the coal sample is fully crushed. At the same time, the head seal 293 is fixed at the upper end of the steel wire 292 to increase the force of whipping the coal sample and prevent the steel wire 292 from dispersing.

[0025] When using this utility model:

[0026] First, place the coal sample in the hopper 4, close the cover 5, put on the clamp 6, introduce high-pressure and low-temperature gas at the air inlet 21, and start the pneumatic motor 2 to work;

[0027] Then, the pneumatic motor 2 drives the crushing blade 29 and the steel wire 292 to rotate, and the crushing blade 29 crushes the coal sample. At the same time, the sealing head 293 rotates to whip the coal sample, and at the same time, the coal sample in the upper part of the hopper 4 falls and is crushed.

[0028] Next, part of the high-pressure, low-temperature gas introduced from the air inlet 21 enters the chamber of the connector 3 through the lower air passage 231, the channel 72, and the upper air passage 311, cooling the cooling seat 32 and, in turn, cooling the hopper 4, thereby preventing the pulverized coal inside the hopper 4 from being too hot. Simultaneously, after heat exchange, the gas enters the cavity of the pneumatic motor 2 through the upper air passage 311, the channel 72, and the lower air passage 231, and is discharged through the air outlet 22.

[0029] Finally, open the clamp 6 and the cover 5 in sequence and take out the coal powder in the hopper 4.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal sample crusher, characterized by: The invention comprises a U-shaped bracket (1), a connecting rod (11) is rotatably connected to the bracket (1), a connecting member (3) is connected to the connecting rod (11), the lower end of the connecting member (3) is detachably connected to an air motor (2), an air inlet (21) and an air outlet (22) are provided on the air motor (2), a lower connecting seat (23) is fixed to the outer wall of the air motor (2), an upper connecting seat (31) is provided on the outer wall of the connecting member (3), a cooling seat (32) is provided on the upper end of the cooling seat (32), and a hopper (4) is fixed to the upper end of the cooling seat (32). ), a cover (5) is provided at the upper end of the hopper (4), a clamp (6) is provided on the outer wall of the cover (5), a plurality of connecting components (7) are provided along the circumference between the upper connecting seat (31) and the lower connecting seat (23), the upper connecting seat (31) and the lower connecting seat (23) are connected via the connecting components (7), a plurality of lower air ducts (231) are provided along the circumference of the lower connecting seat (23), a plurality of upper air ducts (311) are provided along the circumference of the upper connecting seat (31), and the upper air ducts (311) are communicated with the lower air ducts (231) via the connecting components (7).

2. A coal sample pulverizer according to claim 1, characterized in that: A sealing ring (24) is provided between the lower connecting seat (23) and the upper connecting seat (31), a cavity is provided inside the pneumatic motor (2), the air inlet (21) and the air outlet (22) are in communication with the cavity of the pneumatic motor (2), and the lower air duct (231) is in communication with the cavity of the pneumatic motor (2).

3. A coal sample pulverizer according to claim 1, characterized in that: A chamber is provided inside the connecting piece (3), and the upper airway (311) is in communication with the chamber of the connecting piece (3).

4. A coal sample pulverizer according to claim 1, characterized in that: The lower air duct (231) passes through the lower connecting seat (23) vertically, and the upper air duct (311) passes through the upper connecting seat (31) vertically. The connecting assembly (7) includes a bolt (71). The bolt (71) connects the lower connecting seat (23) and the upper connecting seat (31) through the lower air duct (231) and the upper air duct (311). A U-shaped channel (72) is provided inside the bolt (71). The channel (72) is communicated with the upper air duct (311) and the lower air duct (231). The aperture of the contact portion between the lower air duct (231), the upper air duct (311) and the bolt (71) becomes larger.

5. The coal sample pulverizer according to claim 2, characterized in that: The air inlet (21) and the air outlet (22) are tangentially connected to the cavity of the pneumatic motor (2).

6. A coal sample crushing assembly, characterized by: A coal sample crusher according to claim 1 is used, wherein the output end of the pneumatic motor (2) passes through the lower connecting seat (23) and is connected to a U-shaped base (25), the upper end of the base (25) is provided with a cross-shaped rubber block (26), the upper end of the rubber block (26) is provided with a U-shaped upper seat (27), the upper end of the upper seat (27) is fixed with a fixing rod (28), the upper end of the fixing rod (28) is fixed with a cross-shaped crushing knife (29), the upper end of the crushing knife (29) is fixed with a fixing frame (291), the left and right ends of the fixing frame (291) are fixed with steel wires (292), and the upper ends of the steel wires (292) are fixed with heads (293).

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