Self-dust-suppression anti-blocking coal dropping pipe

Abstract

The utility model discloses a self-dust-suppression anti-blocking coal dropping pipe which comprises a material guide groove, a coal dropping pipe, a material receiving hopper and a pneumatic anti-blocking mechanism, a belt conveyor is fixedly installed in the material guide groove, the discharging end of the belt conveyor penetrates out of the opening end of the material guide groove, the bottom end of the coal dropping pipe is communicated with the top of the material guide groove, and the pneumatic anti-blocking mechanism is arranged on the material receiving hopper. The top end of the coal dropping pipe is communicated with the bottom end of the receiving hopper through a gate valve; according to the utility model, high-pressure air is jetted into the receiving hopper and the coal dropping pipe through the high-pressure nozzle, so that coal briquettes in the dropping process can be disturbed, the flowability of the coal briquettes can be improved, the probability of bridging blockage of the coal briquettes can be effectively reduced, and the coal dropping pipe and the receiving hopper can be effectively heated through the heat tracing band; the coal falling pipe and the material receiving hopper are arranged to prevent ice crystals from being formed on the inner walls of the coal falling pipe and the material receiving hopper due to low temperature, so that the condition that the coal is frozen and blocked is effectively avoided, and the heat preservation layer is arranged to play a heat preservation role on the coal falling pipe and the material receiving hopper, so that heat loss is reduced, and an energy-saving role is played.

Description

Technical Field

[0001] The utility model relates to the technical field of coal transportation, in particular to a self-dust suppression and anti-blocking coal falling pipe. Background Art

[0002] The coal drop pipe is used in continuous coal transportation operations. During the coal transportation process, the coal drop pipe is in a vertical or inclined state. Traditional coal drop pipes are blocked by material accumulation. After searching, the patent with announcement number CN217402536U discloses an anti-blocking coal drop pipe structure, which can greatly reduce the possibility of coal drop pipe blockage without increasing operating costs. The coal drop pipe has a wide adaptability to the inclination angle and is particularly suitable for coal drop pipes with small inclination angles.

[0003] However, the above scheme still has certain shortcomings in actual use. For example, when the temperature is low, ice crystals will form between the coal blocks and the pipe wall and condense together to form frozen coal. It is difficult to suppress the formation of ice crystals by relying solely on air conveying, and there is still a great risk of blockage. In addition, when the coal blocks in the coal drop pipe fall into the conveyor belt, a large amount of dust will be generated due to collision and impact, which will cause great environmental pollution to the production site and needs to be improved. Utility Model Content

[0004] The utility model aims to provide a self-dust suppression and anti-blocking coal falling pipe to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A self-dust-suppressing and anti-blocking coal dropping pipe comprises a material guide trough, a coal dropping pipe, a material collecting hopper and a pneumatic anti-blocking mechanism, a belt conveyor is fixedly installed in the material guide trough, and the unloading end of the belt conveyor passes through the open end of the material guide trough, the bottom end of the coal dropping pipe is connected with the top of the material guide trough, and the top end of the coal dropping pipe is connected with the bottom end of the material collecting hopper through a gate valve, the pneumatic anti-blocking mechanism comprises a high-pressure air pipe and a plurality of high-pressure nozzles, the air inlet end of the high-pressure air pipe is connected to a high-pressure air source, a plurality of high-pressure nozzles are installed through the coal dropping pipe and the material collecting hopper, and the high-pressure nozzles are all connected to the high-pressure air pipe, the outer walls of the coal dropping pipe and the material collecting hopper are provided with an electric heating mechanism, the top of the material guide trough is connected with a dust suction mechanism, and a brushing mechanism is installed on the material guide trough at a position corresponding to the feeding end of the belt conveyor.

[0007] As a further solution of the utility model: the electric heating mechanism includes a heating belt, which is spirally wound around the outer walls of the coal dropping pipe and the receiving hopper, and the outer walls of the coal dropping pipe and the receiving hopper are both covered with a thermal insulation layer.

[0008] As a further solution of the utility model: the outer wall of the high-pressure air pipe is provided with a plurality of air outlets, and each of the air outlets is equipped with an electromagnetic valve, and the electromagnetic valve is connected to the corresponding high-pressure nozzle through a conduit.

[0009] As a further solution of the utility model: the dust suction mechanism includes a dust collecting hood fixedly installed on the top of the material guide trough, the dust collecting hood is connected to the material guide trough, the top of the dust collecting hood is connected to a dust suction pipe, the air outlet end of the dust suction pipe is connected to a cyclone dust collector, and the air outlet end of the cyclone dust collector is connected to an induced draft fan.

[0010] As a further solution of the utility model: the coal drop pipe is located between the unloading end of the belt conveyor and the dust collecting hood.

[0011] As a further solution of the utility model: a slag drop opening is provided at a position corresponding to the brushing mechanism at the bottom of the material guide trough, and a movable slag collecting box is provided below the slag drop opening, and a walking wheel is installed at the bottom of the slag collecting box.

[0012] As a further solution of the utility model: the brushing mechanism includes a roller shaft rotatably arranged in the material guide groove, and a brush is fixedly installed on the peripheral wall of the roller shaft, and the brush is in contact with the outer wall of the feeding end of the conveyor belt of the belt conveyor.

[0013] As a further solution of the utility model: a flap is provided at one end of the material guide trough close to the slag dropping port, the bottom end of the flap is hinged to the material guide trough by a hinge, the top end of the flap is detachably connected to the material guide trough by a buckle, a driving mechanism is fixedly installed on the outer wall of the flap, the flap is symmetrically fixedly connected to two supports toward the outer wall in the material guide trough, the two ends of the roller shaft are rotatably connected to the corresponding supports, and the roller shaft is transmission connected to the driving mechanism.

[0014] As a further solution of the utility model: the driving mechanism includes a transmission box fixedly mounted on the flap, a pad is fixedly mounted on the bottom of the transmission box, a motor is fixedly connected to the outer wall of the transmission box, and the output shaft of the motor is inserted into the transmission box and fixedly sleeved with a first pulley, one end of the roller shaft is fixedly connected to a second pulley, the second pulley and the first pulley are connected by a toothed belt transmission, and an open groove for passing the toothed belt is provided through the outer wall of the flap.

[0015] As a further solution of the utility model: a pressure seat is provided at one end of the support away from the flap, and a plurality of guide rods are penetrated through holes on the pressure seat, one end of the guide rod is fixedly connected to the support, and the other end of the guide rod is connected to a nut through an external thread, and the fitting surfaces of the pressure seat and the support are both provided with semicircular arc grooves, and the outer wall of the roller shaft is provided with bearings near both ends, and the bearings are located in the corresponding arc grooves.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] In the utility model, high-pressure air is sprayed into the collecting hopper and the coal dropping pipe through a high-pressure nozzle, which can disturb the coal blocks in the falling process and improve the fluidity of the coal blocks, so as to effectively reduce the probability of coal bridging and blockage. Through the use of the heating belt, the coal dropping pipe and the collecting hopper can be effectively heated to avoid the formation of ice crystals on the inner walls of the two due to low temperature, thereby effectively avoiding the situation of frozen coal. Through the provision of the insulation layer, the coal dropping pipe and the collecting hopper can be insulated, thereby reducing heat loss and playing a role in energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a self-dust suppression and anti-blocking coal falling pipe.

[0019] Figure 2 for Figure 1 A partial enlarged view of .

[0020] Figure 3 The schematic diagram of the structure of a self-dust-suppressing and anti-blocking coal falling pipe middle pressure seat is shown in FIG.

[0021] Figure 4 The diagram is a distribution structure diagram of the heating belt in a self-dust suppression and anti-blocking coal falling pipe.

[0022] Among them, the material guide trough 1, the belt conveyor 2, the coal drop pipe 3, the gate valve 4, the collecting hopper 5, the high-pressure gas pipe 6, the solenoid valve 7, the conduit 8, the high-pressure nozzle 9, the heating belt 10, the insulation layer 11, the dust collecting hood 12, the dust suction pipe 13, the slag drop port 14, the slag collecting box 15, the brushing mechanism 16, the flap 17, the opening groove 18, the transmission box 19, the motor 20, the first pulley 21, the support 22, the roller 23, the brush 24, the bearing 25, the pressure seat 26, the arc groove 27, the guide rod 28, the perforation 29, the nut 30, the second pulley 31, and the cushion block 32. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 4In the embodiment of the utility model, a self-dust-suppressing and anti-blocking coal dropping pipe comprises a material guide trough 1, a coal dropping pipe 3, a material collecting hopper 5 and a pneumatic anti-blocking mechanism. A belt conveyor 2 is fixedly installed in the material guide trough 1, and the unloading end of the belt conveyor 2 passes through the open end of the material guide trough 1, the bottom end of the coal dropping pipe 3 is connected to the top of the material guide trough 1, and the top of the coal dropping pipe 3 is connected to the bottom end of the material collecting hopper 5 through a gate valve 4, the pneumatic anti-blocking mechanism comprises a high-pressure air pipe 6 and a plurality of high-pressure nozzles 9, the air inlet end of the high-pressure air pipe 6 is connected to a high-pressure air source, a plurality of high-pressure nozzles 9 are installed on the coal dropping pipe 3 and the material collecting hopper 5, and the high-pressure nozzles 9 are all connected to the high-pressure air pipe 6, the outer walls of the coal dropping pipe 3 and the material collecting hopper 5 are provided with an electric heating mechanism, the top of the material guide trough 1 is connected with a dust suction mechanism, and a brush sweeping mechanism 16 is installed on the material guide trough 1 at a corresponding position to the feeding end of the belt conveyor 2.

[0025] The utility model adopts the above-mentioned scheme. When in use, high-pressure air is sprayed into the collecting hopper 5 and the coal dropping pipe 3 through the high-pressure nozzle 9, which can disturb the coal blocks in the falling process and improve the fluidity of the coal blocks, so as to effectively reduce the probability of coal blocks bridging and blocking. Through the setting of the electric heating mechanism, when the external ambient temperature is low, starting the electric heating mechanism can heat the collecting hopper 5 and the coal dropping pipe 3 to avoid the formation of ice crystals on the inner walls of both due to the low temperature, thereby effectively avoiding the situation of frozen coal. Through the setting of the dust suction mechanism, the dust generated by the falling and collision of coal blocks in the guide trough 1 can be adsorbed and collected, so as to avoid pollution to the production environment. Through the setting of the brushing mechanism 16, the conveyor belt of the belt conveyor 2 can be cleaned to avoid the combination of impurities such as coal ash on the conveyor belt, so as to ensure the stability of the conveyor belt.

[0026] Specific combination Figure 4 In one embodiment of the utility model, the electric heating mechanism includes a heating belt 10, which is spirally wound around the outer walls of the coal dropping pipe 3 and the receiving hopper 5, and the outer walls of the coal dropping pipe 3 and the receiving hopper 5 are both covered with an insulation layer 11.

[0027] By using the heating belt 10, the coal drop pipe 3 and the receiving hopper 5 can be effectively heated to avoid the formation of ice crystals on the inner walls of the two due to low temperature. By setting the insulation layer 11, the coal drop pipe 3 and the receiving hopper 5 can be kept warm, thereby reducing heat loss and achieving energy-saving effect.

[0028] Specific combination Figure 1 In one embodiment of the utility model, the outer wall of the high-pressure air pipe 6 is provided with a plurality of air outlets, and each of the air outlets is provided with an electromagnetic valve 7 , and the electromagnetic valve 7 is connected to the corresponding high-pressure nozzle 9 through a conduit 8 .

[0029] By setting the solenoid valve 7 , it is convenient to control the working state of each high-pressure nozzle 9 .

[0030] Specific combination Figure 1 In one embodiment of the utility model, the dust collection mechanism includes a dust collecting hood 12 fixedly mounted on the top of the material guide trough 1, the dust collecting hood 12 is connected to the material guide trough 1, the top of the dust collecting hood 12 is connected to a dust collection pipe 13, the air outlet end of the dust collection pipe 13 is connected to a cyclone dust collector, and the air outlet end of the cyclone dust collector is connected to an induced draft fan.

[0031] By turning on the induced draft fan, the dust in the guide chute 1 can be adsorbed into the cyclone dust collector by the dust collecting hood 12 and the dust suction pipe 13 to collect the fly ash, thereby reducing the pollution to the production environment. In addition, the cyclone dust collector can also be replaced by a bag dust collector or other dust removal equipment.

[0032] Specific combination Figure 1 On the basis of the previous embodiment, further, the coal drop pipe 3 is located between the unloading end of the belt conveyor 2 and the dust collecting hood 12 .

[0033] Specific combination Figure 2 In one embodiment of the utility model, a slag outlet 14 is provided at a position corresponding to the brushing mechanism 16 at the bottom of the material guide trough 1, and a movable slag collecting box 15 is provided below the slag outlet 14, and a walking wheel is installed at the bottom of the slag collecting box 15.

[0034] By providing the slag drop opening 14 , the debris swept off the conveyor belt by the brushing mechanism 16 can fall into the slag collecting box 15 through the slag drop opening, so that the debris can be cleaned up conveniently.

[0035] Specific combination Figure 2 In one embodiment of the utility model, the brushing mechanism 16 includes a roller 23 rotatably disposed in the material guide trough 1, and a brush 24 is fixedly mounted on the peripheral wall of the roller 23, and the brush 24 is in contact with the outer wall of the feeding end of the conveyor belt of the belt conveyor 2.

[0036] In addition, a flap 17 is provided at one end of the material guide trough 1 close to the slag outlet 14, the bottom end of the flap 17 is hinged to the material guide trough 1 by a hinge, the top end of the flap 17 is detachably connected to the material guide trough 1 by a buckle, a driving mechanism is fixedly installed on the outer wall of the flap 17, and the flap 17 is symmetrically fixedly connected to two supports 22 toward the outer wall inside the material guide trough 1, the two ends of the roller shaft 23 are rotatably connected to the corresponding supports 22, and the roller shaft 23 is transmission connected to the driving mechanism.

[0037] Furthermore, the driving mechanism includes a transmission box 19 fixedly mounted on the flap 17, a cushion block 32 is fixedly mounted on the bottom of the transmission box 19, a motor 20 is fixedly connected to the outer wall of the transmission box 19, and the output shaft of the motor 20 is inserted into the transmission box 19 and fixedly sleeved with a first pulley 21, one end of the roller shaft 23 is fixedly connected to a second pulley 31, the second pulley 31 and the first pulley 21 are connected by a toothed belt transmission, and an open groove 18 for inserting a toothed belt is provided through the outer wall of the flap 17.

[0038] By starting the motor 20 to drive the first pulley 21 to rotate, the toothed belt can be used to drive the second pulley 31 to rotate, thereby driving the brush 24 to rotate to brush the conveyor belt. After the equipment has been used for a period of time, the flap 17 can be turned over to the outside of the material guide trough 1 by opening the buckle, so that the brush 24 can be rotated to the outside of the material guide trough 1 to facilitate its cleaning or replacement.

[0039] Specific combination Figure 3 On the basis of the previous embodiment, further, a pressure seat 26 is provided at one end of the support 22 away from the flap 17, and a plurality of guide rods 28 are penetrated through the pressure seat 26 through the through holes 29. One end of the guide rod 28 is fixedly connected to the support 22, and the other end of the guide rod 28 is connected to a nut 30 through an external thread. The fitting surfaces of the pressure seat 26 and the support 22 are both provided with semicircular arc grooves 27, and the outer wall of the roller shaft 23 is provided with bearings 25 near both ends, and the bearings 25 are located in the corresponding arc grooves 27.

[0040] By the cooperation between the nut 20 and the external thread, the pressure seat 26 is disassembled on the support 22, so that the roller shaft 23 is conveniently disassembled on the two supports 22 to facilitate the replacement of the brush 24, and the operation is simple and convenient.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-dust suppression and anti-blocking coal falling pipe, characterized by: The invention comprises a material guide trough (1), a coal drop pipe (3), a material receiving hopper (5) and a pneumatic anti-blocking mechanism. A belt conveyor (2) is fixedly installed in the material guide trough (1), and the material discharge end of the belt conveyor (2) passes through the open end of the material guide trough (1). The bottom end of the coal drop pipe (3) is connected to the top of the material guide trough (1), and the top end of the coal drop pipe (3) is connected to the bottom end of the material receiving hopper (5) through a gate valve (4). The pneumatic anti-blocking mechanism comprises a high-pressure air pipe (6) and a plurality of high-pressure nozzles. (9), the air inlet end of the high-pressure air pipe (6) is connected to the high-pressure air source, a plurality of the high-pressure nozzles (9) are installed through the coal dropping pipe (3) and the receiving hopper (5), and the high-pressure nozzles (9) are all connected to the high-pressure air pipe (6), the outer walls of the coal dropping pipe (3) and the receiving hopper (5) are provided with an electric heating mechanism, the top of the material guide trough (1) is connected with a dust suction mechanism, and a brushing mechanism (16) is installed on the material guide trough (1) at a position corresponding to the feeding end of the belt conveyor (2).

2. The self-dust suppression and anti-blocking coal falling pipe according to claim 1 is characterized by: The electric heating mechanism comprises a heating belt (10), wherein the heating belt (10) is spirally wound around the outer walls of the coal dropping pipe (3) and the receiving hopper (5), and the outer walls of the coal dropping pipe (3) and the receiving hopper (5) are both covered with a heat-insulating layer (11).

3. The self-dust suppression and anti-blocking coal falling pipe according to claim 1 is characterized by: The outer wall of the high-pressure air pipe (6) is provided with a plurality of air outlets, and each of the air outlets is provided with an electromagnetic valve (7), and the electromagnetic valve (7) is connected to a corresponding high-pressure nozzle (9) through a conduit (8).

4. The self-dust suppression and anti-blocking coal falling pipe according to claim 1 is characterized by: The dust collection mechanism comprises a dust collecting hood (12) fixedly mounted on the top of the material guide trough (1), the dust collecting hood (12) being in communication with the material guide trough (1), the top of the dust collecting hood (12) being connected to a dust collection pipe (13), the air outlet end of the dust collection pipe (13) being connected to a cyclone dust collector, and the air outlet end of the cyclone dust collector being connected to an induced draft fan.

5. The self-dust suppression and anti-blocking coal falling pipe according to claim 1 is characterized by: A slag drop opening (14) is provided at a position corresponding to the brushing mechanism (16) at the bottom of the material guide trough (1), and a movable slag collection box (15) is provided below the slag drop opening (14), and a walking wheel is installed at the bottom of the slag collection box (15).

6. The self-dust suppression and anti-blocking coal falling pipe according to claim 1 is characterized by: The brushing mechanism (16) comprises a roller shaft (23) rotatably arranged in the material guide trough (1), a brush (24) being fixedly mounted on the peripheral wall of the roller shaft (23), and the brush (24) being in contact with the outer wall of the feeding end of the conveyor belt of the belt conveyor (2).

7. The self-dust suppression and anti-blocking coal falling pipe according to claim 6 is characterized by: A flap (17) is provided at one end of the material guide trough (1) near the slag outlet (14); the bottom end of the flap (17) is hinged to the material guide trough (1) by a hinge; the top end of the flap (17) is detachably connected to the material guide trough (1) by a buckle; a driving mechanism is fixedly mounted on the outer wall of the flap (17); two supports (22) are symmetrically fixedly mounted on the outer wall of the material guide trough (1) by the flap (17); the two ends of the roller shaft (23) are detachably mounted on the corresponding supports (22); and the roller shaft (23) is transmission-connected to the driving mechanism.

8. The self-dust suppression and anti-blocking coal falling pipe according to claim 7 is characterized by: The driving mechanism comprises a transmission box (19) fixedly mounted on the flap (17), a cushion block (32) fixedly mounted on the bottom of the transmission box (19), an outer wall of the transmission box (19) fixedly connected with a motor (20), and an output shaft of the motor (20) is inserted into the transmission box (19) and fixedly sleeved with a first pulley (21), one end of the roller shaft (23) is fixedly connected with a second pulley (31), the second pulley (31) and the first pulley (21) are connected through a toothed belt transmission, and an opening groove (18) for passing the toothed belt is provided through the outer wall of the flap (17).

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