Material suction mechanism used in frozen coal and residual coal intelligent cleaning device of car dumper

Abstract

The utility model discloses a material suction mechanism used in an intelligent frozen coal and residual coal cleaning device of a car dumper, which comprises an external conical box, and a feeding pipe is inserted on the side wall surface of the external conical box; the utility model relates to the technical field of material suction mechanisms, ensures the effective separation of residual coal and prevents the waste of the residual coal through the conical secondary filter hopper, the filter screen plate, the tertiary filter screen and other structures, and flexibly adjusts the gas-solid separation path through the opening and closing of the electromagnetic valve according to the dry and wet degree of the residual coal, thereby improving the separation efficiency. The device can meet the cleaning requirements of residual coal with different properties, a conical receiving hopper is knocked through reciprocating stretching and retracting of a second air cylinder, blockage of the residual coal is effectively prevented, smooth discharging is guaranteed, a filter screen plate, a conical second-stage filter hopper and a third-stage filter screen can be conveniently cleaned after the residual coal is collected through the design of a back flushing assembly, and the cleaning efficiency is improved. The service life of the equipment is prolonged, the maintenance cost is reduced, workers do not need to enter a compartment for cleaning, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of suction mechanisms, in particular to a suction mechanism used in an intelligent cleaning device for frozen coal and residual coal of a dumper. Background Art

[0002] Coal transportation by train is the primary mode of transport for thermal power plants. For most thermal power plants north of the Qinling Mountains and the Huaihe River, the railway lines are located in northern China, where winter outdoor temperatures can reach between -10°C and 30°C. During long-distance transportation, coal inevitably freezes, forming lumps of frozen coal that become attached to the train cars. Even after unloading, a significant amount of frozen coal remains frozen inside the cars, requiring manual cleaning using simple tools like pickaxes and impact drills. Cleaners then open the car doors, enter, and use shovels and brooms to sweep the remaining coal from the cars. The remaining coal is then swept out the side doors, where it scatters along the tracks or into the coal unloading ditch. After disembarking, the cleaners reseal the side doors and collect the coal that has been swept away and transported away. This process is inefficient, costly, labor-intensive, and poses a poor working environment, as well as safety risks. Therefore, a suction mechanism has been designed to collect the remaining coal from the cars.

[0003] There may already be technical means to solve the above problems in the existing technology, but this case intends to provide an alternative or replacement technical solution. Utility Model Content

[0004] To solve the problems raised in the background technology, the present invention is implemented through the following technical solutions: a suction mechanism for an intelligent cleaning device for frozen coal and residual coal in a dumper, comprising an external conical box, a feed pipe inserted into the side wall of the external conical box, a screw conveyor installed at the lower end of the external conical box, and a filtering structure installed on the external conical box;

[0005] The filtering structure includes a conical secondary filter bucket, which is mounted on the inner wall of the external conical box and located above the feed pipe. The lower end of the conical secondary filter bucket is hingedly connected to a filter screen plate. A first cylinder is hingedly connected to the outer wall of the conical secondary filter bucket. The telescopic end of the first cylinder is hingedly connected to the wall surface of the filter screen plate. A three-stage filter screen is mounted on the inner top surface of the external conical box. A separation cover is mounted on the inner top surface of the external conical box. The separation cover is coaxially mounted with the three-stage filter screen, and the three-stage filter screen is located inside the separation cover. A solenoid valve is mounted on the lower wall of the separation cover. A dry exhaust pipe is inserted on the upper wall of the external conical box and located at the center of the three-stage filter screen. A wet exhaust pipe is inserted on the upper wall of the external conical box and located outside the separation cover. A negative pressure power assembly is installed at one end of the dry exhaust pipe and the wet exhaust pipe. A material shaking assembly is mounted on the inner wall of the external conical box and located below the feed pipe. A backflush assembly is mounted on the external conical box.

[0006] Preferably, the material shaking assembly includes a conical material receiving hopper, which is installed on the inner wall of the external conical box and is located below the feed pipe. A second cylinder is installed on the inner wall of the external conical box, and the telescopic end of the second cylinder is aligned with the outer wall of the conical material receiving hopper.

[0007] Preferably, the negative pressure power assembly includes a connecting air duct, which is installed at one end of the exhaust pipe and the wet exhaust pipe. A negative pressure air pump is installed at one end of the connecting air duct, and an outlet pipe is installed on the negative pressure air pump.

[0008] Preferably, a muffler is installed at one end of the air outlet pipe.

[0009] Preferably, a hammer head is installed at the telescopic end of the second cylinder.

[0010] Preferably, the inner diameter of the lower end of the conical receiving hopper is smaller than the inner diameter of the lower end of the external conical box.

[0011] Preferably, the back-blowing assembly includes a back-blowing pipe, which is inserted into the upper wall of the external conical box and is located between the dry exhaust pipe and the three-stage filter. A check valve is installed at one end of the back-blowing pipe, and a back-blowing blower is installed at one end of the check valve.

[0012] Beneficial effects

[0013] The utility model provides a suction mechanism for an intelligent cleaning device for frozen coal and residual coal of a dumper. Compared with the prior art, it has the following beneficial effects: through structures such as a conical secondary filter hopper, a filter screen plate, and a tertiary filter screen, the effective separation of residual coal is ensured to prevent waste of residual coal. According to the dryness and wetness of the residual coal, the path of gas-solid separation is flexibly adjusted by opening and closing the solenoid valve, so that the device can adapt to the cleaning needs of residual coal of different properties. The reciprocating extension and contraction of the second cylinder is used to knock the conical receiving hopper, which effectively prevents the blockage of residual coal and ensures smooth material discharge. The design of the backflush component enables the filter screen plate, the conical secondary filter hopper and the tertiary filter screen to be easily cleaned after the residual coal is collected, thereby extending the service life of the equipment, reducing maintenance costs, and eliminating the need for manual entry into the carriage for cleaning, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of a suction mechanism used in an intelligent cleaning device for frozen coal and residual coal of a dumper according to the utility model.

[0015] Figure 2 The utility model is a partial upward sectional structural schematic diagram of a suction mechanism used in an intelligent cleaning device for frozen coal and residual coal of a dumper.

[0016] Figure 3 This is a suction mechanism used in the intelligent cleaning device for frozen coal and residual coal of a dumper. Figure 1 Schematic diagram of the partially enlarged structure.

[0017] In the figure: 1. External conical box, 2. Feed pipe, 3. Screw conveyor, 4. Conical secondary filter hopper, 5. Filter plate, 6. First cylinder, 7. Third-stage filter, 8. Separation cover, 9. Solenoid valve, 10. Dry exhaust pipe, 11. Wet exhaust pipe, 12. Conical receiving hopper, 13. Second cylinder, 14. Connecting air duct, 15. Negative pressure air pump, 16. Muffler, 17. Hammer, 18. Backflush pipe, 19. Check valve, 20. Backflush blower. DETAILED DESCRIPTION

[0018] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0019] Example: Through the personnel in this field, all electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between each electrical component is completed in the order of working. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0020] See also Figure 1-3 In order to solve the problem that when manually collecting the remaining coal, cleaning personnel need to enter the carriage and sweep the remaining coal out from the side door of the carriage, which is scattered beside the train track or falls into the coal unloading ditch. The cleaning personnel then collect the coal scattered beside the train track and transport it away. This has the problems of unclear cleaning, low efficiency, high cost, high labor intensity, poor working environment and safety hazards. This technical solution is designed. The detailed technical solution is as follows;

[0021] A material suction mechanism used in an intelligent cleaning device for frozen coal and residual coal of a dumper, comprising an external conical box 1, a feed pipe 2 inserted into the side wall of the external conical box 1, a screw conveyor 3 installed at the lower end of the external conical box 1, and a filtering structure installed on the external conical box 1;

[0022] It should be noted that this technical solution can be used in the intelligent cleaning device for frozen coal and residual coal of the dumper to realize the automatic collection of residual coal. The structural design of the feed pipe 2 and the external conical box 1, as well as the design of the feed angle between the feed pipe 2 and the external conical box 1, refer to the principle of gas-solid separation in the cyclone separator. Since it is a prior art, it will not be described in detail.

[0023] Specifically, the filtering structure includes a conical secondary filter bucket 4, which is installed on the inner wall of the external conical box 1 and is located above the feed pipe 2. The lower end of the conical secondary filter bucket 4 is hinged with a filter screen plate 5, and the outer wall of the conical secondary filter bucket 4 is hinged with a first cylinder 6. The telescopic end of the first cylinder 6 is hinged on the upper wall of the filter screen plate 5. A third-stage filter screen 7 is installed on the inner top surface of the external conical box 1. A separation cover 8 is installed on the inner top surface of the external conical box 1. The separation cover 8 and the third-stage filter screen 7 are the same. The shaft is installed, and the three-stage filter screen 7 is located inside the separation cover 8. The lower wall of the separation cover 8 is installed with a solenoid valve 9. A dry exhaust pipe 10 is inserted on the upper wall of the external conical box 1 and located in the center of the three-stage filter screen 7. A wet exhaust pipe 11 is inserted on the upper wall of the external conical box 1 and located outside the separation cover 8. A negative pressure power component is installed at one end of the dry exhaust pipe 10 and the wet exhaust pipe 11. A material shaking component is installed on the inner wall of the external conical box 1 and located below the feed pipe 2. A backflush component is installed on the external conical box 1;

[0024] It should be noted that the feed pipe 2 is aligned with the carriage wall. After the frozen coal and residual coal intelligent cleaning device of the dumper scrapes the residual coal from the carriage wall, the negative pressure power component works. Under the connection of the dry exhaust pipe 10 and the wet exhaust pipe 11, a negative pressure is formed in the external conical box 1. The air and the residual coal in the carriage enter the external conical box 1 from the feed pipe 2 to perform a first-level gas-solid separation. The heavier residual coal falls onto the shaking assembly and then enters the screw conveyor 3 from the lower end of the external conical box 1. The lighter residual coal rises with the air and passes through the conical box. The secondary filter hopper 4 and the filter screen 5 realize the secondary gas-solid separation. If the residual coal is dry coal, the solenoid valve 9 is opened, and the fine residual coal and air enter the interior of the separation cover 8, and are filtered by the tertiary filter screen 7 to realize the tertiary gas-solid separation. The air is then discharged from the dry exhaust pipe 10. If the residual coal is wet coal, due to the heavy weight of wet coal, it can be completely separated after the primary and secondary gas-solid separation. Therefore, the solenoid valve 9 can be closed, and the air filtered by the conical secondary filter hopper 4 and the filter screen 5 is directly discharged from the wet exhaust pipe 11.

[0025] Specifically, the material shaking assembly includes a conical hopper 12, which is installed on the inner wall of the external conical box 1 and is located below the feed pipe 2. A second cylinder 13 is installed on the inner wall of the external conical box 1, and the telescopic end of the second cylinder 13 is aligned with the outer wall of the conical hopper 12;

[0026] It should be noted that the remaining coal falls into the conical receiving hopper 12, and the second cylinder 13 reciprocates and stretches, knocking on the conical receiving hopper 12, causing the conical receiving hopper 12 to vibrate, assisting in unloading and preventing blockage;

[0027] Specifically, the negative pressure power assembly includes a connecting air duct 14, which is installed at one end of the exhaust pipe and the wet exhaust pipe 11, and a negative pressure air pump 15 is installed at one end of the connecting air duct 14, and an outlet pipe is installed on the negative pressure air pump 15;

[0028] It should be noted that the negative pressure air pump 15 works to generate negative pressure in the connecting air duct 14. Under the connection between the dry exhaust pipe 10 and the wet exhaust pipe 11, a negative pressure is thus formed in the external conical box 1.

[0029] Specifically, the backflush assembly includes a backflush pipe 18, which is inserted into the upper wall of the external conical box 1 and is located between the dry exhaust pipe 10 and the three-stage filter 7. A check valve 19 is installed at one end of the backflush pipe 18, and a backflush blower 20 is installed at one end of the check valve 19.

[0030] It should be noted that, when the residual coal is collected, the first cylinder 6 extends, causing the filter screen 5 to flip over, and the residual coal in the conical secondary filter hopper 4 falls off. At the same time, the back-blowing air 20 works, and the air passes through the check valve 19 into the back-blowing pipe 18, and then blows toward the tertiary filter 7, the conical secondary filter hopper 4 and the filter screen 5 to achieve cleaning.

[0031] As a preference, further, a muffler 16 is installed at one end of the outlet pipe to reduce exhaust noise;

[0032] As a preference, further, a hammer head 17 is installed at the telescopic end of the second cylinder 13 to increase the contact area between the telescopic end of the second cylinder 13 and the conical receiving hopper 12;

[0033] As a preference, further, the inner diameter of the lower end of the conical receiving hopper 12 is smaller than the inner diameter of the lower end of the external conical box 1 .

[0034] 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 material suction mechanism for a car dumper's frozen coal and residual coal intelligent cleaning device, comprising an external conical box (1), a feed pipe (2) inserted on the side wall of the external conical box (1), and a screw conveyor (3) installed at the lower end of the external conical box (1), characterized in that: A filtering structure is installed on the outer conical box (1); The filtering structure comprises a conical secondary filter hopper (4), the conical secondary filter hopper (4) being mounted on the inner wall of an external conical box (1) and being located above a feed pipe (2), the lower end of the conical secondary filter hopper (4) being hingedly connected to a filter screen plate (5), the outer wall of the conical secondary filter hopper (4) being hingedly connected to a first cylinder (6), the telescopic end of the first cylinder (6) being hingedly connected to the upper wall of the filter screen plate (5), the inner top surface of the external conical box (1) being mounted with a third-stage filter screen (7), the inner top surface of the external conical box (1) being mounted with a separation cover (8), the separation cover (8) and the third-stage filter screen (7) being hingedly connected. The invention relates to a novel filter housing, wherein the filter housing (7) is installed on the upper wall of the external conical box (1) and is located inside the separation cover (8); a solenoid valve (9) is installed on the lower wall of the separation cover (8); a dry exhaust pipe (10) is inserted on the upper wall of the external conical box (1) and is located at the center of the three-stage filter (7); a wet exhaust pipe (11) is inserted on the upper wall of the external conical box (1) and is located outside the separation cover (8); a negative pressure power component is installed at one end of the dry exhaust pipe (10) and the wet exhaust pipe (11); a material shaking component is installed on the inner wall of the external conical box (1) and is located below the feed pipe (2); and a backflush component is installed on the external conical box (1).

2. The suction mechanism used in the intelligent cleaning device for frozen coal and residual coal of a dumper according to claim 1 is characterized in that: The material shaking assembly includes a conical material receiving hopper (12), which is installed on the inner wall of the external conical box (1) and is located below the feed pipe (2). A second cylinder (13) is installed on the inner wall of the external conical box (1), and the telescopic end of the second cylinder (13) is aligned with the outer wall of the conical material receiving hopper (12).

3. The suction mechanism used in the intelligent cleaning device for frozen coal and residual coal of a dumper according to claim 1 is characterized in that: The negative pressure power assembly comprises a connecting air duct (14), the connecting air duct (14) being installed at one end of the exhaust pipe and the wet exhaust pipe (11), a negative pressure air pump (15) being installed at one end of the connecting air duct (14), and an air outlet pipe being installed on the negative pressure air pump (15).

4. The suction mechanism used in the intelligent cleaning device for frozen coal and residual coal of a dumper according to claim 3 is characterized in that: A muffler (16) is installed at one end of the air outlet pipe.

5. The suction mechanism used in the intelligent cleaning device for frozen coal and residual coal of a car dumper according to claim 2 is characterized in that: A hammer head (17) is installed at the telescopic end of the second cylinder (13).

6. The suction mechanism used in the intelligent cleaning device for frozen coal and residual coal of a dumper according to claim 2 is characterized in that: The inner diameter of the lower end of the conical receiving hopper (12) is smaller than the inner diameter of the lower end of the external conical box (1).

7. The suction mechanism used in the intelligent cleaning device for frozen coal and residual coal of a car dumper according to claim 1 is characterized in that: The backflush assembly includes a backflush pipe (18), which is inserted into the upper wall of the external conical box (1) and located between the dry exhaust pipe (10) and the three-stage filter (7). A check valve (19) is installed at one end of the backflush pipe (18), and a backflush blower (20) is installed at one end of the check valve (19).

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