Coal drop pipe dredging device

Abstract

The utility model relates to the technical field of dynamic power generation, in particular to a coal drop pipe dredging device, which comprises a coal feeding pipe and is characterized in that the coal feeding pipe is a horizontal round pipe, a coal feeding hopper is arranged on the coal feeding pipe, a vertical coal drop pipe is arranged on one side, far away from the coal feeding hopper, of the coal feeding pipe, dredging steel chisels are mounted in the coal drop pipe, and the dredging steel chisels are connected with the coal feeding pipe. The lifting assembly drives the dredging steel chisel to move up and down; the cleaning component is used for synchronously cleaning the inner wall of the coal drop pipe when the dredging steel chisel moves up and down; the conveying assembly is used for conveying the coal falling from the coal feeding hopper into the coal falling pipe; the driving motor drives the driving lead screw to rotate, the driving lead screw interacts with the threaded hole through the threaded rod, and under the connection of the long round key, the sliding groove and the key groove, the dredging steel chisel moves up and down to drive the chisel bit to smash and dredge blocked coal briquettes and dredge a blocked coal drop pipe, so that the coal briquettes are prevented from being blocked in the coal drop pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermal power generation technical field especially relates to a coal chute dredging device. BACKGROUND

[0002] Thermal power generation is a kind of power generation mode that fossil fuel (such as coal, natural gas or petroleum) is burned to generate electricity, and it is the main mode of power generation at present, and the coal burning system is one of the most common power generation modes in thermal power plants, in order to improve the combustion efficiency and quality of coal in thermal power generation, remove the impurities such as soil and stone contained in coal, and improve economic efficiency, coal needs to be washed.

[0003] The coal after washing contains more water, and is easy to stick to the inner wall of the coal feeding pipe during transportation in the coal feeding pipe, especially the large coal blocks are easy to block the coal feeding pipe when sticking to the inner wall of the coal feeding pipe, which affects the normal operation of thermal power generation, and the coal feeding pipe needs to be dredged after shutdown, and the current treatment mode of power plant is that manual steel drill is used to dredge the coal chute after the coal feeding pipe is removed from the burning boiler and cooled for a period of time, and the process is more and there is a safety hazard.

[0004] Therefore, we propose a coal chute dredging device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at solving the problem that the coal chute is easy to be blocked and inconvenient to dredge in the prior art, and provides a coal chute dredging device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A coal chute dredging device, including coal feeding pipe, its characterized in that, the coal feeding pipe is horizontal round pipe, the coal feeding pipe is provided with coal inlet hopper, the side of coal feeding pipe away from coal inlet hopper is provided with vertical coal chute, the coal chute is installed with dredging steel drill, and the device further includes: lifting assembly, drives dredging steel drill to move up and down;Cleaning component, synchronously clean the inner wall of coal chute when dredging steel drill moves up and down;Conveying assembly, coal material falling in coal inlet hopper is conveyed to coal chute.

[0008] The further scheme of the utility model is that the lower end of the dredging steel drill is a pointed drill bit.

[0009] The further scheme of the utility model is that the cleaning component is a plurality of dredging iron chains installed at the lower end of the dredging steel drill, and the plurality of dredging iron chains are distributed around the axis of the dredging steel drill.

[0010] A further solution of the present utility model is that the lifting assembly includes a dredging cover arranged on the coal feeding pipe, the dredging cover is provided with a first square rod, the dredging cover is installed with a second square tube, the upper end of the second square tube is installed with a driving component, the second square tube is provided with a first round tube, the dredging steel chisel is installed in the first round tube, the first round tube is provided with a sliding groove, the upper end of the dredging steel chisel is provided with a keyway, the keyway is installed with a long round key, and the long round key passes through the sliding groove and is adapted to the keyway.

[0011] A further solution of the present invention is that a connecting frame is provided at the upper end of the first square rod, an electric hoist is installed on the connecting frame, a lifting hook is provided on the electric hoist, and a lifting ring is provided on the driving motor, and the lifting ring is adapted to the lifting hook.

[0012] A further solution of the present invention is that the conveying assembly includes a feeding belt frame installed on the coal feeding pipe, the left side of the feeding belt frame is located on the left side below the coal feed hopper, and the right end of the feeding belt frame is located above the coal drop pipe and does not contact the second square pipe.

[0013] A further solution of the present invention is that the driving component is a driving motor.

[0014] A further solution of the present invention is that a threaded hole is provided on the dredging steel drill rod, and a driving screw is installed at the output end of the driving motor.

[0015] A further solution of the present invention is that the driving screw is a threaded rod and is engaged with the threaded hole, and the length of the driving screw is the same as the length of the second square tube.

[0016] A further solution of the present invention is that an inclined feeding plate is provided on the right side of the feeding belt frame, and the upper left side of the feeding plate is in contact with the belt conveying surface of the lower end of the feeding belt frame.

[0017] Compared with the prior art, the present invention provides a coal drop pipe dredging device having the following beneficial effects.

[0018] 1. The utility model drives the driving screw to rotate through the driving motor. The driving screw interacts with the threaded rod and the threaded hole. Under the connection of the long round key, the sliding groove and the keyway, the dredging steel drill moves up and down to drive the drill head to crush and dredge the blocked coal blocks, thereby dredging the blocked coal drop pipe and preventing the coal blocks from clogging the coal drop pipe.

[0019] 2. The utility model cleans the coal material adhering to the inner wall of the coal drop pipe by oscillating the dredging iron chain at the end up and down and rubbing against the inner wall of the coal drop pipe. The feeding plate scrapes off the coal material adhering to the feeding belt frame during the movement of the feeding belt frame, thereby ensuring that the surface of the feeding belt frame is clean after transportation.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0023] Figure 3 For the utility model Figure 1 A in the middle is an enlarged structural diagram;

[0024] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0025] Figure 5 This is a schematic diagram of the explosion structure of the driving screw of the utility model.

[0026] Reference numerals:

[0027] 1. Coal feeding pipe; 11. Coal feeding hopper; 12. Coal dropping pipe; 13. Dredging cover; 2. Dredging steel drill; 21. Drill bit; 22. Dredging chain; 23. Keyway; 24. Long round key; 25. Threaded hole; 3. First square rod; 31. Second square tube; 311. First round tube; 3111. Sliding groove; 4. Driving motor; 41. Driving screw; 42. Lifting ring; 5. Electric hoist; 51. Lifting hook; 52. Sliding sleeve; 6. Feeding belt rack; 61. Feeding plate. DETAILED DESCRIPTION

[0028] 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.

[0029] Reference Figures 1-5 The utility model relates to a coal drop pipe dredging device, comprising a coal feeding pipe 1, which is a horizontal circular pipe. A coal feed hopper 11 is provided on the coal feeding pipe 1. A vertical coal drop pipe 12 is provided on the side of the coal feeding pipe 1 away from the coal feed hopper 11. A dredging steel chisel 2 is installed in the coal drop pipe 12. The dredging steel chisel 2 is provided with a cleaning component for cleaning the inner wall of the coal drop pipe 12. A lifting component for driving the dredging steel chisel 2 to move up and down is provided on the coal feeding pipe 1. A conveying component for conveying coal blocks is provided in the coal feeding pipe 1.

[0030] When the coal blocks are transported, the coal blocks after water washing enter the coal feeding pipe 1 through the coal feeding hopper 11, the water in the coal blocks slowly evaporates in the process of transporting the coal blocks by the conveying assembly in the coal feeding pipe 1, and then the coal blocks enter the coal falling pipe 12. Since the water in the coal blocks is not completely evaporated, part of the coal blocks adhere to the coal falling pipe 12, blocking the coal falling pipe 12. At this time, the lifting assembly controls the up-down movement of the dredging steel drill 2 to dredge the blocked coal falling pipe 12, avoiding the blocking of the coal blocks in the coal falling pipe 12. In the process, the cleaning component generates oscillation in the up-down movement of the dredging steel drill 2, and rubs against the inner wall of the coal falling pipe 12, effectively cleaning the inner wall of the coal falling pipe 12, preventing the coal from adhering to the inner wall of the coal falling pipe 12 to cause blocking, thereby improving the efficiency of thermal power generation, avoiding the danger of manual dredging, and improving the safety of thermal power generation coal conveying.

[0031] The lower end of the dredging steel drill 2 is a pointed drill bit 21, which is easy to push open the part of the coal blocks blocking when the coal falling pipe 12 is blocked, and at the same time, the larger coal blocks are crushed, so that the coal blocks are further fully burned, improving the effect of thermal power generation; the cleaning component is a plurality of dredging iron chains 22 installed at the lower end of the dredging steel drill 2, which are distributed around the axis of the dredging steel drill 2. In this scheme, three dredging iron chains 22 are provided. The dredging steel drill 2 moves up and down under the action of the lifting assembly, driving the drill bit 21 to crush and dredge the blocked coal blocks, and at the same time, the dredging iron chains 22 at the ends oscillate up and down and rub against the inner wall of the coal falling pipe 12, cleaning the coal material adhering to the inner wall of the coal falling pipe 12.

[0032] The lifting assembly includes a dredging cover 13 arranged on the coal feeding pipe 1, a first square rod 3 arranged on the dredging cover 13, a second square tube 31 installed on the dredging cover 13, a driving component installed at the upper end of the second square tube 31, the driving component being a driving motor 4, a first circular tube 311 arranged in the second square tube 31, the dredging steel drill 2 being installed in the first circular tube 311, a sliding groove 3111 arranged on the first circular tube 311, a key groove 23 arranged at the upper end of the dredging steel drill 2, a long circular key 24 installed on the key groove 23, the long circular key 24 penetrating the sliding groove 3111 and being matched with the key groove 23, a threaded hole 25 formed on the rod of the dredging steel drill 2, a driving lead screw 41 installed at the output end of the driving motor 4, the driving lead screw 41 being a threaded rod and being engaged with the threaded hole 25, the length of the driving lead screw 41 being the same as the length of the second square tube 31. In the lifting process, the driving motor 4 drives the driving lead screw 41 to rotate, the driving lead screw 41 interacts with the threaded hole 25 through the threaded rod, the dredging steel drill 2 moves up and down under the connection of the long circular key 24 and the sliding groove 3111 and the key groove 23, and does not rotate, thereby dredging the coal falling pipe 12.

[0033] In actual conveying coal block, because the length of the driving screw rod 41 and the second square tube 31 is same, the coal block adhered to the lower end of the coal falling pipe 12 is not cleaned, so the movement range of the dredging steel drill 2 needs to be larger than the length of the coal falling pipe 12, so the second embodiment is provided in the scheme:

[0034] The upper end of the first square rod 3 is provided with a connecting frame, the connecting frame is provided with an electric hoist 5, the electric hoist 5 is provided with a lifting hook 51, the driving motor 4 is provided with a lifting ring 42, the driving motor 4 is provided with a sliding sleeve 52, the sleeve opening of the sliding sleeve 52 is matched with the first square rod 3, the lifting ring 42 is matched with the lifting hook 51, when the lower end of the coal falling pipe 12 is cleaned, the electric hoist 5 drives the lifting hook 51 to adjust the driving motor 4 to descend, the driving motor 4 drives the second square tube 31 to descend by a distance, so that the lower end of the dredging steel drill 2 completely penetrates out of the coal falling pipe 12 and drives the dredging iron chain 22 to penetrate out of the lower end outlet of the coal falling pipe 12, the dredging iron chain 22 is vibrated to clean the lower end outlet of the coal falling pipe 12, so that the coal block adhered to the lower end outlet of the coal falling pipe 12 is avoided, and the coal falling is not affected, the sliding sleeve 52 is used for preventing the second square tube 31 from being offset when the plurality of driving motors 4 slide up and down.

[0035] The conveying assembly comprises a feeding belt frame 6 mounted on the coal feeding pipe 1, the left side of the feeding belt frame 6 is located below the left side of the coal inlet hopper 11, so that the coal in the coal inlet hopper 11 falls on the belt conveyor on the feeding belt frame 6, the right end of the feeding belt frame 6 is located above the coal falling pipe 12 and does not contact the second square tube 31, and the right side of the feeding belt frame 6 is provided with an inclined feeding plate 61, the upper left side of the feeding plate 61 is attached to the belt conveying surface at the lower end of the feeding belt frame 6, so that the coal adhered to the feeding belt frame 6 is further scraped off, thereby ensuring the surface of the feeding belt frame 6 after conveying to be clean.

[0036] In the utility model, the driving motor 4 drives the driving screw rod 41 to rotate, the driving screw rod 41 interacts with the threaded rod and the threaded hole 25, under the connection of the long circular key 24 and the sliding groove 3111 and the key groove 23, the dredging steel drill 2 moves up and down to drive the drill bit 21 to crush and dredge the blocked coal block, and the blocked coal falling pipe 12 is dredged, so that the coal block is prevented from being blocked in the coal falling pipe 12, and the end dredging iron chain 22 vibrates up and down to rub against the inner wall of the coal falling pipe 12, so that the coal adhered to the inner wall of the coal falling pipe 12 is cleaned.

[0037] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A coal drop pipe dredging device, comprising a coal feed pipe (1), characterized in that: The coal feeding pipe (1) is a horizontal circular pipe. A coal feeding hopper (11) is provided on the coal feeding pipe (1). A vertical coal dropping pipe (12) is provided on a side of the coal feeding pipe (1) away from the coal feeding hopper (11). A dredging steel chisel (2) is installed in the coal dropping pipe (12). The device further comprises: The lifting assembly drives the dredging steel drill (2) to move up and down; A cleaning component for cleaning the inner wall of the coal drop pipe (12) synchronously when the dredging steel chisel (2) moves up and down; The conveying assembly conveys the coal material dropped from the coal hopper (11) to the coal drop pipe (12).

2. A coal drop pipe dredging device according to claim 1, characterized in that: The lower end of the dredging steel drill (2) is a pointed drill head (21).

3. The coal drop pipe dredging device according to claim 1, characterized in that: The cleaning components are a plurality of dredging iron chains (22) installed at the lower end of the dredging steel bar (2), and the plurality of dredging iron chains (22) are distributed in a ring around the axis of the dredging steel bar (2).

4. The coal drop pipe dredging device according to claim 3, characterized in that: The lifting assembly comprises a dredging cover (13) arranged on a coal feeding pipe (1), a first square rod (3) being arranged on the dredging cover (13), a second square tube (31) being installed on the dredging cover (13), a driving component being installed at the upper end of the second square tube (31), a first round tube (311) being arranged in the second square tube (31), the dredging steel drill (2) being installed in the first round tube (311), a sliding groove (3111) being arranged on the first round tube (311), a keyway (23) being arranged at the upper end of the dredging steel drill (2), a long round key (24) being installed on the keyway (23), and the long round key (24) passing through the sliding groove (3111) and being adapted to the keyway (23).

5. The coal drop pipe dredging device according to claim 4, characterized in that: A connecting frame is provided at the upper end of the first square rod (3), an electric hoist (5) is mounted on the connecting frame, a lifting hook (51) is provided on the electric hoist (5), and a lifting ring (42) is provided on the driving component, and the lifting ring (42) is adapted to the lifting hook (51).

6. The coal drop pipe dredging device according to claim 5, characterized in that: The conveying assembly comprises a feeding belt frame (6) mounted on the coal feeding pipe (1), wherein the left side of the feeding belt frame (6) is located below the left side of the coal feeding hopper (11), and the right end of the feeding belt frame (6) is located above the coal dropping pipe (12) and does not contact the second square pipe (31).

7. The coal drop pipe dredging device according to claim 4, characterized in that: The driving component is a driving motor (4).

8. The coal drop pipe dredging device according to claim 7, characterized in that: A threaded hole (25) is provided on the rod of the dredging steel drill (2), a driving screw (41) is installed on the output end of the driving motor (4), a sliding sleeve (52) is installed on the driving motor (4), and the sleeve opening of the sliding sleeve (52) is adapted to the first square rod (3).

9. The coal drop pipe dredging device according to claim 8, characterized in that: The driving screw (41) is a threaded rod and engages with the threaded hole (25). The length of the driving screw (41) is the same as the length of the second square tube (31).

10. The coal drop pipe dredging device according to claim 6, characterized in that: An inclined feeding plate (61) is provided on the right side of the feeding belt frame (6), and the upper left side of the feeding plate (61) is in contact with the belt conveying surface at the lower end of the feeding belt frame (6).

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