Dredging device for blanking port of coal mill

Abstract

The utility model belongs to the technical field of coal mills, and particularly relates to a dredging device for a blanking port of a coal mill, the bottom of the blanking port is fixedly communicated with an inclined feed box, the dredging device comprises a first threaded rod in threaded connection with the bottom of the feed box, the top of the first threaded rod is connected with a connecting rod, and the top of the connecting rod is connected with a slag removal head. The lower end of the first threaded rod penetrates through the material box and is fixedly connected with a hand wheel. The dredging device for the blanking port of the coal mill has the effects that materials can be smoothly discharged from the blanking port, and safe operation of equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mill technical field, concretely is a kind of dredging device for coal mill drop opening. BACKGROUND

[0002] With the continuous development of thermal power plant, coal mill is increasingly applied in power plant, and as important auxiliary equipment of power plant, the application of coal mill in the early treatment of coal raw material is very important.

[0003] The drop opening of the coal mill is provided with a material box communicated with the drop opening, and a movable plug is arranged at the drop opening.

[0004] However, in actual use, the coal residue may block the drop opening, which may affect the safe operation of the equipment if not cleaned in time. UTILITY MODEL

[0005] To solve the problems in the above background, the utility model provides a dredging device for the drop opening of the coal mill.

[0006] The bottom of the drop opening is fixedly connected with a material box, and the dredging device comprises a first threaded rod threadedly connected with the bottom of the material box.

[0007] When the coal residue blocking the drop opening needs to be dredged, the worker rotates the hand wheel, the hand wheel drives the first threaded rod, the connecting rod and the residue cleaning head to move upward to the inside of the drop opening, reversely rotates the hand wheel, the hand wheel drives the first threaded rod, the connecting rod and the residue cleaning head to move downward, rotates the hand wheel to make the residue cleaning head reciprocate, the residue cleaning head dredges the coal residue blocking the drop opening, the reciprocating residue cleaning head dredges the drop opening, which enables the drop opening to smoothly drop the material and ensures the safe operation of the equipment.

[0008] Further, the first sealing gasket is fixedly connected to the inner wall of the material box, and the first threaded rod is threadedly connected with the first sealing gasket.

[0009] By adopting the above technical scheme, the first sealing gasket increases the sealing performance of the connection between the first threaded rod and the material box.

[0010] Further, the slag cleaning head comprises a pair of first cleaning rods and a pair of second cleaning rods fixedly connected to the top end of the connecting rod.

[0011] By adopting the above technical scheme, the up-and-down reciprocating movement of the first cleaning rod and the second cleaning rod dredges the clogged coal slag in the material inlet.

[0012] Further, the connecting assembly is arranged between the connecting rod and the first threaded rod for fixing the connecting rod, the side wall of the material box is provided with a fixed hole communicating with the inside of the material box, the material box is connected with a cover plate for closing the fixed hole, and the fixing assembly for the cover plate is arranged between the cover plate and the material box.

[0013] By adopting the above technical scheme, when the slag cleaning head needs to be replaced, the fixing assembly releases the restriction on the cover plate, separates the cover plate from the material box, the connecting assembly releases the restriction on the connecting rod, and the connecting rod and the slag cleaning head are taken out through the fixed hole, then a new connecting rod and a new slag cleaning head are replaced, the connecting rod is connected and fixed with the first threaded rod through the connecting assembly, and the cover plate is connected and fixed with the material box through the fixing assembly.

[0014] Further, the connecting assembly comprises a plug-in rod fixedly connected to the lower end of the connecting rod, the upper surface of the first threaded rod is provided with a plug-in groove for the plug-in rod to plug in, the side wall of the first threaded rod is provided with a threaded hole, the threaded hole is threadedly connected with a connecting bolt, and the side wall of the plug-in rod is provided with a connecting groove for the connecting bolt to plug in.

[0015] By adopting the above technical scheme, the connecting bolt is plugged into the connecting groove, the plug-in rod is fixed in the plug-in groove, the connecting rod is connected and fixed with the first threaded rod, the connecting bolt is rotated to separate the connecting bolt from the connecting groove, the connecting bolt releases the restriction on the plug-in rod, the connecting rod is moved upward, the plug-in rod is separated from the plug-in groove, and the cleaning head can be taken down for replacement.

[0016] Further, the fixing assembly comprises a pair of second threaded rods fixedly connected to the outer wall of the material box, the cover plate is provided with a pair of connecting holes for the second threaded rods to plug in, and each second threaded rod is threadedly connected with a nut.

[0017] By adopting the above technical scheme, the nut abuts against the side of the cover plate away from the material box, the nut is tightened to connect and fix the cover plate with the material box, the nut is separated from the second threaded rod, the cover plate is moved away from the material box, the second threaded rod is separated from the connecting hole, the cover plate is separated from the material box, and the fixed hole is opened.

[0018] Further, the cover plate is fixedly connected with a second sealing gasket on the side close to the hopper.

[0019] By adopting the above technical scheme, the second sealing gasket increases the sealing performance when the cover plate closes the fixing hole.

[0020] Further, the blanking port side wall is provided with a reserved hole, a plug plate is slidably inserted into the reserved hole, the blanking port side wall is fixedly connected with a supporting plate, the upper surface of the supporting plate is fixedly connected with a hydraulic cylinder, and the piston rod of the hydraulic cylinder is fixedly connected with the plug plate.

[0021] By adopting the above technical scheme, the piston rod of the hydraulic cylinder can drive the plug plate to move horizontally, when the plug plate abuts against the inner wall of the blanking port, the plug plate closes the blanking port, and when the plug plate moves away from the blanking port, the plug plate opens the blanking port, and the cinder falls into the hopper.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] (1) The staff rotates the hand wheel, the hand wheel drives the first threaded rod, the connecting rod and the cinder removing head to move upward to the inside of the blanking port, reversely rotates the hand wheel, the hand wheel drives the first threaded rod, the connecting rod and the cinder removing head to move downward, rotates the hand wheel, makes the cinder removing head reciprocating motion, the cinder removing head dredges the cinder that the blanking port is blocked, and the blanking port is dredged through the reciprocating cinder removing head, so that the blanking port can smoothly fall, and the equipment safe operation effect is guaranteed.

[0024] (2) The first sealing gasket increases the sealing performance of the connecting place of the first threaded rod and the hopper.

[0025] (3) When the cinder removing head needs to be replaced, the fixing assembly removes the restriction on the cover plate, separates the cover plate from the hopper, the connecting assembly removes the restriction on the connecting rod, takes out the connecting rod and the cinder removing head through the fixing hole, then replaces the new connecting rod and the cinder removing head, connects and fixes the connecting rod and the first threaded rod through the connecting assembly, and connects and fixes the cover plate and the hopper through the fixing assembly. DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0027] Figure 1 It is a structural schematic view of the embodiment of the application.

[0028] Figure 2 is a schematic view embodying a first threaded rod in the embodiment;

[0029] Figure 3 is a schematic view embodying a fixing hole in the embodiment;

[0030] Figure 4 is a schematic view embodying a plug-in rod in the embodiment;

[0031] Figure 5 is a schematic view embodying a connecting bolt in the embodiment;

[0032] Figure 6 is a schematic view embodying a second threaded rod in the embodiment;

[0033] Figure 7 is a schematic view embodying a connecting hole in the embodiment.

[0034] The drawing label explanation: 1, blanking hole; 11, reserved hole; 12, plug-in plate; 13, support plate; 14, hydraulic cylinder; 2, material box; 21, first sealing gasket; 22, fixing hole; 3, first threaded rod; 31, connecting rod; 32, slag head; 321, first cleaning rod; 322, second cleaning rod; 33, hand wheel; 4, connecting assembly; 41, plug-in rod; 42, plug-in slot; 43, threaded hole; 44, connecting bolt; 45, connecting slot; 5, cover plate; 51, second sealing gasket; 6, fixing assembly; 61, second threaded rod; 62, connecting hole; 63, nut. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the utility model.

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the utility model. Figure 1 to the drawings Figure 7 The utility model is described in detail below with reference to specific embodiments.

[0037] As Figures 1 to 7The utility model provides a kind of dredging device for coal mill drop opening shown, drop opening 1 is arranged at the bottom of coal mill, and drop opening 1 bottom is fixedly connected with the obliquely arranged material box 2, drop opening 1 side wall is equipped with reserved hole 11, and reserved hole 11 is slidably inserted with plugboard 12, and drop opening 1 is fixedly connected with support plate 13 on the side equipped with reserved hole 11, and support plate 13 upper surface is fixedly connected with hydraulic cylinder 14, and the piston rod of hydraulic cylinder 14 is fixedly connected with plugboard 12.The piston rod of hydraulic cylinder 14 drives plugboard 12 to move, when plugboard 12 abuts with the inner wall of drop opening 1, plugboard 12 closes drop opening 1, when plugboard 12 moves to the side away from drop opening 1, plugboard 12 opens drop opening 1, and coal cinder falls into material box 2.

[0038] Dredging device includes first threaded rod 3 placed below drop opening 1, and first threaded rod 3 is vertically arranged and first threaded rod 3 is threadedly connected with the bottom of material box 2, and the top of first threaded rod 3 is connected with connecting rod 31, and the top of connecting rod 31 is connected with slag removal head 32, and first threaded rod 3 lower end is arranged out of material box 2, and first threaded rod 3 lower end is fixedly connected with hand wheel 33.In the process that plugboard 12 opens drop opening 1 and coal cinder falls, slag removal head 32 is located below and is placed close to the inner wall of material box 2.

[0039] When it is necessary to dredge the coal cinder blocked at drop opening 1, staff member rotates hand wheel 33, hand wheel 33 drives first threaded rod 3 to move upwards, first threaded rod 3 drives connecting rod 31 and slag removal head 32 to move upwards to the inside of drop opening 1, then reversely rotates hand wheel 33, hand wheel 33 drives first threaded rod 3 to move downwards, first threaded rod 3 drives connecting rod 31 and slag removal head 32 to move downwards, by rotating hand wheel 33, slag removal head 32 reciprocatingly moves, and slag removal head 32 dredges the coal cinder blocked at drop opening 1, after dredging is completed, slag removal head 32 is located below and is placed close to the inner wall of material box 2, and drop opening 1 is dredged by reciprocatingly moving slag removal head 32, with the effect that drop opening 1 can smoothly drop, and equipment safe operation is guaranteed.

[0040] The inner wall of material box 2 is fixedly connected with first sealing gasket 21, first threaded rod 3 is threadedly connected with first sealing gasket 21, and first sealing gasket 21 increases the sealing property of the connection of first threaded rod 3 and material box 2.

[0041] Slag removal head 32 includes a pair of first cleaning rods 321 and a pair of second cleaning rods 322 fixedly connected with the end of connecting rod 31 away from hand wheel 33, and first cleaning rod 321 and second cleaning rod 322 contact the blocked coal cinder, to dredge the coal cinder blocked in drop opening 1.

[0042] The connecting rod 31 is detachably connected with the first threaded rod 3, and the connecting rod 31 and the first threaded rod 3 are provided with a connecting assembly 4 for connecting and fixing the connecting rod 31 and the first threaded rod 3. The side wall of the material box 2 is provided with a fixing hole 22 which is arranged above the first sealing gasket 21 and is in communication with the inside of the material box 2. The outer wall of the bottom wall of the material box 2 abuts against a cover plate 5 which closes the fixing hole 22. The cover plate 5 and the material box 2 are provided with a fixing assembly 6 for connecting and fixing the cover plate 5 and the material box 2.

[0043] The slag head 32 may be replaced during the shutdown maintenance of the coal mill equipment. When the slag head 32 needs to be replaced, the fixing assembly 6 releases the restriction on the cover plate 5, the cover plate 5 is separated from the material box 2 to open the fixing hole 22, the connecting assembly 4 releases the restriction on the connecting rod 31, the connecting rod 31 is separated from the first threaded rod 3, the connecting rod 31 and the slag head 32 are taken out through the fixing hole 22, then a new connecting rod 31 and a new slag head 32 are replaced, the connecting rod 31 and the first threaded rod 3 are connected and fixed through the connecting assembly 4, and then the cover plate 5 and the material box 2 are connected and fixed through the fixing assembly 6.

[0044] The side of the cover plate 5 close to the fixing hole 22 is fixedly connected with a second sealing gasket 51. After the cover plate 5 is connected and fixed with the material box 2, the second sealing gasket 51 abuts against the outer wall of the material box 2, and the second sealing gasket 51 increases the sealing performance when the cover plate 5 closes the fixing hole 22.

[0045] The connecting assembly 4 comprises a plug-in rod 41 fixedly connected with the lower end of the connecting rod 31. The upper surface of the first threaded rod 3 is provided with a plug-in groove 42, and the plug-in rod 41 is plugged into the plug-in groove 42. The side wall of the first threaded rod 3 is provided with a threaded hole 43 which is in communication with the plug-in groove 42. A connecting bolt 44 is screwed into the threaded hole 43. The side of the plug-in rod 41 close to the threaded hole 43 is provided with a connecting groove 45, and the connecting bolt 44 is plugged into the connecting groove 45. The connecting bolt 44 connects and fixes the plug-in rod 41 and the first threaded rod 3, and then connects and fixes the connecting rod 31 and the first threaded rod 3.

[0046] When the slag head 32 needs to be replaced, the connecting bolt 44 is separated from the connecting groove 45, and the connecting rod 31 is moved upward to separate the plug-in rod 41 from the plug-in groove 42, so that the slag head 32 can be taken down for replacement.

[0047] The fixed assembly 6 comprises a pair of second threaded rods 61 fixedly connected with the outer wall of the hopper 2, the cover plate 5 is provided with a pair of connecting holes 62, the connecting holes 62 are arranged in one-to-one correspondence with the second threaded rods 61, the second threaded rods 61 are inserted into the connecting holes 62 and the second threaded rods 61 penetrate through the second sealing gaskets 51. Each second threaded rod 61 is threadedly connected with a nut 63, the nut 63 abuts against the side of the cover plate 5 away from the hopper 2, the nut 63 is tightened to connect and fix the cover plate 5 with the hopper 2.

[0048] When it is needed to open the fixed hole 22, the nut 63 is separated from the second threaded rod 61, then the cover plate 5 is moved away from the hopper 2, the second threaded rod 61 is separated from the connecting hole 62, the cover plate 5 is separated from the hopper 2, and the fixed hole 22 can be opened.

[0049] The working principle of the dredging device for the coal mill drop port is that: the staff rotates the hand wheel 33, the hand wheel 33 drives the first threaded rod 3 to move upwards, the first threaded rod 3 drives the connecting rod 31 and the slag cleaning head 32 to move upwards to the inside of the drop port 1, then the hand wheel 33 is reversely rotated, the hand wheel 33 drives the first threaded rod 3 to move downwards, the first threaded rod 3 drives the connecting rod 31 and the slag cleaning head 32 to move downwards, the slag cleaning head 32 reciprocates by rotating the hand wheel 33, and the slag cleaning head 32 dredges the coal slag blocked at the drop port 1.

[0050] The above is further described by means of specific embodiments, but it should be understood that the specific description herein should not be understood as limiting the essence and scope of the utility model, and various modifications made by the ordinary skilled in the art after reading the specification all belong to the scope protected by the utility model.

Claims

1. A device for clearing the discharge port of a coal mill, wherein the bottom of the discharge port (1) is fixedly connected to an inclined material box (2), characterized in that, The unblocking device includes a first threaded rod (3) that is threaded to the bottom of the material box (2). A connecting rod (31) is connected to the top of the first threaded rod (3). A slag removal head (32) is connected to the top of the connecting rod (31). The lower end of the first threaded rod (3) passes through the material box (2) and a handwheel (33) is fixedly connected to the lower end of the first threaded rod (3).

2. The unblocking device for the feed inlet of a coal mill according to claim 1, characterized in that, The inner wall of the material box (2) is fixedly connected to a first sealing gasket (21), and the first threaded rod (3) is threadedly connected to the first sealing gasket (21).

3. The unblocking device for the feed inlet of a coal mill according to claim 1, characterized in that, The slag removal head (32) includes a pair of first cleaning rods (321) and a pair of second cleaning rods (322) that are fixedly connected to the top of the connecting rod (31).

4. The unblocking device for the feed inlet of a coal mill according to claim 1, characterized in that, A connecting component (4) for fixing the connecting rod (31) is provided between the connecting rod (31) and the first threaded rod (3). A fixing hole (22) communicating with the inside of the material box (2) is provided on the side wall of the material box (2). A cover plate (5) for closing the fixing hole (22) is connected to the material box (2). A fixing component (6) for the cover plate (5) is provided between the cover plate (5) and the material box (2).

5. The unblocking device for the feed inlet of a coal mill according to claim 4, characterized in that, The connecting assembly (4) includes a plug rod (41) fixedly connected to the lower end of the connecting rod (31). The upper surface of the first threaded rod (3) is provided with a plug groove (42) for the plug rod (41) to be inserted. The side wall of the first threaded rod (3) is provided with a threaded hole (43). The threaded hole (43) is threadedly connected with a connecting bolt (44). The side wall of the plug rod (41) is provided with a connecting groove (45) for the connecting bolt (44) to be inserted.

6. The unblocking device for the feed inlet of a coal mill according to claim 4, characterized in that, The fixing component (6) includes a pair of second threaded rods (61) fixedly connected to the outer wall of the hopper (2). The cover plate (5) is provided with a pair of connecting holes (62) for the second threaded rods (61) to be inserted. Each second threaded rod (61) is threaded with a nut (63).

7. The unblocking device for the feed inlet of a coal mill according to claim 6, characterized in that, The cover plate (5) is fixedly connected to a second sealing gasket (51) on the side near the material box (2), and the second sealing gasket (51) abuts against the outer wall of the material box (2).

8. The unblocking device for the feed inlet of a coal mill according to claim 1, characterized in that, The side wall of the discharge port (1) is provided with a reserved hole (11), and a plate (12) is slidably inserted into the reserved hole (11). A support plate (13) is fixedly connected to the side wall of the discharge port (1). A hydraulic cylinder (14) is fixedly connected to the upper surface of the support plate (13). The piston rod of the hydraulic cylinder (14) is fixedly connected to the plate (12).

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