Movable scraper of medium-speed coal mill

Abstract

The utility model is applicable to the technical field of coal mills, and provides a movable scraper blade of a medium-speed coal mill, which comprises a support rack, and two threaded rods are driven to move downwards to jointly drive a scraper blade body to move downwards, so that the effect of adjusting the position of the scraper blade body is achieved, the bottom of the scraper blade body can be attached to the bottom of a deslagging chamber again, and the service life of the scraper blade body is prolonged. The situation that normal coal scraping operation of the scraper body is affected due to the fact that the scraper body is abraded and a gap is formed between the bottom of the scraper body and the slag discharging chamber is avoided, so that stable operation of the coal mill is guaranteed, and the three fixing screws are driven to move backwards to make contact with the position, close to the top, of the front side of the scraper body clamped into the fixing frame, so that the scraper body is more stable in operation. And therefore, the position of the scraping plate body can be further limited, the stability of the scraping plate body can be improved, the situation that the scraping plate body can fall off is avoided, and actual use is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mill technical field especially relates to the movable scraper of medium speed coal mill. BACKGROUND

[0002] Coal mill is a kind of machinery for breaking and grinding coal into powder, is the important auxiliary equipment of coal powder furnace, can be divided into: low speed coal mill, medium speed coal mill and high speed coal mill according to the different speed, medium speed coal mill refers to the coal mill of working speed at 50~300r / min, belongs to the processing professional equipment of blast furnace ironmaking auxiliary material, can be widely applied to electric power, metallurgy, building materials and chemical industry etc., and movable scraper is an important component part on medium speed coal mill, it is the device for discharging stone coal in the coal mill to the outside of body, is usually installed in the slag chamber.

[0003] The position of the scraper of the traditional movable scraper of medium speed coal mill is fixed and cannot be adjusted, when the scraper is worn, the position cannot be adjusted, so that the gap between the bottom of the scraper and the slag chamber appears, which will affect the normal coal scraping operation of the scraper, and the stability of the scraper of the traditional movable scraper of medium speed coal mill is poor, so that the scraper will fall off, thereby being not conducive to actual use. UTILITY MODEL CONTENTS

[0004] The utility model provides movable scraper of medium speed coal mill, aims at solving the position of the scraper of the existing movable scraper of medium speed coal mill is fixed and cannot be adjusted, and the stability of the scraper is poor.

[0005] The utility model is realized in this way, movable scraper of medium speed coal mill, including support rack, the bottom of support rack is connected with the lifting lug close to the center of left and right sides, the side close to the center of bottom of two lifting lug is connected with the connecting shaft, the connecting shaft is equipped with the connecting lug close to the left and right ends, two connecting lug is symmetrically arranged with the connecting shaft inner cavity center as the axis of symmetry, and the bottom of two connecting lug is connected with the connecting plate, the bottom of connecting plate is close to the center of the scraper body, the top of scraper body is connected with the fixed frame, the top of connecting plate has adjusting assembly, adjusting assembly includes the fixed box in the top of connecting plate close to the center, and the bottom of fixed box is connected with the top of connecting plate close to the center.

[0006] Preferably, the cross section of the fixed box is U-shaped, and the U-shaped structure of the fixed box is downwardly open.

[0007] Preferably, the fixing box cavity is provided with threaded rods near the centers of the left and right sides, and the two threaded rods are symmetrically arranged with the center of the fixing box cavity as the axis of symmetry, the fixing box top near the centers of the left and right sides and the connecting plate inner cavity near the centers of the left and right sides are provided with through holes, the upper and lower ends of the two threaded rods penetrate the adjacent through hole cavities, the top ends of the two threaded rods are connected with limit discs, and the bottom ends of the two threaded rods are connected with the fixing frame top near the centers of the left and right sides.

[0008] Preferably, the top of each threaded rod near the bottom end is sleeved with a driven gear, and the bottom of each driven gear is movably connected with the connecting plate top near the centers of the left and right sides, the inner cavity of each driven gear near the center is provided with a first driving hole, and the inner wall of each first driving hole is provided with an inner thread matched with the threaded rod, and the adjacent sides of the two driven gears are commonly provided with a driving gear, the driving gear is engaged between the two driven gears, and the bottom of the driving gear is movably connected with the connecting plate top near the center.

[0009] Preferably, the top of each threaded rod near the bottom end is sleeved with a driven gear, and the bottom of each driven gear is movably connected with the connecting plate top near the centers of the left and right sides, the inner cavity of each driven gear near the center is provided with a first driving hole, and the inner wall of each first driving hole is provided with an inner thread matched with the threaded rod, and the adjacent sides of the two driven gears are commonly provided with a driving gear, the driving gear is engaged between the two driven gears, and the bottom of the driving gear is movably connected with the connecting plate top near the center.

[0010] Preferably, the inner cavity of the fixing frame near the bottom of the front side is provided with a plurality of round holes, the inner cavities of the plurality of round holes are movably connected with fixing screws, the distances between adjacent two fixing screws are the same, the front and rear ends of the plurality of fixing screws penetrate the inner cavities of adjacent round holes, and the front ends of the plurality of fixing screws are connected with stop discs.

[0011] Preferably, the top of each threaded rod near the bottom end is sleeved with a driven gear, and the bottom of each driven gear is movably connected with the connecting plate top near the centers of the left and right sides, the inner cavity of each driven gear near the center is provided with a first driving hole, and the inner wall of each first driving hole is provided with an inner thread matched with the threaded rod, and the adjacent sides of the two driven gears are commonly provided with a driving gear, the driving gear is engaged between the two driven gears, and the bottom of the driving gear is movably connected with the connecting plate top near the center.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] By moving the two threaded rods downwards, the scraper body is moved downwards in conjunction with the two threaded rods, thereby adjusting the position of the scraper body and ensuring that its bottom is once again in contact with the bottom of the slag discharge chamber. This prevents wear and tear on the scraper body, which could create gaps between the bottom and the slag discharge chamber and affect the normal coal scraping operation of the scraper body. This helps to ensure the stable operation of the coal mill. Furthermore, by moving the three fixed screws backwards to contact the front side of the scraper body, which is inserted into the fixed frame, near the top, the position of the scraper body is further restricted, thereby improving the stability of the scraper body and preventing the risk of the scraper body falling off, which is beneficial for practical use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of a partial component of this utility model;

[0016] Figure 3 This is a partial left-side view of the component fixing bracket of this utility model;

[0017] Figure 4 This is a partial top view of the component fixing box of this utility model.

[0018] In the diagram: 1. Support frame; 2. Lifting lug; 3. Adjustment assembly; 31. Fixing box; 32. Handle; 33. Threaded rod; 34. Limiting plate; 35. Driven gear; 36. Rotating shaft; 37. Drive gear; 4. Connecting plate; 5. Scraper body; 6. Rotating handle; 7. Fixing frame; 8. Baffle; 9. Connecting lug; 10. Connecting shaft; 11. Fixing screw. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This utility model embodiment provides a movable scraper for a medium-speed coal mill, such as... Figures 1-4 As shown, the support frame 1 is provided. A lifting lug 2 is connected to the bottom of the support frame 1 near the center of both the left and right sides. A connecting shaft 10 is connected to the adjacent side of the two lifting lugs 2 near the center of the bottom. Connecting ears 9 are fitted onto the connecting shaft 10 near both the left and right ends. The two connecting ears 9 are symmetrically arranged about the center of the inner cavity of the connecting shaft 10, and a connecting plate 4 is connected to the bottom of the two connecting ears 9. A scraper body 5 is located near the center of the bottom of the connecting plate 4. A fixing frame 7 is snapped onto the scraper body 5 near the center of the top. An adjustment assembly 3 is located on the top of the connecting plate 4. The adjustment assembly 3 includes a fixing box 31 located near the center of the top of the connecting plate 4, and the bottom of the fixing box 31 is connected to the top of the connecting plate 4 near the center.

[0022] It should be noted that, since the position of the existing movable scraper of the medium-speed coal mill is fixed and cannot be adjusted, the stability of the scraper is poor. Therefore, in order to solve the problems that occur during the use of the existing movable scraper of the medium-speed coal mill, this solution solves the problem of the fixed and non-adjustable position of the scraper and the poor stability of the scraper by adding an adjustment component 3 to the top of the connecting plate 4 and using the cooperation of various components on the fixing frame 7.

[0023] In a further preferred embodiment of this utility model, such as Figure 1 and 2 As shown, the cross-section of the fixing box 31 is U-shaped, and the opening of the U-shaped structure of the fixing box 31 faces downward.

[0024] In this embodiment, by setting the fixed box 31 as a U-shaped structure with the opening facing downwards, the integrity of the movable scraper structure of the medium-speed coal mill is ensured, so that the components inside the fixed box 31 can be used in a better manner.

[0025] In a further preferred embodiment of this utility model, such as Figure 1 , 2As shown in FIGS. 1, 2, 3 and 4, the inner cavity of the fixed box 31 is provided with two threaded rods 33 near the centers of the left and right sides, and the two threaded rods 33 are symmetrically arranged with the center of the inner cavity of the fixed box 31 as the axis of symmetry. The top of the fixed box 31 is provided with through holes near the centers of the left and right sides, and the inner cavity of the connecting plate 4 is also provided with through holes near the centers of the left and right sides. The upper and lower ends of the two threaded rods 33 penetrate the inner cavities of the adjacent through holes, and the top ends of the two threaded rods 33 are connected with limit plates 34, and the bottom ends of the two threaded rods 33 are connected with the top of the fixed frame 7 near the centers of the left and right sides.

[0026] In this embodiment, when the bottom of the scraper body 5 is worn and a gap appears between the bottom and the slag discharge chamber, at this time, the workers drive the two threaded rods 33 to move downward, and the downward movement of the two threaded rods 33 can drive the fixed frame 7 to move downward, and the downward movement of the fixed frame 7 can drive the scraper body 5 to move downward, so as to adjust the position of the scraper body 5, so that the bottom of the scraper body 5 can be recombined with the bottom of the slag discharge chamber, avoiding the problem that the wear of the bottom of the scraper body 5 and the gap between the bottom and the slag discharge chamber affect the normal coal scraping operation of the scraper body 5, thereby ensuring the stable operation of the coal mill.

[0027] In further preferred embodiments of the present application, as shown in FIGS. 1, 2, 3 and 4, Figure 1 , 2 As shown in FIGS. 1, 2, 3 and 4, the top of the fixed box 31 is provided with through holes near the centers of the left and right sides, and the inner cavity of the connecting plate 4 is also provided with through holes near the centers of the left and right sides. The upper and lower ends of the two threaded rods 33 penetrate the inner cavities of the adjacent through holes, and the top ends of the two threaded rods 33 are connected with limit plates 34, and the bottom ends of the two threaded rods 33 are connected with the top of the fixed frame 7 near the centers of the left and right sides.

[0028] In this embodiment, the workers drive the driving gear 37 to rotate reversely, and the reverse rotation of the driving gear 37 can drive the two driven gears 35 to rotate synchronously in the forward direction, because the two driven gears 35 are threadedly engaged with the adjacent threaded rods 33 through the adjacent first driving holes, so that the two driven gears 35 can drive the two threaded rods 33 to move downward synchronously, and then the two threaded rods 33 can quickly drive the fixed frame 7 to move downward, so as to quickly adjust the position of the scraper body 5.

[0029] In further preferred embodiments of the present application, as shown in FIGS. 1, 2, 3 and 4, Figure 1 , 2As shown in FIGS. 4, the top of the driving gear 37 is connected with a rotating shaft 36 near the center, the top of the fixed box 31 is provided with a rotating hole near the center, the top end of the rotating shaft 36 penetrates the inner cavity of the rotating hole, and the handle 32 is connected.

[0030] In this embodiment, the staff reversely rotates the handle 32, so that the handle 32 can quickly drive the driving gear 37 to reversely rotate through the rotating shaft 36.

[0031] In further preferred embodiments of the utility model, as shown in Figure 1 and 3 , the front side of the inner cavity of the fixed frame 7 is provided with a plurality of round holes near the bottom, a plurality of fixed screws 11 are movably connected in the inner cavities of the round holes, the intervals between the adjacent two fixed screws 11 are the same, the front and rear ends of the plurality of fixed screws 11 penetrate the inner cavities of the adjacent round holes, and the front ends of the plurality of fixed screws 11 are connected with the flapper 8.

[0032] In this embodiment, when the staff clamps the scraper body 5 into the fixed frame 7, the staff moves the three fixed screws 11 backward in sequence, so that the three fixed screws 11 are in contact with the front side of the scraper body 5 clamped into the fixed frame 7 near the top, thereby further limiting the position of the scraper body 5, and the stability of the scraper body 5 is improved, so that the problem of falling of the scraper body 5 is avoided, and the actual use is facilitated.

[0033] In further preferred embodiments of the utility model, as shown in Figure 1 and 3 , the front end of each of the plurality of fixed screws 11 is sleeved with a handle 6, the handle 6 is movably connected with the front side of the fixed frame 7 near the bottom, the inner cavity of the handle 6 is provided with a second driving hole near the center, and the inner wall of the second driving hole is provided with an inner thread matched with the fixed screw 11.

[0034] In this embodiment, when the staff clamps the scraper body 5 into the fixed frame 7, the staff drives the three handles 6 to rotate forward in sequence, because the three handles 6 are threadedly engaged with the adjacent fixed screws 11 through the adjacent second driving holes, so that the three handles 6 can quickly drive the three fixed screws 11 to move backward.

[0035] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the action sequence described, because according to the present application, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0036] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented by other ways. For example, the device embodiments described above are only illustrative, for example, the division of the above units, actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between devices or units, which can be electrical or other forms.

[0037] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0038] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Although the present application is described in detail with reference to the above embodiments, those skilled in the art can still combine, add or delete or make other adjustments to the features in each embodiment of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope of the present application.

Claims

1. A moving scraper for a medium speed coal mill, characterised in that, The utility model provides a support rack (1) and a scraping plate body (5) are connected, and the scraping plate body (5) is provided with a fixed frame (7) and an adjusting assembly (3) on the top of the connecting plate (4) The adjusting assembly (3) comprises a fixed box (31) located on the top of the connecting plate (4) near the center. The fixed box (31) is in the shape of U in cross section, and the opening of the U-shaped structure of the fixed box (31) faces downward.

2. The moving scraper of the medium speed coal mill according to claim 1, characterized in that, Threaded rods (33) are arranged near the centers of the left and right sides in the inner cavity of the fixed box (31), and the two threaded rods (33) are symmetrically arranged left and right with the center of the inner cavity of the fixed box (31) as the axis of symmetry.

3. The medium speed coal mill flight as claimed in claim 1, wherein, The top of the fixed box (31) near the centers of the left and right sides and the inner cavity of the connecting plate (4) near the centers of the left and right sides are both provided with through holes, and the upper and lower ends of the two threaded rods (33) both penetrate the inner cavities of the adjacent through holes.

4. The medium speed coal mill flight as claimed in claim 3, wherein, Driven gears (35) are arranged on the threaded rods (33) near the bottom ends, and the driven gears (35) are movably connected to the top of the connecting plate (4) near the centers of the left and right sides. The inner cavities of the driven gears (35) near the centers are both provided with first driving holes, and the inner walls of the first driving holes are both provided with internal threads matched with the threaded rods (33).

5. The medium speed coal mill flight as claimed in claim 4, wherein, Drive gears (37) are arranged on the adjacent sides of the two driven gears (35), and the drive gears (37) are engaged with the two driven gears (35), and the drive gears (37) are movably connected to the top of the connecting plate (4) near the center.

6. The medium speed coal mill flight as claimed in claim 1, wherein, The top of the drive gear (37) near the center is connected with a rotating shaft (36), the top of the fixed box (31) near the center is provided with a rotating hole, the top end of the rotating shaft (36) penetrates the inner cavity of the rotating hole, and a handle (32) is connected. A plurality of round holes are arranged on the front side of the inner cavity of the fixed frame (7) near the bottom, a plurality of fixed screws (11) are movably connected in the inner cavities of the round holes, the distances between the adjacent fixed screws (11) are the same, the front and rear ends of the plurality of fixed screws (11) penetrate the inner cavities of the adjacent round holes, and the front ends of the plurality of fixed screws (11) are connected with stop discs (8).

7. A medium speed coal mill flight as claimed in claim 6, wherein, A plurality of fixed screw rods (11) are sleeved with handles (6) near the front end, and a plurality of handles (6) are movably connected with the front side of the fixed frame (7) near the bottom. A second drive hole is formed in the inner cavity of each handle (6) near the center, and an inner thread matched with the fixed screw rod (11) is formed in the inner wall of each second drive hole.

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