Pulverizer for coal mine
By setting up crushing components and crushing components in the coal mine crusher, the coal blocks are double crushed, and the problem of low crushing efficiency of large coal blocks in the prior art is solved, and a more efficient crushing process is achieved.
Patent Information
- Application Number
- CN202420604709.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The existing coal mine crushing device has low efficiency in crushing large pieces of coal, requiring secondary crushing, which increases the working intensity and time.
A crusher for coal mines is designed, including a crushing assembly and a crushing assembly, and pre-crumbing of large pieces of coal is performed by the crushing assembly, and then the coal block is further crushed by frictional impact of the grinding strip and the grinding block in the crushing assembly.
By double crushing the coal blocks, the need for secondary crushing is avoided, the working intensity is reduced, and the working efficiency is improved.
Smart Images
Figure CN222586761U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal block crushing in coal mines, in particular to a crusher for coal mines. Background Art
[0002] A coal mine refers to a place rich in coal resources, and usually refers to a factory that produces coal by underground or open-pit mining. Workers extract coal from the coal mine for subsequent use. Since the original form of coal resources is often large blocks, a crushing device is needed to break it into small pieces suitable for transportation and subsequent processing.
[0003] At present, most coal mining crushing devices on the market only crush coal blocks once. For large coal blocks, it takes a longer time to break them into small pieces, or even requires secondary crushing, which increases work intensity and reduces work efficiency.
[0004] Therefore, in order to solve the above problems, a coal mine pulverizer is proposed. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a coal mine pulverizer, which has the advantages of graded crushing of coal blocks, and solves the problem of reduced work efficiency due to one-time crushing in the prior art devices.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A coal mine pulverizer comprises a base, a crushing assembly and a crushing assembly, wherein the crushing assembly is mounted on the base, and the crushing assembly is arranged above the crushing assembly;
[0007] The crushing assembly includes a crushing box, the crushing box has a built-in cavity and is opened at both ends, a positioning rod is rotatably connected between the inner walls of the left and right side plates of the crushing box, a crushing roller is sleeved on the outer wall of the positioning rod, a rotating motor is installed on the outer wall of the right side plate of the crushing box, and the output shaft of the rotating motor passes through the right side plate of the crushing box and is connected to the other end of the positioning rod;
[0008] Among them, the crushing assembly includes a crushing box and a supporting column, the crushing box is installed at the lower end of the crushing box, the crushing box has a built-in cavity and an opening at the lower end, the supporting column is located at the center of the crushing box, a plurality of grinding strips arranged vertically are installed around the outer wall of the supporting column, a plurality of grinding blocks arranged staggered are installed around the inner wall of the side plate of the crushing box, the grinding strips correspond to the grinding blocks, a crushing motor is installed at the center of the lower surface of the top plate of the base platform, and the output end of the crushing motor vertically penetrates the top plate of the base platform and is connected to the center of the bottom of the bearing column.
[0009] Furthermore, a feed hopper is arranged at the upper end of the crushing box, and the feed hopper is arranged in a quadrangular pyramid shape which is wide at the top and narrow at the bottom.
[0010] Furthermore, a first bearing is embedded on the inner wall of the left side plate of the crushing box, one end of the positioning rod is connected to the inner wall of the inner ring of the first bearing, and the positioning rod is rotationally connected to the crushing box through the first bearing and the rotating motor.
[0011] Furthermore, a limiting groove is provided at the center of the top plate of the crushing box, and the bottom of the crushing box is connected to the top of the limiting groove.
[0012] Furthermore, a second guide plate is installed at the bottom of the crushing box, and a plurality of mounting plates are installed at intervals at the bottom of the second guide plate.
[0013] Furthermore, a second bearing is sleeved on the outer wall of the lower end of the bearing column, and a first guide plate is sleeved on the outer wall of the outer ring of the second bearing.
[0014] Furthermore, the first guide plate corresponds to the second guide plate, and the bottom of the second guide plate is connected to the other end of the upper surface of the mounting plate.
[0015] Furthermore, both the first bearing and the second bearing are sealed bearings.
[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0017] The coal mine crusher utilizes the crushing assembly to pre-crush large coal blocks, making the volume of the large coal blocks smaller. Then, under the action of the crushing assembly, the pre-treated coal blocks are further crushed into smaller crushed coal blocks under the friction and impact of the grinding bars and the grinding blocks. The device avoids the need for secondary crushing by double crushing the original coal blocks, reduces work intensity and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional schematic diagram of the overall installation structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the crushing box of the utility model;
[0020] Figure 3 It is a three-dimensional schematic diagram of the connection between the grinding pressure strip and the bearing column of the utility model structure.
[0021] In the figure: 1, base; 2, crushing assembly; 21, crushing box; 22, feed hopper; 23, positioning rod; 24, first bearing; 25, crushing roller; 26, rotating motor; 3, crushing assembly; 31, crushing motor; 32, bearing column; 33, grinding strip; 34, second bearing; 35, first guide plate; 36, mounting plate; 37, second guide plate; 38, crushing box; 39, grinding block. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1-3 In this embodiment, a coal mine crusher is used, which uses the crushing component 2 to pre-crush large pieces of coal to reduce the volume of the large pieces of coal raw materials. Then, under the action of the crushing component 3, the pre-treated coal blocks are further crushed into smaller pieces of crushed coal under the friction and impact of the grinding strips 33 and the grinding blocks 39. The device avoids the need for secondary crushing by double crushing the original coal blocks, reduces work intensity and improves work efficiency.
[0024] Specifically, in this embodiment, a coal mine pulverizer includes a base 1, a crushing assembly 2 and a crushing assembly 3; the crushing assembly 3 is mounted on the base 1, and the crushing assembly 2 is arranged above the crushing assembly 3;
[0025] The crushing assembly 2 includes a crushing box 21, which has a cavity inside and openings at both ends. A positioning rod 23 is rotatably connected between the inner walls of the left and right side plates of the crushing box 21. A crushing roller 25 is sleeved on the outer wall of the positioning rod 23. A rotating motor 26 is installed on the outer wall of the right side plate of the crushing box 21. The output shaft of the rotating motor 26 passes through the right side plate of the crushing box 21 and is connected to the other end of the positioning rod 23.
[0026] Among them, the crushing assembly 3 includes a crushing box 38 and a bearing column 32. The crushing box 38 is installed at the lower end of the crushing box 21. The crushing box 38 has a built-in cavity and an opening at the lower end. The bearing column 32 is located at the center of the crushing box 21. A plurality of grinding strips 33 arranged vertically are installed around the outer wall of the bearing column 32. A plurality of grinding blocks 39 arranged in an offset manner are installed around the inner wall of the side plate of the crushing box 38. The grinding strips 33 correspond to the grinding blocks 39. A crushing motor 31 is installed at the center of the lower surface of the top plate of the base 1. The output end of the crushing motor 31 vertically penetrates the top plate of the base 1 and is connected to the center of the bottom of the bearing column 32.
[0027] During actual use, the user turns on the rotating motor 26 so that the rotating motor 26 drives the positioning rod 23 to rotate, and then drives the crushing roller 25 to rotate, so that large pieces of coal are subjected to the impact shear force of the high-speed rotating cutter installed on the outer wall of the crushing roller 25, and are broken into smaller pieces of coal; the crushed coal pieces enter the crushing box 38, and the crushing motor 31 drives the supporting column 32 and the grinding bar 33 to rotate, and then drives the coal pieces between the grinding bar 33 and the grinding block 39 to rotate, and under the action of the friction and impact between the grinding bar 33 and the grinding block 39, the coal pieces are further crushed into finer pieces of crushed coal.
[0028] A feed hopper 22 is arranged at the upper end of the crushing box 21. The feed hopper 22 is arranged in a quadrangular pyramid shape which is wide at the top and narrow at the bottom.
[0029] A first bearing 24 is embedded on the inner wall of the left side plate of the crushing box 21 , one end of the positioning rod 23 is connected to the inner wall of the inner ring of the first bearing 24 , and the positioning rod 23 is rotatably connected to the crushing box 21 through the first bearing 24 and the rotating motor 26 .
[0030] A limiting groove is provided at the center of the top plate of the crushing box 38, and the bottom of the crushing box 21 is connected to the top of the limiting groove.
[0031] The coal blocks crushed by the crushing assembly 2 can enter the crushing box 38 through the limiting groove.
[0032] A second guide plate 37 is installed at the bottom of the crushing box 38 , and a plurality of mounting plates 36 are installed at intervals at the bottom of the second guide plate 37 .
[0033] A second bearing 34 is sleeved on the outer wall of the lower end of the bearing column 32 , and a first guide plate 35 is sleeved on the outer wall of the outer ring of the second bearing 34 .
[0034] The first guide plate 35 corresponds to the second guide plate 37 , and the bottom of the second guide plate 37 is connected to the other end of the upper surface of the mounting plate 36 .
[0035] Through the first guide plate 35 and the second guide plate 37 , the crushed coal blocks after friction and collision with the grinding strips 33 and the grinding blocks 39 can be discharged from the gap between the first guide plate 35 and the second guide plate 37 .
[0036] The first bearing 24 and the second bearing 34 are both sealed bearings.
[0037] The first bearing 24 and the second bearing 34 are sealed bearings to prevent coal slag from splashing into the first bearing 24 and the second bearing 34 during the process of crushing the coal blocks, thereby causing blockage and wear of the first bearing 24 and the second bearing 34 over time.
[0038] The working principle of the above embodiment is:
[0039] In the first step, the user pours large pieces of raw coal into the crushing box 21 through the feed hopper 22, and then turns on the rotating motor 26, so that the rotating motor 26 drives the positioning rod 23 and the crushing roller 25 to rotate, so that the large pieces of coal are subjected to the impact shear force of the high-speed rotating cutter installed on the outer wall of the crushing roller 25, thereby being broken into smaller pieces of coal.
[0040] In the second step, the coal blocks crushed by the crushing roller 25 enter the crushing box 38 through the limiting groove, and the user turns on the crushing motor 31 to drive the supporting column 32 and the grinding bar 33 to rotate, thereby driving the coal blocks between the grinding bar 33 and the grinding block 39 to rotate. Under the action of the friction and impact of the grinding bar 33 and the grinding block 39, the coal blocks are further crushed into finer crushed coal blocks. The crushed coal blocks after the friction and impact of the grinding bar 33 and the grinding block 39 can be discharged from the gap between the first guide plate 35 and the second guide plate 37, so as to realize the crushing of large original coal blocks into crushed coal blocks. The device avoids the need for secondary crushing by double crushing of the original coal blocks, reduces work intensity and improves work efficiency.
[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A coal mine pulverizer, comprising a base (1), a crushing assembly (2) and a pulverizing assembly (3), characterized in that: The pulverizing assembly (3) is mounted on the base (1), and the crushing assembly (2) is arranged above the pulverizing assembly (3); The crushing assembly (2) comprises a crushing box (21), the crushing box (21) has a cavity inside and is opened at both ends, a positioning rod (23) is rotatably connected between the inner walls of the left and right side plates of the crushing box (21), a crushing roller (25) is sleeved on the outer wall of the positioning rod (23), a rotating motor (26) is installed on the outer wall of the right side plate of the crushing box (21), and the output shaft of the rotating motor (26) passes through the right side plate of the crushing box (21) and is connected to the other end of the positioning rod (23); The crushing assembly (3) comprises a crushing box (38) and a bearing column (32), wherein the crushing box (38) is installed at the lower end of the crushing box (21), the crushing box (38) has a built-in cavity and an opening at the lower end, the bearing column (32) is located at the center of the crushing box (21), a plurality of grinding strips (33) arranged vertically are arranged around the outer wall of the bearing column (32), a plurality of grinding blocks (39) arranged offset are arranged around the inner wall of the side plate of the crushing box (38), the grinding strips (33) correspond to the grinding blocks (39), a crushing motor (31) is installed at the center of the lower surface of the top plate of the base platform (1), and the output end of the crushing motor (31) vertically penetrates the top plate of the base platform (1) and is connected to the center of the bottom of the bearing column (32).
2. A coal mine pulverizer according to claim 1, characterized in that: A feed hopper (22) is arranged at the upper end of the crushing box (21), and the feed hopper (22) is arranged in the shape of a quadrangular pyramid that is wide at the top and narrow at the bottom.
3. A coal mine pulverizer according to claim 1, characterized in that: A first bearing (24) is embedded on the inner wall of the left side plate of the crushing box (21), one end of the positioning rod (23) is connected to the inner wall of the inner ring of the first bearing (24), and the positioning rod (23) is rotatably connected to the crushing box (21) through the first bearing (24) and the rotating motor (26).
4. A coal mine pulverizer according to claim 1, characterized in that: A limiting groove is provided at the center of the top plate of the crushing box (38), and the bottom of the crushing box (21) is connected to the top of the limiting groove.
5. A coal mine pulverizer according to claim 1, characterized in that: A second guide plate (37) is installed at the bottom of the crushing box (38), and a plurality of mounting plates (36) are installed at intervals at the bottom of the second guide plate (37).
6. A coal mine pulverizer according to claim 1, characterized in that: A second bearing (34) is sleeved on the outer wall of the lower end of the bearing column (32), and a first guide plate (35) is sleeved on the outer wall of the outer ring of the second bearing (34).
7. A coal mine pulverizer according to claim 6, characterized in that: The first guide plate (35) corresponds to the second guide plate (37), and the bottom of the second guide plate (37) is connected to the other end of the upper surface of the mounting plate (36).
8. A coal mine pulverizer according to claim 3, characterized in that: The first bearing (24) and the second bearing (34) are both sealed bearings.