Coal mining ore screening method and device

Abstract

The invention relates to the technical field of coal mining, in particular to a coal mining ore screening method and device.The coal mining ore screening device comprises a smashing mechanism, the smashing mechanism comprises a smashing box, two sets of smashing rollers are rotationally installed on the inner wall of the smashing box, and first movable rods are fixedly installed at the front ends of the smashing rollers; a first gear is fixedly mounted on the surface of the first movable rod, a second movable rod is rotatably mounted on the front side of the inner wall of the crushing box, and a second gear meshed with the first gear is fixedly mounted on the surface of the second movable rod. The screening assembly is located at the bottom of the crushing mechanism and comprises a screen and a flow guide plate, the bottom of the flow guide plate and the bottom of the inner wall of the crushing box are fixedly installed, crushing is conducted through the crushing roller according to the coal mining ore screening method, and then the crushed ore enters the screen; and then the screen is knocked by the knocking block, at the moment, the ores in the screen fall onto the flow guide plate, and the ores on the flow guide plate flow out of the crushing box.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, and in particular to a method and device for screening ore in coal mining. Background Art

[0002] Ore refers to a mineral aggregate from which useful components can be extracted or which itself has certain properties that can be utilized. Stone is an indispensable construction resource in construction projects. The mined ore is usually crushed and processed into gravel of different particle sizes to be used as construction materials for different types of construction projects. When coal ore is mined, particles of different sizes need to be screened, and the ore needs to be crushed before screening. However, the existing screening device screen and crushing roller are operated at the same time. When there is a lot of ore accumulated in the screen, the crushing roller will continue to crush it. This will not only cause the ore crushed by the crushing roller to overflow in the screen, but also cause part of the ore in the screen to be unable to be screened, resulting in poor ore screening effect. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above problems existing in the existing coal mining ore screening device, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a coal mining ore screening device, the purpose of which is to be able to adjust the rotation speed of the crushing roller when too much ore is accumulated in the screen.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a crushing mechanism, which comprises a crushing box, the inner wall of which is rotatably mounted with two groups of crushing rollers, the front end of which is fixedly mounted with a first movable rod, the surface of which is fixedly mounted with a first gear, the front side of the inner wall of the crushing box is rotatably mounted with a second movable rod, the surface of which is fixedly mounted with a second gear meshing with the first gear; A screening component, the screening component is located at the bottom of the crushing mechanism, the screening component comprises a screen and a guide plate, and the bottom of the guide plate and the bottom of the inner wall of the crushing box are fixedly installed; The speed regulating assembly comprises a connecting frame, a worm is rotatably mounted inside the connecting frame, a worm wheel meshing with the worm is fixedly mounted on the surface of the second movable rod, and a support plate is fixedly mounted on the top of the guide plate.

[0007] As a preferred solution of the coal mining ore screening device described in the present invention, wherein: a first pulley is provided on the surface of the second movable rod, a first bearing is fixedly installed inside the first pulley, the inside of the first bearing and the surface of the second movable rod are fixedly installed, a round sleeve is fixedly installed on the surface of the first bearing, a clamping groove is provided inside the round sleeve, slides are fixedly installed on both sides of the surface of the second movable rod, an insert block is slidably installed on the surface of the second movable rod, the insert block and the slide block are slidably installed, the insert block and the clamping groove are plugged into, a motor is fixedly installed on the bottom of the front side of the crushing box, a rotating rod is fixedly installed on the output end of the motor, a second pulley is fixedly installed on the surface of the rotating rod, a belt is provided inside the crushing box, the first pulley and the second pulley are installed through belt drive, and a second bearing is fixedly installed on the back of the round sleeve.

[0008] As a preferred solution of the coal mining ore screening device described in the present invention, a knocking block is arranged on the right side of the screen, a connecting rod is rotatably installed inside the crushing box, a first bevel gear is fixedly installed on the surface of the connecting rod, a second bevel gear meshing with the first bevel gear is fixedly installed on the surface of the rotating rod, the surface of the connecting rod is fixedly installed on the knocking block, the back side of the knocking block contacts the front side of the screen, tension springs are fixedly installed on the four corners of the top of the screen, a mounting block is fixedly installed on the top of the tension spring, and the outer side of the mounting block is fixedly installed on the inner wall of the crushing box.

[0009] As a preferred solution of the coal mining ore screening device described in the present invention, a third bevel gear is fixedly installed at the bottom of the worm, a circular groove is opened inside the third bevel gear, a slide rod is slidably installed inside the circular groove, a tooth block is fixedly installed at one end of the slide rod, a first spring is sleeved on the surface of the slide rod, one side of the first spring is fixedly installed on one side of the inner wall of the circular groove, the other end of the first spring is fixedly installed on the other side of the inner wall of the circular groove, the third bevel gear is meshed with the second bevel gear, and the tooth block is meshed with the second bevel gear.

[0010] As a preferred solution of the coal mining ore screening device described in the present invention, wherein: a limit frame is rotatably installed on the surface of the worm, the limit frame and the rotating rod are slidably installed, a connecting groove is opened at the bottom of the crushing box, the limit frame and the connecting groove are slidably installed, a fixed rod is fixedly installed on the back of the limit frame, a triangular block is fixedly installed on the bottom of the screen, the bottom of the triangular block is in contact with the surface of the fixed rod, a round block is fixedly installed on the surface of the fixed rod, a second spring is sleeved on the surface of the fixed rod, the back of the second spring is fixedly installed on the front end of the round block, the front end of the first spring is fixedly installed on the back of the limit frame, and the bottom of the fixed rod is in contact with the top of the support plate.

[0011] As a preferred solution of the coal mining ore screening device described in the present invention, the first tooth plate is fixedly installed on the top and bottom of the front side of the connecting frame, the third gear is rotatably installed on the right side of the inner wall of the crushing box, the first tooth plate and the third gear are meshed, the surface of the third gear is meshed with the second tooth plate, the second tooth plate is located on the outer side of the first tooth plate, a connecting plate is fixedly installed on one side of the second tooth plate, balls are inlaid on the back of the connecting plate, and an annular groove is opened on the front side of the second bearing.

[0012] As a preferred solution of the coal mining ore screening device described in the present invention, a disc is fixedly installed on the surface of the second movable rod, spring pieces are fixedly installed on both sides of the front side of the disc, and the front end of the spring piece and the back side of the plug are fixedly installed.

[0013] The beneficial effects of the present invention are as follows: the ore can be placed in a crushing box and crushed by a crushing roller, and then the crushed ore will enter the screen, and then the screen will be struck by a striking block, at which time the ore in the screen will fall onto the guide plate, and the ore on the guide plate will flow out of the crushing box.

[0014] In view of the above problems existing in the existing coal mining ore screening method, the present invention is proposed.

[0015] Therefore, the object of the present invention is to provide a method for screening coal mining ore, the purpose of which is: when there is too much ore inside the screen, two sets of crushing rollers will be controlled to rotate slowly, thereby adjusting the rotation speed of the crushing rollers.

[0016] In order to solve the above technical problems, the present invention provides the following technical solutions: when the crushing roller crushes too much ore, more and more ore will be accumulated in the screen. At this time, the speed of the crushing roller can be adjusted by the speed regulating component, and when the speed of the speed regulating component is reduced, the screening efficiency of the screen remains unchanged. When the weight of the ore inside the screen becomes lighter, the speed regulating component will restore the crushing roller to its previous speed. At this time, the crushing efficiency will be faster than the screening efficiency, and the ore can be crushed quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 The present invention provides a front view schematic diagram of the overall structure of the crushing box.

[0018] Figure 2 A front view schematic diagram of a crush box is provided for the present invention.

[0019] Figure 3 A cross-sectional view of a crush box is provided for the present invention.

[0020] Figure 4 A structural diagram of the crushing mechanism and screening assembly provided by the present invention.

[0021] Figure 5 The present invention provides a structural schematic diagram of a crushing roller.

[0022] Figure 6 A bottom view schematically showing a screen is provided for the present invention.

[0023] Figure 7 A cross-sectional view of a third bevel gear is provided for the present invention.

[0024] Figure 8 A schematic diagram of the surface structure of the second movable rod is provided for the present invention.

[0025] Fig. 9 An exploded view of the second movable rod and the first pulley is provided for the present invention.

[0026] Fig.10 For the present invention Fig. 9 A magnified view of the structure in the middle. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Reference Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 , which is the first embodiment of the present invention, a pulverizing mechanism 100 includes a pulverizing box 105, the inner wall of the pulverizing box 105 is rotatably mounted with two groups of pulverizing rollers 101, the front end of the pulverizing roller 101 is fixedly mounted with a first movable rod 102, the surface of the first movable rod 102 is fixedly mounted with a first gear 103, the front side of the inner wall of the pulverizing box 105 is rotatably mounted with a second movable rod 104, the surface of the second movable rod 104 is fixedly mounted with a second gear 106 meshing with the first gear 103, the surface of the second movable rod 104 is provided with a first pulley 104a, the interior of the first pulley 104a is fixedly mounted with a first bearing 104b, the interior of the first bearing 104b is fixedly mounted with the surface of the second movable rod 104, and the surface of the first bearing 104b is fixedly mounted with a A circular sleeve 104c is provided with a clamping groove 104d inside the circular sleeve 104c, slide plates 104e are fixedly installed on both sides of the surface of the second movable rod 104, an insert block 104f is slidably installed on the surface of the second movable rod 104, the insert block 104f and the slide plate 104e are slidably installed, the insert block 104f and the clamping groove 104d are plugged in, a motor 105a is fixedly installed on the bottom of the front side of the crushing box 105, a rotating rod 105b is fixedly installed on the output end of the motor 105a, a second pulley 105c is fixedly installed on the surface of the rotating rod 105b, a belt 105d is arranged inside the crushing box 105, the first pulley 104a and the second pulley 105c are installed through the belt 105d, and a second bearing 105e is fixedly installed on the back side of the circular sleeve 104c.

[0032] Specifically, the screening component 200 is located at the bottom of the crushing mechanism 100, and the screening component 200 includes a screen 201 and a guide plate 202. The bottom of the guide plate 202 is fixedly installed on the bottom of the inner wall of the crushing box 105. A knocking block 201a is arranged on the right side of the screen 201. A connecting rod 201b is rotatably installed inside the crushing box 105. A first bevel gear 201c is fixedly installed on the surface of the connecting rod 201b. A second bevel gear 201d meshing with the first bevel gear 201c is fixedly installed on the surface of the rotating rod 105b. The surface of the connecting rod 201b is fixedly installed on the knocking block 201a, and the back side of the knocking block 201a contacts the front side of the screen 201. Tension springs 201e are fixedly installed on the four corners of the top of the screen 201. A mounting block 201f is fixedly installed on the top of the tension spring 201e, and the outer side of the mounting block 201f is fixedly installed on the inner wall of the crushing box 105.

[0033] Furthermore, the ore to be crushed can be placed inside the crushing box 105, and the insert block 104f will be inserted into the circular sleeve 104c. At this time, the first pulley 104a can be rotated to drive the first movable rod 102 and the first gear 103 to rotate. The rotation of the first gear 103 drives the two sets of second gears 106 and the crushing roller 101 to rotate inward at the same time. Then, the ore can be placed inside the crushing box 105. Under the action of the two sets of crushing rollers 101, the ore can be crushed at this time. Since the second bevel gear 201d and the first bevel gear 201c are engaged with each other, the rotation of the rotating rod 105b will drive the connecting rod 201b to rotate. The rotation of the connecting rod 201b can drive the striking block 201a to hit the screen 201, so that the ore in the screen 201 can be screened. Finally, the screened ore will fall on the guide plate 202. Since the guide plate 202 is an inclined surface, the ore inside the crushing box 105 can be discharged, so that the ore can be crushed and screened.

[0034] Preferably, driven by the first motor 105a, the rotating rod 105b rotates to drive the first pulley 104a to rotate, the second pulley 105c rotates to drive the first pulley 104a to rotate through the belt 105d, the first pulley 104a rotates to drive the second movable rod 104, the circular sleeve 104c and the second gear 106 to rotate, the second gear 106 rotates to drive the first gear 103, the first movable rod 102 and the crushing roller 101 to rotate, when the two sets of crushing rollers 101 rotate inward at the same time, the ore can be crushed at this time, the rotating rod 105b rotates to also drive the second bevel gear 201d to rotate, the second bevel gear 201d rotates to drive the first bevel gear 201c to rotate, the first bevel gear 201c rotates to drive the striking block 201a to rotate, the striking block 201a rotates to hit the screen 201, the screen 201 will shake left and right inside the crushing box 105, so that the ore in the screen 201 can be screened.

[0035] Reference Figure 1 , Figure 3 , Figure 4 and Figure 6 , which is the second embodiment of the present invention, a speed regulating assembly 300, the speed regulating assembly 300 includes a connecting frame 301, a worm 302 is rotatably installed inside the connecting frame 301, a worm wheel 303 meshing with the worm 302 is fixedly installed on the surface of the second movable rod 104, and a support plate 304 is fixedly installed on the top of the guide plate 202.

[0036] A third bevel gear 302a is fixedly installed at the bottom of the worm gear 302, a circular groove 302ab is opened inside the third bevel gear 302a, a slide rod 302ac is slidably installed inside the circular groove 302ab, a tooth block 302ad is fixedly installed at one end of the slide rod 302ac, a first spring 302ae is sleeved on the surface of the slide rod 302ac, one side of the first spring 302ae is fixedly installed to one side of the inner wall of the circular groove 302ab, the other end of the first spring 302ae is fixedly installed to the other side of the inner wall of the circular groove 302ab, the third bevel gear 302a is meshed with the second bevel gear 201d, and the tooth block 302ad is meshed with the second bevel gear 201d.

[0037] A limit frame 302b is rotatably installed on the surface of the worm 302, and the limit frame 302b and the rotating rod 105b are slidably installed. A connecting groove 302c is opened at the bottom of the crushing box 105, and the limit frame 302b and the connecting groove 302c are slidably installed. A fixing rod 302d is fixedly installed on the back of the limit frame 302b, and a triangular block 302e is fixedly installed on the bottom of the screen 201. The bottom of the triangular block 302e contacts the surface of the fixing rod 302d, and a round block 302f is fixedly installed on the surface of the fixing rod 302d. A second spring 302g is sleeved on the surface of the fixing rod 302d, and the back of the second spring 302g is fixedly installed to the front end of the round block 302f, the front end of the first spring 302ae is fixedly installed to the back of the limit frame 302b, and the bottom of the fixing rod 302d contacts the top of the support plate 304.

[0038] The top and bottom of the front side of the connecting frame 301 are fixedly installed with a first tooth plate 301a, and the third gear 301b is rotatably installed on the right side of the inner wall of the crushing box 105. The first tooth plate 301a and the third gear 301b are meshed, and the surface of the third gear 301b is meshed with the second tooth plate 301c. The second tooth plate 301c is located on the outer side of the first tooth plate 301a, and a connecting plate 301d is fixedly installed on one side of the second tooth plate 301c. The back of the connecting plate 301d is inlaid with a ball 301e, and an annular groove 301f is provided on the front side of the second bearing 105e.

[0039] A disc 104g is fixedly mounted on the surface of the second movable rod 104, and spring pieces 104h are fixedly mounted on both sides of the front side of the disc 104g. The front end of the spring piece 104h is fixedly mounted on the back side of the insert block 104f.

[0040] Specifically, the motor 105a can be started to drive the second pulley 105c and the belt 105d for transmission. Under the action of the belt 105d, the first pulley 104a, the first bearing 104b, the circular sleeve 104c, the plug 104f and the second movable rod 104 are driven to rotate. The rotation of the second movable rod 104 drives the second gear 106 to rotate. The rotation of the second gear 106 drives the first gear 103 to rotate. The rotation of the first gear 103 drives the first movable rod 102 and the crushing roller 101 to rotate, so that the ore entering the crushing box 105 can be crushed. When there is too much ore inside the screen 201, the plug 104f will disengage from the clamping groove 104d. At this time, the second pulley 105c and the belt 105d can only drive the second pulley 105c and the circular sleeve 104c to rotate. At this time, the worm 302 will move forward and gradually mesh with the worm wheel 303, thereby reducing the crushing efficiency of the crushing roller 101.

[0041] It should be noted that when there is too much ore inside the screen 201, the screen 201 will move toward the bottom, and the movement of the screen 201 drives the triangular block 302e to move toward the bottom. Since the bottom of the triangular block 302e is an inclined surface, the fixed rod 302d will move forward, and the fixed rod 302d drives the limit frame 302b, the third bevel gear 302a, the worm 302 and the connecting frame 301 to move forward. When the limit frame 302b moves, it will slide on the surface of the connecting rod 201b. When the worm 302 and the limit frame 302b move forward, the worm 302 will gradually mesh with the worm wheel 303. When the worm 302 is about to mesh with the worm 302, the connecting frame 301 will drive the first tooth plate 301a to move forward. 01a moves forward and meshes with the third gear 301b. The third gear 301b rotates to drive the second tooth plate 301c, the connecting plate 301d and the ball 301e to move toward the back. When the ball 301e moves, it will contact the front side of the second bearing 105e. At this time, the second bearing 105e will drive the plug block 104f to move toward the back. When the plug block 104f moves toward the back, it will disengage from the clamping groove 104d. At this time, the second pulley 105c and the belt 105d can only drive the second pulley 105c and the round sleeve 104c to rotate. When the limit frame 302b moves forward, it will drive the worm 302 and the third bevel gear 302a to move forward. Since the material of the tooth block 302ad is rubber, and the first bevel gear 201c, the second bevel gear 201d and The third bevel gear 302a is made of high-hardness steel. When the second bevel gear 201d and the tooth block 302ad are in contact, the tooth block 302ad will gradually mesh with the second bevel gear 201d. When the tooth block 302ad and the second bevel gear 201d are meshed, the tooth block 302ad will compress the first spring 302ae, and the tooth block 302ad will move inward to drive the slide bar 302ac to enter the circular groove 302ab. At this time, the limit frame 302b continues to move forward, and the third bevel gear 302a will gradually rotate. When the tooth block 302ad and the third bevel gear 302a are on the same plane, the second bevel gear 201d will drive the third bevel gear 302a to rotate completely, and the third bevel gear 302a will drive the worm 302 to rotate. When the third bevel gear 302a is fully meshed with the second bevel gear 201d, the worm 302 will mesh with the worm wheel 303, thereby driving the worm wheel 303 to rotate, and the rotation of the worm wheel 303 drives the second movable rod 104 to rotate, and the rotation of the second movable rod 104 drives the second gear 106 to rotate, and the rotation of the second gear 106 drives the first gear 103 to rotate, and the rotation of the first gear 103 drives the crushing roller 101 to rotate, and the rotation of the crushing roller 101 will also crush the ore, so that the screening efficiency of the screen 201 remains unchanged, thereby reducing the crushing efficiency of the crushing roller 101, thereby preventing excessive accumulation of ore inside the screen 201. When there is not much ore in the screen 201, the fixed rod 302d will be subjected to the elastic force of the second spring 302g.The screen 201 will also be affected by the elastic force of the tension spring 201e, thereby also pulling the screen 201 to move toward the top. The movement of the screen 201 toward the top will drive the triangular block 302e and the fixing rod 302d to disengage. At this time, the fixing rod 302d pulls the limit frame 302b, the third bevel gear 302a, the worm 302 and the connecting frame 301 to move forward. The third bevel gear 302a will gradually disengage from the second bevel gear 201d. At this time, the worm 302 will also gradually disengage from the worm gear 303. The connecting frame 301 moves toward the back, driving the first tooth plate 301a to move toward the back. The first tooth plate 301a moves toward the back, driving the second tooth plate 301c, the connecting plate 301d and the ball 301e to move toward the front. Under the action of the spring piece 104h, the plug block 104f will be driven into the clamping groove 104d, thereby starting The motor 105a drives the second pulley 105c and the belt 105d to transmit. Under the action of the belt 105d, the first pulley 104a, the first bearing 104b, the round sleeve 104c, the plug 104f and the second movable rod 104 are driven to rotate. The rotation of the second movable rod 104 drives the second gear 106 to rotate. The rotation of the second gear 106 drives the first gear 103 to rotate. The rotation of the first gear 103 drives the first movable rod 102 and the crushing roller 101 to rotate, so that the ore entering the crushing box 105 can be crushed. The crushed ore will enter the screen 201. At this time, the working efficiency of the ore in the screen 201 and the crushing roller 101 can remain unchanged, thereby satisfying the screen 201 can be based on the weight of the ore inside itself, thereby reducing the rotation efficiency of the crushing roller 101.

[0042] The remaining structures are the same as those of Example 1.

[0043] Reference Figures 1 to 10 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: this embodiment provides a method for screening ore in coal mining. Through this embodiment, the crushing speed of the crushing roller 101 can be controlled, and when too much ore is accumulated inside the screen 201, the crushing efficiency of the crushing roller 101 needs to be adjusted by the speed regulating component 300, so as to prevent too much ore from accumulating inside the screen 201, resulting in part of the ore being unable to be screened.

[0044] The ore is placed inside the crushing box 105, and then the motor 105a can be started to drive the second movable rod 104 to rotate through the second pulley 105c, the first pulley 104a and the belt 105d. The second movable rod 104 rotates through the second tooth block 302ad and the first gear 103 to drive the first movable rod 102 and the crushing roller 101 to rotate, so that the ore can be screened. When there is too much ore inside the screen 201, the plug block 104f and the clamping groove 104d can be disengaged. At this time, the worm 302 will engage with the worm wheel 303. At this time, the circular sleeve 104c has no way to drive the second movable rod 104 to rotate, so that the worm wheel 303 will drive the second movable rod 104 to rotate, so that the speed of the crushing roller 101 can be slowed down, thereby reducing the efficiency of crushing the ore.

[0045] In summary: the ore to be crushed can be crushed by the crushing roller 101, and then the crushed ore enters the screen 201. Finally, when there is too much ore inside the screen 201, the speed of the crushing roller 101 will be reduced under the action of the speed regulating component 300, and the crushing roller 101 will continue to rotate to crush it. Finally, the speed of the crushing roller 101 can be reduced, but the screen 201 will continue to screen the ore. When the ore is screened to a certain weight, the worm 302 will be separated from the worm wheel 303, and the crushing roller 101 will resume its previous speed, so that the ore crushing efficiency can be fast.

[0046] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as temperature, pressure, etc., mounting arrangements, use of materials, color, directional changes, etc., without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims. In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described, that is, those features that are not relevant to the best mode currently considered to carry out the invention, or those features that are not relevant to implementing the invention.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A coal mining ore screening device, characterized in that: A pulverizing mechanism (100) comprises a pulverizing box (105), two groups of pulverizing rollers (101) are rotatably mounted on the inner wall of the pulverizing box (105), a first movable rod (102) is fixedly mounted on the front end of the pulverizing roller (101), a first gear (103) is fixedly mounted on the surface of the first movable rod (102), a second movable rod (104) is rotatably mounted on the front side of the inner wall of the pulverizing box (105), a second gear (106) meshing with the first gear (103) is fixedly mounted on the surface of the second movable rod (104); a screening component (200), the screening component (200) being located at the bottom of the pulverizing mechanism (100), the screening component (200) comprising a screen (201) and a guide plate (202), the bottom of the guide plate (202) being fixedly mounted to the bottom of the inner wall of the pulverizing box (105); A speed regulating assembly (300) comprising a connecting frame (301), a worm (302) being rotatably mounted inside the connecting frame (301), a worm wheel (303) meshing with the worm (302) being fixedly mounted on the surface of the second movable rod (104), and a support plate (304) being fixedly mounted on the top of the guide plate (202).

2. The coal mining ore screening device according to claim 1, characterized in that: The surface of the second movable rod (104) is provided with a first pulley (104a), the interior of the first pulley (104a) is fixedly installed with a first bearing (104b), the interior of the first bearing (104b) is fixedly installed with the surface of the second movable rod (104), a round sleeve (104c) is fixedly installed on the surface of the first bearing (104b), a clamping groove (104d) is provided inside the round sleeve (104c), both sides of the surface of the second movable rod (104) are fixedly installed with sliding plates (104e), the surface of the second movable rod (104) is slidably installed with an insert block (104f), the insert block (104 f) and a slide plate (104e) are slidably installed, the plug block (104f) and the clamping groove (104d) are plugged, a motor (105a) is fixedly installed at the bottom of the front side of the crushing box (105), a rotating rod (105b) is fixedly installed at the output end of the motor (105a), a second pulley (105c) is fixedly installed on the surface of the rotating rod (105b), a belt (105d) is arranged inside the crushing box (105), the first pulley (104a) and the second pulley (105c) are installed through the belt (105d), and a second bearing (105e) is fixedly installed on the back of the round sleeve (104c).

3. The coal mining ore screening device according to claim 2, characterized in that: A striking block (201a) is arranged on the right side of the screen (201), a connecting rod (201b) is rotatably mounted inside the crushing box (105), a first bevel gear (201c) is fixedly mounted on the surface of the connecting rod (201b), a second bevel gear (201d) meshing with the first bevel gear (201c) is fixedly mounted on the surface of the rotating rod (105b), the surface of the connecting rod (201b) is fixedly mounted on the striking block (201a), the back side of the striking block (201a) contacts the front side of the screen (201), tension springs (201e) are fixedly mounted on the four corners of the top of the screen (201), a mounting block (201f) is fixedly mounted on the top of the tension spring (201e), and the outer side of the mounting block (201f) is fixedly mounted on the inner wall of the crushing box (105).

4. The coal mining ore screening device according to claim 3 is characterized in that: A third bevel gear (302a) is fixedly installed at the bottom of the worm (302), a circular groove (302ab) is opened inside the third bevel gear (302a), a slide rod (302ac) is slidably installed inside the circular groove (302ab), a tooth block (302ad) is fixedly installed at one end of the slide rod (302ac), a first spring (302ae) is sleeved on the surface of the slide rod (302ac), one side of the first spring (302ae) is fixedly installed on one side of the inner wall of the circular groove (302ab), and the other end of the first spring (302ae) is fixedly installed on the other side of the inner wall of the circular groove (302ab), the third bevel gear (302a) is meshed with the second bevel gear (201d), and the tooth block (302ad) is meshed with the second bevel gear (201d).

5. The coal mining ore screening device according to claim 4, characterized in that: A limit frame (302b) is rotatably mounted on the surface of the worm (302), the limit frame (302b) and the rotating rod (105b) are slidably mounted, a connecting groove (302c) is provided at the bottom of the crushing box (105), the limit frame (302b) and the connecting groove (302c) are slidably mounted, a fixing rod (302d) is fixedly mounted on the back of the limit frame (302b), and a triangular block (302e) is fixedly mounted on the bottom of the screen (201), the triangular block (302e ) is in contact with the surface of a fixing rod (302d), a round block (302f) is fixedly mounted on the surface of the fixing rod (302d), a second spring (302g) is sleeved on the surface of the fixing rod (302d), the back side of the second spring (302g) is fixedly mounted on the front side of the round block (302f), the front side of the first spring (302ae) is fixedly mounted on the back side of the limiting frame (302b), and the bottom of the fixing rod (302d) is in contact with the top of the support plate (304).

6. The coal mining ore screening device according to claim 2, characterized in that: A first tooth plate (301a) is fixedly mounted on the top and bottom of the front face of the connection frame (301); a third gear (301b) is rotatably mounted on the right side of the inner wall of the crushing box (105); the first tooth plate (301a) and the third gear (301b) are meshed; the surface of the third gear (301b) is meshed with the second tooth plate (301c); the second tooth plate (301c) is located outside the first tooth plate (301a); a connection plate (301d) is fixedly mounted on one side of the second tooth plate (301c); a ball (301e) is inlaid on the back of the connection plate (301d); and an annular groove (301f) is provided on the front side of the second bearing (105e).

7. The coal mining ore screening device according to claim 1, characterized in that: A disc (104g) is fixedly mounted on the surface of the second movable rod (104), spring pieces (104h) are fixedly mounted on both sides of the front side of the disc (104g), and the front end of the spring piece (104h) is fixedly mounted on the back side of the insert block (104f).

8. A method for screening coal mining ore, characterized in that: The method for screening coal mining ore according to any one of claims 1 to 7 comprises: First, the ore can be crushed by a crushing mechanism (100). The screening assembly (200) is used to screen the ore that has been crushed inside the crushing box (105). Finally, under the action of the speed regulating component (300), when there is too much ore inside the screen (201), the rotation speed of the crushing roller (101) will be slowed down.

9. The method for screening coal mining ore according to claim 8, characterized in that: By providing a crushing roller (101), the ore entering the crushing box (105) can be crushed, and the crushed ore inside the screen (201) can be screened by the striking block (201a). The screened ore is discharged to the outside of the crushing box (105) under the action of the guide plate (202). By providing a worm gear (303) and a worm (302), the rotation speed of the two sets of crushing rollers (101) can be reduced, thereby preventing too much crushed ore inside the screen (201).

10. The method for screening coal mining ore according to claim 9, characterized in that: By providing the speed regulating assembly (300), when too much ore is accumulated inside the screen (201), the rotation speeds of the two sets of crushing rollers (101) can be adjusted under the action of the worm wheel and the worm (302), thereby reducing the crushing efficiency of the crushing rollers (101), while the screening efficiency of the screen (201) will not change.

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