Coal gangue recycling device

Abstract

The application belongs to the technical field of gangue recycling equipment, and discloses a coal gangue recycling device, which comprises an equipment base, the upper end of the equipment base is elastically connected with a screening frame, further comprises: a sieve plate transverse movement adjusting assembly arranged in the screening frame, the sieve plate transverse movement adjusting assembly comprises three sieve plate mounting frames arranged in the screening frame, through the cooperation of the structures of the grading sieve plate and the grading sieve hole, combined with the translatable adjusting function of the sieve plate mounting frame, compared with the existing non-adjustable screening structure, the grading sieve hole on the grading sieve plate can realize flexible adjustment of the aperture combination through the translation of the sieve plate mounting frame, adapt to the gangue particle size difference of different coal seams and different mining stages, without disassembling and replacing the sieve plate, the gradient grading screening of different precision can be realized, and the problems of poor adaptability of the existing non-adjustable screening structure, the inability to cope with the variable gangue particle size and the insufficient grading flexibility are effectively solved.

Description

Technical Field

[0001] This invention belongs to the technical field of gangue recycling equipment, specifically a coal gangue recycling device. Background Technology

[0002] During coal mining operations, a large amount of mixture of coal and gangue is generated. To achieve effective resource recovery and rational utilization, improve resource utilization efficiency, and reduce waste emissions, the mined mixture is usually graded and screened to separate useful raw coal from useless gangue. Therefore, equipment specifically designed for the recovery and comprehensive utilization of gangue during coal mining has been widely used and promoted in the industry.

[0003] For example, a gangue screening device with publication number CN206168745U includes a screening plate, which is a rectangular ring in shape. One end of the screening plate is fixed to a base plate, and the other end is fixed to a support member. The support member is vertically fixed to the base plate and is also supported by an inclined support member fixed to the base plate. Several screen bars are uniformly fixed inside the screening plate, and the screen bars are supported by several support plates fixed to the base plate. The gangue particles selected by this invention meet the requirements for reasonable control of bed pressure, satisfy the production needs of the boiler, increase the amount of coal slime used, and achieve the purpose of saving costs, reducing consumption, increasing efficiency, and increasing benefits.

[0004] While the above solutions can achieve the goals of cost reduction, efficiency improvement, and increased benefits, the screening structures in existing coal mine gangue recovery devices are mostly fixed and non-adjustable. Their grading screens and screen holes are fixed and cannot be flexibly adjusted according to actual mining conditions. Since the gangue particle size varies greatly between different coal seams and different mining stages, the fixed and non-adjustable screening structure is difficult to adapt to the changing gangue particle size requirements, resulting in low grading and screening accuracy, which in turn affects the resource recovery rate. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a coal gangue recycling device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a coal gangue recycling device, comprising a base, wherein a screening frame is elastically connected to the upper end of the base, and further comprising:

[0007] A screen plate transverse movement adjustment assembly is installed inside the screening machine frame. The screen plate transverse movement adjustment assembly includes three screen plate mounting frames installed inside the screening machine frame. Each screen plate mounting frame includes three grading screen plates. A plurality of grading screen holes are opened on the plurality of grading screen plates. A side guide slide is opened inside the screening machine frame.

[0008] A guide and limiting assembly is installed inside the screening machine frame. The guide and limiting assembly includes multiple U-shaped guide grooves formed on the inner wall of the side guide slide. Side-opening guide slide rods are symmetrically fixedly connected to both sides of the lower end of the screen plate mounting frame.

[0009] A locking and fastening assembly is installed at the locking part of the screening machine frame and the screen plate transverse adjustment assembly. The locking and fastening assembly includes multiple positioning and mounting holes formed on the screen plate mounting frame, the U-shaped guide groove, and the side-opening guide slide rod. The multiple vertically aligned positioning and mounting holes form a mounting channel. A locking threaded rod is threaded into the mounting channel, and an anti-loosening lock nut is threaded into the outer side of the locking threaded rod, thereby realizing the locking and fixing of the screen plate mounting frame, the guide limit assembly, and the screening machine frame.

[0010] Preferably, the guide limiting component further includes a positioning support frame fixedly connected in the screening machine frame, and the positioning mounting hole is also opened in the positioning support frame, and the plurality of screen plate mounting frames are adjusted by translation along the outer side of the corresponding positioning support frame.

[0011] Preferably, the plurality of the screen plate mounting frames are adjusted to move horizontally within the side guide slide, and manual adjustment handles are symmetrically fixedly connected to both sides of the horizontal end of the screen plate mounting frames.

[0012] Preferably, the sieve plate mounting frame and the side guide slide are slidably connected by a side-opening guide slide rod and a U-shaped guide groove.

[0013] Preferably, a feed guide plate is fixedly connected to the feed end of the screening machine frame, and multiple grading and distributing guide plates are fixedly connected to the end of the feed guide plate near the screening machine frame. The multiple grading and distributing guide plates are arranged horizontally at equal intervals, and the length and inclination angle of the multiple grading and distributing guide plates are different, so as to evenly distribute the feed to the screen surface corresponding to the three screen plate mounting frames.

[0014] Preferably, the end of the screening frame away from the feed guide plate and the lower end of the equipment base are respectively fixedly connected to the discharge guide plate for discharging the graded materials.

[0015] Preferably, a pair of translational limiting plates are symmetrically fixedly connected to both sides of the horizontal end of the screen plate mounting frame. The height of the translational limiting plates is higher than the height of the side guide slide, which is used to limit the translational stroke of the screen plate mounting frame and prevent excessive translation from damaging the components.

[0016] Preferably, two alignment mark blocks are fixedly connected to the outside of the positioning support frame. The positions of the two alignment mark blocks are perpendicularly aligned with each other when the screen plate mounting frame is in the center alignment state, which helps the operator to quickly achieve the center positioning of the screen plate.

[0017] Preferably, the plurality of screen plate mounting frames are arranged horizontally side by side along the feeding direction to the discharging direction of the screening machine frame, and the three grading screen plates in each screen plate mounting frame are arranged horizontally spliced ​​along the width direction of the screen plate mounting frame.

[0018] Preferably, all of the grading sieve holes are circular through holes, the grading sieve holes on the same grading sieve plate are evenly arranged in a matrix, and the diameter of the grading sieve holes on the three grading sieve plates decreases sequentially.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention, through the structural coordination of a grading screen plate and grading screen holes, combined with the adjustable translation function of the screen plate mounting frame, achieves flexible adjustment of the grading screen hole combination by moving the screen plate mounting frame, compared to existing non-adjustable screening structures. This adapts to the differences in gangue particle size in different coal seams and mining stages, and can achieve gradient grading screening of different precisions without disassembling and replacing the screen plate. It effectively solves the problems of poor adaptability, inability to cope with varying gangue particle sizes, and insufficient grading flexibility of existing non-adjustable screening structures. It can not only achieve effective separation of gangue and raw coal, but also improve the versatility and practicality of the device, further improving the resource utilization rate of gangue recovery.

[0021] This invention achieves precise guidance and stable operation of components during movement by setting a side-opening guide slide rod and a U-shaped guide slide groove. At the same time, the positioning support frame not only provides reliable support, but also effectively assists in limiting the position and prevents the components from deviating during operation.

[0022] This invention can strictly control the translation stroke of related components by setting a translation limit plate, effectively avoiding damage to mechanical parts caused by excessive translation. With the help of clearly visible alignment mark blocks, centering can be achieved quickly and accurately, thereby improving the assembly efficiency and ease of operation of the entire device.

[0023] This invention, through the structural coordination of a feed guide plate, a grading and distributing guide plate, a grading screen plate, and a discharge guide plate, allows the gangue mixture to be conveyed by the feed guide plate. The grading and distributing guide plates, by means of their equidistant arrangement and differences in length and inclination angle, evenly distribute the material to each screen surface, avoiding local overload and wear of the screen surface and effectively extending the service life of the grading screen plate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the device base of the present invention;

[0025] Figure 2 This is a bottom view of the base structure of the device of the present invention;

[0026] Figure 3This is a schematic diagram of the adjustment state structure of the sieve plate transverse movement adjustment component of the present invention;

[0027] Figure 4 This is a bottom view of the sieve plate transverse movement adjustment assembly of the present invention;

[0028] Figure 5 This is a front view schematic diagram of the positioning support frame of the present invention;

[0029] Figure 6 This is a partially truncated enlarged structural diagram of the locking position of the device base of the present invention;

[0030] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the partial truncation at point A in the middle.

[0031] In the diagram: 1. Equipment base; 2. Screening machine frame; 3. Screen plate transverse movement adjustment assembly; 300. Screen plate mounting frame; 301. Grading screen plate; 302. Grading screen holes; 303. Side guide slide; 304. Manual adjustment handle; 4. Guide limit assembly; 400. U-shaped guide slide; 401. Side opening guide slide rod; 402. Positioning support frame; 5. Locking fastening assembly; 500. Positioning mounting hole; 501. Locking threaded rod; 502. Anti-loosening lock nut; 6. Feed guide plate; 7. Grading and distributing guide plate; 8. Discharge guide plate; 9. Horizontal movement limit plate; 10. Alignment mark block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 7As shown, this invention provides a coal gangue recycling device, including a base 1. A screening frame 2 is elastically connected to the upper end of the base 1. When the device is in operation, the operator starts a three-phase asynchronous motor mounted on one side of the base 1. This motor serves as the power source for the overall operation of the device. The motor output is connected to the vibration mechanism of the screening frame 2 via a coupling. The operator can adjust the motor speed according to the gangue particle size and screening requirements, thereby controlling the vibration frequency of the screening frame 2 to ensure the efficiency and accuracy of the grading screening. It should be noted that a three-phase asynchronous motor is used here. Those skilled in the art can choose a specific model according to their needs. The motor is just a conventional power component, and any mature three-phase asynchronous motor on the market can be used. At the same time, the connection method between the motor, the coupling, and the vibration mechanism is a conventional connection in the mechanical field. Those skilled in the art can flexibly choose according to the actual installation space. The device also includes a screen plate transverse adjustment assembly 3, which is installed on the screening frame. Within the screening frame 2, the screen plate transverse adjustment assembly 3 includes three screen plate mounting frames 300 disposed within the screening frame 2. Each screen plate mounting frame 300 includes three grading screen plates 301. Several grading screen holes 302 are provided on the multiple grading screen plates 301. A side guide slide 303 is provided within the screening frame 2. The multiple screen plate mounting frames 300 are adjusted horizontally within the side guide slide 303. Manual adjustment handles 304 are symmetrically fixedly connected to both sides of the horizontal end of the screen plate mounting frames 300. The multiple screen plate mounting frames 300 are arranged horizontally side by side along the feeding direction to the discharging direction of the screening frame 2. The three grading screen plates 301 within each screen plate mounting frame 300 are all arranged laterally along the width direction of the screen plate mounting frame 300. The multiple grading screen holes 302 are all circular through holes. The grading screen holes 302 on the same grading screen plate 301 are arranged in a matrix and uniformly, and the diameter of the grading screen holes 302 on the three grading screen plates 301 decreases sequentially.

[0034] The above solution achieves flexible horizontal movement and diverse screening combinations of the screen plate through the overall design of the screen plate transverse adjustment component 3. This solves the technical problem of fixed screen plates in existing screening devices that cannot adapt to screening materials of different particle sizes. Furthermore, the splicing joints of the grading screen plate 301 adopt a tight fit design with the gap controlled to a negligible range. The edges of the grading screen holes 302 are all chamfered. This is not separately marked in the figure but is a routine process supplement. It can effectively prevent gangue from getting stuck at the splicing joints and the edges of the grading screen holes 302, ensuring smooth screening.

[0035] like Figures 1 to 7As shown, the guide limiting component 4 is installed inside the screening frame 2. The guide limiting component 4 includes multiple U-shaped guide grooves 400 formed on the lower inner wall of the side guide slide 303. The lower ends of the screen plate mounting frame 300 are symmetrically fixedly connected to the two sides of the side opening guide slide rods 401. The screen plate mounting frame 300 and the side guide slide 303 are slidably guided and connected through the side opening guide slide rods 401 and the U-shaped guide grooves 400. The guide limiting component 4 also includes a positioning support frame 402 fixedly connected inside the screening frame 2. The positioning support frame 402 is a horizontally flat square with a notch in the center of the top and is fixedly connected to the side end of the screening frame 2. Multiple screen plate mounting frames 300 can be adjusted by translation along the outer side of the corresponding positioning support frame 402. The U-shaped guide grooves 400 and the side opening guide slide rods 401 in the guide limiting component 4 are both made of wear-resistant material. The specific material can be selected according to the actual working conditions, and those skilled in the art can flexibly adapt it.

[0036] By adopting the above scheme, the precise guidance and positioning of the screen plate mounting frame 300 is achieved through the coordinated cooperation of the various components of the guide and limiting assembly 4. The cooperation between the U-shaped guide groove 400 and the side-opening guide rod 401 ensures the accuracy of the translation trajectory. The auxiliary positioning and supporting role of the positioning support frame 402 further improves the translation stability and structural strength of the screen plate mounting frame 300.

[0037] like Figures 3 to 7 As shown, the locking fastening assembly 5 is installed at the locking part of the screening frame 2 and the screen plate transverse adjustment assembly 3. The locking fastening assembly 5 includes multiple positioning mounting holes 500 on the screen plate mounting frame 300, the U-shaped guide slide 400, the side-opening guide slide rod 401, and the positioning support frame 402. The multiple vertically aligned positioning mounting holes 500 form an installation channel. The positioning mounting holes 500 are evenly distributed along the length direction of the screen plate mounting frame 300, the U-shaped guide slide 400, and other components. The number can be flexibly set according to the actual adjustment stroke to ensure that when the screen plate mounting frame 300 is moved to different preset positions, the corresponding positioning mounting hole 500 can be found to achieve locking. The installation channel is internally threaded with a locking thread rod 501, and the externally threaded with a locking nut 502, thereby achieving locking and fixing of the screen plate mounting frame 300 with the guide limit assembly 4 and the screening frame 2.

[0038] The above solution is adopted: the locking fastening component 5 adopts a high-strength thread structure, and the anti-loosening locking nut 502 adopts an anti-loosening structure design with excellent tensile strength and shear resistance, which can withstand the tensile and shear forces generated by the vibration of the device, thus realizing the firm locking of the screen plate mounting frame 300.

[0039] like Figures 1 to 2As shown, a feed guide plate 6 is fixedly connected to the feed end of the screening frame 2. Multiple grading and distributing guide plates 7 are fixedly connected to the end of the feed guide plate 6 near the screening frame 2. The multiple grading and distributing guide plates 7 are arranged horizontally at equal intervals, and the length and inclination angle of the multiple grading and distributing guide plates 7 are different, so as to evenly distribute the feed to the screen surface corresponding to the three screen plate mounting frames 300. The end of the screening frame 2 away from the feed guide plate 6 and the lower end of the equipment base 1 are respectively fixedly connected to the discharge guide plate 8 for discharging the graded materials.

[0040] By adopting the above solution, the technical problems of uneven feeding and excessive wear of local screen surfaces in the existing device are effectively solved through the cooperation of the feed guide plate 6 and the grading and distributing guide plate 7. The uniform distribution of materials is achieved, which provides a guarantee for accurate screening. At the same time, the service life of the grading screen plate 301 is extended and the maintenance cost of the device is reduced.

[0041] like Figures 1 to 7 As shown, a pair of translation limit plates 9 are symmetrically fixedly connected to both sides of the horizontal end of the screen plate mounting frame 300. The height of the translation limit plates 9 is higher than the height of the side guide slide 303, which is used to limit the translation stroke of the screen plate mounting frame 300 and prevent excessive translation from damaging the components. Two alignment mark blocks 10 are fixedly connected to the outside of the positioning support frame 402. The positions of the two alignment mark blocks 10 are perpendicularly aligned with each other when the screen plate mounting frame 300 is in the center alignment state, which is used to assist the operator to quickly achieve the center positioning of the screen plate.

[0042] The above solution allows operators to quickly determine whether the screen plate mounting frame 300 is centered through visual observation, without the need for additional measuring tools. This makes the operation convenient and ensures the accuracy of the centering position, thus guaranteeing subsequent locking operations and screening precision.

[0043] Working principle and usage process of this invention:

[0044] Before starting the device, the operator manually adjusts the handle 304 to push the three screen plate mounting frames 300, allowing the screen plate mounting frames 300 to move and adjust along the side guide slide 303. At the same time, the side-opening guide slide rods 401 on both sides of the lower end of the screen plate mounting frames 300 slide along the U-shaped guide slide 400. The positioning support frame 402 provides auxiliary limit to the translation direction of the screen plate mounting frames 300, ensuring that the screen plate mounting frames 300 do not deviate during the translation process. The translation limit plate 9 can limit the maximum translation stroke of the screen plate mounting frames 300, preventing excessive translation from damaging the guide limit component 4 or the screen plate transverse adjustment component 3. When the screen plate mounting frames 300 move to the preset screening position, the operator observes the alignment mark block 10 and aligns the screen plate mounting frames 300 vertically with the alignment mark block 10, achieving rapid centering and positioning of the screen plate mounting frames 300 and improving adjustment efficiency.

[0045] After the screen plate mounting frame 300 is positioned, the locking threaded rod 501 is screwed into the vertically aligned mounting channel formed by the screen plate mounting frame 300, the U-shaped guide slide 400, the side-opening guide slide rod 401, and the positioning support frame 402. Then, the anti-loosening locking nut 502 is threaded onto the outside of the locking threaded rod 501 and tightened. The screen plate mounting frame 300 is securely locked to the guide limit component 4 and the screening frame 2 through the locking fastening component 5, which prevents the screen plate mounting frame 300 from shifting due to vibration during the operation of the device and ensures screening accuracy.

[0046] When the device is in operation, the coal gangue mixture is conveyed to the feed end of the screening frame 2 via the feed guide plate 6. Multiple grading and distributing guide plates 7 on the feed guide plate 6 are equidistantly arranged in the horizontal direction, and the length and inclination angle of each grading and distributing guide plate 7 are different. This can evenly distribute the centrally conveyed gangue mixture to the screen surfaces corresponding to the three screen plate mounting frames 300, avoid local screen surface overload, and reduce local wear of the grading screen plates 301. The diverted gangue mixture falls onto the grading screen plates 301, which can perform gradient grading and screening of gangue mixtures of different particle sizes, and achieve effective separation of gangue and raw coal. After grading and screening, materials of different particle sizes fall through the grading screen holes 302 of the corresponding grading screen plates 301, and are finally discharged through the discharge guide plate 8 at the end of the screening frame 2 away from the feed guide plate 6 and the lower end of the equipment base 1, completing the grading and discharge operation of gangue recovery.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal gangue recycling device, comprising a base (1), wherein a screening frame (2) is elastically connected to the upper end of the base (1), characterized in that: Also includes: A screen plate transverse movement adjustment assembly (3) is installed inside the screening machine frame (2). The screen plate transverse movement adjustment assembly (3) includes three screen plate mounting frames (300) installed inside the screening machine frame (2). The screen plate mounting frames (300) include three grading screen plates (301). A plurality of grading screen holes (302) are opened on the plurality of grading screen plates (301). A side guide slide (303) is opened inside the screening machine frame (2). The guide limiting component (4) is installed inside the screening frame (2). The guide limiting component (4) includes multiple U-shaped guide grooves (400) opened on the inner wall of the side guide slide (303). The lower end of the screen plate mounting frame (300) is symmetrically fixedly connected with side-opening guide slide rods (401). The locking fastening assembly (5) is installed at the locking part of the screening frame (2) and the screen plate transverse adjustment assembly (3). The locking fastening assembly (5) includes multiple positioning mounting holes (500) on the screen plate mounting frame (300), the U-shaped guide slide groove (400), and the side-opening guide slide rod (401). The multiple vertically aligned positioning mounting holes (500) form a mounting channel. The mounting channel is internally threaded with a locking thread rod (501), and the locking thread rod (501) is externally threaded with an anti-loosening locking nut (502), thereby realizing the locking and fixing of the screen plate mounting frame (300) with the guide limit assembly (4) and the screening frame (2).

2. The coal gangue recycling device according to claim 1, characterized in that, The guide limiting component (4) also includes a positioning support frame (402) fixedly connected in the screening frame (2), and the positioning mounting hole (500) is also opened in the positioning support frame (402). The multiple screen plate mounting frames (300) are adjusted by translation along the outside of the corresponding positioning support frame (402).

3. The coal gangue recycling device according to claim 1, characterized in that: Multiple screen plate mounting frames (300) are translatably adjusted within the side guide slide (303), and manual adjustment handles (304) are symmetrically fixedly connected to both sides of the horizontal end of the screen plate mounting frame (300).

4. The coal gangue recycling device according to claim 1, characterized in that: The sieve plate mounting frame (300) and the side guide slide (303) are slidably connected by a side-opening guide slide rod (401) and a U-shaped guide groove (400).

5. The coal gangue recycling device according to claim 1, characterized in that: The feeding end of the screening frame (2) is fixedly connected to a feeding guide plate (6). The feeding guide plate (6) is fixedly connected to a plurality of grading and distributing guide plates (7) at one end near the screening frame (2). The plurality of grading and distributing guide plates (7) are arranged horizontally at equal intervals, and the length and inclination angle of the plurality of grading and distributing guide plates (7) are different, so that the feed is evenly distributed to the screen surface corresponding to the three screen plate mounting frames (300).

6. The coal gangue recycling device according to claim 1, characterized in that: The end of the screening frame (2) away from the feed guide plate (6) and the lower end of the equipment base (1) are respectively fixedly connected to the discharge guide plate (8) for the discharge of graded materials.

7. The coal gangue recycling device according to claim 1, characterized in that: A pair of translation limit plates (9) are symmetrically fixedly connected to both sides of the horizontal end of the screen plate mounting frame (300). The height of the translation limit plates (9) is higher than the height of the side guide slide (303), which is used to limit the translation stroke of the screen plate mounting frame (300) and prevent excessive translation from damaging the components.

8. The coal gangue recycling device according to claim 2, characterized in that: Two alignment mark blocks (10) are fixedly connected to the outside of the positioning support frame (402). When the two alignment mark blocks (10) are in the center alignment state with the sieve plate mounting frame (300), they are perpendicularly aligned with each other to assist the operator in quickly achieving the center positioning of the sieve plate.

9. The coal gangue recycling device according to claim 1, characterized in that: Multiple screen plate mounting frames (300) are arranged horizontally in parallel along the feeding direction to the discharge direction of the screening machine frame (2). The three grading screen plates (301) in each screen plate mounting frame (300) are arranged horizontally along the width direction of the screen plate mounting frame (300).

10. The coal gangue recycling device according to claim 1, characterized in that: The multiple grading sieve holes (302) are all circular through holes. The grading sieve holes (302) on the same grading sieve plate (301) are arranged in a matrix and uniformly. The hole diameters of the grading sieve holes (302) on the three grading sieve plates (301) decrease sequentially.

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