Energy-saving and environment-friendly flip-flow screen for coal mine production

Abstract

The invention relates to the technical field of flip-flow screens, and provides an energy-saving and environment-friendly flip-flow screen for coal mine production. The shearing springs are installed on the front side and the rear side of the top of the fixed screen frame correspondingly, and the multiple shearing springs on the front side and the rear side are transversely arranged at equal intervals. The front side and the rear side of the bottom of the floating screen frame are connected with the tops of the shearing springs, the multiple shaking connecting plates are arranged at equal intervals, and the shaking connecting plates are rotationally installed on the lower side of the interior of the floating screen frame; the partition top connecting plates are arranged between every two adjacent shaking connecting plates, and the partition top connecting plates are fixedly mounted on the lower side of the interior of the floating screen frame; and the multiple middle screen meshes are installed between the adjacent shaking connecting plates and the adjacent top separating connecting plates. When the coal screening device is used, through cooperation of external eccentric shaft type vibration and internal ultrasonic waves, efficient screening of coal is achieved, energy consumption of an external driving device is reduced, and the energy-saving requirement of modern industrial production is met.

Description

Technical Field

[0001] The invention relates to the technical field of loose-leaf screens, and more specifically to an energy-saving and environment-friendly loose-leaf screen for coal mine production. Background Art

[0002] In the coal mining production process, screening equipment is an indispensable and important tool. As a highly efficient screening equipment, the eccentric shaft relaxation screen is mainly composed of a fixed screen frame, a floating screen frame, a screen mesh and an eccentric shaft mechanism. The eccentric shaft mechanism is used to drive the floating screen frame to vibrate, while also driving the internal screen surface of the floating screen frame to perform alternating tensioning and relaxation movements, causing the material to bounce on the screen surface, thereby achieving efficient screening of coal mines.

[0003] The existing eccentric shaft type relaxation screen basically only relies on the eccentric shaft mechanism to provide vibration screening kinetic energy for the floating screen frame and screen mesh during the coal mine screening process. However, this method is highly dependent on the kinetic energy provided by the eccentric shaft mechanism. For the screening of fine coal, a larger amplitude of vibration is required, which easily leads to high overall energy consumption. More importantly, during the vibration process of the relaxation screen, the vibration energy generated is not effectively utilized, but directly dissipated, further exacerbating the waste of energy. Therefore, there is room for energy-saving optimization to reduce energy consumption and improve energy utilization efficiency.

[0004] To this end, the present application proposes an energy-saving and environmentally friendly relaxation screen for coal mine production to solve the above problems. Summary of the invention

[0005] Technical problem to be solved: In view of the problems existing in the prior art, the purpose of the present invention is to provide an energy-saving and environmentally friendly loose-fitting screen for coal mine production, which solves the problems of high energy consumption and energy waste in the existing loose-fitting screen during the coal mine screening process.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an energy-saving and environmentally friendly relaxation screen for coal mine production, comprising: a fixed screen frame, arranged parallel to the ground; shear springs, respectively installed on the front and rear sides of the top of the fixed screen frame, and multiple shear springs on the front and rear sides are arranged horizontally and equidistantly; a floating screen frame, the front and rear sides of the bottom are connected to the top of the shear springs, multiple shaking connecting plates are arranged equidistantly, and the shaking connecting plates are rotatably installed on the lower side of the inner part of the floating screen frame; a partition top connecting plate, arranged between two adjacent shaking connecting plates, and the partition top connecting plates are fixedly installed on the floating screen frame. The lower inner side; there are multiple middle screens, which are installed between adjacent shaking connecting plates and partition top connecting plates; the tops of the shaking connecting plates and partition top connecting plates are equidistantly provided with multiple plate grooves, the inside of the partition top connecting plate is provided with a waveguide rod, and the top of the waveguide rod is equidistantly provided with multiple branch guide rods, one end of the branch guide rod passes through the bottom wall of the plate groove and extends to the inside of the plate groove; a mounting frame is installed on the left side of the fixed screen frame; an ultrasonic component is installed on the rear side of the fixed screen frame, for generating and transmitting ultrasonic waves; a vibration borrowing component is installed on the front side of the fixed screen frame, for borrowing the vibration energy of the floating screen frame.

[0007] In a new embodiment, a plurality of mesh disk blocks are equidistantly fixedly connected to the front and rear sides of the middle screen, the front mesh disk blocks and the rear mesh disk blocks are alternately distributed, and an overlapping opening is provided between two adjacent mesh disk blocks, and the overlapping opening is opened on the front and rear sides of the middle screen.

[0008] In a new embodiment, a plug hole is provided at the bottom end of each of the network disk blocks, and the diameter of the plug hole is consistent with the diameter of the waveguide rod.

[0009] In a new embodiment, a threaded hole is provided between two adjacent plate grooves, and the threaded hole is opened at the top of the rocking connecting plate and the top connecting plate. The top of the top connecting plate is fixed with a contour pressure plate by bolts, and the bottom end of the contour pressure plate is fixedly connected with a sealing plate gasket.

[0010] In a new embodiment, the ultrasonic component includes: an ultrasonic generator, which is installed on the left rear part of the fixed screen frame; a plurality of ultrasonic transducers are equidistantly arranged and all are installed on the lower left part of the floating screen frame, and the ultrasonic transducer is connected to one end of the waveguide rod passing through the inner wall of the floating screen frame; a wire tube is arranged at the bottom of the ultrasonic transducer, and the wire tube is installed on the lower left part of the floating screen frame, one end of the wire tube is connected to the ultrasonic generator, and the other end is connected to the ultrasonic transducer.

[0011] In a new embodiment, a sieve plate is installed on the inner upper side of the floating screen frame, a feed port is fixedly installed on the top rear of the floating screen frame, and a primary discharge port is opened on the front upper side of the floating screen frame.

[0012] In a new embodiment, a secondary discharge port is provided at the front lower side of the floating screen frame, and a bottom discharge port is provided at the bottom end of the floating screen frame.

[0013] In a new embodiment, a driving motor is installed on the top of the mounting frame, and a vibrator is installed in the middle of the floating screen frame. One end of the vibrator is fixedly connected to the output end of the driving motor through a coupling, and the left and right sides of the vibrator are connected to the side connecting plates through elastic bands, and the lower part of the side connecting plate is connected to the outward end of a plurality of shaking connecting plates.

[0014] In a new embodiment, one end of an edge screen is installed on the lower inner walls of the front and rear sides of the floating screen frame, and the other end of the edge screen is connected to the rocking connecting plates adjacent to the front and rear sides of the floating screen frame. The front and rear sides of the bottom end of the floating screen frame are set at an oblique angle.

[0015] In a new embodiment, the vibration-borrowing assembly includes: two extension frames, which are respectively installed on the left and right sides of the front of the fixed screen frame; a central turntable, which is installed on the upper part of the outward side of the extension frame, and the middle part of the central turntable is rotatably connected with vortex fan blades; a pipe-connected air bag, which is installed on the rear part of the central turntable, and the pipe-connected air bag is located at the front part of the side connecting plate; a branch transmission pipe, which is installed on the top of the central turntable, and the branch transmission pipe is located on the left and right sides of the front of the floating screen frame; two arc exhaust ports are provided, and the two arc exhaust ports are respectively located in the upper middle part of the front side of the floating screen frame, and the left and right ends of the arc exhaust port are connected to the branch transmission pipes on the left and right sides; a rubber pleated ring, which is installed on the left and right sides of the two arc exhaust ports, and the outer sides are installed on the left and right sides of the front of the floating screen frame.

[0016] Beneficial effect: Compared with the prior art, the advantages of the present invention are: through the combination of external eccentric shaft vibration and internal ultrasonic technology, efficient screening of coal is achieved. The vibration effect of the ultrasonic wave helps to destroy the adhesion between the coal, making it easier for the coal to fall off the screen, thereby reducing the energy consumption of the external drive device. This combined use method not only improves the screening efficiency, but also effectively reduces energy consumption, which meets the energy-saving requirements of modern industrial production.

[0017] The transmission path of ultrasonic waves is optimized by setting plate grooves, waveguide rods and branch guide rods. Ultrasonic waves are transmitted to each transverse section of the middle screen through the waveguide rods and their branch guide rods, causing the middle screen to move in a small range. This not only ensures that ultrasonic waves can act on the screen evenly and efficiently, but also improves the utilization rate of ultrasonic waves, further enhancing the screening effect.

[0018] The screen structure adopts a combination of shaking connecting plates, top connecting plates, middle screens and edge screens. The screen can be quickly installed and fixed through the design of mesh disk blocks and sockets, which not only improves the stability and durability of the screen, but also optimizes the screening performance of the screen. At the same time, the middle screen adopts a double-layer stacking installation, which further enhances the screening ability and carrying capacity of the screen, making the screening process more efficient and stable.

[0019] By utilizing the vibration force generated by the shaking of the side connecting plates, it is converted into dust-reducing wind force through the pipe-connected air bags and vortex fan blades. The wind force forms an air flow curtain at the curved exhaust port, which effectively isolates the emission of coal dust and guides the coal dust to flow back for screening. This not only reduces environmental pollution but also improves screening efficiency, realizes the efficient conversion of vibration force into dust-reducing wind force, and improves energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the fixed screen frame and the floating screen frame structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the connection structure of the fixed screen frame, shear spring and floating screen frame of the present invention.

[0022] Figure 3 It is a schematic diagram of the internal structure of the floating screen frame of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the installation state of the shaking connecting plate, the top connecting plate and the middle screen of the present invention.

[0024] Figure 5 It is a schematic diagram of the top structure of the middle screen of the present invention.

[0025] Figure 6 It is a schematic diagram of the bottom structure of the middle screen of the present invention.

[0026] Figure 7 It is a schematic diagram of the top structure of the shaking connecting plate and the top separating connecting plate of the present invention.

[0027] Figure 8 It is a schematic diagram of the position structure of the waveguide rod and the branch guide rod of the present invention.

[0028] Fig. 9 It is a schematic diagram of the contour pressing plate structure of the present invention.

[0029] Fig.10 It is a schematic diagram of the connection structure of the vibration exciter, elastic band and side connecting plate of the present invention.

[0030] Fig.11 It is a schematic diagram of the structure of the ultrasonic component of the present invention.

[0031] Fig.12 It is a schematic diagram of the position structure of the primary discharge port and the secondary discharge port of the present invention.

[0032] Fig.13 It is a schematic diagram of the structure of the vibration-borrowing component of the present invention.

[0033] Fig.14 It is a schematic diagram of the arc exhaust port structure of the present invention.

[0034] The reference numerals in the figure are: 1, fixed screen frame; 2, shear spring; 3, floating screen frame; 4, shaking connecting plate; 5, top connecting plate; 6, middle screen; 7, mesh plate block; 8, jack; 9, plate groove; 10, waveguide rod; 11, branch guide rod; 12, contour pressure plate; 13, sealing plate pad; 14, mounting frame; 15, ultrasonic component; 1501, ultrasonic generator; 1502, ultrasonic transducer; 1503, wire tube; 16, borrow Vibration assembly; 1601, extension frame; 1602, turntable; 1603, vortex fan blades; 1604, pipe-connected airbag; 1605, branch transmission pipe; 1606, arc exhaust port; 1607, rubber pleated ring; 17, screen plate; 18, feed port; 19, primary discharge port; 20, secondary discharge port; 21, bottom discharge port; 22, drive motor; 23, vibrator; 24, elastic belt; 25, side connecting plate; 26, edge screen. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0036] The embodiment of the present application solves the problems of high energy consumption and energy waste in the existing coal mine screening process by providing an energy-saving and environmentally friendly loose-fitting screen for coal mine production. When in use, the combination of external eccentric shaft vibration and internal ultrasonic technology is used to achieve efficient screening of coal materials, improve screening efficiency, reduce energy consumption of external driving devices, and meet the energy-saving requirements of modern industrial production.

[0037] The technical solution in the embodiments of the present application is to solve the above technical problems, and the overall idea is as follows. Example 1

[0038] See also Figure 1-Figure 14, an energy-saving and environmentally friendly relaxation screen for coal mine production, comprising: a fixed screen frame 1, arranged parallel to the ground; shear springs 2, respectively installed on the front and rear sides of the top of the fixed screen frame 1, and multiple shear springs 2 on the front and rear sides are arranged horizontally and equidistantly; a floating screen frame 3, the front and rear sides of the bottom are connected to the top of the shear spring 2; a plurality of swaying connecting plates 4 are arranged equidistantly, and the swaying connecting plates 4 are rotatably installed on the inner lower side of the floating screen frame 3; a partition top connecting plate 5 is arranged between two adjacent swaying connecting plates 4, and the partition top connecting plates 5 are fixedly installed on the inner lower side of the floating screen frame 3; a plurality of middle screens 6 are arranged, and They are all installed between adjacent shaking connecting plates 4 and partition top connecting plates 5; a plurality of plate grooves 9 are equidistantly provided at the top of the shaking connecting plates 4 and the partition top connecting plates 5, a waveguide rod 10 is installed inside the partition top connecting plate 5, a plurality of branch guide rods 11 are equidistantly installed on the top of the waveguide rod 10, one end of the branch guide rod 11 passes through the bottom wall of the plate groove 9 and extends to the inside of the plate groove 9; a mounting frame 14 is installed on the left side of the fixed screen frame 1; an ultrasonic component 15 is installed on the rear side of the fixed screen frame 1, for generating and transmitting ultrasonic waves; a vibration borrowing component 16 is installed on the front side of the fixed screen frame 1, for borrowing the vibration energy of the floating screen frame 3.

[0039] In this example, see Figure 1-Figure 14 As shown, the relaxation screen is composed of a fixed screen frame 1 and a floating screen frame 3, and a shear spring 2 connecting the two to form a main structure, and is matched with a driving motor 22 and a vibrator 23 to drive the floating screen frame 3 to shake, so that the coal material fed into the floating screen frame 3 is screened, and the first-level screening uses a screen plate 17, and the second-level screening uses a combination of a shaking connecting plate 4, a partition top connecting plate 5, a middle screen 6 and an edge screen 26. The two cooperate to complete the screening operation in coal mine production, wherein, ultrasonic auxiliary screening is introduced into the second-level screening process by setting a plate groove 9, a waveguide rod 10 and a branch guide rod 11. The specific process is as follows: First, ultrasonic waves are emitted by the ultrasonic component 15 and transmitted to the partition top connecting plate 5, and then The internally installed waveguide rod 10 and its branch guide rod 11 act as the medium for ultrasonic transmission, which transmits ultrasonic waves and acts on each lateral segment of the middle screen 6, so that the middle screen 6 can move in a small range, and cooperate with the externally shaking floating screen frame 3, thereby destroying the adhesion between the coal materials that fall on it, making it easier for the coal materials to fall off the screen, thereby reducing the energy consumption of the external driving device. This combined use method not only improves the screening efficiency, but also effectively reduces energy consumption, meets the energy-saving requirements of modern industrial production, and further improves the screening efficiency. The vibration effect of the ultrasonic wave also helps prevent the screen from being blocked, reduces the frequency of manual cleaning, and reduces maintenance costs.

[0040] Among them, the installation process of the shaking connecting plate 4, the partition top connecting plate 5 and the middle screen 6 is as follows: prepare two middle screens 6, first take the first middle screen 6 to determine the front and rear edges, and mark them, and place the front edge of the middle screen 6 on the top of the partition top connecting plate 5. Because the mesh disk block 7 is installed on the front and rear edges of the middle screen 6, on the one hand, the mesh disk block 7 will be embedded in the plate groove 9 on the top of the partition top connecting plate 5 to complete temporary fixation. On the other hand, due to the effect of the bottom socket 8 of the mesh disk block 7, the branch guide rod 11 extending from the plate groove 9 will be inserted into the socket 8 to complete secondary fixation and form an ultrasonic transmission path, and then take the second middle screen 6, and place the back of the middle screen 6 on the top of the partition top connecting plate 5 The part is moved so that it presses the front edge of the first middle screen 6, and is also temporarily fixed on the partition top plate 5 due to the effect of the mesh disk block 7. Finally, the contour pressing plate 12 is taken out and placed on the top of the partition top plate 5 on which the two sides of the middle screens 6 are superimposed and fixed with bolts to complete the external three-time fixation. The other side of the middle screen 6 is connected to the top of the shaking plate 4 in the same way, thereby completing the construction of the combined screen structure of the shaking plate 4, the partition top plate 5, the middle screen 6 and the edge screen 26. While facilitating installation, the transmission path of the ultrasonic wave is optimized, so that the ultrasonic wave is combined with the external vibration force to act on the middle screen 6 together, which can achieve better screening while reducing the energy consumption of a single external drive device.

[0041] For further information, see Figure 4-Figure 6 As shown, a plurality of mesh disk blocks 7 are equidistantly fixedly connected to the front and rear sides of the middle screen 6, the front mesh disk blocks 7 and the rear mesh disk blocks 7 are alternately distributed, and an overlapping opening is provided between two adjacent mesh disk blocks 7, and the overlapping opening is opened on the front and rear sides of the middle screen 6. By providing the mesh disk blocks 7, the middle screen 6 is fixedly connected to the shaking connecting plate 4 with the plate grooves 9 and the top connecting plate 5. In addition, the mesh disk blocks 7 are alternately distributed, and the overlapping openings are provided between the mesh disk blocks 7, so that after two middle screens 6 are superimposed, it will not affect the placement of the mesh disk blocks 7 in the corresponding plate grooves 9.

[0042] For further information, see Figure 6-Figure 8 As shown in the figure, a socket 8 is provided at the bottom end of the mesh disk block 7, and the diameter of the socket 8 is consistent with the diameter of the waveguide rod 10. By providing the socket 8, the mesh disk block 7 can be fixed in the plate groove 9 and can also be connected to the branch guide rod 11, so that the ultrasonic wave is transmitted from the branch guide rod 11 to the mesh disk block 7, and the mesh disk block 7 is then transmitted to the middle screen 6, so that the transmission distribution path of the ultrasonic wave is clearer and more evenly distributed.

[0043] For further information, see Figure 8 and Fig. 9As shown, a threaded hole is provided between two adjacent plate grooves 9, and the threaded hole is opened at the top of the shaking connecting plate 4 and the partition top connecting plate 5. The top of the partition top connecting plate 5 is fixed with a contour pressure plate 12 by bolts, and the bottom end of the contour pressure plate 12 is fixedly connected with a sealing plate gasket 13. By setting the contour pressure plate 12 and the sealing plate gasket 13, the contour pressure plate 12 can be used to well suppress the middle screen 6 placed on the shaking connecting plate 4 and the partition top connecting plate 5, and match the sealing plate gasket 13 at the bottom to improve the sealing performance and avoid the loosening hazard caused by the intrusion of coal.

[0044] For further information, see Fig.10 and Fig.11 As shown, a driving motor 22 is installed on the top of the mounting frame 14, and a vibrator 23 is installed in the middle of the floating screen frame 3. One end of the vibrator 23 is fixedly connected to the output end of the driving motor 22 through a coupling, and the left and right sides of the vibrator 23 are connected to the side connecting plate 25 through an elastic band 24, and the lower part of the side connecting plate 25 is connected to the outward end of a plurality of shaking connecting plates 4.

[0045] By setting a driving motor 22, a vibrator 23, an elastic belt 24 and a side connecting plate 25, the driving motor 22 and the coupling are used to drive the vibrator 23 to rotate, and the rotation of the vibrator 23 drives the entire floating screen frame 3 to shake, and the side connecting plate 25 connected to the vibrator 23 by the elastic belt 24 will also shake back and forth, thereby driving the shaking connecting plate 4 connected to the side connecting plate 25 to swing and shake internally, thereby performing alternating tensioning and relaxation movements on the connected middle screen 6 and edge screen 26 to complete the coal screening operation.

[0046] For further information, see Figure 3 As shown, one end of an edge screen 26 is installed on the lower inner walls of the front and rear sides of the floating screen frame 3, and the other end of the edge screen 26 is connected to the rocking connecting plate 4 located adjacent to the front and rear sides of the floating screen frame 3. The front and rear sides of the bottom end of the floating screen frame 3 are set at an angle. By setting the edge screen 26, the edge screens 26 at the front and rear parts are used to supplement the screening of the front and rear edge positions of the middle screen 6, and the angled setting of the front and rear sides of the bottom end of the floating screen frame 3 can better allow the coal to slide down and finally be discharged from the bottom discharge port 21. Example 2

[0047] See also Fig.10 and Fig.11As shown, the ultrasonic component 15 includes: an ultrasonic generator 1501, which is installed on the left rear part of the fixed screen frame 1; a plurality of ultrasonic transducers 1502 are equidistantly arranged and are all installed on the lower left part of the floating screen frame 3, and the ultrasonic transducer 1502 is connected to one end of the waveguide rod 10 that passes through the inner wall of the floating screen frame 3; a wire tube 1503, which is arranged at the lower part of the ultrasonic transducer 1502, and the wire tube 1503 is installed on the lower left part of the floating screen frame 3, one end of which is connected to the ultrasonic generator 1501, and the other end is connected to the ultrasonic transducer 1502.

[0048] By setting up an ultrasonic generator 1501, an ultrasonic transducer 1502 and a wire tube 1503, the ultrasonic generator 1501 first generates a high-frequency electric signal, which is transmitted to the ultrasonic transducer 1502 by the connected wire tube 1503. The ultrasonic transducer 1502 converts the electrical energy into mechanical energy, that is, generates high-frequency directional vibration, and its vibration is transmitted to the edge of the screen through the waveguide rod 10 and its branch guide rod 11, so that the screen surface vibrates slightly. Example 3

[0049] See also Figure 12-14 The vibration-borrowing assembly 16 comprises: an extension frame 1601, which is provided with two and is respectively installed on the left and right sides of the front of the fixed screen frame 1; a central rotating plate 1602, which is installed on the upper part of the outer side of the extension frame 1601, and the middle part of the central rotating plate 1602 is rotatably connected with a vortex fan blade 1603; a pipe-connected airbag 1604, which is installed at the rear of the central rotating plate 1602 and is located at the front of the side connecting plate 25; a branch transmission pipe 1605, which is installed at the central rotating plate 160 2, and the branch transmission pipe 1605 is located on the left and right sides of the front of the floating screen frame 3; there are two arc exhaust ports 1606, which are respectively located in the upper middle part of the front side of the floating screen frame 3, and the left and right ends of the arc exhaust port 1606 are connected with the left and right side branch transmission pipes 1605; the rubber pleated ring 1607 is installed on the left and right sides of the two arc exhaust ports 1606, and the outer side is installed on the left and right sides of the front of the floating screen frame 3.

[0050] By setting the extension frame 1601, the middle turntable 1602, the pipe-connected airbag 1604, the branch transmission pipe 1605, the arc exhaust port 1606 and the rubber pleated ring 1607, when the side connecting plate 25 is swung forward, the side connecting plate 25 hits and squeezes the pipe-connected airbag 1604 in front, and the released gas drives the vortex blade 1603 to rotate (when not squeezed, the air inlet valve installed at the pipe part of the pipe-connected airbag 1604 is used for returning air, which is not shown in the figure). The rotation of the vortex blade 1603 generates wind force, and the wind force is transmitted to the arc exhaust port 1606 through the branch transmission pipe 1605 (the rubber pleated ring 1607 enters a pleated state as the floating screen frame 3 swings, and will not drive the arc exhaust port 1606, ensuring that the arc exhaust port 16 06 can transmit airflow and is not affected by the shaking of the floating screen frame 3, and the front of the arc exhaust port 1606 is also installed with a contact cushion layer, which is not shown in the figure. Its main function is to avoid hard collision with the front inner wall during the shaking of the floating screen frame 3). As a result, an airflow curtain is formed at the arc exhaust port 1606 (i.e., the upper inner side of the first-level discharge port 19 and the second-level discharge port 20). This airflow curtain not only effectively isolates the emission of coal dust, but also guides the coal dust to be re-concentrated in the floating screen frame 3, and mixed with the subsequent coal material for screening. By forming an airflow curtain, the discharge of coal dust is effectively prevented, the pollution to the environment is reduced, it meets the environmental protection requirements of modern industrial production, is beneficial to the screening process, and improves the screening efficiency.

[0051] For further information, see Figure 3 and Fig.10 As shown, a sieve plate 17 is installed on the inner upper side of the floating screen frame 3, a feed port 18 is fixedly installed on the top rear part of the floating screen frame 3, a primary discharge port 19 is opened on the front upper side of the floating screen frame 3, a secondary discharge port 20 is opened on the front lower side of the floating screen frame 3, and a bottom discharge port 21 is opened on the bottom end of the floating screen frame 3. The feed port 18 is used for feeding coal. The primary discharge port 19 serves as a coal discharge port for large-particle coal of the sieve plate 17, the secondary discharge port 20 serves as a coal discharge port for medium-particle coal of the combined screen of the shaking connecting plate 4, the top connecting plate 5, the middle screen 6 and the edge screen 26, and the bottom discharge port 21 serves as a small-particle coal discharge port after screening by the above combined screens, so as to realize the graded collection of coal.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving and environmentally friendly relaxation screen for coal mine production, characterized in that: include: A fixed screen frame (1) is arranged parallel to the ground; Shear springs (2) are respectively mounted on the front and rear sides of the top of the fixed screen frame (1), and a plurality of shear springs (2) are arranged at equal intervals in the transverse direction on the front and rear sides; A floating screen frame (3), the front and rear sides of the bottom of which are connected to the top of the shear spring (2); A plurality of swaying connecting plates (4) are arranged at equal intervals, and the swaying connecting plates (4) are all rotatably mounted on the inner lower side of the floating screen frame (3); A top connecting plate (5) is arranged between two adjacent shaking connecting plates (4), and the top connecting plates (5) are fixedly mounted on the inner lower side of the floating screen frame (3); A plurality of middle screens (6) are provided, and each of the middle screens (6) is installed between adjacent shaking connecting plates (4) and partition top connecting plates (5); The tops of the swing connecting plate (4) and the top connecting plate (5) are provided with a plurality of plate grooves (9) at equal intervals, a waveguide rod (10) is installed inside the top connecting plate (5), and a plurality of branch guide rods (11) are installed at equal intervals on the top of the waveguide rod (10), one end of the branch guide rod (11) penetrates the bottom wall of the plate groove (9) and extends into the inside of the plate groove (9); A mounting frame (14) is mounted on the left side of the fixed screen frame (1); An ultrasonic component (15) is mounted on the rear side of the fixed screen frame (1) and is used to generate and transmit ultrasonic waves; The vibration-borrowing assembly (16) is installed on the front side of the fixed screen frame (1) and is used to borrow the vibration energy of the floating screen frame (3).

2. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: A plurality of mesh disk blocks (7) are fixedly connected to the front and rear sides of the middle screen (6) at equal intervals, the front mesh disk blocks (7) and the rear mesh disk blocks (7) are alternately distributed, and an overlapping opening is provided between two adjacent mesh disk blocks (7), the overlapping opening being opened on the front and rear sides of the middle screen (6).

3. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 2, characterized in that: The bottom end of each of the mesh disk blocks (7) is provided with an insertion hole (8), and the diameter of the insertion hole (8) is consistent with the diameter of the waveguide rod (10).

4. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: A threaded hole is provided between two adjacent plate grooves (9), the threaded hole being opened at the top of the swing connection plate (4) and the top connection plate (5), the top of the top connection plate (5) being fixed with a contour pressure plate (12) by bolts, and the bottom end of the contour pressure plate (12) being fixedly connected with a sealing plate gasket (13).

5. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: The ultrasonic component (15) comprises: An ultrasonic generator (1501) is mounted on the left rear portion of the fixed screen frame (1); A plurality of ultrasonic transducers (1502) are arranged at equal intervals and are all installed on the lower left side of the floating screen frame (3); the ultrasonic transducers (1502) are connected to one end of the waveguide rod (10) that passes through the inner wall of the floating screen frame (3); The wire tube (1503) is arranged at the lower part of the ultrasonic transducer (1502), and the wire tube (1503) is installed at the lower left part of the floating screen frame (3), one end of which is connected to the ultrasonic generator (1501), and the other end of which is connected to the ultrasonic transducer (1502).

6. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: A sieve plate (17) is installed on the inner upper side of the floating screen frame (3), a feed port (18) is fixedly installed at the rear of the top end of the floating screen frame (3), and a primary discharge port (19) is opened on the front upper side of the floating screen frame (3).

7. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: A secondary discharge port (20) is provided at the front lower side of the floating screen frame (3), and a bottom discharge port (21) is provided at the bottom end of the floating screen frame (3).

8. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: A driving motor (22) is installed on the top of the mounting frame (14), and a vibrator (23) is installed in the middle of the floating screen frame (3). One end of the vibrator (23) is fixedly connected to the output end of the driving motor (22) via a coupling, and the left and right sides of the vibrator (23) are connected to the side connecting plate (25) via an elastic band (24), and the lower part of the side connecting plate (25) is connected to the outward end of a plurality of shaking connecting plates (4).

9. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: One end of an edge screen (26) is mounted on the lower inner walls of the front and rear sides of the floating screen frame (3), and the other end of the edge screen (26) is connected to a swing connecting plate (4) located adjacent to the front and rear sides of the floating screen frame (3). The front and rear sides of the bottom end of the floating screen frame (3) are arranged at an oblique angle.

10. The energy-saving and environmentally friendly relaxation screen for coal mine production according to claim 1, characterized in that: The vibration-borrowing component (16) comprises: Two extension frames (1601) are provided and are respectively installed on the left and right sides of the front of the fixed screen frame (1); The middle rotating disk (1602) is installed on the upper part of the outward side of the extension frame (1601), and the middle part of the middle rotating disk (1602) is rotatably connected to the vortex fan blade (1603); A pipe-connected airbag (1604) is installed at the rear of the central rotating disk (1602), and the pipe-connected airbag (1604) is located at the front of the side connecting plate (25); The branch transmission pipe (1605) is installed on the top of the middle rotating disk (1602), and the branch transmission pipe (1605) is located on the left and right sides of the front of the floating screen frame (3); There are two arc exhaust ports (1606), the two arc exhaust ports (1606) are respectively located in the upper middle part of the front inner side of the floating screen frame (3), and the left and right ends of the arc exhaust ports (1606) are both connected to the branch transmission pipes (1605) on the left and right sides; The rubber pleated ring (1607) is installed on the left and right sides of the two arc air outlets (1606), and the outer sides are installed on the left and right sides of the front part of the floating screen frame (3).

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