An energy-saving and environmentally friendly tension screen for coal mine production

Abstract

This invention relates to the field of tension screen technology, providing an energy-saving and environmentally friendly tension 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, with multiple shear springs arranged laterally at equal intervals on both sides; a floating screen frame, with multiple swaying plates equidistantly arranged on the front and rear sides of the bottom connected to the top of the shear springs, and all swaying plates rotatably installed on the lower inner side of the floating screen frame; a top partition plate, disposed between two adjacent swaying plates, and all top partition plates fixedly installed on the lower inner side of the floating screen frame; and multiple middle screens, all installed between adjacent swaying plates and top partition plates. In use, this invention achieves efficient screening of coal through the combination of external eccentric shaft vibration and internal ultrasonic waves, reducing the energy consumption of external drive devices and meeting the energy-saving requirements of modern industrial production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flip-flow screen, more particularly, to an energy-saving and environment-friendly flip-flow screen for coal mine production. BACKGROUND

[0002] In the process of coal mine production, screening equipment is an indispensable important tool, and the eccentric shaft type flip-flow screen is a high-efficiency screening equipment, which mainly consists of fixed screen frame, floating screen frame, screen mesh and eccentric shaft mechanism, etc. By using the eccentric shaft mechanism to drive the floating screen frame to vibrate, the inside screen surface of the floating screen frame is also driven to perform alternating tension and relaxation movement, so that the material produces bouncing movement on the screen surface, realizing efficient screening of coal mine.

[0003] In the process of coal mine screening, the existing eccentric shaft type flip-flow screen basically only relies on the eccentric shaft mechanism to provide vibration screening kinetic energy for the floating screen frame and the screen mesh. However, this method highly depends on the kinetic energy provided by the eccentric shaft mechanism, and for the screening of small coal materials, it needs larger amplitude of vibration, which easily leads to high overall energy consumption. More importantly, in the process of vibration of the flip-flow screen, the vibration energy generated is not effectively utilized, but is directly dissipated, further aggravating the waste of energy, so there is energy-saving optimization space to reduce energy consumption and improve energy utilization efficiency.

[0004] Therefore, the present application provides an energy-saving and environment-friendly flip-flow screen for coal mine production to solve the above problems. SUMMARY

[0005] The technical problem to be solved is that, in view of the problems in the prior art, the present application aims to provide an energy-saving and environment-friendly flip-flow screen for coal mine production, which solves the problems of high energy consumption and energy waste in the process of screening of the existing flip-flow screen.

[0006] To solve the above technical problems, the present application provides the following technical scheme: An energy-saving and environment-friendly flip-flow screen for coal mine production, comprising: a fixed screen frame, which is arranged parallel to the ground; shear springs, which are respectively installed on the top front and back sides of the fixed screen frame, and a plurality of shear springs are horizontally and equidistantly arranged on the front and back sides; a floating screen frame, the bottom front and back sides of which are connected with the top of the shear springs through shaking link plates, a plurality of shaking link plates are equidistantly arranged, and the shaking link plates are all rotationally installed on the inner lower side of the floating screen frame; top separation plates, which are arranged between adjacent two shaking link plates, and the top separation plates are all fixedly installed on the inner lower side of the floating screen frame; middle screen meshes, which are arranged in a plurality of sets, and are all installed between adjacent shaking link plates and top separation plates; a plurality of plate block grooves are equidistantly arranged at the top of the shaking link plates and the top separation plates, a waveguide rod is installed in the top separation plate, a plurality of branch guide rods are equidistantly installed at the top of the waveguide rod, and one end of the branch guide rod penetrates through the bottom wall of the plate block groove and extends into the plate block groove; a matching frame, which is installed on the left side of the fixed screen frame; an ultrasonic wave assembly, which is installed on the back side of the fixed screen frame, and is used for generating and transmitting ultrasonic waves; a borrowed vibration assembly, which is installed on the front side of the fixed screen frame, and is used for borrowing the vibration energy of the floating screen frame.

[0007] In a new embodiment, a plurality of mesh disc blocks are equidistantly and fixedly connected to the front and back sides of the middle screen mesh, the front mesh disc blocks and the back mesh disc blocks are alternately distributed, a superimposed opening is arranged between adjacent two mesh disc blocks, and the superimposed opening is arranged on the front and back sides of the middle screen mesh.

[0008] In a new embodiment, a plug hole is arranged at the bottom end of the mesh disc block, 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 arranged between adjacent two plate block grooves, the threaded hole is arranged at the top of the shaking link plate and the top separation plate, a contour pressing plate is fixedly connected to the top end of the top separation plate through a bolt, and a sealing plate pad is fixedly connected to the bottom end of the contour pressing plate.

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

[0011] In a new embodiment, a screen plate is installed on the inner upper side of the floating screen frame, a feeding port is fixedly installed at the top rear part of the floating screen frame, and a first-stage discharging port is arranged on the upper side of the front part of the floating screen frame.

[0012] In a new embodiment, a second-stage discharging port is arranged on the lower side of the front part of the floating screen frame, and a bottom discharging port is arranged at the bottom end of the floating screen frame.

[0013] In a new embodiment, the top of the mounting frame is provided with a driving motor, the middle of the floating screen frame is provided with a vibration exciter, one end of the vibration exciter is fixedly connected with the output end of the driving motor through a shaft coupling, and the left and right sides of the vibration exciter are connected with the side connecting plates through elastic belts.

[0014] In a new embodiment, the front and rear sides of the floating screen frame are provided with one end of the edge screen net, the other end of the edge screen net is connected with the shaking connecting plates adjacent to the front and rear sides of the floating screen frame, and the bottom end of the floating screen frame is provided with an inclined angle.

[0015] In a new embodiment, the vibration assembly comprises: two extension frames, which are arranged on the left and right sides of the front of the fixed screen frame; a transfer disc, which is arranged on the outer side of the upper part of the extension frame, and the middle part of the transfer disc is rotatably connected with a vortex fan blade; a tube-connected air bag, which is arranged on the rear part of the transfer disc, and the tube-connected air bag is located in the front part of the side connecting plate; a branch transmission pipe, which is arranged on the top end of the transfer disc, and the branch transmission pipe is located in the left and right sides of the front part of the floating screen frame; two arc-shaped air outlets, which are located in the upper middle part of the front side of the floating screen frame, and the left and right ends of the arc-shaped air outlets are connected with the left and right branch transmission pipes; and a rubber wrinkle ring, which is arranged on the left and right sides of the arc-shaped air outlets, and the outer side is arranged on the left and right sides of the front part of the floating screen frame.

[0016] Beneficial effects: Compared with the prior art, the advantages of the present application are that: by using the combination of external eccentric shaft vibration and internal ultrasonic wave technology, efficient screening of coal is realized, the vibration effect of ultrasonic wave helps to destroy the adhesion between coal, so that the coal is more easily separated from the screen, thereby reducing the energy consumption of the external driving device. This combined use not only improves the screening efficiency, but also effectively reduces the energy consumption, which meets the energy saving requirements of modern industrial production.

[0017] The transmission path of ultrasonic waves is optimized by setting the plate block groove, waveguide rod and branch guide rod, and the ultrasonic waves are transmitted to each transverse section of the middle screen net through the waveguide rod and its branch guide rod, so that the middle screen net performs small amplitude coordination, which not only ensures that the ultrasonic waves can uniformly and efficiently act on the screen, but also improves the utilization rate of ultrasonic waves, and further enhances the screening effect.

[0018] The screen structure adopts the combination of shaking connecting plates, top separating plates, middle screen nets and edge screen nets, and the screen is quickly installed and fixed through the design of net disc blocks and jack plugs, 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 net is installed in double layers, which further enhances the screening capacity and carrying capacity of the screen, making the screening process more efficient and stable.

[0019] By utilizing the vibration force generated by the side link plate shaking, the wind force generated by the tube joint air bag and the vortex fan blade is converted into dust fall, the wind force forms an air curtain at the arc exhaust port, effectively isolates the coal dust emission, guides the coal dust backflow to be re-screened, reduces the environmental pollution, improves the screening efficiency, realizes the efficient conversion of vibration force to dust fall wind force, and improves the energy utilization rate. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

[0023] Figure 4 It is a shaking link plate, top isolation link plate and middle screen mesh installation state structure diagram of the application.

[0024] Figure 5 It is a middle screen mesh top structure diagram of the application.

[0025] Figure 6 It is a middle screen mesh bottom structure diagram of the application.

[0026] Figure 7 It is a shaking link plate and top isolation link plate top structure diagram of the application.

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

[0028] Figure 9 It is a contour pressing plate structure diagram of the application.

[0029] Figure 10 It is a vibration exciter, elastic band and side link plate connection structure diagram of the application.

[0030] Figure 11 It is an ultrasonic wave assembly structure diagram of the application.

[0031] Figure 12 It is a first level discharge port and second level discharge port position structure diagram of the application.

[0032] Figure 13 It is a vibration borrowing assembly structure diagram of the application.

[0033] Figure 14 It is an arc exhaust port structure diagram of the application.

[0034] The figure is marked as: 1, fixed screen frame; 2, shear spring; 3, floating screen frame; 4, shaking web; 5, top spacer web; 6, middle screen; 7, net disc block; 8, jack; 9, plate block groove; 10, waveguide rod; 11, branch guide rod; 12, profile pressing plate; 13, sealing plate pad; 14, fitting frame; 15, ultrasonic assembly; 1501, ultrasonic generator; 1502, ultrasonic transducer; 1503, wire tube; 16, borrow vibration assembly; 1601, extension frame; 1602, transfer disc; 1603, eddy fan blade; 1604, pipe joint air bag; 1605, branch transmission pipe; 1606, radian exhaust port; 1607, rubber wrinkle ring; 17, screen plate; 18, feed inlet; 19, first-stage discharge outlet; 20, second-stage discharge outlet; 21, bottom discharge outlet; 22, driving motor; 23, exciter; 24, elastic belt; 25, side connecting plate; 26, edge screen. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0036] The energy-saving and environment-friendly flip-flop screen for coal mine production provided by the embodiments of the present application solves the problems of high energy consumption and energy waste of the existing flip-flop screen in the coal mine screening process. In use, the high-efficiency screening of coal is realized by the use of external eccentric shaft type vibration and internal ultrasonic technology, the screening efficiency is improved, the energy consumption of the external driving device is reduced, and the energy-saving requirement of modern industrial production is met.

[0037] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems. Embodiment 1

[0038] Please refer to Figures 1-14The utility model relates to a kind of energy-saving and environment-friendly slack screen for coal production, comprising: fixed screen frame 1, it is arranged in parallel with ground;Shear spring 2 is respectively installed in the top front and back of fixed screen frame 1, and front and back shear spring 2 are laterally equidistantly provided with multiple;Floating screen frame 3, bottom front and back are connected with the top of shear spring 2;Shaking link plate 4, equidistantly provided with multiple, and shaking link plate 4 are all rotationally installed in the inside lower side of floating screen frame 3;Top separation plate 5 is arranged between adjacent two shaking link plates 4, and top separation plate 5 are all fixedly installed in the inside lower side of floating screen frame 3;Middle screen 6 is provided with multiple, and are all installed between adjacent shaking link plate 4 and top separation plate 5;Top of shaking link plate 4 and top separation plate 5 equidistantly open multiple slab slots 9, top separation plate 5 is internally installed with waveguide rod 10, waveguide rod 10 is equidistantly installed with multiple branch guide rods 11 in top, and one end of branch guide rod 11 penetrates slab slot 9 bottom wall and extends to slab slot 9 inside;Fitting frame 14 is installed in the left side of fixed screen frame 1;Ultrasonic wave assembly 15 is installed in the back of fixed screen frame 1, for generating and transmitting ultrasonic wave;Borrowing vibration assembly 16 is installed in the front of fixed screen frame 1, for borrowing the vibration energy of floating screen frame 3.

[0039] In the embodiment, please refer to Figures 1-14 As shown in the figure, slack screen is composed of fixed screen frame 1 and floating screen frame 3, and shear spring 2 connecting the two, the main structure is matched with driving motor 22 and exciter 23 to drive floating screen frame 3 to shake, and coal material sent into floating screen frame 3 is screened, first-stage screening utilizes screen plate 17, and second-stage screening utilizes combined screen of shaking link plate 4, top separation plate 5, middle screen 6 and edge screen 26, and the two complete screening operation in coal production, wherein, ultrasonic wave is introduced in second-stage screening process by setting slab slot 9, waveguide rod 10 and branch guide rod 11 to assist screening, and specific process is as follows: first, ultrasonic wave is emitted by ultrasonic wave assembly 15 and transmitted to top separation plate 5, and waveguide rod 10 and its branch guide rod 11 installed in the inside of top separation plate 5 act as medium of ultrasonic wave transmission, and ultrasonic wave is transmitted and acts on every horizontal section of middle screen 6, so that middle screen 6 is coordinated with small amplitude, and floating screen frame 3 is shaken outside, thereby destroying the adhesion between coal material falling on it, so that coal material is more easily dropped from screen, thereby reducing the energy consumption of external driving device, and the combined use mode not only improves screening efficiency, but also effectively reduces energy consumption, meets the energy-saving requirement of modern industrial production, further improves screening efficiency, and the vibration effect of ultrasonic wave also helps to prevent screen from being blocked, reduces the frequency of manual cleaning, and reduces maintenance cost.

[0040] The installation process of the shaking connector plate 4, the top isolation connector plate 5 and the middle screen 6 is as follows: two middle screens 6 are prepared, first, the first middle screen 6 is taken and the front and back edges are determined and marked, the front edge of the middle screen 6 is placed on the top of the top isolation connector plate 5, because the front and back edges of the middle screen 6 are both provided with the net disc block 7, on the one hand, the net disc block 7 is embedded into the plate block groove 9 on the top of the top isolation connector plate 5 to be temporarily fixed, on the other hand, the net disc block 7 is connected with the branch guide rod 11 extending out of the plate block groove 9 through the insertion hole 8 to be fixed again and to form the ultrasonic wave transmission path, then the second middle screen 6 is taken and the back edge of the middle screen 6 is also placed on the top of the top isolation connector plate 5 to press the front edge of the first middle screen 6 and to be temporarily fixed on the top isolation connector plate 5 again through the net disc block 7, finally, the profile pressing plate 12 is taken and placed on the top of the top isolation connector plate 5 with the two middle screens 6 and is fixed by bolts to be fixed for the third time, the other edge of the middle screen 6 is connected with the top of the shaking connector plate 4 in the same way, so that the combined screen structure of the shaking connector plate 4, the top isolation connector plate 5, the middle screen 6 and the edge screen 26 is constructed, the installation is convenient, the ultrasonic wave transmission path is optimized, the ultrasonic wave and the external vibration force are combined to act on the middle screen 6 to better screen and reduce the energy consumption of the single external driving device.

[0041] Further, referring to Figures 4-6 As shown in the figure, the front and back sides of the middle screen 6 are fixedly connected with a plurality of net disc blocks 7, the front net disc blocks 7 and the back net disc blocks 7 are alternately distributed, and the adjacent two net disc blocks 7 are provided with a stacking opening, the stacking opening is arranged on the front and back sides of the middle screen 6, through the arrangement of the net disc blocks 7, the fixed connection of the middle screen 6 with the shaking connector plate 4 and the top isolation connector plate 5 provided with the plate block groove 9 is realized, the net disc blocks 7 are alternately distributed, and the stacking opening arranged between the net disc blocks 7 can also make the two middle screens 6 stacked without affecting the placement of the net disc blocks 7 on the corresponding plate block groove 9.

[0042] Further, referring to Figures 6-8 As shown in the figure, the bottom end of the net disc block 7 is provided with an insertion hole 8, the diameter of the insertion hole 8 is consistent with the diameter of the waveguide rod 10, through the arrangement of the insertion hole 8, the net disc block 7 entering the plate block groove 9 can be fixed and connected with the branch guide rod 11, so that the ultrasonic wave is transmitted from the branch guide rod 11 to the net disc block 7 and then to the middle screen 6, so that the transmission and distribution path of the ultrasonic wave is more clear and uniform.

[0043] Further, referring to Figure 8 and Figure 9As shown, the adjacent two plate grooves 9 are provided with threaded holes, the threaded holes are opened on the top of the wobble connecting plate 4 and the top connecting plate 5, the top end of the top connecting plate 5 is fixed with a contour pressing plate 12 through a bolt, the bottom end of the contour pressing plate 12 is fixedly connected with a sealing plate pad 13, by setting the contour pressing plate 12 and the sealing plate pad 13, the contour pressing plate 12 can well press the middle screen 6 placed on the wobble connecting plate 4 and the top connecting plate 5, and the sealing plate pad 13 at the bottom improves the sealing property and avoids the loose damage caused by the coal invasion.

[0044] Further, please refer to Figure 10 and Figure 11 As shown, the top of the matching frame 14 is provided with a driving motor 22, and the middle of the floating screen frame 3 is provided with a vibration exciter 23, one end of the vibration exciter 23 is fixedly connected with the output end of the driving motor 22 through a shaft coupling, and the left and right sides of the vibration exciter 23 are connected with side connecting plates 25 through elastic belts 24, and the lower parts of the side connecting plates 25 are connected with the outward ends of the plurality of wobble connecting plates 4.

[0045] By setting the driving motor 22, the vibration exciter 23, the elastic belt 24 and the side connecting plate 25, the driving motor 22 drives the vibration exciter 23 to rotate through the shaft coupling, the vibration exciter 23 drives the whole floating screen frame 3 to shake, and the side connecting plate 25 connected with the vibration exciter 23 also shakes forward and backward through the elastic belt 24, thereby driving the wobble connecting plate 4 connected with the side connecting plate 25 to swing and shake inside, so as to make the connected middle screen 6 and edge screen 26 to alternately tension and relax, thereby completing the coal screening work.

[0046] Further, please refer to Figure 3 As shown, the front and rear lower inner walls of the floating screen frame 3 are provided with one end of the edge screen 26, the other end of the edge screen 26 is connected with the wobble connecting plate 4 adjacent to the front and rear sides inside the floating screen frame 3, and the front and rear sides of the bottom end of the floating screen frame 3 are provided with inclined angles, by setting the edge screen 26, the front and rear edge positions of the middle screen 6 are supplemented by the front and rear edge screens 26, and the inclined angle setting of the front and rear sides of the bottom end of the floating screen frame 3 better makes the coal slide and finally discharged through the bottom discharge port 21. Example 2

[0047] Please refer to Figure 10 and Figure 11As shown, the ultrasonic assembly 15 comprises: an ultrasonic generator 1501 installed on the left rear part of the fixed screen frame 1; a plurality of ultrasonic transducers 1502 equidistantly arranged and installed on the left lower part of the floating screen frame 3, the ultrasonic transducers 1502 being connected to one end of the waveguide rod 10 penetrating the inner wall of the floating screen frame 3; and a wire tube 1503 arranged on the lower part of the ultrasonic transducer 1502 and installed on the left lower part of the floating screen frame 3, one end of the wire tube 1503 being connected to the ultrasonic generator 1501 and the other end being connected to the ultrasonic transducer 1502.

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

[0049] Please refer to Figures 12-14 The vibration assembly 16 comprises: two extension frames 1601 installed on the front left and right sides of the fixed screen frame 1; a transfer disc 1602 installed on the outer upper part of the extension frame 1601, and the middle part of the transfer disc 1602 is rotatably connected to an eddy fan blade 1603; a tube-connected air bag 1604 installed on the rear part of the transfer disc 1602, the tube-connected air bag 1604 being located on the front part of the side connecting plate 25; a branch transmission pipe 1605 installed on the top end of the transfer disc 1602, and the branch transmission pipe 1605 being located on the front left and right sides of the floating screen frame 3; two arc-shaped air outlets 1606 located on the inner upper middle part of the front side of the floating screen frame 3, and the left and right ends of the arc-shaped air outlet 1606 are connected to the left and right branch transmission pipes 1605; and a rubber wrinkle ring 1607 installed on the left and right sides of the two arc-shaped air outlets 1606 and on the front left and right sides of the floating screen frame 3.

[0050] By setting the extension frame 1601, the transfer disc 1602, the pipe connection air bag 1604, the branch transmission pipe 1605, the arc exhaust port 1606 and the rubber wrinkle ring 1607, when the side connecting plate 25 shakes forward, the side connecting plate 25 hits and squeezes the front pipe connection air bag 1604, the released gas drives the vortex fan blade 1603 to rotate (when not squeezed, the pipe part of the pipe connection air bag 1604 is provided with an air inlet valve for returning air, which is not shown in the figure), the rotation of the vortex fan blade 1603 generates wind power, which is transmitted to the arc exhaust port 1606 through the branch transmission pipe 1605, (the rubber wrinkle ring 1607 enters the wrinkled state when the floating screen frame 3 shakes, and does not drive the arc exhaust port 1606, which ensures that the arc exhaust port 1606 can transmit airflow and is not affected by the shaking of the floating screen frame 3, and the front part of the arc exhaust port 1606 is also provided with a contact soft pad layer, which is not shown in the figure, the main function is to avoid hard collision with the inner wall of the front part during the shaking of the floating screen frame 3), so that an airflow curtain is formed at the arc exhaust port 1606 (that is, the internal upper side position of the first discharge port 19 and the second discharge port 20). This airflow curtain not only effectively isolates the emission of coal dust, but also guides the coal dust to re-concentrate in the floating screen frame 3 and mix with the subsequent coal again for screening. The formation of the airflow curtain effectively prevents the emission of coal dust, reduces the pollution to the environment, meets the environmental protection requirements of modern industrial production, and is also conducive to the screening process and improves the screening efficiency.

[0051] Further, as shown in Figure 3 and Figure 10 , the upper side of the floating screen frame 3 is provided with a screen plate 17, the top rear part of the floating screen frame 3 is fixedly provided with a feed inlet 18, the front upper side of the floating screen frame 3 is provided with a first discharge port 19, the front lower side of the floating screen frame 3 is provided with a second discharge port 20, and the bottom end of the floating screen frame 3 is provided with a bottom discharge port 21. The feed inlet 18 is used for feeding coal, the first discharge port 19 is used as a large particle coal outlet of the screen plate 17, the second discharge port 20 is used as a medium particle coal outlet of the combined screen of the shaking connecting plate 4, the top separating plate 5, the middle screen 6 and the edge screen 26, and the bottom discharge port 21 is used as a small particle coal outlet after screening by the combined screen, so as to realize the classification and collection of coal.

[0052] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions described in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy-saving and environment-friendly flip-flop screen for coal mine production, characterized in that, Include: Fixed screen frame (1) is arranged parallel to the ground; Shear spring (2) is respectively installed on the top front and back of the fixed screen frame (1), and the front and back shear springs (2) are transversely equidistantly provided with a plurality of; Floating screen frame (3) is connected with the top of the shear spring (2) on the bottom front and back; Shaking adapter plate (4) is equidistantly provided with a plurality of, and the shaking adapter plate (4) is rotatably installed on the inside of the lower side of the floating screen frame (3); The top plate (5) is arranged between the adjacent two shaking adapter plates (4), and the top plate (5) is fixedly installed on the inside of the lower side of the floating screen frame (3); The middle screen (6) is provided with a plurality of, and is installed between the adjacent shaking adapter plate (4) and the top plate (5); The top of the shaking adapter plate (4) and the top plate (5) is equidistantly provided with a plurality of plate grooves (9), the inside of the top plate (5) is provided with a waveguide rod (10), 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) penetrates the bottom wall of the plate groove (9) and extends into the plate groove (9); The matching frame (14) is installed on the left side of the fixed screen frame (1); The ultrasonic wave assembly (15) is installed on the back of the fixed screen frame (1), and is used for generating and transmitting ultrasonic waves; The borrowed vibration assembly (16) is installed on the front side of the fixed screen frame (1), and is used for borrowing the vibration energy of the floating screen frame (3); The front and back of the middle screen (6) is equidistantly fixedly connected with a plurality of net disc blocks (7), the front net disc block (7) and the back net disc block (7) are alternately distributed, and the adjacent two net disc blocks (7) are provided with a superposition opening, the superposition opening is arranged on the front and back of the middle screen (6); The bottom end of the net disc block (7) is provided with a jack (8), and the diameter of the jack (8) is consistent with the diameter of the waveguide rod (10); The ultrasonic wave assembly (15) comprises: Ultrasonic wave generator (1501) is installed on the left side of the fixed screen frame (1); The ultrasonic transducer (1502) is equidistantly provided with a plurality of, and is installed on the left lower part of the floating screen frame (3), the ultrasonic transducer (1502) is connected with the one end of the waveguide rod (10) penetrating the inner wall of the floating screen frame (3); The wire tube (1503) is arranged on the lower part of the ultrasonic transducer (1502), and the wire tube (1503) is installed on the left lower part of the floating screen frame (3), one end is connected with the ultrasonic wave generator (1501), the other end is connected with the ultrasonic transducer (1502); The borrowed vibration assembly (16) comprises: Extension frame (1601) is provided with two, respectively installed on the front and back of the fixed screen frame (1); The middle transfer disc (1602) is installed on the outside of the upper part of the extension frame (1601), and the middle of the middle transfer disc (1602) is rotatably connected with the eddy fan blade (1603); The pipe connection air bag (1604) is installed on the back of the middle transfer disc (1602), and the pipe connection air bag (1604) is located in the front of the side connecting plate (25). Branch transmission pipe (1605) is installed at the top of the transfer disc (1602), and the branch transmission pipe (1605) is located at the left and right sides of the front of the floating sieve frame (3); Arc exhaust port (1606) is provided with two, two arc exhaust ports (1606) are located at the upper middle part of the front side of the floating sieve frame (3), and the left and right ends of the arc exhaust port (1606) are communicated with the left and right branch transmission pipes (1605). Rubber wrinkle 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 sieve frame (3).

2. The energy-saving and environment-friendly flip-flop screen for coal mine production according to claim 1, characterized in that, Threaded holes are arranged between adjacent two plate grooves (9), the threaded holes are arranged on the top of the floating connecting plate (4) and the top connecting plate (5), the top end of the top connecting plate (5) is fixedly provided with a profile pressing plate (12) through bolts, and the bottom end of the profile pressing plate (12) is fixedly connected with a sealing plate pad (13).

3. The energy-saving and environment-friendly flip-flop screen for coal mine production according to claim 1, characterized in that, The inside of the floating sieve frame (3) is provided with a sieve plate (17), the top rear of the floating sieve frame (3) is fixedly provided with a feeding port (18), and the front upper side of the floating sieve frame (3) is provided with a first discharge port (19).

4. The energy-saving and environment-friendly flip-flop screen for coal mine production according to claim 1, characterized in that, The front lower side of the floating sieve frame (3) is provided with a second discharge port (20), and the bottom end of the floating sieve frame (3) is provided with a bottom discharge port (21).

5. The energy-saving and environment-friendly flip-flop screen for coal mine production according to claim 1, characterized in that, The top of the matching frame (14) is provided with a driving motor (22), the middle of the floating sieve frame (3) is provided with a vibration exciter (23), one end of the vibration exciter (23) is fixedly connected with the output end of the driving motor (22) through a shaft coupling, the left and right sides of the vibration exciter (23) are connected with the side connecting plate (25) through the elastic belt (24), and the lower part of the side connecting plate (25) is connected with the outward end of the plurality of floating connecting plates (4).

6. The energy saving and environment friendly flip-flop screen for coal mine production according to claim 1, characterized in that, The front and rear lower inner walls of the floating sieve frame (3) are provided with one end of the edge screen (26), the other end of the edge screen (26) is connected with the floating connecting plate (4) adjacent to the front and rear sides of the floating sieve frame (3), and the front and rear sides of the bottom end of the floating sieve frame (3) are provided with inclined angles.

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