A device for clearing blockage of vibrating screen

Abstract

The invention relates to the field of vibrating screen equipment, and in particular to a device for clearing blockages of a vibrating screen. Aiming at the problem that the prior art is difficult to clean when the screen is seriously blocked, a device for clearing blockages of a vibrating screen is proposed, comprising a cleaning cylinder and a mounting cylinder slidably connected to the surface of the cleaning cylinder, an air control device for controlling the reciprocating movement of the cleaning cylinder is mounted on the upper end of the mounting plate, the upper end of the mounting cylinder is respectively connected to the air control device, a plurality of auxiliary cylinders distributed in an annular shape are respectively fixedly connected to the surface of the mounting cylinder, a plurality of conical holes distributed in an annular shape are provided at the bottom of the auxiliary cylinder, the screen can be unblocked by air flow impact and liquid flushing while cleaning, and the unblocking effect is remarkable, and the screen surface can be cleaned by a roller while unblocking, so as to further improve the unblocking effect of the screen and prevent the screen from being blocked again due to residual impurities.

Description

Technical Field

[0001] The invention relates to the field of vibrating screen equipment, in particular to a blocking clearing device for a vibrating screen. Background Art

[0002] The oil vibrating screen usually adopts a large-scale plane vibrating screen structure, and the material is screened by the swing of the screen surface. During the screening process, according to the different particle sizes and densities of the materials, the large particles of the materials gradually move upward, and the small particles of the materials fall to the bottom through the screen holes. It has the characteristics of large amplitude, high screening efficiency, and strong processing capacity. It is an indispensable and important equipment in oil and gas drilling operations, and is used to efficiently separate drill cuttings from drilling fluid or mud. During the use of the oil vibrating screen, due to the large amount of fine particles in the drilling fluid or mud, the size of these fine particles is close to the size of the screen holes, and the wet fine particles will They stick to each other and form clumps on the screen surface, making it easy for fine-grained materials to get stuck on the screen holes, causing blockage. Other additives or chemicals in the drilling fluid covering the screen can also easily cause the screen to become clogged. Currently, after the vibrating screen is clogged, it is difficult to clean the screen. Minor blockages can be cleared by manual cleaning or flushing with a water gun. When the screen is seriously clogged, a large amount of additives and chemicals in the drilling fluid are deposited on the surface of the screen. The structure is firm and difficult to clean manually. It is also difficult to clean it up with a water gun. Residues are likely to appear on the surface of the screen, affecting subsequent use. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a device for clearing blockages in a vibrating screen, which effectively solves the problems mentioned in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A blockage clearing device for a vibrating screen comprises a base and an electric lifting rod fixedly connected to the upper end of the base, wherein the upper end of the electric lifting rod is provided with a blockage clearing device capable of moving forward and backward;

[0006] The blockage clearing device comprises a mounting plate, the bottom of which is respectively connected to two relatively movable cleaning plates in a sliding manner along the length direction, a plurality of dredging components are mounted on the lower end of the cleaning plate along the length direction, and a control component for controlling the moving distance of the cleaning plate is mounted on the rear end of the mounting plate;

[0007] The dredging assembly includes a cleaning cylinder and a mounting cylinder slidably connected to the surface of the cleaning cylinder. The mounting cylinders are fixedly connected to corresponding cleaning plates. The upper end of the mounting plate is equipped with an air control device for controlling the reciprocating movement of the cleaning cylinder. The upper end of the mounting cylinder is connected to the air control device.

[0008] The pneumatic control device includes a piston assembly mounted on the upper end of a mounting plate, a rotating plate is arranged on the upper side of the piston assembly, the rotating plate is rotatably connected to the mounting plate, a hinged rod is hinged at a non-central position of the lower end of the rotating plate, and the other end of the hinged rod is hinged to the movable end of the piston assembly; a control motor is arranged on the upper side of the rotating plate, the control motor is fixedly connected to the mounting plate, and the output end of the control motor is fixedly connected to the rotating plate;

[0009] The upper ends of the installation cylinders belonging to the same dredging assembly are fixedly connected and connected to a second connecting pipe, the right ends of the second connecting pipes are respectively fixedly connected and connected to a second delivery pipe, and the other ends of the second delivery pipes are respectively fixedly connected and connected to the gas delivery end of the piston assembly;

[0010] A plurality of annularly distributed auxiliary cylinders are fixedly connected to the surface of the mounting cylinder, and pistons are axially slidably connected to the inside of the auxiliary cylinders, and piston rods are fixedly connected to the lower ends of the pistons, and the lower ends of the piston rods are fixedly connected to the cleaning cylinders; a transition cylinder is fixedly connected to the upper end of the mounting plate, and the upper ends of the auxiliary cylinders are connected to the transition cylinders, and a through hole is downwardly opened at the upper end of the piston to connect the upper and lower ends of the piston, and a first one-way valve that can only allow one-way air intake is fixedly connected in the through hole, and a second one-way valve that can only allow one-way air intake is fixedly connected to the upper end interface of the auxiliary cylinder, and a plurality of annularly distributed conical holes are opened at the bottom of the auxiliary cylinder.

[0011] Preferably, a sliding hole is provided at the lower end of the cleaning cylinder, and a cleaning rod that moves up and down is slidably connected to the inside of the sliding hole, and the bottom of the cleaning rod is a conical structure with the tip facing downward; a spring baffle is coaxially fixedly connected to the upper end of the cleaning rod, and the spring baffle is slidably connected to the inner wall of the cleaning cylinder, and buffer springs are respectively provided at the upper and lower ends of the spring baffle.

[0012] Preferably, the control component includes two first and second screw rods arranged up and down, the first and second screw rods are respectively rotatably connected to the mounting plate, the surfaces of the first and second screw rods are respectively provided with spiral grooves, a matching block is slidably fitted between the first and second screw rods, the upper and lower ends of the matching block are respectively fixedly connected with connecting pins, the connecting pins are respectively slidably connected with the corresponding spiral grooves, the right ends of the first and second screw rods are provided with driving components that respectively drive the first and second screw rods to rotate, and the rotation directions of the first and second screw rods are opposite under the drive of the driving components; the lower end of the matching block is fixedly connected to one of the cleaning plates, and the corresponding ends of the two cleaning plates are respectively fixedly connected with connecting racks, a reversing gear is meshed between the two connecting racks, and the reversing gear is rotatably connected to the mounting plate.

[0013] Preferably, the driving component includes a vertically arranged driving shaft located at the right end of the first screw rod and the second screw rod, a driving motor is arranged on the lower side of the driving shaft, and the output end of the driving motor is fixedly connected to the driving shaft coaxially; a transmission cylinder capable of moving up and down is splinedly connected to the surface of the driving shaft, and the upper and lower ends of the transmission cylinder are respectively fixedly connected coaxially with the first transmission bevel gear, and the right ends of the first screw rod and the second screw rod are respectively fixedly connected coaxially with the second transmission bevel gear capable of meshing with the first transmission bevel gear. When the transmission cylinder moves up and down, the first screw rod and the second screw rod are respectively driven to rotate through the meshing of the first transmission bevel gear and the second transmission bevel gear.

[0014] Preferably, a first spline shaft is arranged between the first screw rod and the second screw rod, and a receiving hole is provided on the surface of the matching block along the axial direction of the first spline shaft, the first spline shaft passes through the receiving hole and the two ends of the first spline shaft are respectively rotatably connected to the mounting plate; a thumb wheel is fixedly connected to the right end of the first spline shaft coaxially, a groove wheel is meshed with the front side of the thumb wheel, the groove wheel is rotatably connected to the mounting plate, a swing plate is fixedly connected to the front end of the groove wheel coaxially, a matching groove is provided on the surface of the swing plate along the length direction, an annular sleeve is rotatably connected to the surface of the transmission cylinder, the annular sleeve is vertically slidably connected to the surface of the mounting plate, a matching pin is fixedly connected to the surface of the annular sleeve, the matching pin is slidably matched with the matching groove, and the axial movement of the transmission cylinder is controlled under the swing of the swing plate;

[0015] Positioners capable of adjusting the position are respectively installed on both sides of the surface of the first spline shaft, and a limit plate is arranged on the rear side of the first spline shaft. The limit plate is fixedly connected to the mounting plate, and the positioner is detachably connected to the limit plate. When the matching block pushes the positioner, the dial wheel can be driven to rotate one circle, and the rotation directions of the dial wheel are opposite when the positioners on both sides are pushed respectively.

[0016] Preferably, the positioner includes an outer cylinder and an inner cylinder fixedly connected to the inner part of the outer cylinder, the inner cylinder is spline-connected to the first spline shaft, a partition is arranged between the outer cylinder and the inner cylinder, the inner ends of the partitions are respectively slidably connected to movable cylinders coaxially, the inner walls of the partitions are respectively provided with guide grooves of one spiral circle, the surfaces of the movable cylinders are respectively fixedly connected to guide pins, the guide pins are respectively slidably connected to the guide grooves, when the movable cylinder on the left side moves to the left side, the first spline shaft is driven to rotate forward one circle under the sliding cooperation of the guide pin and the guide groove, and when the movable cylinder on the right side moves to the right side, the first spline shaft is driven to rotate counterclockwise one circle under the sliding cooperation of the guide pin and the guide groove; the two movable cylinders are respectively provided with guide pins and guide grooves. The inner ends of the movable cylinders are respectively provided with accommodating grooves axially outwardly, and the interiors of the accommodating grooves are respectively sleeved with storage springs, and the inner ends of the accommodating grooves are respectively slidably connected with pushing cylinders that can only move along the axial direction of the accommodating grooves, and the surfaces of the pushing cylinders are respectively fixedly connected with the first sliding plates, and the surfaces of the outer cylinders are respectively rotatably connected with the second sliding plates, and the first sliding plates are respectively slidably connected with the second sliding plates, and the front ends of the second sliding plates are respectively fixedly connected with fixing screws, and the surface of the limit plate is provided with limiting grooves along the length direction, and the fixing screws respectively pass through the limiting grooves and the rear ends of the fixing screws are respectively threadedly connected with fixing knobs, and the fixing knobs are located at the rear end of the limit plate;

[0017] One end surface of the thumbwheel is coaxially fixedly connected with a brake plate, a tooth groove is provided on the circumferential surface of the brake plate, a mounting groove is provided on the surface of the limit plate on the rear side of the brake plate along the radial direction of the brake plate, a brake tooth block is slidably connected inside the mounting groove, one end of the brake tooth block is meshed with the tooth groove, the other end of the brake tooth block is fixedly connected with an engaging spring, and the other end of the engaging spring is fixedly connected to the inner wall of the mounting groove.

[0018] Preferably, the two ends of the first screw rod are respectively rotatably connected to a linkage plate, the other end of the linkage plate is jointly rotatably connected to a second spline shaft, the surface of the second spline shaft is splined to a roller, the left end of the first screw rod is coaxially fixedly connected to a second pulley, the left end of the second spline shaft is coaxially fixedly connected to the first pulley, a transmission belt is sleeved between the first pulley and the second pulley; the two ends of the roller are respectively rotatably connected to an arc plate, the arc plate is coaxial with the first screw rod, the surface of the arc plate is respectively coaxially slidably connected to a connecting frame, and the other end of the connecting frame is fixedly connected to one of the cleaning plates.

[0019] Preferably, both ends of the limit plate are respectively provided with vertically arranged pushing grooves, the inside of the pushing grooves are respectively slidably connected with pushing sliders, the upper ends of the pushing sliders are respectively fixedly connected with pushing springs, the other ends of the pushing springs are respectively fixedly connected with the inner walls of the pushing grooves, and one end of the pushing sliders facing the linking plate is respectively fixedly connected with linking pins, and the surface of the linking plate corresponding to the linking pin is provided with connecting grooves, and the linking pins are respectively slidably matched with the connecting grooves.

[0020] Preferably, the surface of the roller is fixedly connected with spirally distributed bristles.

[0021] The present invention has novel structure, ingenious design, simple and convenient operation, and has the following advantages compared with the prior art:

[0022] 1. The device can clean and dredge the screen through the dredging component. When the dredging component is working, it can move left and right on the upper end of the screen driven by the cleaning plate, and the two groups of dredging components move relative to each other, which can achieve the effect of repeated cleaning and improve the dredging effect of the screen;

[0023] 2. When used in practice, the device can control the moving distance of the cleaning plate according to the width of the screen, thereby improving the effect of controlling the cleaning distance of the dredging component, and is suitable for screens of different sizes;

[0024] 3. When the device is clearing the blockage on the screen, not only the cleaning rod moves up and down to dredge the mesh of the screen, but also the screen can be cleared by air flow impact and liquid flushing while the cleaning rod is cleaning. The clearing effect is significant, and the surface of the screen is cleaned by the roller at the same time, which further improves the clearing effect of the screen and prevents the screen from being blocked again due to residual impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic diagram of the overall structure of a device for clearing blockage of a vibrating screen.

[0026] Figure 2 It is a schematic structural diagram of a blockage clearing device of a vibrating screen mesh of the present invention.

[0027] Figure 3 It is a schematic diagram of the installation structure of the first screw rod and the second screw rod of the blockage clearing device of the vibrating screen mesh of the present invention.

[0028] Figure 4 The present invention is a schematic diagram of the installation structure of a cleaning plate of a vibrating screen blockage clearing device.

[0029] Figure 5 It is a schematic diagram of the cooperation structure of the first screw rod, the second screw rod and the cooperation block of the blockage clearing device of the vibrating screen of the present invention.

[0030] Figure 6 The present invention is a schematic diagram of the installation structure of a positioner of a blockage clearing device for a vibrating screen.

[0031] Figure 7 The present invention is a schematic diagram of the structure of a positioner of a blockage clearing device for a vibrating screen.

[0032] Figure 8The present invention is a schematic diagram of the guide groove structure of a blockage clearing device for a vibrating screen.

[0033] Fig. 9 The present invention is a schematic diagram of a transmission cylinder driving structure of a blockage clearing device for a vibrating screen.

[0034] Fig.10 The present invention is a schematic diagram of a swing plate driving structure of a blockage clearing device for a vibrating screen.

[0035] Fig.11 The present invention is a schematic diagram of the drum installation structure of a vibrating screen mesh clearing device.

[0036] Fig.12 The present invention is a schematic diagram of the installation structure of a linkage plate of a blockage clearing device for a vibrating screen.

[0037] Fig.13 The present invention is a schematic diagram of the cooperation structure of a brake plate and a brake tooth block of a blockage clearing device for a vibrating screen.

[0038] Fig.14 This is a first schematic diagram of the structure of the air control equipment of a vibrating screen mesh clearing device of the present invention.

[0039] Fig.15 The present invention is a schematic cross-sectional view of the internal structure of a mounting cylinder of a blockage clearing device for a vibrating screen mesh.

[0040] Fig.16 The present invention is a schematic cross-sectional view of the internal structure of an auxiliary cylinder of a blockage clearing device for a vibrating screen.

[0041] Fig.17 This is a second schematic diagram of the structure of the air control equipment of a vibrating screen mesh clearing device of the present invention.

[0042] Numbers in the figure: 1-mounting plate, 2-electric push rod, 3-roller, 4-first screw rod, 5-second screw rod, 6-first spline shaft, 7-matching block, 8-cleaning plate, 9-reversing gear, 10-connecting pin, 11-spiral groove, 12-limit plate, 13-positioner, 14-fixed screw, 15-fixed knob, 16-outer cylinder, 17-inner cylinder, 18-movable cylinder, 19-storage spring, 20- Pushing cylinder, 21-guide pin, 22-guide groove, 23-push wheel, 24-groove wheel, 25-drive shaft, 26-drive motor, 27-transmission cylinder, 28-first transmission bevel gear, 29-second transmission bevel gear, 30-swing plate, 31-matching pin, 32-matching groove, 33-second spline shaft, 34-connecting frame, 35-arc plate, 36-first pulley, 37-second pulley, 38-linking plate , 39-linking pin, 40-pushing spring, 41-connecting groove, 42-brake plate, 43-brake tooth block, 44-engaging spring, 45-control motor, 46-dredging assembly, 47-installation cylinder, 48-cleaning cylinder, 49-cleaning rod, 51-buffer spring, 52-auxiliary cylinder, 53-piston rod, 54-piston, 55-first one-way valve, 56-second one-way valve, 57-annular tube, 58-conical hole, 59-valve plate, 60-reset spring, 61-valve core, 63-transition cylinder, 64-intake valve, 65-first connecting pipe, 66-first delivery pipe, 67-piston cylinder, 68-rotating plate, 69-hinged rod, 71-piston plate, 72-second connecting pipe, 73-second delivery pipe, 74-first sliding plate, 75-second sliding plate, 76-electric lifting rod, 77-base, 78-connecting rack. DETAILED DESCRIPTION

[0043] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0044] like Figure 1-17As shown, the present invention provides a blockage clearing device for a vibrating screen, comprising a base 77 and an electric lifting rod 76 fixedly connected to the upper end of the base 77, the upper end of the electric lifting rod 76 is equipped with a blockage clearing device that can move forward and backward; the blockage clearing device comprises a mounting plate 1, the front end of the mounting plate 1 is fixedly connected to an electric push rod 2, the front end of the electric push rod 2 is fixedly connected to the upper end of the electric lifting rod 76, the height of the blockage clearing device can be adjusted by controlling the electric lifting rod 76 when the device is in use, and the position of the blockage clearing device can be adjusted by controlling the electric push rod 2, and the adjustment is performed according to the specific position of the screen when in use, and the screen does not need to be disassembled, so that the mounting plate 1 is moved above the screen, and the bottom of the mounting plate 1 is moved. Two relatively movable cleaning plates 8 are respectively connected and slidably connected along the length direction. A plurality of dredging components 46 are installed at the lower end of the cleaning plate 8 along the length direction. The sieve is cleaned and unblocked by the dredging components 46. When the dredging components 46 are working, they can move left and right at the upper end of the sieve driven by the cleaning plate 8, and the two groups of dredging components 46 move relatively to each other, which can achieve the effect of repeated cleaning and improve the dredging effect of the sieve. A control component for controlling the moving distance of the cleaning plate 8 is installed at the rear end of the mounting plate 1. When in use, the control component can be operated to control the moving distance of the cleaning plate 8 according to the width of the sieve, thereby improving the effect of controlling the cleaning distance of the dredging components 46, which is suitable for sieves of different sizes.

[0045] The dredging assembly 46 includes a cleaning cylinder 48 and a mounting cylinder 47 slidably connected to the surface of the cleaning cylinder 48. The mounting cylinders 47 are fixedly connected to the corresponding cleaning plates 8, and the upper end of the mounting plate 1 is installed with a gas control device for controlling the reciprocating movement of the cleaning cylinder 48. The upper end of the mounting cylinder 47 is connected to the gas control device, and the cleaning cylinder 48 is driven to reciprocate up and down by operating the gas control device. The vibration force generated when the cleaning cylinder 48 moves up and down acts on the surface of the screen, which has the effect of clearing the blockage of the screen.

[0046] Furthermore, in order to improve the effect of clearing the blockage of the screen, a plurality of annularly distributed auxiliary cylinders 52 are fixedly connected to the surface of the mounting cylinder 47, and pistons 54 are slidably connected to the inside of the auxiliary cylinders 52 along the axial direction. The lower ends of the pistons 54 are fixedly connected to piston rods 53, and the lower ends of the piston rods 53 are fixedly connected to the cleaning cylinders 48. When the cleaning cylinders 48 move up and down, the pistons 54 can be driven to move up and down synchronously under the linkage action of the piston rods 53.

[0047] The upper end of the mounting plate 1 is fixedly connected to a transition tube 63, the upper ends of the annular auxiliary tubes 52 are fixedly connected together and connected to an annular tube 57, and the upper ends of the annular tubes 57 are fixedly connected and connected to connecting tubes. Fig.17As shown, the upper ends of the connecting pipes arranged in the same transverse direction are commonly fixedly connected with a first connecting pipe 65, and the other ends of the first connecting pipes 65 are respectively fixedly connected with first delivery pipes 66, and the other ends of the first delivery pipes 66 are fixedly connected and communicated with the transition cylinder 63, so that the upper ends of the auxiliary cylinders 52 are respectively communicated with the transition cylinders 63, and the upper end of the piston 54 is downwardly provided with a through hole, so that the upper and lower ends of the piston 54 are connected, and the upper end of the piston rod 53 is provided with notches on both sides. Similarly, in order to connect the upper and lower ends of the piston 54, a first one-way valve 55 that can only intake air in one direction is fixedly connected in the through hole, and the upper end interface of the auxiliary cylinder 52 is fixedly A second one-way valve 56 that can only take in air in one direction is fixedly connected, and a valve plate 59 that moves up and down is slidably connected inside the first one-way valve 55 and the second one-way valve 56, respectively. A valve core 61 is fixedly connected to the upper end of the valve plate 59, and the upper end openings of the first one-way valve 55 and the second one-way valve 56 are blocked by the internal valve core 61, respectively. A return spring 60 is fixedly connected to the lower end of the valve plate 59, and the lower end of the return spring 60 presses against the lower end openings of the first one-way valve 55 and the second one-way valve 56, respectively. The circumferential surface of the valve plate 59 is provided with valve holes distributed in an annular shape, and the valve holes are used to connect the upper and lower sides of the valve plate 59;

[0048] like Fig.15 and Fig.16 As shown, since the valve cores 61 inside the first one-way valve 55 and the second one-way valve 56 are both blocked by the upper end openings under the push of the return spring 60, the first one-way valve 55 and the second one-way valve 56 can only take in air in one direction but cannot let out air. Therefore, when the piston 54 moves downward with the cleaning cylinder 48, the lower end of the first one-way valve 55 is subjected to the reverse thrust of the gas, so the first one-way valve 55 is in a closed state. The negative pressure suction force generated between the piston 54 and the auxiliary cylinder 52 during the movement can attract the valve core 61 inside the second one-way valve 56 to overcome the resistance of the return spring 60. The piston 54 moves downward, so that the gas inside the transition cylinder 63 enters into the auxiliary cylinder 52. When the piston 54 moves upward along with the cleaning cylinder 48, the negative pressure between the piston 54 and the auxiliary cylinder 52 disappears, and the valve core 61 inside the second one-way valve 56 is reset under the push of the reset spring 60, and the second one-way valve 56 is closed. When the piston 54 moves upward, the valve core 61 inside the first one-way valve 55 can be pushed by the reverse thrust of the gas inside the auxiliary cylinder 52 to overcome the resistance of the reset spring 60 and move downward, so that the gas inside the auxiliary cylinder 52 is ejected downward through the first one-way valve 55.

[0049] The bottom of the auxiliary cylinder 52 is provided with a plurality of conical holes 58 distributed in an annular pattern. Fig.16As shown, the gas will pass through the tapered hole 58 when it is ejected downward. The upper opening of the tapered hole 58 is larger than the lower opening. When the gas pressure passes through the lower opening of the tapered hole 58, the gas flow rate will be increased accordingly due to the reduction in the diameter, and the internal air pressure of the auxiliary cylinder 52 will be increased, so that the airflow through the tapered hole 58 can strongly impact the surface of the screen, and the screen is unblocked by the strong airflow, further improving the unblocking effect of the screen. When other additives or chemicals in the drilling fluid cover the surface of the screen, making it difficult to clean, an acid volume can also be added to the transition cylinder 63. When the piston 54 is sucking, the acid solvent inside the transition cylinder 63 can be extracted and sprayed onto the surface of the screen, further improving the unblocking effect of the screen.

[0050] An intake valve 64 that can only take in air in one direction is fixedly connected to the right end opening of the transition tube 63. The structure of the intake valve 64 is the same as that of the first one-way valve 55 and the second one-way valve 56. The internal valve core 61 blocks the right end opening of the intake valve 64 and can only move in one direction toward the inside of the intake valve 64. When the auxiliary tube 52 sucks the gas inside the transition tube 63, the negative pressure generated in the transition tube 63 can attract the intake valve 64 to open, allowing external gas to enter the transition tube 63 through the intake valve 64, and when an acidic solvent is added to the interior of the transition tube 63, the acidic solvent can also push the valve core 61 inside the intake valve 64 to open the intake valve 64, which does not affect the acidic solvent from entering the transition tube 63 and can prevent the acidic solvent inside the transition tube 63 from flowing out.

[0051] In order to further improve the cleaning effect of the screen, a sliding hole is provided at the lower end of the cleaning cylinder 48, and a cleaning rod 49 that moves up and down is slidably connected inside the sliding hole, and the bottom of the cleaning rod 49 is a conical structure with the tip facing downward; a spring baffle is coaxially fixedly connected to the upper end of the cleaning rod 49, and the spring baffle is slidably connected to the inner wall of the cleaning cylinder 48, and buffer springs 51 are respectively provided at the upper and lower ends of the spring baffle, and the tip of the bottom of the cleaning rod 49 can enter the mesh of the screen, which is convenient for dredging the impurities in the mesh, and when the cleaning rod 49 is subjected to resistance, it can move upward accordingly to reduce part of the impact force and avoid damage to the mesh, and the buffer spring 51 at the upper end of the spring baffle can play a buffering and pushing effect to ensure the cleaning effect of the cleaning rod 49, and when the upper end buffer spring 51 is compressed and pushes the cleaning rod 49 to move downward, it will also cause a squeezing effect on the lower side reset spring 60, so that the cleaning rod 49 produces an up and down vibration effect under the elastic force of the upper and lower buffer springs 51, further improving the cleaning efficiency of the mesh of the screen.

[0052] The pneumatic control device includes a piston assembly installed on the upper end of the mounting plate 1, and a rotating plate 68 is provided on the upper side of the piston assembly. The rotating plate 68 is rotatably connected to the mounting plate 1, and a hinged rod 69 is hinged at a non-center position on the lower end of the rotating plate 68, and the other end of the hinged rod 69 is hinged to the movable end of the piston assembly; the piston assembly includes a piston cylinder 67 fixedly connected to the upper end of the mounting plate 1, and a piston plate 71 that moves along the axial direction of the piston cylinder 67 is slidably connected inside the piston cylinder 67, and a reciprocating rod is fixedly connected to the left end of the piston plate 71, and the other end of the reciprocating rod is slidably connected to the left end of the piston cylinder 67, and a plurality of limiting grooves distributed in an annular shape are provided on the surface of the reciprocating rod, and a plurality of limiting protrusions that slidably cooperate with the limiting grooves are provided on the inner side of the left end opening of the piston cylinder 67, and the reciprocating rod can only move axially under the sliding cooperation between the limiting protrusions and the limiting grooves; One end of the reciprocating rod away from the piston plate 71 is fixedly connected to a matching plate, and the other end of the hinged rod 69 is hinged to the upper end of the matching plate. When the rotating plate 68 rotates, the reciprocating rod can be driven to reciprocate through the linkage of the hinged rod 69, thereby driving the piston plate 71 to reciprocate; the upper ends of the mounting cylinders 47 belonging to the same dredging component 46 are commonly fixedly connected and connected to a second connecting pipe 72, and the surfaces corresponding to the mounting plate 1 and the mounting cylinder 47 are respectively provided with strip holes along the length direction, which are used to facilitate the connection between the mounting cylinder 47 and the second connecting pipe 72 and to facilitate the movement of the mounting cylinder 47; the right end of the second connecting pipe 72 is respectively fixedly connected and connected to a second delivery pipe 73, and the other end of the second delivery pipe 73 is respectively fixedly connected and connected to the gas delivery end of the piston assembly, and the right end of the piston cylinder 67 is provided with an opening, which is fixedly connected to the second delivery pipe 73 as the gas delivery end;

[0053] When the piston plate 71 moves inward, a pushing effect can be generated, pushing the gas into the mounting cylinder 47, and then pushing the cleaning cylinder 48 downward under the action of pneumatic movement. When the piston plate 71 moves outward, a suction effect is generated, extracting the gas inside the mounting cylinder 47, and then driving the cleaning cylinder 48 to move upward under the action of pneumatic movement, forming an effect of controlling the cleaning cylinder 48 to repeatedly move up and down to clean the screen under the rotation of the rotating plate 68; a control motor 45 is provided on the upper side of the rotating plate 68, the control motor 45 is fixedly connected to the mounting plate 1, and the output end of the control motor 45 is fixedly connected to the rotating plate 68, and the control motor 45 is used to drive the rotating plate 68 to rotate, so as to facilitate the control of the cleaning cylinder 48 to move up and down to clean the screen.

[0054] like Figure 3-Figure 5As shown, the control component includes two first and second screw rods 4 and 5 arranged up and down, the first and second screw rods 4 and 5 are respectively rotatably connected to the mounting plate 1, the surfaces of the first and second screw rods 4 and 5 are respectively provided with spiral grooves 11, a matching block 7 is slidably matched between the first and second screw rods 4 and 5, and the upper and lower ends of the matching block 7 are respectively provided with arc surfaces coaxially matched with the first and second screw rods 4 and 5, so that the upper and lower ends of the matching block 7 are convenient for slidingly matching with the first and second screw rods 4 and 5, so that the matching block 7 can move axially along the first and second screw rods 4 and 5; the upper and lower ends of the matching block 7 are respectively fixedly connected with connecting pins 10, and the connecting pins 10 are respectively slidably connected with the corresponding spiral grooves 11, and the right ends of the first and second screw rods 4 and 5 are provided with driving components that drive the first and second screw rods 4 and 5 to actively rotate. , driven by the driving component, the first spiral rod 4 and the second spiral rod 5 rotate in opposite directions, so that the first spiral rod 4 and the second spiral rod 5 can drive the matching block 7 to move left and right when they are actively rotated respectively; the lower end of the matching block 7 is fixedly connected to one of the cleaning plates 8, and the corresponding ends of the two cleaning plates 8 are respectively fixedly connected with connecting racks 78, and a reversing gear 9 is meshed between the two connecting racks 78. The reversing gear 9 is rotatably connected to the mounting plate 1. Under the meshing of the reversing gear 9 and the two connecting racks 78, when one of the cleaning plates 8 moves, the other cleaning plate 8 can move synchronously in the opposite direction, forming two groups of dredging components 46 that can move synchronously relative to each other to clean the screen, thereby achieving the effect of repeatedly cleaning the screen, and by controlling the active rotation time of the first spiral rod 4 and the second spiral rod 5 respectively, the moving distance of the matching block 7 can be controlled, which can be controlled according to the size of the screen when in use.

[0055] Furthermore, if Fig. 9 As shown, in order to facilitate the control of the first screw rod 4 and the second screw rod 5 to actively rotate respectively, and then respectively drive the matching block 7 to move, the driving component includes a vertically arranged driving shaft 25 located at the right end of the first screw rod 4 and the second screw rod 5, the driving shaft 25 is rotatably connected to the mounting plate 1, and a driving motor 26 is arranged on the lower side of the driving shaft 25, the output end of the driving motor 26 is coaxially fixedly connected to the driving shaft 25, the driving motor 26 is fixedly connected to the bottom of the mounting plate 1, the driving motor 26 is used to control the driving shaft 25 to rotate, and the driving shaft 25 can provide power to the first screw rod 4 and the second screw rod 5 respectively;

[0056] The surface of the driving shaft 25 is spline-connected with a transmission cylinder 27 that can move up and down. Under the action of the spline connection, the transmission cylinder 27 can not only move axially on the surface of the driving shaft 25, but also drive the transmission cylinder 27 to rotate when the driving shaft 25 rotates, without affecting the transmission effect; the upper and lower ends of the transmission cylinder 27 are respectively coaxially fixedly connected with the first transmission bevel gear 28, and the right ends of the first screw rod 4 and the second screw rod 5 are respectively coaxially fixedly connected with the second transmission bevel gear 29 that can mesh with the first transmission bevel gear 28. When in use, the transmission cylinder 27 can be controlled to move up and down. When the transmission cylinder 27 moves up and down, the first screw rod 4 and the second screw rod 5 are respectively driven to rotate in opposite directions through the meshing of the first transmission bevel gear 28 and the second transmission bevel gear 29.

[0057] Furthermore, in order to facilitate the user to control the range of left and right movement of the dredging component 46 according to the width of the screen, a first spline shaft 6 is provided between the first spiral rod 4 and the second spiral rod 5, and a receiving hole is provided on the surface of the matching block 7 along the axial direction of the first spline shaft 6, and the first spline shaft 6 passes through the receiving hole and the two ends of the first spline shaft 6 are respectively rotatably connected to the mounting plate 1; Fig.10 As shown, the right end of the first spline shaft 6 is coaxially fixedly connected with a thumbwheel 23, the front side of the thumbwheel 23 is meshed with a groove wheel 24, the groove wheel 24 is rotatably connected to the mounting plate 1, the thumbwheel 23 and the groove wheel 24 form a 90-degree groove wheel 24 mechanism, the front end of the groove wheel 24 is coaxially fixedly connected with a swing plate 30, the surface of the swing plate 30 is provided with a matching groove 32 along the length direction, the surface of the transmission cylinder 27 is rotatably connected with an annular sleeve, the annular sleeve is vertically slidably connected to the surface of the mounting plate 1, the surface of the annular sleeve is fixedly connected with a matching pin shaft 31, the matching pin shaft 31 is slidably matched with the matching groove 32, and the axial movement of the transmission cylinder 27 is controlled under the swing of the swing plate 30 without affecting the rotation of the transmission cylinder 27;

[0058] Positioners 13 capable of adjusting positions are respectively installed on both sides of the surface of the first spline shaft 6, and a limited plate 12 is arranged on the rear side of the first spline shaft 6. The limited plate 12 is fixedly connected to the mounting plate 1, and the positioner 13 is detachably connected to the limited plate 12. When the positioner 13 is connected to the limited plate 12, the positioner 13 cannot be displaced. By controlling the spacing between the two positioners 13, the farthest moving position of the dredging component 46 can be set, which can be set according to the width of the screen. When the matching block 7 contacts and pushes the positioner 13 during the movement, the first spline shaft 6 can be driven to rotate, and when the matching block 7 pushes the positioner 13, the dial wheel 23 can be driven to rotate. When the locators 13 on both sides are pushed respectively, the rotation direction of the dial wheel 23 is opposite. When the matching block 7 moves in the opposite direction and pushes the other locator 13, the first spline shaft 6 can be driven to reverse, and the dial wheel 23 can be driven to reverse one circle, so that the groove wheel 24 rotates ninety degrees in the opposite direction, and the swing plate 30 is controlled to rotate in the opposite direction once. Each swing of the swing plate 30 can drive the transmission cylinder 27 to move once, so that the first transmission bevel gear 28 and the second transmission bevel gear 29 are meshed, which has the effect of driving the first screw rod 4 and the second screw rod 5 to rotate respectively.

[0059] like Figure 6-Figure 9 As shown, in order to further facilitate the user, the moving distance of the dredging component 46 can be determined in advance according to the width of the screen, which is convenient for the user to operate; the positioner 13 includes an outer cylinder 16 and an inner cylinder 17 fixedly connected to the inner part of the outer cylinder 16, the inner cylinder 17 is spline-connected to the first spline shaft 6, and a partition is arranged between the outer cylinder 16 and the inner cylinder 17, and the inner ends of the partitions are respectively slidably connected with movable cylinders 18 coaxially, and the inner walls of the partitions are respectively provided with guide grooves 22 with a spiral circle, and the surfaces of the movable cylinders 18 are respectively fixedly connected with guide pins 21, The guide pins 21 are slidably connected with the guide grooves 22, and the spiral directions of the two guide grooves 22 are the same. When the guide pins 21 move to the left, the inner cylinder 17 is driven to rotate forward, and when the guide pins 21 move to the right, the inner cylinder 17 can be driven to reverse. Therefore, when the movable cylinder 18 on the left moves to the left, the first spline shaft 6 is driven to rotate forward for one circle under the sliding cooperation between the guide pins 21 and the guide grooves 22, and when the movable cylinder 18 on the right moves to the right, the first spline shaft 6 is driven to reverse for one circle under the sliding cooperation between the guide pins 21 and the guide grooves 22.

[0060] The inner ends of the two movable cylinders 18 are respectively provided with accommodating grooves axially outward, and the interiors of the accommodating grooves are respectively sleeved with storage springs 19. The inner ends of the accommodating grooves are respectively slidably connected with pushing cylinders 20 that can only move along the axial direction of the accommodating grooves, and the surfaces of the pushing cylinders 20 are respectively fixedly connected with first sliding plates 74, and the surfaces of the outer cylinder 16 are respectively rotatably connected with second sliding plates 75. The first sliding plates 74 are respectively slidably connected with the second sliding plates 75, and the front ends of the second sliding plates 75 are respectively fixedly connected with fixing screws 14. The surface of the limit plate 12 is provided with limiting grooves along the length direction, and the fixing screws 14 respectively pass through the limiting grooves and the rear ends of the fixing screws 14 are respectively threadedly connected with fixing knobs 15. The fixing knobs 15 are located at the rear end of the limit plate 12. When the fixing knobs 15 are rotated, the second sliding plate 75 can be fixed to the surface of the limit plate 12 through the action of the threaded connection with the fixing screws 14, thereby making the outer cylinder 16 unable to move, but without affecting the rotation;

[0061] One end surface of the thumbwheel 23 is coaxially fixedly connected with a brake plate 42, a tooth groove is provided on the circumferential surface of the brake plate 42, and a mounting groove is provided on the surface of the stop plate 12 at the rear side of the brake plate 42 along the radial direction of the brake plate 42, and a brake tooth block 43 is slidably connected inside the mounting groove, and one end of the brake tooth block 43 is meshed with the tooth groove, such as Fig.13 As shown, the upper and lower ends of the brake tooth block 43 are inclined surfaces inclined inwardly, and the upper and lower ends of the tooth groove are also inclined surfaces inclined inwardly. The other end of the brake tooth block 43 is fixedly connected with an engagement spring 44, and the other end of the engagement spring 44 is fixedly connected to the inner wall of the mounting groove. When the brake tooth block 43 is engaged with the tooth groove, the engagement spring 44 provides resistance to the movement of the brake tooth block 43 and keeps the brake tooth block 43 engaged with the brake tooth groove. When the brake plate 42 is subjected to force, the resistance of the engagement spring 44 needs to be overcome to disengage the brake tooth block 43 from the tooth groove, so that the thumbwheel 23 rotates.

[0062] When the push cylinder 20 is pushed by the matching block 7, the push cylinder 20 can only move axially under the action of the sliding connection between the first sliding plate 74 and the second sliding plate 75. Therefore, when the push cylinder 20 is pushed by the matching block 7 and moves toward the movable cylinder 18, the first spline shaft 6 cannot rotate temporarily due to the meshing of the braking tooth block 43 and the tooth groove and the resistance of the meshing spring 44. Therefore, the movable cylinder 18 will not move synchronously under the push of the push cylinder 20. The push cylinder 20 will squeeze the storage spring 19 when moving. As the thrust of the matching block 7 gradually increases, the thrust of the push cylinder 20 also increases. When the thrust is greater than the elastic force of the meshing spring 44, the elastic force of the meshing spring 44 can be overcome, so that the brake tooth block 43 is disengaged from the tooth groove, and the thumbwheel 23 resumes rotation, and then the elastic force of the force storage spring 19 is released, and the force storage spring 19 provides a driving force to push the movable cylinder 18 to move quickly outward. When the movable cylinder 18 moves, the guide pin 21 engages with the guide groove 22 to drive the first spline shaft 6 to rotate, and then drives the thumbwheel 23 to rotate one circle, so as to achieve the effect of controlling the axial movement of the transmission cylinder 27, and controlling the first screw rod 4 and the second screw to rotate respectively to drive the matching block 7;

[0063] The fixing effect of the locator 13 can be released by rotating the fixing knob 15. During specific use, the position of the locator 13 can be controlled as needed, and the locator 13 can be fixed by rotating the fixing knob 15, so that the moving distance of the clearing component 46 can be determined as needed, which is convenient for users to operate.

[0064] like Fig.11 As shown, the two ends of the first screw rod 4 are respectively rotatably connected to a linkage plate 38, and the other end of the linkage plate 38 is rotatably connected to a second spline shaft 33. The surface of the second spline shaft 33 is spline-connected to a roller 3, and the roller 3 is in contact with the surface of the screen. When rotating, the surface of the screen can be cleaned to improve the cleaning effect of the screen; the left end of the first screw rod 4 is coaxially fixedly connected to a second pulley 37, and the left end of the second spline shaft 33 is coaxially fixedly connected to a first pulley 36, and the first pulley 36 and the second pulley 37 are sleeved. A transmission belt can drive the second spline shaft 33 to rotate through the first pulley 36, the second pulley 37 and the transmission belt when the first spiral rod 4 rotates, thereby driving the drum 3 to rotate. When the connecting pin 10 is engaged with the spiral groove 11, the first spiral rod 4 will rotate as long as the matching block 7 is moving. Therefore, when the matching block 7 moves left and right, the drum 3 can rotate to clean the surface of the screen, thereby ensuring the cleaning efficiency of the drum 3 and the screen. Furthermore, in order to improve the cleaning effect of the drum 3 on the surface of the screen, as shown in FIG. Fig.11As shown, both ends of the drum 3 are rotatably connected with arc plates 35, the arc plates 35 are coaxial with the first spiral rod 4, and the surfaces of the arc plates 35 are slidably connected with connecting frames 34 coaxially, and the other ends of the connecting frames 34 are fixedly connected to one of the cleaning plates 8. Under the action of the sliding connection between the connecting frame 34 and the arc plates 35, the drum 3 and the cleaning plates 8 can be moved synchronously, and the connection is not affected when the drum 3 is turned over. When the cleaning plate 8 moves left and right, it can drive the drum 3 to move left and right while rotating, thereby achieving the effect of rubbing the screen plane left and right, further improving the cleaning effect.

[0065] Furthermore, in order to improve the cleaning effect of the roller 3 on the screen, the two ends of the limit plate 12 are respectively provided with vertically arranged pushing slide grooves, and the inside of the pushing slide grooves is slidably connected with pushing sliders, and the upper ends of the pushing sliders are respectively fixedly connected with pushing springs 40, and the other ends of the pushing springs 40 are respectively fixedly connected to the inner walls of the pushing slide grooves. Under the push of the pushing springs 40, the pushing sliders have a pushing force to push downward, and the pushing sliders are respectively fixedly connected with linkage pins 39 at one end toward the linkage plate 38, and the surface of the linkage plate 38 corresponding to the linkage pin 39 is provided with connecting grooves 41, and the linkage pins 39 are respectively slidably matched with the connecting grooves 41. Under the sliding cooperation between the linkage pins 39 and the connecting grooves 41, the pushing force of the pushing springs 40 can act on the lower linkage frame, so that the linkage frame has a downward swinging force, thereby driving the roller 3 to press against the surface of the screen, thereby increasing the pressure on the screen, thereby improving the cleaning effect. The cleaning effect of the roller 3 is improved; further, in order to improve the cleaning effect of the roller 3, the surface of the roller 3 is fixedly connected with bristles distributed in a spiral shape, the bristles are used to improve the cleaning effect of the screen, and the spiral effect formed during rotation can push the impurities on the surface of the screen to the outside, so that the impurities no longer stay on the surface of the screen, further improving the cleaning effect of the screen, so that when the device is clearing the blockage of the screen, not only the mesh of the screen is dredged by moving the cleaning rod 49 up and down, but also the screen can be dredged by air flow impact and liquid flushing while the cleaning rod 49 is cleaning, and the screen surface is cleaned by the roller 3 while dredging, further improving the clearing effect of the screen, avoiding the screen from being blocked again due to residual impurities, simple operation, and the moving distance of the dredging component 46 can be adjusted according to the width of the screen, with a wide range of applications and diverse functions.

[0066] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A device for clearing blockage of a vibrating screen, comprising a base (77) and an electric lifting rod (76) fixedly connected to the upper end of the base (77), characterized in that: The upper end of the electric lifting rod (76) is equipped with a blockage clearing device capable of moving forward and backward; The blockage clearing device comprises a mounting plate (1), the bottom of the mounting plate (1) being slidably connected to two relatively movable cleaning plates (8) in the length direction, the lower end of the cleaning plate (8) being mounted with a plurality of groups of dredging components (46) in the length direction, and a control component for controlling the moving distance of the cleaning plate (8) being mounted at the rear end of the mounting plate (1); The dredging assembly (46) comprises a cleaning cylinder (48) and a mounting cylinder (47) slidably connected to the surface of the cleaning cylinder (48); the mounting cylinders (47) are fixedly connected to corresponding cleaning plates (8) respectively; an air control device for controlling the reciprocating movement of the cleaning cylinder (48) is mounted on the upper end of the mounting plate (1); and the upper end of the mounting cylinder (47) is connected to the air control device respectively; The pneumatic control device comprises a piston assembly mounted on the upper end of a mounting plate (1); a rotating plate (68) is arranged on the upper side of the piston assembly, the rotating plate (68) is rotatably connected to the mounting plate (1); a hinged rod (69) is hingedly connected to the lower end of the rotating plate (68) at a non-central position, and the other end of the hinged rod (69) is hingedly connected to the movable end of the piston assembly; a control motor (45) is arranged on the upper side of the rotating plate (68), the control motor (45) is fixedly connected to the mounting plate (1), and the output end of the control motor (45) is fixedly connected to the rotating plate (68); The upper ends of the mounting cylinders (47) belonging to the same dredging assembly (46) are fixedly connected to and communicated with a second connecting pipe (72), the right ends of the second connecting pipes (72) are respectively fixedly connected to and communicated with a second delivery pipe (73), and the other ends of the second delivery pipes (73) are respectively fixedly connected to and communicated with the gas delivery ends of the piston assemblies; A plurality of annularly distributed auxiliary cylinders (52) are fixedly connected to the surface of the mounting cylinder (47), and pistons (54) are slidably connected to the interior of the auxiliary cylinders (52) in the axial direction. The lower ends of the pistons (54) are fixedly connected to piston rods (53), and the lower ends of the piston rods (53) are fixedly connected to the cleaning cylinders (48). A transition cylinder (63) is fixedly connected to the upper end of the mounting plate (1), and the upper ends of the auxiliary cylinders (52) are connected to the transition cylinders (63). A through hole is provided downwardly at the upper end of the piston (54) so ​​that the upper and lower ends of the piston (54) are connected. A first one-way valve (55) that can only allow one-way air intake is fixedly connected in the through hole. A second one-way valve (56) that can only allow one-way air intake is fixedly connected to the upper end interface of the auxiliary cylinder (52), and a plurality of annularly distributed conical holes (58) are provided at the bottom of the auxiliary cylinder (52).

2. A vibrating screen mesh clearing device as claimed in claim 1, characterized in that: A sliding hole is formed at the lower end of the cleaning cylinder (48), and a cleaning rod (49) that moves up and down is slidably connected to the inner side of the sliding hole. The bottom of the cleaning rod (49) is a conical structure with the tip facing downward. A spring baffle is coaxially fixedly connected to the upper end of the cleaning rod (49). The spring baffle is slidably connected to the inner wall of the cleaning cylinder (48), and buffer springs (51) are respectively provided at the upper and lower ends of the spring baffle.

3. A vibrating screen mesh clearing device as claimed in claim 1, characterized in that: The control component comprises a first screw rod (4) and a second screw rod (5) arranged vertically, the first screw rod (4) and the second screw rod (5) are respectively rotatably connected to the mounting plate (1), the surfaces of the first screw rod (4) and the second screw rod (5) are respectively provided with a spiral groove (11), a matching block (7) is slidably matched between the first screw rod (4) and the second screw rod (5), the upper and lower ends of the matching block (7) are respectively fixedly connected with connecting pins (10), and the connecting pins (10) are respectively slidably connected to the corresponding spiral grooves (11), The right ends of the first screw rod (4) and the second screw rod (5) are provided with driving components for driving the first screw rod (4) and the second screw rod (5) to rotate respectively. Under the drive of the driving components, the first screw rod (4) and the second screw rod (5) rotate in opposite directions. The lower end of the matching block (7) is fixedly connected to one of the cleaning plates (8). The corresponding ends of the two cleaning plates (8) are respectively fixedly connected to connecting racks (78). A reversing gear (9) is meshed between the two connecting racks (78). The reversing gear (9) is rotatably connected to the mounting plate (1).

4. A vibrating screen mesh clearing device as claimed in claim 3, characterized in that: The driving component comprises a vertically arranged driving shaft (25) located at the right end of the first screw rod (4) and the second screw rod (5); a driving motor (26) is arranged on the lower side of the driving shaft (25); the output end of the driving motor (26) is coaxially fixedly connected to the driving shaft (25); a transmission cylinder (27) capable of moving up and down is spline-connected on the surface of the driving shaft (25); the upper and lower ends of the transmission cylinder (27) are coaxially fixedly connected to the first transmission bevel gear (28); the right ends of the first screw rod (4) and the second screw rod (5) are coaxially fixedly connected to the second transmission bevel gear (29) capable of meshing with the first transmission bevel gear (28); when the transmission cylinder (27) moves up and down, the first screw rod (4) and the second screw rod (5) are respectively driven to rotate by the meshing of the first transmission bevel gear (28) and the second transmission bevel gear (29).

5. A vibrating screen mesh clearing device as claimed in claim 4, characterized in that: A first spline shaft (6) is arranged between the first screw rod (4) and the second screw rod (5); a receiving hole is provided on the surface of the matching block (7) along the axial direction of the first spline shaft (6); the first spline shaft (6) passes through the receiving hole and the two ends of the first spline shaft (6) are respectively rotatably connected to the mounting plate (1); a thumbwheel (23) is coaxially fixedly connected to the right end of the first spline shaft (6); a groove wheel (24) is meshed with the front side of the thumbwheel (23); the groove wheel (24) is rotatably connected to the mounting plate (1); a swing plate (30) is coaxially fixedly connected to the front end of the groove wheel (24); a matching groove (32) is provided on the surface of the swing plate (30) along the length direction; an annular sleeve is rotatably connected to the surface of the transmission cylinder (27); the annular sleeve is vertically slidably connected to the surface of the mounting plate (1); a matching pin shaft (31) is fixedly connected to the surface of the annular sleeve; the matching pin shaft (31) is slidably matched with the matching groove (32) to control the axial movement of the transmission cylinder (27) under the swing of the swing plate (30); Positioners (13) capable of adjusting positions are respectively installed on both sides of the surface of the first spline shaft (6); a limit plate (12) is arranged on the rear side of the first spline shaft (6); the limit plate (12) is fixedly connected to the mounting plate (1); the positioner (13) and the limit plate (12) are detachably connected; when the matching block (7) pushes the positioner (13), the thumbwheel (23) can be driven to rotate one circle; and when the positioners (13) on both sides are pushed respectively, the thumbwheel (23) rotates in opposite directions.

6. A vibrating screen mesh clearing device as claimed in claim 5, characterized in that: The positioner (13) comprises an outer cylinder (16) and an inner cylinder (17) fixedly connected to the inner part of the outer cylinder (16), the inner cylinder (17) being spline-connected to the first spline shaft (6), a partition is provided between the outer cylinder (16) and the inner cylinder (17), the inner ends of the partitions are respectively slidably connected to movable cylinders (18) coaxially, the inner walls of the partitions are respectively provided with guide grooves (22) of one spiral circle, the surfaces of the movable cylinders (18) are respectively fixedly connected to guide pins (21), the guide pins (21) are respectively slidably connected to the guide grooves (22), when the movable cylinder (18) on the left side moves to the left side, the first spline shaft (6) is driven to rotate forward one circle under the sliding cooperation between the guide pin (21) and the guide groove (22), when the movable cylinder (18) on the right side moves to the right side, the first spline shaft (6) is driven to rotate forward one circle under the sliding cooperation between the guide pin (21) and the guide groove (22), ) is reversed one circle; the inner ends of the two movable cylinders (18) are respectively provided with receiving grooves axially outward, the interiors of the receiving grooves are respectively sleeved with storage springs (19), the inner ends of the receiving grooves are respectively slidably connected with push cylinders (20) that can only move along the axial direction of the receiving grooves, the surfaces of the push cylinders (20) are respectively fixedly connected with first sliding plates (74), the surfaces of the outer cylinders (16) are respectively rotatably connected with second sliding plates (75), the first sliding plates (74) are respectively slidably connected with the second sliding plates (75), the front ends of the second sliding plates (75) are respectively fixedly connected with fixed screws (14), the surface of the limit plate (12) is provided with limiting grooves along the length direction, the fixed screws (14) respectively pass through the limiting grooves and the rear ends of the fixed screws (14) are respectively threadedly connected with fixed knobs (15), and the fixed knobs (15) are located at the rear ends of the limit plates (12); One end surface of the thumbwheel (23) is coaxially fixedly connected to a brake plate (42), a tooth groove is provided on the circumferential surface of the brake plate (42), a mounting groove is provided on the surface of the stop plate (12) at the rear side of the brake plate (42) along the radial direction of the brake plate (42), a brake tooth block (43) is slidably connected inside the mounting groove, one end of the brake tooth block (43) is meshed with the tooth groove, the other end of the brake tooth block (43) is fixedly connected to an engagement spring (44), and the other end of the engagement spring (44) is fixedly connected to the inner wall of the mounting groove.

7. A vibrating screen mesh clearing device as claimed in claim 5, characterized in that: The two ends of the first screw rod (4) are respectively rotatably connected to a linkage plate (38), the other end of the linkage plate (38) is jointly rotatably connected to a second spline shaft (33), the surface of the second spline shaft (33) is spline-connected to a roller (3), the left end of the first screw rod (4) is coaxially fixedly connected to a second pulley (37), the left end of the second spline shaft (33) is coaxially fixedly connected to a first pulley (36), a transmission belt is sleeved between the first pulley (36) and the second pulley (37); the two ends of the roller (3) are respectively rotatably connected to an arc plate (35), the arc plate (35) is coaxial with the first screw rod (4), the surface of the arc plate (35) is coaxially slidably connected to a connecting frame (34), and the other end of the connecting frame (34) is fixedly connected to one of the cleaning plates (8).

8. A vibrating screen mesh clearing device as claimed in claim 7, characterized in that: The two ends of the limit plate (12) are respectively provided with vertically arranged push slide grooves, the interior of the push slide grooves are respectively slidably connected with push sliders, the upper ends of the push sliders are respectively fixedly connected with push springs (40), the other ends of the push springs (40) are respectively fixedly connected with the inner walls of the push slide grooves, and the ends of the push sliders facing the linkage plate (38) are respectively fixedly connected with linkage pins (39), and the surface of the linkage plate (38) corresponding to the linkage pins (39) is provided with connection grooves (41), and the linkage pins (39) are respectively slidably matched with the connection grooves (41).

9. A vibrating screen mesh clearing device as claimed in claim 7, characterized in that: Spirally distributed bristles are fixedly connected to the surface of the roller (3).

Images