CN113731795A - Vibrating screen - Google Patents
Vibrating screen Download PDFInfo
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- CN113731795A CN113731795A CN202111095011.9A CN202111095011A CN113731795A CN 113731795 A CN113731795 A CN 113731795A CN 202111095011 A CN202111095011 A CN 202111095011A CN 113731795 A CN113731795 A CN 113731795A
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- Prior art keywords
- screen
- rubber roller
- screen mesh
- gear
- support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/48—Stretching devices for screens
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Abstract
The application discloses shale shaker belongs to the mechanical equipment field, has solved shale shaker screen cloth and has compressed tightly that the cost of labor is high, compress tightly insecure problem. Comprises a screen box, a screen tensioning mechanism, a screen support and a screen pressing mechanism. A screen inlet is provided on the first side of the screen box. The screen mesh support is arranged in the inner cavity of the screen box, two sides of the screen mesh support parallel to the feeding direction of the screen mesh are respectively fixed with the second side face and the third side face of the screen box, and the second side face and the third side face are adjacent to the first side face. The position of the screen inlet end of the screen mesh support corresponds to the screen mesh inlet. The screen mesh hold-down mechanism is arranged above the screen mesh support, and two sides of the screen mesh hold-down mechanism are respectively arranged on the second side surface and the third side surface of the screen box, and is used for providing pressing force for pressing down the screen mesh after the screen mesh is laid on the placing surface of the screen mesh support. The screen cloth straining device sets up in the end of screen cloth net support for after the screen cloth is laid to the plane of placing of screen cloth net support, compress tightly the tip of the terminal corresponding screen cloth. This application cost of labor is low, compresses tightly effectually.
Description
Technical Field
The application relates to the technical field of mechanical equipment, in particular to a vibrating screen.
Background
The vibrating screen utilizes the vibration exciting principle of a vibrating motor to throw materials on a screen surface and simultaneously moves forwards linearly to achieve the purpose of screening by a reasonably matched screen, has higher screening efficiency, and is widely applied to the industries of chemical industry, metallurgy, food and the like.
In the in-service use, the screen cloth of current shale shaker is changed and is accomplished the back, mainly realizes the fixed of screen cloth and compress tightly through hook plate, wooden wedge, bolt etc. whole operation process is loaded down with trivial details, and the degree of difficulty is great, leads to the cost of labor higher to the screen cloth is easy not hard up, can influence screening efficiency after not hard up, can shorten the life of screen cloth even.
Disclosure of Invention
The embodiment of the application provides a shale shaker, has solved compressing tightly that current shale shaker screen cloth cost of labor is high, compress tightly unreliable problem.
The embodiment of the invention provides a vibrating screen which comprises a screen box, a screen tensioning mechanism, a screen support and a screen pressing mechanism, wherein the screen tensioning mechanism is arranged on the screen box; a screen inlet is arranged on the first side surface of the screen box; the screen mesh support is arranged in the inner cavity of the screen box, two sides of the screen mesh support, which are parallel to the feeding direction of the screen mesh, are respectively fixed with a second side surface and a third side surface of the screen box, and the second side surface and the third side surface are adjacent to the first side surface; the position of the screen cloth inlet end of the screen cloth support corresponds to the screen cloth inlet; the screen mesh pressing mechanism is arranged above the screen mesh support, and two sides of the screen mesh pressing mechanism are respectively arranged on the second side surface and the third side surface of the screen box, and is used for providing pressing force for pressing down the screen mesh after the screen mesh is laid on the placing surface of the screen mesh support; the screen tensioning mechanism is arranged at the tail end of the screen net support and used for pressing the end part of the screen corresponding to the tail end after the screen is laid on the placing surface of the screen net support.
In one possible implementation, the screen tensioning mechanism includes a transmission mechanism, a first rubber roller, a second rubber roller, a third rubber roller, a first gear, a second gear, a third gear, and a fourth gear; the transmission mechanism is arranged on the fourth side surface of the screen box; the first rubber roller, the second rubber roller and the third rubber roller are all arranged in an inner cavity of the screen box, and the highest position of the second rubber roller is parallel to a placing surface of the screen mesh support; a rotating shaft of the first rubber roller penetrates through the second side surface and then is fixed with a driven end of the transmission mechanism; the first gear is sleeved on the rotating shaft of the first rubber roller; the second gear is positioned below the first gear, meshed with the first gear and sleeved at one end of the rotating shaft of the second rubber roller; the third gear is sleeved at the other end of the rotating shaft of the second rubber roller; two ends of a rotating shaft of the second rubber roller are respectively and rotatably connected to the second side surface and the third side surface; the fourth gear is meshed with the third gear and is positioned above the third gear; the fourth gear is sleeved on the rotating shaft of the third rubber roller, and the rotating shaft of the third rubber roller is rotatably connected to the third side surface; the first rubber roller and the third rubber roller are coaxially arranged and have the same shape; the first rubber roller, the second rubber roller and the third rubber roller can press the end of the screen mesh corresponding to the tail end of the screen mesh support.
In one possible implementation, the transmission mechanism includes a first sprocket, a second sprocket, a chain, and a motor; the motor is arranged on the fourth side surface; the first chain wheel is sleeved on the rotating shaft of the motor, and the second chain wheel is sleeved on the rotating shaft of the first rubber roller; the chain is sleeved on the first chain wheel and the second chain wheel simultaneously.
In one possible implementation manner, the screen mesh pressing mechanism comprises a quadrilateral connecting rod structure, a telescopic structure, a linkage pressing plate, a guide plate, an elastic element and an eccentric wheel set; the inner cavity of the screen box is provided with two groups of eccentric wheel sets along the feeding direction of the screen, and the two groups of eccentric wheel sets are respectively arranged on the second side surface and the third side surface; the second side surface and the third side surface are respectively provided with one quadrilateral connecting rod structure, and the quadrilateral connecting rod structure is positioned in the outer cavity of the screen box and is connected with the corresponding eccentric wheel set; the telescopic structure is arranged at the position corresponding to each quadrilateral connecting rod structure, the fixed end of the telescopic structure is arranged on the second side surface or the third side surface, and the telescopic end is hinged with the hinge seat on the upper surface of the quadrilateral connecting rod structure; the four corners of the screen mesh support are respectively provided with one guide plate, and the guide plates are fixed with the support plate of the screen mesh support; and the elastic element is arranged between each guide plate and the linkage pressing plate, so that the linkage pressing plate and the eccentric wheel set are tangent all the time.
In one possible implementation, the quadrilateral linkage structure includes a base plate, a plurality of links, and a plurality of rotating shafts; one end of each of the connecting rods is hinged to the base plate, and the other end of each of the connecting rods is hinged to one rotating shaft; the other end of the rotating shaft is connected with the eccentric wheel set.
In one possible implementation, the telescopic structure comprises an oil cylinder; the fixed end of the oil cylinder is arranged on the second side face or the third side face at the corresponding position, and the telescopic end is hinged with the hinge seat on the upper surface of the quadrilateral connecting rod structure.
In one possible implementation, the resilient element comprises a compression spring.
In one possible implementation, the vibrating screen further comprises a vertical rod; one end of the vertical rod is movably arranged in the mounting hole in the guide plate, and the other end of the vertical rod penetrates through the guide plate and then is connected with the linkage pressing plate.
In one possible implementation, the vibrating screen further comprises a boss and a groove; the groove is arranged below each guide plate and is arranged on the placing surface of the screen mesh support; the boss is arranged on the bottom surface of the linkage pressing plate and corresponds to the groove in position.
In one possible implementation, the vibrating screen further comprises a plurality of wave ball screws; the plurality of wave ball screw rectangular arrays are arranged on the placing surface of the screen mesh support, and the steel balls of the wave ball screws are close to the screen mesh.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the embodiment of the invention provides a vibrating screen which comprises a screen box, a screen tensioning mechanism, a screen support and a screen pressing mechanism. A screen inlet is provided on the first side of the screen box. The screen mesh support is arranged in the inner cavity of the screen box, two sides of the screen mesh support parallel to the feeding direction of the screen mesh are respectively fixed with the second side face and the third side face of the screen box, and the second side face and the third side face are adjacent to the first side face. The position of the screen inlet end of the screen mesh support corresponds to the screen mesh inlet. The screen mesh hold-down mechanism is arranged above the screen mesh support, and two sides of the screen mesh hold-down mechanism are respectively arranged on the second side surface and the third side surface of the screen box, and is used for providing pressing force for pressing down the screen mesh after the screen mesh is laid on the placing surface of the screen mesh support. The screen cloth straining device sets up in the end of screen cloth net support for after the screen cloth is laid to the plane of placing of screen cloth net support, compress tightly the tip of the terminal corresponding screen cloth. In practical application, the screen enters the screen box from the screen inlet and is laid on the placing surface of the screen support, and after the screen reaches the designated position, the screen tensioning mechanism starts to work to press the end part of the screen tightly so as to tension the screen. Then the screen cloth hold-down mechanism begins to work and compresses the screen cloth, and the looseness of the screen cloth is prevented. The shale shaker screen cloth of this application embodiment does not need manual operation when compressing tightly, and degree of automation is high, has reduced the cost of labor. In addition, the screen cloth is difficult not hard up, has improved screening efficiency, has prolonged the life of screen cloth.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first schematic structural diagram of a vibrating screen provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram ii of a vibrating screen according to an embodiment of the present application;
FIG. 3 is a third schematic structural view of a shaker provided in an embodiment of the present application;
FIG. 4 is a first schematic structural diagram of a screen tensioning mechanism according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a screen tensioning mechanism according to an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a quadrilateral linkage structure provided in an embodiment of the present application;
FIG. 7 is a first enlarged view of a portion of FIG. 2;
fig. 8 is a second partial enlarged view of fig. 2.
Icon: 1-a sieve box; 11-a first side; 111-screen inlet; 12-a second side; 13-a third side; 14-a fourth side; 2-a screen tensioning mechanism; 21-a transmission mechanism; 211-a first sprocket; 212-a second sprocket; 213-a chain; 214-a motor; 22-a first rubber roller; 23-a second rubber roller; 24-a third rubber roller; 25-a first gear; 26-a second gear; 27-a third gear; 28-fourth gear; 3-screen mesh support; 31-a support plate; 4-a bearing; 5-a screen mesh pressing mechanism; 51-quadrilateral linkage structure; 511-a substrate; 512-connecting rod; 513-a rotating shaft; 52-a telescopic structure; 53-linkage pressing plate; 54-a guide plate; 55-a resilient element; 56-eccentric wheel group; 6-ball screw; 7-vertical rod; 8-boss; 9-groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
As shown in fig. 1 to 8, an embodiment of the present invention provides a vibrating screen, which includes a screen box 1, a screen tensioning mechanism 2, a screen support 3 and a screen pressing mechanism 5. The screen mesh support 3 is used for placing the screen mesh in the screen mesh replacing process, and the screen mesh is prevented from falling off.
With continued reference to figure 2, the first side 11 of the sieve box 1 is provided with a sieve inlet 111. In practical application, the height of the screen inlet 111 is lower, so that when the screen enters the screen box 1, the screen inlet 111 can flatten the screen, the screen is smoother, and the placing surface of the screen support 3 can be fitted with the screen.
In practical application, the screen mesh support 3 is arranged in the inner cavity of the screen box 1, and two sides of the screen mesh support parallel to the feeding direction of the screen mesh are respectively fixed with the second side 12 and the third side 13 of the screen box 1, and the second side 12 and the third side 13 are adjacent to the first side 11. The position of the screen entry end of the screen carrier 3 corresponds to the screen inlet 111. The screen mesh hold-down mechanism 5 is arranged above the screen mesh support 3, and two sides of the screen mesh hold-down mechanism are respectively arranged on the second side surface 12 and the third side surface 13 of the screen box 1, and is used for providing hold-down force for the screen mesh after the screen mesh is laid on the placing surface of the screen mesh support 3. The screen cloth can be because the motor excitation at the in-process of sieve material, and lead to the screen cloth constantly to vibrate, therefore after the screen cloth is changed and is accomplished, need compress tightly the screen cloth and avoid the screen cloth to produce because constantly vibrating at the course of the work not hard up, and screen cloth hold-down mechanism 5 can compress tightly the screen cloth, has avoided not hard up of screen cloth, has guaranteed the sieve material efficiency of screen cloth, has further prolonged the life of screen cloth.
Specifically, the screen tensioning mechanism 2 is arranged at the tail end of the screen net support 3 and used for pressing the end part of the screen corresponding to the tail end after the screen is laid on the placing surface of the screen net support 3. In practical application, the end part of the screen cloth corresponding to the tail end of the screen cloth support 3 can be pressed by the screen cloth tensioning mechanism 2, the looseness of the screen cloth caused by the fact that the end part of the screen cloth is not pressed is avoided, the screening efficiency of the screen cloth is improved, the service life of the screen cloth is prolonged, and therefore the use cost is reduced.
The embodiment of the invention provides a vibrating screen which comprises a screen box 1, a screen tensioning mechanism 2, a screen mesh support 3 and a screen pressing mechanism 5. A screen inlet 111 is provided on the first side 11 of the screen box 1. The screen mesh support 3 is arranged in the inner cavity of the screen box 1, two sides of the screen mesh support parallel to the feeding direction of the screen mesh are respectively fixed with the second side surface 12 and the third side surface 13 of the screen box 1, and the second side surface 12 and the third side surface 13 are adjacent to the first side surface 11. The position of the screen entry end of the screen carrier 3 corresponds to the screen inlet 111. The screen mesh hold-down mechanism 5 is arranged above the screen mesh support 3, and two sides of the screen mesh hold-down mechanism are respectively arranged on the second side surface 12 and the third side surface 13 of the screen box 1, and is used for providing hold-down force for the screen mesh after the screen mesh is laid on the placing surface of the screen mesh support 3. The screen tensioning mechanism 2 is arranged at the tail end of the screen net support 3 and used for pressing the end part of the screen corresponding to the tail end after the screen is laid on the placing surface of the screen net support 3. In practical application, the screen enters the screen box 1 from the screen inlet 111 and is laid on the placing surface of the screen tray 3, and after the screen reaches the designated position, the screen tensioning mechanism 2 starts to work to press the end part of the screen to tension the screen. The screen hold-down mechanism 5 then begins to operate to hold down the screen, preventing it from loosening. The shale shaker screen cloth of this application embodiment does not need manual operation when compressing tightly, and degree of automation is high, has reduced the cost of labor. In addition, the screen cloth is difficult not hard up, has improved screening efficiency, has prolonged the life of screen cloth.
In practical application, the screen tensioning mechanism 2 comprises a transmission mechanism 21, a first rubber roller 22, a second rubber roller 23, a third rubber roller 24, a first gear 25, a second gear 26, a third gear 27 and a fourth gear 28.
With continued reference to fig. 1, a transmission 21 is provided on the fourth side 14 of the sieve box 1. The first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 are all arranged in the inner cavity of the screen box 1, and the highest position of the second rubber roller 23 is parallel to the placing surface of the screen mesh support 3. Because the screen mesh enters the gaps among the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 from the placing surface of the screen mesh support 3 in the advancing process, the highest position of the second rubber roller 23 is parallel to the placing surface of the screen mesh support 3, the screen mesh can smoothly enter the gaps among the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 to be pressed, and when the highest position of the second rubber roller 23 is higher than the placing surface of the screen mesh support 3, the screen mesh is not easy to enter the gaps among the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24, so that the pressing difficulty of the screen mesh is increased.
Specifically, the rotating shaft of the first rubber roller 22 passes through the second side surface 12 and is fixed to the driven end of the transmission mechanism 21. The first gear 25 is sleeved on the rotating shaft of the first rubber roller 22. The second gear 26 is located below the first gear 25 and meshed with the first gear 25, and is sleeved on one end of the rotating shaft of the second rubber roller 23. The third gear 27 is sleeved on the other end of the rotating shaft of the second rubber roller 23; the second rubber roller 23 has both ends of its rotation shaft rotatably connected to the second side 12 and the third side 13, respectively. The fourth gear 28 is meshed with the third gear 27 and is located above the third gear 27. The fourth gear 28 is sleeved on the rotating shaft of the third rubber roller 24, and the rotating shaft of the third rubber roller 24 is rotatably connected to the third side 13. The first rubber roller 22 and the third rubber roller 24 are coaxially arranged and have the same shape. The first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 are capable of pressing against the end of the screen mesh corresponding to the end of the screen mesh tray 3.
In practical application, because the rotating shaft of the first rubber roller 22 is fixed to the driven end of the transmission mechanism 21, when the transmission mechanism 21 rotates, the first rubber roller 22 is driven to rotate, the first gear 25 is sleeved on the rotating shaft of the first rubber roller 22, so that the first rubber roller 22 drives the first gear 25 to rotate when rotating, the first gear 25 drives the second gear 26 to rotate, the second gear 26 drives the second rubber roller 23 to rotate, the second rubber roller 23 rotates to drive the third gear 27 to rotate, the third gear 27 drives the fourth gear 28 to rotate, and the fourth gear 28 rotates to drive the third rubber roller 24 to rotate, so that the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 can rotate and extrude the screen mesh at the same time. When the screen is replaced and needs to be compressed, the end part of the screen corresponding to the tail end of the screen support 3 is extruded by the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 to advance to a proper position, then the transmission mechanism 21 stops acting, and the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 compress the end part of the screen so as to ensure that the screen cannot be loosened in the working process, improve the screening efficiency of the screen, prolong the service life of the screen and reduce the use cost.
With continued reference to fig. 4, the transmission mechanism 21 includes a first sprocket 211, a second sprocket 212, a chain 213, and a motor 214. The motor 214 is disposed on the fourth side 14. The first sprocket 211 is sleeved on the rotating shaft of the motor 214, and the second sprocket 212 is sleeved on the rotating shaft of the first rubber roller 22. The chain 213 is simultaneously sleeved on the first sprocket 211 and the second sprocket 212. When the screen needs to be pressed after being replaced, the motor 214 rotates in the forward direction to drive the first chain wheel 211 to rotate, the first chain wheel 211 rotates to drive the second chain wheel 212 to rotate, so as to drive the first rubber roller 22 to rotate, the first rubber roller 22 rotates to drive the first gear 25 to rotate, the first gear 25 rotates to drive the second gear 26 to rotate, the second gear 26 rotates to drive the second rubber roller 23 to rotate, the second rubber roller 23 rotates to drive the third gear 27 to rotate, the third gear 27 rotates to drive the fourth gear 28 to rotate, the fourth gear 28 rotates to drive the third rubber roller 24 to rotate, so that the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 rotate simultaneously, so that the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 simultaneously press the screen to move the screen to a proper position, and then the motor 214 stops working, the first rubber roller 22, the second rubber roller 23 and the third rubber roller 24 tightly press the end part of the screen cloth, so that the screen cloth is prevented from loosening in the working process, the screening efficiency of the screen cloth is improved, and the service life of the screen cloth is prolonged. When the screen cloth needs to be recovered, the screen cloth can be recovered by reversing the motor 214. The whole operation process is simple, manual operation is not needed, simplicity and rapidness are achieved, labor cost is reduced, and working efficiency is improved. Of course, the transmission mechanism 21 may also include a first pulley, a second pulley, a belt, and a motor 214. The motor 214 is disposed on the fourth side 14. The first pulley is sleeved on the rotating shaft of the motor 214, and the second pulley is sleeved on the rotating shaft of the first rubber roller 22. The belt is sleeved on the first belt pulley and the second belt pulley simultaneously.
In practical application, the screen pressing mechanism 5 comprises a quadrilateral linkage structure 51, a telescopic structure 52, a linkage pressing plate 53, a guide plate 54, an elastic element 55 and an eccentric wheel set 56. In practical application, linkage clamp plate 53 adopts monolithic structure, and monolithic structure can improve linkage clamp plate 53 compress tightly the effect, guarantees not take place to relax and curl in the screen cloth working process, has further prolonged the practical life of screen cloth, has improved the screening efficiency of screen cloth.
Specifically, two sets of eccentric wheel sets 56 are disposed in the inner cavity of the screen box 1 along the feeding direction of the screen, and the two sets of eccentric wheel sets 56 are disposed on the second side 12 and the third side 13, respectively. The second side 12 and the third side 13 are respectively provided with a quadrilateral connecting rod structure 51, and the quadrilateral connecting rod structure 51 is positioned at the outer cavity of the screen box 1 and is connected with the corresponding eccentric wheel set 56. As shown in fig. 3, the quadrilateral linkage 51 is connected to the eccentric wheel set 56 via bearings 4 clamped on the side walls of the screen mesh carrier 3. The arrangement of the bearing 4 can reduce the friction coefficient of the quadrilateral connecting rod structure 51 in the rotating process, prolong the service life of the quadrilateral connecting rod structure 51 and improve the precision of the whole device.
Further, a telescopic structure 52 is arranged at a position corresponding to each quadrilateral connecting rod structure 51, a fixed end of the telescopic structure 52 is arranged on the second side 12 or the third side 13, and the telescopic end is hinged with a hinge seat on the upper surface of the quadrilateral connecting rod structure 51. The four corners of the screen net support 3 are respectively provided with a guide plate 54, and the guide plates 54 are fixed with the support plate 31 of the screen net support 3. An elastic element 55 is arranged between each guide plate 54 and the linkage pressure plate 53, so that the linkage pressure plate 53 and the eccentric wheel set 56 are always tangent. As shown in fig. 7, one end of the elastic member 55 is connected to the guide plate 54, and the other end is connected to the interlocking pressure plate 53. In addition, a mounting hole is provided in each guide plate 54, the mounting hole extending in a direction perpendicular to the movement of the screen.
When the screen needs to be compacted, the telescopic structure 52 is controlled by a control system, specifically, the control system may be a remote controller, a computer program, or the like, which is not limited in this embodiment. The extension structure 52 extends to drive the quadrilateral linkage 51 to move downwards, so as to drive the eccentric wheel set 56 to press the linkage pressing plate 53 downwards, so that the linkage pressing plate 53 presses the screen. When the screen needs to be loosened, the control system controls the telescopic structure 52, the telescopic structure 52 is shortened to drive the quadrilateral connecting rod structure 51 to move upwards, so that the eccentric wheel set 56 is driven to move upwards, and the linkage pressing plate 53 moves upwards along with the eccentric wheel set 56 under the action of the tensile force of the elastic element 55, so that the screen is in a loosened state. The screen does not need manual operation in the pressing and releasing processes, the automation degree is high, the labor cost is reduced, the pressing and releasing speed is high, the working time is saved, and the working efficiency is improved.
With continued reference to fig. 6, the quadrilateral linkage 51 includes a base 511, a plurality of links 512, and a plurality of shafts 513. One end of each of the plurality of links 512 is hinged to the base plate 511, and the other end is hinged to a rotating shaft 513. The other end of the rotating shaft 513 is connected to the eccentric wheel set 56. Specifically, the quadrilateral linkage 51 includes five links 512, one end of each of the five links 512 is hinged to the base 511, the other end of each of the five links 512 is hinged to a rotating shaft 513, and the other end of the rotating shaft 513 is connected to the eccentric wheel set 56 through a bearing 4 clamped on the side wall of the screen mesh support 3. The arrangement of the bearing 4 can reduce the friction coefficient of the rotating shaft 513 in the rotating process, prolong the service life of the rotating shaft 513 and improve the precision of the whole device. Of course, the number of the connecting rods 512 can be two, three, etc., and in comparison, when five connecting rods 512 are provided, the pressing force of the eccentric wheel set 56 on the linkage pressing plate 53 is larger, the pressing force distribution is more uniform, and a better pressing effect can be achieved. In addition, since the other end of the rotating shaft 513 is connected to the eccentric wheel set 56, when the quadrilateral linkage 51 moves, the eccentric wheel set 56 can be driven to move, and the eccentric wheel set 56 can press down the linkage pressing plate 53, so that the linkage pressing plate 53 can press the screen.
Specifically, the telescoping structure 52 includes a cylinder. The fixed end of the oil cylinder is arranged on the second side 12 or the third side 13 at the corresponding position, and the telescopic end is hinged with the hinged seat on the upper surface of the quadrilateral connecting rod structure 51. In practical application, when the screen is replaced and needs to be compressed, the control mechanism controls the oil cylinder, the telescopic end of the oil cylinder extends, so that the quadrilateral connecting rod structure 51 is driven to press downwards, the eccentric wheel group 56 is driven to press the linkage pressing plate 53 downwards, and the linkage pressing plate 53 compresses the screen. When the screen needs to be loosened, the control mechanism controls the oil cylinder, the telescopic end of the oil cylinder is shortened, the quadrilateral connecting rod structure 51 is driven to move upwards, the eccentric wheel set 56 is driven to move upwards, the linkage pressing plate 53 moves upwards along with the eccentric wheel set 56 under the action of the tensile force of the elastic element 55, and then the loosening of the screen is achieved. Of course, the telescopic structure 52 may also be an electric push rod or a pneumatic cylinder, a fixed end of the electric push rod or the pneumatic cylinder is disposed on the corresponding second side 12 or the third side 13, and the telescopic end is hinged to the hinge seat on the upper surface of the quadrilateral linkage 51.
In practice, the elastic element 55 comprises a compression spring. Specifically, one end of the compression spring is connected to the guide plate 54, and the other end is connected to the link pressure plate 53. Of course, the elastic element 55 may also be a coil spring or a rubber spring. One end of a coil spring or a rubber spring is connected to the guide plate 54, and the other end is connected to the link pressure plate 53. In comparison, the cost of the compression spring is low, and the compression spring material is easy to obtain.
In particular, the vibrating screen also comprises vertical bars 7. One end of the vertical rod 7 is movably arranged in the mounting hole on the guide plate 54, and the other end of the vertical rod passes through the guide plate 54 and then is connected with the linkage pressing plate 53. The vertical rod 7 can ensure that the linkage pressing plate 53 always keeps moving in the vertical direction when pressing and loosening the screen, can play a role in guiding and positioning, and ensures that the linkage pressing plate 53 can still keep the original position unchanged after the linkage pressing plate moves up and down for many times, so that the linkage pressing plate 53 can always press the screen.
With continued reference to fig. 8, the shaker screen further includes a boss 8 and a groove 9. A groove 9 is provided below each guide plate 54, and the groove 9 is provided on the placement surface of the screen mesh holder 3. The boss 8 is arranged on the bottom surface of the linkage pressing plate 53 and corresponds to the position of the groove 9. In practical application, when linkage clamp plate 53 compresses tightly the screen cloth to the direction motion that is close to the screen cloth, the boss 8 that sets up in linkage clamp plate 53 bottom surface can be along with linkage clamp plate 53 motion, and when linkage clamp plate 53 compressed tightly the screen cloth, boss 8 also can compress tightly the screen cloth and block in the recess 9 to make the screen cloth be difficult for deviating from at the in-process of sieve material, improved the effect that compresses tightly of screen cloth, reliability when having increased linkage clamp plate 53 and compressing tightly the screen cloth.
In practice, the vibrating screen also comprises a plurality of bead screws 6. A plurality of wave pearl screws 6 are arranged on the placing surface of the screen mesh support 3 in a rectangular array mode, and the steel balls of the wave pearl screws 6 are close to the screen mesh. As shown in fig. 7, the wave bead screws 6 are respectively installed on the placing surface of the screen mesh support 3 according to a rectangular array of 6 rows by 37 columns to fix the screen mesh support 3, and in addition, the steel balls on the wave bead screws 6 can reduce the contact area between the placing surface of the screen mesh support 3 and the screen mesh, so that the friction force in the moving process of the screen mesh is reduced, the time required by replacing the screen mesh is reduced, and the replacing efficiency of the screen mesh is improved.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.
Claims (10)
1. A vibrating screen is characterized by comprising a screen box (1), a screen tensioning mechanism (2), a screen net support (3) and a screen pressing mechanism (5);
a screen inlet (111) is arranged on the first side surface (11) of the screen box (1);
the screen mesh support (3) is arranged in an inner cavity of the screen box (1), two sides of the screen mesh support parallel to the screen mesh feeding direction are respectively fixed with a second side surface (12) and a third side surface (13) of the screen box (1), and the second side surface (12) and the third side surface (13) are adjacent to the first side surface (11); the position of the screen inlet end of the screen mesh support (3) corresponds to the screen inlet (111);
the screen mesh pressing mechanism (5) is arranged above the screen mesh support (3), and two sides of the screen mesh pressing mechanism are respectively arranged on the second side surface (12) and the third side surface (13) of the screen box (1) and used for providing pressing force for pressing down the screen mesh after the screen mesh is laid on the placing surface of the screen mesh support (3);
the screen tensioning mechanism (2) is arranged at the tail end of the screen net support (3) and used for pressing the end part of the screen corresponding to the tail end after the screen is laid on the placing surface of the screen net support (3).
2. The vibrating screen of claim 1, wherein the screen tensioning mechanism (2) comprises a transmission mechanism (21), a first rubber roller (22), a second rubber roller (23), a third rubber roller (24), a first gear (25), a second gear (26), a third gear (27) and a fourth gear (28);
the transmission mechanism (21) is arranged on the fourth side surface (14) of the screen box (1);
the first rubber roller (22), the second rubber roller (23) and the third rubber roller (24) are all arranged in an inner cavity of the screen box (1), and the highest position of the second rubber roller (23) is parallel to a placing surface of the screen mesh support (3);
the rotating shaft of the first rubber roller (22) penetrates through the second side surface (12) and then is fixed with the driven end of the transmission mechanism (21);
the first gear (25) is sleeved on the rotating shaft of the first rubber roller (22);
the second gear (26) is positioned below the first gear (25), is meshed with the first gear (25) and is sleeved at one end of a rotating shaft of the second rubber roller (23);
the third gear (27) is sleeved at the other end of the rotating shaft of the second rubber roller (23);
two ends of a rotating shaft of the second rubber roller (23) are respectively and rotatably connected with the second side surface (12) and the third side surface (13);
the fourth gear (28) is meshed with the third gear (27) and is positioned above the third gear (27);
the fourth gear (28) is sleeved on the rotating shaft of the third rubber roller (24), and the rotating shaft of the third rubber roller (24) is rotatably connected to the third side surface (13);
the first rubber roller (22) and the third rubber roller (24) are coaxially arranged and have the same shape;
the first rubber roller (22), the second rubber roller (23) and the third rubber roller (24) are capable of pressing against the end of the screen corresponding to the end of the screen mesh carrier (3).
3. The vibrating screen of claim 2, wherein the transmission mechanism (21) comprises a first sprocket (211), a second sprocket (212), a chain (213), and a motor (214);
the motor (214) is arranged on the fourth side surface (14);
the first chain wheel (211) is sleeved on the rotating shaft of the motor (214), and the second chain wheel (212) is sleeved on the rotating shaft of the first rubber roller (22);
the chain (213) is sleeved on the first chain wheel (211) and the second chain wheel (212) at the same time.
4. The vibrating screen of claim 1, wherein the screen hold-down mechanism (5) comprises a quadrilateral linkage structure (51), a telescopic structure (52), a linkage pressing plate (53), a guide plate (54), an elastic element (55) and an eccentric wheel set (56);
two groups of eccentric wheel sets (56) are arranged in the inner cavity of the screen box (1) along the feeding direction of the screen mesh, and the two groups of eccentric wheel sets (56) are respectively arranged on the second side surface (12) and the third side surface (13); the second side surface (12) and the third side surface (13) are respectively provided with one quadrilateral connecting rod structure (51), and the quadrilateral connecting rod structure (51) is positioned at the outer cavity of the screen box (1) and is connected with the corresponding eccentric wheel set (56);
the telescopic structure (52) is arranged at the position corresponding to each quadrilateral connecting rod structure (51), the fixed end of the telescopic structure (52) is arranged on the second side surface (12) or the third side surface (13), and the telescopic end is hinged with the hinge seat on the upper surface of the quadrilateral connecting rod structure (51);
the four corners of the screen mesh support (3) are respectively provided with one guide plate (54), and the guide plates (54) are fixed with the support plate (31) of the screen mesh support (3); and an elastic element (55) is arranged between each guide plate (54) and the linkage pressing plate (53) so that the linkage pressing plate (53) and the eccentric wheel set (56) are tangent at all times.
5. The vibrating screen of claim 4, wherein the quadrilateral linkage arrangement (51) comprises a base plate (511), a plurality of links (512) and a plurality of shafts (513);
one end of each of the connecting rods (512) is hinged to the base plate (511), and the other end of each of the connecting rods is hinged to one rotating shaft (513);
the other end of the rotating shaft (513) is connected with the eccentric wheel set (56).
6. The vibrating screen of claim 4, wherein the telescoping structure (52) comprises an oil cylinder;
the fixed end of the oil cylinder is arranged on the second side face (12) or the third side face (13) in a corresponding position, and the telescopic end of the oil cylinder is hinged to the hinge seat on the upper surface of the quadrilateral connecting rod structure (51).
7. The vibrating screen of claim 4, wherein the resilient element (55) comprises a compression spring.
8. The vibrating screen of claim 4, further comprising a vertical bar (7);
one end of the vertical rod (7) is movably arranged in the mounting hole on the guide plate (54), and the other end of the vertical rod penetrates through the guide plate (54) and then is connected with the linkage pressing plate (53).
9. The vibrating screen of claim 4, further comprising bosses (8) and grooves (9);
the groove (9) is arranged below each guide plate (54), and the groove (9) is arranged on the placing surface of the screen mesh support (3);
the boss (8) is arranged on the bottom surface of the linkage pressing plate (53) and corresponds to the groove (9).
10. The vibrating screen of claim 1, further comprising a plurality of wave ball screws (6);
the plurality of wave bead screws (6) are arranged on the placing surface of the screen mesh support (3) in a rectangular array mode, and the steel balls of the wave bead screws (6) are close to the screen mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111095011.9A CN113731795B (en) | 2021-09-17 | 2021-09-17 | Vibrating screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111095011.9A CN113731795B (en) | 2021-09-17 | 2021-09-17 | Vibrating screen |
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| CN113731795B CN113731795B (en) | 2022-08-16 |
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Cited By (1)
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|---|---|---|---|---|
| CN116727240A (en) * | 2023-08-10 | 2023-09-12 | 新乡市源丰钙业有限公司 | Multistage screening equipment for sand aggregates |
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| CN113731795B (en) | 2022-08-16 |
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