A vibrating screen

Abstract

The present invention discloses a vibrating screen, including a guide trough assembly, a screen frame assembly, a lifting assembly, a feeder assembly and a mud guard assembly. The screen frame assembly includes a screen frame body, wherein an upper screen frame and a lower screen frame are respectively arranged at the upper and lower ends of the screen frame body; a screen cloth adjustment assembly is arranged on the screen frame body, and the screen cloth adjustment assembly also includes a driving assembly; the screen cloth is made to be in a continuous bending state or a folded state at one end and a nearly parallel state at the other end. The present invention relates to the technical field of material separation and screening, and the design of the lifting assembly can adjust the relative angle between the screen frame body and the guide trough body, and adjust the falling rate of the mud. The screen cloth frame not only supports the screen cloth, but also can change the use form of the screen cloth according to the adjustment of the screen cloth frame. The surface of the screen cloth can be in a continuous bending state, a folded state at one end or a nearly parallel state at the other end, and can be continuously adjusted and transformed in three states. The contact effect between the material and the screen cloth is enhanced, and the screening efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of material separation and screening, in particular to a vibrating screen. Background Art

[0002] Vibrating screen is a solid-liquid separation equipment widely used in mining, chemical, food, construction and other industries. Its main function is to screen the mixed materials to separate solid particles and liquids of different particle sizes. Most of the existing vibrating screens adopt single-layer or multi-layer screen body design, and the screen is usually flat. The material falls naturally along the inclination angle of the screen under the action of gravity, and the solid material is separated from the liquid by vibration during the falling process.

[0003] Although traditional vibrating screens are widely used in the field of solid-liquid separation, they have some shortcomings. First, because the screen is laid flat in a conventional manner, the flow rate of the material (especially the mud) on the screen is relatively uniform, which limits the screening efficiency to a certain extent. Secondly, the fixed screen angle and vibration mode affect the screening effect and efficiency of the mud. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a vibrating screen, which solves the problem that the fixed screen angle and vibration mode set in the existing vibrating screen affect the mud screening effect.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions: a vibrating screen, comprising:

[0006] A guide trough assembly, comprising a guide trough body and a feeder mounting column fixed to the rear side of the guide trough body;

[0007] The screen frame assembly comprises a screen frame body, which is movably connected to the guide trough body, and a vibrator connecting frame is arranged on the screen frame body; an upper screen frame and a lower screen frame are arranged at the upper and lower ends of the screen frame body, respectively, a screen mesh is installed on the upper screen frame, and a screen cloth is installed on the lower screen frame;

[0008] A lifting assembly is connected to the front ends of the screen frame body and the guide trough body and is capable of adjusting the relative angle between the screen frame body and the guide trough body;

[0009] The feeder assembly comprises a feeder housing fixed on the feeder mounting column; the feeder housing is provided with a discharge port;

[0010] The mud guard assembly comprises a mud guard covering one end of the top surface of the screen frame body close to the feeder box, and the mud guard is connected to the feeder box through a mud guard connecting frame.

[0011] Preferably, the discharge port includes a first discharge port formed on the side wall of the discharge bin and a second discharge port formed at the bottom of the discharge bin;

[0012] A discharge bin is formed inside the feeder box, and the front side wall and the rear side wall of the discharge bin respectively form a first contact surface and a second contact surface; a flap is rotatably arranged in the discharge bin, and a push rod is arranged on the feeder box, and the rotating end of the push rod extends into the discharge bin and is fixed to the flap; wherein, when the push rod is pushed to the first position, the flap abuts against the first contact surface and blocks the first discharge port; when the push rod is pushed to the second position, the flap abuts against the second contact surface and blocks the second discharge port.

[0013] Preferably, the lifting assembly comprises:

[0014] A column, the bottom of which is fixedly connected to the guide trough body; a fixed crossbeam is provided on the top of the column;

[0015] A sliding sleeve is sleeved on the column and fixedly connected to the screen frame body; a locking bolt is provided through the sliding sleeve and pressed against the column; a sliding beam is fixed on the top of the sliding sleeve;

[0016] A lifting assembly is arranged between the fixed crossbeam and the sliding crossbeam, and the lifting assembly includes a threaded cylinder, and a handle is fixed to the outer wall of the threaded cylinder; the upper and lower ends of the threaded cylinder are respectively threadedly connected with an upper threaded rod and a lower threaded rod, and the ends of the upper threaded rod and the lower threaded rod are rotatably connected with connecting seats, and the two connecting seats are respectively fixedly connected to the fixed crossbeam and the sliding crossbeam.

[0017] Preferably, a gantry connecting seat is fixed to the rear side of the screen frame body, a keel beam is fixed to the middle part of the guide trough body, and the upper screen frame is respectively fixed to the gantry connecting seat and the keel beam; both sides of one end of the upper screen frame close to the feeder box are bent upward to form a side screen frame, the screen covers the side screen frame, and a side guard plate is provided on the front side of the side screen frame.

[0018] Preferably, both ends of the screen cloth are fixed to the keel beam and the screen frame body through a pressing plate;

[0019] A screen cloth locking piece is arranged on the outside of the screen frame body, extends into the screen frame body and is fixed on a pressing plate, and the pressing plate presses the screen cloth tightly against the screen frame body.

[0020] Preferably, the screen cloth locking member comprises a screw, one end of which is fixed to the pressing plate by a nut, and the other end of which is fixed to the screen frame body by a nut.

[0021] Preferably, a screen cloth adjustment assembly is provided on the screen frame body, the screen cloth adjustment assembly includes a screen cloth frame, the screen cloth frame includes a plurality of first movable frames and a second movable frame, the top of the second movable frame is hinged to the first movable frame on one side through a connecting piece, and the bottom is hinged to the first movable frame on the other side through a supporting body, the screen cloth is fixed on the connecting piece, the bottoms of the first movable frame and the second movable frame are bent outward to form a curved portion, and the screen cloth is deformed when it contacts the supporting body, so that the bottom of the screen cloth is embedded in the curved portion to form an expansion cavity;

[0022] The support body includes a main support body and a plurality of auxiliary support bodies located on both sides of the main support body.

[0023] Preferably, the screen cloth adjustment assembly further includes a drive assembly, and the drive assembly includes:

[0024] A polished rod is fixed in the inner cavity of the screen frame body, and the main support body and the auxiliary support body are slidably connected to the polished rod;

[0025] A motor is fixed on the outer wall of the screen frame body;

[0026] A sliding seat is fixed at the bottom of the inner cavity of the screen frame body, a reciprocating screw rod is rotatably connected in the sliding seat, and the output end of the motor penetrates the outer wall of the screen frame body and drives the reciprocating screw rod to rotate forward or reversely through the driving main shaft;

[0027] A slider is rotatably connected to the reciprocating screw rod and slidably connected to the slide seat; the slider is connected to the main support body;

[0028] When the reciprocating screw is rotating forward or backward, the slider moves horizontally to drive the main support body to move left and right, so that the screen cloth is in a continuous bending state or one end is folded and the other end is nearly parallel.

[0029] Preferably, the auxiliary support body includes a first sleeve, the first sleeve has a first sliding part slidably connected to the light rod, the first sleeve has cavities at both ends, the first rod passes through the cavity, a table is fixed to the part of the first rod located in the cavity, the table is connected to the first sleeve through a second spring, and a first top block is fixed to the top of the first rod; the first movable frame and the second movable frame located on both sides of the main support body are hinged at the bottom to the first top block.

[0030] Preferably, the main support body comprises a second sleeve body, the second sleeve body has a second sliding part slidably connected to the light rod, second rods are fixed on both sides of the top of the second sleeve body, a second top block is fixed on the second rod, and the screen cloth frame is located in the middle and the adjacent first movable frame and the second movable frame are hinged on the second sleeve body at the bottom;

[0031] A groove frame is fixed at the bottom of the second sleeve, a vertical plate is fixed on the slider, guide rods are fixed at both ends of the vertical plate, the guide rods penetrate the groove frame, a third spring is sleeved on the guide rods, and the third spring abuts against the groove frame and the vertical plate.

[0032] Beneficial effects of the present invention: By using a vibrating screen provided by the present invention, the following effects are achieved compared with the prior art:

[0033] The design of the lifting assembly can adjust the relative angle between the screen frame body and the guide trough body, so that the falling rate of the mud can be adjusted according to the characteristics of the material and the screening requirements. This design improves the adaptability and flexibility of the vibrating screen and can effectively improve the screening efficiency.

[0034] The screen cloth frame not only supports the screen cloth, but also can change the use form of the screen cloth according to the adjustment of the screen cloth frame. The surface of the screen cloth can be in a continuous bending state, a folded state at one end, or a nearly parallel state at the other end, and can be continuously adjusted and transformed in these three states. This design allows the mud to change horizontally and vertically during the longitudinal sliding of the screen cloth, increasing the movement path of the material on the screen cloth, enhancing the contact effect between the material and the screen cloth, and improving the screening efficiency.

[0035] Through the micro-vibration of the main support and the auxiliary support, the screen cloth and the screen cloth frame are micro-vibrated up and down and left and right, forming a multiple vibration effect. This micro-vibration effect not only helps to prevent the screen cloth from being blocked, but also increases the contact frequency between the mud and the screen cloth, thereby significantly improving the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a front view of the vibrating screen of the present invention;

[0037] Figure 2 A top view of the vibrating screen of the present invention;

[0038] Figure 3 This is a left side view of the vibrating screen of the present invention;

[0039] Figure 4 This is an exploded view of the vibrating screen structure of the present invention;

[0040] Figure 5 This is a schematic diagram of the exploded structure of the feeder box assembly of the present invention;

[0041] Figure 6 This is a schematic diagram of the internal structure of the feeder box assembly of the present invention;

[0042] Figure 7 It is a top view of the screen frame main body of the present invention;

[0043] Figure 8 This is a schematic diagram of the explosion structure of the screen frame body of the present invention;

[0044] Fig. 9 This is a schematic diagram of the structure of the screen cloth adjustment assembly of the present invention in the first state;

[0045] Fig.10 This is a schematic diagram of the structure of the screen cloth adjustment assembly of the present invention in the second state;

[0046] Fig.11 This is a schematic structural diagram of the screen cloth adjustment assembly of the present invention in the third state;

[0047] Fig.12 It is a schematic diagram of the structure of the screen cloth frame of the present invention;

[0048] Fig.13 It is a schematic diagram of the connection structure between the screen cloth frame, the auxiliary support body and the main support body of the present invention;

[0049] Fig.14 It is a schematic diagram of the three-dimensional structure of the auxiliary support body of the present invention;

[0050] Fig.15 This is a schematic diagram of the internal structure of the first housing of the present invention;

[0051] Fig.16 This is a schematic diagram of the three-dimensional structure of the main support body of the present invention;

[0052] Fig.17 It is a schematic diagram of the internal structure of the slot frame of the present invention.

[0053] Description of reference numerals in the figures

[0054] 1. Guide trough body, 2. Feeder mounting column, 3. Feeder box, 301. Discharge bin, 302. First contact surface, 303. Second contact surface, 4. Push rod, 5. Discharge port, 51. First discharge port, 52. Second discharge port, 6. Mud guard, 7. Mud guard connecting frame, 8. Gantry connecting seat, 9. Vibrator connecting frame, 10. Screen frame body, 11. Upper screen frame, 12. Lower screen frame, 13. Fixed beam, 14. Sliding beam, 15. Column, 16. Sliding sleeve, 17. Locking bolt, 18. Upper threaded rod, 19. Threaded cylinder, 20. Handle, 21. Lower threaded rod, 22. Connecting seat, 23. Flap, 24. Keel beam, 25. Screen cloth, 251. Expansion cavity, 26. Side screen frame, 27 , side guard plate, 28, screen, 29, screen cloth locking piece, 30, motor, 31, driving spindle, 32, sliding table seat, 33, reciprocating screw rod, 34, slider, 35, light rod, 36, auxiliary support body, 361, first sleeve, 362, first sliding part, 363, first rod, 364, first top block, 365, second spring, 366, table, 367, cavity, 37, main support body, 371, second sleeve, 372, second sliding part, 373, second rod, 374, second top block, 375, groove frame, 376, guide rod, 377, vertical plate, 378, third spring, 38, screen cloth frame, 381, first movable frame, 382, ​​second movable frame, 383, connecting piece, 384, bending part. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. As long as the effects of the present invention can be exerted, various changes can be made to the implementation scheme.

[0056] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0057] Reference Figure 1-17 A vibrating screen according to this embodiment will be described.

[0058] In this embodiment, if Figures 1 to 4 As shown, the vibrating screen includes a guide trough assembly, a screen frame assembly, a lifting assembly, a feeder assembly and a mud guard assembly. The mud in the feeder assembly falls into the screen frame assembly for screening, the screened sand flows out of the screen frame assembly, and the screened slurry falls into the guide trough assembly and is discharged.

[0059] In this embodiment, if Figures 1 to 4As shown, the guide channel assembly includes a guide channel body 1 and a feeder mounting column 2 fixed to the rear side of the guide channel body 1. A controller mounting column is also fixed to the guide channel body 1. A liquid outlet is provided on the guide channel body 1.

[0060] In this embodiment, if Figures 1 to 6 As shown, the feeder assembly includes a feeder housing 3 fixed on the feeder mounting column 2; the feeder housing 3 is provided with a discharge port 5; the discharge port 5 includes a first discharge port 51 formed on the side wall of the discharge bin 301 and a second discharge port 52 formed at the bottom of the discharge bin 301;

[0061] A discharge bin 301 is formed inside the feeder box 3, and the front side wall and the rear side wall of the discharge bin 301 respectively form a first contact surface 302 and a second contact surface 303; a flap 23 is rotatably arranged in the discharge bin 301, and a push rod 4 is arranged on the feeder box 3, and the rotating end of the push rod 4 extends into the discharge bin 301 and is fixed to the flap 23; in one embodiment, when the push rod 4 is pushed to the first position, the flap 23 abuts against the first contact surface 302 and blocks the first discharge port 51, at this time the second discharge port 52 is in an open state, and the mud flows out through the second discharge port 52 and directly flows into the screen cloth 25; in another embodiment, when the push rod 4 is pushed to the second position, the flap 23 abuts against the second contact surface 303 and blocks the second discharge port 52, at this time the first discharge port 51 is in an open state, and the mud flows out through the first discharge port 51 and directly flows into the screen 28. After the screen 28 performs a coarse screening to filter out the large pieces of sand, the mud and fine sand fall onto the screen cloth 25 for a secondary screening to filter out the fine sand. The user can select any one of the two implementation modes to operate according to the specific conditions of the mud.

[0062] In this embodiment, if Figure 1 , Figure 2 and Figure 4 As shown, the mud guard assembly includes a mud guard 6, which covers the top surface of the screen frame body 10 and one end of the feeder housing 3, and is used to prevent splashing caused by the impact force generated when the mud flows out of the discharge port 5, and is used to block splashing mud. The mud guard 6 is connected to the feeder housing 3 through a mud guard connecting frame 7.

[0063] In this embodiment, if Figure 1 , Figure 2 and Figure 4 As shown, the lifting assembly is connected to the front ends of the screen frame body 10 and the guide trough body 1 , and is capable of adjusting the relative angle between the screen frame body 10 and the guide trough body 1 , specifically adjusting the elevation angle of the screen frame body 10 .

[0064] Specific as Figure 4As shown, the lifting assembly includes a column 15 and a sliding sleeve 16. The bottom of the column 15 is fixedly connected to the guide trough body 1; the sliding sleeve 16 is sleeved on the column 15 and fixedly connected to the screen frame body 10. A sliding crossbeam 14 is fixed on the top of the sliding sleeve 16. A fixed crossbeam 13 is provided on the top of the column 15; a locking bolt 17 is provided through the sliding sleeve 16 and is pressed against the column 15. There are four locking bolts 17, two on each side.

[0065] In this embodiment, a lifting assembly is provided between the fixed crossbeam 13 and the sliding crossbeam 14, which is used to drive the sliding sleeve 16 to be lifted and lowered on the column 15. The lifting assembly includes a threaded barrel 19, and a handle 20 is fixed to the outer wall of the threaded barrel 19; the upper and lower ends of the threaded barrel 19 are respectively threadedly connected with an upper threaded rod 18 and a lower threaded rod 21, and the ends of the upper threaded rod 18 and the lower threaded rod 21 are rotatably connected with a connecting seat 22, and the two connecting seats 22 are respectively fixedly connected to the fixed crossbeam 13 and the sliding crossbeam 14. The operation mode of the lifting assembly is that the handle 20 is rotated to drive the threaded barrel 19 to rotate, and the threaded matching connection between the threaded barrel 19 and the upper threaded rod 18 and the lower threaded rod 21 makes the upper threaded rod 18 and the lower threaded rod 21 rise or fall inside the threaded barrel 19 when the threaded barrel 19 rotates, so as to drive the sliding sleeve 16 to move up and down on the column 15.

[0066] Furthermore, the observation method for adjusting the discharge end direction angle of the screen frame body 10 is to observe the immersion position of the screen cloth 25 in the water in the guide groove body 1. When the immersion covering position is located in the middle of the screen cloth 25, no adjustment is required. When the immersion covering position is located at the first section (the left third of the screen cloth 25), the angle needs to be reduced to increase the flow rate. When the immersion covering position is located at the tail section (the right third of the screen cloth 25), the angle needs to be increased to reduce the flow rate.

[0067] Furthermore, when the discharge end angle of the screen frame body 10 needs to be adjusted, the handle 20 is rotated counterclockwise to adjust the discharge end upward; or the handle 20 is rotated clockwise to adjust the discharge end downward. After the desired position is set, the locking bolt is tightened until the gap between the column 15 and the locking bolt 17 is closed. Furthermore, a scale is also provided on the column 15. When adjusting, the sliding sleeve 16 is located at different scales corresponding to different inclination angles of the screen frame body 10.

[0068] In this embodiment, if Figure 4 and Figure 8 As shown, the upper screen frame 11 is fixed in the following manner: a gantry connecting seat 8 is fixed on the rear side of the screen frame body 10, a keel beam 24 is fixed in the middle of the guide trough body 1, the head end of the upper screen frame 11 is fixed on the gantry connecting seat 8, and the bottom is fixed on the keel beam 24.

[0069] Furthermore, the upper screen frame 11 is bent upwards on both sides of one end close to the feeder box 3 to form a side screen frame 26, and the screen 28 covers the side screen frame 26. The side screen frame 26 is used to receive the part of the mud surging outward under the impact, while increasing the filtering area and improving the filtering effect. The front side of the side screen frame 26 is provided with a side guard plate 27 to prevent the sand from flowing out to both sides.

[0070] In this embodiment, if Figure 1 and Figure 8 As shown, the screen frame assembly includes a screen frame body 10, which is movably connected to the guide trough body 1, specifically, it is suspended between the vertical legs of the guide trough body 1 through a composite spring. A vibrator connecting frame 9 is provided on the screen frame body 10, and a vibration motor is installed on the vibrator connecting frame 9. In actual operation, impurities are easily deposited between the screen frame body 10 and the guide trough body 1, especially at the position of the composite spring, which needs to be cleaned regularly to ensure the vibration effect of the screen frame body 10 on the guide trough body 1.

[0071] An upper screen frame 11 and a lower screen frame 12 are respectively arranged at the upper and lower ends of the screen frame body 10, a screen mesh 28 is installed on the upper screen frame 11, and a screen cloth 25 is installed on the lower screen frame 12. The two ends of the screen cloth 25 are fixed to the keel beam 24 and the screen frame body 10 through a pressing plate. When the screen cloth 25 is installed, the edge of the screen cloth 25 close to one end of the keel beam 24 is first installed, and then the edge of the screen cloth 25 close to one end of the screen frame body 10 is installed. When installing the edge of the screen cloth 25 close to one end of the screen frame body 10, a screen cloth locking member 29 is arranged on the outside of the screen frame body 10, extending into the screen frame body 10 and fixed on the pressing plate close to the screen frame body 10, and the pressing plate presses the screen cloth 25 against the screen frame body 10, so that there is no gap between the screen cloth 25 and the screen frame body 10.

[0072] In this embodiment, the screen cloth locking member 29 includes a screw rod, one end of which is fixed to the pressing plate by a nut, and the other end of which is fixed to the screen frame body 10 by a nut.

[0073] In this embodiment, if Figures 9 to 17 As shown, a screen cloth adjustment assembly is provided on the screen frame body 10, and the screen cloth adjustment assembly includes a screen cloth frame 38, and the screen cloth frame 38 includes a plurality of first movable frames 381 and second movable frames 382. Fig.12As shown, the top of the second movable frame 382 is hinged to the first movable frame 381 on one side through a connecting piece 383, and the bottom of the second movable frame 382 is hinged to the first movable frame 381 on the other side through a supporting body, and the screen cloth 25 is fixed on the connecting piece 383. The screen cloth frame 38 uses a plurality of hinged first movable frames 381 and second movable frames 382, ​​and while supporting the screen cloth 25, it can also change the use form of the screen cloth 25 according to the adjustment of the screen cloth frame 38, so that the mud can also be transformed in the horizontal direction and in the vertical direction during the longitudinal sliding process of the screen cloth 25, thereby enhancing the contact effect between the mud and the screen cloth 25 and improving the filtering effect of the mud.

[0074] Furthermore, the bottom of the first movable frame 381 and the second movable frame 382 are bent outward to form a curved portion 384. When the screen cloth 25 contacts the support body, it is deformed, so that the bottom of the screen cloth 25 is embedded in the curved portion 384 to form an expansion cavity 251. Under normal conditions, the screen cloth 25 is bent by the first movable frame 381 and the second movable frame 382 to form a V-shaped groove with an acute angle at the bottom. At this time, fine sand is deposited at the acute angle and is squeezed by both sides of the screen cloth 25 to increase the sedimentation layer, reduce the flow rate of the liquid, and cause the liquid to be unable to settle quickly. By adopting the shape of the expansion cavity 251 of this embodiment, the acute angle of the bottom of the screen cloth 25 after being bent is changed from a V-shape to a horizontal and continuously curved surface. The sand flows on the horizontal and continuously curved surface, reducing the height of the sedimentation layer and ensuring the rapid sedimentation of the liquid.

[0075] Further, such as Figures 9 to 11 As shown, the screen cloth adjustment assembly also includes a driving assembly, which includes a polished rod 35, a motor 30, a slide seat 32 and a slider 34. The polished rod 35 is fixed in the inner cavity of the screen frame body 10, and the main support body 37 and the auxiliary support body 36 are slidably connected to the polished rod 35. The motor 30 is fixed on the outer wall of the screen frame body 10; the slide seat 32 is fixed at the bottom of the inner cavity of the screen frame body 10, and a reciprocating screw rod 33 is rotatably connected in the slide seat 32. The output end of the motor 30 passes through the outer wall of the screen frame body 10 and drives the reciprocating screw rod 33 to rotate forward or reversely through the driving main shaft 31; the slider 34 is rotatably connected to the reciprocating screw rod 33 and is slidably connected to the slide seat 32; the slider 34 is connected to the main support body 37; wherein, when the reciprocating screw rod 33 rotates forward or reversely, the slider 34 moves laterally to drive the main support body 37 to move left and right, as shown in FIG. Figures 9 to 11 As shown, the surface of the screen cloth 25 is continuously bent or folded at one end and nearly parallel at the other end, and the three states are continuously adjusted and changed. Fig. 9 As shown, when the slider 34 moves to the left end of the reciprocating screw rod 33, the first movable frame 381 and the second movable frame 382 on the left side of the slider 34 are bent, so that the screen cloth 25 is folded. The first movable frame 381 and the second movable frame 382 on the right side of the slider 34 are stretched, so that this part of the screen cloth 25 is unfolded and nearly parallel. Fig.10 As shown, when the slider 34 moves to the middle of the reciprocating screw rod 33, the first movable frame 381 and the second movable frame 382 on the left and right sides of the slider 34 are both bent, so that the screen cloth 25 is folded with a larger opening. Fig.11 As shown, when the slider 34 moves to the right end of the reciprocating screw 33, the first movable frame 381 and the second movable frame 382 on the right side of the slider 34 are bent, so that the screen cloth 25 is folded. The first movable frame 381 and the second movable frame 382 on the left side of the slider 34 are stretched, so that this part of the screen cloth 25 is unfolded and nearly parallel. By changing the position of the slider 34 by lateral movement, the mud flowing on the surface of the screen cloth 25 follows the change when it is adjusted, which can effectively control the flow rate and distribution of the mud, so that when the mud flows naturally downward under the vibration state, it can also be adjusted and squeezed horizontally, thereby improving the contact effect between the mud and the screen cloth 25, and improving the screening efficiency and the uniformity of the mud.

[0076] In this embodiment, the support body includes a main support body 37 and a plurality of auxiliary support bodies 36 located on both sides of the main support body 37 .

[0077] like Fig.14 and Fig.15 As shown, the auxiliary support body 36 includes a first sleeve 361, and the first sleeve 361 has a first sliding part 362 slidably connected to the light rod 35. The first sleeve 361 has cavities 367 at both ends, and the first rod 363 passes through the cavity 367. The part of the first rod 363 located in the cavity 367 is fixed with a table 366, and the table 366 is connected to the first sleeve 361 through a second spring 365. The first top block 364 is fixed to the top of the first rod 363; the first movable frame 381 and the second movable frame 382 located on both sides of the main support body 37 are hinged at the bottom to the first top block 364. Through the weight of the mud and the vibration of the screen cloth 25, the mud is evenly distributed and squeezed laterally while flowing downward on the screen cloth 25, and the vibration force can be transmitted to the second spring 365 through the first rod 363 and the machine plate 366. When the screen cloth 25 and the screen cloth frame 38 are driven by the vibration of the screen frame body 10, they can also vibrate slightly up and down on the auxiliary support body 36, forming a multiple vibration effect, thereby improving the filtering effect of the screen cloth 25.

[0078] like Fig.16 As shown, the main support body 37 includes a second sleeve 371, the second sleeve 371 has a second sliding portion 372 slidably connected to the light rod 35, second rods 373 are fixed on both sides of the top of the second sleeve 371, and a second top block 374 is fixed on the second rod 373. The screen cloth frame 38 is located in the middle and the adjacent first movable frame 381 and second movable frame 382 are hinged on the second sleeve 371 at the bottom;

[0079] like Fig.16 and Fig.17 As shown, a groove frame 375 is fixed to the bottom of the second sleeve 371, a vertical plate 377 is fixed on the slider 34, guide rods 376 are fixed at both ends of the vertical plate 377, the guide rods 376 pass through the groove frame 375, and a third spring 378 is sleeved on the guide rod 376, which abuts against the groove frame 375 and the vertical plate 377. The bottoms of the first movable frame 381 and the second movable frame 382 located in the middle and adjacent are hinged on the second sleeve 371, and the groove frame 375 at the bottom of the second sleeve 371 is connected to the vertical plate 377 through the third spring 378. Through the setting of the third spring 378, within the effective compression and advancement distance of the third spring 378, the groove frame 375 continuously moves laterally on the vertical plate 377, driving the first movable frame 381 and the second movable frame 382 located in the middle and adjacent to the screen cloth frame 38 to move laterally, so that the first movable frame 381 and the second movable frame 382 on both sides of the screen cloth frame 38 are continuously slightly compressed and stretched, forming left and right micro-vibrations of the screen cloth 25 and the screen cloth frame 38, forming multiple vibration effects, and thereby improving the filtering effect of the screen cloth 25.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibrating screen, characterized in that: include: A guide trough assembly, comprising a guide trough body (1) and a feeder mounting column (2) fixed to the rear side of the guide trough body (1); A screen frame assembly, comprising a screen frame body (10) movably connected to the guide trough body (1), the screen frame body (10) being provided with a vibrator connecting frame (9); an upper screen frame (11) and a lower screen frame (12) being provided at upper and lower ends of the screen frame body (10), a screen mesh (28) being installed on the upper screen frame (11), and a screen cloth (25) being installed on the lower screen frame (12); A lifting assembly connected to the front ends of the screen frame body (10) and the guide channel body (1), and capable of adjusting the relative angle between the screen frame body (10) and the guide channel body (1); The feeder assembly comprises a feeder housing (3) fixed on the feeder mounting column (2); the feeder housing (3) is provided with a discharge port (5); The discharge port (5) comprises a first discharge port (51) formed on the side wall of the discharge bin (301) and a second discharge port (52) formed at the bottom of the discharge bin (301); A discharge bin (301) is formed inside the feeder housing (3), and the front side wall and the rear side wall of the discharge bin (301) respectively form a first contact surface (302) and a second contact surface (303); a flap (23) is rotatably arranged inside the discharge bin (301), and a push rod (4) is arranged on the feeder housing (3), and the rotating end of the push rod (4) extends into the discharge bin (301) and is fixed to the flap (23); wherein, when the push rod (4) is pushed to the first position, the flap (23) contacts the first contact surface (302) and blocks the first discharge port (51); and when the push rod (4) is pushed to the second position, the flap (23) contacts the second contact surface (303) and blocks the second discharge port (52); The mud guard assembly comprises a mud guard (6) covering one end of the top surface of the screen frame body (10) close to the feeder box (3); the mud guard (6) is connected to the feeder box (3) via a mud guard connecting frame (7).

2. A vibrating screen according to claim 1, characterized in that: The lifting assembly comprises: A column (15) whose bottom is fixedly connected to the guide channel body (1); a fixed crossbeam (13) is provided on the top of the column (15); A sliding sleeve (16) is sleeved on the upright column (15) and fixedly connected to the screen frame body (10); a locking bolt (17) is provided through the sliding sleeve (16) and is pressed against the upright column (15); a sliding crossbeam (14) is fixed to the top of the sliding sleeve (16); A lifting assembly is provided between the fixed crossbeam (13) and the sliding crossbeam (14), the lifting assembly comprising a threaded cylinder (19), the outer wall surface of which is fixed a handle (20); the upper and lower ends of the threaded cylinder (19) are respectively threadedly connected to an upper threaded rod (18) and a lower threaded rod (21), the ends of the upper threaded rod (18) and the lower threaded rod (21) are rotatably connected to connecting seats (22), and the two connecting seats (22) are respectively fixedly connected to the fixed crossbeam (13) and the sliding crossbeam (14).

3. A vibrating screen according to claim 1, characterized in that: A gantry connection seat (8) is fixed to the rear side of the screen frame body (10), a keel beam (24) is fixed to the middle of the guide trough body (1), and the upper screen frame (11) is fixed to the gantry connection seat (8) and the keel beam (24), respectively; both sides of one end of the upper screen frame (11) close to the feeder box (3) are bent upward to form a side screen frame (26), the screen (28) covers the side screen frame (26), and a side guard plate (27) is provided on the front side of the side screen frame (26).

4. A vibrating screen according to claim 1, characterized in that: The two ends of the screen cloth (25) are fixed to the keel beam (24) and the screen frame body (10) via a pressing plate; A screen cloth locking piece (29) is provided on the outside of the screen frame body (10), extending into the screen frame body (10) and fixed on a pressing plate, and the pressing plate presses the screen cloth (25) against the screen frame body (10).

5. A vibrating screen according to claim 4, characterized in that: The screen cloth locking member (29) comprises a screw rod, one end of which is fixed to the pressure plate by a nut, and the other end of which is fixed to the screen frame body (10) by a nut.

6. A vibrating screen according to claim 1, characterized in that: The screen frame body (10) is provided with a screen cloth adjustment assembly, the screen cloth adjustment assembly comprising a screen cloth frame (38), the screen cloth frame (38) comprising a plurality of first movable frames (381) and a second movable frame (382), the top of the second movable frame (382) being hinged to the first movable frame (381) on one side via a connecting piece (383), and the bottom of the second movable frame (382) being hinged to the first movable frame (381) on the other side via a supporting body, the screen cloth (25) being fixed on the connecting piece (383), the bottom of the first movable frame (381) and the second movable frame (382) being bent outward to form a bent portion (384), the screen cloth (25) being deformed when it contacts the supporting body, so that the bottom of the screen cloth (25) is embedded in the bent portion (384) to form an expansion cavity (251); The support body comprises a main support body (37) and a plurality of auxiliary support bodies (36) located on both sides of the main support body (37).

7. A vibrating screen according to claim 6, characterized in that: The screen cloth adjustment assembly also includes a drive assembly, and the drive assembly includes: A polished rod (35) is fixed in the inner cavity of the screen frame body (10), and the main support body (37) and the auxiliary support body (36) are slidably connected to the polished rod (35); A motor (30) fixed on the outer wall of the screen frame body (10); A slide seat (32) is fixed to the bottom of the inner cavity of the screen frame body (10), a reciprocating screw rod (33) is rotatably connected to the slide seat (32), and an output end of the motor (30) penetrates the outer wall of the screen frame body (10) and drives the reciprocating screw rod (33) to rotate forward or reversely through the driving main shaft (31); A slider (34) is rotatably connected to the reciprocating screw rod (33) and slidably connected to the slide seat (32); the slider (34) is connected to the main support body (37); When the reciprocating screw (33) rotates forward or backward, the slider (34) moves laterally to drive the main support body (37) to move left and right, so that the screen cloth (25) is in a continuously bent state or in a folded state at one end and in a nearly parallel state at the other end.

8. A vibrating screen according to claim 6, characterized in that: The auxiliary support body (36) comprises a first sleeve (361), the first sleeve (361) has a first sliding portion (362) slidably connected to the light rod (35), the first sleeve (361) has cavities (367) at both ends, the cavity (367) passes through a first rod (363), a portion of the first rod (363) located in the cavity (367) is fixed with a table (366), the table (366) is connected to the first sleeve (361) via a second spring (365), and a first top block (364) is fixed to the top of the first rod (363); the first movable frame (381) and the second movable frame (382) located on both sides of the main support body (37) are hinged at the bottom to the first top block (364).

9. A vibrating screen according to claim 6, characterized in that: The main support body (37) comprises a second sleeve (371), the second sleeve (371) has a second sliding portion (372) slidably connected to the light rod (35), second rods (373) are fixed on both sides of the top of the second sleeve (371), a second top block (374) is fixed on the second rod (373), and the screen cloth frame (38) is located in the middle and adjacent to the first movable frame (381) and the second movable frame (382) and is hinged on the second sleeve (371) at the bottom; A groove frame (375) is fixed at the bottom of the second sleeve (371), a vertical plate (377) is fixed on the slider (34), guide rods (376) are fixed at both ends of the vertical plate (377), the guide rods (376) pass through the groove frame (375), a third spring (378) is sleeved on the guide rod (376), and the third spring (378) contacts the groove frame (375) and the vertical plate (377).

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