Linear vibrating screen

Abstract

The invention relates to the technical field of vibrating screen production, and particularly discloses a linear vibrating screen which comprises a rack, a stock bin, a vibrating screen assembly and an adjusting mechanism, the vibrating screen assembly comprises two screens and a vibrating motor, the two screens are arranged in an up-down inclined mode and installed on the rack through vibrating bases respectively, the vibrating motor is installed on the vibrating bases, and the adjusting mechanism is installed on the stock bin. The adjusting mechanism comprises a material guiding plate, a first driving structure, a second driving structure and a third driving structure, the material guiding plate is rotationally installed below the stock bin, a material passing opening and a baffle are arranged on the upper-layer screen, the first driving structure is used for driving the screen on the lower side to move, and the second driving structure is used for driving the baffle to act. The third driving structure is used for driving the material guiding plate to turn over. According to the mineral particle screening device, the two screens can be adjusted according to the proportion of large and small particles in mineral particles, so that the screening effect on the mineral particles is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of vibrating screen production, and particularly relates to a linear vibrating screen. Background Art

[0002] In the beneficiation process, a vibrating screen is a commonly used device, which generally includes a screen box, a screen mesh, a vibrating motor, and a support device. During use, mineral particles are added into the screen box, and an exciting force is generated by the vibrating motor to make the screen box generate linear vibration. The mineral particles jump and move forward on the screen surface. Small particle materials pass through the screen holes, and large particle materials continue to move forward and are discharged, thereby realizing the classification and screening of materials by combining vibration and gravity.

[0003] The patent document with the publication number of CN220143998U discloses a linear vibrating screen. A screen plate is installed inside the screen box. A feed hopper is fixed at the top of one end of the screen box. A discharge hopper is installed at the other end of the screen box. A discharge pipe is fixed at the bottom of the other end of the screen box. An installation frame is arranged at the bottom of the screen box. Connecting plates are symmetrically and fixedly arranged on both sides of the screen box. A connecting spring is installed between the bottom end surface of the connecting plate and the top end surface of the installation frame. A vibrating motor is installed in the middle of the bottom end surface of the screen box. A functional component is arranged at one end inside the screen box. During operation, it can be moved to the screen plate through a guide plate for moving and screening, which is convenient for improving the screening efficiency of materials. By setting a material blocking component, it is convenient to close one end of the discharge hopper, so that the un-screened materials can move to the inside of the discharge hopper through the screen plate for collection.

[0004] Although the above-mentioned vibrating screen can screen mineral particles, due to the different proportions of large and small particles in the mineral particles, it may affect the screening effect. When the proportion of large particles in the material is high, the large particle materials are likely to form a stacking layer on the screen mesh, affecting the normal falling of small particle materials and increasing the screening difficulty. When the proportion of small particles in the material is high, the small particle materials are likely to block the screen mesh, reducing the screening efficiency, and the small particle materials are likely to agglomerate and are not easily screened thoroughly, and may be mixed into the final large particle materials, affecting the screening effect of the mineral particles. Summary of the Invention

[0005] The present invention provides a linear vibrating screen, aiming to solve the problem that in the related art, when screening mineral particles, the screening effect may be affected due to the different proportions of large and small particles in the mineral particles.

[0006] A linear vibrating screen of the present invention includes a frame and a feed bin. The feed bin is installed at the upper end of the frame, and further includes a vibrating screening component and an adjusting mechanism arranged inside the frame; The vibrating screening assembly includes two screening meshes and vibrating motors. The two screening meshes are arranged obliquely up and down and are respectively installed on the frame through vibrating bases. One end of the screening mesh is located below the feed bin, and the other end extends to the outside of the frame and forms a first discharge port. The two vibrating bases are arranged at intervals up and down. Vibrating motors are arranged on both vibrating bases, and the vibrating motors are used to drive the screening mesh to vibrate reciprocally. The adjusting mechanism includes a guiding plate, a first driving structure, a second driving structure, and a third driving structure. The guiding plate is rotatably installed below the feed bin. The part of the upper screening mesh located below the feed bin is provided with a material passing port and a baffle that can close the material passing port. The first driving structure is used to drive the lower screening mesh to move so as to change the distance between the two screening meshes. The second driving structure is used to drive the baffle to act to open or close the material passing port. The third driving structure is used to drive the guiding plate to flip so that the material in the feed bin slides down along the guiding plate to the material passing port.

[0007] During screening, mineral particles are poured into the feed bin. The mineral particles are discharged from the lower end of the feed bin and fall on the higher end of the screening mesh. The screening mesh vibrates reciprocally under the action of the vibrating motor, driving the mineral particles to vibrate. During this process, particles larger than the screen holes slide down along the screening mesh and are discharged from the first discharge port for collection. Particles smaller than the screen holes pass through the screening mesh and fall to the bottom of the frame for collection. When the proportion of large particles in the material is relatively high, the distance between the two screening meshes is increased through the first driving structure, and the material passing port is opened through the second driving structure. At this time, after the material in the feed bin falls, it can be automatically distributed on the two screening meshes for screening at the same time, reducing the load on each screening mesh and increasing the service life of the screening mesh. When the proportion of small particles in the material is relatively high, the distance between the two screening meshes is reduced through the first driving structure, and the guiding plate is driven to flip through the third driving structure. At this time, all the material in the feed bin will fall on the lower screening mesh, and the material can be screened through the lower screening mesh, and the material will vibrate reciprocally between the two screening meshes to break up the agglomerated particles therein, improving the screening effect.

[0008] Preferably, an elastic member one is connected between the lower end of the upper vibrating base and the frame. A pre-tightening force adjusting rod is provided on the elastic member one, which can adjust the vibration amplitude of the screening mesh.

[0009] The effect is that it can absorb the vibration generated by the vibrating base during operation, reduce the impact on the frame and the surrounding environment, and reduce noise.

[0010] Preferably, a longitudinally arranged guiding groove one and an obliquely arranged guiding groove two are provided on the side wall of the frame. A sliding block is provided on the lower vibrating base. The vibrating base is slidably matched with the guiding groove one or the guiding groove two through the sliding block. The first driving structure includes a driving plate and a second driving member. The driving plate is located below the lower vibrating base and is in contact with the lower end of the lower vibrating base. The second driving member is arranged on the frame and is used to drive the driving plate to move up and down.

[0011] Preferably, the output end of the second driving member is connected to the driving plate through an elastic member II.

[0012] The effect is that it can absorb the impact force generated by the reciprocating vibration of the vibration base, reduce the direct impact on the second driving member, reduce the wear and noise caused by vibration, protect the second driving member from damage, and improve the service life of the equipment.

[0013] Preferably, a hinge shaft is provided at the material passing port. The hinge shaft is rotationally connected to the upper screen through a torsion spring. One side of the baffle is connected to the hinge shaft. The second driving structure includes a push rod and a contact rod. The push rod is connected to the vibration base located at the lower side. The contact rod is provided at the end of the hinge shaft. When the vibration base located at the lower side moves upward along the first guide groove, the push rod can contact the contact rod and push the contact rod to rotate.

[0014] Preferably, a mounting rod is rotatably installed at the lower end of the feed bin. The mounting rod is arranged along the width direction of the machine frame. The third driving structure includes a third driving member for driving the mounting rod to rotate. The upper end of the material guiding plate is connected to the mounting rod.

[0015] Preferably, a V-shaped strip is provided on the side of the material guiding plate for contacting the material. The tip of the V-shaped strip faces the upper end of the material guiding plate.

[0016] The effect is that it can guide the material falling from the feed bin, so that the material falls to both sides of the screen, and avoid the material from accumulating in the middle part of the screen.

[0017] Preferably, the screw conveyor includes a conveying cylinder, a screw blade and a first driving member. The conveying cylinder is inclined and installed on the machine frame. One end of the conveying cylinder extends into the interior of the machine frame, and the other end extends to the outside of the machine frame and forms a second discharge port. The screw blade is rotatably installed inside the conveying cylinder, and the screw blade is in transmission connection with the first driving member.

[0018] Preferably, a receiving plate for receiving sand particles is installed below the screen. The receiving plate is V-shaped. The end of the conveying cylinder located inside the machine frame is at the tip of the receiving plate.

[0019] Preferably, both the receiving plate and the side wall of the conveying cylinder located inside the machine frame are provided with sieve holes. A slurry discharge port is provided at the bottom of the machine frame.

[0020] The effect is that for a mixture of certain mineral particles and water, during the process of the screw conveyor transporting the screened small particle materials, solid-liquid separation can be achieved through the sieve holes.

[0021] The beneficial effects of the present invention are: 1. When the proportion of large particles in the material is relatively high, through the cooperation of the screening vibration assembly and the adjustment mechanism, the material can be distributed on two sieve meshes for screening simultaneously, reducing the amount of material borne by each sieve mesh, lowering the load on each sieve mesh, being conducive to improving the service life of the sieve mesh, and at the same time reducing the possibility of large particle materials accumulating on the sieve mesh and improving the screening efficiency.

[0022] 2. When the proportion of small particles in the material is relatively high, through the cooperation of the screening vibration assembly and the adjustment mechanism, the material can be guided to the lower sieve mesh for screening, and the material can vibrate up and down between the two sieve meshes. This can enable large particle materials to impact and break the caked materials therein, so that the mineral particles can be thoroughly screened. At the same time, the particles blocked in the sieve mesh can be cleared out to avoid the sieve mesh being blocked and affecting the screening efficiency.

[0023] 3. When only simple screening of the material is required, the material can be screened once through the upper sieve mesh or the lower sieve mesh to ensure the screening efficiency. When it is necessary to improve the screening accuracy of the material, the material can be screened twice through the upper and lower sieve meshes, or the aperture can be reduced by overlapping the two sieve meshes up and down to improve the screening accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the present invention.

[0025] Figure 2 is the front view of the present invention.

[0026] Figure 3 is the schematic diagram of the vibration screening assembly of the present invention in State 1.

[0027] Figure 4 is the schematic diagram of the vibration screening assembly of the present invention in State 2.

[0028] Figure 5 is the schematic diagram of the vibration screening assembly of the present invention in State 3.

[0029] Figure 6 is the structural schematic diagram of the vibration screening assembly of the present invention.

[0030] Figure 7 is the assembly structural schematic diagram of the material guiding plate and the feed bin of the present invention.

[0031] Reference Signs: 1. Frame; 11. Hopper; 12. First discharge port; 13. First guide groove; 14. Second guide groove; 15. Screw conveyor; 151. Conveyor tube; 152. Screw blade; 153. First driving member; 16. Second discharge port; 17. Material receiving plate; 18. Slurry discharge port; 21. Screen; 211. Material passing port; 212. Hinge shaft; 22. Vibration motor; 23. Vibration base; 231. Slide block; 24. First elastic member; 25. Driving plate; 26. Second driving member; 27. Second elastic member; 31. Guide plate; 311. V-shaped strip; 32. Baffle; 33. Push rod; 34. Contact rod; 35. Mounting rod; 36. Third driving member. Detailed implementation mode

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0033] As Figures 1 to 7 shown, a linear vibrating screen of the present invention includes a frame 1, a hopper 11, a vibrating screening assembly, and an adjusting mechanism.

[0034] The hopper 11 is used to receive the mineral particles to be screened and guide them to the vibrating screening assembly. The vibrating screening assembly is used to screen the mineral particles to achieve the separation of large and small particles. The adjusting mechanism is used to adjust the vibrating screening assembly so that it can screen mineral particles in different states.

[0035] As Figures 1 to 6 shown, the hopper 11 is installed at the upper end of the frame 1. The upper end of the hopper 11 is provided with a feed port, and the lower end of the hopper 11 is provided with a discharge port. The vibrating screening assembly includes two screens 21 and a vibration motor 22. The two screens 21 are arranged obliquely up and down and are respectively installed on the frame 1 through vibration bases 23. The higher end of the screen 21 is located below the hopper 11, and the other end extends to the outside of the frame 1 and forms a first discharge port 12. The two vibration bases 23 are arranged at intervals up and down. Vibration motors 22 are obliquely installed on the two vibration bases 23. The vibration motor 22 is used to drive the screen 21 to reciprocate in a direction perpendicular to the inclination of the vibration motor 22.

[0036] Specifically, during operation, the mineral particles to be screened are poured into the hopper 11. The mineral particles will be discharged from the discharge port below the hopper 11 and fall on the higher end of the screen 21. The screen 21 reciprocates under the action of the vibration motor 22, driving the mineral particles on the screen 21 to vibrate. During this process, the particles larger than the screen holes will slide down along the inclined screen 21 and be discharged from the first discharge port 12 for collection, while the particles smaller than the screen holes will pass through the screen 21 and fall to the bottom of the frame 1 for collection, realizing the separation of large particle materials and small particle materials.

[0037] As shown Figures 3 to 7 in the figure, the adjusting mechanism includes a material guiding plate 31, a first driving structure, a second driving structure and a third driving structure. The material guiding plate 31 is rotatably installed at the discharge port provided at the lower end of the material bin 11. A material passing port 211 and a baffle plate 32 capable of closing the material passing port 211 are provided on the upper layer sieve mesh 21. The material passing port 211 is located below the material bin 11. The first driving structure is used to drive the lower layer sieve mesh 21 to move so as to change the distance between the two sieve meshes 21. The second driving structure is used to drive the baffle plate 32 to act so that the material passing port 211 is in an open or closed state. The third driving structure is used to drive the material guiding plate 31 to turn over so that the materials in the material bin 11 can slide along the material guiding plate 31 to the material passing port 211.

[0038] Specifically, when the proportion of large particles in the materials is relatively high, the lower layer sieve mesh 21 is driven by the first driving structure to move, so that the distance between the two sieve meshes 21 is increased, and the baffle plate 32 is driven by the second driving structure to act, so that the material passing port 211 is opened. The vibrating screening assembly in this state is defined as state one. At this time, after the materials in the material bin 11 are discharged from the lower discharge port, a part of the materials can directly fall on the upper layer sieve mesh 21, and another part of the materials can fall on the lower layer sieve mesh 21 through the material passing port 211, so that the screening can be carried out simultaneously through the upper and lower two sieve meshes 21. By distributing the materials to the two sieve meshes 21, the amount of materials borne by each sieve mesh 21 can be reduced, thereby reducing the load of each sieve mesh 21 and being beneficial to improving the service life of the sieve mesh 21. At the same time, the possibility of material accumulation on the sieve mesh 21 can also be reduced, and the screening efficiency can be improved. During this process, the material guiding plate 31 can be driven by the third driving structure to turn over to disperse the materials on the sieve mesh 21, avoid the materials from accumulating between the lower end of the material bin 11 and the sieve mesh 21, and ensure the smooth progress of screening.

[0039] When the proportion of small particles in the materials is relatively high, the lower layer sieve mesh 21 is driven by the first driving structure to move, so that the distance between the two sieve meshes 21 is reduced, and the baffle plate 32 is driven by the second driving structure to act, so that the material passing port 211 is in an open state. At the same time, the material guiding plate 31 is driven by the third driving structure to turn over and keep it in the turned-over state. The vibrating screening assembly in this state is defined as state two. At this time, the materials falling from the material bin 11 will all fall on the lower layer sieve mesh 21 under the guiding action of the material guiding plate 31. During the reciprocating vibration of the sieve mesh 21, due to the small distance between the two sieve meshes 21, the materials will vibrate up and down between the two sieve meshes 21, and the caked materials therein can be impacted and broken to achieve the thorough screening of the materials. In addition, through the reciprocating vibration of the materials, the materials blocked in the sieve mesh 21 can be cleaned out to avoid the influence of sieve mesh 21 blockage on the screening efficiency.

[0040] When the volume difference between large-particle materials and small-particle materials is small, or when it is necessary to improve the screening accuracy, the material passing port 211 is in a closed state, and the two screening meshes 21 are arranged at intervals up and down, or are arranged overlapping up and down under the action of the first driving structure. When the two screening meshes 21 are arranged at intervals up and down, the materials falling from the material bin 11 can be initially screened by the upper screening mesh 21, and then re-screened by the lower screening mesh 21 to improve the screening accuracy. When the two screening meshes 21 are arranged overlapping up and down, the aperture of the overlapping screening meshes 21 will be reduced, which can improve the screening accuracy and ensure the screening efficiency.

[0041] As Figures 1 to 3 shown, an elastic member 24 is connected between the lower end of the upper vibration base 23 and the frame 1. The elastic member 24 can be set as a spring. The spring can absorb the vibration generated by the vibration base 23 during operation, reduce the impact on the frame 1 and the surrounding environment, and reduce noise. A pre-tightening force adjusting rod is provided on the elastic member 24, which can adjust the vibration amplitude of the screening mesh 21, thereby improving the screening accuracy.

[0042] As Figures 3 to 6 shown, a longitudinally arranged first guiding groove 13 is provided on the side wall of the frame 1, and a sliding block 231 is provided on the lower vibration base 23. The vibration base 23 is slidably engaged with the first guiding groove 13 through the sliding block 231. The first driving structure includes a driving plate 25 and a second driving member 26. The driving plate 25 is located below the lower vibration base 23 and is in contact with the lower end of the lower vibration base 23. The second driving member 26 is provided on the frame 1 and is used to drive the driving plate 25 to move up and down.

[0043] Specifically, the second driving member 26 can be set as an electric push rod. The output end of the electric push rod extends vertically upward and is connected to the driving plate 25. When the electric push rod is started to drive the driving plate 25 to move upward, the lower vibration base 23 can be pushed to move upward along the first guiding groove 13 through the contact between the driving plate 25 and the vibration base 23, and the lower-layer screen 21 can be driven to move upward, reducing the distance between the two screens 21. When the electric push rod is started to drive the driving plate 25 to move downward, the lower vibration base 23 can move downward along the first guiding groove 13 under the action of gravity and drive the lower-layer screen 21 to move downward, increasing the distance between the two screens 21. Therefore, when the proportion of large particles in the material is relatively high, the distance between the two screens 21 can be increased, and the material can be screened simultaneously by the upper and lower screens 21, reducing the load on the screen 21 and improving the screening efficiency. When the proportion of small particles in the material is relatively high, the distance between the two screens 21 can be reduced, so that all the material falls on the lower-layer screen 21 for screening, and the material vibrates up and down between the two screens 21, breaking up the agglomerated material and cleaning the screen 21. In addition, when it is necessary to improve the screening accuracy, the material can be screened twice by the upper and lower screens 21, or the two screens 21 can be overlapped up and down to reduce the aperture to improve the screening accuracy.

[0044] As Figures 3 to 6 shown, an inclined second guiding groove 14 is further provided on the side wall of the frame 1. The end of the first guiding groove 13 located on the upper side is defined as the head end, and the other end is defined as the tail end. The head end of the second guiding groove 14 is transitionally connected to the tail end of the first guiding groove 13, and the vibration base 23 can be slidably matched with the second guiding groove 14 through the slider 231.

[0045] Specifically, when the slider 231 slides along the first guiding groove 13, the lower vibration base 23 is located directly below the upper vibration base 23. At this time, the two screens 21 overlap in the vertical projection direction. During the process of the slider 231 moving from the head end to the tail end along the second guiding groove 14, the lower vibration base 23 gradually moves obliquely downward to the upper vibration base 23, so that the overlapping part of the two screens 21 in the vertical projection direction gradually decreases. Therefore, for some materials that only need simple screening, the vibration base 23 can be driven by the first driving structure to move to the tail end of the second guiding groove 14. Define the vibration screening assembly in this state as state three. At this time, the overlapping part of the upper and lower screens 21 decreases, and the material falling from the bin 11 is only screened once by the upper screen 21, which is beneficial to improving the screening efficiency.

[0046] Among them, the output end of the second driving member 26 is connected to the driving plate 25 through the second elastic member 27, and the second elastic member 27 can be set as a spring. The spring can absorb the impact force generated due to the reciprocating vibration of the vibration base 23, reduce the direct impact on the second driving member 26, reduce the wear and noise caused by vibration, and protect the second driving member 26 from damage.

[0047] As Figures 1 to 5 shown, a hinge shaft 212 is provided at the material passing port 211. The hinge shaft 212 is rotatably connected to the upper layer of the screen 21 through a torsion spring, and one side of the baffle 32 is connected to the hinge shaft 212. The second driving structure includes a push rod 33 and a contact rod 34. The push rod 33 is connected to the lower vibration base 23, and the contact rod 34 is provided at the end of the hinge shaft 212. When the lower vibration base 23 moves upward along the first guide groove 13, the push rod 33 can contact the contact rod 34 and push the contact rod 34 to rotate.

[0048] Specifically, in the initial state, the baffle 32 is arranged parallel to the upper layer of the screen 21 to close the material passing port 211. At this time, the contact rod 34 is in a horizontal state. When starting the second driving member 26 to drive the driving plate 25 to move upward, it can push the lower vibration base 23 to move upward along the first guide groove 13 through the contact between the driving plate 25 and the vibration base 23, and drive the push rod 33 provided on the vibration base 23 to move. When the push rod 33 contacts the contact rod 34, as the push rod 33 continues to move upward, it will push the contact rod 34 to rotate, making the contact rod 34 rotate to a vertical state. As the contact rod 34 rotates, it will drive the hinge shaft 212 and the baffle 32 to rotate, and cause the torsion spring to twist and store energy until the baffle 32 rotates to a vertical state, opening the material passing port 211. At this time, the material falling from the material bin 11 can directly fall on the upper layer of the screen 21 or fall on the lower layer of the screen 21 through the material passing port 211. When starting the second driving member 26 to drive the driving plate 25 to move downward, it will drive the push rod 33 to move downward. When the contact rod 34 is released from the acting force of the push rod 33, it can drive the hinge shaft 212 and the baffle 32 to rotate reversely and reset under the action of the released energy of the torsion spring until the baffle 32 closes the material passing port 211 again.

[0049] As Figures 1 to 4 、 Figure 7 shown, an installation rod 35 is rotatably installed at the lower end of the material bin 11. The installation rod 35 is arranged along the width direction of the machine frame 1. The third driving structure includes a third driving member 36 for driving the installation rod 35 to rotate. The third driving member 36 can be set as a motor. The motor is installed at the lower end of the material bin 11, and the output end is connected to the installation rod 35. The upper end of the guide plate 31 is connected to the installation rod 35. A V-shaped strip 311 is provided on the side of the guide plate 31 for contacting the material, and the tip of the V-shaped strip 311 faces the upper end of the guide plate 31.

[0050] Specifically, in the initial state, the guide plate 31 is in a vertical position, with a gap between the lower end of the guide plate 31 and the upper screen 21 for material to pass through. When screening the material, the drive member 36 is activated to rotate the mounting rod 35, which causes the guide plate 31 to flip. As the guide plate 31 flips, material falling from the silo 11 contacts the V-shaped bars 311 on the guide plate 31 and, guided by the V-shaped bars 311, falls to the sides of the screen 21, preventing material from accumulating in the middle of the screen 21. Furthermore, the swinging of the guide plate 31 can disperse material that has fallen onto the screen 21, preventing it from accumulating on the screen 21 below the silo 11, thereby ensuring smooth screening of the material.

[0051] When the material contains a high proportion of large particles, the guide plate 31 swings under the action of the third drive member 36, combing and guiding the material falling from the silo 11. At this time, a portion of the material will fall directly onto the upper screen 21, and the other portion will fall onto the lower screen 21 through the material opening 211. It can be screened simultaneously through both screens 21, reducing the load on the screen 21 and improving the screening efficiency. When the material contains a high proportion of small particles, the guide plate 31 flips under the action of the third drive member 36 and remains in the flipped state, guiding the material falling from the silo 11. At this time, all the material will fall onto the lower screen 21 through the material opening 211. The vibration of the screen 21 can cause the material to vibrate back and forth between the two screens 21, breaking up the agglomerated material therein, ensuring the complete separation of large and small materials, and impacting the screen 21 to clear out particles blocked in the screen 21, ensuring the screening efficiency of the material.

[0052] During the mineral processing process, it may be necessary to screen materials such as slurry or tailings. Slurry and tailings are a mixture of mineral particles and water. When they are screened through the screen 21, only large and small particles can be separated, but solid particles cannot be effectively separated from water. Figures 1 to 6 As shown, a screw conveyor 15 and a receiving plate 17 are provided on the frame 1. The screw conveyor 15 includes a conveying cylinder 151, an auger blade 152 and a driving member 153. The conveying cylinder 151 is installed on the frame 1 at an angle, with one end of the conveying cylinder 151 extending to the inside of the frame 1 and the other end extending to the outside of the frame 1 and forming a discharge port 16. The auger blade 152 is rotatably installed inside the conveying cylinder 151, and the auger blade 152 is transmission-connected to the driving member 153. The receiving plate 17 is installed below the screen 21 for receiving small particle materials. The receiving plate 17 is V-shaped, and one end of the conveying cylinder 151 located inside the frame 1 is at the tip of the receiving plate 17. The receiving plate 17 and the side walls of the conveying cylinder 151 located inside the frame 1 are both provided with sieve holes, and the bottom of the frame 1 is provided with a slurry discharge port 18.

[0053] During screening, particles larger than the sieve holes will slide down along the inclined sieve mesh 21 and be discharged from the first discharge port 12 for collection. Particles and pulp water smaller than the sieve holes will pass through the sieve mesh 21 and fall onto the receiving plate 17, then slide down along the receiving plate 17 to the tip, and then enter the conveying cylinder 151. Start the first driving member 153 to drive the auger blade 152 to rotate, which can convey this part of the material. During the conveying process, the pulp water will flow through the sieve holes on the receiving plate 17 and the conveying cylinder 151 to the lower part of the receiving plate 17, and then be discharged through the pulp discharge port 18. The small particle material can be lifted upward by the auger blade 152 in the conveying cylinder 151 and then discharged from the second discharge port 16.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A linear vibrating screen, comprising a frame (1) and a silo (11), the silo (11) being installed at the upper end of the frame (1), characterized in that, It further includes a vibration screening assembly and an adjustment mechanism disposed within the frame (1); The vibration screening assembly includes two screen meshes (21) and vibration motors (22). The two screen meshes (21) are arranged obliquely up and down and are respectively mounted on the frame (1) through vibration bases (23). One end of the screen mesh (21) is located below the silo (11), and the other end extends to the outside of the frame (1) to form a first discharge port (12). The two vibration bases (23) are arranged at intervals up and down, and vibration motors (22) are provided on both vibration bases (23). The vibration motors (22) are used to drive the screen mesh (21) to vibrate reciprocally; The adjustment mechanism includes a guide plate (31), a first driving structure, a second driving structure, and a third driving structure. The guide plate (31) is rotatably mounted below the silo (11). A material passing port (211) and a baffle (32) capable of closing the material passing port (211) are provided at the portion of the upper screen mesh (21) located below the silo (11). The first driving structure is used to drive the lower screen mesh (21) to move so as to change the distance between the two screen meshes (21). The second driving structure is used to drive the baffle (32) to act to open or close the material passing port (211). The third driving structure is used to drive the guide plate (31) to flip so that the material in the silo (11) slides along the guide plate (31) to the material passing port (211).

2. The linear vibrating screen according to claim 1, wherein, A first elastic member (24) is connected between the lower end of the upper vibration base (23) and the frame (1). A pre-tightening force adjusting rod is provided on the first elastic member (24) to adjust the vibration amplitude of the screen mesh (21).

3. A linear vibrating screen according to claim 1, characterized in that, A longitudinally arranged first guide groove (13) and an obliquely arranged second guide groove (14) are provided on the side wall of the frame (1). A slider (231) is provided on the lower vibration base (23). The vibration base (23) is slidably engaged with the first guide groove (13) or the second guide groove (14) through the slider (231). The first driving structure includes a driving plate (25) and a second driving member (26). The driving plate (25) is located below the lower vibration base (23) and is in contact with the lower end of the lower vibration base (23). The second driving member (26) is provided on the frame (1) and is used to drive the driving plate (25) to move up and down.

4. A linear vibrating screen according to claim 3, wherein The output end of the second driving member (26) is connected to the driving plate (25) through a second elastic member (27).

5. A linear vibrating screen according to claim 3, characterized in that, A hinge shaft (212) is provided at the material passing port (211). The hinge shaft (212) is rotatably connected to the upper screen mesh (21) through a torsion spring. One side of the baffle (32) is connected to the hinge shaft (212). The second driving structure includes a push rod (33) and a contact rod (34). The push rod (33) is connected to the lower vibration base (23). The contact rod (34) is connected to the end of the hinge shaft (212). When the lower vibration base (23) moves upward along the first guide groove (13), the push rod (33) can contact the contact rod (34) and push the contact rod (34) to rotate.

6. A linear vibrating screen according to claim 1, characterized in that, An installation rod (35) is rotatably installed at the lower end of the silo (11). The installation rod (35) is arranged along the width direction of the frame (1). The third driving structure includes a third driving member (36) for driving the installation rod (35) to rotate. The upper end of the material guiding plate (31) is connected to the installation rod (35).

7. A linear vibrating screen according to claim 1, characterized in that, On the side of the material guiding plate (31) for contacting the material, there is a V-shaped strip (311), and the tip of the V-shaped strip (311) faces the upper end of the material guiding plate (31).

8. A linear vibrating screen according to claim 1, characterized in that, A screw conveyor (15) is installed on the frame (1). The screw conveyor (15) includes a conveying cylinder (151), a screw blade (152), and a first driving member (153). The conveying cylinder (151) is inclined and installed on the frame (1). One end of the conveying cylinder (151) extends into the interior of the frame (1), and the other end extends to the outside of the frame (1) to form a second discharge port (16). The screw blade (152) is rotatably installed inside the conveying cylinder (151), and the screw blade (152) is in transmission connection with the first driving member (153).

9. A linear vibrating screen according to claim 8, characterized in that, Below the screen (21), there is a material receiving plate (17) for receiving sand particles. The material receiving plate (17) is V-shaped, and the end of the conveying cylinder (151) located inside the frame (1) is at the tip of the material receiving plate (17).

10. A linear vibrating screen according to claim 9, characterized in that, Both the material receiving plate (17) and the side wall of the conveying cylinder (151) located inside the frame (1) are provided with sieve holes, and a slurry discharge port (18) is provided at the bottom of the frame (1).

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