Double-shaft vibrating screen with uniform screening function

Abstract

The double-shaft vibrating screen with the uniform screening function comprises a screen box and a supporting frame, the screen box is located at the top of the supporting frame, the whole screen box is arranged in an inclined state, a discharging opening of the screen box is located at the low position, a feeding assembly is installed at one end of the top of the screen box, and a discharging assembly is installed at the other end of the top of the screen box. The feeding assembly comprises a supporting ring fixedly connected with one end of the top of the screen box, the supporting ring is parallel to the screen box, a hopper is rotationally connected into the supporting ring through a bearing, an opening in the bottom of the hopper extends into the screen box, and a forward and reverse rotation motor is fixedly installed outside the supporting ring. According to the vibrating screen, due to the fact that the feeding assembly is arranged, materials can be evenly distributed on the top of the screen, all the screened materials can be evenly screened, and the problem that due to accumulation of the materials, screening is incomplete is avoided.

Description

A biaxial vibrating screen with uniform screening function Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically a dual-axis vibrating screen with uniform screening function. Background Technology

[0002] A vibrating screen works by using the reciprocating rotary vibration generated by the vibrator, while the lower rotating weight causes the screen surface to vibrate in a conical manner. The combined effect of these two actions causes the screen surface to reciprocate. When the screen frame vibrates, particles of different shapes fall through the screen holes of different diameters, while larger particles remain on the surface.

[0003] A search revealed a utility model patent with Chinese patent publication number CN216174059U, which discloses a vibrating screen with multi-stage screening function. The screen includes a base, an inclined housing on the upper part of the base, a vibrator fixedly mounted on the housing, a first screen and a second screen respectively inclinedly and fixedly connected to the upper and lower ends of the vertical inner walls of the housing, a receiving hopper bolted to the lower part of the housing, and a movable block located at one end of the housing between the first screen and the second screen.

[0004] When using the above-mentioned device, the material is usually poured directly into the machine casing, which will cause the material to accumulate and be unevenly distributed on the screen surface. It is possible that when the material moves to the lowest position along the slope, a small part of the material will not be screened, affecting the uniformity of screening. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-axis vibrating screen with uniform screening function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-shaft vibrating screen with uniform screening function, comprising a screen box and a support frame. The screen box is located at the top of the support frame and is set in an inclined state, with the discharge port of the screen box at a low position. A feeding assembly is installed at one end of the top of the screen box. The feeding assembly includes a support ring fixedly connected to one end of the top of the screen box, and the support ring is set parallel to the screen box. A hopper is rotatably connected inside the support ring through a bearing, and the opening at the bottom of the hopper extends into the interior of the screen box. A forward and reverse motor is fixedly installed outside the support ring. A bevel gear is coaxially fixed at the output end of the forward and reverse motor. A bevel gear ring adapted to the bevel gear is coaxially fixed on the outer circumference of the hopper.

[0007] The material can be evenly distributed on the top of the screen, ensuring uniform screening and preventing incomplete screening due to material accumulation. The forward and reverse motors drive the bevel gears to rotate one revolution forward and then one revolution backward, repeating this process. The bevel gears mesh to drive the bevel gear ring to rotate at a certain angle and then in the opposite direction. The hopper is also driven by the bevel gear ring to swing synchronously, continuously changing the material's trajectory through the hopper opening, ensuring even distribution on the top of the screen. This maximizes the area utilized by the screen and maintains a relatively constant material thickness, further improving the device's uniform screening performance.

[0008] As a further preferred embodiment of this technical solution, two screens are installed inside the screen box, and a striking assembly is installed inside the screen box. The striking assembly includes two mounting rods rotatably connected inside the screen box. The two mounting rods are respectively located at the bottom of the two screens. Two connecting straps are fixedly connected to the outer circumference of each of the two mounting rods, and a striking hammer is fixedly connected to the ends of the two connecting straps that are far apart from each other.

[0009] As a further preferred embodiment of this technical solution, the output end of the forward and reverse motor is fixedly fitted with a pulley two, and each of the two mounting rods has a pulley one fixed coaxially at its outer end. The pulley two and the top pulley are fitted with the same belt two, and the two pulleys are fitted with the same belt one.

[0010] When the motor operates in both directions, it drives pulley two to rotate synchronously. Pulley two drives pulley one above it to rotate via belt two. This pulley one then drives another pulley one below it to rotate synchronously via belt one. These two pulleys one are connected to two mounting rods, causing the mounting rods to rotate synchronously as well. During rotation, the mounting rods drive the striking hammer via a connecting belt, causing the striking hammer to strike the bottom wall of the screen. Since some material may be stuck in the screen's mesh, this striking action can dislodge the stuck material.

[0011] As a further preferred embodiment of this technical solution, each of the four corners at the top of the support frame is fixedly connected to a spring, and all four springs are fixedly connected to the screen box. Two parallel vibrating motors are installed at the bottom of the screen box, and the two vibrating motors have the same specifications.

[0012] As a further preferred embodiment of this technical solution, an inclined guide plate is fixedly connected to one side of the inner wall of the sieve box, and the guide plate is located between two sieves.

[0013] As a further preferred embodiment of this technical solution, the transmission ratio between pulley two and pulley one is less than one.

[0014] As a further preferred embodiment of this technical solution, the striking hammer is made of rubber material.

[0015] This utility model provides a dual-axis vibrating screen with uniform screening function, which has the following beneficial effects:

[0016] (1) By setting up a feeding component, the material can be evenly distributed on the top of the screen, so that the material being screened can be evenly screened, avoiding the problem of incomplete screening caused by material accumulation. When the forward and reverse motor is started, the forward and reverse motor drives the bevel gear to rotate one revolution in the forward direction and then one revolution in the reverse direction. This process is repeated. The bevel gear drives the bevel gear ring to rotate a certain angle through meshing and then rotates in the reverse direction. The hopper will also be driven by the bevel gear ring to swing synchronously. The trajectory of the material falling through the hopper opening will continue to change and be evenly distributed on the top of the screen, so that the area of ​​the screen used is large enough and the thickness of the material is relatively constant, which can further improve the uniform screening performance of the device.

[0017] (2) By setting up a striking component, the present invention drives the second pulley to rotate synchronously when the forward and reverse motor is running. The second pulley drives the first pulley above to rotate via the second belt, and this first pulley in turn drives the second pulley below to rotate synchronously via the first belt. These two pulleys are respectively connected to two mounting rods, so that the mounting rods also rotate synchronously. During the rotation of the mounting rods, the striking hammer is driven to move through the connecting belt, so that the striking hammer strikes the bottom wall of the screen. Since some materials may be stuck in the gaps of the screen, this striking action can shake out the stuck materials. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 is an enlarged structural schematic diagram of point A in Figure 1 of this utility model;

[0021] Figure 4 is an enlarged structural schematic diagram of point B in Figure 2 of this utility model;

[0022] In the diagram: 1. Screen box; 2. Support frame; 3. Spring; 4. Vibrating motor; 5. Screen; 6. Feeding assembly; 7. Impact assembly; 601. Support ring; 602. Hopper; 603. Bevel gear ring; 604. Forward and reverse motor; 605. Bevel gear; 701. Mounting rod; 702. Connecting belt; 703. Impact hammer; 704. Pulley 1; 705. Belt 1; 706. Pulley 2; 707. Belt 2. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] The present invention provides the following technical solution: As shown in Figures 2 and 3, in this embodiment, a dual-shaft vibrating screen with uniform screening function includes a screen box 1 and a support frame 2. The screen box 1 is located at the top of the support frame 2. The screen box 1 is set in an inclined state, and the discharge port of the screen box 1 is located at a low position. A feeding component 6 is installed at one end of the top of the screen box 1. The feeding component 6 includes a support ring 601 fixedly connected to one end of the top of the screen box 1. The support ring 601 is parallel to the screen box 1. A hopper 602 is rotatably connected inside the support ring 601 through a bearing. The opening at the bottom of the hopper 602 extends into the interior of the screen box 1. A forward and reverse motor 604 is fixedly installed outside the support ring 601. A bevel gear 605 is coaxially fixed at the output end of the forward and reverse motor 604. A bevel gear ring 603 adapted to the bevel gear 605 is coaxially fixed on the outer circumference of the hopper 602.

[0025] The material is directly discharged into the hopper 602, then slides along the slope of the hopper 602 towards the bottom opening, and then falls into the screen box 1 through the opening. At the same time, the forward and reverse motor 604 is started. The forward and reverse motor 604 drives the bevel gear 605 to rotate one revolution in the forward direction and then one revolution in the reverse direction. This process is repeated. The bevel gear 605 drives the bevel gear ring 603 to rotate a certain angle through meshing and then rotate in the reverse direction. The hopper 602 is also driven by the bevel gear ring 603 to swing synchronously. The trajectory of the material falling through the opening of the hopper 602 will continuously change and be evenly distributed on the top of the screen 5, so that the area of ​​the screen 5 is utilized is large enough and the thickness of the material is relatively constant, which can further improve the uniform screening performance of the device.

[0026] As shown in Figures 1 and 3, two screens 5 are installed inside the screen box 1. A striking component 7 is also installed inside the screen box 1. The striking component 7 includes two mounting rods 701 that are rotatably connected inside the screen box 1. The two mounting rods 701 are located at the bottom of the two screens 5 respectively. Two connecting strips 702 are fixedly connected to the outer circumference of each of the two mounting rods 701. A striking hammer 703 is fixedly connected to the ends of the two connecting strips 702 that are far apart from each other.

[0027] The output end of the forward and reverse motor 604 is fixedly fitted with a pulley 706. The two mounting rods 701 are each coaxially fixed with a pulley 704 at their outer ends. The pulley 706 and the top pulley 704 are fitted with the same belt 707. The two pulleys 704 are fitted with the same belt 705.

[0028] When the reversible motor 604 is running, it drives pulley 706 to rotate synchronously. Pulley 706 drives pulley 704 above it via belt 707. This pulley 704 then drives another pulley 704 below it to rotate synchronously via belt 705. These two pulleys 704 are connected to two mounting rods 701, causing the mounting rods 701 to rotate synchronously as well. During rotation, the mounting rods 701 drive the striking hammer 703 via the connecting belt 702, causing the striking hammer 703 to strike the bottom wall of the screen 5. Since some material may get stuck in the gaps of the screen 5, this striking action can dislodge the stuck material. The connecting belt 702 is flexible, ensuring that after striking the screen 5, the striking hammer 703 can smoothly pass through the gap between the mounting rod 701 and the screen 5, without jamming and affecting the normal operation of the entire device.

[0029] As shown in Figures 1 and 2, a spring 3 is fixedly connected to each of the four corners at the top of the support frame 2. All four springs 3 are fixedly connected to the screen box 1. Two parallel vibrating motors 4 are installed at the bottom of the screen box 1. The two vibrating motors 4 have the same specifications. By controlling the start of the two vibrating motors 4, various forms of screen surface movement trajectories can be generated with the cooperation of the springs 3, so that the material can be more evenly distributed and more fully screened on the screen surface.

[0030] As shown in Figure 2, an inclined guide plate is fixedly connected to one side of the inner wall of the screen box 1, and the guide plate is located between the two screens 5, which can prevent the material passing through the top screen 5 from not being processed in time and causing incomplete screening.

[0031] As shown in Figure 2, the transmission ratio between pulley 2 706 and pulley 1 704 is less than one. When pulley 2 706 rotates once, it will drive pulley 1 704 to rotate multiple times, which can increase the rotational speed of pulley 1 704 and thus increase the striking force of the hammer 703.

[0032] As shown in Figure 4, the hammer 703 is made of rubber material, which can prevent the screen 5 from being damaged when the hammer 703 hits the screen 5.

[0033] This utility model provides a dual-axis vibrating screen with uniform screening function, and its specific working principle is as follows:

[0034] When the device is working, the material is directly discharged into the hopper 602, then slides along the slope of the hopper 602 towards the bottom opening, and then falls into the screen box 1 through the opening. At the same time, the forward and reverse motor 604 is started. The forward and reverse motor 604 drives the bevel gear 605 to rotate one revolution in the forward direction and then one revolution in the reverse direction. This process repeats. The bevel gear 605 drives the bevel gear ring 603 to rotate a certain angle and then rotate in the reverse direction. The hopper 602 is also driven by the bevel gear ring 603 to swing synchronously. The trajectory of the material falling through the opening of the hopper 602 will continuously change, and be evenly distributed on the top of the screen 5, so that the area of ​​the screen 5 is utilized sufficiently large and the thickness of the material is relatively constant, which can further improve the uniform screening performance of the device. When the forward and reverse motor 604 is running, it will drive the second pulley 706 to rotate synchronously. The second pulley 706 drives the upper pulley 704 to rotate through the second belt 707. This first pulley 704 then drives the lower pulley 704 to rotate synchronously through the first belt 705. The two pulleys 704 are respectively connected to the two mounting rods 701, causing the mounting rods 701 to rotate synchronously. During the rotation of the mounting rods 701, the connecting belt 702 drives the striking hammer 703 to move, causing the striking hammer 703 to strike the bottom wall of the screen 5. Since some materials may get stuck in the gaps of the screen 5, this striking action can shake the stuck materials out. The connecting belt 702 is soft, which ensures that after striking the screen 5, the striking hammer 703 can smoothly pass through the gap between the mounting rod 701 and the screen 5, without affecting the normal operation of the entire device due to jamming.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-shaft vibrating screen with uniform screening function, comprising a screen box (1) and a support frame (2), characterized in that: The screen box (1) is located at the top of the support frame (2). The screen box (1) is set in an inclined state, and the discharge port of the screen box (1) is at a low position. A feeding assembly (6) is installed at one end of the top of the screen box (1). The feeding assembly (6) includes a support ring (601) fixedly connected to one end of the top of the screen box (1). The support ring (601) is parallel to the screen box (1). A hopper (602) is rotatably connected inside the support ring (601) through a bearing. The opening at the bottom of the hopper (602) extends into the screen box (1). A forward and reverse motor (604) is fixedly installed outside the support ring (601). A bevel gear (605) is coaxially fixed at the output end of the forward and reverse motor (604). A bevel gear ring (603) adapted to the bevel gear (605) is coaxially fixed on the outer circumference of the hopper (602).

2. The double-shaft vibrating screen with uniform screening function according to claim 1, characterized in that: The sieve box (1) is equipped with two sieves (5) and a striking assembly (7). The striking assembly (7) includes two mounting rods (701) rotatably connected inside the sieve box (1). The two mounting rods (701) are respectively located at the bottom of the two sieves (5). Two connecting strips (702) are fixedly connected to the outer circumference of the two mounting rods (701). A striking hammer (703) is fixedly connected to the ends of the two connecting strips (702) that are far apart from each other.

3. The double shaft vibrating screen with uniform screening function according to claim 2, characterized in that: The output end of the forward and reverse motor (604) is fixedly fitted with a pulley two (706). The two mounting rods (701) are each coaxially fixed with a pulley one (704) at their outer ends. The pulley two (706) and the top pulley one (704) are fitted with the same belt two (707). The two pulleys one (704) are fitted with the same belt one (705).

4. The double shaft vibrating screen with uniform screening function according to claim 1, characterized in that: The support frame (2) has a spring (3) fixedly connected to each of the four corners at the top. The four springs (3) are fixedly connected to the screen box (1). The bottom of the screen box (1) is equipped with two parallel vibrating motors (4), and the two vibrating motors (4) have the same specifications.

5. A biaxial vibrating screen with uniform screening function according to claim 1, characterized in that: An inclined guide plate is fixedly connected to one side of the inner wall of the sieve box (1), and the guide plate is located between two sieves (5).

6. The double shaft vibrating screen with uniform screening function according to claim 3, characterized in that: The transmission ratio between pulley two (706) and pulley one (704) is less than one.

7. A biaxial vibrating screen with uniform screening function according to claim 2, characterized in that: The striking hammer (703) is made of rubber material.

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