Stone screening device for stone crusher

Abstract

The utility model discloses a stone screening device for stone crusher, including stone screening bin still includes the crushing mechanism of setting in the inner wall top of stone screening bin, the rotatory connection in the inside two sides of stone screening bin of a plurality of rotating shafts, set up in the rotating shaft of pull -out screen, set up in the inside two sides of stone screening bin of vibration limiting mechanism and set up in the discharge gate of vibration limiting mechanism top. The utility model discloses the pull -out screen can rotate around the rotating shaft and always with arc inner wall adhesion, and vibration limiting mechanism exerts force to pull -out screen, makes pull -out screen sustained vibration, accelerates the speed of small -sized particle stone to pass through pull -out screen, improves screening efficiency, and reduces the situation of stone to jam screen, through setting the slot on the rotating shaft, makes pull -out screen can pass through the slot and enter stone screening bin and complete assembly, when pull -out screen is damaged or is jammed, can pull out pull -out screen from the slot and clean and replace through handle.

Description

Technical Field

[0001] This utility model relates to the field of stone crushing technology, and in particular to a stone screening device for a stone crusher. Background Technology

[0002] A stone crusher is a mechanical device that uses mechanical force to crush large blocks of natural rock or mined materials, reducing their particle size to meet the requirements for subsequent processing or direct use. It is the first and critical step in industrial processes such as sand and gravel aggregate production lines, mineral processing plants, and cement plants, and its performance directly determines the efficiency, finished product quality, and operating costs of the entire production system.

[0003] Screening is an essential process in modern, efficient stone production lines. It can control product particle size, meet grading requirements, improve production efficiency, optimize the crushing process, reduce equipment wear, and protect downstream crushers. However, during stone screening, screen holes are prone to clogging, and the screens wear out too quickly and are inconvenient to replace.

[0004] A Chinese patent document with publication number CN208591932U discloses an ore crusher with iron ore screening function. This ore crusher includes a stable base, a discharge box, a secondary filter, a primary filter, a crushing wheel, a feeding device, a drive shaft, a motor, a magnetic adsorption device, a feed inlet, a control valve, a hydraulic crusher, a water sprayer, a water tank, and a mounting bracket. A mounting bracket is installed above the stable base, and a crushing wheel is installed below the mounting bracket. The primary and secondary filters are located below the crushing wheel, and a magnetic adsorption device and a control valve are installed above the mounting bracket. This ore crusher simplifies and facilitates processing, improves processing accuracy, and provides more secure installation. It can distinguish products with different processing requirements, has a long service life, and high versatility. However, this ore crusher with iron ore screening function is prone to clogging during the screening process, affecting screening efficiency.

[0005] To address the shortcomings of the existing technology, providing a stone screening device for a stone crusher is a problem worthy of research. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of easy clogging of screen holes, rapid wear of screen mesh, and inconvenient replacement, and to provide a stone screening device for stone crushers that achieves the technical effects of anti-clogging and convenient replacement.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A stone screening device for a stone crusher includes a stone screening bin, a crushing mechanism disposed on the top of the inner wall of the stone screening bin, a plurality of rotating shafts rotatably connected to the two sides inside the stone screening bin, a pull-out screen disposed in the rotating shafts, a vibration limiting mechanism disposed on the two sides inside the stone screening bin, and a discharge port disposed above the vibration limiting mechanism.

[0009] Optionally, the rotating shafts are staggered left and right within the stone screening chamber. The inner wall of the stone screening chamber opposite to the rotating shafts is arc-shaped, and the arc is coaxial with the rotating shafts. The end of the pull-out screen is tangent to the arc-shaped inner wall. By setting an arc surface on the inner wall of the stone screening chamber, the pull-out screen can rotate around the rotating shaft and always fit against the arc-shaped inner wall. The vibration limiting mechanism applies force to the pull-out screen, causing it to vibrate continuously, accelerating the speed at which small stone particles pass through the pull-out screen, improving screening efficiency, and reducing the possibility of stone clogging the screen.

[0010] Optionally, a slot is provided in the middle of the rotating shaft, and the pull-out screen is inserted into the stone screening chamber through the slot. A handle is fixedly connected to one end of the pull-out screen. By setting a slot on the rotating shaft, the pull-out screen can pass through the slot and enter the stone screening chamber to complete the assembly. When the pull-out screen is damaged or blocked, it can be pulled out from the slot through the handle for cleaning and replacement, improving the efficiency of screen cleaning and replacement, and avoiding the situation where screen damage requires replacement, which leads to a decrease in construction efficiency.

[0011] Optionally, the screen diameter of the pull-out screen decreases sequentially from top to bottom. The compressive load of the pull-out screen is greater than the impact force of the falling stone generated by the stone crushing mechanism. By using pull-out screens with different screen diameters at different heights, a grading and screening mechanism is formed. Each layer of pull-out screen can screen out stones of different diameters, thereby realizing the grading and screening of the crushed stone.

[0012] Furthermore, setting the screen to a staggered left-right configuration allows the discharge ports to be staggered, facilitating the processing of the screened stone. Also, the tilting directions of the pull-out screens are opposite, so the stone that is pulled out from the top screen rolls and is screened on the inclined surface generally falls to the higher part of the inclined surface of the lower pull-out screen, thus allowing the stone to roll fully on the inclined surface of the pull-out screen to complete the screening.

[0013] Optionally, the vibration limiting mechanism includes a limiting block fixedly connected to the lower inner side of the discharge port, and several voice coil motors fixedly connected to the limiting block.

[0014] Optionally, when the voice coil motor is in the extended state, the top of the pull screen is aligned with the bottom of the discharge port. The total output load of the voice coil motor is greater than the total weight of the pull screen and the screened stone. By setting a voice coil motor with a reciprocating output end below the pull screen, it can lift the pull screen, causing the pull screen to vibrate continuously and accelerating the screening efficiency of the stone.

[0015] Optionally, a guide plate is fixedly connected to the bottom outer side of the discharge port. The end of the guide plate is provided with a circular groove. Both ends of the circular groove are provided with mounting plates. A conveyor belt is fixedly connected to the guide plate through the mounting plates. The end of the conveyor belt is adapted to the shape of the circular groove. By providing a guide plate with a mounting plate on the outer side of the discharge port, a conveyor belt can be installed at the discharge port to convey the screened stone.

[0016] Optionally, the crushing mechanism includes two crushing rollers rotatably connected to the top of the inner wall of the stone screening bin, two servo motors fixedly connected to the outer wall of the stone screening bin, and a feed inlet opened at the top of the stone screening bin.

[0017] The output ends of the two servo motors are respectively fixedly connected to the rotating shafts of the two crushing rollers. The rotation directions of the crushing rollers are opposite, and the feed inlet is located above the gap between the two crushing rollers. By setting the crushing rollers above the screening equipment, they can rotate relative to each other to crush the added stone.

[0018] Furthermore, the two crushing rollers are positioned on one side near the top rotating shaft, allowing the crushed stone to be rolled and screened from the top of the uppermost pull-out screen, thus improving screening accuracy.

[0019] Optionally, the bottom of the stone screening chamber is sloped, and one side of the bottom of the stone screening chamber is open. By setting an opening at the bottom of the stone screening chamber, it is convenient to discharge the smallest particle size stone that has been screened out.

[0020] Positive and beneficial effects:

[0021] 1. The stone crusher uses a stone screening device. By setting an arc surface on the inner wall of the stone screening chamber, the pull-out screen can rotate around the rotating shaft and always fit against the arc inner wall. The vibration limiting mechanism applies force to the pull-out screen, causing the pull-out screen to vibrate continuously, which accelerates the speed at which small stone particles pass through the pull-out screen, improves screening efficiency, and reduces the situation of stone clogging the screen.

[0022] 2. The stone crusher uses a stone screening device, which uses a voice coil motor with a reciprocating output end installed below the pull-out screen to lift the pull-out screen, causing the screen to vibrate continuously and accelerating the screening efficiency of the stone.

[0023] 3. The stone crusher uses a stone screening device. By setting a slot on the rotating shaft, the pull-out screen can pass through the slot and enter the stone screening bin to complete the assembly. When the pull-out screen is damaged or blocked, it can be pulled out from the slot by the handle for cleaning and replacement, improving the efficiency of screen cleaning and replacement, and avoiding the situation where the construction efficiency is reduced due to screen damage and replacement. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B;

[0028] Figure 5 This utility model Figure 3 Enlarged structural diagram at point C;

[0029] Figure 6 This is a schematic diagram of the screening mechanism of this utility model;

[0030] Figure 7 This is a cross-sectional structural diagram of the screening mechanism of this utility model.

[0031] In the diagram: 1-Stone screening bin, 2-Rotating shaft, 3-Pull-out screen, 4-Discharge port, 5-Groove, 6-Handle, 7-Limit block, 8-Voice coil motor, 9-Guide plate, 10-Mounting plate, 11-Conveyor belt, 12-Crushing roller, 13-Servo motor, 14-Feed port. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] Example 1

[0034] like Figures 1 to 7As shown, a stone screening device for a stone crusher includes a stone screening bin 1, a crushing mechanism disposed on the top of the inner wall of the stone screening bin 1, a plurality of rotating shafts 2 rotatably connected to the two sides inside the stone screening bin 1, a pull-out screen 3 disposed in the rotating shafts 2, a vibration limiting mechanism disposed on the two sides inside the stone screening bin 1, and a discharge port 4 disposed above the vibration limiting mechanism.

[0035] like Figures 3 to 5 As shown, the rotating shaft 2 is staggered in the left and right sides of the stone screening chamber 1. The inner wall of the stone screening chamber 1 opposite to the rotating shaft 2 is arc-shaped and coaxial with the rotating shaft 2. The end of the pull-out screen 3 is tangent to the inner wall of the arc. By setting the arc surface on the inner wall of the stone screening chamber 1, the pull-out screen 3 can rotate around the rotating shaft 2 and always fit against the inner wall of the arc. The vibration limiting mechanism applies force to the pull-out screen 3, causing the pull-out screen 3 to vibrate continuously, which speeds up the passage of small stone particles through the pull-out screen 3, improves screening efficiency, and reduces the situation of stone clogging the screen.

[0036] like Figures 3 to 7 As shown, a slot 5 is provided in the middle of the rotating shaft 2. The pull-out screen 3 is inserted into the stone screening chamber 1 through the slot 5. A handle 6 is fixedly connected to one end of the pull-out screen 3. By setting the slot 5 on the rotating shaft 2, the pull-out screen 3 can pass through the slot 5 and enter the stone screening chamber 1 to complete the assembly. When the pull-out screen 3 is damaged or blocked, it can be pulled out from the slot 5 through the handle 6 for cleaning and replacement, which improves the cleaning and replacement efficiency of the screen and avoids the situation where the screen needs to be replaced due to damage, which leads to a decrease in construction efficiency.

[0037] like Figures 3 to 5 As shown, the screen diameter of the pull-out screen 3 decreases sequentially from top to bottom. The compressive load of the pull-out screen 3 is greater than the impact force of the falling stone generated by the stone crushing mechanism. By using pull-out screens 3 with different screen diameters at different heights, a grading and screening mechanism is formed. Each layer of pull-out screen can screen out stones of different diameters, thereby achieving the grading and screening of the crushed stone.

[0038] Furthermore, setting the screen to a staggered left-right configuration allows the discharge ports 4 to be staggered, facilitating the processing of the screened stone. Also, the tilting direction of the pull screen 3 is reversed, so the stone that is pulled from the top of the screen 3 and rolled over the inclined surface and screened generally falls to the high point of the inclined surface of the lower pull screen 3, thus allowing the stone to roll fully on the inclined surface of the pull screen 3 to complete the screening.

[0039] Example 2

[0040] like Figure 5 As shown, the vibration limiting mechanism includes a limiting block 7 fixedly connected to the lower inner side of the discharge port 4, and several voice coil motors 8 fixedly connected to the limiting block 7.

[0041] like Figure 5 As shown, when the voice coil motor 8 is in the extended state, the top of the pull screen 3 is aligned with the bottom of the discharge port 4. The total output load of the voice coil motor 8 is greater than the total weight of the pull screen 3 and the screened stone. By setting a voice coil motor with a reciprocating output end below the pull screen 3, it can lift the pull screen 3, causing the pull screen to vibrate continuously and accelerating the screening efficiency of the stone.

[0042] Example 3

[0043] like Figures 1 to 5 As shown, guide plates 9 are fixedly connected to the bottom outer side of the discharge port 4. The end of the guide plate 9 is provided with a circular groove. Mounting plates 10 are provided at both ends of the circular groove. The guide plate 9 is fixedly connected to the conveyor belt 11 through the mounting plates 10. The end of the conveyor belt 11 is adapted to the shape of the circular groove. By providing guide plates 9 with mounting plates 10 on the outer side of the discharge port 4, the conveyor belt 11 can be installed at the discharge port 4 to convey the screened stone.

[0044] like Figures 3 to 5 As shown, the crushing mechanism includes two crushing rollers 12 rotatably connected to the top of the inner wall of the stone screening bin 1, two servo motors 13 fixedly connected to the outer wall of the stone screening bin 1, and a feed inlet 14 opened at the top of the stone screening bin 1.

[0045] The output ends of the two servo motors 13 are fixedly connected to the rotating shafts of the two crushing rollers 12 respectively. The rotation directions of the crushing rollers 12 are opposite. The feed inlet 14 is located above the gap between the two crushing rollers 12. By setting the crushing rollers 12 above the screening equipment, they can rotate relative to each other to crush the added stone.

[0046] Furthermore, the two crushing rollers 12 are positioned on one side near the top rotating shaft 2, allowing the crushed stone to be rolled and screened from the top of the top pull screen 3, thereby improving the screening accuracy.

[0047] like Figures 3 to 5 As shown, the bottom of the stone screening bin 1 is inclined, and one side of the bottom of the stone screening bin 1 is open. By setting an opening at the bottom of the stone screening bin 1, it is convenient to discharge the smallest particle size stone that has been screened out.

[0048] The working principle of this utility model is as follows:

[0049] S1. The pull-out screen 3 can pass through the slot 5 into the stone screening bin 1 to complete the assembly. When the pull-out screen 3 is damaged or blocked, it can be pulled out from the slot 5 through the handle 6 for cleaning and replacement, which improves the cleaning and replacement efficiency of the screen and avoids the situation where the screen needs to be replaced due to damage, resulting in a decrease in construction efficiency.

[0050] S2. Using pull-out screens 3 with different screen diameters at different heights forms a grading and screening mechanism. Each layer of pull-out screens can screen out stones of different diameters, thereby achieving grading and screening of crushed stones.

[0051] S3. The pull-out screen vibrates continuously, accelerating the screening efficiency of the stone.

[0052] S4. Install conveyor belt 11 at discharge port 4 to transport the screened stone.

[0053] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A stone screening device for a stone crusher, comprising a stone screening bin (1), characterized in that: It also includes a crushing mechanism set on the top of the inner wall of the stone screening bin (1), several rotating shafts (2) rotatably connected to the two sides inside the stone screening bin (1), a pull-out screen (3) set in the rotating shaft (2), a vibration limiting mechanism set on the two sides inside the stone screening bin (1), and a discharge port (4) set above the vibration limiting mechanism.

2. The stone screening device for a stone crusher according to claim 1, characterized in that: The rotating shaft (2) is distributed alternately in the left and right sides of the stone screening chamber (1). The inner wall of the stone screening chamber (1) opposite to the rotating shaft (2) is arc-shaped and the arc is coaxial with the rotating shaft (2). The end of the pull-out screen (3) is tangent to the inner wall of the arc.

3. The stone screening device for a stone crusher according to claim 1, characterized in that: The rotating shaft (2) has a slot (5) in the middle. The pull-out screen (3) is inserted into the stone screening bin (1) from the slot (5). A handle (6) is fixedly connected to one end of the pull-out screen (3).

4. The stone screening device for a stone crusher according to claim 1, characterized in that: The screen diameter of the pull-out screen (3) decreases sequentially from top to bottom, and the compressive load of the pull-out screen (3) is greater than the impact force of the stone falling generated by the stone crushing mechanism.

5. A stone screening device for a stone crusher according to claim 1, characterized in that: The vibration limiting mechanism includes a limiting block (7) fixedly connected to the lower inner side of the discharge port (4) and several voice coil motors (8) fixedly connected to the limiting block (7).

6. A stone screening device for a stone crusher according to claim 5, characterized in that: When the voice coil motor (8) is in the extended state, the top of the pull screen (3) is aligned with the bottom of the discharge port (4), and the total output load of the voice coil motor (8) is greater than the total weight of the pull screen (3) and the screened stone.

7. A stone screening device for a stone crusher according to claim 1, characterized in that: The bottom outer side of the discharge port (4) is fixedly connected to a guide plate (9). The end of the guide plate (9) is provided with a circular groove. The front and rear ends of the circular groove are provided with mounting plates (10). The guide plate (9) is fixedly connected to a conveyor belt (11) through the mounting plates (10). The end of the conveyor belt (11) is adapted to the shape of the circular groove.

8. A stone screening device for a stone crusher according to claim 1, characterized in that: The crushing mechanism includes two crushing rollers (12) rotatably connected to the top of the inner wall of the stone screening bin (1), two servo motors (13) fixedly connected to the outer wall of the stone screening bin (1), and a feed inlet (14) opened at the top of the stone screening bin (1). The output ends of the two servo motors (13) are fixedly connected to the rotating shafts of the two crushing rollers (12), the rotation directions of the crushing rollers (12) are opposite, and the feed inlet (14) is located above the gap between the two crushing rollers (12).

9. A stone screening device for a stone crusher according to claim 1, characterized in that: The bottom of the stone screening bin (1) is a slope, and one side of the bottom of the stone screening bin (1) is open.

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