Stone screening device for stone crusher

Abstract

The utility model discloses a stone screening device for a stone crusher, and relates to the technical field of stone crushers. The device comprises a rack, a screening box is arranged above the rack; the opposite side walls of the screening box are connected with the rack through springs correspondingly. A plurality of vibration motors are connected to the bottom of the screening box side by side. A pair of rotating shafts is rotationally connected between the opposite side walls of the screening box side by side. Sieve plates are radially fixed on the two rotating shafts; a plurality of sieve holes are formed in one surface of each sieve plate side by side; the two rotating shafts are connected through a rotating driving assembly; the rotary driving assembly is used for turning over the two sieve plates by driving the two rotary shafts to rotate. The sieve plate cleaning device is reasonable in structural design and convenient to use, and the cleaning efficiency of broken stones clamped on the sieve plate is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stone crushers, and particularly relates to a stone screening device for a stone crusher. Background Technique

[0002] A stone crusher is a commonly used mechanical device in construction. When in use, a crushing device first breaks large rocks into crushed stones by means of extrusion, splitting, bending, impact, rolling, etc., and then a screening device screens the crushed stones to make the size of the crushed stones meet the usage requirements.

[0003] In the prior art, when the stone screening device screens crushed stones, small-particle crushed stones are screened out through the sieve holes of the sieve plate, but large-particle crushed stones will get stuck in the sieve holes of the sieve plate. If the crushed stones stuck in the sieve holes are not cleaned in time, it may affect the use effect and working efficiency of the stone screening device. However, the existing method is usually manual cleaning, which not only has low cleaning efficiency, but also the crushed stones may accidentally injure workers. Therefore, it is urgent to study a stone screening device for a stone crusher to solve the above problems. Content of the Utility Model

[0004] The utility model aims to provide a stone screening device for a stone crusher, and the purpose is to solve the technical problems put forward in the above background technique.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a stone screening device for a stone crusher, including a frame; a screening box with an open top structure is arranged above the frame; the opposite side walls of the screening box are respectively connected to the frame through a pair of vertically arranged springs; a plurality of vibration motors are connected in parallel at the bottom of the screening box; a pair of rotating shafts are rotatably connected in parallel between a pair of opposite side walls of the screening box; sieve plates are radially fixed on both rotating shafts; a plurality of sieve holes are arranged in parallel on one surface of both sieve plates; the two rotating shafts are connected through a rotation driving component; the rotation driving component is used to flip the two sieve plates by driving the two rotating shafts to rotate.

[0007] As a preferred technical solution of the utility model, the screening box has a pair of bottom walls distributed in a "丷" shape; a pair of the vibration motors are installed in parallel on the lower surfaces of both bottom walls; the lower edges of both bottom walls are connected through a discharge hopper; a first discharge port is arranged on one side wall of the discharge hopper.

[0008] As a preferred technical solution of the present invention, a pair of support plates are connected side by side between opposite side walls of the screening box; the lower edges of the two support plates are connected by an inclined supporting plate; a accommodating chamber is formed between the supporting plate, the two support plates and an opposite side wall of the screening box; the accommodating chamber is arranged above the discharge hopper; a second discharge outlet is provided on a side wall of the accommodating chamber away from the first discharge outlet; and the two rotating shafts are arranged side by side at the top of the accommodating chamber.

[0009] As an optimal technical solution of the present invention, baffles parallel to the sieve plates are radially fixed on both rotating shafts; both baffles are arranged at the top of the accommodating chamber; when both sieve plates are in a horizontal state, the two baffles are closed and cover the top of the accommodating chamber.

[0010] As a preferred technical solution of the present invention, the upper edge of the other opposite side wall of the screening box is horizontally connected to a limiting flange; when the two sieve plates are in a horizontal state, the edges of the two sieve plates away from the rotating shaft respectively conflict with the upper surfaces of the two limiting flanges.

[0011] As a preferred technical solution of the present invention, an edge of the two limiting flanges and an upper edge of an opposite side wall of the screening box are connected by a convex edge in a rectangular frame structure; the two screen plates are both arranged on the inner side of the convex edge.

[0012] As an optimal technical solution of the present invention, electromagnets are fixedly inserted on the two limiting flanges; iron sheets corresponding to the electromagnets are fixedly attached to the edges of the two sieve plates away from the rotating shaft; when the two sieve plates are in a horizontal state, the lower surface of the iron sheet is attached to the adjacent electromagnets.

[0013] As a preferred technical solution of the present invention, the rotary drive assembly includes a pair of gears respectively fixedly mounted on one end of two rotating shafts and a servo motor horizontally fixed on a side wall of the screening box; the two gears are meshed with each other; and the output shaft of the servo motor is coaxially connected to the other end of a rotating shaft.

[0014] The utility model has the following beneficial effects:

[0015] The utility model drives the two rotating shafts to rotate synchronously in opposite directions through the rotary drive assembly, prompting the two rotating shafts to drive the two screen plates to rotate to a horizontal state, and then the crushed stones crushed by the crushing device of the stone crusher are transported to the two screen plates, and then the vibration motor drives the screening box to vibrate up and down, prompting the crushed stones on the screen plates to be screened through the screen holes, effectively ensuring the screening efficiency of the crushed stones. When the crushed stones stuck in the screen holes need to be cleaned, the conveying of the crushed stones to the screen plates is first stopped, and then the rotary drive assembly is used to drive the two rotating shafts to rotate synchronously in opposite directions, prompting the two screen plates to rotate to a horizontal state. The rotating shaft drives the two screen plates to rotate upward. When the edges of the two screen plates away from the rotating shaft collide with each other, the two screen plates are distributed in a "∧" shape, causing the gravel stuck on the screen plates to break away from the sieve holes and fall into the screening box from between the two rotating shafts. At the same time, in order to improve the cleaning efficiency of the gravel, the two rotating shafts are driven back and forth by the rotating drive assembly, causing the edges of the two screen plates away from the rotating shaft to hit each other, thereby accelerating the separation of the gravel from the sieve holes. This not only effectively improves the cleaning efficiency of the gravel, but also avoids the problem of gravel contaminating workers during manual cleaning.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The utility model is a structural schematic diagram of a stone screening device for a stone crusher.

[0019] Figure 2 for Figure 1 The main view of the structure.

[0020] Figure 3 for Figure 1 side view of the structure.

[0021] Figure 4 This is a structural diagram of the screening box of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the accommodating chamber of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the screen plate of the present utility model.

[0024] Figure 7This is a stone screening state diagram of a stone screening device for a stone crusher according to the present utility model.

[0025] Figure 8 This is a stone cleaning state diagram of a stone screening device for a stone crusher according to the present utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 1-frame, 2-screening box, 3-spring, 4-vibration motor, 5-rotating shaft, 6-sieve plate, 7-rotation drive assembly, 8-baffle, 9-electromagnet, 10-iron sheet, 201-bottom wall, 202-discharge hopper, 203-first discharge port, 204-support plate, 205-carrying plate, 206-accommodating chamber, 207-second discharge port, 208-limiting flange, 209-convex edge, 601-sieve hole, 701-gear, 702-servo motor. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] See also Figure 1-3 and Figure 6 As shown, the utility model is a stone screening device for a stone crusher, comprising a conventional frame 1 in this field; a screening box 2 with an open top is provided above the frame 1; the opposite side walls of the screening box 2 are connected to the frame 1 through a pair of vertically arranged springs 3, that is, the upper and lower ends of the spring 3 are fixed to the frame 1 and the screening box 2 respectively; a plurality of conventional vibration motors 4 in this field are bolted side by side at the bottom of the screening box 2; a pair of rotating shafts 5 are rotatably connected side by side between opposite side walls of the screening box 2, that is, the two ends of each rotating shaft 5 are rotatably connected to opposite side walls of the screening box 2 respectively; sieve plates 6 are radially welded on both rotating shafts 5; a plurality of sieve holes 601 of a square structure are provided side by side on one surface of both sieve plates 6; the two rotating shafts 5 are connected by a rotary drive assembly 7; the rotary drive assembly 7 is used to flip the two sieve plates 6 by driving the two rotating shafts 5 to rotate. When in use, as Figure 7-8As shown, the rotary drive assembly 7 drives the two shafts 5 to rotate synchronously in the opposite direction, prompting the two shafts 5 to drive the two screen plates 6 to rotate to a horizontal state, and then the crushed stones crushed by the crushing device of the stone crusher are transported to the two screen plates 6, and then the vibration motor 4 is used to drive the screening box 2 to vibrate up and down, prompting the crushed stones on the screen plates 5 to be screened through the screen holes 601, effectively ensuring the screening efficiency of the crushed stones. When it is necessary to clean the crushed stones stuck in the screen holes 601, the conveying of the crushed stones to the screen plates 6 is first suspended, and then the rotary drive assembly 7 drives the two shafts 5 to rotate synchronously in the opposite direction, prompting the two shafts 5 drives the two sieve plates 6 to rotate upward. When the edges of the two sieve plates 6 away from the rotating shaft 5 collide with each other, the two sieve plates 6 are distributed in a "∧" shape, causing the crushed stones stuck on the sieve plates 6 to break away from the sieve holes 601 and fall into the screening box 2 from between the two rotating shafts 5. At the same time, in order to improve the cleaning efficiency of the crushed stones, the two rotating shafts 5 are driven back and forth by the rotating drive assembly 7, causing the edges of the two sieve plates 6 away from the rotating shaft 5 to hit each other, thereby accelerating the separation of the crushed stones from the sieve holes 601. This not only effectively improves the cleaning efficiency of the crushed stones, but also avoids the problem of crushed stones contaminating workers during manual cleaning.

[0031] Example 2:

[0032] Based on Example 1 Figure 2 and 4As shown in Fig. -6, the screening box 2 has a pair of bottom walls 201 distributed in a "丷" shape; a pair of vibrating motors 4 are arranged side by side on the lower surfaces of the two bottom walls 201; the lower edges between the two bottom walls 201 are connected by a discharge hopper 202, that is, the relative edges of the upper port of the discharge hopper 202 are respectively connected to the lower edges of the two bottom walls 201 by welding; since the bottom walls 201 are inclined, the crushed stones falling on the bottom walls 201 are discharged into the discharge hopper 202; a first discharge port 203 is provided on one side wall of the discharge hopper 202, and the bottom wall of the discharge hopper 202 is inclined, which can accelerate the discharge of the crushed stones from the discharge hopper 202 to the first discharge port 203; a pair of support plates 204 are connected side by side between a pair of opposite side walls of the screening box 2, that is, the relative side edges of each support plate 204 are respectively welded to a pair of opposite side walls of the screening box 2; the lower edges between the two support plates 204 are connected by an inclined bearing plate 205, that is, the two support plates 204 and the bearing plate 205 are connected by welding; a receiving chamber 206 is formed among the bearing plate 205, the two support plates 204 and a pair of opposite side walls of the screening box 2; the receiving chamber 206 is arranged above the discharge hopper 202, and there is a large gap between the receiving chamber 206 and the discharge hopper 202, which can facilitate the crushed stones on the bottom walls 201 to fall into the discharge hopper 202; a second discharge port 207 is provided on the side wall of the receiving chamber 206 away from the first discharge port 203, and the second discharge port 207 is arranged at the lower edge of the bearing plate 205, which can accelerate the discharge of the crushed stones in the receiving chamber 206 from the second discharge port 207; two rotating shafts 5 are arranged side by side at the top of the receiving chamber 206, and the two rotating shafts 5 are arranged between the two support plates 204; baffles 8 parallel to the sieve plates 6 are radially welded on the two rotating shafts 5; the two baffles 8 are both arranged at the top of the receiving chamber 206; when the two sieve plates 6 are in a horizontal state, the two baffles 8 close and cover the top of the receiving chamber 206. During use, when the two sieve plates 6 are in a horizontal state, the two baffles 8 close and cover the top of the receiving chamber 206, which can prevent crushed stones from entering the receiving chamber 206. The crushed stones enter the space outside the relative sides of the two support plates 204 through the sieve holes 601 and fall onto the bottom walls 201. Since the bottom walls 201 are inclined, the crushed stones falling on the bottom walls 201 are discharged into the discharge hopper 202 and then discharged through the first discharge port 203; when the sieve holes 601 need to be cleaned, the rotation drive assembly 7 drives the two rotating shafts 5 to rotate synchronously in the opposite direction, prompting the two rotating shafts 5 to drive the two sieve plates 6 to rotate upward and the two baffles 8 to separate. The top of the receiving chamber 206 is in an open state, and the crushed stones stuck in the sieve holes 601 are discharged into the receiving chamber 206 and discharged through the second discharge port 207, so as to separately recycle the crushed stones that can pass through the sieve holes 601 and the crushed stones that cannot pass through the sieve holes 601, which can ensure the consistency of the size of the crushed stones. At the same time, the crushed stones that cannot pass through the sieve holes 601 are crushed again by the crushing device of the stone crusher, effectively ensuring the crushing effect of the stone material.

[0033] Example 3:

[0034] Based on Example 2, Figure 5 As shown, the upper edge of the other opposite side wall of the screening box 2 is horizontally welded with a limit flange 208. When both sieve plates 6 are in a horizontal state, the edges of the two sieve plates 6 away from the rotating shaft 5 respectively contact the upper surfaces of the two limit flanges 208. The separated edges of the two limit flanges 208 and the upper edge of an opposite side wall of the screening box 2 are connected by a convex edge 209 in a rectangular frame structure, and the convex edge 209 is welded to the limit flange 208 and the upper edge of the opposite side wall of the screening box 2. Both sieve plates 6 are arranged on the inner side of the convex edge 209. During use, when both sieve plates 6 are in a horizontal state, the edges of the two sieve plates 6 away from the rotating shaft 5 respectively contact the upper surfaces of the two limit flanges 208, thereby effectively limiting the sieve plates 6 and providing effective support for the sieve plates 6, ensuring the effectiveness and stability of the sieve plates 6.

[0035] Among them Figure 2 、 Figure 4 and Figure 6 As shown, conventional electromagnets 9 in the art are fixedly inserted into both limit flanges 208, and the electromagnets 9 are bolted to the limit flanges 208; an iron sheet 10 corresponding to the electromagnet 9 is fixedly attached to the edge of each sieve plate 6 away from the rotating shaft 5, and the iron sheet 10 is connected to the sieve plate 6 by riveting; when both sieve plates 6 are in a horizontal state, the lower surface of the iron sheet 10 is attached to the adjacent electromagnet 9. During use, when both sieve plates 6 are in a horizontal state, the electromagnet 9 is energized, causing the lower surface of the iron sheet 10 to be adsorbed on the adjacent electromagnet 9, thereby locking the position of the sieve plate 6, preventing the sieve plate 6 from shaking up and down under the vibration of the vibration motor 4, and effectively ensuring the use effect of the sieve plate 6.

[0036] Example 4:

[0037] Based on Example 3 Figure 3 and Figure 6As shown, the rotary drive assembly 7 includes a pair of gears 701 keyed to one end of two rotating shafts 5, and a servo motor 702 horizontally bolted to a side wall of the screening box 2. The two gears 701 are disposed on the outside of the screening box 2 and mesh with each other. The transmission ratio between the two gears 701 is 1. The output shaft of the servo motor 702 is coaxially connected to the other end of one rotating shaft 5 via a conventional coupling in the art. During operation, the servo motor 702 drives the rotating shaft 5 to rotate, and the two gears 701 drive the two rotating shafts 5 to rotate synchronously in opposite directions, thereby adjusting the position of the sieve plate 6. At the same time, by controlling the forward and reverse rotation of the output shaft of the servo motor 702, the two sieve plates 6 strike each other, effectively ensuring the efficient removal of gravel stuck in the sieve holes 601.

[0038] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Stone screening device for stone crusher, including a frame (1); characterized in that: Above the frame (1), there is a screening box (2) with an open top structure; the opposite side walls of the screening box (2) are respectively connected to the frame (1) through a pair of vertically arranged springs (3); the bottom of the screening box (2) is connected in parallel with a plurality of vibration motors (4); Between a pair of opposite side walls of the screening box (2), a pair of rotating shafts (5) are rotatably connected in parallel; on both of the rotating shafts (5), sieve plates (6) are radially fixed; on one surface of both of the sieve plates (6), a plurality of sieve holes (601) are arranged in parallel; between the two rotating shafts (5), they are connected through a rotation driving assembly (7); the rotation driving assembly (7) is used to drive the two rotating shafts (5) to rotate to flip the two sieve plates (6).

2. The stone screening device for a stone crusher according to claim 1, characterized in that: The screening box (2) has a pair of bottom walls (201) distributed in a "丷" shape; on the lower surfaces of both of the bottom walls (201), a pair of the vibration motors (4) are installed in parallel; between the lower edges of the two bottom walls (201), they are connected through a discharge hopper (202); on one side wall of the discharge hopper (202), there is a first discharge port (203).

3. The stone screening device for a stone crusher according to claim 2, characterized in that: Between a pair of opposite side walls of the screening box (2), a pair of support plates (204) are connected in parallel; between the lower edges of the two support plates (204), they are connected through an inclined bearing plate (205); between the bearing plate (205), the two support plates (204) and a pair of opposite side walls of the screening box (2), a receiving chamber (206) is formed; the receiving chamber (206) is arranged above the discharge hopper (202); on the side wall of the receiving chamber (206) far from the first discharge port (203), there is a second discharge port (207); the two rotating shafts (5) are arranged in parallel at the top of the receiving chamber (206).

4. The stone screening device for a stone crusher according to claim 3, characterized in that: On both of the rotating shafts (5), baffles (8) parallel to the sieve plates (6) are radially fixed; both of the baffles (8) are arranged at the top of the receiving chamber (206); when both of the sieve plates (6) are in a horizontal state, the two baffles (8) close together and cover the top of the receiving chamber (206).

5. The stone screening device for a stone crusher according to claim 3 or 4, characterized in that: On the upper edges of the other pair of opposite side walls of the screening box (2), limit flanges (208) are horizontally connected; when both of the sieve plates (6) are in a horizontal state, the edges of both of the sieve plates (6) far from the rotating shafts (5) respectively abut against the upper surfaces of the two limit flanges (208).

6. The stone screening device for a stone crusher according to claim 5, characterized in that: Between the separated edges of the two limit flanges (208) and the upper edges of a pair of opposite side walls of the screening box (2), they are connected through a convex edge (209) in a rectangular frame structure; both of the sieve plates (6) are arranged inside the convex edge (209).

7. The stone screening device for a stone crusher according to claim 5, characterized in that: Electromagnets (9) are fixedly inserted through both of the limit flanges (208); on the edges of both of the sieve plates (6) far from the rotating shafts (5), iron sheets (10) corresponding to the electromagnets (9) are fixedly attached; when both of the sieve plates (6) are in a horizontal state, the lower surfaces of the iron sheets (10) are attached to the adjacent electromagnets (9).

8. The stone screening device for a stone crusher according to claim 7, characterized in that: The rotary drive assembly (7) comprises a pair of gears (701) respectively fixedly sleeved on one end of the two rotating shafts (5) and a servo motor (702) horizontally fixed on a side wall of the screening box (2); the two gears (701) are meshed with each other; and the output shaft of the servo motor (702) is coaxially connected to the other end of a rotating shaft (5).

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