Finished product screening machine special for precoated sand regeneration production line

Abstract

The utility model discloses a special finished product screening machine for a precoated sand regeneration production line, which relates to the field of square rocking sieves, and comprises a box body, four sliding lugs are welded on the top of the box body, a feeding pipe is mounted at the top end of the box body, a discharging pipe is mounted at the bottom end of the box body, and screens are rotatably mounted at two ends in the box body. A limiting rotating mechanism is installed at one end of the box body, a rotating mechanism is installed on one side of the outer wall of the discharging pipe, a reversing mechanism connected with the rotating mechanism is installed in the discharging pipe, and the reversing mechanism divides an inner cavity of the discharging pipe into a coarse sand discharging port and a fine sand discharging port. By arranging the limiting rotating mechanism and the reversing mechanism, the screen can be overturned by 180 degrees, coarse sand located at the top of the screen can be rapidly discharged, the coarse sand clamped in the screen holes after rotation can conveniently fall off under the gravity and vibration at the same time, and the purpose that the coarse sand is discharged more thoroughly is achieved.

Description

Technical Field

[0001] This utility model relates to the field of square gyratory screens, specifically a finished product screening machine for a coated sand recycling production line. Background Technology

[0002] Square gyratory screen: After the screener is started, its reciprocating moving mechanism drives the device to move back and forth. The screen box moves back and forth under the action of inertial force, causing the screen surface to shake periodically. This causes the coated sand on the screen surface to move in a directional jumping motion along with the screen box. Coated sand smaller than the screen hole diameter falls through the screen hole into the lower layer and becomes undersize material, while coated sand larger than the screen hole diameter is intercepted.

[0003] In existing technologies, after the fine sand is screened, the intercepted coarse sand needs to be discharged. However, the existing coarse sand discharge mechanism is relatively complex and has the problem of incomplete discharge, especially the coarse sand stuck in the screen mesh is difficult to discharge. Utility Model Content

[0004] The purpose of this utility model is to provide a special finished product screening machine for a coated sand recycling production line in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a special finished product screening machine for a coated sand recycling production line, comprising a box body with four sliding ears welded to the top, a feed pipe installed at the top of the box body, a discharge pipe installed at the bottom of the box body, screens rotatably installed at both ends inside the box body, a limit rotation mechanism installed at one end of the box body, a rotation mechanism installed on one side of the outer wall of the discharge pipe, and a reversing mechanism connected to the rotation mechanism installed inside the discharge pipe, the reversing mechanism dividing the inner cavity of the discharge pipe into a coarse sand outlet and a fine sand outlet;

[0006] The top of the feed pipe is formed with a funnel-shaped structure that is wider at the top and narrower at the bottom. The feed pipe is connected to the inner cavity of the discharge pipe. The bottom of the inner wall of the box is integrally formed with a guide slope.

[0007] As a further embodiment of this utility model: the limiting rotation mechanism includes an electric push cylinder installed at one end of the outside of the housing, the output end of the electric push cylinder is fixedly installed with a connecting lug, the bottom end of the connecting lug is fixedly installed with a rack, a rotating gear meshes below the rack, and the rotating gear is fixedly connected to one end of the rotating gear through a connecting shaft.

[0008] As a further embodiment of this utility model: a slide rail is installed on one end of the outer side of the box, the two sides of the slide rail are closed structures, a slider is slidably installed on the inner wall of the slide rail, and the slider is fixedly connected to the rack.

[0009] As a further embodiment of this utility model: the rotating mechanism includes a forward and reverse rotating motor mounted on the outer wall of the discharge pipe via a bracket, a connecting gear is fixedly mounted on the output end of the forward and reverse rotating motor, and a driven gear is provided above the connecting gear. The connecting gear in the rotating state is used to drive the driven gear to rotate.

[0010] As a further embodiment of this utility model: the reversing mechanism includes a partition plate fixedly installed below the inner wall of the discharge pipe, a reversing plate rotatably installed on the inner wall of the discharge pipe, the top of the partition plate fitting against the arcuate portion at the bottom of the reversing plate, protrusions welded to both ends of the inner wall of the discharge pipe, the bottom end of the protrusions being arc-shaped, the center of the arc coinciding with the center of the reversing plate, a limiting block welded to the outer wall of the arc, the limiting block being used to limit the maximum rotation angle of the reversing plate, and the reversing plate and the driven gear being coaxially connected via a synchronous shaft.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By setting a limit rotation mechanism and a reversing mechanism, the screen can be rotated 180 degrees, which can quickly discharge the coarse sand located at the top of the screen. After rotation, the coarse sand stuck in the screen holes can be easily dislodged under gravity and vibration, so as to achieve more thorough discharge of coarse sand. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 For the present utility model Figure 1 Enlarged view of a portion of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective;

[0016] Figure 4 This is a schematic diagram of the limiting rotation mechanism of this utility model;

[0017] Figure 5 This is a schematic diagram of the installation of the screen of this utility model;

[0018] Figure 6 For the present utility model Figure 5 Enlarged view of section B in the middle.

[0019] In the diagram: 1. Housing; 2. Sliding lug; 3. Feed pipe; 4. Discharge pipe; 5. Driven gear; 6. Forward and reverse motor; 7. Connecting gear; 8. Electric push cylinder; 9. Connecting lug; 10. Rack; 11. Rotating gear; 12. Slider; 13. Slide rail; 14. Screen; 15. Guide slope; 16. Protrusion; 17. Limiting block; 18. Partition plate; 19. Reversing plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-6 In this embodiment of the present invention, a special finished product screening machine for a coated sand recycling production line includes a box 1 with four sliding ears 2 welded to the top. A feed pipe 3 is installed at the top of the box 1, and a discharge pipe 4 is installed at the bottom of the box 1. Screens 14 are rotatably installed at both ends inside the box 1. A limit rotation mechanism is installed at one end of the box 1. A rotation mechanism is installed on one side of the outer wall of the discharge pipe 4. A reversing mechanism connected to the rotation mechanism is installed inside the discharge pipe 4. The reversing mechanism divides the inner cavity of the discharge pipe 4 into a coarse sand outlet and a fine sand outlet. The top of the feed pipe 3 is formed with a funnel-shaped structure that is wider at the top and narrower at the bottom. The inner cavity of the feed pipe 3 is connected to the inner cavity of the discharge pipe 4. A guide slope 15 is integrally formed at the bottom of the inner wall of the box 1.

[0022] In this embodiment: First, recycled sand is poured into the interior of the box 1 through the feed pipe 3. After pouring, the reciprocating moving mechanism is activated, which drives the box 1 to move back and forth along its length. The box 1 drives the sliding ear 2 to slide back and forth on the outer wall of the guide rod. At this time, the recycled sand inside the box 1 vibrates. Qualified recycled sand falls through the mesh of the screen 14 and is discharged outward through the fine sand outlet. Unqualified coarse sand is intercepted by the screen 14. After the fine sand is screened, the rotating mechanism is activated, which drives the reversing mechanism to switch channels. At this time, the fine sand outlet is closed, while the coarse sand outlet is opened. Then, the limiting rotating mechanism is activated, which drives the screen 14 to rotate 180 degrees. At this time, the coarse sand at the top of the screen rotates and falls, and is discharged from the coarse sand outlet. After the screen 14 rotates 180 degrees, recycled sand is added into the interior of the box 1 through the feed pipe 3, and the rotating mechanism is activated to reset the reversing mechanism.

[0023] Please refer to this carefully. Figure 3 and Figure 4The limiting rotation mechanism includes an electric push cylinder 8 installed at one end of the outer side of the housing 1. A connecting ear 9 is fixedly installed at the output end of the electric push cylinder 8. A rack 10 is fixedly installed at the bottom end of the connecting ear 9. A rotating gear 11 meshes with the bottom of the rack 10. The rotating gear 11 is fixedly connected to one end of the rotating gear 11 through a connecting shaft. A slide rail 13 is installed at one end of the outer side of the housing 1. The two sides of the slide rail 13 are closed structures. A slider 12 is slidably installed on the inner wall of the slide rail 13. The slider 12 is fixedly connected to the rack 10.

[0024] In this embodiment: when the drive screen 14 rotates 180 degrees, the electric push cylinder 8 is activated. The electric push cylinder 8 pushes the rack 10 to move along the width direction of the housing 1 through the connecting lug 9. The rack 10 drives the slider 12 to slide along the inner wall of the slide rail 13. The slide rail 13 limits the maximum displacement distance of the rack 10. The moving rack 10 drives the rotating gear 11 to rotate 180 degrees. At this time, the rotating gear 11 drives the screen 14 to rotate 180 degrees, realizing the discharge of coarse sand.

[0025] Please refer to this carefully. Figure 5 and Figure 6 The rotating mechanism includes a forward and reverse motor 6 mounted on the outer wall of the discharge pipe 4 via a bracket. A connecting gear 7 is fixedly mounted on the output end of the forward and reverse motor 6. A driven gear 5 is provided above the connecting gear 7. The rotating connecting gear 7 is used to drive the driven gear 5 to rotate.

[0026] In this embodiment: by starting the forward and reverse motor 6, the forward and reverse motor 6 drives the connected gear 7 to rotate, the connected gear 7 drives the driven gear 5 to rotate, and the driven gear 5 drives the connected reversing plate 19 to rotate, thereby achieving the purpose of switching channels and realizing the separate discharge of coarse sand and fine sand. Since the connected gear 7 is not a full-tooth structure, it can only drive the driven gear 5 to rotate a preset angle.

[0027] Please refer to the figure carefully. The reversing mechanism includes a partition 18 fixedly installed on the lower part of the inner wall of the discharge pipe 4. A reversing plate 19 is rotatably installed on the inner wall of the discharge pipe 4. The top of the partition 18 fits against the arc part at the bottom of the reversing plate 19. Protrusions 16 are welded to both ends of the inner wall of the discharge pipe 4. The bottom end of the protrusion 16 is arc-shaped, and the center of the arc coincides with the center of the reversing plate 19. A limit block 17 is welded to the outer wall of the arc. The limit block 17 is used to limit the maximum rotation angle of the reversing plate 19. The reversing plate 19 and the driven gear 5 are coaxially connected through a synchronous shaft.

[0028] In this embodiment: when the driven gear 5 rotates, the rotating driven gear 5 drives the reversing plate 19 to rotate synchronously. The reversing plate 19 separates from one limiting block 17 and rotates towards another limiting block 17. When the connecting gear 7 and the driven gear 5 are misaligned from the meshing state, the reversing plate 19 contacts another limiting block 17 to achieve the purpose of switching channels.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A special finished product screening machine for a coated sand recycling production line, comprising a box (1) with four sliding ears (2) welded to the top, a feed pipe (3) installed at the top of the box (1), and a discharge pipe (4) installed at the bottom of the box (1), characterized in that, The box (1) has a screen (14) rotatably installed at both ends inside. A limit rotation mechanism is installed at one end of the box (1). A rotation mechanism is installed on one side of the outer wall of the discharge pipe (4). A reversing mechanism connected to the rotation mechanism is installed inside the discharge pipe (4). The reversing mechanism divides the inner cavity of the discharge pipe (4) into a coarse sand outlet and a fine sand outlet. The top of the feed pipe (3) is formed with a funnel-shaped structure that is wider at the top and narrower at the bottom. The feed pipe (3) is connected to the inner cavity of the discharge pipe (4). The bottom of the inner wall of the box (1) is integrally formed with a guide slope (15).

2. The finished product screening machine for a coated sand recycling production line according to claim 1, characterized in that, The limiting rotation mechanism includes an electric push cylinder (8) installed at one end of the outside of the housing (1). A connecting ear (9) is fixedly installed at the output end of the electric push cylinder (8). A rack (10) is fixedly installed at the bottom end of the connecting ear (9). A rotating gear (11) meshes with the rack (10) below. The rotating gear (11) is fixedly connected to one end of the rotating gear (11) through a connecting shaft.

3. A finished product screening machine for a coated sand recycling production line according to claim 2, characterized in that, A slide rail (13) is installed on one end of the outer side of the housing (1). The two sides of the slide rail (13) are closed structures. A slider (12) is slidably installed on the inner wall of the slide rail (13). The slider (12) is fixedly connected to the rack (10).

4. The finished product screening machine for a coated sand recycling production line according to claim 3, characterized in that, The rotating mechanism includes a forward and reverse motor (6) mounted on the outer wall of the discharge pipe (4) via a bracket. A connecting gear (7) is fixedly mounted on the output end of the forward and reverse motor (6). A driven gear (5) is provided above the connecting gear (7). The connecting gear (7) in the rotating state is used to drive the driven gear (5) to rotate.

5. A finished product screening machine for a coated sand recycling production line according to claim 4, characterized in that, The reversing mechanism includes a partition (18) fixedly installed below the inner wall of the discharge pipe (4). A reversing plate (19) is rotatably installed on the inner wall of the discharge pipe (4). The top of the partition (18) is in contact with the arc portion at the bottom of the reversing plate (19). Protrusions (16) are welded to both ends of the inner wall of the discharge pipe (4). The bottom end of the protrusion (16) is arc-shaped, and the center of the arc coincides with the center of the reversing plate (19). A limit block (17) is welded to the outer wall of the arc. The limit block (17) is used to limit the maximum rotation angle of the reversing plate (19). The reversing plate (19) and the driven gear (5) are coaxially connected through a synchronous shaft.

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