Screening device for gravel processing

Abstract

The utility model discloses a screening device for gravel processing. The screening device comprises a support, a fixing base, a material frame, a screen, a connecting shaft and an assembly type spring structure. By arranging the assembly type spring structure, when the vibration spring is installed, the two assembly blocks are in butt joint with the assembly grooves in the support and the fixing base respectively, then the screw rod is rotated to enable the sliding block to slide and drive the rack to enable the driven teeth to rotate, and the rotating rod can drive the cam to rotate through rotation of the driven teeth, so that the vibration spring is installed. And the push plate can push the insertion rod to be connected with the support and the fixing base in an inserted mode, then installation and fixation of the assembly block are completed, the assembly block can be disassembled by rotating the screw rod in the reverse direction, the vibration spring is conveniently disassembled and installed, and it is avoided that workers are inconvenient to disassemble the vibration spring.

Description

Technical Field

[0001] The utility model relates to the field of sandstone processing, in particular to a screening device for sandstone processing. Background Art

[0002] Sand and gravel refer to a loose mixture of sand and crushed stone. Sand and gravel play the role of skeleton in concrete and inhibit the shrinkage of cement. Cement and water form cement slurry. Sand and gravel are also a kind of building material. In order to avoid different sizes of sand and gravel particles, sand and gravel need to be screened according to different sizes through screening devices.

[0003] Existing patent: CN210449855U, a sand and gravel screening machine, including a base, a spring support, a screen frame, an eccentric vibrator and a multi-layer screen, the screen is composed of a plurality of screen units, the length of the screen unit is the same as the inner width of the screen frame; a discharge port is provided at one end of the screen frame, and a support bar and a pressure bar are provided on the inner wall of the screen frame, which are inclined downward toward the discharge port, and a guide rail is formed between the support bar and the pressure bar for the two ends of the screen unit to slide; the screen frame is provided with a limiting component at the discharge port to limit the screen unit in the guide rail. Each layer of the screen is divided into a plurality of screen units, each of which is fixed in the screen frame by plugging, and a plurality of screen units are limited in the guide rail by the limiting component, so as to reduce the situation that the screen unit is separated from the guide rail during the vibration of the screen frame; when one of the screen units is damaged, the screen unit is taken out through the guide rail on the side of the discharge port, so as to facilitate the replacement of the damaged screen unit, thereby achieving the effect of cost saving.

[0004] The above patents or existing screening devices have the following problems:

[0005] Most of the existing movable vibration springs of screening devices are connected between the fixing seat and the bracket by bolts. After long-term use of the screening device, the vibration spring will suffer from metal fatigue, so it is necessary to disassemble and replace the vibration spring. However, the spring fixed with bolts is sometimes difficult to disassemble due to rust or thread jamming. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a screening device for sand and stone processing.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screening device for sandstone processing, comprising a bracket, a fixed seat is provided on the bracket, the fixed seat is arranged at the edge of the material frame, a screen is arranged in the middle of the material frame, a connecting shaft is arranged at the edge of the material frame, an assembled spring structure is arranged at the connection between the bracket and the fixed seat, the fixed seat is connected to the other end of the assembled spring structure to realize the connection between the fixed seat and the bracket, the assembled spring structure comprises an assembly block, the bracket and the fixed seat are both provided with an assembly groove, two of the assembly blocks are provided, the two assembly blocks are respectively connected to the assembly grooves of the bracket and the fixed seat, a vibration spring is fixed between the two assembly blocks, a screw is provided in the assembly block, a slider connected to the screw, a rack is provided on the edge of the slider, a driven tooth meshing with the rack is connected, a rotating rod is provided in the middle of the driven tooth, the rotating rod is rotatably connected to the assembly block to realize the fixation of the driven tooth, a cam is provided at the upper end of the rotating rod, a push plate is provided inside the assembly block, and a plug rod and a spring are provided on the surface of the push plate.

[0008] Preferably, the assembly block is in an I-shape, and the assembly groove has the same shape as the assembly block.

[0009] Preferably, the sliding block is rectangular, the outer surface of the sliding block is smooth, and the sliding block is slidably connected to the inner wall of the assembly block.

[0010] Preferably, the driven teeth and the cam are fixed on the rotating rod in a layered manner, and the cam is located at the upper end of the driven teeth.

[0011] Preferably, two inserting rods are provided, and the two are located on the same surface of the push plate.

[0012] Preferably, a sliding opening is provided at the connection between the inside of the assembly block and the insertion rod, and when the cam does not support the push plate, the insertion rod will not slide out of the sliding opening.

[0013] Beneficial effects of the utility model:

[0014] The utility model is provided with an assembled spring structure. When installing the vibration spring, the two assembly blocks are respectively connected with the assembly grooves on the bracket and the fixing seat, and then the screw rod is rotated to make the slider slide and drive the rack to rotate the driven tooth. The rotating rod drives the cam to rotate through the rotation of the driven tooth, thereby pushing the push plate to compress the spring to generate elastic force, and the push plate will also push the insertion rod to be plugged with the bracket and the fixing seat, thereby completing the installation and fixation of the assembly block. The assembly block can be disassembled by rotating the screw rod in the opposite direction, so as to realize convenient disassembly and installation of the vibration spring and avoid inconvenience for the staff during disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a front view structural diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the assembly block of the utility model from top view;

[0018] Figure 4 It is a front view structural schematic diagram of the slider of the utility model.

[0019] Among them: bracket-1, fixing seat-2, material frame-3, screen-4, connecting shaft-5, assembled spring structure-6, assembly block-61, assembly groove-62, screw-63, slider-64, rack-65, driven gear-66, rotating rod-67, cam-68, push plate-69, insert rod-610, spring-611. DETAILED DESCRIPTION

[0020] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0021] See also Figure 1 and Figure 2 The utility model provides a screening device for sand and stone processing, including a bracket 1, on which an assembled spring structure 6 is assembled, a fixed seat 2 connected to the assembled spring structure 6, the fixed seat 2 is welded to the outer surface of a material frame 3, so that the material frame 3 is supported and fixed by the bracket 1, a screen 4 is welded in the material frame 3, and a connecting shaft 5 is arranged on the edge of the material frame 3, and the connecting shaft 5 is connected to a matching driver;

[0022] The assembled spring structure 6 is located between the bracket 1 and the fixing seat 2. One end of the assembled spring structure 6 is installed on the bracket 1, and the other end is connected to the fixing seat 2 to achieve the connection between the fixing seat 2 and the bracket 1.

[0023] Turn on the driver to rotate the connecting shaft 5, which will drive the material frame 3 to vibrate. When sand and gravel need to be screened, pour the sand and gravel into the material frame 3. The vibration of the material frame 3 and the screen 4 will screen the sand and gravel according to the size.

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a screening device for sandstone processing. The assembled spring structure 6 includes an assembly block 61. The assembly block 61 is in an "I" shape and is provided with two. The two assembly blocks 61 are respectively connected with the bracket 1 and the assembly groove 62 of the fixing seat 2. The shape of the assembly groove 62 is the same as that of the assembly block 61. A vibration spring is fixed between the two assembly blocks 61.

[0025] The assembly block 61 is provided with a screw rod 63 rotatably connected thereto, and a slider 64 threadedly connected to the screw rod 63. The slider 64 is rectangular, and the outer surface of the slider 64 is polished to make its surface smooth. The slider 64 is slidably connected to the inner wall of the assembly block 61. The surface of the rectangular slider 64 can rotate with the screw rod 63. The edge of the slider 64 is integrally formed with a rack 65, and a driven tooth 66 meshing with the rack 65 is provided. A rotating rod 67 is provided in the middle of the driven tooth 66. The rotating rod 67 is rotatably connected to the assembly block 61 to fix the driven tooth 66. A cam 68 is provided at the upper end of the rotating rod 67. The cam 68 is provided at the upper end of the rotating rod 67. 8 is arranged on the rotating rod 67 in a layered manner with the driven tooth 66, and the cam 68 is located at the upper end of the driven tooth 66, so that the push plate 69 assembled in the assembly block 61 will not contact the driven tooth 66. The surface of the push plate 69 is provided with an insertion rod 610 and a spring 611. There are two insertion rods 610, and the two insertion rods 610 are on the same surface of the push plate 69. A sliding mouth is provided at the connection between the assembly block 61 and the insertion rod 610. When the cam 68 does not support the push plate 69, the insertion rod 610 will not slide out of the sliding mouth, which has an anti-warping effect. One end of the spring 611 is fixed on the push plate 69, and the other end is fixed on the inner wall of the assembly block 61;

[0026] When installing the vibration spring, the two assembly blocks 61 are connected to the assembly grooves 62 on the bracket 1 and the fixing seat 2 respectively, and then the screw 63 is rotated. Since the screw 63 is threadedly connected to the slider 64, the slider 64 will slide along the inner wall of the assembly block 61 when the screw 63 rotates. In this process, the rack 65 will be driven to rotate the driven tooth 66. The rotating rod 67 will drive the cam 68 to rotate through the rotation of the driven tooth 66. The rotating cam 68 will push the push plate 69 to compress the spring 611 to generate elastic force, and the push plate 69 will also push the insertion rod 610 to be plugged with the bracket 1 and the fixing seat 2, thereby completing the installation and fixation of the assembly block 61. The assembly block 61 can be disassembled by rotating the screw 63 in the opposite direction, so as to realize convenient disassembly and installation of the vibration spring and avoid inconvenience for the staff during disassembly.

[0027] The above description is only a preferred example of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A screening device for sand and stone processing, comprising a support (1), wherein a fixing seat (2) is provided on the support (1), the fixing seat (2) is arranged at the edge of a material frame (3), a screen (4) is arranged in the middle of the material frame (3), and a connecting shaft (5) is arranged at the edge of the material frame (3); Features: The invention also comprises an assembled spring structure (6), wherein the assembled spring structure (6) is arranged at the connection between the bracket (1) and the fixing seat (2), the fixing seat (2) is connected to the other end of the assembled spring structure (6) to realize the connection between the fixing seat (2) and the bracket (1), the assembled spring structure (6) comprises an assembly block (61), both the bracket (1) and the fixing seat (2) are provided with an assembly groove (62), two assembly blocks (61) are provided, the two assembly blocks (61) are respectively connected to the assembly grooves (62) of the bracket (1) and the fixing seat (2), and the two assembly blocks (61) are fixedly connected to each other. A vibration spring is fixed, a screw rod (63) is arranged inside the assembly block (61), a slider (64) connected to the screw rod (63), a rack (65) is arranged on the edge of the slider (64), a driven tooth (66) meshing with the rack (65), a rotating rod (67) is arranged in the middle of the driven tooth (66), the rotating rod (67) is rotatably connected to the assembly block (61) to achieve the fixation of the driven tooth (66), a cam (68) is arranged at the upper end of the rotating rod (67), a push plate (69) is arranged inside the assembly block (61), and an insertion rod (610) and a spring (611) are arranged on the surface of the push plate (69).

2. A screening device for sand and stone processing according to claim 1, characterized in that: The assembly block (61) is in the shape of an I, and the assembly groove (62) has the same shape as the assembly block (61).

3. A screening device for sand and stone processing according to claim 1, characterized in that: The sliding block (64) is rectangular, the outer surface of the sliding block (64) is smooth, and the sliding block (64) is slidably connected to the inner wall of the assembly block (61).

4. A screening device for sand and stone processing according to claim 1, characterized in that: The driven tooth (66) and the cam (68) are fixed on the rotating rod (67) in a layered manner, and the cam (68) is located at the upper end of the driven tooth (66).

5. The screening device for sand and stone processing according to claim 1, characterized in that: Two inserting rods (610) are provided, and the two are located on the same surface of the push plate (69).

6. A screening device for sand and stone processing according to claim 5, characterized in that: A sliding opening is provided at the connection between the inside of the assembly block (61) and the insertion rod (610), and when the cam (68) does not support the push plate (69), the insertion rod (610) will not slide out of the sliding opening.

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