Classified screening device for PVC (polyvinyl chloride) granules

Abstract

The utility model relates to the technical field of screening devices, and discloses a PVC aggregate grading screening device which comprises a low-speed rotating motor, a rotating disc is fixed to the side face of the low-speed rotating motor, a clamping block is fixed to the side face of the rotating disc, a rocker shaft is movably connected to the side wall of the outer ring of the clamping block in a sleeved mode, and a threaded bolt is fixedly connected to the side face of the rocker shaft. An annular groove fixing block is connected to the side face of the rocker shaft in a threaded mode, a threaded hole is formed in the side face of the annular groove fixing block, a telescopic moving rod is movably connected to the side face of the inner wall of the rocker shaft, and a nut is connected to the side wall of the outer ring of a threaded bolt in a threaded mode. Therefore, two different movement tracks can be generated when the rocker shaft and the telescopic moving rod move, high-frequency and small-amplitude movement can be stably carried out, damage is not prone to occurring, accessory assemblies are few, problems and damage are not prone to occurring, and later simple maintenance is also facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, and more specifically to a PVC granular material grading and screening device. Background Art

[0002] PVC (polyvinyl chloride) granules are one of the important raw materials in the plastic processing industry and are widely used in construction, home appliances, packaging, medical and other fields. In the production process of PVC granules, the screening of raw materials is a key link, which directly affects the quality and efficiency of subsequent processing. With the development of refined industrial production, the particle size distribution and impurity content of PVC granules are required to be higher and higher. Therefore, the screening device needs to have high-precision screening capabilities. While pursuing high quality, production efficiency is also the focus of enterprises. The screening device needs to be able to complete the screening operation quickly and continuously to improve the efficiency of the overall production line. The screening machine equipment usually includes a screen, a vibration mechanism or a rotating mechanism, a feeding device, a discharging device, a bracket and a base.

[0003] Insufficient existing technology: Some screening equipment is prone to problems such as uneven particle size distribution or impurities mixing during the screening process, affecting the screening quality. Some screening equipment has complex structural design, many wearing parts, high maintenance costs and difficulty. The screening device needs to maintain stable performance during long-term operation to reduce failure rate and downtime, which makes it difficult to ensure the continuity and stability of production. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a PVC granular material grading and screening device to solve the problems existing in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PVC pellet grading and screening device, comprising a low-speed rotating motor, a turntable is fixed on the side of the low-speed rotating motor, a clamping block is fixed on the side of the turntable, a rocker shaft is movably sleeved on the outer ring side wall of the clamping block, a threaded bolt is fixedly connected to the side of the rocker shaft, an annular groove fixing block is threadedly connected to the side of the rocker shaft, a threaded hole is opened on the side of the annular groove fixing block, a telescopic moving rod is movably connected to the inner wall side of the rocker shaft, and a nut is threadedly connected to the outer ring side wall of the threaded bolt.

[0006] Furthermore, a heightening block is threadedly connected to the bottom of the low-speed rotating motor, a bottom plate is fixedly connected to the bottom of the heightening block, and a protective shell is fixedly connected to the top of the bottom plate.

[0007] Furthermore, a stabilizing slider is fixedly connected to the top of the base plate, a movable slide rod is fixedly connected to the top of the base plate, and a load-bearing slider is movably sleeved on the outer ring side wall of the movable slide rod.

[0008] Furthermore, a screening box is fixedly connected to the top of the load-bearing sliding block, and a charging funnel is fixedly connected to the top of the screening box.

[0009] Furthermore, a first screening plate is fixedly connected to the inner cavity side wall of the screening box, and a second screening plate is fixedly connected to the inner cavity side wall of the screening box.

[0010] Furthermore, a first oblique plate is fixedly connected to the inner cavity side wall of the screening box, a second oblique plate is fixedly connected to the inner cavity side wall of the screening box, a second outlet is fixedly connected to the side of the screening box, a first outlet is fixedly connected to the side of the screening box, and a third outlet is opened at the bottom end of the screening box.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model is provided with a low-speed rotating motor, a rocker shaft and a telescopic movable rod, so that the rocker shaft and the telescopic movable rod can have two different motion trajectories when they move, which is conducive to stable high-frequency and small-amplitude movement, is not easy to be damaged, has fewer accessories and components, is not prone to problems and damage, and is also convenient for simple maintenance at a later stage.

[0013] 2. The utility model is provided with two screening plates, two bevel plates and three discharge ports, which is conducive to the separate screening of granules of various different calibers. The fixed bevel plates are conducive to the granules rolling directly from the bevel plates to the outlets, without stopping the equipment for individual cleaning and pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the interior of the utility model;

[0016] Figure 3 It is an exploded schematic diagram of the overall structure inside the utility model;

[0017] Figure 4 It is an exploded schematic diagram of the overall structure inside the utility model;

[0018] Figure 5 This is a schematic diagram of the screening plate structure of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the bottom of the screening box of the utility model.

[0020] The accompanying drawings are marked as follows: 1. bottom plate; 101. heightening block; 102. stabilizing slider; 103. protective shell; 2. low-speed rotating motor; 201. turntable; 202. clamping block; 203. rocker shaft; 204. threaded bolt; 205. annular groove fixing block; 206. threaded hole; 207. nut; 208. telescopic moving rod; 3. screening box; 301. load-bearing slider; 302. moving slide rod; 303. charging funnel; 304. first screening plate; 305. second screening plate; 306. second oblique plate; 307. first oblique plate; 308. second outlet; 309. first outlet; 310. third outlet. DETAILED DESCRIPTION

[0021] The technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The PVC pellet grading and screening device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0022] Reference Figures 1 to 6 The utility model provides a PVC granular material grading and screening device, comprising a low-speed rotating motor 2, a rotating disk 201 is fixed on the side of the low-speed rotating motor 2, a clamping block 202 is fixed on the side of the rotating disk 201, a rocking arm shaft 203 is movably sleeved on the outer ring side wall of the clamping block 202, a thread 204 is fixedly connected to the side of the rocking arm shaft 203, a ring groove fixing block 205 is threadedly connected to the side of the rocking arm shaft 203, a threaded hole 206 is provided on the side of the ring groove fixing block 205, a telescopic moving rod 208 is movably connected to the inner wall side of the rocking arm shaft 203, a nut 207 is threadedly connected to the outer ring side wall of the threaded bolt 204, and when the low-speed rotating motor 2 is rotated, The turntable 201 fixed by the low-speed rotating motor 2 is driven to rotate. A clamping block 202 is fixed on the side of the turntable 201 near the arc edge, and a rocker shaft 203 is sleeved thereon. The rotation of the bottom plate 1 will drive the rocker shaft 203 to swing up and down, and move forward and backward with a small amplitude. While the rocker shaft 203 is swinging, it will drive the telescopic movable rod 208 to move forward and backward with a small amplitude at a high frequency. Since the telescopic movable rod 208 is movably sleeved in the height-increasing block 101, it can only move forward and backward in parallel. The end of the telescopic movable rod 208 connected to the rocker shaft 203 is spherically sleeved, thereby realizing two different motion trajectories when the rocker shaft 203 and the telescopic movable rod 208 move.

[0023] The bottom of the low-speed rotating motor 2 is threadedly connected with a heightening block 101 , the bottom of the heightening block 101 is fixedly connected with a bottom plate 1 , and the top of the bottom plate 1 is fixedly connected with a protective housing 103 .

[0024] Among them, a stabilizing slider 102 is fixedly connected to the top of the bottom plate 1, a moving slider 302 is fixedly connected to the top of the bottom plate 1, and a load-bearing slider 301 is movably sleeved on the outer ring side wall of the moving slider 302. The weight of the screening box will be evenly distributed to the moving slider 302 and the load-bearing slider 301, and the load-bearing slider 301 can slide back and forth on the moving slider.

[0025] The top of the load-bearing sliding block 301 is fixedly connected with a screening box 3, and the top of the screening box 3 is fixedly connected with a loading funnel 303 for loading.

[0026] The inner cavity side wall of the screening box 3 is fixedly connected with a first screening plate 304, and the inner cavity side wall of the screening box 3 is fixedly connected with a second screening plate 305, which are used to screen out pellets of different calibers respectively.

[0027] Among them, the inner cavity side wall of the screening box 3 is fixedly connected with the first bevel plate 307, the inner cavity side wall of the screening box 3 is fixedly connected with the second bevel plate 306, the side of the screening box 3 is fixedly connected with the second outlet 308, the side of the screening box 3 is fixedly connected with the first outlet 309, and the bottom end of the screening box 3 is opened with a third outlet 310.

[0028] The working principle of the utility model is as follows: a low-speed rotating motor 2 is provided, which drives the turntable 201 fixed by the low-speed rotating motor 2 to rotate when it rotates. A clamping block 202 is fixed on the side of the turntable 201 close to the arc edge, and a rocker shaft 203 is sleeved thereon. The rotation of the bottom plate 1 will drive the rocker shaft 203 to swing up and down, and move back and forth in a small amplitude. While the rocker shaft 203 is swinging, it will drive the telescopic movable rod 208 to move back and forth in a high-frequency and small amplitude. Since the telescopic movable rod 208 is movably sleeved in the height-increasing block 101, it can only move back and forth in parallel. Because one end of the telescopic movable rod 208 connected to the rocker shaft 203 is a spherical sleeve, the rocker shaft 203 and the telescopic movable rod 208 can have two different motion trajectories when they move, so that the motor rotation drives the rocker to move back and forth in a high-frequency and small amplitude. The telescopic movable rod 208 is fixed to the screening box 3. When starting work, the screening box 3 will be driven by the telescopic movable rod 208 to move back and forth in a high-frequency and small amplitude. The first screening plate 304 and the second screening plate 305 inside the screening box 3 are fixed at an angle. The screening holes opened in the two screening plates have different diameters. The diameter of the top layer is larger than that of the bottom layer. In addition, the second oblique plate 306 and the first oblique plate 307 are also designed to be inclined and fixed. Therefore, when the equipment is turned on to pour the granular material from the charging funnel 303 into the screening box 3, the screening box 3 is opened with a high frequency and small amplitude movement. The granular material will start to be screened from the first screening plate 304, and the granular material smaller than the first screening plate 304 will be screened. The particles with a diameter larger than that of the selection plate 304 will fall into the second layer, and the particles with a diameter larger than that of the first screening plate 304 will roll to the first outlet 309 due to the shaking because the first screening plate 304 is fixed at an angle, and will be screened and rolled out through the first outlet 309, and this process is repeated in sequence. Therefore, three different sizes of particles can be screened out. Since the screening box 3 is heavy when it is working and is loaded with particles, a load-bearing slider 301 and a movable slide bar 302 are installed to bear the weight of the screening box 3, and can be translated back and forth.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PVC granular material grading and screening device, comprising a low-speed rotating motor (2), characterized in that: A turntable (201) is fixed on the side of the low-speed rotating motor (2), a clamping block (202) is fixed on the side of the turntable (201), a rocking arm shaft (203) is movably sleeved on the outer ring side wall of the clamping block (202), a threaded bolt (204) is fixedly connected to the side of the rocking arm shaft (203), an annular groove fixing block (205) is threadedly connected to the side of the rocking arm shaft (203), a threaded hole (206) is provided on the side of the annular groove fixing block (205), a telescopic moving rod (208) is movably connected to the inner wall side of the rocking arm shaft (203), and a nut (207) is threadedly connected to the outer ring side wall of the threaded bolt (204).

2. A PVC granular material grading and screening device according to claim 1, characterized in that: The bottom of the low-speed rotating motor (2) is threadedly connected to a heightening block (101), the bottom of the heightening block (101) is fixedly connected to a bottom plate (1), and the top of the bottom plate (1) is fixedly connected to a protective housing (103).

3. A PVC granular material grading and screening device according to claim 2, characterized in that: The top of the base plate (1) is fixedly connected to a stabilizing slider (102), the top of the base plate (1) is fixedly connected to a moving slider (302), and the outer ring side wall of the moving slider (302) is movably sleeved with a load-bearing slider (301).

4. A PVC granular material grading and screening device according to claim 3, characterized in that: The top of the load-bearing sliding block (301) is fixedly connected to a screening box (3), and the top of the screening box (3) is fixedly connected to a charging funnel (303).

5. A PVC granular material grading and screening device according to claim 4, characterized in that: A first screening plate (304) is fixedly connected to the inner cavity side wall of the screening box (3), and a second screening plate (305) is fixedly connected to the inner cavity side wall of the screening box (3).

6. A PVC granular material grading and screening device according to claim 4, characterized in that: The inner cavity side wall of the screening box (3) is fixedly connected with a first oblique plate (307), the inner cavity side wall of the screening box (3) is fixedly connected with a second oblique plate (306), the side of the screening box (3) is fixedly connected with a second outlet (308), the side of the screening box (3) is fixedly connected with a first outlet (309), and the bottom end of the screening box (3) is provided with a third outlet (310).

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