Vibration screening equipment for producing polyvinyl chloride products

Abstract

The utility model relates to vibration screening equipment for polyvinyl chloride product production, which comprises an equipment box (1), the equipment box (1) is a hollow box body with a contracted lower part, the upper part of the equipment box is provided with a material distribution box (2), the top end of the material distribution box is opened and is contracted downwards, the bottom end of the material distribution box is provided with a plurality of discharge ports (21), the lower ends of the discharge ports are opened and deviate to different directions, and the discharge ports are communicated with the equipment box (1). Fixing plates (11) are arranged on the left sides of the two ends of the equipment box (1) respectively, driving motors (3) are fixed to the rear ends of the fixing plates (11), output shafts of the driving motors (3) penetrate through the fixing plates (11), the bottoms of the front sections of the driving motors are hinged to connecting rods (301), the rotating ends of the driving motors are connected with eccentric wheels (31), a mounting frame (4) is arranged in the equipment box (1), and a screen (5) is arranged in the mounting frame (4). During use, polyvinyl chloride raw material particles are evenly guided out to the top face of the screen through the discharging port in the lower end of the material distributing box, the blocking situation of the raw material particles at the same position on the screen is reduced, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyvinyl chloride product production equipment, in particular to vibration screening equipment used for the production of polyvinyl chloride products. Background Art

[0002] Polyvinyl chloride, referred to as PVC, is a polymer formed by the free radical polymerization mechanism of vinyl chloride monomers in the presence of initiators such as peroxides and azo compounds or under the action of light or heat. It appears as milky white powder or granules. Polyvinyl chloride products are made from powdered or granular polyvinyl chloride as raw materials. Before using polyvinyl chloride raw material particles to process them into products, vibration screening equipment is needed to screen and remove impurities from the polyvinyl chloride raw material particles.

[0003] Existing vibrating screens, such as the vibrating screen with easy screen replacement disclosed in Patent No. 202222580987.1, are provided with an arc-shaped buffer plate at the feed port. Another example is the vibrating screen device disclosed in Patent No. 202223363803.2, in which the feed port forms a downwardly contracting feed hopper. These feed ports can buffer the material and prevent the granular material from being fed in too much, thereby preventing the vibrating screen from being blocked.

[0004] However, the above-mentioned feed port shape will cause the polyvinyl chloride raw material particles to gather in the middle of the screen after feeding, and cannot be dispersed in time, which is easy to cause accumulation, and cannot completely avoid clogging, and will also lead to reduced screening efficiency. Utility Model Content

[0005] The utility model aims to solve the problem that the existing vibrating screen equipment causes polyvinyl chloride raw material particles to gather in the middle of the screen after feeding, cannot be dispersed in time, easily accumulates, causes blockage and has low screening efficiency.

[0006] In order to solve the above problems, the utility model provides a vibration screening device for the production of polyvinyl chloride products, including an equipment box 1, a material distribution box 2, a driving motor 3, a mounting frame 4, and a screen 5.

[0007] The equipment box 1 is a hollow box body with a contracted lower portion, with support legs 12 symmetrically arranged on both sides of the bottom, and a discharge port 13 opening downwards is arranged in the middle of the bottom of the equipment box 1 .

[0008] The material distribution box 2 is arranged on the upper part of the equipment box 1, and the equipment box 1 and the material distribution box 2 are connected by a bracket 22. The top of the material distribution box is open and shrinks downward, and the bottom is provided with a plurality of discharge ports 21, which face different directions respectively.

[0009] The driving motor 3 is fixed to the left side of the two ends of the equipment box 1 through the fixing plates 11 , and the rotating end of the driving motor is connected to the left end of the mounting frame 4 through the eccentric wheel 31 and the connecting rod 301 .

[0010] The mounting frame 4 is arranged inside the equipment box 1 , and the right end thereof is hinged to the inner wall of the equipment box 1 .

[0011] The screen 5 is detachably mounted on the mounting frame 4 by means of bolts, covering the cross section of the equipment box 1 .

[0012] The device utilizes the material distribution box 2 to evenly discharge the introduced polyvinyl chloride raw material particles to the top surface of the screen 5 through the material discharge port 21, which can reduce the clogging of the raw material particles at the same position on the screen 5 and improve the screening efficiency.

[0013] Preferably, the bracket 22 is symmetrically arranged about the vertical center line of the distribution box 2, and is fixedly connected to both sides of the top of the equipment box 1, so as to improve the stability of the equipment when in use and the convenience of moving the equipment.

[0014] Preferably, fixing frames 51 are fixedly provided at both ends of the top of the screen 5, and a disassembly rod 52 is provided at the top of the fixing frame 51. The bottom of the disassembly rod 52 passes through the fixing frame 51 and the screw hole 41 on the side of the mounting frame 4 and is fixed by a nut.

[0015] The screen 5 can be inside the mounting frame 4 and can be disassembled by screwing the disassembly rod 52 out from the corresponding threaded hole 41. By replacing the screens with different mesh sizes, the screening of polyvinyl chloride raw material particles with different particle sizes can be achieved.

[0016] Preferably, a front cover 6 is provided at the front end of the equipment box 1, and locking rods 62 are provided on both sides of the top of the front cover 6 and the outer side of the locking rods 62 is provided with external threads, and the equipment box 1 is provided with mounting holes 15 at positions corresponding to the locking rods 62. The front cover 6 can control the polyvinyl chloride raw material particles in the equipment box 1 to prevent the raw material particles from being lost.

[0017] Preferably, fixing blocks 14 are symmetrically arranged on both sides of the front end of the bottom of the equipment box 1 , and a pin 104 is arranged inwardly of the fixing block 14 . Connecting feet 61 are fixedly arranged on both sides of the bottom of the front cover 6 , and the pin 104 passes through the connecting feet 61 .

[0018] After the locking rods 62 at both ends of the front cover 6 are unscrewed from the corresponding mounting holes 15 at the top of the equipment box, the front cover 6 is flipped forward by the hinge connection between the connecting feet 61 and the fixing block 14, thereby revealing the interior of the equipment box 1, making it convenient for the operator to replace the screen and perform maintenance and cleaning operations on the interior of the vibration screening equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the vibration screening equipment used in the production of polyvinyl chloride products;

[0020] Figure 2 It is a schematic side view of a vibrating screening device used in the production of polyvinyl chloride products;

[0021] Figure 3 It is a schematic diagram of the mounting frame and the screen;

[0022] Figure 4 It is a schematic diagram of the material distribution box;

[0023] Figure 5 This is the overall diagram of the equipment box and front cover

[0024] In the figure, 1. equipment box, 11. fixing plate, 12. supporting leg, 13. discharge port, 14. fixing block, 104. pin, 15. mounting hole, 2. material distribution box, 21. discharge port, 22. bracket, 3. driving motor, 31. eccentric wheel, 301. connecting rod, 4. mounting frame, 41. threaded hole, 5. screen, 51. fixing frame, 52. disassembly rod, 502. gasket, 6. front cover, 61. connecting foot, 62. locking rod. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1 and Figure 4 As shown, the vibration screening equipment used for the production of polyvinyl chloride products includes an equipment box 1, a material distribution box 2, a driving motor 3, a mounting frame 4, and a screen 5.

[0027] The equipment box 1 is a hollow box with a contracted lower portion, and a material distribution box 2 is arranged on the upper portion. The equipment box 1 and the material distribution box 2 are connected by a bracket 22. The top end of the material distribution box 2 is open and contracted downward. Three discharge ports 21 are arranged at the bottom end of the material distribution box 2. The discharge port in the middle opens vertically downward, and the discharge ports on both sides are respectively biased toward the two ends of the material distribution box 2 and open obliquely downward.

[0028] like Figure 1 and Figure 2 As shown, fixed plates 11 are respectively provided on the left sides of both ends of the equipment box 1, two groups of drive motors 3 are fixed on the rear end of the fixed plate 11, the output shaft of the drive motor 3 passes through the fixed plate 11, the bottom of the front section of the drive motor 3 is hinged to the connecting rod 301, the rotating end of the drive motor 3 is connected to the eccentric wheel 31, a mounting frame 4 is provided inside the equipment box 1, a screen 5 is provided inside the mounting frame 4 and threaded holes 41 are respectively provided at both ends of both sides of the top, supporting legs 12 are symmetrically provided on both sides of the bottom end of the equipment box 1, and a downwardly opening discharge port 13 is provided in the middle of the bottom end of the equipment box 1.

[0029] When in use, two sets of driving motors 3 drive the eccentric wheel 31 to rotate, and the connecting rod 301 is used to drive the mounting frame 4 to vibrate up and down inside the equipment box 1. The material distribution box 2 evenly discharges the imported polyvinyl chloride raw material particles to the top surface of the screen 5 through the discharge port 21, thereby reducing the blockage of the raw material particles at the same position on the screen 5 and improving the screening efficiency.

[0030] like Figure 1 As shown, the bracket 22 is in a right angle shape and is symmetrically arranged about the vertical center line of the material distribution box 2. The bottom end is fixedly connected to both sides of the top of the equipment box 1 to improve the stability of the equipment when in use and the convenience of moving the equipment.

[0031] like Figure 3 As shown, the screen 5 is installed inside the mounting frame 4, and the two ends of the top thereof are fixedly provided with a fixing frame 51, and a disassembly rod 52 is provided at the top of the fixing frame 51. The bottom of the disassembly rod 52 passes through the fixing frame 51, and the outside of the disassembly rod 52 is provided with an external thread, which corresponds to the threaded holes 41 provided on both sides of the mounting frame 4, and a circular gasket 502 is provided at the top of the disassembly rod 52. When the equipment is used, the screen 5 can be disassembled inside the mounting frame 4 by screwing the disassembly rod 52 out of the corresponding threaded hole 41, and by replacing the screens with different mesh sizes, the screening of polyvinyl chloride raw material particles of different particle sizes can be achieved.

[0032] like Figure 5 As shown, a front cover 6 is provided at the front end of the equipment box 1, and locking rods 62 are provided on both sides of the top of the front cover 6, and external threads are provided on the outside of the locking rods 62, and a mounting hole 15 is provided at the position of the equipment box 1 corresponding to the locking rods 62. When the equipment is in use, the front cover 6 can control the polyvinyl chloride raw material particles in the equipment box 1 to prevent the raw material particles from being lost.

[0033] The fixing blocks 14 are symmetrically arranged on both sides of the front end of the bottom of the equipment box 1, and the pins 104 are arranged inwardly of the fixing blocks 14. The connecting feet 61 are fixedly arranged on both sides of the bottom of the front cover 6, and the pins 104 penetrate the connecting feet 61. When the equipment is in use, after the locking rods 62 at both ends of the front cover 6 are screwed out from the corresponding mounting holes 15 at the top of the equipment box, the front cover 6 is flipped forward through the hinge connection between the connecting feet 61 and the fixing blocks 14, so that the internal structure of the equipment box 1 can be displayed, which is convenient for the operator to replace the screen and perform maintenance and cleaning operations on the inside of the vibration screening equipment.

[0034] In summary, the utility model reduces the clogging of polyvinyl chloride raw material particles at the same position on the screen 5 when the vibration screening equipment is used by arranging the material distribution box 2 and the discharge port 21 structure above the equipment box 1, thereby improving the screening efficiency.

Claims

1. Vibrating screening equipment for producing polyvinyl chloride products, characterized in that: It comprises an equipment box (1), a material distribution box (2), a driving motor (3), a mounting frame (4), and a screen (5). The equipment box (1) is a hollow box body with a contracted lower portion, and support legs (12) are symmetrically arranged on both sides of the bottom end. A discharge port (13) opening downward is arranged in the middle of the bottom end of the equipment box (1). The material distribution box (2) is arranged on the upper part of the equipment box (1), and the equipment box (1) is connected to the material distribution box (2) via a bracket (22). The top end of the material distribution box is open and shrinks downward, and the bottom end is provided with a plurality of discharge ports (21) facing different directions. The driving motor (3) is fixed to the left sides of both ends of the equipment box (1) through a fixing plate (11). The rotating end of the driving motor is connected to the left end of the mounting frame (4) through an eccentric wheel (31) and a connecting rod (301). The mounting frame (4) is arranged inside the equipment box (1), and the right end is hinged to the inner wall of the equipment box (1). The screen (5) is detachably mounted on the mounting frame (4) by means of bolts, covering the cross section of the equipment box (1).

2. The vibrating screening equipment for producing polyvinyl chloride products according to claim 1, characterized in that: The bracket (22) is symmetrically arranged with respect to the vertical center line of the material distribution box (2), and is fixedly connected to both sides of the top of the equipment box (1).

3. The vibrating screening equipment for producing polyvinyl chloride products according to claim 2, characterized in that: The two ends of the top of the screen (5) are fixed with fixing frames (51). The top of the fixing frame (51) is provided with a disassembly rod (52), and the bottom of the disassembly rod (52) passes through the screw holes (41) on the sides of the fixing frame (51) and the mounting frame (4) and is fixed by a nut.

4. The vibrating screening equipment for producing polyvinyl chloride products according to claim 3, characterized in that: The front end of the equipment box (1) is provided with a front cover (6). Lock rods (62) are provided through both sides of the top of the front cover (6), and external threads are provided on the outside of the lock rods (62). The equipment box (1) is provided with mounting holes (15) at positions corresponding to the lock rods (62).

5. The vibrating screening equipment for producing polyvinyl chloride products according to claim 4, characterized in that: Fixed blocks (14) are symmetrically arranged on both sides of the front end of the bottom of the equipment box (1), and a pin shaft (104) is arranged inwardly of the fixed block (14). Connecting feet (61) are fixedly arranged on both sides of the bottom of the front cover (6), and the pin shaft (104) passes through the connecting feet (61).

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