Polypropylene particle impurity screening device

Abstract

The utility model provides a polypropylene particle impurity screening device, which relates to the field of polypropylene particle processing equipment and comprises a screening shell, the top of the screening shell is fixedly connected with a feed hopper, the inner wall of the screening shell is fixedly connected with a secondary screening assembly, and a movable plate drives a fixed column and a screening frame in a fixed frame to reciprocate. According to the polypropylene particle screening device, the fixed frame is arranged on the screening frame, so that a telescopic rod and a compression spring arranged on one side of the fixed frame are driven to move, polypropylene particles and impurities in the screening frame are screened, and the primarily screened polypropylene particles and impurities fall into a secondary screening assembly, so that the polypropylene particles fall into a screening shell; and discharging is conducted through the discharging port formed in the bottom of the screening shell, impurities are discharged through the secondary screening assembly, the problems that the screening precision is limited, and the requirement for high-precision screening is difficult to meet are solved, the probability that screened polypropylene particles still contain many impurities is reduced, and the influence on the product quality is reduced.

Description

Technical Field

[0001] The utility model relates to the field of polypropylene particle processing equipment, in particular to a polypropylene particle impurity screening device. Background Art

[0002] Polypropylene particles are small granular substances made of polypropylene polymer materials. Polypropylene is a non-toxic, odorless, tasteless milky white waxy solid particles, commonly known as "folding glue". It has excellent physical and chemical properties, such as good stress cracking resistance, high bending fatigue life, excellent chemical resistance, etc.

[0003] At present, in the process of polypropylene particle extrusion molding, particles of different sizes may cause unstable extrusion or inconsistent product quality. Therefore, it is necessary to screen the oversized particles through a screening device to ensure the uniformity of the principle. When the existing polypropylene particle impurity screening device is in use, the polypropylene particles and impurities are poured into the plate-shaped screen inside the filter box through the feed hopper, and then the motor is started. The motor drives the cam to rotate, the cam rotates, the gap hits the plate-shaped screen, and passes through the positioning groove. At the same time, the spring is compressed. When the cam is away from the plate-shaped screen, the spring naturally recovers. In this process, the plate-shaped screen keeps moving, so that the polypropylene particles and Impurities fall into the fine material area, and the oversized particles and debris are intercepted on the plate screen by the fence plate, and then pass through the gaps on the fence plate. At this time, the polypropylene particles will pass through the plate screen and fall into the filter box, and the oversized particles and debris will be discharged through the discharge port. However, the existing screening device only performs a single screening through the plate screen. Since the single screening is only performed through a plate screen, the aperture design of the screen needs to consider both screening out impurities and preventing polypropylene particles from being screened out, resulting in limited screening accuracy, which is difficult to meet the needs of high-precision screening, and may cause the polypropylene particles after screening to still contain more impurities, affecting product quality.

[0004] Therefore, it is necessary to provide a new polypropylene particle impurity screening device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a polypropylene particle impurity screening device.

[0006] The polypropylene particle impurity screening device provided by the utility model comprises a screening shell, the top of the screening shell is fixedly connected with a feed hopper, and the inner wall of the screening shell is fixedly connected with a secondary screening assembly, a side wall of one side of the feed hopper is fixedly connected with a support frame, the top of the support frame is rotatably connected with a triangular rotating disk, the bottom of the triangular rotating disk is fixedly connected with a driving member, the driving member is fixedly connected to the top of the screening shell, the top of the support frame is slidably connected with a movable plate through two guide frames, one end of the movable plate is fixedly connected with a fixing rod, a telescopic spring is sleeved on the fixing rod, one end of the telescopic spring is fixedly connected to one end of the movable plate, and one end of the telescopic spring away from the movable plate is fixedly connected to the side wall of one side of the support frame, one end of the fixing rod away from the movable plate is fixedly connected to a fixing frame, the inner wall of the fixing frame is slidably connected with a screening frame, and one end of the fixing frame away from the fixing rod is fixedly connected to a plurality of telescopic rods, a plurality of the telescopic rods are sleeved with compression springs, one end of the compression spring is fixedly connected to the side wall of the fixing frame, and one end of the compression spring away from the fixing frame is fixedly connected to the inner wall of the feed hopper.

[0007] Preferably, the secondary screening assembly includes a polarization motor, a buffer spring and a screen plate, the polarization motor is fixedly connected to one end of the screening shell, a fixed block is fixedly connected to the inner wall of the screening shell, one end of the buffer spring is fixedly connected to one side of the fixed block, the screen plate is fixedly connected to the end of the buffer spring away from the fixed block, the end of the screen plate away from the buffer spring is fixedly connected to two guide plates, and the two guide plates are slidably connected to the inner wall of the through hole opened on one side of the screening shell.

[0008] Preferably, the driving member is a servo motor, the servo motor is fixedly connected to the top of the screening housing, and the output end of the servo motor is fixedly connected to the bottom of the triangular rotating disk.

[0009] Preferably, a discharge port is provided on the bottom wall of the screening shell, and the bottom wall of the screening shell is inclined toward the discharge port.

[0010] Preferably, two pulling handles are fixedly connected to the top of the screening frame.

[0011] Preferably, an inspection opening is provided at the top of the screening shell, and an inspection door is hinged at the inspection opening.

[0012] Preferably, a plurality of evenly arranged leg supports are fixedly connected to the bottom of the screening housing, and a fixing frame is fixedly connected between the plurality of leg supports.

[0013] Compared with the related art, the polypropylene particle impurity screening device provided by the utility model has the following beneficial effects:

[0014] The polypropylene particle impurity screening device provided by the utility model, when implemented specifically, firstly, the polypropylene particles and impurities to be screened are poured into the screening frame, and then the servo motor is started, the servo motor drives the triangular rotating disk to rotate, and the triangular rotating disk drives the movable plate to reciprocate while rotating, so that the fixed column and the screening frame in the fixed frame are driven to reciprocate through the movable plate, thereby driving the telescopic rod and the compression spring arranged on one side of the fixed frame to move, so that the polypropylene particles and impurities inside the screening frame are screened, and the polypropylene particles and impurities that are preliminarily screened will fall onto the secondary screening component, so that the polypropylene particles fall into the screening shell, and are discharged through the discharge port provided at the bottom of the screening shell, and the impurities are discharged through the secondary screening component, and the polypropylene particle impurities are screened through the above mechanism, so as to solve the problem that the screening accuracy is limited and it is difficult to meet the demand for high-precision screening, and reduce the probability that the polypropylene particles after screening still contain more impurities, thereby reducing the impact on product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the polypropylene particle impurity screening device provided by the utility model;

[0016] Figure 2 for Figure 1 The schematic diagram of the structure from a top view shown;

[0017] Figure 3 for Figure 1 The schematic diagram of the cutaway structure shown;

[0018] Figure 4 for Figure 3 The structural schematic diagram of the screening frame and the support frame shown;

[0019] Figure 5 for Figure 4 A schematic diagram of the structure of the support frame shown;

[0020] Figure 6 for Figure 3 The schematic structural diagram of the secondary screening component is shown.

[0021] Numbers in the figure: 1. Screening shell; 2. Feed hopper; 3. Support frame; 4. Triangular rotating disk; 5. Movable plate; 6. Fixed rod; 7. Telescopic spring; 8. Fixed frame; 9. Screening frame; 10. Telescopic rod; 11. Compression spring; 12. Polarization motor; 13. Buffer spring; 14. Screen plate; 15. Fixed block; 16. Guide plate; 17. Servo motor; 18. Discharge port; 19. Pull handle; 20. Inspection door; 21. Leg support; 22. Fixed frame; 23. Guide frame. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 ,in, Figure 1 A schematic diagram of the structure of the polypropylene particle impurity screening device provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the structure from a top view shown; Figure 3 for Figure 1 The schematic diagram of the cutaway structure shown; Figure 4 for Figure 3 The structural schematic diagram of the screening frame and the support frame shown; Figure 5 for Figure 4 A schematic diagram of the structure of the support frame shown; Figure 6 for Figure 3 The schematic structural diagram of the secondary screening component is shown.

[0024] In the specific implementation process, Figures 1 to 6As shown, an inspection port is provided on the top of the screening housing 1, and an inspection door 20 is hinged at the inspection port. A plurality of evenly arranged leg supports 21 are fixedly connected to the bottom of the screening housing 1, and a fixing frame 22 is fixedly connected between the plurality of leg supports 21. A discharge port 18 is provided on the bottom wall of the screening housing 1, and the bottom wall of the screening housing 1 is inclined toward the discharge port 18. A feed hopper 2 is fixedly connected to the top of the screening housing 1, and a secondary screening assembly is fixedly connected to the inner wall of the screening housing 1. A support frame 3 is fixedly connected to the side wall on one side of the feed hopper 2, and a triangular rotating disk 4 is rotatably connected to the top of the support frame 3. The triangular rotating disk 4 is a Lello triangle. The Lello triangle is a special triangle, which is a curved triangle composed of three arcs with the vertex of the regular triangle as the center and the length of its side as the radius. A driving member is fixedly connected to the bottom of the triangular rotating disk 4, and the driving member is fixedly connected to the top of the screening housing 1. The driving member is a servo motor 17. The servo motor The machine 17 is fixedly connected to the top of the screening shell 1, and the output end of the servo motor 17 is fixedly connected to the bottom of the triangular rotating disk 4. The top of the support frame 3 is slidably connected with a movable plate 5 through two guide frames 23. One end of the movable plate 5 is fixedly connected to a fixed rod 6. A telescopic spring 7 is sleeved on the fixed rod 6. One end of the telescopic spring 7 is fixedly connected to one end of the movable plate 5, and the end of the telescopic spring 7 away from the movable plate 5 is fixedly connected to a side wall of one side of the support frame 3. The end of the fixed rod 6 away from the movable plate 5 is fixedly connected to a fixed frame 8. The inner wall of the fixed frame 8 is slidably connected to a screening frame 9. Two pulling handles 19 are fixedly connected to the top of the screening frame 9, and one end of the fixed frame 8 away from the fixed rod 6 is fixedly connected to a plurality of telescopic rods 10. Compression springs 11 are sleeved on the plurality of telescopic rods 10. One end of the compression spring 11 is fixedly connected to the side wall of the fixed frame 8, and the end of the compression spring 11 away from the fixed frame 8 is fixedly connected to the inner wall of the feed hopper 2.

[0025] The secondary screening component includes a polarization motor 12, a buffer spring 13 and a screen plate 14. The polarization motor 12 is fixedly connected to one end of the screening housing 1. A fixed block 15 is fixedly connected to the inner wall of the screening housing 1. One end of the buffer spring 13 is fixedly connected to one side of the fixed block 15. The screen plate 14 is fixedly connected to one end of the buffer spring 13 away from the fixed block 15. One end of the screen plate 14 away from the buffer spring 13 is fixedly connected to two guide plates 16. The two guide plates 16 are slidably connected to the inner wall of the through hole opened on one side of the screening housing 1. First, the polypropylene particles and impurities to be screened are poured into the screening frame 9, and then the servo motor 17 is started. The servo motor 17 drives the triangular rotating disk 4 to rotate. The triangular rotating disk 4 drives the movable plate 5 to reciprocate while rotating, so the movable plate 5 drives the fixed column and the screening frame 9 in the fixed frame 8 to reciprocate, thereby driving the telescopic rod 10 and the compression spring 11 set on one side of the fixed frame 8 to move, so as to screen the polypropylene particles and impurities inside the screening frame 9. The polypropylene particles and impurities that have been preliminarily screened will fall onto the sieve plate 14, and the sieve plate 14 will be driven to vibrate through the polarization motor 12 and the buffer spring 13, so that the polypropylene particles fall into the screening shell 1, and are discharged through the discharge port 18 opened at the bottom of the screening shell 1, and the impurities will be discharged through the guide plate 16 set at one end of the sieve plate 14.

[0026] The working principle provided by the utility model is as follows: when in use, first pour the polypropylene particles and impurities that need to be screened into the screening frame 9, and then start the servo motor 17, the servo motor 17 drives the triangular rotating disk 4 to rotate, and the triangular rotating disk 4 will drive the movable plate 5 to reciprocate while rotating, so the movable plate 5 drives the fixed column and the screening frame 9 in the fixed frame 8 to reciprocate, thereby driving the telescopic rod 10 and the compression spring 11 set on one side of the fixed frame 8 to move, so as to screen the polypropylene particles and impurities inside the screening frame 9, and the preliminarily screened polypropylene particles and impurities will fall onto the screen plate 14, and the polarization motor 12 and the buffer spring 13 drive the screen plate 14 to vibrate, so that the polypropylene particles fall into the screening shell 1, and are discharged through the discharge port 18 opened at the bottom of the screening shell 1, and the impurities are discharged through the guide plate 16 set at one end of the screen plate 14.

[0027] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A polypropylene particle impurity screening device, comprising a screening housing (1), wherein a feed hopper (2) is fixedly connected to the top of the screening housing (1), characterized in that: A secondary screening assembly is fixedly connected to the inner wall of the screening housing (1); a support frame (3) is fixedly connected to a side wall of one side of the feed hopper (2); a triangular rotating disk (4) is rotatably connected to the top of the support frame (3); a driving member is fixedly connected to the bottom of the triangular rotating disk (4); the driving member is fixedly connected to the top of the screening housing (1); a movable plate (5) is slidably connected to the top of the support frame (3) via two guide frames (23); one end of the movable plate (5) is fixedly connected to a fixed rod (6); a telescopic spring (7) is sleeved on the fixed rod (6); one end of the telescopic spring (7) is fixedly connected to the movable plate (5). One end of the telescopic spring (7) is away from the movable plate (5), and the end of the telescopic spring (7) is fixedly connected to the side wall of one side of the support frame (3); the end of the fixed rod (6) away from the movable plate (5) is fixedly connected to the fixed frame (8); the inner wall of the fixed frame (8) is slidably connected to the screening frame (9); and the end of the fixed frame (8) away from the fixed rod (6) is fixedly connected to a plurality of telescopic rods (10); a compression spring (11) is sleeved on the plurality of telescopic rods (10); one end of the compression spring (11) is fixedly connected to the side wall of the fixed frame (8), and the end of the compression spring (11) away from the fixed frame (8) is fixedly connected to the inner wall of the feed hopper (2).

2. The polypropylene particle impurity screening device according to claim 1, characterized in that: The secondary screening component comprises a polarization motor (12), a buffer spring (13) and a screen plate (14); the polarization motor (12) is fixedly connected to one end of a screening housing (1); a fixed block (15) is fixedly connected to the inner wall of the screening housing (1); one end of the buffer spring (13) is fixedly connected to one side of the fixed block (15); the screen plate (14) is fixedly connected to one end of the buffer spring (13) away from the fixed block (15); one end of the screen plate (14) away from the buffer spring (13) is fixedly connected to two guide plates (16); the two guide plates (16) are slidably connected to the inner wall of a through hole opened on one side of the screening housing (1).

3. The polypropylene particle impurity screening device according to claim 2, characterized in that: The driving member is a servo motor (17), the servo motor (17) is fixedly connected to the top of the screening housing (1), and the output end of the servo motor (17) is fixedly connected to the bottom of the triangular rotating disk (4).

4. The polypropylene particle impurity screening device according to claim 3, characterized in that: The bottom wall of the screening housing (1) is provided with a discharge port (18), and the bottom wall of the screening housing (1) is inclined towards the discharge port (18).

5. The polypropylene particle impurity screening device according to claim 4, characterized in that: Two pulling handles (19) are fixedly connected to the top of the screening frame (9).

6. The polypropylene particle impurity screening device according to claim 5, characterized in that: The top of the screening housing (1) is provided with an inspection opening, and an inspection door (20) is hingedly connected to the inspection opening.

7. The polypropylene particle impurity screening device according to claim 6, characterized in that: A plurality of evenly arranged leg supports (21) are fixedly connected to the bottom of the screening housing (1), and a fixing frame (22) is fixedly connected between the plurality of leg supports (21).

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