Waste plastic film sand removing machine

Abstract

The utility model discloses a waste plastic film sand removing machine, which belongs to the field of plastic film recovery, and comprises a plurality of groups of racks, a shell is fixedly connected among the racks, a screen is fixedly connected among the inner walls of the shell, a sand removing mechanism is arranged in the shell, a conveyor belt is arranged among the racks, and the conveyor belt is positioned below the shell. Two sets of knocking assemblies which are symmetrical front and back are arranged below the screen, each knocking assembly comprises a fixed plate fixedly connected between the inner walls of the shell, a movable plate is arranged above the fixed plate and slidably connected between the inner walls of the shell, a spring is connected between the fixed plate and the movable plate, and a plurality of knocking rods are fixedly connected to the top of the movable plate. The knocking rod abuts against the screen, and two power assemblies are arranged in the shell. The screening device has the beneficial effects that the movable plate is driven by the power assembly to move downwards, the spring accumulates force, then the movable plate loses power and rapidly moves upwards under the action of the elastic force of the spring, the screen is knocked through the knocking rod, and the screen is prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of plastic film recycling, and in particular to a waste plastic film sand removal machine. Background Technology

[0002] A waste plastic film desanding machine is a mechanical device specifically designed to process waste plastic film and remove impurities such as sand and mud embedded within it. This equipment plays a crucial role in the recycling and reuse of waste plastics, significantly improving the purity and quality of the recycled plastics.

[0003] A search of Chinese Patent Publication No. CN218803351U reveals a waste plastic film sand removal machine. In this patent, multiple feed blades are arranged at an angle to the axis of the rotating main shaft. When the feed blades rotate, they create a large suction volume at the feed inlet, generating negative pressure to draw the waste plastic film material into the housing for separation. Multiple conveying blades are arranged spirally along the axis of the rotating main shaft, conveying the material. Simultaneously, the conveying blades impact and throw the material during rotation, separating the waste plastic film from impurities. Multiple discharge blades are arranged parallel to the axis of the rotating main shaft, discharging the separated waste plastic film from the inclined discharge port under the action of wind and spiral conveying. The separated impurities are discharged onto the conveyor belt through a screen at the bottom of the housing. This invention utilizes wind force and rotational throwing to fully separate the waste plastic film from impurities, resulting in a low impurity content in the separated waste plastic film, meeting the requirements for granulation and subsequent plastic product manufacturing.

[0004] During use, the separated impurities may clog the screen, preventing them from being discharged in a timely manner and thus affecting work efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a waste plastic film sand removal machine to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A waste plastic film sand removal machine includes multiple frames, with a housing fixedly connected between the frames. An arc-shaped screen is fixedly connected between the inner walls of the housing. A sand removal mechanism is installed inside the housing. A conveyor belt is installed between the frames, located below the housing. Two sets of symmetrical striking components are installed below the screen. Each striking component includes a fixed plate fixedly connected between the inner walls of the housing. A movable plate is installed above the fixed plate and slidably connected between the inner walls of the housing. A spring connects the fixed plate and the movable plate. Several striking rods are fixedly connected to the top of the movable plate and abut against the screen. Two sets of power components are installed inside the housing to drive the movable plate to move downward.

[0008] Preferably, the sand removal mechanism includes a rotary motor fixedly connected to one side of the housing. The output end of the rotary motor is connected to a rotary shaft via a coupling. The rotary shaft is rotatably connected between the inner walls of the housing, and a blade assembly is provided on the rotary shaft.

[0009] Preferably, the power assembly includes a rotating shaft rotatably connected between the inner walls of the housing, a plurality of cams fixedly connected to the rotating shaft, the cams being located above the movable plate, the initial positions of the tips of the front and rear sets of cams being different, and a transmission assembly being provided between the rotating shaft and the rotary shaft.

[0010] Preferably, the transmission assembly includes a first belt, a rotating shaft, and the ends of the rotating shafts extending out of the housing and connected to the first belt via pulleys, and a second belt connecting the two rotating shafts via pulleys.

[0011] Preferably, a guide rod is fixedly connected to the bottom of the movable plate, the bottom of the guide rod passes through the fixed plate and is fixedly connected to a limit plate, and the guide rod and the fixed plate are slidably connected.

[0012] Preferably, a feed hopper is fixedly connected to the top of the shell, and a discharge hopper is fixedly connected to the rear side of the shell, with the feed hopper and discharge hopper located at opposite ends of the shell.

[0013] The beneficial effects are as follows: the power component drives the movable plate to move downward, causing the spring to store force. Then, the movable plate loses power and moves upward quickly under the action of the spring force, striking the screen with the striking rod to prevent the screen from clogging. A transmission component is set between the power component and the rotating shaft, which enables the machine to be used for multiple purposes and improves resource utilization.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a waste plastic film sand removal machine according to the present invention;

[0017] Figure 2 This is a front view of a waste plastic film sand removal machine according to the present invention;

[0018] Figure 3 This is a top view of a waste plastic film sand removal machine according to the present invention;

[0019] Figure 4 This is a right view of the internal structure of the shell of the waste plastic film sand remover described in this utility model;

[0020] Figure 5 This is a left view of a waste plastic film sand removal machine according to the present invention;

[0021] Figure 6 This is a schematic diagram of the striking component and power component of a waste plastic film sander according to the present invention;

[0022] Figure 7 This is a front view of the striking component of a waste plastic film sander according to the present invention.

[0023] The reference numerals in the attached drawings are explained as follows: 1. Frame; 2. Housing; 201. Feed hopper; 202. Discharge hopper; 3. Screen; 401. Rotary motor; 402. Rotating shaft; 5. Conveyor belt; 601. Fixed plate; 602. Movable plate; 603. Spring; 604. Striking rod; 605. Rotating shaft; 606. Cam; 607. First belt; 608. Second belt; 7. Guide rod; 701. Limiting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-7 As shown, a waste plastic film sand removal machine includes multiple sets of frames 1, with shells 2 fixedly connected between the frames 1. A feed hopper 201 is fixedly connected to the top of the shell 2, and a discharge hopper 202 is fixedly connected to the rear side of the shell 2. The feed hopper 201 and the discharge hopper 202 are located at opposite ends of the shell 2. An arc-shaped screen 3 is fixedly connected between the inner walls of the shell 2. A conveyor belt 5 is provided between the frames 1 and is located below the shell 2 for conveying the removed sand and other impurities.

[0028] A sand removal mechanism is provided inside the housing 2. The sand removal mechanism includes a rotary motor 401 bolted to one side of the housing 2. The output end of the rotary motor 401 is connected to a rotary shaft 402 via a coupling. The rotary shaft 402 is rotatably connected between the inner walls of the housing 2. A blade assembly is provided on the rotary shaft 402. The blade assembly includes several feed blades, conveying blades, and discharge blades fixedly connected to the rotary shaft 402. The feed blades are located at the end of the rotary shaft 402 near the feed hopper 201, the discharge blades are located at the end of the rotary shaft 402 near the discharge hopper 202, and the conveying blades are located between the feed blades and the discharge blades. The feed blades are arranged at an angle to the axial direction of the rotary shaft 402, the conveying blades are spirally distributed along the axial direction of the rotary shaft 402, and the discharge blades are arranged parallel to the axial direction of the rotary shaft 402. The blade assembly adopts the prior art in the patent with publication number CN218803351U, which will not be described in detail.

[0029] Below the screen 3, there are two sets of symmetrically arranged striking components. The striking components include a fixed plate 601 fixedly connected to the inner wall of the housing 2, a movable plate 602 above the fixed plate 601, the movable plate 602 slidably connected to the inner wall of the housing 2, a spring 603 connecting the fixed plate 601 and the movable plate 602, several striking rods 604 fixedly connected to the top of the movable plate 602, the striking rods 604 abutting against the screen 3, and a guide rod 7 fixedly connected to the bottom of the movable plate 602. The bottom of the guide rod 7 passes through the fixed plate 601 and is fixedly connected to a limit plate 701. The guide rod 7 slidably connects to the fixed plate 601, and the guide rod 7 improves the stability of the movable plate 602.

[0030] The housing 2 is equipped with two sets of power components. The power components are used to drive the movable plate 602 to move downward. The power components include a rotating shaft 605 rotatably connected between the inner walls of the housing 2. Several cams 606 are fixedly connected to the rotating shaft 605. The cams 606 are located above the movable plate 602. The initial positions of the tips of the two sets of cams 606 are different, so that the two sets of striking rods 604 continuously strike the screen 3.

[0031] A transmission assembly is provided between the rotating shaft 605 and the rotating shaft 402. The transmission assembly includes a first belt 607. The ends of the rotating shaft 402 and the rotating shaft 605 extend out of the housing 2 and are connected to the first belt 607 via pulleys. A second belt 608 is connected between the two rotating shafts 605 via pulleys.

[0032] Working Principle: During operation, waste plastic film is fed into the housing 2 through the feed hopper 201. Simultaneously, the rotary motor 401 is started, driving the rotary shaft 402 to rotate the blade assembly. Multiple continuously rotating feed blades create a large suction volume at the feed hopper 201, drawing the waste plastic film into the housing 2. Several spirally distributed conveyor blades impact and throw the waste plastic film, separating sand and impurities from it. The plastic film is then conveyed to the discharge hopper 202, where rotating discharge blades facilitate its discharge through the inclined hopper. The separated sand and impurities are then discharged through the screen 3 onto the conveyor belt. 5. The screen is conveyed by the conveyor belt 5. While the rotating shaft 402 rotates, it drives one of the rotating shafts 605 to rotate through the transmission between the pulley and the first belt 607. The other rotating shaft 605 rotates synchronously through the transmission between the pulley and the second belt 608. The rotating shaft 605 drives the cam 606 to rotate. When the tip of the cam 606 abuts against the movable plate 602, the cam 606 drives the movable plate 602 to move the striking rod 604 downward. The spring 603 stores force. When the tip of the cam 606 rotates away, the movable plate 602 drives the striking rod 604 to move upward quickly under the action of the spring 603. The striking rod 604 strikes the screen 3 to prevent the screen 3 from clogging.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste plastic film sand removal machine, comprising multiple sets of frames (1), wherein a housing (2) is fixedly connected between the frames (1), and an arc-shaped screen (3) is fixedly connected between the inner walls of the housing (2), a sand removal mechanism is provided inside the housing (2), and a conveyor belt (5) is provided between the frames (1), wherein the conveyor belt (5) is located below the housing (2), characterized in that: Two sets of symmetrical striking components are provided below the screen (3). The striking components include a fixed plate (601) fixedly connected between the inner walls of the housing (2). A movable plate (602) is provided above the fixed plate (601). The movable plate (602) is slidably connected between the inner walls of the housing (2). A spring (603) is connected between the fixed plate (601) and the movable plate (602). Several striking rods (604) are fixedly connected to the top of the movable plate (602). The striking rods (604) abut against the screen (3). Two sets of power components are provided inside the housing (2). The power components are used to drive the movable plate (602) to move downward.

2. The waste plastic film sand removal machine according to claim 1, characterized in that: The sand removal mechanism includes a rotary motor (401) fixedly connected to one side of the housing (2). The output end of the rotary motor (401) is connected to a rotary shaft (402) via a coupling. The rotary shaft (402) is rotatably connected between the inner walls of the housing (2). A blade assembly is provided on the rotary shaft (402).

3. The waste plastic film sand removal machine according to claim 2, characterized in that: The power assembly includes a rotating shaft (605) rotatably connected between the inner wall of the housing (2). A plurality of cams (606) are fixedly connected to the rotating shaft (605). The cams (606) are located above the movable plate (602). The initial positions of the tips of the front and rear sets of cams (606) are different. A transmission assembly is provided between the rotating shaft (605) and the rotating shaft (402).

4. The waste plastic film sand removal machine according to claim 3, characterized in that: The transmission assembly includes a first belt (607), the ends of the rotating shaft (402) and the rotating shaft (605) extend out of the housing (2) and are connected to the first belt (607) via pulleys, and a second belt (608) is connected between the two rotating shafts (605) via pulleys.

5. The waste plastic film sand removal machine according to claim 1, characterized in that: A guide rod (7) is fixedly connected to the bottom of the movable plate (602). The bottom of the guide rod (7) passes through the fixed plate (601) and is fixedly connected to a limiting plate (701). The guide rod (7) and the fixed plate (601) are slidably connected.

6. The waste plastic film sand removal machine according to claim 1, characterized in that: A feed hopper (201) is fixedly connected to the top of the housing (2), and a discharge hopper (202) is fixedly connected to the rear side of the housing (2). The feed hopper (201) and the discharge hopper (202) are located at the two ends of the housing (2), respectively.

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