Raw material feeding hopper filtering device

Abstract

This utility model provides a raw material feeding hopper filtration device, relating to the field of plastic processing technology. It includes a feeding hopper body, with a filtration and discharge mechanism located below the feeding hopper body. The filtration and discharge mechanism includes an arc-shaped filter housing, the upper end of which is fixedly connected to the lower end of the feeding hopper body. A drive rod is rotatably connected to the rear inner wall of the arc-shaped filter housing, and a filter plate is fixedly sleeved on the outside of the drive rod. Through the filtration and discharge mechanism, the arc-shaped filter housing, drive rod, and filter plate work together to separate large and small plastic particles. An arc-shaped baffle, servo electric cylinder, moving rack, and flat gear work together to automatically discharge large particles, eliminating the need for manual cleaning and reducing labor intensity. Furthermore, a reciprocating feeding mechanism, driven by a servo motor, drive disc, and lever, moves a moving block and feeding plate reciprocally, promoting rapid filtration of small particles, improving filtration efficiency, and solving the problems of low efficiency and high labor intensity associated with manual cleaning. This ensures the continuity and quality of plastic particle melting and processing.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, and in particular to a raw material feed hopper filter device. Background Technology

[0002] Plastic pellets have a wide range of applications. In daily life, recycled pellets can be used to manufacture various plastic bags, buckets, basins, toys, furniture, stationery and other household items and various plastic products. In the clothing industry, they can be used to manufacture clothing, ties, buttons and zippers. In the building materials industry, the derivative of recycled plastic pellets, wood-plastic composite profiles, are used to manufacture various building components, plastic doors and windows, etc. In the melting and processing of plastic pellets, the filtration process at the feed hopper is crucial. Its purpose is to intercept larger particles, ensure sufficient melting, and guarantee the quality of subsequent processing.

[0003] Currently, filters are commonly used for interception. However, in actual production, as filtration continues, large plastic particles accumulate on top of the filter. When the accumulation reaches a certain level, the particle buildup reduces the effective filtration area of ​​the filter, causing a decrease in filtration speed and affecting feeding efficiency. At this point, the particles on the filter need to be cleaned manually. Manual operation not only involves long downtime but also consumes a lot of physical strength and has extremely low cleaning efficiency, seriously affecting production efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the current practice of manually cleaning plastic particles from filter screens, which is not only labor-intensive but also leads to reduced production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A raw material feeding hopper filtration device includes a feeding hopper body, a filtration and discharge mechanism disposed below the feeding hopper body, the filtration and discharge mechanism including an arc-shaped filter housing, the upper end of the arc-shaped filter housing being fixedly connected to the lower end of the feeding hopper body, a drive rod being rotatably connected to the rear inner wall of the arc-shaped filter housing, a filter plate being fixedly sleeved on the outside of the drive rod, the outside of the filter plate being rotatably sleeved with the inside of the arc-shaped filter housing, one end of the drive rod penetrating to the front of the arc-shaped filter housing and fixedly sleeved with a flat gear, and a reciprocating feeding mechanism being disposed at the upper end of the feeding hopper body.

[0007] Preferably, an arc-shaped baffle is fixedly connected to the lower part of one end of the filter plate, the outer side of the arc-shaped baffle is in contact with the inner surface of the arc-shaped filter housing, and a servo electric cylinder is fixedly installed on the front side of the arc-shaped filter housing.

[0008] Preferably, a connecting block is fixedly connected to one end of the piston rod of the servo electric cylinder, and a movable rack is fixedly connected to the upper end of the connecting block, wherein the tooth surface of the movable rack meshes with the tooth surface of the spur gear.

[0009] Preferably, the lower end of the arc-shaped filter housing is fixedly connected to a feed pipe, and the outside of the arc-shaped filter housing is fixedly connected to a discharge pipe.

[0010] Preferably, the reciprocating feeding mechanism includes a fixed frame, both ends of which are fixedly connected to the upper end of the feed hopper body. The inner walls on both sides of the fixed frame are slidably fitted with symmetrically distributed sliding rods, and the surfaces of the two sliding rods opposite each other are fixedly connected with moving blocks.

[0011] Preferably, the upper end of the movable block is provided with a sliding groove, the lower end of the movable block is fixedly connected with a vertical rod, the lower end of the vertical rod is fixedly connected with a material-pushing plate, the lower end of the material-pushing plate contacts the upper end of the filter plate, and a servo motor is fixedly installed on the upper end of the fixed frame.

[0012] Preferably, the output shaft of the servo motor is fixedly mounted with a rotating shaft via a coupling. One end of the rotating shaft passes through a fixing frame and is fixedly sleeved with a drive disk. The lower end of the drive disk is fixedly connected with a lever, and one end of the lever is slidably sleeved with the inner wall of the actuating groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, the arc-shaped filter housing, drive rod, and filter plate work together in the filter discharge mechanism to separate large and small plastic particles. The arc-shaped baffle, servo electric cylinder, moving rack and pinion are linked to automatically discharge large particles, eliminating the need for manual cleaning and reducing labor intensity. Furthermore, the reciprocating feeding mechanism, through a servo motor, drive disc, and lever, drives the moving block and feeding plate to reciprocate, promoting rapid filtration of small particles, improving filtration efficiency, solving the problems of low efficiency and high labor intensity of manual cleaning, and ensuring the continuity and quality of plastic particle melting processing. Attached Figure Description

[0015] Figure 1 A schematic diagram of the main structure of a raw material feed hopper filtration device provided by this utility model;

[0016] Figure 2 A perspective view of the arc-shaped filter housing structure of a raw material feed hopper filter device provided by this utility model;

[0017] Figure 3 A perspective view of the filter plate structure of a raw material feed hopper filtration device provided by this utility model;

[0018] Figure 4An exploded view of the drive disc structure of a raw material feed hopper filter device provided by this utility model.

[0019] Legend: 1. Feed hopper body; 2. Arc-shaped filter housing; 21. Drive rod; 22. Filter plate; 23. Flat gear; 24. Arc-shaped baffle; 25. Servo electric cylinder; 26. Connecting block; 27. Moving rack; 28. Feed pipe; 29. ​​Discharge pipe; 3. Fixed frame; 31. Slide rod; 32. Moving block; 33. Actuating slide groove; 34. Vertical rod; 35. Material actuating plate; 36. Servo motor; 37. Rotating shaft; 38. Drive disk; 39. Actuating rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Example

[0025] like Figures 1-4As shown, this utility model provides a technical solution: a raw material feeding hopper filtration device, including a feeding hopper body 1, a filtration and discharge mechanism at the bottom of the feeding hopper body 1, and a reciprocating feeding mechanism at the top. It relies on an external PLC controller to integrate and control the linkage of various components to realize automated filtration and cleaning.

[0026] The arc-shaped filter housing 2 provides a stable installation and working space for the filter plate 22. Its arc design facilitates material flow and filtration. The filter plate 22 can effectively intercept large plastic particles, achieving initial separation of large and small particles. During operation, the filter plate 22 can rotate around the drive rod 21, facilitating the subsequent discharge of large particles and improving the flexibility and practicality of filtration.

[0027] The drive rod 21 serves as the rotation shaft of the filter plate 22, enabling stable power transmission and allowing the filter plate 22 to rotate. The spur gear 23 is fixedly sleeved on one end of the drive rod 21 and meshes with the moving rack 27, providing a power transmission path for the rotation of the filter plate 22. Through this gear and rack transmission method, precise control of the rotation of the filter plate 22 can be achieved, ensuring that the filter plate 22 can be accurately and stably rotated to a suitable angle when large particles need to be discharged, thus ensuring the smooth discharge of large particles.

[0028] The arc-shaped baffle 24 is fixedly connected to the lower end of one end of the filter plate 22. Its outer side is in contact with the inner surface of the arc-shaped filter housing 2. When the filter plate 22 is in a horizontal filtration state, it can effectively block the discharge pipe 29, so that the small plastic particles can only be discharged from the feed pipe 28, ensuring the correct flow direction of the filtered small plastic particles and ensuring the normal feeding of the subsequent melting process.

[0029] When the filter plate 22 is flipped, the arc-shaped baffle 24 can rotate with the filter plate 22, break away from the obstruction of the discharge pipe 29, and provide a channel for the discharge of large plastic particles, thus realizing the orderly switching of filtration and slag discharge functions.

[0030] The servo electric cylinder 25 can provide stable linear motion power. The extension and retraction of its piston rod can drive the moving rack 27 to move horizontally through the connecting block 26. The moving rack 27 meshes with the spur gear 23, converting the linear motion into the rotational motion of the spur gear 23, thereby driving the filter plate 22 to flip. This electric cylinder drive method can achieve precise control of the flipping action of the filter plate 22, which is convenient for timely slag discharge operation according to the large particle accumulation, and improves the automation level and slag discharge efficiency of the device.

[0031] The feed pipe 28 is used to transport the filtered small plastic particles to the subsequent melting process, ensuring the continuity of the production process. The discharge pipe 29 discharges and collects the large plastic particles when the filter plate 22 is flipped to discharge slag, realizing the effective cleaning and recycling of the large plastic particles. The setting of these two pipes clarifies the flow direction of the materials, so that the filtered small particles and the large particles that need to be cleaned can be discharged in an orderly manner, improving the practicality and functionality of the device.

[0032] The fixed frame 3 provides a stable installation base for the entire reciprocating feeding mechanism. Its two ends are fixedly connected to the upper end of the feeding hopper body 1, ensuring the stability of the mechanism during operation. The slide bar 31 adopts a rectangular bar design, which can prevent the moving block 32 from rotating freely during the sliding process, ensuring the stability and accuracy of the movement of the moving block 32. The slide bar 31 is slidably sleeved with the inner walls on both sides of the fixed frame 3, providing guidance and support for the reciprocating movement of the moving block 32.

[0033] The movable block 32 slides back and forth on the slide bar 31. The vertical bar 34 at its lower end can drive the material-pushing plate 35 to move synchronously. The lower end of the material-pushing plate 35 contacts the upper end of the filter plate 22. During the reciprocating motion, it can push the material on the filter plate 22, so that the material is evenly distributed on the filter plate 22, which promotes the passage of small plastic particles through the filter holes of the filter plate 22 and improves the filtration efficiency. At the same time, the material-pushing action can prevent large plastic particles from accumulating too much on the filter plate 22, avoid affecting the filtration effect, and ensure the stable operation of the device.

[0034] The servo motor 36 serves as a power source, enabling precise control of the rotation of the shaft 37. The shaft 37 is connected to the output shaft of the servo motor 36 via a coupling, driving the drive disk 38 to rotate. The lever 39 at the lower end of the drive disk 38 is embedded in the actuation groove 33 of the moving block 32. When the drive disk 38 rotates, the lever 39 makes a circular motion within the actuation groove 33, pushing the moving block 32 to slide back and forth along the slide bar 31, ensuring the frequency and amplitude of material feeding, and improving the feeding effect and filtration efficiency.

[0035] The sliding groove 33 is located at the upper end of the moving block 32, providing space for the movement of the lever 39. Its shape and size are adapted to the lever 39, ensuring that the lever 39 can smoothly push the moving block 32 to slide back and forth during the movement, realizing the effective transmission of power from the drive disk 38 to the moving block 32, and ensuring the normal operation of the reciprocating material feeding mechanism.

[0036] The working process of this utility model:

[0037] Step 1: The device is integrated and controlled by an external PLC controller. The operator pours the plastic granules to be filtered into the feed hopper body 1. The granules fall by gravity and enter the filter plate 22 inside the arc-shaped filter housing 2. The servo motor 36 is started by the control system. The output shaft of the motor drives the rotating shaft 37 to rotate through the coupling. The drive disk 38 rotates synchronously with the rotating shaft 37. When the drive disk 38 rotates, the lever 39 makes a circular motion in the sliding groove 33, pushing the moving block 32 to slide back and forth along the sliding rod 31 of the fixed frame 3. The vertical rod 34 at the lower end of the moving block 32 drives the material feeding plate 35 to make a reciprocating linear motion on the upper surface of the filter plate 22, continuously feeding the material. During the reciprocating motion of the material feeding plate 35, small plastic granules fall through the filter holes of the filter plate 22. They are blocked by the arc-shaped baffle 24 and cannot enter the discharge pipe 29. They can only slide down along the inner wall of the arc-shaped filter housing 2 and finally be discharged from the feed pipe 28 to enter the subsequent melting process.

[0038] Step two: Using an external particle accumulation height sensor, the system determines that large particles have accumulated on the filter plate 22 to the point where cleaning is required. The control system issues a slag discharge command, and the servo motor 36 continues to run until the material-pushing plate 35 moves to the far right of the filter plate 22. Then, the servo motor 36 is turned off, and the material-pushing plate 35 stops on the right side to wait. The control system then activates the servo electric cylinder 25, and the piston rod of the electric cylinder extends, pushing the connecting block 26 to move horizontally. The moving rack 27 at the upper end of the connecting block 26 slides synchronously and meshes with the flat gear 23 at one end of the drive rod 21. When the filter plate 22 rotates, the drive rod 21 rotates. As the drive rod 21 rotates, the filter plate 22 rotates synchronously around the axis of the drive rod 21, gradually changing from a horizontal filtration state to an inclined state. At the same time, the arc-shaped baffle 24 at one end of the filter plate 22 rotates with the filter plate 22, breaking free from the obstruction of the discharge pipe 29. The discharge pipe 29 opens, and after the filter plate 22 tilts, the accumulated large plastic particles roll and slide down the upper surface of the filter plate 22 towards the discharge pipe 29 due to gravity. They are then discharged through the discharge pipe 29 to the pre-prepared collection container, completing the cleaning of large particles.

[0039] Step 3: After the large particles are discharged, the control system reverses the start of the servo electric cylinder 25, the piston rod retracts, driving the moving rack 27 to slide in the opposite direction, the flat gear 23 and the drive rod 21 reverse, the filter plate 22 returns to the horizontal filtration state, the arc baffle 24 re-closes the discharge pipe 29, the control system restarts the servo motor 36, the rotating shaft 37 and the drive disk 38 rotate again, the lever 39 drives the moving block 32 and the material feeding plate 35 to resume left and right reciprocating motion, waiting for the next batch of material to be fed.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material feed hopper filtration device, comprising a feed hopper body (1), characterized in that: A filter discharge mechanism is provided below the feed hopper body (1); The filter discharge mechanism includes an arc-shaped filter housing (2), the upper end of which is fixedly connected to the lower end of the feed hopper body (1), a drive rod (21) is rotatably connected to the rear inner wall of the arc-shaped filter housing (2), a filter plate (22) is fixedly sleeved on the outside of the drive rod (21), the outside of the filter plate (22) is rotatably sleeved with the inside of the arc-shaped filter housing (2), and one end of the drive rod (21) penetrates to the front of the arc-shaped filter housing (2) and is fixedly sleeved with a flat gear (23); The upper end of the feed hopper body (1) is provided with a reciprocating feeding mechanism.

2. The raw material feed hopper filter device according to claim 1, characterized in that: An arc-shaped baffle (24) is fixedly connected to one end of the filter plate (22). The outer side of the arc-shaped baffle (24) is in contact with the inner surface of the arc-shaped filter housing (2). A servo electric cylinder (25) is fixedly installed on the front side of the arc-shaped filter housing (2).

3. The raw material feed hopper filter device according to claim 2, characterized in that: One end of the piston rod of the servo electric cylinder (25) is fixedly connected to a connecting block (26), and the upper end of the connecting block (26) is fixedly connected to a movable rack (27). The tooth surface of the movable rack (27) meshes with the tooth surface of the spur gear (23).

4. The raw material feed hopper filter device according to claim 1, characterized in that: The lower end of the arc-shaped filter housing (2) is fixedly connected to a feed pipe (28), and the outside of the arc-shaped filter housing (2) is fixedly connected to a discharge pipe (29).

5. The raw material feed hopper filter device according to claim 1, characterized in that: The reciprocating feeding mechanism includes a fixed frame (3), both ends of which are fixedly connected to the upper end of the feed hopper body (1). The inner walls on both sides of the fixed frame (3) are slidably fitted with sliding rods (31) that are symmetrically distributed. The surfaces of the two sliding rods (31) opposite each other are fixedly connected with moving blocks (32).

6. The raw material feed hopper filter device according to claim 5, characterized in that: The upper end of the movable block (32) is provided with a sliding groove (33), the lower end of the movable block (32) is fixedly connected with a vertical rod (34), the lower end of the vertical rod (34) is fixedly connected with a material feeding plate (35), the lower end of the material feeding plate (35) is in contact with the upper end of the filter plate (22), and a servo motor (36) is fixedly installed on the upper end of the fixed frame (3).

7. A raw material feed hopper filter device according to claim 6, characterized in that: The output shaft of the servo motor (36) is fixedly mounted with a rotating shaft (37) via a coupling. One end of the rotating shaft (37) passes through the fixing frame (3) and is fixedly sleeved with a drive disk (38). The lower end of the drive disk (38) is fixedly connected with a lever (39). One end of the lever (39) is slidably sleeved with the inner wall of the actuating groove (33).

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