Labor-saving structure of manual screen changer

Abstract

The utility model discloses a manual screen changer of labor saving structure, include: first mounting piece and second mounting piece, first mounting piece and second mounting piece center symmetry are equipped with the discharge gate, and the movable joint of first mounting piece and second mounting piece is between the dynamic board, and first mounting piece and second mounting piece top symmetry are equipped with the axle seat support, be equipped with a plurality of recesses on the dynamic board, and the recess bottom is equipped with the filter hole, and the dynamic board edge is equipped with a plurality of protruding teeth, the rotary joint of axle seat support is connected with the rotary rod, and one end fixed connection of rotary rod is between two axle seat supports small gear, and the toothed connection of small gear is connected with the big gear, the toothed connection of small gear, big gear and dynamic board. The present application realizes "small force drive heavy load" with simple mechanical principle, and the double station rotation is used to replace the shutdown dismounting, and the two defects of traditional manual screen change, such as hard work, low efficiency, are solved from the root.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic extruder equipment, and more specifically to a manual screen changer with a labor-saving structure. Background Technology

[0002] The screen changer on a plastic extruder plays a crucial role in the plastic extrusion process. Its main purpose is to filter out foreign particulate impurities and unplasticized fine plastic particles from the plasticized material, ensuring the purity and quality of the plasticized material. The screen changer effectively prevents impurities from entering the production process through its internal filter screen, thereby avoiding defective products and interruptions in extruded products, reducing waste and lowering production costs. At the same time, the screen changer can also improve the plasticization and homogenization of raw materials, resulting in a more uniform product texture, better surface quality and smoothness. In addition, the screen changer can be adjusted according to actual production needs to improve production efficiency.

[0003] Utility model patent application number 201720128664.5 discloses a non-stop manual screen changer, including: a flange, a screen changing body, a screen changing movable plate, a filter plate, a right-angle flow body, and a screen changing wrench. The screen changing body is fixedly connected to the flange, the filter plate is movably disposed within the screen changing movable plate, the screen changing movable plate is connected to the screen changing wrench, the right-angle flow body is connected to the screen changing body via a screw, the screen changing movable plate is disposed between the right-angle flow body and the screen changing body, and can rotate within the gap between the right-angle flow body and the screen changing body. The screen changing movable plate, the screen changing body, and the right-angle flow body cooperate concentrically to form a right-angle flow channel. This screen changer achieves non-stop screen changing, is simple and convenient to operate, has minimal wear on parts, and produces no waste during screen changing. However, pulling the screen changing wrench during screen changing causes friction with the screen movable plate, increasing the difficulty of pulling the wrench.

[0004] Therefore, there is an urgent need to design a simple, fast, time-saving, and labor-saving manual screen changer. Utility Model Content

[0005] This invention provides a manual screen changer with a labor-saving structure to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides a labor-saving manual screen changer, comprising: a first mounting component and a second mounting component, with symmetrical discharge ports at the center of the first and second mounting components, a movable plate movably connected between the first and second mounting components, and symmetrical shaft supports at the top of the first and second mounting components; the movable plate has multiple grooves, with filter holes at the bottom of the grooves, and multiple protruding teeth on the edge of the movable plate; a rotating rod is rotatably connected to the shaft support, and a small gear is fixedly connected to one end of the rotating rod between the two shaft supports, with the small gear meshing with a large gear; the small gear, the large gear, and the movable plate are meshed together.

[0007] Preferably, the moving plate has two grooves and a through hole inside.

[0008] Preferably, the rotating rod protrudes from one of the bearing supports, and the protruding end of the rotating rod is a hexagonal protrusion.

[0009] Preferably, the first mounting component and the second mounting component are fixedly connected by multiple sleeve rods.

[0010] Preferably, a fixed shaft is provided between the first mounting member and the second mounting member. The fixed shaft passes through a through hole in the moving plate, so that the moving plate can rotate between the first mounting member and the second mounting member.

[0011] Preferably, the first mounting component has notches on the left and right sides corresponding to the grooves on the moving plate to facilitate screen replacement and cleaning.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] Ease of operation: The small gear drives the large gear, and the large gear meshes with the moving plate teeth to form a two-stage mechanical force amplification. Combined with the lever action of the wrench at the hexagonal end of the rotating rod, operation is more effortless and completely eliminates manual pulling and friction.

[0014] Production continuity: The symmetrical design of the moving plate with double grooves forms a dual-filter instant switching station. The filter can be changed by rotating the moving plate, eliminating downtime losses.

[0015] Simplified structure: It consists of only three core components: gear set, moving plate, and mounting parts. There are no complex circuits or hydraulic systems, so the structure is simple and the cost is low.

[0016] This application uses simple mechanical principles to achieve "low-force driving heavy loads" and replaces the need for stopping to disassemble and assemble with dual-station rotation, thus fundamentally solving the two major defects of traditional manual screen replacement: laboriousness and inefficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 The attached figure is a schematic diagram of this utility model.

[0019] Figure 2 The attached figure is an exploded view of this utility model.

[0020] Figure 3 The attached figure shows the movable plate of this utility model.

[0021] Figure 4 The attached figure shows the internal installation diagram of this utility model.

[0022] Reference numerals in the attached drawings: 1. First mounting component; 2. Second mounting component; 3. Moving plate; 4. Shaft support; 5. Pinion; 6. Gear; 7. Rotating rod; 8. Fixed shaft; 9. Sleeve; 31. Groove; 32. Protruding tooth; 33. Through hole. Detailed Implementation

[0023] To facilitate understanding by those skilled in the art, various embodiments of this patent will be described below with reference to text and accompanying drawings. For clarity, many practical details will be explained in the following description. However, it should be understood that these practical details in the specification should not be used to limit this patent. That is, in some embodiments of this patent, these practical details are not essential. Furthermore, for ease of understanding, some conventional structures and components will be illustrated in the drawings in a simple schematic manner.

[0024] In the description of this patent, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "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 patent 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 patent.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this patent, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this patent, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0027] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this patent.

[0028] Please see the appendix Figure 1-4 This utility model discloses a labor-saving manual screen changer, comprising: a first mounting component 1 and a second mounting component 2, with symmetrical discharge ports at the center of the first mounting component 1 and the second mounting component 2, and a movable plate 3 movably connected between the first mounting component 1 and the second mounting component 2. The movable plate 3 has multiple grooves 31, with filter holes at the bottom of the grooves 31, and multiple protruding teeth 32 on the edge of the movable plate 3. The movable plate 3 has two grooves 31, and a through hole 33 is provided inside the movable plate 3.

[0029] The dual groove 31 design enables dual filter stations, allowing for filter replacement without stopping the machine; simply rotate the moving plate 3 to switch to the spare filter.

[0030] To further optimize the above technical solution, notches are provided on the left and right sides of the first mounting component corresponding to the grooves on the moving plate to facilitate screen replacement and cleaning. The notches shorten the working distance of the gear set, making screen replacement easier.

[0031] To further optimize the above technical solution, the first mounting component 1 and the second mounting component 2 are symmetrically provided with shaft support 4 at their tops; a rotating rod 7 is rotatably connected to the shaft support 4, and a small gear 5 is fixedly connected to one end of the rotating rod 7 between the two shaft support 4, and the small gear 5 is meshed with a large gear 6; the small gear 5, the large gear 6 and the moving plate 3 are meshed together.

[0032] The gear set (small gear → large gear → moving plate teeth) forms a two-stage speed reduction and torque increase. The operator only needs to turn the lever slightly to drive the moving plate, which solves the problem of laborious manual screen changing in the past.

[0033] To further optimize the above technical solution, the rotating rod 7 protrudes from one of the bearing supports 4, and the protruding end of the rotating rod 7 is a hexagonal protrusion.

[0034] The hexagonal protrusion is compatible with standard wrenches, and the torque is amplified by levering the tool, requiring only one-eighth of the torque needed for manual tightening.

[0035] To further optimize the above technical solution, the first mounting component 1 and the second mounting component 2 are fixedly connected by multiple sleeve rods 9.

[0036] The sleeve rod 9 has a multi-point locking installation component to prevent sealing failure or increased friction caused by structural deformation during screen replacement. The sleeve rod 9 forms a rigid frame to withstand the pressure of the extruder head and ensure that the rotation clearance of the moving plate 3 is constant.

[0037] To further optimize the above technical solution, a fixed shaft 8 is provided between the first mounting component 1 and the second mounting component 2. The fixed shaft 8 passes through the through hole 33 on the moving plate 3, so that the moving plate 3 can rotate between the first mounting component 1 and the second mounting component 2.

[0038] The moving plate 3 rotates around the fixed shaft 9, the shaft bears radial force, and the protruding teeth 32 only transmit torque, thus extending the gear life.

[0039] When in use, use a wrench or other tools to hold the hexagonal protrusion on the rotating rod 7 and rotate it. Then, the small gear 5 on the rotating rod 7 drives the large gear 6 to rotate, which drives the moving plate 3 to rotate around the fixed shaft rod 8. At this time, the grooves corresponding to the discharge ports on the moving plate 3 and the first mounting part 1 and the second mounting part 2 are switched to the other side, switching the filter screen position and achieving the purpose of screen replacement.

[0040] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A manual screen changer with a labor-saving structure, characterized in that, include: The first mounting part (1) and the second mounting part (2) are symmetrically provided with discharge ports at the center of the first mounting part (1) and the second mounting part (2). The first mounting part (1) and the second mounting part (2) are movably connected to a moving plate (3). The first mounting part (1) and the second mounting part (2) are symmetrically provided with shaft seat supports (4) at the top. The moving plate (3) is provided with multiple grooves (31). The bottom of the grooves (31) is provided with filter holes. The edge of the moving plate (3) is provided with multiple protruding teeth (32). The shaft seat support (4) is rotatably connected to a rotating rod (7). The rotating rod (7) is fixedly connected to a small gear (5) at one end between the two shaft seat supports (4). The small gear (5) is meshed with a large gear (6). The small gear (5), the large gear (6) and the moving plate (3) are meshed.

2. The manual screen changer with a labor-saving structure according to claim 1, characterized in that, The moving plate (3) has two grooves (31) and a through hole (33) inside.

3. The manual screen changer with a labor-saving structure according to claim 1, characterized in that, The rotating rod (7) protrudes from one of the bearing supports (4), and the protruding end of the rotating rod (7) is a hexagonal protrusion.

4. The manual screen changer with a labor-saving structure according to claim 1, characterized in that, The first mounting component (1) and the second mounting component (2) are fixedly connected by a plurality of sleeve rods (9).

5. The manual screen changer with a labor-saving structure according to claim 1, characterized in that, A fixed shaft (8) is provided between the first mounting part (1) and the second mounting part (2). The fixed shaft (8) passes through the through hole (33) on the moving plate (3) so that the moving plate (3) rotates between the first mounting part (1) and the second mounting part (2).

6. The manual screen changer with a labor-saving structure according to claim 1, characterized in that, The first mounting component (1) has notches on the left and right sides corresponding to the grooves (31) on the moving plate (3) to facilitate screen replacement and cleaning.

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