Flow guiding and collecting device for preventing spraying material from splashing for double-screw extruder

Abstract

The utility model belongs to the technical field of devices for extruders, and particularly relates to a flow guiding and collecting device for a double-screw extruder and capable of preventing spraying materials from splashing, which comprises a hollow cover body, a first opening is arranged at one end of the hollow cover body close to the extruder, and a material collecting plate is arranged in the hollow cover body. The material collecting plate can divide an inner cavity of the hollow cover body into a collecting cavity body and an avoiding cavity body in the vertical direction, a smooth flow guide face is arranged on the inner cavity wall of the collecting cavity body, the smooth flow guide face can guide splashing materials to the material collecting plate and store the splashing materials in the collecting cavity body, a second opening is formed in the bottom of the avoiding cavity body, and the second opening is communicated with the collecting cavity body. And the second opening can avoid the formed extrusion material. The hollow cover body is divided into the collecting cavity used for collecting splashing materials and the avoiding cavity used for avoiding formed extrusion materials through the material collecting plate, so that the situation that the splashing materials are accumulated in the cooling water tank is reduced, and the splashing materials are accumulated on the material collecting plate in cooperation with a smooth flow guide face.

Description

Technical Field

[0001] This utility model belongs to the technical field of extruder devices, and particularly relates to a flow guiding and collecting device for preventing material splashing in a twin-screw extruder. Background Technology

[0002] During the processing of twin-screw extruders, molten material is prone to splashing from the vent, feed port, or die gaps due to differences in material flowability, sudden changes in die head pressure, or poor venting. Existing technology uses a cover structure installed at the discharge end of the twin-screw extruder, but this structure has the following shortcomings: the cover structure only serves to prevent splashing; the splashed material easily accumulates in the cooling water tank used to cool the extruded material for molding, making cleaning and recycling difficult. Utility Model Content

[0003] The purpose of this invention is to provide a flow guiding and collection device for preventing material splashing in a twin-screw extruder, aiming to solve the technical problems in the prior art.

[0004] To achieve the above objectives, the present invention provides a flow guiding and collecting device for preventing material splashing in a twin-screw extruder, comprising a hollow cover. The hollow cover has a first opening at one end near the extruder. A collecting plate is provided inside the hollow cover. The collecting plate can vertically divide the inner cavity of the hollow cover into a collecting cavity and a clearance cavity. The inner wall of the collecting cavity is provided with a smooth guiding surface, which can guide the splashed material to the collecting plate and store it in the collecting cavity. The bottom of the clearance cavity is provided with a second opening, which can prevent the extruded material from being extruded.

[0005] Optionally, the hollow cover includes a connected end plate, a top plate, a front side plate, and a rear side plate. The end plate, the front side plate, and the rear side plate surround a cavity structure with openings at the ends and bottom. The top plate is detachably fixed to the top of the cavity structure.

[0006] Optionally, it also includes several tensioning blocks, the fixed end of which is connected to the front side plate and the rear side plate of the cover by screws, and the free end acts on the top of the top plate of the cover. The top of the front side plate and the rear side plate of the cover are respectively provided with grooves, and a pair of grooves act on the bottom of the top plate of the cover.

[0007] Optionally, the front panel of the cover may be made of a transparent sheet material.

[0008] Optionally, the top plate, the rear side plate, and the end plate are all made of high-temperature resistant stainless steel.

[0009] Optionally, the top plate, the rear side plate, and the end plate are made of aluminum alloy and their inner surfaces are coated with Teflon.

[0010] Optionally, it also includes several support structures, which are provided vertically on the inner wall of the hollow cover and can provide vertical support for the aggregate plate.

[0011] Optionally, the support structure includes a plurality of support plates spaced apart along the length of the hollow cover, and the aggregate plate is detachably stacked on top of the support plates.

[0012] Optionally, the support structure has three layers, and each layer of the support structure includes six support plates.

[0013] Optionally, it also includes a positioning protrusion, which is located at one end of the collecting plate near the first opening, and the support plate has a slot adapted to the positioning protrusion.

[0014] The above-mentioned one or more technical solutions of the anti-splashing guide and collection device for twin-screw extruders provided in this utility model embodiment have at least one of the following technical effects: by using a collecting plate to divide the hollow cover into a collecting cavity for collecting splashed material and a clearance cavity for avoiding extruded material during molding, the accumulation of splashed material in the cooling water tank is reduced. With the help of a smooth guide surface, the splashed material is accumulated on the collecting plate. Compared with the prior art, this application uses two independent cavities to achieve material collection and material clearance, which is beneficial to reduce the cleaning difficulty during operation and improve the recovery rate of splashed material. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the hollow cover provided in an embodiment of the present utility model.

[0017] Figure 2 An exploded view of the components of the hollow cover provided in this embodiment of the utility model.

[0018] Figure 3 This is one of the schematic diagrams of the working state provided in the embodiment of this utility model.

[0019] Figure 4This is the second schematic diagram of the working state provided for an embodiment of the present utility model.

[0020] The following are the labeling elements in the figure:

[0021] 1—Hollow housing 11—First opening 12—Collection chamber

[0022] 13—Avoidance cavity 14—Smooth guide surface 15—Second opening

[0023] 16—End plate of the cover; 17—Top plate of the cover; 171—Tightening block

[0024] 18—Front side panel of the cover; 19—Rear side panel of the cover; 191—Support plate

[0025] 1911—Slot 2—Collecting Plate 21—Positioning Protrusion

[0026] 22—Avoidance gap; 3—Cooling water tank; 4—Extruder

[0027] 5—Splashed material; 6—Extruded material. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "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 drawings. They are only for the convenience of describing the embodiments of 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.

[0030] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 embodiment of the invention according to the specific circumstances.

[0032] In one embodiment of this utility model, such as Figures 1-4 As shown, a flow guiding and collecting device for preventing material splashing in a twin-screw extruder is provided, including a hollow cover 1. The hollow cover 1 has a first opening 11 at one end near the extruder 4. A collecting plate 2 is provided inside the hollow cover 1. The collecting plate 2 can vertically divide the inner cavity of the hollow cover 1 into a collecting cavity 12 and a clearance cavity 13. The inner wall of the collecting cavity 12 is provided with a smooth guiding surface 14. The smooth guiding surface 14 can guide the splashed material 5 to the collecting plate 2 and store it in the collecting cavity 12. The bottom of the clearance cavity 13 is provided with a second opening 15, which can avoid the extruded material being formed. By using a collecting plate 2 to divide the hollow cover 1 into a collecting cavity 12 for collecting splashed material 5 and a clearance cavity 13 for avoiding the extruded material being formed, the accumulation of splashed material 5 in the cooling water tank 3 is reduced. The smooth guide surface 14 helps the splashed material accumulate on the collecting plate 2. Compared with the prior art, this application utilizes two independent cavities to achieve material collection and clearance, which helps reduce the cleaning difficulty during operation and improves the recovery rate of splashed material 5. Specifically, during operation, the second opening 15 of the hollow cover 1 is placed above the cooling water tank 3 for receiving the extruded material 6, and the first opening 11 faces the die head end of the twin-screw extruder 4. Furthermore, the collecting plate 2 has a clearance notch 22 at one end near the die head end of the twin-screw extruder 4. The clearance notch 22 is used to avoid the extruded material 6 being formed, which helps to reduce the distance between the hollow cover 1 and the twin-screw extruder 4, further improving the recovery rate of splashed material 5.

[0033] In one embodiment of this utility model, such as Figure 2 As shown, the hollow cover 1 includes a connected end plate 16, a top plate 17, a front side plate 18, and a rear side plate 19. The end plate 16, the front side plate 18, and the rear side plate 19 surround and form a cavity structure with openings at the ends and bottom. The top plate 17 is detachably fixed to the top of the cavity structure. Specifically, the end plate 16, the front side plate 18, and the rear side plate 19 are fixed with screws and surround and form a U-shaped cavity structure.

[0034] In one embodiment of this utility model, such as Figure 2 As shown, the device also includes several tensioning blocks 171. The fixed ends of the tensioning blocks 171 are connected to the front side plate 18 and the rear side plate 19 of the cover via screws, while the free ends act on the top of the top plate 17 of the cover. The top ends of the front side plate 18 and the rear side plate 19 are respectively provided with grooves, and a pair of grooves act on the bottom of the top plate 17 of the cover. Specifically, by loosening the screws and removing the clamping force of the free ends of the tensioning blocks 171 on the top plate 17 of the cover, the top plate 17 of the cover can be easily disassembled, which facilitates the cleaning of the inner cavity wall of the cover structure.

[0035] In one embodiment of this invention, the front side panel 18 of the cover is made of a transparent sheet. The transparent sheet allows the operator to easily observe the collection status of the collection chamber 12.

[0036] In one embodiment of this utility model, the top cover plate 17, the rear side cover plate 19, and the end cover plate 16 are all made of high-temperature resistant stainless steel. This further improves the smoothness of the collection cavity 12 and reduces the amount of splashed material 5 adhering to the inner wall of the collection cavity 12.

[0037] In one embodiment of this utility model, the top cover plate 17, the rear side cover plate 19, and the end cover plate 16 are all made of aluminum alloy, and their inner surfaces are coated with Teflon. This further improves the smoothness of the collection chamber 12 and reduces the amount of splashed material 5 adhering to the inner wall of the collection chamber 12.

[0038] In one embodiment of this utility model, such as Figure 2 As shown, it also includes several support structures, which are provided vertically along the inner wall of the hollow cover 1 and can provide vertical support for the aggregate plate 2.

[0039] In one embodiment of this utility model, such as Figure 2 As shown, the support structure includes a plurality of support plates 191 spaced apart along the length of the hollow cover 1, and the aggregate plate 2 is detachably stacked on top of the support plates 191. By utilizing the spaced-apart support plates 191, the force-bearing area with the aggregate plate 2 is reduced, thereby increasing the pressure and improving the support strength.

[0040] In one embodiment of this utility model, such as Figure 2As shown, the support structure has three layers, and each layer of the support structure includes six support plates 191. Specifically, the six support plates 191 are disposed opposite to each other on the two inner side walls of the hollow cover 1 and are fixed by screws. With the multi-layer structure design, adaptive adjustments can be made according to the actual extruder head height 4 and the factory space layout, which helps to broaden the applicability of this embodiment.

[0041] In one embodiment of this utility model, such as Figure 2 As shown, it also includes a positioning protrusion 21, which is located at one end of the collecting plate 2 near the first opening 11. The support plate 191 has a slot 1911 that matches the positioning protrusion 21. The positioning protrusion 21 and the slot 1911 are used to fix the collecting plate 2, reducing the possibility of gaps between the collecting cavity 12 and the clearance cavity 13 caused by relative movement between the collecting plate 2 and the collecting cavity 12 during operation, and preventing splashed material 5 from sliding into the cooling water tank 3.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flow guiding and collecting device for preventing splashing of a blowout preventer material from a twin screw extruder, characterized in that: The device includes a hollow housing with a first opening at one end near the extruder. A collecting plate is provided inside the hollow housing, which vertically divides the inner cavity of the hollow housing into a collecting cavity and a clearance cavity. The inner wall of the collecting cavity is provided with a smooth guide surface, which guides splashed material to the collecting plate and stores it in the collecting cavity. The bottom of the clearance cavity is provided with a second opening, which can prevent the extruded material from being extruded.

2. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 1, characterized in that: The hollow cover includes a connected end plate, a top plate, a front side plate, and a rear side plate. The end plate, the front side plate, and the rear side plate surround and form a cavity structure with openings at the ends and bottom. The top plate is detachably fixed to the top of the cavity structure.

3. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 2, characterized in that: It also includes several tensioning blocks, the fixed ends of which are connected to the front side plate and the rear side plate of the cover by screws, and the free ends of which act on the top of the top plate of the cover. The top ends of the front side plate and the rear side plate of the cover are respectively provided with grooves, and a pair of grooves act on the bottom of the top plate of the cover.

4. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 2, characterized in that: The front panel of the cover is made of transparent sheet material.

5. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 2, characterized in that: The top plate, the rear side plate, and the end plate are all made of high-temperature resistant stainless steel.

6. The flow guiding and collecting device for preventing the splash of the blowout preventer material for the twin screw extruder according to claim 2, characterized in that: The top plate, the rear side plate, and the end plate are all made of aluminum alloy and their inner surfaces are coated with Teflon.

7. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 1, characterized in that: It also includes several support structures, which are vertically arranged on the inner wall of the hollow cover and can provide vertical support for the aggregate plate.

8. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 7, characterized in that: The support structure includes a plurality of support plates arranged at intervals along the length of the hollow cover, and the aggregate plate is detachably stacked on top of the support plates.

9. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 8, characterized in that: The support structure has three layers, and each layer of the support structure includes six support plates.

10. The flow guiding and collecting device for preventing the splash of the blowout material for the twin-screw extruder according to claim 8, characterized in that: It also includes a positioning protrusion, which is located at one end of the material collecting plate near the first opening, and the support plate has a slot adapted to the positioning protrusion.

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