Filter screen device for double-screw extruder

Abstract

The utility model provides a filter screen device for a double-screw extruder, which comprises a machine head, a turntable rotationally arranged on the inner wall of the machine head, a pair of mounting frames inserted into the inner wall of the turntable, a fixing component arranged inside the turntable and used for positioning the mounting frames, and filter plates mounted on the inner walls of the mounting frames, the fixing assembly comprises two springs arranged on the inner wall of the rotating disc, one ends of the springs are fixedly connected with pulling plates, one sides of the pulling plates are fixedly connected with inserting rods, inserting holes used in cooperation with the inserting rods are formed in the two sides of the mounting frame, the outer sides of the pulling plates are slidably connected with the inner wall of the rotating disc, a box body is arranged at the top of the machine head, and one side of the box body communicates with a plurality of nozzles. The filter screen device for the double-screw extruder provided by the utility model solves the problems that the production efficiency of the extruder is influenced and the use is relatively inconvenient due to the fact that the filter screen is still required to be replaced when the existing device is used for detaching the filter screen, although the detaching efficiency is improved compared with the traditional filter screen fixing mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to extruder technical field especially uses filter screen device of double screw extruder. BACKGROUND

[0002] The double screw extruder is developed on the basis of the single screw extruder, and has been widely applied to the forming processing of extruded products due to good feeding performance, mixing plasticizing performance, exhaust performance and extrusion stability. After the material is extruded through the extruder, it needs to be filtered through the filter screen. In order to resist the force generated by the melt flow, the filter screen group is lined with a circular steel disc with a plurality of holes, which is called a perforated plate or a honeycomb plate. However, the filter screen is easily clogged by the material, so the staff needs to frequently disassemble and maintain the filter screen. However, the traditional filter screen disassembly and maintenance efficiency is low, resulting in poor equipment production efficiency.

[0003] In the patent literature with the publication number CN 212498890 U, a kind of double screw extruder's filter screen convenient to replace is disclosed, including discharge pipe, fixed block, clamping groove and movable slot, the fixed block is installed on the outer wall of discharge pipe side, the discharge pipe side outer wall is provided with connecting pipe, the fixed block and the connecting pipe opposite side outer wall are opened with the limit slot of circular array distribution, the fixed block is opened with movable slot on the outer wall of side away from limit slot, and movable slot is communicated with limit slot, the movable slot is provided with limit rod inside, the limit rod side outer wall is installed with support block, the connecting pipe inner wall side is provided with filter screen body, the connecting pipe side outer wall is installed with the limit block of circular array distribution, and limit block is arranged in the limit slot inside.In the process of realizing the technical scheme, the inventor finds that there are at least the following problems in the prior art:

[0004] The above-mentioned device improves the disassembly efficiency compared with the traditional filter screen fixing mode when disassembling the filter screen, but still has the problem of needing to stop the machine and replace the screen, which affects the production efficiency of the extruder and is inconvenient to use.

[0005] It should be noted that the information disclosed in this background section is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. Therefore, the above content belongs to the technical cognition of the inventor and does not necessarily constitute prior art. CONTENT OF THE UTILITY MODEL

[0006] The purpose of this part is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the present utility model.

[0007] In view of the above and / or problems existing in the prior art, the utility model provides.

[0008] To solve the above technical problems, the utility model provides the following technical scheme: Filter screen device for double screw extruder, including head, the inner wall of head is rotationally arranged with carousel, a pair of installation frame is inserted in the inner wall of carousel, the inside of carousel is provided with fixed assembly for positioning installation frame, the inner wall of installation frame is installed with filter plate.

[0009] Preferably, the fixed assembly includes two springs provided on the inner wall of the carousel, one end of the spring is fixedly connected with a pull plate, one side of the pull plate is fixedly connected with a plug rod, both sides of the installation frame are provided with plug holes matched with the plug rod, and the outer side of the pull plate is slidably connected with the inner wall of the carousel.

[0010] Preferably, the top of the head is provided with a box body, and a plurality of nozzles are communicated with one side of the box body.

[0011] Preferably, the outer side of the pull plate is fixedly connected with a sliding block, and the number of the sliding blocks is two.

[0012] Preferably, a sliding groove is formed in the inner wall of the carousel, and the outer side of the sliding block is slidably connected with the inner wall of the sliding groove.

[0013] Preferably, a gas inlet pipe is communicated with one side of the box body, and the gas inlet pipe is communicated with the exhaust end of an externally arranged air pump.

[0014] Preferably, a positioning bolt is screwed on one side of the head, and one end of the positioning bolt abuts against the outer side of the carousel.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The filter screen device for double screw extruder is provided with two filter plates, when one of the filter plates needs to be cleaned, the carousel is rotated to exchange the positions of the two filter plates, so that the other new filter plate filters the discharge end of the head, and then the fixed assembly is used to release the fixation of the filter plate, so that the filter plate can be quickly disassembled and cleaned, and the two filter plates can work in turn, so that the machine does not need to be stopped for screen replacement, and continuous production can be carried out, thereby improving the production efficiency.

[0017] Other features and advantages of the present application will be further described in the following specification, and some will become apparent from the specification, or will be understood through practice of the present application. The objects and other advantages of the present application will be realized and achieved by the structure particularly pointed out in the written specification and the accompanying drawings.

[0018] The technical scheme of the present application will be further described in detail below with the help of the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the premise of not deviating from the technical concepts of the present application.

[0020] Figure 1 The structural schematic diagram of a preferred embodiment of the filter screen device for the double-screw extruder provided by the present application is shown in the figure.

[0021] Figure 2 The structural schematic diagram of the turntable shown in the present application is shown in the figure.

[0022] Figure 3 The enlarged structural schematic diagram of the position A shown in the present application is shown in the figure.

[0023] Figure 4 The structural schematic diagram of the box body shown in the present application is shown in the figure.

[0024] The figure is marked as: 1, head; 2, turntable; 3, mounting frame; 4, fixing assembly; 41, spring; 42, pull plate; 43, insertion rod; 44, insertion hole; 5, filter plate; 6, box body; 7, nozzle; 8, sliding block; 9, sliding groove; 10, air inlet pipe; 11, positioning bolt. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without deviating from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0027] Secondly, the present application is described in detail in combination with the schematic diagram, in the detailed description of the embodiments of the present application, in order to facilitate the description, the cross-sectional view of the device structure will be partially enlarged without general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present application here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0028] Thirdly, the "one embodiment" or "embodiment" referred to herein means a specific feature, structure, or characteristic that can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent or alternative to other embodiments.

[0029] Referring to Figures 1-4 , the filter screen device for a double-screw extruder comprises a head 1, a rotating disc 2 is arranged on the inner wall of the head 1, a pair of mounting frames 3 are arranged in the rotating disc 2, a fixing assembly 4 for positioning the mounting frames 3 is arranged in the rotating disc 2, and filter plates 5 are mounted on the inner wall of the mounting frames 3.

[0030] The head 1 is mounted at the discharging end of the double-screw extruder, the outer side of the rotating disc 2 is rotatably connected with the inner wall of the head 1, the filter plates 5 are mounted on the inner wall of the mounting frames 3, and the two mounting frames 3 are mounted in the rotating disc 2 through the fixing assembly 4. When one of the filter plates 5 needs to be cleaned, the rotating disc 2 is rotated to exchange the positions of the two filter plates 5, so that the other new filter plate 5 filters the discharging end of the head 1. Then, the fixing assembly 4 is used to release the fixation of the filter plates 5, so that the filter plates 5 can be quickly disassembled and cleaned. The two filter plates 5 work in turns, so that the machine does not need to be stopped for screen replacement, and continuous production can be realized, thereby improving the production efficiency.

[0031] In the specific implementation process, as shown in Figure 3 , the fixing assembly 4 comprises two springs 41 arranged on the inner wall of the rotating disc 2, one end of each spring 41 is fixedly connected with a pull plate 42, one side of the pull plate 42 is fixedly connected with a plug rod 43, and the two sides of the mounting frame 3 are both provided with plug holes 44 matched with the plug rods 43, and the outer side of the pull plate 42 is slidably connected with the inner wall of the rotating disc 2.

[0032] After the mounting frame 3 is mounted on the inner wall of the rotating disc 2, the plug rod 43 on one side of the pull plate 42 is inserted into the plug hole 44 on one side of the mounting frame 3, so that the mounting frame 3 can be quickly positioned. The plug rod 43 is separated from the plug hole 44 by pushing the pull plate 42, so that the positioning of the mounting frame 3 is quickly released. The pull plate 42 has elasticity due to the spring 41, and the plug rod 43 is automatically inserted into the plug hole 44 after the pull plate 42 is loosened.

[0033] The head 1 is provided with a box body 6 on the top, and a plurality of nozzles 7 are communicated with one side of the box body 6. The box body 6 is arranged on the top of the head 1, and the air is blown out through the plurality of nozzles 7 on one side of the box body 6. The blown gas can clean the impurities in the filter plate 5.

[0034] The outer side of the pull plate 42 is fixedly connected with a sliding block 8, and the number of the sliding blocks 8 is two.

[0035] The inner wall of the rotating disc 2 is provided with a sliding groove 9, and the outer side of the sliding block 8 is slidably connected with the inner wall of the sliding groove 9.

[0036] When the pull plate 42 moves, the top and bottom sliders 8 slide in the sliding grooves 9, guiding and limiting the pull plate 42, improving the stability of the insertion rod 43 when moving, and centering the insertion rod 43 and the insertion hole 44.

[0037] The box body 6 is connected with an air inlet pipe 10 on one side, the air inlet pipe 10 is connected with the exhaust end of an external air pump, and the air inlet pipe 10 is connected with the external air pump, so as to supply air to the inside of the box body 6.

[0038] The head 1 is screwed with a positioning bolt 11 on one side, one end of the positioning bolt 11 abuts against the outside of the rotating disc 2, when the rotating disc 2 rotates to exchange the positions of the two filter plates 5, the positioning bolt 11 can be tightened to position the rotating disc 2, so as to fix the positions of the filter plates 5.

[0039] In use, the head 1 is installed at the discharge end of a double-screw extruder, the outside of the rotating disc 2 is rotatably connected with the inner wall of the head 1, the filter plate 5 is installed on the inner wall of the mounting frame 3, after the mounting frame 3 is installed on the inner wall of the rotating disc 2, the insertion rod 43 on one side of the pull plate 42 is inserted into the insertion hole 44 on one side of the mounting frame 3, so as to quickly position the mounting frame 3, the insertion rod 43 is separated from the insertion hole 44 by pushing the pull plate 42, so as to quickly release the positioning of the mounting frame 3, the pull plate 42 has elasticity by the spring 41, the insertion rod 43 is automatically inserted into the inside of the insertion hole 44 after the pull plate 42 is loosened, by arranging two filter plates 5, when one of the filter plates 5 needs to be cleaned, the rotating disc 2 is rotated to exchange the positions of the two filter plates 5, so that the other new filter plate 5 filters the discharge end of the head 1, and then the filter plate 5 that needs to be cleaned is disassembled, the filter plate 5 is quickly disassembled for cleaning, the two filter plates 5 work in turn, so that the machine does not need to be stopped for screen replacement, and continuous production can be carried out, improving the production efficiency.

[0040] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, locations, and the like). For example, the elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be modified or changed. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the subject matter described herein. Any "open / closed" claims are intended to encompass the structure described herein, and not just the structure equivalent, but also the equivalent structure. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to particular embodiments described, but extends to any inventive subject matter within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of an actual implementation can be described (i.e., those not pertinent to the best mode for carrying out the present inventive subject matter, or those not necessary for enabling one to practice the present inventive subject matter).

[0042] It is to be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to modifications of the software, hardware, and firmware of the present inventive subject matter for the reason that such modifications do not cause a departure from the spirit and essence of the present inventive subject matter. Changes can be made by those skilled in the art, which are or can be within the scope of the inventive subject matter and without departing from the spirit of the inventive subject matter as described herein.

[0043] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, which should be covered in the scope of claims of the present application.

Claims

1. A filter screen device for a twin-screw extruder, characterized by, Including machine head (1), the inner wall of machine head (1) is rotationally provided with rotating disc (2), a pair of installation frame (3) is inserted in the inner wall of rotating disc (2), the inside of rotating disc (2) is provided with fixing assembly (4) for positioning installation frame (3), the inner wall of installation frame (3) is provided with filter plate (5).

2. The filter screen device for a twin-screw extruder according to claim 1, characterized by The fixing assembly (4) includes two springs (41) provided on the inner wall of the rotating disc (2), one end of the spring (41) is fixedly connected with the pull plate (42), one side of the pull plate (42) is fixedly connected with the insertion rod (43), both sides of the installation frame (3) are provided with the insertion hole (44) matched with the insertion rod (43), and the outer side of the pull plate (42) is slidably connected with the inner wall of the rotating disc (2).

3. The filter screen device for a twin-screw extruder according to claim 1, characterized by The top of the machine head (1) is provided with a box body (6), and a plurality of nozzles (7) are communicated with one side of the box body (6).

4. The filter screen device for a twin-screw extruder according to claim 2, characterized by The outer side of the pull plate (42) is fixedly connected with the sliding block (8), and the number of the sliding block (8) is two.

5. The filter screen device for a twin-screw extruder according to claim 4, characterized by The inner wall of the rotating disc (2) is provided with a sliding groove (9), and the outer side of the sliding block (8) is slidably connected with the inner wall of the sliding groove (9).

6. The filter screen device for a twin-screw extruder according to claim 3, characterized by The side of the box body (6) is communicated with the air inlet pipe (10), and the air inlet pipe (10) is communicated with the exhaust end of the external air pump.

7. The filter screen device for a twin-screw extruder according to claim 1, characterized by One side of the machine head (1) is screwed with a positioning bolt (11), and one end of the positioning bolt (11) abuts against the outer side of the rotating disc (2).

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