High-efficiency melt filter with backwashing function and convenient core replacement

Abstract

The utility model discloses a high-efficiency melt filter with a backwashing function and convenient core replacement, which comprises a filter heat preservation shell, a filter chamber is arranged in the filter heat preservation shell, a filter core is arranged in the filter chamber, a feeding flange is arranged on one side of the bottom end of the filter heat preservation shell, and a discharging flange is arranged on the other side of the bottom end of the filter heat preservation shell. And a discharging flange is installed on one side of the top end of the filter heat preservation shell, and an end cover is magnetically attracted to the top end of the filter chamber. The two pressure sensors are arranged to obtain pressure information of feeding and discharging, the hydraulic rod drives the sealing plate to slide towards the left side, so that the discharging hole of the sealing plate is aligned with the mounting hole, the filter element is convenient to replace, then the first three-way valve and the second three-way valve are switched, the feeding flange and the discharging flange are directly communicated, and the feeding and discharging efficiency is improved. And the melt is backflushed into the filter chamber from the discharge flange, so that the filter element is backflushed, forty to sixty percent of impurities are cleaned, and the service life of the filter is prolonged by sixty percent.

Description

Technical Field

[0001] The utility model relates to the technical field of film production, in particular to a high-efficiency melt filter which is convenient for core replacement. Background Art

[0002] In the film production process, filtration is an essential link. Its function is to remove impurities and crystal points of a certain size in the melt in order to ensure the quality of the product.

[0003] Since the melt has a certain temperature and fluidity, the filter element of the melt filter needs to be cleaned and replaced in time after long-term production. The traditional filter is a straight-through filter element, which needs to be disassembled as a whole before a new filtration system is installed. The precise installation of the flange connection position takes a long time. Long-term insulation shutdown is likely to cause yellowing and carbonization of the film material again, affecting the quality of subsequent products. Replacing the filter element is very troublesome and it is difficult to meet the needs of efficient production.

[0004] Therefore, how to provide a melt high efficiency filter with backwashing function and easy core replacement to solve the problems existing in the prior art is of great significance to its application. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a melt high-efficiency filter with backwashing function and easy core replacement, so as to solve the problem that traditional filters are very troublesome to replace filter cores and are difficult to meet the needs of efficient production.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A high-efficiency melt filter with a backwash function and convenient core replacement comprises a filter insulation shell, the filter insulation shell, a filter chamber is provided inside the filter insulation shell, a filter core is installed inside the filter chamber, a feed flange is installed on one side of the bottom end of the filter insulation shell, a discharge flange is installed on one side of the top end of the filter insulation shell, an end cover is magnetically attracted to the top end of the filter chamber, the top end of the filter core is detachably connected to the end cover, and an insulation cover is installed on the top end of the filter insulation shell.

[0008] Preferably, a second pressure sensor is installed inside the discharge flange, and a first pressure sensor is installed at the bottom end of the filter chamber.

[0009] Preferably, a connecting cavity is provided inside the end cover, one end of the connecting cavity is communicated with the filter element, the other end of the connecting cavity is communicated with the discharge flange, and the bottom end of the filter chamber is communicated with the feed flange.

[0010] Preferably, the feed flange is installed with a first three-way valve, the discharge flange is installed with a second three-way valve, and the first three-way valve and the second three-way valve are connected through a backflush pipe.

[0011] Preferably, a positioning guide post is provided on the side of the top end of the filter chamber, a positioning hole adapted to the positioning guide post is opened on the side of the end cover, and a handle is installed on the top end of the end cover.

[0012] Preferably, handles are installed on both sides of the top of the heat-insulating cover, and heating rods are installed on the sides of the filter chamber.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model can obtain the pressure information of the inlet and outlet materials by setting two pressure sensors, so as to accurately judge whether the filter element is blocked and replace the filter element in time.

[0015] 2. When the filter element needs to be replaced, the hydraulic rod drives the sealing plate to slide to the left so that the discharge hole of the sealing plate is aligned with the mounting hole. The melt inside the filter chamber can pass through the mounting hole and the discharge hole, thereby discharging the melt. After removing the insulation cover, unscrew the fixing bolts to directly remove the end cover together with the filter element, which is convenient for replacing the filter element.

[0016] 3. The utility model is provided with a heat-insulating layer and a heating rod, which can prevent the melt from solidifying when the filter element is replaced, making filter element replacement more convenient.

[0017] 4. The utility model is also provided with a backflushing pipe. When backflushing, the mounting hole is aligned with the discharge hole, and then the first three-way valve and the second three-way valve are switched so that the feed flange and the discharge flange are directly connected. The melt backflushes from the discharge flange into the interior of the filter chamber, thereby backflushing the filter element, cleaning out 40% to 60% of impurities, and increasing the service life of the filter by 60%.

[0018] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiment of the present application in conjunction with the accompanying drawings.

[0019] Based on the detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 for Figure 1 Enlarged view of point A.

[0023] Figure 3 This is a structural diagram of the utility model in the recoil state.

[0024] In the figure: 1. Filter insulation housing; 2. Filter element; 3. First pressure sensor; 4. Feed flange; 5. Heating rod; 6. Positioning guide column; 7. Insulation cover; 8. Handle; 9. Handle; 10. Second pressure sensor; 11. Discharge flange; 12. Filter chamber; 13. End cover; 14. Sealing plate mounting seat; 15. Mounting hole; 16. Slide rail; 17. Hydraulic rod; 18. Sealing plate; 19. Discharge hole; 20. First three-way valve; 21. Backflush pipe; 22. Second three-way valve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures has been omitted in the embodiments.

[0026] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0027] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0028] It should also be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprises," or any other variations thereof are intended to cover non-exclusive inclusion.

[0029] See also Figure 1-3 The present invention provides a technical solution for a melt high-efficiency filter with a backwash function and convenient core replacement: it includes a filter insulation shell 1, a filter insulation shell 1, a filter chamber 12 is arranged inside the filter insulation shell 1, a filter core 2 is installed inside the filter chamber 12, a feed flange 4 is installed on one side of the bottom end of the filter insulation shell 1, a discharge flange 11 is installed on one side of the top end of the filter insulation shell 1, the top end of the filter chamber 12 is magnetically fixedly connected with an end cover 13, the top end of the filter core 2 is detachably connected to the end cover 13, and the top end of the filter insulation shell 1 is installed with an insulation cover 7.

[0030] A mounting hole 15 is provided at the bottom end of the filter chamber 12, a hydraulic rod 17 is installed on one side of the bottom end of the filter insulation shell 1, a slide rail 16 is installed at the bottom end of the filter insulation shell 1, and the slide rail 16 is slidably connected to a sealing plate 18. A discharge hole 19 is provided on one side of the bottom end of the sealing plate 18, and the telescopic end of the hydraulic rod 17 is fixedly connected to the sealing plate 18 through the sealing plate mounting seat 14.

[0031] The hydraulic rod 17 can drive the sealing plate 18 to slide left and right through the sealing plate mounting seat 14. When the first pressure sensor 3 on the sealing plate 18 is aligned with the mounting hole 15, the first pressure sensor 3 can detect the feed pressure. When the discharge hole 19 on the sealing plate 18 is aligned with the mounting hole 15, the melt inside the filter chamber 12 can be easily discharged.

[0032] A second pressure sensor 10 is installed inside the discharge flange 11, and a first pressure sensor 3 is installed on the other side of the bottom end of the sealing plate 18. The second pressure sensor 10 and the first pressure sensor 3 are used to obtain the pressure values ​​of the inlet and outlet materials, so that it is possible to timely determine whether the filter element 2 is blocked and replace it in time.

[0033] The feed flange 4 is installed with a first three-way valve 20 , the discharge flange 11 is installed with a second three-way valve 22 , and the first three-way valve 20 and the second three-way valve 22 are connected via a backflush pipe 21 .

[0034] A mounting hole 15 is provided at the bottom end of the filter chamber 12, a hydraulic rod 17 is installed on one side of the bottom end of the filter insulation shell 1, a slide rail 16 is installed at the bottom end of the filter insulation shell 1, and the slide rail 16 is slidably connected to the sealing plate 18. The first pressure sensor 3 is installed on one side of the bottom end of the sealing plate 18, and a discharge hole 19 is provided on the other side of the bottom end of the sealing plate 18. The telescopic end of the hydraulic rod 17 is fixedly connected to the sealing plate 18 through the sealing plate mounting seat 14.

[0035] The end cap 13 is internally provided with a connecting cavity, one end of which is connected to the filter element 2, and the other end of which is connected to the discharge flange 11. The bottom end of the filter chamber 12 is connected to the feed flange 4. A heating coil is provided on the outer surface of the backflushing pipe 21 to keep the melt in the backflushing pipe 21 warm. A temperature sensor is also provided to obtain the melt temperature in real time. When backflushing, the mounting hole 15 is aligned with the discharge hole 19, and the first three-way valve 20 and the second three-way valve 22 are switched, so that the feed flange 4 and the discharge flange 11 are directly connected through the backflushing pipe 21. The melt backflushes from the discharge flange 11 into the interior of the filter chamber 12, thereby backflushing the filter element 2, removing 40 to 60 percent of impurities and increasing the service life of the filter by 60 percent.

[0036] A positioning guide column 6 is provided on the side of the top of the filter chamber 12, and a positioning hole adapted to the positioning guide column 6 is opened on the side of the end cover 13, so that the positioning between the end cover 13 and the filter chamber 12 is more accurate. A handle 8 is installed on the top of the end cover 13 to facilitate the disassembly of the end cover 13.

[0037] Handles 9 are installed on both sides of the top of the heat-insulating cover 7 for easy disassembly, and a heating rod 5 is installed on the side of the filter chamber 12.

[0038] During specific use, the melt enters the filter chamber 12 from the feed flange 4. At this time, the melt is filtered by the filter element 2, and the filtered melt is discharged through the discharge flange 11. Impurities in the melt are adsorbed in the filter element, and the first pressure sensor 3 and the second pressure sensor 10 collect the inlet and outlet pressures in real time to determine whether the filter element 2 is blocked. The hydraulic rod 17 can drive the sealing plate 18 to slide left and right through the sealing plate mounting seat 14. When the first pressure sensor 3 on the sealing plate 18 is aligned with the mounting hole 15, the first pressure sensor 3 can detect the feed pressure. When the discharge hole 19 on the sealing plate 18 is aligned with the mounting hole 15, the first pressure sensor 3 can detect the feed pressure. When the discharge hole 19 on the sealing plate 18 is aligned with the mounting hole 15, the melt inside the filter chamber 12 can be easily discharged, and the melt inside the filter chamber 12 can be discharged. Then the end cover 13 can be pulled out to remove the filter element 2. After the replacement is completed, the end cover 13 is installed with the filter element 2, and then the positioning hole on the end cover 13 is aligned with the positioning guide column 6, and the end cover 13 is magnetically attracted to the filter chamber 12 to complete the installation.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Those skilled in the art will appreciate that the present invention is susceptible to various modifications and variations. Any variation, modification, replacement, integration, or parameter change to these embodiments, which falls within the spirit and principles of the present invention and achieves the same functionality through conventional substitutions, without departing from the principles and spirit of the present invention, falls within the scope of protection of the present invention.

Claims

1. A high efficiency melt filter with backwashing function and easy core replacement, characterized by: The invention comprises a filter heat-insulating housing (1), wherein a filter chamber (12) is provided inside the filter heat-insulating housing (1), a filter element (2) is installed inside the filter chamber (12), a feed flange (4) is installed on one side of the bottom end of the filter heat-insulating housing (1), a discharge flange (11) is installed on one side of the top end of the filter heat-insulating housing (1), an end cover (13) is magnetically attracted to the top end of the filter chamber (12), the top end of the filter element (2) is detachably connected to the end cover (13), and a heat-insulating cover (7) is installed on the top end of the filter heat-insulating housing (1).

2. A high efficiency melt filter with backwashing function and convenient core replacement according to claim 1, characterized in that: The bottom end of the filter chamber (12) is provided with a mounting hole (15), a hydraulic rod (17) is installed on one side of the bottom end of the filter heat-insulating housing (1), a slide rail (16) is installed on the bottom end of the filter heat-insulating housing (1), the slide rail (16) is slidably connected to a sealing plate (18), a discharge hole (19) is provided on one side of the bottom end of the sealing plate (18), and the telescopic end of the hydraulic rod (17) is fixedly connected to the sealing plate (18) through a sealing plate mounting seat (14).

3. A high efficiency melt filter with backwashing function and convenient core replacement according to claim 2, characterized in that: A second pressure sensor (10) is installed inside the discharge flange (11), and a first pressure sensor (3) is installed on the other side of the bottom end of the sealing plate (18).

4. A high efficiency melt filter with backwashing function and convenient core replacement according to claim 3, characterized in that: A connecting cavity is provided inside the end cover (13), one end of the connecting cavity is connected to the filter element (2), the other end of the connecting cavity is connected to the discharge flange (11), and the bottom end of the filter chamber (12) is connected to the feed flange (4).

5. A high efficiency melt filter with backwashing function and convenient core replacement according to claim 4, characterized in that: The feed flange (4) is equipped with a first three-way valve (20), and the discharge flange (11) is equipped with a second three-way valve (22). The first three-way valve (20) and the second three-way valve (22) are connected via a backflush pipe (21).

6. A high efficiency melt filter with backwashing function and convenient core replacement according to claim 5, characterized in that: A positioning guide column (6) is provided on the side of the top of the filter chamber (12), a positioning hole adapted to the positioning guide column (6) is opened on the side of the end cover (13), and a handle (8) is installed on the top of the end cover (13).

7. A high efficiency melt filter with backwashing function and convenient core replacement according to claim 6, characterized in that: Handles (9) are installed on both sides of the top of the heat-insulating cover (7), and a heating rod (5) is installed on the side of the filter chamber (12).

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