A melt filter chamber and pipeline connection structure

Abstract

The present application provides a melt filter chamber and pipeline connection structure, including a flange and a pipe joint. One end of the flange is connected to the bottom feed port of the filter chamber, and the other end is connected to the pipe joint. The pipe joint and the medium feed pipeline are connected by fasteners. The side where the flange and the pipe joint are connected is set as a plane, and the other side is surrounded by the hot coal chamber. The shell and the hot coal chamber are provided with windows for the flange and the pipe joint to be put in and taken out as a whole. The position where the filter chamber and the pipeline are connected is connected by fasteners, and is separated from the hot coal chamber by a certain distance, which not only solves the problem of difficult disassembly of the filter chamber and the pipeline flange connection and easy scalding during disassembly, but also reduces the material thickness at the bottom of the filter chamber feed port, saving raw materials. At the same time, the side opening of the hot coal chamber is changed to a bottom plane window, and the window structure is easy to implement blocking welding, and it is not easy to form a leakage point, which is easy to perform non-destructive testing of the welding part later. And the window area is reduced, which effectively reduces the heat dissipation area of ​​the heat medium and the unevenness of the heat distribution.

Description

Technical Field

[0001] The present application relates to the field of spinning filtration equipment technology, and in particular to a melt filter chamber and pipeline connection structure. Background Art

[0002] Melt filters are widely used in the production of thermoplastic polymers such as polyester, chemical fiber, and nylon. In order to ensure the physical and chemical properties and flow performance of the polymer, this product is used under high temperature and high pressure conditions. Its main purpose is to filter out impurities, catalyst particles, and unmelted gel particles in the polymer by the filter element installed in the filter chamber after the polymer reaction is completed, so as to facilitate the subsequent slicing and spinning of the medium. Under normal service conditions, the filter element needs to be replaced and the filter chamber needs to be cleaned after the impurities and gel particles inside the medium block the filter element at regular intervals. In order to avoid damage to the filter screen caused by solidification of the medium, the filter element needs to be quickly disassembled and cleaned at a higher temperature. The entire filter chamber is placed inside the hot coal chamber, and the heat is provided by the heat medium in the hot coal chamber during the working process. The filter chamber is not in direct contact with the heat medium.

[0003] The feed port of the existing melt filter chamber is located on the side of the shell and is connected to the external feed pipe through a flange. The flange connection requires a large space, which makes the bottom of the filter chamber thicker and wastes materials. The hot coal chamber is between the filter chamber and the inner wall of the shell, so it is necessary to open an arc window on the outer arc surface of the side of the hot coal chamber. Among them, the flange connecting the feed port of the filter chamber and the feed pipe is placed in the arc window. Since the working temperature of the heat medium chamber is relatively high, at about 260°C. Therefore, it is difficult to disassemble and clean the filter chamber and filter element. During the disassembly process, it is necessary to operate the disassembly work in the window opened on the outer wall of the hot coal chamber, which is very prone to scalding accidents. Utility Model Content

[0004] The present application provides a melt filter chamber and pipeline connection structure to solve the problems raised in the above background technology.

[0005] The present application provides a melt filter chamber and pipeline connection structure, including a flange and a pipe joint; the melt filter includes a first shell, a second shell, a filter chamber body and a first hot coal chamber; the first hot coal chamber is arranged between the first shell and the second shell, and the filter chamber body is placed in the second shell; the bottom of the first shell and the second shell are both provided with a first through hole, the first hot coal chamber is provided with a second through hole corresponding to and connected with the first through hole, and the filter chamber body is provided with a third through hole corresponding to the second through hole; the flange is a hollow structure and is provided with an inlet end and an outlet end; the outlet end of the flange passes through the first through hole, and the side of the flange facing the first shell is fixedly connected to the filter chamber body; the inlet end of the flange is connected to the pipe joint and is arranged on the side wall of the flange, and the side wall of the flange at the inlet end is a planar structure; the bottom of the first shell, the second shell and the first hot coal chamber are all provided with windows for putting in or taking out the flange and the pipe joint; the side of the pipe joint away from the inlet end of the flange is provided with a detachable structure and connected to a feed pipeline.

[0006] In a possible implementation, the melt filter chamber and pipeline connection structure further includes a first sealing gasket; a sealing groove is provided at one end of the flange facing the third through hole; and the first sealing gasket is disposed in the sealing groove.

[0007] In a possible implementation, the melt filter chamber and pipeline connection structure also includes a first fastener; the flange is provided with a plurality of through first fastening holes along its axial direction; a plurality of second fastening holes corresponding to the first fastening holes are provided in the circumference of the third through hole of the filter chamber body; one end of the first fastener passes through the first fastening hole and extends into the second fastening hole to achieve a fixed connection between the filter chamber body and the flange.

[0008] In a possible implementation, the melt filter chamber and the pipeline connection structure also includes a protrusion; the protrusion is formed outward from the first through hole at the bottom of the first shell and the second shell, the protrusion has a cavity, and the protrusion is aligned with the first through hole; the cavity of the protrusion forms a second hot coal chamber, and the second hot coal chamber is connected to the first hot coal chamber; the protrusion surrounds the circumference of the side wall of the flange.

[0009] In a possible implementation, the side wall of the protrusion is an arc-shaped surface.

[0010] In a possible implementation, the melt filter chamber and pipeline connection structure further includes a second fastener; the second fastener is disposed between the pipe joint and the feed pipeline, and is used to fix the pipe joint and the feed pipeline.

[0011] In a possible implementation, the second fastening member includes a first fastening ring and a second fastening ring; the first fastening ring and the second fastening ring are butt-jointed and detachably connected.

[0012] In a possible implementation, a second sealing gasket is provided between the pipe joint and the feed pipe.

[0013] The technical solution provided in this application has at least the following technical effects:

[0014] (1) The present application provides a melt filter chamber and pipeline connection structure. In view of the problems that the filter chamber and pipeline flange connection in the existing melt filter is difficult to disassemble and easy to cause burns during disassembly, the position for connecting the feed pipeline is set at the bottom end of the melt filter, and through holes and windows are opened at the bottom ends of the melt filter housing, the first hot coal chamber and the filter chamber body, and connected to the feed pipeline through flanges and pipe joints. This not only facilitates the disassembly of the feed pipeline and avoids burns caused by contact with the hot coal chamber, but also enables the filter chamber body and the flange to be connected and then installed or disassembled as a whole, which facilitates the cleaning of the filter chamber body.

[0015] (2) The present application sets the position for connecting the feed pipe at the bottom end of the melt filter, thereby changing the side opening of the hot coal chamber into a bottom flat window, which has the advantages of easy welding of the window structure, not easy to form leakage points, easy to perform non-destructive testing of the welding parts in the later stage, reduced window area, and effectively reducing the heat dissipation area of ​​the heat medium and the unevenness of the heat distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 An overall schematic diagram of the melt filter chamber and pipeline connection structure provided in an embodiment of the present application;

[0018] Figure 2 A partial schematic diagram of the connection structure between the filter chamber of the melt filter and the pipeline provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the melt filter chamber and pipeline connection structure provided in the embodiment of the present application in the direction of K;

[0020] Figure 4 A schematic diagram of the fastening structure of a feed pipe and a pipe joint in a melt filter chamber and a pipe connection structure provided in an embodiment of the present application.

[0021] Figure numerals: 1, flange; 2, pipe joint; 3, first shell; 4, second shell; 5, filter chamber body; 6, first hot coal chamber; 7, first fastener; 8, protrusion; 81, arc surface; 9, second fastener; 91, first fastening ring; 92, second fastening ring; 10, second sealing gasket; 11, feed pipe; 12, sealing groove; 13, first fastening hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0023] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0024] The present application provides a melt filter chamber and pipeline connection structure, such as Figures 1 to 4As shown. The melt filter filter chamber and pipeline connection structure includes a flange 1 and a pipe joint 2. Among them, the melt filter includes a first shell 3, a second shell 4, a filter chamber body 5 and a first hot coal chamber 6. The first hot coal chamber 6 is arranged between the first shell 3 and the second shell 4, and the filter chamber body 5 is placed in the second shell 4. The bottoms of the first shell 3 and the second shell 4 are both provided with a first through hole, the first hot coal chamber 6 is provided with a second through hole corresponding to and connected to the first through hole, and the filter chamber body 5 is provided with a third through hole corresponding to the second through hole. The flange 1 is a hollow structure and is provided with an inlet end and an outlet end. The outlet end of the flange 1 passes through the first through hole, and the flange 1 is fixedly connected to the filter chamber body 5 on one side facing the first shell 3. The inlet end of the flange 1 is connected to the pipe joint 2 and is arranged on the side wall of the flange 1, and the side wall of the inlet end of the flange 1 is a planar structure. The bottoms of the first shell 3, the second shell 4 and the first hot coal chamber 6 are all provided with windows for inserting or removing the flange 1 and the pipe joint 2. The side of the pipe joint 2 away from the inlet end of the flange 1 is detachably connected to the feed pipe 11 .

[0025] The feed port of the filter chamber is set at the bottom, and the pipe joint 2 is connected to the feed pipe 11, so that the connection position of the filter chamber feed port and the feed pipe 11 is outside the first shell 3 and away from the first hot coal chamber 6. When the filter element needs to be disassembled or cleaned, the connection between the pipe joint 2 and the feed pipe 11 can be quickly disassembled to avoid scalding accidents during disassembly around the first shell 3 and the first hot coal chamber 6. The windows opened at the bottom of the first shell 3, the second shell 4 and the first hot coal chamber 6 are set according to the shape and size of the flange 1 and the pipe joint 2, so that the filter chamber body 5, the flange 1 and the pipe joint 2 can be lifted as a whole, which is convenient for removing the filter element during cleaning and putting in the filter element after cleaning or replacement.

[0026] For example, the part where the pipe joint 2 is fixedly connected to the flange 1 adopts a planar structure, which can achieve good sealing performance. If welding is used, it can also meet the non-destructive testing conditions. The side wall of the inlet end of the flange 1 is a planar structure, and its specifications can be just enough to meet the pipe joint 2 in the plane, or larger than the contact area between the pipe joint 2 and the flange 1.

[0027] Furthermore, a sealing groove 12 is provided on the flange 1 at one end where the flange 1 contacts the filter chamber body 5, and a first sealing gasket is placed in the sealing groove 12. The first sealing gasket is provided to achieve sealing performance at the joint position between the flange 1 and the filter chamber body 5 to prevent leakage of the medium.

[0028] Exemplarily, the first sealing gasket should be made of a soft-seal or hard-seal temperature-resistant material to withstand the temperatures of the first hot coal chamber 6, the second hot coal chamber and the conveying medium.

[0029] Furthermore, the flange 1 is provided with a plurality of first fastening holes 13 extending therethrough in the axial direction, and correspondingly, the filter chamber body 5 is provided with a plurality of second fastening holes. The flange 1 is fixed to the bottom of the filter chamber body 5 by using the first fastener 7 to pass through the first fastening hole 13 and connect to the second fastening hole. The flange 1 is detachably connected to the filter chamber body 5, so that the filter chamber can be disassembled at the flange 1 in addition to the pipe joint 2 being detachable.

[0030] Exemplarily, the first fastening hole 13 axially opened through the flange 1 can be a countersunk hole, so that when the filter element is disassembled and replaced, but the filter chamber body 5 is taken out without disassembling the flange 1 and the pipe joint 2, the entire filter chamber body 5 can be stably placed on a plane.

[0031] Furthermore, except for the plane structure connected to the pipe joint 2, the other side walls of the flange 1 are surrounded by the second hot coal chamber, and the second hot coal chamber is connected to the first hot coal chamber 6. The height of the second hot coal chamber protruding toward the outside is intended to be higher than the axial height of the flange 1, ensuring that the side wall of the flange 1 is completely covered in the second hot coal chamber. When the medium enters the hollow structure of the pipe joint 2 and the flange 1 from the feed pipe 11, the second hot coal chamber has begun to heat up at the side wall position around the flange 1, and then the medium has been preheated in advance when entering the filter chamber body 5 from the hollow structure of the flange 1, so that the medium will not be blocked at the outlet end of the flange 1.

[0032] Exemplarily, a protrusion 8 is formed outwardly at the first through hole at the bottom of the first shell 3 and the second shell 4 of the melt filter, the protrusion 8 has a cavity, and the protrusion 8 is aligned with the first through hole, the cavity of the protrusion 8 forms a second hot coal chamber, and the second hot coal chamber is connected to the first hot coal chamber 6, and the protrusion 8 surrounds the side wall of the flange 1.

[0033] Exemplarily, the side wall of the protrusion 8 is an arcuate surface 81, which surrounds the side wall of the flange 1 and can be well matched with the flange 1. The flange 1 is heated by the first hot coal chamber 6 in the arcuate surface 81, thereby ensuring the temperature of the medium and avoiding the situation where the medium is blocked in the flange 1 due to low temperature.

[0034] Furthermore, the feed pipe 11 and the pipe joint 2 are detachably connected using a second fastener 9. To ensure that no leakage occurs at the connection position, a second sealing gasket 10 is used at the connection to ensure its sealing performance.

[0035] Exemplarily, the second fastener 9 can be a clamp or a half joint, and can include a first fastening ring 91 and a second fastening ring 92, both of which have outward bosses at both symmetrical ends, and a number of holes for connection are provided at the bosses, and the first fastening ring 91 and the second fastening ring 92 are butted, and the holes at the bosses can be screwed together to achieve a fixed connection. The second sealing gasket 10 placed between the feed pipe 11 and the pipe joint 2 connected by the second fastener 9 can be a lens gasket to increase the sealing performance. The feed pipe 11 and the pipe joint 2 are detachably connected, and not only is the disassembly position set away from the first hot coal chamber 6 to avoid burns, but the second fastener 9 is also used for easy and convenient disassembly.

[0036] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A melt filter chamber and pipeline connection structure, characterized in that: include: Flange (1) and pipe joint (2); The melt filter comprises a first shell (3), a second shell (4), a filter chamber middle body (5) and a first hot coal chamber (6); The first hot coal chamber (6) is arranged between the first shell (3) and the second shell (4), and the filter chamber middle body (5) is placed in the second shell (4); The bottoms of the first shell (3) and the second shell (4) are both provided with a first through hole, the first hot coal chamber (6) is provided with a second through hole corresponding to and connected with the first through hole, and the filter chamber middle body (5) is provided with a third through hole corresponding to the second through hole; The flange (1) is a hollow structure and is provided with an inlet end and an outlet end; The outlet end of the flange (1) passes through the first through hole, and the side of the flange (1) facing the first shell (3) is fixedly connected to the filter chamber body (5); The inlet end of the flange (1) is connected to the pipe joint (2) and is arranged on the side wall of the flange (1); the side wall of the flange (1) where the inlet end is arranged is a planar structure; The first shell (3), the second shell (4) and the bottom of the first hot coal chamber (6) are all provided with windows for inserting or removing the flange (1) and the pipe joint (2); A detachable structure is provided on one side of the pipe joint (2) away from the inlet end of the flange (1) and is connected to the feed pipe (11).

2. The melt filter chamber and pipeline connection structure according to claim 1, characterized in that: Also included is a first sealing gasket; A sealing groove (12) is provided at one end of the flange (1) facing the third through hole; The first sealing gasket is arranged in the sealing groove (12).

3. The melt filter chamber and pipeline connection structure according to claim 1, characterized in that: Also includes a first fastener (7); The flange (1) is provided with a plurality of through first fastening holes (13) along its axial direction; A plurality of second fastening holes corresponding to the first fastening holes (13) are provided in the circumferential direction of the third through hole of the filter chamber body (5); One end of the first fastener (7) passes through the first fastening hole (13) and extends into the second fastening hole to achieve fixed connection between the filter chamber body (5) and the flange (1).

4. The melt filter chamber and pipeline connection structure according to claim 1, characterized in that: Also includes a protrusion (8); The protrusion (8) is formed outwardly at the first through hole at the bottom of the first shell (3) and the second shell (4), the protrusion (8) has a cavity, and the protrusion (8) is aligned with the first through hole; The cavity of the protrusion (8) forms a second hot coal chamber, and the second hot coal chamber is connected to the first hot coal chamber (6); The protrusion (8) surrounds the side wall of the flange (1).

5. The melt filter chamber and pipeline connection structure according to claim 4, characterized in that: The side wall of the protrusion (8) is an arc-shaped surface (81).

6. The melt filter chamber and pipeline connection structure according to claim 1, characterized in that: Also includes a second fastener (9); The second fastener (9) is arranged between the pipe joint (2) and the feed pipe (11) and is used to fix the pipe joint (2) and the feed pipe (11).

7. The melt filter chamber and pipeline connection structure according to claim 6, characterized in that: The second fastening member (9) comprises a first fastening ring (91) and a second fastening ring (92); The first fastening ring (91) and the second fastening ring (92) are butt-jointed and detachably connected.

8. The melt filter chamber and pipeline connection structure according to any one of claims 1 to 7, characterized in that: A second sealing gasket (10) is provided between the pipe joint (2) and the feed pipe (11).

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