Melt filter

Abstract

The utility model relates to the technical field of melt filters, in particular to a melt filter. Comprising a barrel, a filter chamber is arranged in the barrel, and a liquid inlet and a liquid outlet which are communicated with the filter chamber are formed in the barrel; the mounting plate is arranged in the cylinder body, the mounting plate is located at the top of the filtering chamber, and a connecting through hole is formed in the mounting plate; the filter element assembly comprises a filter element framework and a filter element main body, the filter element framework comprises a filter column arranged on the side wall, a flow channel cavity extending in a columnar shape is formed in the filter column and extends out of the upper end of the filter column, the filter column is sleeved with the filter element main body, and filter holes are formed in the metal sheet; the filter column comprises a mounting section positioned at the upper end, and the mounting section is mounted in the connecting through hole; and the runner plate is arranged at the upper end of the mounting plate, and a liquid outlet runner is arranged on the runner plate. And the filter element end sealing device is suitable for sealing the end part of a filter element with large wave height.

Description

Technical Field

[0001] This utility model relates to the field of melt filter technology, and specifically to a melt filter. Background Technology

[0002] Traditional melt filters, as disclosed in Chinese Utility Model Patent Publication No. CN201445844U, effectively improve the flow state of melt within the filter. They employ integrated filter cartridges for filtration. However, a drawback is that the integrated filter cartridge requires a threaded connection to the upper mounting plate, which leads to… Figure 1 As shown, a threaded connector 84 with an inlet hole 840 needs to be welded onto the filter tube 81, which is a tubular body. One of the functions of the threaded connector 84 is to seal the end face of the filter element body. The principle is that the annular groove 841 on the threaded connector 84 radially compresses and covers the end of the filter element body. The filter element body that enters the annular groove 841 cannot participate in filtration, which reduces the effective filtration height of the filter element body in the axial direction, affects the filtration efficiency, and is not suitable for sealing the end of filter elements with large wave height. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a melt filter in which the entire filter element body can participate in filtration, thereby improving filtration efficiency and making it suitable for end sealing of filter elements with high wave height.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] The cylinder has a filter chamber inside, and an inlet and an outlet connected to the filter chamber on the cylinder.

[0006] The mounting plate is installed inside the cylinder and is located at the top of the filter chamber. The mounting plate is provided with connection holes.

[0007] A filter element assembly includes a filter element frame and a filter element body. The filter element frame includes a filter column with a flow channel cavity extending from the upper end of the filter column. The lower end of the flow channel cavity is sealed. The side wall of the filter column has a liquid inlet perforation communicating with the flow channel cavity. The filter element body is made of metal sheets arranged in a ring and folded to form several radial pleats. The filter element body is fitted onto the filter column. The metal sheets have filter holes. The filter column includes an upper mounting section that is installed in a connecting perforation. The upper end of the filter element body has an annular abutment surface that axially abuts against a mounting plate to seal the upper end of the filter element body.

[0008] The flow channel plate is set on the upper part of the mounting plate. The flow channel plate is provided with a liquid outlet flow channel. The liquid inlet and liquid outlet of the liquid outlet flow channel are respectively connected to the upper opening and liquid outlet of the flow channel cavity.

[0009] Based on the above device, the method of use is as follows: the melt enters the filter chamber from the inlet, is filtered by the filter element body, enters the flow channel cavity through the inlet perforation, and finally flows out of the outlet through the outlet flow channel.

[0010] Furthermore, in one melt filter of this application, the connecting perforation and the mounting section are connected by threads.

[0011] Furthermore, in one melt filter of this application, the annular contact surface is machined into a flat surface, and the filter element frame also includes a limiting support disposed at the bottom of the filter column, with the end of the annular contact surface away from the filter element body abutting against the limiting support. In this application, by machining the end of the filter element body into an annular flat surface that abuts against the mounting plate, an axial seal is achieved on the filter element body, thereby improving filtration efficiency.

[0012] Furthermore, in one melt filter of this application, a flow guide plug is installed at the bottom of the filter column, and the flow guide plug includes an upper body section placed within the flow channel cavity. The upper body section is placed within the flow channel cavity to reduce the residence space of the melt within the flow channel cavity.

[0013] Furthermore, in this application, a melt filter includes an upper body comprising a tapered section that is narrower at the top and wider at the bottom, the tapered section coinciding with the axis of the flow channel cavity. The upper body also includes a column fixed to the upper end of the tapered section, the column and the flow channel cavity having concentric circular cross-sectional shapes. Adjusting the shape and size parameters of the upper body allows for adjustment of the volume of the flow channel cavity, thereby regulating the flow rate of the melt through the flow channel cavity. The tapered section also serves as a flow guide.

[0014] Furthermore, in a melt filter of this application, the limiting support is annular and separately disposed from the filter column. The filter element frame also includes a limiting pressure plate, which is connected to the bottom of the filter column by threaded fasteners. The limiting support axially abuts against the upper part of the limiting pressure plate. As a preferred embodiment of this application, the limiting pressure plate is used to limit the limiting support to ensure that the limiting support is in close axial contact with the filter element body, thereby axially pressing the filter element body to ensure the sealing of the end of the filter element body.

[0015] Furthermore, in a melt filter of this application, the threaded fastener is a screw that passes through the limiting pressure plate, and the upper end of the threaded fastener is connected to the bottom of the guide plug; a sealing ring is provided between the limiting pressure plate and the threaded fastener axially and / or between the limiting support and the limiting pressure plate axially.

[0016] Furthermore, in a melt filter of this application, the cylinder is provided with a receiving cavity for accommodating an installation plate, the installation plate is placed in the receiving cavity, the bottom of the receiving cavity is provided with an annular limiting step, and the bottom outer edge of the installation plate abuts against the annular limiting step; the upper outer edge of the installation plate is provided with a first conical slope, the first conical slope and the inner wall of the receiving cavity form a first annular groove, a first sealing ring is provided in the first annular groove, and the bottom outer edge of the flow channel plate is provided with a first annular protrusion, the first annular protrusion abuts against the first sealing ring.

[0017] Furthermore, in a melt filter of this application, a second conical slope is provided on the outer edge of the upper end of the flow channel plate. The second conical slope and the inner wall of the receiving cavity form a second annular groove. A second sealing ring is provided in the second annular groove. The filter also includes an upper pressure plate disposed above the flow channel plate. The bottom of the upper pressure plate is provided with a second annular protrusion, which abuts against the second sealing ring. The receiving cavity extends upward through the cylinder. A cover is installed corresponding to the upper opening of the receiving cavity. The cover is provided with an axially extending through hole. A locking screw is threaded into the through hole. The lower end of the locking screw abuts against the upper pressure plate. As a preferred embodiment of this application, the upper pressure plate, the flow channel plate, and the mounting plate are sequentially axially pressed by adjusting the locking screw. During this process, the second sealing ring and the first sealing ring are tightly pressed together through the second annular protrusion and the first annular protrusion, as well as the second conical slope and the first conical slope, to seal the gaps between the flow channel plate and the receiving cavity, and between the mounting plate and the receiving cavity.

[0018] Furthermore, in this application, a melt filter has a cover comprising a limiting ring and a top plate. The limiting ring is threaded to the upper end of the cylinder. A retaining cavity is provided between the limiting ring and the top end of the cylinder. The top plate is disposed in the retaining cavity, which is used to limit the top plate at least in the axial direction. A perforation is provided on the top plate.

[0019] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0020] This utility model provides a melt filter that abandons the traditional design of threaded connectors. The filter element body is axially sealed by abutting the mounting plate, thus eliminating the need for radial compression of the filter element body's end. This allows the entire filter element body to participate in filtration, improving filtration efficiency and making it suitable for sealing the end of filters with high wave height. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the integrated filter element connection end of a traditional melt filter;

[0022] Figure 2 This is a schematic diagram of a melt filter structure in an embodiment of this application;

[0023] Figure 3 for Figure 2A magnified view of a portion of area A in the center circle;

[0024] Figure 4 for Figure 2 A magnified view of a portion of area B in the center circle;

[0025] Figure 5 This is a planar schematic diagram of the end side of the filter element body in an embodiment of this application.

[0026] In the picture:

[0027] 1-Cylinder body; 10-Filter chamber; 101-Liquid inlet; 102-Liquid outlet; 11-Receiving chamber; 110-Annular limiting step;

[0028] 2-Mounting plate; 20-Connecting perforation; 21-First conical slope; 210-First annular groove;

[0029] 3-Filter element assembly; 31-Filter element skeleton; 310-Flow channel cavity; 311-Filter column; 3111-Mounting section; 312-Inlet perforation; 313-Limiting support; 314-Flow guide plug; 3141-Conical section; 3142-Column; 315-Limiting pressure plate; 316-Threaded fastener; 32-Filter element body; 321-Annular abutment surface;

[0030] 4-Flow channel plate; 40-Liquid outlet channel; 41-First annular protrusion; 42-Second conical slope; 420-Second annular groove;

[0031] 51 - First sealing ring; 52 - Second sealing ring;

[0032] 6-Upper pressure plate; 61-Second annular protrusion;

[0033] 7-Cover; 70-Perforation; 71-Locking screw; 72-Limiting ring; 720-Cavity; 73-Top plate;

[0034] 81-Filter tube; 84-Threaded connector; 840-Liquid inlet; 841-Annular groove. Detailed Implementation

[0035] Combination Figures 2 to 4 A melt filter is shown, comprising

[0036] The cylinder 1 has a filter chamber 10 inside and an inlet 101 and an outlet 102 communicating with the filter chamber 10.

[0037] Mounting plate 2 is installed inside the cylinder 1 and is located at the top of the filter chamber 10. The mounting plate 2 is provided with a connecting through hole 20.

[0038] Filter element assembly 3 includes a filter element frame 31 and a filter element body 32. The filter element frame 31 includes a filter column 311, and the filter column 311 has a columnar flow channel cavity 310 extending from the upper end of the filter column 311. The lower end of the flow channel cavity 310 is sealed. The side wall of the filter column 311 has a liquid inlet perforation 312 communicating with the flow channel cavity 310. The filter element body 32 is as follows. Figure 5 The filter element body 32 is mounted on a filter column 311 and is surrounded by a ring of metal sheets that are folded to form several radial folds. The metal sheets have filter holes. The filter column 311 includes an upper mounting section 3111, which is installed in a connecting through hole 20. The upper end of the filter element body 32 has an annular abutment surface 321, which abuts against the mounting plate 2 axially to seal the upper end of the filter element body 32.

[0039] A flow channel plate 4 is disposed on the upper end of the mounting plate 2. The flow channel plate 4 is provided with a liquid outlet flow channel 40. The inlet end and outlet end of the liquid outlet flow channel 40 are respectively connected to the upper opening and the outlet 102 of the flow channel cavity 310. Specifically, the opening size of the liquid inlet end of the liquid outlet flow channel 40 is consistent with the radial size of the flow channel cavity 310.

[0040] Based on the above device, its usage method is as follows: the melt enters the filter chamber 10 from the inlet 101, is filtered by the filter element body 32, and then enters the flow channel cavity 310 through the inlet perforation 312, and finally flows out of the outlet 102 through the outlet flow channel 40. In this embodiment, the inlet 101 is located at the bottom of the cylinder 1.

[0041] In this embodiment, the connecting hole 20 and the mounting section 3111 are connected by threads.

[0042] Furthermore, the upper end of the filter element body 32 is provided with an annular abutment surface 321 that abuts against the mounting plate 2. The annular abutment surface 321 is machined into a flat surface. The filter element frame 31 also includes a limiting support 313 disposed at the bottom of the filter column 311, and the end of the annular abutment surface 321 away from the filter element body 32 abuts against the limiting support 313. In this application, by machining the end of the filter element body 32 into an annular flat surface that abuts against the mounting plate 2, an axial seal is achieved on the filter element body 32 to improve filtration efficiency.

[0043] Furthermore, in this embodiment, a flow guide plug 314 is installed at the bottom of the filter column 311, and the flow guide plug 314 includes an upper body placed in the flow channel cavity 310.

[0044] Furthermore, in this embodiment, the upper main body includes a tapered segment 3141 that is narrower at the top and wider at the bottom, and the tapered segment 3141 coincides with the axis of the flow channel cavity 310.

[0045] Furthermore, in this embodiment, the upper main body also includes a column 3142 fixed to the upper end of the conical segment 3141. The cross-sectional shape of the column 3142 and the flow channel cavity 310 are concentric circles. In this embodiment, the column 3142 is a hollow shell. In other embodiments, the upper main body has only the conical segment 3141 without the column 3142, or only the column without the conical segment.

[0046] Combination Figure 4 As shown, in this embodiment, the limiting support 313 is annular and separately disposed from the filter column 311. The filter element frame 31 also includes a limiting pressure plate 315, which is connected to the bottom of the filter column 311 by a threaded fastener 316. The limiting support 313 axially abuts against the upper part of the limiting pressure plate 315. The limiting pressure plate 315 is used to limit the limiting support 313 to ensure that the limiting support 313 and the filter element body 32 are in close axial contact, thereby axially pressing the filter element body 32 to ensure the sealing of the end of the filter element body 32.

[0047] In this embodiment, the threaded fastener 316 is a screw that passes through the limiting pressure plate 315, and the upper end of the threaded fastener 316 is connected to the bottom of the guide plug 314; a sealing ring is provided between the limiting pressure plate 315 and the threaded fastener 316 in the axial direction and / or between the limiting support 313 and the limiting pressure plate 315 in the axial direction.

[0048] Combination Figure 3 As shown, in this embodiment, the cylinder 1 has a receiving cavity 11 for accommodating the mounting plate 2. The mounting plate 2 is placed inside the receiving cavity 11. The bottom of the receiving cavity 11 has an annular limiting step 110, and the bottom outer edge of the mounting plate 2 abuts against the annular limiting step 110. The upper outer edge of the mounting plate 2 has a first conical slope 21, and the first conical slope 21 and the inner wall of the receiving cavity 11 form a first annular groove 210. A first sealing ring 51 is provided in the first annular groove 210. The bottom outer edge of the flow channel plate 4 has a first annular protrusion 41, and the first annular protrusion 41 abuts against the first sealing ring 51. In this embodiment, a third sealing ring is provided between the end faces of the mounting plate 2 and the flow channel plate 4.

[0049] In this embodiment, the upper outer edge of the flow channel plate 4 is provided with a second conical slope 42, and the second conical slope 42 and the inner wall of the receiving cavity 11 form a second annular groove 420. A second sealing ring 52 is provided in the second annular groove 420. It also includes an upper pressure plate 6 disposed above the flow channel plate 4. The bottom of the upper pressure plate 6 is provided with a second annular protrusion 61, which abuts against the second sealing ring 52. The receiving cavity 11 extends upward through the cylinder 1, and a cover 7 is installed corresponding to the upper opening of the receiving cavity 11. The cover 7 is provided with an axially extending through hole 70, and a locking screw 71 is threaded into the through hole 70. The lower end of the locking screw 71 abuts against the upper pressure plate 6. By adjusting the locking screw 71, the upper pressure plate 6, the flow channel plate 4, and the mounting plate 2 are axially pressed in sequence. During this process, the second sealing ring 52 and the first sealing ring 51 are tightly pressed together through the second annular protrusion 61 and the first annular protrusion 41, as well as the second conical slope 42 and the first conical slope 21, to seal the gap between the flow channel plate 4 and the receiving cavity 11, and between the mounting plate 2 and the receiving cavity 11.

[0050] Furthermore, in this embodiment, the cover 7 includes a limiting ring 72 and a top plate 73. The limiting ring 72 is threaded to the upper end of the cylinder 1. A retaining cavity 720 is provided between the limiting ring 72 and the top end of the cylinder 1. The top plate 73 is disposed in the retaining cavity 720. The retaining cavity 720 is used to limit the top plate 73 at least in the axial direction. A through hole 70 is provided on the top plate 73.

[0051] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A melt filter characterized by: The utility model relates to a filter device, including a cylinder (1), which is provided with a filter chamber (10) inside, and is provided with a liquid inlet (101) and a liquid outlet (102) communicating with the filter chamber (10); a mounting plate (2), which is arranged in the cylinder (1) and is located at the top of the filter chamber (10), and is provided with a connecting perforation (20) on the mounting plate (2); a filter core assembly (3), which comprises a filter core framework (31) and a filter core body (32), the filter core framework (31) comprises a filter column (311), the filter column (311) is provided with a flow channel cavity (310) inside, the flow channel cavity (310) extends out of the upper end of the filter column (311), the lower end of the flow channel cavity (310) is sealingly arranged, and the sidewall of the filter column (311) is provided with a liquid inlet perforation (312) communicating with the flow channel cavity (310), the filter core body (32) is annularly arranged by a metal sheet and is folded to form a plurality of radial wrinkles, the filter core body (32) is sleeved on the filter column (311), and the metal sheet is provided with filter holes; the filter column (311) comprises a mounting section (3111) at the upper end, and the mounting section (3111) is mounted in the connecting perforation (20); the upper end of the filter core body (32) is provided with an annular abutting surface (321), and the annular abutting surface (321) is axially abutted with the mounting plate (2) to seal the upper end of the filter core body (32); a flow channel plate (4), which is arranged at the upper end of the mounting plate (2) and is provided with a liquid outlet flow channel (40), and the liquid inlet end and the liquid outlet end of the liquid outlet flow channel (40) are respectively connected with the upper end opening of the flow channel cavity (310) and the liquid outlet (102).

2. A melt filter according to claim 1, characterized in that: The connecting perforation (20) and the mounting section (3111) are connected through threads.

3. A melt filter according to claim 1, characterized in that: The annular abutting surface (321) is formed into a plane through machining, and the filter core framework (31) further comprises a limiting supporting portion (313) arranged at the bottom of the filter column (311), and the annular abutting surface (321) is abutted on the limiting supporting portion (313) away from one end of the filter core body (32).

4. A melt filter according to claim 3, wherein: The bottom of the filter column (311) is mounted with a flow guide plug (314), and the flow guide plug (314) comprises an upper section body arranged in the flow channel cavity (310).

5. A melt filter according to claim 4, wherein: The upper section body comprises a tapered section (3141) which is narrow at the upper end and wide at the lower end, and the tapered section (3141) is coaxial with the axial line of the flow channel cavity (310); the upper section body further comprises a column body (3142) fixed to the upper end of the tapered section (3141), and the column body (3142) and the flow channel cavity (310) are concentrically circular in cross section.

6. A melt filter according to claim 5, wherein: The limiting supporting portion (313) is annular and arranged separately from the filter column (311), and the filter core framework (31) further comprises a limiting pressing plate (315) connected to the bottom of the filter column (311) through a threaded fastener (316), and the limiting supporting portion (313) is axially abutted above the limiting pressing plate (315).

7. A melt filter according to claim 6, wherein: The threaded fastener (316) is a screw penetrating the limiting pressing plate (315), and the upper end of the threaded fastener (316) is connected to the bottom of the flow guide plug (314); the limiting pressing plate (315) and the threaded fastener (316) are axially sealed, and / or the limiting supporting part (313) and the limiting pressing plate (315) are axially sealed.

8. A melt filter according to claim 1, characterized in that: The barrel (1) is internally provided with a receiving cavity (11) for accommodating the mounting plate (2), the mounting plate (2) is placed in the receiving cavity (11), the bottom of the receiving cavity (11) is provided with an annular limiting step (110), and the outer edge of the bottom of the mounting plate (2) abuts against the annular limiting step (110); the outer edge of the upper end of the mounting plate (2) is provided with a first conical slope (21), the first conical slope (21) and the inner wall of the receiving cavity (11) form a first annular groove (210), the first annular groove (210) is internally provided with a first sealing ring (51), and the outer edge of the bottom of the flow channel plate (4) is provided with a first annular protrusion (41) which abuts against the first sealing ring (51).

9. A melt filter according to claim 8, wherein: The outer edge of the upper end of the flow channel plate (4) is provided with a second conical slope (42), the second conical slope (42) and the inner wall of the receiving cavity (11) form a second annular groove (420), the second annular groove (420) is internally provided with a second sealing ring (52), and the upper pressing plate (6) is arranged above the flow channel plate (4), the bottom of the upper pressing plate (6) is provided with a second annular protrusion (61) which abuts against the second sealing ring (52); the receiving cavity (11) penetrates the barrel (1) upward, the upper end of the receiving cavity (11) is provided with an opening to which the cover (7) is mounted, the cover (7) is provided with an axially extending through hole (70), the through hole (70) is threadedly connected with a locking screw (71), and the lower end of the locking screw (71) abuts against the upper pressing plate (6); the opening size of the liquid inlet end of the liquid outlet flow channel (40) is consistent with the radial size of the flow channel cavity (310).

10. A melt filter according to claim 9, wherein: The cover (7) comprises a limiting ring body (72) and a top plate (73), the limiting ring body (72) is threadedly connected to the upper end of the barrel (1), a clamping cavity (720) is arranged between the limiting ring body (72) and the top end of the barrel (1), the top plate (73) is arranged in the clamping cavity (720), the clamping cavity (720) is used for limiting the top plate (73) at least in the axial direction, and the through hole (70) penetrates the top plate (73).

Images