Filter disc capable of cutting crystals in melt
By introducing the central ring and hub frame assembly into the filter plate, the problem of insufficient spacing and sealing of the filter plate is solved, efficient melt filtration is achieved, and the purity and smoothness of the product are improved.
Patent Information
- Application Number
- CN202520781663.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2035-04-23
AI Technical Summary
During the melt filtration process, the gaps between the filter disks are easily contacted due to pressure assembly, resulting in low filtration efficiency. The filtering capacity of the single-layer filter disk is limited, and the accuracy and fluency of the melt filtration cannot be guaranteed.
A filter disk with a cut-out crystal in the melt including a central ring and a hub frame assembly is designed. Through the cooperation of the central ring and a hub frame assembly, the spacing and sealing between adjacent filter disks are ensured, and the filtration effect of the double-layer filter is achieved.
It effectively improves the spacing and sealing between filter discs, improves filtration efficiency and accuracy, and ensures the purity and smoothness of the melt.
Smart Images
Figure CN223026820U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of melt filtration, and particularly relates to a filter disc capable of cutting crystals in a melt. Background Technique
[0002] In the plastic polymer melt filtration industry, whether it is for preparing ultra-thin films, optical grade resins or high-strength fibers, the quality of the polymer seriously affects the quality of the final product. The cleanliness of the molten polymer has a significant impact on product quality, production efficiency, production safety, etc. Therefore, high-end manufacturing industries such as melt filtration have extremely high requirements for the cleanliness of polymers, especially for gel interception and crystal cutting in polymers, but it still has the following disadvantages in actual use:
[0003] During the process of melt filtration by the filter disc, it is usually installed through an installed structure. During installation, the filter discs are press-fitted together, and when working, after press-fitting, the gaps between the filter discs are likely to come into contact with each other due to press-fitting, resulting in a lower filtration efficiency and affecting the filtration efficiency of the entire filter;
[0004] Secondly, during the process of melt filtration by the filter disc, it is directly filtered through a single-layer filter screen. During the filtration process, only a single-layer filter disc is used for filtration. Due to the limited filtration capacity of the single-layer filter disc, it is impossible to ensure the accuracy and smoothness of melt filtration. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a filter disc capable of cutting crystals in a melt. By setting a central ring and a hub frame assembly, the problem that the distance between two adjacent filter discs cannot be well guaranteed during melt filtration by the filter disc, and the accuracy and smoothness of melt filtration cannot be guaranteed is solved.
[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0007] The utility model relates to a filter disc capable of removing crystals in a melt, which comprises a central ring and a hub frame assembly. Connecting rings are fixed to the top end and the bottom end of the central ring. Filter discs I and filter discs II are fixed to the circumferences of the two connecting rings. The filter discs I and the filter discs II are attached to each other. A hub frame assembly is fixed to the top end of the upper connecting ring. The hub frame assembly comprises a fixed ring, an activity groove and a sealing ring. The fixed ring is fixed to the top end of the upper connecting ring. An activity groove is formed in the top end of the fixed ring. The activity groove is arranged in a ring shape and a sealing ring is movably connected in the activity groove. During operation, the melt filtered by the filter discs I and the filter discs II is output to an output pipeline in a filter through a communication hole in the central ring. When the hub frame assembly works, it separates between two adjacent filter discs, maintains a gap between two adjacent filter discs through the sealing ring, and seals the gap between two adjacent central rings.
[0008] Further, communication holes are formed in the central ring in an annular array. The communication holes penetrate through the central ring. An inner framework is fixed to the middle of the circumference of the central ring. The central ring supports two corresponding support discs above and below through the outer inner framework.
[0009] Further, support discs are fixed to the top end and the bottom end of the inner framework. The filter discs I are located on the side of the support discs away from the inner framework. The filter discs II on the circumference of the same connecting ring are arranged on the side of the filter discs I away from the support discs. The filter discs I are arranged between the support discs and the filter discs II. The two support discs are respectively fixed to the circumferences of the two connecting rings. Through holes are uniformly and vertically formed in each support disc. The support discs cooperate with the inner framework to install the filter discs I and the filter discs II, and the melt to be filtered passes through the through holes.
[0010] Further, the hub frame assembly further comprises a welding ring and connecting rods. Connecting rods are fixed to the circumference of the fixed ring in an annular array. The ends of all the connecting rods away from the fixed ring are jointly fixed to the welding ring. The hub frame assembly is attached through the welding ring and the connecting rods to support the shape of the whole filter disc and reduce the bending deformation of the whole filter disc.
[0011] Further, the connecting rods are attached to the top ends of the upper filter discs II. The outer diameter of the fixed ring is equal to the inner diameter of the filter discs II to cooperate with the supporting effect of the connecting rods on the filter disc.
[0012] Further, an outer ring is jointly fixed to the circumferences of the inner framework, the support discs, the filter discs I and the filter discs II. The welding ring is fixed to the top end of the outer ring. The inner framework, the support discs, the filter discs I and the filter discs II are welded into a whole through the outer ring.
[0013] The utility model has the following beneficial effects:
[0014] The utility model solves the problem that the distance between two adjacent filter disks cannot be well guaranteed during the melt filtration by setting a central ring and a hub frame assembly. After stacking the filter disks continuously until all the filter disks are stacked and installed, the inner pressing structure in the filter presses downward. Between two adjacent filter disks, the sealing ring in the movable groove of the fixed ring included in the hub frame assembly of the lower filter disk abuts against the bottom end of the connecting ring at the bottom end of the central ring included in the upper filter disk, so that the gap between the central rings of two adjacent filter disks is closed. And through the arrangement that the sealing ring protrudes from the fixed ring, a good gap is maintained between two adjacent filter disks, preventing the filter slices II on the two filter disks from contacting each other and ensuring the filtration efficiency.
[0015] The utility model solves the problem that the filter disk cannot guarantee the accuracy and smoothness of melt filtration by setting a central ring. After stacking and pressing and installing, when the melt enters the filtering equipment, it is conveyed to the filter slice II. After preliminary filtration by the filter slice II, it is further filtered by the filter slice I, then conveyed between the two filter slices I, passes through the through holes on the two support disks, and is conveyed to the inner skeleton. Then it is conveyed to the communication holes in the central ring through the inner skeleton, and then conveyed to the output pipeline inside the central ring (as Figure 4 shown), completing the removal of crystals in the melt, increasing the purity of the melt. Through the double-layer filtration setting, the blockage of the higher-precision filter slice I by impurities in the melt is reduced. Description of the Drawings
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0017] Figure 1 It is a three-dimensional structure diagram of the partially cut-open structure of Embodiment 1 and Embodiment 2;
[0018] Figure 2 For Figure 1 the enlarged view of the structure at A in
[0019] Figure 3 It is a three-dimensional structure diagram of the hub frame assembly;
[0020] Figure 4 It is a state diagram of a filter disk capable of removing crystals in the melt installed outside the conveying pipeline;
[0021] Figure 5 It is a three-dimensional structure diagram of Embodiment 3.
[0022] Reference Signs:
[0023] 1. Central ring; 101. Connecting hole; 102. Connecting ring; 103. Inner skeleton; 104. Support disk; 1041. Through hole; 105. Filter disc one; 106. Filter disc two; 107. Outer ring; 2. Hub frame assembly; 201. Welding ring; 202. Connecting rod; 203. Fixed ring; 204. Movable groove; 205. Sealing ring. Detailed implementation mode
[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. Specific embodiment one
[0025] Please refer to Figure 1-2 , the present invention is a filter disc capable of removing crystals in the melt, including a central ring 1 and a hub frame assembly 2. Connecting rings 102 are fixed at both the top and bottom ends of the central ring 1. When the central ring 1 works, the connecting ring 102 is connected thereto. When working through the connecting ring 102, the filter disc one 105 and the filter disc two 106 are fixed thereto. Filter discs one 105 and filter discs two 106 are fixed on the circumferences of both connecting rings 102, and the filter disc one 105 and the filter disc two 106 are in mutual contact. The filter disc one 105 is made by composite sintering of metal powder and metal mesh, and the filter disc two 106 is made of metal mesh and metal fiber, and the material is nickel-based alloy, stainless steel, nickel material, etc. When working, after the melt is filtered by the filter disc two 106, it is filtered and conveyed to the filter disc one 105 for further filtration, and then conveyed between the two filter discs one 105. A hub frame assembly 2 is fixed at the top end of the upper connecting ring 102. The position between adjacent two filter discs is restricted by the hub frame assembly 2. The hub frame assembly 2 includes a fixed ring 203, a movable groove 204 and a sealing ring 205. The fixed ring 203 is fixed at the top end of the upper connecting ring 102. An annular movable groove 204 is opened at the top end of the fixed ring 203, and a sealing ring 205 is movably connected in the movable groove 204. By the sealing ring 205 abutting against the connecting ring 102 at the bottom end of the upper central ring 1, the gap between the two central rings 1 is closed.
[0026] Specifically, connecting holes 101 are arranged in an annular array inside the central ring 1, and the connecting holes 101 penetrate through the central ring 1. An inner skeleton 103 is fixed in the middle of the circumference of the central ring 1. The central ring 1 conveys the filtered melt into the central ring 1 through the connecting holes 101 and outputs it through an output pipeline (such as Figure 4As shown in the figure, it is supported by the inner skeleton 103 to prevent the first filter 105 and the second filter 106 from collapsing.
[0027] Furthermore, support discs 104 are fixed at the top and bottom of the inner skeleton 103. The first filter 105 is located on the side of the support disc 104 away from the inner skeleton 103. The second filters 106 on the periphery of the same connecting ring 102 are arranged on the side of the first filter 105 away from the support disc 104. The first filter 105 is arranged between the support disc 104 and the second filters 106. The two support discs 104 are respectively fixed on the peripheries of the two connecting rings 102. Through holes 1041 are evenly and vertically formed through each support disc 104. The through holes 1041 on the support disc 104 allow the filtered melt to pass through to the inner skeleton 103 and be transported to the communication holes 101 on the central ring 1.
[0028] The operation process of this embodiment is as follows: During work, after being stacked and pressed for installation, when the melt enters the filtering device, it is transported to the second filter 106. After preliminary filtration by the second filter 106, it is further filtered by the first filter 105, then transported between the two first filters 105, passes through the through holes 1041 on the two support discs 104, and is transported to the inner skeleton 103. Then it is transported to the communication holes 101 inside the central ring 1 through the inner skeleton 103 and is transported to the output pipeline inside the central ring 1 through the communication holes 101 (as Figure 4 shown), completing the removal of crystals in the melt and increasing the purity of the melt. Specific Embodiment Two
[0029] Please refer to Figure 1-4 , on the basis of Specific Embodiment One, the hub frame assembly 2 further includes a welding ring 201 and a connecting rod 202. Connecting rods 202 are fixedly arranged in a circumferential array on the periphery of the fixed ring 203. The ends of all the connecting rods 202 away from the fixed ring 203 are commonly fixed with a welding ring 201. When the hub frame assembly 2 works, it is welded to the outer ring 107 through the welding ring 201, connecting the connecting rods 202 to the outer ring 107 and connecting the connecting rods 202 to the fixed ring 203. When working, the connecting rods 202 can be attached to the top surface of the second filter 106.
[0030] Specifically, the connecting rod 202 is attached to the top of the second filter 106 located above. The outer diameter of the fixed ring 203 is equal to the inner diameter of the second filter 106, enabling two adjacent filter discs to be stacked and installed together.
[0031] Furthermore, an outer ring 107 is fixedly provided on the peripheries of the inner framework 103, the support disk 104, the first filter 105 and the second filter 106 together. The welding ring 201 is fixed to the top end of the outer ring 107. When working through the outer ring 107, the edges of the inner framework 103, the support disk 104, the first filter 105 and the second filter 106 are connected together, so that the gaps between the edges of the inner framework 103, the support disk 104, the first filter 105 and the second filter 106 are sealed.
[0032] The operation process of this embodiment is as follows: During work, when installing the filter disk, the whole filter disk is placed into the filter and supported by the support structure. Under the limiting effect of the limiting structure, all the filter disks are stacked on each other, and the central ring 1 is arranged outside the conveying pipeline in the filter. Then, another filter disk is placed into the filter, and one end of the fixing hub assembly 2 is arranged upward (as Figure 4 shown), and they are continuously stacked until all the filter disks are stacked and installed. Then, through the press-fitting structure in the filter, it is pressed downward. Between two adjacent filter disks, the sealing ring 205 in the movable groove 204 on the fixing ring 203 included in the hub assembly 2 of the lower filter disk abuts against the bottom end of the connecting ring 102 at the bottom end of the central ring 1 of the upper filter disk, so that the gap between the central rings 1 of two adjacent filter disks is sealed. And through the arrangement that the sealing ring 205 protrudes from the fixing ring 203, a good gap is maintained between two adjacent filter disks. After the installation is completed, the filtration of the melt can be carried out. Specific Embodiment Three
[0033] Please refer to Figure 1 、 5 Based on Specific Embodiment One and Specific Embodiment Two, the difference is that the whole filter disk does not need to adopt the outer ring 107 structure. On this basis, the edges of the two first filters 105 and the two second filters 106 on the outer side of the same central ring 1 are pressed against each other, and finally the edges of the inner framework 103, the support disk 104, the first filter 105 and the second filter 106 are welded and connected. And the welding ring 201 of the hub assembly 2 is welded and fixed to the edge where the inner framework 103, the support disk 104, the first filter 105 and the second filter 106 are welded together, so as to connect the outer edges of the welding ring 201, the inner framework 103, the support disk 104, the first filter 105 and the second filter 106 together.
[0034] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0035] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A filter disc capable of removing crystals from a melt, comprising a center ring (1) and a hub assembly (2), characterized in that: A connecting ring (102) is fixed to the top and bottom of the center ring (1), and a filter plate 1 (105) and a filter plate 2 (106) are fixed to the circumference of the two connecting rings (102), and the filter plate 1 (105) and the filter plate 2 (106) are fitted to each other. A hub frame assembly (2) is fixed to the top of the connecting ring (102) located above, and the hub frame assembly (2) comprises a fixing ring (203), a movable groove (204) and a sealing ring (205). The fixing ring (203) is fixed to the top of the connecting ring (102) located above, and a movable groove (204) is provided at the top of the fixing ring (203). The movable groove (204) is arranged in an annular shape, and a sealing ring (205) is movably connected in the movable groove (204).
2. A filter disc capable of removing crystals from a melt according to claim 1, characterized in that: The center ring (1) is provided with communicating holes (101) in a circular array, the communicating holes (101) passing through the center ring (1), and an inner frame (103) is fixed in the middle of the circumference of the center ring (1).
3. A filter disc capable of removing crystals from a melt according to claim 2, characterized in that: Support plates (104) are fixed to the top and bottom ends of the inner frame (103); filter plate 1 (105) is located on a side of the support plate (104) away from the inner frame (103); filter plate 2 (106) on the peripheral side of the same connecting ring (102) is arranged on a side of filter plate 1 (105) away from the support plate (104); filter plate 1 (105) is arranged between the support plate (104) and filter plate 2 (106); the two support plates (104) are respectively fixed to the peripheral sides of the two connecting rings (102); and each support plate (104) is evenly and vertically provided with through holes (1041).
4. A filter disc capable of removing crystals from a melt according to claim 3, characterized in that: The hub frame assembly (2) further comprises a welding ring (201) and connecting rods (202); the connecting rods (202) are fixed in an annular array on the circumference of the fixing ring (203); and the ends of all the connecting rods (202) away from the fixing ring (203) are fixed with a welding ring (201) in common.
5. A filter disc capable of removing crystals from a melt according to claim 4, characterized in that: The connecting rod (202) is fitted onto the top of the second filter disc (106) located above, and the outer diameter of the fixing ring (203) is equal to the inner diameter of the second filter disc (106).
6. A filter disc capable of removing crystals from a melt according to claim 5, characterized in that: An outer ring (107) is fixed to the circumference of the inner skeleton (103), the support plate (104), the first filter disc (105) and the second filter disc (106), and the welding ring (201) is fixed to the top of the outer ring (107).