High-branch-chain cyclodextrine filtering device

Abstract

The utility model belongs to the technical field of separation equipment, and particularly relates to a high-branch-chain cyclodextrine filtering device which comprises a base and a barrel, the barrel detachably covers the base through a lifting ring nut, the barrel and the base jointly define a filtering cavity, a plurality of filtering units are sequentially arranged in the filtering cavity in a stacked mode from top to bottom, and the filtering units are arranged in the filtering cavity. Each filter unit comprises a plate-type supporting frame, a filter membrane and a screen plate, the plate-type supporting frames and the screen plates are alternately stacked in the vertical direction, and the filter membranes are clamped between the plate-type supporting frames and the screen plates; a first central flow channel is formed in the center of the plate type supporting frame, and a second central flow channel is formed in the center of the screen plate; the first center flow channels and the second center flow channels are sequentially and alternately communicated to jointly form a gradually-shrunk liquid channel, the inner diameter of the gradually-shrunk liquid channel is gradually reduced from top to bottom, and a cleaning opening is detachably formed in the net plate. The device can realize high-efficiency filtration of high-viscosity feed liquid.

Description

Technical Field

[0001] This utility model belongs to the field of separation equipment technology, specifically relating to a highly branched cyclic dextrin filtration device. Background Technology

[0002] The production of highly branched cyclodextrins typically involves enzymatic synthesis and multi-stage purification processes, resulting in a product solution characterized by high viscosity and high heat sensitivity. Currently, existing technologies mainly employ stacked filters for clarification and purification of the solution. However, these traditional devices have the following significant shortcomings when processing high-viscosity, heat-sensitive solutions: First, the cross-sectional area of ​​the flow channels in each layer of a traditional stacked filter is uniform. As the high-viscosity material flows downwards, pressure loss along the flow path easily leads to uneven flow velocity distribution and unbalanced filter cake formation, thus reducing overall filtration efficiency. Second, existing equipment requires complete disassembly of the screen plates for cleaning and maintenance, a time-consuming and labor-intensive process that cannot meet the requirements of continuous production for rapid batch changeover.

[0003] Chinese patent CN212818413U discloses a stacked filter, including a base and a rubber layer. The base has casters fixed at its four corners, and a mounting seat is positioned at the center of its upper end. From the outside to the inside, the bottom of the mounting seat has a lower movable bolt, a sealing layer, and a limiting slide rail. An upper movable bolt is connected to the top of one side of the limiting slide rail, and a limiting slider is connected to the other side. A filter screen is fixed to the other side of the limiting slider. This stacked filter has water inlet holes evenly distributed on the outer side of the filter screen. The staggered distribution of the water inlet holes between the filter screens increases the speed at which liquid enters the filter screen, thereby improving filtration efficiency. However, this patent cannot overcome the pressure loss during the flow of high-viscosity liquids, and the maintenance and cleaning operations are cumbersome, failing to meet the requirements of continuous production. Utility Model Content

[0004] The purpose of this invention is to provide a highly branched cyclic dextrin filtration device that can achieve efficient filtration of high-viscosity liquids, improve filtration efficiency and stability, and simplify the cleaning process to meet the needs of continuous production.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A highly branched annular dextrin filtration device includes a base and a cylinder. The cylinder is detachably fitted onto the base via a lifting eye nut. The cylinder and the base together form a filtration chamber. Inside the filtration chamber, several filtration units are stacked sequentially from top to bottom. Each filtration unit includes a plate-type support frame, a filter membrane, and a screen. The plate-type support frame and the screen are alternately stacked vertically, with the filter membrane sandwiched between the plate-type support frame and the screen. A first central flow channel is located at the center of the plate-type support frame, and a second central flow channel is located at the center of the screen. The first and second central flow channels are alternately connected to form a gradually narrowing liquid channel. The inner diameter of the gradually narrowing liquid channel gradually decreases from top to bottom. A cleaning port is detachably provided on the screen.

[0007] Furthermore, the side of the plate support frame is provided with several liquid inlets.

[0008] Furthermore, the mesh plate is provided with several liquid outlets, which are installed through the side wall of the second central flow channel.

[0009] Furthermore, several load-bearing rods are vertically installed inside the filter chamber, and locking fasteners are installed at the top of the load-bearing rods.

[0010] Furthermore, the locking fastener includes a clamping nut screwed onto the top of the load-bearing rod, and a pressure plate is provided below the clamping nut, which is sleeved on the load-bearing rod.

[0011] Furthermore, a snap-fit ​​part is provided at the bottom of the load-bearing rod, and a fixing block is provided on the base to cooperate with the snap-fit ​​part. The load-bearing rod is snapped and fixed in the fixing block through the snap-fit ​​part.

[0012] Furthermore, several load-bearing hangers are arranged around the edge of the filter unit, with the number of hangers being 6-8.

[0013] Furthermore, the mesh plate is equipped with a tubular interface to match the cleaning port, and the cleaning port is threaded onto the tubular interface.

[0014] Furthermore, a sealing ring is provided between the base and the cylinder.

[0015] Furthermore, the base, cylinder, plate support frame, and mesh plate are all made of stainless steel.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention effectively compensates for pressure loss during vertical flow of high-viscosity liquid by setting up a gradually narrowing liquid channel composed of alternating stacked plate support frames and mesh plates. This solves the problems of uneven flow velocity distribution and unbalanced filter cake formation in traditional equipment, thereby significantly improving filtration efficiency and operational stability. By independently setting a detachable cleaning port on each mesh plate, single-layer filter units can be quickly rinsed and maintained without disassembling the entire device, greatly simplifying the cleaning process, shortening downtime, and ensuring the smooth operation of continuous production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention with the cylinder removed;

[0020] Figure 3 This is an exploded view of the plate-type support frame, filter membrane, mesh plate, first central flow channel, second central flow channel, liquid inlet, liquid outlet and cleaning port of this utility model;

[0021] Figure 4 This is a partial structural cross-sectional view of the plate-type support frame, mesh plate, first central flow channel, second central flow channel, liquid inlet, and liquid outlet of this utility model.

[0022] Figure 5 This is a schematic diagram of the cleaning port structure in this utility model;

[0023] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 7 for Figure 2 Enlarged view of point B in the middle;

[0025] Figure 8 for Figure 2 Enlarged view of point C in the middle;

[0026] In the picture:

[0027] 1. Base; 2. Cylinder; 3. Lifting eye nut; 4. Plate support frame; 5. Filter membrane; 6. Mesh plate; 7. First central flow channel; 8. Second central flow channel; 9. Cleaning port; 10. Liquid inlet; 11. Liquid outlet; 12. Load-bearing rod; 13. Locking fastener; 1301. Compression nut; 1302. Pressure plate. Detailed Implementation

[0028] The present invention will now be described and illustrated in detail with reference to the embodiments.

[0029] Example 1

[0030] like Figure 1-8 As shown, the high-branched cyclic dextrin filtration device includes a base 1 and a cylinder 2. The cylinder 2 is detachably fitted onto the base 1 by a lifting nut 3. The cylinder 2 and the base 1 together form a filtration chamber. Several filtration units are stacked sequentially from top to bottom inside the filtration chamber. Each filtration unit includes a plate support frame 4, a filter membrane 5, and a mesh plate 6. The plate support frame 4 and the mesh plate 6 are stacked alternately in the vertical direction. The filter membrane 5 is sandwiched between the plate support frame 4 and the mesh plate 6. A first central flow channel 7 is provided at the center of the plate support frame 4, and a second central flow channel 8 is provided at the center of the mesh plate 6. The first central flow channel 7 and the second central flow channel 8 are sequentially and alternately connected to form a gradually narrowing liquid channel. The inner diameter of the gradually narrowing liquid channel gradually decreases from top to bottom. A cleaning port 9 is detachably provided on the mesh plate 6.

[0031] The side of the plate support frame 4 is provided with several liquid inlets 10.

[0032] The mesh plate 6 is provided with a number of liquid outlets 11, which are arranged through the side wall of the second central flow channel 8.

[0033] Several load-bearing rods 12 are vertically installed inside the filter chamber, and locking fasteners 13 are installed at the top of the load-bearing rods 12.

[0034] The locking fastener 13 includes a clamping nut 1301 screwed onto the top of the load-bearing rod 12, and a pressure plate 1302 is provided below the clamping nut 1301, which is sleeved on the load-bearing rod 12.

[0035] The bottom of the load-bearing rod 12 is provided with a snap-fit ​​part, and a fixing block is provided on the base 1 to cooperate with the snap-fit ​​part. The load-bearing rod 12 is snapped and fixed in the fixing block through the snap-fit ​​part.

[0036] Several load-bearing rods 12 are arranged around the edge of the filter unit, with a quantity of 6-8 rods 12.

[0037] The mesh plate 6 is equipped with a tubular interface to match the cleaning port 9, and the cleaning port 9 is threaded onto the tubular interface.

[0038] A sealing ring is provided between the base 1 and the cylinder 2.

[0039] The base 1, the cylinder 2, the plate support frame 4, and the mesh plate 6 are all made of stainless steel.

[0040] Working process and principle:

[0041] I. Equipment Assembly and Preparation

[0042] First, the snap-fit ​​parts at the bottom of the multiple load-bearing rods 12 are inserted into the corresponding fixing blocks on the base 1 to achieve vertical fixation. Then, the plate support frame 4, filter membrane 5, and mesh plate 6 are stacked alternately in sequence. The pressure plate 1302 is then placed on top of the load-bearing rods 12, and the clamping nut 1301 is tightened. All filter units are then pressed and fixed by the locking fastener 13. Finally, a sealing ring is placed on the base 1, the cylinder 2 is covered, and the two are locked and sealed with the eye nut 3 to form a complete filter chamber.

[0043] II. Filter Startup

[0044] The high-viscosity, highly branched cyclic dextrin liquid to be filtered is injected into the filtration chamber through the feed pipeline. Under pressure, the liquid enters each stage of the filtration unit through the liquid inlet 10 on the side of each plate-type support frame 4.

[0045] III. Filtration Process

[0046] After the feed liquid enters the filtration unit, it passes through the filter membrane 5 under pressure. The filter membrane 5 traps solid impurities in the feed liquid, and the clarified filtrate reaches one side of the screen plate 6. Subsequently, the filtrate flows into the second central flow channel 8 through the outlet 11 on the screen plate 6.

[0047] IV. Diversion and Collection

[0048] The filtrate flows from the second central channel 8 into the first central channel 7 of the next layer of plate support frame 4, and so on, alternating and flowing from top to bottom. As the inner diameter of the gradually narrowing liquid channel decreases step by step, it effectively compensates for the pressure loss when the high-viscosity fluid flows downward. Finally, all the filtrate gathers at the bottom of the gradually narrowing liquid channel and is discharged through the outlet of the base 1, completing the filtration.

[0049] V. Cleaning and Maintenance

[0050] When the filtration efficiency decreases or a new batch of filters needs cleaning, simply close the feed valve and discharge valve, open the cylinder 2, and open the cleaning port 9 on the screen 6 that needs cleaning. Through the cleaning port 9, an external flushing water pipe can be connected for reverse or forward flushing, or tools can be inserted for physical cleaning. After flushing, close the cleaning port 9 again to quickly restore equipment operation.

Claims

1. A highly branched cyclic dextrin filtration device, comprising a base (1) and a cylindrical body (2), wherein the cylindrical body (2) is detachably fitted onto the base (1) by means of a lifting nut (3), and the cylindrical body (2) and the base (1) together form a filtration chamber, wherein a plurality of filtration units are stacked sequentially from top to bottom inside the filtration chamber, characterized in that, The filtration unit includes a plate support frame (4), a filter membrane (5), and a mesh plate (6). The plate support frame (4) and the mesh plate (6) are stacked alternately in the vertical direction, and the filter membrane (5) is sandwiched between the plate support frame (4) and the mesh plate (6). A first central flow channel (7) is provided in the center of the plate support frame (4), and a second central flow channel (8) is provided in the center of the mesh plate (6). The first central flow channel (7) and the second central flow channel (8) are connected alternately in sequence to form a gradually narrowing liquid channel. The inner diameter of the gradually narrowing liquid channel gradually decreases from top to bottom. A cleaning port (9) is detachably provided on the mesh plate (6).

2. The highly branched cyclic dextrin filtration device according to claim 1, characterized in that, The side of the plate support frame (4) is provided with several liquid inlets (10).

3. The highly branched cyclic dextrin filtration device according to claim 1, characterized in that, The mesh plate (6) is provided with several liquid outlets (11), and the several liquid outlets (11) are provided through the side wall of the second central flow channel (8).

4. The highly branched cyclic dextrin filtration device according to claim 1, characterized in that, Several load-bearing rods (12) are vertically installed inside the filter chamber, and a locking fastener (13) is installed at the top of the load-bearing rods (12).

5. The highly branched cyclic dextrin filtration device according to claim 4, characterized in that, The locking fastener (13) includes a clamping nut (1301) screwed onto the top of the load-bearing rod (12), and a pressure plate (1302) is provided below the clamping nut (1301), which is sleeved on the load-bearing rod (12).

6. The highly branched cyclic dextrin filtration device according to claim 4, characterized in that, The bottom of the load-bearing rod (12) is provided with a snap-fit ​​part, and the base (1) is provided with a fixing block that matches the snap-fit ​​part. The load-bearing rod (12) is snapped and fixed in the fixing block through the snap-fit ​​part.

7. The highly branched cyclic dextrin filtration device according to claim 4, characterized in that, Several load-bearing rods (12) are arranged around the edge of the filter unit, with a number of 6-8 load-bearing rods (12).

8. The highly branched cyclic dextrin filtration device according to claim 1, characterized in that, The mesh plate (6) is equipped with a tubular interface that matches the cleaning port (9), and the cleaning port (9) is threaded onto the tubular interface.

9. The highly branched cyclic dextrin filtration device according to claim 1, characterized in that, A sealing ring is provided between the base (1) and the cylinder (2).

10. The highly branched cyclic dextrin filtration device according to claim 1, characterized in that, The base (1), the cylinder (2), the plate support frame (4), and the mesh plate (6) are all made of stainless steel.

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