Deep filter

Abstract

The utility model provides a deep layer filter which comprises a deep layer filter medium and a frame, the periphery of the frame and the periphery of the deep layer filter medium are connected in a sealed mode to form a deep layer filter unit, the outer edge of the frame is provided with a frame containing groove, and the height of the outer side wall of the frame containing groove is larger than that of the inner side wall of the frame containing groove. The outer side wall of the frame containing groove is higher than the inner side wall of the frame containing groove, so that overflowing materials in the frame containing groove can be effectively prevented from flowing to the outer edge of the frame, and the smoothness of the outer edge of the deep filter is ensured; 2, a liquid inlet notch is formed in the frame liquid inlet corresponding to the liquid inlet side of the deep filtering medium, and a liquid outlet notch is formed in the frame liquid outlet corresponding to the liquid outlet side of the deep filtering medium, so that the frame liquid inlet can be directly communicated with the liquid inlet side of the deep filtering medium, and the frame liquid outlet can be directly communicated with the liquid outlet side of the deep filtering medium; the liquid flowing path is shortened, and the filtering efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and in particular to depth filters. Background Technology

[0002] Food processing, chemical production, pharmaceutical engineering, and electronics manufacturing industries have extremely stringent purity and microbiological control standards for process fluids (including feedstock and finished products). As a core component of multi-stage filtration systems, depth filtration devices, with their excellent environmental adaptability, high-efficiency retention performance, and modular operation, have become crucial equipment in the pretreatment, intermediate purification, and final filtration stages of production lines in these industries. The core filter medium of this device uses natural cellulose fibers as a base material, and through the addition of functional components such as diatomaceous earth filter aids, polymer binders, and permeation enhancers, a gradient pore structure is constructed using a special process, thereby precisely adapting to the filtration and separation needs of different fluid systems.

[0003] Under conditions of high pressure differential and high shear velocity, the component assembly process has significant defects: the existing frame connection uses welding, resulting in localized melting between the frame and the outer shell. The molten material diffuses along the weld towards the outer edge of the component, forming an irregular overflow layer. This material migration phenomenon has the following adverse effects: 1. High surface roughness of the filter, typically Ra > 6.3 μm; 2. Increased risk of microbial growth due to the uneven surface structure; 3. Contamination of the product during transportation due to spillage and damage to the packaging layer. Utility Model Content

[0004] The purpose of this utility model is to disclose a depth filter. By making the height of the outer wall of the frame receiving groove higher than the height of the inner wall, the overflow in the frame receiving groove can be effectively limited to flow to the outer edge of the frame, ensuring the flatness of the outer edge of the depth filter. An inlet notch is provided on the frame inlet corresponding to the liquid inlet side of the depth filter medium, and an outlet notch is provided on the frame outlet corresponding to the liquid outlet side of the depth filter medium. This ensures direct communication between the frame inlet and the liquid inlet side of the depth filter medium, and direct communication between the frame outlet and the liquid outlet side of the depth filter medium, shortening the liquid flow path and improving the filtration efficiency.

[0005] To achieve the above objectives, this utility model provides a depth filter, including a depth filter medium and a frame. The frame and the outer periphery of the depth filter medium are sealed together to form a depth filter unit. The frame is provided with a frame inlet and a frame vent that communicate with the liquid inlet side of the depth filter medium. The frame is also provided with a frame outlet that communicates with the liquid outlet side of the depth filter medium. The frame has a frame receiving groove on at least one side of its outer edge that is parallel or approximately parallel to the depth filter medium. The height of the outer wall of the frame receiving groove is higher than the height of the inner wall.

[0006] In some embodiments, the ratio of the height of the outer sidewall to the height of the inner sidewall of the frame receiving groove is 1.1-4.

[0007] In some embodiments, the width of the frame receiving groove is 0.2-6mm, the thickness of the outer wall of the frame receiving groove is 0.1-2mm, and the depth of the frame receiving groove is 0.4-8mm.

[0008] In some embodiments, the frame is provided with a liquid inlet tank and a liquid outlet tank. The liquid inlet tank and the liquid inlet of the frame are interconnected to form a liquid inlet channel. The liquid inlet tank and the vent of the frame are interconnected to form a venting channel. The liquid outlet tank and the liquid outlet of the frame are interconnected to form a liquid outlet channel.

[0009] In some embodiments, the frame includes a first frame near the liquid inlet and the vent of the frame, a second frame near the liquid outlet of the frame, and a third frame for connecting the first frame and the second frame; the inner periphery of the first frame corresponding to the liquid inlet side of the deep filter medium and the inner periphery of the second frame corresponding to the liquid outlet side of the deep filter medium are both provided with flow grooves, and the flow grooves are provided with a plurality of flow protrusions at intervals.

[0010] In some embodiments, the inlet port on the frame corresponding to the liquid inlet side of the deep filter medium is provided with an inlet notch, and the outlet port on the frame corresponding to the liquid outlet side of the deep filter medium is provided with an outlet notch.

[0011] In some embodiments, the edge of the frame is provided with a frame sealing protrusion, the frame sealing protrusion including at least two welded sealing edges.

[0012] In some embodiments, the system also includes two end plates, with a plurality of deep filter units disposed between the two end plates. Adjacent deep filter units are welded together, and there is a gap between the outer walls of adjacent deep filter units.

[0013] In some embodiments, the deep filtration unit is fixedly connected to the end plate. The end plate is provided with an end plate inlet, an end plate outlet, and an end plate vent that are connected to the edge of the frame liquid inlet, the edge of the frame liquid outlet, and the edge of the frame vent. The end plate is provided with an end plate receiving groove that corresponds to the position of the edge receiving groove. The edge of the frame is provided with a frame sealing protrusion, and the end plate is provided with an end plate sealing protrusion that corresponds to the position of the edge sealing protrusion.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By making the height of the outer wall of the frame receiving groove higher than the height of the inner wall, the overflow in the frame receiving groove can be effectively limited to the outer edge of the frame, ensuring the flatness of the outer edge of the deep filter.

[0016] Second, an inlet notch is provided on the frame inlet corresponding to the liquid inlet side of the deep filter medium, and an outlet notch is provided on the frame outlet corresponding to the liquid outlet side of the deep filter medium. This ensures direct connection between the frame inlet and the liquid inlet side of the deep filter medium, and direct connection between the frame outlet and the liquid outlet side of the deep filter medium, shortening the liquid flow path and improving filtration efficiency. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the liquid inlet side of the deep filtration unit shown in this utility model;

[0018] Figure 2 This is a structural diagram of the liquid outlet side of the deep filtration unit shown in this utility model;

[0019] Figure 3 for Figure 2 A half-section view;

[0020] Figure 4 for Figure 3 The structural diagram of the border shown;

[0021] Figure 5 This is a structural diagram of the depth filter shown in this utility model;

[0022] Figure 6 This is an exploded view of the depth filter shown in this utility model;

[0023] Figure 7 for Figure 6 The diagram shows the connection structure of the deep filtration unit. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0025] like Figure 1-7 The depth filter shown includes a depth filter medium 2 and a frame 10, wherein the frame 10 and the outer periphery of the depth filter medium 2 are sealed together to form a depth filter unit 1.

[0026] The frame 10 includes a first frame 10a near the frame inlet 1a and the frame outlet 1b, a second frame 10c near the frame outlet 1c, and a third frame 10b for connecting the first frame 10a and the second frame 10c. The first frame 10a, the second frame 10c, and the third frame 10b are all provided with frame sealing protrusions 12. Both the outer and inner peripheral edges of the frame 10 are provided with frame sealing protrusions 12, and each frame sealing protrusion 12 has two welded sealing edges 12a, reducing the difficulty of forming the frame 10 and the welding process, thus helping to reduce production costs.

[0027] The frame 10 is provided with a frame inlet 1a and a frame exhaust port 1b that are connected to the liquid inlet side of the deep filter medium 2, and the frame 10 is provided with a frame outlet 1c that is connected to the liquid outlet side of the deep filter medium 2.

[0028] The frame 10 is provided with an inlet tank 10d and an outlet tank 10e. The inlet tank 10d is interconnected with the inlet port 1a of the frame to form an inlet channel, and the inlet tank 10d is interconnected with the vent port 1b of the frame to form an vent channel. The outlet tank 10e is interconnected with the outlet port 1c of the frame to form an outlet channel. When the material enters the depth filtration unit 1 from the inlet port 1a of the frame, it is filtered by the depth filtration medium 2 to obtain permeate. The permeate is discharged from the depth filtration unit 1 along the outlet port 1c of the frame, while the bubbles generated during filtration and the bubbles mixed in with the material are discharged from the depth filtration unit 1 along the vent port 1b of the frame.

[0029] Both the inner circumference of the first frame 10a corresponding to the liquid inlet side of the deep filter medium 2 and the inner circumference of the second frame 10c corresponding to the liquid outlet side of the deep filter medium 2 are provided with flow grooves 102. The flow grooves 102 ensure that the liquid inlet channel and the exhaust channel are connected to the liquid inlet side of the deep filter medium 2, and the liquid outlet channel is connected to the liquid outlet side of the deep filter medium 2. Several flow protrusions 103 are spaced apart on the flow grooves 102, with a circumferential length of 8-20 mm along the frame 10. The flow protrusions 103 further enhance the connection strength of the frame 10 to the outer circumference of the deep filter medium 2, ensuring the structural stability of the deep filter unit 1 and the welded and fixed deep filter.

[0030] The deep filter medium 2 has an inlet notch 1aa on the inlet port 1a on the side corresponding to the liquid inlet side and an outlet notch 1cc on the outlet port 1c on the side corresponding to the liquid outlet side. This ensures that the inlet port 1a is directly connected to the inlet side of the deep filter medium 2 and the outlet port 1c is directly connected to the outlet side of the deep filter medium 2, thus shortening the liquid flow path and improving the filtration efficiency.

[0031] The frame 10 is provided with frame receiving grooves 11 on both outer edges of the two sides parallel or approximately parallel to the deep filter medium 2.

[0032] The width of the frame receiving groove 11 is 0.2-6 mm, the thickness of the outer wall 11a of the frame receiving groove 11 is 0.1-2 mm, and the depth of the frame receiving groove 11 is 0.4-8 mm. The appropriate width and depth of the frame receiving groove 11 ensure that the volume of the frame receiving groove 11 for storing overflow material is sufficient without affecting the strength of the frame 10. The frame receiving groove 11 has an outer wall 11a of suitable thickness to ensure the strength of the outer wall 11a and to prevent overflow material from the outer wall 11a during the welding process.

[0033] The height of the outer wall 11a of the frame receiving groove 11 is higher than the height of the inner wall 11b. When the connection is fixed by welding, the overflow flows into the frame receiving groove 11. The height of the outer wall 11a is higher than the height of the inner wall 11b, which can effectively limit the overflow in the frame receiving groove 11 from flowing to the outer edge of the frame 10, ensuring the flatness of the outer edge of the deep filter.

[0034] The ratio of the height of the outer wall 11a to the height of the inner wall 11b of the frame receiving groove 11 is 1.1-4. This ensures that during welding of adjacent deep filter units 1, the gap between the outer walls 11a of the frame receiving groove 11 is controlled within a suitable range. This prevents the gap from being too large, which would affect the strength of the outer side of the frame 10, and also prevents the gap from being too small, which would affect the welding between the frames 10 and cause the outer walls 11a of the frame receiving groove 11 to melt and weld, resulting in overflow.

[0035] In the actual filtration process, the material enters the deep filtration unit 1 through the inlet 1a on the side and the inlet gap 1aa or the flow channel 102. Under the filtration of the deep filtration medium 2, the permeate is formed. The permeate is discharged to the outlet 1c on the side through the outlet gap 1cc or the flow channel 102 and finally discharged from the deep filtration unit 1. The remaining permeate and air bubbles in the material after filtration are discharged from the deep filter through the exhaust channel and the exhaust port 1b on the side.

[0036] It also includes two end plates 3, with several deep filtration units 1 disposed between the two end plates 3. The deep filtration units 1 are fixedly connected to the end plates 3, and the fixed connection can be achieved by ultrasonic welding, hot melt welding, or other connection methods. The end plate 3 is provided with an end plate inlet 3a, an end plate outlet 3c, and an end plate vent 3b. After the end plate 3 is welded to the deep filtration unit 1, the end plate inlet 3a is connected to the side inlet 1a, and the end plate outlet 3c is connected to the side outlet 1c. The end plate vent 3b is connected to the side vent 1b. The end plate 3 is provided with an end plate receiving groove 31 corresponding to the position of the side receiving groove 11, thereby storing the overflow material generated during the welding and fixing of the end plate 3 and the deep filtration unit 1.

[0037] The end plate 3 is provided with an end plate sealing protrusion 32 corresponding to the position of the frame sealing protrusion 12. During welding and fixing, the frame sealing protrusion 12 and the end plate sealing protrusion 32 are welded to each other to ensure the sealing effect between the end plate 3 and the deep filter unit 1.

[0038] Adjacent deep filter units 1 are welded together, and there is a gap 30 between the outer walls 11a of adjacent deep filter units 1. No melting occurs during the welding process, which can effectively reduce the generation of overflow.

[0039] In the actual filtration process, the material enters the depth filter through the end plate inlet 3a and becomes permeate after being filtered by the depth filter media 2 inside multiple depth filter units 1. The permeate is finally discharged from the depth filter through the end plate outlet 3c. The remaining permeate and air bubbles in the material are discharged from the depth filter through the end plate exhaust port 3b.

[0040] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A depth filter, comprising a depth filter medium (2) and a frame (10), wherein the frame (10) and the outer periphery of the depth filter medium (2) are sealed together to form a depth filter unit (1), the frame (10) is provided with a frame inlet (1a) and a frame vent (1b) communicating with the liquid inlet side of the depth filter medium (2), the frame (10) is provided with a frame outlet (1c) communicating with the liquid outlet side of the depth filter medium (2), and the frame (10) has a frame receiving groove (11) on at least one side outer edge parallel to or approximately parallel to the depth filter medium (2), characterized in that, The height of the outer wall (11a) of the frame receiving groove (11) is higher than the height of the inner wall (11b).

2. The depth filter according to claim 1, characterized in that, The ratio of the height of the outer sidewall (11a) to the height of the inner sidewall (11b) of the frame receiving groove (11) is 1.1-4.

3. The depth filter according to claim 1, characterized in that, The width of the frame receiving groove (11) is 0.2-6mm, the thickness of the outer wall (11a) of the frame receiving groove (11) is 0.1-2mm, and the depth of the frame receiving groove (11) is 0.4-8mm.

4. The depth filter according to claim 1, characterized in that, The frame (10) is provided with an inlet tank (10d) and an outlet tank (10e). The inlet tank (10d) is connected to the inlet port (1a) of the frame to form an inlet channel. The inlet tank (10d) is connected to the vent port (1b) of the frame to form an vent channel. The outlet tank (10e) is connected to the outlet port (1c) of the frame to form an outlet channel.

5. The depth filter according to claim 4, characterized in that, The frame (10) includes a first frame (10a) near the frame inlet (1a) and the frame outlet (1b), a second frame (10c) near the frame outlet (1c), and a third frame (10b) for connecting the first frame (10a) and the second frame (10c). The inner periphery of the first frame (10a) corresponding to the liquid inlet side of the deep filter medium (2) and the inner periphery of the second frame (10c) corresponding to the liquid outlet side of the deep filter medium (2) are both provided with flow grooves (102), and a plurality of flow protrusions (103) are provided on the flow grooves (102) at intervals.

6. The depth filter according to claim 5, characterized in that, The deep filter medium (2) has an inlet notch (1aa) on the inlet side of the frame corresponding to the inlet side and an outlet notch (1cc) on the outlet side of the frame corresponding to the outlet side.

7. The depth filter according to claim 1, characterized in that, The edge of the frame (10) is provided with a frame sealing protrusion (12), which includes at least two welded sealing edges (12a).

8. The depth filter according to any one of claims 1-7, characterized in that, It also includes two end plates (3), and a number of deep filter units (1) are provided between the two end plates (3). Adjacent deep filter units (1) are welded together, and there is a gap (30) between the outer walls (11a) of adjacent deep filter units (1).

9. The depth filter according to claim 8, characterized in that, The deep filtration unit (1) is fixedly connected to the end plate (3). The end plate (3) is provided with an end plate inlet (3a), an end plate outlet (3c), and an end plate exhaust port (3b) that are connected to the edge inlet (1a), the edge outlet (1c), and the edge exhaust port (1b). The end plate (3) is provided with an end plate receiving groove (31) that corresponds to the position of the edge receiving groove (11). The edge of the edge (10) is provided with an edge sealing protrusion (12). The end plate (3) is provided with an end plate sealing protrusion (32) that corresponds to the position of the edge sealing protrusion (12).

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