Stacked deep filter element and deep filter

Abstract

The utility model discloses a stack type deep layer filter element and deep layer filter, including at least two axially stacked deep layer filter units, the surface of deep layer filter unit is provided with the filter medium, the liquid inlet side of stack type deep layer filter element is provided with the guard plate, and the guard plate is provided with the filter medium. And the projection of the protection plate along the axial direction of the deep filtering unit at least partially covers the filtering medium. The utility model aims to effectively reduce the impact of material liquid on a liquid inlet side on a filtering medium, improve the protection effect on the filtering medium and ensure the stability of a filtering process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to deep filtration technical field especially relates to a stacked deep filter element and deep filter. BACKGROUND

[0002] At present, the common deep filter element and deep filter in market, because the function of stackable can realize the requirement of different filtration capacity, so it is widely used in food and beverage, semiconductor and biological medicine industry. In normal use process, the deep filter element can stack single and multiple according to actual demand and install in stainless steel clamp, also can install a group of deep filter element and filter shell to form a whole deep filter. The uppermost and lowermost of deep filter install a cover plate respectively, and the middle region stack installs 1-10 same deep filter. These deep filters are parallel structure, and reach the target filtration area and filtration capacity.

[0003] In actual use scene, the material liquid enters into the filter from outside, and the flow rate of filtration is directly related to the filtration area, and the processing capacity of deep filter element is large, so it needs large flow rate filtration. With the increase of filtration area, the flow rate of material liquid entering deep filter element and filter also needs to increase accordingly, and in the process of flushing and filtration, the impact strength of the filter medium near the liquid inlet at the lowermost or uppermost of deep filter element is large, and the filter medium is damaged and blocked early, which influences the filtration load of filter and even destroys the integrity of deep filter element, and the stability of filtration process is greatly challenged. UTILITY MODEL CONTENTS

[0004] The utility model provides a stacked deep filter element and deep filter, effectively slow down the impact of liquid side material liquid to filter medium, improve the protection effect to filter medium, guarantee the stability of filtration process.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A stacked deep filter element, including at least two deep filtration units stacked along the axial direction, the surface of the deep filtration unit is provided with filter medium, the liquid inlet side of the stacked deep filter element is provided with a protection plate, and the projection of the protection plate along the axial direction of the deep filtration unit at least partially covers the filter medium. The protection plate is arranged at the liquid inlet side, which can reduce the impact force of the material liquid on the filter medium when the material liquid enters, and the existence of the protection plate solves the problem of damage or even rupture of the filter medium, thereby ensuring that the filtration process is stable and reliable. At the same time, the protection plate can guide the flow of the incoming material liquid, so that most of the liquid preferentially flows to the outside of the stacked deep filter element, so that the filter medium of each deep filtration unit is fully utilized.

[0007] Preferably, the outer diameter of the protective plate is 40% to 80% of the outer diameter of the filter medium. A reasonable range of the outer diameter of the protective plate can fully exert the protective effect of the protective plate while preventing the protective plate from excessively covering the filter medium in the area and affecting the effective filtration area.

[0008] Preferably, the protective plate is provided with an annular protrusion on the side closest to the filter medium. The annular protrusion forms a seal between the protective plate and the filter medium, preventing the original feed liquid from mixing with the filtered filtrate. At the same time, it creates a cavity between the protective plate and the filter medium, reducing the risk of the protective plate covering the effective filter area in this area.

[0009] Preferably, the height of the annular protrusion is 1 to 5 mm.

[0010] Preferably, the protection plate is provided with a groove body penetrating along the axial direction, which can enhance the throttling and buffering effect of the protection plate and accelerate the flow of liquid to the filter medium surface of the adjacent deep filter unit.

[0011] Preferably, the inner diameter of the protective plate is consistent with that of the filter medium. Because the liquid flow rate is higher near the inner diameter of the filter medium, the protective plate effectively reduces the impact of the liquid on the inner diameter side of the filter medium, thereby enhancing the protective effect of the inner diameter side of the filter medium. Furthermore, by ensuring that the inner diameter of the protective plate is consistent with the inner diameter of the filter medium, the through-holes in the protective plate and the through-holes in the filter medium are connected, ensuring smooth outflow of the filtrate. The annular protrusion on the protective plate also seals the filter medium. A larger inner diameter of the protective plate would waste the effective filtration area of ​​the filter medium.

[0012] Preferably, the filter medium includes a first filter medium and a second filter medium, a flow channel is provided between the first filter medium and the second filter medium, and a rubber coating is provided on the periphery of the filter medium.

[0013] Preferably, each of the first and second filter media comprises an outer medium layer and an inner medium layer. The outer medium layer has a larger pore size than the inner medium layer, and a support member is provided between the outer and inner medium layers. During the flushing and filtration process, the support member effectively prevents the first filter media from sagging against the second filter media, significantly improving filtration flux and providing effective filtration area.

[0014] A deep filter comprises at least one stacked deep filter and a shell located outside the stacked deep filter, wherein the shell is provided with a liquid inlet and a liquid outlet, and the protection plate is located between the liquid inlet and the deep filter unit.

[0015] Preferably, the liquid outlet is arranged at the center of the shell, and the liquid inlet is arranged around the liquid outlet.

[0016] The protective plate can effectively slow down the vertical force of the material liquid on the filtering medium, effectively prevent the filtering medium from being damaged due to high-speed impact of the material liquid, ensure the integrity of the stacked deep filter element, and make the filtering process stable and reliable; (2) the protective plate can guide the flow of the entering material liquid, so that most of the liquid preferentially flows to the outside of the stacked deep filter element, so that the filtering medium of each deep filtering unit is fully utilized; (3) the setting of the protective plate can avoid excessive covering of the filtering medium and loss of the effective filtering area of the filtering medium, thereby ensuring the filtering efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of a stacked deep filter element embodiment 1 of the utility model;

[0018] Figure 2 is a sectional view of the stacked deep filter element embodiment 1 of the utility model;

[0019] Figure 3 is a structural schematic view of a protective plate of the stacked deep filter element embodiment 1 of the utility model;

[0020] Figure 4 is a sectional view of a deep filtering unit of the utility model;

[0021] Figure 5 is a structural schematic view of a stacked deep filter element embodiment 2 of the utility model;

[0022] Figure 6 is a structural schematic view of a deep filter of the utility model;

[0023] Figure 7 is a sectional view of the deep filter of the utility model.

[0024] In the drawing: deep filtering unit 1, filtering medium 11, first filtering medium 111, second filtering medium 112, outer medium layer 11a, inner medium layer 11b, support 12, flow channel 13, protective plate 2, annular protrusion 2a, groove body 2b, gasket 3, shell 4, upper shell 4a, lower shell 4b, liquid outlet 41, liquid inlet 42. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and specific embodiments.

[0026] Embodiment 1

[0027] As Figure 1In the shown embodiment, a stacked deep filter element comprises a plurality of deep filtration units 1 arranged in axial stacking, and a space is reserved in the center of the deep filtration units 1 for the flow of filtered liquid. The surface of the deep filtration units 1 is provided with a filter medium 11, and the liquid inlet side of the stacked deep filter element is provided with a protective plate 2 which is also arranged coaxially with the deep filtration units 1, and the projection of the protective plate 2 along the axial direction of the deep filtration units 1 at least partially covers the filter medium 11.

[0028] In combination Figure 1 , Figure 2 , the outer periphery of the protective plate 2 is circular, and the upper and lower ends of the stacked deep filter element are both provided with a protective plate 2. The inner diameter of at least one protective plate 2 is consistent with the inner diameter of the filter medium 11, thereby effectively avoiding the direct action of the vertical force of the inlet liquid on the inner diameter of the filter medium 11. The outer diameter of the protective plate 2 is 40% to 80% of the outer diameter of the filter medium 11. After flowing through 40%, the flow rate of the feed liquid is significantly reduced, and the outer diameter of the protective plate 2 must be greater than or equal to 40% of the outer diameter of the filter medium 11, so that the protective effect of the protective plate 2 can be fully exerted. At the same time, the outer diameter of the protective plate 2 must be less than or equal to 80% of the outer diameter of the filter medium 11. The protective plate 2 has the risk of covering the filter medium 11 in this area. The larger the outer diameter, the larger the area of the filter medium 11 it occupies. This setting can minimize the risk of reducing the effective filtration area due to excessive coverage of the filter medium 11.

[0029] In combination Figure 2 , Figure 3 , the side of the protective plate 2 close to the filter medium 11 is provided with an annular protrusion 2a, and the height of the annular protrusion 2a is 1 to 5 mm. The annular protrusion 2a acts on the deep filtration unit 1 to realize the sealing between the protective plate 2 and the filter medium 11. At the same time, the annular protrusion 2a pads a cavity between the protective plate 2 and the filter medium 11, so as to facilitate the flow of the feed liquid into the cavity and contact the surface of the filter medium 11, thereby ensuring the effective filtration area of the filter medium 11.

[0030] As shown in Figure 2 , a gasket 3 is arranged between adjacent deep filtration units 1. The gasket 3 forms a seal between adjacent deep filtration units 1 to prevent the feed liquid from flowing directly to the liquid outlet side, and also separates adjacent deep filtration units 1 by a certain gap to facilitate the smooth contact of the feed liquid with the filter medium 11 of each deep filtration unit 1.

[0031] The filter medium 11 comprises a first filter medium 111 and a second filter medium 112, as shown in Figure 4As shown, a flow channel 13 is arranged between the first filter medium 111 and the second filter medium 112, and the flow channel 13 is arranged between the two groups of filter media to facilitate smooth liquid outflow. The outer periphery of the filter medium 11 is fixed by the encapsulating member, and the outer periphery of the filter medium 11 is sealed. The first filter medium 111 and the second filter medium 112 each include an outer medium layer 11a and an inner medium layer 11b, the filter pore size of the outer medium layer 11a is larger than the filter pore size of the inner medium layer 11b, and a support member 12 is arranged between the outer medium layer 11a and the inner medium layer 11b. The support member 12 can support and position the outer medium layer 11a and the inner medium layer 11b, prevent the outer medium layer 11a from being attached to the inner medium layer 11b under the action of pressure, thereby improving the filtration flux of the stacked deep filter element and ensuring the effective filtration area.

[0032] Example 2

[0033] Example 2 differs from Example 1 in that, as shown, Figure 5 The protection plate 2 is provided with a slot 2b penetrating along the axial direction, which increases the buffering effect and accelerates the flow of liquid to the medium surface of the adjacent filter unit.

[0034] A deep filter, as shown in Figure 6 , Figure 7 includes a stacked deep filter element and a shell 4 located outside the stacked deep filter element. The shell 4 is composed of an upper shell 4a and a lower shell 4b. After a plurality of deep filter units 1 are assembled into a stacked deep filter element and placed between the upper shell 4a and the lower shell 4b, the center positions of the upper shell 4a and the lower shell 4b are provided with interlocking locks, and the upper shell 4a and the lower shell 4b are formed into a complete shell 4 by means of hot melt welding. The extrusion of the upper shell 4a and the lower shell 4b on the protection plate 2 and the deep filter unit 1 realizes sealing to prevent direct mixing of the feed liquid and the filtered liquid. The stacked deep filter element can also be formed by arranging a center rod with holes in the center of the deep filter unit 1 and fixedly connecting the center rod with the protection plates 2 at the upper and lower ends of the stacked deep filter element, so that it can realize the sealing effect by itself. Therefore, a stainless steel filter shell can also be used. The shell 4 is provided with a liquid inlet 42 and a liquid outlet 41, wherein the liquid outlet 41 is arranged at the center of the shell 4, and the liquid inlet 42 is arranged around the liquid outlet 41. When the stacked deep filter element is arranged in the shell 4, the protection plate 2 is located between the liquid inlet 42 and the deep filter unit 1, and the position of the liquid inlet 42 is opposite to the protection plate 2.

[0035] In actual operation, the large flow of feed liquid enters into the inside of the shell 4 from the liquid inlet 42 of the deep filter, the protection plate 2 can slow down the vertical force of the feed liquid of the liquid inlet 42 on the filter medium of the deep filter unit 1, thereby protecting the filter medium. In addition, the protection plate 2 also plays a guiding role on the feed liquid, so that most of the feed liquid is preferentially guided into the cavity outside the stacked deep filter element, the feed liquid is more evenly distributed on each deep filter unit 1, so that the filter medium of each deep filter unit 1 can fully participate in the filtration process, thereby effectively improving the filtration efficiency. After the feed liquid is deeply filtered by the filter medium of the deep filter unit 1, it is gathered in the center of the deep filter unit 1 and discharged from the liquid outlet 41 of the shell 4.

[0036] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been set forth in this paper by the application of specific example, the above embodiment is just for helping to understand the method of the utility model and its core thought; simultaneously, for the technical personnel of the field, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above-mentioned, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A stacked deep filter element comprising at least two deep filter units (1) stacked in an axial direction, wherein a filter medium (11) is provided on the surface of the deep filter unit (1), and wherein: A protective plate (2) is provided on the liquid inlet side of the stacked deep filter element, and the projection of the protective plate (2) along the axial direction of the deep filter unit (1) at least partially covers the filter medium (11).

2. A stacked deep filter element according to claim 1, characterized in that: The outer diameter of the protection plate (2) is 40% to 80% of the outer diameter of the filter medium (11).

3. A stacked deep filter element according to claim 1, characterized in that: The protection plate (2) is provided with an annular protrusion (2a) on one side close to the filter medium (11).

4. A stacked deep filter element according to claim 3, characterized in that: The height of the annular protrusion (2a) is 1 to 5 mm.

5. A stacked deep filter element according to any one of claims 1 to 4, characterized in that: The protection plate (2) is provided with a groove body (2b) penetrating along the axial direction.

6. A stacked deep filter element according to any one of claims 1 to 4, characterized in that: The inner diameter of the protection plate (2) is consistent with the inner diameter of the filter medium (11).

7. The stacked deep filter element according to claim 1, wherein: The filter medium (11) comprises a first filter medium (111) and a second filter medium (112); a flow channel (13) is provided between the first filter medium (111) and the second filter medium (112); and a rubber coating is provided on the outer periphery of the filter medium (11).

8. The stacked deep filter element according to claim 7, wherein: The first filter medium (111) and the second filter medium (112) both comprise an outer medium layer (11a) and an inner medium layer (11b); the filter aperture of the outer medium layer (11a) is larger than the filter aperture of the inner medium layer (11b); and a support member (12) is provided between the outer medium layer (11a) and the inner medium layer (11b).

9. A deep filter, characterized in that The invention comprises at least one stacked deep filter element according to any one of claims 1 to 8 and a shell (4) located outside the stacked deep filter element, wherein the shell (4) is provided with a liquid inlet (42) and a liquid outlet (41), and the protective plate (2) is located between the liquid inlet (42) and the deep filter unit (1).

10. A depth filter according to claim 9, characterized in that: The liquid outlet (41) is arranged at the center of the housing (4), and the liquid inlet (42) is arranged around the liquid outlet (41).

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