Y-shaped inclined hole one-way cross-flow filter element

Abstract

The utility model discloses a Y-shaped inclined hole one-way cross-flow filter element, and relates to the technical field of filter elements. A filter element is fixedly arranged in a filter element filtering outer pipe, the filter element adopts a tubular film, at least one filter element is arranged in the filter element filtering outer pipe, inclined holes are distributed on the surface of the film, and the inclined holes and the flow direction of the filter element are arranged in a Y shape; filtering stock solution flows from one end of the filtering element to the other end of the filtering element, and the included angle between the inclined hole and the flowing direction of the filtering stock solution in the filtering element is beta < lt >. 90 degrees; the inclined holes and the flow direction of the filter element form a Y-shaped layout; due to the fact that the flushing force of the Y-shaped cross-flow filter element on filter residues at the point is cos beta, the flow speed and flow of cross-flow flushing liquid are greatly reduced during normal filtration, and compared with a filter with a common T-shaped cross-flow filter element, the filter has the advantages of being not prone to being blocked, large in filtering flow, low in filtering pressure and more energy-saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter elements, in particular to a Y-shaped inclined hole unidirectional cross-flow filter element. Background Art

[0002] Filter elements are used to separate solid particles from liquids or gases, or to allow different material components to fully contact and speed up the reaction time. They are used to protect the normal operation of equipment or the cleanliness of air. When the fluid enters the filter element with a filter screen of a certain specification, impurities are blocked, and the clean fluid flows out through the filter element.

[0003] The existing common cross-flow filter element refers to a T-shaped filtering state formed by the flow direction of the filtered liquid and the flow direction of the filter element outlet liquid being perpendicular to each other, as shown in the figure of the specification. Figure 1 As shown, the T-shaped filtering state can make the filtered liquid flow at a relatively high speed in the direction perpendicular to the filtrate, which has a certain flushing effect on the filtered solid matter, also known as filter cake, so that the filtered solid matter, also known as filter cake or filter residue, accumulates on the surface of the filter element at a slower speed; in this way, the filter element needs to be regenerated and the interval for removing the filter cake is lengthened, and the filtering flow rate is relatively large. The existing ordinary T-type cross-flow filter element has the following disadvantages: (1) Since the angle between the filtrate and the filtrate is 90 degrees, if the filtered material is stuck in the orifice, due to the mechanical reasons of the two streams, the filtered clear liquid flows into the hole with a thrust, pushing the filter residue stuck in the orifice into the hole, while the force of the main flow liquid in the filter element to flush the filter residue out of the orifice is zero, and the possibility of the filtered material being flushed out of the orifice is zero, so there is still a possibility that the filtered material will accumulate and stay in the filter element hole, causing the filter hole of the filter element to be blocked, and physical regeneration cleaning or chemical regeneration cleaning must be performed after filtering for a period of time; (2) Since the angle between the filtrate and the filtrate is 90 degrees, if the filtered material is pressed into the surface of the filter orifice, it is necessary to flush away the filtered material, which requires the water pump to provide a larger flow rate and flow, so that a large amount of electric energy is consumed during the filtration process, which will increase a lot of costs for users and is not conducive to energy saving and emission reduction. Therefore, the present technical solution provides a Y-type inclined hole unidirectional cross-flow filter element. Utility Model Content

[0004] The utility model provides a Y-shaped inclined hole unidirectional cross-flow filter element, the number of which is at least one through the filter element connection end installed in the filter outer tube of the filter element, the surface of the tubular film is distributed with inclined holes, and the angle β between the inclined holes and the flow direction of the filtered raw liquid in the filter element is less than 90°, and the inclined holes and the flow direction of the filter element are arranged in a Y shape; since the flushing force of the Y-shaped cross-flow filter element on the filter residue at this point is cosβ, the flow rate and flow of the cross-flow flushing liquid are greatly reduced during normal filtration, and compared with the filter of the ordinary T-shaped cross-flow filter element, the filter is not easy to be blocked, the filtering flow rate is large, the filtering pressure is low, and it is more energy-saving; in summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a Y-shaped oblique hole one-way cross-flow filter element, which is fixedly installed transversely in the filter outer tube of the filter element;

[0007] The filter element adopts a tubular membrane, at least one of which is installed in the filter outer tube of the filter element, and oblique holes are distributed on the surface of the membrane, and the oblique holes and the flow direction of the filter element are arranged in a Y shape;

[0008] The filtered raw liquid flows from one end of the filter element to the other end, and the angle β between the inclined hole and the flow direction of the filtered raw liquid in the filter element is less than 90°.

[0009] Furthermore, the diameter of the inclined hole is 0.1 to 1 micrometer.

[0010] Furthermore, filter element connection ends connected to the filter element are provided at both ends of the filter element filtering outer tube, a cavity is provided between the filter element and the filter element filtering outer tube, and a filter element liquid outlet connected to the cavity is provided at the bottom of the filter element filtering outer tube.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The number of filter elements installed in the filter outer tube of the filter element through the filter element connection end of the present technical solution is at least one, and the surface of the tubular film is distributed with oblique holes, and the angle β between the oblique holes and the flow direction of the filtered raw liquid in the filter element is less than 90°, and the oblique holes and the flow direction of the filter element are arranged in a Y shape; because the flushing force of the Y-type cross-flow filter element on the filter residue at this point is cosβ, the flow rate and flow of the cross-flow flushing liquid are greatly reduced during normal filtration, and compared with the filter of the ordinary T-type cross-flow filter element, it is not easy to be blocked, has a large filtration flow rate, a low filtration pressure, and is more energy-saving;

[0013] (2) It has a good protective effect on sensitive liquids in the biopharmaceutical industry. For example, a company originally used an ordinary T-type cross-flow filter element, which required a circulation pump motor of 40kw and a filter motor of 4kw. After using a Y-type cross-flow filter element, it only needed a 4kw filter pump, which greatly reduced energy consumption.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is the structural principle diagram of the existing T-type flow filter element;

[0017] Figure 2 This is a structural principle diagram of the Y-type inclined hole single-flow cross-flow filter element of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the flow direction in the punch-out force analysis;

[0019] Figure 4 This is a structural schematic diagram of the combination of the filter element, the filter element filtering outer tube and the filter element connecting end of the technical solution. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that terms such as "lateral", "inner", "surface", "bottom", "between", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] See also Figure 1-4As shown, a Y-shaped oblique hole one-way cross-flow filter element of the utility model is fixedly installed transversely in the filter outer tube of the filter element;

[0023] The filter element adopts a tubular membrane, at least one of which is installed in the filter outer tube of the filter element, and oblique holes are distributed on the surface of the membrane, and the oblique holes and the flow direction of the filter element are arranged in a Y-shaped layout; in this specific embodiment, if three are used and arranged in parallel, the corresponding tubular membrane is made of materials belonging to the prior art, such as PE material, PTFE material, etc.; the diameter of the oblique holes is 0.1 to 1 micron; the oblique holes can be arranged at equal intervals or unequal intervals on the surface of the membrane, presenting countless microscopic shapes, mainly highlighting the relationship between the oblique arrangement of the holes and the flow direction, so it is not easy to form clogging of particles;

[0024] The filtered stock solution flows from one end of the filter element to the other end, and the angle β between the inclined hole and the flow direction of the filtered stock solution in the filter element is less than 90°; in this specific embodiment, it is specifically 60°.

[0025] Both ends of the filter element filter outer tube are provided with filter element connection ends connected to the filter element, a cavity is formed between the filter element and the filter element filter outer tube, and a filter element liquid outlet connected to the cavity is provided at the bottom of the filter element filter outer tube.

[0026] In addition to the above-mentioned advantages of flushing the filtered material, the Y-type inclined hole single-flow cross-flow filter element also forms a reverse angle between the flow directions of the filtered liquid and the filtered liquid, making it easier for the filtered liquid to flush away the filter residue accumulated on the surface of the filter element outlet orifice at the same flow rate; Figure 2-3 As shown, this can be easily seen from the mechanical principle of water flow. When the angle is β, the main flow scouring force of the filtered liquid at this point on the filter residue is the main flow scouring force multiplied by cosβ, and the angle between the main flow and the filtrate in the T-type cross-flow filter element is 90°, and cos90° is 0, so the force of the T-type cross-flow filter element to flush out the filter residue is 0, while the Y-type cross-flow filter element at this point on the filter residue is cosβ, β<90°; in this way, the scouring force of the filtered liquid on the filter cake is greater than the accumulation pressure of the filtered liquid on the filter cake, and finally it makes it more difficult for the filter cake to continue to accumulate on the surface of the filter element. In fact, at this time, the Y-type inclined hole single-flow cross-flow filtration process has entered an idealized equilibrium state. That is, the filtered liquid, the filtered liquid, and the filtered solids (filter cake) form a dynamic balance on the surface of the filter element. At this time, the flow rate of the filtered liquid is balanced; the flow rate is much lower than the flow rate of the T-type cross flow, the accumulation of the filter cake is basically zero, and the flow rate of the filtered liquid is balanced. After reaching this equilibrium state, theoretically, the filter element no longer needs backwashing and can continue to filter the filtered liquid;

[0027] A plurality of tubular filter membranes with inclined holes are used as the filter element body and fixed in the filter pipe, as shown in 2-4. The filtered liquid flows into the filter pipe from one end where the filter hole of the filter element has an angle and flows out from the other end. It must be noted that the filtered liquid can only flow in from the end where the filter hole of the filter element has an angle β<90°; if the flow direction is wrong, it will be counterproductive.

[0028] Since the flushing force of the Y-type cross-flow filter element on the filter residue at this point is cosβ, β<90°, the flow rate and flow of the cross-flow flushing liquid are greatly reduced during normal filtration. Compared with the ordinary T-type cross-flow filter element, it is not easy to clog, has a large filtration flow, low filtration pressure, and is more energy-saving; the system motor power is reduced by 10 times; it has a good protective effect on sensitive liquids in the biopharmaceutical industry. For example: a company originally used an ordinary T-type cross-flow filter element filter that required a 40kw circulation pump motor and a 4kw filter motor, but after using a Y-type cross-flow filter element filter, it only needs a 4kw filter pump, and the circulation and filtration are combined together.

[0029] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A Y-shaped oblique hole one-way cross-flow filter element, which is fixedly installed transversely in the filter outer tube of the filter element, characterized in that: The filter element adopts a tubular membrane, at least one of which is installed in the filter outer tube of the filter element, and oblique holes are distributed on the surface of the membrane, and the oblique holes and the flow direction of the filter element are arranged in a Y shape; The filtered raw liquid flows from one end of the filter element to the other end, and the angle β between the inclined hole and the flow direction of the filtered raw liquid in the filter element is less than 90°.

2. A Y-shaped oblique hole one-way cross-flow filter element according to claim 1, characterized in that: The diameter of the inclined hole is 0.1 to 1 micron.

3. A Y-shaped oblique hole one-way cross-flow filter element according to claim 1, characterized in that: The two ends of the filter element filtering outer tube are provided with filter element connecting ends connected to the filter element, a cavity is formed between the filter element and the filter element filtering outer tube, and a filter element liquid outlet connected to the cavity is provided at the bottom of the filter element filtering outer tube.

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