Plate filter

Abstract

The utility model discloses a plate filter which comprises a cover body and a support body, a filter cavity is defined by the cover body and the support body, the filter membrane is arranged in the filter cavity, the cover body is provided with an exhaust port and a liquid inlet which are communicated with the filter, a liquid outlet is formed in the bottom of the support body, filtrate enters the filter cavity through the liquid inlet, is filtered by the filter membrane and then flows out of the liquid outlet, and the top of the filter cavity is obliquely arranged from top to bottom. Filtrate enters the filtering cavity from the liquid inlet, air in the filtering cavity is extruded along with the increase of the height of the filtrate, and bubbles are discharged from the exhaust port, so that the generated bubbles are collected in the filtering process. Bubbles are discharged through the exhaust port, so that the filter membrane is prevented from being in contact with the bubbles, the influence on the filter membrane is avoided, bubbles are prevented from being accumulated in filtrate, and the filtering efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, and particularly relates to a plate filter. Background Art

[0002] A flat plate filter is a filter that uses a chemical-resistant material in the liquid contact part and is commonly used for precision filtration and sterilization filtration. Existing flat plate filters are generally made of stainless steel and perform poorly in terms of chemical resistance. With the development of precision filtration, the requirements for filtration in many industries are getting higher and higher, including filtration accuracy, pressure resistance, acid and alkali corrosion resistance, drug resistance, etc.

[0003] In the filters of the prior art, a filter membrane support plate is arranged on the upper shell and the lower shell. A filter membrane and a sealing ring are placed on the filter membrane support plate, and then the upper cover and the lower support are clamped by bolts. During the filtration process, air bubbles are likely to accumulate in the filtrate, resulting in a decrease in filtration efficiency and affecting the filtration effect. Summary of the Utility Model

[0004] Therefore, the purpose of the utility model is to provide a plate filter to solve the problem that air bubbles are likely to accumulate in the filtrate in the prior art, resulting in low filtration efficiency and affecting the filtration effect.

[0005] To solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A plate filter includes: a cover body and a support body; an exhaust port and a liquid inlet are arranged on the cover body; the cover body is covered on the support body, and a filtration chamber is formed by enclosing the lower end surface of the cover body and the upper end surface of the support body. The exhaust port and the liquid inlet are both communicated with the filtration chamber, a liquid discharge port communicated with the filtration chamber is arranged at the bottom of the support body, and the top of the filtration chamber is inclined from top to bottom.

[0007] According to some embodiments of the utility model, the plate filter further includes a filtration component, and the filtration component is arranged in the filtration chamber to be suitable for separating the filtration chamber into a first chamber and a second chamber. The exhaust port and the liquid inlet are communicated with the first chamber, and the liquid discharge port is communicated with the second chamber.

[0008] According to some embodiments of the utility model, the filtration component includes a perforated plate, a filter membrane and a sealing ring which are arranged in sequence from bottom to top. The outer edge of the lower end surface of the perforated plate abuts against the support body, the sealing ring is arranged between the perforated plate and the cover body, the sealing ring is suitable for fixing the filter membrane on the perforated plate, and the outer edge of the upper end surface of the perforated plate is hermetically connected with the outer edge of the cover body through the sealing ring.

[0009] According to some embodiments of the present utility model, a plurality of filter holes are formed in the porous plate, and the plurality of filter holes are evenly spaced along the circumferential and radial directions, and the filter holes are adapted to communicate the first cavity and the second cavity.

[0010] According to some embodiments of the present utility model, the height of the communication interface between the exhaust port and the first cavity is higher than the height of the communication interface between the liquid inlet and the first cavity.

[0011] According to some embodiments of the present utility model, the bottom of the cover body is recessed upward to form a first groove, and the upper end surface of the filter assembly and the first groove enclose the first cavity, and the bottom of the first groove is arranged as an inclined surface from top to bottom.

[0012] According to some embodiments of the present utility model, the upper end surface of the support body is recessed downward to form a second groove, and the lower end surface of the filter assembly and the second groove enclose the second cavity, and the bottom of the second groove is arranged as an inclined surface from top to bottom in a direction from the side far away from the liquid discharge port to the side close to the liquid discharge port.

[0013] According to some embodiments of the present utility model, the components in contact with the filtrate are all made of polytetrafluoroethylene material, or a polytetrafluoroethylene layer is provided at the part in contact with the filtrate.

[0014] According to some embodiments of the present utility model, a plurality of flow guiding columns are arranged in the second groove, and the flow guiding columns enclose a flow guiding channel, and the filtrate is adapted to flow along the flow guiding channel in the direction of the liquid inlet, and the flow guiding channel is arranged as an inclined surface from top to bottom in a direction from the side of the liquid discharge port to the side close to the liquid discharge port.

[0015] According to some embodiments of the present utility model, the plate type filter further includes a fixing assembly, and the fixing assembly includes a first fixing plate, a second fixing plate and a sealing fastener. The first fixing plate is arranged on the upper end of the cover body, the second fixing plate is arranged on the lower end of the support body, and the sealing fastener is adapted to fix the cover body and the support body between the first fixing plate and the second fixing plate.

[0016] The technical solution of the present utility model has the following advantages:

[0017] The plate filter provided by the present utility model has a cover body and a support body enclosing to form a filtration chamber. A filter membrane is placed in the filtration chamber. The cover body is provided with an exhaust port and a liquid inlet communicating with the filter. The bottom of the support body is provided with a liquid discharge port. The filtrate enters the filtration chamber through the liquid inlet, and after being filtered by the filter membrane, it flows out from the liquid discharge port. The top of the filtration chamber is inclined from top to bottom. Thus, during the process of introducing the filtrate, the filtrate enters the filtration chamber through the liquid inlet. As the height of the filtrate increases, the air in the filtration chamber is squeezed, and the bubbles are discharged from the exhaust port to achieve the discharge of the generated bubbles during the filtration process. The bubbles are discharged through the exhaust port, thereby preventing the filter membrane from contacting the bubbles, avoiding affecting the filter membrane, and also preventing the accumulation of bubbles in the filtrate to improve the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the plate filter provided in some embodiments of the present utility model;

[0020] Figure 2 Exploded view of the structure of the plate filter provided in some embodiments of the present utility model;

[0021] Figure 3 Overall cross-sectional view of the plate filter provided in some embodiments of the present utility model;

[0022] Figure 4 Cross-sectional view of the cover body of the plate filter provided in some embodiments of the present utility model;

[0023] Figure 5 Cross-sectional view of the support body of the plate filter provided in some embodiments of the present utility model;

[0024] Figure 6 Top view of the support body of the plate filter provided in some embodiments of the present utility model;

[0025] Figure 7 Top view of the porous plate of the plate filter provided in some embodiments of the present utility model.

[0026] Description of the reference numerals: 1. Cover body; 2. Support body; 3. Fixing component; 4. Filter component; 11. Liquid inlet; 12. Exhaust port; 13. First groove; 21. Second groove; 22. Liquid discharge port; 211. Flow guiding column; 31. First fixing plate; 32. Second fixing plate; 33. Sealing fastener; 41. Porous plate; 42. Sealing ring; 43. Filter membrane; 411. Filter hole. Detailed implementation manners

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Referring to Figures 1 to 3 As shown in the figure, the present utility model provides a plate filter, comprising: a cover body 1 and a support body 2. An exhaust port 12 and a liquid inlet 11 are provided on the cover body 1. The cover body 1 is covered on the support body 2. A filter cavity is formed by enclosing the lower end surface of the cover body 1 and the upper end surface of the support body 2. Both the exhaust port 12 and the liquid inlet 11 are communicated with the filter cavity. A liquid discharge port 22 communicated with the filter cavity is provided at the bottom of the support body 2. The top of the filter cavity is inclined from top to bottom.

[0032] Specifically, the cover body 1 and the support body 2 enclose to form a filtration chamber, the filter membrane 43 is placed in the filtration chamber, the cover body 1 is provided with an exhaust port 12 and a liquid inlet 11 communicated with the filter, and the bottom of the support body 2 is provided with a liquid discharge port 22. The filtrate enters the filtration chamber through the liquid inlet 11, and after being filtered by the filter membrane 43, it flows out from the liquid discharge port 22. The top of the filtration chamber is inclined from top to bottom, so that during the process of introducing the filtrate, the filtrate enters the filtration chamber through the liquid inlet 11. As the height of the filtrate increases, the air in the filtration chamber is squeezed, and the bubbles are discharged from the exhaust port 12, so as to discharge the generated bubbles during the filtration process. The bubbles are discharged through the exhaust port 12, thus avoiding the contact between the filter membrane 43 and the bubbles, avoiding the influence on the filter membrane 43, and at the same time avoiding the accumulation of bubbles in the filtrate, so as to improve the filtration efficiency.

[0033] It can be understood that when too many filtration bubbles accumulate in the filtrate, it will cause the filter membrane 43 to be damaged. In addition, a large resistance is formed in the filtrate, reducing the filtration efficiency. By arranging the top of the filtration chamber to be inclined from top to bottom, the bubbles rise to the top during the filtration process, realizing the discharge of the bubbles during the filtration process. The bubbles are discharged through the exhaust port 12 to avoid the accumulation in the filtrate and affecting the integrity of the filter membrane 43, and improve the filtration efficiency.

[0034] Refer to Figure 3 As shown, in some embodiments of the present utility model, the plate-type filter further includes a filtration component 4. The filtration component 4 is arranged in the filtration chamber to be adapted to divide the filtration chamber into a first cavity and a second cavity. The exhaust port 12 and the liquid inlet 11 are communicated with the first cavity, and the liquid discharge port 22 is communicated with the second cavity.

[0035] Specifically, the filtration component 4 is placed in the filtration chamber, and the filtration component 4 is adapted to filter the filtrate. The filtrate flows in from the liquid inlet 11, enters the first cavity, and after being filtered by the filtration component 4, flows into the second cavity, and then flows out from the liquid discharge port 22 communicated with the second cavity to realize filtration.

[0036] It should be noted that first, the filtrate is introduced into the liquid inlet 11 so that the filtrate fills the entire first cavity until the filtrate flows out from the exhaust port 12. Subsequently, the exhaust port 12 is closed, the liquid discharge port 22 is opened, and the filtrate is continuously introduced into the liquid inlet 11 so that the filtrate flows through the first cavity, the filtration component 4, and the second cavity in sequence and flows out from the liquid discharge port 22. It can be understood that before filtration, by filling the entire filtration chamber with the filtrate, and since the top of the filtration chamber is inclined, there will be no accumulation of bubbles in the filtration chamber, avoiding the influence of the bubbles on the filter membrane 43, and thus improving the filtration efficiency.

[0037] Refer to Figure 2As shown, in some embodiments of the present utility model, the filter assembly 4 includes a porous plate 41 and a sealing ring 42 arranged in sequence from bottom to top. The outer edge of the lower end surface of the porous plate 41 abuts against the support body 2, the sealing ring 42 is arranged between the porous plate 41 and the cover body 1, and the outer edge of the upper end surface of the porous plate 41 is hermetically connected to the outer edge of the cover body 1 through the sealing ring 42.

[0038] Specifically, the porous plate 41 is suitable for supporting the filter membrane 43. Under the extrusion of the outer edge of the lower end surface of the cover body 1, the sealing ring 42 fixes the filter membrane 43 on the porous plate 41. The setting of the sealing ring 42 improves the sealing performance between the cover body 1 and the support body 2 to ensure the sealing of the filter cavity and avoid leakage of the filtrate. It can be understood that the sealing ring 42 is made of PTFE (polytetrafluoroethylene). In addition, the components in contact with the filtrate, such as the cover body 1, the support body 2, and the porous plate 41, are all made of PTFE (polytetrafluoroethylene), which improves the material strength, avoids contact between the filtrate and metal, and avoids contamination of the filtrate.

[0039] It can be understood that in some embodiments of the present utility model, for the components in contact with the filtrate, the main body part is made of metal, and a polytetrafluoroethylene layer is provided at the part in contact with the filtrate to isolate the filtrate.

[0040] It can be understood that PFA (perfluoroalkoxy alkane) pipe joints are threadedly connected to the liquid inlet 11, the liquid outlet 22, and the exhaust port 12.

[0041] Specifically, the lower edge of the cover body 1 is in an arc structure to be hermetically connected to the sealing ring 42 in an arc shape, thereby improving the sealing performance.

[0042] Refer to Figure 7 As shown, in some embodiments of the present utility model, a plurality of filter holes 411 are formed in the porous plate 41, and the plurality of filter holes 411 are evenly spaced along the circumferential and radial directions. The filter holes 411 are suitable for communicating the first cavity and the second cavity.

[0043] Specifically, the porous plate 41 is used to support the filter membrane 43 and simultaneously achieve secondary filtration. A plurality of filter holes 411 are formed in the porous plate 41 so that the filtrate flows from the first cavity through the filter holes 411 into the second cavity. The setting of the filter holes 411 realizes secondary filtration to improve the filtration effect.

[0044] In some embodiments of the present utility model, the height of the communication interface between the exhaust port 12 and the first cavity is higher than the height of the communication interface between the liquid inlet 11 and the first cavity.

[0045] Specifically, before filtration, the liquid discharge port 22 is closed, and filtrate is introduced from the liquid inlet port 11, so that the gas in the filtration chamber is discharged from the exhaust port 12. As the filtrate is introduced, since the height of the communication interface between the exhaust port 12 and the first chamber is higher than the height of the communication interface between the liquid inlet port 11 and the first chamber, the gas in the filtration chamber will eventually be completely discharged as the height of the filtrate rises, thereby avoiding the accumulation of air bubbles in the filtration chamber and preventing the air bubbles from affecting the filter membrane 43.

[0046] Referring to Figure 4 As shown, in some embodiments of the present invention, the bottom of the cover body 1 is recessed upward to form a first groove 13, and the upper end surface of the filter assembly 4 and the first groove 13 enclose a first chamber. The bottom of the first groove 13 is arranged as an inclined surface from top to bottom.

[0047] Specifically, the bottom of the first groove 13 is arranged as an inclined surface from top to bottom, and the inclination angle is 5 - 20 degrees. Preferably, the angle is 10 degrees.

[0048] Referring to Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the upper end surface of the support body 2 is recessed downward to form a second groove 21, and the lower end surface of the filter assembly 4 and the second groove 21 enclose a second chamber. The bottom of the second groove 21 is arranged as an inclined surface from top to bottom along the side away from the liquid discharge port 22 towards the side close to the liquid discharge port 22.

[0049] In some embodiments of the present invention, the liquid discharge port 22 is located in the middle of the support body 2, and the second groove 21 has a funnel-shaped structure.

[0050] Specifically, the setting of the second groove 21 is beneficial to the caching of the filtrate after filtration. The bottom of the second groove 21 is arranged as an inclined surface from top to bottom along the side away from the liquid discharge port 22 towards the side close to the liquid discharge port 22, facilitating the flow of the filtrate towards the liquid discharge port 22 to improve the liquid discharge efficiency and ensure the filtration efficiency.

[0051] It can be understood that the liquid discharge port 22 is provided in the middle of the support body 2, that is, the second groove 21 is arranged obliquely along the radial direction from the outer edge towards the central axis, having a funnel-shaped structure. The inclination angle is set to 3 - 10 degrees. Preferably, the inclination angle is 5 degrees.

[0052] Referring to Figure 5 and Figure 6 As shown, in some embodiments of the present invention, a plurality of guide posts 211 are provided in the second groove 21, and the guide posts 211 enclose a guide channel. The filtrate is adapted to flow along the guide channel towards the liquid inlet port 11, and the guide channel is arranged obliquely from top to bottom along the side away from the liquid discharge port 22 towards the side close to the liquid discharge port 22.

[0053] Specifically, a number of flow guiding columns 211 are formed in the second groove 21. The flow guiding columns 211 enclose to form a flow guiding channel. The filtered filtrate flows along the flow guiding channel towards the liquid inlet 11 to improve the aggregation efficiency.

[0054] Specifically, the sealing fastener 33 is a sealing bolt. The sealing fastener 33 realizes the sealed connection of the cover body 1, the filter assembly 4 and the support body 2, thereby avoiding the leakage of the filtrate.

[0055] In some embodiments of the present invention, the plate filter further includes a fixing assembly 3. The fixing assembly 3 includes a first fixing plate 31, a second fixing plate 32 and a sealing fastener 33. The first fixing plate 31 is arranged at the upper end of the cover body 1, the second fixing plate 32 is arranged at the lower end of the support body 2, and the sealing fastener 33 is adapted to fix the cover body 1 and the support body 2 between the first fixing plate 31 and the second fixing plate 32.

[0056] Specifically, the sealing fastener 33 is a sealing bolt. The first fixing plate 31 and the second fixing plate 32 are connected by the sealing fastener 33 to be adapted to seal and fix the cover body 1 and the support body 2 to avoid the leakage of the filtrate.

[0057] It can be understood that the first fixing plate 31 and the second fixing plate 32 are made of metal. A bracket is provided at the bottom of the second fixing plate 32. The first fixing plate 31 and the second fixing plate 32 can be connected by means of threaded connection or adhesive.

[0058] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A plate filter, characterized in that: include: A cover body (1), wherein the cover body (1) is provided with an exhaust port (12) and a liquid inlet (11); A support body (2), the cover body (1) is covered on the support body (2), the lower end surface of the cover body (1) and the upper end surface of the support body (2) enclose a filter chamber, the exhaust port (12) and the liquid inlet (11) are both connected to the filter chamber, the bottom of the support body (2) is provided with a liquid discharge port (22) connected to the filter chamber, and the top of the filter chamber is inclined from top to bottom.

2. The plate filter according to claim 1, characterized in that: The invention also comprises a filter assembly (4), wherein the filter assembly (4) is arranged in the filter cavity so as to be suitable for dividing the filter cavity into a first cavity and a second cavity, the exhaust port (12) and the liquid inlet (11) are connected to the first cavity, and the liquid discharge port (22) is connected to the second cavity.

3. The plate filter according to claim 2, characterized in that: The filter assembly (4) comprises a porous plate (41), a filter membrane (43) and a sealing ring (42) which are arranged in sequence from bottom to top. The outer edge of the lower end surface of the porous plate (41) is in contact with the support body. The sealing ring (42) is arranged between the porous plate (41) and the cover body (1). The sealing ring (42) is suitable for fixing the filter membrane (43) on the porous plate (41). The outer edge of the upper end surface of the porous plate (41) is sealed and connected to the outer edge of the cover body (1) through the sealing ring (42).

4. The plate filter according to claim 3, characterized in that: The porous plate (41) is provided with a plurality of filter holes (411), the plurality of filter holes (411) are evenly spaced in the circumferential direction and the radial direction, and the filter holes (411) are suitable for connecting the first cavity and the second cavity.

5. The plate filter according to claim 2, characterized in that: The height of the communication interface between the exhaust port (12) and the first cavity is higher than the height of the communication interface between the liquid inlet (11) and the first cavity.

6. The plate filter according to claim 2, characterized in that: The bottom of the cover body (1) is recessed upward to form a first groove (13); the upper end surface of the filter assembly (4) and the first groove (13) are enclosed to form the first cavity; the bottom of the first groove (13) is arranged in an inclined surface from top to bottom.

7. The plate filter according to claim 2, characterized in that: The upper end surface of the support body (2) is recessed downward to form a second groove (21); the lower end surface of the filter assembly (4) and the second groove (21) are enclosed to form the second cavity; the bottom of the second groove (21) is arranged in an inclined surface from top to bottom along a side away from the liquid discharge port (22) toward a side close to the liquid discharge port (22).

8. The plate filter according to claim 1, characterized in that: All parts in contact with the filtrate are made of polytetrafluoroethylene, or The part in contact with the filtrate is provided with a polytetrafluoroethylene layer.

9. The plate filter according to claim 7, characterized in that: A plurality of guide columns (211) are arranged in the second groove (21), and the guide columns (211) enclose a guide channel, and the filtrate is suitable for flowing along the guide channel in the direction of the liquid inlet (11), and the guide channel is arranged along a side of the liquid discharge port (22) toward a side close to the liquid discharge port (22), and is inclined from top to bottom.

10. The plate filter according to claim 1, characterized in that: The invention also comprises a fixing assembly (3), wherein the fixing assembly (3) comprises a first fixing plate (31), a second fixing plate (32) and a sealing fastener (33), wherein the first fixing plate (31) is arranged at the upper end of the cover body (1), and the second fixing plate (32) is arranged at the lower end of the support body (2), and the sealing fastener (33) is suitable for fixing the cover body (1) and the support body (2) between the first fixing plate (31) and the second fixing plate (32).

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