Inorganic ceramic filtering device for sewage treatment

Abstract

The utility model discloses an inorganic ceramic filtering device for sewage treatment, which relates to the technical field of sewage filtering treatment, and comprises a shell, a ceramic membrane tube and a supporting piece, the supporting piece comprises a first supporting plate and a second supporting plate, the first supporting plate is arranged at the bottom of the shell, and the first supporting plate and the shell are enclosed to form a lower sewage cavity; the second supporting plate is arranged at the upper part of the shell, the second supporting plate and the shell are enclosed to form an upper sewage cavity, and a water outlet cavity is formed between the first supporting plate and the second supporting plate; two ends of a ceramic membrane tube respectively penetrate through the first supporting plate and the second supporting plate and are communicated with the upper sewage cavity and the lower sewage cavity; the lower sewage cavity is communicated with a water inlet pipe; the water inlet pipe is connected with a sewage source; the upper sewage cavity is communicated with a circulating pipe, and one end, far away from the upper sewage cavity, of the circulating pipe is communicated with the water inlet pipe; and the water outlet cavity is communicated with a water outlet. The sewage filtering device has the advantages of high sewage filtering efficiency and good filtering effect.

Description

Technical Field

[0001] The utility model relates to the field of sewage filtration treatment technology, in particular to an inorganic ceramic filter device for sewage treatment. Background Art

[0002] Inorganic ceramic filter device is a filter device with inorganic ceramic membrane as filter element. It is often used in the field of sewage treatment to further filter sewage. When sewage flows through the inorganic ceramic membrane, water molecules can pass through the inorganic ceramic membrane, while impurities are blocked, thereby achieving sewage filtration.

[0003] Existing ceramic membrane filtration devices primarily use ceramic membrane tubes as filter elements. Sewage flows through the tubes, and under the influence of internal pressure, water seeps out from the tube's periphery. The concentrated sewage within the tubes continues to flow and is discharged through the filtration device's sewage outlet. In these filtration devices, the sewage's residence time in the tubes is limited, and both the filtration effect and efficiency are limited by the tube's length. In actual production, the limited length of ceramic membrane tubes makes it difficult to meet sewage filtration requirements, necessitating the use of multiple devices in series, increasing sewage treatment costs. Summary of the Invention

[0004] The purpose of the utility model is to provide an inorganic ceramic filtering device for sewage treatment, which has the advantages of high sewage filtering efficiency and good filtering effect.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] The utility model provides an inorganic ceramic filter device for sewage treatment, the inorganic ceramic filter device comprising a shell, a ceramic membrane tube and a support member, the support member being detachably fixed in the shell, and the ceramic membrane tube being fixed to the support member;

[0007] The support member includes a first support plate and a second support plate, the first support plate is arranged at the bottom of the shell and encloses the shell to form a lower sewage chamber, the second support plate is arranged at the upper part of the shell and encloses the shell to form an upper sewage chamber, and a water outlet chamber is formed between the first support plate and the second support plate; the two ends of the ceramic membrane tube pass through the first support plate and the second support plate respectively and are connected to the upper sewage chamber and the lower sewage chamber;

[0008] The lower sewage chamber is connected to a water inlet pipe, which is connected to a sewage source; the upper sewage chamber is connected to a circulation pipe, and one end of the circulation pipe away from the upper sewage chamber is connected to the water inlet pipe; the water outlet chamber is connected to a water outlet.

[0009] Furthermore, a first stop valve is provided on the water inlet pipe, and a second stop valve is provided on the circulation pipe. The second stop valve is located on a side of the first stop valve away from the shell.

[0010] Furthermore, a connecting pipe section is provided at one end of the water inlet pipe away from the shell, and a third stop valve is provided on the connecting pipe section.

[0011] Furthermore, the connecting pipe section is respectively connected to the sewage inlet pipe and the cleaning water pipe, the sewage inlet pipe is used to connect to the sewage source, and the cleaning water pipe is used to connect to the cleaning water source; at least one valve is provided on each of the sewage inlet pipe and the cleaning water pipe.

[0012] Furthermore, the first support plate includes an outer support shell and a ceramic membrane plate, the outer support shell is fixed in the shell, the ceramic membrane plate is installed in the outer support shell, the bottom end of the ceramic membrane tube is fixed to the outer support shell, and a plurality of water filtering holes are opened on the outer support shell.

[0013] Furthermore, the outer support shell includes a bottom plate, an outer support ring and a top plate, the outer support ring is coaxially fixed to the inner wall of the shell, the bottom plate is fixed to the lower side of the outer support ring, and the top plate is fixed to the upper side of the outer support ring; the ceramic diaphragm plate is clamped between the bottom plate and the top plate.

[0014] Furthermore, the first support plate is provided with a relief opening that fits with the ceramic membrane tube, and the relief opening passes through the top plate and the ceramic membrane plate; and a plurality of water outlets are provided in an area of ​​the bottom plate facing the relief opening.

[0015] Furthermore, a sealing ring is embedded in the outer support ring, and the inner ring of the sealing ring is sleeved outside the ceramic diaphragm plate.

[0016] Furthermore, the support member also includes a middle support plate, which is located between the first support plate and the second support plate, and the outer peripheral side of the middle support plate abuts against the middle inner wall of the shell, and the middle support plate is configured to allow water to flow through.

[0017] Furthermore, the second support plate seals the upper sewage chamber and the water outlet chamber.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. In the present invention, when the inorganic ceramic filter device is used for sewage filtration, sewage from the sewage source enters the lower sewage chamber from the water inlet pipe. After the sewage in the lower sewage chamber is filled with sewage, the sewage enters the ceramic membrane tube and flows upward under the action of pressure. The water that permeates the ceramic membrane tube (i.e., the filtered water) enters the water outlet chamber and is discharged from the water outlet. The remaining concentrated sewage flows into the upper sewage chamber and flows into the water inlet pipe again from the circulation pipe to mix with the sewage flowing into the sewage source. Under the action of the water pressure of the sewage source, it enters the shell again for circulation filtration, thereby improving the filtration effect of the sewage, improving the filtration efficiency, and making the filtered product material more enriched;

[0020] 2. A first stop valve is provided on the water inlet pipe, and a second stop valve is provided on the circulation pipe, and the second stop valve is located on the side of the first stop valve away from the housing (i.e., when the first stop valve is closed, it will not affect the connection between the circulation pipe and the water inlet pipe). Therefore, when the first stop valve is open, sewage can enter the housing from the water inlet pipe and flow from bottom to top to achieve filtration; when the first stop valve is closed and the second stop valve is open, sewage from the sewage source can enter the upper sewage chamber through the circulation pipe and flow from top to bottom to achieve filtration. In this way, the filtration mode can be selected according to actual needs, thereby improving the applicability of the filtration device;

[0021] 3. The end of the water inlet pipe away from the shell is connected with a connecting pipe section, which is connected to the sewage source and the cleaning water source through the sewage inlet pipe and the cleaning water pipe respectively. By adjusting the valves on the sewage inlet pipe and the cleaning water pipe, the water inlet pipe can be switched between being connected to the cleaning water pipe and the sewage inlet pipe; therefore, when it is necessary to clean the filter device, the first stop valve and the valve on the sewage inlet pipe are closed, and the valve on the cleaning water pipe and the second stop valve are opened. The cleaning water can flow through the circulation pipe to the upper sewage chamber and flow from top to bottom to clean the shell and the ceramic membrane tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of an inorganic ceramic filter device for sewage treatment according to an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the vertical cross-sectional structure of an inorganic ceramic filter device according to one embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the system structure of the inorganic ceramic filter device of one embodiment of the present utility model when in use.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the first support plate of an embodiment of the present utility model.

[0026] Figure 5 It is a schematic diagram of the exploded structure of the first support plate of an embodiment of the present utility model.

[0027] Figure 6 It is a schematic diagram of the vertical cross-sectional structure of the first support plate of an embodiment of the present utility model.

[0028] In the picture:

[0029] 1000, inorganic ceramic filter device; 100, housing; 110, lower sewage chamber; 111, water inlet; 120, upper sewage chamber; 121, circulating water outlet; 130, water outlet chamber; 131, water outlet; 200, ceramic membrane tube; 300, support member; 310, first support plate; 311, outer support shell; 3111, bottom plate; 3112, outer support ring; 3113, top plate; 3114, water outlet; 3115, sealing ring; 3116, water filter hole ; 312, ceramic diaphragm plate; 313, avoidance port; 320, second support plate; 330, middle support plate; 400, water inlet pipe; 410, first stop valve; 420, sewage outlet; 430, sewage valve; 440, connecting pipe section; 450, third stop valve; 500, sewage source; 510, sewage inlet pipe; 600, circulation pipe; 610, second stop valve; 700, cleaning water source; 710, cleaning water pipe; 800, air pressure source; 810, compressed air pipe. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] This embodiment discloses an inorganic ceramic filter device 1000 for sewage treatment, referring to Figure 1 and Figure 2 The inorganic ceramic filter device 1000 includes a housing 100 , a ceramic membrane tube 200 and a support member 300 . The support member 300 is detachably fixed in the housing 100 , and the ceramic membrane tube 200 is fixed to the support member 300 .

[0032] The support member 300 includes a first support plate 310 and a second support plate 320. The first support plate 310 is disposed at the bottom of the housing 100 and encloses the housing 100 to form a lower sewage chamber 110. The second support plate 320 is disposed at the top of the housing 100 and encloses the housing 100 to form an upper sewage chamber 120. A water outlet chamber 130 is formed between the first support plate 310 and the second support plate 320. The ends of the ceramic membrane tube 200 pass through the first support plate 310 and the second support plate 320, respectively, and are connected to the upper sewage chamber 120 and the lower sewage chamber 110.

[0033] Combine Figures 1 to 3The lower sewage chamber 110 has a water inlet 111 at its bottom. Below this inlet 111, a water inlet pipe 400 is connected to a sewage source 500. The upper sewage chamber 120 has a circulating water outlet 121, which is connected to a circulating pipe 600. The end of the circulating pipe 600, away from the upper sewage chamber 120, is connected to the water inlet pipe 400. The outlet chamber 130 has a water outlet 131.

[0034] When the inorganic ceramic filter device 1000 is used for sewage filtration, sewage from the sewage source 500 enters the lower sewage chamber 110 from the water inlet pipe 400. After the sewage in the lower sewage chamber 110 is filled with sewage, the sewage enters the ceramic membrane tube 200 and flows upward under the action of pressure. After the water permeates the ceramic membrane tube 200 and completes the filtration, it enters the water outlet chamber 130 and is discharged from the water outlet 131. The remaining concentrated sewage flows into the upper sewage chamber 120 and flows into the water inlet pipe 400 again from the circulation pipe 600 to mix with the sewage flowing in from the sewage source 500. Under the action of the water pressure of the sewage source 500, it enters the housing 100 again for circulation filtration, thereby improving the filtration effect of the sewage, improving the filtration efficiency, and making the filtered product material more enriched;

[0035] A first stop valve 410 is provided on the water inlet pipe 400, and a second stop valve 610 is provided on the circulation pipe 600. The second stop valve 610 is located on the side of the first stop valve 410 away from the housing 100, so that when the first stop valve 410 is closed, it does not affect the connection between the circulation pipe 600 and the water inlet pipe 400. Therefore, when the first stop valve 410 is open, sewage can enter the housing 100 from the water inlet pipe 400 and flow from bottom to top to achieve filtration. When the first stop valve 410 is closed and the second stop valve 610 is open, sewage from the sewage source 500 can enter the upper sewage chamber 120 through the circulation pipe 600 and flow from top to bottom to achieve filtration. This allows the filtration method to be selected according to actual needs, improving the applicability of the filtration device.

[0036] A drain outlet 420 is provided at the lower end of the water inlet pipe 400. A drain valve 430 is provided at the drain outlet 420 to control the opening or closing of the drain outlet 420. The drain outlet 420 allows filtered impurities to be discharged and also serves as a drainage device when cleaning the inorganic ceramic filter device 1000.

[0037] A connecting pipe section 440 is provided at one end of the water inlet pipe 400 away from the housing 100. A third shut-off valve 450 is provided on the connecting pipe section 440. The connecting pipe section 440 can be connected to the sewage source 500 to introduce sewage into the water inlet pipe 400. The third shut-off valve 450 controls the connection and closing of the connecting pipe section 440.

[0038] In this embodiment, the connecting pipe section 440 is connected to the sewage inlet pipe 510 and the cleaning water pipe 710, respectively. The sewage inlet pipe 510 is used to connect to the sewage source 500, and the cleaning water pipe 710 is used to connect to the cleaning water source 700. Each of the sewage inlet pipe 510 and the cleaning water pipe 710 is provided with at least one valve, and each of the sewage source 500 and the cleaning water source 700 is provided with at least one water pump. By adjusting the valves on the sewage inlet pipe 510 and the cleaning water pipe 710, the water inlet pipe 400 can be switched between connecting to the cleaning water pipe 710 and the sewage inlet pipe 510. Therefore, when the filter device needs to be cleaned, the first shut-off valve 410 and the valve on the sewage inlet pipe 510 are closed, and the valve on the cleaning water pipe 710 and the second shut-off valve 610 are opened. The cleaning water can flow through the circulation pipe 600 to the upper sewage chamber 120 and then flow from top to bottom to clean the housing 100 and the ceramic membrane tube 200.

[0039] Furthermore, connecting pipe section 440 is connected to a compressed air pipe 810, which is connected to air pressure source 800 and is equipped with an air circuit valve. When sewage in inorganic ceramic filter device 1000 needs to be discharged, first shut-off valve 410 can be closed, second shut-off valve 610 and drain valve 430 can be opened, and the valves on the wash water pipe 710 and sewage inlet pipe 510 can be closed. The air circuit valve on compressed air pipe 810 is opened, and compressed air from air pressure source 800 enters upper sewage chamber 120 through water inlet pipe 400 and circulation pipe 600, thereby discharging any sewage remaining in housing 100 through drain valve 430. This facilitates the discharge of material from the inorganic ceramic membrane filter device and facilitates the inspection and cleaning of the filter device.

[0040] Reference Figures 4 to 6 In this embodiment, the first support plate 310 includes an outer support shell 311 and a ceramic diaphragm plate 312. The outer support shell 311 is fixed to the bottom of the housing 100, and the ceramic diaphragm plate 312 is installed within the outer support shell 311. The bottom end of the ceramic diaphragm tube 200 is fixed to the outer support shell 311. The outer support shell 311 is provided with a plurality of water filtering holes 3116, allowing sewage to flow through the ceramic diaphragm plate 312 and be filtered by the ceramic diaphragm plate 312 before entering the water outlet chamber 130.

[0041] The outer support shell 311 includes a bottom plate 3111, an outer support ring 3112, and a top plate 3113. The outer support ring 3112 is coaxially fixed to the inner wall of the housing 100 and can be detachably connected to the housing 100 by bolting, snapping, or other methods. The bottom plate 3111 is fixed to the underside of the outer support ring 3112, and the top plate 3113 is fixed to the upper side of the outer support ring 3112. The ceramic diaphragm plate 312 is sandwiched between the bottom plate 3111 and the top plate 3113, and water filter holes 3116 are provided on the bottom plate 3111 and the top plate 3113.

[0042] As a result, as sewage flows upward through the filter, the water in the lower sewage chamber 110 is filtered under pressure through the ceramic membrane plate 312 before entering the outlet chamber 130, further improving sewage filtration efficiency. Furthermore, after the sewage source 500 is shut off and the inorganic ceramic filter device 1000 is no longer in use, the water in the outlet chamber 130 can, under the action of gravity, seep into the lower sewage chamber 110 and be discharged through the bottom drain port 420, preventing water accumulation in the outlet chamber 130 and causing sanitary problems.

[0043] The first support plate 310 is provided with a bypass opening 313 that mates with the ceramic membrane tube 200. The bypass opening 313 extends through the top plate 3113 and the ceramic membrane plate 312 (i.e., the top plate 3113 and the ceramic membrane plate 312 have aligned circular openings, which together form the bypass opening 313). The number and size of the bypass openings 313 are the same as the number and size of the ceramic membrane tubes 200, and the lower ends of the ceramic membrane tubes 200 are inserted into the bypass openings 313. The bottom plate 3111 is provided with multiple water outlets 3114 in the area opposite the bypass openings 313, allowing sewage in the lower sewage chamber 110 to flow smoothly into the ceramic membrane tube 200.

[0044] In this embodiment, a sealing ring 3115 is embedded in the outer support ring 3112. The inner ring of the sealing ring 3115 is sleeved over the ceramic diaphragm plate 312. The sealing ring 3115 seals the gap between the outer support ring 3112 and the ceramic diaphragm plate 312, preventing sewage from directly entering the water outlet chamber 130. Preferably, a sealing member such as a sealing ring 3115 is also provided between the lower end of the ceramic diaphragm tube 200 and the avoidance opening 313 to prevent unfiltered sewage from directly entering the water outlet chamber 130, thereby ensuring effective filtration.

[0045] Reference Figure 2 In this embodiment, the support member 300 further includes a central support plate 330, which is located between the first support plate 310 and the second support plate 320. The outer periphery of the central support plate 330 abuts against the central inner wall of the housing 100. The ceramic diaphragm tube 200 passes through the central support plate 330. The central support portion supports the ceramic diaphragm tube 200 in the middle of the housing 100, preventing the ceramic diaphragm tube 200 from shaking and improving its stability.

[0046] One, two or more middle support plates 330 can be arranged in parallel, and can be specifically arranged according to the length of the ceramic membrane tube 200. In this embodiment, it is specifically shown in the manner of setting one middle support plate 330.

[0047] The middle support plate 330 is configured to allow water to flow through, that is, a through hole may be provided on the middle support plate 330 , or the middle support plate 330 may be made of inorganic ceramics so that the middle support plate 330 does not block the water outlet cavity 130 .

[0048] In this embodiment, the second support plate 320 is made of a watertight material, such as plastic or stainless steel. This allows the second support plate 320 to seal the upper sewage chamber 120 and the outlet chamber 130. This prevents concentrated sewage in the upper sewage chamber 120 from entering the outlet chamber 130 and contaminating the filtered water. Preferably, a sealing strip can be provided around the outer periphery of the second support plate 320 to seal the gap between the second support plate 320 and the housing 100. A sealing member can also be provided between the second support plate 320 and the ceramic membrane tube 200 to seal the gap.

[0049] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. An inorganic ceramic filter device for sewage treatment, characterized in that: The inorganic ceramic filter device comprises a housing (100), a ceramic membrane tube (200) and a support member (300), wherein the support member (300) is detachably fixed in the housing (100), and the ceramic membrane tube (200) is fixed to the support member (300); The support member (300) comprises a first support plate (310) and a second support plate (320), wherein the first support plate (310) is arranged at the bottom of the shell (100) and encloses the shell (100) to form a lower sewage chamber (110), and the second support plate (320) is arranged at the upper part of the shell (100) and encloses the shell (100) to form an upper sewage chamber (120), and a water outlet chamber (130) is formed between the first support plate (310) and the second support plate (320); both ends of the ceramic membrane tube (200) pass through the first support plate (310) and the second support plate (320) respectively and are connected to the upper sewage chamber (120) and the lower sewage chamber (110); The lower sewage chamber (110) is connected to a water inlet pipe (400), and the water inlet pipe (400) is connected to a sewage source (500); the upper sewage chamber (120) is connected to a circulation pipe (600), and one end of the circulation pipe (600) away from the upper sewage chamber (120) is connected to the water inlet pipe (400); the water outlet chamber (130) is connected to a water outlet (131).

2. The inorganic ceramic filter device according to claim 1, characterized in that: The water inlet pipe (400) is provided with a first stop valve (410), and the circulation pipe (600) is provided with a second stop valve (610), wherein the second stop valve (610) is located on a side of the first stop valve (410) away from the housing (100).

3. The inorganic ceramic filter device according to claim 1, wherein: A connecting pipe section (440) is provided at one end of the water inlet pipe (400) away from the housing (100), and a third stop valve (450) is provided on the connecting pipe section (440).

4. The inorganic ceramic filter device according to claim 3, characterized in that: The connecting pipe section (440) is respectively connected to a sewage inlet pipe (510) and a cleaning water pipe (710); the sewage inlet pipe (510) is used to connect to a sewage source (500), and the cleaning water pipe (710) is used to connect to a cleaning water source (700); at least one valve is provided on each of the sewage inlet pipe (510) and the cleaning water pipe (710).

5. The inorganic ceramic filter device according to claim 1, wherein: The first support plate (310) comprises an outer support shell (311) and a ceramic membrane plate (312); the outer support shell (311) is fixed in the housing (100); the ceramic membrane plate (312) is installed in the outer support shell (311); the bottom end of the ceramic membrane tube (200) is fixed to the outer support shell (311); and a plurality of water filtering holes (3116) are provided on the outer support shell (311).

6. The inorganic ceramic filter device according to claim 5, characterized in that: The outer support shell (311) comprises a bottom plate (3111), an outer support ring (3112) and a top plate (3113); the outer support ring (3112) is coaxially fixed to the inner wall of the shell (100); the bottom plate (3111) is fixed to the lower side of the outer support ring (3112); and the top plate (3113) is fixed to the upper side of the outer support ring (3112); and the ceramic diaphragm plate (312) is sandwiched between the bottom plate (3111) and the top plate (3113).

7. The inorganic ceramic filter device according to claim 6, characterized in that: The first support plate (310) is provided with a relief opening (313) that fits with the ceramic membrane tube (200), and the relief opening (313) passes through the top plate (3113) and the ceramic membrane plate (312); the bottom plate (3111) is provided with a plurality of water outlets (3114) in an area facing the relief opening (313).

8. The inorganic ceramic filter device according to claim 6, wherein: A sealing ring (3115) is embedded in the outer support ring (3112), and the inner ring of the sealing ring (3115) is sleeved outside the ceramic diaphragm plate (312).

9. The inorganic ceramic filter device according to claim 1, wherein: The support member (300) further includes a middle support plate (330), the middle support plate (330) being located between the first support plate (310) and the second support plate (320), the outer peripheral side of the middle support plate (330) being in contact with the middle inner wall of the shell (100), and the middle support plate (330) being configured to allow water to flow through.

10. The inorganic ceramic filter device according to claim 1, wherein: The second support plate (320) seals the upper sewage chamber (120) and the water outlet chamber (130).

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