Ceramic filter

Abstract

The utility model discloses a kind of ceramic filter machines. The utility model discloses a kind including body, cylindrical slurry tank, ceramic filter assembly, driving mechanism and cleaning mechanism, the ceramic filter assembly is installed in the inside of slurry tank, is driven to complete solid-liquid separation by driving mechanism rotation, the cleaning mechanism includes the ultrasonic vibration plate of being set in slurry tank inner wall, vibration plate can be radially telescopic and form high-frequency vibration field on filter plate surface, to carry out in situ ultrasonic cleaning to ceramic filter plate. The device does not need to disassemble filter plate or stop when washing, can realize online automatic cleaning, significantly improve the continuous operation ability and production efficiency of filter machine;Meanwhile, using non-contact ultrasonic cleaning mode, avoid the ceramic filter plate abrasion problem caused by mechanical scraping, effectively prolong the service life of equipment. The utility model structure design is reasonable, convenient operation is applicable to solid-liquid separation equipment in the field such as mineral processing, chemical industry, sludge dewatering etc.

Description

Technical Field

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

[0002] Ceramic filters are widely used in industries such as mineral processing, chemical processing, metallurgy, and sludge dewatering. These devices typically achieve solid-liquid separation by driving a rotating drum to rotate in a slurry, allowing the filtrate to pass through the filter surface and form a filter cake on the surface.

[0003] For example, Chinese patent CN2756297Y discloses a ceramic filter for fine coal slime recovery. It has a base with a fine coal slime liquid tank at the bottom. The tank contains a level controller and negative pressure collection tanks at both ends. One side of each tank has a fixed negative pressure connection component, and the other side has a vacuum pump pipe connected to a vacuum pump. The base is equipped with a coal slime recovery rotor, which consists of a main shaft, multi-stage ceramic filter discs, a discharge plate, multiple sections of outlet pipes, a pipe support plate, and a moving negative pressure connection component. The rotor is located within the fine coal slime liquid tank. The ceramic filter discs are composed of multiple ceramic cavity microporous plates, which are connected along the same axis via the outlet pipes.

[0004] While the aforementioned technologies have achieved certain results in continuous filtration and filtrate recovery, they still have shortcomings in terms of filter plate surface clogging (filter cake accumulation) and cleaning. Existing devices typically rely on mechanical scrapers, backwashing, removal of the plates from the cleaning tank after unloading, or external cleaning tanks for cleaning. These methods often require shutdown or interruption of partial production capacity, limiting cleaning efficiency and thoroughness. Furthermore, mechanical contact (such as scrapers) or high-pressure backwashing can sometimes cause wear to the ceramic filter plates or shorten their service life.

[0005] Therefore, a ceramic filter is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings by providing a ceramic filter.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a ceramic filter, comprising a filter body, the filter body including a main motor and a fixing block, the fixing block being cuboid in shape, having an internal groove forming a slurry tank, a rotating drum installed inside the slurry tank, a transmission assembly installed between the main motor and the rotating drum forming a transmission connection, ceramic filter plates evenly installed on the outer end of the rotating drum, an ultrasonic cleaning module installed on the inner wall surface of the slurry tank, the ultrasonic cleaning module including a base, an electric push rod and an ultrasonic vibrating plate, the base being fixedly installed on the inner wall of the slurry tank, one end of the electric push rod being installed inside the base, and the other end of the electric push rod being connected to the ultrasonic vibrating plate.

[0008] The transmission assembly includes a coupling and a transmission shaft. One end of the transmission shaft is connected to the output end of the main motor, and the other end of the transmission shaft is connected to the central shaft of the rotating drum. The transmission shaft is used to drive the rotating drum to rotate.

[0009] The ultrasonic transducer plate has its vibrating surface facing the ceramic filter plate. The ultrasonic transducer plate is used to generate high-frequency vibrations to remove filter residue and impurities adhering to the surface of the ceramic filter plate.

[0010] Multiple ultrasonic cleaning modules are arranged along the axial direction of the slurry tank.

[0011] The telescopic stroke of the electric push rod is matched with the maximum distance from the base to the outer end of the rotating drum.

[0012] The slurry tank has a slurry inlet at one end near the main motor and a slurry outlet at the bottom of the slurry tank. The slurry outlet is used to discharge residual slurry and impurities during the cleaning or filtration process.

[0013] The beneficial effects of this utility model are reflected in: 1. This utility model has an ultrasonic cleaning module installed on the inner wall of the slurry tank. The electric push rod in the module can drive the ultrasonic vibrating plate to extend radially to a position close to the surface of the ceramic filter plate. The vibrating plate generates cavitation effect and micro-jet through high-frequency ultrasonic vibration, thereby realizing online, in-situ, non-contact powerful cleaning of filter residue and impurities on the surface of the ceramic filter plate. No manual disassembly or machine shutdown is required, which significantly improves the automation level and continuous operation capability of the filter machine.

[0014] 2. The ultrasonic transducer maintains a small gap between its vibrating surface and the ceramic filter plate. It uses the high-frequency vibration energy transmitted by the liquid medium to remove dirt without generating mechanical friction or impact, thus avoiding wear and micro-cracks on the surface of the ceramic filter plate, improving the service life of the filter plate, and maintaining its high permeability and filtration efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a cross-sectional view of the slurry tank structure of this utility model.

[0016] In the picture: 1. Filter body; 2. Main motor; 3. Slurry tank; 301. Base; 302. Electric push rod; 303. Ultrasonic vibrating plate; 304. Slurry inlet; 4. Rotary drum; 401. Ceramic filter plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1-3 This utility model discloses a ceramic filter, including a filter body 1. The filter body 1 includes a main motor 2 and a fixing block. The fixing block is rectangular and has an internal groove forming a slurry tank 3. The slurry tank 3 is modified into a cylindrical internal cavity structure. The diameter and length of the internal cavity are designed according to the actual filtration scale. For example, the internal cavity diameter can be 0.3-1.5 m and the length can be 0.6-3.0 m. The specific dimensions can be adjusted according to the production capacity and the size of the ceramic filter plate 401 to facilitate the installation of the rotating drum 4 and the cleaning module, and to ensure slurry circulation and operating space.

[0019] Furthermore, the rotating drum 4 is mounted on the central axis of the cylindrical slurry tank 3. The rotating drum 4 has a cylindrical structure, and several ceramic filter plates 401 are evenly installed on its outer circumference. The ceramic filter plates 401 are made of porous ceramic material, and their dimensions match the outer diameter and filtration area of ​​the rotating drum 4. The filter plates are fixed to the rotating drum 4 or secured by snap-fit ​​devices to ensure stability during rotation and facilitate replacement. The main motor 2 is connected to the rotating drum 4 through a transmission assembly, which includes a coupling and a drive shaft. One end of the drive shaft is connected to the output end of the main motor 2, and the other end is connected to the central shaft of the rotating drum 4. The main motor 2 drives the drive shaft to rotate the rotating drum 4 at a set speed. The speed can be set according to the filtration process, and the commonly used speed range is 1 to 30 rpm.

[0020] Furthermore, an ultrasonic cleaning module is installed on the inner or outer support structure of the cylindrical slurry tank 3. The ultrasonic cleaning module consists of a base 301, an electric push rod 302, and an ultrasonic transducer 303. The base 301 is fixedly installed on the inner wall of the cylindrical slurry tank 3 or on a support opened on the inner wall. The material of the base 301 should preferably be corrosion-resistant and wear-resistant stainless steel or composite material to ensure stability during long-term immersion in the slurry environment. The base 301 contains a mounting seat and a seal for fixing the electric push rod 302. The seal is made of chemically corrosion-resistant rubber or polytetrafluoroethylene to prevent slurry from seeping into the interior of the base 301.

[0021] The electric actuator 302 is a controllable telescopic actuator. It can be an electric lead screw type actuator or a sealed hydraulic or pneumatic actuator, with the electric actuator 302 being preferred for precise stroke control. One end of the electric actuator 302 is installed inside the base 301, and the other end is connected to the ultrasonic transducer 303. The vibrating surface of the ultrasonic transducer 303 faces the ceramic filter plate 401. The transducer is connected to the driver via an ultrasonic transducer, which converts electrical energy into high-frequency mechanical vibration. The high-frequency vibration generated by the transducer acts on the surface of the ceramic filter plate 401 to remove adhering filter residue and impurities.

[0022] Furthermore, to achieve online, in-situ cleaning of all ceramic filter plates 401 on the rotating drum 4, multiple ultrasonic cleaning modules are arranged along the axial direction of the cylindrical slurry tank 3 along the rotating drum 4. The stroke of the electric push rod 302 of each module should match the maximum radial distance from the base 301 to the outer end of the rotating drum 4, ensuring that the vibrating plate can extend radially and come close to the surface of the ceramic filter plate 401. The reserved radial gap can be set to 0.5–5 mm. After cleaning, the electric push rod 302 drives the vibrating plate to automatically retract into the base 301, ensuring that the normal filtration process is not affected.

[0023] Furthermore, the slurry tank 3 has a slurry inlet 304 at one end near the main motor 2 for supplying the slurry to be filtered into the slurry tank 3. The bottom of the slurry tank 3 has a slurry outlet for discharging residual slurry and impurities during filtration or cleaning. The slurry outlet can be connected to valves and discharge pipelines, and can also be connected to a slurry recovery system or a wastewater treatment system.

[0024] Furthermore, a control box is installed on the outer wall or support mechanism of the slurry tank 3. The control box is electrically connected to the main motor 2, each electric push rod 302, ultrasonic driver, solenoid valve, sensors, etc. The control box has a built-in programmable controller or embedded control unit to realize functions such as rotating drum 4, arranging cleaning processes, ultrasonic drive and push rod stroke control, slurry inlet and outlet control, and fault monitoring. To ensure safe and accurate operation, the system is equipped with several sensors: speed sensor, position limit sensor, liquid level sensor, temperature sensor, etc. The control box can also be equipped with a human-machine interface for parameter setting, real-time display, and manual intervention.

[0025] With the above structural configuration, the main motor 2 drives the rotating drum 4 to rotate via the transmission shaft. The ceramic filter plate 401 installed on the outer periphery of the rotating drum 4 rotates in the slurry. The filtrate seeps out through the pores of the ceramic filter plate 401, and solid particles are retained on the outer surface of the ceramic filter plate 401 to form a filter cake layer, thus completing the solid-liquid separation filtration function. The control box drives the electric push rod 302 to make the ultrasonic vibrating plate 303 extend radially from the inner wall of the cylinder or the base 301 and move precisely to a position that maintains a predetermined radial gap with the surface of the ceramic filter plate 401. The position limit sensor or encoder provides real-time feedback of position information to ensure that the vibrating plate does not contact the filter plate and avoids mechanical impact damage.

[0026] After the ultrasonic driver is activated, the transducer converts the high-frequency electrical signal into mechanical vibration, which is transmitted to the filter plate surface via the vibrating plate. The high-frequency vibration generates tiny cavitation bubbles at the liquid interface, which collapse at high speed, producing instantaneous high shear force and micro-jets. This breaks down the attached filter cake, sludge, etc., thereby removing contaminants from the ceramic filter plate 401 and suspending them in the slurry. Simultaneously, the vibration also helps to break down adhered materials and promote their removal. The advantage of ultrasonic cleaning is that it can efficiently remove stubborn contaminants without mechanical friction or high-pressure rinsing, and it does not contact the filter plate surface, reducing the risk of damage. After the ultrasonic cleaning for the set time is completed, the ultrasonic drive is stopped, and the vibrating plate is automatically retracted into the base 301 by the electric push rod 302, restoring it to its original protective state. If necessary, the control system can trigger slurry discharge or short-term high-speed rotation to carry suspended impurities to the discharge port. The system then returns to normal filtration operation.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] Additionally, "multiple" refers to two or more.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ceramic filter, comprising a filter body (1), the filter body (1) including a main motor (2) and a fixing block, the fixing block being cuboid in shape, having an internal groove forming a slurry tank (3), a rotating drum (4) installed inside the slurry tank (3), and a transmission assembly being installed between the main motor (2) and the rotating drum (4) to form a transmission connection, characterized in that, A ceramic filter plate (401) is uniformly installed on the outer end of the rotating drum (4). An ultrasonic cleaning module is installed on the inner wall surface of the slurry tank (3). The ultrasonic cleaning module includes a base (301), an electric push rod (302), and an ultrasonic vibrating plate (303). The base (301) is fixedly installed on the inner wall of the slurry tank (3). One end of the electric push rod (302) is installed inside the base (301), and the other end of the electric push rod (302) is connected to the ultrasonic vibrating plate (303).

2. The ceramic filter according to claim 1, characterized in that: The transmission assembly includes a coupling and a transmission shaft. One end of the transmission shaft is connected to the output end of the main motor (2), and the other end of the transmission shaft is connected to the central axis of the rotating drum (4). The transmission shaft is used to drive the rotating drum (4) to rotate.

3. The ceramic filter according to claim 1, characterized in that: The ultrasonic transducer (303) is positioned with its vibrating surface facing the ceramic filter plate (401). The ultrasonic transducer (303) is used to generate high-frequency vibrations to remove filter residue and impurities adhering to the surface of the ceramic filter plate (401).

4. A ceramic filter according to claim 3, characterized in that: Multiple ultrasonic cleaning modules are arranged along the axial direction of the slurry tank (3).

5. A ceramic filter according to claim 1, characterized in that: The telescopic stroke of the electric push rod (302) is matched with the maximum distance from the base (301) to the outer end of the rotating cylinder (4).

6. A ceramic filter according to claim 1, characterized in that: The slurry tank (3) has a slurry inlet (304) at one end near the main motor (2), and a slurry outlet is provided at the bottom of the slurry tank (3). The slurry outlet is used to discharge residual slurry and impurities during the cleaning or filtration process.

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