CN103638733A - Ceramic disc type filter - Google Patents

Abstract

The invention provides a ceramic disc filter, comprising: a white water tank, a ceramic filter disc, a hollow collecting pipe and a driving device, a part of the ceramic filter disc is immersed in the white water tank, and the ceramic filter disc is composed of several fan-shaped ceramic filter units along the circumferential direction Arranged, each ceramic filter unit is hollow, with several micro-filtration holes arranged on the ceramic filter unit, the hollow collection pipe runs through the central axis of the ceramic filter disc, and the hollow chamber of the ceramic filter disc It communicates with the inner chamber of the hollow collecting pipe; the driving device is connected with the ceramic filter disc to drive the ceramic filter disc to rotate around its axial direction. The invention has the advantages of good filtering effect, reasonable configuration, stable operation and low cost.

Description

Ceramic disc filter

technical field

The invention relates to a white water treatment device in the papermaking industry, in particular to a ceramic disc filter used in the white water treatment device in the papermaking industry.

Background technique

With the increasing scarcity of water resources and the increasing demand for industrial water, the recycling of treated wastewater has become an important part of water environmental protection projects. Especially in the field of papermaking, water resources have become a key factor hindering the development of the papermaking industry and a core issue for the survival and development of enterprises.

Since papermaking enterprises are large water users, the amount of circulating white water is large. With the recycling of waste paper, there are more and more fine fibers in the white water, and the turbidity of the white water is increasing. General methods such as coagulation sedimentation and disc filter are used to recover White water, with a high concentration of white water, is reused in the production of spray screens, which has a great impact on production and high cost, resulting in a large amount of clean water and a large amount of sewage treatment; especially the low concentration of white water in toilet paper, the amount of white water produced per ton of paper is large, regardless of the use of the above Which method, the treatment cost is high, and the white water treatment effect is not ideal, resulting in the discharge of excess white water to the sewage treatment plant, wasting a lot of water resources, and bringing great negative pressure to the environment.

In view of the many shortcomings of the above-mentioned existing test devices and evaluation methods for evaluating screen pipes, the technical designers based on years of research, field experience and professional knowledge, combined with actual use conditions and structural technical requirements, actively improved and innovated, in order to achieve A ceramic disc filter with good filtering effect, reasonable configuration, stable operation and low cost.

Contents of the invention

The object of the present invention is to provide a ceramic disc filter with good filtering effect, reasonable configuration, stable operation and low cost.

In order to achieve the above object, the present invention proposes a ceramic disc filter, comprising: a white water tank, one side of the white water tank is provided with a water inlet; a ceramic filter disc, a part of which is immersed in the white water tank, and the ceramic filter The disk is formed by arranging several fan-shaped ceramic filter units along the circumferential direction. Each ceramic filter unit is hollow, and the bottom end of the ceramic filter unit is open, and the top end is closed. Several micro-filtration holes, the micro-filtration holes penetrate from the outer surface of the ceramic filter unit to the hollow chamber of the ceramic filter unit; the hollow collection pipe is arranged on the central axis of the ceramic filter disc, and each of the The ceramic filter units are arranged circumferentially along the outer wall of the hollow collection pipe, and the bottom openings of each of the ceramic filter units correspond to the filter holes on the outer wall of the hollow collection pipe respectively, and the ceramic filter discs The hollow chamber communicates with the inner cavity of the hollow collecting pipe; the driving device is connected with the ceramic filter disc and drives the ceramic filter disc to rotate around its axial direction.

The ceramic disc filter as described above, wherein the ceramic disc filter also includes a pulping mechanism, and the pulping mechanism includes:

The water spray pipe is arranged above the white water tank and adjacent to the position of the ceramic filter plate, and the water spray port of the water spray pipe faces the exposed ceramic filter plate above the white water tank;

a sledge board, which is arranged obliquely downward under the water spray pipe, and the sledge board extends outward toward the side of the white water tank, which is inclined downward;

The slurry chute is arranged outside the white water trough, and the extended end of the slurry chute is placed above the slurry chute.

The above-mentioned ceramic disc filter, wherein the pore size of the micro-filtration holes is 4nm-1000μm.

The above-mentioned ceramic disc filter, wherein a liquid level regulating baffle is vertically arranged in the white water tank near the water inlet.

The above-mentioned ceramic disc filter, wherein the ceramic filter unit includes a support body, a transition layer and a separation layer arranged in sequence from inside to outside.

The ceramic disc filter as described above, wherein the ceramic filter disc is supported and fixed by a support and fixation device, and the support and fixation device includes:

A plurality of steel fan ribs are radially arranged on the hollow collecting pipe, and accommodating grooves are respectively arranged on both sides of the steel fan ribs, and the sides of the ceramic filter unit are accommodated in the accommodating grooves ;

A plurality of top clips, the top clips have a C-shaped clip slot, the C-shaped clip slots of each top clip are respectively snapped on the top of the corresponding steel fan ribs, and the top clips face The two sides are extended and pressed on the ceramic filter unit on both sides of the top clip, and the top clip is connected to the steel fan frame by bolts;

A rubber sealing strip is plugged between the accommodating groove of the steel fan frame and the side of the ceramic filter unit.

The above-mentioned ceramic disc filter, wherein, the steel fan frame is H-shaped steel.

The above-mentioned ceramic disc filter, wherein, the top clamping part is C-shaped steel.

The above-mentioned ceramic disc filter, wherein a rubber sealing ring is provided at the junction of the bottom opening of the ceramic filter unit and the corresponding filter hole of the hollow collecting tube.

The above-mentioned ceramic disc filter, wherein, the fan-shaped ceramic filter unit is integrally formed or formed by butting an upper fan-shaped block and a lower fan-shaped block.

Compared with the prior art, the present invention has the following characteristics and advantages:

1. The ceramic filter disc of the present invention has corrosion resistance, high temperature resistance, high mechanical strength, no harmful substance elution, and no secondary pollution. Under the action of fluid pressure, the micro filter holes are not deformed, easy to clean and regenerate, and have a long service life , can replace the existing filter materials such as cotton cloth, silk fabric, plastic, metal mesh, asbestos wadding, etc.

2. The equipment of the present invention is easy to maintain and has low labor costs.

3. The present invention is small in size, and can ensure a large filtering area with a small footprint, saving space.

4. The invention has reasonable configuration, stable operation and low processing cost.

Description of drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to help the understanding of the present invention, and do not specifically limit the shapes and proportional dimensions of the components in the present invention. Under the teaching of the present invention, those skilled in the art can select various possible shapes and proportional dimensions according to specific conditions to implement the present invention.

Fig. 1 is the structural representation of ceramic disc filter of the present invention;

Fig. 2 is the structural representation of ceramic filter unit of the present invention;

Fig. 3 is the structural representation of the upper sector of the ceramic filter unit of the present invention;

Fig. 4 is a schematic diagram of the structure in direction A of Fig. 3;

Fig. 5 is the schematic structural view of the lower fan-shaped block of the ceramic filter unit of the present invention;

Fig. 6 is a schematic diagram of the structure in direction B of Fig. 5;

Fig. 7 is a schematic structural view of the supporting and fixing device of the present invention;

Fig. 8 is a schematic structural view of the top clip of the supporting and fixing device of the present invention;

Fig. 9 is a schematic cross-sectional structure diagram of the combination of the top clip and the steel fan frame of the supporting and fixing device of the present invention.

Explanation of reference signs:

1-White tank; 11-Water inlet; 12-Sewage outlet; 13-Liquid level adjustment baffle;

2-ceramic filter disc; 21-ceramic filter unit; 22-hollow chamber; 23-bottom; 24-top; 25-support body; 26-transition layer; 27-separation layer; Lower sector block;

3-hollow collection pipe; 4-stripping mechanism; 41-water spray pipe; 42-pulp board; 43-pulp tank;

5-support fixing device; 51-steel fan frame; 52-top clip; 53-rubber sealing strip; 54-accommodating groove; 55-bolt.

Detailed ways

The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention.

Please refer to Fig. 1 to Fig. 9, Fig. 1 is the structural representation of ceramic disc filter of the present invention; Fig. 2 is the structural representation of ceramic filter unit of the present invention; Fig. 3 is the structure of the upper sector block of ceramic filter unit of the present invention Schematic diagram; Fig. 4 is a schematic diagram of the structure in the direction of A in Fig. 3; Fig. 5 is a schematic diagram of the structure of the lower sector of the ceramic filter unit of the present invention; Fig. 6 is a schematic diagram of the structure in the direction of B in Fig. 5; Fig. 7 is a supporting and fixing device of the present invention Fig. 8 is a schematic structural view of the top clip of the support and fixing device of the present invention; Fig. 9 is a schematic cross-sectional structure diagram of the combination of the top clip of the support and fixing device of the present invention and the steel fan frame.

As shown in Figure 1, the ceramic disc filter of the present invention includes a white water tank 1, a ceramic filter disc 2, a hollow collecting pipe 3 and a driving device (not shown in the figure), and one side of the white water tank 1 is provided with a water inlet 11 , the bottom of which is provided with a sewage outlet 12; the ceramic filter disc 2 is disc-shaped, a part of which is immersed in the white water tank 1, and the other part is higher than the upper surface of the white water tank 1 and exposed above the white water tank 1, and the ceramic filter disc 2 passes through The driving device connected with it rotates around its axis. The ceramic filter disc 2 is formed by arranging several fan-shaped ceramic filter units 21 along the circumferential direction, each ceramic filter unit 21 is hollow, and as shown in Figures 2 to 6, the bottom 23 of the ceramic filter unit 21 is open, Its top 24 is closed to form a hollow chamber 22 with one side open, which is used to accommodate the permeate filtered by the ceramic filter unit 21 . Several microfiltration holes (not shown in the figure) are arranged on the ceramic filter unit 21, and the microfiltration holes penetrate from the outer surface of the ceramic filter unit 21 to the hollow chamber 22 of the ceramic filter unit 21. In the present invention, the microfiltration The diameter of the pores is 4 nm to 1000 μm. The ceramic filter unit 21 is made of acid-resistant ceramic particles or quartz, corundum sand, etc. as the main raw material, adding a small amount of inorganic binder and zirconia reinforcing agent, etc. It has the characteristics of good filtration effect, high mechanical strength, acid resistance, alkali resistance, high temperature resistance, and strong regeneration ability. The manufacturing method of the ceramic filter unit 21 belongs to the prior art and will not be described in detail here. A hollow collection pipe 3 is provided through the central axis of the ceramic filter disc 2, and each ceramic filter unit 21 is arranged circumferentially along the outer wall of the hollow collection pipe 3, and the bottom openings of each ceramic filter unit 21 correspond to the outer wall of the hollow collection pipe 3 respectively. The filter hole of the pipe body opened above, the hollow chamber 22 of the ceramic filter disc 2 communicates with the inner cavity of the hollow collection pipe 3, so that the permeate in the hollow chamber 22 flows into the inner chamber of the hollow collection pipe 3, and then the filtered Water is exported.

Further, as shown in Figure 1, the ceramic disc filter of the present invention also includes a pulping mechanism, which includes a water spray pipe 41, a slurry plate 42 and a slurry groove 43, and the water spray pipe 41 is arranged on the white One side above the water tank and adjacent to the position of the ceramic filter disc 2, the water nozzle of the water spray pipe 41 faces the ceramic filter disc 2 exposed above the white water tank 1, so that the water nozzle is facing the ceramic filter disc 2 above the white water tank 1, thereby Under the impact of spraying water from the water nozzle, the slurry attached to the outer wall of the ceramic filter disc 2 is peeled off. The slippery plate 42 is arranged obliquely below the water spray pipe 41 downwards, and the slippery plate 42 extends outwards towards the side of the white water tank 1 inclined downward. The extended end of the slurry plate 42 is placed above the slurry chute 43, so that the stripped slurry falls on the slurry chute 42, flows to the slurry chute 43 under the action of gravity, and then is introduced into the slurry tank by the pipeline to realize the slurry discharge. recycle and re-use. In the present invention, the inclination angle of the paddle board 42 can be adjusted according to actual needs, and its specific structure is a prior art, and will not be described in detail here.

Further, as shown in FIG. 1 , a liquid level adjustment baffle 13 is vertically arranged near the water inlet 11 in the white water tank 1 , because the white water needs to turn over the liquid level adjustment baffle 13 and enter the water storage chamber of the white water tank 1 , The height of the liquid level adjustment baffle plate 13 can be adjusted up and down according to actual needs, so as to play the role of adjusting the water intake.

As shown in FIGS. 2 to 6 , the fan-shaped ceramic filter unit 21 is integrally formed or formed by butting an upper fan-shaped block 28 and a lower fan-shaped block 29 . The ceramic filter unit 21 includes a support body 25 , a transition layer 26 and a separation layer 27 arranged in sequence from inside to outside. The support body 25 has a large pore size and high porosity, and a very thin ceramic separation layer 27 with high filtration accuracy is coated and fired on the surface layer of the support body 25 pores, and there is a permeable layer between the support body 25 and the separation layer 27. The transition layer 26 ensures high permeation flux while maintaining the integrity, high separation precision and high strength of the ceramic filter unit 21 . The material of the ceramic filter unit 21 is made of high-purity Al2O3 roasted under high temperature conditions. According to the requirements of filtration accuracy, the filter separation layer 27 is processed and produced with Al2O3, ZrO2 or TiO2. Different fine processing methods can be processed. Filter channels of different sizes can meet different filtering requirements. The ceramic filter unit 21 has good high temperature resistance, chemical corrosion resistance, and excellent mechanical strength.

Further, as shown in FIGS. 7 to 9 , the ceramic filter disc 2 is supported and fixed by a supporting and fixing device 5 , which includes a plurality of steel ribs 51 , a plurality of top clips 52 and rubber sealing strips 53 . A plurality of steel fan ribs 51 are radially arranged on the hollow collecting pipe 3, and accommodating grooves 54 are respectively arranged on both sides of the steel fan ribs 51, and the sides of the ceramic filter unit 21 are accommodated in the accommodating grooves 54, which play a role The role of the fixed ceramic filter unit 21. The top clips 52 have C-shaped slots, and the C-shaped slots of each top clip 52 are buckled on the top of the corresponding steel fan frame 51, and the top clips 52 extend to both sides and are pressed on the top clips. On the ceramic filter unit 21 on both sides of 52, the top clip 52 is connected to the steel fan frame 51 by bolts 55, so that the top clip 52 and the steel fan frame 51 are connected together, and play the role of reinforcing the ceramic filter unit 21. The rubber sealing strip 53 is plugged between the accommodating groove 54 of the steel fan frame 51 and the side of the ceramic filter unit 21. The rubber sealing strip 53 can prevent the turbid and white water from entering the clean water, and avoid the direct contact between the ceramic filter unit 21 and the steel fan frame 51. The contact plays the role of protecting and fixing the ceramic filter unit 21 and preventing the ceramic filter unit 21 from sliding.

In this embodiment, the steel fan frame 51 is H-shaped steel. The top clip 52 is C-shaped steel. Of course, other components with similar structures can also be used, as long as they perform corresponding functions and meet the structural strength requirements.

In addition, a rubber sealing ring is provided at the joint between the bottom opening of the ceramic filter unit 21 and the filter hole of the corresponding hollow collection tube 3 to ensure the ceramic filter unit 21 is in sealing engagement with the hollow collection tube 3 .

The working principle of the present invention is that the pressure difference on both sides of the ceramic filter disc (inner and outer liquid level difference) is used as the driving force, and the ceramic filter disc is used as the filter medium. When white water flows through the surface of the ceramic filter disc under a certain pressure, The uniformly densely distributed many small micro-filtration holes only allow water and small molecular substances to pass through and become permeate, while the substances in the white water whose volume is larger than the micropore diameter of the disk surface are trapped on the liquid inlet side of the filter disk and become concentrated liquid, thereby realizing The purpose of purification, separation and concentration of white water. The concentrate contains fibers that are reused in papermaking.

When the present invention is in use, white water enters the white water tank 1, and the white water turns over the liquid level adjustment baffle 13 and enters the tank body. The liquid level adjustment baffle 13 can adjust the liquid level. Under the action of the liquid level difference, the permeate penetrates into the hollow chamber 22 of the ceramic filter unit 21 through the micro-filtration holes on the surface of the ceramic filter disc 2. When the ceramic filter disc 2 turns to a certain angle, the permeate flows into the hollow collection pipe under the action of gravity 3. The fiber slurry is attached to the surface of the ceramic filter disc 2, and the filtered water is collected into the white water tank by the hollow collecting pipe 3, and then exported to the pool outside the tank to realize the purification treatment of the white water. When the ceramic filter disc 2 was rotated out of the white water tank 1 to a certain height, the water spray pipe 41 of the stripping mechanism 4 sprayed the slurry from the surface of the ceramic filter disc 2, and the slurry flowed to the slippery plate 42 with a certain inclination, and Under the action of gravity, it flows to the slurry chute 43 and is introduced into the slurry pool by the pipeline to realize the recovery function of the slurry concentrate. The invention adopts filtered water as cleaning water, saves many backwashing pools required by traditional filters, simplifies equipment and reduces costs. In the experiment, the SS value of white water for corrugated papermaking decreased from 600 mg/l before using the present invention to 50 mg/l; the SS value of white water for toilet paper making decreased from 500 mg/l before using the present invention to 40 mg/l.

To sum up, the present invention has the advantages of operating at normal temperature, high separation efficiency, simple device, simple operation, control and maintenance, long service life of the filter plate, good quality of treated middle water, and can be used as clean water. The ceramic filter disc is made of Al2O3 porcelain clay, with small gaps, which can reach the micron level according to the nature of the solution, easy to regenerate, and can be recovered by high-pressure washing or back-burning after clogging to a certain extent, without using lye or acid And other chemical substances are removed, and there is no secondary pollution problem.

The purpose of the detailed explanations for the above-mentioned embodiments is only to explain the present invention so as to better understand the present invention. However, these descriptions cannot be construed as limiting the present invention for any reason, especially, in different The various features described in the embodiments can also be combined arbitrarily with each other to form other embodiments. Unless there is an explicit description to the contrary, these features should be understood as being applicable to any embodiment and not limited to the described embodiment. Way.

Claims (10)

1. a Ceramic Disc Filter, is characterized in that, described Ceramic Disc Filter comprises:

Back flow water pump, a side of described back flow water pump is provided with water inlet;

Ceramic filter dish, its part immerses in described back flow water pump, described ceramic filter dish is formed along being circumferentially arranged by several fan-shaped ceramic filter unit, described in each, ceramic filter unit is hollow form, and described ceramic filter unit bottom end opening, its top closure is laid with several microfiltration holes on described ceramic filter unit, and described microfiltration hole connects the hollow chamber to described ceramic filter unit by described ceramic filter unit outer surface;

Hollow collecting pipe, run through on the central shaft that is arranged at described ceramic filter dish, described in each, ceramic filter unit circumferentially arranges along the outer wall of described hollow collecting pipe, and described in each, bottom end opening of ceramic filter unit corresponds respectively to the body filter opening of offering on described hollow collecting pipe outer wall, the intracavity inter-connection of the hollow chamber of described ceramic filter dish and described hollow collecting pipe;

Drive unit, is connected with described ceramic filter dish, drives described ceramic filter to coil its axial rotation.

2. Ceramic Disc Filter as claimed in claim 1, is characterized in that, described Ceramic Disc Filter also comprises stripping pulp grinder structure, and described stripping pulp grinder structure comprises:

Sparge pipe, is arranged at above described back flow water pump and the position of contiguous described ceramic filter dish, and the water jet of described sparge pipe is towards the described ceramic filter dish that exposes described back flow water pump top;

Slip pulpboard, be tilted to down the below that is arranged at described sparge pipe, and described in slip the epitaxial lateral overgrowth towards described back flow water pump of pulpboard under being tilted to and stretch;

Slip stock tank, be arranged at the outside of described back flow water pump, and described in slip the elongated end of pulpboard and slip the top of stock tank described in being placed in.

3. Ceramic Disc Filter as claimed in claim 1 or 2, is characterized in that, the aperture in described microfiltration hole is 4nm～1000 μ m.

4. Ceramic Disc Filter as claimed in claim 1 or 2, is characterized in that, in described back flow water pump, near described water inlet, is vertically provided with liquid level controllable register.

5. Ceramic Disc Filter as claimed in claim 1, is characterized in that, described ceramic filter unit comprises supporting body, transition zone and the separating layer setting gradually from the inside to the outside.

6. Ceramic Disc Filter as claimed in claim 1, is characterized in that, described ceramic filter dish supports fixing by supporting adn fixing device, and described supporting adn fixing device comprises:

A plurality of steel ribs of the fans, are radial and are laid on described hollow collecting pipe, in the both sides of described steel ribs of the fan, are respectively equipped with storage tank, and the side of described ceramic filter unit is placed in described storage tank;

A plurality of tops fastener, described top fastener has C type draw-in groove, described in each, the C type draw-in groove of top fastener is buckled in respectively the top of corresponding described steel ribs of the fan, and described top fastener extends to both sides and is pressed on the described ceramic filter unit of fastener both sides, described top, and described top fastener and described steel ribs of the fan are bolted;

Rubber weather strip, plug is loaded between the storage tank of described steel ribs of the fan and the side of described ceramic filter unit.

7. Ceramic Disc Filter as claimed in claim 6, is characterized in that, described steel ribs of the fan is H shaped steel.

8. Ceramic Disc Filter as claimed in claim 6, is characterized in that, described top fastener is C shaped steel.

9. Ceramic Disc Filter as claimed in claim 1, is characterized in that, the joint of the body filter opening of the described hollow collecting pipe that bottom end opening in described ceramic filter unit is corresponding with it is provided with rubber seal.

10. Ceramic Disc Filter as claimed in claim 1, is characterized in that, described fan-shaped ceramic filter unit is formed in one or is formed by top secter pat and the docking of bottom secter pat.

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