CN102085434B - Hyperboloidal rotating disc dense fiber filtering system - Google Patents

Abstract

The invention discloses a hyperboloidal rotating disc dense fiber filtering system which comprises a pool body (1), a water outlet shaft (6), a driving device (7), a filtering disc (8), a filtering disc cleaning device (9) and a mud discharge pump (10), wherein the water outlet shaft (6) is a hollow hexagonal cylinder with round center and equilateral outside; water holes (6-1) are uniformly arranged on the cylinder of the water outlet shaft (6); the two sides of each water hole (6-1) are provided with support columns (6-2); the support columns (6-2) are embedded into the filtering disc (8) and oppositely fixed on the circumference of the water outlet shaft (6); the filtering disc (8) is formed by splicing six sector discs (8-1) which equally divides the circumference; and the radial section of each disc (8-1) is of a diamond shape of which the upper and lower acute angles are cut off. According to the invention, the filtering area is improved by over 15%, the fineness is improved by about 40%, the treatment capacity of the entire filtering system is increased by over 15%, and the concentrations of effluent suspended matters are less than 5 mg/l; and the entire filtering system has a small floor area and is low in investment and total installed power.

Description

Hyperboloid Rotating Disc Dense Bundle Fiber Filtration System

technical field

The present invention relates to a filter system, especially a filter system for the separation of suspended solids in various liquids, specifically a hyperboloid rotating disk dense bundle fiber suitable for most of the suspended solids required to remove liquids filtering system.

Background technique

At present, the vast majority of sewage and polluted liquids are discharged into sewers or rivers after primary or secondary treatment, and advanced treatment is required for drinking water, landscape water, and green land irrigation. The conventional filters used in the prior art all have the following problems: the filter material of the filter is arranged horizontally, the equipment occupies a large area, the backwashing intensity is high, and the air-water backwashing requires not only high-power water pumps, blowers, Two sets of larger diameter pipe valve systems for air and water. The whole system is complex and complicated, and the investment is high. The automatic control system is extremely large and complex. The water quality of the conventional filter is poor due to the penetration problem before flushing, and the residual cleaning water in the filter layer will affect the effluent after flushing. In addition, the head loss is high, the energy loss is large, and the operating cost is high. Therefore, the existing various filtering devices not only have high cost and large floor space, but also have high processing costs.

There is also a fiber rotary disc filter technology on the market at present, that is, a fiber filter cloth filter composed of multiple vertical filter discs is installed on the horizontal axis. The fiber filter cloth filter also has the following disadvantages:

1. The fiber filter cloth of the fiber filter cloth filter is in a lodging state under the filtering condition, and the lodging state is different, and the fibers form a very tight filtering surface on the surface of the filter disc, and due to the water flow The influence of the filter surface caused by the local area is very loose, resulting in the inhomogeneity of the filtration, the unevenness of the filter surface will cause solid particles to enter the base layer of the fiber layer, and the filter cloth cannot be thoroughly cleaned by the suction device.

2. The filter surface of the filter disc of the fiber filter cloth filter is a plane structure, limited by the surface area of the filter disc, the filter area is limited.

3. The fiber filter cloth filter is only equipped with a filter cloth back-suction device, which can only suck the suspended solids on the surface of the fiber filter layer, and cannot deeply remove the sediments at the fiber roots and the fiber bottom cloth. Increasing sedimentation will rapidly reduce the filter capacity of the filter cloth and increase the head loss of the filter system.

4. The filter tank of the fiber filter cloth filter is only equipped with a mud collecting bucket and a set of mud discharge system. The time of mud discharge and suction of the system is long and uneven, which will easily cause strong turbulence in the water body of the filter tank and affect the filter tank. The effect of sedimentation increases the sludge load of the filter cloth.

5. The mud discharge system of the fiber filter cloth filter and the filter cloth reverse suction device share a set of pipelines. The mud discharge system works for a long time, and the filter cloth reverse suction device works for a short time. Both of them work for a long time at the same time The additional load of the working system increases, reducing the life of the system.

Contents of the invention

The object of the present invention is to address the shortcomings of the existing filtering system, and provide a hyperboloid rotating disk dense-bundle fiber filtering system that expands the range of filtering media, improves filtering fineness and filtering capacity, and reduces investment and operating energy consumption of the filtering system.

The purpose of the present invention is solved by the following technical solutions:

A double-curved disc dense-bundle fiber filtration system includes a pool body, a water outlet shaft, a driving device, a filter disc, a filter disc cleaning device, and a mud discharge pump. The pool body is composed of a filter pool, an ascending chamber and a clear water pool. There is a water inlet on the outer wall, and the filter tank is connected to the ascending chamber through the water hole provided on the inner wall, and the ascending chamber is connected to the clear water pool through an adjustable outlet weir. The bearing seat on the front side and the slewing support on the rear side are fixed in the filter tank. The front end of the water outlet shaft is closed and connected to the water hole. The driving device is installed above the filter tank and connected to the water outlet shaft through a chain. The filter disc is installed on the water outlet shaft. , the filter disc cleaning device is connected with the filter disc, the mud discharge pump is installed above the filter tank and connected with the bottom of the filter tank, the water outlet shaft is an equilateral hexagonal cylinder with a hollow center circle, and the cylinder of the water outlet shaft The water holes are evenly arranged, and the two sides of the water holes are provided with support columns perpendicular to the surface of the water outlet shaft; the support columns are embedded in the filter disc and relatively fixed on the circumference of the water outlet shaft, and the filter disc is divided into two parts. Six fan-shaped discs are spliced together. The radial section of the disc is a rhombus with the upper and lower acute angles cut off. The disc is composed of a filter frame and a dense fiber filter cloth. The dense fiber filter cloth is set on the filter frame; The densely bundled fiber filter cloth is made of bundled fibers folded and woven into the base cloth. The bundled fibers are woven from fibers blended with nylon and acrylic fibers. The diameter is 0.3-2.0 mm.

The obtuse angle of the diamond-shaped section of the disc is 120°-160°.

The filter disc cleaning device includes a reverse suction pump, a spray pump, a connecting pipe, a cleaning head and a fixing device, and the reverse suction pump and the spray cleaning pump are fixed on the upper side of the filter tank and are respectively connected to the cleaning head through a connecting pipe , the cleaning head is fixed on the side of the corresponding filter disc through the fixing device, and the fixing device is fixed on the side wall of the filter tank.

The cleaning head is in a "V" shape, and the cleaning head includes a back suction port and a flushing nozzle, and the flushing nozzle is located on both sides of the back suction port.

The anti-suction port is spindle-shaped, and the diameter of the anti-suction port gradually increases from the water outlet shaft to the edge of the filter disc.

The bottom of the filter tank is provided with two mud pools, the mud pools are cone-shaped, and the mud pools are connected to the mud pump through a connecting pipe.

The chain is made of non-metallic material.

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

1. The hyperboloid filter turntable of the present invention innovatively designs a hyperboloid streamlined filter surface. Under the same configuration, its filter area is increased by more than 15% compared with the traditional flat turntable filter surface area, and the processing capacity of the whole filter system is increased by 15% More than %, the increase of the filter area greatly improves the filter capacity of the system.

2. The densely bundled fiber filter cloth of the hyperboloid filter disc of the present invention is made of bundled fibers folded in half and woven into the base cloth. The bundled fibers are woven from fibers blended with nylon and acrylic fiber. The main advantages of the bundled fibers are Dense fiber floc flowers are formed on the top of the bundled fibers, that is, the surface layer of the dense fiber filter cloth, so that the surface of the dense fiber filter cloth can form a very fine and tight surface filter layer to suspend various solids in the medium At the same time, the gap at the root of the bundled fiber can make the filtrate pass through the dense fiber filter cloth through the gap between the bundled fiber stems and enter the filter cavity to be discharged, which can not only greatly reduce the resistance of the dense fiber filter cloth loss, and can increase the fineness of the filtration system by about 40%; in addition, bundle fibers with different bundle diameters and different lengths can be selected according to different working conditions and water outlet requirements.

3. The filter disc cleaning device of the present invention is equipped with a back suction system and a spray washing system, the back suction system and the spray washing system work alternately, the back suction system sucks the suspended matter on the surface of the dense fiber filter cloth, and the spray nozzle is reused The high-pressure water flow thoroughly washes the fiber roots and the suspended matter in the fiber base cloth, so that the dense fiber filter cloth can be thoroughly washed, and the life of the dense fiber filter cloth is prolonged.

4. The cone-bucket type sludge collection tank of the present invention has a remarkable sludge sedimentation effect, and the effective deposition of sludge at the bottom of the tank reduces the amount of sludge on the filter cloth, which can prolong the service life of the dense fiber filter cloth and reduce The frequency of back suction and spray washing; in addition, the double mud discharge system matched with the cone type sludge collection tank, the sludge discharge is fast and effective, will not cause large water turbulence, and will not affect the sludge sedimentation effect of the filter tank.

5. The hyperboloid rotary disc dense-bundle fiber filtration system of the present invention has the advantages of high separation efficiency, strong filtration continuity, good effluent quality, and stable effluent volume. At the same time, the concentration of suspended solids in the effluent is less than 5 mg/l; the entire filtration system accounts for The land is small, the investment is low, and the total installed power is low.

Description of drawings

Accompanying drawing 1 is the structural representation of hyperboloid rotating disc dense bundle fiber filtration system of the present invention;

Accompanying drawing 2 is the side sectional view of hyperboloid rotating disc dense bundle fiber filtration system of the present invention;

Accompanying drawing 3 is the sectional view of the water outlet shaft and the support column of the hyperboloid rotating disc dense fiber filtration system of the present invention;

Accompanying drawing 4 is the filter disc sectional view of hyperbolic rotating disc dense fiber filter system of the present invention;

Accompanying drawing 5 is the dense bundle fiber filter cloth structure schematic diagram of hyperboloid rotating disk dense bundle fiber filtration system of the present invention;

Accompanying drawing 6 is the structural diagram of the cleaning head of the double-curved disc dense-bundle fiber filtration system of the present invention;

Accompanying drawing 7 is the bottom view of the cleaning head of the hyperboloid rotating disk dense-bundle fiber filtration system of the present invention.

Among them: 1—pool body; 2—filter pool; 2-1—water inlet; 2-2—water hole; 3—rising chamber; 4—clear water pool; 4-1—water outlet; 5—adjustable water outlet Weir; 6—water outlet shaft; 6-1—water hole; 6-2—support column; 7—drive device; 8—filter disc; 8-1—disc; 9—filter disc cleaning device; 10—drain discharge Pump; 11—bearing housing; 12—slewing support; 13—chain; 14—reverse suction pump; 15—spray washing pump; 16—communicating pipe; 17—cleaning head; 2—washing nozzle; 18—fixing device; 19—silt collection tank.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1-4: a double-curved disc dense fiber filtration system, including a pool body 1, a water outlet shaft 6, a driving device 7, a filter disc 8, a filter disc cleaning device 9, a mud discharge pump 10 and an automatic control system The pool body 1 is composed of a filter pool 2, an ascending chamber 3 and a clear water pool 4. The outer wall of the filter pool 2 is provided with a water inlet 2-1, and the filter pool 2 connects with the rising water through the water hole 2-2 provided on the inner wall. The chambers 3 are connected, and the rising chamber 3 communicates with the clear water pool 4 through the adjustable outlet weir 5, which is used to adjust and control the size of the water level drop. The outer wall of the clear water pool 4 is provided with a water outlet 4-1. The water outlet shaft 6 is fixed in the filter tank 2 through the bearing seat 11 on the front side and the rotary support 12 on the rear side, the rotary support 12 is fixed on the boss in the filter tank 2, and the bearing seat 11 is fixed on the water hole 2-2 Around, the front end of the water outlet shaft 6 is inserted into the bearing seat 11 and is closed and connected with the water hole 2-2. The water outlet shaft 6 is an equilateral hexagonal cylinder outside the hollow center circle, and the cylinder of the water outlet shaft 6 is evenly provided with water holes 6-1, and the two sides of the water outlet holes 6-1 are provided with holes perpendicular to the surface of the water outlet shaft 6. The support column 6-2, the top of the support column 6-2 is provided with threads, the filter disc 8 is embedded in the support column 6-2 and relatively fixed on the circumference of the water outlet shaft 6 by screws, the filter disc 8 in the single filter system Number is determined by the medium and filtration capacity of filtration, and twenty filter discs 8 can be installed side by side at most on the water outlet shaft 6 in the filter pool 2. The filter disc 8 is spliced by six fan-shaped discs 8-1 that equally divide the circumference. The radial section of the disc 8-1 is a rhombus truncated from the upper and lower acute angles. The obtuse angle of the rhombus section of the disc 8-1 is 120°- 160°, the section rotates 360° around the horizontal central axis of the hollow water outlet shaft 6 to form a hyperboloid filter rotating disc body. The disc 8-1 is composed of a filter frame and a dense fiber filter cloth, and the dense fiber filter cloth is set on the filter frame; the filter frame of the disc 8-1 is injection-molded into a support frame by polypropylene or fiberglass material, as The support body of the dense fiber filter cloth; the dense fiber filter cloth is made of bundled fibers folded and woven into the base cloth, and the bundled fibers are woven from nylon and acrylic blended fibers, and each nylon and acrylic blended fiber The fiber length is 20-50 mm, and the top of the bundle-shaped fiber is a fiber floc flower, and the diameter of each bundle-shaped fiber is 0.3-2.0 mm. In actual use, bundled fibers with different bundle diameters can be selected according to different working conditions and water outlet requirements. The main advantage of bundled fibers is that dense fiber flocs are formed on the top of the bundled fibers, that is, the surface layer of the filter cloth. , the root of the bundle fiber and the filter cloth are woven very firmly, so that a very fine surface filter layer can be formed on the surface to intercept various solid suspended matter in the medium, and at the same time, the gap at the root of the bundle fiber can make the filtrate Smoothly passing through the dense fiber filter cloth and entering the water outlet shaft 6 from the water hole 6-1 can not only greatly reduce the resistance loss of the filter cloth, but also increase the fineness of the filter system by about 40%.

As shown in Figures 1-2 and 5-6, the drive device 7 of the hyperboloid rotating disk dense-bundle fiber filtration system of the present invention is installed above the filter tank 2 and connected to the water outlet shaft 6 through a chain 13 made of non-metallic materials. The chain 13 is light and reliable, has high transmission efficiency, and has the characteristics of self-lubrication and will not be corroded. The filter disc cleaning device 9 comprises a back suction pump 14, a spray washing pump 15, a connecting pipe 16, a cleaning head 17, a fixing device 18, a solenoid valve, a check valve, and the back suction pump 14 and the spray washing pump 15 are fixed on the filter tank. The upper side of 2 is connected to the cleaning head 17 through the connecting pipe 16 and the electromagnetic valve respectively, wherein the connecting pipe and the check valve are suspended and installed by the steel bracket, and the cleaning head 17 is fixed by the fixing device 18 fixed on the side wall of the filter tank 2 Attached to the side of the corresponding filter disc 8 . The cleaning head 17 is in a "V" shape, and the included angle range of the cleaning head 17 is 120°-160°, and the included angle of the cleaning head 17 is always the same as the obtuse angle of the rhombus section of the disc 8-1; the cleaning head 17 includes back suction The mouth 17-1 and the flushing nozzle 17-2, the flushing nozzle 17-2 is located on both sides of the back suction port 17-1, the back suction port 17-1 is spindle-shaped, and the caliber of the back suction port 17-1 is determined by the The edge from the axis 6 to the filter disc 8 gradually increases. The filter disc cleaning device 9 of the present invention can perform two functions of back suction and spray washing, so as to ensure the cleaning effect of hyperboloid dense bundle fibers, improve the filtering ability and prolong the service life. When cleaning the dense fiber filter cloth on the filter disc 8, the attachment on the surface of the dense fiber filter cloth is sucked off by the back suction pump 14, and then the water spray pump 15 is started to spray the attachment at the root of the bundle fiber to achieve thorough cleaning At the same time, the back of the dense-bundle fiber filter cloth can be thoroughly cleaned without disassembling the dense-bundle fiber filter cloth.

As shown in Figure 1-2, the bottom of the filter tank 2 of the double-curved disc dense-bundle fiber filtration system of the present invention is provided with two cone bucket-shaped sludge collection tanks 19, and each sludge collection tank 19 is connected to the filter tank 19 through a connecting pipe 16. The sludge discharge pump 10 corresponding to the top of the tank 2 is connected to remove the sludge deposited in the sludge collection tank 19 . The sludge sedimentation effect of the cone bucket type sludge collection tank 19 of the present invention is remarkable, and the effective deposition of sludge at the bottom of the sludge collection tank 19 reduces the amount of sludge on the dense-bundle fiber filter cloth, which can prolong the use of the dense-bundle fiber filter cloth life, while reducing the frequency of back suction and spray washing; when the filter disc cleaning device 9 performs back suction and spray washing on the dense fiber filter cloth on the filter disc 8, the automatic control system opens the mud discharge valve and starts the mud discharge The pump 10 discharges the mud, and when the water level drops to a signal to stop the mud discharge level or the running time of the mud discharge system set by the automatic control system is up, the automatic control system will turn off the mud discharge pump 10 . The two sets of sludge discharge systems matched with the two cone bucket type sludge collection tanks 19 of the present invention can quickly and effectively discharge sludge without causing large turbulence in the water body and will not affect the sludge sedimentation effect of the filter tank.

In addition, the hyperboloid rotary disc dense-bundle fiber filtration system of the present invention is also equipped with an automatic control system, which is composed of electric control boxes, PLC and other electronic control components, and is used to realize automatic operation of the filter disc cleaning device 9 and the mud discharge system. And can manually adjust the back suction time, interval time and mud discharge time. In the present invention, as the accumulation of solid particles on the dense-bundle fiber filter cloth increases, the hydraulic resistance of the dense-bundle fiber filter cloth and the water level difference between the water inlet 2-1 and the water outlet 4-1 will also increase. Once the water head loss reaches the design value, the automatic control system will start, and the drive device 7 installed on the upper part of the pool body 1 will drive the filter disc 8 on the water outlet shaft 6 to rotate slowly through the chain 13, and the reverse suction pump 14 will be turned on, and the sludge layer will pass through. The back suction port 17-1 on the cleaning head 17 is removed from the surface of the filter disc 8 while the filtration process keeps running without interruption.

When the present invention is in use, the sewage to be treated or other liquids enter the filter tank 2 from the water inlet 2-1, and the suspended solids in the sewage to be treated or other liquids are removed when passing through the dense fiber filter cloth of the filter disc 8 Removal, the entrapped suspended solids are left on the dense fiber filter cloth. The filtered water enters the water outlet shaft 6 from the water hole 6-1 on the water outlet shaft 6, and enters the rising chamber 3 through the water hole 2-2, and enters the clear water pool 4 after being regulated by the adjustable water outlet weir 5 , and flow into the pipeline from the water outlet 4-1. When solid dirt accumulates on the dense fiber filter cloth, the water flow resistance of the filtration system will increase, which will cause the water level in the filter tank 2 to rise. When the water level difference between the water levels reaches 25cm, the cleaning process of the filter disc 8 will start, that is, the filter disc cleaning device 9 starts. When the filter system is running at a low load, the cleaning of the filter disc 8 can also be started by time control (generally every 2 hours). The driving device 7 in the filtration system drives the filter disc 8 on the water outlet shaft 6 to rotate at a low speed of 1 rpm through the chain 13, and the solid dirt accumulated on the dense fiber filter cloth passes through the back suction of the filter disc cleaning device 9. suction system to remove, and then start the spray system in the filter disc cleaning device 9 to spray the dense fiber filter cloth. The whole cleaning process lasts about 3.5 minutes, and the filtration is not interrupted during the cleaning process. The sludge removed in the cleaning process is returned to the previous process section (such as secondary sedimentation), and the solid matter deposited in the filter tank 2 is controlled by the sludge discharge pump 10 according to the set time. The sludge discharge system works quickly and effectively, without causing large turbulence in the water body and affecting the sludge sedimentation effect of the filter tank 2 .

When the hyperboloid rotating disk dense-bundle fiber filtration system of the present invention is used to treat domestic sewage, when the number of filter disks 8 is 9 and the obtuse angle of the rhombus section of the filter disk 8 is 160°, every 10,000 tons/ The technical parameters of Tiancheng domestic sewage are as follows:

Influent water quality: SS≤20mg/l (outlet water from secondary settling tank in normal operation);

Effluent water quality: SS≤5mg/l, turbidity≤3NTU, TP≤0.5mg/l;

Average filtration rate: 10-12m ³ /hm ² ;

Head loss: 0.25-0.35m;

Back suction pump: Q=30 m ³ /h, H=7-15m, N=2.2kw;

Spray pump: Q=30 m ³ /h, H=7-15m, N=2.2kw;

Drive motor power: 0.55kw;

Effective filtration area of a single disc: S≥5.5m ² ;

System area: 14 m ² .

The above-described embodiments are only described to the preferred implementation of the present invention, and are not intended to limit the concept and scope of the present invention. Under the premise of not departing from the design concept of the present invention, ordinary engineers and technicians in the field can make technical solutions of the present invention. The various modifications and improvements should fall within the protection scope of the present invention, and the technical content claimed in the present invention has been fully recorded in the claims.

Claims (7)

1. A double-curved disc dense-bundle fiber filtration system, including a pool body (1), a water outlet shaft (6), a drive device (7), a filter disc (8), a filter disc cleaning device (9) and a sludge discharge pump (10), the tank body (1) is composed of a filter tank (2), an ascending chamber (3) and a clear water tank (4), the outer wall of the filter tank (2) is provided with a water inlet (2-1), the filter tank (2) It is connected with the ascending chamber (3) through the water hole (2-2) provided on the inner wall, and the ascending chamber (3) is connected with the clear water pool (4) through the adjustable weir (5), and the clear water pool (4 ) is provided with a water outlet (4-1) on the outer wall, and the water outlet shaft (6) is fixed in the filter tank (2) through the bearing housing (11) on the front side and the slewing support (12) on the rear side, and the water outlet shaft ( The front end of 6) is closed and connected to the water hole (2-2), the driving device (7) is installed above the filter tank (2) and connected to the water outlet shaft (6) through the chain (13), and the filter disc (8) is installed On the water outlet shaft (6), the filter disc cleaning device (9) is connected with the filter disc (8), and the mud discharge pump (10) is installed above the filter tank (2) and connected with the bottom of the filter tank (2). It is characterized in that the water outlet shaft (6) is an equilateral hexagonal cylinder outside a hollow center circle, and the cylinder of the water outlet shaft (6) is uniformly provided with water holes (6-1), and the water hole (6-1 ) are provided with support columns (6-2) perpendicular to the surface of the water outlet shaft (6); the filter disc (8) is embedded in the support column (6-2) and relatively fixed on the water outlet shaft (6) On the circumference, the filter disc (8) is spliced by six fan-shaped discs (8-1) that equally divide the circumference. -1) It consists of a filter frame and a dense fiber filter cloth. The dense fiber filter cloth is set on the filter frame; It is woven from fibers blended with nylon and acrylic fibers. The top of the bundled fibers is in the form of flocculent flowers, and the diameter of each bundled fiber is 0.3-2.0 mm. 2. The hyperboloid rotating disk dense-bundle fiber filtration system according to claim 1, characterized in that the obtuse angle of the diamond-shaped section of the disk (8-1) is 120°-160°. 3. The double-curved surface rotating disc dense-bundle fiber filtration system according to claim 1, characterized in that the filter disc cleaning device (9) includes a reverse suction pump (14), a spray washing pump (15), a connecting pipe (16), cleaning head (17) and fixing device (18), anti-suction pump (14) and spray washing pump (15) are fixed on the upper side of the filter tank (2) and connected to the cleaning tank through the connecting pipe (16) respectively. The heads (17) are connected, and the cleaning head (17) is fixed on the side of the corresponding filter disc (8) through the fixing device (18), and the fixing device (18) is fixed on the side wall of the filter tank (2). 4. The hyperboloid rotating disk dense-bundle fiber filtration system according to claim 3, characterized in that the cleaning head (17) is in a "V" shape, and the cleaning head (17) includes a back suction port (17-1 ) and the flushing nozzle (17-2), the flushing nozzle (17-2) is located on both sides of the reverse suction port (17-1). 5. The hyperboloid rotating disk dense-bundle fiber filtration system according to claim 4, characterized in that the back suction port (17-1) is spindle-shaped, and the diameter of the back suction port (17-1) is The edge of the water outlet shaft (6) to the filter disc (8) increases gradually. 6. The hyperboloid rotating disk dense-bundle fiber filtration system according to claim 1, characterized in that two sludge collection tanks (19) are provided at the bottom of the filter tank (2), and the sludge collection tanks ( 19) It is in the shape of a cone bucket, and the mud collection tank (19) is connected with the mud discharge pump (8) through the connecting pipe (16). 7. The hyperboloid rotating disc dense-bundle fiber filtration system according to claim 1, characterized in that the chain (13) is made of non-metallic material.

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