WO2022041090A1

WO2022041090A1 - Pressure filtering system and filtering method thereof

Info

Publication number: WO2022041090A1
Application number: PCT/CN2020/111969
Authority: WO
Inventors: 周魁; 张永栋; 卫勇
Original assignee: 南京苏环环境互联科技有限公司
Priority date: 2020-08-26
Filing date: 2020-08-28
Publication date: 2022-03-03
Also published as: CN112158970A; CN112158970B

Abstract

Disclosed are a pressure filtering system and a filtering method thereof, which belong to the technical field of filtering apparatuses. The pressure filtering system comprises: a primary filtering unit in communication with a water intake pipe; a secondary filtering unit in communication with an outlet of the primary filtering unit by means of a connecting pipe; and a drainage unit respectively in communication with a drainage port of the primary filtering unit, wherein a water source to be treated enters the primary filtering unit through the water intake pipe and is subjected to solid-liquid separation by means of the primary filtering unit; separated water is transferred into the secondary filtering unit through the connecting pipe so as to be subjected to adsorption treatment; the treated water is discharged from a water drainage port of the secondary filtering unit; and suspended matter separated in the primary filtering unit is discharged from the drainage unit. The drainage unit provided in the present invention is used for treating separated suspended matter in a timely and effective manner. In addition, multi-stage treatment can be performed on water, so as to improve the filtering efficiency.

Description

A pressure filtration system and its filtration method

technical field

The invention belongs to the technical field of filtering devices, and in particular relates to a pressure filtering system and a filtering method thereof.

Background technique

At present, in water treatment, in order to improve the intensity of water treatment and increase the cleanliness of filtered water, multi-stage filtration is set, but no matter how many stages of filtration, the filters located in the first and second filtration units It is necessary to carry out solid-liquid separation, such as sludge, particles, etc. It is precisely because of the gradual increase of sludge and particles due to unclean backwashing that the water quality after filtration decreases and the water head loss increases, so that frequent shutdowns are required to manually remove the filter material for cleaning.

technical problem

In order to solve the technical problems existing in the above background technology, the present invention provides a pressure filtration system with multi-stage filtration and internal cleaning and a filtration method thereof.

technical solutions

A pressure filtration system comprising:

The primary filter unit is connected with the water inlet pipe;

a secondary filter unit, communicated with the outlet of the primary filter unit through a connecting pipe;

a sewage discharge unit; communicated with the sewage discharge ports of the primary filter unit respectively;

The water source to be treated enters the primary filtration unit through the water inlet pipe, and the solid-liquid separation is carried out through the primary filtration unit, and the separated water is transferred to the secondary filtration unit through the connecting pipe for adsorption treatment. It is discharged from the water outlet of the secondary filter unit; the suspended matter separated in the primary filter unit is discharged through the sewage discharge unit.

In a further embodiment, the primary filter unit includes:

a first cylinder, the first cylinder is arranged horizontally; one end of the first cylinder is provided with a water inlet;

a transmission shaft, which is installed in the first cylinder along the length direction of the first cylinder; the end of the transmission shaft close to the water inlet is connected to the drive motor in a transmission manner;

a fixing ring, fixed on one end of the transmission shaft close to the water inlet, and located between the water inlet and the drive motor;

The conveying plate is spirally wound on the transmission shaft;

One end of the separating net is fixed on the fixing ring along the length direction of the transmission shaft; the inner wall of the separating net and the conveying plate form a line contact;

Wherein, the water inlet is communicated with the interior of the separation net, that is, the water to be treated directly enters the interior of the separation net after passing through the water inlet; the other end of the separation net extends into the sewage outlet, and the transmission shaft and the The end of the conveying plate close to the sewage outlet extends to the outside of the separation net, and the internal objects located in the separation net are directly transported into the sewage outlet;

The end of the first cylinder away from the water inlet is symmetrically provided with a first water outlet, the first water outlet is communicated with the inlet of the secondary filter unit through a connecting pipe, and the first water outlet is located on the cylinder wall of the first cylinder. Between it and the separation net, it is used to transfer the primary filtered water.

In a further embodiment, annular rings are fixed equidistantly from the outer side wall of the separation net, and a plurality of cylinders are arranged on both side walls of the annular ring, and the cylinders are used to increase the convection of water.

In a further embodiment, the separation net has a circular truncated structure, and the diameter of the separation net gradually decreases from the water inlet to the sewage outlet.

In a further embodiment, the secondary filtering unit includes:

The second cylinder is sequentially arranged in the first adsorption chamber and the second adsorption chamber inside the second cylinder from top to bottom; the first adsorption chamber is provided with a water inlet, and the second adsorption chamber is provided with a water inlet. have a drain;

The water quality filter elements are several in number; they are installed at an equal distance between two carrying plates, and the water quality filter elements are used to remove the fine particles remaining in the water quality after being processed by the primary filtration unit; the two carrying plates and The water quality filter element is located in the first adsorption chamber;

The diversion casing is arranged inside the second adsorption chamber and communicates with the first adsorption cavity; the inner diameter of the diversion casing decreases sequentially from top to bottom, and the diversion casing A multi-layer filter membrane is arranged inside, and the bottom end of the guide shell is communicated with the water outlet; the multi-layer filter membrane is used for absorbing chlorine element in water.

In a further embodiment, the filter membrane is filled with one or more of aluminosilicate adsorbent and activated carbon;

The water quality filter element is a PP cotton filter element.

In a further embodiment, the sewage unit includes:

The connecting body installed at the sewage outlet, the first rolling disc fixed inside the connecting body, the second rolling disc interacting with the first rolling disc and located inside the connecting body, the transmission a rotating shaft connected to the second rolling disc, a rotating motor connected to the rotating shaft, and a material port opened on the connecting body;

The suspended matter enters the connecting body through the sewage outlet, and under the cooperation of the rotating first rolling disc and the second rolling disc, the rolling compaction of the suspended matter is reduced, and the suspended matter is discharged from the material port.

In a further embodiment, a plurality of first annular protrusions with different diameters are provided on the end surface of the first rolling disk close to the second rolling disk, and the annular protrusions are concentric circles with each other;

Several second annular protrusions with different diameters are arranged on the end surface of the second rolling disc close to the first rolling disc. catch;

The second annular protrusion is provided with through holes recessed to the inside at equal distances, and the depth of the through hole is equal to the height of the second annular protrusion;

When the first annular protrusion and the second annular protrusion are mutually clamped, the innermost annular protrusion is the second annular protrusion, and the outermost annular protrusion is the first annular protrusion.

In a further embodiment, the height of the first annular protrusion is slightly lower than the height of the second annular protrusion, and the thickness of the first annular protrusion is slightly smaller than that of two adjacent second annular protrusions The thickness of the second annular protrusion is slightly smaller than the spacing between two adjacent first annular protrusions.

The filtration method using the pressure filtration system as described above specifically includes the following steps:

Step 1. The water source to be treated enters the primary filtration unit through the water inlet pipe, and the suspended solids are filtered and discharged inside the primary filtration unit: the water to be treated enters the separation net directly from the water inlet of the first cylinder At the same time, under the drive of the drive motor, the separation net rotates together with the conveying plate and will generate water flow to the water source located inside the separation net. Under the action of the water flow, the water will be thrown out with tiny particles. Outside the separation net, the suspended solids with larger particles are still enclosed in the separation net;

Step 2. Under the action of the rotating conveying plate, the suspended matter inside the separation net is transported into the sewage outlet. Considering that the end of the transmission shaft and the conveying plate close to the sewage outlet extends to the outside of the separation net, that is, the suspended matter will be accurate. is transported to the sewage discharge unit connected to the sewage outlet for processing, and step 4 is performed;

Step 3: The water thrown out to the separation net flows smoothly to the first under the action of the flow generated by the plurality of cylinders on the two side walls of the annular ring or under the action of the pressure difference generated by the separation net of the circular truncated structure. At the water outlet, and transfer it to the secondary filter unit through the connecting pipe, and perform step 5;

Step 4. The separated suspended matter enters the connecting body through the sewage outlet. Because the second rolling disc rotates relative to the first rolling disc under the action of the rotating motor, and during the rotation, it is also a second annular protrusion. Rotate in the slot between the adjacent first annular protrusions; the suspended matter is first transferred between the second annular protrusion and the first annular protrusion through the through hole, and then passes through the first annular protrusion and the second annular protrusion. Between the rolling discs, and so on, that is, it moves to the edge of the second rolling disc through various gaps, and is finally discharged from the material port. When the material enters from the through hole to the first rolling disc and the second rolling disc overlaps The whole process is subject to the rolling action of the first annular protrusion and the second annular protrusion, and the large particles are turned into extremely small particles and discharged;

Step 5: The water in the secondary filtration unit is first passed through the water quality filter element in the first cavity, and the fine particles that are not treated in the primary filtration unit are adsorbed;

Step 6: The multi-layer filter membrane in the second chamber is then subjected to adsorption treatment to remove chlorine and microbes in the water.

beneficial effect

The primary filtration unit of the present invention is used for the treatment of suspended solids, the primary filtration unit can effectively separate suspended solids and transport the suspended solids to a designated position, and will not accumulate inside the primary filtration unit all the time, At the same time, the transfer of water will not be affected; and a sewage discharge unit is arranged on the sewage discharge port of the primary filter unit, and the sewage discharge unit is used for timely and effective treatment of the separated suspended matter. At the same time, it can carry out multi-stage treatment of water to improve the filtration efficiency.

Description of drawings

FIG. 1 is a connection diagram of a pressure filtration system of the present invention.

FIG. 2 is a schematic structural diagram of a primary filter unit of the present invention.

3 is a cross-sectional view of the primary filter unit of the present invention.

FIG. 4 is a schematic structural diagram of a secondary filter unit of the present invention.

FIG. 5 is a schematic structural diagram of the first adsorption chamber in the secondary filter unit of the present invention.

FIG. 6 is a schematic structural diagram of the diversion casing in the secondary filter unit of the present invention.

FIG. 7 is a schematic structural diagram of a sewage discharge unit in the present invention.

FIG. 8 is a schematic structural diagram of the first rolling disc and the second rolling disc.

FIG. 9 is a cross-sectional view of the first rolling disc and the second rolling disc when they are clamped.

1 to 9 are marked as: primary filter unit 1, secondary filter unit 2, sewage unit 3, first cylinder 101, water inlet 102, transmission shaft 103, drive motor 104, conveying plate 105, separation Net 106 , annular ring 107 , cylinder 108 , second cylinder 201 , first adsorption chamber 202 , second adsorption chamber 203 , water inlet 204 , water outlet 205 , diversion housing 206 , water quality filter element 207 , connecting body 301 , The first rolling disc 302, the second rolling disc 303, the rotating shaft 304, the rotating motor 305, the material port 306, the first annular protrusion 307, the second annular protrusion 308, and the through hole 309.

Embodiments of the present invention

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

The inventor found that: at present, in water treatment, in order to improve the intensity of water treatment and increase the cleanliness of the filtered water, multi-stage filtration is set, but no matter how many stages of filtration, the filter units located in the first and second stages The filter in the filter is required for solid-liquid separation, such as sludge, particles, etc. It is precisely because of the gradual increase of sludge and particles due to unclean backwashing that the water quality after filtration decreases and the water head loss increases, so that frequent shutdowns are required to manually remove the filter material for cleaning.

To this end, the inventor has developed a pressure filtration system and a filtration method with multi-stage filtration and internal cleaning that can automatically separate and discharge suspended solids such as sludge and particles into the separator, including: a first-stage filter unit 1, two Filter unit 2, sewage unit 3, first cylinder 101, water inlet 102, transmission shaft 103, drive motor 104, conveying plate 105, separation net 106, annular ring 107, cylinder 108, second cylinder 201, first An adsorption chamber 202, a second adsorption chamber 203, a water inlet 204, a water outlet 205, a guide casing 206, a water quality filter element 207, a connecting body 301, a first rolling disc 302, a second rolling disc 303, and a rotating shaft 304 , Rotating motor 305 , material port 306 , first annular protrusion 307 , second annular protrusion 308 , through hole 309 .

As shown in FIG. 1 , the primary filter unit 1 is directly connected with the water inlet pipe, the secondary filter unit 2 is communicated with the water outlet of the first filter unit through a connecting pipe, and the primary filter unit 1 is also Connected with the sewage unit 3. The primary filter unit 1 is not only used for solid-liquid separation, but also can discharge the separated solids to the sewage discharge unit 3 for treatment and efficient discharge through the sewage discharge unit 3 .

The working process of the whole system is as follows: the water source to be treated enters the primary filtration unit 1 through the water inlet pipe, and the solid-liquid separation is carried out through the primary filtration unit 1, and the separated water is transferred to the secondary filtration unit through the connecting pipe Adsorption treatment is performed in 2, and the treated water is discharged from the water outlet 205 of the secondary filtration unit 2; the suspended matter separated in the primary filtration unit 1 is discharged through the sewage discharge unit 3.

In a further embodiment, in order to effectively separate solids and liquids and transport the separated fixed or suspended matter to a designated position, it is convenient for the sewage discharge unit 3 to process. As shown in FIG. 2 and FIG. 3 , the primary filter unit 1 includes: a first cylindrical body 101 placed laterally, and a water inlet 102 is opened at one end of the first cylindrical body 101 . A drive motor 104 is fixedly installed on the side of the first cylinder body 101 close to the water inlet 102 , and a drive shaft 103 is drivingly connected to the output shaft of the drive motor 104 , and the drive shaft 103 runs along the first cylinder. The length direction of the body 101 is arranged inside the first cylinder body 101; the end of the transmission shaft 103 close to the water inlet 102 is fixed with a fixing ring, and the fixing ring is located between the water inlet 102 and the driving motor 104. between. At the same time, a separation net 106 is fixed on the fixing ring along the length direction of the transmission shaft 103, one end of the water inlet 102 is arranged outside the first cylinder 101, and the other end is bent in the direction of the fixing ring. Fold and extend to the other side of the retaining ring. The separation net 106 is used to separate the liquid mixed with solid and liquid into: solids such as suspended matter are located in the separation net 106 , and liquid is located outside the separation net 106 . In order to be able to transport the suspended matter inside the separation net 106 to the sewage discharge unit 3 fixedly, a conveying plate 105 is provided on the transmission shaft 103 , and the conveying plate 105 is spirally wound on the transmission shaft 103 At the same time, a line contact is formed between the inner wall of the separating net 106 and the conveying plate 105 . The conveying plate 105 can not only convey suspended solids and other solids to the sewage outlet, but also can generate convection in the mixed liquid, which is convenient for throwing the liquid to the outside of the separation net 106 to achieve a better separation effect.

The water inlet 102 is communicated with the interior of the separation net 106, that is, the water to be treated directly enters the separation net 106 after passing through the water inlet 102; the other end of the separation net 106 extends into the sewage outlet, while the transmission shaft One end of the 103 and the conveying plate 105 close to the sewage outlet extends to the outside of the separation net 106, and the internal objects located in the separation net 106 are directly transported into the sewage outlet;

At the same time, because both the suspended solids and the separated liquid are to be discharged, the two outlets are not related to each other, and the following requirements should be met: a first water outlet is symmetrically opened at one end of the first cylinder 101 away from the water inlet 102 , the first water outlet is communicated with the inlet of the secondary filter unit 2 through a connecting pipe, and the first water outlet is located between the cylinder wall of the first cylinder body 101 and the separation screen 106, and is used to transfer the primary filter. water.

In a further embodiment, in order to enable the separated liquid to be discharged from a water outlet better and more smoothly, the inventor has made the following improvements: the outer sidewall of the separation net 106 is equidistantly fixed with an annular ring 107 , the two side walls of the annular ring 107 are provided with a plurality of cylinders 108. When the separation net 106 rotates under the action of the driving motor 104, the annular ring 107 and the cylinders 108 can increase the amount of water in the liquid. Convection, strengthens the flow of water, flows to the first water outlet, and discharges.

In a further embodiment, the separation net 106 is a circular truncated structure, and the diameter of the separation net 106 gradually decreases from the water inlet 102 to the sewage outlet. That is, the distance between the separation net 106 and the first cylinder 101 gradually increases from the water inlet 102 to the first water outlet. Therefore, considering that the pressure becomes smaller, the water flow tends to flow toward the first water outlet, which is convenient for discharge.

In a further embodiment, the secondary filter unit 2 includes: a second cylindrical body 201 , a first adsorption chamber 202 and a second adsorption chamber 203 are sequentially disposed inside the second cylindrical body 201 from top to bottom. The first adsorption chamber 202 is provided with a water inlet 102, and the water inlet 102 communicates with the first water outlet through a connecting pipe. The bottom of the second adsorption chamber 203 is provided with a drain port 205 for discharging the treated water.

The first adsorption chamber 202 is provided with a number of water quality filter elements 207. The water quality filter elements 207 are PP cotton filter elements and are installed at an equal distance between two carrying plates. The fine particles remaining in the water quality after being processed by the filter unit 1; the two carrying plates and the water quality filter element 207 are located in the first adsorption chamber 202 as shown in FIG. 5 .

The inside of the second adsorption chamber 203 is provided with a guide casing 206, the guide casing 206 communicates with the first adsorption chamber 202, and the inner diameter of the guide casing 206 changes sequentially from top to bottom. The inner part of the guide casing 206 is provided with a multi-layer filter membrane, and the bottom end of the guide casing 206 is communicated with the water outlet 205; the multi-layer filter membrane is used for absorbing water. Chlorine, microbes. The vertical section of the diversion casing 206 is inverse cone shape, in order to increase the contact area with the filter membrane and prolong its filtration time, and strengthen the filtration strength under the extrusion of gravity and pressure. The filter membrane is filled with one or more of aluminosilicate adsorbent and activated carbon.

In a further embodiment, in order to better clean up the separated solid suspended matter, as shown in FIG. 7 , the sewage discharge unit 3 includes: a connecting body 301 , and the connecting body 301 is fixed at the sewage discharge outlet and In communication with the sewage outlet, a first rolling disc 302 is fixed inside the connecting body 301. The center position of the first rolling disc 302 is an open structure, and the open structure is the center from the inside to the A plurality of first annular protrusions 307 with different diameters are disposed on the first rolling disc 302, and the first annular protrusions 307 and the opening structure are concentric circles. The inside of the connecting body 301 is also provided with a second rolling disc 303, and a number of different diameters are arranged on the second rolling disc 303 from the inside to the outside with the center of the second rolling disc 303 as the center. The second annular protrusion 308 is concentric with the open structure. The first annular protrusions 307 and the second annular protrusions 308 are staggered and connected to each other. In order to be able to drive the second rolling disc 303 to rotate, the second rolling disc 303 is drivingly connected with a rotating shaft 304 , and the rotating shaft 304 is drivingly connected to the rotating motor 305 . In order to discharge the crushed particles, the connecting body 301 is provided with a material port 306 . The suspended matter enters the connecting body 301 through the sewage outlet, and the rolling of the suspended matter is reduced under the cooperation of the rotating first rolling disc 302 and the second rolling disc 303, and is discharged from the material port 306.

In order to smoothly discharge the material from the open structure to the material port 306, the inventor has made the following improvements: the second annular protrusion 308 is provided with through holes 309 concave to the inside at equal distances. The depth of the hole 309 is equal to the height of the second annular protrusion 308; when the first annular protrusion 307 and the second annular protrusion 308 are snapped together, the second annular protrusion 308 is located at the innermost The outermost one is the first annular protrusion 307 .

Meanwhile, the following conditions are also satisfied: the height of the first annular protrusion 307 is slightly lower than the height of the second annular protrusion 308, and the thickness of the first annular protrusion 307 is slightly smaller than that of two adjacent second annular protrusions The distance between the annular protrusions 308 , the thickness of the second annular protrusion 308 is slightly smaller than the distance between two adjacent first annular protrusions 307 . That is to say, during rolling, the path of the suspended solids is as follows: the separated suspended solids enter the connecting body 301 through the sewage outlet, and the second rolling disc 303 is relatively opposite to the first rolling disc under the action of the rotating motor 305. 302 rotates, and during the rotation, the second annular protrusion 308 also rotates in the slot between the adjacent first annular protrusions 307; the suspended matter is first transferred to the second annular protrusion 308 and the second annular protrusion 308 through the through hole 309. Between the first annular protrusions 307, then between the first annular protrusions 307 and the second rolling disc 303, and so on, that is, moving to the edge of the second rolling disc 303 through various gaps, and finally from The material port 306 is discharged. When the material enters from the through hole 309 to the overlapping part of the first rolling disc 302 and the second rolling disc 303 until it is discharged, the whole process is affected by the first annular protrusion 307 and the second annular protrusion 308 The rolling action of the large particles turns the large particles into extremely small particles and discharges them.

The filtration method of the pressure filtration system specifically includes the following steps:

Step 1. The water source to be treated enters the primary filtration unit 1 through the water inlet pipe, and the suspended solids are filtered and discharged inside the primary filtration unit 1: the water to be treated enters directly from the water inlet 102 of the first cylinder 101 into the primary filter unit 1. The inside of the separation net 106, at the same time, driven by the drive motor 104, the separation net 106 rotates together with the conveying plate 105, and a water flow is generated to the water source located inside the separation net 106. Under the action of the water flow, the water will With very small particles thrown out of the separation net 106, while the suspended matter with larger particles is still enclosed in the separation net 106;

In step 2, the suspended matter located inside the separation net 106 is transported into the sewage outlet under the action of the rotating conveying plate 105. Considering that the end of the transmission shaft 103 and the conveying plate 105 close to the sewage outlet extends to the outside of the separation net 106, That is, the suspended solids will be accurately transported to the sewage discharge unit 3 connected to the sewage outlet for processing, and step 4 is performed;

Step 3. The water thrown out to the separation net 106 is smooth under the action of the flow of the plurality of cylinders 108 on the two side walls of the annular ring 107 or under the action of the pressure difference produced by the separation net 106 in the circular truncated structure. The water flows to the first water outlet, and is transferred to the secondary filter unit 2 through the connecting pipe, and step 5 is performed;

Step 4. The separated suspended matter enters the connecting body 301 through the sewage outlet. Because the second rolling disc 303 rotates relative to the first rolling disc 302 under the action of the rotating motor 305, and during the rotation, it is also The second annular protrusion 308 rotates in the slot between the adjacent first annular protrusions 307; the suspended matter is first transferred between the second annular protrusion 308 and the first annular protrusion 307 through the through hole 309, and then Then pass between the first annular protrusion 307 and the second rolling disc 303, and so on, that is, move to the edge of the second rolling disc 303 through various gaps, and finally discharge from the material port 306. 309 enters the overlapping part of the first rolling disc 302 and the second rolling disc 303 until it is discharged. The whole process is subject to the rolling action of the first annular protrusion 307 and the second annular protrusion 308, turning the large particles into Very small particles and discharged;

Step 5, reaching the water in the secondary filtration unit 2, first passes through the water quality filter element 207 in the first cavity, and adsorbs the fine particles that are not processed in the primary filtration unit 1;

Claims

A pressure filtration system, characterized in that, comprising:

The primary filter unit is connected with the water inlet pipe;

a secondary filter unit, communicated with the outlet of the primary filter unit through a connecting pipe;

a sewage discharge unit; communicated with the sewage discharge ports of the primary filter unit respectively;

The water source to be treated enters the primary filtration unit through the water inlet pipe, and the solid-liquid separation is carried out through the primary filtration unit, and the separated water is transferred to the secondary filtration unit through the connecting pipe for adsorption treatment. It is discharged from the water outlet of the secondary filter unit; the suspended matter separated in the primary filter unit is discharged through the sewage discharge unit.
A pressure filtration system according to claim 1, wherein the primary filter unit comprises:

a first cylinder, the first cylinder is arranged horizontally; one end of the first cylinder is provided with a water inlet;

a transmission shaft, which is installed in the first cylinder along the length direction of the first cylinder; the end of the transmission shaft close to the water inlet is connected to the drive motor in a transmission manner;

a fixing ring, fixed on one end of the transmission shaft close to the water inlet, and the water inlet is located between the fixing ring and the drive motor;

The conveying plate is spirally wound on the transmission shaft;

One end of the separating net is fixed on the fixing ring along the length direction of the transmission shaft; the inner wall of the separating net and the conveying plate form a line contact;

Wherein, the water inlet is communicated with the interior of the separation net, that is, the water to be treated directly enters the interior of the separation net after passing through the water inlet; the other end of the separation net extends into the sewage outlet, and the transmission shaft and the The end of the conveying plate close to the sewage outlet extends to the outside of the separation net, and the internal objects located in the separation net are directly transported into the sewage outlet;

The end of the first cylinder away from the water inlet is symmetrically provided with a first water outlet, the first water outlet is communicated with the inlet of the secondary filter unit through a connecting pipe, and the first water outlet is located on the cylinder wall of the first cylinder. Between it and the separation net, it is used to transfer the primary filtered water.
The pressure filtration system according to claim 2, wherein an annular ring is fixed at an equal distance on the outer side wall of the separation net, and a plurality of cylinders are arranged on the two side walls of the annular ring. The cylinders are used to increase the convection of the water.
A pressure filtration system according to claim 2, characterized in that, the separation net is of a circular truncated structure, and the diameter of the separation net gradually decreases from the water inlet to the sewage outlet.
A pressure filtration system according to claim 1, wherein the secondary filter unit comprises:

The second cylinder is sequentially arranged in the first adsorption chamber and the second adsorption chamber inside the second cylinder from top to bottom; the first adsorption chamber is provided with a water inlet, and the second adsorption chamber is provided with a water inlet. have a drain;

The water quality filter elements are several in number; they are installed at an equal distance between two carrying plates, and the water quality filter elements are used to remove the fine particles remaining in the water quality after being processed by the primary filtration unit; the two carrying plates and The water quality filter element is located in the first adsorption chamber;

The diversion casing is arranged inside the second adsorption chamber and communicates with the first adsorption cavity; the inner diameter of the diversion casing decreases sequentially from top to bottom, and the diversion casing A multi-layer filter membrane is arranged inside, and the bottom end of the guide shell is communicated with the drain outlet; the multi-layer filter membrane is used to absorb chlorine elements and microbes in the water.
A pressure filtration system according to claim 5, wherein the filter membrane is filled with one or more of aluminosilicate adsorbent and activated carbon;

The water quality filter element is a PP cotton filter element.
The pressure filtration system according to claim 1, wherein the sewage discharge unit comprises:

The connecting body installed at the sewage outlet, the first rolling disc fixed inside the connecting body, the second rolling disc interacting with the first rolling disc and located inside the connecting body, the transmission a rotating shaft connected to the second rolling disc, a rotating motor connected to the rotating shaft, and a material port opened on the connecting body;

The suspended matter enters the connecting body through the sewage outlet, and under the cooperation of the rotating first rolling disc and the second rolling disc, the rolling compaction of the suspended matter is reduced, and the suspended matter is discharged from the material port.
The pressure filtration system according to claim 7, wherein a plurality of first annular protrusions with different diameters are provided on the end surface of the first rolling disc close to the second rolling disc. The protrusions are concentric circles with each other;

Several second annular protrusions with different diameters are arranged on the end surface of the second rolling disc close to the first rolling disc. catch;

The second annular protrusion is provided with through holes recessed to the inside at equal distances, and the depth of the through hole is equal to the height of the second annular protrusion;

When the first annular protrusion and the second annular protrusion are mutually clamped, the innermost annular protrusion is the second annular protrusion, and the outermost annular protrusion is the first annular protrusion.
The pressure filtration system according to claim 8, wherein the height of the first annular protrusion is slightly lower than the height of the second annular protrusion, and the thickness of the first annular protrusion is slightly less than The distance between two adjacent second annular projections, the thickness of the second annular projection is slightly smaller than the distance between two adjacent first annular projections.
The filtration method using the pressure filtration system according to any one of claims 1 to 9, is characterized in that, specifically comprises the following steps:

Step 1. The water source to be treated enters the primary filtration unit through the water inlet pipe, and the suspended solids are filtered and discharged inside the primary filtration unit: the water to be treated enters the separation net directly from the water inlet of the first cylinder At the same time, under the drive of the drive motor, the separation net rotates together with the conveying plate and will generate water flow to the water source located inside the separation net. Under the action of the water flow, the water will be thrown out with tiny particles. Outside the separation net, the suspended solids with larger particles are still enclosed in the separation net;

Step 2. Under the action of the rotating conveying plate, the suspended matter inside the separation net is transported into the sewage outlet. Considering that the end of the transmission shaft and the conveying plate close to the sewage outlet extends to the outside of the separation net, that is, the suspended matter will be accurate. is transported to the sewage discharge unit connected to the sewage outlet for processing, and step 4 is performed;

Step 3: The water thrown out to the separation net flows smoothly to the first under the action of the flow generated by the plurality of cylinders on the two side walls of the annular ring or under the action of the pressure difference generated by the separation net of the circular truncated structure. At the water outlet, and transfer it to the secondary filter unit through the connecting pipe, and perform step 5;

Step 4. The separated suspended matter enters the connecting body through the sewage outlet. Because the second rolling disc rotates relative to the first rolling disc under the action of the rotating motor, and during the rotation, it is also a second annular protrusion. Rotate in the slot between the adjacent first annular protrusions; the suspended matter is first transferred between the second annular protrusion and the first annular protrusion through the through hole, and then passes through the first annular protrusion and the second annular protrusion. Between the rolling discs, and so on, that is, it moves to the edge of the second rolling disc through various gaps, and is finally discharged from the material port. When the material enters from the through hole to the first rolling disc and the second rolling disc overlaps The whole process is subject to the rolling action of the first annular protrusion and the second annular protrusion, and the large particles are turned into extremely small particles and discharged;

Step 5: The water in the secondary filtration unit is first passed through the water quality filter element in the first cavity, and the fine particles that are not treated in the primary filtration unit are adsorbed;

Step 6: The multi-layer filter membrane in the second chamber is then subjected to adsorption treatment to remove chlorine and microbes in the water.