CN102259953A - Pollution-resistant film column - Google Patents

Abstract

The invention provides a pollution-resistant film column, relating to a component used for sewage treatment equipment. The invention aims at providing a pollution-resistant film column which is applicable to sewage treatment and has long service life. The pollution-resistant film column provided by the invention comprises a film case, a center draw bar, a film roll component, an upper end cover flange, a lower end cover flange, a sealing device, a water inlet pipe, a water outlet pipe and a permeate outlet pipe, wherein the center draw bar sequentially penetrates through the upper end cover flange, the film roll component and the permeate outlet pipe from top to bottom, a film roll in the film roll component is formed by a plurality of film bags and a screen which are arranged at intervals and then are wound on a permeate collection tube, the screen comprises a plurality of longitudinal lines and transverse lines, the longitudinal lines point to the upper end face of the film roll component, the transverse lines are intersected with the longitudinal lines, the thickness of each transverse line is less than that of each longitudinal line, a concentrate water flow channel formed between every two longitudinal lines is wider channel and smoother in flow, and impurity with larger grain size can be allowed to enter; meanwhile, the hydraulic loss is reduced, thus the pollution-resistant film column is applicable to sewage treatment and has long service life.

Description

Anti-pollution membrane column

technical field

The invention relates to a component of water treatment equipment, in particular to an anti-pollution membrane column for sewage treatment.

Background technique

With the increasing scarcity of domestic water resources and severe water pollution situation, the state has introduced more stringent pollution control standards, both urban sewage discharge standards and landfill leachate discharge standards are more stringent, while vigorously promoting sewage treatment and reuse. However, in order to meet stricter discharge standards or reuse standards in many water treatment fields, conventional biochemical and physicochemical treatment processes can no longer meet the needs. The application of membrane technology is the best solution to this problem. But so far, the structure of the partition 1' of the existing roll-type membrane column is shown in Figure 4 and Figure 5, which is composed of a number of longitudinal lines and transverse lines of equal thickness, and is mainly used for the treatment of water supply or Separation of relatively single industrial materials. However, in the field of sewage treatment, since the concentration of organic pollutants, inorganic scaling substances and suspended particulate impurities contained in sewage is much higher than that of water supply, these substances will block the mesh of the membrane column, causing the life of the membrane column to decrease sharply. It doesn't even work properly.

Contents of the invention

The technical problem to be solved by the invention is to provide an anti-pollution membrane column which is suitable for sewage treatment and has a long service life.

The anti-pollution membrane column of the present invention includes a membrane shell, a central pull rod, a membrane roll part, an upper end cover flange, a lower end cover flange, a water inlet pipe, a water outlet pipe and a permeate outlet pipe, and the membrane roll part includes a membrane roll, a permeate The liquid collection pipe and diversion plate, the membrane roll is composed of a number of membrane bags and spacers arranged at intervals and then wound on the permeate collection pipe. The central tie rod passes through the upper end cover flange and the membrane roll parts sequentially from top to bottom. and the permeate outlet pipe, the water inlet pipe and the water outlet pipe are installed on the upper end cover flange and the lower end cover flange respectively, wherein the spacer includes several longitudinal lines and transverse lines, the longitudinal lines point to the upper end surface of the membrane roll part, and the transverse lines The threads intersect the longitudinal threads, and the thickness d' of the transverse threads is smaller than the thickness d of the longitudinal threads.

In the anti-pollution membrane column of the present invention, the transverse lines are perpendicular to the longitudinal lines.

The anti-pollution membrane column of the present invention, wherein the lower end of the upper end cover flange is located above the membrane roll part, and a water distributor is fixedly installed. The water distributor is disc-shaped, and a stepped hole is opened in the center, and the axis of the stepped hole is in line with the The axes of the water distributor are coincident. There is an annular groove on one end surface of the water distributor. There is an installation hole, the installation hole is connected with the annular groove, and a water baffle is arranged in the annular groove and opposite to the installation hole. The lower surface of the plate is located above the installation hole, the end surface of the water distributor where the installation hole is located fits with the lower end surface of the upper end cover flange, the side surface of the water distributor fits with the inner surface of the membrane shell, and the central tie rod passes through the water distributor. In the step hole, the upper end of the permeate collection pipe of the membrane roll part is installed in the large hole of the step hole of the water distributor, and the lower end of the water inlet pipe is installed in the installation hole of the water distributor.

The anti-pollution membrane column of the present invention, wherein the upper end of the lower end cover flange is located below the membrane roll part, and a water collector is fixedly installed. The water collector has the same structure as the water distributor, and the installation hole on the water collector is located The end face is attached to the upper end face of the flange of the lower end cover, the side surface of the water collector is attached to the inner surface of the membrane shell, the permeated liquid outlet pipe is installed in the small hole of the step hole of the water collector, and the permeable membrane coil part The lower end of the liquid collecting pipe is installed in the large hole of the step hole of the water collector, and the upper end of the water outlet pipe is installed in the installation hole of the water collector.

The difference between the anti-pollution membrane column of the present invention and the prior art is that the spacer in the film roll of the present invention includes several longitudinal lines and transverse lines, the longitudinal lines point to the upper end surface of the film roll parts, the transverse lines intersect the longitudinal lines, and the transverse lines The thickness of the lines is smaller than that of the longitudinal lines. The concentrated water channel formed between two longitudinal lines has the characteristics of wider channels and smoother flow. It can tolerate the entry of impurities with larger particle sizes and reduce hydraulic loss. The grid and There is no dead angle in the contact part of the membrane, and it is easier to clean, so it is suitable for sewage treatment and has a long service life.

The water distributor in the anti-pollution membrane column of the present invention can make the raw water flowing in from the water inlet pipe distribute more reasonably above the membrane coil parts, and the blocking of the water baffle in the water distributor prevents the raw water from directly impacting the membrane coil parts.

The anti-pollution membrane column of the present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the front sectional view of anti-pollution membrane column of the present invention;

Fig. 2 is the front view of the spacer in the anti-pollution type membrane column of the present invention;

Fig. 3 is a sectional view along the A-A direction in Fig. 2;

Fig. 4 is the front view of the spacer in the membrane column of the prior art;

Fig. 5 is the sectional view along B-B direction in Fig. 4;

Fig. 6 is the bottom view of the water distributor in the anti-pollution type membrane column of the present invention (the top view of the water collector);

Fig. 7 is the sectional view along C-C direction in Fig. 6;

Fig. 8 is a working state diagram of the anti-pollution membrane column of the present invention;

Fig. 9 is a schematic diagram of the unrolled state of the membrane roll of the anti-pollution membrane column of the present invention;

FIG. 10 is a partially enlarged view of position I in FIG. 1 .

Detailed ways

As shown in Figure 1 and Figure 10, the anti-pollution membrane column of the present invention includes a membrane shell 1, a central tie rod 2, a membrane roll part 3, an upper end cover flange 4, a lower end cover flange 5, a water distributor 17, and a water collector 22 , the sealing device 6, the water inlet pipe 7, the water outlet pipe 8 and the permeate outlet pipe 9, the membrane shell 1 is a circular tubular shell, the membrane roll part 3, the water distributor 17, the water collector 22, the upper end cover flange 4 and the lower end The cover flange 5 is located in the membrane shell 1, and the membrane roll part 3 includes a membrane roll 10, a permeate collection pipe 11 and a deflector plate 12, and the membrane roll 10 is composed of several membrane bags 13 and a partition net 14 made of plastic After being arranged at intervals, it is wound on the permeate collection pipe 11, as shown in Figure 9, the inner ends of the spacer 14 and the membrane bag 13 are fixedly installed in the elongated holes on the permeate collection pipe 11, and the membrane bag 13 is hollow and the inner end is open, so that the water molecules in the raw water can pass through the membrane bag 13 and enter the first water purification channel 23 in the middle of the membrane bag 13, wherein the first water purification channel 23 is a cavity in the middle of the membrane bag 13. As shown in Fig. 2 and Fig. 3, the partition 14 includes several longitudinal lines 15 and transverse lines 16, the longitudinal lines 15 point to the upper end surface of the film roll part 3, the transverse lines 16 intersect perpendicularly with the longitudinal lines 15, and the thickness of the transverse lines 16 d' is smaller than the thickness d of the longitudinal thread 15 . Both the upper and lower bottom surfaces of the membrane roll 10 are fixed by the guide plate 12, which is fixedly installed on the permeate collection pipe 11, wherein the guide plate 12 is provided with a number of through holes to allow the raw water to flow through; the membrane roll Above the part 3, a water distributor 17 is fixedly installed. As shown in FIG. 6 and FIG. One end surface of the device 17 is provided with an annular groove 19, the annular groove 19 is located outside the stepped hole 18, and the large hole of the annular groove 19 and the stepped hole 18 are located on the same end surface of the water distributor 17, the other end surface of the water distributor 17 There is a mounting hole 20 on the top, and the mounting hole 20 communicates with the annular groove 19. In the annular groove 19, a water retaining plate 21 is provided at a position opposite to the mounting hole 20. The upper end surface of the water retaining plate 21 is located on the water distributor 17. On the end surface where the annular groove 19 is located, the lower end surface of the water retaining plate 21 is located above the installation hole 20, and the end surface where the installation hole 20 is located on the water distributor 17 fits with the lower end surface of the upper end cover flange 4, and the side surface of the water distributor 17 It fits with the inner surface of the membrane shell 1; a water collector 22 is fixedly installed under the membrane roll part 3, and the structure of the water collector 22 is the same as that of the water distributor 17. The upper end surface of the flange 5 is attached, the side surface of the water collector 22 is attached to the inner surface of the membrane shell 1, and the lower end of the permeated liquid collection pipe 11 of the membrane roll part 3 is installed in the large hole of the stepped hole 18 of the water collector 22 Inside, the permeate outlet pipe 9 is located below the permeate collection pipe 11, the upper end surface of the permeate outlet pipe 9 is in contact with the lower end surface of the permeate collection pipe 11, and the permeate outlet pipe 9 is installed in the water collector 22 In the small hole of the stepped hole 18, and the permeate outlet pipe 9 passes through the lower end cover flange 5; the two ends of the center tie rod 2 are threaded, and the center tie rod 2 passes through the upper end cover flange 4 and the water distribution in sequence from top to bottom. Device 17, membrane roll part 3, water collector 22, lower end cover flange 5 and permeate outlet pipe 9, the permeate collection pipe 11 of membrane roll part 3, permeate outlet pipe 9 are all connected with the center tie rod 2 There is a gap between them, forming the second clean water flow channel 24, and the two ends of the center tie rod 2 are equipped with nuts for fixing the parts installed on the center tie rod 2. The water inlet pipe 7 passes through the upper end cover flange 4 and is installed on the water distributor 17 , and the water outlet pipe 8 passes through the lower end cover flange 5 and is installed on the water collector 22 . The sealing device includes several sealing rings made of special rubber, which are used between the upper end cover flange 4 and the membrane casing 1, between the water distributor 17 and the membrane casing 1, between the water distributor 17 and the central tie rod 2, and between the water distributor 17 Between the permeate collection pipe 11, between the water distributor 17 and the water inlet pipe 7, between the membrane coil part 3 and the membrane shell 1, between the water collector 22 and the membrane shell 1, between the water collector 22 and the permeate Between the collection pipes 11, between the water collector 22 and the permeate outlet pipe 9, between the water collector 22 and the outlet pipe 8, between the lower end cover flange 5 and the membrane shell 1, between the permeate outlet pipe 9 and Seal between center tie rods. This type of packaging can make the membrane column withstand higher operating pressure. The membrane shell made of glass fiber reinforced plastic can withstand the operating pressure of 7.5MPa, and the membrane shell made of stainless steel can withstand the operating pressure of 20MPa. , much higher than the traditional coiled membrane column, can overcome higher osmotic pressure, and the water production rate is higher than the traditional coiled membrane.

As shown in Figure 8, when the anti-pollution membrane column of the present invention is in use, the raw water that needs to be treated flows in from the water inlet pipe 7, passes through the water distributor 17, and the raw water enters the membrane roll part 3 evenly, and the raw water passes through the membrane bag and the separation net The formed concentrated water flow path flows through the membrane coil part 3, passes through the water collector 22, and flows out from the outlet pipe 8. When the raw water flows through the membrane coil part 3, under the action of the pressure difference, the water molecules in the raw water permeate the membrane The bag 13 enters the first clean water channel in the middle of the film bag 13, and finally collects into the second clean water channel 24 between the permeate collection pipe 11 and the central tie rod 2, and flows out through the permeate outlet pipe 9.

The raw water treated by the anti-pollution membrane column of the present invention includes garbage permeate and other sewage.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Variations and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (4)

1. antipollution type film post, comprise putamina (1), center pull rod (2), film volume parts (3), upper end cover flange (4), lower end cover flange (5), water inlet pipe (7), rising pipe (8) and see through liquid rising pipe (9), described film volume parts (3) comprise film volume (10), see through liquid collection tube (11) and flow guiding disc (12), described film volume (10) is wound on through liquid collection tube (11) by some film bags (13) and the cloth postpone of filter (14) interval and goes up formation, center pull rod (2) order is from top to bottom passed upper end cover flange (4), film is rolled up parts (3) and is seen through liquid rising pipe (9), described water inlet pipe (7) and rising pipe (8) are installed in respectively on upper end cover flange (4) and the lower end cover flange (5), it is characterized in that: described filter (14) comprises some longitudinal wires (15) and x wire (16), described longitudinal wire (15) points to the upper surface of film volume parts (3), x wire (16) and longitudinal wire (15) intersect, and the thickness d of x wire (16) ' less than the thickness d of longitudinal wire (15).

2. antipollution type film post according to claim 1, it is characterized in that: described x wire (16) is perpendicular to longitudinal wire (15).

3. antipollution type film post according to claim 2, it is characterized in that: the lower end of described upper end cover flange (4), and be positioned at the top of film volume parts (3), be installed with water injection allocator (17), it is discoid that described water injection allocator (17) becomes, the center offers stepped hole (18), the dead in line of the axis of described stepped hole (18) and water injection allocator (17), offer ring groove (19) on one end face of described water injection allocator (17), ring groove (19) is positioned at the outside of stepped hole (18), and ring groove (19) all is positioned on the same end face of water injection allocator (17) with the macropore of stepped hole (18), the other end of described water injection allocator (17) is provided with an open holes (20), described open holes (20) is connected with ring groove (19), in described ring groove (19), and the position relative with open holes (20) is provided with a water eliminator (21), the upper surface of described water eliminator (21) is positioned at water injection allocator (17) and goes up on the end face at ring groove (19) place, the lower surface of water eliminator (21) is positioned at the top of open holes (20), described water injection allocator (17) is gone up the end face at open holes (20) place and fit in the lower surface of upper end cover flange (4), the internal surface of the side surface of water injection allocator (17) and putamina (1) is fitted, described center pull rod (2) is passed the stepped hole (18) of water injection allocator (17), liquid collection tube (11) upper end that sees through of described film volume parts (3) is installed in the macropore of water injection allocator (17) stepped hole (18), and the lower end of described water inlet pipe (7) is installed in water injection allocator (17) open holes (20).

4. antipollution type film post according to claim 3, it is characterized in that: the upper end of described lower end cover flange (5), and be positioned at the below of film volume parts (3), be installed with water collector (22), water collector (22) is identical with described water injection allocator (17) structure, described water collector (22) is gone up the end face at open holes (20) place and fit in the upper surface of lower end cover flange (5), the internal surface of the side surface of water collector (22) and putamina (1) is fitted, described seeing through in the aperture of stepped hole (18) that liquid rising pipe (9) is installed in water collector (22), liquid collection tube (11) lower end that sees through of described film volume parts (3) is installed in the macropore of water collector (22) stepped hole (18), and the upper end of described rising pipe (8) is installed in water collector (22) open holes (20).

Images