CN110713279B - Seawater desalination water treatment device - Google Patents

Abstract

The invention discloses a seawater desalination water treatment device which comprises a seawater filtering device, a seawater permeation device and a fresh water collecting device which are sequentially arranged, wherein the seawater filtering device comprises a filtering tank and a filtering barrel, the filtering tank is concentrically arranged, the filtering barrel is rotatably connected in the filtering tank, a water inlet pipe and a water outlet pipe are arranged on the filtering tank, a scraping plate attached to the inner wall of the filtering barrel is rotatably connected in the filtering barrel, a connecting shaft is fixedly arranged at the lower end of the scraping plate, the connecting shaft extends into the filtering barrel and is rotatably connected in the filtering barrel, a water discharging cavity and a slag discharging cavity are separated from each other between the filtering tank and the filtering barrel, a slag discharging port communicated with the slag discharging cavity is formed in the bottom of the filtering barrel, a discharging pipe for discharging waste slag is formed in the filtering barrel, the water inlet pipe is communicated with a rotating shaft at the upper end, and a valve is arranged on the discharging pipe. The invention has the effect of cleaning the waste residue in the filter vat.

Description

Seawater desalination water treatment device

Technical Field

The invention relates to the field of seawater desalination equipment, in particular to a seawater desalination water treatment device.

Background

The seawater desalination is that the seawater is used for desalination to produce fresh water, the produced fresh water can increase the total amount of the fresh water, is not influenced by time, space and climate, and ensures stable water supply such as drinking water of coastal residents and water supplement of industrial boilers. A seawater desalination water treatment device is a device for seawater desalination.

Chinese patent No. CN206467051U discloses an intelligent seawater desalination system, which comprises a raw water tank, a raw water pump, a back-flush filter, a high-pressure pump, a reverse osmosis membrane module, and a pure water tank, which are arranged in sequence. The raw water pump pumps seawater into the backwashing filter, the backwashing filter filters the seawater to filter out solid particles such as suspended matters and seaweed in the seawater, and then the seawater is conveyed to the reverse osmosis membrane component, so that water molecules can be discharged from the reverse osmosis membrane component and enter the pure water tank.

In the actual use process, the intelligent seawater desalination system needs to be stopped periodically to flush the backwashing filter and clean impurities in the backwashing filter, so that the later-stage manual maintenance cost is caused, and the high-efficiency production is not facilitated.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a seawater desalination treatment device which has the advantages that waste residues left in a filter vat can be automatically discharged, the filtration efficiency of the filter vat on suspended substances and water-insoluble solid particles in seawater is improved, and the later-stage manual maintenance and manual maintenance cost is reduced.

The technical purpose of the invention is realized by the following technical scheme: a seawater desalination water treatment device comprises a seawater filtering device, a seawater osmosis device and a fresh water collecting device which are sequentially arranged, wherein the seawater filtering device comprises a filtering box and a filtering barrel which are concentrically arranged, the filtering barrel is rotatably connected in the filtering box, the filtering box is provided with a water inlet pipe and a water outlet pipe, a spiral scraper blade is rotatably connected in the filtering barrel, the scraper blade is attached to the inner wall of the filtering barrel, two ends of the filtering barrel are respectively provided with a rotating shaft which is rotatably connected to the filtering box, the rotating shaft is provided with a through hole which is coaxial with the rotating shaft, the lower end of the rotating shaft is rotatably connected with a connecting shaft, the connecting shaft extends into the filtering barrel and is fixedly connected with the scraper blade, a drainage cavity and a deslagging cavity which are mutually separated are arranged between the filtering box and the filtering barrel, the bottom of the filtering barrel is provided with a deslagging hole communicated with the deslagging cavity, the filtering barrel is provided with a discharging pipe for discharging waste residues, the outlet pipe is communicated with the drainage cavity, the inlet pipe is communicated with the rotating shaft at the upper end, and the discharging pipe is provided with a valve.

According to the technical scheme, the seawater enters the seawater filtering device, the seawater enters the seawater osmosis device after being filtered, and the fresh water and the high-concentration seawater flow in different directions in the seawater osmosis device, so that the fresh water is produced. The seawater enters the filter vat, and after the filter vat is rotated, the seawater is centrifugally filtered, so that the filtering efficiency is accelerated, and the seawater enters the drainage cavity through the filter vat and flows out of the drainage pipe. The waste residue that leaves over is attached at the internal surface of filter vat, and the scraper blade rotates this moment, clears away the waste residue from the filter vat, opens the valve of discharging pipe for the sea water flows from the discharging pipe, and the sea water is at the in-process that flows, takes the waste residue in the filter vat to arrange the sediment chamber, at last from discharging pipe discharge filter vat, washes the back that finishes, closes the valve on the discharging pipe. Set up like this, prevent that the waste residue from piling up in the filter vat, prevent that the filtration pore of filter vat from being plugged up, further reduce the cost of the artifical maintenance and the manual maintenance in later stage.

The invention is further configured to: the seawater infiltration device comprises a plurality of infiltration pipes, an infiltration film arranged in the infiltration pipes along the diameter direction of the infiltration pipes, a first connecting pipe and a second connecting pipe which are communicated with the two sides of the infiltration film are respectively arranged at the two ends of the infiltration pipes, the first connecting pipe is communicated with the seawater filtering device, and the second connecting pipe is communicated with the fresh water collecting device.

Through above-mentioned technical scheme, the osmotic membrane makes the hydrone can pass through the osmotic membrane, and other molecules can't pass through, form fresh water and high concentration sea water like this, and fresh water flows into fresh water collection device from the second connecting pipe to accomplish the production of fresh water.

The invention is further configured to: and a high-pressure pump is arranged between the water outlet pipe and the first connecting pipe, and a one-way valve for preventing water from flowing back to the water outlet pipe is arranged on the first connecting pipe.

Through the technical scheme, the speed of water molecules in the seawater penetrating through the permeation mold is low, the high pressure pump applies high pressure to the seawater, so that the permeation rate of the seawater is accelerated, and the seawater backflow is prevented due to the arrangement of the one-way valve.

The invention is further configured to: first connecting pipe and second connecting pipe are total two sets ofly, and are two sets of first connecting pipe and second connecting pipe distribute respectively in the both sides of osmotic membrane, the delivery port of high-pressure pump is equipped with double-circuit solenoid valve, two first connecting pipe all is connected with two delivery ports of double-circuit solenoid valve, fresh water collection device is total two sets ofly and communicates with the second connecting pipe respectively, the both sides that lie in the osmotic membrane on the osmotic pipe are equipped with first emission pipe and the second emission pipe that is used for discharging the high concentration sea water respectively, all be equipped with the solenoid valve on first emission pipe, second emission pipe and the second connecting pipe.

Through the technical scheme, when seawater permeates from one side of the permeable membrane to the other side, the permeable membrane is easy to block, so that the permeable membrane is often required to be backwashed, the conventional backwashing is to backwash the permeable membrane by filtered fresh water, and thus, the backwashing process wastes time and fresh water. The two groups of first connecting pipes and second connecting pipes can be used alternately, so that the permeation direction of seawater is changed, and a backwashing effect is achieved; the permeable membrane is backwashed by seawater, so that the backwashing effect can be achieved, and fresh water can be continuously generated.

The invention is further configured to: and a thrust bearing is arranged between the bottom wall of the filter box and the bottom wall of the filter barrel, a deep groove ball bearing is sleeved outside the rotating shaft, and the deep groove ball bearing is embedded in the side wall of the filter box.

Through above-mentioned technical scheme, thrust bearing is used for assuming the radial load of filter vat, and deep groove ball bearing is used for assuming the radial load of filter vat, makes the rotation that the filter vat can be smooth and easy like this.

The invention is further configured to: be equipped with the rubber circle between connecting axle and the through-hole, be equipped with the division board between drainage chamber and the sediment chamber, the upper and lower lateral wall of filter vat is waterproof, be equipped with the sealing washer between the diapire of division board and filter vat.

Through the technical scheme, the rubber ring is used for preventing water in the filter barrel from flowing out of the through hole; the division board is used for preventing that sea water permeates to row sediment chamber in the drainage chamber.

The invention is further configured to: be equipped with the filter of filtering the waste residue in the discharging pipe, the diameter direction of following the discharging pipe on the discharging pipe just is located the filter top and is equipped with two tip confined branch pipes, one of them slide in the branch pipe and be equipped with the push pedal that is arranged in with waste residue propelling movement to another branch pipe, be equipped with the driving piece that is used for driving push pedal reciprocating motion on the branch pipe.

Through above-mentioned technical scheme, the sea water is when taking the waste residue out of from the filter vat, is filtered on the filter, piles up certain volume back when the waste residue, and driving piece drive push pedal removes, with the waste residue propelling movement on the filter to another branch pipe in, prevents that the waste residue from piling up in the discharging pipe.

The invention is further configured to: keep away from the push pedal slide in the branch pipe and be equipped with the department of keeping away from the push pedal, the department of keeping away from the push pedal of department of keeping away from the board is equipped with the spring, fixed being equipped with on the department of keeping away from the board and overlapping the gag lever post in the spring, the length of gag lever post is less than half of the original length of spring, the lower surface that lies in the department of keeping away from one side of discharging pipe of department of keeping away from the board on the branch pipe has seted up the bar groove.

Through above-mentioned technical scheme, the push pedal carries out the centre gripping compression with supporting the board to the waste residue, reduces the volume of waste residue. When the push plate moves to the edge of the strip-shaped groove, waste residues fall from the strip-shaped groove, and are discharged from the branch pipe. When the push plate returns, the abutting plate slides under the action of the spring to pass through the strip-shaped groove, so that the seawater is prevented from leaking from the strip-shaped groove when the seawater is discharged.

The invention is further configured to: the vertical top that is located the bar groove on the branch pipe slides and is equipped with the picture peg that is used for ejecting branch pipe with the waste residue, the one end of keeping away from the branch pipe on the picture peg is equipped with the cylinder that is used for driving the picture peg and reciprocates.

Through above-mentioned technical scheme, the push pedal is the same as pushing out the branch pipe with the waste residue, ensures that the waste residue can be followed and discharged in the branch pipe. The cylinder is used for automatically driving the push plate to move.

The invention is further configured to: the seawater filtering devices are divided into two groups, and the two groups of seawater filtering devices are communicated with the seawater penetration device.

Through the technical scheme, two groups of seawater filtering devices are standby one and are in use in the actual working process, and when one seawater filtering device is damaged, the standby seawater filtering device is replaced, so that fresh water cannot be interrupted.

In conclusion, the invention has the following beneficial effects:

1. waste residues in the filter barrel can be automatically discharged, so that the good filtration rate performance of the filter barrel is maintained;

2. the filtered waste residues are compressed and then collected, so that the space volume occupied by the waste residues is reduced;

3. the permeable membrane can be cleaned by reverse osmosis with seawater, and can play a cleaning role and obtain fresh water.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment.

Fig. 2 is a schematic view of the internal structure of the filter device of the present embodiment.

Fig. 3 is a schematic structural view of the lower part of the filter box of the present embodiment.

Fig. 4 is a schematic structural view of the connection pipe, the filter vat and the filter box of the embodiment.

FIG. 5 is a schematic illustration of the internal construction of a tapping pipe and a branch pipe according to the present embodiment.

Fig. 6 is a schematic view of the entire structure of the seawater infiltration apparatus of this embodiment.

Fig. 7 is a schematic structural view of the inside of the permeate tube of the present embodiment.

Fig. 8 is a schematic structural view of the backwash inside the permeate pipe of the present embodiment.

Reference numerals: 1. a box body; 2. a seawater filtration device; 21. a filter box; 211. a water inlet pipe; 212. a water outlet pipe; 213. a partition plate; 214. a drainage cavity; 215. a slag discharge cavity; 216. a retainer ring; 217. a seal ring; 22. a filter vat; 221. a rotating shaft; 222. a through hole; 223. a thrust bearing; 224. a deep groove ball bearing; 225. a slag discharge port; 23. a squeegee; 231. a connecting shaft; 232. a rubber ring; 3. a seawater infiltration device; 31. a permeate tube; 32. a permeable membrane; 33. a first connecting pipe; 34. a second connecting pipe; 36. a first discharge pipe; 37. a second discharge pipe; 38. an electromagnetic valve; 39. a one-way valve; 4. a fresh water collection device; 5. a discharge pipe; 50. a valve; 51. a filter plate; 52. a branch pipe; 521. a strip-shaped groove; 53. pushing the plate; 54. a drive member; 55. a resisting plate; 56. a spring; 57. a limiting rod; 58. inserting plates; 59. a cylinder; 6. a material receiving barrel; 7. a high pressure pump; 71. two-way solenoid valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): referring to fig. 1, a seawater desalination treatment apparatus includes a tank 1 (hereinafter, the tank is referred to as fig. 1), a seawater filtering apparatus 2, a seawater infiltration apparatus 3, and a fresh water collection apparatus 4, which are sequentially disposed in the tank 1; firstly, the seawater is delivered into a seawater filtering device 2, solid suspended matters, algae and other solid impurities which are insoluble in water in the seawater are filtered by centrifugal filtration, then the seawater flows out from the seawater filtering device 2 and flows to a seawater penetration device 3, water molecules permeate the seawater penetration device 3 and flow to a fresh water collecting device 4 under the action of high pressure, and the residual high-concentration seawater is discharged into the sea.

Referring to fig. 2, the seawater filtering apparatus 2 includes a filtering tank 21 and a filtering barrel 22 which are concentrically arranged, a water inlet pipe 211 is arranged at the top of the filtering tank 21, and a water outlet pipe 212 is arranged at the side wall; the filter vat 22 is located in the filter box 21, the upper and lower ends of the filter vat 22 are provided with a rotating shaft 221, the rotating shaft 221 is rotatably connected to the filter box 21, and the rotating shaft 221 is provided with a through hole 222 along the axial direction of the rotating shaft 221. The water inlet pipe 211 is communicated with the upper rotating shaft 221, and the lower rotating shaft 221 is sealed. The pivot 221 of lower extreme extends box 1, fixedly on the bottom plate of box 1 sets up the motor, and the lower extreme of pivot 221 sets up the belt pulley, and the motor passes through belt drive belt pulley and pivot 221 rotates, and pivot 221 drives rose box 21 and rotates, and rose box 21 is at the pivoted in-process for the sea water produces centrifugal force, accelerates the filtration of sea water.

Referring to fig. 2, the upper and lower ends of the filter vat 22 are water-tight steel plates, and the cylindrical surface of the filter vat 22 is made of water-tight filter plate material. Set up thrust bearing 223 between the bottom plate of filter vat 22 and the bottom plate of rose box 21, thrust bearing 223 overlaps and is established on pivot 221, makes filter vat 22 can bear great axial load like this, improves filter vat 22 pivoted smoothness nature. An annular partition plate 213 is arranged in the filter box 21, the position of an iron plate on the partition plate 213, which is close to the lower end of the filter barrel 22, is fixed on the filter box 21, and a sealing ring 217 is embedded in the inner side surface of the partition plate 213.

Referring to fig. 2, a scraper 23 is spirally disposed in the filter vat 22, the scraper 23 is attached to the inner wall of the filter vat 22, the lower end of the scraper 23 is folded toward the center position and a connecting shaft 231 is fixedly disposed, and the connecting shaft 231 penetrates through the rotating shaft 221 and is rotatably connected in the through hole 222. When a certain amount of solid waste is attached to the inner wall of the filter vat 22, the scraper 23 rotates to scrape off the waste on the inner wall of the filter vat 22, and the inner wall of the filter vat 22 is cleaned.

Referring to fig. 2 and 4, a partition plate 213 divides a cavity between the filter tank 21 and the filter tub 22 into a drain chamber 214 and a residue discharge chamber 215, and a water outlet pipe 212 communicates with the drain chamber 214. The bottom plate of the filtering barrel 22 is provided with a slag discharge port 225 communicated with the slag discharge cavity 215, the filtering barrel 22 is provided with a discharge pipe 5 communicated with the slag discharge cavity 215, and the lower end of the discharge pipe 5 is provided with a valve 50, specifically an electromagnetic valve in the embodiment. When the scraper 23 is cleaning the inner wall of the filter vat 22, the scraper 23 rotates at this time, and the filter vat 22 does not rotate. The slag moves down the scraper 23 and then opens the valve 50 to allow seawater to flush the slag away, thereby performing the function of discharging the slag out of the filter vat 22. The other end of the discharge pipe 5 extends out of the tank body 1 so that the seawater for washing is discharged into the sea.

Referring to fig. 2, an annular retainer 216 is provided on the bottom plate of the filter box 21, the thrust bearing 223 is blocked by the retainer 216, and an O-ring is provided at the upper end of the retainer 216 and the lower surface of the filter vat 22, and prevents seawater from eroding the thrust bearing 223. A deep groove ball bearing 224 is embedded in the bottom wall of the filter box 21, and the rotating shaft 221 is matched in the deep groove ball bearing 224. A rubber ring 232 is provided between the connecting shaft 231 and the sidewall of the through-hole 222, and the rubber ring 232 prevents seawater from passing through a gap between the through-hole 222 and the connecting shaft 231.

Referring to fig. 4 and 5, the discharge pipe 5 is vertically disposed, and a filter plate 51 is horizontally disposed in the discharge pipe 5, the filter plate 51 being used to filter the slag discharged from the filter vat 22. Two branch pipes 52 which are connected to the outlet pipe 5 and are closed at both ends are arranged horizontally on the outlet pipe 5, the two branch pipes 52 are arranged coaxially, and the lower ends of the branch pipes 52 are flush with the filter plate 51. A push plate 53 is arranged in one branch pipe 52 in a sliding mode, and the push plate 53 is used for pushing the waste residues on the filter plate 51 to the other branch pipe 52, so that the waste residues are prevented from being accumulated on the filter plate 51 and blocking the discharge pipe 5. The valve 50 is located above the branch pipe 52, and a driving member 54 is fixedly arranged on the end surface of the branch pipe 52, and the driving member 54 is used for driving the push plate 53 to reciprocate. The driving member 54 of this embodiment is embodied as an air cylinder, and a piston rod of the air cylinder is fixedly connected to the push plate 53, so as to realize the reciprocating movement of the push plate 53.

Referring to fig. 3 and 5, a support plate 55 is slidably disposed in the branch pipe 52 away from the push plate 53, a spring 56 is disposed at one end of the support plate 55 away from the push plate 53, and two ends of the spring 56 respectively abut against the support plate 55 and the side wall of the end face of the branch pipe 52. A limiting rod 57 is inserted in the spring 56, the limiting rod 57 is fixed on the abutting plate 55, and the length of the limiting rod 57 is smaller than half of the original length of the spring 56. When the driving piece 54 drives the push plate 53 to move, the push plate 53 pushes the waste residues, so that the waste residues abut against the abutting plate 55, the push plate 53 continues to push the waste residues and the abutting plate 55, the spring 56 is compressed, the limiting rod 57 abuts against the side wall of the end face of the branch pipe 52, and at the moment, the waste residues are compressed into blocks. The lower surface of the branch pipe 52 is provided with a strip-shaped groove 521 corresponding to the position of the waste slag at the moment, and the strip-shaped groove 521 is used for the waste slag to fall off. An inserting plate 58 is vertically and slidably arranged at a position, corresponding to the waste slag, on the branch pipe 52, the inserting plate 58 is used for extruding the waste slag out of the branch pipe 52, an air cylinder 59 is vertically arranged on the branch pipe 52, and a piston rod of the air cylinder 59 is fixedly connected with the inserting plate 58, so that the function of automatically driving the inserting plate 58 to move is realized.

Referring to fig. 3 and 5, after the slag is discharged from the branch pipe 52, the push plate 53 and the insert plate 58 are both returned, and the abutting plate 55 is pushed by the spring 56 to pass through the strip-shaped groove 521, so that the seawater is prevented from leaking from the strip-shaped groove 521 when the slag is discharged next time. The section of the lower end of the inserting plate 58 is triangular, the stroke and the position of the push plate 53 are unchanged, but the quantity of the waste slag is changed, so that the thickness of the waste slag block is also changed, and the triangular section of the lower end of the inserting plate 58 is always positioned between the resisting plate 55 and the push plate 53 in the process of sliding down the inserting plate 58. A material receiving barrel 6 is arranged under the push plate 53, and the material receiving barrel 6 is used for collecting waste residues.

Referring to fig. 1, the seawater filtering device 2 has two groups, one group is used for standby and the other group is in use, so that when the in-use seawater filtering device 2 is damaged, the standby seawater filtering device 2 is put into practical use immediately, thus preventing the fresh water from being interrupted.

Referring to fig. 6 and 7, the seawater infiltration apparatus 3 includes four infiltration pipes 31, and an infiltration membrane 32 fixed inside the infiltration pipes 31 in a diameter direction of the infiltration pipes 31. The permeation tube 31 is provided at both ends thereof with first and second connection tubes 33 and 34, respectively, and the first and second connection tubes 33 and 34 are located at both sides of the permeation membrane 32 in two groups. One end of the water outlet pipe 212, which is far away from the filter vat 22, is connected with the high-pressure pump 7, a water outlet of the high-pressure pump 7 is connected with a two-way electromagnetic valve 71, the first connecting pipe 33 is respectively connected with two water outlets of the two-way electromagnetic valve 71, and the two-way electromagnetic valve 71 is used for adjusting the high-pressure pump 7 to input seawater into different first connecting pipes 33. The fresh water collecting devices 4 are connected to the second connection pipes 34.

Referring to fig. 6 and 7, when the high pressure pump 7 inputs high pressure seawater into the first connection pipe 33 connected to the a region of the permeation tube 31, water molecules permeate through the permeation tube 32 from the a region of the permeation tube 31 into the B region of the permeation tube 31, and then fresh water flows from the B region of the permeation tube 31 into the second connection pipe 34 connected to the B region of the permeation tube 31 and enters the fresh water collecting device 4. A first discharge pipe 36 communicating with the permeate pipe 31 is provided on the permeate pipe 31 at the a-zone of the permeate pipe 31, the first discharge pipe 36 is used to discharge high concentration seawater, solenoid valves 38 are provided on the first discharge pipe 36 and on both the second connection pipes 34, and when fresh water flows from the a-zone of the permeate pipe 31 to the B-zone, the solenoid valve 38 on the second connection pipe 34 connected to the a-zone of the permeate pipe 31 is closed and the solenoid valves 38 on the first discharge pipe 36 and the second connection pipe 34 connected to the B-zone of the permeate pipe 31 are opened.

Referring to fig. 6 and 8, the permeable membrane 32 is blocked unidirectionally due to unidirectional filtration of seawater. When the two-way solenoid valve 71 changes the flow direction of the seawater, the high pressure pump 7 delivers the seawater to the zone B of the permeate pipe 31 through the first connection pipe 33 connected to the zone B of the permeate pipe 31, and then the fresh water passes through the permeate film 32 from the zone B of the permeate pipe 31 into the zone a of the permeate pipe 31, and then is delivered from the zone a of the permeate pipe 31 to the second connection pipe 34 connected to the zone a of the permeate pipe 31, and finally flows to the fresh water collecting device 4. At this time, the solenoid valve 38 of the second permeate pipe 31 connected to the section a of the permeate pipe 31 is opened, and the solenoid valve 38 of the first discharge pipe 36 and the solenoid valve 38 of the second permeate pipe 31 connected to the section B of the permeate pipe 31 are closed. A second discharge pipe 37 communicated with the B region of the permeation tube 31 is disposed at the B region of the permeation tube 31, the second discharge pipe 37 is used for discharging high-concentration seawater, a solenoid valve 38 is also disposed on the second discharge pipe 37, and the solenoid valve 38 is used for controlling the on/off of the second discharge pipe 37.

Referring to fig. 7, a check valve 39 is provided on the first connection pipe 33, and the check valve 39 is used to prevent backflow of seawater or fresh water.

Referring to fig. 6, the fresh water collecting means 4 is embodied as a water storage tank.

The action process is as follows: firstly, seawater is pumped into the filter vat 22 from the sea, and is centrifugally filtered by the filter vat 22, so that suspended substances and fixed particles in the seawater are filtered; then, the seawater is discharged from the water outlet pipe 212, and is delivered to the permeation pipe 31 through the high pressure pump 7, the water molecules pass through the permeation film 32 and flow from the second connection pipe 34 to the fresh water collecting device 4, and finally the high concentration seawater is discharged from the first discharge pipe 36 or the second discharge pipe 37.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a sea water desalination water treatment facilities, includes sea water filter equipment (2), sea water penetrant unit (3) and fresh water collection device (4) that set gradually, its characterized in that: the seawater filtering device (2) comprises a filtering box (21) and a filtering barrel (22) which are concentrically arranged and rotatably connected in the filtering box (21), wherein a water inlet pipe (211) and a water outlet pipe (212) are arranged on the filtering box (21), a spiral scraper (23) is rotatably connected in the filtering barrel (22), the scraper (23) is attached to the inner wall of the filtering barrel (22), rotating shafts (221) which are rotatably connected on the filtering box (21) are arranged at two ends of the filtering barrel (22), through holes (222) which are coaxial with the rotating shafts (221) are formed in the rotating shafts (221), a connecting shaft (231) is rotatably connected in the rotating shafts (221), the connecting shaft (231) extends into the filtering barrel (22) and is fixedly connected with the scraper (23), and a drainage cavity (214) and a slag discharge cavity (215) which are mutually separated are arranged between the filtering box (21) and the filtering barrel (22), the bottom of the filter barrel (22) is provided with a slag discharge port (225) communicated with the slag discharge cavity (215), the filter barrel (22) is provided with a discharge pipe (5) for discharging waste slag, the water outlet pipe (212) is communicated with the water discharge cavity (214), the water inlet pipe (211) is communicated with a rotating shaft (221) at the upper end, and the discharge pipe (5) is provided with a valve (50); a filter plate (51) for waste residues is arranged in the discharge pipe (5), two branch pipes (52) with closed end portions are arranged on the discharge pipe (5) along the diameter direction of the discharge pipe (5) and above the filter plate (51), a push plate (53) for pushing the waste residues to the other branch pipe (52) is arranged in one branch pipe (52) in a sliding mode, and a driving piece (54) for driving the push plate (53) to move back and forth is arranged on the branch pipe (52); keep away from push pedal (53) slide in branch pipe (52) and be equipped with to board (55), one side that push pedal (53) were kept away from in support board (55) is equipped with spring (56), support board (55) are gone up to be fixed to be equipped with to overlap and to establish gag lever post (57) in spring (56), the length of gag lever post (57) is less than spring (56) half of original length, the lower surface that lies in one side that discharge pipe (5) were kept away from in support board (55) on branch pipe (52) has seted up bar groove (521).

2. The seawater desalination water treatment apparatus according to claim 1, characterized in that: seawater penetration device (3) include a plurality of permeability tubes (31), set up osmotic membrane (32) in permeability tube (31) along the diameter direction of permeability tube (31), the both ends of permeability tube (31) are equipped with respectively first connecting pipe (33) and second connecting pipe (34) with osmotic membrane (32) both sides intercommunication, first connecting pipe (33) and seawater filter equipment (2) intercommunication, second connecting pipe (34) and fresh water collection device (4) intercommunication.

3. The seawater desalination water treatment apparatus according to claim 2, characterized in that: a high-pressure pump (7) is arranged between the water outlet pipe (212) and the first connecting pipe (33), and a one-way valve (39) for preventing water from flowing back to the water outlet pipe (212) is arranged on the first connecting pipe (33).

4. The seawater desalination water treatment apparatus according to claim 3, characterized in that: first connecting pipe (33) and second connecting pipe (34) are total two sets ofly, two sets of first connecting pipe (33) and second connecting pipe (34) distribute respectively in the both sides of osmotic membrane (32), the delivery port of high-pressure pump (7) is equipped with double-circuit solenoid valve (71), two first connecting pipe (33) all are connected with two delivery ports of double-circuit solenoid valve (71), fresh water collection device (4) are total two sets ofly and communicate with second connecting pipe (34) respectively, the both sides that lie in osmotic membrane (32) on osmotic pipe (31) are equipped with first discharge pipe (36) and second discharge pipe (37) that are used for discharging the high concentration sea water respectively, all be equipped with solenoid valve (38) on first discharge pipe (36), second discharge pipe (37) and second connecting pipe (34).

5. The seawater desalination water treatment apparatus according to claim 1, characterized in that: be equipped with thrust bearing (223) between the diapire of rose box (21) and the diapire of filter vat (22), pivot (221) overcoat is equipped with deep groove ball bearing (224), deep groove ball bearing (224) inlay and establish in the lateral wall of rose box (21).

6. The seawater desalination water treatment apparatus according to claim 1, characterized in that: be equipped with rubber circle (232) between connecting axle (231) and through-hole (222), be equipped with division board (213) between drainage chamber (214) and row sediment chamber (215), the upper and lower lateral wall of filter vat (22) is waterproof, be equipped with sealing washer (217) between the diapire of division board (213) and filter vat (22).

7. The seawater desalination water treatment apparatus according to claim 1, characterized in that: an inserting plate (58) used for ejecting waste residues out of the branch pipe (52) is vertically arranged above the strip-shaped groove (521) on the branch pipe (52) in a sliding mode, and an air cylinder (59) used for driving the inserting plate (58) to move up and down is arranged at one end, far away from the branch pipe (52), of the inserting plate (58).

8. The seawater desalination water treatment apparatus according to claim 1, characterized in that: the seawater filtering devices (2) are divided into two groups, and the two groups of seawater filtering devices (2) are communicated with the seawater penetration device (3).

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