CN203990312U - A kind of internal thread energy is used pump again - Google Patents

Abstract

The utility model belongs to sea water desalting equipment field, a kind of internal thread energy is used pump again, internal thread two-chamber pump integral body comprises internal thread pump body, spline power shaft, sucks internal thread end cap and back pressure internal thread end cap, there are respectively water pump spiral casing and spiral case in the described upper and lower both sides of internal thread pump body, on main body endoporus on described internal thread pump body, fix a pair of ceramic bearing cylindrical, ceramic bearing hole is fixed wtih spline spindle, and the upper and lower both sides of spline spindle are fixed wtih respectively water pump vane and water machine runner.It is airtight, convenient and swift that overall structure adopts internal thread to connect, can seepage discharging that sealing cone place forms that hard sealing ring can bear system pressure.Borrow the runner bucket layout angle on dampener runner to become 51 degree angles with the rotation of spline spindle, promote water machine runner with identical direction of rotation High Rotation Speed more, drive spline spindle rotary speed to improve 0.8 percentage point, shared variable-frequency motor load and reached 48%, realized and fallen energy object.

Description

A kind of internal thread energy is used pump again

Technical field

The utility model belongs to sea water desalting equipment field, and International Classification of Patents is B01D, is specifically related to a kind of internal thread energy about apparatus for energy recovery in reverse osmosis seawater desalination system and uses pump again.

Background technology

Lift first of contemporary marine economy on Tian Haizao island, and man-made island often self does not possess fresh water, does not have in other words enough fresh water, and desalinization is processed increasingly urgent, and the energy consumption cost of desalinization is subject to special concern.Early stage desalinization adopts the way of distillation, and as multi-stage flash evaporation technology, energy consumption, at 9.0kWh/m3, is only built the area that energy cost is very low in conventionally, as Middle East oil state or there is the available area of used heat.20 century 70 Reverse-osmosis Seawater Desalination Technologies drop into application, through updating.The process energy consumption 6.0kWh/m3 of the most reverse osmosis seawater desalination systems that built up in the past from the beginning of the eighties, its topmost improvement is that the Energy Efficient of the high-pressure thick salt solution after processing is recycled.

The fresh water purity obtaining through Reverse-osmosis Seawater Desalination Technology depends on the density of permeable membrane, and the higher fresh water purity obtaining of density is also higher, requires the seawater that participates in infiltration to bring up to higher pressure simultaneously.Therefore, energy recovery efficiency has become to reduce the key of desalinization cost.The pressure exchanger that the world today recycles at desalinization field liquid energy mainly exists a series of mechanical movement part and electrical equipment switching member, the higher final production cost that affects of maintenance rate.As: the reverse osmosis desalination device that Chinese patent Granted publication CN 101041484 B reclaim with energy; Chinese patent Granted publication CN 100341609 C reverse osmosis sea water desalting energy recovery device multiple tracks pressure switchers etc.The pressure exchanger that the world today recycles at desalinization field liquid energy mainly contains following two kinds:

1. traditional similar plunger displacement pump of piston hydraulic pressure cylinder structure; advantage is that liquid working medium does not directly contact with discarded highly pressurised liquid; peak efficiency can reach 95%; the piston of shortcoming hydraulic cylinder structure and piston rod self have very large friction power loss; the most difficult ideal effect that reaches of reciprocation sealing technology of piston rod particularly; actual efficiency is often lower than 90%, and particularly frictional dissipation causes that equipment downtime is frequent, maintenance cost is high.The patent No.: 201010122952.2, China's patent of invention of announcing on July 21st, 2010: differential energy recovery device and method for seawater desalination system, just belong to conventional piston hydraulic cylinder structure;

2. other form has in the world to desalinization input other developed country early, as: Germany, Japan, Britain, the U.S., Holland, Sweden, Norway and Denmark etc., all fail to obtain desirable, perfect structure aspect pressure-exchange, its actual exchange efficiency does not all have to surpass 75% yet, and conveyance system is huge, the control elements such as external electrical equipment driving and switch valve too much cause contingency frequently to occur, and finally cause the significantly extra charge such as increasing device investment and daily management maintenance.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of seawater desalination system special use is provided, can by discarded highly pressurised liquid energy again the female thread structure energy of conversion using use again pump.

A kind of internal thread energy is used pump again, internal thread two-chamber pump integral body comprises internal thread pump body, spline power shaft, suck internal thread end cap and back pressure internal thread end cap, there are respectively water pump spiral casing and spiral case in the described upper and lower both sides of internal thread pump body, on main body endoporus on described internal thread pump body, fix a pair of ceramic bearing cylindrical, ceramic bearing hole is fixed wtih spline spindle, the upper and lower both sides of spline spindle are fixed wtih respectively water pump vane and water machine runner, as improvement: there is internal thread outlet in the tangential direction perpendicular to described spline spindle on described water pump spiral casing, the pump cover step surface of the pump head stomidium of described water pump spiral casing and described suction internal thread end cap is detachable airtight fastening, on discharge sealing cone on described internal thread outlet, there is discharge internal thread, in tangential direction perpendicular to described spline spindle on described spiral case, have internal thread scavenge port, the cover step surface of the water machine stomidium of described spiral case and described back pressure internal thread end cap is detachable airtight fastening, on excretion sealing cone on described internal thread scavenge port, there is excretion internal thread, described suction female end covers internal thread suction inlet and becomes to be arranged vertically with described pump cover step surface central axis, described suction female end covers pump cover axis hole and becomes coaxially arranged with described pump cover step surface central axis, between described pump cover axis hole and described spline power shaft, be matched in clearance, in the packing seal groove on described pump cover axis hole, have sealing ring pushing described spline power shaft periphery, between the spline tooth axle of the spline perforation of described spline power shaft lower end and described spline spindle upper end, for axis, slidably coordinate, on the suction seal conical surface on described internal thread suction inlet, there is suction internal thread, described back pressure female end covers internal thread back pressure mouth and becomes coaxially arranged with described cover step surface central axis, on the back pressure sealing cone on described internal thread back pressure mouth, has back pressure internal thread.

As further improvement: there is housing internal thread described main body endoporus both sides respectively facing to described water pump spiral casing inner chamber and described spiral case inner chamber, described spline spindle water pump one side has pump bearing section successively, pump flat key section, pump thread segment and described spline tooth axle, water pump nut and the rotation of described pump thread segment are fastening, the described spline spindle hydraulic turbine one side is organic bearing section successively, machine thread segment and machine end optical axis, described a pair of ceramic bearing hole respectively with described pump bearing section cylindrical and described machine bearing section cylindrical interference fit, described a pair of ceramic bearing cylindrical and described main body endoporus interference fits, pair of bearings tight loop external screw thread and described housing internal thread regulate and are fixed wtih a pair of described ceramic bearing axial location, the runner internal thread of described water machine runner coordinates fastening with described machine thread segment spiral, the through hole inner circle of described water pump vane and described pump flat key section cylindrical interference fits, between the spline double wedge on the recessed tooth of spline in described spline perforation and described spline tooth axle, for being slidably matched, technique escape is arranged at the recessed tooth of described spline bottom.

As further improvement: the runner unthreaded hole of described runner internal thread bottom and described machine end optical axis are slidably matched, on described runner unthreaded hole, there are five runner screws, on described machine end optical axis, there are four optical axis pin-and-holes, retaining pin external thread section and the rotation of described runner screw are fastening, between described retaining pin straight pin section and described optical axis pin-and-hole for being slidably matched.

As further improvement: the recessed tooth depth of described spline is 57 to 59 millimeters, and the tooth two sides width of the described recessed tooth of spline is 7 to 8 millimeters, the tooth two sides port of the described recessed tooth of spline has the recessed tooth grooves of 1.2 * 45 degree; Described spline protruded tine length is 45 to 47 millimeters, the tooth two sides width of described spline double wedge is 7 to 8 millimeters, the tooth two sides port of described spline double wedge has the double wedge groove of 1.2 * 45 degree, between described spline double wedge and the described recessed tooth of spline, for being slidably matched, and leave crest clearance and internal diameter gap between described spline double wedge and the described recessed tooth of spline.

As further improvement: have 3 blind manipulation notches on described bearing tight loop one side end face.

The beneficial effects of the utility model are:

It is airtight, convenient and swift that overall structure adopts internal thread to connect.Wherein internal thread pump body adopts both sides Central Symmetry to be provided with water pump spiral casing and spiral case, and mass action power is balanced; Particularly the main body endoporus both sides on internal thread pump body are all provided with housing internal thread, adapted pair of bearings tight loop is adjusted instrument alignment function blind hole by socket wrench specially adapted for it and is adjusted to the right place, guarantee that water pump vane and water machine runner are along with a pair of ceramic bearing is accurately positioned at respectively among water pump spiral casing and spiral case, through experiment, show that its energy conversion efficiency is up to 68%; On the runner unthreaded hole of water machine runner, there are five runner screws corresponding with four optical axis pin-and-hole dislocation on machine end optical axis, guarantee that between the runner internal thread of water machine runner and machine thread segment, small rotation regulates, just can guarantee that retaining pin aims at runner screw and optical axis pin-and-hole simultaneously, realize water machine runner with respect to spline spindle, can bear positive and negative then can not unclamp, quick and safe; The utility model is also provided with the spline perforation that spline tooth axle and aluminium chromium closes power shaft and is slidably matched in the pump thread segment outer end of spline port main shaft, realized external impetus input; And technique push broach groove is arranged at the recessed tooth of described spline bottom, is convenient to process the recessed tooth of spline; The tooth two sides port of the described recessed tooth of spline has the recessed tooth groove of 1.2 * 45 degree, the tooth two sides port of described spline double wedge has the double wedge groove of 1.2 * 45 degree, and leave crest clearance and internal diameter gap between described spline double wedge and the described recessed tooth of spline, be convenient to assemble spline perforation while being convenient to and aim at importing with spline tooth axle, guarantee precision-fit transmitting large torque between the recessed tooth of spline double wedge and spline; The utility model has also been save the control elements such as all external electrical equipment drivings and switch valve, has avoided any electrical equipment contingency to occur, and finally reaches and significantly reduces investment and daily management maintenance cost.60% to the 70% high-pressure thick salt solution of particularly being held back by high density permeable membrane flows out from described trap water outlet, through back pressure pipeline, be injected in internal thread back pressure mouth and participate in power conversion, borrow the runner bucket layout angle on dampener runner to become 51 degree angles with the rotation of spline spindle, promote water machine runner with identical direction of rotation High Rotation Speed more, drive the rotary speed of spline spindle to improve 0.8 percentage point, shared variable-frequency motor load and reached 48%, realized and fallen energy object; Make by 6 degree, to drop to 3.2 degree through the process power consumption of every cube of fresh water that reverse osmosis seawater desalination system obtains.

Accompanying drawing explanation

Fig. 1 is the generalized section of internal thread two-chamber pump 60.

Fig. 2 is the schematic diagram that internal thread two-chamber pump 60 is applied in seawater desalination system.

Fig. 3 is internal thread pump body 61 generalized sections in Fig. 1.

Fig. 4 is suction internal thread end cap 41 generalized sections in Fig. 1.

Fig. 5 is back pressure internal thread end cap 81 generalized sections in Fig. 1.

Fig. 6 is bearing tight loop 75 generalized sections in Fig. 1.

Fig. 7 is bearing tight loop 75 top views in Fig. 6.

Fig. 8 is the local amplification profile schematic diagram of living in of the water pump nut 72 in Fig. 1.

Fig. 9 is the A-A profile in Fig. 8.

Figure 10 is the B-B profile in Fig. 8.

Figure 11 is the C-C profile in Fig. 8.

Figure 12 is the spline perforation 71 position enlarged drawings of spline power shaft 77 in Fig. 8.

Figure 13 is pump flat key section 34 and the spline tooth axle 31 position enlarged drawings of spline spindle 33 in Fig. 8.

Figure 14 is the local amplification profile schematic diagram of living in of the retaining pin 19 in Fig. 1.

Figure 15 is the D-D profile in Figure 14.

Figure 16 is the machine thread segment 36 position enlarged drawings of spline spindle 33 in Figure 14.

Figure 17 is the runner internal thread 26 position profiles of Figure 14 moderate water apparatus runner 88.

The specific embodiment

In conjunction with the accompanying drawings and embodiments structure of the present utility model and operation principle and the application in reverse osmosis seawater desalination system are further elaborated:

A kind of internal thread energy is used pump again, internal thread two-chamber pump 60 integral body comprise internal thread pump body 61, spline power shaft 77, suck internal thread end cap 41 and back pressure internal thread end cap 81, described internal thread pump body has respectively water pump spiral casing 67 and spiral case 66 in both sides Shang Xia 61, on main body endoporus 63 on described internal thread pump body 61, fix a pair of ceramic bearing 73 cylindricals, ceramic bearing 73 endoporus are fixed wtih spline spindle 33, spline spindle is fixed wtih respectively water pump vane 44 and water machine runner 88 in both sides Shang Xia 33, as improvement: have internal thread outlet 69 in the tangential direction perpendicular to described spline spindle 33 on described water pump spiral casing 67, the pump head stomidium 64 of described water pump spiral casing 67 is detachable airtight fastening with the pump cover step surface 46 of described suction internal thread end cap 41, on discharge sealing cone 53 on described internal thread outlet 69, there is the internal thread 55 of discharge, discharge internal thread 55 and be connected sealing with the external screw thread spiral on pressure duct 94 terminations, in tangential direction perpendicular to described spline spindle 33 on described spiral case 66, have internal thread scavenge port 82, the water machine stomidium 68 of described spiral case 66 is detachable airtight fastening with the cover step surface 86 of described back pressure internal thread end cap 81, on excretion sealing cone 83 on described internal thread scavenge port 82, have excretion internal thread 85, excretion internal thread 85 is connected sealing with the external screw thread spiral on drain line 28 terminations, on described suction internal thread end cap 41, there is internal thread suction inlet 65 to become to be arranged vertically with described pump cover step surface 46 central axis, on described suction internal thread end cap 41, there is pump cover axis hole 47 to become coaxially arranged with described pump cover step surface 46 central axis, between described pump cover axis hole 47 and described spline power shaft 77, be matched in clearance, in the packing seal groove 74 on described pump cover axis hole 47, have sealing ring pushing described spline power shaft 77 peripheries, between the spline tooth axle 31 of the spline perforation 71 of described spline power shaft 77 lower ends and described spline spindle 33 upper ends, for axis, slidably coordinate, on the suction seal conical surface 43 on described internal thread suction inlet 65, there is the internal thread 45 of suction, suck internal thread 45 and be connected sealing with the external screw thread spiral on low pressure line 56 terminations, on described back pressure internal thread end cap 81, there is internal thread back pressure mouth 89 to become coaxially arranged with described cover step surface 86 central axis, on back pressure sealing cone 93 on described internal thread back pressure mouth 89, have back pressure internal thread 95, back pressure internal thread 95 is connected sealing with the external screw thread spiral on back pressure pipeline 87 terminations.

As further improvement: there is housing internal thread 62 described main body endoporus 63 both sides respectively facing to described water pump spiral casing 67 inner chambers and described spiral case 66 inner chambers, described spline spindle 33 water pump one sides have pump bearing section 35 successively, pump flat key section 34, pump thread segment 32 and described spline tooth axle 31, water pump nut 72 is fastening with described pump thread segment 32 rotations, described spline spindle 33 hydraulic turbine one sides are organic bearing section 37 successively, machine thread segment 36 and machine end optical axis 39, described a pair of ceramic bearing 73 endoporus respectively with described pump bearing section 35 cylindricals and described machine bearing section 37 cylindrical interference fit, described a pair of ceramic bearing 73 cylindricals and described main body endoporus 63 interference fits, pair of bearings tight loop 75 external screw threads and described housing internal thread 62 regulate and are fixed wtih a pair of described ceramic bearing 73 axial locations, the runner internal thread 26 of described water machine runner 88 coordinates fastening with described machine thread segment 36 spirals, the through hole inner circle 22 of described water pump vane 44 and described pump flat key section 34 cylindrical interference fits, between spline double wedge 14 on the recessed tooth 13 of spline in described spline perforation 71 and described spline tooth axle 31, for being slidably matched, technique escape 18 is arranged at the recessed tooth of described spline 13 bottoms.

As further improvement: the runner unthreaded hole 29 of described runner internal thread 26 bottoms is slidably matched with described machine end optical axis 39, on described runner unthreaded hole 29, there are five runner screws 15, on described machine end optical axis 39, there are four optical axis pin-and-holes 16, retaining pin 19 external thread sections and 15 rotations of described runner screw are fastening, between described retaining pin 19 straight pin sections and described optical axis pin-and-hole 16 for being slidably matched.

As further improvement: recessed tooth 13 degree of depth of described spline are 57 to 59 millimeters, and the tooth two sides width of the recessed tooth 13 of described spline is 7 to 8 millimeters, the tooth two sides port of the recessed tooth 13 of described spline has the recessed tooth grooves 23 of 1.2 * 45 degree; Described spline double wedge 14 length are 45 to 47 millimeters, the tooth two sides width of described spline double wedge 14 is 7 to 8 millimeters, the tooth two sides port of described spline double wedge 14 has the double wedge groove 24 of 1.2 * 45 degree, between described spline double wedge 14 and the recessed tooth 13 of described spline, for being slidably matched, and leave crest clearance 17 and internal diameter gap 27 between described spline double wedge 14 and the described recessed tooth 13 of spline.

As further improvement: have 3 blind manipulation notches 76 on described bearing tight loop 75 1 side end faces.

In embodiment:

In the seawater desalination system of application internal thread two-chamber pump 60, also comprise: seabed filter 10, low-pressure pump 20, low-lift pump motor 30, pretreatment unit 50, reverse osmosis membrane assembly 90, active carbon adsorption tank 78 and drinking water holding vessel 79, between described seabed filter 10 and described low-pressure pump 20, there is low-lift pump suction pipe 21 to be connected, described low-pressure pump 20 power shafts are connecting described low-lift pump motor 30, between described low-pressure pump 20 and described pretreatment unit 50, there is low-lift pump comb 25 to be connected, between described pretreatment unit 50 and described internal thread suction inlet 65, there is the low pressure line 56 on described internal thread two-chamber pump 60 to be connected, kirsite power shaft 77 outer ends of described internal thread two-chamber pump 60 are being fixedly connected with variable-frequency motor 70 outputs, between the internal thread outlet 69 of described internal thread two-chamber pump 60 and the high-pressure inlet 96 of reverse osmosis membrane assembly 90 ante-chambers, be connected with pressure duct 94, between the internal thread back pressure mouth 89 of described internal thread two-chamber pump 60 and the trap water of reverse osmosis membrane assembly 90 ante-chambers outlet 98, be connected with back pressure pipeline 87, described internal thread scavenge port 82 places are connected to and on drain line 28, emit or as industrial salt raw material, the desalination water outlet 92 in described reverse osmosis membrane assembly chamber after 90s is connecting active carbon adsorption tank 78 and drinking water holding vessel 79 successively.Runner bucket 84 layout angle on described water machine runner 88 become 50 to 52 degree angles with described spline spindle 33 pivot axis, are preferably 51 degree.Recessed tooth 13 degree of depth of described spline are 58 millimeters, and the tooth two sides width of the recessed tooth 13 of described spline is 7.5 millimeters; Described spline double wedge 14 length are 46 millimeters, and the tooth two sides width of described spline double wedge 14 is 7.5 millimeters.

The course of work of the present utility model is as follows:

One, internal thread two-chamber pump 60 assemblings:

1. adopt a pair of ceramic bearing 73 is placed to the taking-up after lasting 50 to 58 minutes of 500 to 525 degree thermostatic chambers, within 3 minutes, a pair of ceramic bearing 73 of heating is enclosed within respectively to pump bearing section 35 and machine bearing section 37, waits and be cooled to whole being placed among the main body endoporus 63 on internal thread pump body 61 after normal temperature;

2. pair of bearings tight loop 75 is rotated in respectively on the housing internal thread 62 of main body endoporus 63 both sides, by socket wrench specially adapted for it, adjust instrument alignment function blind hole 76 and adjust to the right place, guarantee that water pump vane 44 and water machine runner 88 are accurately positioned at respectively among water pump spiral casing 67 and spiral case 66 simultaneously;

3. the runner internal thread 26 on water machine runner 88 coordinates pretension with 36 rotations of machine thread segment, 1 runner screw 15 and 16 pairs of any 1 optical axis pin-and-holes in 4 optical axis pin-and-holes 16 on machine end optical axis 39 in 5 runner screws 15 on runner unthreaded hole 29 are punctual, 15 rotations of retaining pin 19 external thread sections and runner screw are fastening, make between retaining pin 19 straight pin sections and described optical axis pin-and-hole 16 as being slidably matched.Just can guarantee that retaining pin 19 aims at runner screw 15 and optical axis pin-and-hole 16 simultaneously, realize water machine runner 88 and with respect to spline spindle 33, can bear positive and negative then can not unclamp quick and safe;

4. the cover step surface 86 of back pressure internal thread end cap 81 is aimed at the water machine stomidium 68 of described spiral case 66, and passes through respectively 12 through holes on cover step surface 86 with 12 screws, among airtight 12 screws that are fastened on water machine stomidium 68 peripheries;

5. the transmission flat key 11 that the keyway on water pump vane 44 through holes is aimed in pump flat key section 34 is pressed into, and makes the through hole inner circle 22 of water pump vane 44 and described pump flat key section 34 cylindrical interference fits;

6. water pump nut 72 is fastening with 32 rotations of pump thread segment;

7. the pump cover step surface 46 that sucks internal thread end cap 41 is aimed at the pump head stomidium 64 of water pump spiral casing 67, and passes through respectively 10 through holes on pump cover step surface 46 with 10 screws, among airtight 10 screws that are fastened on pump head stomidium 64 peripheries;

8. spline perforation 71 ecto-entads of spline power shaft 77 pass through the pump cover axis hole 47 sucking on internal thread end cap 41, use on pump cover axis hole 47 and have in packing seal groove 74 and have sealing ring pushing the 77 peripheries formation movable sealings of described spline power shaft; Utilize recessed tooth 13 ports of spline to have the recessed tooth grooves 23 of 1.2 * 45 degree, and spline double wedge 14 ports have the double wedge grooves 24 of 1.2 * 45 degree, spline perforation 71 is aimed at and imported on spline tooth axle 31, just can transmitting torque;

Two, internal thread two-chamber pump 60 pipelines connect:

By the discharge sealing cone 53 on described internal thread outlet 69 and discharge internal thread 55 and aim at also face with corresponding external screw thread on pressure duct 94 terminations and tighten, at described discharge sealing cone 53 places, form that hard sealing ring can bear system pressure and can seepage; Excretion sealing cone 83 on described internal thread scavenge port 82 and excretion internal thread 85 thereof are aimed to also face tighten with corresponding external screw thread on drain line 28 terminations, at described excretion sealing cone 83 places, form that hard sealing ring can bear system pressure and can seepage; By the suction seal conical surface 43 on described internal thread suction inlet 65 and suck internal thread 45 and aim at also face with corresponding external screw thread on low pressure line 56 terminations and tighten, at the described suction seal conical surface 43 places, form that hard sealing ring can bear system pressure and can seepage; Back pressure sealing cone 93 on described internal thread back pressure mouth 89 and back pressure internal thread 95 thereof are aimed at corresponding external screw thread on back pressure pipeline 87 terminations and face is tightened, at described back pressure sealing cone 93 places, formed that hard sealing ring can bear system pressure and can seepage;

Three, internal thread two-chamber pump 60 runnings:

Low-lift pump motor 30 outputs drive low-pressure pump 20 rotations, draw ebb seawater and after seabed filter 10, low-lift pump suction pipe 21, low-lift pump comb 25, are injected in pretreatment unit 50 successively standby; Start variable-frequency motor 70 high-power driving internal thread two-chamber pumps 60, variable-frequency motor 70 outputs are being fixedly connected with spline power shaft 77 upper ends, between the spline tooth axle 31 of the spline perforation 71 of spline power shaft 77 lower ends and described spline spindle 33 upper ends, for axis, slidably coordinate, drive described spline spindle 33 High Rotation Speeds; Then drive water pump vane 44 and water machine runner 88 High Rotation Speeds on spline spindle 33; Utilize the centrifugal force that water pump vane 44 High Rotation Speeds produce at flange suction inlet 65 places, to produce negative pressure, the seawater sucking in pretreatment unit 50 through low pressure line 56; Utilize the centrifugal force that water pump vane 44 High Rotation Speeds produce to produce high pressure at water pump spiral casing 67 places, the pressure of being discharged by flange outlet 69 is injected into reverse osmosis membrane assembly 90 ante-chambers by high-pressure inlet 96 again up to the high pressure sea water of 6MPa, after wherein 30% to 40% high pressure cleer sea water can permeate the high density permeable membrane 91 that has passed through reverse osmosis membrane assembly 90 and become and purify fresh water from the desalination water outlet 92 in reverse osmosis membrane assembly chamber after 90s out, be injected into after active carbon adsorption tank 78 purifies again, flow in drinking water holding vessel 79 standby.60% to the 70% high-pressure thick salt solution of being held back by high density permeable membrane 91 flows out and is injected into clip back pressure interface 89 from trap water outlet 98, act on the runner bucket 84 on spline spindle 33, borrow runner bucket 84 layout angle on dampener runner 88 to become 51 degree angles with the rotation of spline spindle 33, promote water machine runner 88 with identical direction of rotation High Rotation Speed more, drive the rotary speed of spline spindle 33 to improve 0.8 percentage point, shared variable-frequency motor 70 loads and reached 48%, realized and fallen energy object; 60% to 70% high-pressure thick salt solution after energy exchange is connected to drain line 28 from the internal thread scavenge port 82 of internal thread two-chamber pump 60 and emits or as industrial salt raw material, go round and begin again, continuous operation.It is airtight, convenient and swift that overall structure adopts internal thread to connect.Wherein internal thread pump body 61 adopts both sides Central Symmetry to be provided with water pump spiral casing 67 and spiral case 66, and mass action power is balanced; Particularly main body endoporus 63 both sides on internal thread pump body 61 are all provided with housing internal thread 62, adapted pair of bearings tight loop 75 is adjusted instrument alignment function blind hole 76 by socket wrench specially adapted for it and is adjusted to the right place, guarantee that water pump vane 44 and water machine runner 88 are accurately positioned at respectively among water pump spiral casing 67 and spiral case 66 simultaneously, through experiment, show that its energy conversion efficiency is up to 68%; The utility model has five runner screws 15 corresponding with four optical axis pin-and-holes, 16 dislocation on machine end optical axis 39 on the runner unthreaded hole 29 of water machine runner 88, guarantee that between the runner internal thread 26 of water machine runner 88 and machine thread segment 36, small rotation regulates, just can guarantee that retaining pin 19 aims at runner screw 15 and optical axis pin-and-hole 16 simultaneously, realize water machine runner 88 with respect to spline spindle 33, can bear positive and negative then can not unclamp, quick and safe.The utility model is also provided with spline tooth axle 31 and is slidably matched with the spline perforation 71 that aluminium chromium closes power shaft 77 in pump thread segment 32 outer ends of spline port main shaft 33, realized external impetus input; And technique push broach groove 18 is arranged at the recessed tooth of described spline 13 bottoms, is convenient to process the recessed tooth 13 of spline; The tooth two sides port of the recessed tooth 13 of described spline has the recessed tooth groove 23 of 1.2 * 45 degree; the tooth two sides port of described spline double wedge 14 has the double wedge groove 24 of 1.2 * 45 degree; and leave crest clearance 17 and internal diameter gap 27 between described spline double wedge 14 and the described recessed tooth 13 of spline; be convenient to assemble spline perforation 71 while being convenient to and aim at importing with spline tooth axle 31, guarantee precision-fit transmitting large torque between the recessed tooth 13 of spline double wedge 14 and spline.The utility model has also been save the control elements such as all external electrical equipment drivings and switch valve, has avoided any electrical equipment contingency to occur, and finally reaches and significantly reduces investment and daily management maintenance cost.60% to the 70% high-pressure thick salt solution of particularly being held back by high density permeable membrane 91 flows out from described trap water outlet 98, through back pressure pipeline 87, be injected into 89 li, internal thread back pressure mouth and participate in power conversion, borrow runner bucket 84 layout angle on dampener runner 88 to become 51 degree angles with the rotation of spline spindle, promote water machine runner with identical direction of rotation High Rotation Speed more, drive spline spindle rotary speed to improve 0.8 percentage point, shared variable-frequency motor load and reached 48%, realized and fallen energy object; Make by 6 degree, to drop to 3.2 degree through the process power consumption of every cube of fresh water that reverse osmosis seawater desalination system obtains.

Claims (5)

1. an internal thread energy is used pump again, internal thread two-chamber pump (60) integral body comprises internal thread pump body (61), spline power shaft (77), suck internal thread end cap (41) and back pressure internal thread end cap (81), there are respectively water pump spiral casing (67) and spiral case (66) in the upper and lower both sides of described internal thread pump body (61), upper fixing a pair of ceramic bearing (73) cylindrical of main body endoporus (63) on described internal thread pump body (61), ceramic bearing (73) endoporus is fixed wtih spline spindle (33), the upper and lower both sides of spline spindle (33) are fixed wtih respectively water pump vane (44) and water machine runner (88), it is characterized in that: in the upper tangential direction perpendicular to described spline spindle (33) of described water pump spiral casing (67), have internal thread outlet (69), the pump head stomidium (64) of described water pump spiral casing (67) is detachable airtight fastening with the pump cover step surface (46) of described suction internal thread end cap (41), on discharge sealing cone (53) on described internal thread outlet (69), there is discharge internal thread (55), in the upper tangential direction perpendicular to described spline spindle (33) of described spiral case (66), have internal thread scavenge port (82), the water machine stomidium (68) of described spiral case (66) is detachable airtight fastening with the cover step surface (86) of described back pressure internal thread end cap (81), on excretion sealing cone (83) on described internal thread scavenge port (82), there is excretion internal thread (85), on described suction internal thread end cap (41), there is internal thread suction inlet (65) to become to be arranged vertically with described pump cover step surface (46) central axis, on described suction internal thread end cap (41), there is pump cover axis hole (47) to become coaxially arranged with described pump cover step surface (46) central axis, between described pump cover axis hole (47) and described spline power shaft (77), be matched in clearance, in the packing seal groove (74) on described pump cover axis hole (47), have sealing ring pushing described spline power shaft (77) periphery, between the spline tooth axle (31) of the spline perforation (71) of described spline power shaft (77) lower end and described spline spindle (33) upper end, for axis, slidably coordinate, on the suction seal conical surface (43) on described internal thread suction inlet (65), there is suction internal thread (45), on described back pressure internal thread end cap (81), there is internal thread back pressure mouth (89) to become coaxially arranged with described cover step surface (86) central axis, on the back pressure sealing cone (93) on described internal thread back pressure mouth (89), have back pressure internal thread (95).

2. a kind of internal thread energy according to claim 1 is used pump again, it is characterized in that: there is housing internal thread (62) described main body endoporus (63) both sides respectively facing to described water pump spiral casing (67) inner chamber and described spiral case (66) inner chamber, described spline spindle (33) water pump one side has pump bearing section (35) successively, pump flat key section (34), pump thread segment (32) and described spline tooth axle (31), water pump nut (72) rotates fastening with described pump thread segment (32), described spline spindle (33) hydraulic turbine one side is organic bearing section (37) successively, machine thread segment (36) and machine end optical axis (39), described a pair of ceramic bearing (73) endoporus respectively with described pump bearing section (35) cylindrical and described machine bearing section (37) cylindrical interference fit, described a pair of ceramic bearing (73) cylindrical and described main body endoporus (63) interference fits, pair of bearings tight loop (75) external screw thread and described housing internal thread (62) regulate and are fixed wtih a pair of described ceramic bearing (73) axial location, the runner internal thread (26) of described water machine runner (88) coordinates fastening with described machine thread segment (36) spiral, the through hole inner circle (22) of described water pump vane (44) and described pump flat key section (34) cylindrical interference fits, between spline double wedge (14) on the recessed tooth of spline (13) in described spline perforation (71) and described spline tooth axle (31), for being slidably matched, technique escape (18) is arranged at the recessed tooth of described spline (13) bottom.

3. a kind of internal thread energy according to claim 2 is used pump again, it is characterized in that: the runner unthreaded hole (29) of described runner internal thread (26) bottom is slidably matched with described machine end optical axis (39), on described runner unthreaded hole (29), there are five runner screws (15), on described machine end optical axis (39), there are four optical axis pin-and-holes (16), retaining pin (19) external thread section and described runner screw (15) rotate between fastening, described retaining pin (19) straight pin section and described optical axis pin-and-hole (16) for being slidably matched.

4. a kind of internal thread energy according to claim 2 is used pump again, it is characterized in that: the recessed tooth of described spline (13) degree of depth is 57 to 59 millimeters, the tooth two sides width of the recessed tooth of described spline (13) is 7 to 8 millimeters, and the tooth two sides port of the recessed tooth of described spline (13) has the recessed tooth groove (23) of 1.2 * 45 degree; Described spline double wedge (14) length is 45 to 47 millimeters, the tooth two sides width of described spline double wedge (14) is 7 to 8 millimeters, the tooth two sides port of described spline double wedge (14) has the double wedge groove (24) of 1.2 * 45 degree, between described spline double wedge (14) and the described recessed tooth of spline (13), for being slidably matched, and leave crest clearance (17) and internal diameter gap (27) between described spline double wedge (14) and the described recessed tooth of spline (13).

5. a kind of internal thread energy according to claim 2 is used pump again, it is characterized in that: on described bearing tight loop (75) one side end faces, have 3 blind manipulation notches (76).