CN107701389A - Fluid pressure pick-up device and equipment - Google Patents
Fluid pressure pick-up device and equipment Download PDFInfo
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- CN107701389A CN107701389A CN201711044617.3A CN201711044617A CN107701389A CN 107701389 A CN107701389 A CN 107701389A CN 201711044617 A CN201711044617 A CN 201711044617A CN 107701389 A CN107701389 A CN 107701389A
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- fluid
- conveying
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- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/06—Energy recovery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/107—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
- F04B9/1076—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring with fluid-actuated inlet or outlet valve
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a kind of fluid pressure pick-up device, including：Conveying cylinder, it which is provided with conveying inlet and conveying liquid outlet；Conveying mechanism, there is ball screw and be arranged on ball screw one end and the conveying plunger extended in conveying cylinder；Drive mechanism, driving conveying mechanism move back and forth along the axial direction of conveying cylinder；Fluid cylinder is returned, which is provided with back liquid opening；And control unit, motor is controlled to carry out rotating operation, wherein, conveying mechanism, which also has to be arranged on the ball screw other end and extend to back in fluid cylinder, returns fluid column plug, liquid opening is returned with the pressure fluid outlet in pressure fluid processing equipment to be connected, so that the pressure fluid discharged in pressure fluid processing equipment enters back fluid cylinder by pressure fluid outlet, and then apply pressure to back on the surface of fluid column plug, the energy regenerating for taking press liquid is realized while fluid pressure pick-up is carried out.
Description
Technical field
The present invention relates to a kind of liquid transporting apparatus, and in particular to a kind of fluid pressure pick-up device and equipment.
Background technology
Reverse osmosis technology is one of mainstream technology of current desalinization, and its principle is as shown in Figure 5：Reverse osmosis treatment equipment
200 include a housing 201, are internally provided with reverse osmosis membrane 202, seawater is delivered into reverse osmosis membrane by sea intake 204
202 side, hydrone is forced to pass through while obstructing impurity allowing reverse osmosis membrane 202, you can to obtain flowing from water outlet 205
The fresh water gone out.Meanwhile remaining seawater forms concentrated seawater, discharged from the concentrated seawater of the homonymy of sea intake 204 outlet 206.
In order to complete the conveying of seawater, store and delivery pump 203 is installed between the tank and freshwater plant of former seawater.Instead
The aperture of permeable membrane 202 is minimum can to pass through hydrone, it is necessary to apply larger pressure to seawater side, therefore above-mentioned
Delivery pump 203, which is required to provide certain discharge pressure, just can guarantee that being smoothed out for desalination by reverse osmosis process.
In the prior art, centrifugal pump and plunger pump can realize liquid pressure-increasing unit.Wherein, the principle of centrifugal pump is profit
Sucked liquid with vacuum and be pressurized output, its output pressure is limited, therefore has to when pressure requirements are higher using multistage
Mode associated with centrifugal pump, cost are high, difficult in maintenance and less efficient.Plunger pump drives plunger in conveying cylinder using drive mechanism
Interior reciprocating motion so that plunger draws liquid into or extruded conveying cylinder, and it can reach higher discharge pressure, therefore in reverse osmosis
Had a good application prospect in permeable system.
Traditional plunger pump structure as shown in figure 4, the plunger pump 300 include conveying cylinder 301, motor 302, eccentric wheel (or
Bent axle) 303, rocking arm 306, connecting rod 304 and plunger 305.During operation, motor 302 passes through eccentric wheel 303, rocking arm 306 and connecting rod
304 gearing driving plunger 305 moves back and forth in conveying cylinder 301.One end of conveying cylinder 301 is provided with two check valves,
One opens and another is opened to outside conveying cylinder into conveying cylinder.When plunger pump work, plunger 305 is in conveying cylinder 301
Move back and forth so that negative pressure or malleation are produced in conveying cylinder 301, allows liquid to be conveyed to be inhaled into conveying cylinder 301 by check valve
Or it is forced out conveying cylinder 301.
In above-mentioned plunger pump, conveying the pressure of liquid needs persistently to do work to maintain by motor.When needing, offer height is defeated
During pressurization pressure, motor needs to provide higher power to make plunger overcome pressure so as to which liquid to be conveyed be extruded；Also, run
During motor need to be always maintained at such high power, not only high energy consumption, is also easily damaged.
Further, in pressure fluid processing equipment as reverse osmosis treatment equipment 200, due to the sea of reverse osmosis membrane 202
It is always maintained at elevated pressures on water side surface, partial moisture in seawater oozes out through the interstitial void of film under pressure
Fresh water output is formed, the pressure of the process losses is smaller (about 10% or so), therefore it exports the dense sea of 206 discharges from concentrated seawater
Water still has higher pressure (about 90% or so of the pressure of sea intake 204).If this carries the high pressure of big energy
Concentrated seawater is expelled directly out, then a large amount of energy losses can be caused (to be calculated by fresh-water recovery rate 40%, discharge energy accounts for import energy
50%~60%), make the energy consumption of counter-infiltration system increase, cause obtain fresh water cost increase substantially.In the prior art,
Generally use installs energy-recuperation system to reduce the energy consumption of counter-infiltration system.
The energy-recuperation system of technology is divided into two classes at present：One kind is " fluid non-contact device ", and another kind of is that " fluid connects
Touch device ".But either which kind of energy-recuperation system, following drawback be present：
1st, need outside high-pressure pump, separately increase a set of independent energy recycle device, it is complicated, investment is big, safeguard,
Operating cost is high.
2nd, " fluid is non-contact " class energy recycle device will be carried by impeller, axle etc mechanical device in concentrated seawater
Energy, conversion pass to high-pressure pump main shaft, and the power consumption for reducing high-pressure pump main shaft reaches the purpose of energy regenerating, the energy of device
It is low to measure transformation efficiency, and flow by concentrated seawater, pressure influence are big, when flow-reduction to a certain extent when will lose energy and return
Produce effects fruit.
3rd, " fluid is non-contact " class energy recycle device is driven by carrying the concentrated seawater of pressure, and fresh seawater is conveyed
To high pressure pump output terminal, the output flow by reducing high-pressure pump reaches the purpose to recover energy, need to energy recycle device with
Booster pump is installed, to balance the pressure differential between two water routes, it is invested, and big, control system is complicated, and effect between high-pressure pump
Flow, pressure influence by concentrated seawater is big.
4th, operation, the maintenance requirement of energy-recuperation system are high, need professional and technical personnel to repair, therefore mostly medium-and-large-sized
Just install in counter-infiltration system, and be rarely employed in small-sized (below 200 tons of fresh water of daily output) sea water desalinating unit, therefore small-sized sea
Water desalination apparatus is generally low without energy-recuperation system, energy utilization efficiency.
The content of the invention
To solve the problems, such as the liquid high pressure pick-up in counter-infiltration system and discharge concentrated water energy regenerating, there is provided one kind can have
The fluid pressure pick-up device and equipment of pressure recovery liquid energy are imitated, present invention employs following technical scheme：
The invention provides a kind of fluid pressure pick-up device, for entering to the liquid to be conveyed of pressure fluid processing equipment
Row pressure-increasing unit, pressure fluid processing equipment are handled the liquid to be conveyed after pressure-increasing unit and discharge pressure fluid, its
It is characterised by, including：Conveying cylinder, it which is provided with conveying inlet and conveying liquid outlet；Conveying mechanism, have ball screw and
It is arranged on ball screw one end and the conveying plunger extended in conveying cylinder；Drive mechanism, including carry out rotating operation
Motor and the nut for making rotating rotary motion under motor driving, nut, which is connected through a screw thread, to be enclosed on ball screw, is driven
Dynamic conveying mechanism moves back and forth along the axial direction of conveying cylinder so that liquid to be conveyed from conveying inlet be inhaled into conveying cylinder or
Conveying cylinder is forced out from conveying liquid outlet；Fluid cylinder is returned, which is provided with back liquid opening；And control unit, control motor are carried out just
Reversion operation, wherein, conveying mechanism, which also has to be arranged on the ball screw other end and extend to back in fluid cylinder, returns fluid column plug,
Return liquid opening with the pressure fluid outlet in pressure fluid processing equipment to be connected so that discharge in pressure fluid processing equipment
Pressure fluid enters back fluid cylinder by pressure fluid outlet, and then applies pressure to back on the surface of fluid column plug, is carrying out liquid
While body pressure transmits, the energy regenerating for taking press liquid is realized.
Liquid transformation conveyer provided by the invention, there can also be such technical characteristic, wherein, conveying mechanism is
Split type, conveying plunger, ball screw and time fluid column plug sequentially coaxially are fixedly connected.
Liquid transformation conveyer provided by the invention, can also have such technical characteristic, wherein, conveying cylinder it is interior
The conveying plunger sealing washer being in contact with conveying plunger is provided with wall, is provided with the inwall of time fluid cylinder and connects with returning fluid column plug
Tactile returns fluid column plug sealing ring.
Liquid transformation conveyer provided by the invention, there can also be such technical characteristic, wherein, convey inlet
Place is provided with liquid feed valve, conveys and is provided with liquid valve at liquid outlet.
Liquid transformation conveyer provided by the invention, there can also be such technical characteristic, wherein, liquid feed valve is fair
Perhaps for liquid from the outside check valve flowed to inside conveying cylinder, liquid valve is to allow liquid from conveying cylinder inside stream to the unidirectional of outside
Valve.
Liquid transformation conveyer provided by the invention, there can also be such technical characteristic, wherein, liquid feed valve and go out
Liquid valve is the magnetic valve being turned on and off under the control of control unit.
Liquid transformation conveyer provided by the invention, there can also be such technical characteristic, wherein, return liquid opening
Provided with the two-position three way magnetic valve under the control of control unit.
Liquid transformation conveyer provided by the invention, there can also be such technical characteristic, wherein, return on fluid cylinder also
Provided with second time liquid opening, for the liquid discharge formed after the pressure fluid release pressure that will return in fluid cylinder, return liquid opening and
Second time liquid opening is respectively equipped with the magnetic valve being turned on and off under the control of control unit.
Present invention also offers a kind of fluid pressure pick-up equipment, it is characterised in that including：The liquid of multiple as above any one
Body pressure transmitter device, the plurality of fluid pressure pick-up device is parallel with one another, wherein, the control of multiple fluid pressure pick-up devices
Portion is same control unit, and the control unit is controlled to the drive mechanism in fluid pressure pick-up device, makes each liquid pressure
The conveying process of conveying mechanism in power pick-up device is different, so that the conveying minimal pressure of each fluid pressure pick-up device
Power appears in different time points.
Invention effect and effect
According to fluid pressure pick-up equipment provided by the invention, because fluid pressure pick-up device therein has conveying cylinder
With return fluid cylinder, and return fluid cylinder be provided with back liquid opening, can allow pressure fluid flow into thus by its pressure be applied to back liquid work
Beyond the Great Wall and then it is transferred on conveyor piston, therefore the fluid pressure in pressure fluid processing equipment can be utilized, reaches recovery energy
The effect of amount.Further, the pressure of pressure fluid is to be back to back after fluid cylinder to be loaded directly into returning liquid piston and passing by pipeline
It is handed on conveyor piston, it is not necessary to just can be directly into conveying mechanism offer power, during it almost by any change
There is no energy loss, therefore the ultrahigh in efficiency that the fluid pressure pick-up equipment of the present embodiment recovers energy.
There is the nut that the ball screw with conveying mechanism is screwed so that motor is transported in the present invention, in drive mechanism
Conveying mechanism integrally moves back and forth under the drive of nut during row, i.e., should present invention employs the drive mechanism of Ball screw type
Structure can realize the bi-directional of power using the efficient thrust of ball screw assembly, therefore it can realize conveying liquid
Efficiently realize energy regenerating simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the fluid pressure pick-up equipment of the embodiment of the present invention；
Fig. 2 is the sectional structure chart of the fluid pressure pick-up equipment of the embodiment of the present invention；
Fig. 3 is the sectional structure chart of the fluid pressure pick-up device of the embodiment of the present invention；
Fig. 4 is the pipeline structure schematic diagram of the fluid pressure pick-up equipment of the present embodiment；
Fig. 5 is the fundamental diagram of reverse osmosis equipment；
Fig. 6 is the plunger pump structure schematic diagram of prior art.
Embodiment
Illustrate the embodiment of the present invention below in conjunction with accompanying drawing.
<Embodiment>
Fig. 1 is the structural representation of the fluid pressure pick-up equipment of the embodiment of the present invention, and Fig. 2 is the liquid of the embodiment of the present invention
The sectional structure chart of body pressure inverting equipment.
As shown in Figures 1 and 2, the fluid pressure pick-up equipment 100 of the present embodiment includes two fluid pressure pick-up devices
10th, support 20 and control unit (not shown).
Wherein, two fluid pressure pick-up devices 10 are arranged on support 20, and control unit is used for fluid pressure pick-up
Associated components in device 10 send control signal, so as to control and coordinate the operation of fluid pressure pick-up device 10.
Fig. 3 is the sectional structure chart of the fluid pressure pick-up device of the embodiment of the present invention.
As shown in Figure 1, Figure 2 and Figure 3, fluid pressure pick-up device 10 includes conveying cylinder 11, conveying mechanism 12, drive mechanism
13rd, fluid cylinder 14 and protective cover 15 are returned.
Conveying cylinder 11 is cylindrical, is vertically arranged, and its upper end cover 11C is provided with conveying inlet 11A and conveying liquid outlet
11B.Liquid feed valve is provided with conveying inlet 11A, liquid valve is provided with (in liquid feed valve and liquid valve figure not at conveying liquid outlet 11B
Show).In the present embodiment, to allow check valve of the liquid externally to the internal circulation of conveying cylinder 11, liquid valve is liquid feed valve
The check valve for allowing liquid to be circulated from the interior of conveying cylinder 11.
Return fluid cylinder 14 it is cylindrical, be vertically arranged and positioned at conveying cylinder 11 lower section.Return fluid cylinder 14 and conveying cylinder 11 is same
Axle is set, i.e. the axis of the two is on same straight line.
The bottom end cover 14B for returning fluid cylinder 14 is provided with one time liquid opening 14A, and the liquid returned in fluid cylinder 14 is opened from this time liquid
Mouth 14A disengaging.
Conveying mechanism 12 is vertically arranged, and coaxial (below by conveying cylinder 11, time fluid cylinder with conveying cylinder 11 and time fluid cylinder 14
14 and conveying mechanism 12 axis direction be referred to as axially).
In the present embodiment, conveying mechanism 12 is that segmented is shaft-like, has the conveying plunger sequentially coaxially being fixedly connected
12A, ball screw 12B and time fluid column plug 12C.Wherein, conveying plunger 12A is located at top, and its upper end extends upwardly to conveying cylinder
In 11；Ball screw 12B is located at middle part, and its upper end is fixedly connected with conveying plunger 12A lower end；Go back to fluid column plug 12C upper end
It is fixedly connected with ball screw 12B lower end, this time fluid column plug 12C lower end is extended downward into back in fluid cylinder 14.
Conveying plunger 12A external diameter is suitable with the internal diameter of conveying cylinder 11, and the bottom inwall of conveying cylinder 11 is provided with sealing
Enclose 11D so that sealed between the bottom and conveying plunger 12A, liquid can not be revealed at this.
Correspondingly, it is suitable with the internal diameter for returning fluid cylinder 14 to return fluid column plug 12C external diameter, and the upper end of this time fluid cylinder 14 is provided with close
Seal 14C so that sealed between the upper end and time fluid column plug 12C.
Ball screw 12B is located at conveying cylinder 11 and returned between fluid cylinder 14, and its lateral surface has helicitic texture.
Drive mechanism 13 includes nut 131, motor 132 and driving belt 133.
The inner surface of nut 131 is provided with the helicitic texture corresponding with ball screw 12B, and the nut 131 is connected through a screw thread
It is enclosed on ball screw 12B, so as to form the drive mechanism of Ball screw type.Motor 132 is arranged on support 20, positioned at rolling
Ballscrew 12B side.Driving belt 133 is cased with the output end and nut 131 of motor 132, is constituted the drive of motor 132
Power is transferred to the belt drive component of nut 132 so that motor 132 can drive nut 131 to rotate when working, so as to drive
Ball screw 12B is axially moveable.Due to being to be fixedly connected between each constituting portion point of conveying mechanism 12, therefore work as ball wire
When bar 12B is axially moveable, conveying mechanism 12 is just correspondingly overall to be moved in the axial direction.That is, when nut 131 is in the He of motor 132
It is circumferential along ball screw 12B under the driving of belt drive component (gear-driven assembly can also be used in other embodiments)
During rotation, ball screw 12B is just driven and for linear motion vertically by nut 131, and rotation torque caused by motor 132 is turned
Ball screw 12B axial thrust is turned to, and the axial thrust is passed into conveying plunger 12A and returns fluid column plug 12C, to conveying
Liquid pressing in cylinder 11, highly pressurised liquid is set to be exported from conveying liquid outlet 11B.
The control unit of the present embodiment is the PLC control units for being provided with default control program, and used motor 132 is to watch
Motor is taken, therefore rotation direction can be changed according to the control signal that control unit is sent.When control unit is according to default control
When sending to routines periodically the signal for changing rotation direction, motor 132 correspondingly changes rotation direction and (that is, periodically entered
Row rotating campaign), nut 131 is accordingly changed rotation direction (that is, accordingly carrying out rotating rotary motion), finally make
The entirety of conveying mechanism 12 is obtained axially periodically to move back and forth.
Protective cover 15 is around forming in ball screw 12B peripheries and being fixed on support 20, for ball screw 12B etc.
Structure forms protection.
The fluid pressure pick-up equipment 100 of the present embodiment is used to increase the liquid to be conveyed of pressure fluid processing equipment
Pressure conveying.Wherein, pressure fluid processing equipment is handled the liquid to be conveyed after pressure-increasing unit, and discharges pressure fluid,
The pressure fluid processing equipment at least has a conveying liquid-inlet and pressure fluid outlet.
Below in conjunction with accompanying drawing, the application of Fig. 5 delivery pump 203 is used as using the fluid pressure pick-up equipment 100 of the present embodiment
Exemplified by situation, illustrate the operation principle of the fluid pressure pick-up device 10 of the present embodiment.
Fig. 4 is the pipeline structure schematic diagram of the fluid pressure pick-up equipment of the present embodiment, and the arrow in Fig. 4 is liquid flowing
Direction.
As shown in figure 4, the fluid pressure pick-up equipment 100 of the present embodiment is combined with reverse osmosis equipment 200, one is formd
Counter-infiltration system.
Wherein, two fluid pressure pick-up devices 10 of fluid pressure pick-up equipment 100 are parallel with one another.That is, two liquid
In pressure transmitter device 10, identical liquid entrance is connected by pipeline, for example, two conveying inlet 11A are mutual
Connect (not showing parallel pipeline in Fig. 4) so that the seawater in tank is respectively simultaneously into this two conveying inlet 11A；
Two conveying liquid outlet 11B are interconnected so that are converged from the liquid of conveying liquid outlet 11B outflows for all the way.In addition, counter-infiltration is set
Standby 200, which are provided with two identical concentrated seawaters, exports 206, two return liquid opening 14A respectively by two triple valve 14D and this two
The individual connection of concentrated seawater outlet 206, because concentrated seawater outlet 206 is located at the homonymy of reverse osmosis membrane 202 in reverse osmosis equipment 200,
The concentrated seawater that it flows out is identical, therefore it is interconnected to be also considered as this two in this case to return liquid opening 14A.Separately
Outside, triple valve 14D one outlet also connects with waste liquid discharge line, therefore triple valve 14D can cause back liquid opening 14A
It is communicated to concentrated seawater and exports 206 waste liquid discharge lines, so as to allow concentrated seawater to enter back fluid cylinder 14 by this time liquid opening 14A, or
The liquid allowed back in fluid cylinder 14 is discharged by this time liquid opening 14A.
In the present embodiment, triple valve 14D is two-position three way magnetic valve, and the two-position three way magnetic valve is also electrically connected with control unit
Connect, thus on and off can be carried out to liquid under the control of control unit.
As described above, conveying mechanism 12 can under the driving of drive mechanism 13 axially (i.e. upper and lower in Fig. 4
To) move back and forth.
When conveying mechanism 12 moves down, it makes to form negative pressure in conveying cylinder 11, allows seawater from tank by defeated
Inlet 11A is sent to be inhaled into conveying cylinder 11；When conveying mechanism 12 moves up, conveying plunger 12A is also moved up therewith, from
And apply pressure to the seawater in conveying cylinder 11, and it is extruded into conveying cylinder 11 from conveying liquid outlet 11B, then entered by seawater
The seawater sides that mouth 204 is flowed into housings 201.Thus, seawater just completes course of conveying at conveying cylinder 11.
When desalination by reverse osmosis process just starts, the inside of reverse osmosis equipment 200 does not have liquid.Control unit is to triple valve 14D
It is controlled, allows back liquid opening 14A to keep exporting with concentrated seawater and 206 connect, and start drive mechanism 13, then seawater is from tank
The seawater side being transported to via above-mentioned course of conveying in housing 201.Because now seawater pressure is also not reaching to counter-infiltration
It is required that therefore will not form fresh water, then seawater almost all passes through and returns liquid opening 14A and enter from the outflow of concentrated seawater outlet 206
Return inside fluid cylinder 14, and be full of back fluid cylinder 14.
When the inside of time fluid cylinder 14 is full of seawater, drive mechanism 13 keeps work, and seawater is constantly transported to from tank
In housing 201.Because triple valve 14D keeps back liquid opening 14A and the connected state of concentrated seawater outlet 206, seawater is constantly from defeated
The seawater side part and return fluid cylinder 14 that cylinder 11 enters in housing 201 are sent, finally can not but be flowed out from returning in fluid cylinder 14, therefore return
Inside, the seawater side part in housing 201 and the seawater pressure inside conveying cylinder 11 of fluid cylinder 14 are continuous in course of conveying
Rise.
When the seawater of the seawater side of reverse osmosis equipment 200 reaches pressure needed for counter-infiltration, it forms light through reverse osmosis membrane
Water, flowed out from water outlet 205.Simultaneously as foring fresh water, pressure of the seawater on reverse osmosis membrane 202 has to a certain degree
Loss, i.e., concentrated seawater outlet 206 at pressure be less than sea intake 204.
When reaching above-mentioned state, the concentrated seawater of the outflow of concentrated seawater outlet 206 of reverse osmosis equipment 200 has higher pressure
Power.Because the lower end of conveying mechanism 12 is located at back in fluid cylinder 14, its pressure is applied to conveyer by the higher concentrated seawater of the pressure
On the rear surface of structure 12.Thus, for conveying mechanism 12 when moving up to seawater progress pressure-increasing unit, its upper end face is to defeated
The seawater in cylinder 11 is sent to apply pressure, while rear surface is also bearing the concentrated seawater pressure from concentrated seawater outlet 206, both sides
Pressure differential it is relatively small (equivalent to the pressure loss of the seawater at reverse osmosis membrane 202).Therefore, such state is being reached
Afterwards, conveying mechanism 12 only needs less power output to keep being smoothed out for course of conveying when conveying seawater.In addition,
Under this state, control unit can be controlled to triple valve 14D, allow concentrated seawater to be discharged suitably by liquid opening 14A is returned.By
This, concentrated seawater just completes one in time fluid cylinder 14 and returns liquid process.
After reaching stable state, control unit enters line program to the direction of rotation of motor 132 and triple valve 14D connected state
Control, ensure：When motor 132 starts to rotate forward (that is, conveyor piston 12A makees water suction operation from top to bottom), triple valve 14D will be returned
Liquid opening 14A connects with waste liquid discharge line, the decompression liquid in fluid cylinder 14 (is formed after pressure fluid release pressure
Liquid) discharge；When motor 132 runs to stroke end, starts inverted running, (that is, conveyor piston 12A makees pressure water from bottom to top
Operation), triple valve 14D, which will return liquid opening 14A and concentrated seawater and export 206, to be connected, and makes carrying pressure in reverse osmosis equipment 200
Liquid enters back fluid cylinder 14, and the surface for returning liquid piston 12C is pressed.The operation that control unit controlled motor 132 is so gone round and begun again,
It is achieved thereby that carry out energy regenerating to taking press liquid (i.e. concentrated seawater) while output pressure liquid.
As described above, the liquid transformation conveying equipment 100 when the present embodiment and the pressure as desalination by reverse osmosis equipment 200
When the combination of power liquid treatment equipment is so as to form fluid pressure processing system, conveyor piston 12A applies pressure to liquid to be conveyed
So as to complete pressure-increasing unit, meanwhile, go back to liquid piston 12C surfaces and certain pressure is applied with by pressure fluid, pass the Simultaneous Pressure
It is handed at conveyor piston 12A so that conveyor piston 12A bears reaction force and pressure fluid institute from conveying liquid simultaneously
The pressure of application, the difference of two pressure are about the pressure differential at the reverse osmosis membrane 202 of reverse osmosis equipment 200.Therefore, motor
132 power outputs for needing offer to be enough to overcome the pressure differential can keep whole liquid conveying and the progress of processing procedure.
In addition, in the present embodiment, control unit is believed the control transmitted by the motor 132 of two fluid pressure pick-up devices 10
Number there is certain phase difference so that within the same cycle of operation two motors 132 rotation direction on the contrary, so as to allow two it is defeated
The motion of mechanism 12 is sent on the contrary, and then making opposite (that is, the fluid pressure of the progress of work of two fluid pressure pick-up devices 10
When pick-up device 10 extrude the process of liquid, another fluid pressure pick-up device 10 suck the process of liquid).By
This, the output pressure minimum point of two fluid pressure pick-up devices 10 has appeared in different time points.
Embodiment acts on and effect
The fluid pressure pick-up equipment provided according to the present embodiment, because fluid pressure pick-up device therein has conveying
Cylinder and time fluid cylinder, and return fluid cylinder and be provided with back liquid opening, pressure fluid can be allowed to flow into so as to which its pressure is applied to back into liquid
On piston and then it is transferred on conveyor piston, therefore the fluid pressure in pressure fluid processing equipment can be utilized, reaches recovery
The effect of energy.Further, the pressure of pressure fluid is to be back to back after fluid cylinder to be loaded directly into returning liquid piston simultaneously by pipeline
It is transferred on conveyor piston, it is not necessary to just can be several during it directly into conveying mechanism offer power by any change
There is no energy loss, therefore the ultrahigh in efficiency that the fluid pressure pick-up equipment of the present embodiment recovers energy.
There is the nut that the ball screw with conveying mechanism is screwed so that motor in the present embodiment, in drive mechanism
Conveying mechanism integrally moves back and forth under the drive of nut during operation, i.e., the present embodiment employs the transmission knot of Ball screw type
Structure, the structure can to realize the bi-directional of power, (that is, rotating nuts can be by moment of torsion height using the efficient thrust of ball screw assembly,
Effect is converted into the thrust of screw mandrel；Conversely, drive screw also can be reachable by the moment of torsion that thrust Efficient Conversion is nut, transmission efficiency
More than 95%), therefore it can coordinate while conveying liquid is realized with above-mentioned time liquid mechanism, so as to efficiently realize energy
Recovery.If using the eccentric wheel and bar linkage structure of conventional piston pump, it is difficult to reach energy because torque transmission efficiency is low
The purpose of recovery.In addition, conventional screw mandrel-nut structure (screw mandrel-nut structure of i.e. non-Ball screw type) can not realize power
Bi-directional, therefore conveying liquid and energy regenerating can not be realized, only using the ball wire in the embodiment of the present invention
Bar type structure effectively could carry out energy regenerating while realizing and conveying liquid.
In the present embodiment, triple valve is magnetic valve, and the motor in drive mechanism is servomotor, therefore can be in control unit
Control under co-ordination so that liquid delivery process and return liquid process be smoothed out.For example, the hypertonia at reverse osmosis membrane
When, control unit meeting adjust automatically motor speed, pressure remained steady is returned liquid liquid outlet.
In conventional plunger pump of the prior art, due to realizing transmission by eccentric wheel and connecting rod, its torque angle is not
Disconnected change, therefore plunger can not remain a constant speed motion, discharge pressure are to fluctuate that (that is, output pressure goes out on a timeline all the time
Now it is similar to the waveform of sine wave).Compared with above-mentioned conventional plunger pump, the torque of the Ball screw type drive mechanism of the present embodiment
Angle is constant, therefore conveying mechanism and plunger can be made to be peaked with close state motion at the uniform velocity, its output pressure
After being capable of held stationary (that is, the waveform similar to square wave occurs on a timeline in output pressure).
In traditional plunger pump, it will be unable to produce liquid output when sucking liquid in conveying cylinder, i.e., it is now empty for output
Working days.In the fluid pressure pick-up equipment of the present embodiment, two fluid pressure pick-up devices are parallel with one another, and motor therein
Controlled, therefore respective motor can be controlled by control unit by control unit, allow the fortune of two conveying mechanisms
It is dynamic in opposite direction, so that the progress of work between two fluid pressure pick-up devices is on the contrary, and then allow fluid pressure pick-up
Liquid output between device mutually makes up and eliminates the output neutral gear phase.So fluid pressure pick-up equipment energy of the present embodiment
It is enough to be applied to the pressure fluid processing equipment high to conveying sustainable requests.
In addition, in the present embodiment, the motor in drive mechanism is fully located at conveying cylinder and goes back to the outside of fluid cylinder, therefore dismounts
And maintenance is all more convenient.
Above-described embodiment is only used for illustrating the embodiment of the present invention, and the fluid pressure pick-up of the present invention fills
Put and be not limited to scope described by above-described embodiment.
For example, in the various embodiments described above, conveying cylinder, conveying mechanism and time fluid cylinder are vertically arranged, but in the present invention, conveying
Cylinder, conveying mechanism and time fluid cylinder can also be horizontally disposed with or be set according to actual conditions along other directions.In addition, in embodiment,
Conveying cylinder, conveying mechanism and time fluid cylinder are coaxial, but in the present invention, three can not also coaxially, as long as its axis is mutually equal
OK, the action of conveying mechanism is not influenceed.
In above-described embodiment, conveying mechanism is segmented, but in the present invention, conveying mechanism can also be integrally formed
's.
Conveying liquid outlet and conveying inlet are respectively provided with check valve, but in the present invention, these positions can also set by
The magnetic valve of control unit control, it, which opens and closes to be formed with liquid conveying process, coordinates.
In embodiment, return fluid cylinder only be provided with one return liquid opening, its by triple valve come control pressure liquid enter or
Outflow.But an opening, i.e. second time liquid opening can also be set again by the present invention, returning on fluid cylinder so that two are returned liquid and opened
Mouth can allow pressure fluid to flow into and out respectively, and in this case, returning liquid opening and second time liquid opening can be not provided with
Three-way solenoid valve, but the general solenoid valve for controlling and coordinating by control unit is set respectively.
In addition, the fluid pressure pick-up equipment of embodiment includes two fluid pressure pick-up devices in parallel, but the present invention
Fluid pressure pick-up equipment can also include the fluid pressure pick-up device of more multi-parallel, in this case, fluid pressure becomes
It can be same control unit to send the control unit in device, i.e., whole fluid pressure pick-up equipment can only set a control
Portion, the control unit are controlled to the motor in each fluid pressure pick-up device, magnetic valve etc. simultaneously, make each fluid pressure
Pick-up device co-ordination.
Single fluid pressure pick-up device in embodiment can also be used as equipment for liquid transportation application, but single assembly
The output neutral gear phase can not be eliminated, therefore suitable for the less demanding pressure fluid processing equipment of output continuity.
Claims (9)
- A kind of 1. fluid pressure pick-up device, for carrying out pressure-increasing unit, institute to the liquid to be conveyed of pressure fluid processing equipment State pressure fluid processing equipment to handle the liquid to be conveyed after pressure-increasing unit and discharge pressure fluid, its feature exists In, including：Conveying cylinder, it which is provided with conveying inlet and conveying liquid outlet；Conveying mechanism, there is ball screw and be arranged on described ball screw one end and extend to defeated in the conveying cylinder Send plunger；Drive mechanism, including carry out the motor of rotating operation and make the nut of rotating rotary motion under motor driving, The nut, which is connected through a screw thread, to be enclosed on the ball screw, drives axial direction of the conveying mechanism along the conveying cylinder back and forth It is mobile, so that the liquid to be conveyed is inhaled into the conveying cylinder or from the conveying liquid outlet from the conveying inlet It is forced out the conveying cylinder；Fluid cylinder is returned, which is provided with back liquid opening；AndControl unit, the motor is controlled to carry out the rotating operation,Wherein, the conveying mechanism also has time for being arranged on the ball screw other end and extending in described time fluid cylinder Fluid column plug,Described time liquid opening is connected with the pressure fluid outlet in the pressure fluid processing equipment so that the pressure fluid The pressure fluid discharged in processing equipment enters described time fluid cylinder by pressure fluid outlet, and then pressure is applied In on the surface of described time fluid column plug, while fluid pressure transmission is carried out, the energy regenerating for taking press liquid is realized.
- 2. liquid transformation conveyer according to claim 1, it is characterised in that：Wherein, the conveying mechanism is split type,Conveying plunger, the ball screw and the described time fluid column plug sequentially coaxially are fixedly connected.
- 3. liquid transformation conveyer according to claim 2, it is characterised in that：Wherein, the conveying plunger sealing washer being in contact with the conveying plunger is provided with the inwall of the conveying cylinder,Time fluid column plug sealing ring being in contact with described time fluid column plug is provided with the inwall of described time fluid cylinder.
- 4. fluid pressure pick-up device according to claim 1, it is characterised in that：Wherein, liquid feed valve is provided with the conveying inlet, liquid valve is provided with the conveying liquid outlet.
- 5. fluid pressure pick-up device according to claim 4, it is characterised in that：Wherein, the liquid feed valve is to allow liquid to flow to the check valve inside the conveying cylinder from outside,The liquid valve is permission liquid from the conveying cylinder inside stream to the check valve of outside.
- 6. fluid pressure pick-up device according to claim 4, it is characterised in that：Wherein, the liquid feed valve and the liquid valve are the magnetic valve being turned on and off under the control of the control unit.
- 7. fluid pressure pick-up device according to claim 1, it is characterised in that：Wherein, described time liquid opening is provided with the two-position three way magnetic valve under the control of the control unit.
- 8. fluid pressure pick-up device according to claim 1, it is characterised in that：Wherein, second time liquid opening is additionally provided with described time fluid cylinder, for the pressure fluid in described time fluid cylinder to be discharged The liquid discharge formed after pressure,Described time liquid opening and second time liquid opening are respectively equipped with what is be turned on and off under the control of the control unit Magnetic valve.
- A kind of 9. fluid pressure pick-up equipment, it is characterised in that including：Multiple such as fluid pressure pick-up devices according to any one of claims 1 to 8, the plurality of fluid pressure pick-up device phase It is mutually in parallel,Wherein, the control unit of the multiple fluid pressure pick-up device is same control unit, and the control unit is to the liquid The drive mechanism in body pressure transmitter device is controlled, and makes the conveying in each fluid pressure pick-up device The conveying process of mechanism is different so that the conveying minimum pressure of each fluid pressure pick-up device appear in it is different Time point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711044617.3A CN107701389A (en) | 2017-10-31 | 2017-10-31 | Fluid pressure pick-up device and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044617.3A CN107701389A (en) | 2017-10-31 | 2017-10-31 | Fluid pressure pick-up device and equipment |
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| CN107701389A true CN107701389A (en) | 2018-02-16 |
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| CN201711044617.3A Pending CN107701389A (en) | 2017-10-31 | 2017-10-31 | Fluid pressure pick-up device and equipment |
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