CN211370632U - High-pressure water pump with adjustable pressure for sea water desalination - Google Patents
High-pressure water pump with adjustable pressure for sea water desalination Download PDFInfo
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- CN211370632U CN211370632U CN201921173914.2U CN201921173914U CN211370632U CN 211370632 U CN211370632 U CN 211370632U CN 201921173914 U CN201921173914 U CN 201921173914U CN 211370632 U CN211370632 U CN 211370632U
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Abstract
The utility model discloses a high pressure water pump with adjustable pressure for sea water desalination, including a cylinder body that has airtight cavity, be provided with low pressure sea water district import and high-pressure drainage district export on this cylinder body, be provided with the compressor arrangement who compresses into the water under high pressure with low pressure in this cylinder body, this compressor arrangement is connected with the power drive transmission. The piston hole is axially and annularly distributed, so that the volume of the original high-pressure water pump is reduced under the condition of not changing the performance; the cylindrical structure is adopted, so that the space occupancy of the high-pressure water pump in the seawater desalination device is reduced; the duplex stainless steel is adopted, so that the corrosion resistance and the fatigue strength are good, and the service cycle of the water pump is prolonged; the flow uniformity of the water pump in working is ensured; the influence of the deviation generated when the water pump works on the normal work of the water pump is avoided; the loss of the main shaft energy is reduced; the volume of the pressurization cavity is changed by changing the position of the adjusting top plug, so that the use with different performances under different working conditions is realized.
Description
Technical Field
The invention relates to a high-pressure water pump, in particular to a pressure-adjustable high-pressure water pump used in the field of reverse osmosis seawater desalination treatment.
Background
The seawater desalination method comprises a freezing method, an electrodialysis method, a distillation method and a reverse osmosis method, wherein the reverse osmosis method is mainly used at present, and rapidly occupies the market due to the advantages of simple equipment, easy maintenance and modularization; the reverse osmosis method is a method in which a reverse osmosis membrane is used to allow high-pressure seawater to permeate through the reverse osmosis membrane to generate fresh water, and a power source for applying pressure to the seawater in a reverse osmosis system is a high-pressure water pump.
At present, most of domestic widely applied high-pressure water pumps are radial plunger type, and under the condition of ensuring the performance, the high-pressure water pumps are large in size and long in pressurizing stroke, and the whole size of the seawater desalination device is increased; the main parts in the pump body are common stainless cylinders, and the corrosion resistance and the fatigue strength of the pump body are lower than those of an inlet water pump; the flow uniformity in working is lower than that of the inlet water pump; the long-time operation can cause certain internal stress on a high-pressure part of the pump body, so that the water pump can not work normally, and a water inlet and a water outlet of the water pump are positioned at the rear side or the rear end of the cylinder body, so that the loss of energy transmitted by the main shaft is increased; the performance limitation is large, the device is only suitable for a single field, and the flow pressure cannot be adjusted according to different working conditions.
Disclosure of Invention
The invention aims to solve the problem of providing a pressure-adjustable high-pressure water pump for seawater desalination, which reduces the occupied space of a pump body and works by utilizing the volume change generated by the reciprocating motion of a plunger piston surrounding a transmission shaft in a plunger piston hole.
In order to solve the problems, the invention adopts the following technical scheme:
a high-pressure water pump with adjustable pressure for seawater desalination comprises a cylinder body with a closed cavity, wherein a low-pressure seawater area inlet and a high-pressure drainage area outlet are formed in the cylinder body, a compression device for compressing low-pressure water into high-pressure water is arranged in the cylinder body, and the compression device is in transmission connection with a power driving device.
The following is a further optimization of the present invention to the above scheme:
the compression device comprises a piston cylinder body with a circular cross section structure, a plurality of compression chambers are uniformly arranged on the piston cylinder body in an annular mode, the piston cylinder body can rotate around the axis of the piston cylinder body, and when the piston cylinder body rotates, the compression chambers can be respectively communicated with the inlet of the low-pressure seawater area and the outlet of the high-pressure drainage area.
Further optimization: the plurality of compression chambers are respectively provided with a piston, one end of each piston is positioned in the compression chamber, and the other end of each piston is arranged in the closed chamber of the cylinder body and is in transmission connection with the power driving device.
Further optimization: the power driving device comprises a main shaft which is coaxial with the cylinder body, one end of the main shaft extends out of the cylinder body, and the other end of the main shaft is arranged in a sealed cavity of the cylinder body and is in transmission connection with the pistons in the plurality of compression cavities.
Further optimization: the cylinder body is characterized in that an inclined table which is obliquely arranged with the axis of the cylinder body is arranged in the closed chamber of the cylinder body, a fixed disc which is attached to the inclined table is arranged on one side, close to the piston, of the inclined table, a plurality of piston seats which correspond to the pistons one to one are arranged on the fixed disc, and the rear end of each piston is connected with the corresponding piston seat.
Further optimization: the fixed disc is sleeved on the main shaft, a spherical hinge is arranged between the fixed disc and the main shaft, and the spherical hinge, the fixed disc and the main shaft are respectively fixedly connected and can rotate along with the main shaft; a spring is arranged between one end of the spherical hinge and the piston cylinder body.
Further optimization: the cylinder body includes well back cylinder body and rear end cap of body coupling, well back cylinder body keeps away from the one end of rear end cap and has well jar and front end cap in proper order sealing connection, and wherein one end and the rear end cap of main shaft rotate to be connected, and the other end stretches out the outside of front end cap.
Further optimization: the low-pressure seawater area inlet and the high-pressure drainage area outlet are respectively arranged at opposite positions on the middle cylinder, a water distribution plate and a lining plate are sequentially arranged between the piston cylinder body and the middle cylinder, and a friction pair is arranged between the water distribution plate and the lining plate.
Further optimization: the water distribution plate and the lining plate are respectively provided with a low-pressure pretreatment area and a high-pressure conversion low-pressure area at the positions corresponding to the inlet of the low-pressure seawater area and the outlet of the high-pressure drainage area.
Further optimization: the rear end cover is provided with a plurality of adjusting devices which can be used for adjusting the inclination angle of the tilting table.
Further optimization: the adjusting device comprises an adjusting plunger piston, one end of the adjusting plunger piston is movably connected with the inclined table, a cavity with an opening at one end is formed in the adjusting plunger piston, an adjusting top plug is arranged in the cavity, an adjusting spring and a radial cushion block are arranged between the top end of the adjusting top plug and the adjusting plunger piston, and the other end of the adjusting plunger piston is fixed outside the rear end cover through an adjusting stud.
When the high-pressure water pump works normally, the motor drives the main shaft, the spherical hinge and the fixed disc to rotate, and the fixed disc rotates to drive the piston and the piston cylinder to rotate together;
under the cooperation of the main shaft and the spring, the cavities corresponding to the eight pistons and the piston cylinder body move along the plane of the inclined end of the rear end cover, and the space between the pistons and the cavities of the piston cylinder body is increased to form negative pressure, so that the water is sucked from a low-pressure seawater area at the front end of the main shaft of the pump body by the pistons and the piston cylinder body;
the seawater enters a seawater primary pressurizing area through a friction pair between the lining plate and the water distribution plate, and the seawater in the seawater primary pressurizing area of the lining plate is compressed to generate pressure because the space between the piston and the piston cylinder body is gradually reduced;
at the moment, compressed seawater is transferred to the high-pressure drainage area through the high-pressure pulse area in the low-high pressure conversion area E under the action of the rotation of the main shaft and the spring and the friction side effect formed by the lining plate and the water distribution plate, so that the process of converting the seawater into the high-pressure seawater is realized.
When high-pressure seawater enters the high-pressure drainage area, the diagonal piston is driven by the rotation of the main shaft to rotate in the piston cylinder body to the high-low pressure conversion area F, and seawater in the low-pressure seawater area is sucked into the space between the piston and the piston cylinder body again to be compressed and pressurized.
When needing to adjust pressure under the operating mode of difference, loosen the locking mother, loosen adjusting screw, then revolve the adjusting screw of upper end to suitable position along the clockwise, lower extreme adjusting screw adjusts along anticlockwise, makes the sloping platform slope to suitable position to realize volumetric change, thereby control the pressure regulation of water pump.
By adopting the scheme, the invention has the following advantages:
1. the piston hole is axially and annularly distributed, so that the volume of the original high-pressure water pump is reduced under the condition of not changing the performance;
2. the outer cylinder body adopts a cylindrical structure, so that the space occupancy of the high-pressure water pump in the seawater desalination device is reduced;
3. the parts of the invention adopt duplex stainless steel, have good corrosion resistance and fatigue strength, and prolong the service cycle of the water pump;
4. the piston and the piston hole are in sliding fit, so that the flow uniformity of the water pump during working is ensured;
5. the fixed disc and the piston are matched by adopting spherical surfaces, so that the influence of deviation generated when the water pump works on the normal work of the water pump is avoided;
6. the water inlet and outlet are positioned at the front end cover, so that the energy loss of the main shaft is reduced;
7. the tilting disk is hinged and adjusted, and the volume of the pressurizing cavity is changed by changing the position of the adjusting top plug, so that the tilting disk can be used under different performances under different working conditions.
The invention is further illustrated by the following figures and examples.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a piston cylinder in an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a water distribution plate in an embodiment of the invention;
fig. 4 is a schematic structural diagram of a liner plate in an embodiment of the invention.
In the figure: 1-rear end cap; 2-a rear bearing; 3-a first spacer sleeve; 4-a first seal; 5, fixing the disc; 6-spherical hinge; 7-a spring; 8-a piston; 9-a piston cylinder; 10-middle rear cylinder body; 11-water distribution plate; 12-a lining plate; 13-a second seal; 14-a second spacer; 15-a front bearing; 16-middle cylinder; 17-mechanical sealing; 18-a third seal; 19-front end cap; 20-a main shaft; 21-front end cap bearing; 22-a clamp spring; 23-through bolt; 26-a piston seat; 27-a tilting table; 28-adjusting the plunger; 29-radial spacer blocks; 30-adjusting a spring; 31-adjusting the top plug; 32-adjusting studs; 33-a lock nut; a-a low pressure seawater area; b, a seawater primary pressurizing area; c-a seawater secondary supercharging region; d-a high-pressure drainage area; e-high voltage switching low voltage region; f-low pressure pretreatment area.
Detailed Description
In the embodiment, as shown in fig. 1, a pressure-adjustable high-pressure water pump for seawater desalination comprises a cylinder body with a closed cavity, wherein the cylinder body is provided with a low-pressure seawater area a inlet and a high-pressure drainage area D outlet, a compression device for compressing low pressure water into high-pressure water is arranged in the cylinder body, and the compression device is in transmission connection with a power driving device.
The compression device comprises a piston cylinder body 9 with a circular structure in cross section, a plurality of compression chambers are uniformly arranged on the piston cylinder body 9 in an annular mode, the piston cylinder body 9 can rotate around the axis of the piston cylinder body, and when the piston cylinder body 9 rotates, the compression chambers can be respectively communicated with the inlet of the low-pressure sea water area A and the outlet of the high-pressure drainage area D.
A seawater primary pressurizing area B is formed in the compression chamber close to the inlet of the low-pressure seawater area A on the piston cylinder body 9, and a seawater secondary pressurizing area C is formed in the compression chamber close to the outlet of the high-pressure drainage area D.
The plurality of compression chambers are respectively provided with a piston 8, one end of each piston 8 is positioned in the compression chamber, and the other end of each piston 8 is arranged in the closed chamber of the cylinder body and is in transmission connection with the power driving device.
The power driving device comprises a main shaft 20 which is coaxial with the cylinder body, one end of the main shaft 20 extends out of the cylinder body, and the other end of the main shaft 20 is arranged in a sealed cavity of the cylinder body and is in transmission connection with the pistons 8 in the plurality of compression cavities.
The cylinder body includes well rear cylinder body 10 and rear end cap 1 of integral connection, well rear cylinder body 10 keeps away from rear end cap 1's one end sealing connection has well jar 16 and front end cap 19 in proper order, and wherein one end and rear end cap 1 of main shaft 20 rotate and are connected, and the other end stretches out the outside of front end cap 19.
The middle cylinder 16 and the middle rear cylinder 10 are sealed through a second sealing piece 13; the middle cylinder 16 is sealed with the front end cover 19 by a third seal member 18.
The rear end cover 1 is provided with a rear pressure plate outside, and the rear pressure plate and the front end cover 19 are fixed through a through bolt 23.
An inclined table 27 which is obliquely arranged with the axis of the cylinder body is arranged in the closed chamber of the cylinder body, a fixed disc 5 which is attached to the inclined table 27 is arranged on one side, close to the piston 8, of the inclined table 27, a plurality of piston seats 26 which are in one-to-one correspondence with the pistons 8 are arranged on the fixed disc 5, and the rear end of each piston 8 is connected with the corresponding piston seat 26.
The fixed disk 5 is sleeved on the main shaft 20, a spherical hinge 6 is arranged between the fixed disk 5 and the main shaft 20, and the spherical hinge 6 is fixedly connected with the fixed disk 5 and the main shaft 20 respectively and can rotate along with the main shaft 20.
A spring 7 is arranged between one end of the spherical hinge 6 and the piston cylinder 9. One end of the main shaft 20 is rotatably connected with the rear end cover 1 through a rear bearing 2, and a first spacer 3 is sleeved on the main shaft 20 at a position between the rear bearing 2 and the spherical hinge 6.
The middle position of the main shaft 20 is rotatably connected with the middle cylinder 16 through a front bearing 15, and a second spacer 14 is arranged between the main shaft 20 and the water distribution plate 11 and the lining plate 12.
The inlet of the low-pressure seawater area A and the outlet of the high-pressure drainage area D are respectively arranged at opposite positions on the middle cylinder 16, a water distribution plate 11 and a lining plate 12 are sequentially arranged between the piston cylinder body 9 and the middle cylinder 16, and a friction pair is arranged between the water distribution plate 11 and the lining plate 12.
As shown in fig. 2, 3 and 4, the water distribution plate 11 and the lining plate 12 are respectively provided with a low-pressure pretreatment area F and a high-pressure conversion low-pressure area E at positions corresponding to the inlet of the low-pressure seawater area a and the outlet of the high-pressure drainage area D; the low-pressure pretreatment area F is communicated with a low-pressure seawater area A and a seawater primary pressurizing area B, and the high-pressure conversion low-pressure area E is communicated with a high-pressure drainage area D and a seawater secondary pressurizing area C.
The rear end cover 1 is provided with a plurality of adjusting devices which can be used for adjusting the inclination angle of the inclined platform 27.
The adjusting device comprises an adjusting plunger 28, one end of the adjusting plunger 28 is movably connected with the inclined platform 27, a chamber with one open end is arranged in the adjusting plunger 28, an adjusting top plug 31 is arranged in the chamber, an adjusting spring 30 and a radial cushion block 29 are arranged between the top end of the adjusting top plug 31 and the adjusting plunger 28, and the other end of the adjusting plunger is fixed outside the rear pressure plate through an adjusting stud 32 and a locking nut 33.
The adjusting plunger 28 is sealed with the rear end cover 1 through the first sealing element 4.
In the above embodiment, eight pistons 8 may be used.
When the high-pressure water pump works normally, the motor drives the main shaft 20, the spherical hinge 6 and the fixed disc 5 (the spherical hinge 6 and the fixed disc 5 are matched in a spherical surface way) to rotate, and the fixed disc 5 rotates to drive the piston 8 and the piston cylinder 9 to rotate together;
under the common cooperation of the main shaft 20 and the spring 7, the cavities corresponding to eight pistons 8 and the piston cylinder 9 move along the inclined end plane of the rear end cover 1, the space between the cavities of the pistons 8 and the piston cylinder 9 is increased to form negative pressure, and the water is sucked from a low-pressure seawater area A at the front end of the main shaft of the pump body by the pistons 8 and the piston cylinder 9;
the seawater enters a seawater primary pressurizing area B through a friction pair between a lining plate 12 and a water distribution plate 11, and the seawater in the seawater primary pressurizing area B of the lining plate is compressed to generate pressure because the space between a piston 8 and a piston cylinder 9 is gradually reduced;
at this time, the compressed seawater is transferred to the high-pressure drainage region D through the high-pressure pulse region C in the low-pressure and high-pressure conversion region E under the action of the rotation of the main shaft 20 and the spring 7 and the friction side effect formed by the lining plate 12 and the water distribution plate 11, so that the process of converting the seawater into the high-pressure seawater is realized.
When high-pressure seawater enters the high-pressure drainage area D, the diagonal piston 8 is driven by the rotation of the main shaft 20 to rotate in the high-low pressure conversion area F through the piston cylinder 9, and the seawater in the low-pressure seawater area A is sucked into the space between the piston 8 and the piston cylinder 9 again to be compressed and pressurized.
When needing to adjust pressure under different operating modes, will lock female 33 and loosen adjusting screw 32, then revolve the adjusting screw 32 of upper end to suitable position along the clockwise, lower extreme adjusting screw 32 adjusts along the anticlockwise, makes the tilting table 27 slope to suitable position to realize the change of volume, thereby control the pressure regulation of water pump.
Because the plunger piston and the plunger piston hole are both circular parts, the plunger piston can achieve high precision matching in processing, so that the volume efficiency is high, the operation is stable, the flow uniformity is good, and the noise is low; because the inclination angle of the tilting table can be adjusted, the tilting table can be suitable for working under different working conditions.
Having shown and described the basic principles and essential features of the invention and its advantages, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof, and it is therefore intended that the embodiments be considered as illustrative and not restrictive in all respects, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, any reference signs in the claims being therefore intended to be embraced therein.
Claims (10)
1. The utility model provides a high pressure water pump with adjustable pressure for sea water desalination, includes a cylinder body that has airtight cavity, its characterized in that: the cylinder body is provided with a low-pressure seawater area (A) inlet and a high-pressure drainage area (D) outlet, a compression device for compressing low-pressure water into high-pressure water is arranged in the cylinder body, and the compression device is in transmission connection with the power driving device;
the power driving device comprises a main shaft (20) coaxial with the cylinder body, one end of the main shaft (20) extends out of the cylinder body, and the other end of the main shaft is arranged in a sealed cavity of the cylinder body;
the closed cavity of the cylinder body is internally provided with an inclined platform (27) which is obliquely arranged with the axis of the cylinder body, and the cylinder body is provided with a plurality of adjusting devices which can be used for adjusting the inclination angle of the inclined platform (27).
2. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 1, wherein: the compression device comprises a piston cylinder body (9) with a circular structure in cross section, a plurality of compression chambers are uniformly arranged on the piston cylinder body (9) in an annular mode, the piston cylinder body (9) can rotate around the axis of the piston cylinder body, and when the piston cylinder body (9) rotates, the compression chambers can be respectively communicated with the inlet of the low-pressure seawater area (A) and the outlet of the high-pressure drainage area (D).
3. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 2, wherein: the plurality of compression chambers are respectively provided with a piston (8), one end of each piston (8) is positioned in the compression chamber, and the other end of each piston is arranged in the sealed chamber of the cylinder body and is in transmission connection with the power driving device.
4. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 3, wherein: one side of the inclined platform (27) close to the pistons (8) is provided with a fixed disk (5) which is attached to the inclined platform (27), the fixed disk (5) is provided with a plurality of piston seats (26) which are in one-to-one correspondence with the pistons (8), and the rear end of each piston (8) is connected with the corresponding piston seat (26).
5. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 4, wherein: the fixed disk (5) is sleeved on the main shaft (20), a spherical hinge (6) is arranged between the fixed disk (5) and the main shaft (20), and the spherical hinge (6), the fixed disk (5) and the main shaft (20) are fixedly connected respectively and can rotate along with the main shaft (20).
6. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 5, wherein: a spring (7) is arranged between one end of the spherical hinge (6) and the piston cylinder body (9).
7. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 6, wherein: the cylinder body includes well rear cylinder body (10) and rear end cap (1) of body coupling, well rear cylinder body (10) keep away from the one end of rear end cap (1) and have well jar (16) and front end cap (19) sealing connection in proper order, and wherein one end of main shaft (20) is rotated with rear end cap (1) and is connected, and the other end stretches out the outside of front end cap (19).
8. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 7, wherein: an inlet of the low-pressure seawater area (A) and an outlet of the high-pressure drainage area (D) are respectively arranged at opposite positions on the middle cylinder (16), a water distribution plate (11) and a lining plate (12) are sequentially arranged between the piston cylinder body (9) and the middle cylinder (16), and a friction pair is arranged between the water distribution plate (11) and the lining plate (12).
9. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 8, wherein: the water distribution plate (11) and the lining plate (12) are respectively provided with a low-pressure pretreatment area (F) and a high-pressure conversion low-pressure area (E) at the positions corresponding to the inlet of the low-pressure seawater area (A) and the outlet of the high-pressure drainage area (D).
10. The pressure-adjustable high-pressure water pump for seawater desalination as claimed in claim 9, wherein: the adjusting device comprises an adjusting plunger (28) with one end movably connected with the tilting table (27), a chamber with one open end is arranged inside the adjusting plunger (28), an adjusting top plug (31) is arranged in the chamber, an adjusting spring (30) and a radial cushion block (29) are arranged between the top end of the adjusting top plug (31) and the adjusting plunger (28), and the other end of the adjusting plunger is fixed outside the rear end cover (1) through an adjusting stud (32).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921173914.2U CN211370632U (en) | 2019-07-25 | 2019-07-25 | High-pressure water pump with adjustable pressure for sea water desalination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921173914.2U CN211370632U (en) | 2019-07-25 | 2019-07-25 | High-pressure water pump with adjustable pressure for sea water desalination |
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| CN211370632U true CN211370632U (en) | 2020-08-28 |
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| CN201921173914.2U Active CN211370632U (en) | 2019-07-25 | 2019-07-25 | High-pressure water pump with adjustable pressure for sea water desalination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114504869A (en) * | 2022-01-27 | 2022-05-17 | 浙江工业大学 | Portable hand-operated seawater desalination device |
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2019
- 2019-07-25 CN CN201921173914.2U patent/CN211370632U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114504869A (en) * | 2022-01-27 | 2022-05-17 | 浙江工业大学 | Portable hand-operated seawater desalination device |
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