A sea water desalinator

Abstract

The application relates to a seawater desalination device, belonging to the technical field of seawater desalination equipment, which comprises a shell, a high-pressure device, a reverse osmosis membrane assembly and a connector. The reverse osmosis membrane assembly is installed in the shell, the high-pressure device is located on one side of the reverse osmosis membrane assembly, the high-pressure device is installed outside the shell, the high-pressure device comprises a connecting column, the connector is located between the connecting column and the reverse osmosis membrane assembly and is used for connecting and communicating the connecting column and the shell, the connector comprises a connecting sleeve, a first threaded groove is formed in the outer wall of the connecting column and is used for inserting and threadedly connecting the connecting sleeve, and a second threaded groove is formed in the outer wall of the shell and is used for inserting and threadedly connecting the end of the connecting sleeve away from the connecting column. The connecting sleeve comprises a forward threaded part and a reverse threaded part, the forward threaded part is threadedly installed in the first threaded groove, and the reverse threaded part is threadedly installed in the second threaded groove. The application has the effect of making the seawater desalination device more convenient to carry.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seawater desalination equipment, in particular to a seawater desalination device. BACKGROUND

[0002] The seawater desalination device is mainly used for desalination of seawater to produce fresh water, is an open source incremental technology for realizing water resource utilization, and can guarantee drinking water for coastal residents. Since the reverse osmosis technology has the advantages of simple process, convenient operation, easy automatic control, no pollution and low operation cost, it is an advanced, stable and effective seawater desalination technology at present, and therefore the reverse osmosis type seawater desalination device becomes a key equipment in seawater desalination.

[0003] The reverse osmosis type seawater desalination device comprises a pump shell, a high-pressure pump and a reverse osmosis membrane assembly. The reverse osmosis membrane assembly is installed in the interior of the pump body, and the high-pressure pump is installed outside the pump shell by bolts. In order to make the high-pressure pump communicate with the reverse osmosis membrane assembly, a pipeline is arranged between the high-pressure pump and the pump shell, and then seawater is pressurized by the high-pressure pump and purified by the reverse osmosis membrane assembly. In the related art, the pipeline connected between the high-pressure pump and the pump shell is a flange pipeline, and in order to facilitate the fixation of the flange pipeline by bolts, a section of butt joint pipe with a flange is outwardly protrudingly arranged at the position where the high-pressure pump and the pump shell are connected with the pipeline, and thus the volume of the entire reverse osmosis type seawater desalination device is large, which is inconvenient for fishery ship operators to carry. SUMMARY

[0004] In order to make the seawater desalination device more convenient to carry, the present application provides a seawater desalination device adopting the following technical scheme:

[0005] A seawater desalination device comprises a shell, a high-pressure device, a reverse osmosis membrane assembly and a connector. The reverse osmosis membrane assembly is installed in the interior of the shell. The high-pressure device is located on one side of the reverse osmosis membrane assembly. The high-pressure device is installed outside the shell. The high-pressure device comprises a connecting column. The connector is located between the connecting column and the reverse osmosis membrane assembly for connecting and communicating the connecting column and the shell. The connector comprises a connecting sleeve. A first threaded groove is formed in the outer wall of the connecting column for inserting and threadedly connecting the connecting sleeve. A second threaded groove is formed in the outer wall of the shell for inserting and threadedly connecting the end of the connecting sleeve away from the connecting column.

[0006] The connecting sleeve comprises a forward threaded part and a reverse threaded part. The forward threaded part is threadedly installed in the first threaded groove. The reverse threaded part is threadedly installed in the second threaded groove.

[0007] In order to improve the sealing line of the connection between the connector and the shell and the connecting column, a driving nut is arranged on the connecting sleeve and fixed, the forward threaded part and the reverse threaded part are located on the two sides of the driving nut respectively, the forward threaded part is sleeved with a first sealing ring for sealing the opening of the first threaded groove, and the reverse threaded part is sleeved with a second sealing ring for sealing the opening of the second threaded groove.

[0008] The connector further comprises a first compression ring and a second compression ring, the first compression ring is sleeved and threadedly installed on the forward threaded part, and the second compression ring is sleeved and threadedly installed on the reverse threaded part.

[0009] The first sealing ring is located on the side of the first compression ring close to the connecting column, and the second sealing ring is located on the side of the second compression ring away from the driving nut.

[0010] The end of the forward threaded part is provided with a first sealing gasket abutting against the bottom of the first threaded groove, and the end of the reverse threaded part is provided with a second sealing gasket abutting against the bottom of the second threaded groove.

[0011] In order to make the connecting column move to the direction close to the reverse osmosis membrane assembly when the connector rotates, the bottom of the connecting column is provided with a connecting plate, and one side of the shell is provided with a positioning groove for inserting and sliding the connecting plate.

[0012] In order to make the reverse osmosis membrane assembly be able to discharge fresh water and concentrated seawater independently after filtering seawater, one side of the shell away from the connecting column is provided with a mounting groove, the reverse osmosis membrane assembly is installed in the mounting groove, a threaded end cover for limiting the reverse osmosis membrane assembly in the mounting groove is arranged at the opening of the mounting groove, and a seawater channel communicated with the second threaded groove is arranged at the bottom of the mounting groove, and the diameter of the seawater channel is smaller than that of the second threaded groove.

[0013] The reverse osmosis membrane assembly comprises a fresh water outlet pipe, a permeation membrane filter core, a permeation membrane water inlet end cover and a permeation membrane water outlet end cover, the permeation membrane filter core is sleeved on the fresh water outlet pipe, the fresh water outlet pipe is not communicated with the seawater channel, a permeation hole for entering the fresh water generated after filtering is arranged on the side wall of the fresh water outlet pipe, and a fresh water outlet channel for inserting and communicating with the fresh water outlet pipe is arranged on the threaded end cover.

[0014] The permeation membrane water inlet end cover is located on the side of the permeation membrane filter core close to the seawater channel and is sleeved on the permeation membrane filter core, and a seawater inlet communicated with the seawater channel is arranged on the permeation membrane water inlet end cover.

[0015] The permeable membrane outlet end cover is located on the side of the permeable membrane filter core away from the permeable membrane inlet end cover and is sleeved on the permeable filter core, and the permeable membrane outlet end cover is provided with a concentrated seawater outlet for discharging filtered seawater.

[0016] In order to prevent the filtered concentrated seawater from flowing back under high pressure, the reverse osmosis membrane assembly further comprises a partitioning sleeve ring, the partitioning sleeve ring is sleeved on the middle part of the permeable membrane filter core, the partitioning sleeve ring divides the installation groove into a fresh seawater chamber and a concentrated seawater chamber which are not communicated with each other, and the concentrated seawater chamber is not communicated with the fresh water outlet channel;

[0017] The partitioning sleeve ring is sleeved with a blocking sealing ring, the outer peripheral wall of the blocking sealing ring abuts against the inner peripheral wall of the installation groove, the permeable membrane inlet end cover is located in the fresh seawater chamber, and the permeable membrane outlet end cover is located in the concentrated seawater chamber.

[0018] In order to discharge the concentrated seawater after the seawater and fresh water are separated at the optimal pressure separation point value, the seawater desalination device further comprises a pressure regulating valve for discharging the concentrated seawater from the concentrated seawater chamber when the seawater and fresh water reach the optimal separation point, the pressure regulating valve is installed on the outer wall of the shell and is communicated with the concentrated seawater chamber;

[0019] The outer wall of the shell is provided with a threaded connection groove, the groove bottom of the threaded connection groove is provided with a concentrated seawater outlet communicated with the concentrated seawater chamber, and the caliber of the threaded connection groove is larger than that of the concentrated seawater outlet;

[0020] The pressure regulating valve comprises a connecting seat inserted into the threaded connection groove and threaded on the shell, a one-way valve assembly installed in the connecting seat, and an adjusting cap for adjusting the pressure value provided by the one-way valve assembly;

[0021] One end of the connecting seat close to the concentrated seawater outlet is provided with a concentrated seawater inlet, and the other end of the connecting seat away from the concentrated seawater inlet is provided with a valve chamber communicated with the concentrated seawater inlet, and the caliber of the concentrated seawater inlet is smaller than that of the valve chamber;

[0022] The one-way valve assembly is installed in the valve chamber for communicating or blocking the concentrated seawater inlet and the concentrated seawater outlet, and the adjusting cap is sleeved and threaded on one side of the connecting seat provided with the valve chamber for adjusting the pressure of the one-way valve assembly.

[0023] In order to adjust the pressure value of the pressure regulating valve to reach the optimal separation point of seawater and fresh water, the one-way valve assembly comprises a valve stem sliding in the valve chamber and blocking the concentrated seawater inlet, a booster spring driving the valve stem to move towards the concentrated seawater inlet, and a blocking column fixed on the valve stem and inserted into the concentrated seawater inlet for blocking;

[0024] The side of the connecting seat where the concentrated seawater inlet is located is provided with a sealing groove, and a sealing gasket is embedded in the sealing groove. The concentrated seawater inlet is located inside the sealing gasket, and the blocking column is inserted into the inner hole of the sealing gasket in an interference fit.

[0025] In order to enable the concentrated seawater to be discharged through the pressure regulating valve and prevent the pressure regulating cap from loosening after being adjusted to the pressure value of the optimal separation point of seawater and fresh water, a water passage is formed in the outer wall of the valve stem and penetrates the valve stem along the sliding direction of the valve stem. The adjusting cap is provided with a concentrated seawater discharge port communicating with the valve chamber.

[0026] The connecting seat is sleeved with a positioning lock plate and is threadedly mounted. The side of the adjusting cap close to the connecting seat is provided with a threaded groove for the threaded insertion of the connecting seat. The groove bottom of the threaded groove is spaced from the connecting seat by an adjusting gap.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. When connecting the shell and the high-pressure device, the positive threaded part of the connecting sleeve is inserted into the first threaded groove of the connecting seat, the reverse threaded part is inserted into the second threaded groove of the shell, and then the connecting sleeve is rotated. The pump body and the connecting column can be more tightly connected together, and the shell and the high-pressure device are more stable after being connected. In addition, through the connector, the pipeline is reduced, and the shell and the high-pressure device do not need to be suspended out of the flange pipeline structure. The overall gap between the shell and the high-pressure device is smaller, and the entire pump body is smaller in size, which is convenient for carrying.

[0029] 2. The end of the forward screw thread part is provided with a first sealing gasket, which is pressed by the bottom of the first thread groove when the forward screw thread part is inserted into the first thread groove, so as to seal the joint between the end of the forward screw thread part and the connecting seat. The first sealing gasket and the first sealing ring form a double sealing effect on the forward screw thread part, so that seawater is not easy to leak from the joint between the forward screw thread part and the high-pressure device under high pressure. The end of the reverse screw thread part is provided with a second sealing gasket, which is pressed by the bottom of the second thread groove when the reverse screw thread part is inserted into the second thread groove, so as to seal the joint between the end of the reverse screw thread part and the shell. The second sealing gasket and the second sealing ring form a double sealing effect on the reverse screw thread part, so that seawater is not easy to leak from the joint between the reverse screw thread part and the pump body under high pressure.

[0030] 3. When the concentrated seawater reaches a certain pressure and drives the valve column to move towards the adjusting nut, the plug column is pulled out of the concentrated seawater outlet. The concentrated seawater with high salt content will enter the valve chamber through the concentrated seawater inlet. The concentrated seawater in the valve chamber will enter the other side of the valve column through the water passage and be discharged from the water outlet on the adjusting nut. After the concentrated seawater with high salt content is discharged and processed and dried, edible salt can be formed, so that the seawater desalination device can also become a salt making machine. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is an exploded view of the seawater desalination device in the embodiment of the present application.

[0032] Figure 2 is a sectional view of the seawater desalination device in the embodiment of the present application.

[0033] Figure 3 is an exploded view of the shell, high-pressure device and connector in the embodiment of the present application.

[0034] Figure 4 is a schematic view of the overall structure of the connector in the embodiment of the present application.

[0035] Figure 5 is a sectional view of the connector in the embodiment of the present application.

[0036] Figure 6 is an exploded view of the threaded end cover and reverse osmosis membrane assembly in the embodiment of the present application.

[0037] Figure 7 is a sectional view of the shell, reverse osmosis membrane assembly and pressure regulating valve in the embodiment of the present application.

[0038] Figure 8 is an exploded view of the pressure regulating valve in the embodiment of the present application.

[0039] Figure 9Figure 1 is a schematic diagram of the mounting structure of the sealing gasket in the pressure regulating valve in the embodiment of the present application.

[0040] Figure 10 Figure 2 is a sectional view of the pressure regulating valve in the embodiment of the present application.

[0041] Reference signs: 1, housing; 11, positioning groove; 12, second threaded groove; 13, mounting groove; 131, dilute seawater chamber; 132, concentrated seawater chamber; 14, threaded end cover; 141, fresh water outlet passage; 15, seawater passage; 16, threaded connecting groove; 17, concentrated seawater outlet; 18, pressure relief valve; 2, high pressure device; 21, connecting column; 211, piston groove; 212, first threaded groove; 22, connecting plate; 23, piston column; 24, connecting rod; 25, pressure rod; 3, reverse osmosis membrane assembly; 31, fresh water outlet pipe; 311, permeation hole; 32, permeation membrane filter core; 33, permeation membrane water inlet end cover; 331, seawater inlet; 34, permeation membrane water outlet end cover; 341, seawater outlet; 35, partitioning collar; 36, blocking sealing ring; 4, connector; 41, connecting sleeve; 411, forward threaded portion; 4111, first sealing gasket; 412, reverse threaded portion; 4121, second sealing gasket; 413, inner protruding ring; 414, protruding portion; 42, driving nut; 43, first compression ring piece; 44, second compression ring piece; 45, first sealing ring; 46, second sealing ring; 5, pressure regulating valve; 51, connecting seat; 511, concentrated seawater inlet; 512, valve chamber; 513, sealing groove; 514, sealing gasket; 515, adjustment gap; 52, one-way valve assembly; 521, valve column; 5211, water passage; 5212, spring sleeve column; 522, pressure boosting spring; 523, plugging column; 53, adjustment cap; 531, threaded groove; 532, concentrated seawater discharge port; 54, positioning lock piece. DETAILED DESCRIPTION

[0042] The following will be described in detail below with reference to the accompanying drawings. Figures 1-10 The present application will be further described in detail.

[0043] The embodiment of the present application discloses a seawater desalination device. Referring to Figure 1 , the seawater desalination device comprises a housing 1, a high pressure device 2, a reverse osmosis membrane assembly 3, a connector 4 and a pressure regulating valve 5. The reverse osmosis membrane assembly 3 is installed inside the housing 1 for separating seawater into fresh water and discharging high-concentration seawater after the fresh water is separated. The high pressure device 2 is located on one side of the reverse osmosis membrane assembly 3 and is installed outside the housing 1 for boosting the pressure of seawater entering the reverse osmosis membrane assembly 3. The connector 4 is located between the high pressure device 2 and the reverse osmosis membrane assembly 3 for connecting and communicating the high pressure device 2 and the housing 1. The pressure regulating valve 5 is installed on the outer wall of the housing 1 and is in communication with the inside of the housing 1 for discharging concentrated seawater from the housing 1 at a pressure value at which seawater and fresh water reach an optimal separation point.

[0044] Referring to Figure 1 With Figure 2 , the high-pressure device 2 comprises a connecting column 21, a connecting plate 22, a piston column 23, a connecting rod 24 and a pressure rod 25. The connecting plate 22 is integrally formed at the bottom of the connecting column 21. The top of the connecting column 21 is provided with a piston groove 211, which penetrates the connecting column 21 and the connecting plate 22 along the vertical direction. In use, a one-way valve is installed at the opening of the piston groove 211 of the connecting plate 22, so that seawater can enter from the opening of the piston groove 211 at the bottom of the connecting plate 22 (the state shown in the drawings is the unused state, i.e. the state when it leaves the factory, so the water inlet seat is screwed into the opening of the piston groove 211 of the connecting plate 22, which blocks the opening). The piston column 23 is inserted into the piston groove 211, the top of the piston column 23 protrudes from the piston groove 211, and the top of the piston column 23 is hinged to the pressure rod 25 by a rotating pin. The connecting rod 24 is hinged to the outer wall of the connecting column 21 on one side and to the pressure rod 25 on the other side. In use, the pressure rod 25 is pressed down, which moves the piston column 23 upward, and the one-way valve at the opening of the piston groove 211 of the connecting plate 22 is opened, so that seawater is drawn into the piston groove 211; when the pressure rod 25 is lifted upward, the one-way valve at the opening of the piston groove 211 of the connecting plate 22 is closed, and the seawater in the piston groove 211 enters the reverse osmosis membrane assembly 3 under pressure through the connector 4, so that the seawater continuously flows into the shell 1 for desalination.

[0045] A positioning groove 11 is formed on one side of the shell 1, which is located on the side where the high-pressure device 2 is located, and the top of the positioning groove 11 penetrates the shell 1. The connecting plate 22 is inserted and slides under the action of the connector 4, and when the connecting plate 22 moves to the specified position under the action of the connector 4, the connecting plate 22 is fixed to the shell 1 by bolts.

[0046] Referring to Figure 1 With Figure 3 , the connecting column 21 is provided with a first threaded groove 212 on the side close to the connector 4, the groove bottom of the first threaded groove 212 is provided with a valve groove in communication with the piston groove 211, and a check valve for allowing seawater to enter is installed in the valve groove. The outer wall of the shell 1 close to the connector 4 is provided with a second threaded groove 12.

[0047] Referring to Figure 3 With Figure 4The connector 4 comprises a connecting sleeve 41, a driving nut 42, a first compression ring 43 and a second compression ring 44. The connecting sleeve 41 comprises a forward threaded portion 411 and a reverse threaded portion 412, and the driving nut 42 is located at the middle part of the connecting sleeve 41 in the axial direction and is integrally formed with the connecting sleeve 41. The forward threaded portion 411 and the reverse threaded portion 412 are located at the two sides of the driving nut 42 respectively, the forward threaded portion 411 is threadedly installed in the first threaded groove 212, and the reverse threaded portion 412 is threadedly installed in the second threaded groove 12. The first compression ring 43 is sleeved and threadedly installed on the forward threaded portion 411, and the second compression ring 44 is sleeved and threadedly installed on the reverse threaded portion 412.

[0048] With reference to Figure 4 With reference to Figure 5 The inner wall of the end of the forward threaded portion 411 is integrally formed with an inner convex ring 413, and the end of the inner convex ring 413 close to the connecting column 21 is integrally formed with a convex portion 414. The spring in the check valve at the opening of the piston groove 211 of the connecting bottom plate is sleeved on the convex portion 414 and abuts against the inner convex ring 413. In the embodiment, the convex portion 414 is preferably four circular arc pieces, which are uniformly and circumferentially spaced at the end of the inner convex ring 413, and the spring in the check valve is sleeved on the four circular arc pieces.

[0049] With reference to Figure 1 With reference to Figure 4 With reference to Figure 5 The first sealing ring 45 is sleeved on the forward threaded portion 411 and located at the side of the first compression ring 43 away from the driving nut 42. When the first compression ring 43 is rotated and moved towards the connecting column 21, the first compression ring 43 can push the first sealing ring 45 to move, so as to compress the first sealing ring 45 on the connecting column 21, thereby sealing the connection between the forward threaded portion 411 and the connecting column 21, so that the high-pressure gas and seawater are not easy to leak.

[0050] The end of the forward threaded portion 411 is provided with a first sealing gasket 4111, which is pressed by the bottom of the first threaded groove 212 after the forward threaded portion 411 is inserted into the first threaded groove 212, so as to seal the connection between the end of the forward threaded portion 411 and the connecting column 21. The first sealing gasket and the first sealing ring 45 form a double sealing effect on the forward threaded portion 411, so that the seawater is not easy to leak from the connection between the forward threaded portion 411 and the connecting column 21 under high pressure.

[0051] With reference to Figure 3 With reference to Figure 4 With reference to Figure 5The second sealing ring 46 is sleeved on the reverse threaded portion 412 and located on the side of the second compression ring 44 away from the drive nut 42. When the second compression ring 44 is rotated and moved towards the housing 1, the second compression ring 44 can push the second sealing ring 46 to be compressed on the housing 1, thereby sealing the connection between the reverse threaded portion 412 and the housing 1, so that the high-pressure gas and seawater are not easy to leak.

[0052] The second sealing gasket 4121 is installed at the end of the reverse threaded portion 412. When the reverse threaded portion 412 is inserted into the second threaded groove 12, the second sealing gasket 4121 is pressed by the groove bottom of the second threaded groove 12 to seal the connection between the end of the reverse threaded portion 412 and the pump body. The second sealing gasket 4121 and the second sealing ring 46 form a double sealing effect on the reverse threaded portion 412, so that seawater is not easy to leak from the connection between the reverse threaded portion 412 and the pump body under high pressure.

[0053] In combination Figure 1 With reference to Figure 2 With Figure 6 The housing 1 is provided with a mounting groove 13 on the side away from the connecting seat 51, and the reverse osmosis membrane assembly 3 is installed in the mounting groove 13. A threaded end cover 14 is arranged at the opening of the mounting groove 13 to limit the reverse osmosis membrane assembly 3 in the mounting groove 13. The threaded end cover 14 is provided with a fresh water outlet channel 141 communicating with the inside of the mounting groove 13.

[0054] In combination Figure 1 With reference to Figure 2 With Figure 6 The reverse osmosis membrane assembly 3 includes a fresh water outlet pipe 31, a permeate membrane filter core 32, a permeate membrane water inlet end cover 33, a permeate membrane water outlet end cover 34, and a partitioning sleeve ring 35. The permeate membrane filter core 32 is sleeved on the fresh water outlet pipe 31 and tightly adheres to the fresh water outlet pipe 31. The permeate membrane filter core 32 is wrapped with a filter core adhesive tape on the outside, so that the water in the permeate membrane filter core 32 is not easy to seep out through the filter core adhesive tape. The permeate membrane water inlet end cover 33 and the permeate membrane water outlet end cover 34 are respectively sleeved on the two ends of the permeate membrane filter core 32. The partitioning sleeve ring 35 is sleeved on the middle part of the permeate membrane filter core 32, and divides the mounting groove 13 into a fresh seawater chamber 131 and a concentrated seawater chamber 132 which are not communicated with each other. The concentrated seawater chamber 132 is not communicated with the fresh water outlet channel 141.

[0055] The fresh water outlet pipe 31 is inserted into the fresh water outlet channel 141 near the threaded end cap 14 and tightly fitted with the fresh water outlet channel 141 through a sealing ring. The fresh water outlet pipe 31 is plugged near the seawater channel 15, so that the fresh water outlet pipe 31 is not in communication with the seawater channel 15. The sidewall of the fresh water outlet pipe 31 is provided with a permeation hole 311, and the fresh water produced after being purified by the permeation membrane filter core 32 will enter the inside of the fresh water outlet pipe 31 through the permeation hole 311 and finally be discharged through the fresh water outlet channel 141.

[0056] In combination Figure 1 With reference to Figure 2 With Figure 6 , the permeation membrane inlet end cap 33 is located on the side of the permeation membrane filter core 32 near the seawater channel 15 and is sleeved on the permeation membrane filter core 32, and the seawater inlet 331 in communication with the seawater channel 15 is provided on the permeation membrane inlet end cap 33. The permeation membrane outlet end cap 34 is located on the side of the permeation membrane filter core 32 away from the permeation membrane inlet end cap 33 and is sleeved on the permeation filter core, and the seawater outlet 341 for discharging the filtered seawater is provided on the permeation membrane outlet end cap 34. After the seawater is purified by the permeation membrane filter core 32 and the fresh water is discharged, the concentrated seawater with a higher salt concentration is left and will enter the concentrated seawater chamber 132 through the seawater outlet 341.

[0057] The blocking sealing ring 36 is sleeved on the blocking sleeve 35, the outer peripheral wall of the blocking sealing ring 36 abuts against the inner peripheral wall of the installation groove 13, the permeation membrane inlet end cap 33 is located in the fresh seawater chamber 131, and the permeation membrane outlet end cap 34 is located in the concentrated seawater chamber 132 and is discharged through the pressure regulating valve 5.

[0058] In combination Figure 1 With reference to Figure 3 With Figure 7 , the mounting hole is provided on the outer wall of the shell 1 and is in communication with the fresh seawater chamber 131. The pressure relief valve 18 is inserted and threadedly installed in the mounting hole, and the pressure relief valve 18 plays a role of exhausting and pressure relief, that is, when starting to pressurize, the pressure relief valve 18 is loosened to exhaust the air and seawater in the pump body; when desalinating seawater, the pressure relief valve is tightened, and after the desalination of seawater is completed, the pressure relief valve is loosened to release the remaining seawater in the pump body for next use.

[0059] In combination Figure 1 With reference to Figure 7 With Figure 8 , the threaded connection groove 16 is provided on the outer wall of the shell 1, the groove bottom of the threaded connection groove 16 is provided with the concentrated seawater outlet 17 in communication with the concentrated seawater chamber 132, and the caliber of the threaded connection groove 16 is larger than that of the concentrated seawater outlet 17. The pressure regulating valve 5 is threadedly installed in the threaded connection groove 16.

[0060] The pressure regulating valve 5 includes a connecting seat 51 inserted into the threaded connecting groove 16 and threaded onto the housing 1, a one-way valve assembly 52 installed inside the connecting seat 51, and an adjusting cap 53 for adjusting the pressure value provided by the one-way valve assembly 52.

[0061] Combination Figure 7 Reference Figure 8 and Figure 9 The connecting seat 51 has external threads, and a concentrated seawater inlet 511 communicating with the concentrated seawater outlet 17 is opened at one end of the connecting seat 51 near the housing 1. A valve chamber 512 is opened at the end of the connecting seat 51 away from the concentrated seawater inlet 511. The valve chamber 512 communicates with the concentrated seawater inlet 511, and the diameter of the concentrated seawater inlet 511 is smaller than the diameter of the valve chamber 512. A one-way valve assembly 52 is installed in the valve chamber 512 to connect or disconnect the concentrated seawater inlet 511 from the concentrated seawater outlet 17. An adjusting nut is located on the side of the opening of the valve chamber 512 on the connecting seat 51 to confine the one-way valve assembly 52 within the valve chamber 512 and to adjust the pressure of the resilient valve body assembly.

[0062] A sealing groove 513 is provided at one end of the connecting seat 51 where the concentrated seawater inlet 511 is located, and the concentrated seawater inlet 511 is located at the bottom of the sealing groove 513. A sealing gasket 514 is embedded in the sealing groove 513, and the inner diameter of the sealing gasket 514 is larger than the diameter of the concentrated seawater inlet 511, that is, the concentrated seawater inlet 511 is located within the inner diameter range of the sealing gasket 514. The side of the sealing gasket 514 facing away from the bottom of the sealing groove 513 protrudes out of the sealing groove 513 and is exposed to the outside. When the connecting seat 51 is inserted into the threaded connection groove 16, the sealing gasket 514 is compressed and presses against the bottom of the threaded connection groove 16 to form a seal. The concentrated seawater outlet 17 is located inside the ring of the sealing gasket 514, thereby achieving a sealing function.

[0063] Combination Figure 8 Reference Figure 9 and Figure 10 The one-way valve assembly 52 includes a valve stem 521 that slides within the valve chamber 512 and blocks the concentrated seawater inlet 511; a pressure-boosting spring 522 that drives the valve stem 521 toward the concentrated seawater inlet 511; and a blocking column 523 that is fixedly mounted on the valve stem 521 and inserted into the concentrated seawater inlet 511 to block it. The pressure-boosting spring 522 is located between the valve stem 521 and the adjusting cap 53. One end of the pressure-boosting spring 522 abuts against the adjusting cap 53, and the other end abuts against the valve stem 521. Under the action of the pressure-boosting spring 522, the valve stem 521 always tends to move toward the concentrated seawater inlet 511 to block it, thereby causing the blocking column 523 to insert into the concentrated seawater inlet 511 and block it.

[0064] The outer diameter of the valve column 521 is greater than the caliber of the concentrated seawater inlet 511, and then the valve column 521 can completely block the concentrated seawater inlet 511, so that the brine is not easy to enter the valve chamber 512 in the state of no pressure.

[0065] In combination Figure 8 With reference to Figure 9 With Figure 10 When the valve column 521 abuts against the cavity bottom of the valve chamber 512 under the action of the pressure spring 522, part of the plugging column 523 is inserted into the inner hole of the sealing gasket 514, and because the inner diameter of the sealing gasket 514 will become smaller due to the elastic deformation of the sealing gasket 514 under the extrusion, the plugging column 523 is inserted into the inner hole of the sealing gasket 514 with interference, further improving the stability when the concentrated seawater inlet 511 is blocked. The plugging column 523 and the sealing gasket 514 are interference-fitted to realize close adhesion, and when the pressure is adjusted to the best separation value of sea fresh water, the high-concentration waste seawater will flush away the plugging column 523.

[0066] The outer peripheral wall of the valve column 521 is provided with a water passage 5211, the water passage 5211 penetrates the valve column 521 along the sliding direction of the valve column 521, and the water passage 5211 is located outside the caliber of the concentrated seawater inlet 511. When the brine flushes away the valve column 521 under a certain pressure, the brine will enter the valve chamber 512 and be located on the side of the valve column 521 close to the concentrated seawater inlet 511, and the brine located on the side of the valve column 521 close to the concentrated seawater inlet 511 can enter the other side of the valve column 521 through the water passage 5211 and be discharged. The water passage 5211 is circumferentially spaced apart on the outer peripheral wall of the valve column 521, and then the water discharge amount when the brine is discharged is improved.

[0067] The end of the valve column 521 close to the pressure spring 522 is integrally formed with a spring sleeve column 5212, and the end of the pressure spring 522 abutting against the valve column 521 is sleeved on the spring sleeve column 5212.

[0068] The side of the adjusting cap 53 close to the connecting seat 51 is provided with a threaded groove 531, and the connecting seat 51 is inserted into the threaded groove 531 and threadedly connected with the adjusting cap 53. The groove bottom of the threaded groove 531 is provided with a concentrated seawater discharge port 532 communicating with the valve chamber 512, and the concentrated seawater will be discharged through the concentrated seawater discharge port 532, and people can process and dry the concentrated seawater to make edible salt.

[0069] In combination Figure 8 With reference to Figure 9 With Figure 10 The end of the connecting seat 51 close to the adjusting cap 53 is spaced apart from the groove bottom of the threaded groove 531 by an adjusting gap 515, so that the adjusting cap 53 has a certain displacement after being rotated, and then the pressure generated by the pressure spring 522 on the valve body is adjusted.

[0070] The positioning lock plate 54 is sleeved and threadedly mounted on the connecting seat 51 and is located on the side of the adjusting cap 53 close to the seawater desalination device. Before the seawater desalination device is shipped, when the pressure regulating valve 5 is adjusted to the optimal separation point pressure value of seawater, the positioning lock plate 54 is tightened to lock, so that the adjusting cap is not easy to be loosened to change the pressure value.

[0071] The implementation principle of the seawater desalination device in the embodiment of the application is as follows: when the connecting sleeve 41 is connected with the high-pressure device 2, the forward threaded part 411 of the connecting sleeve 41 is inserted into the first threaded groove 212 of the connecting seat 51, the reverse threaded part 412 is inserted into the second threaded groove 12 of the shell 1, then the connecting sleeve 41 is rotated, the pump body and the connecting column 21 can be more tightly connected together, the shell 1 and the high-pressure device 2 are more stable after being connected, in addition, the pipeline is reduced by the connector 4, and the shell 1 and the high-pressure device 2 do not need to be suspended and extended out of the flange pipeline structure.

[0072] The end of the forward threaded part 411 is provided with a first sealing gasket 4111, which is extruded to seal the connection between the end of the forward threaded part 411 and the connecting seat 51 after the forward threaded part 411 is inserted into the first threaded groove 212. The first sealing gasket and the first sealing ring 45 form a double sealing effect on the end of the forward threaded part 411, so that seawater is not easy to leak from the connection between the forward threaded part 411 and the high-pressure device 2 under high pressure. The end of the reverse threaded part 412 is provided with a second sealing gasket 4121, which is extruded to seal the connection between the end of the reverse threaded part 412 and the shell 1 after the reverse threaded part 412 is inserted into the second threaded groove 12. The second sealing gasket and the second sealing ring 46 form a double sealing effect on the end of the reverse threaded part 412, so that seawater is not easy to leak from the connection between the reverse threaded part 412 and the pump body under high pressure.

[0073] When the concentrated seawater reaches a certain pressure to drive the valve column 521 to move towards the adjusting nut, the valve column 521 is opened, the plug column 523 is pulled out of the concentrated seawater outlet 17, and the concentrated seawater with high salt content is introduced into the valve chamber 512 through the concentrated seawater inlet 511. The concentrated seawater in the valve chamber 512 enters the other side of the valve column 521 through the water passage 5211 and is discharged from the water outlet on the adjusting cap 53. After the concentrated seawater with high salt content is discharged, edible salt can be formed after processing and drying, so that the seawater desalination device can also become a salt making machine.

[0074] The above are preferred embodiments of the application, which do not limit the protection scope of the application. Any equivalent changes made on the basis of the structure, shape and principle of the application should be covered by the protection scope of the application.

Claims

1. A sea water desalinator characterised by: The utility model provides a reverse osmosis membrane module connecting device, including shell (1), high pressure device (2), reverse osmosis membrane assembly (3) and connector (4), reverse osmosis membrane assembly (3) is installed inside the shell (1), high pressure device (2) is located one side of reverse osmosis membrane assembly (3), high pressure device (2) is installed to the outside of shell (1), high pressure device (2) includes connecting post (21), connector (4) is located between connecting post (21) and reverse osmosis membrane assembly (3) for making connecting post (21) and shell (1) are connected and communicate, connector (4) includes connecting sleeve (41), the outer wall of connecting post (21) is opened with first threaded groove (212) that the connecting sleeve (41) inserts and is threadedly connected, the outer wall of shell (1) is opened with second threaded groove (12) that the one end of connecting sleeve (41) is inserted and is threadedly connected away from connecting post (21), connecting sleeve (41) includes positive screw thread portion (411) and reverse screw thread portion (412), positive screw thread portion (411) is threadedly installed in first threaded groove (212), reverse screw thread portion (412) is threadedly installed in second threaded groove (12), the side of shell (1) away from connecting post (21) is opened with installation groove (13), and reverse osmosis membrane assembly (3) is installed in installation groove (13), reverse osmosis membrane assembly (3) still includes partition sleeve ring (35), and partition sleeve ring (35) divides installation groove (13) into mutual non-communicating dilute seawater chamber (131) and concentrated seawater chamber (132), It also includes a pressure regulating valve (5) that allows concentrated seawater to be discharged from the concentrated seawater chamber (132) at the pressure value at which seawater and freshwater reach the optimal separation point. The pressure regulating valve (5) is installed on the outer wall of the housing (1) and communicates with the concentrated seawater chamber (132). A threaded connection groove (16) is provided on the outer wall of the housing (1). A concentrated seawater outlet (17) communicating with the concentrated seawater chamber (132) is provided at the bottom of the threaded connection groove (16). The diameter of the threaded connection groove (16) is larger than the diameter of the concentrated seawater outlet (17). The pressure regulating valve (5) includes a connecting seat that is inserted into the threaded connection groove (16) and threaded onto the housing (1). (51) A one-way valve assembly (52) installed inside the connecting seat (51) and an adjusting cap (53) for adjusting the pressure value provided by the one-way valve assembly (52); a concentrated seawater inlet (511) is provided at one end of the connecting seat (51) near the concentrated seawater outlet (17), and a valve chamber (512) communicating with the concentrated seawater inlet (511) is provided at the other end of the connecting seat (51) away from the concentrated seawater inlet (511), the diameter of the concentrated seawater inlet (511) is smaller than the diameter of the valve chamber (512); the one-way valve assembly (52) is installed in the valve chamber (512) to allow the concentrated seawater inlet (511) to... 11) Connected to or disconnected from the concentrated seawater outlet (17), the adjusting cap (53) is fitted and threaded onto the side of the connecting seat (51) where the valve chamber (512) is opened for adjusting the pressure of the one-way valve assembly (52); the one-way valve assembly (52) includes a valve column (521) that slides in the valve chamber (512) and blocks the concentrated seawater inlet (511), a pressure-boosting spring (522) that drives the valve column (521) to move closer to the concentrated seawater inlet (511), and a blocking column (523) that is fixedly installed on the valve column (521) and inserted into the concentrated seawater inlet (511) for blocking; The connecting seat (51) has a sealing groove (513) on one side where the concentrated seawater inlet (511) is located. A sealing gasket (514) is embedded in the sealing groove (513). The concentrated seawater inlet (511) is located inside the sealing gasket (514). The plugging column (523) is inserted into the inner hole of the sealing gasket (514). A water passage (5211) is provided on the outer wall of the valve column (521). The water passage (5211) passes through the valve column (521) along the sliding direction of the valve column (521). A concentrated seawater discharge port (532) communicating with the valve chamber (512) is provided on the adjusting cap (53).A positioning lock plate (54) is sleeved and threadedly mounted on the connecting seat (51), and a threaded groove (531) for threadedly inserting the connecting seat (51) is formed in the side of the adjusting cap (53) close to the connecting seat (51), and an adjusting gap (515) is formed between the groove bottom of the threaded groove (531) and the connecting seat (51).

2. A seawater desalinator as claimed in claim 1, characterised in that: driving nut (42) is fixedly arranged on the connecting sleeve (41), and the positive screw thread portion (411) and the reverse screw thread portion (412) are located at two sides of the driving nut (42) respectively, the positive screw thread portion (411) is sleeved with the first sealing ring (45) for sealing the opening of the first threaded groove (212), and the reverse screw thread portion (412) is sleeved with the second sealing ring (46) for sealing the opening of the second threaded groove (12).

3. A seawater desalinator as claimed in claim 2, characterised in that: The connector (4) further includes a first compression ring piece (43) and a second compression ring piece (44), the first compression ring piece (43) is sleeved and threadedly installed on the positive screw thread portion (411), and the second compression ring piece (44) is sleeved and threadedly installed on the reverse screw thread portion (412). The first sealing ring (45) is located on one side of the first compression ring piece (43) close to the connecting post (21), and the second sealing ring (46) is located on one side of the second compression ring piece (44) away from the driving nut (42). An end of the positive screw thread portion (411) is provided with a first sealing gasket (4111) abutting against a groove bottom of the first threaded groove (212), and an end of the reverse screw thread portion (412) is provided with a second sealing gasket (4121) abutting against a groove bottom of the second threaded groove (12).

4. A seawater desalinator as claimed in claim 1, characterized in that: The bottom of the connecting column (21) is provided with a connecting plate (22), and one side of the shell (1) is provided with a positioning groove (11) for inserting and sliding the connecting plate (22).

5. A seawater desalinator as claimed in claim 1, characterized in that: The mounting groove (13) is provided with a threaded end cover (14) for limiting the reverse osmosis membrane assembly (3) in the mounting groove (13), and the bottom of the mounting groove (13) is provided with a seawater channel (15) in communication with the second threaded groove (12), and the caliber of the seawater channel (15) is smaller than that of the second threaded groove (12).

6. A seawater desalinator as claimed in claim 5, characterised in that: The reverse osmosis membrane assembly (3) comprises a fresh water outlet pipe (31), a permeation membrane filter core (32), a permeation membrane water inlet end cover (33) and a permeation membrane water outlet end cover (34), the permeation membrane filter core (32) is sleeved on the fresh water outlet pipe (31), the fresh water outlet pipe (31) is not in communication with the seawater channel (15), the sidewall of the fresh water outlet pipe (31) is provided with a permeation hole (311) for entering the fresh water generated after filtration, and the threaded end cover (14) is provided with a fresh water outlet channel (141) for inserting and communicating with the fresh water outlet pipe (31); The permeation membrane water inlet end cover (33) is located on the side of the permeation membrane filter core (32) close to the seawater channel (15) and is sleeved on the permeation membrane filter core (32), and the permeation membrane water inlet end cover (33) is provided with a seawater inlet (331) in communication with the seawater channel (15); The permeation membrane water outlet end cover (34) is located on the side of the permeation membrane filter core (32) away from the permeation membrane water inlet end cover (33) and is sleeved on the permeation membrane filter core (32), and the permeation membrane water outlet end cover (34) is provided with a concentrated seawater outlet (17) for discharging the filtered seawater.

7. A seawater desalinator as claimed in claim 6, characterised in that: The partitioning sleeve ring (35) is sleeved on the middle part of the permeation membrane filter core (32), and the concentrated seawater chamber (132) is not in communication with the fresh water outlet channel (141); the partitioning sleeve ring (35) is sleeved with a blocking sealing ring (36), the outer peripheral wall of the blocking sealing ring (36) abuts against the inner peripheral wall of the mounting groove (13), the permeation membrane water inlet end cover (33) is located in the fresh seawater chamber (131), and the permeation membrane water outlet end cover (34) is located in the concentrated seawater chamber (132).

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