A balance system for the pressures on both sides of an EDR membrane stack

Abstract

The present invention relates to a pressure balance system for both sides of an EDR membrane stack, aiming to balance the pressures on both sides of the EDR membrane stack and improve the service life and water purification efficiency of the EDR membrane stack. A pressure balance system for both sides of an EDR membrane stack includes a first raw water inlet end, a second raw water inlet end, an EDR membrane stack, a first pressure sensor, a second pressure sensor, a third pressure sensor, a fourth pressure sensor, a speed-regulating circulation pump, a check valve, a purified water outlet end, a wastewater outlet end, and a control system module. Among them, the EDR membrane stack includes a first water inlet end, a second water inlet end, a first water outlet end, and a second water outlet end; the first raw water inlet end, the first pressure sensor, and the first water inlet end of the EDR membrane stack are connected in sequence; the second raw water inlet end, the check valve, the third pressure sensor, and the second water inlet end of the EDR membrane stack are connected in sequence; the first water outlet end of the EDR membrane stack, the second pressure sensor, and the purified water outlet end are connected in sequence; the second water outlet end of the EDR membrane stack, the fourth pressure sensor, and the wastewater outlet end are connected in sequence; the speed-regulating circulation pump is respectively connected to the check valve and the wastewater outlet end; the control system module is electrically connected to the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, and the speed-regulating circulation pump. The present invention reads the pressures of the 4 water ports at both ends of the EDR membrane stack through four pressure sensors, and adjusts the pressure of the wastewater outlet water path through the speed-regulating circulation pump and the control system module, so as to make the pressure of the purified water outlet water path equivalent to that of the wastewater outlet water path, thereby balancing the pressures on both sides of the membrane stack and improving the service life and water purification efficiency of the EDR membrane stack.

Description

Technical Field

[0001] The present invention relates to a pressure balance system on both sides of a water purification filter membrane, and more particularly to a pressure balance system on both sides of an EDR membrane stack. Background Art

[0002] With the continuous improvement of people's living standards, most families have generally installed water purifiers to ensure drinking water health. However, after long-term use of water purifiers, especially EDR water purifiers, due to different pressures on both sides of the EDR membrane stack, it is easy to cause damage to the membrane stack, thereby affecting the service life of the membrane stack. The membrane stack needs to be frequently replaced, resulting in a decrease in the use efficiency of the water purifier.

[0003] In response to this situation, there is no good solution in the prior art. Summary of the Invention

[0004] The main object of the present invention is to provide a pressure balance system on both sides of an EDR membrane stack. By setting four pressure sensors to read the pressures of 4 water inlets at both ends of the EDR membrane stack, a speed-regulating circulation pump and a control system module are used to adjust the pressure of the waste water outlet water path, so as to make the pressure of the purified water outlet water path equivalent to that of the waste water outlet water path, thereby balancing the pressures on both sides of the membrane stack and improving the service life and water purification efficiency of the EDR membrane stack.

[0005] To achieve the above object, the technical solution adopted is: a pressure balance system on both sides of an EDR membrane stack, including a first raw water inlet end, a second raw water inlet end, an EDR membrane stack, a first pressure sensor, a second pressure sensor, a third pressure sensor, a fourth pressure sensor, a speed-regulating circulation pump, a one-way valve, a purified water outlet end, a waste water outlet end, and a control system module. Among them, the EDR membrane stack includes a first water inlet end, a second water inlet end, a first water outlet end, and a second water outlet end; the first raw water inlet end, the first pressure sensor, and the first water inlet end of the EDR membrane stack are connected in sequence; the second raw water inlet end, the one-way valve, the third pressure sensor, and the second water inlet end of the EDR membrane stack are connected in sequence; the first water outlet end of the EDR membrane stack, the second pressure sensor, and the purified water outlet end are connected in sequence; the second water outlet end of the EDR membrane stack, the fourth pressure sensor, and the waste water outlet end are connected in sequence; the speed-regulating circulation pump is respectively connected to the one-way valve and the waste water outlet end; the control system module is respectively electrically connected to the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, and the speed-regulating circulation pump.

[0006] Further, it further includes a flushing solenoid valve. The flushing solenoid valve is respectively connected to the speed-regulating circulation pump and the waste water outlet end, and the control system module is electrically connected to the flushing solenoid valve.

[0007] The working principle of the present invention is as follows: Four pressure sensors are set to read the pressures of the four water inlets at both ends of the EDR membrane stack. When the purified water outlet end is opened, the purified water flows out. At this time, the pressure of the purified water outlet water path decreases, and the pressure sensor feeds back the signal to the control system module. The control system module prompts to adjust the speed of the speed-regulating circulation pump (increase the speed) to adjust the pressure of the wastewater outlet water path (decrease), so as to make the pressures of the purified water outlet water path and the wastewater outlet water path equivalent.

[0008] The present invention adopts the pressure balance system on both sides of this EDR membrane stack to balance the pressures on both sides of the membrane stack and improve the service life and purified water efficiency of the EDR membrane stack. Brief Description of the Drawings

[0009] Figure 1 It is a schematic structural diagram of a pressure balance system on both sides of an EDR membrane stack.

[0010] 1. First raw water inlet end, 2. First pressure sensor, 3. EDR membrane stack, 4. Second pressure sensor, 5. Purified water outlet end, 6. Second raw water inlet end, 7. Check valve, 8. Third pressure sensor, 9. Speed-regulating circulation pump, 10. Fourth pressure sensor, 11. Wastewater outlet end, 12. Flushing solenoid valve, 13. First water inlet end, 14. Second water inlet end, 15. First water outlet end, 16. Second water outlet end, 17. Control system module. Detailed Embodiments

[0011] Refer to Figure 1 The specific description is as follows: A pressure balance system on both sides of an EDR membrane stack includes a first raw water inlet end 1, a second raw water inlet end 6, an EDR membrane stack 3, a first pressure sensor 2, a second pressure sensor 4, a third pressure sensor 8, a fourth pressure sensor 10, a speed-regulating circulation pump 9, a check valve 7, a purified water outlet end 5, a wastewater outlet end 11, and a control system module 17. Among them, the EDR membrane stack 3 includes a first water inlet end 13, a second water inlet end 14, a first water outlet end 15, and a second water outlet end 16; the first raw water inlet end 1, the first pressure sensor 2, and the first water inlet end 13 of the EDR membrane stack are connected in sequence; the second raw water inlet end 6, the check valve 7, the third pressure sensor 8, and the second water inlet end 14 of the EDR membrane stack are connected in sequence; the first water outlet end 15 of the EDR membrane stack 3, the second pressure sensor 4, and the purified water outlet end 5 are connected in sequence; the second water outlet end 16 of the EDR membrane stack 3, the fourth pressure sensor 10, and the wastewater outlet end 11 are connected in sequence; the speed-regulating circulation pump 9 is respectively connected to the check valve 7 and the wastewater outlet end 11, and the control system module 17 is respectively electrically connected to the first pressure sensor 2, the second pressure sensor 4, the third pressure sensor 8, the fourth pressure sensor 10, and the speed-regulating circulation pump 9.

[0012] Further, it further includes a flushing solenoid valve 12. The flushing solenoid valve 12 is respectively connected to the speed-regulating circulation pump 9 and the wastewater outlet end 11. The control system module 17 is electrically connected to the flushing solenoid valve 12, so as to further adjust the pressure of the wastewater outlet water path and balance the pressures on both sides of the EDR membrane stack.

[0013] Embodiment

[0014] As Figure 1 As shown, the pressure balance system on both sides of the EDR membrane stack includes a first raw water inlet end 1, a second raw water inlet end 6, an EDR membrane stack 3, a first pressure sensor 2, a second pressure sensor 4, a third pressure sensor 8, a fourth pressure sensor 10, a speed-regulating circulation pump 9, a check valve 7, a purified water outlet end 5, a wastewater outlet end 11, and a flushing solenoid valve 12. Among them, the EDR membrane stack 3 includes a first water inlet end 13, a second water inlet end 14, a first water outlet end 15, and a second water outlet end 16; the first raw water inlet end 1, the first pressure sensor 2, and the first water inlet end 13 of the EDR membrane stack are connected in sequence; the second raw water inlet end 6, the check valve 7, the third pressure sensor 8, and the second water inlet end 14 of the EDR membrane stack are connected in sequence; the first water outlet end 15 of the EDR membrane stack 3, the second pressure sensor 4, and the purified water outlet end 5 are connected in sequence; the second water outlet end 16 of the EDR membrane stack 3, the fourth pressure sensor 10, and the wastewater outlet end 11 are connected in sequence; the speed-regulating circulation pump 9 is respectively connected to the check valve 7 and the wastewater outlet end 11, and the flushing solenoid valve 12 is respectively connected to the speed-regulating circulation pump 9 and the wastewater outlet end 11; the control system module 17 is respectively electrically connected to the first pressure sensor 2, the second pressure sensor 4, the third pressure sensor 8, the fourth pressure sensor 10, the speed-regulating circulation pump 9, and the flushing solenoid valve 12.

[0015] The working principle of the pressure balance system on both sides of the EDR membrane stack is as follows: Four pressure sensors (2, 4, 8, 10) are set to read the pressures at the four water ports (13, 14, 15, 16) at both ends of the EDR membrane stack 3. When the purified water outlet end 5 is opened and the purified water flows out, the pressure of the purified water outlet water path drops at this time. The second pressure sensor 4 feeds back the signal to the control system module 17. The control system module 17 prompts to adjust the speed of the speed-regulating circulation pump 9 (increase the speed) and open the flushing solenoid valve 12 to adjust the pressure of the wastewater outlet water path (decrease), so as to make the pressure of the purified water outlet water path equivalent to that of the wastewater outlet water path, thereby balancing the pressures on both sides of the EDR membrane stack 3 and improving the service life and purified water efficiency of the EDR membrane stack 3.

[0016] The above-described embodiments and examples only represent several embodiments of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. An EDR membrane stack two - side pressure balance system, characterized in that, It includes a first raw water inlet end, a second raw water inlet end, an EDR membrane stack, a first pressure sensor, a second pressure sensor, a third pressure sensor, a fourth pressure sensor, a speed-regulating circulation pump, a check valve, a purified water outlet end, a wastewater outlet end, and a control system module. Among them, the EDR membrane stack includes a first inlet end, a second inlet end, a first outlet end, and a second outlet end; the first raw water inlet end, the first pressure sensor, and the first inlet end of the EDR membrane stack are connected in sequence; the second raw water inlet end, the check valve, the third pressure sensor, and the second inlet end of the EDR membrane stack are connected in sequence; the first outlet end of the EDR membrane stack, the second pressure sensor, and the purified water outlet end are connected in sequence; the second outlet end of the EDR membrane stack, the fourth pressure sensor, and the wastewater outlet end are connected in sequence; the speed-regulating circulation pump is respectively connected to the check valve and the wastewater outlet end; the control system module is respectively electrically connected to the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, and the speed-regulating circulation pump.

2. The EDR membrane stack two - side pressure balance system according to claim 1, characterized in that: It further includes a flushing solenoid valve. The flushing solenoid valve is respectively connected to the speed-regulating circulation pump and the wastewater outlet end, and the control system module is electrically connected to the flushing solenoid valve.

Images