CN211419851U

CN211419851U - Small reverse osmosis water treatment device

Info

Publication number: CN211419851U
Application number: CN201922391269.8U
Authority: CN
Inventors: 朱雪梅
Original assignee: CHANGZHOU BIRUIDA WATER TREATMENT TECHNOLOGY CO LTD
Current assignee: CHANGZHOU BIRUIDA WATER TREATMENT TECHNOLOGY CO LTD
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-04
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a small-size reverse osmosis water treatment facilities, including the source water tank, source water tank one side is provided with the water purification case, source water tank opposite side is provided with pure water pump, source water tank front end sets up the active water pump, source water pump one side is provided with the high-pressure pump, be provided with reverse osmosis RO membrane between high-pressure pump and the water purification case, source water pump opposite side is provided with precision filter, the precision filter opposite side is provided with the water softener, the water softener opposite side is provided with activated carbon filter. The utility model discloses compact structure, saving space, the equipment integration of whole water purification in-process is in the same place, reduces the pressure loss between equipment and the problem of recontamination, but wide application in the pure water treatment of pure water, tea beverage allotment water, straight drinking water, brackish water desalination, residential quarter, hospital, hotel, chemical industry, enterprise and public institution etc..

Description

Small reverse osmosis water treatment device

Technical Field

The utility model relates to a water treatment field specifically is a small-size reverse osmosis water treatment facilities.

Background

The reverse osmosis water treatment equipment is generally composed of a source water pretreatment system and a reverse osmosis purification system, wherein municipal tap water is taken as raw water as a treatment object, the water is treated by the reverse osmosis water treatment equipment, and the reverse osmosis water treatment equipment can be widely applied to pure water treatment of purified water, tea drink blending water, direct drinking water, brackish water desalination, residential districts, hospitals, hotels, chemical engineering, enterprises and public institutions and the like Suspended matters, colloid, organic matters, heavy metals, soluble solids, bacteria, viruses, heat sources and other harmful substances only retain water molecules and dissolved oxygen, and the water-making device has the advantages of continuous operation of water making, simple system, convenient operation, low energy consumption, no pollution, stable water quality and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size reverse osmosis water treatment facilities to solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a small-size reverse osmosis water treatment facilities, includes the source water tank, source water tank one side is provided with the water purification case, source water tank opposite side is provided with the pure water pump, source water tank front end sets up the active water pump, source water pump one side is provided with the high-pressure pump, be provided with the reverse osmosis RO membrane between high-pressure pump and the water purification case, source water pump opposite side is provided with precision filter, the precision filter opposite side is provided with the water softener, the water softener opposite side is provided with activated carbon filter, activated carbon filter opposite side is provided with the quartz sand filter, source water pump front end is provided with total controller.

The structure comprises the sand filtration, carbon filtration, softened water, precise filtration and reverse osmosis treatment five-stage filtration system of the small reverse osmosis water treatment device, the whole water purification equipment is integrated, the assembly between the structures is compact, the space is greatly saved, compared with the traditional equipment, the volume is reduced, the movement is realized, the transportation is convenient, and the problems of pressure loss and recontamination between the equipment are reduced; the device can effectively remove silt, suspended matters, colloid, organic matters, heavy metals, soluble solids, bacteria, viruses, heat sources and other harmful substances in raw water, only retains water molecules and dissolved oxygen, and ensures the quality of effluent water; but also can continuously make water, automatically adjust the purified water amount according to the water amount, generally does not need heating, and has low energy consumption and low operation cost.

The water source device is characterized in that a first water inlet pipe and a first overflow pipe are arranged on the upper portion of the water source tank, a first water outlet pipe and a first sewage discharge pipe are arranged on the lower portion of the water source tank, the water source tank and the water source pump are connected through a first water outlet pipe, a first sensor is further arranged on the upper portion of the water source tank, and a second sensor is further arranged on the lower portion of the water source tank.

After above-mentioned first inductor and second inductor sense the water yield in the source water tank, total controller gives the instruction and gives the deep-well pump, adjusts the water yield in the source water tank through first inlet tube and first outlet pipe, if the inductor breaks down and causes source water overflow, the valve of the first overflow pipe of total controller control is opened, and the water that the overflow was discharged prevents that source water from leaking outward and causing the device to break down, prevents that source water from leaking outward and makes for the user troublesome.

The upper part of the quartz sand filter is provided with a first multifunctional control valve, the source water pump is connected with the first multifunctional control valve through a second water outlet pipe, and the first multifunctional control valve is also connected with a second sewage discharge pipe;

the activated carbon filter is provided with a second multifunctional control valve, the first multifunctional control valve and the second multifunctional control valve are connected through a third water outlet pipe, and the second multifunctional control valve is also connected with a third sewage discharge pipe;

the water softener is provided with a third multifunctional control valve, the third multifunctional control valve and the second multifunctional control valve are connected through a fourth water outlet pipe, the third multifunctional control valve is further connected with a fourth blow-off pipe, the rear end of the water softener is provided with a salt tank, and the salt tank and the water softener are connected through a brine pipe.

The quartz sand filter, the activated carbon filter and the water softener softening process jointly form a pretreatment system of the reverse osmosis water treatment device, and the quartz sand filter takes quartz sand as a filter medium, so that large particle impurities such as suspended matters, organic matters, colloidal particles and the like in source water can be effectively intercepted, and the turbidity of the source water is reduced to a greater extent; the activated carbon filter can adsorb pollutants such as micromolecular organic matters, heavy metal ions and the like, can effectively remove color and odor, can also remove residual chlorine, and prevents a subsequent reverse osmosis RO membrane from being oxidized and degraded by the residual chlorine; the water softener removes calcium and magnesium ions in water by using sodium type cation exchange resin, and reduces the hardness of raw water, thereby preventing carbonate from scaling in pipelines and containers and damaging equipment. In addition, each multifunctional control valve can automatically complete quartz sand filtration, activated carbon filtration and backwashing of a water softener, so that impurity blockage in equipment is prevented, water purification efficiency is reduced, and even the equipment is damaged.

The precision filter is connected with the third multifunctional control valve through a fifth water outlet pipe, the high-pressure pump is connected with the precision filter through a sixth water outlet pipe, and the reverse osmosis RO membrane is connected with the high-pressure pump through a seventh water outlet pipe.

The precision filter and the reverse osmosis RO membrane jointly form a reverse osmosis purification system of the reverse osmosis water treatment device; the precise filter further removes very fine impurities such as oil mist, solid particles and the like in the source water, and the impurities such as inorganic salts, heavy metal ions, organic matters, colloid, bacteria, viruses and the like in the source water cannot pass through the reverse osmosis RO membrane, so that the source water reaches the edible standard.

And a high-pressure switch is arranged at one end of the high-pressure pump connected with the sixth water outlet pipe, and a low-pressure switch is arranged at one end of the high-pressure pump connected with the seventh water outlet pipe.

The high-pressure pump is used for pumping water in the precision filter into the reverse osmosis RO membrane for further treatment, when the pressure at one end of the high-pressure pump reaches the pressure value set by the high-pressure switch, or the pressure at the other end of the high-pressure pump reaches the pressure value set by the low-pressure switch, the operation of equipment is not smooth, and at the moment, the master controller controls the high-pressure switch or the low-pressure switch to be switched off, so that the whole system stops operating, the equipment is prevented from being damaged, and the equipment is operated again after the fault is. The safety of the whole device is improved, the damage probability of the equipment is reduced, and the service life of the equipment is prolonged.

Water purification case upper portion is provided with second inlet tube and second overflow pipe, water purification case and reverse osmosis RO membrane pass through the second water piping connection, water purification case lower part is provided with pure water outlet pipe and fifth blow off pipe, pure water outlet pipe and pure water pump connection, water purification case upper portion still is provided with the third inductor, water purification case lower part still is provided with the fourth inductor.

The setting of above-mentioned third inductor, fourth inductor can realize controlling opening of whole device according to the liquid level and stopping, and when the liquid level was higher than the third inductor, the device stop work, when the liquid level was less than the fourth inductor, the device began to work, can be with the realization device along with needs water purification volume, not only nimble but also can realize continuously moving, and the running cost reduces.

The first overflow pipe, the first sewage discharge pipe, the second sewage discharge pipe, the third sewage discharge pipe, the fourth sewage discharge pipe, the second overflow pipe and the fifth sewage discharge pipe are all communicated with the total outlet.

The pipelines are communicated, so that the advantages of compact structure, small size, convenience in transportation and the like can be realized.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to a small-size reverse osmosis water treatment facilities's sand filtration, carbon are strained, softened water, secondary filter, and reverse osmosis treatment five-stage filtration system, be in the same place whole water purification unit is integrated, the assembly is compact between the structure, has greatly practiced thrift the space, compares in the volume of traditional equipment diminishes, can remove, the transportation of being convenient for, reduces the pressure loss between equipment and the problem of recontamination, and system water in succession moreover, according to the water yield automatic adjustment water purification volume, the energy consumption is low, and the running cost is low.

2. The design of source water tank can the auto-induction inflow, prevents that source water from leaking outward and causing the device to break down, makes for the user troublesome.

3. The pretreatment system formed by quartz sand filtration, activated carbon filtration and water softener softening together, and the reverse osmosis purification system formed by a precision filter and a reverse osmosis RO membrane together have compact structure, can realize automatic backwashing, reduce the volume of equipment, save manual workload and ensure that source water reaches edible standard.

4. The pressure switch can stop the whole system to prevent the equipment from being damaged, and the pressure switch can be operated again after the fault is removed, so that the safety of the whole device is improved, the damage probability of the equipment is reduced, and the service life of the equipment is prolonged.

5. The design of the water purifying tank can realize that the device can purify water quantity along with the requirement, not only is flexible, but also can realize continuous operation, and the operation cost is reduced.

Drawings

FIG. 1 is a top view of a small reverse osmosis water treatment device according to the present invention;

FIG. 2 is a top view of the source water tank of the present invention;

FIG. 3 is a front view of the source water tank of the present invention;

FIG. 4 is a top view of the water purifying tank of the present invention;

FIG. 5 is a front view of the water purifying tank of the present invention;

FIG. 6 is a top view of the pretreatment system of the present invention;

fig. 7 is a top view of the reverse osmosis purification system of the present invention.

Reference numerals: 1. a source water tank; 101. a first water inlet pipe; 102. a first overflow pipe; 103. a first drain pipe; 104. a first inductor; 105. a second inductor; 2. a water purifying tank; 201. a second water inlet pipe; 202. a second overflow tube; 203. a fifth sewage draining pipe; 204. a third inductor; 205. a fourth inductor; 3. a pure water pump; 4. a source water pump; 5. a high pressure pump; 501. a high voltage switch; 502. a low voltage switch; 6. a Reverse Osmosis (RO) membrane; 7. a precision filter; 8. a water softener; 801. a third multi-function control valve; 802. a fourth blow-off pipe; 803. a salt box; 804. a brine pipe; 9. an activated carbon filter; 901. a second multi-function control valve; 902. a third blow-off pipe; 10. a quartz sand filter; 1001. a first multi-function control valve; 1002. a second sewage draining pipe; 11. a master controller; 12. a first water outlet pipe; 13. a second water outlet pipe; 14. a third water outlet pipe; 15. a fourth water outlet pipe; 16. a fifth water outlet pipe; 17. a sixth water outlet pipe; 18. a seventh water outlet pipe; 19. a pure water outlet pipe; 20. and a main outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1 to 7, a small reverse osmosis water treatment apparatus comprises a source water tank 1, a source water tank 1 for containing source water pumped by a deep well pump and provided with a purified water tank 2 on one side of the source water tank 1, the purified water tank 2 for containing pure water treated by the small reverse osmosis water treatment apparatus, a purified water pump 3 on the other side of the source water tank 1, the purified water pump 3 for pumping out purified water in the purified water tank 2, the purified water pump 3 being of PW125 type, a source water pump 4 provided at the front end of the source water tank 1, the source water pump 4 being of BW2-4 type, the source water pump 4 for pumping out source water in the source water tank 1 for the next purification step, a high pressure pump 5 provided on one side of the source water pump 4, the high pressure pump 5 being of BLT2-11S type, the high pressure pump 5 for pumping water treated by a precision filter 7 into a reverse osmosis RO membrane 6, a reverse osmosis RO membrane 6 provided between the high pressure pump 5 and the purified water tank 2, the model of the reverse osmosis RO membrane 6 is M4040, the other side of the source water pump 4 is provided with a precision filter 7, the model of the precision filter 7 is RY-J-3-20, the other side of the precision filter 7 is provided with a water softener 8, the model of the water softener 8 is BRD-RS/Q-2, the other side of the water softener 8 is provided with an active carbon filter 9, the model of the active carbon filter 9 is BRD-HXT-250, the other side of the active carbon filter 9 is provided with a quartz sand filter 10, the model of the quartz sand filter 10 is BRD-SYS-250, the quartz sand filter 10 is used for intercepting large-particle impurities such as suspended matters, organic matters, colloidal particles and the like in source water, the active carbon filter 9 is used for adsorbing polluting substances such as micromolecular organic matters, heavy metal ions and the like, removing color, removing odor and residual chlorine, preventing the subsequent reverse, the water softener 8 removes calcium and magnesium ions in water by using sodium type cation exchange resin to reduce the hardness of raw water, the precision filter 7 further removes oil mist, solid particles and other very fine impurities in source water, and the reverse osmosis RO membrane 6 is used for removing inorganic salt, heavy metal ions, organic matters, colloid, bacteria, viruses and other impurities in the source water to ensure that the source water reaches edible standards. Source water in the raw water tank 1 is pumped into a quartz sand filter 10 through a source water pump 4 to filter impurities, the filtered source water enters an active carbon filter 9 to remove odor and color, the filtered source water enters a water softener 8 to remove salt and soften, the softened source water enters a precision filter 7 to be precisely filtered, finally, the water is pumped into a reverse osmosis RO membrane 6 through a high-pressure pump 5 to be highly filtered, the filtered pure water enters a pure water tank 2, and the pure water pump 3 pumps out the pure water in the pure water tank 2 for users to use. The front end of the source water pump 4 is provided with a master controller 11, and the master controller 11 is used for connecting a circuit and controlling the operation of each part by using a program. The other end of the first water inlet pipe 101 is connected with a deep well pump, and source water is pumped into a raw water tank by the deep well pump.

The upper part of the source water tank 1 is provided with a first water inlet pipe 101 and a first overflow pipe 102, the lower part of the source water tank 1 is provided with a first water outlet pipe 12 and a first drain pipe 103, the source water tank 1 is connected with the source water pump 4 through the first water outlet pipe 12, the upper part of the source water tank 1 is also provided with a first inductor 104, the lower part of the source water tank 1 is also provided with a second inductor 105, and the models of the first inductor 104 and the second inductor 105 are BRD-FQ-P1. When the water level in the source water tank 1 is too low, the second sensor 105 transmits a signal to the master controller 11, the master controller 11 closes the valve of the first drain pipe 103, an instruction is sent to the deep well pump to enable the deep well pump to operate to increase the water amount in the source water tank 1, when the water level in the source water tank 1 is too high, the first sensor 104 transmits a signal to the master controller 11, the master controller 11 sends an instruction to the deep well pump to enable the deep well pump to stop operating, if the sensor fails to cause source water overflow, the first overflow pipe 102 discharges the overflow water, when the impurities in the source water tank 1 are too much, the master controller opens the valves of the first water inlet pipe 101 and the first drain pipe 103, closes the valves of the first overflow pipe 102 and the first water outlet pipe 12, and flushes the impurities out of the source water tank 1.

A first multifunctional control valve 1001 is arranged at the upper part of the quartz sand filter 10, the model of the first multifunctional control valve 1001 is F71Q1, the source water pump 4 is connected with the first multifunctional control valve 1001 through a second water outlet pipe 13, and the first multifunctional control valve 1001 is also connected with a second sewage discharge pipe 1002; when the quartz sand filter 10 filters impurities, the first multifunctional control valve 1001 controls to open the second water outlet pipe 13 and close the second sewage discharge pipe 1002, so that the quartz sand filter can be normally filtered, the first multifunctional control valve 1001 sets filtering time of 48 hours for backwashing, the first multifunctional control valve 1001 controls to open the second water outlet pipe 13 and the second sewage discharge pipe 1002 during backwashing, and the impurities in the quartz sand filter 10 are discharged through the second sewage discharge pipe 1002.

A second multifunctional control valve 901 is arranged on the activated carbon filter 9, the model of the second multifunctional control valve 901 is F71Q1, the first multifunctional control valve 1001 and the second multifunctional control valve 901 are connected through a third water outlet pipe 14, and the second multifunctional control valve 901 is also connected with a third sewage discharge pipe 902; when the activated carbon filter 9 filters impurities, the second multifunctional control valve 901 controls to open the third water outlet pipe 14, close the third sewage discharge pipe 902 to enable the third sewage discharge pipe 902 to filter normally, and set the second multifunctional control valve 901 to filter for 48 hours for backwashing, and during backwashing, the second multifunctional control valve 901 controls to open the third water outlet pipe 14 and the third sewage discharge pipe 902 to enable the impurities in the activated carbon filter 9 to be discharged through the third sewage discharge pipe 902.

The water softener 8 is provided with a third multifunctional control valve 801, the model of the third multifunctional control valve 801 is F71Q1, the third multifunctional control valve 801 is connected with the second multifunctional control valve 901 through a fourth water outlet pipe 15, the third multifunctional control valve 801 is also connected with a fourth sewage draining pipe 802, the rear end of the water softener 8 is provided with a salt tank 803, and the salt tank 803 and the water softener 8 are connected through a salt water pipe 804; when the water softener 8 filters impurities, the third multifunctional control valve 801 controls to open the fourth water outlet pipe 15, the fourth sewage discharge pipe 802 is closed to enable the water softener to filter normally, in addition, the third multifunctional control valve 801 is set to filter for 48h to carry out resin regeneration, the third multifunctional control valve 801 controls to open the valve of the brine pipe 804 during the resin regeneration, the fourth water outlet pipe 15 is closed, brine in the brine tank 803 enters the water softener 8 to carry out chemical reaction to enable the resin to regenerate, and then the fourth sewage discharge pipe 802 is opened to enable sewage to be discharged out of the water softener 8.

The quartz sand filter 10, the activated carbon filter 9 and the water softener 8 form a pretreatment system of the small reverse osmosis water treatment device.

The precision filter 7 is connected with the third multifunctional control valve 801 through a fifth water outlet pipe 16, the high-pressure pump 5 is connected with the precision filter 7 through a sixth water outlet pipe 17, and the reverse osmosis RO membrane 6 is connected with the high-pressure pump 5 through a seventh water outlet pipe 18. The water treated by the water softener 8 enters the precision filter 7 through the fifth water outlet pipe 16 for precision filtration, and then enters the reverse osmosis RO membrane 6 through the sixth water outlet pipe 17, the high pressure pump 5 and the seventh water outlet pipe 18 in sequence for final purification. The precision filter 7 and the reverse osmosis RO membrane 6 constitute a reverse osmosis purification system of a small reverse osmosis water treatment device.

One end of the high-pressure pump 5 connected with the sixth water outlet pipe 17 is provided with a high-pressure switch 501, one end of the high-pressure pump 5 connected with the seventh water outlet pipe 18 is provided with a low-pressure switch 502, and the high-pressure switch 501 and the low-pressure switch 502 are of FNC-K-30 types. When the pressure at the high-pressure switch 501 is higher than the set value or the pressure at the low-pressure switch 502 is lower than the set value, it indicates that the small reverse osmosis water treatment device is not smooth in operation, and at this time, the master controller 11 controls the high-pressure switch 501 or the low-pressure switch 502 to be switched off, and the small reverse osmosis water treatment device stops operating and is checked.

The upper part of the water purification tank 2 is provided with a second water inlet 201 and a second overflow pipe 202, the water purification tank 2 is connected with the reverse osmosis RO membrane 6 through the second water inlet pipe 201, the lower part of the water purification tank 2 is provided with a pure water outlet pipe 19 and a fifth sewage discharge pipe 203, the pure water outlet pipe 19 is connected with the pure water pump 3, the upper part of the water purification tank 2 is also provided with a third inductor 204, the lower part of the water purification tank 2 is also provided with a fourth inductor 205, and the model of the third inductor 204 and the fourth inductor 205 is BRD-FQ-P1. When the water level in the water purification tank 2 is too low, the fourth sensor 205 transmits a signal to the master controller 11, the master controller 11 closes the valve of the fifth sewage discharge pipe 203, and sends an instruction to the source water pump 4 and the high-pressure pump 5 to enable the source water pump and the high-pressure pump 5 to operate so as to increase the water quantity in the water purification tank 2, when the water level in the water purification tank 2 is too high, the third sensor 204 transmits a signal to the master controller 11, the master controller 11 sends an instruction to the source water pump 4 and the high-pressure pump 5 to enable the source water pump and the high-pressure pump 5 to stop operating, if the sensors are broken down so as to cause the source water to overflow, the second overflow pipe 202 discharges the overflow water, and when the impurities in the water purification tank 2 are too much, the master controller opens the valves of the second water inlet 201 and the fifth sewage discharge pipe 203, closes the valves of the second overflow pipe 202 and.

The first overflow pipe 102, the first sewage discharge pipe 103, the second sewage discharge pipe 1002, the third sewage discharge pipe 902, the fourth sewage discharge pipe 802, the second overflow pipe 202 and the fifth sewage discharge pipe 203 are all communicated with the total outlet 20, and the total outlet is provided with a compact whole device.

All the pipelines, control valves, control switches, pump bodies, filters and inductors mentioned in the scheme are in telecommunication connection with a master controller 11 and are controlled to operate through the master controller 11.

The utility model discloses a theory of operation is: source water in the raw water tank 1 is pumped into a quartz sand filter 10 through a source water pump 4 to filter impurities, the filtered source water enters an active carbon filter 9 to remove odor and color, the filtered source water enters a water softener 8 to remove salt and soften, the softened source water enters a precision filter 7 to be precisely filtered, finally, the water is pumped into a reverse osmosis RO membrane 6 through a high-pressure pump 5 to be highly filtered, the filtered pure water enters a pure water tank 2, and the pure water pump 3 pumps out the pure water in the pure water tank 2 for users to use. The front end of the source water pump 4 is provided with a master controller 11, and the master controller 11 is used for connecting a circuit and controlling the operation of each part by using a program; the master controller 11 controls the high-voltage switch 501 and the low-voltage switch 502 to ensure the system safety; the upper and lower liquid level sensors in the water purification tank 2 control the start and stop of a small reverse osmosis water treatment device according to a liquid level transmission signal to the master controller 11.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, 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 sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A small reverse osmosis water treatment device, comprising a source water tank (1), characterized in that: source water tank (1) one side is provided with water purification case (2), source water tank (1) opposite side is provided with pure water pump (3), source water tank (1) front end is provided with active water pump (4), source water pump (4) one side is provided with high-pressure pump (5), be provided with reverse osmosis RO membrane (6) between high-pressure pump (5) and water purification case (2), source water pump (4) opposite side is provided with precision filter (7), precision filter (7) opposite side is provided with water softener (8), water softener (8) opposite side is provided with activated carbon filter (9), activated carbon filter (9) opposite side is provided with quartz sand filter (10), source water pump (4) front end is provided with total controller (11).

2. The small reverse osmosis water treatment device according to claim 1, wherein: the water supply device is characterized in that a first water inlet pipe (101) and a first overflow pipe (102) are arranged on the upper portion of the source water tank (1), a first water outlet pipe (12) and a first drain pipe (103) are arranged on the lower portion of the source water tank (1), the source water tank (1) is connected with the source water pump (4) through the first water outlet pipe (12), a first inductor (104) is further arranged on the upper portion of the source water tank (1), and a second inductor (105) is further arranged on the lower portion of the source water tank (1).

3. A compact reverse osmosis water treatment plant according to claim 2 wherein: a first multifunctional control valve (1001) is arranged at the upper part of the quartz sand filter (10), the source water pump (4) is connected with the first multifunctional control valve (1001) through a second water outlet pipe (13), and the first multifunctional control valve (1001) is also connected with a second sewage discharge pipe (1002);

a second multifunctional control valve (901) is arranged on the activated carbon filter (9), the first multifunctional control valve (1001) and the second multifunctional control valve (901) are connected through a third water outlet pipe (14), and a third sewage discharge pipe (902) is also connected to the second multifunctional control valve (901);

be provided with third multi-functional control valve (801) on water softener (8), third multi-functional control valve (801) and second multi-functional control valve (901) are connected through fourth outlet pipe (15), still connect fourth blow off pipe (802) on third multi-functional control valve (801), water softener (8) rear end is provided with salt case (803), salt case (803) and water softener (8) are connected through salt water pipe (804).

4. A compact reverse osmosis water treatment plant according to claim 3 wherein: the precision filter (7) is connected with the third multifunctional control valve (801) through a fifth water outlet pipe (16), the high-pressure pump (5) is connected with the precision filter (7) through a sixth water outlet pipe (17), and the reverse osmosis RO membrane (6) is connected with the high-pressure pump (5) through a seventh water outlet pipe (18).

5. The small scale reverse osmosis water treatment device according to claim 4, wherein: one end of the high-pressure pump (5) connected with the sixth water outlet pipe (17) is provided with a high-pressure switch (501), and one end of the high-pressure pump (5) connected with the seventh water outlet pipe (18) is provided with a low-pressure switch (502).

6. The small reverse osmosis water treatment device according to claim 5, wherein: water purification case (2) upper portion is provided with second inlet tube (201) and second overflow pipe (202), water purification case (2) and reverse osmosis RO membrane (6) are connected through second inlet tube (201), water purification case (2) lower part is provided with pure water outlet pipe (19) and fifth blow off pipe (203), pure water outlet pipe (19) and pure water pump (3) are connected, water purification case (2) upper portion still is provided with third inductor (204), water purification case (2) lower part still is provided with fourth inductor (205).

7. The small scale reverse osmosis water treatment device according to claim 6, wherein: the first overflow pipe (102), the first sewage discharge pipe (103), the second sewage discharge pipe (1002), the third sewage discharge pipe (902), the fourth sewage discharge pipe (802), the second overflow pipe (202) and the fifth sewage discharge pipe (203) are all communicated with the main outlet (20).