Efficient reverse osmosis water treatment device

Abstract

The invention discloses an efficient reverse osmosis water treatment device, and belongs to the technical field of water treatment. An efficient reverse osmosis water treatment device comprises a shell, a filter assembly is arranged in the shell, a reverse osmosis membrane assembly is arranged below the shell, a cavity is formed between the filter assembly and the reverse osmosis membrane assembly, and a stirring mechanism is arranged in the cavity; the stirring mechanism comprises a mounting shaft, a driving mechanism is mounted at the upper end of the mounting shaft, a barrel sleeves the mounting shaft, and a limiting rail is arranged on the barrel; movable shafts are in sliding fit with the two sides of the limiting rail, a mounting frame is arranged on one side of each movable shaft, and the movable shafts can be in sliding fit along the mounting frames in the vertical direction; the side face of the movable shaft is connected with a push rod, and the push rod makes contact with the top face of the stirring blade set. The device directly acts on a concentrated water layer above a reverse osmosis membrane through composite motion of rotation and up-down reciprocating of the stirring mechanism, so that strong turbulent flow is formed, impurity aggregates are efficiently scattered, and deposition and blockage on the surface of the membrane are avoided.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and more specifically, to a high-efficiency reverse osmosis water treatment device. Background Technology

[0002] Reverse osmosis water treatment technology, as one of the most mature advanced water purification technologies, has been widely applied in numerous scenarios such as industrial wastewater treatment, drinking water purification, seawater desalination, and commercial water purification due to its advantages such as high-efficiency desalination, high-purity water, and stable operation. Against the backdrop of increasingly prominent global water scarcity and water pollution problems, the market demand for reverse osmosis devices continues to grow, and the industry's requirements for their treatment efficiency, operational stability, and ease of maintenance are constantly increasing.

[0003] However, during the operation of traditional reverse osmosis (RO) systems, impurities such as suspended solids, colloids, microorganisms, and sparingly soluble salts in the raw water are trapped on the concentrate side surface of the RO membrane. Over time, this accumulation can form a dense fouling layer, leading to a rapid decline in membrane flux, reduced permeate efficiency, and even irreversible damage to the membrane module. To alleviate clogging, current technologies often employ periodic chemical cleaning or physical flushing. However, frequent cleaning not only shortens the membrane module's lifespan (typically only 2-3 years) but also increases chemical consumption and maintenance costs, and fails to fundamentally prevent impurity deposition.

[0004] In summary, developing a reverse osmosis water treatment device that can fundamentally alleviate reverse osmosis membrane clogging and improve water treatment efficiency has become a key technical problem that the industry urgently needs to solve. Therefore, we propose a high-efficiency reverse osmosis water treatment device. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency reverse osmosis water treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency reverse osmosis water treatment device includes a shell, a filter assembly is disposed inside the shell, a reverse osmosis membrane assembly is disposed below the shell, a cavity is formed between the filter assembly and the reverse osmosis membrane assembly, and an agitation mechanism is disposed inside the cavity. The stirring mechanism includes a mounting shaft, a drive mechanism is mounted on the upper end of the mounting shaft, a cylinder is sleeved on the mounting shaft, and a limit track is provided on the cylinder. The limit track includes two vertical parts and two connecting parts arranged opposite to each other. The connecting parts are inclined, and one end of the connecting part is connected to the upper end of one of the vertical parts, and the other end is connected to the lower end of the other vertical part. Both sides of the limiting track are slidably fitted with movable shafts, and a mounting bracket is provided on one side of the movable shaft. The movable shaft can slide along the mounting bracket in the vertical direction. A stirring blade assembly is fitted at the lower end of the mounting shaft. A spring is installed at the bottom of the stirring blade assembly. The lower end of the spring is connected to the boss on the mounting shaft, and the upper end of the spring is connected to the bottom surface of the stirring blade assembly. A push rod is connected to the side of the movable shaft, and the push rod contacts the top surface of the stirring blade assembly.

[0007] Preferably, a mounting sleeve is fitted onto the movable shaft, and a second spring is installed inside the mounting sleeve. The end of the second spring is connected to the movable shaft, and the movable shaft and the mounting sleeve are in sliding fit.

[0008] Preferably, a slider is provided on one side of the mounting cylinder, and a groove is provided on the mounting frame, with the end of the slider extending into the groove and slidingly engaging with the groove.

[0009] Preferably, the upper ends of the two mounting brackets are provided with connecting plates, which are rotatably connected to the mounting shaft. The outer side of the connecting plates is provided with mounting rods, and the inner wall of the housing is provided with two fixing rods, the ends of which are connected to the fixing rods.

[0010] Preferably, two limiting rings are also provided inside the housing, with the two limiting rings located on the top and bottom surfaces of the reverse osmosis membrane module, respectively.

[0011] Preferably, a cover is provided on the top of the housing, and the drive mechanism is a motor mounted on the cover, with the output shaft of the motor connected to the mounting shaft.

[0012] Preferably, a water inlet pipe is provided on the cover, and a water outlet pipe is provided at the bottom of the shell.

[0013] Preferably, a pad is provided at the lower end of the push rod, and a frustum surface that contacts the pad is provided on the top surface of the stirring blade assembly.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention uses the combined motion of "rotation + reciprocating motion" of the stirring mechanism to directly act on the concentrate layer above the reverse osmosis membrane, forming strong turbulence, effectively dispersing impurities and preventing membrane surface clogging. This design fundamentally solves the problems of flux reduction and frequent cleaning caused by clogging in traditional reverse osmosis devices, and can effectively extend the service life of reverse osmosis membrane modules. The layered layout makes the water flow path short and smooth, reduces head loss, increases water production per unit time, and adapts to high-flow-rate water treatment needs.

[0015] (2) The filter assembly, agitation mechanism, and reverse osmosis membrane assembly of this invention are independently installed, with precise positioning, minimal vibration interference during operation, and strong overall stability. The movable shaft is always in close contact with the inner wall of the limiting track under the action of spring two. Even if wear occurs after long-term use, the elasticity of the spring can ensure the movement accuracy. The activated carbon filter assembly intercepts odors, residual chlorine, colloids, and other impurities in advance, greatly reducing the load on the reverse osmosis membrane. Under stable operating conditions, the reverse osmosis membrane efficiently removes harmful substances such as heavy metals, bacteria, and salts, resulting in high purity of produced water. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional internal structure diagram of the housing of the present invention; Figure 3 This is a schematic diagram of the installation of the stirring mechanism of the present invention; Figure 4 This is a schematic diagram of the stirring mechanism of the present invention; Figure 5 This is a side view of the stirring mechanism of the present invention.

[0017] The following are the labels in the diagram: 1. Shell; 2. Filter assembly; 3. Reverse osmosis membrane assembly; 4. Agitator; 401. Mounting shaft; 402. Cylinder; 403. Limiting track; 404. Movable shaft; 405. Mounting bracket; 406. Agitator blade assembly; 407. Spring 1; 408. Push rod; 409. Mounting cylinder; 410. Spring 2; 411. Slider; 412. Connecting plate; 413. Mounting rod; 5. Fixing rod; 6. Limiting ring; 7. Cover; 8. Motor; 9. Inlet pipe; 10. Outlet pipe. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Example: Please see Figure 1-5 A high-efficiency reverse osmosis water treatment device includes a housing 1, within which a filter assembly 2 is installed. The filter assembly 2 is an activated carbon filter that pre-treats the water. Below the filter assembly 3, a reverse osmosis membrane assembly 3 is installed. Under the working pressure provided by a high-pressure pump, water molecules in the raw water permeate from one side of the reverse osmosis membrane assembly 3 to the product water side, while various impurities are retained on the concentrate side, achieving precise separation of water and impurities. A cavity is formed between the filter assembly 2 and the reverse osmosis membrane assembly 3, and an agitation mechanism 4 is installed in the cavity. The agitation mechanism 4 agitates the water flow at the top of the reverse osmosis membrane assembly 3, i.e., the concentrate side, specifically preventing the deposition of impurities on the membrane surface and avoiding clogging of the reverse osmosis membrane.

[0020] The stirring mechanism 4 includes a mounting shaft 401 with a drive mechanism at its upper end. A cylinder 402 is sleeved on the mounting shaft 401, and a limiting track 403 is provided on the cylinder 402. The limiting track 403 includes two vertical parts and two connecting parts arranged opposite each other. The connecting parts are inclined, and one end of the connecting part is connected to the upper end of one of the vertical parts, while the other end of the connecting part is connected to the lower end of the other vertical part. The two vertical parts and the two connecting parts constitute a limiting track 403, which guides the movable shaft 404 to make regular vertical reciprocating motion. The smooth transition design of the inclined section avoids jamming or impact when the movable shaft changes direction, reducing noise and wear.

[0021] Both sides of the limiting track 403 are slidably fitted with movable shafts 404. A mounting bracket 405 is provided on one side of the movable shaft 404, allowing the movable shaft 404 to slide along the mounting bracket 405 in the vertical direction. A push rod 408 is connected to the side of the movable shaft 404, and the push rod 408 contacts the top surface of the stirring blade assembly 406. When the mounting shaft 401 rotates under the action of the drive mechanism, it drives the cylinder 402 to rotate. The mounting bracket 405 is connected to the fixed rod 5. When the cylinder 402 rotates, the movable shaft 404 slides along the limiting track 403. Since the position of the mounting bracket 405 is fixed, the movable shaft 404 moves back and forth in the vertical direction while engaging with the limiting track 403 and under the limiting action of the mounting bracket 405. During the vertical movement, the movable shaft 404 drives the push rod 408 to move back and forth vertically.

[0022] A stirring blade assembly 406 is fitted onto the lower end of the mounting shaft 401. A spring 407 is installed at the bottom of the stirring blade assembly 406. The lower end of the spring 407 is connected to a boss on the mounting shaft 401, and the upper end of the spring 407 is connected to the bottom surface of the stirring blade assembly 406. When the push rod 408 moves vertically back and forth, it pushes the stirring blade assembly 406 to move vertically. When the stirring blade assembly 406 moves downward, it compresses the spring 407. When the push rod 408 moves upward, the spring 407 pushes the stirring blade assembly 406 upward under the action of restoring elasticity. The stirring blade assembly 406 also rotates with the mounting shaft 401 during its vertical back and forth movement. Through the rotation of the mounting shaft 401 and its up-and-down back and forth movement, the water on the concentrate side is rapidly agitated. Under the combined motion of "rotation + up-and-down back and forth", the stirring blade assembly 406 can form strong turbulence on the membrane surface, which can not only prevent impurity deposition, but also accelerate the discharge speed of impurities on the concentrate side, further improving the membrane flux and lifespan.

[0023] In this application, a mounting cylinder 409 is sleeved on the movable shaft 404, and a second spring 410 is installed inside the mounting cylinder 409. The end of the second spring 410 is connected to the movable shaft 404, and the movable shaft 404 and the mounting cylinder 409 are in sliding engagement. Through the setting of the second spring 410, the second spring 410's thrust ensures that the movable shaft 404 is always in contact with the limiting rail 403. Even if wear occurs after long-term use, the elastic compensation of the second spring 410 can ensure the motion accuracy. In addition to ensuring the contact between the movable shaft 404 and the limiting rail 403, the second spring 410 also provides elastic buffering when the movable shaft 404 reverses direction, reducing hard collisions between metal parts and reducing operating noise.

[0024] In this application, a slider 411 is provided on one side of the mounting cylinder 409, a push rod 408 is installed at the bottom of the slider 411, a groove is provided on the mounting bracket 405, and the end of the slider 411 extends into the groove and slides in cooperation with the groove. The movement trajectory of the slider 411 is restricted by the setting of the groove.

[0025] In one possible embodiment, the sliding grooves of the slider 411 and the mounting bracket 405 are made of wear-resistant engineering plastic material, which has low sliding resistance and no jamming. This ensures that the movable shaft 404 moves only in the vertical direction, avoiding horizontal deviation that would cause the push rod 408 to have an eccentric contact with the stirring blade assembly 406, preventing the stirring blade assembly from wearing out or deforming, and extending its service life.

[0026] In this application, the upper ends of the two mounting brackets 405 are provided with connecting plates 412. The connecting plates 412 are rotatably connected to the mounting shaft 401, so that the connecting plates 412 will not rotate with the mounting shaft 401. The outer side of the connecting plates 412 is provided with mounting rods 413. The inner wall of the housing 1 is provided with two fixing rods 5. The end of the mounting rod 413 is connected to the fixing rod 5. The fixing rod 5 is slidably engaged with the vertical groove of the inner wall of the housing 1, so as to facilitate the removal of the fixing rod 5 when disassembling. The mounting brackets 405 are fixed in position by connecting the mounting rods 413 and the fixing rods 5.

[0027] The connecting plate 412 rigidly connects the two mounting brackets 405, which not only prevents the individual mounting bracket 405 from shifting under force, but also disperses the vibration load during the operation of the agitation mechanism 4, reducing the impact on the inner wall of the housing 1. The connection between the mounting rod 413 and the fixing rod 5 allows the entire agitation mechanism 4 to be pulled upwards as a whole without disassembling internal components, greatly shortening the replacement and maintenance time of the reverse osmosis membrane module 3.

[0028] In this application, two limiting rings 6 are also provided inside the shell 1. The two limiting rings 6 are located on the top and bottom of the reverse osmosis membrane module 3, respectively. The position of the reverse osmosis membrane module 3 is fixed by the limiting rings 6 to ensure that the membrane module remains centered and does not shift under high pressure water flow and agitation impact, thus ensuring uniform filtration effect. The vertically installed columnar structure maximizes the use of the inner diameter space of the shell, resulting in a large effective membrane area and high water production efficiency.

[0029] Among them, the two limiting rings 6 not only position the reverse osmosis membrane module 3, but their tight fit with the inner wall of the shell 1 can also reduce water flow bypass and ensure that all influent water passes through the reverse osmosis membrane for filtration. At the same time, the supporting structure of the limiting rings can disperse the axial stress of the membrane module under high pressure, prevent the membrane element from deforming due to pressure, and further improve the operational stability of the membrane module.

[0030] In this application, a cover 7 is provided on the top of the housing 1, and a motor 8 is provided on the cover 7. The output shaft of the motor 8 is connected to the mounting shaft 401.

[0031] In this application, the cover 7 is provided with an inlet pipe 9, and the bottom of the shell 1 is provided with an outlet pipe 10. The water to be treated enters the shell 1 through the inlet pipe 9, passes through the filter assembly 2 and the reverse osmosis membrane assembly 3 in sequence, and then flows out through the outlet pipe 10.

[0032] In this application, a pad is provided at the lower end of the push rod 408, and a frustum surface that contacts the pad is provided on the top surface of the stirring blade assembly 406. By providing the pad, the contact area between the push rod 408 and the stirring blade assembly 406 is increased when the push rod 408 moves, so that the thrust is transmitted evenly and the stirring blades are avoided from bending or breaking due to local stress concentration.

[0033] In one possible embodiment, an annular groove is formed on the frustum surface at the top of the stirring blade assembly 406, and a pad extends into the annular groove and slides into the annular groove, which can realize the connection between the push rod 408 and the stirring blade assembly 406, and the position of the push rod 408 will not be affected when the stirring blade assembly 406 rotates.

[0034] In this application, the combined motion of the agitator 4 enables rapid discharge of impurities from the concentrate side, slows down the formation rate of the fouling layer on the membrane surface, and reduces the operating pressure of the high-pressure pump by 10%-15%, significantly reducing energy consumption over long-term operation. Furthermore, the compact layered layout shortens the water flow path and reduces head loss by 8%-12%, further improving the energy efficiency of the device. For raw water with high suspended solids and high colloid content, the combined "rotation + reciprocating" agitation of the agitator effectively disperses pollutant aggregation, preventing the formation of a dense fouling layer. This allows the device to operate stably even in highly polluted water, eliminating the need for frequent chemical cleaning and reducing chemical reagent consumption by more than 30%.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency reverse osmosis water treatment device, comprising a housing (1), characterized in that: A filter assembly (2) is provided inside the housing (1), and a reverse osmosis membrane assembly (3) is provided below. A cavity is formed between the filter assembly (2) and the reverse osmosis membrane assembly (3), and an agitation mechanism (4) is provided inside the cavity. The stirring mechanism (4) includes a mounting shaft (401), the upper end of which is connected to a driving mechanism. A cylinder (402) is sleeved on the mounting shaft (401), and a limiting track (403) is provided on the cylinder (402). The limiting track (403) includes two vertical parts and two connecting parts arranged opposite to each other. The connecting parts are inclined, and one end of the connecting part is connected to the upper end of one of the vertical parts, and the other end is connected to the lower end of the other vertical part. Both sides of the limiting track (403) are slidably fitted with movable shafts (404), and a mounting bracket (405) is provided on one side of the movable shaft (404). The movable shaft (404) can slide along the mounting bracket (405) in the vertical direction. A push rod (408) is connected to the side of the movable shaft (404), and the push rod (408) contacts the top surface of the stirring blade assembly (406). The lower end of the mounting shaft (401) is fitted with a stirring blade assembly (406), and a spring (407) is provided at the bottom of the stirring blade assembly (406). The lower end of the spring (407) is connected to the boss on the mounting shaft (401), and the upper end of the spring (407) is connected to the bottom surface of the stirring blade assembly (406).

2. The high-efficiency reverse osmosis water treatment device according to claim 1, characterized in that: An installation cylinder (409) is sleeved on the movable shaft (404), and a second spring (410) is provided inside the installation cylinder (409). The end of the second spring (410) is connected to the movable shaft (404), and the movable shaft (404) and the installation cylinder (409) slide in cooperation.

3. The high-efficiency reverse osmosis water treatment device according to claim 2, characterized in that: A slider (411) is provided on one side of the mounting cylinder (409), and a sliding groove is provided on the mounting bracket (405). The end of the slider (411) extends into the sliding groove and slides in cooperation with the sliding groove.

4. The high-efficiency reverse osmosis water treatment device according to claim 1, characterized in that: The two mounting brackets (405) are provided with connecting plates (412) at their upper ends. The connecting plates (412) are rotatably connected to the mounting shaft (401). The outer side of the connecting plates (412) is provided with mounting rods (413). The inner wall of the housing (1) is provided with two fixing rods (5). The end of the mounting rods (413) is connected to the fixing rods (5).

5. The high-efficiency reverse osmosis water treatment device according to claim 4, characterized in that: The housing (1) is also provided with two limiting rings (6), which are located on the top and bottom of the reverse osmosis membrane module (3), respectively.

6. The high-efficiency reverse osmosis water treatment device according to claim 1, characterized in that: The housing (1) is provided with a cover (7) on top, and the driving mechanism is a motor (8) and is installed on the cover (7). The output shaft of the motor (8) is connected to the mounting shaft (401).

7. The high-efficiency reverse osmosis water treatment device according to claim 6, characterized in that: The cover (7) is provided with a water inlet pipe (9), and the bottom of the shell (1) is provided with a water outlet pipe (10).

8. The high-efficiency reverse osmosis water treatment device according to claim 1, characterized in that: The push rod (408) has a pad at its lower end, and the top surface of the stirring blade assembly (406) has a frustum that contacts the pad.

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