A reverse osmosis membrane sewage treatment device

Abstract

The invention relates to the field of sewage treatment, in particular to a reverse osmosis membrane sewage treatment device, which solves the problem that the existing structure is relatively complicated and inconvenient to work and disassemble and repair at the same time. The invention comprises a fixed bracket, on which a driving mechanism is arranged, the driving mechanism is connected with a rotating rod, the rotating rod is fixedly connected with a driving gear, the driving gear is rotatably connected with a turntable, a first limiter is arranged between the driving gear and the turntable, when the first limiter is working, the driving gear and the turntable are relatively fixed, the driving mechanism drives the rotating rod, the driving gear and the turntable to rotate in turn, and two groups of reverse osmosis membrane installation components are arranged on the turntable; the invention only needs to control the driving mechanism to drive the rotating rod to rotate in different directions, so as to control one of the reverse osmosis membrane installation components to be connected with a water outlet pipe and open a movable valve, and at the same time, the other reverse osmosis membrane installation component is away from the water outlet pipe and the movable valve is closed, so that one of the reverse osmosis membrane installation components is used for work.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a reverse osmosis membrane sewage treatment device. Background Art

[0002] The principle of reverse osmosis technology is to separate substances and water under the action of a semi-permeable membrane that is higher than the osmotic pressure of the solution, based on the fact that other substances cannot pass through the semi-permeable membrane. The pore size of the reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in the water. The system has the advantages of good water quality, low energy consumption, no pollution, simple process, and easy operation. When in use, the reverse osmosis membrane is usually installed in a sealed container tube for installation and use.

[0003] In order to facilitate the maintenance and replacement of the reverse osmosis membrane in the equipment according to the specific use environment, after searching, the announcement number CN206457284U discloses a seawater desalination equipment without stopping to replace the reverse osmosis membrane, including a frame, an electric control box, a water inlet pump, a filtration system, a high-pressure pump, a water inlet valve and a reverse osmosis membrane group. The frame is a vertical rectangular accommodating cavity, the electric control box is installed in the upper left corner of the front, the high-pressure pump is installed on the left side of the bottom, the water inlet valve supplies water to the filtration system for filtration, the filtered seawater is connected to the high-pressure pump through the water inlet valve, the high-pressure pump is connected to the reverse osmosis membrane group, the water inlet valve includes a first water inlet valve and a second water inlet valve, and the reverse osmosis membrane group includes a first reverse osmosis membrane group and a second reverse osmosis membrane group.

[0004] The device is provided with two groups of water inlet valves and reverse osmosis membrane groups, so the reverse osmosis membrane group can be repaired or replaced without stopping the device, and has a simple structure and low cost. However, in actual use, it is necessary to close the first water inlet valve or the second water inlet valve, replace the first reverse osmosis membrane group or the second reverse osmosis membrane group, and control the operation of the corresponding high-pressure pump, so the overall structure is relatively complicated; and the two parts of the reverse osmosis membrane group are fixed to the frame position. When the device needs to be disassembled for maintenance, it is inconvenient to operate and disassemble the device for maintenance at the same time.

[0005] Therefore, the present invention provides a reverse osmosis membrane sewage treatment device to solve the above-mentioned problems of complex structure and inconvenience in simultaneous operation and disassembly and maintenance. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a reverse osmosis membrane sewage treatment device to solve the above-mentioned problems of complex structure and inconvenience in simultaneous operation and disassembly and maintenance.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A reverse osmosis membrane sewage treatment device, comprising a fixed bracket, a driving mechanism is arranged on the fixed bracket, the driving mechanism is connected with a rotating rod, the rotating rod is fixedly connected with a driving gear, the driving gear is rotatably connected with a turntable, a first limiter is arranged between the driving gear and the turntable, when the first limiter is working, the driving gear and the turntable are relatively fixed, the driving mechanism drives the rotating rod, the driving gear and the turntable to rotate in sequence, and two sets of reverse osmosis membrane installation components are arranged on the turntable;

[0009] The reverse osmosis membrane installation assembly includes a driven gear rotatably arranged on a turntable and meshingly connected with a driving gear, the driven gear is a ring gear, a through hole is opened on the turntable at a position corresponding to the driven gear, an internal thread is arranged on the inner side of the driven gear, and the internal threads of the two driven gears have opposite thread directions, and also includes a reverse osmosis membrane installation shell, the circumferential side of the reverse osmosis membrane installation shell is provided with an external thread adapted to the internal thread, and is threadedly connected with the driven gear and passes through the through hole on the turntable, the turntable is provided with a second limiter for limiting the movement direction of the two reverse osmosis membrane installation shells, and also includes a third limiter, the third limiter is used to limit the maximum angle of the turntable during forward and reverse rotation, when the turntable rotates forward and reverse to the maximum angle, the first limiter does not work, the turntable does not rotate, and the driving mechanism drives the rotating rod, the driving gear, and the driven gear to rotate in sequence, driving the two reverse osmosis membrane installation shells to move in opposite directions;

[0010] An inlet head and an outlet head are respectively provided at both ends of the reverse osmosis membrane installation shell, a water inlet pipe adapted to the water inlet head is provided on the rotating rod, a movable valve is provided between the water inlet head and the water inlet pipe, and a water outlet pipe adapted to the water outlet head is provided on the fixed bracket. When the turntable rotates forward and reverse to the maximum angle, the two reverse osmosis membrane installation shells are driven to move in opposite directions through the driving mechanism, the water inlet head of one reverse osmosis membrane installation shell is away from the water inlet pipe, the movable valve is opened, the water outlet head is close to the water outlet pipe and connected to the water outlet pipe, the water inlet head of the other reverse osmosis membrane installation shell is close to the water inlet pipe, the movable valve is closed, and the water outlet head is away from the water outlet pipe.

[0011] Preferably, the first limiting member is an elastic telescopic rod, including a sleeve A fixedly connected to the turntable and a sleeve B sleeved with the sleeve A, a spring is provided between the sleeve B and the sleeve A, and a plurality of first limiting members are provided.

[0012] Preferably, the second limiting member is arranged on one side of the turntable and comprises two ring bodies, and the reverse osmosis membrane mounting shell is slidably arranged in the corresponding ring bodies.

[0013] Preferably, the third limiting member includes two top plates symmetrically arranged on the periphery of the turntable and a baffle plate slidably arranged on a fixed bracket. The rotation of the turntable drives the top plates to rotate. When the top plates push the baffle plates to move to the maximum position, the turntable rotates to a maximum angle.

[0014] Preferably, the movable valve includes a water pipe A arranged in the water inlet pipe, a water connecting head connected to the water pipe A is provided at the end of the water inlet pipe away from the water inlet head, a water pipe B is provided at the end of the water inlet head facing the water inlet pipe, an elastic sealing layer is provided between the water pipe B and the water inlet pipe, and a sealing piece adapted to the water pipe A is provided at the end of the water pipe B close to the water pipe A.

[0015] Preferably, the elastic sealing layer and the plugging member are both made of elastic rubber, and the diameter of the plugging member is larger than the water pipe A.

[0016] Preferably, the water inlet head is threadedly and sealedly connected to the reverse osmosis membrane mounting shell and the water pipe B.

[0017] Preferably, a connecting piece is rotatably provided on the rotating rod, and is connected to the water inlet pipe via the connecting piece.

[0018] Preferably, the fixed bracket is in a "C" shape, and is provided with a plurality of fixing holes. The driving mechanism is a motor, which is arranged on the top of the fixed bracket. The rotating rod is arranged downward, and the driving gear is rotatably connected to the turntable through a rotating shaft on the side away from the rotating rod.

[0019] Preferably, the first limit member is an electric telescopic rod fixedly arranged on the turntable, and a fixing groove is provided at the corresponding position of the driving gear and the electric telescopic rod. The fixing groove is slightly larger than the end of the electric telescopic rod, and pressure sensors are respectively provided on both sides of the baffle. The pressure sensor and the electric telescopic rod are electrically connected to a controller.

[0020] The beneficial effects of the present invention are:

[0021] 1. When the present invention is used, the water inlet ends of the two water inlet pipes are connected to the water adding and pressurizing equipment. It is only necessary to control the driving mechanism to drive the rotating rod to rotate in different directions, so that one of the reverse osmosis membrane installation components can be controlled to be connected to the water outlet pipe and the movable valve can be opened. At the same time, the other reverse osmosis membrane installation component is away from the water outlet pipe and the movable valve is closed, so that one of the reverse osmosis membrane installation components can be used to work. The present invention has a simple structure and is easy to operate.

[0022] 2. In the present invention, when one of the reverse osmosis membrane installation components is working, the other reverse osmosis membrane installation component that is not working is moved to one side of the entire device, so that the unused reverse osmosis membrane can be taken out for disassembly, cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the first limiter and the rotating disk in the first embodiment of the present invention;

[0025] Figure 3This is a schematic diagram of the specific structure of the first position-limiting member in Embodiment 1 of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the internal thread on the driven gear in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the movable valve in the present invention;

[0028] Figure 6 for Figure 1 Schematic diagram after the middle turntable rotates 180° clockwise;

[0029] Figure 7 It is a schematic diagram of the rotation of the connecting member in the present invention.

[0030] Figure 8 It is a schematic diagram of the overall structure of two examples of implementation in the present invention.

[0031] In the figure: 1. water connection head, 2. water inlet pipe, 201. water pipe A, 3. connecting piece, 4. water pipe B, 401. plugging piece, 402. connecting piece, 5. water inlet head, 6. reverse osmosis membrane mounting shell, 7. external thread, 8. top plate, 9. driven gear, 10. bearing, 11. water outlet head, 12. fixed bracket, 13. water outlet pipe, 14. second limiter, 15. straight slide groove, 16. baffle, 17. turntable, 18. driving gear, 19. rotating rod, 20. driving mechanism, 21. rotating shaft, 22. first limiter, 221. sleeve B, 222. spring, 223. sleeve A, 23. annular slide groove, 24. pressure sensor. DETAILED DESCRIPTION

[0032] The following will refer to the attached Figures 1 to 7 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0033] Example 1

[0034] A reverse osmosis membrane sewage treatment device, such as the attached Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, it includes a fixed bracket 12, on which a driving mechanism 20 is provided, and the driving mechanism 20 is connected to a rotating rod 19. The rotating rod 19 can be controlled to rotate by the driving mechanism 20, and the rotating rod 19 is fixedly connected to a driving gear 18, which is coaxial with the rotating rod 19. The driving gear 18 is rotatably connected to a turntable 17, which is coaxial with the driving gear 18. A first limiting member 22 is provided between the driving gear 18 and the turntable 17. When the first limiting member 22 is working, the driving gear 18 is relatively fixed to the turntable 17, and the driving mechanism 20 drives the rotating rod 19, the driving gear 18, and the turntable 17 to rotate in sequence. When the first limiting member 22 is not working, the driving gear 18 and the turntable 17 can rotate relatively, and two sets of reverse osmosis membrane mounting components are provided on the turntable 17.

[0035] The reverse osmosis membrane installation assembly includes a driven gear 9 rotatably set on a turntable 17 and meshingly connected to a driving gear 18. In this embodiment, a bearing 10 is provided on the turntable 17, and the driven gear 9 is connected through the bearing 10. The driven gear 9 is a ring gear. A through hole is opened on the turntable 17 at a position corresponding to the driven gear 9. An internal thread is provided on the inner side of the driven gear 9, and the internal threads of the two driven gears 9 have opposite thread directions.

[0036] It also includes a reverse osmosis membrane installation shell 6, which has an external thread 7 that matches the internal thread on its circumferential side and is threadedly connected to a driven gear 9, passing through a through hole on a turntable 17. A second stopper 14 is provided on the turntable 17 for limiting the movement direction of the two reverse osmosis membrane installation shells 6. When the driving gear 18 and the two driven gears 9 move relative to each other, the two driven gears 9 rotate in the same direction, driving the two reverse osmosis membrane installation shells 6 to move in opposite directions.

[0037] A third limiter is also included, and the third limiter is used to limit the maximum angle of the turntable 17 when it rotates forward and reversely. When the turntable 17 rotates forward and reversely to the maximum angle, the first limiter 22 does not work, the turntable 17 does not rotate, and the driving mechanism 20 drives the rotating rod 19, the driving gear 18, and the driven gear 9 to rotate in sequence, driving the two reverse osmosis membrane mounting shells 6 to move in opposite directions.

[0038] An inlet head 5 and an outlet head 11 are respectively provided at both ends of the reverse osmosis membrane installation shell 6, an inlet pipe 2 matched with the inlet head 5 is provided on the rotating rod 19, a movable valve is provided between the inlet head 5 and the inlet pipe 2, and an outlet pipe 13 matched with the outlet head 11 is provided on the fixed bracket 12. When the turntable 17 rotates forward and reverse to the maximum angle, the two reverse osmosis membrane installation shells 6 are driven to move in opposite directions through the driving mechanism 20, the inlet head 5 of one reverse osmosis membrane installation shell 6 is away from the inlet pipe 2, the movable valve is opened, the outlet head 11 is close to the outlet pipe 13 and connected to the outlet pipe 13, and rubber sealing rings can be provided on the outlet head 11 and the outlet pipe 13 to achieve a sealed connection, the inlet head 5 of the other reverse osmosis membrane installation shell 6 is close to the inlet pipe 2, the movable valve is closed, and the outlet head 11 is away from the outlet pipe 13.

[0039] Working principle: when the turntable 17 has not rotated to the maximum angle, the first limiting member 22 works to fix the driving gear 18 relatively to the turntable 17, and the rotating rod 19 is driven to rotate by the driving mechanism 20, and the rotating rod 19 drives the driving gear 18 to rotate, and the turntable 17 rotates at the same time. Due to the rotation of the turntable 17, the driving gear 18 and the driven gear 9 do not move relative to each other, and the two reverse osmosis membrane installation shells 6 do not move relative to each other. Under the action of the third limiting member, when the turntable 17 rotates to the maximum angle in one direction, the turntable 17 cannot continue to rotate, and the first limiting member 22 does not work at this time. One of the reverse osmosis membrane installation shells 6 corresponds to the water outlet pipe 13, and the driving mechanism 20 continues to drive the rotating rod 19 to rotate, and the driving gear 18 moves relative to the turntable 17 and moves relative to the driven gear 9, driving the two driven gears 9 to rotate. Under the action of the two driven gears 9, the two reverse osmosis membrane installation shells 6 are driven to move in the opposite direction, and the water outlet head 11 of one of the reverse osmosis membrane installation shells 6 is The water outlet pipe 13 is connected, and the movable valve between the water inlet head 5 and the water inlet pipe 2 is opened, and reverse osmosis filtration can be performed. The water outlet head 11 of the other reverse osmosis membrane installation shell 6 is away from the water outlet pipe 13, and the movable valve between the water inlet head 5 and the water inlet pipe 2 is closed, and maintenance and other operations can be performed; when it is necessary to replace the two reverse osmosis membrane installation shells 6, the driving mechanism 20 drives the rotating rod 19 to rotate in the opposite direction. At this time, the first limit member 22 works, driving the driving gear 18 and the turntable 17 to rotate in the opposite direction to the maximum angle, and the water outlet head 11 of the other reverse osmosis membrane installation shell 6 corresponds to the water outlet pipe 13. As the rotating rod 19 continues to rotate in the opposite direction, the water outlet head 11 of the other reverse osmosis membrane installation shell 6 is driven to be connected to the water outlet pipe 13, and the movable valve between the water inlet head 5 and the water inlet pipe 2 is opened, and reverse osmosis filtration is performed. The water outlet head 11 of the original reverse osmosis membrane installation shell 6 is away from the water outlet pipe 13, and the movable valve between the water inlet head 5 and the water inlet pipe 2 is closed, thereby realizing the replacement of the two reverse osmosis membrane installation shells 6.

[0040] When the present invention is used in practice, reverse osmosis membranes are placed in two reverse osmosis membrane installation shells 6, and the device can be fixed on the entire sewage treatment device through a fixing bracket 12. Two branches are set on the pressurized water adding equipment, and the two branches are respectively connected to the water inlet ends of the two reverse osmosis membrane installation shells 6, and the next-level filtering device or water outlet equipment is connected to the water outlet pipe 13, so that after the adjustment is completed, the sewage can be controlled to be filtered through the pressurized water adding equipment and one of the reverse osmosis membranes.

[0041] It should also be noted that, in the present invention, since the turntable 17 moves between forward and reverse rotations, the connected branches will not be entangled.

[0042] During use of the present invention, reverse osmosis membranes of different specifications can be placed, so that different reverse osmosis membranes can be selected for use according to actual needs. Reverse osmosis membranes of the same specifications can also be placed. When one of the reverse osmosis membranes is damaged, another reverse osmosis membrane can be replaced in time, and the damaged reverse osmosis membrane can be repaired at the same time without affecting the sewage treatment process. In the present invention, the position of the reverse osmosis membrane installation shell 6 can be adjusted to facilitate the removal of unused reverse osmosis membranes for disassembly, cleaning and repair.

[0043] As attached Figure 2 , Figure 3 As shown, the first limiting member 22 is an elastic telescopic rod, including a sleeve A223 fixedly connected to the turntable 17 and a sleeve B221 sleeved with the sleeve A223, a spring 222 is provided between the sleeve B221 and the sleeve A223, and the first limiting member 22 is provided with multiple sleeves, so that the sleeve B221 generates pressure on the driving gear 18. Furthermore, an anti-slip layer, such as rubber, can also be provided at one end of the sleeve B221 close to the driving gear 18 to increase friction.

[0044] Working principle: When the turntable 17 has not rotated to the maximum angle and can rotate in one direction, the driving gear 18 is subjected to the pressure and friction force of the end of the sleeve B221, and the turntable 17 will rotate together with the driving gear 18. When the turntable 17 rotates to the maximum angle, the turntable 17 cannot continue to rotate. When the driving gear 18 continues to rotate, the driving gear 18 will overcome the pressure and friction force and continue to rotate, thereby realizing the limiting effect of the first limit member 22 in different states.

[0045] It should be noted that, in this embodiment, the first limiting member 22 adopts elastic limiting, so the limiting effect is limited and it is only suitable for use in some relatively small sewage treatment equipment.

[0046] As attached Figure 1As shown, in this embodiment, the second limit member 14 is arranged on one side of the turntable 17, including two ring bodies, and the reverse osmosis membrane mounting shell 6 is slidably arranged in the corresponding ring body. The reverse osmosis membrane mounting shell 6 only slides in the ring body and does not rotate. Therefore, when the turntable 17 does not rotate and the driving gear 18 drives the driven gear 9 to rotate, the reverse osmosis membrane mounting shell 6 is controlled to slide in the ring body.

[0047] As attached Figure 1 , Figure 6 As shown, in this embodiment, the turntable 17 is disc-shaped, and the two reverse osmosis membrane installation assemblies are symmetrically arranged. The third limit member includes two top plates 8 symmetrically arranged on the sides of the turntable 17 and a baffle 16 slidably arranged on the fixed bracket 12. Specifically, a straight slide groove 15 is provided on the fixed bracket 12, and the baffle 16 is slidably arranged in the straight slide groove 15. The rotation of the turntable 17 drives the top plate 8 to rotate. When the top plate 8 pushes the baffle 16 to move to the maximum position, the turntable 17 rotates to the maximum angle, that is, each time the turntable 17 is adjusted, the turntable 17 rotates 180°.

[0048] As attached Figure 5 As shown, the movable valve in this embodiment includes a water passing pipe A201 arranged in the water inlet pipe 2, and the water inlet pipe 2 is provided with a water connecting head 1 connected with the water passing pipe A201 at one end away from the water inlet head 5, and the water connecting head 1 is used to connect with the water adding and pressurizing equipment, and the water inlet head 5 is provided with a water passing pipe B4 at one end facing the water inlet pipe 2, and an elastic sealing layer (not shown in the figure) is provided between the water passing pipe B4 and the water inlet pipe 2, and a blocking piece 401 adapted to the water passing pipe A201 is provided at one end of the water passing pipe B4 close to the water passing pipe A201. Specifically, the elastic sealing layer and the blocking piece 401 are both made of elastic rubber, the diameter of the blocking piece 401 is larger than that of the water passing pipe A201, and the blocking piece 401 is connected to the port of the water passing pipe B4 via a connecting piece 402.

[0049] Working principle: when the blocking piece 401 is close to the water pipe A201, the blocking piece 401 contacts and squeezes the port of the water pipe A201, thereby closing the port of the water pipe A201 and closing the valve; when the blocking piece 401 is away from the water pipe A201, the port of the water pipe A201 is opened; since an elastic sealing layer is provided between the surrounding side of the water pipe B4 and the water inlet pipe 2, water discharged from the port of the water pipe A201 can only pass through the port of the water pipe B4 and the gap near the blocking piece 401 into the water pipe B4, thereby opening the valve.

[0050] As attached Figure 1 , Figure 7As shown, the water inlet head 5 is threadedly sealed and connected with the reverse osmosis membrane mounting shell 6 and the water pipe B4, and a connecting piece 3 is rotatably provided on the rotating rod 19. Specifically, an annular groove 23 is provided on the rotating rod 19, and the connecting piece 3 is slidably set in the annular groove 23, and is connected with the water inlet pipe 2 through the connecting piece 3. The sealed connection and detachment between the water pipe B4 and the reverse osmosis membrane mounting shell 6 can be achieved by rotating the water inlet head 5. When sealed, it is used for normal use. After detachment, the entire part located at the connecting piece 3 can be rotated to leave enough space for the port of the reverse osmosis membrane mounting shell 6, thereby replacing the reverse osmosis membrane in the reverse osmosis membrane mounting shell 6.

[0051] As attached Figure 1 , Figure 2 As shown, in this embodiment, the fixed bracket 12 is in a "C" shape, and a plurality of fixing holes for fixed connection are provided on the fixed bracket 12. The driving mechanism 20 is a motor, which is arranged on the top of the fixed bracket 12. The rotating rod 19 is arranged downward, and the driving gear 18 is rotatably connected to the turntable 17 through the rotating shaft 21 on the side away from the rotating rod 19. The unused reverse osmosis membrane installation assembly is on the open side of the bracket, which is convenient for repairing and replacing the unused reverse osmosis membrane installation assembly.

[0052] Example 2

[0053] As attached Figure 8 As shown, the difference between this embodiment and embodiment 1 is that the first limit member 22 is an electric telescopic rod fixedly arranged on the turntable 17, and a fixing groove is provided at the corresponding position of the driving gear 18 and the electric telescopic rod. The fixing groove is slightly larger than the end of the electric telescopic rod so that the electric telescopic rod can be smoothly inserted into the fixing groove. In this embodiment, there are two symmetrically arranged fixing grooves, and pressure sensors 24 are respectively provided on both sides of the baffle 16. The pressure sensor 24 and the electric telescopic rod are electrically connected to a controller, and the electric telescopic rod is controlled to retract by the pressure received by the pressure sensor 24. When the turntable 17 is not rotated to the maximum angle, the pressure sensor 24 is not subjected to pressure. When the electric telescopic rod is extended and inserted into the fixing groove, the driving gear 18 is relatively fixed to the turntable 17. When the turntable 17 is rotated to the maximum angle, the top plate 8 generates pressure on the pressure sensor 24, the electric telescopic rod contracts, and the driving gear 18 can rotate relative to the turntable 17.

[0054] In this embodiment, the driving gear 18 and the turntable 17 are fixed by an electric telescopic rod and a fixing groove. Compared with elastic limiting, it can play a role of complete fixation and greater stability. It can be applied to large-scale sewage treatment equipment. Moreover, since elastic loss is not adopted, elastic fatigue will not occur, which reduces the maintenance of the equipment and can be used for a long time.

[0055] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A reverse osmosis membrane sewage treatment device, characterized in that: The invention comprises a fixed bracket (12), wherein a driving mechanism (20) is provided on the fixed bracket (12), wherein the driving mechanism (20) is connected to a rotating rod (19), wherein the rotating rod (19) is fixedly connected to a driving gear (18), wherein the driving gear (18) is rotatably connected to a rotating disk (17), wherein a first stopper (22) is provided between the driving gear (18) and the rotating disk (17), wherein when the first stopper (22) is in operation, the driving gear (18) and the rotating disk (17) are relatively fixed, and the driving mechanism (20) drives the rotating rod (19), the driving gear (18) and the rotating disk (17) to rotate in sequence, and wherein two sets of reverse osmosis membrane mounting assemblies are provided on the rotating disk (17); The reverse osmosis membrane installation assembly comprises a driven gear (9) rotatably arranged on a turntable (17) and meshingly connected with a driving gear (18), wherein the driven gear (9) is a ring gear, a through hole is opened on the turntable (17) at a position corresponding to the driven gear (9), an internal thread is arranged on the inner side of the driven gear (9), and the internal threads of the two driven gears (9) have opposite thread directions, and also comprises a reverse osmosis membrane installation shell (6), wherein the circumferential side of the reverse osmosis membrane installation shell (6) is provided with an external thread (7) adapted to the internal thread, and is threadedly connected with the driven gear (9), passing through the turntable (17) on the inner side of the driven gear (9). The turntable (17) is provided with a second stopper (14) for limiting the movement direction of the two reverse osmosis membrane installation shells (6), and also includes a third stopper, the third stopper is used to limit the maximum angle of the turntable (17) when rotating forward or reversely. When the turntable (17) rotates forward or reversely to the maximum angle, the first stopper (22) does not work, the turntable (17) does not rotate, and the driving mechanism (20) drives the rotating rod (19), the driving gear (18), and the driven gear (9) to rotate in sequence, thereby driving the two reverse osmosis membrane installation shells (6) to move in opposite directions. A water inlet (5) and a water outlet (11) are respectively provided at both ends of the reverse osmosis membrane installation shell (6); a water inlet pipe (2) adapted to the water inlet head (5) is provided on the rotating rod (19); a movable valve is provided between the water inlet head (5) and the water inlet pipe (2); a water outlet pipe (13) adapted to the water outlet head (11) is provided on the fixed bracket (12); when the rotating disk (17) rotates forward and reverse to a maximum angle, the two reverse osmosis membrane installation shells (6) are driven to move in opposite directions through the driving mechanism (20); the water inlet head (5) of one reverse osmosis membrane installation shell (6) is away from the water inlet pipe (2), the movable valve is opened, the water outlet head (11) is close to the water outlet pipe (13) and connected to the water outlet pipe (13); the water inlet head (5) of the other reverse osmosis membrane installation shell (6) is close to the water inlet pipe (2), the movable valve is closed, and the water outlet head (11) is away from the water outlet pipe (13).

2. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The first limiting member (22) is an elastic telescopic rod, comprising a sleeve A (223) fixedly connected to the rotating disk (17) and a sleeve B (221) sleeved with the sleeve A (223), a spring (222) being arranged between the sleeve B (221) and the sleeve A (223), and a plurality of the first limiting members (22) are provided.

3. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The second stopper (14) is arranged on one side of the rotating disk (17), and comprises two ring bodies, and the reverse osmosis membrane installation shell (6) is slidably arranged in the corresponding ring bodies.

4. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The third position-limiting member comprises two top plates (8) symmetrically arranged on the periphery of the rotating disk (17) and a baffle plate (16) slidably arranged on the fixed bracket (12); the rotating disk (17) rotates to drive the top plates (8) to rotate; when the top plates (8) push the baffle plates (16) to move to a maximum position, the rotating disk (17) rotates to a maximum angle.

5. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The movable valve comprises a water pipe A (201) arranged in a water inlet pipe (2); a water connection head (1) connected to the water pipe A (201) is arranged at one end of the water inlet pipe (2) away from the water inlet head (5); a water pipe B (4) is arranged at one end of the water inlet head (5) facing the water inlet pipe (2); an elastic sealing layer is arranged between the water pipe B (4) and the water inlet pipe (2); and a blocking member (401) adapted to the water pipe A (201) is arranged at one end of the water pipe B (4) close to the water pipe A (201).

6. A reverse osmosis membrane sewage treatment device according to claim 5, characterized in that: The elastic sealing layer and the plugging member (401) are both made of elastic rubber, and the diameter of the plugging member (401) is larger than that of the water pipe A (201).

7. A reverse osmosis membrane sewage treatment device according to claim 5, characterized in that: The water inlet head (5) is threadedly sealedly connected to the reverse osmosis membrane installation shell (6) and the water pipe B (4).

8. A reverse osmosis membrane sewage treatment device according to claim 7, characterized in that: A connecting piece (3) is rotatably provided on the rotating rod (19) and is connected to the water inlet pipe (2) via the connecting piece (3).

9. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The fixed bracket (12) is in a "C" shape, and is provided with a plurality of fixing holes. The driving mechanism (20) is a motor, which is arranged on the top of the fixed bracket (12). The rotating rod (19) is arranged downward, and the driving gear (18) is rotatably connected to the rotating disk (17) via a rotating shaft (21) on a side away from the rotating rod (19).

10. A reverse osmosis membrane sewage treatment device according to claim 1, characterized in that: The first limiter (22) is an electric telescopic rod fixedly arranged on the rotating disk (17); a fixing groove is provided at the position corresponding to the driving gear (18) and the electric telescopic rod; the fixing groove is slightly larger than the end of the electric telescopic rod; pressure sensors (24) are provided on both sides of the baffle (16); and the pressure sensor (24) and the electric telescopic rod are electrically connected to a controller.

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