Reverse osmosis device for sewage treatment

Abstract

The utility model discloses a reverse osmosis device for sewage treatment, and belongs to the technical field of sewage treatment equipment. Comprising a tank body, the bottom end of the tank body is connected with a limiting structure in a clamped mode, when the bottom end of a reverse osmosis membrane is placed in the tank body, the bottom end of the reverse osmosis membrane is limited and positioned by the limiting structure, the top end of a fixing plate of the limiting structure can be attached to the bottom end of the reverse osmosis membrane, and the bottom end of the fixing plate is fixedly connected with an adjusting structure. The angle of the adjusting structure can be changed along with the movement of the limiting structure, the movement stability of the limiting structure and the reverse osmosis membrane is further ensured, when the reverse osmosis tank is converted from a closed state to an open state, the top end of the reverse osmosis membrane is not limited by the water outlet, the limitation on the adjusting structure is reduced, and certain elastic deformation recovery can be performed; the reverse osmosis membrane completely embedded in the inner side of the tank body is pushed upwards by a certain distance, so that a worker can conveniently take the reverse osmosis membrane, and the maintenance difficulty of the worker is reduced.

Description

Technical Field

[0001] This application relates to the technical field of sewage treatment equipment, and more specifically, to a reverse osmosis device for sewage treatment. Background Art

[0002] With the rapid development of social economy, the generation of domestic and industrial wastewater is increasing, and more attention is paid to sewage treatment. Usually, a reverse osmosis device is used to treat sewage. The reverse osmosis device passes raw water through a fine filter, a granular activated carbon filter, a compressed activated carbon filter, etc., and then pressurizes it with a pump. By using a pore size of 1 / 10000μm, the higher-concentration water is turned into lower-concentration water, and at the same time, a large number of impurities such as industrial pollutants, heavy metals, bacteria, and viruses mixed in the water are all isolated, so as to meet the physical and chemical indexes and hygienic standards for drinking, and produce clear and pure water. The reverse osmosis device applies membrane separation technology, which can effectively remove charged ions, inorganic substances, colloidal particles, bacteria, and organic substances in water. It is the best equipment in high-purity water preparation, brackish water desalination, and wastewater treatment processes. However, in existing sewage treatment equipment, the reverse osmosis device for sewage filtration is prone to blockage, and the filtration effect is reduced.

[0003] An existing reverse osmosis device for sewage treatment, such as a reverse osmosis device for sewage treatment equipment proposed in Chinese Patent No. CN210711002U, starts a stirring motor. The motor support frame supports and fixes the stirring motor, so that the stirring shaft drives the stirring frame to rotate, stir the sewage inside the filter box. The shape of the filter plate is barrel-shaped, which can effectively increase the contact area with the sewage. By preliminarily filtering the sewage before osmosis, the service life of the osmosis membrane is improved, and the risk of pipeline blockage is reduced, and the operation is convenient; after the filtered sewage is pressurized, it enters the inside of the osmosis membrane installation box through a connecting pipe. Due to the pressurization of the sewage, reverse osmosis will not occur during the filtration of the osmosis membrane, and the filtration rate is improved. The inside of the filter box can be observed through an observation window.

[0004] In actual sewage treatment, sewage is filtered and purified through a reverse osmosis membrane. However, long-term filtration treatment will cause the reverse osmosis membrane to become blocked and unable to filter normally. When replacing the reverse osmosis membrane, the reverse osmosis membrane needs to be taken out from the inside of the institutional sewage treatment device. The outside of the reverse osmosis membrane used for sewage filtration is contaminated with more pollutants, and the reverse osmosis device itself is relatively high. Users need to reach into the device to take out the reverse osmosis membrane. The disassembly and installation are difficult, and it is also easy to damage the device, greatly increasing the maintenance time of users. In view of this, we propose a reverse osmosis device for sewage treatment. Utility Model Content

[0005] 1. Technical Problems to be Solved

[0006] The purpose of this application is to provide a reverse osmosis device for sewage treatment to solve the problems raised in the above-mentioned background technology.

[0007] 2. Technical solution

[0008] A reverse osmosis device for sewage treatment includes a reverse osmosis tank, a fixing frame, a pipeline, and a water outlet pipe. A pipeline for sewage to enter is provided at the top end of the reverse osmosis tank, and a water outlet pipe for outputting the treated water body is provided at the bottom end of the reverse osmosis tank. The reverse osmosis tank is fixed inside the fixing frame;

[0009] The reverse osmosis tank is composed of a tank cover, a tank body, and a reverse osmosis membrane. The tank cover is located at the top end. The bottom end of the tank cover is fixedly connected to the tank body. The reverse osmosis membrane is snap-fitted inside the tank body. A limiting structure is snap-fitted at the bottom end of the tank body. When the bottom end of the reverse osmosis membrane is placed inside the tank body, the bottom end of the reverse osmosis membrane is restricted and positioned by the limiting structure. The limiting structure includes a fixing plate. The top end of the fixing plate can be attached to the bottom end of the reverse osmosis membrane. The movement of the reverse osmosis membrane can drive the fixing plate to move. The bottom end of the fixing plate is fixedly connected to an adjusting structure, and the adjusting structure can be deformed and adjusted according to different heights of the fixing plate.

[0010] As an optional solution of the technical solution of this application document, a pipeline is fixedly connected to the middle of the top end of the tank cover. A water outlet is sleeved at the bottom end of the pipeline. The bottom end of the water outlet is attached to the top end of the reverse osmosis membrane. A round block is fixedly connected to the outside of the water outlet, and the round block is fixedly arranged at a position on the bottom end of the tank cover close to the tank body.

[0011] As an optional solution of the technical solution of this application document, the limiting structure further includes limiting grooves symmetrically opened on the inner side of the fixing plate. A fixed telescopic rod is fixedly connected to the inner side of the limiting groove. A limiting block is fixedly connected to the top end of the fixed telescopic rod.

[0012] The positions of the symmetrically arranged limiting blocks close to the bottom end of the reverse osmosis membrane are all arc-shaped, and the distance between the two limiting blocks is equal to the size of the bottom end of the reverse osmosis membrane;

[0013] A flexible strip is fixedly arranged on the side of the fixing plate, and the side size of the fixing plate is equal to the size of the water outlet pipe.

[0014] As an optional solution of the technical solution of this application document, the fixed telescopic rod is composed of an outer rod and an inner rod. The inner rod is slidably connected to the inside of the outer rod. The bottom end of the inner rod is fixedly connected to the bottom end of the limiting groove. A limiting plate is fixedly connected to the bottom end of the outside of the outer rod, and a limiting spring is fixedly connected to the top end of the limiting plate.

[0015] As an alternative solution to the technical solution of this application document, the adjustment structure includes a fixed base provided at the bottom end of the fixed plate. A plurality of channels are provided at the top end of the fixed base. A positioning plate is slidably connected inside the plurality of channels. A regulating rod is rotatably connected to the bottom end of the positioning plate. A regulating block is rotatably connected to the bottom end of the regulating rod.

[0016] The regulating block includes an arc-shaped block and a positioning slider. The positioning slider is fixedly connected to the bottom end of the arc-shaped block.

[0017] As an alternative solution to the technical solution of this application document, a chute is provided at the bottom end inside the fixed base. A regulating block is slidably connected inside the chute.

[0018] A stop block is provided in the middle of the chute. The distance between the chute and the stop block is the lateral movement distance when the regulating rod rotates from an inclined position to a vertical position with the regulating block.

[0019] As an alternative solution to the technical solution of this application document, an elastic structure is fixedly connected to the middle of the two regulating rods. The elastic structure includes two fixed blocks. The two fixed blocks are arranged oppositely, and the two fixed blocks are connected by a fixed spring.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the advantages of this application are as follows:

[0022] Through the setting of the limiting structure, when installing a new reverse osmosis membrane, the limiting plate of the limiting structure can limit the bottom side of the reverse osmosis membrane, and the limiting structure has a certain buffering function inside. While ensuring the installation position of the reverse osmosis membrane does not shift during limiting, it avoids damage to the reverse osmosis membrane caused by impact during installation. Through the setting of the adjustment structure, during the process of placing the new reverse osmosis membrane at the bottom end inside the tank, the adjustment structure can change the angle as the limiting structure moves, further ensuring the smooth movement of the limiting structure and the reverse osmosis membrane. When the reverse osmosis tank changes from a closed state to an open state, the top of the reverse osmosis membrane is not restricted by the water outlet, and the restriction on the adjustment structure becomes smaller, enabling a certain elastic deformation recovery. The reverse osmosis membrane completely embedded inside the tank is pushed upward by a certain distance, facilitating workers to take it for handling and reducing the maintenance difficulty for workers. Description of the drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of a reverse osmosis device for sewage treatment;

[0024] Figure 2 It is a schematic side sectional view of a single reverse osmosis tank of a reverse osmosis device for sewage treatment;

[0025] Figure 3Schematic diagram of the connection state of the limit structure and the adjustment structure of a reverse osmosis device for sewage treatment;

[0026] Figure 4 Schematic diagram of the connection structure of a single reverse osmosis tank of a reverse osmosis device for sewage treatment;

[0027] Explanation of the reference numerals in the figure: 1. Reverse osmosis tank; 11. Tank cover; 12. Tank body; 13. Reverse osmosis membrane; 2. Fixed frame; 3. Pipeline; 31. Water outlet; 4. Outlet pipe; 51. Fixed plate; 52. Limit groove; 53. Fixed telescopic rod; 54. Limit block; 55. Limit spring; 56. Limit plate; 61. Fixed base; 62. Positioning plate; 63. Adjusting rod; 64. Adjusting block; 65. Sliding groove; 66. Elastic structure. Detailed implementation method

[0028] Refer to Figures 1-4 , a technical solution proposed.

[0029] As Figure 1 and Figure 4 shown, the reverse osmosis device is composed of multiple reverse osmosis tanks 1. The multiple reverse osmosis tanks 1 are fixed inside the fixed frame 2. A control panel for controlling and detecting the multiple reverse osmosis tanks 1 is arranged on one side of the fixed frame 2. The reverse osmosis tank 1 is composed of a tank cover 11, a tank body 12 and a reverse osmosis membrane 13. The tank cover 11 is located at the top. A pipeline 3 for the entry of raw sewage is arranged in the middle of the tank cover 11. The bottom end of the pipeline 3 penetrates through the fixed circular plate. The bottom end of the pipeline 3 is fixedly connected with a water outlet 31. The water outlet 31 can be attached to the top end of the reverse osmosis membrane 13. Sewage flows out of the water outlet 31 along the pipeline 3 and then all seeps into the reverse osmosis membrane 13. The bottom end of the tank cover 11 is hinged to the tank body 12, and the reverse osmosis membrane 13 for filtering sewage is placed inside the tank body 12.

[0030] As Figure 2 and Figure 3 shown, a limit structure is snap-connected to the bottom end of the reverse osmosis membrane 13. The limit structure includes a fixed plate 51 that fits against the bottom end of the reverse osmosis membrane 13. A plurality of limit grooves 52 are symmetrically opened inside the fixed plate 51. The number of limit grooves 52 can be set to two, three or four, with the main purpose of being evenly symmetrical. A positioning groove is opened at the upper end of the limit groove 52. The size of the positioning groove is equal to the outer size of the fixed telescopic rod 53, which can ensure the stability of the telescopic movement of the fixed telescopic rod 53;

[0031] At the inner bottom end of the limit groove 52, a fixed telescopic rod 53 is fixedly connected. The fixed telescopic rod 53 is composed of an outer rod and an inner rod. The inner rod is slidably connected to the inner side of the outer rod. The bottom end of the inner rod is fixedly connected to the bottom end of the limit groove 52. At the outer bottom end of the outer rod, a limit plate 56 is fixedly connected. At the top of the limit groove 52, a long groove is provided. The size of the long groove is larger than that of the limit groove 52. A rubber strip is fixedly arranged on the side of the limit plate 56. When the limit plate 56 moves to the top of the limit groove 52, the rubber strip on the side of the limit plate 56 is engaged in the long groove. At this time, the extension length of the fixed telescopic rod 53 reaches the maximum value. At the top of the limit plate 56, a limit spring 55 is fixedly connected.

[0032] At the top end of the fixed telescopic rod 53, a limit block 54 is fixedly connected. A plurality of limit blocks 54 are arranged oppositely, and the positions of the limit blocks 54 close to the bottom end of the reverse osmosis membrane 13 are all arc-shaped. The arcs at the tops of the plurality of limit blocks 54 can form a circle. The size of the circle, that is, the distance between two symmetric limit blocks 54, is equal to the size of the bottom end of the reverse osmosis membrane 13. The bottom end of the reverse osmosis membrane 13 can be completely engaged on the limit blocks 54.

[0033] On the side of the fixing plate 51, a flexible strip is fixedly arranged. The side size of the fixing plate 51 is equal to the size of the water outlet pipe 4. In the initial state, that is, when the reverse osmosis membrane 13 is placed inside the tank body 12, neither the limit structure nor the adjustment structure is affected by an external force. At this time, the fixing plate 51 is flush with the water outlet pipe 4. The side of the fixing plate 51 can be attached to the water outlet pipe 4, so as to achieve the purpose of closing the water outlet pipe 4 and prevent the remaining water body from flowing back into the inner bottom end of the tank body 12.

[0034] Place the reverse osmosis membrane 13 into the tank body 12. The reverse osmosis membrane 13 slides inside the tank body 12. The bottom end of the reverse osmosis membrane 13 contacts the limit structure on the inner wall of the bottom end of the tank body 12. The bottom end of the reverse osmosis membrane 13 is engaged in the circle formed by a plurality of limit blocks 54. As the reverse osmosis membrane 13 slides, the limit blocks 54 are pressed by an external force. The limit blocks 54 transmit the force to the fixed telescopic rod 53, which is compressed. The outer rod of the fixed telescopic rod 53 drives the limit plate 56 to slide inside the limit groove 52, and the limit spring 55 undergoes elastic deformation until the fixed telescopic rod 53 contracts to the lowest end. At this time, the limit blocks 54 are also at the lowest end. The bottom end of the reverse osmosis membrane 13 can be attached to the fixing plate 51, ensuring that the gap at the bottom end of the reverse osmosis membrane 13 can truly filter sewage while ensuring the stability of the movement of the reverse osmosis membrane 13. The elastic deformation of the limit spring 55 also buffers the impact of the gravity of the reverse osmosis membrane 13, avoiding damage to the bottom end and the outside of the reverse osmosis membrane 13 during the installation process.

[0035] Such as Figure 2 and Figure 3As shown, the adjusting structure includes a fixed base 61 provided at the bottom end of the fixed plate 51. A plurality of channels are formed at the top end of the fixed base 61. A positioning plate 62 is slidably connected to the inner sides of the plurality of channels. The top end of the positioning plate 62 is fixedly connected to the bottom end of the fixed plate 51. The positioning plate 62 is provided in plurality and serves to support the fixed plate 51. The bottom end of the positioning plate 62 is rotatably connected to an adjusting rod 63. The bottom end of the adjusting rod 63 is rotatably connected to an adjusting block 64. The adjusting block 64 includes an arc-shaped block and a positioning slider. The bottom end of the arc-shaped block is fixedly connected to the positioning slider. The positioning slider is embedded in the inner side of the chute 65. The positioning slider can move freely inside the chute 65;

[0036] A stop block is provided in the middle of the chute 65. The distance between the chute 65 and the stop block is the horizontal movement distance of the adjusting rod 63 from being inclined to being vertical with the adjusting block 64. In the initial state, the fixed plate 51, the positioning plate 62 and the adjusting rod 63 are kept vertical and are in a straight line among them. When the fixed plate 51 moves downward, the positioning plate 62 moves vertically downward. The adjusting rod 63 will rotate under the combined action of the positioning plate 62 and the adjusting block 64. When the fixed plate 51 moves to the lowest end, the adjusting rod 63 rotates to the maximum angle. At this time, the adjusting block 64 is located on one side of the chute 65. Two fixing blocks are fixedly connected to the middle of the two adjusting rods 63. The two fixing blocks are arranged oppositely, and the two fixing blocks are connected by a fixing spring. When the angle of the adjusting rod 63 changes, it drives the fixing blocks to move synchronously. The relative movement of the two fixing blocks exerts a force on the elastic structure 66, and the elastic structure 66 stretches to undergo elastic deformation.

[0037] While the reverse osmosis membrane 13 is placed inside the tank body 12 and drives the limiting structure to move, the downward movement of the fixing plate 51 in the limiting structure will drive the plurality of fixed bases 61 fixedly connected to the bottom end to move synchronously. The positioning plate 62 slides inside the channel. The positioning plate 62 moves downward. The distance between the bottom end of the positioning plate 62 and the top end of the adjusting block 64 becomes smaller. The adjusting rod 63 provided therein will rotate at a certain angle under the action of the two. The rotation of the adjusting rod 63 causes vertical and horizontal position changes. The vertical position change is the same as the distance between the positioning plate 62 and the adjusting block 64, and the horizontal position change is equal to the sliding distance of the adjusting block 64 inside the chute 65.

[0038] When the reverse osmosis membrane 13 needs to be replaced, first open the tank cover 11 at the top of the reverse osmosis tank 1. The tank cover 11 no longer closes the tank body 12, and the water outlet 31 in the middle of the tank cover 11 is also far away from the top of the reverse osmosis membrane 13, no longer restricting the top of the reverse osmosis membrane 13. The force of the elastic deformation of the limiting spring 55 in the limiting structure is equal to the gravity of the reverse osmosis membrane 13. The force of the elastic deformation of the elastic structure 66 in the adjustment structure is greater than the gravity of the reverse osmosis membrane 13 and the limiting structure to counterbalance the gravity. The elastic deformation of the elastic structure 66 is restored, pulling the two adjusting rods 63 closer to each other, so that the inclined state of the adjusting rod 63 approaches the vertical state. The rotation of the adjusting rod 63 pushes the positioning plate 62 upward. The positioning plate 62 pushes the fixing plate 51, and the fixing plate 51 pushes the reverse osmosis membrane 13, so that the reverse osmosis membrane 13 moves from the state of being completely embedded in the inner wall of the tank body 12 to the state of exposing part of the structure from the tank body 12, facilitating the workers to replace the old reverse osmosis membrane 13. Without the workers having to remove the bolts, the disassembly of the reverse osmosis membrane 13 can be completed.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reverse osmosis device for sewage treatment, comprising a reverse osmosis tank (1), a fixing frame (2), a pipeline (3) and a water outlet pipe (4). A pipeline (3) for sewage entry is arranged at the top end of the reverse osmosis tank (1), and a water outlet pipe (4) for outputting the treated water body is arranged at the bottom end of the reverse osmosis tank (1). The reverse osmosis tank (1) is fixed inside the fixing frame (2); It is characterized in that: The reverse osmosis tank (1) is composed of a tank cover (11), a tank body (12) and a reverse osmosis membrane (13). The tank cover (11) is located at the top end. The bottom end of the tank cover (11) is fixedly connected to the tank body (12). The reverse osmosis membrane (13) is snap - connected inside the tank body (12). A limiting structure is snap - connected to the bottom end of the tank body (12). When the bottom end of the reverse osmosis membrane (13) is placed inside the tank body (12), the bottom end of the reverse osmosis membrane (13) is restricted and positioned by the limiting structure. The limiting structure includes a fixing plate (51). The top end of the fixing plate (51) can be attached to the bottom end of the reverse osmosis membrane (13). The movement of the reverse osmosis membrane (13) can drive the fixing plate (51) to move. The bottom end of the fixing plate (51) is fixedly connected to an adjusting structure, and the adjusting structure can be deformed and adjusted according to different heights of the fixing plate (51); The adjusting structure includes a fixing base (61) arranged at the bottom end of the fixing plate (51). A plurality of channels are opened at the top end of the fixing base (61). A positioning plate (62) is slidably connected inside the plurality of channels. The bottom end of the positioning plate (62) is rotatably connected to an adjusting rod (63). The bottom end of the adjusting rod (63) is rotatably connected to an adjusting block (64); The adjusting block (64) includes an arc - shaped block and a positioning slider. The bottom end of the arc - shaped block is fixedly connected to the positioning slider; A chute (65) is opened at the inner bottom end of the fixing base (61), and the adjusting block (64) is slidably connected inside the chute (65); A stop block is arranged in the middle of the chute (65). The distance between the chute (65) and the stop block is the horizontal movement distance of the adjusting rod (63) from tilting to being vertical with the adjusting block (64); An elastic structure (66) is fixedly connected in the middle of the two adjusting rods (63). The elastic structure (66) includes two fixing blocks. The two fixing blocks are arranged oppositely, and the two fixing blocks are connected by a fixing spring.

2. The reverse osmosis device for sewage treatment according to claim 1, wherein: A pipeline (3) is fixedly connected to the middle of the top end of the tank cover (11). A water outlet (31) is sleeved at the bottom end of the pipeline (3). The bottom end of the water outlet (31) is attached to the top end of the reverse osmosis membrane (13). A round block is fixedly connected to the outside of the water outlet (31), and the round block is fixedly arranged at the bottom end of the tank cover (11) close to the tank body (12).

3. The reverse osmosis device for sewage treatment according to claim 1, wherein: The limiting structure further includes limiting grooves (52) symmetrically opened inside the fixing plate (51). A fixed telescopic rod (53) is fixedly connected inside the limiting grooves (52). A limiting block (54) is fixedly connected to the top end of the fixed telescopic rod (53), The positions of the symmetrically arranged limiting blocks (54) close to the bottom end of the reverse osmosis membrane (13) are all set to be arc-shaped, and the distance between the two limiting blocks (54) is equal to the size of the bottom end of the reverse osmosis membrane (13); A flexible strip is fixedly arranged on the side of the fixing plate (51), and the side size of the fixing plate (51) is equal to the size of the water outlet pipe (4).

4. The reverse osmosis device for sewage treatment according to claim 3, wherein: The fixed telescopic rod (53) is composed of an outer rod and an inner rod. The inner rod is slidably connected to the inner side of the outer rod. The bottom end of the inner rod is fixedly connected to the bottom end of the limiting groove (52). The bottom end of the outer side of the outer rod is fixedly connected with a limiting plate (56), and the top end of the limiting plate (56) is fixedly connected with a limiting spring (55).

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