Sewage treatment device and sewage treatment process

Abstract

The present invention discloses a sewage treatment device and a sewage treatment process, which relates to the technical field of sewage treatment, including: an equipment main body, which is provided with a dosing tank, a reaction sedimentation tank, a transition tank and a clear water tank distributed in sequence, and an overflow port is provided between the reaction sedimentation tank and the transition tank; a filter housing, which has an inner cavity and is located above the equipment main body; and a plurality of pressure filter covers, which are all located inside the filter housing. The present invention realizes that a complete and connected water flow path is automatically formed after the filter element installation cover is installed in place by squeezing the air storage part so that the piston plate drives the water baffle to move downward. At the same time, the air pressure in the first chamber and the second chamber increases, pushing the elastic diaphragm to fit tightly against the inner wall of the fixed cover, thereby improving the sealing between the side of the water guide seat and the inner wall of the fixed cover. In addition, the upper and lower ends of the air storage part are respectively tightly fitted with the water guide seat and the connecting groove, ensuring the sealing between the water guide seat and the connecting groove to avoid water leakage.

Description

Technical Field

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

[0002] A sewage treatment device is a device that purifies sewage after it is discharged into a water body to meet the water quality requirements for reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, catering, etc., and is increasingly entering the daily lives of ordinary people.

[0003] For example, a sewage treatment device with publication number CN113683195A includes a housing, a spiral device, an aerator, and a first reaction body. The housing has a cavity formed therein for holding sewage. The spiral device is disposed within the cavity to cause the sewage to flow in a spiral from the beginning to the end of the housing. The aerator is disposed on one side of the spiral device. The first reaction body is disposed within the cavity and in the direction of the aerator's jet flow, and is configured to react with pollutants in the sewage. This device is intended to improve sewage treatment quality and efficiency without compromising sewage treatment quality.

[0004] The above technical solution has some problems in practical application. The sewage treatment process of this technical solution is simple and the sewage treatment effect is poor. In addition, the device needs to be shut down when it needs to be cleaned and maintained, and long-term continuous treatment of sewage cannot be achieved. Moreover, in the process of disassembly and maintenance of the device components, the components will cause wear, resulting in a decrease in the sealing between the components, resulting in water leakage. At the same time, some sewage will flow out during the disassembly and assembly process, causing pollution to the outside.

[0005] Therefore, it is necessary to invent a sewage treatment device and a sewage treatment process to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a sewage treatment device and a sewage treatment process to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a sewage treatment device, comprising: an equipment main body, which is provided with a dosing tank, a reaction sedimentation tank, a transition tank and a clear water tank distributed in sequence; a filter housing, which has an inner cavity and is located above the equipment main body; a pressure filter cover, which is provided with multiple and all located inside the filter housing, and a filter element mounting groove is provided on one side of the pressure filter cover; a water guide cover, which is located at the top of the pressure filter cover; a fixed cover, which is located inside the water guide cover; a water guide seat, which is located inside the fixed cover; a filter element mounting cover, which is located in the filter element mounting groove and is provided with multiple cylindrical filter screens for filtration inside; an elastic diaphragm, which is two in number and has an annular structure, and the two elastic diaphragms are symmetrically arranged on both sides of the corresponding water guide seat, the inner periphery of the elastic diaphragm is sealed with the water guide seat, and the outer periphery of the elastic diaphragm is sealed with the inner wall of the fixed cover.

[0008] Preferably, it also includes: a water guide pipe, which is connected to the top of the water guide cover; a water guide cavity, which is located inside the water guide cover and is used for filtering sewage, and the fixed cover is located inside the water guide cavity.

[0009] Preferably, it also includes: two water baffles, which are slidably arranged inside the water guide seat; an air storage portion, which is fixedly arranged at the bottom end of the water guide seat; two piston chambers, which are opened inside the water guide seat; a piston plate, which is sealingly slidably arranged in the corresponding piston chamber and fixedly connected to the bottom end of the corresponding water baffle; a reset member, which is fixedly arranged at the bottom end of the corresponding piston plate; a first air duct, which is opened inside the water guide seat, and one end of the first air duct is connected to the air storage portion, and the other end is connected to the top end of the piston chamber.

[0010] Preferably, it also includes: the elastic diaphragm and the water guide seat cooperate with each other to divide the interior of the fixed cover into a first chamber and a second chamber, and the first chamber is located above the second chamber; an air separation channel, which runs through the water guide seat, the upper end of the air separation channel is connected to the first chamber, and the lower end of the air separation channel is connected to the second chamber; a second air channel, which is opened in the interior of the water guide seat, and one end of the second air channel is connected to the bottom end of the piston chamber, and the other end is connected to the top end of the second chamber; a one-way valve, which is arranged on both sides of the fixed cover and can discharge the water in the fixed cover to the outside.

[0011] Preferably, it also includes: a water guide hole, which is provided in multiple numbers and is opened at the bottom end of the water guide seat; a slot, which is provided between the fixed cover and the pressure filter cover, and the water guide seat can move up and down in the slot, and a spring is provided between the top of the water guide seat and the top inner wall of the water guide cavity; a guide groove, which is provided inside the water guide seat and is located at the top of the water guide hole; a guide hole, which is provided on the outer wall of the fixed cover and is adapted to the guide groove, and when the water guide seat is lifted up by the filter element mounting cover, the guide hole and the guide groove coincide to allow sewage to flow.

[0012] and a filter element, the filter element including a top portion and a bottom portion thereof being configured to filter the filter element. The filter element also includes a filter element having a plurality of filter elements, the filter element including a top portion and a bottom portion thereof being configured to filter the filter element. The filter element also includes a filter element having a plurality of filter elements, the filter element including a top portion and a bottom portion thereof being configured to filter the filter element. The filter element also includes a filter element having a plurality of filter elements, the filter element including a filter element

[0013] Preferably, it also includes: a sealing seat, which is provided with two and is respectively located at both ends of the cylindrical filter screen, and the sealing seat is provided through the interior of the outer mounting groove; a through groove, which is provided in multiple numbers and is provided on one side of the sealing seat close to the cylindrical filter screen, and the multiple through grooves are all located between the partition plate and the filter element mounting cover; a sealing ring, which is located at one end of the sealing seat close to the cylindrical filter screen and fits tightly with the inner mounting groove, and the sealing ring is used to seal the connection between the cylindrical filter screen and the inner mounting groove; a sealing plate, which is located at one end of the corresponding sealing seat; a sealing groove, which is provided at the notch of the corresponding outer mounting groove, and the sealing plate and the sealing groove cooperate with each other to limit the cylindrical filter screen from being inserted between the two partition plates; an extension cover, which is located at one end of the drain valve and is provided between the two partition plates, and multiple strip grooves are provided on both sides of the extension cover, and the strip grooves extend between the partition plate and the filter element mounting cover, and the extension cover is used to guide the filtered sewage into the drain valve.

[0014] Preferably, it also includes: a flow guide cover, which is located below the filter element mounting cover and is provided with an opening on the upper surface, one end of the flow guide cover is provided with a bend pipe, and the bend pipe is located above the clear water tank; a diaphragm pump, which is located above the equipment body, the diaphragm pump is used to extract sewage above the transition tank and transport it to the pressure filter cover, the diaphragm pump transports the sewage to the water guide cover through the water pipe; a delivery pump, which is located between the dosing tank and the reaction sedimentation tank, the delivery pump is used to extract sewage at the bottom of the dosing tank into the reaction sedimentation tank.

[0015] Preferably, it also includes: an overflow port, which is arranged between the reaction sedimentation tank and the transition tank; a plurality of reflux pipes, which are respectively connected to the bottom ends of the reaction sedimentation tank, the transition tank and the clear water tank, and the other end of each reflux pipe is connected to the dosing tank. The reflux pipe is used to guide the sewage in the reaction sedimentation tank, the transition tank and the clear water tank to flow back to achieve secondary treatment.

[0016] A sewage treatment process comprises the following steps:

[0017] Step 1: Sewage injection: pump the sewage into the dosing tank through the sewage pump;

[0018] Step 2: Sewage pretreatment: Add sewage treatment chemicals to the sewage and stir the sewage in the dosing tank to fully mix it with the chemicals. Then, the sewage is transported to the reaction sedimentation tank through a delivery pump. The sewage reacts with the chemicals in the reaction sedimentation tank. The solid impurities precipitated by the reaction are deposited at the bottom of the reaction sedimentation tank. The precipitated sewage enters the transition tank through the overflow port.

[0019] Step 3: Sewage filtration: The diaphragm pump is used to extract the sewage from the transition tank, so that the sewage passes through the pressure filter cover and enters the filter element installation cover, and then is filtered by the cylindrical filter screen and discharged through the drain valve;

[0020] Step 4: Clean water collection: the sewage discharged from the drain valve is guided by the guide cover into the clean water tank, and the clean water in the clean water tank is discharged through the drainage pump.

[0021] The technical effects and advantages of the present invention are as follows:

[0022] 1. The present invention sets a dosing tank, a reaction sedimentation tank, a transition tank and a clear water tank. During the treatment process, the sewage passes through the dosing tank, the reaction sedimentation tank, the transition tank and the clear water tank in sequence, and completes dosing, reaction, precipitation, filtration and collection respectively. During this process, the sewage can be fully mixed with the reagent to ensure the precipitation of impurities, thereby ensuring the treatment effect of the sewage. In addition, the bottom ends of the reaction sedimentation tank, the transition tank and the clear water tank are all provided with a return pipe. The return pipe can realize the reflux guidance of the sewage to achieve multiple circulation treatment of the sewage, thereby further improving the treatment effect of the device on the sewage.

[0023] 2. The present invention provides a pressure filter cover and a filter element installation cover. After the sewage passes through the transition tank and settles, it enters the pressure filter cover and the filter element installation cover. During this process, the multiple cylindrical filter screens inside the filter element installation cover can filter the sewage. The sewage can penetrate inward from the surface of the cylindrical filter screen. The surface area of ​​the cylindrical filter screen is large to ensure the filtering effect of the sewage. In addition, the large surface area can reduce the frequency of the cylindrical filter screen being blocked by impurities in the sewage, thereby improving the maintenance cycle of the device and facilitating the maintenance of the device.

[0024] 3. The present invention provides a filter element installation cover, which can simultaneously realize the installation of multiple cylindrical filter screens, and the cylindrical filter screen and the filter element installation cover can be separated, and the filter element installation cover can be separated from the pressure filter cover to facilitate the disassembly and cleaning of the cylindrical filter screen. In addition, a connecting groove and a water guide seat are provided between the filter element installation cover and the pressure filter cover. The sewage channel between the connecting groove and the water guide seat can be automatically closed after the filter element installation cover is separated from the pressure filter cover, thereby ensuring continuous sewage treatment while allowing the cylindrical filter screen to be disassembled and cleaned, and the device can be cleaned and maintained without stopping.

[0025] 4. The present invention uses an elastic diaphragm in conjunction with a water baffle. When the filter element mounting cover is not installed in place in the filter element mounting groove, the water baffle always blocks the guide groove to prevent sewage from flowing downward when the water guide seat is not aligned with the connecting groove, thereby preventing pollution in the pressure filter cover. At the same time, the elastic diaphragm can block the guide hole to prevent sewage from entering between the fixed cover and the water guide seat through the guide hole to cause pollution, and prevent resistance to the up and down movement of the water guide seat.

[0026] 5. The present invention cooperates with the use of a water baffle, an air storage part, a piston plate, a first chamber, a second chamber and a one-way valve. The air storage part is squeezed so that the piston plate drives the water baffle to move downward, so that a complete and connected water flow path is automatically formed after the filter element mounting cover is installed in place, so as to facilitate filtering. At the same time, the air pressure in the first chamber and the second chamber increases, pushing the elastic diaphragm to recover its deformation to both sides. The elastic diaphragm fits tightly on the inner side wall of the fixed cover, thereby improving the sealing between the side of the water guide seat and the inner side wall of the fixed cover. In addition, the upper and lower ends of the air storage part fit tightly with the bottom end of the water guide seat and the bottom of the connecting groove respectively, thereby ensuring the sealing between the water guide seat and the connecting groove and avoiding water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the overall front view structure of the present invention.

[0029] Figure 3 This is a schematic diagram of the installation position of the water pipe of the present invention.

[0030] Figure 4 It is a schematic diagram of the structure of the pressure filter cover and the filter element installation cover of the present invention.

[0031] Figure 5 This is a schematic diagram of the filter element mounting cover structure of the present invention.

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the pressure filter cover of the present invention.

[0033] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of the filter element installation cover of the present invention.

[0035] Figure 9 It is a schematic diagram of the cylindrical filter structure of the present invention.

[0036] Figure 10 It is a schematic diagram of the cross-sectional structure of the water guide seat of the present invention.

[0037] Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure at point B in the middle.

[0038] Figure 12 This is a schematic diagram of the installation position of the elastic diaphragm of the present invention.

[0039] Figure 13 This is a schematic diagram of the state of the present invention when the filter element mounting cover is not installed.

[0040] Figure 14 This is a schematic diagram of the state of the filter element installation cover during the installation process of the present invention.

[0041] Figure 15 This is a schematic diagram of the state after the filter element mounting cover of the present invention is installed.

[0042] In the figure: 1. Equipment body; 2. Filter housing; 3. Pressure filter cover; 4. Filter element installation cover; 5. Flow guide cover; 6. Diaphragm pump; 7. Delivery pump; 8. Elastic diaphragm; 11. Dosing tank; 12. Reaction sedimentation tank; 121. Overflow port; 13. Transition tank; 14. Clear water tank; 15. Return pipe; 31. Filter element installation slot; 32. Water guide cover; 321. Water guide cavity; 322. Fixed cover; 323. Water guide seat; 324. Water guide hole; 325. Slot; 326. Spring; 327. Flow guide groove; 328. Flow guide hole; 33. Water guide pipe; 41. Drain valve; 41 1. Extension cover; 412. Strip groove; 42. Connecting groove; 421. Water hole; 43. Partition plate; 431. Inner mounting groove; 44. Outer mounting groove; 45. Cylindrical filter; 451. Channel; 452. Sealing seat; 453. Through groove; 454. Sealing ring; 455. Sealing plate; 456. Sealing groove; 51. Opening; 81. Water baffle; 82. Air storage part; 83. Piston chamber; 84. Piston plate; 85. Reset member; 86. First air duct; 87. First chamber; 88. Second chamber; 89. Air distribution channel; 810. Second air duct; 811. One-way valve. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Example 1

[0045] like Figures 1 to 9 As shown, a sewage treatment device provided according to the present invention is essentially a device for treating sewage by adding drugs, sedimentation, and filtration. During the treatment process, the sewage passes through the dosing tank 11, the reaction sedimentation tank 12, and the transition tank 13 in sequence to complete the reaction sedimentation, and then the sewage is filtered to obtain clean water. The clean water enters the clean water tank 14 for collection to complete the sewage treatment, and the water in the reaction sedimentation tank 12, the transition tank 13 and the clean water tank 14 can be returned to the dosing tank 11 through the return pipe 15 for secondary treatment to ensure the sewage treatment effect. In addition, by setting the pressure filter cover 3 and the filter element mounting cover 4, the pressure filter cover 3 and the filter element mounting cover 4 are set to a detachable structure, and the interior of the filter element mounting cover 4 is provided with a plurality of cylindrical filter screens 45. The cylindrical filter screen 45 can filter the sewage, and the detachable design of the filter element mounting cover 4 and the pressure filter cover 3 facilitates the replacement and maintenance of the cylindrical filter screen 45. In addition, after the filter element mounting cover 4 is separated from the pressure filter cover 3, the sewage passage between the two is automatically closed without affecting the continuous operation of the device.

[0046] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment, and no special limitation is made in this embodiment.

[0047] In this embodiment, a sewage treatment device includes:

[0048] The equipment body 1 has a dosing tank 11 , a reaction and sedimentation tank 12 , a transition tank 13 and a clear water tank 14 arranged in sequence therein. An overflow port 121 is provided between the reaction and sedimentation tank 12 and the transition tank 13 .

[0049] A dosing pump is provided above the dosing tank 11 , and a stirrer is provided at the bottom of the dosing tank 11 . Both the dosing pump and the stirrer are prior art and will not be described in detail herein and are not shown in the figures.

[0050] There are multiple reflux pipes 15, which are respectively arranged at the bottom ends of the reaction sedimentation tank 12, the transition tank 13 and the clear water tank 14. The other end of each reflux pipe 15 is connected to the dosing tank 11. The reflux pipe 15 is used to guide the sewage in the reaction sedimentation tank 12, the transition tank 13 and the clear water tank 14 to return to achieve secondary treatment.

[0051] The filter housing 2 has an inner cavity and is located above the device body 1 .

[0052] The pressure filter cover 3 is provided with multiple and all are located inside the filter housing 2, and a filter element mounting groove 31 is provided on one side of the pressure filter cover 3; a water guide cover 32 is located at the top of the pressure filter cover 3; a water guide pipe 33 is connected and arranged at the top of the water guide cover 32, and the diaphragm pump 6 transports the sewage into the water guide cover 32 through the water guide pipe 33; a water guide cavity 321 is located inside the water guide cover 32 and is used for filtering sewage; a fixed cover 322 is located inside the water guide cavity 321; a water guide seat 323 is located inside the fixed cover 322; a plurality of water guide holes 324 are provided and are opened at the bottom end of the water guide seat 323; a slot 325 is provided Between the fixed cover 322 and the pressure filter cover 3, the water guide seat 323 can move up and down in the slot 325. A spring 326 is provided between the top of the water guide seat 323 and the top inner wall of the water guide chamber 321. The spring 326 is used to apply a downward force to the water guide seat 323 so that it can move downward after being separated from the connecting groove 42; the guide groove 327 is provided inside the water guide seat 323 and is located at the top of the water guide hole 324; the guide hole 328 is provided on the outer wall of the fixed cover 322 and is adapted to the guide groove 327. When the water guide seat 323 is pushed upward by the filter element mounting cover 4, the guide hole 328 coincides with the guide groove 327 to allow sewage to flow.

[0053] The filter element mounting cover 4 is located in the filter element mounting groove 31 and is provided with multiple cylindrical filter screens 45 for filtering inside, and a drain valve 41 is provided at the outer bottom end of the filter element mounting cover 4; the connecting groove 42 is located in the middle of the top of the filter element mounting cover 4 and is adapted to the water guide seat 323; there are multiple water holes 421 and they are opened at the bottom of the connecting groove 42. The water holes 421 are adapted to the water guide holes 324. The sewage in the water guide cover 32 can enter the interior of the filter element mounting cover 4 through the water guide cavity 321, the water guide seat 323, the water guide holes 324 and the water holes 421 for filtration.

[0054] It should be noted that the notch of the connecting groove 42 and the bottom end of the water guide seat 323 are both provided with rounded corners. When the filter element mounting cover 4 is inserted or pulled out, the rounded corners squeeze each other to provide power for the up and down sliding of the water guide seat 323, so as to facilitate the connection or separation of the water guide seat 323 and the connecting groove 42.

[0055] There are two partition plates 43, both of which are located inside the filter element mounting cover 4. The partition plates 43 divide the inside of the filter element mounting cover 4 into three parts. The sewage first enters between the two partition plates 43 and is discharged through the space between the partition plates 43 and the filter element mounting cover 4 after filtration. The inner mounting groove 431 is located in the middle of the partition plate 43; the outer mounting groove 44 is located on the outer surface of the filter element mounting cover 4. The inner mounting groove 431 and the outer mounting groove 44 are both circular structures. The cylindrical filter screen 45 is located between the two partition plates 43 and is respectively connected to the filter element mounting cover 4 at both ends. In the two inner mounting grooves 431; the channel 451 is provided in the middle of the cylindrical filter screen 45, and the sewage in the filter element mounting cover 4 passes through the cylindrical filter screen 45 from the side, and enters between the partition plate 43 and the filter element mounting cover 4 through the channel 451, and is then discharged through the drain valve 41; the design of the cylindrical structure enables the cylindrical filter screen 45 to have a larger surface area, thereby improving the filtering efficiency of the cylindrical filter screen 45 for sewage, and the larger surface area can extend the clogging period of the cylindrical filter screen 45, thereby extending the maintenance period of the device.

[0056] Two sealing seats 452 are provided and are located at both ends of the cylindrical filter screen 45. The sealing seats 452 extend through the interior of the outer mounting groove 44. A plurality of through grooves 453 are provided and are located on the side of the sealing seat 452 close to the cylindrical filter screen 45. The multiple through grooves 453 are all located between the partition plate 43 and the filter element mounting cover 4. A sealing ring 454 is located at one end of the sealing seat 452 close to the cylindrical filter screen 45 and is tightly fitted with the inner mounting groove 431. The sealing ring 454 is used to seal the connection between the cylindrical filter screen 45 and the inner mounting groove 431. A sealing plate 455 is located at one end corresponding to the sealing seat 452. The sealing groove 456 is provided at the notch corresponding to the outer mounting groove 44, and the sealing plate 455 cooperates with the sealing groove 456 to limit the cylindrical filter screen 45 from being inserted between the two partition plates 43; the extension cover 411 is located at one end of the drain valve 41 and is provided between the two partition plates 43. A plurality of strip grooves 412 are provided on both sides of the extension cover 411, and the strip grooves 412 extend to between the partition plates 43 and the filter element mounting cover 4. The extension cover 411 is used to guide the filtered sewage into the drain valve 41. The extension cover 411 can form a space at one end of the drain valve 41 to facilitate the mixed discharge of the filtered sewage.

[0057] The flow guide cover 5 is located below the filter element installation cover 4 and is provided with an opening 51 on the upper surface. An elbow is provided at one end of the flow guide cover 5 , and the elbow is located above the clean water tank 14 .

[0058] The diaphragm pump 6 is located above the equipment body 1 . The diaphragm pump 6 is used to extract sewage above the transition tank 13 and transport it to the pressure filter cover 3 .

[0059] The delivery pump 7 is located between the dosing tank 11 and the reaction sedimentation tank 12. The delivery pump 7 is used to pump the sewage at the bottom of the dosing tank 11 into the reaction sedimentation tank 12. The reagent and sewage are injected from the top of the dosing tank 11. Therefore, the sewage at the bottom of the dosing tank 11 is evenly mixed with the reagent. Pumping the sewage at the bottom can ensure the treatment effect of the reagent on the sewage.

[0060] When using a sewage treatment device of this embodiment, the sewage is mixed with the reagent in the dosing tank 11, and then reacts with the reagent in the reaction sedimentation tank 12. The solid impurities precipitated by the reaction are deposited at the bottom of the reaction sedimentation tank 12. The sewage after precipitation enters the transition tank 13 through the overflow port 121, and then the sewage in the transition tank 13 is transported to the pressure filter cover 3 and the filter element installation cover 4 for filtration through the diaphragm pump 6, and then enters the clear water tank 14 through the guidance of the guide cover 5.

[0061] When the sewage enters the pressure filter cover 3, the sewage first passes through the water pipe 33 and enters the water guide cavity 321 in the multiple water guide covers 32, and then passes through the guide hole 328 and the guide groove 327 in turn to enter the water guide hole 324, and then passes through the water hole 421 to enter between the two partition plates 43 inside the filter element installation cover 4. At this time, the sewage is located on the outside of the cylindrical filter screen 45. The sewage penetrates through the cylindrical filter screen 45 and enters the channel 451 in the middle. At this time, the impurities in the sewage are filtered and adsorbed by the cylindrical filter screen 45. The filtered sewage passes through the channel 451 into the space between the partition plate 43 and the filter element installation cover 4, and then passes through the strip groove 412 into the extension cover 411 and is discharged through the drain valve 41. At this point, the sewage completes the filtration process.

[0062] When cleaning the cylindrical filter screen 45, the filter element mounting cover 4 is pulled out from the pressure filter cover 3. At this time, the connecting groove 42 is separated from the bottom end of the water guide seat 323. At this time, the water guide seat 323 moves downward under the action of the spring 326. The guide groove 327 on the outside of the water guide seat 323 is misaligned with the guide hole 328 on the outside of the fixed cover 322. At this time, the passage composed of the guide hole 328, the guide groove 327 and the water guide hole 324 is closed. At this time, the sewage cannot enter the pressure filter cover 3 from which the filter element mounting cover 4 is pulled out, while the remaining pressure filter cover 3 and the filter element mounting cover 4 can filter the sewage normally. Then, the cylindrical filter screen 45 is taken out from the inner mounting groove 431 and the outer mounting groove 44, and the cylindrical filter screen 45 can be cleaned.

[0063] After cleaning, the cylindrical filter screen 45 is installed in the inner mounting groove 431 and the outer mounting groove 44 until the sealing plate 455 at one end thereof is inserted into the sealing groove 456. At this time, the cylindrical filter screen 45 is located between the two inner mounting grooves 431 and is sealed with the inner mounting groove 431 through the sealing ring 454. Then, the filter element mounting cover 4 is inserted into the pressure filter cover 3 so that the connecting groove 42 pushes the water guide seat 323 upward. At this time, the guide hole 328 coincides with the guide groove 327, and the passage formed by the guide hole 328, the guide groove 327 and the water guide hole 324 is opened. The sewage can enter the water hole 421 through the guide hole 328, the guide groove 327 and the water guide hole 324, and then enter the filter element mounting cover 4 to achieve sewage filtration treatment.

[0064] The present invention also provides a sewage treatment process, comprising the following steps:

[0065] Step 1: Sewage injection: Sewage is pumped into the dosing tank 11 through a sewage pump;

[0066] Step 2: Pre-treatment of sewage: Add sewage treatment chemicals to the sewage and stir the sewage in the dosing tank 11 to fully mix it with the chemicals. The sewage is then transported to the reaction sedimentation tank 12 via the delivery pump 7. The sewage reacts with the chemicals in the reaction sedimentation tank 12. The solid impurities precipitated by the reaction are deposited at the bottom of the reaction sedimentation tank 12. The precipitated sewage enters the transition tank 13 through the overflow port 121.

[0067] Step 3: Sewage filtration: The diaphragm pump 6 extracts the sewage from the transition tank 13, allowing the sewage to pass through the pressure filter cover 3 and enter the filter element installation cover 4. The sewage is then filtered by the cylindrical filter screen 45 and discharged through the drain valve 41.

[0068] Step 4: Clean water collection: the sewage discharged from the drain valve 41 is guided by the guide cover 5 into the clean water tank 14, and the clean water in the clean water tank 14 is discharged by the drainage pump.

[0069] Example 2

[0070] In the above embodiment, sewage is filtered through multiple cylindrical filter screens 45, and the cylindrical filter screens 45 and the filter element mounting cover 4 as well as the filter element mounting cover 4 and the pressure filter cover 3 can be separated to facilitate disassembly and cleaning of the cylindrical filter screens 45. At the same time, when the filter element mounting cover 4 is separated from the pressure filter cover 3, the sewage passage between the water guide seat 323 and the connecting groove 42 is automatically disconnected, so that cleaning and maintenance can be carried out without stopping the equipment. However, during the long-term filtering use of the equipment, the bottom, side surfaces and bottom of the connecting groove 42 of the water guide seat 323 will be worn due to repeated disassembly and assembly of the filter element mounting cover 4 to disassemble and clean the cylindrical filter screen 45, resulting in reduced sealing between the bottom of the water guide seat 323 and the bottom of the connecting groove 42, and between the side surfaces of the water guide seat 323 and the inner wall of the fixed cover 322, thereby causing water leakage. In addition, during the installation and disassembly of the filter element mounting cover 4, as the water guide seat 323 moves up and down in the fixed cover 322, the guide groove 327 and the guide hole 328 will come into contact with each other. When the guide groove 327 and the guide hole 328 are connected to each other, since the water guide seat 323 has not yet been installed and is not aligned with the connecting groove 42, the sewage in the water guide cavity 321 will flow into the pressure filter cover 3, causing pollution to the interior of the pressure filter cover 3; when the guide groove 327 and the guide hole 328 are disconnected from each other, the sewage in the water guide cavity 321 will flow through the guide hole 328 into the space between the fixed cover 322 and the water guide seat 323, affecting the up and down sliding of the water guide seat 323 and also causing pollution between the fixed cover 322 and the water guide seat 323. Therefore, based on the above problems, further improvements are made to the solution of the present invention.

[0071] Specifically, such as Figures 10 to 15As shown, it also includes: an elastic diaphragm 8, which has two annular structures, and the two elastic diaphragms 8 are symmetrically sleeved on both sides of the corresponding water guide seat 323, the inner periphery of the elastic diaphragm 8 is sealed with the water guide seat 323, and the outer periphery of the elastic diaphragm 8 is sealed with the inner wall of the fixed cover 322. When the water guide seat 323 slides up and down in the fixed cover 322, the elastic diaphragms 8 on both sides thereof are deformed accordingly, and during the deformation process, the elastic diaphragm 8 always maintains a fixed seal with the water guide seat 323 and the fixed cover 322; a water baffle 81, which is provided with two and slidably arranged inside the water guide seat 323, when the water baffle 81 rises to its highest position, the two water baffles 81 block all the guide grooves 327 to prevent the water in the water guide cavity 321 from circulating in the guide grooves 327; an air storage part 82, which is fixedly arranged at the bottom end of the water guide seat 323, It is pre-filled with gas, and the air storage part 82 itself is elastic. A groove is provided at the bottom of the water guide seat 323, and the top of the air storage part 82 is fixedly connected to the groove; there are two piston chambers 83 and they are opened inside the water guide seat 323; the piston plate 84 is sealingly and slidably arranged in the corresponding piston chamber 83 and fixedly connected to the bottom end of the corresponding water baffle 81, and the piston plate 84 divides the piston chamber 83 into two independent chambers; the reset member 85 is fixedly arranged at the bottom end of the corresponding piston plate 84, and the reset member 85 can provide an upward thrust to the piston plate 84, so that when the air storage part 82 is not squeezed, the water baffle 81 is in a state of blocking the guide groove 327; the first air channel 86 is opened inside the water guide seat 323, and one end of the first air channel 86 is connected to the air storage part 82, and the other end is connected to the top of the piston chamber 83.

[0072] The elastic diaphragm 8 cooperates with the water guide seat 323 to divide the interior of the fixed cover 322 into a first chamber 87 and a second chamber 88, and the first chamber 87 is located above the second chamber 88; the air separation channel 89 runs through the water guide seat 323, the upper end of the air separation channel 89 is connected to the first chamber 87, and the lower end of the air separation channel 89 is connected to the second chamber 88; the second air channel 810 is opened inside the water guide seat 323, and one end of the second air channel 810 is connected to the bottom end of the piston chamber 83, and the other end is connected to the top end of the second chamber 88. The two ends are connected; the one-way valve 811 is arranged on both sides of the fixed cover 322, and can discharge the water in the fixed cover 322 to the outside. There are multiple one-way valves 811, which are respectively arranged at the upper and lower ends of the outer wall of the fixed cover 322, and are all connected to the interior of the fixed cover 322. The water between the elastic diaphragm 8 and the inner wall of the fixed cover 322 can be discharged to the outside of the fixed cover 322 through the one-way valve 811, while the water outside the fixed cover 322 cannot enter between the elastic diaphragm 8 and the inner wall of the fixed cover 322 through the one-way valve 811.

[0073] When the filter element installation cover 4 is not installed in the filter element installation groove 31, the position of the water guide seat 323 in the fixed cover 322 is as follows: Figure 13 As shown, at this time, the water guide seat 323 is located at the lower part of the fixed cover 322 under the action of the spring 326, and the air storage part 82 is not squeezed. Under the thrust of the reset member 85, the water baffle 81 is at the highest position and blocks the guide groove 327. The part of the elastic diaphragm 8 located above the water guide seat 323 blocks the guide hole 328 to prevent the water in the water guide cavity 321 from entering the first chamber 87.

[0074] During the process of installing the filter element installation cover 4 into the filter element installation groove 31, the position of the water guide seat 323 in the fixed cover 322 is as follows: Figure 14 As shown, at this time, the filter element mounting cover 4 pushes the water guide seat 323 upward, so that the water guide seat 323 is located at the upper part of the fixed cover 322, the spring 326 is in a compressed state, and the air storage part 82 is not significantly squeezed. Under the thrust of the reset member 85, the water baffle 81 still begins to block the guide groove 327, and the part of the elastic diaphragm 8 located below the water guide seat 323 blocks the guide hole 328 to prevent the water in the water guide cavity 321 from entering the second chamber 88, and in this process, part of the water in the water guide cavity 321 will pass through the guide hole 328 into the space between the elastic diaphragm 8 and the inner side wall of the fixed cover 322, causing the elastic diaphragm 8 to deform and the elastic diaphragm 8 to not fit the inner side wall of the fixed cover 322.

[0075] It should be noted that in the process of inserting the filter element mounting cover 4 into the filter element mounting groove 31, and before the filter element mounting cover 4 is installed in place, it is always the top edge of the filter element mounting cover 4, that is, the notch of the connecting groove 42 that pushes the water guide seat 323 upward. During this process, only the top edge of the filter element mounting cover 4 locally squeezes the air storage part 82, and the air storage part 82 is installed in the groove. Therefore, the interior of the air storage part 82 is always in a connected state, and the overall internal air pressure will not change significantly, and the gas in the air storage part 82 will not flow outward.

[0076] After the filter element installation cover 4 is installed in the filter element installation groove 31, the position of the water guide seat 323 in the fixed cover 322 is as follows: Figure 15As shown, at this time, the water guide seat 323 is located in the middle of the fixed cover 322, the guide hole 328 is connected to the guide groove 327, the spring 326 pushes the water guide seat 323 to move downward and makes the bottom end of the water guide seat 323 close to the bottom of the connecting groove 42, the connecting groove 42 and the water guide seat 323 squeeze the gas storage part 82, so that the gas storage part 82 is compressed into the inside of the groove, and the gas in the gas storage part 82 enters the piston chamber 83 above the piston plate 84 through the first air channel 86. The piston plate 84 overcomes the pressure The thrust of the positioning member 85 moves downward, and the piston plate 84 drives the water baffle 81 to move downward synchronously. The water baffle 81 no longer blocks the guide groove 327. At the same time, as the piston plate 84 moves downward, the gas in the piston chamber 83 below the piston plate 84 enters the second chamber 88 through the second air channel 810, and enters the first chamber 87 through the air distribution channel 89. The air pressure in the first chamber 87 and the second chamber 88 increases, pushing the elastic diaphragm 8 at the corresponding position to restore deformation to both sides.

[0077] By cooperating with the elastic diaphragm 8 and the water baffle 81, when the filter element mounting cover 4 is not installed in place in the filter element mounting groove 31, the water baffle 81 always blocks the guide groove 327 to prevent sewage from flowing downward when the water guide seat 323 is not aligned with the connecting groove 42, thereby preventing pollution to the pressure filter cover 3. At the same time, during the up and down movement of the water guide seat 323, the elastic diaphragm 8 can block the guide hole 328 to prevent sewage from entering between the fixed cover 322 and the water guide seat 323 through the guide hole 328 to cause pollution, and to prevent resistance to the up and down movement of the water guide seat 323.

[0078] By providing the elastic diaphragm 8, during the up and down movement of the water guide seat 323, sewage can only enter between the elastic diaphragm 8 and the inner wall of the fixed cover 322 through the diversion hole 328. The water entering between the elastic diaphragm 8 and the inner wall of the fixed cover 322 will force the elastic diaphragm 8 to deform inward, and the elastic diaphragm 8 will no longer fit the inner wall of the fixed cover 322, thereby reducing the friction between the elastic diaphragm 8 and the inner wall of the fixed cover 322, and avoiding resistance to the movement of the water guide seat 323 caused by friction.

[0079] By the coordinated use of the water baffle 81, the air storage portion 82, the piston chamber 83, the piston plate 84, the first chamber 87, the second chamber 88 and the one-way valve 811, when the filter element installation cover 4 is installed in place into the filter element installation groove 31, the air storage portion 82 is squeezed and contracted, so that the piston plate 84 drives the water baffle 81 to move downward, and the water baffle 81 no longer blocks the guide groove 327, thereby automatically forming a complete and connected water flow path after the filter element installation cover 4 is installed in place, so as to facilitate the filtering work. At the same time, the downward movement of the piston plate 84 will increase the air pressure in the first chamber 87 and the second chamber 88, and push the corresponding The elastic diaphragm 8 at the position recovers its deformation to both sides, and the water flowing into the space between the elastic diaphragm 8 and the inner wall of the fixed cover 322 is discharged through the one-way valve 811, and the elastic diaphragm 8 is tightly fitted on the inner wall of the fixed cover 322, thereby improving the sealing between the side of the water guide seat 323 and the inner wall of the fixed cover 322, and since the air storage part 82 is squeezed and shrunk in the groove opened at the bottom of the water guide seat 323, the upper and lower ends of the air storage part 82 are tightly fitted with the bottom end of the water guide seat 323 and the bottom of the connecting groove 42 respectively, thereby ensuring the sealing between the water guide seat 323 and the connecting groove 42, and avoiding the occurrence of water leakage.

[0080] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sewage treatment device, characterized in that: include: The main body of the equipment is equipped with a dosing tank, a reaction sedimentation tank, a transition tank and a clear water tank distributed in sequence; a filter housing having an interior cavity and positioned above the device body; A plurality of pressure filter covers are provided and are all located inside the filter housing, and a filter element mounting slot is provided on one side of the pressure filter cover; A water guide cover, which is located at the top of the pressure filter cover; A water guide pipe is connected to the top of the water guide cover; a fixed cover, which is located inside the water guide cover; A water guide cavity is located inside the water guide cover and is used for filtering sewage, and the fixed cover is located inside the water guide cavity; a water guide seat, which is located inside the fixed cover; A plurality of water guide holes are provided and opened at the bottom end of the water guide seat; A slot is provided between the fixed cover and the pressure filter cover, wherein the water guide seat can move up and down in the slot, and a spring is provided between the top end of the water guide seat and the top inner wall of the water guide cavity; A diversion groove is provided inside the water guide seat and located at the top of the water guide hole; The diversion hole is provided on the outer wall of the fixed cover and is adapted to the diversion groove. When the water guide seat is lifted up by the filter element installation cover, the diversion hole and the diversion groove coincide with each other to allow sewage to flow; A filter element installation cover is located in the filter element installation slot and is provided with a plurality of cylindrical filter screens for filtering; There are two elastic diaphragms in an annular structure. The two elastic diaphragms are symmetrically sleeved on both sides of the corresponding water guide seat. The inner periphery of the elastic diaphragm is sealed with the water guide seat, and the outer periphery of the elastic diaphragm is sealed with the inner wall of the fixed cover.

2. A sewage treatment device according to claim 1, characterized in that: Also includes: Two water baffles are provided and are slidably arranged inside the water guide seat; An air storage portion, which is fixedly arranged at the bottom end of the water guide seat; There are two piston chambers, which are opened inside the water guide seat; A piston plate is sealingly and slidably disposed in the corresponding piston cavity and is fixedly connected to the bottom end of the corresponding water retaining plate; A reset member, which is fixedly arranged at the bottom end of the corresponding piston plate; The first air channel is opened in the water guide seat, and one end of the first air channel is connected to the air storage part, and the other end is connected to the top end of the piston cavity.

3. A sewage treatment device according to claim 2, characterized in that: Also includes: The elastic diaphragm cooperates with the water guide seat to divide the interior of the fixed cover into a first chamber and a second chamber, and the first chamber is located above the second chamber; an air separation channel running through the water guide seat, wherein the upper end of the air separation channel is communicated with the first chamber, and the lower end of the air separation channel is communicated with the second chamber; a second air passage, which is opened inside the water guide seat, and one end of the second air passage is connected to the bottom end of the piston cavity, and the other end is connected to the top end of the second chamber; One-way valves are arranged on both sides of the fixed cover and can discharge water in the fixed cover to the outside.

4. A sewage treatment device according to claim 3, characterized in that: Also includes: A drain valve, located at the outer bottom end of the filter element mounting cover; A connecting groove is located in the middle of the top of the filter element mounting cover and is adapted to the water guide seat; A plurality of water holes are provided and are opened at the bottom of the connecting groove. The water holes are adapted to the water guide holes. The sewage in the water guide cover can pass through the water guide cavity, the water guide seat, the water guide holes and the water holes to enter the interior of the filter element installation cover for filtration; Two partition plates are provided and both are located inside the filter element installation cover, and the partition plates divide the interior of the filter element installation cover into three parts; an inner mounting groove, which is provided in the middle of the partition plate; An outer mounting groove is provided on the outer surface of the filter element mounting cover; The cylindrical filter is located between the two partition plates and its two ends are respectively inserted into the two inner mounting grooves; The channel is arranged in the middle of the cylindrical filter screen. The sewage in the filter element installation cover passes through the cylindrical filter screen from the side, enters between the partition plate and the filter element installation cover through the channel, and is then discharged through the drain valve.

5. A sewage treatment device according to claim 4, characterized in that: Also includes: Two sealing seats are provided and are located at both ends of the cylindrical filter screen respectively. The sealing seats are arranged inside the outer mounting groove; A plurality of through slots are provided and are located on one side of the sealing seat close to the cylindrical filter screen, and the plurality of through slots are located between the partition plate and the filter element mounting cover; A sealing ring, which is located at one end of the sealing seat close to the cylindrical filter screen and fits tightly with the inner mounting groove, and is used to seal the connection between the cylindrical filter screen and the inner mounting groove; a sealing plate, located at one end corresponding to the sealing seat; A sealing groove is provided at the notch corresponding to the outer mounting groove, and the sealing plate cooperates with the sealing groove to limit the cylindrical filter from being inserted between the two partition plates; An extension cover is located at one end of the drain valve and is arranged between two partition plates. A plurality of strip grooves are provided on both sides of the extension cover, and the strip grooves extend between the partition plate and the filter element installation cover. The extension cover is used to guide the filtered sewage into the drain valve.

6. A sewage treatment device according to claim 5, characterized in that: Also includes: A flow guide cover is located below the filter element mounting cover and has an opening on its upper surface. An elbow is provided at one end of the flow guide cover, and the elbow is located above the clear water tank. A diaphragm pump is located above the main body of the equipment. The diaphragm pump is used to extract sewage from the transition tank and transport it to the pressure filter cover. The diaphragm pump transports the sewage to the water guide cover through the water guide pipe; The delivery pump is located between the dosing tank and the reaction sedimentation tank. The delivery pump is used to pump sewage at the bottom of the dosing tank into the reaction sedimentation tank.

7. A sewage treatment device according to claim 6, characterized in that: Also includes: An overflow port is provided between the reaction sedimentation tank and the transition tank; There are multiple reflux pipes, which are respectively connected to the bottom ends of the reaction sedimentation tank, transition tank and clear water tank. The other end of each reflux pipe is connected to the dosing tank. The reflux pipe is used to guide the sewage in the reaction sedimentation tank, transition tank and clear water tank to return to achieve secondary treatment.

8. A sewage treatment process, applied to the sewage treatment device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Sewage injection: pump the sewage into the dosing tank through the sewage pump; Step 2: Sewage pretreatment: Add sewage treatment chemicals to the sewage and stir the sewage in the dosing tank to fully mix it with the chemicals. Then, the sewage is transported to the reaction sedimentation tank through a delivery pump. The sewage reacts with the chemicals in the reaction sedimentation tank. The solid impurities precipitated by the reaction are deposited at the bottom of the reaction sedimentation tank. The precipitated sewage enters the transition tank through the overflow port. Step 3: Sewage filtration: The diaphragm pump is used to extract the sewage from the transition tank, so that the sewage passes through the pressure filter cover and enters the filter element installation cover, and then is filtered by the cylindrical filter screen and discharged through the drain valve; Step 4: Clean water collection: the sewage discharged from the drain valve is guided by the guide cover into the clean water tank, and the clean water in the clean water tank is discharged through the drainage pump.

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