Water treatment multi-media filter

Abstract

The application relates to a water treatment multi-medium filter and relates to the technical field of sewage treatment equipment, which comprises a support, a tank body, a filtering assembly, a flushing assembly and an adjusting assembly; a water inlet pipe and a water outlet pipe are respectively arranged in communication with the top and the bottom of the tank body; the filtering assembly is provided in three groups; the filtering assembly comprises a first partition plate, a second partition plate and filtering media; the first partition plate and the second partition plate are arranged in the tank body, and filter holes are formed in the first partition plate and the second partition plate; the filtering media are located between the first partition plate and the second partition plate, and the filtering precision of the three filtering media gradually increases in the direction close to the bottom of the tank body; the flushing assembly is arranged on the tank body and is used for cleaning the filtering media; and the adjusting assembly is arranged on the tank body and is used for adjusting the distance between the first partition plate and the second partition plate. The application can improve the cleaning efficiency of the filtering media.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment equipment, and particularly relates to a water treatment multi-medium filter. BACKGROUND

[0002] The water treatment filter is a sewage treatment device which removes impurities in water by filtration, and is used to remove suspended solids, colloids and other impurities in sewage in a water treatment system to avoid damage to subsequent reverse osmosis membrane elements.

[0003] At present, when sewage is filtered and treated, filter materials such as anthracite, quartz sand and gravel are usually used as filter media. When used, the filter media are placed in layers in a container, and then the sewage to be treated is delivered into the container. When the sewage passes through the filter media, the suspended solids, colloids and other impurities in the sewage adhere to the surface of the filter media, so that the effect of removing impurities in the sewage is achieved.

[0004] In the above-mentioned filtering and treating of sewage, in order to ensure the removal effect of impurities in the sewage, the filter media need to be placed compactly, and the filter media particles are arranged closely.

[0005] After a certain amount of sewage is treated, impurities will adhere to the filter media, which reduces the treatment effect of the filter media on the sewage. At this time, the filter media need to be washed. When the filter media are washed, clean water is usually delivered into the container. When the water passes through the filter media, the impurities adhering to the filter media are carried out.

[0006] In the above-mentioned washing of the filter media, because the filter media particles are arranged closely, when the filter media are washed with water, the impurities adhering to the filter media are difficult to be discharged. A large amount of water needs to be used to continuously wash the filter media for a long time, which not only wastes a large amount of water resources, but also has low washing efficiency. SUMMARY

[0007] In order to improve the washing efficiency of the filter media, the present application provides a water treatment multi-medium filter.

[0008] The water treatment multi-medium filter provided by the present application adopts the following technical scheme:

[0009] The utility model provides a kind of water treatment multi-medium filter, including support, tank body, filter assembly, flushing assembly and adjusting assembly;The tank body is vertically arranged on the support, the tank body top is connected and is provided with inlet pipe, the tank body bottom is connected and is provided with outlet pipe;The filter assembly is arranged in the tank body, the filter assembly is provided with three groups, and is arranged along vertical direction, the filter assembly includes first baffle, second baffle and filter medium;The first baffle and the second baffle are coaxially arranged in the tank body, and filter hole is formed in the first baffle and the second baffle;The filter medium is located between the first baffle and the second baffle, and the filter precision of three filter media gradually increases along the direction close to the tank body bottom;The flushing assembly is arranged on the tank body, and the flushing assembly is used to clean the filter medium;The adjusting assembly is arranged on the tank body, and the adjusting assembly is used to adjust the distance between the first baffle and the second baffle.

[0010] By adopting the above technical scheme, when filtering and treating sewage, the sewage is transported into the tank body through the inlet pipe, and then flows into the space between the first baffle and the second baffle through the filter hole in the first baffle. The impurities such as suspended solids and colloids in the sewage adhere to the surface of the filter medium, and the sewage passing through the filter medium flows out from the filter hole in the second baffle. The sewage passes through three kinds of filter media with gradually increasing filter precision in sequence. The larger impurities in the sewage are removed at the top of the tank body, and the smaller impurities are removed at the bottom of the tank body. Finally, the clarified water is discharged through the outlet pipe. The multiple depth filtration is realized, the clarified water is obtained, the larger impurities are removed at the top of the tank body, and the filter hole in the first baffle and the filter medium located at the bottom of the tank body are prevented from being blocked. Therefore, the sewage treatment effect and efficiency are improved.

[0011] When cleaning the filter medium, the flushing assembly starts to work to flush the filter medium. During the flushing process, the distance between the first baffle and the second baffle is adjusted by the adjusting assembly, so that the distance between the first baffle and the second baffle increases, the pressure of the filter medium between the first baffle and the second baffle decreases, the arrangement of the filter medium particles becomes sparse, the impurities adhering to the filter medium can be more easily separated from the filter medium and discharged, and the cleaning efficiency of the filter medium is improved.

[0012] The filter medium is arranged between the first baffle and the second baffle, which can prevent the disorder phenomenon during the flushing process of the filter medium, so as to ensure the filtration efficiency of the impurities in the sewage.

[0013] Optionally, the water inlet pipe is provided with a first electric valve, the water outlet pipe is provided with a third electric valve, the flushing assembly comprises a flushing pipe and a sewage pipe, the flushing pipe is communicated with the bottom of the tank, and the sewage pipe is communicated with the top of the tank; the flushing pipe is provided with a second electric valve, and the sewage pipe is provided with a fourth electric valve.

[0014] By adopting the technical scheme, when sewage is filtered, the first electric valve and the third electric valve are opened, and the second electric valve and the fourth electric valve are closed, so that the sewage can enter the tank through the water inlet pipe, and the treated sewage can be discharged through the water outlet pipe. When the filter medium is filtered, the first electric valve and the third electric valve are closed, and the second electric valve and the fourth electric valve are opened, so that the clean water enters the tank through the flushing pipe, then flows into the space between the first baffle and the second baffle through the filter holes in the second baffle, washes the impurities attached to the surface of the filter medium, and carries the impurities out of the filter holes in the first baffle, and carries the washed impurities out of the tank through the sewage pipe, so that the backwashing of the filter medium is realized, that is, after the clean water enters the tank, the filter medium with the smallest particle size is washed first, and then the filter medium with larger particle size is washed. After the water is washed on the filter medium with the smallest particle size, the impurities with smaller particle size can be more easily carried through the filter medium with larger particle size, so that the washing efficiency of the filter medium is improved.

[0015] Optionally, the tank is rotationally connected with the support, and the rotation axis is horizontally arranged; the flushing assembly further comprises a rudder machine, the rudder machine is fixedly arranged on the support, and the rudder machine is used for driving the tank to rotate.

[0016] By adopting the technical scheme, when the filter medium is washed, the rudder machine works to make the tank rotate and invert, then the second electric valve and the fourth electric valve are opened, and the filter medium is washed by the clean water. Since the tank is inverted, after the filter medium is washed by the clean water, the clean water can be directly discharged from the tank through the sewage outlet at the bottom of the tank. In the traditional backwashing device, the sewage outlet is located at the top of the container. In order to discharge the washed sewage, a large amount of water is needed to continuously dilute and discharge the sewage in the container, which not only wastes water resources, but also has low efficiency.

[0017] Optionally, the first partition plate is located on top of the second partition plate; the second partition plate is fixedly connected with the tank body; the adjusting assembly is provided with three groups and corresponds to the filtering assembly one by one; the adjusting assembly comprises a connecting cylinder, a first piston rod and a second piston rod; the connecting cylinder is coaxially arranged between the first partition plate and the second partition plate; one end of the first piston rod is coaxially arranged in the connecting cylinder, and the other end is arranged through the connecting cylinder and fixedly connected with the first partition plate; one end of the second piston rod is coaxially arranged in the connecting cylinder, and the other end is arranged through the connecting cylinder and fixedly connected with the second partition plate.

[0018] By adopting the above technical scheme, in the process of cleaning the filtering medium, when the tank body is inverted, the first piston rod slides downward under the gravity of the first partition plate, at the same time, the connecting cylinder also slides downward, so that the distance between the first partition plate and the second partition plate is increased, and the distance between the first partition plate and the second partition plate is adjusted by using the gravity of the first partition plate itself.

[0019] In the process of cleaning the filtering medium, the rudder works, so that the tank body is in a reciprocating swing state; since the distance between the first partition plate and the second partition plate is increased, the filtering medium will be shaken when the tank body swings, so that the filtering medium is in a moving state; at this time, the clean water can more easily separate the impurities from the filtering medium when washing the filtering medium, thereby improving the washing efficiency of the filtering medium.

[0020] Optionally, a scraping and stirring assembly is arranged in the tank body, the scraping and stirring assembly is provided with three groups and corresponds to the filtering assembly one by one, the scraping and stirring assembly comprises a first adjusting cylinder, a second adjusting cylinder, a first scraper and a second scraper; the first adjusting cylinder is sleeved on the first piston rod and rotationally connected with the first piston rod; the second adjusting cylinder is sleeved on the second piston rod and rotationally connected with the second piston rod; a spiral protrusion is fixedly arranged on the connecting cylinder; spiral limiting grooves are arranged on the first adjusting cylinder and the second adjusting cylinder, and the spiral protrusion is matched with the spiral limiting grooves; a plurality of first scrapers and a plurality of second scrapers are circumferentially arranged on the tank body, and are located between the first partition plate and the second partition plate; the first scraper is fixedly connected with the first adjusting cylinder, and the first scraper abuts against the first partition plate; the second scraper is fixedly connected with the second adjusting cylinder, and the second scraper abuts against the second partition plate; a limiting assembly is arranged on the connecting cylinder, and the limiting assembly is used for limiting the connecting cylinder and the first piston rod, so that the connecting cylinder and the first piston rod can only slide along the axial direction of the second piston rod.

[0021] By adopting the technical scheme, in the process of cleaning the filter medium, under the action of the limiting assembly, the connecting cylinder and the first piston rod can only slide along the axis direction of the second piston rod and cannot rotate, so that when the tank body is in the swing state, the height of the first baffle relative to the height of the second baffle will continuously change, the first baffle will drive the first piston rod and the connecting cylinder to slide relatively, the first piston rod will drive the first adjusting cylinder and the connecting cylinder to slide relatively, under the action of the spiral protrusion and the spiral limiting groove, when the first adjusting cylinder slides relatively with the connecting cylinder, the first adjusting cylinder will drive the first scraper and the connecting cylinder to rotate relatively. And when the tank body is in the swing state, the connecting cylinder will also slide relatively with the second piston rod, under the action of the spiral protrusion and the spiral limiting groove, when the connecting cylinder slides relatively with the second piston rod, the connecting cylinder will drive the second scraper and the connecting cylinder to rotate relatively, when the first scraper and the second scraper rotate, not only can the first baffle and the second baffle be scraped to avoid that the filter holes on the first baffle and the second baffle are blocked by the filter medium, but also the filter medium can be stirred, so that the filter medium can be washed clean by the clean water, and the cleaning efficiency of the filter medium is improved.

[0022] Optionally, the tank body is provided with a detection assembly, the detection assembly comprising a first pressure sensor, a second pressure sensor and a controller; the first pressure sensor is fixedly arranged in the water inlet pipe, and is used for detecting water pressure information in the water inlet pipe and converting the water pressure information into a water pressure signal input to the controller; the second pressure sensor is fixedly arranged in the water outlet pipe, and is used for detecting water pressure information in the water outlet pipe and converting the water pressure information into a water pressure signal input to the controller; the controller is fixedly arranged on the support, and is electrically connected with the first pressure sensor, the second pressure sensor, the first electric valve, the second electric valve, the third electric valve, the fourth electric valve and the rudder machine; the controller is used for receiving pressure signals detected by the first pressure sensor and the second pressure sensor, and controlling working states of the first electric valve, the second electric valve, the third electric valve, the fourth electric valve and the rudder machine.

[0023] By adopting the technical scheme, in the process of filtering and treating sewage, the first pressure sensor and the second pressure sensor are always in working state, and the water pressure information of the water inlet pipe and the water outlet pipe is monitored in real time, when the pressure in the water inlet pipe is greater than the pressure in the water outlet pipe and greater than the preset value, it indicates that a certain amount of impurities is attached to the filter medium, which affects the flow of sewage and the filtering effect of impurities in the sewage, at this time, the controller controls the first electric valve and the third electric valve to be closed, and the second electric valve and the fourth electric valve to be opened, and the rudder starts to drive the tank to rotate and invert, realizing the automation of cleaning the filter medium, so that the filter medium can be cleaned in time, and the removal effect of impurities in the filter medium is ensured.

[0024] Optionally, a sliding groove is formed in the inner side wall of the connecting cylinder, and the length direction of the sliding groove is parallel to the length direction of the second piston rod; the limiting component includes a first sliding block and a second sliding block, the first sliding block is fixedly arranged on the first piston rod, and the second sliding block is fixedly arranged on the second piston rod; the first sliding block and the second sliding block are both slidingly arranged in the sliding groove.

[0025] By adopting the above technical scheme, the first sliding block, the second sliding block and the sliding groove are used to limit the connecting cylinder and the first piston rod, so that the connecting cylinder and the first piston rod can only slide along the axis direction of the second piston rod.

[0026] Optionally, the thickness of the tank bottom wall gradually decreases in the direction close to the water outlet pipe; and the thickness of the tank top wall gradually decreases in the direction close to the blowdown pipe.

[0027] By adopting the above technical scheme, through the special shape of the tank bottom wall, the sewage can be more conveniently discharged from the tank after filtering treatment, and residual sewage in the tank is avoided; through the special shape of the tank top wall, the water after cleaning the filter medium and the impurities washed from the filter medium can be more conveniently discharged from the tank, so that the cleaning efficiency of the filter medium is improved.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. By arranging the adjusting component, when the filter medium is cleaned, the distance between the first baffle and the second baffle is adjusted by the adjusting component, so that the distance between the first baffle and the second baffle is increased, the pressure of the filter medium between the first baffle and the second baffle is reduced, the arrangement of the filter medium particles becomes sparse, the impurities attached to the filter medium can be more easily separated from the filter medium and discharged, and the cleaning efficiency of the filter medium is improved;

[0030] 2. By setting the flushing assembly, backwashing of the filter medium is realized, that is, after the clean water enters the tank body, the filter medium with the smallest particle size is cleaned first, and then the filter medium with larger particle size is cleaned. After the water is flushed against the filter medium with the smallest particle size, the impurities with smaller particle size can more easily pass through the filter medium with larger particle size, thereby improving the flushing efficiency of the filter medium;

[0031] 3. By setting the rudder, during the cleaning process of the filter medium, the rudder works to make the tank body in a reciprocating swing state. Since the distance between the first partition plate and the second partition plate increases, the tank body will shake the filter medium when swinging, so that the filter medium is in a moving state. At this time, the clean water can more easily separate the impurities from the filter medium when flushing the filter medium, thereby improving the flushing efficiency of the filter medium;

[0032] 4. By setting the scraping and stirring assembly, during the cleaning process of the filter medium, the first scraper and the second scraper will rotate relative to the connecting barrel, which can not only scrape the first partition plate and the second partition plate to avoid the filter holes on the first partition plate and the second partition plate being blocked by the filter medium, but also stir the filter medium, thereby facilitating the clean water to flush the filter medium clean, and improving the cleaning efficiency of the filter medium. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic diagram of the embodiment of the application;

[0034] Figure 2 is a sectional view of the embodiment of the application;

[0035] Figure 3 is Figure 2 is a local enlarged view of A in FIG. 4;

[0036] Figure 4 is a local enlarged view of the spiral protrusion of the embodiment of the application.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1, support;

[0039] 2, tank body; 21, water inlet pipe; 211, first electric valve; 22, water outlet pipe; 221, third electric valve;

[0040] 3, filter assembly; 31, first partition plate; 311, filter hole; 32, second partition plate; 33, filter medium;

[0041] 4, flushing assembly; 41, flushing pipe; 411, second electric valve; 42, blowdown pipe; 421, fourth electric valve; 43, rudder;

[0042] 5. Adjusting assembly; 51. Connecting cylinder; 511. Slide groove; 512. Spiral protrusion; 52. First piston rod; 53. Second piston rod;

[0043] 6. Scraping and stirring assembly; 61. First adjusting cylinder; 611. Spiral limiting groove; 62. Second adjusting cylinder; 63. First scraper; 64. Second scraper;

[0044] 7. Limiting component; 71. First slider; 72. Second slider;

[0045] 8. Detection components; 81. First pressure sensor; 82. Second pressure sensor; 83. Controller. Detailed Implementation

[0046] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0047] This application discloses a multi-media filter for water treatment. (Refer to...) Figure 1 and Figure 2 The water treatment multi-media filter includes a support frame 1, a tank 2, and a flushing assembly 4. The tank 2 is a cylindrical structure, vertically positioned and rotatably connected to the support frame 1. The rotation axes of the tank 2 and the support frame 1 are horizontally aligned. A water outlet pipe 22 is coaxially mounted at the bottom of the tank 2, communicating with the interior of the tank 2. The thickness of the bottom wall of the tank 2 gradually decreases towards the water outlet pipe 22. A third electric valve 221 is fixedly installed on the water outlet pipe 22. The water outlet pipe 22 is connected to a subsequent wastewater treatment station via a flexible hose.

[0048] The flushing assembly 4 includes a flushing pipe 41, a drain pipe 42, and a servo motor 43. The flushing pipe 41 is located at the bottom of the tank 2 and is connected to the outlet pipe 22. The flushing pipe 41 is also connected to the interior of the tank 2 via the outlet pipe 22. An external water source is connected to the flushing pipe 41 via a flexible hose. A pressure pump is installed on the flushing pipe 41 to ensure that the water entering the tank 2 from the flushing pipe 41 has a certain flushing force. The drain pipe 42 is coaxially mounted on the top of the tank 2 and is connected to the interior of the tank 2. The thickness of the top wall of the tank 2 gradually decreases towards the drain pipe 42. A second electric valve 411 is fixedly installed on the flushing pipe 41, and a fourth electric valve 421 is fixedly installed on the drain pipe 42. The drain pipe 42 is connected to a sewage collection tank via a flexible hose. The servo motor 43 is fixedly mounted on the bracket 1, with its output shaft horizontally positioned. The tank 2 is fixedly connected to the output shaft of the servo motor 43.

[0049] A water inlet pipe 21 is connected to the sewage pipe 42. The water inlet pipe 21 is connected to the inside of the tank 2 through the sewage pipe 42. A first electric valve 211 is fixedly installed on the water inlet pipe 21.

[0050] Reference Figure 2The inside of the tank body 2 is provided with three groups of filter assemblies 3 which are uniformly arranged along the axial direction of the tank body 2. The filter assembly 3 comprises a first baffle 31, a second baffle 32 and a filter medium 33. The first baffle 31 and the second baffle 32 are coaxially arranged inside the tank body 2, the side walls of the first baffle 31 and the second baffle 32 abut against the inner side wall of the tank body 2, the first baffle 31 is located on top of the second baffle 32, and a plurality of filter holes 311 are formed in the first baffle 31 and the second baffle 32. The second baffle 32 is fixedly connected to the inner side wall of the tank body 2. The filter medium 33 is arranged between the first baffle 31 and the second baffle 32, and the filter medium 33 in the three groups of filter assemblies 3 from top to bottom is gravel with the largest particle size, anthracite with a slightly larger particle size and quartz sand with the smallest particle size.

[0051] It should be noted that in each group of filter assemblies 3, the pore size of the filter holes 311 on the first baffle 31 and the second baffle 32 is slightly smaller than the particle size of the corresponding filter medium 33, so as to prevent the filter medium 33 from leaking out of the filter holes 311. The first baffle 31 should be made of a material with a relatively high density, and the first baffle 31 exerts pressure on the filter medium 33 by gravity, so that the filter medium 33 is placed compactly, thereby ensuring the removal effect of impurities in the sewage.

[0052] When filtering and treating sewage, the first electric valve 211 and the third electric valve 221 are opened, and the second electric valve 411 and the fourth electric valve 421 are closed. The sewage to be treated is transported into the tank body 2 through the water inlet pipe 21, and then flows downward under the action of its own gravity. The sewage flows into the space between the first baffle 31 and the second baffle 32 through the filter holes 311 on the first baffle 31. The suspended solids, colloids and other impurities in the sewage adhere to the surface of the filter medium 33, and the remaining sewage flows out of the filter holes 311 on the second baffle 32 and continues to flow downward. After the sewage passes through the three filter media 33 with different particle sizes, the larger particles of impurities in the sewage are removed at the top of the tank body 2, and the smaller particles are removed at the bottom of the tank body 2.

[0053] The detection assembly 8 is arranged on the tank body 2, and the detection assembly 8 comprises a first pressure sensor 81, a second pressure sensor 82 and a controller 83. The first pressure sensor 81 is fixedly arranged on the inner side wall of the water inlet pipe 21, and the first pressure sensor 81 is used for detecting the water pressure information in the water inlet pipe 21 and converting the water pressure information into a water pressure signal input to the controller 83. The second pressure sensor 82 is fixedly arranged on the inner side wall of the water outlet pipe 22, and the second pressure sensor 82 is used for detecting the water pressure information in the water outlet pipe 22 and converting the water pressure information into a water pressure signal input to the controller 83. The controller 83 is fixedly arranged on the support 1, and the controller 83 is electrically connected with the first pressure sensor 81, the second pressure sensor 82, the first electric valve 211, the second electric valve 411, the third electric valve 221, the fourth electric valve 421 and the rudder 43. The controller 83 is used for receiving the pressure signals detected by the first pressure sensor 81 and the second pressure sensor 82, comparing the water pressure information in the water inlet pipe 21 with the water pressure information in the water outlet pipe 22, and controlling the first electric valve 211, the second electric valve 411, the third electric valve 221, the fourth electric valve 421 and the rudder 43 to work when the pressure in the water inlet pipe 21 is greater than the pressure in the water outlet pipe 22 and greater than a preset value.

[0054] During the sewage filtering treatment process, the first pressure sensor 81 and the second pressure sensor 82 are always in a working state. The first pressure sensor 81 monitors the water pressure information in the water inlet pipe 21 in real time, and the second pressure sensor 82 monitors the water pressure information in the water outlet pipe 22 in real time. When the pressure in the water inlet pipe 21 is greater than the pressure in the water outlet pipe 22 and greater than a preset value, it indicates that a certain amount of impurities is attached to the filtering medium 33, which affects the flow of sewage and the filtering effect of impurities in the sewage. At this time, the filtering medium 33 needs to be cleaned.

[0055] When the filtering medium 33 is cleaned, the controller 83 controls the first electric valve 211 and the third electric valve 221 to be closed, the second electric valve 411 and the fourth electric valve 421 to be opened, and the rudder 43 to be started. The rudder 43 drives the tank body 2 to rotate, so that the tank body 2 is inverted. At the same time, the clean water flows into the tank body 2 from the flushing pipe 41, and then flows into the space between the first partition plate 31 and the second partition plate 32 through the filter holes 311 on the second partition plate 32, so as to clean the impurities attached to the surface of the filtering medium 33 and carry the impurities to flow out of the filter holes 311 on the first partition plate 31 and continue to flow downward until the three filtering media 33 with different particle sizes are flushed, and then the impurities are discharged through the sewage discharge pipe 42.

[0056] When the tank 2 is inverted, the filter medium 33 at the top of the tank 2 has the smallest particle size and the smallest impurities attached thereto, and the filter medium 33 at the bottom of the tank 2 has the largest particle size and the largest gap between the particles, so that the water can more easily pass through the filter medium 33 at the bottom of the tank 2 after washing the filter medium 33 at the top of the tank 2, and the impurities carried by the clean water after washing the filter medium 33 at the top of the tank 2 are prevented from being intercepted by the filter medium 33 at the bottom of the tank 2, thereby facilitating cleaning of the filter medium 33.

[0057] With reference to Figure 2 and Figure 3 The tank 2 is provided with an adjusting assembly 5, which is provided in three sets and corresponds to the filter assembly 3 one by one. The adjusting assembly 5 comprises a connecting cylinder 51, a first piston rod 52 and a second piston rod 53. The connecting cylinder 51 is coaxially arranged between the first partition plate 31 and the second partition plate 32. The first piston rod 52 and the second piston rod 53 are coaxially arranged with the connecting cylinder 51. The piston end of the first piston rod 52 is located in the connecting cylinder 51 and abuts against the inner side wall of the connecting cylinder 51. The rod end of the first piston rod 52 penetrates the top of the connecting cylinder 51 and is fixedly connected with the first partition plate 31. The piston end of the second piston rod 53 is located in the connecting cylinder 51 and abuts against the inner side wall of the connecting cylinder 51. The rod end of the second piston rod 53 penetrates the bottom of the connecting cylinder 51 and is fixedly connected with the second partition plate 32.

[0058] Four sliding grooves 511 are uniformly formed on the inner side wall of the connecting cylinder 51 along the circumferential direction of the connecting cylinder 51. The length direction of the sliding groove 511 is the same as the axis direction of the connecting cylinder 51. Four sets of limiting assemblies 7 are arranged on the connecting cylinder 51, and the limiting assemblies 7 correspond to the sliding grooves 511 one by one. The limiting assemblies 7 comprise a first sliding block 71 and a second sliding block 72. The first sliding block 71 is fixedly arranged on the piston end of the first piston rod 52, and the second sliding block 72 is fixedly arranged on the piston end of the second piston rod 53. The first sliding block 71 and the second sliding block 72 are slidingly arranged in the sliding groove 511, and the sliding direction is the same as the length direction of the sliding groove 511.

[0059] In the process of cleaning the filter medium 33, when the steering wheel 43 drives the tank 2 to rotate, the tank 2 is inverted, the height of the first partition plate 31 is changed to be lower than the second partition plate 32, under the action of gravity of the first partition plate 31, the first piston rod 52 and the first sliding block 71 are driven to slide downward along the sliding groove 511, at the same time, the connecting barrel 51 also slides downward under the action of gravity of itself and the first partition plate 31, so that the distance between the first partition plate 31 and the second partition plate 32 is increased, and because the pressure of the first partition plate 31 is lost, the arrangement between the particles of the filter medium 33 becomes sparse. And when the tank 2 rotates, the filter medium 33 also falls downward, so that the arrangement between the particles of the filter medium 33 is more sparse. In the process of cleaning the filter medium 33, the controller 83 controls the steering wheel 43 to work, so that the tank 2 is in a reciprocating swing state, because the distance between the first partition plate 31 and the second partition plate 32 is increased, the tank 2 will shake the filter medium 33 when it swings, so that the filter medium 33 is in a moving state, at this time, when the clean water washes the filter medium 33, it can more easily separate the impurities from the filter medium 33, so as to facilitate cleaning the filter medium 33.

[0060] With reference to Figure 3 and Figure 4 The tank 2 is internally provided with three scraping and stirring assemblies 6, the scraping and stirring assemblies 6 are in one-to-one correspondence with the filter assemblies 3, and each scraping and stirring assembly 6 comprises a first adjusting barrel 61, a second adjusting barrel 62, a first scraping plate 63 and a second scraping plate 64. The first adjusting barrel 61 is coaxially sleeved on the rod end of the first piston rod 52, and the first adjusting barrel 61 is rotationally connected with the first piston rod 52, and the rotational axis direction is the same as the axis direction of the first piston rod 52. The second adjusting barrel 62 is coaxially sleeved on the rod end of the second piston rod 53, and the second adjusting barrel 62 is rotationally connected with the second piston rod 53, and the rotational axis direction is the same as the axis direction of the second piston rod 53. The first adjusting barrel 61 and the second adjusting barrel 62 are both penetrated on the connecting barrel 51. The connecting barrel 51 is fixedly provided with a spiral protrusion 512. The outer side wall of the first adjusting barrel 61 and the outer side wall of the second adjusting barrel 62 are both provided with a spiral limiting groove 611, and the spiral protrusion 512 is matched with the spiral limiting groove 611.

[0061] The first scraping plate 63 and the second scraping plate 64 are both uniformly provided with a plurality of scraping plates along the circumference of the tank 2, the first scraping plate 63 and the second scraping plate 64 are located between the first partition plate 31 and the second partition plate 32, the first scraping plate 63 is fixedly connected with the outer side wall of the first adjusting barrel 61, and the first scraping plate 63 abuts against the first partition plate 31. The second scraping plate 64 is fixedly connected with the outer side wall of the second adjusting barrel 62, and the second scraping plate 64 abuts against the second partition plate 32.

[0062] In the process of cleaning the filter medium 33, when the tank 2 is in the swing state, the height of the first partition plate 31 relative to the height of the second partition plate 32 will continuously change, that is, when the height of the first partition plate 31 changes from being higher than the second partition plate 32 to being lower than the second partition plate 32, or from being lower than the second partition plate 32 to being higher than the second partition plate 32, the first piston rod 52 and the first sliding block 71 will slide relative to the connecting barrel 51 along the length direction of the sliding groove 511, the first piston rod 52 will drive the first adjusting barrel 61 to slide relative to the connecting barrel 51, and under the action of the spiral protrusion 512 and the spiral limiting groove 611, the first adjusting barrel 61 will drive the first scraper 63 to rotate relative to the connecting barrel 51 when the first adjusting barrel 61 slides relative to the connecting barrel 51, and the first scraper 63 can not only scrape the first partition plate 31 to avoid the filter holes 311 on the first partition plate 31 being blocked by the filter medium 33, but also can stir the filter medium 33, so that the filter medium 33 can be easily washed clean by the clean water.

[0063] When the height of the first partition plate 31 changes from being higher than the second partition plate 32 to being lower than the second partition plate 32, or from being lower than the second partition plate 32 to being higher than the second partition plate 32, the connecting barrel 51 will also slide relative to the second piston rod 53, and since the second adjusting barrel 62 is rotationally connected with the second piston rod 53, the relative sliding between the connecting barrel 51 and the second piston rod 53 is equivalent to the relative sliding between the connecting barrel 51 and the second adjusting barrel 62, and under the action of the spiral protrusion 512 and the spiral limiting groove 611, when the connecting barrel 51 slides relative to the second adjusting barrel 62, the second scraper 64 will rotate relative to the connecting barrel 51, and the second scraper 64 can not only scrape the second partition plate 32 to avoid the filter holes 311 on the second partition plate 32 being blocked by the filter medium 33, but also can stir the filter medium 33, so that the filter medium 33 can be easily washed clean by the clean water.

[0064] The implementation principle of the water treatment multi-medium filter according to the embodiment of the present application is as follows:

[0065] When the sewage is filtered and treated, the first electric valve 211 and the third electric valve 221 are opened, the second electric valve 411 and the fourth electric valve 421 are closed, the sewage to be treated is transported into the tank 2 through the water inlet pipe 21, and then flows into the space between the first partition plate 31 and the second partition plate 32 through the filter holes 311 on the first partition plate 31, the suspended solids, colloids and other impurities in the sewage adhere to the surface of the filter medium 33, and the remaining sewage flows out from the filter holes 311 on the second partition plate 32 and continues to flow downward, until the sewage passes through the three kinds of filter medium 33 with different particle sizes, the larger particles of impurities in the sewage are removed at the top of the tank 2, and the smaller particles are removed at the bottom of the tank 2, and finally discharged through the water outlet pipe 22 to the subsequent sewage treatment station for further treatment, thereby completing the filtration treatment of the sewage.

[0066] In the process of filtering sewage, the first pressure sensor 81 and the second pressure sensor 82 are always in working state, and the water pressure information in the water inlet pipe 21 and the water pressure information in the water outlet pipe 22 are monitored in real time. When the pressure in the water inlet pipe 21 is greater than the pressure in the water outlet pipe 22, and greater than the preset value, the controller 83 controls the first electric valve 211 and the third electric valve 221 to close, and the second electric valve 411 and the fourth electric valve 421 to open, and the steering wheel 43 starts, and the steering wheel 43 drives the tank 2 to rotate, so that the tank 2 is inverted, and the clean water flows into the tank 2 from the flushing pipe 41, and then flows into the space between the first partition plate 31 and the second partition plate 32 through the filter holes 311 on the second partition plate 32, and the impurities attached to the surface of the filter medium 33 are washed, and the impurities are carried out from the filter holes 311 on the first partition plate 31 and continue to flow downward, until the three kinds of filter media 33 with different particle sizes are washed, and then discharged to the sewage treatment tank through the sewage pipe 42.

[0067] In the process of washing the filter medium 33, after the tank 2 is inverted, the height of the first partition plate 31 is lower than that of the second partition plate 32, and the first partition plate 31 drives the first piston rod 52 and the first sliding block 71 to slide downward along the sliding groove 511, and at the same time, the connecting barrel 51 also slides downward, so that the distance between the first partition plate 31 and the second partition plate 32 increases, and the arrangement between the filter medium 33 particles becomes sparse due to the loss of the pressure of the first partition plate 31. When the tank 2 rotates, the filter medium 33 also falls downward, so that the arrangement between the filter medium 33 particles becomes more sparse. In the process of washing the filter medium 33, the controller 83 controls the steering wheel 43 to work, so that the tank 2 is in a reciprocating swing state. Since the distance between the first partition plate 31 and the second partition plate 32 increases, the tank 2 will shake the filter medium 33 when it swings, so that the filter medium 33 is in a moving state. At this time, when the clean water washes the filter medium 33, the impurities can be more easily separated from the filter medium 33, so that the filter medium 33 can be easily washed clean.

[0068] In the process of cleaning the filter medium 33, when the tank body 2 is in the swing state, the height of the first partition plate 31 relative to the height of the second partition plate 32 will continue to change, the first partition plate 31 will drive the first piston rod 52 and the first sliding block 71 to slide along the length direction of the sliding groove 511 relative to the connecting barrel 51, and the first piston rod 52 will drive the first adjusting barrel 61 to slide relative to the connecting barrel 51. Under the action of the spiral protrusion 512 and the spiral limiting groove 611, when the first adjusting barrel 61 slides relative to the connecting barrel 51, the first adjusting barrel 61 will drive the first scraper 63 to rotate relative to the connecting barrel 51. When the first scraper 63 rotates, it can not only scrape the first partition plate 31 to avoid the filter holes 311 on the first partition plate 31 being blocked by the filter medium 33, but also can stir the filter medium 33, so that the clean water can wash the filter medium 33 clean.

[0069] The height of the first partition plate 31 relative to the height of the second partition plate 32 will continue to change, and the connecting barrel 51 will also slide relative to the second piston rod 53. Since the second adjusting barrel 62 is rotationally connected with the second piston rod 53, when the connecting barrel 51 slides relative to the second piston rod 53, it is equivalent to that the connecting barrel 51 slides relative to the second adjusting barrel 62. Under the action of the spiral protrusion 512 and the spiral limiting groove 611, when the connecting barrel 51 slides relative to the second adjusting barrel 62, it will drive the second scraper 64 to rotate relative to the connecting barrel 51. When the second scraper 64 rotates, it can not only scrape the second partition plate 32 to avoid the filter holes 311 on the second partition plate 32 being blocked by the filter medium 33, but also can stir the filter medium 33, so that the clean water can wash the filter medium 33 clean.

[0070] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A water treatment multi-media filter characterized by: The utility model provides a filter device, including support (1), tank body (2), filter assembly (3), flush assembly (4) and adjusting assembly (5), tank body (2) vertical setting is in support (1), tank body (2) top intercommunication is provided with water inlet pipe (21), tank body (2) bottom intercommunication is provided with water outlet pipe (22), filter assembly (3) is set up in tank body (2) inside, filter assembly (3) is provided with three groups, and along vertical direction is set up, filter assembly (3) includes first baffle (31), second baffle (32) and filter medium (33), first baffle (31) and second baffle (32) are coaxial and are set up in tank body (2) inside, first baffle (31) and second baffle (32) all are seted up filter hole (311), filter medium (33) is located between first baffle (31) and second baffle (32), three filter medium (33) gradually increase along the direction of the filter precision of approaching tank body (2) bottom, flush assembly (4) is set up on tank body (2), flush assembly (4) is used for washing filter medium (33), adjusting assembly (5) is set up on tank body (2), adjusting assembly (5) is used for adjusting the distance between first baffle (31) and second baffle (32), Wherein, the flush assembly (4) includes flush pipe (41) and blowdown pipe (42);The flush pipe (41) is communicated with the bottom of the tank body (2), the blowdown pipe (42) is communicated with the top of the tank body (2); The tank body (2) is rotatably connected with the support (1), and the rotation axis is horizontally arranged;The flush assembly (4) further includes a steering gear (43), the steering gear (43) is fixedly arranged on the support (1), and the steering gear (43) is used to drive the tank body (2) to rotate; The first baffle (31) is located on the top of the second baffle (32);The second baffle (32) is fixedly connected with the tank body (2);The adjusting assembly (5) is provided with three groups, and corresponds to the filter assembly (3) one by one, the adjusting assembly (5) includes a connecting barrel (51), a first piston rod (52) and a second piston rod (53);The connecting barrel (51) is coaxially arranged between the first baffle (31) and the second baffle (32);One end of the first piston rod (52) is coaxially arranged in the connecting barrel (51), the other end is arranged on the connecting barrel (51), and is fixedly connected with the first baffle (31);One end of the second piston rod (53) is coaxially arranged in the connecting barrel (51), the other end is arranged on the connecting barrel (51), and is fixedly connected with the second baffle (32).

2. The water treatment multi-media filter of claim 1, wherein: The first electric valve (211) is installed on the water inlet pipe (21), and the third electric valve (221) is installed on the water outlet pipe (22);The second electric valve (411) is installed on the flush pipe (41), and the fourth electric valve (421) is installed on the blowdown pipe (42).

3. The water treatment multi-media filter of claim 1, wherein: The tank body (2) is provided with a scraping stirring assembly (6), the scraping stirring assembly (6) is provided with three groups, and is one-to-one corresponding with the filtering assembly (3), the scraping stirring assembly (6) includes a first adjusting cylinder (61), a second adjusting cylinder (62), a first scraper (63) and a second scraper (64); the first adjusting cylinder (61) is sleeved on the first piston rod (52), and is rotationally connected with the first piston rod (52); the second adjusting cylinder (62) is sleeved on the second piston rod (53), and is rotationally connected with the second piston rod (53); the connecting cylinder (51) is fixedly provided with a spiral protrusion (512); the first adjusting cylinder (61) and the second adjusting cylinder (62) are both provided with a spiral limiting groove (611), and the spiral protrusion (512) is matched with the spiral limiting groove (611); the first scraper (63) and the second scraper (64) are both circumferentially provided with a plurality of first scrapers (63), and are both located between the first baffle (31) and the second baffle (32), the first scraper (63) is fixedly connected with the first adjusting cylinder (61), and the first scraper (63) is abutted with the first baffle (31); the second scraper (64) is fixedly connected with the second adjusting cylinder (62), and the second scraper (64) is abutted with the second baffle (32); the connecting cylinder (51) is provided with a limiting assembly (7), the limiting assembly (7) is used for limiting the connecting cylinder (51) and the first piston rod (52), so that the connecting cylinder (51) and the first piston rod (52) can only slide along the axis direction of the second piston rod (53).

4. The water treatment multi-media filter of claim 2, wherein: The detection assembly (8) is arranged on the tank body (2), and the detection assembly (8) comprises a first pressure sensor (81), a second pressure sensor (82) and a controller (83); the first pressure sensor (81) is fixedly arranged in the water inlet pipe (21), the first pressure sensor (81) is used for detecting the water pressure information in the water inlet pipe (21), and is converted into a water pressure signal input into the controller (83); the second pressure sensor (82) is fixedly arranged in the water outlet pipe (22), the second pressure sensor (82) is used for detecting the water pressure information in the water outlet pipe (22), and is converted into a water pressure signal input into the controller (83); the controller (83) is fixedly arranged on the support (1), the controller (83) is electrically connected with the first pressure sensor (81), the second pressure sensor (82), the first electric valve (211), the second electric valve (411), the third electric valve (221), the fourth electric valve (421) and the rudder (43), the controller (83) is used for receiving the pressure signals detected by the first pressure sensor (81) and the second pressure sensor (82), and controlling the working states of the first electric valve (211), the second electric valve (411), the third electric valve (221), the fourth electric valve (421) and the rudder (43).

5. The water treatment multi-media filter of claim 3, wherein: A sliding groove (511) is arranged on the inner side wall of the connecting cylinder (51), and the length direction of the sliding groove (511) is parallel to the length direction of the second piston rod (53); the limiting assembly (7) comprises a first sliding block (71) and a second sliding block (72), the first sliding block (71) is fixedly arranged on the first piston rod (52), the second sliding block (72) is fixedly arranged on the second piston rod (53), and the first sliding block (71) and the second sliding block (72) are slidingly arranged in the sliding groove (511).

6. The water treatment multi-media filter of claim 1, wherein: The bottom wall of the tank body (2) gradually decreases in thickness along the direction close to the water outlet pipe (22); and the top wall of the tank body (2) gradually decreases in thickness along the direction close to the blowdown pipe (42).

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