A filter device with self-cleaning quick-change filter medium

Abstract

The application relates to a filter device with self-cleaning and quick replacement of filter medium, and relates to the technical field of sewage treatment equipment, which comprises a bin body, a water distribution pipe, a first filter medium and a second filter medium, the bin body is provided with a sedimentation cavity, a first filter cavity and a second filter cavity, the first filter medium is arranged in the first filter cavity, the second filter medium is arranged in the second filter cavity, the water inlet end of the water distribution pipe is communicated with the sedimentation cavity, the water outlet end of the water distribution pipe is communicated with the first filter cavity, the water inlet end is located above the water outlet end, the water outlet end is located below the first filter medium, the bin body is provided with an overflow port communicated with the first filter cavity and the second filter cavity, and the overflow port is located above the first filter medium and the second filter medium. Therefore, the sewage is well filtered and purified, and the sewage filtering and purifying efficiency is effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment equipment, and in particular to a filter device with self-cleaning and quick-replacement filter media. Background Technology

[0002] The quantity and quality of sewage in rural or urban areas change constantly over time. In order to improve the working conditions of sewage treatment systems, it is necessary to perform initial filtration on rural or urban sewage. After initial filtration, the sewage still needs to be further filtered and purified through a filtration device to separate clean water that can be discharged. For example, existing technology discloses a multi-stage filtration rainwater inlet device for municipal engineering, including an inlet pipe connected to a rainwater pipe, a vertical filter pipe connected to the inlet pipe on the top left, a discharge pipe connected to the right side of the middle of the vertical filter pipe, a sedimentation pipe connected to the bottom of the vertical filter pipe, and a multi-stage filter pipe connected to the right side of the bottom of the sedimentation pipe; wherein, the vertical filter pipe has a vertically continuous structure, and a filter basket that can move up and down is provided inside the vertical filter pipe at the discharge pipe, and a baffle plate is provided on the right side of the filter basket to prevent water from flowing into the discharge pipe; the multi-stage filter pipe has a horizontally continuous structure, and the multi-stage filter pipe is provided with a gravel mesh frame, a coarse sand mesh frame, and a cotton cloth mesh frame from left to right, and rainwater flows through the filter basket, the gravel mesh frame, the coarse sand mesh frame and the cotton cloth mesh frame in sequence for filtration and purification.

[0003] However, the above-mentioned multi-stage filtration rainwater inlet device has the following shortcomings: Because the vertical filter pipe has a vertical through-structure, when rainwater flows through the filter basket, impurities in the rainwater easily fall through the mesh of the filter basket under gravity, which is not conducive to rainwater filtration and purification. Furthermore, the accumulation of sediment in the filter basket easily clogs the mesh, affecting rainwater flow and requiring frequent cleaning, thus affecting the rainwater filtration efficiency. Additionally, because the multi-stage filter pipe has a horizontal through-structure (i.e., the gravel mesh frame, coarse sand mesh frame, and cotton cloth mesh frame are installed vertically), impurities in the rainwater do not easily adhere to these frames. The impurities in the rainwater easily accumulate inside the multi-stage filter pipe and are difficult to clean, which will seriously affect the filtration and purification effect over time. Summary of the Invention

[0004] The purpose of this application is to provide a filtration device with self-cleaning and quick-replacement filter media, which solves the problems of poor filtration effect and low filtration efficiency in existing multi-stage filtration rainwater inlet devices.

[0005] The filtration device with self-cleaning and quick-replacement filter media provided in this application adopts the following technical solution: A filtration device with self-cleaning and quick-replacement filter media includes a chamber, a water distribution pipe, a first filter media, and a second filter media. The chamber is provided with a sedimentation chamber, a first filter chamber, and a second filter chamber. The first filter media is disposed in the first filter chamber, and the second filter media is disposed in the second filter chamber. The inlet end of the water distribution pipe is connected to the sedimentation chamber, and the outlet end of the water distribution pipe is connected to the first filter chamber. The inlet end is located above the outlet end, and the outlet end is located below the first filter media. The chamber is provided with an overflow port connected to the first filter chamber and the second filter chamber, and the overflow port is located above the first filter media and the second filter media.

[0006] By adopting the above technical solution, the sewage is settled in the sedimentation chamber, then filtered once by the first filter medium, and the sewage after the first filtration enters the second filter chamber through the overflow port for secondary filtration by the second filter medium, thereby significantly improving the filtration and purification effect of the sewage.

[0007] Optionally, the chamber is provided with an air inlet connected to the first filter chamber for introducing compressed air into the first filter chamber.

[0008] By adopting the above technical solution, compressed air can be introduced into the first filter chamber through the air inlet, thereby achieving bubble cleaning and significantly improving the cleaning effect on the first filter medium.

[0009] Optionally, it also includes an agitation mechanism, which includes an agitation drive and two sets of agitation shafts. The two sets of agitation shafts are rotatably disposed in the first filter chamber. Each agitation shaft is provided with an agitation frame. The agitation drive is fixed to the chamber body and is connected to the agitation drive for driving the agitation shafts and the agitation frame to rotate.

[0010] By adopting the above technical solution, the stirring drive can be used to stir the sewage in the first filter chamber, thereby effectively improving the cleaning effect on the first filter medium.

[0011] Optionally, it also includes a first basket, a second basket, and a barrier mesh plate. The first basket is disposed in the first filter chamber and located above the agitator. The first filter medium is placed in the first basket. The second basket is disposed in the second filter chamber and the second filter medium is placed in the second basket. The barrier mesh plate is fixed in the first filter chamber and is located below the agitator and above the outlet end of the water distribution pipe.

[0012] By adopting the above technical solution, the first filter medium is placed in the first basket and the second filter medium is placed in the second basket, which facilitates the cleaning or replacement of the first and second filter media.

[0013] Optionally, it also includes an extrusion mechanism, which includes an extrusion screen and an extrusion drive. The extrusion drive is disposed in the chamber and located above the first filter medium. The first filter medium is a soft material. The extrusion drive is connected to the extrusion screen and is used to drive the extrusion screen to move toward or away from the first filter medium.

[0014] By adopting the above technical solution, the extrusion drive can drive the extrusion mesh plate to repeatedly extrude and clean the first filter medium, thereby achieving a good cleaning effect.

[0015] Optionally, it also includes a backwash pump. The chamber is provided with a backwash inlet connected to the second filter chamber. The backwash pump is connected to the backwash inlet and is used to introduce backwash water into the second filter chamber. The chamber is provided with a drain outlet connected to the second filter chamber. The drain outlet is located below the second filter medium.

[0016] By adopting the above technical solution, backwash water can be introduced into the second filter chamber through the backwash pump, thereby realizing the backwash function, which is beneficial for the reuse of the first and second filter media after cleaning.

[0017] Optionally, the sedimentation chamber is provided with a first buffer water-blocking plate and a second buffer water-blocking plate. The sedimentation chamber is divided into a first buffer sedimentation chamber, a second buffer sedimentation chamber and a third buffer sedimentation chamber by the first buffer water-blocking plate and the second buffer water-blocking plate. The water inlet end of the water distribution pipe is connected to the third buffer sedimentation chamber. The chamber body is provided with a water inlet connected to the first buffer sedimentation chamber.

[0018] By adopting the above technical solution, the sedimentation chamber is divided into a first buffer sedimentation chamber, a second buffer sedimentation chamber, and a third buffer sedimentation chamber by the first buffer baffle and the second buffer baffle, which provides multiple barriers to the pollutants in the sewage, allowing the pollutants in the sewage to settle in different spaces, thereby reducing the workload of the subsequent filter media and improving the filtration effect.

[0019] Optionally, it also includes a first slag discharge mechanism and a second slag discharge mechanism. The first slag discharge mechanism includes a first opening and closing plate, a first slag discharge plate, and a first slag discharge driving component. The second slag discharge mechanism includes a second opening and closing plate, a second slag discharge plate, and a second slag discharge driving component. The first slag discharge plate is rotatably disposed in the first buffer sedimentation chamber. The first slag discharge driving component is drivenly connected to the first slag discharge plate and is used to drive the first slag discharge plate to rotate. The second slag discharge plate is rotatably disposed in the second buffer sedimentation chamber. The second slag discharge driving component is drivenly connected to the second slag discharge plate and is used to drive the second slag discharge plate to rotate. The silo body is provided with a first slag discharge port that communicates with the first buffer sedimentation chamber and the outside of the silo body. The first opening and closing plate is openable and closable at the first slag discharge port. The first buffer water-proof plate is provided with a second slag discharge port that communicates with the first buffer sedimentation chamber and the second buffer sedimentation chamber. The second opening and closing plate is openable and closable at the second slag discharge port.

[0020] By adopting the above technical solution, the first slag discharge drive and the second slag discharge drive can respectively drive the first slag discharge plate and the second slag discharge plate to rotate, thereby discharging the dirt deposited in the first buffer sedimentation chamber and the second buffer sedimentation chamber, thus achieving a good slag discharge effect.

[0021] Optionally, it also includes a first telescopic plate, a second telescopic plate, a telescopic pipe, a first telescopic drive component, a second telescopic drive component, and a third telescopic drive component. The first telescopic plate is slidably disposed on the first buffer water-blocking plate. The first telescopic drive component is drivenly connected to the first telescopic plate and is used to drive the first telescopic plate to telescopically move relative to the first buffer water-blocking plate. The second telescopic plate is slidably disposed on the second buffer water-blocking plate. The second telescopic drive component is drivenly connected to the second telescopic plate and is used to drive the second telescopic plate to telescopically move relative to the second buffer water-blocking plate. The telescopic pipe is slidably disposed on the water distribution pipe. The third telescopic drive component is drivenly connected to the telescopic pipe and is used to drive the telescopic pipe to telescopically move relative to the water distribution pipe.

[0022] By adopting the above technical solution, the first telescopic plate, the second telescopic plate, and the telescopic pipe can be driven to rise and fall respectively by the first telescopic drive component, the second telescopic drive component, and the third telescopic drive component, thereby adapting to sewage at different water levels.

[0023] Optionally, a slag cleaning mechanism is also included. The slag cleaning mechanism includes a lifting plate, a push plate, a push plate drive, an opening and closing door, and a lifting drive. The silo body is provided with a slag cleaning chamber connected to the sedimentation chamber and a slag outlet connected to the slag cleaning chamber. The lifting plate is slidably and vertically disposed in the slag cleaning chamber. The lifting drive is drivenly connected to the lifting plate and is used to drive the lifting plate to move up and down. The push plate is slidably disposed in the slag cleaning chamber. The push plate drive is drivenly connected to the push plate and is used to drive the push plate to move toward or away from the slag outlet. The opening and closing door is slidably disposed at the slag outlet.

[0024] By adopting the above technical solution, the push plate can be driven to move towards the slag outlet by the push plate drive component, and the dirt that falls on the lifting plate can be pushed out of the slag outlet from the slag cleaning chamber, thereby effectively improving the cleaning effect of the deposited dirt.

[0025] In summary, this application includes at least one of the following beneficial technical effects: Wastewater requiring filtration and purification is discharged into a sedimentation chamber, causing suspended solids and other contaminants in the wastewater to settle. After sedimentation, the upper clear liquid in the wastewater flows into the first filtration chamber through a water distribution pipe. The wastewater then undergoes primary filtration through the first filter medium. Since the outlet of the water distribution pipe is located below the first filter medium, most of the contaminants in the wastewater entering the first filtration chamber can be deposited at the bottom of the first filtration chamber without adhering to the first filter medium, thereby reducing the amount of contaminants passing through the first filter medium and effectively improving the filtration effect. After filtration through the first filter medium, the wastewater flows into the second filtration chamber through an overflow port and undergoes secondary filtration through the second filter medium, thus achieving a good filtration and purification effect. Since the overflow port is located above the first and second filter media, contaminants in the wastewater flowing into the second filtration chamber from the overflow port can be deposited on the upper surface of the second filter medium, allowing for rapid cleaning of the contaminants on the upper surface of the second filter medium, thereby effectively improving the wastewater filtration and purification efficiency. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram from a first perspective of Embodiment 1 after omitting the first and second filter media in this application. Figure 2 This is a cross-sectional view of Embodiment 1 from a second perspective, omitting the first and second filter media in this application. Figure 3 This is a cross-sectional view from a third perspective of Embodiment 1 after omitting the first and second filter media in this application. Figure 4 This is a cross-sectional view from a fourth perspective of Embodiment 1 after omitting the first and second filter media in this application. Figure 5 for Figure 4 A magnified view of part A in the middle; Figure 6 This is a structural schematic diagram from a fifth perspective of Embodiment 1 after omitting the first and second filter media in this application. Figure 7 for Figure 6 A magnified view of part B in the middle section; Figure 8 This is a cross-sectional view from a sixth perspective of Embodiment 1 after omitting the first and second filter media in this application. Figure 9 This is a schematic diagram of the structure of Embodiment 2 from a first perspective after omitting the first and second filter media in this application; Figure 10 This is a structural schematic diagram from a second perspective of Embodiment 2 after omitting the first and second filter media in this application; Figure 11 This is a structural schematic diagram from a third perspective of Embodiment 2 after omitting the first and second filter media in this application; Figure 12 This is a cross-sectional view from a fourth perspective of Embodiment 2 after omitting the first and second filter media in this application. Figure 13 for Figure 12 A magnified view of part C in the diagram.

[0027] In the picture, 10. Tank body; 11. Sedimentation chamber; 111. First buffer baffle plate; 112. Second buffer baffle plate; 113. First buffer sedimentation chamber; 114. Second buffer sedimentation chamber; 115. Third buffer sedimentation chamber; 116. Water inlet; 117. First slag discharge port; 118. Second slag discharge port; 12. First filter chamber; 121. Air inlet; 122. First sewage discharge port; 123. First boss; 13. Second filter chamber; 131. Backwash water inlet; 132. Drainage port; 133. Second boss; 14. Overflow port; 15. Viewing window; 16. Slag cleaning chamber; 161. Slag outlet; 17. Guide sleeve; 18. First limiting plate; 19. Second limiting plate; 20. Water distribution pipe; 21. Support; 22. Baffle; 30. First slag discharge mechanism; 31. First opening and closing plate; 311. First pivot; 312. First connecting rod; 32. First slag discharge plate; 33. First slag discharge drive component; 34. First opening and closing cylinder; 341. First pin; 342. Second pin; 35. First rotating shaft; 40. Second slag discharge mechanism; 41. Second opening and closing plate; 411. Second pivot; 412. Second connecting rod; 42. Second slag discharge plate; 43. Second slag discharge drive component; 44. Second opening and closing cylinder; 441. Third pin; 442. Fourth pin; 45. Second rotating shaft; 50. Agitating mechanism; 51. Agitating drive component; 52. Agitating shaft; 521. Gear; 53. Agitating frame; 60. First basket; 61. First support plate; 70. Second basket; 71. Second support plate; 711. Handle; 80. Barrier mesh plate; 90. Extrusion mechanism; 91. Extrusion mesh plate; 92. Extrusion drive component; 921. Lifting screw; 922. Flange plate; 923. Connecting bolt; 100. Backwash pump; 110. Transparent plate; 1200. Slag removal mechanism; 1201. Lifting plate; 12011. Guide rod; 12012. Connecting plate; 1202. Push plate; 1203. Push plate drive component; 1204. Opening / closing door; 1205. Lifting drive component; 1206. Opening / closing cylinder; 1300. First telescopic plate; 1400. Second telescopic plate; 1500. Telescopic pipe; 1600. First telescopic drive component; 1601. First connecting frame; 1700. Second telescopic drive component; 1701. Second connecting frame; 1800. Third telescopic drive component; 1801. Third connecting frame. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 13 This application will be described in further detail below.

[0029] This application discloses a filtration device with self-cleaning and quick-replacement filter media.

[0030] Example 1 Reference Figure 1 and Figure 2 A filter device with self-cleaning and quick-replacement filter media includes a chamber 10, a water distribution pipe 20, a first filter media, and a second filter media. The chamber 10 is provided with a sedimentation chamber 11, a first filter chamber 12, and a second filter chamber 13. The first filter media is disposed in the first filter chamber 12, and the second filter media is disposed in the second filter chamber 13. The water distribution pipe 20 can be configured as an L-shape. The water inlet end of the water distribution pipe 20 is connected to the sedimentation chamber 11, and the water outlet end of the water distribution pipe 20 is connected to the first filter chamber 12. The water inlet end is located above the water outlet end, and the water outlet end is located below the first filter media. The chamber 10 is provided with an overflow port 14 connected to the first filter chamber 12 and the second filter chamber 13. The overflow port 14 is located above the first filter media and the second filter media.

[0031] Wastewater requiring filtration and purification, such as rainwater, is discharged into the sedimentation chamber 11, causing suspended solids and other impurities to settle. The clear liquid at the top of the sedimentation chamber flows into the distribution pipe 20 through its inlet and then into the first filter chamber 12 through its outlet. The wastewater then undergoes primary filtration through the first filter medium. Because the outlet of the distribution pipe 20 is located below the first filter medium, most of the impurities in the wastewater entering the first filter chamber 12 settle at the bottom of the chamber and do not adhere to the filter medium, thus reducing the amount of impurities passing through and effectively improving the filtration efficiency. The second filter medium has smaller pore sizes than the first filter medium. After coarse filtration through the first filter medium, the wastewater flows into the second filter chamber 13 through the overflow port 14 and undergoes fine filtration through the second filter medium, resulting in excellent filtration and purification of the wastewater. Since the overflow port 14 is located above the first and second filter media, the dirt in the sewage flowing into the second filter chamber 13 from the overflow port 14 can be deposited on the upper surface of the second filter media. Therefore, the dirt on the upper surface of the second filter media can be cleaned quickly, thereby effectively improving the sewage filtration and purification efficiency.

[0032] Reference Figure 3 The water outlet end of the water distribution pipe 20 is equipped with a bracket 21, and a baffle 22 is fixed at the upper end of the bracket 21. The baffle 22 can block the sewage discharged from the water outlet end of the water distribution pipe 20, so that the dirt in the sewage can settle down quickly, thereby improving the filtration effect and efficiency.

[0033] Reference Figure 4 and Figure 5 The sedimentation chamber 11 is provided with a first buffer baffle plate 111 and a second buffer baffle plate 112. The sedimentation chamber 11 is divided into a first buffer sedimentation chamber 113, a second buffer sedimentation chamber 114 and a third buffer sedimentation chamber 115 by the first buffer baffle plate 111 and the second buffer baffle plate 112. The water inlet end of the water distribution pipe 20 is connected to the third buffer sedimentation chamber 115. The chamber body 10 is provided with a water inlet 116 connected to the first buffer sedimentation chamber 113.

[0034] After the sewage enters the sedimentation chamber 11 through the inlet 116, the first buffer baffle 111 and the second buffer baffle 112 can intercept the dirt in the sewage. The second buffer baffle 112 is higher than the first buffer baffle 111. The first buffer baffle 111 is mainly used to block the dirt with larger density or volume in the sewage into the first buffer sedimentation chamber 113, and the second buffer baffle 112 is mainly used to block the dirt with smaller density or volume in the sewage into the second buffer sedimentation chamber 114.

[0035] Reference Figure 6 and Figure 7It also includes a first slag discharge mechanism 30 and a second slag discharge mechanism 40. The first slag discharge mechanism 30 includes a first opening and closing plate 31, a first slag discharge plate 32, a first slag discharge driving component 33, and a first opening and closing cylinder 34. The second slag discharge mechanism 40 includes a second opening and closing plate 41, a second slag discharge plate 42, a second slag discharge driving component 43, and a second opening and closing cylinder 44. The first slag discharge plate 32 is rotatably disposed in the first buffer sedimentation chamber 113. The first slag discharge driving component 33 is connected to the first slag discharge plate 32 for driving the first slag discharge plate 32 to rotate. More specifically, the first slag discharge plate 32 is rotatably disposed in the first buffer sedimentation chamber 113 via a first rotating shaft 35. The first slag discharge driving component 33 is connected to the first slag discharge plate 32 for driving the first slag discharge plate 32 to rotate. The first slag discharge drive component 33 is driven by the first rotating shaft 35 and is used to drive the first slag discharge plate 32 to rotate around the axis of the first rotating shaft 35. The first slag discharge drive component 33 adopts a first motor, which is fixed to the bin body 10. The second slag discharge plate 42 is rotatably disposed in the second buffer sedimentation chamber 114. The second slag discharge drive component 43 is driven by the second slag discharge plate 42 and is used to drive the second slag discharge plate 42 to rotate. More specifically, the second slag discharge plate 42 is rotatably disposed in the second buffer sedimentation chamber 114 via the second rotating shaft 45. The second slag discharge drive component 43 is driven by the second rotating shaft 45 and is used to drive the second slag discharge plate 42 to rotate around the axis of the second rotating shaft 45. Component 43 employs a second motor, which is fixedly mounted on the silo body 10. The silo body 10 is provided with a first slag discharge port 117 that communicates with the first buffer sedimentation chamber 113 and the outside of the silo body 10. A first opening and closing plate 31 is rotatably mounted on the first slag discharge port 117. More specifically, the first opening and closing plate 31 is fixedly mounted on a first pivot 311. The first opening and closing plate 31 is rotatably mounted on the first slag discharge port 117 of the silo body 10 via the first pivot 311. A first connecting rod 312 is fixedly mounted on the first pivot 311. A first opening and closing cylinder 34 is rotatably mounted on the silo body 10 via a first pin 341. The piston rod of the first opening and closing cylinder 34 is connected to the first connecting rod 312 via a second pin 342. The first buffer baffle plate 111 is provided with a second slag discharge port 118 that communicates with the first buffer sedimentation chamber 113 and the second buffer sedimentation chamber 114. The second opening and closing plate 41 is openable and closable at the second slag discharge port 118. More specifically, the second opening and closing plate 41 is fixedly provided with a second pivot 411. The second opening and closing plate 41 is rotatably provided at the second slag discharge port 118 of the first buffer baffle plate 111 via the second pivot 411. The second pivot 411 is fixedly provided with a second connecting rod 412. The second opening and closing cylinder 44 is rotatably provided on the chamber body 10 via a third pin 441. The piston rod of the second opening and closing cylinder 44 is hinged to the second connecting rod 412 via a fourth pin 442.

[0036] When it is necessary to clean the sediment in the first buffer sedimentation chamber 113 and the second buffer sedimentation chamber 114, the first opening and closing plate 31 and the second opening and closing plate 41 are opened by the first opening and closing cylinder 34 and the second opening and closing cylinder 44, respectively. Then, the first slag discharge plate 32 and the second slag discharge plate 42 are rotated by the first motor and the second motor, respectively, so that the sediment in the first buffer sedimentation chamber 113 and the second buffer sedimentation chamber 114 is scraped out from the first slag discharge port 117 and the second slag discharge port 118.

[0037] Reference Figure 8 The chamber 10 is provided with an air inlet 121 that is connected to the first filter chamber 12 for introducing compressed air into the first filter chamber 12. When it is necessary to clean the first filter medium in the first filter chamber 12, the air inlet 121 is connected to the compressed air source to introduce compressed air into the first filter chamber 12, generating bubbles in the first filter chamber 12 to improve the cleaning effect on the first filter medium.

[0038] Reference Figure 8 It also includes an agitation mechanism 50, which includes an agitation drive 51 and two sets of agitation shafts 52. The two sets of agitation shafts 52 are rotatably disposed in the first filter chamber 12. The agitation shafts 52 are provided with agitation frames 53. The agitation drive 51 is fixed to the chamber body 10 and is connected to the agitation drive for driving the agitation shafts 52 and agitation frames 53 to rotate.

[0039] While compressed air is introduced into the first filter chamber 12 through the air inlet 121, the agitator 53 is driven by the agitator drive 51 to agitate the sewage in the first filter chamber 12, forming abundant bubbles in the sewage, thereby cleaning the first filter medium with bubbles and effectively improving the cleaning effect of the first filter medium. The agitator drive 51 can be a third motor. The specific transmission connection between the third motor and the two sets of agitator shafts 52 is as follows: the ends of the two sets of agitator shafts 52 are respectively provided with mutually meshing gears 521, the third motor is fixed to the chamber body 10, and the third motor is transmittedly connected to the gear 521 at the end of one set of agitator shafts 52.

[0040] Reference Figure 2 It also includes a first basket 60, a second basket 70, and a barrier mesh plate 80. The first basket 60 is located in the first filter chamber 12 and above the agitator 53. The first filter medium is placed in the first basket 60. The second basket 70 is located in the second filter chamber 13 and the second filter medium is placed in the second basket 70. The second filter medium can be coke, gravel, fine sand, activated carbon, or glass shards. The barrier mesh plate 80 is fixed in the first filter chamber 12 and is located below the agitator 53 and above the outlet end of the water distribution pipe 20.

[0041] The installation methods of the first basket 60 in the first filter chamber 12 and the second basket 70 in the second filter chamber 13 are as follows: The inner wall of the first filter chamber 12 is provided with a first protrusion 123, and the edge of the first basket 60 is provided with a first support plate 61. The first basket 60 is supported on the first protrusion 123 by the first support plate 61. The inner wall of the second filter chamber 13 is provided with a second protrusion 133, and the edge of the second basket 70 is provided with a second support plate 71. The second basket 70 is supported on the second protrusion 133 by the second support plate 71. A handle 711 can be provided on the second support plate 71. When it is necessary to clean the second filter medium, the second basket 70 and the second filter medium can be lifted from the second filter chamber 13 and moved to the outside of the chamber 10 by the handle 711, so that the second filter medium can be cleaned. The operation is very convenient. The barrier mesh plate 80 can block the large-volume dirt in the sewage entering the first filter chamber 12, so as to avoid affecting the filtration of the first filter medium.

[0042] Reference Figure 2 It also includes an extrusion mechanism 90, which includes an extrusion screen plate 91 and an extrusion drive component 92. The extrusion drive component 92 is disposed in the chamber 10 and located above the first filter medium. The first filter medium is a soft material. The extrusion drive component 92 is connected to the extrusion screen plate 91 for driving the extrusion screen plate 91 to move toward or away from the first filter medium.

[0043] The extrusion drive 92 can be a screw jack, and the extrusion screen 91 can be a split structure, detachably connected to the lifting screw 921 of the screw jack, so as to facilitate the replacement of the first filter medium in the first basket 60 after the extrusion screen 91 is disassembled. More specifically, the lower end of the lifting screw 921 is provided with a flange plate 922, and the split structure of the extrusion screen 91 is detachably connected to the flange plate 922 by connecting bolts 923. The first filter medium can be a cotton ball. During normal filtration of sewage, the extrusion screen 91 is pressed on top of the first filter medium to prevent the soft first filter medium from floating to the water surface. During cleaning of the first filter medium, the extrusion drive 92 drives the extrusion screen 91 to move back and forth, repeatedly compressing the soft first filter medium and repeatedly squeezing the filter pores of the first filter medium, thereby achieving a good cleaning effect on the filter pores of the first filter medium. Furthermore, the extrusion drive 92 drives the extrusion mesh plate 91 to press against the first filter medium, which can extrude and adjust the pore size of the first filter medium. This allows the pore size of the first filter medium to be changed to adapt to different working conditions. For example, when the first filter medium is a new material that has just been put into use, there are fewer pollutants in the pores of the first filter medium, and the sewage can pass through well. In this case, the extrusion drive 92 can extrude the first filter medium to a greater extent, so that the pores are in a narrower state to ensure a better filtration effect. When the first filter medium has been used for a period of time, there are more pollutants clogging the pores. At this time, the extrusion drive 92 can reduce the degree of extrusion on the first filter medium to ensure that the sewage can pass through the pores.

[0044] Reference Figure 6 It also includes a backwash pump 100, a chamber 10 having a backwash inlet 131 connected to the second filter chamber 13, the backwash pump 100 being connected to the backwash inlet 131 for introducing backwash water into the second filter chamber 13, a drain outlet 132 connected to the second filter chamber 13, the drain outlet 132 being located below the second filter medium, and a first drain outlet 122 connected to the first filter chamber 12.

[0045] The filtered and purified wastewater can be discharged through the drain outlet 132. Cleaning water can be introduced into the second filter chamber 13 through the backwash pump 100 to backwash the first and second filter media. During backwashing, the flow direction of the cleaning water is opposite to the flow direction of the wastewater during normal operation. After long-term operation, a certain amount of dirt will accumulate at the bottom of the first filter chamber 12. This dirt can be discharged through the first drain outlet 122.

[0046] Reference Figure 1It also includes a transparent plate 110. The side walls of the chamber 10 are respectively provided with viewing windows 15 that communicate with the first filter chamber 12 and the second filter chamber 13. The transparent plate 110 is fixed to the viewing window 15. The internal conditions of the first filter chamber 12 and the second filter chamber 13 can be observed through the transparent plate 110, which makes it convenient for staff to understand the sedimentation of the deposits in the first filter chamber 12 and the second filter chamber 13 in a timely manner. The transparent plate 110 can be made of tempered glass, acrylic sheet or other transparent materials commonly used in the art.

[0047] The implementation principle of a filter device with self-cleaning and quick-replacement filter media in this embodiment is as follows: rainwater and other sewage that need to be filtered and purified are discharged into the sedimentation chamber 11 through the inlet 116. The first buffer baffle 111 and the second buffer baffle 112 intercept the dirt in the sewage, causing the suspended solids and other dirt in the sewage to settle down. After sedimentation, the clear liquid in the upper layer of sewage flows into the distribution pipe 20 through the inlet end of the distribution pipe 20 and into the first filter chamber 12 through the outlet end. Then, the sewage undergoes coarse filtration through the first filter media and flows into the second filter chamber 13 through the overflow port 14, where it undergoes fine filtration through the second filter media. The filtered sewage is discharged from the drain port 132.

[0048] Over time, both the first and second filter media become contaminated, necessitating cleaning. Cleaning of the first and second filter media occurs after wastewater entry into chamber 10 has ceased. At this stage, the backwash pump 100 is activated, filling chamber 10 with flushing water. The squeezing drive 92 drives the squeezing screen 91 to move up and down repeatedly, repeatedly squeezing and cleaning the first filter media. The first filter media in chamber 12 is more heavily contaminated than the second filter media in chamber 13. Therefore, while the squeezing drive 92 drives the squeezing screen 91 to clean the first filter media, compressed air is simultaneously introduced into chamber 12 through inlet 121. Simultaneously, the agitator 51 drives the agitator to agitate, providing bubble cleaning of the first filter media, ensuring thorough removal of contaminants from its surface. Cleaning of chamber 13 involves repeatedly rinsing the second filter media with an external backwash nozzle. Once the second filter media is clean, it can be reused. After repeated cleaning, the first and second filter media will eventually become ineffective and need to be replaced. When replacing the second filter media, the second basket 70 along with the second filter media can be directly lifted out of the second filter chamber 13 through the handle 711 to replace the second filter media. When replacing the first filter media, the extrusion mesh plate 91 needs to be removed first, and then the first filter media can be taken out from the first basket 60 to replace it with a new first filter media.

[0049] Example 2 A filter device with self-cleaning and quick-replacement filter media is provided. The difference between this embodiment and Embodiment 1 is that: (Refer to...) Figure 9 and Figure 10 It also includes a first telescopic plate 1300, a second telescopic plate 1400, a telescopic tube 1500, a first telescopic drive component 1600, a second telescopic drive component 1700, and a third telescopic drive component 1800. The first telescopic plate 1300 is slidably disposed on the first buffer water-proof plate 111. The first telescopic drive component 1600 is connected to the first telescopic plate 1300 and is used to drive the first telescopic plate 1300 to telescopically move relative to the first buffer water-proof plate 111. More specifically, the inner wall of the silo body 10 is provided with a first limiting plate 18. The first telescopic plate 1300 is slidably disposed between the first limiting plate 18 and the first buffer water-proof plate 111. The first telescopic drive component 1600 adopts a first telescopic cylinder, which is fixedly disposed on the silo body 10. The piston rod of a telescopic cylinder is fixedly connected to the first telescopic plate 1300 via a first connecting bracket 1601; the second telescopic plate 1400 is slidably disposed on the second buffer water-proof plate 112, and the second telescopic drive component 1700 is drively connected to the second telescopic plate 1400 to drive the second telescopic plate 1400 to telescopically move relative to the second buffer water-proof plate 112. More specifically, the inner wall of the chamber 10 is provided with a second limiting plate 19, and the second telescopic plate 1400 is slidably disposed between the second limiting plate 19 and the second buffer water-proof plate 112. The second telescopic drive component 1700 is a second telescopic cylinder, which is fixedly disposed on the chamber 10, and the piston rod of the second telescopic cylinder is fixedly connected to the second telescopic plate 1400 via the second connecting bracket 1701. Figure 11 The telescopic pipe 1500 is slidably disposed on the water distribution pipe 20. The third telescopic drive component 1800 is connected to the telescopic pipe 1500 for driving the telescopic pipe 1500 to move telescopically relative to the water distribution pipe 20. More specifically, the third telescopic drive component 1800 adopts a third telescopic cylinder, which is fixedly disposed on the chamber body 10. The piston rod of the third telescopic cylinder is fixedly connected to the telescopic pipe 1500 through the third connecting bracket 1801.

[0050] The heights of the first telescopic plate 1300, the second telescopic plate 1400, and the telescopic pipe 1500 can be adjusted respectively by the first telescopic drive 1600, the second telescopic drive 1700, and the third telescopic drive 1800. This allows the heights of the first telescopic plate 1300, the second telescopic plate 1400, and the telescopic pipe 1500 to be adjusted according to the water level in the sedimentation chamber 11. For example, when the water level in the sedimentation chamber 11 is high, the heights can be adjusted appropriately by the first telescopic drive 1600, the second telescopic drive 1700, and the third telescopic drive 1800. The heights of the first telescopic plate 1300, the second telescopic plate 1400, and the telescopic pipe 1500 are increased to ensure the interception effect of dirt in the sewage. When the water level in the sedimentation chamber 11 is low, the heights of the first telescopic plate 1300, the second telescopic plate 1400, and the telescopic pipe 1500 can be appropriately lowered by the first telescopic drive component 1600, the second telescopic drive component 1700, and the third telescopic drive component 1800, respectively, to prevent sewage from being unable to flow through the first telescopic plate 1300 and the second telescopic plate 1400, or from being unable to flow into the telescopic pipe 1500.

[0051] Reference Figure 12 and Figure 13 The system also includes a slag cleaning mechanism 1200, which comprises a lifting plate 1201, a push plate 1202, a push plate drive 1203, an opening and closing door 1204, a lifting drive 1205, and an opening and closing cylinder 1206. The silo body 10 has a slag cleaning chamber 16 connected to the sedimentation chamber 11 and a slag outlet 161 connected to the slag cleaning chamber 16. The lifting plate 1201 is slidably and vertically disposed within the slag cleaning chamber 16. The lifting drive 1205 is connected to the lifting plate 1201 for driving the lifting plate 1201 to move up and down. More specifically, the silo body 10 is provided with a guide sleeve 17, and a guide rod 12011 is provided at the bottom of the lifting plate 1201. The guide rod 12011 slides through the guide sleeve 17, and a connecting plate 1201 is provided at the end of the guide rod 12011. 2. The lifting drive component 1205 is fixedly installed in the bin body 10. The lifting drive component 1205 adopts a lifting cylinder. The piston rod of the lifting cylinder is fixedly connected to the connecting plate 12012. The push plate 1202 is slidably installed in the slag cleaning chamber 16. The push plate drive component 1203 is connected to the push plate 1202 for driving the push plate 1202 to move towards or away from the slag outlet 161. More specifically, the push plate drive component 1203 adopts a push plate cylinder. The push plate cylinder is fixedly installed in the bin body 10. The piston rod of the push plate cylinder is fixedly connected to the push plate 1202. The opening and closing door 1204 is openable and closable at the slag outlet 161. More specifically, the opening and closing cylinder 1206 is fixedly installed on the outer wall of the bin body 10 and is connected to the opening and closing door 1204 for driving the opening and closing door 1204 to be openable and closable at the slag outlet 161.

[0052] The first slag discharge mechanism 30 and the second slag discharge mechanism 40 can only clean part of the sediment in the sedimentation chamber 11. When it is necessary to thoroughly clean the sediment in the sedimentation chamber 11, the lifting plate 1201 is first lowered to the bottom of the slag cleaning chamber 16 by the lifting drive component 1205. Then, the opening and closing door 1204 is opened by the opening and closing cylinder 1206. Then, the push plate drive component 1203 drives the push plate 1202 to move toward the slag outlet 161. The dirt on the lifting plate 1201 is pushed out of the slag outlet 161 by the push plate 1202.

[0053] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A filter device with self-cleaning and quick-replacement filter media, characterized in that, The device includes a chamber (10), a water distribution pipe (20), a first filter medium, and a second filter medium. The chamber (10) is provided with a sedimentation chamber (11), a first filter chamber (12), and a second filter chamber (13). The first filter medium is located in the first filter chamber (12), and the second filter medium is located in the second filter chamber (13). The inlet end of the water distribution pipe (20) is connected to the sedimentation chamber (11), and the outlet end of the water distribution pipe (20) is connected to the first filter chamber (12). The inlet end is located above the outlet end, and the outlet end is located below the first filter medium. The chamber (10) is provided with an overflow port (14) connected to the first filter chamber (12) and the second filter chamber (13). The overflow port (14) is located above the first filter medium and the second filter medium. The filtration device also includes a first basket (60) and a second basket (70), wherein the first basket (60) is disposed in the first filtration chamber (12) and the first filter medium is placed in the first basket (60), and the second basket (70) is disposed in the second filtration chamber (13) and the second filter medium is placed in the second basket (70); The filtration device also includes an extrusion mechanism (90), which includes an extrusion screen (91) and an extrusion drive (92). The extrusion drive (92) is disposed in the chamber (10) and located above the first filter medium. The first filter medium is a soft material. The extrusion drive (92) is connected to the extrusion screen (91) for driving the extrusion screen (91) to move toward or away from the first filter medium. The filtration device also includes an agitation mechanism (50) and a barrier screen (80). The agitation mechanism (50) includes an agitation drive (51) and two sets of agitation shafts (52). The two sets of agitation shafts (52) are rotatably disposed in the first filtration chamber (12). The agitation shafts (52) are provided with agitation frames (53). The agitation drive (51) is fixed to the chamber body (10) and is connected to the agitation shafts (52) for driving the agitation shafts (52) and the agitation frames (53) to rotate. The first basket (60) is located above the stirring frame (53), the barrier mesh plate (80) is fixed in the first filter chamber (12), and the barrier mesh plate (80) is located below the stirring frame (53) and above the water outlet of the water distribution pipe (20). The sedimentation chamber (11) is provided with a first buffer baffle plate (111) and a second buffer baffle plate (112). The sedimentation chamber (11) is divided into a first buffer sedimentation chamber (113), a second buffer sedimentation chamber (114) and a third buffer sedimentation chamber (115) by the first buffer baffle plate (111) and the second buffer baffle plate (112). The water inlet end of the water distribution pipe (20) is connected to the third buffer sedimentation chamber (115). The chamber body (10) is provided with a water inlet (116) connected to the first buffer sedimentation chamber (113). The filtration device further includes a first telescopic plate (1300), a second telescopic plate (1400), a telescopic pipe (1500), a first telescopic drive (1600), a second telescopic drive (1700), and a third telescopic drive (1800). The first telescopic plate (1300) is slidably disposed on the first buffer water-separating plate (111). The first telescopic drive (1600) is drively connected to the first telescopic plate (1300) and is used to drive the first telescopic plate (1300) to telescopically move relative to the first buffer water-separating plate (111). The telescopic plate (1400) is slidably disposed on the second buffer water-blocking plate (112). The second telescopic drive member (1700) is drivenly connected to the second telescopic plate (1400) and is used to drive the second telescopic plate (1400) to telescopically move relative to the second buffer water-blocking plate (112). The telescopic pipe (1500) is slidably disposed on the water distribution pipe (20). The third telescopic drive member (1800) is drivenly connected to the telescopic pipe (1500) and is used to drive the telescopic pipe (1500) to telescopically move relative to the water distribution pipe (20).

2. The filter device with self-cleaning and quick-replacement filter media according to claim 1, characterized in that, The chamber (10) is provided with an air inlet (121) that communicates with the first filter chamber (12) for introducing compressed air into the first filter chamber (12).

3. A filter device with self-cleaning and quick-replacement filter media according to claim 1, characterized in that, It also includes a backwash pump (100), the chamber (10) is provided with a backwash inlet (131) connected to the second filter chamber (13), the backwash pump (100) is connected to the backwash inlet (131) and is used to introduce backwash water into the second filter chamber (13), the chamber (10) is provided with a drain outlet (132) connected to the second filter chamber (13), and the drain outlet (132) is located below the second filter medium.

4. A filter device with self-cleaning and quick-replacement filter media according to claim 1, characterized in that, It also includes a first slag discharge mechanism (30) and a second slag discharge mechanism (40). The first slag discharge mechanism (30) includes a first opening and closing plate (31), a first slag discharge plate (32), and a first slag discharge driving component (33). The second slag discharge mechanism (40) includes a second opening and closing plate (41), a second slag discharge plate (42), and a second slag discharge driving component (43). The first slag discharge plate (32) is rotatably disposed in the first buffer sedimentation chamber (113). The first slag discharge driving component (33) is connected to the first slag discharge plate (32) for driving the first slag discharge plate (32) to rotate. The second slag discharge plate (42) is rotatably disposed in the second buffer sedimentation chamber (113). 14), the second slag discharge drive (43) is connected to the second slag discharge plate (42) for driving the second slag discharge plate (42) to rotate. The silo body (10) is provided with a first slag discharge port (117) that communicates with the first buffer sedimentation chamber (113) and the outside of the silo body (10). The first opening and closing plate (31) can be opened and closed at the first slag discharge port (117). The first buffer water-proof plate (111) is provided with a second slag discharge port (118) that communicates with the first buffer sedimentation chamber (113) and the second buffer sedimentation chamber (114). The second opening and closing plate (41) can be opened and closed at the second slag discharge port (118).

5. A filter device with self-cleaning and quick-replacement filter media according to claim 1, characterized in that, It also includes a slag cleaning mechanism (1200), which includes a lifting plate (1201), a push plate (1202), a push plate drive (1203), an opening and closing door (1204), and a lifting drive (1205). The silo body (10) is provided with a slag cleaning chamber (16) communicating with the sedimentation chamber (11) and a slag outlet (161) communicating with the slag cleaning chamber (16). The lifting plate (1201) is slidably and vertically disposed in the slag cleaning chamber (16). The lifting drive component (1205) is connected to the lifting plate (1201) for driving the lifting plate (1201) to lift. The push plate (1202) is slidably disposed in the slag cleaning chamber (16). The push plate drive component (1203) is connected to the push plate (1202) for driving the push plate (1202) to move toward or away from the slag outlet (161). The opening and closing door (1204) is openable and closable disposed in the slag outlet (161).

Images