Filtering equipment capable of adjusting sizes of filtering holes in pneumatic folding manner

Abstract

The invention discloses filtering equipment capable of adjusting the size of filtering holes in a pneumatic folding mode, and belongs to the technical field of sewage filtering, the filtering equipment comprises an equipment main body internally provided with a filtering cavity, and a pneumatic folding filtering assembly, a filtering device and a pneumatic folding device are erected in the filtering cavity. The filter device is a folding filter screen and is provided with a plurality of fold lines which extend front and back and are arrayed left and right, and the fold lines are flexibly connected through an elastic belt; the crease lines are divided into a first crease line (low position) and a second crease line (high position) which are alternately distributed, a lower groove inclining towards the first crease line is formed in the first crease line, and filtering holes are evenly formed in the groove along the crease lines. The pneumatic folding device comprises hanging pieces with hanging grooves, hanging rods fixed to the cavity wall, corrugated air pipes connecting the adjacent hanging pieces, an air pump, a main air conveying pipe and an auxiliary air conveying pipe. When the air pump inflates / exhausts air to drive the corrugated air pipe to stretch and retract, the folding filter screen is driven by the hanging piece to stretch / fold, the sizes of all the filter holes are synchronously adjusted, different water quality interception requirements are met, filter screen replacement is reduced, and adaptability is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater filtration technology, specifically to a filtration device that uses a pneumatic folding method to adjust the size of the filter holes. Background Technology

[0002] In wastewater filtration, filtration is a crucial step in removing suspended solids from water. Traditional filtration equipment often uses metal mesh or fiber filter cloth with fixed filter holes as the filter medium, which is prone to the following technical problems: Fixed filter holes: For different water qualities (such as those containing large or fine particles), fixed filter holes are difficult to match the best interception requirements. Either the filter holes are too large, causing impurities to pass through, or the filter holes are too small, causing blockage and affecting filtration efficiency. Replacement takes a long time: The machine needs to be stopped to replace the filter, which is time-consuming and labor-intensive, seriously affecting the continuity of processing and reducing the working efficiency of the equipment.

[0003] Therefore, there is an urgent need for a wastewater filtration device that can dynamically adjust the size of the filter holes, reduce the frequency of replacement, and has a compact structure. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide a filtration device that uses a pneumatic folding method to adjust the size of the filter holes. By pneumatically driving the extension and folding of the folded filter screen, the size of the filter holes can be adjusted synchronously, thus solving the problem of the need for frequent replacement and poor adaptability of traditional fixed-hole filter screens.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A filtration device that uses a pneumatic folding method to adjust the size of the filter holes includes a main body, and the main body has a filter chamber inside; The key improvement is that a pneumatically folded filter assembly is suspended inside the filter chamber, which includes a filter device and a pneumatically folded device. The filtration device includes a pleated filter screen, which is a pleated plastic sheet (such as PP material). The entire pleated filter screen has multiple crease lines extending forward and backward and distributed linearly in a left-right array. During the molding process, the crease lines need to be pre-pressed. The rigidity of the crease lines is reduced by local thinning, scoring, or material orientation design, making them "flexible nodes" that can be repeatedly bent, maintaining a certain connection strength while being able to be folded flexibly. The crease lines are divided into crease line one and crease line two, which are distributed alternately, and the height of crease line one is always lower than the height of crease line two. At the location of all crease lines one, a depression is formed that gradually slopes down from crease line two to crease line one. The depression facilitates the flow of impurities. Multiple evenly distributed filter holes are linearly opened along crease line one in all depressions. The pneumatic folding device includes multiple suspension plates (such as PP material) connected to the fold lines at both ends of the folded filter screen, suspension grooves opened on the suspension plates, suspension rods fixed at both ends to the inner wall of the filter chamber and sliding through all the suspension grooves, corrugated air pipes fitted on the suspension rods and simultaneously fixing two adjacent suspension plates, an air pump installed on the outside of the main body of the equipment, two main air supply pipes (which are rigid air pipes) connected to the air pump and respectively fixed to one side of the corrugated air pipes, and auxiliary air supply pipes (which are flexible air pipes) connecting each corrugated air pipe to the main air supply pipes.

[0006] By adopting the above solution, when the air pump fills or draws air into the corrugated air pipe, the suspension plate drives the entire folded filter screen to extend or fold evenly. At this time, all filter holes expand or shrink synchronously, thereby adapting to the interception needs of different water qualities (such as enlarging the filter holes for large particles and shrinking them for fine particles), avoiding frequent filter screen replacements, and making it more adaptable.

[0007] As a preferred embodiment of a filtration device that uses pneumatic folding to adjust the size of the filter holes, the folded filter screen includes a top folded filter screen and a bottom folded filter screen; the difference between the top folded filter screen and the bottom folded filter screen is that the filter holes of the top folded filter screen are larger than those of the bottom folded filter screen, thereby forming a double-layer filtration and improving the interception accuracy of impurities in sewage.

[0008] The second technical problem to be solved by the present invention is to provide a filtration device that uses a pneumatic folding method to adjust the size of the filter holes. The entire pneumatic folding filter assembly is tilted and combined with a tilted impurity box and a flip-up drain plate. The device does not need to be disassembled when collecting and cleaning impurities, thus reducing downtime for maintenance.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: Based on the above scheme, two sets of pneumatic folding filter components are provided in the filter chamber; the two sets of pneumatic folding filter components are separated by an upper beam fixed in the middle of the inner wall of the filter chamber and gradually tilt and decrease towards the front and rear sides of the upper beam. Impurity boxes located at the bottom of the pneumatic folding filter assembly are fixed on the front and rear inner walls of the filter chamber. Drainage plates (visible plates) that can be flipped open and communicate with the impurity boxes are installed on the front and rear outer walls of the filter chamber. The bottom of the impurity box is a sloping bottom that slopes down towards the location of the drainage plate.

[0010] By adopting the above solution, since the two sets of pneumatic folding filter components gradually tilt and lower to the front and rear sides of the upper beam, after the water passes through the filter holes, the impurities are intercepted on the folded filter screen and then slide down the lower groove into the impurity box, thereby avoiding or reducing the accumulation of impurities on the folded filter screen. The bottom of the impurity box is sloping, and the impurities will be automatically discharged after the drain plate is opened, which can greatly reduce downtime for maintenance.

[0011] In a preferred embodiment of a filtration device that uses pneumatic folding to adjust the size of the filter holes, a guide plate is fixed on the upper front and rear inner walls of the filtration chamber, which is arranged around the pneumatic folding filter assembly. The guide plate is located above the pneumatic folding filter assembly and gradually converges and lowers towards the middle of the pneumatic folding filter assembly, guiding the sewage to flow evenly to the middle of the folded filter screen.

[0012] In a preferred embodiment of a filtration device that uses pneumatic folding to adjust the size of the filter holes, a protective cover is fixed on the inner wall of the filtration chamber above the upper beam. All pneumatic folding devices built into the filtration chamber are hidden under the protective cover and the guide plate, thereby protecting the pneumatic folding devices.

[0013] The third technical problem to be solved by the present invention is to provide a filtration device that uses a pneumatic folding method to adjust the size of the filter holes, dividing the filtration chamber into a primary filtration chamber and a secondary filtration chamber, thereby further improving the purification effect on wastewater.

[0014] To achieve the above objectives, the present invention adopts the following technical solution: Based on the above scheme, there are two filtration chambers inside the main body of the equipment, namely a primary filtration chamber and a secondary filtration chamber; the only difference between the primary filtration chamber and the secondary filtration chamber is that the filter holes of the primary filtration chamber are larger than those of the secondary filtration chamber.

[0015] By adopting the above scheme, the wastewater first enters the primary filtration chamber for coarse filtration, and then enters the secondary filtration chamber for fine filtration, which can further improve the purification effect of wastewater.

[0016] As a preferred embodiment of a filtration device that uses a pneumatic folding method to adjust the size of the filter holes, water injection pumps are respectively installed on the front and rear sides of the primary filtration chamber. Each water injection pump is connected to the top of the primary filtration chamber through a water injection pipe, and the water injection pumps transport sewage into the primary filtration chamber for coarse filtration.

[0017] As a preferred embodiment of a filtration device that uses pneumatic folding to adjust the size of the filter holes, water pumps are provided on the front and rear sides of the secondary filtration chamber. Each water pump is connected to the bottom of the primary filtration chamber through a lower water supply pipe, and each water pump is connected to the top of the secondary filtration chamber through an upper water supply pipe. The coarsely filtered wastewater is then transported to the secondary filtration chamber for fine filtration through the water pumps. A water pump is installed on the right side of the secondary filtration chamber. The water pump is connected to the bottom of the secondary filtration chamber through a water pumping pipe. The water pump delivers the finally purified water to the next water treatment equipment.

[0018] The beneficial effects of this invention are as follows: 1. Dynamically adjustable filter holes: The folded filter screen is pneumatically driven to expand and contract, and all filter holes expand or shrink synchronously to adapt to the interception needs of different water qualities (such as enlarging the filter holes for large particles and shrinking them for fine particles), avoiding frequent filter screen replacements. 2. High filtration efficiency: The double-layer pleated filter screen (top layer coarse filtration + bottom layer fine filtration) and the dual / multi-stage filtration chamber design increase the filtration area and interception accuracy per unit volume, making it suitable for high-flow-rate sewage scenarios; 3. Easy maintenance: The tilted design of the impurity box, combined with the flip-up drain plate, allows for impurity collection and cleaning without disassembling the equipment, reducing downtime for maintenance. 4. Compact structure: The folded filter screen is suspended in the air, and with the optimized layout of the guide plate and protective cover, it saves equipment space and reduces installation costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 The three-dimensional structure of a filtration device that uses pneumatic folding to adjust the size of the filter pores. Figure 1 ; Figure 2 The three-dimensional structure of a filtration device that uses pneumatic folding to adjust the size of the filter pores. Figure 2 ; Figure 3 This is a front view of a filtration device that uses pneumatic folding to adjust the size of the filter holes; Figure 4 This is a diagram of the internal structure of a filtration device that uses pneumatic folding to adjust the size of the filter pores. Figure 5 A three-dimensional structural diagram of two sets of pneumatically folded filter components when tilted. Figure 6 This is a three-dimensional structural diagram of the pneumatic pleated filter assembly; Figure 7 This is a 3D structural diagram of a folded filter screen. Figure 8 This is a top view of the folded filter screen. Figure 9 for Figure 7 A magnified view of a section at point A in the middle; Figure 10 for Figure 6 A magnified view of a section at point B in the middle; Figure 11 This is a three-dimensional structural diagram of the impurity box; Figure 12 This is a 3D structural diagram of the air deflector; Figure 13 This is a three-dimensional structural diagram of the protective shield.

[0021] Reference numerals: 1-Main body of equipment; 2-Pneumatic folding filter assembly; 21-Filter device; 211-Folded filter screen; 211a-Top folded filter screen; 211b-Bottom folded filter screen; 212-Fold line; 212a-Fold line one; 212b-Fold line two; 213-Lower groove; 214-Filter hole; 22-Pneumatic folding device; 221-Suspension plate; 222-Suspension groove; 223-Suspension rod ; 224-Corrugated air pipe; 225-Air pump; 226-Main air supply pipe; 227-Auxiliary air supply pipe; 3-Upper beam; 4-Impurity box; 5-Drainage plate; 6-Guide plate; 7-Protective cover; 8-Filter chamber; 8a-Primary filter chamber; 8b-Secondary filter chamber; 9-Water injection pump; 10-Water injection pipe; 11-Water supply pump; 12-Lower water supply pipe; 13-Upper water supply pipe; 14-Water pump; 15-Water supply pipe. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1 to 4 , Figure 6 As shown, a filtration device employing a pneumatic folding mechanism to adjust the size of the filter pores is used for filtering impurities in wastewater. It includes a main body 1, with a filter chamber 8 inside. The core invention lies in the fact that a pneumatically folded filter assembly 2 is suspended inside the filter chamber 8. This pneumatically folded filter assembly 2 comprises a filter device 21 and a pneumatically folding device 22. Figures 7 to 9As shown, the filter device 21 includes a pleated filter screen 211, which is a pleated plastic sheet (PP material). The entire pleated filter screen 211 has multiple crease lines 212 extending forward and backward and linearly distributed left and right. During the molding process, the crease lines need to be pre-pressed. The crease lines are designed by local thinning, scoring, or material orientation to reduce the rigidity of the area, making it a repeatedly bendable "flexible node" that maintains a certain connection strength while allowing for flexible folding. The crease lines 212 are divided into crease line one 212a and crease line two 212b, which are alternately distributed, and the height of crease line one 212a is always lower than that of the crease line two 212b. At the height of 212b, all crease lines 212a form a gradually sloping groove 213 that slopes downwards from crease line 212b to crease line 212a. The groove 213 facilitates the flow of impurities. Multiple evenly distributed filter holes 214 are linearly formed along crease line 212a within each groove 213. The pleated filter screen 211 includes a top pleated filter screen 211a and a bottom pleated filter screen 211b. The difference between the top pleated filter screen 211a and the bottom pleated filter screen 211b is that the filter holes 214 of the top pleated filter screen 211a are larger than those of the bottom pleated filter screen 211b, thus forming a double-layer filtration system and improving the interception accuracy of impurities in the wastewater. Figures 1 to 4 , Figure 10 As shown, the pneumatic folding device 22 includes multiple suspension plates 221 (PP material) connected to the fold lines 212b at the front and rear ends of the folded filter screen 211, suspension grooves 222 opened on the suspension plates 221, suspension rods 223 fixed at both ends to the inner wall of the filter chamber 8 and sliding through all the suspension grooves 222, corrugated air pipes 224 fitted on the suspension rods 223 and simultaneously fixing two adjacent suspension plates 221, an air pump 225 installed outside the main body 1, two main air supply pipes 226 (which are rigid air pipes) simultaneously connected to the air pump 225 and respectively fixed to one side of the corrugated air pipes 224, and auxiliary air supply pipes 227 (which are flexible air pipes) connecting each corrugated air pipe 224 to the main air supply pipes 226 respectively. When the air pump 225 inflates or deflates the corrugated air pipe 224, the suspension plate 221 drives the entire folded filter screen 211 to extend or fold evenly. At this time, all filter holes 214 expand or shrink synchronously, thereby adapting to the interception needs of different water qualities (such as enlarging the filter holes for large particles and shrinking them for fine particles), avoiding frequent filter screen replacements, and making it more adaptable.

[0024] like Figures 4 to 5 , Figure 11As shown, two sets of pneumatic pleated filter components 2 are installed in the filter chamber 8. The two sets of pneumatic pleated filter components 2 are separated by an upper beam 3 fixed in the middle of the inner wall of the filter chamber 8, and gradually slope downwards towards the front and rear sides of the upper beam 3. Impurity boxes 4 are fixed at the bottom of the pneumatic pleated filter components 2 on the front and rear inner walls of the filter chamber 8. Drainage plates 5 (visible plates) that can be flipped open and communicate with impurity boxes 4 are installed on the front and rear outer walls of the filter chamber 8. The bottom of the impurity box 4 is a sloping bottom that slopes downwards towards the location of the drainage plate 5. Since the two sets of pneumatic pleated filter components 2 gradually slope downwards towards the front and rear sides of the upper beam 3, after the water passes through the filter hole 214, impurities are intercepted on the pleated filter screen 211, and then slide down the lower groove 213 into the impurity box 4, thereby avoiding or reducing the accumulation of impurities on the pleated filter screen 211. Since the bottom of the impurity box 4 is a sloping bottom, the impurities will be automatically discharged after the drainage plate 5 is opened, which can greatly reduce downtime maintenance time.

[0025] like Figure 4 , Figure 12 As shown, the front and rear inner walls of the filter chamber 8 are also fixed with guide plates 6 arranged around the pneumatic folded filter assembly 2; the guide plates 6 are located above the pneumatic folded filter assembly 2 and gradually converge and lower towards the middle of the pneumatic folded filter assembly 2, guiding the sewage to flow evenly to the middle of the folded filter screen 211.

[0026] like Figure 4 , Figure 13 As shown, a protective cover 7 is also fixed on the inner wall of the filter chamber 8 above the upper beam 3. All the pneumatic folding devices 22 built into the filter chamber 8 are hidden under the protective cover 7 and the guide plate 6, thereby protecting the pneumatic folding devices 22.

[0027] like Figures 1 to 3 As shown, the main body 1 of the equipment has two filtration chambers 8, namely a primary filtration chamber 8a and a secondary filtration chamber 8b. The only difference between the primary filtration chamber 8a and the secondary filtration chamber 8b is that the filter holes 214 of the primary filtration chamber 8a are larger than those of the secondary filtration chamber 8b. The wastewater first enters the primary filtration chamber 8a for coarse filtration, and then enters the secondary filtration chamber 8b for fine filtration, which can further improve the purification effect of the wastewater.

[0028] Continue as Figures 1 to 3 As shown, water injection pumps 9 are installed on the front and rear sides of the primary filtration chamber 8a. Each water injection pump 9 is connected to the top of the primary filtration chamber 8a through a water injection pipe 10. The water injection pumps 9 transport sewage into the primary filtration chamber 8a for coarse filtration.

[0029] Continue as Figures 1 to 3As shown, water pumps 11 are installed on both the front and rear sides of the secondary filtration chamber 8b. Each water pump 11 is connected to the bottom of the primary filtration chamber 8a through a lower water pipe 12, and to the top of the secondary filtration chamber 8b through an upper water pipe 13. The water pumps 11 transport the coarsely filtered wastewater to the secondary filtration chamber 8b for fine filtration. A water pump 14 is installed on the right side of the secondary filtration chamber 8b. The water pump 14 is connected to the bottom of the secondary filtration chamber 8b through a water pipe 15. The water pump 14 transports the finally purified water to the next water treatment device.

[0030] The working principle of this invention is as follows: Equipment working principle: During application, the water injection pump 9 located before and after the primary filtration chamber 8a transports the sewage to the primary filtration chamber 8a for coarse filtration. Then, the coarsely filtered sewage is transported to the secondary filtration chamber 8b for fine filtration by the water transfer pump 11. Finally, the purified water is transported to the next water treatment equipment by the water pump 14.

[0031] Filtration Working Principle: The primary filtration chamber 8a and the secondary filtration chamber 8b filter wastewater in the same way, both using the pneumatic pleated filter assembly 2. The only difference between the primary filtration chamber 8a and the secondary filtration chamber 8b is that the filter holes 214 in the primary filtration chamber 8a are larger than those in the secondary filtration chamber 8b. Before filtering wastewater, the pneumatic pleated filter assembly 2 adjusts the size of the filter holes 214 according to the actual water quality. When filtering large particles, the PLC controls the air pump 225 to inflate the corrugated air pipe 224, which in turn causes the entire pleated filter screen 211 to extend evenly through the suspension plate 221. At this time, all filter holes 214 expand synchronously, thus filtering large particles. When filtering small particles, the PLC controls the air pump 225 to extract air from the corrugated air pipe 224, which in turn causes the entire pleated filter screen 211 to fold evenly through the suspension plate 221. At this time, all filter holes 214 shrink synchronously. This avoids frequent filter replacements and has higher adaptability.

[0032] Working principle of sewage discharge: As the two sets of pneumatic folding filter components 2 gradually tilt and lower to the front and rear sides of the upper beam 3, after the water passes through the filter hole 214, the impurities are intercepted on the folded filter screen 211, and then slide down along the lower groove 213 into the impurity box 4. The bottom of the impurity box 4 is sloping. After the sewage discharge plate 5 is opened later, the impurities will be automatically discharged, which can greatly reduce downtime for maintenance.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filtration device that uses a pneumatic folding method to adjust the size of the filter holes, comprising a main body of the device, wherein the main body of the device has a filter chamber inside; Its features are: The filter chamber is equipped with a pneumatically folded filter assembly suspended inside. The pneumatically folded filter assembly includes two parts: a filter device and a pneumatically folded device. The filtering device includes a folded filter screen; the entire folded filter screen has multiple fold lines extending forward and backward and linearly distributed in a left-right array, and the entire folded filter screen can be folded along the fold lines; the fold lines are divided into fold line one and fold line two, wherein fold line one and fold line two are alternately distributed and the height of fold line one is always lower than the height of fold line two, and a depression is formed at the location of all fold line one, which gradually slopes down from fold line two to fold line one, and multiple uniformly distributed filter holes are linearly opened in all depressions along fold line one; The pneumatic folding device includes multiple suspension plates connected to the fold lines at the front and rear ends of the folded filter screen, suspension grooves opened on the suspension plates, suspension rods fixed at both ends to the inner wall of the filter chamber and sliding through all the suspension grooves, corrugated air pipes fitted on the suspension rods and simultaneously fixing two adjacent suspension plates, an air pump installed outside the main body of the equipment, two main air supply pipes simultaneously connected to the air pump and respectively fixed to one side of the corrugated air pipes, and auxiliary air supply pipes connecting each corrugated air pipe to the main air supply pipes. When the air pump inflates or deflates the corrugated air pipe, the suspension plate drives the entire folded filter screen to extend or fold evenly, at which time all filter holes expand or shrink synchronously.

2. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 1, characterized in that: The folded filter screen includes a top folded filter screen and a bottom folded filter screen; The difference between the top-layer pleated filter and the bottom-layer pleated filter is that the filter holes of the top-layer pleated filter are larger than those of the bottom-layer pleated filter.

3. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 1, characterized in that: The main gas delivery tube is a rigid gas tube; the auxiliary gas delivery tube is a flexible gas tube.

4. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 1, characterized in that: The filter chamber is equipped with two sets of pneumatic folding filter components; the two sets of pneumatic folding filter components are separated by an upper beam fixed in the middle of the inner wall of the filter chamber, and gradually tilt and decrease towards the front and rear sides of the upper beam.

5. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 4, characterized in that: Impurity boxes located at the bottom of the pneumatic folding filter assembly are fixed on the front and rear inner walls of the filter chamber. Drainage plates that can be flipped open and communicate with the impurity boxes are installed on the front and rear outer walls of the filter chamber. The bottom of the impurity box is a sloping bottom that slopes down towards the drainage plate.

6. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 4, characterized in that: The front and rear inner walls of the filter chamber are also fixed with guide plates that surround the pneumatic folded filter assembly; the guide plates are located above the pneumatic folded filter assembly and gradually converge and decrease towards the middle of the pneumatic folded filter assembly.

7. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 4, characterized in that: The inner wall of the filter chamber is also fixed with a protective cover located above the upper beam, and all the pneumatic folding devices built into the filter chamber are hidden under the protective cover and the guide plate.

8. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 1, characterized in that: The main body of the device has two filtration chambers inside, namely a primary filtration chamber and a secondary filtration chamber; the only difference between the primary and secondary filtration chambers is that the filter holes in the primary filtration chamber are larger than those in the secondary filtration chamber.

9. The filtration device for adjusting the pore size using a pneumatic folding method according to claim 8, characterized in that: Water pumps are installed on both the front and rear sides of the primary filtration chamber, and each water pump is connected to the top of the primary filtration chamber through a water injection pipe.

10. The filtration device for adjusting the filter pore size using a pneumatic folding method according to claim 8, characterized in that: Water pumps are installed on both the front and rear sides of the secondary filtration chamber. Each water pump is connected to the bottom of the primary filtration chamber through a lower water supply pipe and to the top of the secondary filtration chamber through an upper water supply pipe. A water pump is installed on the right side of the secondary filtration chamber, and the water pump is connected to the bottom of the secondary filtration chamber through a water pumping pipe.

Images