Modular intelligent sewage treatment device

Abstract

The utility model provides a modularized intelligent sewage treatment device, which belongs to the technical field of sewage treatment and comprises a filter tank, a water quality sensor is mounted on the filter tank, the filter tank is fixedly connected with an aeration cavity through a connecting pipe, an aeration mechanism is arranged in the aeration cavity, a disinfection cavity is arranged on one side of the aeration cavity, and a water outlet is formed in the other side of the aeration cavity. A first transfer mechanism is arranged between the aeration cavity and the disinfection cavity, a stirring mechanism is arranged in the disinfection cavity, and the upper end face of the disinfection cavity is fixedly connected with a controller. Through the arrangement of the water quality sensor, the controller, the connector, the electromagnetic flow valve, the first electromagnetic valve and the disinfectant tank, the water quality condition of sewage is monitored in real time, and the supply quantity of disinfectant is automatically adjusted according to the water quality condition, so that the disinfection accuracy is improved, the waste of the disinfectant and the environmental pollution are avoided, and the environmental protection is realized. The sewage treatment intelligence is improved, and the problem that a disinfectant is inconvenient to add intelligently in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a modular intelligent wastewater treatment device. Background Technology

[0002] With the rapid advancement of industrialization and urbanization, wastewater discharge has become an increasingly serious problem, placing higher demands on environmental protection and water resource recycling. Traditional wastewater treatment processes often suffer from drawbacks such as low treatment efficiency, high energy consumption, and large land area requirements, making it difficult to meet the current society's urgent need for efficient, energy-saving, and environmentally friendly wastewater treatment technologies.

[0003] A search revealed that patent application CN202122284114.1 discloses a modular sewage treatment device, including a filtration chamber, an inlet, a disinfection chamber, and a storage chamber. An electric valve is fixedly installed on one side of the filtration chamber's exterior, and a first filter screen, a second filter screen, and a third filter screen are fixedly connected to one side of the filtration chamber's interior. This invention effectively purifies sewage by incorporating first, second, and third filter screens within the filtration chamber, and activated carbon within the second filter screen and the first motor. The first filter screen effectively isolates large particles of debris from the sewage. The first motor, activated on one side of the filtration chamber, rotates a spiral shaft, causing a movable block on the spiral shaft to scrape debris from the first filter screen using a cleaning plate. The electric valve opens, allowing the debris to be discharged. However, the following drawbacks remain:

[0004] (1) In the existing technology, the sewage treatment device directly adds disinfectant to disinfect the sewage, which is inconvenient to add disinfectant intelligently according to the water quality of the sewage, resulting in poor sewage treatment effect;

[0005] (2) Existing sewage treatment methods do not allow for aeration of sewage, resulting in poor sewage treatment effect. In addition, existing technologies also use aeration pipes for aeration, but the uniformity of aeration is poor, resulting in poor aeration effect.

[0006] Therefore, we have made improvements to this and proposed a modular intelligent wastewater treatment device. Utility Model Content

[0007] The purpose of this invention is to address the current problems of inconvenience in intelligently adding disinfectants and inconvenience in uniformly aerating wastewater.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] Modular intelligent wastewater treatment devices are developed to address the aforementioned issues.

[0010] The present invention is as follows:

[0011] The device includes a filter box equipped with a water quality sensor. An aeration chamber is fixedly connected to the filter box via a connecting pipe. An aeration mechanism is installed within the aeration chamber. A disinfection chamber is located on one side of the aeration chamber. A first transfer mechanism is provided between the aeration chamber and the disinfection chamber. A stirring mechanism is installed within the disinfection chamber. A controller is fixedly connected to the upper surface of the disinfection chamber. A connector is fixedly connected to the upper surface of the disinfection chamber. An electromagnetic flow valve is fixedly connected to the upper surface of the connector. A first electromagnetic valve is fixedly connected to the upper surface of the electromagnetic flow valve. A disinfectant tank is fixedly connected to the upper surface of the first electromagnetic valve. A water storage chamber is located on one side of the disinfection chamber. A second transfer mechanism is provided between the disinfection chamber and the water storage chamber.

[0012] As a preferred embodiment of this invention, the aeration mechanism includes a mounting plate fixed inside the aeration chamber. Two first bearings are symmetrically and fixedly connected to the mounting plate. Connecting pipes are fixedly connected to the inner walls of the inner rings of each of the two first bearings. The bottom end of each connecting pipe penetrates the mounting plate and extends to the lower part. An aeration pipe is fixedly connected to the top end of each connecting pipe. A first bevel gear is fixedly connected to each connecting pipe. Two fixing plates are symmetrically and fixedly connected to the upper surface of the mounting plate. A rotating rod is rotatably connected between the two fixing plates. Both ends of the rotating rod are respectively fixedly connected to... A second bevel gear meshes with the first bevel gear. A first motor is fixedly connected to the outer wall of the aeration chamber. The drive end of the first motor passes through the aeration chamber and is fixedly connected to a connecting shaft. A third bevel gear meshes with the first bevel gear and is fixedly connected to the inner end of the connecting shaft. An air supply pipe is sleeved at the bottom end of the connecting pipe. The outer end of the air supply pipe passes through the aeration chamber and extends to the outside. An aerator is fixedly connected to the side wall of the aeration chamber away from the first motor. An air delivery pipe is fixedly connected to the output end of the aerator. The air delivery pipe is connected to the air supply pipe through a second solenoid valve.

[0013] As a preferred technical solution of this utility model, the first transfer mechanism includes a support plate fixed on the side wall of the aeration chamber, a first water pump fixedly connected to the upper end face of the support plate, a first water supply pipe fixedly connected to the input end of the first water pump, the bottom end of the first water supply pipe located inside the aeration chamber, a second water supply pipe fixedly connected to the output end of the first water pump, and the end of the second water supply pipe penetrating the top wall of the disinfection chamber and extending into its interior.

[0014] As a preferred technical solution of this utility model, the stirring mechanism includes two second bearings symmetrically fixed to the upper end face of the disinfection chamber. A stirring shaft is fixedly connected to the inner side wall of the inner ring of each of the two second bearings. The bottom end of the stirring shaft penetrates the top wall of the disinfection chamber and extends into it. A set of stirring paddles is uniformly fixedly connected to the stirring shaft. A driven bevel gear is fixedly connected to the top end of the stirring shaft. Two vertical plates are symmetrically fixedly connected to the upper end face of the disinfection chamber. A rotating shaft is rotatably connected between the two vertical plates. Two driving bevel gears, which are respectively meshed with the driven bevel gear, are fixedly connected to the rotating shaft. A second motor is fixedly connected to one of the vertical plates. The driving end of the second motor is fixedly connected to the shaft end of the rotating shaft.

[0015] As a preferred technical solution of this utility model, a second water pump is fixedly connected to the upper end face of the water storage chamber, a third water supply pipe is fixedly connected to the input end of the second water pump, the end of the third water supply pipe penetrates the top wall of the disinfection chamber and extends into its interior, and a fourth water supply pipe is fixedly connected to the output end of the second water pump, the end of the fourth water supply pipe penetrates the top wall of the water storage chamber and extends into its interior.

[0016] As a preferred technical solution of this utility model, the water quality sensor, the electromagnetic flow valve and the first electromagnetic valve are electrically connected to the controller.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the solution of this utility model:

[0019] 1. By setting up water quality sensors, controllers, connectors, electromagnetic flow valves, first electromagnetic valves, and disinfectant tanks, the water quality of wastewater can be monitored in real time, and the supply of disinfectant can be automatically adjusted according to the water quality. This not only improves the accuracy of disinfection, but also avoids waste of disinfectant and environmental pollution, improves the intelligence of wastewater treatment, and solves the problem of inconvenient intelligent addition of disinfectant in existing technologies.

[0020] 2. By setting up aeration chambers and aeration mechanisms, aeration treatment of sewage is achieved, improving the sewage treatment effect. At the same time, the aeration pipes can be rotated to perform aeration, improving the uniformity of aeration treatment and solving the problem of inconvenience in uniform aeration treatment of sewage in the existing technology. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a front view structural diagram of the present invention;

[0023] Figure 3A schematic diagram of the aeration mechanism provided by this utility model;

[0024] Figure 4 A schematic diagram of the stirring mechanism provided by this utility model;

[0025] Figure 5 A schematic diagram of the rear structure provided by this utility model;

[0026] Figure 6 This is a top view of the structure provided for this utility model.

[0027] The image shows:

[0028] 1. Filter box; 2. Water quality sensor; 3. Connecting pipe; 4. Aeration chamber; 5. Aeration mechanism; 501. Mounting plate; 502. First bearing; 503. Connecting pipe; 504. Aeration pipe; 505. First bevel gear; 506. Fixing plate; 507. Rotating rod; 508. Second bevel gear; 509. First motor; 5010. Connecting shaft; 5011. Third bevel gear; 5012. Air supply pipe; 5013. Aerator; 5014. Air delivery pipe; 5015. Second solenoid valve; 6. Disinfection chamber; 7. First transfer mechanism; 701. Support plate; 702. First water pump; 703. First water supply pipe; 704. Second water supply pipe; 8. Stirring mechanism; 801. Second bearing; 802. Stirring shaft; 803. Stirring paddle; 804. Driven bevel gear; 805. Vertical plate; 806. Rotating shaft; 807. Driven bevel gear; 808. Second motor; 9. Controller; 10. Connector; 11. Electromagnetic flow valve; 12. First solenoid valve; 13. Disinfectant tank; 14. Water storage chamber; 15. Second transfer mechanism; 1501. Second water pump; 1502. Third water supply pipe; 1503. Fourth water supply pipe. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, this embodiment proposes a modular intelligent sewage treatment device, including a filter box 1, a water quality sensor 2 installed on the filter box 1, an aeration chamber 4 fixedly connected to the filter box 1 via a connecting pipe 3, an aeration mechanism 5 provided inside the aeration chamber 4, a disinfection chamber 6 provided on one side of the aeration chamber 4, a first transfer mechanism 7 provided between the aeration chamber 4 and the disinfection chamber 6, a stirring mechanism 8 provided inside the disinfection chamber 6, a controller 9 fixedly connected to the upper end face of the disinfection chamber 6, a connector 10 fixedly connected to the upper end face of the disinfection chamber 6, and an electromagnetic flow valve 11 fixedly connected to the upper end face of the connector 10. A first solenoid valve 12 is fixedly connected to the upper end face of the first solenoid valve 12, and a disinfectant tank 13 is fixedly connected to the upper end face of the first solenoid valve 12. A water storage chamber 14 is provided on one side of the disinfection chamber 6, and a second transfer mechanism 15 is provided between the disinfection chamber 6 and the water storage chamber 14. The filtration mechanism inside the filter box 1 is existing technology and will not be described in detail here. The water quality sensor 2 can monitor the water quality of the sewage and realize intelligent treatment of sewage. The electromagnetic flow valve 11 can monitor the amount of disinfectant added and realize intelligent addition of the appropriate amount of disinfectant to the sewage, thereby improving the accuracy of sewage treatment and disinfection.

[0031] like Figure 1 and Figure 3As shown, in a preferred embodiment, based on the above method, the aeration mechanism 5 further includes a mounting plate 501 fixed inside the aeration chamber 4. Two first bearings 502 are symmetrically and fixedly connected to the mounting plate 501. Connecting pipes 503 are fixedly connected to the inner walls of the inner rings of each of the two first bearings 502. The bottom end of the connecting pipe 503 penetrates the mounting plate 501 and extends to the lower part. An aeration pipe 504 is fixedly connected to the top end of the connecting pipe 503. A first bevel gear 505 is fixedly connected to each connecting pipe 503. The upper end of the mounting plate 501 is symmetrically connected to two fixing plates 506. A rotating rod 507 is rotatably connected between the two fixing plates 506. The two ends of the rotating rod 507 are respectively fixedly connected to a second bevel gear 508 that meshes with the first bevel gear 505. A first motor 509 is fixedly connected to the outer wall of the aeration chamber 4. The drive end of the first motor 509 passes through the aeration chamber 4 and is fixedly connected to a connecting shaft 5010. The inner end of the connecting shaft 5010 is fixedly connected to a third bevel gear that meshes with the first bevel gear 505. 5011, an air supply pipe 5012 is fitted onto the bottom end of the connecting pipe 503. The outer end of the air supply pipe 5012 passes through the aeration chamber 4 and extends to the outside. An aerator 5013 is fixedly connected to the side wall of the aeration chamber 4 away from the first motor 509. An air delivery pipe 5014 is fixedly connected to the output end of the aerator 5013. The air delivery pipe 5014 is connected to the air supply pipe 5012 through the second solenoid valve 5015. The first motor 509 drives the connecting shaft 5010 to rotate, and the connecting shaft 5010 drives the third bevel gear 5011 to rotate accordingly. The third bevel gear 5011 drives the connected first bevel gear 505 to rotate. The rotation of the first bevel gear 505 drives the second bevel gear 508 and the rotating rod 507 to rotate, thereby causing the other first bevel gear 505 to rotate. This causes the two aeration pipes 504 to rotate synchronously, achieving uniform aeration. The aerator 5013 delivers gas to the connecting pipe 503 through the air conveying pipe 5014 and the air supply pipe 5012, and then flows out through the aeration pipe 504, realizing the aeration treatment of sewage and improving the sewage treatment effect.

[0032] like Figure 1 and Figure 5As shown, in a preferred embodiment, based on the above method, the first transfer mechanism 7 further includes a support plate 701 fixed to the side wall of the aeration chamber 4. A first water pump 702 is fixedly connected to the upper end of the support plate 701. A first water supply pipe 703 is fixedly connected to the input end of the first water pump 702. The bottom end of the first water supply pipe 703 is located inside the aeration chamber 4. A second water supply pipe 704 is fixedly connected to the output end of the first water pump 702. The end of the second water supply pipe 704 penetrates the top wall of the disinfection chamber 6 and extends into its interior. The first water pump 702 draws sewage from the aeration chamber 4 through the first water supply pipe 703 and transfers the sewage to the disinfection chamber 6 through the second water supply pipe 704. The first transfer mechanism 7 realizes the transfer of sewage between the aeration chamber 4 and the disinfection chamber 6, ensuring the continuity of sewage treatment.

[0033] like Figure 1 and Figure 4 As shown, in a preferred embodiment, based on the above method, the stirring mechanism 8 further includes two second bearings 801 symmetrically fixed to the upper end face of the sterilization chamber 6. A stirring shaft 802 is fixedly connected to the inner sidewall of the inner ring of each of the two second bearings 801. The bottom end of the stirring shaft 802 penetrates the top wall of the sterilization chamber 6 and extends inward therefrom. A set of stirring paddles 803 are uniformly fixedly connected to the stirring shaft 802. A driven bevel gear 804 is fixedly connected to the top end of the stirring shaft 802. Two vertical plates 805 are symmetrically fixedly connected to the upper end face of the sterilization chamber 6. A rotating shaft 806 is rotatably connected between the two vertical plates 805. Two driving bevel gears 807 are fixedly connected to the shaft 806 and respectively mesh with the driven bevel gear 804. A second motor 808 is fixedly connected to one of the vertical plates 805. The driving end of the second motor 808 is fixedly connected to the shaft end of the rotating shaft 806. The second motor 808 drives the rotating shaft 806 to rotate, and the driving bevel gears 807 on the rotating shaft 806 also rotate. The rotation of the driving bevel gears 807 drives the driven bevel gears 804 to rotate, thereby causing the stirring shaft 802 to rotate. The rotation of the stirring shaft 802 will drive the stirring paddle 803 to rotate, thereby enabling the disinfectant and sewage to be fully mixed.

[0034] like Figure 1 and Figure 5As shown, in a preferred embodiment, based on the above method, a second water pump 1501 is fixedly connected to the upper end face of the water storage chamber 14. A third water supply pipe 1502 is fixedly connected to the input end of the second water pump 1501. The end of the third water supply pipe 1502 penetrates the top wall of the disinfection chamber 6 and extends into its interior. A fourth water supply pipe 1503 is fixedly connected to the output end of the second water pump 1501. The end of the fourth water supply pipe 1503 penetrates the top wall of the water storage chamber 14 and extends into its interior. The second water pump 1501 draws disinfected wastewater from the disinfection chamber 6 through the third water supply pipe 1502 and transfers the wastewater to the water storage chamber 14 for storage through the fourth water supply pipe 1503. This realizes the transfer of wastewater between the disinfection chamber 6 and the water storage chamber 14, which facilitates the storage and reuse of wastewater.

[0035] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the water quality sensor 2, the electromagnetic flow valve 11, and the first electromagnetic valve 12 are further electrically connected to the controller 9; the water quality sensor 2 monitors the water quality in the filter box 1 in real time and sends the data to the controller 9. The controller 9 controls the opening and closing states of the electromagnetic flow valve 11 and the first electromagnetic valve 12 according to the received data, and can also adjust the aeration rate.

[0036] Specifically, in use, this modular intelligent sewage treatment device works as follows: sewage is filtered through filter box 1; water quality sensor 2 monitors the water quality and sends the data to controller 9; sewage enters aeration chamber 4 through connecting pipe 3; aerator 5013 delivers gas to connecting pipe 503 through air supply pipe 5014 and air delivery pipe 5012, and then flows out through aeration pipe 504; controller 9 controls the opening of second solenoid valve 5015 according to water quality; first motor 509 drives connecting shaft 5010 to rotate; connecting shaft 5010 drives third bevel gear 5011 to rotate; third bevel gear 5011 drives connected first bevel gear 505 to rotate; rotation of first bevel gear 505 drives second bevel gear 508 and rotating rod 507 to rotate, thereby causing another first bevel gear 505 to rotate, thus causing the two aeration pipes 504 to rotate synchronously, achieving uniform aeration; after aeration... After treatment, the first water pump 702 draws wastewater from the aeration chamber 4 through the first water supply pipe 703 and transfers the wastewater to the disinfection chamber 6 through the second water supply pipe 704. The controller 9 controls the opening of the electromagnetic flow valve 11 and the first electromagnetic valve 12, adding a certain amount of disinfectant to the disinfection chamber 6 according to the water quality. Then, the second motor 808 drives the rotating shaft 806 to rotate, and the active bevel gear 807 on the rotating shaft 806 also rotates. The rotation of the active bevel gear 807 drives the driven bevel gear 804 to rotate, thereby causing the stirring shaft 802 to rotate. The rotation of the stirring shaft 802 drives the stirring paddle 803 to rotate, thus enabling the disinfectant and wastewater to be fully mixed. The second water pump 1501 draws the disinfected wastewater from the disinfection chamber 6 through the third water supply pipe 1502 and then transfers the wastewater to the storage chamber 14 through the fourth water supply pipe 1503 for storage, realizing the transfer of wastewater between the disinfection chamber 6 and the storage chamber 14.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A modular intelligent sewage treatment device comprising a filter tank (1), characterized in that, The water quality sensor (2) is installed on the filter box (1), the filter box (1) is fixedly connected with the aeration cavity (4) through the connecting pipe (3), the aeration mechanism (5) is arranged in the aeration cavity (4), one side of the aeration cavity (4) is provided with the disinfection cavity (6), the first transfer mechanism (7) is arranged between the aeration cavity (4) and the disinfection cavity (6), the stirring mechanism (8) is arranged in the disinfection cavity (6), the controller (9) is fixedly connected to the upper end surface of the disinfection cavity (6), the connector (10) is fixedly connected to the upper end surface of the disinfection cavity (6), the electromagnetic flow valve (11) is fixedly connected to the upper end surface of the connector (10), the first electromagnetic valve (12) is fixedly connected to the upper end surface of the electromagnetic flow valve (11), the disinfection liquid tank (13) is fixedly connected to the upper end surface of the first electromagnetic valve (12), one side of the disinfection cavity (6) is provided with the water storage cavity (14), and the second transfer mechanism (15) is arranged between the disinfection cavity (6) and the water storage cavity (14).

2. The modular intelligent sewage treatment device according to claim 1, characterized in that, The aeration mechanism (5) comprises a mounting plate (501) fixed in the aeration cavity (4), two first bearings (502) are fixedly connected to the mounting plate (501) in a symmetrical manner, a connecting pipe (503) is fixedly connected to the inner wall of the inner ring of each first bearing (502), the bottom end of the connecting pipe (503) penetrates the mounting plate (501) and extends to the lower part, an aeration pipe (504) is fixedly connected to the top end of the connecting pipe (503), a first bevel gear (505) is fixedly connected to the connecting pipe (503), two fixed plates (506) are fixedly connected to the upper end surface of the mounting plate (501) in a symmetrical manner, a rotating rod (507) is rotatably connected between the two fixed plates (506), second bevel gears (508) meshed with the first bevel gears (505) are fixedly connected to the two ends of the rotating rod (507), a first motor (509) is fixedly connected to the outer wall of the aeration cavity (4), a connecting shaft (5010) is fixedly connected to the driving end of the first motor (509) and penetrates the aeration cavity (4), a third bevel gear (5011) meshed with the first bevel gear (505) is fixedly connected to the inner end of the connecting shaft (5010), a gas supply pipe (5012) is arranged in the bottom end of the connecting pipe (503), the outer end of the gas supply pipe (5012) penetrates the aeration cavity (4) and extends to the outside, an aerator (5013) is fixedly connected to the side wall of the aeration cavity (4) away from the first motor (509), a gas supply pipe (5014) is fixedly connected to the output end of the aerator (5013), and the gas supply pipe (5014) is connected with the gas supply pipe (5012) through a second electromagnetic valve (5015).

3. The modular intelligent sewage treatment device according to claim 1, characterized in that, The first transfer mechanism (7) comprises a bearing plate (701) fixed on the side wall of the aeration chamber (4), the upper end surface of the bearing plate (701) is fixedly connected with a first water pump (702), the input end of the first water pump (702) is fixedly connected with a first water pipe (703), the bottom end of the first water pipe (703) is located in the aeration chamber (4), the output end of the first water pump (702) is fixedly connected with a second water pipe (704), and the end of the second water pipe (704) penetrates through the top wall of the disinfection chamber (6) and extends into the disinfection chamber (6).

4. The modular intelligent sewage treatment device according to claim 1, characterized in that, The stirring mechanism (8) comprises two second bearings (801) which are symmetrical and fixed on the upper end surface of the disinfection chamber (6), the inner wall of the inner ring of the two second bearings (801) is fixedly connected with a stirring shaft (802), the bottom end of the stirring shaft (802) penetrates through the top wall of the disinfection chamber (6) and extends into the disinfection chamber (6), a group of stirring paddles (803) are uniformly fixed on the stirring shaft (802), the top end of the stirring shaft (802) is fixedly connected with a driven bevel gear (804), the upper end surface of the disinfection chamber (6) is fixedly connected with two vertical plates (805), the two vertical plates (805) are rotatably connected with a rotating shaft (806), the rotating shaft (806) is fixedly connected with two driving bevel gears (807) which are meshed with the driven bevel gear (804), one of the vertical plates (805) is fixedly connected with a second motor (808), and the driving end of the second motor (808) is fixedly connected with the shaft end of the rotating shaft (806).

5. The modular intelligent sewage treatment device according to claim 1, wherein, The upper end surface of the water storage cavity (14) is fixedly connected with a second water pump (1501), the input end of the second water pump (1501) is fixedly connected with a third water pipe (1502), the end of the third water pipe (1502) penetrates through the top wall of the disinfection chamber (6) and extends into the disinfection chamber (6), the output end of the second water pump (1501) is fixedly connected with a fourth water pipe (1503), and the end of the fourth water pipe (1503) penetrates through the top wall of the water storage cavity (14) and extends into the water storage cavity (14).

6. The modular intelligent sewage treatment device according to claim 1, wherein, The water quality sensor (2), the electromagnetic flow valve (11) and the first electromagnetic valve (12) are electrically connected with the controller (9).

Images