CN110344486B - A drainage device for field farmland experiment in coastal tidal flat reclamation area - Google Patents

Abstract

The invention discloses a drainage device for field farmland experiments in coastal tidal flat reclamation areas, and relates to the technical field of agricultural production. It includes a water absorption component, a drainage component and a water treatment component. Cleaning treatment is carried out in the assembly, the water treatment assembly includes a primary filter assembly and a sand cleaning assembly, and the drainage assembly is used to discharge the treated water to the farmland. The invention is a kind of drainage for field experiments in farmland along the tidal flat reclamation area. The device can effectively treat the saline-alkali components contained in the water source when the overall device drains water along the tidal flat reclamation area, effectively improving the production of crops, improving the practicability of the overall device, and bringing better prospects for use.

Description

A drainage device for field farmland experiment in coastal tidal flat reclamation area

technical field

The invention relates to the technical field of agricultural production, in particular to a drainage device for field farmland experiments in coastal tidal flat reclamation areas.

Background technique

Farmland drainage refers to an artificial measure that removes excess surface water, soil water and groundwater in farmland, improves the relationship between water, fertilizer, gas and heat in the soil, so as to facilitate the growth of crops. my country has a long coastline and a large proportion of plain coasts. However, the soil along the tidal flat contains more saline-alkali components, and its poor physical and chemical properties cause the growth of most plants to be inhibited to varying degrees, or even unable to survive.

The existing farmland drainage devices have certain drawbacks in use. When the existing farmland drainage devices are used for drainage along the tidal flat reclamation area, the saline-alkali components in the soil along the tidal flat may be discharged into the paddy fields, which may cause the plants to become infertile. It can be produced effectively, but the maximum output value cannot be obtained, which is inconvenient. In the process of use, it brings a certain impact. Therefore, those skilled in the art provide a drainage device for field farmland experiments along the tidal flat reclamation area to solve the problems raised in the above background art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a drainage device for field farmland experiment in coastal tidal flat reclamation area, so as to solve the problems raised in the above background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a drainage device for field farmland experiments in coastal tidal flat reclamation areas, which includes a water absorption component, a drainage component and a water treatment component, and the water absorption component is used for pumping the water in the water source into the Cleaning treatment is performed in a water treatment assembly, the water treatment assembly includes a primary filter assembly and a sand cleaning assembly, and the drainage assembly is used to discharge the treated water to the farmland.

Further, preferably, the water-absorbing assembly is arranged on a support frame, and universal wheels are fixedly installed at the four corners of the bottom end of the support frame, the water-absorbing assembly includes a water suction pipe, and the top side of the support frame is A plurality of groups of water pumping pipes are fixedly installed, a first water pump is fixedly installed on one side of the water pumping pipe, a fixing frame is fixedly installed on the side of the top of the support frame close to the water suction pipe, and one side of the inner wall of the fixing frame is fixedly installed There is a water treatment assembly, and the water treatment assembly and the suction pipe are also communicated with each other through a connecting pipe.

Further, preferably, the water treatment assembly includes a filter box, the filter box is fixed in a fixing frame, a drainage assembly is fixedly installed on one side of the outer surface of the filter box, and the connecting pipe extends into the filter box, so The top of the filter box is also provided with a feeding port.

Further, preferably, the water treatment assembly includes a primary filter assembly and a sand cleaning assembly, both of which are arranged in the filter box, the primary filter assembly includes an overflow plate, and the overflow plate It is arranged inside the filter box near the side of the connecting pipe, the overflow plate includes a left intercepting plate and a right intercepting plate, the left intercepting plate is fixed on the top of the filtering box, and the bottom of the left intercepting plate is not in contact with the bottom of the filtering box , the right intercepting plate connects the bottom and the top of the filter box, and the right intercepting plate divides the filter box into two parts, and a gap is left between the left intercepting plate and the right intercepting plate for placing the filter stone, the filter stone is composed of gauze wrapping, the right intercepting plate is also provided with through holes for introducing the water source flowing through the primary filter assembly into the sand cleaning assembly.

Further, preferably, the sand cleaning assembly includes a motor, a hoist and a filter bucket, the motor is fixed at the bottom of the filter box, and the output end of the motor extends into the interior of the filter box, and the output end of the motor is connected to the bottom of the filter bucket. Fixed connection, the hoist is fixed on the top of the filter box, the hoist is wound with a pull rope, one end of the pull rope extends into the interior of the filter box and is fixedly connected to a limit seat, the limit seat is slidably arranged on the limit rod Above, the limit rod is fixed on the filter box, and the limit rod and the filter barrel are coaxially arranged, and 1-3 elastic cleaning devices are fixed on the limit seat, and the elastic cleaning devices are used for Sweep the sand from the filter bucket.

Further, preferably, an elastic cleaning device is fixed on the limit seat, the elastic cleaning device includes a support, the support is [shaped, and one end of the support is connected to the limit seat through a connecting rod. Fixed connection, the other end of the support is fixedly provided with a sliding slot, a sliding rod is slidably arranged in the sliding slot, the sliding rod passes through the support and the sliding rod is slidably connected with the support, the sliding rod It is T-shaped, and its outer surface is sleeved with a spring I. The sliding rod is also fixedly connected with a hinge seat, and an angle-adjustable cleaning device is symmetrically arranged on the hinge seat. The cleaning device includes a cleaning head. The head is fixed on the sand cleaning seat, the sand cleaning seat is fixed on the hinge plate, one end of the hinge plate is hinged with the hinge seat, and the other end of the hinge plate is hinged with an adjusting rod, and the adjusting rod is T-shaped , and the adjusting rod is slidably arranged in the adjusting seat, the other end of the adjusting seat is hinged with the hinge seat, the adjusting seat is provided with two springs, and the outer surface of the adjusting rod is also covered with a waterproof layer.

Further, preferably, the bottom end of the limit rod is fixedly provided with a broom, the broom is cylindrical, and is in contact with the bottom of the filter barrel, a sand discharge port is provided under the filter barrel, and the filter box is The bottom is provided with an annular groove, the annular groove is provided with a sand discharge port, and the sand discharge port is provided with a plug.

Further, preferably, the drainage assembly includes a water outlet pipe, the water outlet pipe communicates with the inside and outside of the filter box, a second water pump is fixedly installed on one side of the outer surface of the water outlet pipe, and a second water pump is fixed inside the filter box corresponding to the water outlet pipe. A hose is fixedly installed on the side, the top of the filter box is a double-layer structure, the hose enters the filter box through the top of the filter box, and a filter cover is also fixedly installed at the end of the hose.

Further, as a preference, a threaded connecting rod is fixedly installed on the top of the filter cover corresponding to one side of the hose, a threaded groove is etched on one side of the hose corresponding to the threaded connecting rod, and the filter cover passes through the threaded connecting rod. Threaded connection with hose.

Further, preferably, a controller is fixedly installed on one side of the outer surface of the filter box, the first water pump, the second water pump, the motor and the hoist are all electrically connected to the controller, and the support frame, the fixing frame and the filter box are connected electrically. The outer walls are coated with a rust-removing layer.

Compared with the prior art, the beneficial effects of the present invention are:

1. The device is equipped with a multi-layer filter device, that is, the filter is filtered through the overflow plate, the filter barrel and the filter cover, so as to ensure the cleanliness of the water source. The overflow plate can be set to make water flow from the bottom of the overflow plate. Then it flows upward, and the large impurities in the water are not easy to flow upward with the water, and the impurities in the water can be further filtered by the filter stone. In addition, the user can pour the neutralizer into the filter box through the feeding port, so that Neutralize the saline-alkali components in the water source to facilitate better plant growth and improve agricultural productivity;

2. The filter bucket set in this device is driven by the motor to rotate, so that the water in the filter bucket can be quickly thrown out to achieve rapid filtration, and the sand and gravel impurities attached to the inner wall of the filter bucket are cleaned by the elastic cleaning device. The head can be in contact with the inner wall of the filter barrel at different angles, and its angle can be automatically adjusted by the second spring to ensure that the cleaning head is in contact with the inner wall of the filter barrel, and the elastic cleaning device can be driven by the hoist to slide up and down along the limit rod for comprehensive cleaning Filter bucket to improve cleaning efficiency;

3. Through the set filter cover, the water outlet pipe will not be blocked during the drainage process, that is, the filter cover can effectively block the impurities at the outer end of the hose, which is convenient for the user to drain the water effectively and continuously. When the user needs to replace the filter cover, the filter cover can be easily unscrewed or installed through the threaded connection between the threaded connecting rod and the threaded groove, which is convenient for the user to use, which is better than the traditional method.

Description of drawings

Fig. 1 is a kind of structural representation of the drainage device used in the field farmland experiment along the tidal flat reclamation area;

Fig. 2 is a kind of structural representation of the filter box in the drainage device used in the field farmland experiment in the coastal tidal flat reclamation area;

Fig. 3 is a kind of elastic cleaning device structure schematic diagram of farmland along tidal flat reclamation area;

4 is a schematic diagram of the connection structure of a hose and a filter cover in a drainage device for field farmland experiments in coastal tidal flat reclamation areas;

In the figure: 1. Supporting frame; 2. Universal wheel; 3. Pumping pipe; 4. First water pump; 5. Fixing frame; 6. Filter box; 7. Connecting pipe; 8. Controller; 9. Water outlet pipe; 10. Second water pump; 11. Feed inlet; 12. Overflow plate; 13. Pull rope; 14. Filter barrel; 15. Hose; 16. Filter cover; 17. Threaded connecting rod; , filter stone; 20, motor; 21, broom; 22, winch; 23, limit rod; 24, limit seat; 25, support; 26, connecting rod; 27, sliding rod; 28, spring one; 29, Adjusting seat; 30, sand cleaning seat; 31, spring two; 32, hinged seat; 33, adjustment rod; 34, hinged plate; 35, annular groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIGS. 1 to 4 , in an embodiment of the present invention, a drainage device for field farmland experiments in a tidal flat reclamation area includes a water absorption component, a drainage component and a water treatment component, and the water absorption component is used for pumping water from a water source into Cleaning treatment is performed in a water treatment assembly, the water treatment assembly includes a primary filter assembly and a sand cleaning assembly, and the drainage assembly is used to discharge the treated water to the farmland.

Wherein, the water absorbing assembly is arranged on the support frame 1 , the four corners of the bottom end of the support frame 1 are fixedly installed with universal wheels 2 , the water suction assembly includes a water suction pipe 3 , and the top end of the support frame 1 A plurality of groups of water pumping pipes 3 are fixedly installed on one side, a first water pump 4 (model: CDL(F)2-40) is fixedly installed on one side of the water pumping pipes 3, and the top of the support frame 1 is close to the water pumping pipes 3 A fixing frame 5 is fixedly installed on one side of the fixing frame 5 , and a water treatment assembly is fixedly installed on one side of the inner wall of the fixing frame 5 , and the water treatment assembly and the water pumping pipe 3 are also connected through a connecting pipe 7 .

In this embodiment, the water treatment assembly includes a filter box 6, the filter box 6 is fixed in the fixing frame 5, a drainage assembly is fixedly installed on one side of the outer surface of the filter box 6, and the connecting pipe 7 extends into In the filter box 6, the top of the filter box 6 is also provided with a feeding port 11, so that the whole device can be filled with a neutralizing agent through the feeding port 11, which is convenient for the user to neutralize the salinity of the water source, and more Facilitate plant growth.

Wherein, the water treatment assembly includes a primary filter assembly and a sand cleaning assembly, both of which are arranged in the filter box 6, the primary filter assembly includes an overflow plate 12, and the overflow plate 12 The overflow plate 12 includes a left intercepting plate and a right intercepting plate. The left intercepting plate is fixed on the top of the filtering box 6, and the bottom of the left intercepting plate is not connected to the filter. The bottom of the box 6 is in contact, the right intercepting plate connects the bottom and the top of the filter box 6, and the right intercepting plate divides the filter box 6 into two parts, and a gap is left between the left intercepting plate and the right intercepting plate for placing the filter The filter stone is wrapped by gauze, which is convenient for taking out or placing the filter stone as a whole. By setting the overflow plate 12, the water can flow in from the bottom of the overflow plate and then flow upward, while the large impurities in the water are not easy to move upward. It flows with the water, and the impurities in the water can be further filtered by being provided with a filter stone.

The right intercepting plate is also provided with through holes for introducing the water source flowing through the primary filter assembly into the sand cleaning assembly.

In this embodiment, the sand cleaning assembly includes a motor 20, a hoist 22 and a filter bucket 14. The motor 20 is fixed at the bottom of the filter box 6, and the output end of the motor 20 extends into the interior of the filter box 6. The motor 20 The output end of the filter barrel 14 is fixedly connected to the bottom of the filter barrel 14. By starting the motor 20, the filter barrel 14 can be driven to rotate, and the water in the filter barrel can be quickly thrown out to achieve rapid filtration. The upper end of the filter barrel 14 is designed with an opening, and the sides are A plurality of through holes are arranged to pass water, the inner wall of the filter barrel is attached with a filter screen to block sand and gravel impurities, and the sand and stone impurities attached to the inner wall of the filter barrel are cleaned by an elastic cleaning device.

In order to clean the inner wall of the filter barrel more comprehensively, the device is provided with a hoist 22, the hoist 22 is fixed on the top of the filter box 6, the hoist 22 is wound with a pull rope 13, and one end of the pull rope 13 extends into the filter box 6 is fixedly connected with a limit seat 24, the limit seat 24 is slidably arranged on the limit rod 23, the limit rod 23 is fixed on the filter box 6, and the limit rod 23 is connected to the filter barrel 14. Coaxially arranged, the limit rod 23 can be a square, preventing the limit seat 24 from rotating freely. The limit seat 24 is fixedly provided with 1-3 elastic cleaning devices, and the elastic cleaning devices are used to clean the filter barrel 14. of sand.

In this embodiment, an elastic cleaning device is fixed on the limit seat 24, and the elastic cleaning device includes a support 25, the support 25 is [-shaped, and one end of the support 25 is connected by a connecting rod 26 is fixedly connected with the limit seat 24, the other end of the support 25 is fixedly provided with a sliding slot 35, and a sliding rod 27 is slidably arranged in the sliding groove 35, and the sliding rod 27 passes through the support 25 and the The sliding rod 27 is slidably connected to the support 25. The sliding rod 27 is T-shaped, and its outer surface is sleeved with a spring 1 28. The sliding rod 27 is also fixedly connected with a hinge seat 32, which is symmetrically arranged on the hinge seat 32. There is an angle-adjustable cleaning device, the cleaning device includes a cleaning head, the cleaning head is fixed on the sand cleaning seat 30, the sand cleaning seat 30 is fixed on the hinge plate 34, and one end of the hinge plate 34 is hinged The seat 32 is hinged, and the other end of the hinge plate 34 is hinged with an adjusting rod 33, the adjusting rod 33 is T-shaped, and the adjusting rod 33 is slidably arranged in the adjusting seat 29, and the other end of the adjusting seat 29 It is hinged with the hinge seat 32, the adjusting seat 29 is provided with a spring two 31, the outer surface of the adjusting rod 33 is also covered with a waterproof layer, and the two cleaning heads can be in contact with the inner wall of the filter barrel at different angles. It can be automatically adjusted in real time through the second spring to ensure that the cleaning head is in contact with the inner wall of the filter barrel and improve the cleaning efficiency.

In addition, a broom 21 is fixedly arranged at the bottom end of the limiting rod 23, the broom 21 is cylindrical, and is in contact with the bottom of the filter barrel 14. The bottom of the filter box 6 is provided with an annular groove 35, the annular groove 35 corresponds to the movement track of the sand discharge port on the filter barrel 14, the annular groove 35 is provided with a sand discharge port, and the sand discharge port is provided on the There are plugs to discharge excess sand and other impurities after the drainage is completed.

In this embodiment, the drainage assembly includes a water outlet pipe 9 , the water outlet pipe 9 communicates with the inside and outside of the filter box 6 , and a second water pump 10 is fixedly installed on one side of the outer surface of the water outlet pipe 9 . A hose 15 is fixedly installed on the side corresponding to the water outlet pipe 9 inside. The top of the filter box 6 is a double-layer structure. The hose 15 passes through the top of the filter box 6 and enters the filter box 6. The hose The end of 15 is also fixedly installed with a filter cover 16, which can prevent the water outlet pipe 9 from being blocked.

A threaded connecting rod 17 is fixedly installed on the top of the filter cover 16 corresponding to one side of the hose 15 , a threaded groove 18 is etched on the inside of the hose 15 corresponding to the side of the threaded connecting rod 17 , and the filter cover 16 is threaded The connecting rod 17 is threadedly connected with the hose 15, which is convenient for quick replacement.

A controller 8 is fixedly installed on one side of the outer surface of the filter box 6. The first water pump 4, the second water pump 10, the motor 20 and the hoist 22 are all electrically connected to the controller 8. The support frame 1, the fixing frame 5 The outer wall of the filter box 6 is coated with a rust-removing layer to prevent the equipment from rusting and improve its service life.

In the specific implementation, the device is moved to the working position through the universal wheel, the first water pump 4 is controlled by the controller 8 to operate, and the water source is pumped into the filter box 6 provided inside the fixing frame 5 through the water pumping pipe 3 and the connecting pipe 7 During the process, the impurities in the water source are precipitated by the overflow plate 12 and the filter stone, and the user pours the neutralizer into the filter box 6 through the feeding port 11, so that the saline-alkali components in the water source can be neutralized, which is convenient for plants to be more Good growth, improve agricultural productivity, and then cooperate with the set filter barrel 14 for secondary filtration, so that the discharged water source can be more pure. There is an elastic cleaning device, and the filter bucket is driven by the motor 20. During the rotation of the filter bucket, the inner surface of the filter bucket is in contact with the cleaning head, so that the sand and gravel attached to the filter bucket 14 fall down, and the elastic cleaning device can be driven by the hoist 22. The limit rod 23 slides up and down, so as to completely clean the filter barrel 14 and improve the filtering efficiency. In order to facilitate the water outlet pipe 9 not to be blocked during the drainage process, the filter cover 16 provided by the hose 15 can effectively block the impurities in the soft area. The outer end of the pipe 15 is convenient for the user to discharge the water source from the water outlet pipe 9 through the second water pump 10, so that the drainage can be effectively and continuously drained. When the user needs to replace the filter cover 16, it can be connected by a screw thread The threaded connection of the rod 17 and the threaded groove 18 makes it convenient to unscrew or install the filter cover 16, which is convenient for the user to use, and is more practical.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. The drainage device for the field farmland experiment in the coastal beach reclamation area is characterized by comprising a water absorption component, a drainage component and a water treatment component, wherein the water absorption component is used for pumping water in a water source into the water treatment component for cleaning treatment, and the drainage component is used for discharging the treated water to the farmland;

the water suction assembly is arranged on a support frame (1), universal wheels (2) are fixedly mounted at four corners of the bottom of the support frame (1), the water suction assembly comprises water pumping pipes (3), a plurality of groups of water pumping pipes (3) are fixedly mounted at one side of the top end of the support frame (1), a first water pump (4) is fixedly mounted at one side of each water pumping pipe (3), a fixing frame (5) is fixedly mounted at one side, close to the water pumping pipes (3), of the top end of the support frame (1), a water treatment assembly is fixedly mounted at one side of the inner wall of the fixing frame (5), and the water treatment assembly is communicated with the water pumping pipes (3) through connecting pipes (7);

the water treatment assembly comprises a filter box (6), the filter box (6) is fixed in the fixing frame (5), one side of the outer surface of the filter box (6) is fixedly provided with a drainage assembly, the connecting pipe (7) extends into the filter box (6), and the top end of the filter box (6) is also provided with a feeding hole (11);

the water treatment component comprises a primary filtering component and a sand cleaning component, the primary filtering component and the sand cleaning component are both arranged in the filtering tank (6), the primary filtering component comprises an overflow plate (12), the overflow plate (12) is arranged on one side of the interior of the filtering tank (6) close to the connecting pipe (7), the overflow plate (12) comprises a left interception plate and a right interception plate, the left interception plate is fixed at the top of the filter box (6), the bottom of the left interception plate is not contacted with the bottom of the filter box (6), the right interception plate is connected with the bottom and the top of the filter box (6), the right interception plate divides the filter box (6) into two parts, a gap is left between the left interception plate and the right interception plate for placing filter stones, the filter stone is wrapped by a gauze, and the right interception plate is also provided with a through hole for introducing a water source flowing through the primary filter assembly into the sand cleaning assembly;

the sand cleaning component comprises a motor (20), a winch (22) and a filter vat (14), the motor (20) is fixed at the bottom of the filter tank (6), the output end of the motor (20) extends into the interior of the filter box (6), the output end of the motor (20) is fixedly connected with the bottom of the filter barrel (14), the winch (22) is fixed at the top of the filter box (6), the pull rope (13) is wound on the winch (22), one end of the pull rope (13) extends into the filter box (6) and is fixedly connected with a limiting seat (24), the limiting seat (24) is arranged on the limiting rod (23) in a sliding manner, the limiting rod (23) is fixed on the filter box (6), the limiting rod (23) and the filter barrel (14) are coaxially arranged, 1 elastic cleaning device is fixedly arranged on the limiting seat (24), and the elastic cleaning device is used for cleaning sand grains on the filter barrel (14);

the elastic cleaning device comprises a support (25), the support (25) is in a shape of [ shape ], one end of the support (25) is fixedly connected with a limiting seat (24) through a connecting rod (26), the other end of the support (25) is fixedly provided with a sliding groove, a sliding rod (27) is arranged in the sliding groove in a sliding mode, the sliding rod (27) penetrates through the support (25) and is connected with the support (25) in a sliding mode, the sliding rod (27) is in a T shape, a first spring (28) is sleeved on the outer surface of the sliding rod (27), a hinged seat (32) is further fixedly connected with the sliding rod (27), cleaning devices capable of being adjusted in angle are symmetrically arranged on the hinged seat (32) and comprise cleaning heads which are fixed on a sand cleaning seat (30), the sand cleaning seat (30) is fixed on the hinged plate (34), one end of the hinged plate (34) is hinged with the hinged seat (32), the other end of the hinged plate (34) is hinged with an adjusting rod (33), the adjusting rod (33) is T-shaped, the adjusting rod (33) is arranged in an adjusting seat (29) in a sliding mode, the other end of the adjusting seat (29) is hinged with a hinged seat (32), a second spring (31) is arranged in the adjusting seat (29), and a waterproof layer is further sleeved on the outer surface of the adjusting rod (33);

the bottom mounting of gag lever post (23) is provided with broom (21), broom (21) are cylindrical, and it contacts with the bottom of filter vat (14), filter vat (14) below is provided with arranges husky mouth, the below of rose box (6) is provided with annular groove (35), be provided with row husky mouth on annular groove (35), be provided with the end cap on arranging husky mouth.

2. The drainage device for coastal beach reclamation area field farmland experiments according to claim 1, characterized in that, the drainage component comprises a water outlet pipe (9), the water outlet pipe (9) communicates the inside and outside of the filter tank (6), a second water pump (10) is fixedly installed on one side of the outer surface of the water outlet pipe (9), a hose (15) is fixedly installed on one side of the inside of the filter tank (6) corresponding to the water outlet pipe (9), the top of the filter tank (6) is of a double-layer structure, the hose (15) passes through the top of the filter tank (6) to enter the filter tank (6), and a filter cover (16) is further fixedly installed on the end of the hose (15).

3. The drainage device for the coastal beach reclamation area field farmland experiment as claimed in claim 2, wherein a threaded connecting rod (17) is fixedly installed at one side of the top end of the filter mantle (16) corresponding to the hose (15), a threaded groove (18) is etched at one side of the inside of the hose (15) corresponding to the threaded connecting rod (17), and the filter mantle (16) is in threaded connection with the hose (15) through the threaded connecting rod (17).

4. The drainage device for the coastal beach reclamation area field farmland experiment as claimed in claim 1, wherein a controller (8) is fixedly installed on one side of the outer surface of the filter box (6), the first water pump (4), the second water pump (10), the motor (20) and the winch (22) are electrically connected with the controller (8), and rust removing layers are coated on the outer walls of the support frame (1), the fixing frame (5) and the filter box (6).

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