A production method of a slow-release carbon source

Abstract

The present application discloses a production method of a slow-release carbon source, belonging to the technical field of slow-release carbon sources. The key points of its technical solution are that the specific steps include: S1, weighing corncobs, peanut shells, wheat straws, rice husks, wood chips, and straws, crushing them into fragments with a length of 0.1 - 0.5 cm, drying, and putting them into a muffle furnace for pyrolysis under anaerobic conditions to obtain carbonized fibers; S2, weighing carbonized fibers, carbon nanotubes, diatomite, magnesian clay, quartz powder, and calcium carbonate, adding them to a mixer and mixing evenly to obtain a mixture; S3, placing the mixture in a screw extruder to extrude a cylindrical material, and placing the cylindrical material in a granulating device to form circular materials through the granulating device; S4, spreading the circular materials for aging treatment, and drying the materials after aging in a dryer to obtain the required carbon source. The present application provides a production method of a slow-release carbon source, which has good carbon release performance, a relatively high specific surface area of the microbial carrier, and will not cause secondary pollution to the water body.

Description

Technical Field

[0001] The present application belongs to the technical field of slow-release carbon sources, and in particular relates to a method for producing a slow-release carbon source. Background Art

[0002] At present, with the improvement of effluent standards of urban sewage treatment plants, the treatment of black and odorous rivers, the treatment of rural domestic sewage, the purification of aquaculture wastewater and landscape construction, all require the construction of supporting wetlands. The wetland purification system purifies water through the processes of plant absorption, microbial degradation, physical adsorption and chemical precipitation under the joint action of plants, soil (filler) and microorganisms. However, since traditional wetland technology mostly uses filler layers mainly composed of soil and sand, there are problems such as low treatment load, low TN and TP removal rate and easy clogging. Although the treatment load of the system can be increased by taking measures such as forced aeration and phased water inflow, it is still difficult to improve the total nitrogen removal efficiency, mainly because the denitrification effect is inhibited. There are several reasons for this: (1) insufficient carbon source; (2) easy clogging, small specific surface area of microbial carrier; (3) insufficient number of denitrifying bacteria.

[0003] A Chinese patent with publication number CN111362416A discloses a slow-release carbon source filler comprising the following ingredients by weight: 20-50 parts of micro-carbonized fiber, 40-60 parts of polyethylene terephthalate, 10-15 parts of iron ore powder, 5-10 parts of carbon nanotubes, 5-10 parts of diatomaceous earth, 1-10 parts of a compatibilizer, and 1-10 parts of a lubricant. The raw materials are weighed according to the measured ratio and added to a mixer for uniform mixing. The mixture is then added to a twin-screw extruder, heated and melted, and extruded with air blowing at 5-15 L / L·min at the extrusion end. The extrusion die has a diameter of 1-5 cm. The extrudate is cooled and cut into pieces of 1-10 cm in length.

[0004] The above slow-release carbon source is composited with organic matter, which will cause certain secondary pollution to the water body after slow release. The existing slow-release carbon source directly uses natural solid materials, which is easy to cause the accumulation of nitrite nitrogen in the later stage due to insufficient slow-release carbon, and the residual lignin is difficult to degrade. Summary of the Invention

[0005] The purpose of this application is to address the above-mentioned technical problems and provide a method for producing a slow-release carbon source, which has good carbon release performance, a higher specific surface area of the microbial carrier, and will not cause secondary pollution to the water body.

[0006] The present application provides a method for producing a slow-release carbon source, the specific steps of which include:

[0007] S1, weighing corn cobs, peanut shells, wheat straw, rice husks, sawdust, and straw into pieces with a length of 0.1-0.5 cm, drying them, and placing them in a muffle furnace for anaerobic pyrolysis to obtain carbonized fibers;

[0008] S2, Weigh carbonized fiber, carbon nanotubes, diatomite, magnesian clay, quartz powder, and calcium carbonate, add them to a mixer, and mix evenly to obtain a mixture.

[0009] S3, Place the mixture in a screw extruder, extrude a cylindrical material, place the cylindrical material in a granulating device, and form circular materials through the granulating device.

[0010] S4, Spread out and age the circular materials, place the aged materials in a dryer for drying to obtain the required carbon source.

[0011] By pyrolyzing corncobs, peanut shells, wheat straws, rice husks, wood chips, and straws into carbonized fibers, which have good carbon release performance, low price, and wide sources. Making the carbon source into a circular shape can provide a carrier with a large specific surface area for microorganisms, and at the same time avoid the problem of difficult degradation of late cellulose caused by directly putting plant solid carbon sources.

[0012] Further, the granulating device includes:

[0013] An upper plate member provided with an upper die groove;

[0014] A lower plate member provided with a lower die groove;

[0015] A mounting seat connected to the lower plate member for installation;

[0016] A mounting frame movably connected to the mounting seat;

[0017] A driving mechanism for driving the lower plate member to move;

[0018] A feeding mechanism placed on the upper plate member;

[0019] A cutting mechanism for cutting the cylindrical material;

[0020] Among them, the lower plate members are hinged to each other, and the upper die groove and the lower die groove correspond to each other.

[0021] By placing the cylindrical material in the feeding mechanism, the feeding mechanism places the material on the lower plate member. Under the drive of the driving mechanism, the lower plate member and the upper plate member move relative to each other to divide and granulate the material, and form circular materials. The mounting seat is used to mount the lower plate member. The mounting frame is in a rounded rectangular shape, enabling the mounting seat to move on the mounting frame. The granulating device is connected to the screw extruder, and the extruded cylindrical material is cut by the cutting mechanism. The cross-sections of the upper die groove and the lower die groove are arc-shaped.

[0022] Further, the driving mechanism includes:

[0023] A driving motor;

[0024] The driving gear is installed on the output shaft of the driving motor;

[0025] The driving rack is installed on the lower plate member and is adapted to the driving gear;

[0026] Among them, the driving racks between adjacent lower plate members are adapted to each other.

[0027] The driving motor drives the driving gear to rotate. When the lower plate members are arranged in a straight line segment, the driving racks on them are spliced with each other, and the driving gear and the driving rack can cooperate well.

[0028] Further, the feeding mechanism includes:

[0029] The feeding roller, on the periphery of which a feeding groove is provided;

[0030] The movable seat is hinged to the upper plate member;

[0031] The first motor is used to drive the movable seat to rotate;

[0032] The bracket is installed and connected to the feeding roller and is connected to the movable seat through a bearing;

[0033] The first sprocket is movably installed on the bracket;

[0034] The chain is adapted to the first sprocket;

[0035] The second motor is provided with a second sprocket and is adapted to the chain;

[0036] The shaft body is installed and connected to the first sprocket and is placed inside the bracket;

[0037] The first bevel gear is installed on the shaft body;

[0038] The second bevel gear is installed on the bracket and is adapted to the first bevel gear;

[0039] The commutation mechanism is used to rotate the bracket;

[0040] The extension mechanism is placed on the bracket;

[0041] Among them, the second bevel gear is provided with a first tooth part, the feeding roller is provided with a second tooth part, and the first tooth part is adapted to the second tooth part.

[0042] When the cylindrical material is extruded from the screw extruder, it is picked up by the feeding roller and assisted in transportation. The feeding roller is driven by the second motor and transmitted through the first sprocket, chain, second sprocket, shaft body, first bevel gear, second bevel gear, first tooth part, and second tooth part to realize the rotation of the feeding roller. The movable seat is rotated by the first motor to pour the material placed on the feeding roller onto the upper plate member. Then, the feeding roller is rotated 90° through the reversing mechanism, and the extending mechanism acts on the material. The material is assisted in being pushed between the upper plate member and the lower plate member by the rotation of the feeding roller.

[0043] Further, the reversing mechanism includes:

[0044] The first air cylinder is placed on the movable seat;

[0045] The telescopic member is installed on the first air cylinder;

[0046] The connecting member is hinged to the telescopic member;

[0047] Wherein, the bracket is provided with an installation hole, and the connecting member is movably inserted into the installation hole.

[0048] The telescopic member is driven by the first air cylinder to move along the axial direction. Through the hinge between the connecting member and the telescopic member, the connecting member rotates, and at the same time, the bracket rotates to realize an angle of 90° rotation of the bracket. The connecting member is movably connected to the installation hole, facilitating the relative telescopic movement during the angle rotation.

[0049] Further, the extending mechanism includes:

[0050] The socket is placed on the bracket;

[0051] The second air cylinder is placed between the bracket and the socket;

[0052] Wherein, the shaft body includes a cross groove and a cross insertion part.

[0053] The second air cylinder drives the bracket to expand and contract, realizing the expansion and contraction of the feeding roller. The shaft body can ensure stable rotation during the expansion and contraction of the feeding roller through the cooperation between the cross groove and the cross insertion part.

[0054] Further, the cutting mechanism includes:

[0055] The third air cylinder;

[0056] The cutter is installed on the third air cylinder;

[0057] Wherein, the cutter is placed on one side of the movable seat.

[0058] The cutter is driven to move by the third air cylinder to cut the cylindrical material.

[0059] Further, the granulation equipment further includes:

[0060] A material receiving trough;

[0061] A scraping plate, which is installed and connected to the material receiving trough and is adapted to the lower plate member.

[0062] The granulated material falls into the material receiving trough as the lower plate moves. For the material that may adhere to the lower plate, it is scraped off by the scraping plate and guided into the material receiving trough.

[0063] The beneficial effects of this application are:

[0064] 1. By using corncobs, peanut shells, wheat straws, rice husks, wood chips, and straws pyrolyzed into carbonized fibers, which have good carbon release performance, low price, and wide sources, the carbon source is made into a round shape to provide a carrier with a large specific surface area for microorganisms.

[0065] 2. By placing the cylindrical material in the feeding mechanism, the feeding mechanism places the material on the lower plate member. Under the drive of the drive mechanism, the lower plate member and the upper plate member move relative to each other to divide and granulate the material, forming a round material.

[0066] 3. When the cylindrical material is extruded from the screw extruder, it is picked up by the feeding roller and assisted in transportation. The feeding roller is driven by the second motor to rotate the feeding roller. The movable seat is driven by the first motor to rotate, and the material placed on the feeding roller is poured onto the upper plate member. Then, the feeding roller is rotated 90° through the reversing mechanism, and the extending mechanism acts on the material. The material is pushed into the space between the upper plate member and the lower plate member by the rotation of the feeding roller. Description of the Drawings

[0067] Figure 1 It is a schematic structural diagram of the granulation equipment of this application;

[0068] Figure 2 It is a schematic structural diagram of the feeding mechanism of this application;

[0069] Figure 3 It is a schematic structural diagram of the feeding roller of this application;

[0070] Figure 4 It is a schematic structural diagram of the reversing mechanism of this application;

[0071] In the figure, the reference numerals are as follows: 001, granulation equipment; 100, upper plate member; 110, upper mold groove; 120, material receiving groove; 130, scraping plate; 200, lower plate member; 210, lower mold groove; 300, mounting bracket; 400, driving mechanism; 410, driving motor; 420, driving gear; 430, driving rack; 500, feeding mechanism; 510, feeding roller; 511, feeding groove; 512, second tooth portion; 520, movable seat; 530, first motor; 540, bracket; 541, second bevel gear; 542, first tooth portion; 550, first sprocket; 551, shaft body; 552, first bevel gear; 560, chain; 570, second motor; 571, second sprocket; 600, cutting mechanism; 610, third cylinder; 620, cutter; 700, commutation mechanism; 710, first cylinder; 720, telescopic member; 730, connecting member; 740, mounting hole; 800, extending mechanism; 810, socket; 820, second cylinder; 830, cross plugging portion; 840, cross groove. Detailed implementation manners

[0072] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0073] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0074] Next, the embodiments of the present application will be described in detail in conjunction with the accompanying drawings through specific embodiments and their application scenarios.

[0075] Embodiment 1:

[0076] The embodiment of the present application provides a production method of a slow-release carbon source, and the specific steps include:

[0077] S1, weigh corn cob, peanut shell, wheat straw, rice husk, wood chip, and straw, crush them into fragments with a length of 0.1 - 0.5 cm, dry them, and put them into a muffle furnace for pyrolysis under anoxic conditions to obtain carbonized fibers;

[0078] S2, Weigh carbonized fiber, carbon nanotubes, diatomite, magnesian clay, quartz powder, and calcium carbonate, add them to a mixer, and mix evenly to obtain a mixture.

[0079] S3, Place the mixture in a screw extruder to extrude a cylindrical material. Place the cylindrical material in granulation equipment 001 and form circular materials through granulation equipment 001.

[0080] S4, Spread out and age the circular materials. Place the aged materials in a dryer to dry and obtain the required carbon source.

[0081] By pyrolyzing corncobs, peanut shells, wheat straws, rice husks, wood chips, and straws into carbonized fibers, they have good carbon release performance, low price, and wide sources. Making the carbon source into a circular shape can provide a carrier with a large specific surface area for microorganisms, and at the same time avoid the problem of difficult degradation of late cellulose caused by directly putting plant solid carbon sources.

[0082] Example 2:

[0083] As Figure 1 、 Figure 2 shown, the embodiment of the present application provides a production method of a slow-release carbon source. In addition to including the above technical features, further, the granulation equipment 001 includes:

[0084] An upper plate member 100 provided with an upper die groove 110;

[0085] A lower plate member 200 provided with a lower die groove 210;

[0086] A mounting seat, which is installed and connected to the lower plate member 200;

[0087] A mounting frame 300, which is movably connected to the mounting seat;

[0088] A driving mechanism 400 for driving the lower plate member 200 to move;

[0089] A feeding mechanism 500 placed on the upper plate member 100;

[0090] A cutting mechanism 600 for cutting the cylindrical material;

[0091] Among them, the lower plate members 200 are hinged to each other, and the upper die groove 110 and the lower die groove 210 correspond to each other.

[0092] By placing the cylindrical material in the feeding mechanism 500, the material is placed on the lower plate member 200 through the feeding mechanism 500. Under the drive of the drive mechanism 400, the relative movement between the lower plate member 200 and the upper plate member 100 is carried out to divide and granulate the material, and a circular material is formed. The mounting seat is used to mount the lower plate member 200. The mounting frame 300 is in the shape of a rounded rectangle, and the mounting seat is placed on the mounting frame 300 for movement. The granulation device 001 is connected to a screw extruder, and the extruded cylindrical material is cut by the cutting mechanism 600. The cross-sections of the upper die groove 110 and the lower die groove 210 are arc-shaped.

[0093] Example 3:

[0094] As Figure 1 shown, the embodiment of the present application provides a production method of a slow-release carbon source. In addition to including the above technical features, further, the drive mechanism 400 includes:

[0095] A drive motor 410;

[0096] A drive gear 420, installed on the output shaft of the drive motor 410;

[0097] A drive rack 430, installed on the lower plate member 200 and adapted to the drive gear 420;

[0098] Among them, the drive racks 430 between adjacent lower plate members 200 are adapted to each other.

[0099] The drive motor 410 drives the drive gear 420 to rotate. When the lower plate members 200 are arranged in a straight line segment, the drive racks 430 on them are spliced with each other, and the drive gear 420 and the drive rack 430 can cooperate well.

[0100] Example 4:

[0101] As Figures 2-4 shown, the embodiment of the present application provides a production method of a slow-release carbon source. In addition to including the above technical features, further, the feeding mechanism 500 includes:

[0102] A feeding roller 510, with a feeding groove 511 provided on its periphery;

[0103] A movable seat 520, hinged to the upper plate member 100;

[0104] A first motor 530, used to drive the movable seat 520 to rotate;

[0105] A bracket 540, installed and connected to the feeding roller 510, and connected to the movable seat 520 through a bearing;

[0106] A first sprocket 550, movably installed on the bracket 540;

[0107] A chain 560 adapted to the first sprocket wheel 550;

[0108] A second motor 570 provided with a second sprocket wheel 571 and adapted to the chain 560;

[0109] A shaft body 551 mounted and connected to the first sprocket wheel 550 and placed inside the bracket 540;

[0110] A first bevel gear 552 mounted on the shaft body 551;

[0111] A second bevel gear 541 mounted on the bracket 540 and adapted to the first bevel gear 552;

[0112] A commutation mechanism 700 for rotating the bracket 540;

[0113] An extending mechanism 800 placed on the bracket 540;

[0114] Wherein, the second bevel gear 541 is provided with a first tooth part 542, the feeding roller 510 is provided with a second tooth part 512, and the first tooth part 542 is adapted to the second tooth part 512.

[0115] When cylindrical materials are extruded from the screw extruder, they are picked up by the feeding roller 510 and assisted in transportation. The feeding roller 510 is driven by the second motor 570, and is transmitted through the first sprocket wheel 550, the chain 560, the second sprocket wheel 571, the shaft body 551, the first bevel gear 552, the second bevel gear 541, the first tooth part 542, and the second tooth part 512 to realize the rotation of the feeding roller 510. The movable seat 520 is rotated by the first motor 530 to pour the materials placed on the feeding roller 510 onto the upper plate member 100. Then, the commutation mechanism 700 is used to rotate the feeding roller 510 by 90°. The extending mechanism 800 acts on the materials, and the materials are assisted to be pushed between the upper plate member 100 and the lower plate member 200 by the rotation of the feeding roller 510.

[0116] Further, the commutation mechanism 700 includes:

[0117] A first air cylinder 710 placed on the movable seat 520;

[0118] An expansion member 720 mounted on the first air cylinder 710;

[0119] A connecting member 730 hinged to the expansion member 720;

[0120] Wherein, the bracket 540 is provided with a mounting hole 740, and the connecting member 730 is movably inserted into the mounting hole 740.

[0121] The telescopic member 720 is driven by the first cylinder 710 to move along the axial direction. Through the hinge connection between the connecting member 730 and the telescopic member 720, the connecting member 730 rotates. At the same time, the rotating bracket 540 is rotated to achieve a 90° angle rotation of the bracket 540. The connecting member 730 is movably connected to the mounting hole 740, facilitating the relative telescopic movement during angle rotation.

[0122] Further, the extending mechanism 800 includes:

[0123] A socket 810 placed on the bracket 540;

[0124] A second cylinder 820 placed between the bracket 540 and the socket 810;

[0125] Among them, the shaft body 551 includes a cross groove 840 and a cross insertion part 830.

[0126] The second cylinder 820 drives the bracket 540 to expand and contract, realizing the expansion and contraction of the feeding roller 510. The shaft body 551 can ensure stable rotation when the feeding roller 510 expands and contracts through the cooperation between the cross groove 840 and the cross insertion part 830.

[0127] Further, the cutting mechanism 600 includes:

[0128] A third cylinder 610;

[0129] A cutter 620 mounted on the third cylinder 610;

[0130] Among them, the cutter 620 is placed on one side of the movable seat 520.

[0131] The third cylinder 610 drives the cutter 620 to move, realizing the cutting of the cylindrical material.

[0132] Embodiment 5:

[0133] As Figure 1 shown, the embodiment of the present application provides a production method of a slow-release carbon source. In addition to including the above technical features, further, the granulation device 001 further includes:

[0134] A receiving trough 120;

[0135] A scraping plate 130, which is installed and connected to the receiving trough 120 and is adapted to the lower plate member 200.

[0136] The granulated material falls into the receiving trough 120 as the lower plate moves. The material that may adhere to the lower plate is scraped off by the scraping plate 130 and guided to fall into the receiving trough 120.

[0137] It should be noted that in this text, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0138] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A method for producing a slow-release carbon source, characterized in that: The specific steps include: S1, weighing corn cobs, peanut shells, wheat straw, rice husks, sawdust, and straw into pieces with a length of 0.1-0.5 cm, drying them, and placing them in a muffle furnace for anaerobic pyrolysis to obtain carbonized fibers; S2, weighing carbon fiber, carbon nanotubes, diatomaceous earth, magnesia clay, quartz powder, and calcium carbonate, adding them to a mixer and mixing them evenly to obtain a mixture; S3, placing the mixed material in a screw extruder to extrude a cylindrical material, placing the cylindrical material in a granulating device (001), and forming a round material through the granulating device (001); S4, spreading the round material flat and aging it, and drying the aged material in a dryer to obtain the desired carbon source; The granulation equipment (001) comprises: An upper plate (100) is provided with an upper groove (110); A lower plate (200) is provided with a lower groove (210); A mounting seat, mounted and connected to the lower plate (200); A mounting frame (300) movably connected to the mounting seat, the mounting frame being in the shape of a rounded rectangle; A driving mechanism (400) for driving the lower plate (200) to move; A loading mechanism (500) is placed on the upper plate (100); A cutting mechanism (600) for cutting the cylindrical material; Wherein, the lower plates (200) are hinged to each other, and the upper grooves (110) and the lower grooves (210) correspond to each other; The driving mechanism (400) comprises: Drive motor (410); A driving gear (420) is mounted on the output shaft of the driving motor (410); A driving rack (430) is mounted on the lower plate (200) and is adapted to the driving gear (420); The driving motor (410) drives the driving gear (420) to rotate, and when the lower plate (200) is arranged in a straight line, the driving racks (430) thereon are spliced together; The feeding mechanism (500) comprises: A feeding roller (510) having a feeding trough (511) provided on its periphery; A movable seat (520) is hinged to the upper plate (100); A first motor (530) is used to drive the movable seat (520) to rotate; The bracket (540) is mounted and connected to the feeding roller (510), and is connected to the movable seat (520) via a bearing; A first sprocket (550) is movably mounted on the bracket (540); A chain (560) adapted to the first sprocket (550); A second motor (570) is provided with a second sprocket (571), and the second sprocket (571) is adapted to the chain (560); A shaft (551) is mounted and connected to the first sprocket (550) and is placed in the bracket (540); A first bevel gear (552) is mounted on the shaft (551); The second bevel gear (541) is mounted on the bracket (540) and is adapted to fit the first bevel gear (552); A reversing mechanism (700) for rotating the bracket (540); An extension mechanism (800) is placed on the bracket (540); The extending mechanism (800) comprises: A sleeve (810) is placed on the bracket (540); The second cylinder (820) is placed between the bracket (540) and the sleeve (810); Wherein, the shaft body (551) includes a cross groove (840) and a cross plug-in portion (830); The second bevel gear (541) is provided with a first tooth portion (542), the loading roller (510) is provided with a second tooth portion (512), and the first tooth portion (542) is adapted to the second tooth portion (512).

2. The method for producing a slow-release carbon source according to claim 1, wherein: The reversing mechanism (700) comprises: A first cylinder (710) is placed on a movable seat (520); A telescopic member (720) is mounted on the first cylinder (710); A connecting member (730) is hinged to the telescopic member (720); The bracket (540) is provided with a mounting hole (740), and the connecting member (730) is movably plugged into the mounting hole (740).

3. The method for producing a slow-release carbon source according to claim 2, wherein: The cutting mechanism (600) comprises: Third cylinder (610); A cutter (620) is mounted on the third cylinder (610); The cutter (620) is placed on one side of the movable seat (520).

4. The method for producing a slow-release carbon source according to claim 3, wherein: The granulation equipment (001) further comprises: receiving trough (120); The scraper plate (130) is connected to the receiving trough (120) and is adapted to the lower plate (200).

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