CN108930237B

CN108930237B - Gravity settling chamber of garbage sweeper

Info

Publication number: CN108930237B
Application number: CN201810889016.0A
Authority: CN
Inventors: 徐明杰
Original assignee: Beijing Haidian District Municipal Services Group Co ltd
Current assignee: Beijing Haidian District Municipal Services Group Co.,Ltd.
Priority date: 2018-08-07
Filing date: 2018-08-07
Publication date: 2021-03-26
Anticipated expiration: 2038-08-07
Also published as: CN108930237A

Abstract

The invention discloses a gravity settling chamber of a garbage sweeper, which comprises a settling tank, wherein the bottom of the settling tank is fixedly connected with a motor box, a motor is fixedly connected inside the motor box, the top end of an output shaft of the motor penetrates through the settling tank and extends into the settling tank, fan blades are fixedly connected on the surface of the output shaft of the motor and positioned inside the settling tank, and a conical filter hopper is fixedly connected to the top end of the output shaft of the motor. This gravity settling chamber of garbage sweeper, it can drive flabellum and toper filter hopper rotation simultaneously to utilize the motor, the flabellum rotates and can blows the dust downwards, but toper filter hopper filtration air, and rotate the back at a high speed, can get rid of the moist dust of surface adhesion to the outside, keep surperficial relatively clean, can filter for a long time, cooperation dust collecting bucket can be more convenient carry out the dust and collect, and utilize the cooperation of screw post and mounting plate, fixed dust collecting bucket that can be convenient, make its convenient to detach, high durability and convenient use.

Description

Gravity settling chamber of garbage sweeper

Technical Field

The invention relates to the technical field of garbage sweeper, in particular to a gravity settling chamber of a garbage sweeper.

Background

The sweeper is a novel efficient sweeping device integrating road surface sweeping, garbage recycling and transporting. The road sweeper is vehicle-shaped equipment suitable for omnibearing sweeping work of pavements such as factories, highways, parks, squares and the like. The novel vehicle type can complete the work of cleaning the ground, cleaning the curb of the road, sprinkling water to the ground after cleaning and the like at one time, and is suitable for cleaning operation of various climates and different dry pavements. The sweeper industry in China develops for decades, products are developed from a single pure sweeping type to various types, the product performance and the product quality are rapidly improved, and particularly after the sweeper is reformed and opened, the product performance and the reliability of the sweeper are greatly improved through importing key outsourcing parts. However, the level of the road sweeper in China is still a certain gap compared with that in foreign developed countries, particularly in the aspect of product reliability. In order to improve the level of the sweeper truck in China as soon as possible, reduce the difference with the level of the sweeper truck in advanced China and meet the requirements of environmental sanitation departments in China on road surface cleaning operation, a proper sweeper truck research direction is selected by sweeper truck production enterprises. With the development and progress of society, the dust collection vehicle can not be satisfied in a simple sense any more, more requirements are provided from the aspects of multifunction, environmental protection, economy and the like, and the market calls the dust collection vehicle capable of satisfying various requirements. The existing emerging vehicle models can complete the work of ground cleaning and the like at one time, are suitable for cleaning operation in various climates and different dry pavements, and are more suitable for cleaning and dedusting places such as squares, highways, residential quarters, parking lots, docks, airports, stations, cement plants, power plants and the like.

Current road garbage sweeper can raise a large amount of dusts when cleaning, still can be equipped with the gravity settling chamber usually to be convenient for extract and handle the dust that the road surface raised, but current gravity settling chamber is simple water spray usually and subsides, and the gas outlet is easily plugged up along with the air current to the dust, influences the ventilation effect, can influence going on of dust removal work promptly, the permanent work of being not convenient for.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a gravity settling chamber of a garbage sweeper, which solves the problems that the existing gravity settling chamber is usually only used for simple water spraying and settling, dust is easy to block an air outlet along with air flow, the ventilation effect is influenced, the dust removal work is influenced, and the dust removal work is inconvenient to work for a long time.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a gravity settling chamber of rubbish motor sweeper, includes the setting bin, the bottom fixedly connected with motor case of setting bin, the inside fixedly connected with motor of motor case, the top of motor output shaft runs through the setting bin and extends to the inside of setting bin, the surface of motor output shaft just is located the inside fixedly connected with flabellum of setting bin, the top fixedly connected with toper filter hopper of motor output shaft, the bottom of setting bin inner chamber just is located the toper filter hopper under fixedly connected with wind-break ring, the outside cover of motor case is equipped with the collection ash bucket, the bottom fixedly connected with screw thread post of motor case, the surface threaded connection of screw thread post has the mounting plate, and the bottom fixedly connected with handle of mounting plate.

The utility model discloses a dust collection box, including subside roof portion, the left side fixedly connected with fan case at subside roof portion, the inside of fan case from left to right fixedly connected with air-blower and filter box in proper order, the air intake of air-blower passes through the left side intercommunication of connecting pipe and filter box, the air intake intercommunication of air-blower has a tuber pipe, the one end that goes out the tuber pipe and keep away from the air-blower runs through the fan case and extends to the outside of fan case, the left top of subside roof portion runs through out the dirt pipe, the left end intercommunication that goes out the dirt pipe has the pipeline adapter sleeve, and the left end of pipeline adapter sleeve and the one end intercommunication that goes out the tuber pipe, the bottom intercommunication on pipeline adapter sleeve surface has the dust absorption pipe, and the bottom intercommunication of dust absorption pipe has the sucking disc, the right.

Preferably, a partition plate is fixedly connected above the inner wall of the settling tank, and a settling cylinder is communicated with the right side of the bottom of the partition plate.

Preferably, the interior of the settling cylinder is provided with a water storage cavity, and the inner surface of the settling cylinder is provided with a water spraying hole.

Preferably, the water inlet of water pump passes through the top intercommunication of inlet tube and water pump box, the top of water pump box just is located the inlet tube and communicates directly over there is the pipe joint, the delivery port intercommunication of water pump has the outlet pipe, the one end of outlet pipe runs through the water pump box in proper order, subsides case and baffle and extends to the below of baffle, and the one end of outlet pipe and the surface intercommunication of outlet pipe.

Preferably, arc filter plate and cowl are from left to right in proper order to the joint between the top of baffle and the top of settling tank inner wall, the bottom of baffle just is located the right side fixedly connected with riser of a section of thick bamboo that subsides.

Preferably, the right side of arc filter plate intercommunication has first pipe, the right side intercommunication of cowl has the second pipe, the one end of second pipe runs through the baffle and extends to the right side of riser.

Preferably, the inside joint of filter cartridge has the filter screen, and the filter screen is provided with two, the right side of filter cartridge passes through the intake pipe and communicates with the right wall of fan case.

Preferably, the bottom of the settling tank and the inside of the ash collecting hopper are communicated with a blanking hopper, and vent holes are formed in the bottom of the settling tank and the inside of the fastening plate.

(III) advantageous effects

The invention provides a gravity settling chamber of a garbage sweeper. The method has the following beneficial effects:

(1) the gravity settling chamber of the garbage sweeper comprises a settling tank penetrating through the top end of a motor output shaft and extending into the settling tank, fan blades fixedly connected to the surface of the motor output shaft and located inside the settling tank, a conical filter hopper fixedly connected to the top end of the motor output shaft, a dust collecting hopper sleeved outside the motor tank, a threaded column fixedly connected to the bottom of the motor tank, a fastening plate in threaded connection with the outer surface of the threaded column, and a handle fixedly connected to the bottom of the fastening plate, wherein the motor can drive the fan blades and the conical filter hopper to rotate simultaneously, the fan blades can blow dust downwards, the conical filter hopper can filter air, and after rotating at a high speed, moist dust attached to the surface can be thrown to the outside, so that the surface is kept relatively clean, long-term filtering can be carried out, the dust can be collected more conveniently by matching with the dust collecting hopper, and the matching of the threaded column and the fastening plate is utilized, the ash collecting hopper can be conveniently fixed, so that the ash collecting hopper is convenient to disassemble and use.

(2) This garbage sweeper's gravity settling chamber, there is the play tuber pipe through the air intake intercommunication at the air-blower, it has a dirt pipe to run through at the left top of setting tank, the left end intercommunication that goes out the dirt pipe has the pipeline adapter sleeve, and the left end of pipeline adapter sleeve and the one end intercommunication that goes out the tuber pipe, the bottom intercommunication on pipeline adapter sleeve surface has the dust absorption pipe, and the bottom intercommunication of dust absorption pipe has the sucking disc, the dust absorption pipe is certain contained angle with pipeline adapter sleeve intercommunication department, and then can avoid the air that the air-blower blew off to get into in the dust absorption pipe, usable air current makes the sucking disc absorb the dust on the contrary, the work of cooperation flabellum, the dust absorption effect is improved, and make the air-.

(3) This garbage sweeper's gravity settling chamber, through the top fixedly connected with baffle at the setting tank inner wall, the right side intercommunication of baffle bottom has a section of thick bamboo that subsides, and the water storage chamber has been seted up to the inside of a section of thick bamboo that subsides, and the hole for water spraying has been seted up to the internal surface of a section of thick bamboo that subsides, sets up and subsides a section of thick bamboo, can pour into the water purification into to it, and the special construction through the hole for water spraying makes spun water be vaporific, can be infected with the dust, improves its effect that subsides, and.

(4) This garbage sweeper's gravity settling chamber, there are arc filter plate and cowl through from left to right joint in proper order between the top at the baffle and the top of settling tank inner wall, the bottom of baffle and the right side fixedly connected with riser that is located a section of thick bamboo that subsides, the right side intercommunication of arc filter plate has first pipe, cowl's right side intercommunication has the second pipe, the one end of second pipe runs through the baffle and extends to the right side of riser, can carry out the prefilter to the dust of taking out through setting up the arc filter plate, and the slope setting of arc filter plate, can make the dust concentrate gradually in the centre and discharge through first pipe and second pipe, can alleviate toper filter hopper secondary filter's burden, it is better to make the filter effect, and can practice thrift and subside the water, and arc filter plate and cowl are the joint setting, make it regularly take off and wash, high durability and convenient use.

(5) This garbage sweeper's gravity settling chamber has the filter screen through the inside joint at the filter cartridge, and the filter screen is provided with two, through setting up the filter cartridge, can filter the air that the external world was taken out into, avoids increasing other filter parts's work burden, and sets up two filter screens, has improved the filter effect to take out easily and wash the change.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a side view of the settling tank structure of the present invention;

FIG. 3 is a top view of the arcuate filter plate and the arcuate baffle structure of the present invention;

FIG. 4 is a schematic view of the internal structure of the fan box of the present invention;

FIG. 5 is a cross-sectional view of a settling leg configuration of the present invention;

FIG. 6 is a schematic view of the internal structure of the water pump box of the present invention;

fig. 7 is a schematic structural view of the fastening plate of the present invention.

In the figure, 1-a settling tank, 2-a motor box, 3-a motor, 4-fan blades, 5-a conical filter hopper, 6-an ash collecting hopper, 7-a threaded column, 8-a fastening plate, 9-a fan box, 10-a blower, 11-a filter box, 12-a connecting pipe, 13-an air outlet pipe, 14-a dust outlet pipe, 15-a pipeline connecting sleeve, 16-a dust suction pipe, 17-a sucking disc, 18-a water pump box, 19-a water pump, 20-a clapboard, 21-a settling cylinder, 22-a water storage cavity, 23-a water spray hole, 24-a water inlet pipe, 25-a pipeline joint, 26-a water outlet pipe, 27-an arc-shaped filter plate, 28-an arc-shaped baffle, 29-a vertical plate, 30-a first conduit, 31-a second conduit, 32-a filter screen, 32, 33-air inlet pipe, 34-blanking hopper and 35-vent hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an embodiment of the present invention provides a technical solution: a gravity settling chamber of a garbage sweeper comprises a settling tank 1, a filter box 11, a fan box 9 and a water pump box 18, wherein the surfaces of the settling tank 1, the filter box 11, the fan box 9 and the water pump box 18 are provided with box doors with better sealing performance, parts or electric appliances are convenient to take out, a partition plate 20 is fixedly connected above the inner wall of the settling tank 1, an arc-shaped filter plate 27 and an arc-shaped baffle plate 28 are sequentially clamped between the top of the partition plate 20 and the top of the inner wall of the settling tank 1 from left to right, the arc-shaped baffle plate 28 is used for blocking air flow, the right side of the arc-shaped filter plate 27 is communicated with a first guide pipe 30, the first guide pipe 30 can directly guide dust concentrated by the previous arc-shaped filter plate 27 to the next arc-shaped filter plate 27 and prevent the dust from penetrating through one layer of arc-shaped filter plate 27 to the surface of the next arc-shaped filter plate 27 again, the, the dust can be prevented from being accumulated above the partition plate 20, one end of the second conduit 31 penetrates through the partition plate 20 and extends to the right side of the vertical plate 29, the drawn dust can be primarily filtered by arranging the arc-shaped filter plate 27, the dust can be gradually concentrated to the middle and discharged through the first conduit 30 and the second conduit 31, the burden of secondary filtration of the conical filter hopper 5 can be reduced, the filtering effect is better, the sedimentation water can be saved, the arc-shaped filter plate 27 and the arc-shaped baffle plate 28 are clamped and arranged, so that the arc-shaped filter plate and the arc-shaped baffle plate can be taken down and cleaned regularly, the use is convenient, the bottom of the partition plate 20 is fixedly connected with the vertical plate 29 positioned at the right side of the sedimentation cylinder 21, the vertical plate 29 can divide the interior of the sedimentation tank 1 into two spaces, the right side at the bottom of the partition plate 20 is communicated with the sedimentation cylinder 21, the water storage cavity 22 is arranged inside the sedimentation, the sedimentation cylinder 21 is arranged, purified water can be injected into the sedimentation cylinder, the diameters of two sides of the sedimentation cylinder are large, the middle diameter of the sedimentation cylinder is small, the sprayed water is enabled to be vaporific through a special structure with a water spray hole 23 and a small middle diameter, the water can be stained with dust, the sedimentation effect is improved, and the centrifugal work of the conical filter 5 is convenient, the bottom of the sedimentation box 1 and the inner part of the ash collecting hopper 6 are communicated with a blanking hopper 34, the bottom of the sedimentation box 1 and the inner part of the fastening plate 8 are both provided with vent holes 35, the vent holes 35 at the bottom of the sedimentation box 1 are positioned between the ash collecting hopper 6 and the motor box 2, the vent holes 35 are used for discharging air in the sedimentation box 1, the bottom of the sedimentation box 1 is fixedly connected with the motor box 2, the motor 3 is fixedly connected with the inner part of the motor box 2, the top end of the output shaft of the motor 3 penetrates through, the top end of the output shaft of the motor 3 is fixedly connected with a conical filter hopper 5, the bottom of the inner cavity of the settling tank 1 is fixedly connected with a wind shield ring under the conical filter hopper 5, the wind shield ring can avoid the influence of wind power on hands, stains thrown from the edge of the conical filter hopper 5 are sucked under the conical filter hopper 5 and are discharged to the outside from an air vent 35, an ash collecting hopper 6 is sleeved outside the motor box 2, the bottom of the ash collecting hopper 6 is conical, the dust can be concentrated towards the middle, the influence of the dust falling caused by the excessive dust accumulated on the outer side is avoided, the bottom of the motor box 2 is fixedly connected with a threaded column 7, the outer surface of the threaded column 7 is in threaded connection with a fastening plate 8, the bottom of the fastening plate 8 is fixedly connected with a handle, the motor 3 can drive the fan blades 4 and the conical filter hopper 5 to rotate simultaneously, the fan blades 4 can blow the dust downwards, the conical filter hopper 5 can filter air and rotate at a high speed, can get rid of the adnexed moist dust in surface to the outside, keep surperficial clean relatively, can carry out permanent filtration, cooperation dust collecting bucket 6 can be more convenient carry out the dust and collect, and utilize the cooperation of screw post 7 with mounting plate 8, fixed dust collecting bucket 6 that can be convenient makes its convenient to detach, convenient to use.

The left side of the top of the settling tank 1 is fixedly connected with a fan box 9, the fan box 9 can protect an air blower 10 and a filter box 11 from being damaged, the air blower 10 and the filter box 11 are fixedly connected inside the fan box 9 from left to right, the filter box 11 is clamped with two filter screens 32, the filter screens 32 are arranged, air pumped from the outside can be filtered by arranging the filter box 11, the workload of other filter components is avoided to be increased, the two filter screens 32 are arranged, the filtering effect is improved, the filter boxes are easy to take out for cleaning and replacement, the right side of the filter box 11 is communicated with the right wall of the fan box 9 through an air inlet pipe 33, an air inlet of the air blower 10 is communicated with the left side of the filter box 11 through a connecting pipe 12, an air outlet pipe 13 is communicated with the air inlet of the air blower 10, one end, away from the air outlet pipe 13, of, a dust outlet pipe 14 penetrates through the top of the left side of the settling tank 1, the left end of the dust outlet pipe 14 is communicated with a pipeline connecting sleeve 15, the left end of the pipeline connecting sleeve 15 is communicated with one end of an air outlet pipe 13, the bottom of the surface of the pipeline connecting sleeve 15 is communicated with a dust suction pipe 16, the bottom end of the dust suction pipe 16 is communicated with a sucker 17, the connecting part of the dust suction pipe 16 and the pipeline connecting sleeve 15 forms a certain included angle, so that wind blown out by the air blower 10 can be prevented from entering the dust suction pipe 16, the sucker 17 can suck dust by utilizing air flow, the dust suction effect is improved by matching with the work of the fan blades 4, the air blower 10 does not need to adopt high power and energy-saving, a water pump tank 18 is fixedly connected to the right side of the top of the settling tank 1, a water pump 19 is fixedly connected to the inside of the water pump tank 18, the water pump 19 can protect the water, the top of the water pump box 18 is communicated with a pipeline joint 25 above the water inlet pipe 24, the water outlet of the water pump 19 is communicated with a water outlet pipe 26, one end of the water outlet pipe 26 sequentially penetrates through the water pump box 18, the settling tank 1 and the partition plate 20 and extends to the lower part of the partition plate 20, and one end of the water outlet pipe 26 is communicated with the surface of the water outlet pipe 26.

When the dust collector is used, an external water pipe is communicated with the pipeline connector 25, then the motor 3, the blower 10 and the water pump 19 are started, the motor 3 simultaneously drives the fan blades 4 and the conical filter hopper 5 to rotate, the fan blades 4 rotate to form downward air flow, so that the air pressure in the settling tank 1 is reduced, air is further sucked from the outside, meanwhile, the blower 10 sucks air through the connecting pipe 12, the outside air is filtered by the filter screen 32 and then is discharged through the air outlet pipe 13, rightward air flow is formed in the pipeline connecting sleeve 15, the dust suction pipe 16 sucks the outside air through the suction disc 17, further, dust is sucked and enters the settling tank 1 along with the air flow, the fan blades 4 discharge air to the outside, the blower 10 discharges air into the settling tank 1, so that the air flow direction in the settling tank 1 is stable, the dust is firstly filtered by the plurality of layers of arc-shaped filter plates 27, the dust on the surfaces of the arc-shaped filter plates 27 gradually slides towards the middle, and then sequentially passes, the air current is blockked by cowl 28, pass baffle 20 and a section of thick bamboo 21 that subsides, water pump 19 extracts the water purification from the external world simultaneously, pour into water storage chamber 22 through outlet pipe 26 in, through hole for water spraying 23 blowout water smoke, make the dust subside, moist dust falls to high-speed pivoted toper filter 5 and filters once more, and gradually be thrown away and fall to the outside, it slides in the middle of falling the refrigerator in dust collection fill 6 through blanking fill 34, collect full dust in the dust collection fill 6 after, but closing device, rotate the handle, take off mounting plate 8, then take off dust collection fill 6 and handle the dust, regularly clear up the setting tank 1 is inside, and take out filter screen 32 and clear up the change.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. The utility model provides a gravity settling chamber of rubbish motor sweeper, includes settling tank (1), its characterized in that: the bottom of the settling tank (1) is fixedly connected with a motor box (2), the interior of the motor box (2) is fixedly connected with a motor (3), the top end of the output shaft of the motor (3) penetrates through the settling tank (1) and extends into the settling tank (1), the surface of the output shaft of the motor (3) and the inner part of the sedimentation tank (1) are fixedly connected with fan blades (4), the top end of the output shaft of the motor (3) is fixedly connected with a conical filter hopper (5), the bottom of the inner cavity of the settling tank (1) is fixedly connected with a wind-shield ring under the conical filter hopper (5), a dust collecting hopper (6) is sleeved outside the motor box (2), a threaded column (7) is fixedly connected to the bottom of the motor box (2), the outer surface of the threaded column (7) is in threaded connection with a fastening plate (8), and the bottom of the fastening plate (8) is fixedly connected with a handle;

the left side of the top of the settling box (1) is fixedly connected with a fan box (9), the inside of the fan box (9) is sequentially and fixedly connected with an air blower (10) and a filter box (11) from left to right, an air inlet of the air blower (10) is communicated with the left side of the filter box (11) through a connecting pipe (12), the air inlet of the air blower (10) is communicated with an air outlet pipe (13), one end, far away from the air blower (10), of the air outlet pipe (13) penetrates through the fan box (9) and extends to the outside of the fan box (9), a dust outlet pipe (14) penetrates through the top of the left side of the settling box (1), the left end of the dust outlet pipe (14) is communicated with a pipeline connecting sleeve (15), the left end of the pipeline connecting sleeve (15) is communicated with one end of the air outlet pipe (13), the bottom of the surface of the pipeline connecting sleeve (15) is communicated with a dust suction pipe (16), and the, the right side of the top of the settling tank (1) is fixedly connected with a water pump tank (18), and the inside of the water pump tank (18) is fixedly connected with a water pump (19);

a partition plate (20) is fixedly connected above the inner wall of the settling tank (1), and a settling cylinder (21) is communicated with the right side of the bottom of the partition plate (20); a water storage cavity (22) is formed in the settling cylinder (21), and water spray holes (23) are formed in the inner surface of the settling cylinder (21);

an arc-shaped filter plate (27) and an arc-shaped baffle plate (28) are sequentially clamped between the top of the partition plate (20) and the top of the inner wall of the settling tank (1) from left to right, and a vertical plate (29) is fixedly connected to the bottom of the partition plate (20) and positioned on the right side of the settling cylinder (21);

a first conduit (30) is communicated with the right side of the arc-shaped filter plate (27), a second conduit (31) is communicated with the right side of the arc-shaped baffle plate (28), and one end of the second conduit (31) penetrates through the partition plate (20) and extends to the right side of the vertical plate (29);

the water inlet of water pump (19) passes through the top intercommunication of inlet tube (24) and water pump box (18), the top of water pump box (18) just is located inlet tube (24) and communicates directly over there is pipe joint (25), the delivery port intercommunication of water pump (19) has outlet pipe (26), the one end of outlet pipe (26) runs through water pump box (18), settling tank (1) and baffle (20) in proper order and extends to the below of baffle (20), and the surface intercommunication of the one end of outlet pipe (26) and outlet pipe (26).

2. The gravity settling chamber of a garbage sweeper of claim 1, wherein: the filter box is characterized in that two filter screens (32) are clamped in the filter box (11), and the right side of the filter box (11) is communicated with the right wall of the fan box (9) through an air inlet pipe (33).

3. The gravity settling chamber of a garbage sweeper of claim 1, wherein: the bottom of the settling box (1) and the inner part of the ash collecting hopper (6) are communicated with a blanking hopper (34), and vent holes (35) are formed in the bottom of the settling box (1) and the inner part of the fastening plate (8).