A putty powder brushing device

Abstract

The present application relates to the field of building decoration, especially to a putty powder brushing equipment. The present application provides a putty powder brushing equipment which is convenient to adjust the amount of putty powder for suitable amount of putty powder, and can brush the putty powder more fully and uniformly, comprising a protective cover, a handle, an L-shaped plate, a guide support wheel and the like. Two handles are installed on the upper part of one side of the protective cover, and the two handles are symmetrically arranged. The L-shaped plate is fixedly connected to the protective cover. The L-shaped plate is provided with a plurality of strip-shaped grooves. Two groups of guide support wheels are rotatably connected to the L-shaped plate. The reciprocating movement of the support plate drives the slotted swing rod to reciprocate, and then the reciprocating movement of the movable slotted plate frame makes the movable rod and the slotted baffle reciprocate. The putty powder in the arc-shaped cover is intermittently sprayed through the strip-shaped grooves on the L-shaped plate and then sprayed on the corner of the wall, so that the putty powder is better adhered to the corner of the wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building decoration, and in particular to a putty powder brushing device. BACKGROUND

[0002] Putty powder is mainly composed of talcum powder and glue, and is a base material for wall repair and leveling, which lays a good foundation for the next decoration. Putty is divided into two types: interior wall and exterior wall. Exterior wall putty is resistant to wind and sunlight, so it has high adhesion, high strength and large thickness. In order to pursue health and environmental protection, the amount of interior wall putty is generally not excessive, and the thickness of interior wall putty is generally thin.

[0003] The wall corner of the interior wall, due to its unique structure, workers often need to spend more time to make the putty on both sides present the same flatness. At the same time, the space of the wall corner is small, which further increases the difficulty of the workers' construction. The workers have difficulty in controlling the amount of putty powder when applying putty powder to the wall corner, which can easily lead to excessive or insufficient amount. In addition, it is not convenient to adjust the amount of putty powder according to the situation, and it is difficult to fully and evenly brush the putty at the wall corner. SUMMARY

[0004] In order to solve the problem that it is not convenient to adjust the amount of putty powder according to the situation when workers apply putty powder, and it is difficult to fully and evenly brush the putty at the wall corner, the present application provides a putty powder brushing device which can conveniently adjust the amount of putty powder for appropriate application, and can fully and evenly brush the putty.

[0005] Technical solution: a putty powder brushing device, comprising a protective cover, a handle, an L-shaped plate, a guide support wheel, a limiting plate, a feeding component and a scraping component, two handles are installed on the upper part of one side of the protective cover, the two handles are symmetrically arranged, the L-shaped plate is fixedly connected to the protective cover, the L-shaped plate is provided with a plurality of strip-shaped grooves, two groups of guide support wheels are rotatably connected to the L-shaped plate, the number of guide support wheels in each group is several, the guide support wheels are in contact with the wall, two limiting plates are fixedly connected to one side of the L-shaped plate, the two limiting plates are in contact with the wall, the L-shaped plate is provided with a feeding component, and the top of the feeding component is provided with a scraping component.

[0006] Further, the feeding component comprises an arc-shaped cover and a feeding pipe, the arc-shaped cover is installed on the L-shaped plate, the feeding pipe is installed on the arc-shaped cover, the feeding pipe is in communication with the arc-shaped cover, and the feeding pipe penetrates through the protective cover.

[0007] Further, the scraping component comprises an electric push rod, a support plate, a scraping plate and an adjusting screw rod, the electric push rod is installed on the top of the arc-shaped cover, the support plate is installed on the top of the telescopic shaft of the electric push rod, the scraping plate is slidably installed on the support plate, and the adjusting screw rod is threadedly connected to the support plate and rotatably connected to the scraping plate.

[0008] Further, the discharging control component is arranged on the top of the arc-shaped cover, and comprises two movable rods, two slotted baffles, two guide rods, a movable slotted plate frame, a support spring, a vertical rod, a fixed frame, a slotted swing rod and a driving frame, the two movable rods are slidably connected to the arc-shaped cover and respectively in contact with the L-shaped plates, the slotted baffles are installed on the movable rods and in contact with each other, the guide rods are fixedly connected to the top of the arc-shaped cover, the movable slotted plate frame is slidably connected to the two guide rods, the support spring is connected between the movable slotted plate frame and the arc-shaped cover, the guide rods pass through the support spring, the vertical rod is installed on the top of the movable slotted plate frame, the fixed frame is installed on the top of the arc-shaped cover, the slotted swing rod is rotatably connected to the upper portion of the fixed frame and slidably connected to the vertical rod, and the driving frame is slidably connected to the support plate and slidably matched with the slotted swing rod.

[0009] Further, the adjusting component is arranged on the support plate and comprises a rotating gear, a pushing gear rack, a pulling gear rack and a rotating sleeve, the rotating gear is rotatably connected to the top of the support plate, the pushing gear rack is fixedly connected to one side of the driving frame and engaged with the rotating gear, the rotating sleeve is rotatably connected to the adjusting screw rod, the pulling gear rack is fixedly connected to the rotating sleeve and engaged with the rotating gear, and the pulling gear rack and the pushing gear rack are in contact with the support plate.

[0010] Further, the adjusting component is arranged on the support plate and comprises a rotating gear, a pushing gear rack, a pulling gear rack and a rotating sleeve, the rotating gear is rotatably connected to the top of the support plate, the pushing gear rack is fixedly connected to one side of the driving frame and engaged with the rotating gear, the rotating sleeve is rotatably connected to the adjusting screw rod, the pulling gear rack is fixedly connected to the rotating sleeve and engaged with the rotating gear, and the pulling gear rack and the pushing gear rack are in contact with the support plate.

[0011] Furthermore, it also includes a connecting rod, a collection hopper, and a scraper. The connecting rod is fixedly installed on one side of the support plate, the collection hopper is fixedly connected to the bottom end of the connecting rod, and the scraper is installed on the collection hopper and contacts the wall.

[0012] The present invention has the following advantages: First, the reciprocating motion of the support plate drives the grooving swing rod to swing back and forth, thereby moving the grooving plate frame up and down, causing the moving rod and the grooving baffle to move back and forth. The putty powder in the arc-shaped cover is intermittently sprayed out through the strip groove on the L-shaped plate, thereby intermittently spraying putty powder on the corner of the wall, so that the corner of the wall can better adhere to the putty powder.

[0013] 2. Adjusting the screw moves the rotating sleeve, which in turn moves the rack, causing the rack and drive frame to move away from the wall. The closer the scraper is to the wall, the farther the drive frame is from the wall, the shorter the distance the grooving baffle moves, and the less putty powder can be sprayed from the groove on the L-shaped plate. This allows you to adjust the amount of putty powder sprayed as needed to avoid over-spraying or under-spraying.

[0014] 3. The rotating sleeve drives the push rod to move, causing the inclined panel to move together. The inclined panel pushes the moving rod and the pressing plate to move closer to the wall. The pressing plate flattens the strip of putty powder, making the putty powder evenly distributed on the wall, which makes it easier for the scraping plate to scrape the putty powder more evenly. The closer the scraping plate is to the wall, the closer the inclined panel is to the wall, and the closer the pressing plate is to the wall, so that the putty powder at the corner of the wall can be pressed thinner, thus making the putty powder more fully scraped.

[0015] Fourth, the up-and-down reciprocating motion of the scraper scrapes off the concrete protrusions on the wall surface, making it easier for the trowel to apply the putty powder more evenly to the wall. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the third three-dimensional structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the first partial three-dimensional structure of the present invention.

[0020] Figure 5 For the present invention Figure 4 A magnified three-dimensional structural diagram of A in the middle.

[0021] Figure 6 This is a schematic diagram of the second partial three-dimensional structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the third part of the three-dimensional structure of the present invention.

[0023] Figure 8 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0024] Figure 9 This is a schematic diagram of the fourth partial three-dimensional structure of the present invention.

[0025] Figure 10 This is a schematic diagram of the fifth partial three-dimensional structure of the present invention.

[0026] Figure 11 For the present invention Figure 10 A magnified three-dimensional structural diagram of B.

[0027] Figure 12 This is a schematic diagram of the sixth partial three-dimensional structure of the present invention.

[0028] Figure 13 For the present invention Figure 12 A magnified three-dimensional structural diagram of C.

[0029] Figure 14 This is a schematic diagram of the seventh partial three-dimensional structure of the present invention.

[0030] The meanings of the labels in the attached diagram are as follows: 1: Wall; 21: Protective cover; 22: Handle; 23: L-shaped plate; 24: Guide support wheel; 25: Limiting plate; 31: Arc-shaped cover; 32: Feed pipe; 41: Electric push rod; 42: Support plate; 43: Scraper plate; 44: Adjusting screw; 51: Movable rod; 52: Grooving baffle; 53: Guide rod; 54: Movable grooved plate frame; 55: Support spring; 56: Vertical rod; 57: ... 58: Fixed frame; 59: Slotted swing arm; 60: Drive frame; 61: Rotating gear; 62: Push rack; 63: Pull rack; 64: Rotating sleeve; 71: Fixed guide rod; 72: Moving rod; 73: Return spring; 74: Press plate; 75: Guide bar; 76: Sliding plate; 77: Square rod; 78: Slanted panel; 79: Push plate; 710: Push rod; 81: Connecting rod; 82: Collection hopper; 83: Scraper. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] A type of putty powder coating equipment, such as Figures 1-10 As shown, the device includes a protective cover 21, handles 22, an L-shaped plate 23, guide support wheels 24, limiting plates 25, a feeding component, and a leveling component. Two handles 22 are bolted to the upper part of one side of the protective cover 21 and are symmetrically arranged. The L-shaped plate 23 is welded to the protective cover 21 and has several slots. Two sets of guide support wheels 24 are rotatably connected to the L-shaped plate 23 via bearings. Each set of guide support wheels 24 consists of two wheels and contacts the wall 1. Two limiting plates 25 are fixed to the side of the L-shaped plate 23 near the wall 1 and contact the wall 1. The L-shaped plate 23 is provided with a feeding component, and the top of the feeding component is provided with a leveling component for leveling the putty powder on the wall 1.

[0034] The feeding component includes an arc-shaped cover 31 and a feed pipe 32. The arc-shaped cover 31 is welded to the L-shaped plate 23, and the feed pipe 32 is welded to the arc-shaped cover 31. The feed pipe 32 is connected to the arc-shaped cover 31 and passes through the protective cover 21. The feed pipe 32 is used to transport putty powder.

[0035] The leveling component includes an electric push rod 41, a support plate 42, a scraper plate 43, and an adjusting screw 44. The electric push rod 41 is bolted to the top of the arc-shaped cover 31. The support plate 42 is bolted to the top of the telescopic shaft of the electric push rod 41. The scraper plate 43 is slidably mounted on the support plate 42. The adjusting screw 44 is threaded to the support plate 42 and is rotatably connected to the scraper plate 43. The scraper plate 43 is used to level the putty powder on the wall 1.

[0036] The worker stands at a high position of the wall corner through the scaffold, first holds one of the handles 22, makes the guide support wheel 24 adhere to the wall 1, then rotates the adjusting screw 44, the adjusting screw 44 drives the scraping plate 43 to move towards the wall 1, the scraping plate 43 is closer to the wall 1, the thickness of the putty powder coating is thinner, after the position of the scraping plate 43 is adjusted, the worker stops rotating the adjusting screw 44, then holds two handles 22, another worker sends the prepared putty powder into the feeding pipe 32 through the pipeline by the putty powder conveying pump, then the putty powder in the feeding pipe 32 enters the space formed by the arc-shaped cover 31 and the L-shaped plate 23, the putty powder is sprayed on the wall 1 through the strip-shaped slot on the L-shaped plate 23, the worker starts the electric push rod 41, the telescopic shaft of the electric push rod 41 drives the support plate 42 and the scraping plate 43 to reciprocate up and down, the scraping plate 43 reciprocates up and down to scrape the putty powder on the wall 1, the worker drives the protective cover 21 to move from top to bottom through the two handles 22, so that the L-shaped plate 23 sprays the putty powder on the wall 1 from top to bottom, then the scraping plate 43 scrapes the putty powder from top to bottom, which is convenient for quickly brushing the putty powder on the wall corner.

[0037] After the putty powder brushing work on the wall corner is completed, the worker closes the electric push rod 41, and the putty powder conveying pump stops pumping the putty powder into the feeding pipe 32.

[0038] Example 2

[0039] On the basis of example 1, as shown in Figure 5 , Figure 9 and Figure 12 , further comprising a discharge control component, the arc-shaped cover 31 is provided with a discharge control component, the discharge control component comprises a movable rod 51, a slotted baffle 52, a guide rod 53, a movable slotted plate frame 54, a supporting spring 55, a vertical rod 56, a fixed frame 57, a slotted swing rod 58 and a driving frame 59, two movable rods 51 are slidably connected to the arc-shaped cover 31, two movable rods 51 are in contact with the L-shaped plate 23, the slotted baffle 52 is installed on the movable rod 51 by bolts, two slotted baffles 52 are in contact with each other, the slotted baffle 52 is used to block the strip-shaped slot on the L-shaped plate 23, two guide rods 53 are welded on the top of the arc-shaped cover 31, the movable slotted plate frame 54 is slidably connected to the two guide rods 53, the supporting spring 55 is connected between the movable slotted plate frame 54 and the arc-shaped cover 31, the guide rod 53 passes through the supporting spring 55, the vertical rod 56 is welded on the top of the movable slotted plate frame 54, the vertical rod 56 is above the movable slotted plate frame 54, the fixed frame 57 is welded on the top of the arc-shaped cover 31, the slotted swing rod 58 is rotatably connected to the upper part of the fixed frame 57 by a pin shaft, the slotted swing rod 58 is slidably connected with the vertical rod 56, the driving frame 59 is slidably connected to the support plate 42, and the driving frame 59 is slidably matched with the slotted swing rod 58.

[0040] The slotted baffle 52 blocks the strip-shaped slot on the L-shaped plate 23. The reciprocating movement of the supporting plate 42 drives the slotted swing rod 58 to swing reciprocatingly. The slotted swing rod 58 drives the vertical rod 56 and the movable slotted plate frame 54 to move reciprocatingly. The reciprocating movement of the movable slotted plate frame 54 drives the movable rod 51 and the slotted baffle 52 to move reciprocatingly. The putty powder in the arc-shaped cover 31 is intermittently sprayed through the strip-shaped slot on the L-shaped plate 23, and then is intermittently sprayed on the wall corner, so that the putty powder is better adhered to the wall corner.

[0041] Embodiment 3

[0042] On the basis of the embodiment 2, as shown in Figure 11 and Figure 13 , the adjusting component is further included. The adjusting component is arranged on the supporting plate 42 and includes a rotating gear 61, a pushing gear rack 62, a pulling gear rack 63 and a rotating sleeve 64. The rotating gear 61 is rotatably connected to the top of the supporting plate 42 through a bearing. The pushing gear rack 62 is welded on the driving frame 59 near the wall body 1. The pushing gear rack 62 is engaged with the rotating gear 61. The rotating sleeve 64 is rotatably connected to the adjusting screw 44. The pulling gear rack 63 is welded on the rotating sleeve 64. The pulling gear rack 63 is engaged with the rotating gear 61. The pulling gear rack 63 and the pushing gear rack 62 are in contact with the supporting plate 42.

[0043] When the adjusting screw 44 moves towards the wall body 1, the rotating sleeve 64 moves together. The rotating sleeve 64 drives the pulling gear rack 63 to move. The pulling gear rack 63 drives the rotating gear 61 to rotate. The rotating gear 61 drives the pushing gear rack 62 and the driving frame 59 to move away from the wall body 1. The closer the scraping plate 43 is to the wall body 1, the farther the driving frame 59 is from the wall body 1. The driving frame 59 drives the slotted swing rod 58 to swing at a smaller angle. The vertical rod 56 and the movable slotted plate frame 54 move downward at a shorter distance. The slotted baffle 52 moves at a shorter distance. The strip-shaped slot on the L-shaped plate 23 can spray a smaller amount of putty powder. In this way, the amount of sprayed putty powder can be adjusted according to the situation to avoid excessive or insufficient spraying of putty powder.

[0044] Embodiment 4

[0045] On the basis of the embodiment 3, as shown in Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, the device further comprises a fixed guide rod 71, a moving rod 72, a return spring 73, a flattening plate 74, a guide strip 75, a sliding plate 76, a square rod 77, an inclined plate 78, a pushing plate 79, and a pushing rod 710. The fixed guide rod 71 is bolted to the top of the arc-shaped cover 31. The moving rod 72 is slidingly connected to the fixed guide rod 71. The return spring 73 is connected between the moving rod 72 and the fixed guide rod 71. The flattening plate 74 is mounted on the moving rod 72 near the wall body 1. The flattening plate 74 is used to flatten the strip-shaped putty powder. The guide strip 75 is welded to the top of the arc-shaped cover 31. The sliding plate 76 is slidingly connected to the guide strip 75. The sliding plate 76 is located on the upper part of the guide strip 75. The square rod 77 is welded to the sliding plate 76. The inclined plate 78 is slidingly connected to the square rod 77. The inclined plate 78 is in contact with the sliding plate 76. The pushing plate 79 is bolted to one side of the support plate 42. The pushing plate 79 is in contact with the bottom of the inclined plate 78. One end of the pushing plate 79 is located below the inclined plate 78. The pushing rod 710 is welded to the rotating sleeve 64. The pushing rod 710 is slidingly connected to the sliding plate 76.

[0046] The flattening plate 43 is always located above the flattening plate 74. The rotating sleeve 64 drives the pushing rod 710 to move. The pushing rod 710 drives the sliding plate 76, the square rod 77, and the inclined plate 78 to move together towards the wall body 1. The support plate 42 drives the pushing plate 79 to reciprocate up and down. The pushing plate 79 moves upwards to pull the inclined plate 78 to move together. The inclined plate 78 pushes the moving rod 72 and the flattening plate 74 to move towards the wall body 1. The return spring 73 is compressed. The pushing plate 79 moves downwards. The inclined plate 78 is reset under the action of gravity. The return spring 73 pushes the moving rod 72 and the flattening plate 74 to move away from the wall body 1 to reset. The flattening plate 74 flattens the strip-shaped putty powder, so that the putty powder is evenly distributed on the wall body 1. It is convenient for the flattening plate 43 to flatten the putty powder more evenly. The closer the flattening plate 43 is to the wall body 1, the closer the inclined plate 78 is to the wall body 1, and the closer the flattening plate 74 is to the wall body 1. The flattening plate 74 can flatten the putty powder on the corner more thinly. The flattening plate 43 can flatten the putty powder more fully.

[0047] Example 5

[0048] On the basis of example 4, as shown in Figure 2 and Figure 3 The device further comprises a connecting rod 81, a collecting hopper 82, and a scraping blade 83. The connecting rod 81 is welded to one side of the support plate 42 away from the wall body 1. The collecting hopper 82 is welded to the bottom end of the connecting rod 81. The collecting hopper 82 is used to collect the putty powder scraped off by the flattening plate 43. The scraping blade 83 is welded to the collecting hopper 82. The scraping blade 83 is in contact with the wall body 1. The scraping blade 83 is used to scrape off the concrete protrusions on the surface of the wall body 1.

[0049] The support plate 42 drives the collection hopper 82 and the scraper 83 to reciprocate up and down, and the putty powder scraped off by the screed plate 43 falls into the collection hopper 82, and the scraper 83 reciprocates up and down to scrape off the concrete protrusions on the surface of the wall body 1, so that the putty powder is more evenly scraped on the wall body 1 by the screed plate 43.

[0050] Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A putty powder painting device, characterized by, The utility model provides a wall body (1) is provided with the protective cover (21), the protective cover (21) one side upper portion is provided with two symmetrically arranged handles (22), the L-shaped plate (23) is fixedly connected on the protective cover (21), the L-shaped plate (23) is provided with a plurality of strip grooves, two groups of guiding support wheel (24) are rotatably connected on the L-shaped plate (23), the number of guiding support wheel (24) of each group is a plurality, guiding support wheel (24) is in contact with wall body (1), two limiting plates (25) are fixedly connected on one side of the L-shaped plate (23), and two limiting plates (25) are in contact with wall body (1), and the L-shaped plate (23) is equipped with the feeding component, and the feeding component top is equipped with the scraping component; The feeding component includes an arc cover (31) and a feeding pipe (32), the arc cover (31) is installed on the L-shaped plate (23), the feeding pipe (32) is installed on the arc cover (31), the feeding pipe (32) is communicated with the arc cover (31), and the feeding pipe (32) passes through the protective cover (21); The scraping component includes an electric push rod (41), a support plate (42), a scraping plate (43) and an adjusting screw (44), the electric push rod (41) is installed on the top of the arc cover (31), the support plate (42) is installed on the top of the telescopic shaft of the electric push rod (41), the scraping plate (43) is slidably installed on the support plate (42), the adjusting screw (44) is connected on the support plate (42) by screwing, and the adjusting screw (44) is rotatably connected with the scraping plate (43). The discharge control component is arranged on the top of the arc-shaped cover (31), and comprises two movable rods (51), two slotted baffles (52), two guide rods (53), a movable slotted plate frame (54), a supporting spring (55), a vertical rod (56), a fixed frame (57), a slotted swing rod (58) and a driving frame (59). The two movable rods (51) are slidably connected to the arc-shaped cover (31), and are in contact with the L-shaped plate (23) respectively. The slotted baffles (52) are mounted on the movable rods (51) and in contact with each other. The guide rods (53) are fixedly connected to the top of the arc-shaped cover (31). The movable slotted plate frame (54) is slidably connected to the two guide rods (53), and the supporting spring (55) is arranged between the movable slotted plate frame (54) and the arc-shaped cover (31). The guide rods (53) pass through the supporting spring (55). The vertical rod (56) is mounted on the top of the movable slotted plate frame (54). The fixed frame (57) is mounted on the top of the arc-shaped cover (31). The slotted swing rod (58) is rotatably connected to the upper portion of the fixed frame (57) and slidably connected to the vertical rod (56). The driving frame (59) is slidably connected to the supporting plate (42) and slidably connected to the slotted swing rod (58).

2. A putty application device according to claim 1, characterised in that The adjusting component is arranged on the supporting plate (42) and comprises a rotating gear (61), a pushing rack (62), a pulling rack (63) and a rotating sleeve (64). The rotating gear (61) is rotatably connected to the top of the supporting plate (42). The pushing rack (62) is fixedly connected to one side of the driving frame (59) and engaged with the rotating gear (61). The rotating sleeve (64) is rotatably connected to the adjusting screw (44). The pulling rack (63) is fixedly connected to the rotating sleeve (64) and engaged with the rotating gear (61). The pulling rack (63) and the pushing rack (62) are in contact with the supporting plate (42).

3. A putty application device according to claim 2, wherein The fixed guide rod (71) is installed on the top of the arc-shaped cover (31), the moving rod (72) is slidably connected to the fixed guide rod (71), the reset spring (73) is connected between the moving rod (72) and the fixed guide rod (71), the flattening plate (74) is installed on one end of the moving rod (72), the guide strip (75) is fixedly installed on the top of the arc-shaped cover (31), the sliding plate (76) is slidably connected to the guide strip (75), the square rod (77) is fixedly installed on the sliding plate (76), the inclined plate (78) is slidably connected to the square rod (77), the inclined plate (78) is in contact with the sliding plate (76), the push plate (79) is installed on one side of the support plate (42), the push plate (79) is in contact with the bottom of the inclined plate (78), the push rod (710) is fixedly connected to the rotating sleeve (64), and the push rod (710) is slidably connected with the sliding plate (76).

4. A putty application device according to claim 3, wherein The connecting rod (81) is fixedly installed on one side of the support plate (42), the collecting hopper (82) is fixedly connected to the bottom end of the connecting rod (81), and the scraper (83) is installed on the collecting hopper (82) and in contact with the wall (1).

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