Lead smelting granulation recovery device

Abstract

The application provides a lead smelting granular quenching recovery device, and relates to the field of lead smelting. The lead smelting granular quenching recovery device comprises a recovery box, a smashing mechanism and a cleaning mechanism, the inside of the recovery box is provided with a screening mechanism, the screening mechanism comprises a filter plate and a baffle, the filter plate is arranged in the recovery box, and the bottom of the baffle is connected with the top of the filter plate. The lead smelting granular quenching recovery device is provided with the screening mechanism, the electric telescopic pipe at the top of the supporting plate is telescoped to drive the filter plate at the top of the upper hinged frame to adjust the inclination angle, the granular quenching is rolled along the filter plate and the side edges of the baffle to pass through the screen, the large granular quenching passes through the upper discharge port to be discharged along the upper guide plate, the small granular quenching falls on the bottom of the recovery box to pass through the lower discharge port to be discharged along the lower guide plate, the possibility that the unfiltered granular quenching is discharged from the upper discharge port is reduced, the granular quenching screening completion degree is improved, the screening efficiency is improved, the subsequent granular quenching can be directly used again, and the working cost of the granular quenching recovery link is reduced.

Description

Technical Field

[0001] This application relates to the field of lead smelting technology, specifically to a quenching particle recovery device for lead smelting. Background Technology

[0002] Besides lead, lead ore also contains valuable elements such as copper, antimony, bismuth, gold, and silver. The recovery of these associated elements is a key focus in lead smelting. Efficient treatment of intermediate slag during the smelting process is crucial for resource recovery rates and environmental compliance. These intermediate slags include matte slag, lead-copper slag, and antimony-bismuth slag. Since these materials have already undergone high-temperature smelting in the furnace, they form large agglomerates after natural cooling upon discharge. To improve smelting efficiency and save energy, they need to be crushed into particles of a certain size before being reintroduced into the furnace to extract valuable elements.

[0003] Patent CN216704609U discloses a quenching particle recovery device for lead smelting. This device includes a servo motor, a rotating rod, a mounting plate, a scraper, a coarse filter screen, a fine filter screen, a first discharge port, a second discharge port, a first collection box, and a second collection box. The servo motor drives the rotating rod to rotate, which in turn drives the mounting plate to make the scraper sweep across the top of the coarse and fine filter screens, facilitating screening and preventing clogging. At the same time, opening the first or second discharge port allows the quenching particles to be fed into the first or second collection box for collection, thus achieving classified recovery of the quenching particles and solving the problem of inconvenient classified recovery.

[0004] However, when the aforementioned lead smelting quenching particle recovery device is in use, small particles fall into the first collection box without passing through the filter holes because they are carried by large quenching particles. The screening effect has room for improvement, the screening efficiency is low, and secondary screening is required, which increases the workload and time cost of the recovery process. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this application provides a quenching particle recovery device for lead smelting, which solves the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this application provides the following technical solution: a lead smelting quenching particle recovery device, comprising a recovery box, a crushing mechanism for crushing quenching particles, and a cleaning mechanism for removing quenching particles accumulated in the sieve holes. The recovery box is equipped with a screening mechanism for separating quenching particles of different sizes. The screening mechanism includes a filter plate and a baffle. The filter plate is disposed inside the recovery box, the bottom of the baffle is connected to the top of the filter plate, the crushing mechanism is connected to the top of the recovery box, and the cleaning mechanism is connected to the right side of the recovery box.

[0009] By adopting the above technical solution, the baffle at the top of the filter plate can be used to slow down the rolling speed of the quenched particles, making it easier for the quenched particles to roll through the sieve holes for screening, and reducing the probability of some small quenched particles being mixed with large quenched particles and discharged.

[0010] Preferably, the screening mechanism further includes a support plate and an electric telescopic tube. The left side of the support plate is connected to the left side of the inner wall of the recycling bin, the bottom of the electric telescopic tube is connected to the top of the support plate, and an upper hinge frame is hinged to the top of the electric telescopic tube. The top of the upper hinge frame is connected to the bottom left side of the filter plate.

[0011] By adopting the above technical solution, the electric telescopic tube at the top of the support plate can be used to extend and retract to move the upper hinge frame. The movement of the upper hinge frame can adjust the tilt angle of the filter plate, thereby improving the completion of quenching and screening.

[0012] Preferably, the screening mechanism further includes an upper discharge port and a lower discharge port. The upper discharge port is located on the lower right side of the recycling box. The front and rear sides of the inner wall of the upper discharge port are rotatably connected to the front and rear right sides of the filter plate. An upper guide plate is connected to the lower right side of the upper discharge port. The lower discharge port is located on the lower left side of the recycling box. A lower guide plate is connected to the lower left side of the lower discharge port.

[0013] By adopting the above technical solution, the upper discharge port and upper guide plate can facilitate the discharge of large quenching particles, and the lower discharge port and lower guide plate can facilitate the discharge of small quenching particles, reducing the possibility of quenching particles falling to the ground.

[0014] Preferably, the crushing mechanism includes a hopper and an electric push rod. The lower side of the hopper is connected to the top left side of the recycling box. A crushing cylinder is connected to the bottom of the hopper. A water passage chamber is provided inside the crushing cylinder. A discharge port is opened at the bottom of the crushing cylinder. The top of the electric push rod is connected to the top of the inner wall of the recycling box. A connecting plate is connected to the bottom of the electric push rod. A blocking plate is connected to the top right side of the connecting plate. The side of the blocking plate is in contact with the inner wall of the discharge port.

[0015] By adopting the above technical solution, the hopper can be used to facilitate the pouring of quenched particles into the crushing cylinder. The extension of the electric push rod drives the blocking plate connected to the connecting plate to move down and expose the discharge port, so that the crushed quenched particles can fall into the screening stage.

[0016] Preferably, the crushing mechanism further includes an arc-shaped plate and a crushing plate. The rear side of the arc-shaped plate is connected to the left side of the front side of the recycling bin. A first motor is connected to the top of the arc-shaped plate. The output shaft of the first motor is connected to a rotating shaft. The crushing plate is connected to the surface of the rotating shaft.

[0017] By adopting the above technical solution, the first motor output shaft at the top of the arc plate can be used to drive the rotating shaft to rotate. The rotation of the rotating shaft drives the crushing plate to rotate, which breaks up the sticky quenched particles and makes them easier to sieve, thus providing power support for the operation of the crushing mechanism.

[0018] Preferably, the crushing mechanism further includes a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected to the upper left rear side of the crushing cylinder, and one end of the water outlet pipe is connected to the upper left front side of the crushing cylinder.

[0019] By adopting the above technical solution, the inlet and outlet pipes can be used to drive the flow of cooling water to accelerate the heat dissipation of quenched particles and achieve the purpose of heat recovery.

[0020] Preferably, the cleaning mechanism includes a front fixed plate and a movable port. The left side of the front fixed plate is connected to the front right side of the recycling bin. A second motor is connected to the front side of the front fixed plate. A screw is connected to the output shaft of the second motor. A rear fixed plate is rotatably connected to one end of the screw. The left side of the rear fixed plate is connected to the rear right side of the recycling bin. An internal threaded ring is threaded onto the surface of the screw. A drive plate is connected to the left side of the internal threaded ring. The movable port is located on the upper right side of the recycling bin. The inner wall of the movable port is slidably connected to the side of the drive plate.

[0021] By adopting the above technical solution, the output shaft of the second motor connected to the front fixed plate can be rotated to drive the screw connected to the rear fixed plate to rotate. The rotation of the screw drives the internal threaded ring to move, and the movement of the internal threaded ring drives the moving plate to move within the moving opening, thereby improving the stability of the moving plate.

[0022] Preferably, the cleaning mechanism further includes a telescopic rod and a weighting bar. The top of the telescopic rod is connected to the bottom left side of the drive plate, and the bottom of the telescopic rod is connected to a lower hinge frame. The lower hinge frame is hinged to a cleaning brush. The bottom of the cleaning brush is attached to the top of the filter plate, and the bottom of the weighting bar is connected to the top of the cleaning brush.

[0023] By adopting the above technical solution, the telescopic rod can be used to provide directional guidance for the up and down movement of the cleaning brush hinged to the lower hinge frame, and the weighting strip can be used to ensure that the bottom of the cleaning brush is in contact with the surface of the filter plate.

[0024] (III) Beneficial Effects

[0025] This application provides a quenching particle recovery device for lead smelting. It has the following beneficial effects:

[0026] 1. This lead smelting quenching particle recovery device, through the setting of a screening mechanism, uses an electric telescopic tube at the top of the support plate to extend and retract, driving the filter plate at the top of the upper hinge frame to adjust its tilt angle. The quenching particles roll through the screen along the sides of the filter plate and baffle. Large quenching particles pass through the upper discharge port and are discharged along the upper guide plate, while small quenching particles fall to the bottom of the recovery box and pass through the lower discharge port and are discharged along the lower guide plate. This reduces the possibility of unfiltered quenching particles being discharged through the upper discharge port, improves the completion of quenching particle screening, increases screening efficiency, facilitates the direct reuse of quenching particles in subsequent processes, and reduces the working cost of the quenching particle recovery process.

[0027] 2. This lead smelting quenching particle recovery device, by setting up a crushing mechanism, pours quenching particles into the crushing cylinder through the discharge hopper, and the water inlet pipe delivers cooling water to the water passage chamber and then discharges it through the water outlet pipe. The output shaft of the first motor at the top of the arc plate rotates, which drives the rotating shaft to rotate. The rotating shaft drives the crushing plate to rotate, crushing the adhering quenching particles. After the electric push rod extends, it drives the blocking plate at the bottom of the connecting plate to move down and expose the discharge port, which facilitates the falling of quenching particles. This avoids the possibility that some quenching particles will enter the screening process without being crushed, improves the uniformity of quenching particle volume, and facilitates subsequent screening and reuse. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the external structure of this application from a top right view;

[0030] Figure 2 This is an enlarged schematic diagram of Part A of the structure of this application;

[0031] Figure 3 This is a schematic diagram of the external structure of this application from the left, rear, and top views;

[0032] Figure 4 This is a schematic diagram of the cross-sectional structure from the left side and from below in this application;

[0033] Figure 5 This is an enlarged schematic diagram of Part B of this application;

[0034] Figure 6 This is a schematic diagram of the right-side top-view cross-sectional structure of this application;

[0035] Figure 7 This is an enlarged schematic diagram of the structure of part C of this application.

[0036] In the diagram: 1. Recycling bin; 2. Crushing mechanism; 201. Feed hopper; 202. Crushing cylinder; 203. Discharge port; 204. Arc plate; 205. First motor; 206. Rotating shaft; 207. Crushing plate; 208. Electric push rod; 209. Connecting plate; 210. Blocking plate; 211. Water inlet pipe; 212. Water outlet pipe; 3. Screening mechanism; 301. Support plate; 302. Electric telescopic pipe; 303. Upper hinge frame; 30 4. Filter plate; 305. Baffle; 306. Upper discharge port; 307. Upper guide plate; 308. Lower discharge port; 309. Lower guide plate; 4. Cleaning mechanism; 401. Front fixed plate; 402. Second motor; 403. Screw; 404. Rear fixed plate; 405. Internal threaded ring; 406. Drive plate; 407. Moving port; 408. Telescopic rod; 409. Lower hinge frame; 410. Cleaning brush; 411. Weighting bar. Detailed Implementation

[0037] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6This application provides a lead smelting quenching particle recovery device, including a recovery box 1, a crushing mechanism 2 for crushing quenching particles, and a cleaning mechanism 4 for removing quenching particles accumulated in the sieve holes. The recovery box 1 is equipped with a screening mechanism 3 for separating quenching particles of different sizes. The screening mechanism 3 includes a filter plate 304 and a baffle 305. The filter plate 304 is disposed inside the recovery box 1, and the bottom of the baffle 305 is connected to the top of the filter plate 304. A support plate 301 is connected to the left side of the inner wall of the recovery box 1. An electric telescopic tube 302 (model SC-25-500-S-LB) is connected to the top of the support plate 301. An upper hinge frame 303 is hinged to the top of the electric telescopic tube 302, and the top of the upper hinge frame 303 is connected to the bottom left side of the filter plate 304. A section is opened on the lower right side of the recovery box 1. The upper discharge port 306 is rotatably connected to the front and rear sides of the filter plate 304 on both sides of the inner wall of the upper discharge port 306. The upper guide plate 307 is connected to the lower right side of the upper discharge port 306. The lower discharge port 308 is opened on the lower left side of the recycling box 1. The lower guide plate 309 is connected to the lower left side of the lower discharge port 308. The crushing mechanism 2 is connected to the top of the recycling box 1. The cleaning mechanism 4 is connected to the right side of the recycling box 1. The electric telescopic tube 302 on the top of the support plate 301 extends and retracts, which drives the filter plate 304 on the top of the upper hinge frame 303 to adjust the tilt angle. The quenched particles roll through the filter plate 304 and the side of the baffle 305. Large quenched particles pass through the upper discharge port 306 and are discharged along the upper guide plate 307. Small quenched particles fall to the bottom of the recycling box 1 and pass through the lower discharge port 308 and are discharged along the lower guide plate 309.

[0040] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6In one aspect of this embodiment, the crushing mechanism 2 includes a hopper 201 and an electric push rod 208 (model SCA2-FB-25-500). The lower side of the hopper 201 is connected to the top left side of the recycling box 1. A crushing cylinder 202 is connected to the bottom of the hopper 201. A water passage chamber is provided inside the crushing cylinder 202. A discharge port 203 is opened at the bottom of the crushing cylinder 202. The top of the electric push rod 208 is connected to the top of the inner wall of the recycling box 1. A connecting plate 209 is connected to the bottom of the electric push rod 208. A blocking plate 210 is connected to the top right side of the connecting plate 209. The side of the blocking plate 210 fits against the inner wall of the discharge port 203. An arc-shaped plate 204 is connected to the front left side of the recycling box 1. A first motor 205 (model AO2-7124) is connected to the top of the arc-shaped plate 204. The output shaft of motor 205 is connected to a rotating shaft 206. A crushing plate 207 is connected to the surface of the rotating shaft 206. A water inlet pipe 211 is connected to the upper left side of the rear side of the crushing cylinder 202. A water outlet pipe 212 is connected to the upper left side of the front side of the crushing cylinder 202. The water outlet pipe 212 and the water inlet pipe 211 are respectively connected to the front and rear sides of the water passage chamber. The quenched particles are poured into the crushing cylinder 202 by the discharge hopper 201. The water inlet pipe 211 delivers cooling water to the water passage chamber and then discharges it through the water outlet pipe 212. The output shaft of the first motor 205 at the top of the arc plate 204 rotates, which drives the rotating shaft 206 to rotate. The rotation of the rotating shaft 206 drives the crushing plate 207 to rotate, crushing the adhering quenched particles. The electric push rod 208 extends, causing the blocking plate 210 at the bottom of the connecting plate 209 to move down and expose the discharge port 203, which facilitates the falling of the quenched particles.

[0041] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7In one aspect of this embodiment, the cleaning mechanism 4 includes a front fixed plate 401 and a movable port 407. The left side of the front fixed plate 401 is connected to the front right side of the recycling bin 1. A second motor 402 (model AO2-7124) is connected to the front side of the front fixed plate 401. The output shaft of the second motor 402 is connected to a screw 403. One end of the screw 403 is rotatably connected to a rear fixed plate 404. The left side of the rear fixed plate 404 is connected to the rear right side of the recycling bin 1. An internal threaded ring 405 is threaded onto the surface of the screw 403. A driving plate 406 is connected to the left side of the internal threaded ring 405. The movable port 407 is located on the upper right side of the recycling bin 1. The inner wall of the movable port 407 is slidably connected to the side of the driving plate 406. The bottom left side of the driving plate 406 is... A telescopic rod 408 is connected, and a lower hinge frame 409 is connected to the bottom of the telescopic rod 408. A cleaning brush 410 is hinged to the lower hinge frame 409. The bottom of the cleaning brush 410 is in contact with the top of the filter plate 304. A weighting strip 411 is connected to the top of the cleaning brush 410. The output shaft of the second motor 402 connected to the front fixed plate 401 rotates, which drives the rear fixed plate 404 to rotate and the connecting screw 403 to rotate. The rotation of the screw 403 drives the internal threaded ring 405 to move. The movement of the internal threaded ring 405 drives the moving plate 406 in the moving port 407 to move. The movement of the moving plate 406 drives the lower hinge frame 409 at the bottom of the telescopic rod 408 to move. The movement of the lower hinge frame 409 drives the cleaning brush 410 connected with the weighting strip 411 to move and clean the quenched particles.

[0042] All electrical devices in this plan are powered by an external power source.

[0043] Working principle: During use, quenched particles are poured into the crushing cylinder 202 through the hopper 201. Cooling water is delivered to the water passage chamber through the inlet pipe 211 and discharged through the outlet pipe 212 to recover the heat of the quenched particles. The output shaft of the first motor 205 at the top of the arc plate 204 rotates, driving the rotating shaft 206 to rotate. The rotating shaft 206 drives the crushing plate 207 to rotate, crushing the adhering quenched particles. The electric telescopic tube 302 at the top of the support plate 301 extends and retracts, causing the filter plate 304 at the top of the upper hinge frame 303 to adjust its tilt angle to the target value. The electric push rod 208 extends, causing the blocking plate 210 at the bottom of the connecting plate 209 to move down and expose the discharge port 203, facilitating the quenched particles to fall onto the surface of the filter plate 304. The quenched particles flow along the filter plate 304. The filter plate 304 and baffle 305 roll through the screen. Large quenched particles pass through the upper discharge port 306 and are discharged along the upper guide plate 307. Small quenched particles fall to the bottom of the recovery box 1 and pass through the lower discharge port 308 and are discharged along the lower guide plate 309. The output shaft of the second motor 402 connected to the front fixed plate 401 rotates, which drives the rear fixed plate 404 to rotate and the connecting screw 403 to rotate. The rotation of the screw 403 drives the internal thread ring 405 to move. The movement of the internal thread ring 405 drives the moving plate 406 in the moving port 407 to move. The movement of the moving plate 406 drives the lower hinge frame 409 at the bottom of the telescopic rod 408 to move. The movement of the lower hinge frame 409 drives the cleaning brush 410 connected with the weight-adding strip 411 to move and clean the quenched particles.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lead smelting quenching particle recovery device, comprising a recovery box (1), a crushing mechanism (2) for crushing the quenching particles, and a cleaning mechanism (4) for removing the quenching particles accumulated in the sieve holes, characterized in that: The recycling bin (1) is equipped with a screening mechanism (3) for separating quenched particles of different sizes. The screening mechanism (3) includes a filter plate (304) and a baffle (305). The filter plate (304) is installed inside the recycling bin (1). The bottom of the baffle (305) is connected to the top of the filter plate (304). The crushing mechanism (2) is connected to the top of the recycling bin (1). The cleaning mechanism (4) is connected to the right side of the recycling bin (1).

2. The lead smelting granule recovery device according to claim 1, characterized in that: The screening mechanism (3) also includes a support plate (301) and an electric telescopic tube (302). The left side of the support plate (301) is connected to the left side of the inner wall of the recycling box (1). The bottom of the electric telescopic tube (302) is connected to the top of the support plate (301). An upper hinge frame (303) is hinged to the top of the electric telescopic tube (302). The top of the upper hinge frame (303) is connected to the bottom left side of the filter plate (304).

3. The lead smelting granule recovery device according to claim 2, characterized in that: The screening mechanism (3) further includes an upper discharge port (306) and a lower discharge port (308). The upper discharge port (306) is located on the lower right side of the recycling box (1). The front and rear sides of the inner wall of the upper discharge port (306) are rotatably connected to the front and rear right sides of the filter plate (304). An upper guide plate (307) is connected to the lower right side of the upper discharge port (306). The lower discharge port (308) is located on the lower left side of the recycling box (1). A lower guide plate (309) is connected to the lower left side of the lower discharge port (308).

4. The lead smelting granule recovery device according to claim 3, characterized in that: The crushing mechanism (2) includes a feeding hopper (201) and an electric push rod (208). The lower side of the feeding hopper (201) is connected to the top left side of the recycling box (1). The bottom of the feeding hopper (201) is connected to a crushing cylinder (202). A water passage chamber is provided inside the crushing cylinder (202). A discharge port (203) is opened at the bottom of the crushing cylinder (202). The top of the electric push rod (208) is connected to the top of the inner wall of the recycling box (1). A connecting plate (209) is connected to the bottom of the electric push rod (208). A blocking plate (210) is connected to the top right side of the connecting plate (209). The side of the blocking plate (210) is in contact with the inner wall of the discharge port (203).

5. The lead smelting granule recovery device according to claim 4, characterized in that: The crushing mechanism (2) further includes an arc plate (204) and a crushing plate (207). The rear side of the arc plate (204) is connected to the left side of the front side of the recycling box (1). A first motor (205) is connected to the top of the arc plate (204). The output shaft of the first motor (205) is connected to a rotating shaft (206). The crushing plate (207) is connected to the surface of the rotating shaft (206).

6. The lead smelting granule recovery device according to claim 5, characterized in that: The crushing mechanism (2) also includes an inlet pipe (211) and an outlet pipe (212). The inlet pipe (211) is connected to the upper left rear side of the crushing cylinder (202), and one end of the outlet pipe (212) is connected to the upper left front side of the crushing cylinder (202).

7. A lead smelting granule recovery device according to claim 5, characterized in that: The cleaning mechanism (4) includes a front fixed plate (401) and a movable port (407). The left side of the front fixed plate (401) is connected to the front right side of the recycling box (1). A second motor (402) is connected to the front side of the front fixed plate (401). The output shaft of the second motor (402) is connected to a screw (403). One end of the screw (403) is rotatably connected to a rear fixed plate (404). The left side of the rear fixed plate (404) is connected to the rear right side of the recycling box (1). An internal threaded ring (405) is threaded onto the surface of the screw (403). A drive plate (406) is connected to the left side of the internal threaded ring (405). The movable port (407) is located above the right side of the recycling box (1). The inner wall of the movable port (407) is slidably connected to the side of the drive plate (406).

8. The lead smelting granule recovery device according to claim 7, characterized in that: The cleaning mechanism (4) also includes a telescopic rod (408) and a weighting bar (411). The top of the telescopic rod (408) is connected to the bottom left side of the drive plate (406). The bottom of the telescopic rod (408) is connected to a lower hinge frame (409). The lower hinge frame (409) is hinged to a cleaning brush (410). The bottom of the cleaning brush (410) is attached to the top of the filter plate (304). The bottom of the weighting bar (411) is connected to the top of the cleaning brush (410).

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