Dust removal structure of crystallizer

Abstract

The utility model relates to the technical field of metallurgy, and particularly discloses a crystallizer dust removal structure which comprises a dust remover and a dust collection pipeline, and the dust collection pipeline is divided into a first dust collection path and a second dust collection path which are respectively located on two sides of a crystallizer and connected to the dust remover through the dust collection pipeline. The dust remover comprises a filtering cavity and a storage cavity, a filtering pipe and an auxiliary dust removing component are arranged at the top of the filtering cavity, and smoke particles can be efficiently filtered. The auxiliary dust removal component adopts an atomization technology, smaller particles are captured by spraying water mist, and the dust removal efficiency is improved. Convenience of cleaning and maintenance is considered in the structural design, so that the filter pipe is simple and quick to mount and replace. In addition, a discharging opening is formed in the bottom of the dust remover, and dust in the storage cavity can be conveniently cleaned through a material receiving piece cover. In general, the dust removal structure of the crystallizer has the beneficial effects of high efficiency, fineness, convenience and the like, the dust removal effect of the crystallizer can be effectively improved, and cleanness and safety of the production environment are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a crystallizer dust removal structure. Background Art

[0002] In the metallurgical field, dust collectors are devices used to remove solid particles and other pollutants from exhaust gases emitted during the production process. These devices are usually used in smelting, steelmaking, casting and other metallurgical processes. The working principle of metallurgical dust collectors is usually to capture or convert solid particles in exhaust gases into a more manageable form through physical or chemical methods to purify the air and protect the environment.

[0003] The crystallizer dust collector is a device specially designed to capture dust and exhaust gas generated during the operation of the crystallizer. Traditional dust removal structures often have problems such as unsatisfactory dust removal effect, easy clogging, and difficult maintenance. Metallurgical crystallizers are usually used in the crystallization process in the metallurgical industry to produce metal or alloy crystals with specific shapes and structures. In these processes, some exhaust gas and solid particles are usually generated, so dust removal equipment is needed to purify the environment.

[0004] The patent "Crystallizer Copper Tube Smelting Furnace Dust Removal Device" (publication number CN206832065U, hereinafter referred to as prior art 1) discloses a crystallizer dust removal device, wherein the dust removal device is provided with a rotating flange and an induced draft hood, wherein the induced draft hood is connected to the rotating flange, and the induced draft hood rotates based on the rotating flange; the induced draft hood can rotate 360°, and covers different angles of the furnace body through its rotation; since the smoke generated in the metallurgical field contains particles, if it is not processed in time, the dust removal efficiency will be greatly reduced; however, the dust collector in prior art 1 does not have a solution, which results in the dust collector in prior art 1 being unable to perform a good self-cleaning function, and being unable to automatically clean the smoke and dust accumulation area after the working efficiency becomes low, and restore the working efficiency; after this situation occurs, manual cleaning is required. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a crystallizer dust removal structure to solve the problem that the dust collector in the prior art has a lot of smoke and dust accumulation, resulting in reduced dust removal efficiency and reduced dust removal quality, and cannot automatically clean the accumulated smoke and dust.

[0006] In the first aspect, the embodiment of the utility model provides a crystallizer dust removal structure, including a dust collector and a dust suction duct connected to the dust collector; the dust suction duct includes a first dust suction path duct and a second dust suction path dust suction duct; the first dust suction path duct and the second dust suction path dust suction duct are respectively arranged on both sides of the crystallizer; the first dust suction path duct is provided with a first dust suction port, and the second dust suction path dust suction duct is provided with a second dust suction port; the first dust suction port and the second dust suction port are both arranged above the crystallizer; the first dust suction path duct and the second dust suction path dust suction duct are both connected by the dust collector through the dust removal duct; the dust collector includes a box body; the box body includes a filter chamber and a storage chamber; the filter chamber is arranged at the top of the storage chamber; the filter chamber is provided with a plurality of filter tubes at the top, and the filter tubes are provided with filter nets; the filter tubes are arranged in a pipeline type, and the top of the filter tubes is also provided with an auxiliary dust removal component; the auxiliary dust removal component is provided with auxiliary dust removal nozzles corresponding to the plurality of filter tubes one by one.

[0007] Preferably, the auxiliary dust removal component includes a main pipeline and a number of branch pipelines that are evenly spaced and connected to the main pipeline; the main pipeline is arranged on the outside of the box; a number of the branch pipelines extend to the inside of the box; and a number of the branch pipelines are arranged at the top of the filter tube in the filter cavity.

[0008] Preferably, a plurality of the auxiliary dust removal nozzles are arranged on the branch pipe at uniform intervals; the interval is the distance between the axial center lines of two adjacent filter tubes; and the auxiliary dust removal nozzles are atomizing nozzles.

[0009] Preferably, a limit cover is provided at one end of the filter tube connected to the auxiliary dust removal nozzle; the limit cover is provided with a connecting end and an enlarged end; the enlarged end is arranged at an angle; and the auxiliary dust removal nozzle is connected to the connecting end.

[0010] Preferably, a mounting plate is also provided on the top of the filter tube; both sides of the mounting plate are fixedly connected to the side walls of the box; through holes are provided at positions corresponding to the filter tube and the filter tube; the filter tube passes through the through holes and is hung on the top of the through hole of the mounting plate.

[0011] Preferably, one end of the main pipeline is closed and the other end is connected; a connecting flange is provided at the end of the main pipeline that is connected.

[0012] Preferably, the main pipeline is externally connected to a pulse jet device through the connecting flange; the pulse jet device is connected to the main pipeline and exhausts air through a plurality of the branch pipelines.

[0013] Preferably, the main pipeline is externally connected to a high-pressure water spraying device through the connecting flange; the high-pressure water spraying device is connected to the main pipeline and drains water through a plurality of the branch pipelines.

[0014] Preferably, the first dust suction path pipe includes a first dust removal motor; the second dust suction path dust suction pipe includes a second dust removal motor; dust suction pipes are respectively provided at both ends of the first dust removal motor and the second dust removal motor; the first dust removal motor and the second dust removal motor transport the smoke and dust at the crystallizer to the inside of the box through the dust suction pipes respectively provided at both ends.

[0015] Preferably, a discharge port is provided at the bottom of the box body, and the discharge port is covered by a material receiving piece; and the side wall of the box body at a part of the storage cavity is arranged in an inclined manner.

[0016] The crystallizer dust removal structure provided by the utility model has the following beneficial effects:

[0017] Through multiple dust suction pipes and separate motor settings for each dust suction pipe, the smoke generated by the crystallizer during operation can be effectively sucked into the dust collector through the dust suction path pipe. This dual-path design can improve the dust removal efficiency and ensure that the smoke inside the crystallizer is fully removed. Several filter tubes are arranged in the filter chamber of the dust collector. These filter tubes are covered with filter screens, which can effectively filter the smoke particles and ensure that the exhaust gas meets environmental protection standards. The setting of auxiliary dust removal components further enhances the dust removal effect. The auxiliary dust removal nozzle can work automatically to automatically clean the smoke accumulated on the filter screen of the filter tube, which has an effective self-cleaning or dust cleaning effect and improves the dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0019] Figure 1 It is a schematic diagram of the overall dust removal of a crystallizer dust removal structure;

[0020] Figure 2 It is a schematic diagram of a dust collector box for crystallizer dust removal;

[0021] Figure 3 It is a schematic diagram of the internal structure of a dust collector of a crystallizer dust removal structure;

[0022] Parts and numbers in the picture:

[0023] 10-dust collector, 11-housing, 111-filter chamber, 112-storage chamber, 12-filter tube, 13-filter screen, 14-mounting plate, 15-first dust removal motor, 16-second dust removal motor, 17-discharge port, 18-material receiving piece; 20-dust suction duct, 21-first dust suction path duct, 22-second dust suction path dust suction duct, 211-first dust suction port, 221-second dust suction port; 30-crystallizer; 41-main pipeline, 42-branch pipeline, 43-auxiliary dust removal nozzle, 44-limiting cover, 441-connecting end, 442-enlarging end, 45-connecting flange. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0025] Example 1

[0026] See also Figure 1The embodiment of the utility model provides a crystallizer dust removal structure, including a dust collector 10 and a dust suction pipe 20 connected to the dust collector 100; the dust suction pipe 20 includes a first dust suction path pipe 21 and a second dust suction path pipe 22; the first dust suction path pipe 21 and the second dust suction path pipe 22 are respectively arranged on both sides of the crystallizer 30; the first dust suction path pipe 21 is provided with a first dust suction port 211, and the second dust suction path pipe 22 is provided with a second dust suction port 221; the first dust suction port 211 and the second dust suction port 221 are both arranged above the crystallizer 30; the first dust suction path pipe 21 and the second dust suction path pipe 22 are both connected by the dust collector 10 through the dust removal pipe When the crystallizer 30 crystallizes the steel billet, waste dust will be generated inside and outside the crystallizer 30, which needs to be collected to protect hygiene and the working environment. Due to the position coverage of the crystallizer 30, at least two dust suction paths are used to cover it, and the two dust suction paths are respectively arranged on different sides of the crystallizer 30 to remove dust; the first dust suction path pipe 21 and the second dust suction path pipe 22 are both connected to the interior of the dust collector 10, and their paths are extended through the dust removal pipes, so that it is possible to achieve longer path coverage; since the working environment of the crystallizer 30 is a high-temperature environment, being too close to the crystallizer 30 will be damaged due to excessive heat. This setting also further protects the safety of the dust collector 10 itself.

[0027] See also Figure 2 The dust collector 10 includes a housing 11; the housing 11 includes a filter chamber 111 and a storage chamber 112; the filter chamber 111 is arranged at the top of the storage chamber 112; the filter chamber 111 is provided with a plurality of filter tubes 12 fixed at the top of the filter chamber 111, and a filter screen 13 is arranged on each of the filter tubes 12; the filter tubes 12 are arranged in a pipeline type, and an auxiliary dust removal component is also arranged at the top of the filter tubes 12; see Figure 3The auxiliary dust removal component is provided with auxiliary dust removal nozzles 43 corresponding to the plurality of filter tubes 12; the auxiliary dust removal nozzles 43 are atomizing nozzles; a setting space is formed inside the box body 11, and a filter chamber 111 and a storage chamber 112 are provided. The filter chamber 111 is used for the smoke dust transported to the inside of the boiler by the first dust suction path pipe 21 and the second dust suction path pipe 22; the storage chamber 112 is used to store the smoke dust dropped from the filter chamber 111; the filter chamber 111 is provided with a large number of boiler tubes, and the boiler The furnace tube is extended from the top of the filter cavity 111 to the top of the storage cavity 112; the filter tube 12 is a pipe-type hollow setting, and smoke and dust can pass through the hollow without falling into the storage cavity 112; and a filter net 13 is arranged on the side wall of the filter tube 12, and part of the smoke and dust that falls directly into the storage cavity 112 will also be adsorbed by the filter net 13, thereby achieving a better filtering effect; the top of the filter tube 12 is also provided with a nozzle for auxiliary dust removal, and this nozzle can spray water or emit air, respectively achieving different auxiliary dust removal effects.

[0028] Example 2

[0029] See also Figure 3 The embodiment of the utility model provides a crystallizer dust removal structure, wherein the auxiliary dust removal component includes a main pipeline 41 and a plurality of branch pipelines 42 connected to the main pipeline 41 at uniform intervals; the main pipeline 41 is arranged outside the box 11; a plurality of branch pipelines 42 are extended and arranged inside the box 11; a plurality of branch pipelines 42 are arranged on the top of the filter tube 12 in the filter cavity 111. A plurality of auxiliary dust removal nozzles 43 are arranged on the branch pipeline 42 at uniform intervals; the interval is the distance between the axis lines of two adjacent filter tubes 12. A limit cover 44 is provided at one end of the filter tube 12 connected to the auxiliary dust removal nozzle 43; the limit cover 44 is provided with a connecting end 441 and an enlarged end 442; the enlarged end 442 is inclined; the two ends of the limit cover 44 are respectively connected to the filter tube 12 and the auxiliary dust removal nozzle 43; no matter whether the auxiliary dust removal nozzle 43 is spraying water or jetting air, the position of the water and air sprayed by it can be limited, so that the water and air sprayed by it will enter the interior of the filter tube 12, so that the cleaning or dust removal effect on the interior of the filter tube 12 is better; see Figure 1 or Figure 2 Furthermore, the main pipeline 41 is installed through a mounting frame 46 provided on the chassis 11 of the dust collector 10; and the main pipeline 41 is connected to each of the branch pipelines 42 through a valve 47, and the operation of each branch pipeline 42 is controlled by switching the valve 47; generally, the valves 47 of all the branch pipelines 42 are in an open state.

[0030] See also Figure 3, the auxiliary dust removal nozzle 43 is connected to the connection end 441. The main pipeline 41 is arranged in a cavity, and is inclined from one end to the other end of the main pipeline 41; the inclination is set from the end connected to the external equipment to the other end; a plurality of branch pipelines 42 are arranged, which are connected to the main pipeline 41 at a preset interval, and a plurality of openings are arranged on the branch pipelines 42, and the openings are used to set the auxiliary dust removal nozzles 43; the auxiliary dust removal nozzles 43 are arranged at the top of the hollow part inside the filter tube 12.

[0031] Preferably, a mounting plate 14 is further provided on the top of the filter tube 12; both sides of the mounting plate 14 are fixedly connected to the side walls of the box body 11; through holes are provided at positions of the mounting plate 14 corresponding to the filter tube 12; the filter tube 12 passes through the through holes and is hung on the top of the through hole of the mounting plate 14. A receiving portion extending outward is provided on the top of the filter tube 12, and the receiving portion contacts the hole on the mounting plate 14, and the filter tube 12 is hung on the mounting plate 14 through the receiving portion of the mounting portion; and a gap is provided between each filter tube 12.

[0032] Preferably, one end of the main pipeline 41 is closed and the other end is connected; a connecting flange 45 is provided at the end of the main pipeline 41. The external equipment is connected to the main pipeline 41 through the connecting flange 45, and is controlled by the external equipment to work after the connection; because the main pipeline 41 is arranged in an inclined manner, the overall pressure can be increased, so that the external equipment works more efficiently.

[0033] Preferably, the main pipeline 41 is externally connected to a pulse jet device through the connecting flange 45 ; the pulse jet device is connected to the main pipeline 41 and exhausts air through a plurality of the branch pipelines 42 . When the filter screen 13 of the filter tube 12 has been working for a long time, more smoke and dust will accumulate on the filter screen 13; although most of the smoke and dust falls into the storage chamber 112 through the inside of the filter tube 12, there is still a part of the smoke and dust accumulated on the filter screen 13 and cannot fall off, and external assistance is required to remove it; at this time, an external pulse blowing device can be connected; its pulse blowing device is connected to the main pipeline 41 through the connecting flange 45 on the main pipeline 41, and after connection, its pulse blowing device starts to work, and applies pressure to the inside of the main pipeline 41 to start blowing; after the branch pipeline 42 is connected to the main pipeline 41, the blown air enters the inside of the branch pipeline 42; the branch pipeline 42 is blown through the auxiliary dust removal nozzle 43; the smoke and dust on the filter screen 13 of the filter tube 12 are blown away by its high-pressure blowing, and the fallen smoke and dust fall into the storage chamber 112 in the direction of the blowing.

[0034] Preferably, the main pipeline 41 is externally connected to a high-pressure water spraying device through the connecting flange 45 ; the high-pressure water spraying device is connected to the main pipeline 41 and drains water through a plurality of the branch pipelines 42 . After the smoke and dust on the filter screen 13 of the filter tube 12 falls off, there will still be smoke and dust involved, which makes the internal working environment worse with the use time; when cleaning is needed, the filter tube 12 in the dust collector 10 needs to be disassembled and cleaned, which is troublesome; at this time, the external device can be connected through the connecting flange 45 of the main pipeline 41, and the external device is a high-pressure water spraying device; the high-pressure water spraying device is connected to the main pipeline 41; after the connection, the high-pressure water spraying device starts to spray water, and through the inclined setting of its main pipeline 41, it can keep a pressure all the time, so that the cleaning effect when spraying water is better; through the connection of the main pipeline 41 and the branch pipeline 42, several auxiliary dust removal nozzles 43 are entered, and several filter tubes 12 and the filter screens 13 on the filter tubes 12 are sprayed and washed, and waste water is collected through the storage chamber 112; further, water can be sprayed at the same time during dust removal to moisten the smoke and dust so that it can fall more easily into the receiving piece 18; it can also reduce the smoke concentration during work and optimize its working environment.

[0035] See also Figure 1 The first dust removal path pipe 21 includes a first dust removal motor 15; the second dust removal path pipe 22 includes a second dust removal motor 16; the first dust removal motor 15 and the second dust removal motor 16 are respectively provided with dust removal pipes 20 at both ends; the first dust removal motor 15 and the second dust removal motor 16 transport the smoke and dust at the crystallizer 30 to the inside of the box body 11 through the dust removal pipes 20 respectively provided at both ends. Each dust removal path is provided with a dust removal motor, which works separately to ensure the efficiency and quality of the work; each dust removal motor is controlled separately to remove dust from one area or two areas.

[0036] See also Figure 2 A discharge port 17 is provided at the bottom of the box body 11, and the discharge port 17 is covered by a material receiving piece 18; the side wall of the box body 11 at a part of the storage cavity 112 is inclined; all smoke and waste water slide into the material receiving piece 18 through the inclined side wall of the box body 11, which is convenient for treatment; the side wall of the storage cavity 112 at the discharge port 17 is inclined, which is convenient for smoke or cleaning water to slide along the side wall of the storage cavity 112 to the inside of the material receiving piece 18; its inclined side wall facilitates the sliding of smoke and cleaning water, and slides along the side wall into the material receiving piece 18.

[0037] Example 3

[0038] See also Figure 1The embodiment of the utility model provides a crystallizer dust removal structure. The crystallizer dust removal structure provided by the utility model has the following beneficial effects: through multiple dust suction pipes 20 and a separate motor setting for each dust suction pipe 20, the smoke generated by the crystallizer 30 during operation can be effectively sucked into the dust collector 10 through the dust suction path pipe. This dual-path design can improve the dust removal efficiency and ensure that the smoke inside the crystallizer 30 is fully removed. A plurality of filter tubes 12 are arranged in the filter chamber 111 of the dust collector 10. These filter tubes 12 are covered with filter screens 13, which can effectively filter smoke particles and ensure that the discharged gas meets environmental protection standards. The setting of the auxiliary dust removal component further enhances the dust removal effect. The auxiliary dust removal nozzle 43 can spray air or water, and work through high pressure to spray water or gas onto the filter screen 13 of the filter tube 12, which has an effective cleaning or dust removal effect and improves the dust removal efficiency.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A crystallizer dust removal structure, characterized in that: Comprising a dust collector (10) and a dust suction duct (20) connected to the dust collector (10); the dust suction duct (20) comprises a first dust suction path duct and a second dust suction path duct; the first dust suction path duct and the second dust suction path duct are respectively arranged on both sides of the crystallizer (30); The first dust suction path pipe is provided with a first dust suction port (211), and the second dust suction path pipe is provided with a second dust suction port (221); the first dust suction port (211) and the second dust suction port (221) are both provided above the crystallizer (30); the first dust suction path pipe and the second dust suction path pipe are both connected by the dust collector (10) via a dust removal pipe; The dust collector (10) comprises a housing (11); the housing (11) comprises a filter chamber (111) and a storage chamber (112); the filter chamber (111) is arranged at the top of the storage chamber (112); a plurality of filter tubes (12) are arranged at the top of the filter chamber (111), and a filter screen (13) is arranged on each of the filter tubes (12); the filter tubes (12) are arranged in a pipeline-like manner, and an auxiliary dust removal component is also arranged at the top of the filter tube (12); the auxiliary dust removal component is provided with auxiliary dust removal nozzles (43) in a one-to-one correspondence with the plurality of filter tubes (12).

2. A crystallizer dust removal structure according to claim 1, characterized in that: The auxiliary dust removal component comprises a main pipeline (41) and a plurality of branch pipelines (42) connected to the main pipeline (41) at even intervals; the main pipeline (41) is arranged outside the box (11); a plurality of the branch pipelines (42) are extended inside the box (11); and a plurality of the branch pipelines (42) are arranged at the top of the filter tube (12) in the filter cavity (111).

3. A crystallizer dust removal structure according to claim 2, characterized in that: A plurality of the auxiliary dust removal nozzles (43) are arranged on the branch pipe (42) at uniform intervals; the interval is the distance between the axis lines of two adjacent filter tubes (12); and the auxiliary dust removal nozzles (43) are atomizing nozzles.

4. A crystallizer dust removal structure according to claim 2, characterized in that: A limiting cover (44) is provided at one end of the filter tube (12) connected to the auxiliary dust removal nozzle (43); the limiting cover (44) is provided with a connecting end (441) and an enlarged end (442); the enlarged end (442) is arranged in an inclined manner; and the auxiliary dust removal nozzle (43) is arranged in connection with the connecting end (441).

5. A crystallizer dust removal structure according to claim 4, characterized in that: A mounting plate (14) is also provided on the top of the filter tube (12); both sides of the mounting plate (14) are fixedly connected to the side walls of the box body (11); through holes are provided at positions corresponding to the mounting plate (14) and the filter tube (12); the filter tube (12) passes through the through holes and is hung on the top of the through holes of the mounting plate (14).

6. A crystallizer dust removal structure according to claim 2, characterized in that: One end of the main pipeline (41) is closed, and the other end is open; a connecting flange (45) is provided at the open end of the main pipeline (41).

7. A crystallizer dust removal structure according to claim 6, characterized in that: The main pipeline (41) is externally connected to a pulse jet device via the connecting flange (45); the pulse jet device is connected to the main pipeline (41) and exhausts air via a plurality of the branch pipelines (42).

8. A crystallizer dust removal structure according to claim 6, characterized in that: The main pipeline (41) is externally connected to a high-pressure water spraying device via the connecting flange (45); the high-pressure water spraying device is connected to the main pipeline (41) and drains water via the plurality of branch pipelines (42).

9. A crystallizer dust removal structure according to claim 1, characterized in that: The first dust suction path pipeline comprises a first dust removal motor (15); the second dust suction path pipeline comprises a second dust removal motor (16); dust suction pipelines (20) are respectively provided at both ends of the first dust removal motor (15) and the second dust removal motor (16); the first dust removal motor (15) and the second dust removal motor (16) transport smoke and dust at the crystallizer (30) to the interior of the box (11) via the dust suction pipelines (20) respectively provided at both ends.

10. A crystallizer dust removal structure according to claim 1, characterized in that: The bottom of the box body (11) is provided with a material discharge port (17), and the material discharge port (17) is covered by a material receiving piece (18); the side wall of the box body (11) at a part of the storage cavity (112) is arranged in an inclined manner.

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