CN112169666A

CN112169666A - A mixed material device for processing of emulsion in water pesticide

Info

Publication number: CN112169666A
Application number: CN202010910501.9A
Authority: CN
Inventors: 曾辉华
Original assignee: Jiangxi Fuzhou Xinxing Chemical Co ltd
Current assignee: Jiangxi Fuzhou Xinxing Chemical Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-01-05

Abstract

The invention provides a material mixing device for processing an aqueous emulsion pesticide. The mixed material device for processing the emulsion in water pesticide comprises a shell, a first mixing device, a second mixing device and a controller, wherein the first mixing device is located at the top of an inner cavity of the shell, the second mixing device is contained in the inner cavity of the shell, the first mixing device comprises a first mixing shell, a first premixing component and an operation component, an inner cavity of the first mixing shell forms a first mixed feeding cavity, a discharge hole is formed in one side of the first mixing shell, a fixed part is arranged on one side wall of the discharge hole, a telescopic part is arranged on the other side wall of the discharge hole, the first premixing component is partially contained in the first mixed feeding cavity, the first premixing component comprises a motor, a first mixing structure and a sensor, and the motor is arranged at the top of the shell. The mixing material device for processing the emulsion in water pesticide has high mixing efficiency.

Description

A mixed material device for processing of emulsion in water pesticide

Technical Field

The invention relates to a material mixing device for processing an aqueous emulsion pesticide.

Background

The existing mixed material device for processing the emulsion in water pesticide is serious in homogenization and single in structure, if the material device is not fully mixed, the mixing efficiency is low, the quality of the prepared emulsion in water pesticide is poor, and the use experience of a user is influenced.

Disclosure of Invention

Therefore, the mixed material device for processing the emulsion in water pesticide has high mixing efficiency.

A mixed material device for processing an emulsion in water pesticide comprises a shell, a first mixing device, a second mixing device and a controller, wherein the first mixing device is positioned at the top of an inner cavity of the shell, the second mixing device is accommodated in the inner cavity of the shell, the first mixing device comprises a first mixing shell, a first premixing component and an operation component, the inner cavity of the first mixing shell forms a first mixed feeding cavity, a discharge hole is formed in one side of the first mixing shell, a fixed part is arranged on one side wall of the discharge hole, a telescopic part is arranged on the other side wall of the discharge hole, the first premixing component is partially accommodated in the first mixed feeding cavity, the first premixing component comprises a motor, a first mixing structure and a sensor, the motor is arranged at the top of the shell, and the first mixing structure comprises a pivot and a mixing strip group arranged on the pivot, the pivot is connected with the bottom of the motor, the mixing strip group comprises a plurality of mixing strips, the mixing strips are arranged around the periphery of the pivot, a plurality of mixing protrusions are arranged on each mixing strip, each mixing protrusion is in a V shape, the sharp top of each mixing protrusion gradually narrows towards the direction far away from the mixing strips, the sensor is arranged in the inner cavity of the first mixing shell and is electrically connected with the controller, the operating component is arranged on one side of the first mixing shell and comprises a first operating rod, a rotating part and a second operating part, the first operating rod is arranged on the top of the first mixing shell and is connected with the fixed part, the second operating part is connected with the first operating rod through the rotating part, and the second operating part is arranged in a staggered mode with the first operating rod, the bottom of the second operating piece is connected with the telescopic part, the second mixing device comprises a fixed connecting part, a second mixing body and a driving part, the fixed connecting part is provided with an installation opening, the driving part is installed in the installation opening, the second mixing body comprises a rotating shaft and mixing blades, one end of the rotating shaft is connected with the bottom of the driving part, the mixing blade is arranged on the rotating shaft, the number of the mixing blades is multiple, the mixing blades are uniformly arranged around the circumference of the rotating shaft, each mixing blade is provided with a heating element connected with the controller, the heating member is used for heating materials, locate second mixed structure in the casing, second mixed structure is used for making emulsion in water and liquid intensive mixing, second mixed structure's the position of setting is located first mixed structure's below.

Further, second mixed structure includes first mixed piece, second mixed piece and third mixed piece, first mixed piece the second mixed piece and the relative both ends of third mixed piece all with the interior fixed surface of casing is connected, first mixed piece the second mixed piece and the third mixed piece is followed the axial of casing is from last to setting gradually down, first mixed hole has been seted up on the first mixed piece, second mixed hole has been seted up on the second mixed piece, third mixed hole has been seted up on the third mixed piece, the aperture in first mixed hole is greater than the aperture in second mixed hole, the aperture in second mixed hole is greater than the aperture in third mixed hole.

Further, the first mixing structure further comprises a cone body arranged between the two adjacent mixing strips, the mixed material device for processing the emulsion in water pesticide further comprises a protection piece and a supporting part, the protection piece is arranged on the outer side of the shell, a temperature control cavity is formed in an inner cavity between the protection piece and the shell, the supporting part is arranged at the bottom end of the shell, the number of the supporting parts is three, and the three supporting parts are uniformly arranged around the periphery of the shell.

Furthermore, a feed port is formed in the top of the shell and is communicated with the first mixed feed cavity, a discharge hole is formed in the bottom of the shell, an air inlet hole communicated with the outside and the inner cavity of the shell is formed in one side of the shell, an air outlet hole communicated with the outside and the inner cavity of the shell is formed in one side of the shell, which is far away from the air inlet hole, and the air inlet hole and the air outlet hole are located above the side portion of the shell.

Further, the setting quantity of mixing strip group is a plurality of, and is a plurality of mix strip group edge the axial of pivot is from last to setting gradually down, each mix the strip and be the S-shaped.

Furthermore, the number of the mixed strip groups is four, and the mixed strip groups are sequentially arranged from top to bottom along the axial direction of the pivot.

Furthermore, each the surface of mixing the strip is provided with the heat dissipation layer, a plurality of circular ports have been seted up on the heat dissipation layer.

Further, the diameter of the circular holes is 0.3-0.5 mm.

Further, the apex angle of the V-shape of each of the mixing lobes is 10 to 40 degrees.

Further, the surface of the shell is provided with an aluminum alloy coating, and the thickness of the aluminum alloy coating is 0.3-0.8 mm.

The material mixing device for processing the emulsion in water pesticide of the invention arranges the first mixing device at the top of the inner cavity of the body, thereby playing the pre-mixing effect, the number of the mixing strip groups is multiple, the mixing strip groups are sequentially arranged from top to bottom along the axial direction of the pivot, the mixing strip group comprises a plurality of mixing strips, the mixing strips are arranged around the periphery of the pivot, each mixing strip is provided with a plurality of mixing convex parts, the mixing convex parts are V-shaped, the pointed top of each mixing convex part is gradually narrowed towards the direction far away from the mixing strip, the mixing strips are S-shaped, the width of each mixing strip is gradually increased along the direction far away from the pivot, therefore, the contact area between the mixing strips and the materials is increased from the transverse direction, the contact area between the mixing strips and the materials is increased from the longitudinal direction, and the mixing efficiency is high; meanwhile, a sensor is arranged in the inner cavity of the first mixing shell and used for sensing the numerical value of one of the concentration, the temperature and the like of the mixed materials in the inner cavity of the first mixing shell, and when the numerical value of the concentration, the temperature and the like of the mixed materials meets the working condition requirement, the mixed materials enter the inner cavity of the body through a pre-mixing discharge hole; the control assembly is arranged on one side of the first mixing shell and is used for driving the opening and closing of the discharge hole on the first mixing shell through the opening and closing of the first control lever and the second control piece; set up mixing arrangement in the body inner chamber, can further the misce bene, because a plurality of mixing blade set up in the axis of rotation, a plurality of mixing blade evenly set up around the circumference of axis of rotation, be equipped with on each mixing blade with the heating member that the controller is connected works as the material with during the heating member contact, when the material was stirred by a plurality of mixing blade, the heating member can be right the material heats, and then makes water emulsion and liquid mixing, and a plurality of mixing blade's the equal parallel and level each other of top surface, a plurality of mixing blade's the equal parallel and level each other of bottom surface makes the material mix more evenly.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic structural diagram of a mixed material device for processing an aqueous emulsion pesticide according to the invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of a first mixing structure of the mixed material device for processing the pesticide emulsion in the water shown in FIG. 1;

FIG. 4 is a schematic perspective view of a second mixing body of the mixing device for processing an aqueous emulsion pesticide shown in FIG. 3; and

fig. 5 is a schematic structural diagram of the closed operating component of the mixed material device for processing the pesticide emulsion in the water, which is shown in fig. 4.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, the present invention provides a material mixing device 100 for processing an aqueous emulsion pesticide, which includes a housing 10, a first mixing device 20, a protection member 30, a second mixing device 40, a support portion 50 and a controller (not shown), wherein the first mixing device 20 is located at the top of an inner cavity of the housing 10, the protection member 30 is disposed outside the housing 10, the second mixing device 40 is accommodated in the inner cavity of the housing 10, the support portion 50 is disposed at the bottom of the housing 10, the support portion 50 is used for supporting the housing 10, and the controller is disposed on an outer surface of the housing 10.

The surface of the shell is provided with an aluminum alloy coating, and the thickness of the aluminum alloy coating is 0.3-0.8 mm. The jack 11 has been seted up at the top of casing 10, and the inlet port 12 of intercommunication external world and casing 10 inner chamber has been seted up to one side of casing 10, and the venthole 13 of intercommunication external world and casing 10 inner chamber has been seted up to the one side of keeping away from inlet port 12 on casing 10, the inlet port with the venthole all is located the lateral part top of casing, feed port 14 has been seted up at casing 10 top, and the discharge opening (not shown in the figure) has been seted up to casing 10 bottom.

The first mixing device 20 comprises a first mixing housing 21, a first premixing assembly 22 and a manipulating assembly 23, wherein an inner cavity of the first mixing housing 21 forms a first mixing feeding cavity 211, one side of the first mixing housing 21 is provided with a discharging hole (not shown), the discharging hole is rectangular, one side wall of the discharging hole is provided with a fixed part (not shown), the other side wall of the discharging hole is provided with a telescopic part (not shown), the first premixing assembly 22 is partially accommodated in the first mixing feeding cavity 211, the first premixing assembly 22 comprises a motor 221, a first mixing structure 222 and a sensor (not shown), the motor 221 is located at the top of the housing 10, the first mixing structure 222 comprises a pivot 2221 and a mixing strip group arranged on the pivot 2221, the pivot 2221 is connected with the bottom of the motor 221, the mixing strip group is arranged in a plurality, the mixing strip groups are uniformly distributed in a row along the axial direction of the pivot 2221, that is, a plurality of mixing bar groups are sequentially arranged from top to bottom along the axial direction of the pivot 2221, each mixing bar group includes a plurality of mixing bars 2222, the plurality of mixing bars 2222 surround the periphery of the pivot 2221, each mixing bar 2222 is provided with a plurality of mixing protrusions 2223, each mixing protrusion 2223 is V-shaped, the vertex angle of the V-shape of the plurality of mixing protrusions 2223 is 10 to 40 degrees, and the vertex parts of the plurality of mixing protrusions 2223 are gradually narrowed toward the direction away from the mixing bars 2222. In this embodiment, the plurality of mixing bar groups are uniformly distributed in four rows along the axial direction of the pivot 2221, the surface of each mixing bar 2222 is provided with a heat dissipation layer, the heat dissipation layer is provided with a plurality of circular holes, the aperture of each circular hole is 0.3-0.5 mm, each mixing bar 2222 is S-shaped, the sensor is disposed in the inner cavity of the first mixing housing 21, the sensor is electrically connected with the controller, it can be understood that the sensor is configured to sense one of the concentration and the temperature of the mixture of the materials in the inner cavity of the first mixing housing and feed back the sensed one of the concentration and the temperature of the mixture of the materials to the controller, the operating component 23 is disposed at one side of the first mixing housing 21, the operating component includes a first operating part 231, a rotating part 232 and a second operating part 233, the first operating part 231 is disposed at the top of the first mixing housing 21 and is connected with the fixing part, the second manipulating member 233 is connected to the first manipulating member 231 through the rotating part 232, the second manipulating member 233 is disposed to be staggered with the first manipulating member 231, the bottom of the second manipulating member 233 is connected to the telescopic part, the top surfaces of the second manipulating member 233 and the first manipulating member 231 are flush with each other, and the bottom surfaces of the second manipulating member 233 and the first manipulating member 231 are flush with each other.

It will be appreciated that, in one embodiment, to increase the contact area between the material and the first mixing structure 222, the first mixing structure 222 further includes a cone 2224 disposed between two adjacent mixing strips 2222, the cone 2224 being substantially triangular.

As can be appreciated, in another embodiment, the plurality of hybrid protrusions 2223 are each rectangular in shape.

The guard 30 is disposed outside the housing 10, and an inner cavity between the guard 30 and the housing 10 forms a temperature manipulation cavity 301.

The second mixing device 40 is disposed in the inner cavity of the housing 10, the second mixing device 40 is far away from the first mixing housing 21, the second mixing device 40 includes a fixed connection portion 41, a second mixing body 42 and a driving portion 43, the fixed connection portion 41 is disposed in the inner cavity of the housing 10, a mounting opening 411 is formed on the fixed connection portion 41, the driving portion 43 is installed in the mounting opening 411, the second mixing body 42 is disposed at the bottom of the driving portion 43, the second mixing body 42 includes a rotating shaft 421 and mixing blades 422, one end of the rotating shaft 421 is connected with the driving portion 43, the mixing blades 422 are disposed on the rotating shaft 421, the number of the mixing blades 422 is plural, the plural mixing blades 422 are uniformly disposed around the rotating shaft 421, each mixing blade 422 is provided with a heating element 423 connected with the controller, when the material is mixed by the plural mixing blades 422, the material contacts with the heating element 423, the heating member 423 is used for heating the material, so as to promote the mixing of the water emulsion and the liquid, the top surfaces of the mixing blades 422 are flush with each other, and the bottom surfaces of the mixing blades 422 are flush with each other, as can be understood, the number of the mixing blades 422 is four, and the four mixing blades 422 are arranged around the periphery of the rotating shaft 421.

The supporting parts 50 are arranged at the bottom end of the casing 10, the number of the supporting parts 50 is three, and the three supporting parts 50 are uniformly arranged around the periphery of the casing 10.

A first threshold value and a second threshold value are arranged in the controller, the first threshold value is that when the materials are completely mixed, the numerical values of the concentration, the temperature and the like of the materials reach the optimal values, the second threshold value is that when the materials are excessively mixed, the numerical values of the concentration, the temperature and the like of the materials reach critical values, the controller compares the numerical value of one of the concentration, the temperature and the like of the mixture of the materials sensed by the received sensor with the first threshold value and the second threshold value, and when the materials in the first mixed feeding cavity 211 reach the first threshold value, a user can drive the opening of the upper discharging port of the first mixing shell 21 to be opened through the opening of the first operating piece 231 and the second operating piece 233; when the material in the first mixing feeding cavity 211 reaches the second threshold value, the user can close the discharge hole of the first mixing housing 21 by the closing of the first and second manipulating

members

231 and 233.

In the present embodiment, the housing 10 is provided with a second mixing structure 19, and the second mixing structure 19 is used for fully mixing the emulsion in water and the liquid.

The second mixing structure 19 is disposed below the first mixing structure, the second mixing structure 19 includes a first mixing part 191, a second mixing part 192, and a third mixing part 193, and opposite ends of the first mixing part 191, the second mixing part 192, and the third mixing part 193 are fixedly connected to an inner surface of the housing.

The first mixing part 191, the second mixing part 192, and the third mixing part 193 are sequentially disposed from top to bottom in the axial direction of the housing. In order to improve the mixing effect of the emulsion in water and the liquid and improve the mixing efficiency of the emulsion in water and the liquid, a first mixing hole 1911 is formed in the first mixing piece 191, a second mixing hole 1921 is formed in the second mixing piece 192, a third mixing hole 1931 is formed in the third mixing piece 193, the aperture of the first mixing hole 1911 is larger than that of the second mixing hole 1921, and the aperture of the second mixing hole 1921 is larger than that of the third mixing hole 1931.

It can be understood that the second mixing structure 19 has multiple layers of mixing parts, that is, the first mixing part 191, the second mixing part 192 and the third mixing part 193 of the second mixing structure 19 can improve the mixing effect of the emulsion in water and the liquid, improve the mixing time of the emulsion in water and the liquid, and improve the mixing efficiency of the emulsion in water and the liquid.

The working principle is as follows: the first mixing device 20 is arranged at the top of the inner cavity of the housing 10, so that a premixing effect is achieved, the number of the mixing strip groups is multiple, the mixing strip groups are sequentially arranged from top to bottom along the axial direction of the pivot, each mixing strip group comprises multiple mixing strips 2222, the multiple mixing strips 2222 surround the periphery of the pivot, each mixing strip 2222 is provided with multiple mixing protrusions 2223, each mixing protrusion 2223 is in a V shape, the pointed top of each mixing protrusion 2223 is gradually narrowed towards the direction far away from the mixing strip 2222, each mixing strip 2222 is in an S shape, the width of each mixing strip 2222 is gradually increased along the direction far away from the pivot 2221, therefore, the contact area between the mixing strip 2222 and the material is increased from the transverse direction, the contact area between the mixing strip 2222 and the material is also increased from the longitudinal direction, and the mixing efficiency is high; meanwhile, a sensor is arranged in the inner cavity of the first mixing shell and used for sensing the numerical value of one of the concentration, the temperature and the like of the mixed materials in the inner cavity of the first mixing shell, and when the numerical value of the concentration, the temperature and the like of the mixed materials meets the working condition requirement, the mixed materials enter the inner cavity of the body through a pre-mixing discharge hole; the operation component 23 is disposed at one side of the first mixing housing 21, and the operation component 23 is configured to drive the opening and closing of the material outlet of the first mixing housing 21 through the opening and closing of the first operation piece 231 and the second operation piece 233; set up second mixing arrangement 40 in the casing 10 inner chamber, can further the misce bene, because a plurality of mixing blade 422 set up on axis of rotation 421, a plurality of mixing blade 422 evenly set up around the circumference of axis of rotation 421, be equipped with on each mixing blade 422 with the heating member 423 that the controller is connected, work as the material with when heating member 423 contacts, when the material is mixed by a plurality of mixing blade 422, heating member 423 can be right the material heats, and then impels water emulsion and liquid mixing, and a plurality of mixing blade 422's the equal parallel and level each other of top surface, the equal parallel and level each other of bottom surface of a plurality of mixing blade 421 makes the material mix more evenly.

The above examples only express embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a mixed material device for processing of emulsion in water pesticide which characterized in that: the device comprises a shell, a first mixing device, a second mixing device and a controller, wherein the first mixing device is positioned at the top of an inner cavity of the shell, the second mixing device is accommodated in the inner cavity of the shell, the first mixing device comprises a first mixing shell, a first premixing component and an operation component, an inner cavity of the first mixing shell forms a first mixed feeding cavity, a discharge port is formed in one side of the first mixing shell, a fixed part is arranged on one side wall of the discharge port, a telescopic part is arranged on the other side wall of the discharge port, the first premixing component is partially accommodated in the first mixed feeding cavity, the first premixing component comprises a motor, a first mixing structure and a sensor, the motor is arranged at the top of the shell, and the first mixing structure comprises a pivot and a mixing strip group arranged on the pivot, the pivot is connected with the bottom of the motor, the mixing strip group comprises a plurality of mixing strips, the mixing strips are arranged around the periphery of the pivot, a plurality of mixing protrusions are arranged on each mixing strip, each mixing protrusion is in a V shape, the sharp top of each mixing protrusion gradually narrows towards the direction far away from the mixing strips, the sensor is arranged in the inner cavity of the first mixing shell and is electrically connected with the controller, the operating component is arranged on one side of the first mixing shell and comprises a first operating rod, a rotating part and a second operating part, the first operating rod is arranged on the top of the first mixing shell and is connected with the fixed part, the second operating part is connected with the first operating rod through the rotating part, and the second operating part is arranged in a staggered mode with the first operating rod, the bottom of the second operating piece is connected with the telescopic part, the second mixing device comprises a fixed connecting part, a second mixing body and a driving part, the fixed connecting part is provided with an installation opening, the driving part is installed in the installation opening, the second mixing body comprises a rotating shaft and mixing blades, one end of the rotating shaft is connected with the bottom of the driving part, the mixing blade is arranged on the rotating shaft, the number of the mixing blades is multiple, the mixing blades are uniformly arranged around the circumference of the rotating shaft, each mixing blade is provided with a heating element connected with the controller, the heating member is used for heating materials, locate second mixed structure in the casing, second mixed structure is used for making emulsion in water and liquid intensive mixing, second mixed structure's the position of setting is located first mixed structure's below.

2. The mixing material device for processing the water emulsion pesticide as claimed in claim 1, characterized in that: the second mixed structure includes first mixed piece, second mixed piece and third mixed piece, first mixed piece the second mixed piece and the third mixed piece relative both ends all with the internal surface fixed connection of casing, first mixed piece the second mixed piece and the third mixed piece is followed the axial of casing is from last to setting gradually down, first mixed hole has been seted up on the first mixed piece, second mixed hole has been seted up on the second mixed piece, third mixed hole has been seted up on the third mixed piece, the aperture in first mixed hole is greater than the aperture in second mixed hole, the aperture in second mixed hole is greater than the aperture in third mixed hole.

3. The mixing material device for processing the water emulsion pesticide as claimed in claim 2, characterized in that: the first mixing structure further comprises vertebral bodies arranged between the adjacent two mixing strips, the mixed material device for processing the emulsion in water pesticide further comprises a protection piece and a supporting part, the protection piece is arranged on the outer side of the shell, a temperature control cavity is formed in an inner cavity between the protection piece and the shell, the supporting part is arranged at the bottom end of the shell, the supporting parts are three in number and three in number, and the supporting parts are uniformly arranged around the periphery of the shell.

4. The mixing material device for processing the water emulsion pesticide as claimed in claim 3, characterized in that: the feed port is formed in the top of the shell and communicated with the first mixed feed cavity, the discharge hole is formed in the bottom of the shell, an air inlet hole communicated with the outside and the inner cavity of the shell is formed in one side of the shell, an air outlet hole communicated with the outside and the inner cavity of the shell is formed in one side, away from the air inlet hole, of the shell, and the air inlet hole and the air outlet hole are located above the side portion of the shell.

5. The mixing material device for processing the emulsion in water pesticide as claimed in claim 4, characterized in that: mix the strip group set up quantity be a plurality of, a plurality of mix the strip group and follow the axial of pivot sets gradually from last to down, each mix the strip and be the S form.

6. The mixing material device for processing the water emulsion pesticide as claimed in claim 5, characterized in that: the mixed strip group is arranged in four, and the mixed strip group is arranged along the axial direction of the pivot shaft from top to bottom in sequence.

7. The mixing material device for processing the emulsion in water pesticide as claimed in claim 6, characterized in that: each the surface of mixing the strip is provided with the heat dissipation layer, a plurality of circular ports have been seted up on the heat dissipation layer.

8. The mixing material device for processing the water emulsion pesticide as claimed in claim 7, characterized in that: the diameter of the circular holes is 0.3-0.5 mm.

9. The mixing material device for processing the water emulsion pesticide as claimed in claim 8, characterized in that: the apex angle of the V-shape of each mixing protrusion is 10-40 degrees.

10. The mixing material device for processing the emulsion in water pesticide as claimed in claim 9, characterized in that: the surface of the shell is provided with an aluminum alloy coating, and the thickness of the aluminum alloy coating is 0.3-0.8 mm.