Aluminum strip pretreatment equipment

Abstract

The utility model belongs to the technical field of aluminum strip pretreatment, and particularly relates to aluminum strip pretreatment equipment. The utility model aims to solve the problem of long time consumption of aluminum strip pretreatment in the prior art. The aluminum strip pretreatment equipment comprises at least two spraying devices, and each spraying device comprises a treatment box, an upper spraying assembly, a lower spraying assembly, a liquid storage device, a liquid conveying assembly and a conveying pump; the at least two spraying devices are sequentially arranged in the set direction, and the output port of one of every two adjacent spraying devices corresponds to the input port of the other spraying device. The treatment liquid is sprayed on the surface of the aluminum strip through the at least two spraying devices so as to clean the surface of the aluminum strip, only a short reaction process is needed after the treatment liquid is sprayed on the surface of the aluminum strip, and the duration needed by pretreatment of the aluminum strip is shortened. In addition, the treatment liquid sprayed to the surface of the aluminum strip has certain impact force and high flowability, and therefore the pretreatment effect on the surface of the aluminum strip can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of aluminum strip pretreatment, and particularly to an aluminum strip pretreatment device. Background Art

[0002] Before the pre-roll coating process of the aluminum strip, a series of pretreatment is required for the aluminum strip to improve the surface characteristics of the aluminum strip and enhance the adhesion, uniformity and durability of the subsequent coating.

[0003] In the related art, the aluminum strip is often pretreated by dipping. The aluminum strip is dipped in the pretreatment liquid for a certain time to degrease. Since the treatment liquid takes a certain time to thoroughly clean the surface of the aluminum strip, the aluminum strip needs to be dipped for a longer time, resulting in a long pretreatment time and low efficiency of the aluminum strip. Summary of the Utility Model

[0004] In view of this, the main purpose of the embodiments of the present application is to provide an aluminum strip pretreatment device to solve the technical problem of long pretreatment time of the aluminum strip in the related art.

[0005] To achieve the above object, the embodiments of the present application provide an aluminum strip pretreatment device, including at least two spraying devices. The spraying device includes a treatment tank, an upper spraying assembly, a lower spraying assembly, a liquid storage device, a liquid delivery assembly and a delivery pump;

[0006] A treatment chamber is defined in the treatment tank. The upper spraying assembly and the lower spraying assembly are respectively arranged in the treatment chamber. The spraying direction of the upper spraying assembly is downward, the lower spraying assembly is located below the upper spraying assembly, the spraying direction of the lower spraying assembly is upward, and a conveying channel extending along a set direction is formed between the upper spraying assembly and the lower spraying assembly;

[0007] The treatment tank is configured with an input port and an output port which are oppositely arranged. The input port and the output port are respectively communicated with the conveying channel;

[0008] A liquid storage chamber is defined in the liquid storage device. The liquid storage chamber is used for accommodating the spraying liquid. The treatment chamber is communicated with the liquid storage chamber; the liquid storage chamber is respectively communicated with the upper spraying assembly and the lower spraying assembly through the liquid delivery assembly, and the delivery pump is arranged on the liquid delivery assembly;

[0009] The at least two spraying devices are arranged in sequence along the set direction, and the output port of one of the adjacent two spraying devices is correspondingly arranged with the input port of the other.

[0010] In some embodiments that may include the above embodiments, the at least two spray devices include an alkaline washing spray device, a first water washing spray device, a pickling spray device, a second water washing spray device and a rinsing spray device arranged in sequence along the set direction.

[0011] In some embodiments that may include the above embodiments, the aluminum strip pre-treatment equipment further includes a scraping roller group, the scraping roller group is arranged in the treatment chamber, the scraping roller group includes a scraping upper roller body and a scraping lower roller body, the scraping upper roller body is arranged at the front end of the upper spray assembly, and the scraping lower roller body is arranged at the front end of the lower spray assembly;

[0012] The axis of the scraping upper roller is arranged horizontally and perpendicular to the set direction, and the scraping upper roller is used to contact the upper surface of the aluminum strip;

[0013] The axis of the scraping lower roller is arranged parallel to the axis of the scraping upper roller, and the scraping lower roller is used to contact the lower surface of the aluminum strip;

[0014] The scraping upper roller and the scraping lower roller are arranged alternately along the set direction, and the scraping upper roller and the scraping lower roller are used to scrape the aluminum strip away from the traveling direction of the aluminum strip.

[0015] In some embodiments that may include the above embodiments, the aluminum strip pre-treatment device further includes a squeeze roller group, the squeeze roller group is arranged in the treatment chamber, the squeeze roller group includes a squeeze upper roller body and a squeeze lower roller body that are arranged oppositely and in contact with each other, the squeeze upper roller body is arranged at the front end of the upper spray assembly, and the squeeze lower roller body is arranged at the front end of the lower spray assembly;

[0016] The axis of the squeeze upper roller is arranged horizontally and perpendicular to the set direction, and the squeeze upper roller is used to contact the upper surface of the aluminum strip;

[0017] The axis of the squeeze lower roller is arranged parallel to the axis of the squeeze upper roller, and the squeeze lower roller is used to contact the lower surface of the aluminum strip;

[0018] The squeeze-out upper roller and the squeeze-out lower roller are used to scrape the aluminum strip away from the traveling direction of the aluminum strip.

[0019] In some embodiments that may include the above-mentioned embodiments, the alkali washing spray device, the acid washing spray device and the second water washing spray device are all provided with the scraping roller group.

[0020] In some embodiments that may include the above embodiments, the alkali washing spray device, the first water washing spray device, the acid washing spray device and the rinsing spray device are all provided with the squeeze roller group;

[0021] In the alkali washing spray device and the acid washing spray device, the squeezing upper roller body is arranged at the front end of the scraping upper roller body, and the squeezing lower roller body is arranged at the front end of the scraping lower roller body.

[0022] In some embodiments that may include the above embodiments, the alkali washing spray device and the acid washing spray device further include exhaust members respectively. An exhaust cavity is provided in each exhaust member. The exhaust member has an air inlet and an air outlet, and both the air inlet and the air outlet communicate with the exhaust cavity. The exhaust member is connected to the top of the processing tank, and the air inlet communicates with the processing cavity.

[0023] In some embodiments that may include the above embodiments, the alkali washing spray device includes an alkali washing exhaust member. The alkali washing exhaust member includes a first exhaust pipe and a second exhaust pipe that are connected and communicate with each other. The first exhaust pipe communicates with the processing cavity.

[0024] The acid washing spray device includes an acid washing exhaust member. The acid washing exhaust member includes a third exhaust pipe and a fourth exhaust pipe that are connected and communicate with each other. The third exhaust pipe communicates with the processing cavity, and one end of the fourth exhaust pipe facing away from the third exhaust pipe communicates with the second exhaust pipe.

[0025] In some embodiments that may include the above embodiments, the upper spray assembly and the lower spray assembly respectively include a plurality of nozzles arranged at intervals in sequence along the extending direction of the conveying channel. The nozzles communicate with the liquid conveying assembly. The spraying angle of the nozzles is 40° - 60°, and the spraying coverage ranges of two adjacent nozzles on the conveying channel intersect with each other.

[0026] In some embodiments that may include the above embodiments, the scraping roller set further includes a support and a driving mechanism.

[0027] The support is arranged in the processing tank. The scraping upper roller body and the scraping lower roller body are respectively slidably arranged on the support. The sliding directions of the scraping upper roller body and the scraping lower roller body are both perpendicular to the set direction.

[0028] The driving mechanism is respectively connected to the scraping upper roller body and the scraping lower roller body, and respectively drives the scraping upper roller body and the scraping lower roller body to slide relative to the support.

[0029] The aluminum strip pretreatment equipment provided by the embodiments of the present application includes at least two spraying devices. The spraying device includes a treatment tank, an upper spraying assembly, a lower spraying assembly, a liquid storage tank, a liquid conveying assembly and a conveying pump; a treatment cavity is defined in the treatment tank, the upper spraying assembly and the lower spraying assembly are respectively arranged in the treatment cavity, the spraying direction of the upper spraying assembly is downward, the lower spraying assembly is located below the upper spraying assembly, the spraying direction of the lower spraying assembly is upward, and a conveying channel extending along a set direction is formed between the upper spraying assembly and the lower spraying assembly; the treatment tank is configured with an input port and an output port arranged oppositely, and the input port and the output port are respectively communicated with the conveying channel; a liquid storage cavity is defined in the liquid storage tank, and the liquid storage cavity is used for accommodating the spraying liquid, and the treatment cavity is communicated with the liquid storage cavity; the liquid storage cavity is respectively communicated with the upper spraying assembly and the lower spraying assembly through the liquid conveying assembly, and the conveying pump is arranged on the liquid conveying assembly; at least two spraying devices are arranged in sequence along the set direction, and the output port of one of the adjacent two spraying devices is correspondingly arranged with the input port of the other. The treatment liquid is sprayed on the surface of the aluminum strip through at least two spraying devices to clean the surface of the aluminum strip. After the treatment liquid is sprayed on the surface of the aluminum strip, only a short reaction process is required, shortening the time required for the pretreatment of the aluminum strip. Moreover, the treatment liquid sprayed on the surface of the aluminum strip has a certain impact force and strong fluidity, so the pretreatment effect on the surface of the aluminum strip can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 Structural schematic diagram of the aluminum strip pretreatment equipment provided by the embodiments of the present application;

[0032] Figure 2 Structural schematic diagram of the spraying device in the aluminum strip pretreatment equipment provided by the embodiments of the present application;

[0033] Figure 3 Structural schematic diagram of the alkali washing spraying device in the aluminum strip pretreatment equipment provided by the embodiments of the present application;

[0034] Figure 4 Structural schematic diagram of the first water washing spraying device in the aluminum strip pretreatment equipment provided by the embodiments of the present application;

[0035] Figure 5 Structural schematic diagram of the pickling spraying device in the aluminum strip pretreatment equipment provided by the embodiments of the present application;

[0036] Figure 6Schematic diagram of the structure of the second water washing and spraying device in the aluminum strip pretreatment equipment provided by the embodiment of the present application;

[0037] Figure 7 Schematic diagram of the structure of the rinsing and spraying device in the aluminum strip pretreatment equipment provided by the embodiment of the present application.

[0038] Explanation of reference numerals:

[0039] 10. Alkaline washing spraying device; 101. Alkaline washing exhaust part; 102. First exhaust pipe; 103. Second exhaust pipe;

[0040] 20. First water washing spraying device;

[0041] 30. Acid pickling spraying device; 301. Acid pickling exhaust part; 302. Third exhaust pipe; 303. Fourth exhaust pipe;

[0042] 40. Second water washing spraying device; 401. Second scraping roller group; 402. Fourth upper roller body; 403. Fourth lower roller body;

[0043] 50. Rinsing spraying device;

[0044] 110. Processing tank; 111. Processing chamber; 112. Conveying channel; 113. Input port; 114. Output port; 115. Diversion inclined plane;

[0045] 120. Upper spraying assembly; 121. First upper spraying assembly; 122. Second upper spraying assembly; 123. Nozzle;

[0046] 130. Lower spraying assembly; 131. First lower spraying assembly; 132. Second lower spraying assembly;

[0047] 140. Liquid storage device; 141. Liquid storage chamber; 142. First side wall; 143. Second side wall;

[0048] 150. Liquid infusion assembly; 151. Main liquid infusion pipe; 152. First main pipe; 153. Second main pipe; 154. Three-way valve; 155. First branch pipe; 156. Second branch pipe;

[0049] 160. Delivery pump;

[0050] 170. First scraping roller group; 171. First upper roller body; 172. First lower roller body; 173. Support; 174. Driving mechanism;

[0051] 180. First squeezing roller group; 181. Second upper roller body; 182. Second lower roller body;

[0052] 190. Second squeezing roller group; 191. Third upper roller body; 192. Third lower roller body. Detailed implementation manners

[0053] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principle of this application and are not intended to limit the protection scope of this application. Those skilled in the art can adjust them as needed to adapt to specific application scenarios.

[0054] Secondly, it should be noted that in the description of the embodiments of this application, terms indicating directions or positional relationships such as "inner" and "outer" are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to this application.

[0055] In addition, it should also be noted that in the description of the embodiments of this application, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific situations.

[0056] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0057] As described in the background art, there is a problem of long time consumption in the pre-treatment process of the aluminum strip in the related art. After research by the applicant, it is found that the reason for this problem is that in the related art, the aluminum strip is pre-treated by dipping, and the aluminum strip needs to be dipped in the pre-treatment liquid for a long time to thoroughly clean the surface of the aluminum strip, resulting in a long pre-treatment time of the aluminum strip and low efficiency of the aluminum strip pre-treatment.

[0058] To solve the above technical problems, the embodiments of this application provide an aluminum strip pre-treatment device, which sprays the treatment liquid on the surface of the aluminum strip through at least two spraying devices to clean the surface of the aluminum strip. After the treatment liquid is sprayed on the surface of the aluminum strip, only a short reaction process is required, shortening the time required for the pre-treatment of the aluminum strip. Moreover, the treatment liquid sprayed on the surface of the aluminum strip has a certain impact force and strong fluidity, so the pre-treatment effect on the surface of the aluminum strip can be improved.

[0059] The principles and features of the embodiments of the present application will be described below with reference to the accompanying drawings. The examples given are only for explaining the embodiments of the present application and are not intended to limit the scope of the embodiments of the present application.

[0060] Reference Figure 1 , the embodiments of the present application provide an aluminum strip pretreatment device, including at least two spraying devices (10, 20, 30, 40 and 50).

[0061] Reference Figure 2 , the spraying device includes a treatment tank 110, an upper spraying assembly 120, a lower spraying assembly 130, a liquid storage tank 140, an infusion assembly 150 and a delivery pump 160.

[0062] Reference Figure 2 , a treatment chamber 111 is defined in the treatment tank 110. The upper spraying assembly 120 and the lower spraying assembly 130 are respectively arranged in the treatment chamber 111. The spraying direction of the upper spraying assembly 120 is downward, the lower spraying assembly 130 is located below the upper spraying assembly 120, and the spraying direction of the lower spraying assembly 130 is upward.

[0063] Reference Figure 3 , a conveying channel 112 extending along a set direction X is formed between the upper spraying assembly 120 and the lower spraying assembly 130.

[0064] Reference Figure 2 , the upper spraying assembly 120 (and / or the lower spraying assembly 130) may include a plurality of nozzles 123 communicating with the infusion assembly 150. The plurality of nozzles 123 may be arranged at intervals in sequence along the extending direction of the conveying channel 112. The spray coverage angle α of the nozzles 123 may be 40° - 60°, and the spray coverage ranges of two adjacent nozzles 123 on the aluminum strip intersect with each other. For example Figure 2 there is an overlapping part L in the spray areas of two adjacent nozzles 123 on the aluminum strip in , so that the spraying liquid sprayed by the upper spraying assembly 120 (and / or the lower spraying assembly 130) can fully cover the surface of the aluminum strip, thereby improving the spraying effect on the aluminum strip. The interval between the upper spraying assembly 120 and the lower spraying assembly 130 may be 30 cm - 50 cm to facilitate the aluminum strip to pass between the upper spraying assembly 120 and the lower spraying assembly 130.

[0065] Reference Figure 3 , the treatment tank 110 is configured with an input port 113 and an output port 114 which are oppositely arranged. The input port 113 and the output port 114 are respectively communicated with the conveying channel 112.

[0066] Reference Figure 2, a liquid storage chamber 141 is defined within the liquid storage device 140, and the liquid storage chamber 141 is used to hold the spraying liquid. The spraying liquid can be an alkaline solution, an acidic solution, clear water, etc. The processing chamber 111 is in communication with the liquid storage chamber 141, and the spraying liquid in the processing chamber 111 can flow into the liquid storage chamber 141.

[0067] The liquid storage chamber 141 is respectively in communication with the upper spraying assembly 120 and the lower spraying assembly 130 through a liquid delivery assembly 150.

[0068] Reference Figure 2 , in some embodiments, the liquid delivery assembly 150 may include a main liquid delivery pipe 151, a three-way valve 154, a first branch pipe 155, and a second branch pipe 156. One end of the main liquid delivery pipe 151 is connected to the liquid storage device 140, and the inner cavity of the main liquid delivery pipe 151 is in communication with the liquid storage chamber 141. The end of the main liquid delivery pipe 151 facing away from the liquid storage device 140 may be connected to the inlet of the three-way valve 154. One ends of the first branch pipe 155 and the second branch pipe 156 are respectively in communication with two outlets of the three-way passage. The end of the first branch pipe 155 facing away from the three-way valve 154 may be in communication with the upper spraying assembly 120, and the end of the second branch pipe 156 facing away from the three-way valve 154 may be in communication with the lower spraying assembly 130.

[0069] A delivery pump 160 is disposed in the liquid delivery assembly 150. Reference Figure 2 , the main liquid delivery pipe 151 may include a first main pipe 152 and a second main pipe 153. One end of the first main pipe 152 is connected to the liquid storage device 140 and is in communication with the liquid storage chamber 141. The end of the first main pipe 152 facing away from the liquid storage device 140 may be connected to the inlet of the delivery pump 160. The outlet of the delivery pump 160 is connected to one end of the second main pipe 153, and the end of the second main pipe 153 facing away from the delivery pump 160 is connected to the inlet of the three-way valve 154.

[0070] When the delivery pump 160 operates, the spraying liquid in the liquid storage chamber 141 sequentially passes through the first main pipe 152, the delivery pump 160, the second main pipe 153, and then respectively flows to the upper spraying assembly 120 through the first branch pipe 155 and to the lower spraying assembly 130 through the second branch pipe 156.

[0071] The spraying liquid in the processing chamber 111 flows into the liquid storage chamber 141. Under the action of the delivery pump 160, the spraying liquid circulates between the liquid storage chamber 141, the upper spraying assembly 120, and the lower spraying assembly 130.

[0072] In some embodiments, the liquid storage device 140 may have a first side wall 142 and a second side wall 143 disposed opposite to each other. The first main pipe 152 (or the main liquid delivery pipe 151) may be connected to the first side wall 142, and the first main pipe 152 may be close to the bottom of the liquid storage device 140.

[0073] The bottom of the liquid storage cavity 141 may have a diversion inclined surface 115, which extends obliquely downward from the second side wall 143 to the first side wall 142, that is, the height of one end of the diversion inclined surface 115 close to the second side wall 143 is higher than the height of the end close to the first side wall 142. In this way, when the amount of the spraying liquid in the liquid storage cavity 141 is small, the spraying liquid can be accumulated at one end close to the first side wall 142 along the inclined diversion inclined surface 115, which is convenient for the spraying liquid to be output from the first main pipe 152 (or the main liquid delivery pipe 151).

[0074] Reference Figure 3 When the pretreatment of the aluminum strip is required, the aluminum strip is horizontally inserted into the conveying channel 112 from the input port 113, and the aluminum strip is moved (forward) from the input port 113 to the output port 114 along the set direction X. During the forward movement of the aluminum strip, the upper spraying assembly 120 sprays the upper surface of the aluminum strip, and the lower spraying assembly 130 sprays the lower surface of the aluminum strip. After the treatment liquid is sprayed on the upper and lower surfaces of the aluminum strip, only a short reaction process is required, shortening the time required for the pretreatment of the aluminum strip. Moreover, the treatment liquid sprayed on the surface of the aluminum strip has a certain impact force and strong fluidity, so the pretreatment effect on the surface of the aluminum strip can be improved.

[0075] Reference Figure 1 At least two spraying devices (10, 20, 30, 40 and 50) are arranged in sequence along the set direction X, and the output port 114 of one of the adjacent two spraying devices is correspondingly arranged with the input port 113 of the other. In this way, during the forward movement of the aluminum strip, the aluminum strip passes through each spraying device in sequence, and each spraying device respectively performs a corresponding pretreatment process on the aluminum strip, improving the pretreatment effect of the aluminum strip pretreatment equipment on the surface of the aluminum strip.

[0076] Reference Figures 1 - 7 At least two spraying devices may include an alkali washing spraying device 10, and the alkali washing spraying device 10 may include the above-mentioned treatment tank 110, upper spraying assembly 120, lower spraying assembly 130, liquid storage device 140, liquid delivery assembly 150 and delivery pump 160.

[0077] Among them, the spraying liquid contained in the liquid storage cavity 141 of the alkali washing spraying device 10 is an alkali solution, and the alkali washing spraying device 10 is used to spray the alkali solution on the surface of the aluminum strip.

[0078] After the aluminum strip is removed from the output port 114 of the alkali washing spraying device 10, a certain amount of alkali solution will remain on the surface of the aluminum strip.

[0079] At least two spraying devices may include a first water washing spraying device 20, and the first water washing spraying device 20 may include the above-mentioned treatment tank 110, upper spraying assembly 120, lower spraying assembly 130, liquid storage device 140, liquid infusion assembly 150 and delivery pump 160. The first water washing spraying device 20 may be arranged at the front end of the alkali washing spraying device 10 along the set direction X.

[0080] The spraying liquid contained in the liquid storage cavity 141 of the first water washing spraying device 20 is clean water, and the first water washing spraying device 20 is used to spray clean water on the surface of the aluminum strip to wash away the residual alkali liquid on the surface of the aluminum strip.

[0081] At least two spraying devices may include an acid washing spraying device 30, and the acid washing spraying device 30 may include the above-mentioned treatment tank 110, upper spraying assembly 120, lower spraying assembly 130, liquid storage device 140, liquid infusion assembly 150 and delivery pump 160. The acid washing spraying device 30 may be arranged at the front end of the first water washing spraying device 20 along the set direction X.

[0082] The spraying liquid contained in the liquid storage cavity 141 of the acid washing spraying device 30 is acid liquid, and the acid washing spraying device 30 is used to spray acid liquid on the surface of the aluminum strip.

[0083] After the aluminum strip is removed from the output port 114 of the acid washing spraying device 30, a certain amount of acid liquid will remain on the surface of the aluminum strip.

[0084] At least two spraying devices may include a second water washing spraying device 40, and the second water washing spraying device 40 may include the above-mentioned treatment tank 110, upper spraying assembly 120, lower spraying assembly 130, liquid storage device 140, liquid infusion assembly 150 and delivery pump 160. The second water washing spraying device 40 may be arranged at the front end of the acid washing spraying device 30 along the set direction X.

[0085] The spraying liquid contained in the liquid storage cavity 141 of the second water washing spraying device 40 is clean water, and the second water washing spraying device 40 is used to spray clean water on the surface of the aluminum strip to wash away the residual acid liquid on the surface of the aluminum strip.

[0086] At least two spraying devices may include a rinsing spraying device 50, and the rinsing spraying device 50 may include the above-mentioned treatment tank 110, upper spraying assembly 120, lower spraying assembly 130, liquid storage device 140, liquid infusion assembly 150 and delivery pump 160. The rinsing spraying device 50 may be arranged at the front end of the second water washing spraying device 40 along the set direction X.

[0087] The spraying liquid contained in the liquid storage cavity 141 of the rinsing spraying device 50 is clean water, and the rinsing spraying device 50 is used to spray clean water on the surface of the aluminum strip to further wash away the residual treatment liquid on the surface of the aluminum strip.

[0088] At least two spraying devices can be at least two of the alkali washing spraying device 10, the first water washing spraying device 20, the acid washing spraying device 30, the second water washing spraying device 40, and the rinsing spraying device 50.

[0089] In some possible implementation manners of the embodiments of the present application, with reference to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , at least two spraying devices can include the alkali washing spraying device 10, the first water washing spraying device 20, the acid washing spraying device 30, the second water washing spraying device 40, and the rinsing spraying device 50 arranged in sequence along the set direction X.

[0090] With reference to Figures 1 - 7 , the alkali washing spraying device 10, the first water washing spraying device 20, the acid washing spraying device 30, the second water washing spraying device 40, and the rinsing spraying device 50 all include the above-mentioned treatment tank 110, the upper spraying assembly 120, the lower spraying assembly 130, the liquid storage device 140, the liquid conveying assembly 150, and the delivery pump 160.

[0091] The aluminum strip pretreatment equipment may further include a scraping roll group, the scraping roll group is arranged in the treatment cavity 111, and the scraping roll group may include a scraping upper roll body and a scraping lower roll body arranged alternately along the set direction X.

[0092] In some possible implementation manners of the embodiments of the present application, with reference to Figure 3 and Figure 5 , the scraping roll group may include a first scraping roll group 170. The scraping upper roll body may include a first upper roll body 171, and the scraping lower roll body may include a first lower roll body 172. The alkali washing spraying device 10 and the acid washing spraying device 30 may respectively further include the first scraping roll group 170.

[0093] With reference to Figure 3 , the first scraping roll group 170 of the alkali washing spraying device 10 is arranged in the treatment cavity 111 of the alkali washing spraying device 10. The first scraping roll group 170 includes a first upper roll body 171 and a first lower roll body 172. The first upper roll body 171 is arranged at the front end of the upper spraying assembly 120 of the alkali washing spraying device 10, and the first lower roll body 172 is arranged at the front end of the lower spraying assembly 130 of the alkali washing spraying device 10.

[0094] The axis of the first upper roll body 171 is horizontally arranged and perpendicular to the set direction X. The first upper roll body 171 is used to contact the upper surface of the aluminum strip.

[0095] The axis of the first lower roll body 172 is arranged parallel to the axis of the first upper roll body 171. The first lower roll body 172 is used to contact the lower surface of the aluminum strip.

[0096] The first upper roller body 171 and the first lower roller body 172 are used to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip.

[0097] During the forward movement of the aluminum strip, when passing through the alkali washing spraying device 10, the upper spraying assembly 120 and the lower spraying assembly 130 spray alkali solution on the upper and lower surfaces of the aluminum strip respectively. When the aluminum strip after spraying the alkali solution moves forward to the first scraping roller group 170, the first upper roller body 171 rotates counterclockwise to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the upper surface of the aluminum strip that are difficult to be removed by the alkali solution. The first lower roller body 172 rotates clockwise to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the lower surface of the aluminum strip that are difficult to be removed.

[0098] Reference Figure 3 Furthermore, the scraping roller group may further include a support 173 and a driving mechanism 174.

[0099] The support 173 is arranged in the processing tank. The scraping upper roller body and the scraping lower roller body are respectively slidably arranged on the support 173, and the sliding directions of the scraping upper roller body and the scraping lower roller body are both perpendicular to the set direction X.

[0100] The driving mechanism 174 is respectively connected to the scraping upper roller body and the scraping lower roller body, and respectively drives the scraping upper roller body and the scraping lower roller body to slide relative to the support 173.

[0101] The driving mechanism 174 can be an electric push rod or a cylinder, etc.

[0102] The telescopic rod of the electric push rod or the cylinder can be connected to the scraping upper roller body or the scraping lower roller body, and the telescopic direction of the telescopic rod can be perpendicular to the set direction X.

[0103] By means of the driving mechanism 174, the positions of the scraping upper roller body and the scraping lower roller body in the vertical direction can be respectively adjusted to adjust the downward pressing amount of the scraping upper roller body and the scraping lower roller body relative to the aluminum strip according to the thickness of the aluminum strip, so that the aluminum strip pre-treatment equipment can be applicable to aluminum strips of various thicknesses, improving the versatility of the aluminum strip pre-treatment equipment.

[0104] Reference Figure 5 The first scraping roller group 170 of the pickling spraying device 30 is arranged in the processing chamber 111 of the pickling spraying device 30. The first scraping roller group 170 includes a first upper roller body 171 and a first lower roller body 172. The first upper roller body 171 is arranged at the front end of the upper spraying assembly 120 of the pickling spraying device 30, and the first lower roller body 172 is arranged at the front end of the lower spraying assembly 130 of the pickling spraying device 30.

[0105] The axis of the first upper roller body 171 is horizontally arranged and perpendicular to the set direction X, and the first upper roller body 171 is used to contact the upper surface of the aluminum strip.

[0106] The axis of the first lower roller body 172 is arranged parallel to the axis of the first upper roller body 171, and the first lower roller body 172 is used to contact the lower surface of the aluminum strip.

[0107] The first upper roller body 171 and the first lower roller body 172 are used to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip.

[0108] During the forward movement of the aluminum strip, when passing through the pickling spraying device 30, the upper spraying assembly 120 and the lower spraying assembly 130 respectively spray acid solution on the upper and lower surfaces of the aluminum strip. When the aluminum strip after spraying the acid solution moves forward to the first scraping roller group 170, the first upper roller body 171 rotates counterclockwise to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the upper surface of the aluminum strip that are difficult to be removed by the acid solution. The first lower roller body 172 rotates clockwise to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the lower surface of the aluminum strip that are difficult to be removed.

[0109] In some possible implementation manners of the embodiments of the present application, the first upper roller body 171 has a certain downward pressure on the upper surface of the aluminum strip to improve the scraping effect on the upper surface of the aluminum strip.

[0110] The first lower roller body 172 has a certain upward thrust on the lower surface of the aluminum strip to improve the scraping effect on the lower surface of the aluminum strip.

[0111] The first upper roller body 171 and the first lower roller body 172 can be arranged in an interleaved manner along the set direction X, that is, the first upper roller body 171 and the first lower roller body 172 are not in contact, so as to reduce the cancellation amount of the upward acting force of the first lower roller body 172 on the first upper roller body 171 on the downward pressure of the first upper roller body 171, and reduce the cancellation amount of the downward acting force of the first upper roller body 171 on the first lower roller body 172 on the upward thrust of the first lower roller body 172, thereby improving the scraping effect of the first upper roller body 171 and the first lower roller body 172 on the surface of the aluminum strip.

[0112] In some embodiments, the downward pressing amounts of the first upper roller body 171 and the first lower roller body 172 can be 2 cm - 3 cm respectively to improve the scraping effect of the first upper roller body 171 on the upper surface of the aluminum strip. The downward pressing amount refers to the vertical distance from the axis of the first upper roller body 171 (or the first lower roller body 172) to the surface of the aluminum strip when the first upper roller body 171 (or the first lower roller body 172) is pressed on the surface of the aluminum strip, and the difference from the outer diameter of the first upper roller body 171 (or the first lower roller body 172).

[0113] The roller brushes of the first upper roller body 171 and the first lower roller body 172 can be nylon brushes, and the nylon brushes are resistant to acid and alkali corrosion, so that the first upper roller body 171 and the first lower roller body 172 are more durable.

[0114] The aluminum strip pre-treatment device may further include a squeezing roller set, which is disposed in the treatment chamber 111. The squeezing roller set includes a squeezing upper roller body and a squeezing lower roller body that are opposite and in contact with each other.

[0115] In some possible implementation manners of the embodiments of the present application, referring to Figure 3 and Figure 5 , the squeezing roller set may include a first squeezing roller set 180. The squeezing upper roller body may include a second upper roller body 181, and the squeezing lower roller body may include a second lower roller body 182. The alkali washing spraying device 10 and the acid washing spraying device 30 may respectively further include a first squeezing roller set 180.

[0116] Referring to Figure 3 , the first squeezing roller set 180 of the alkali washing spraying device 10 is disposed in the treatment chamber 111 of the alkali washing spraying device 10. The first squeezing roller set 180 includes a second upper roller body 181 and a second lower roller body 182 that are opposite and in contact with each other. The second upper roller body 181 is disposed at the front end of the first upper roller body 171 of the alkali washing spraying device 10, and the second lower roller body 182 is disposed at the front end of the first lower roller body 172 of the alkali washing spraying device 10.

[0117] The axis of the second upper roller body 181 is horizontally disposed and perpendicular to the set direction X. The second upper roller body 181 is used to contact the upper surface of the aluminum strip.

[0118] The axis of the second lower roller body 182 is parallel to the axis of the second upper roller body 181. The second lower roller body 182 is used to contact the lower surface of the aluminum strip.

[0119] The second upper roller body 181 and the second lower roller body 182 are used to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip.

[0120] In the alkali washing spraying device 10, during the forward movement of the aluminum strip, after passing through the first scraping roller set 170, the second upper roller body 181 and the second lower roller body 182 in the first squeezing roller set 180 simultaneously scrape the upper surface and the lower surface of the aluminum strip to reduce the amount of alkali solution remaining on the upper surface and the lower surface of the aluminum strip, so as to reduce the amount of alkali solution washed off the aluminum strip in the first water washing spraying device 20, thereby reducing the amount of alkali solution mixed into the liquid storage chamber 141 of the first water washing spraying device 20.

[0121] In some embodiments, referring to Figure 3 , in the alkali washing spraying device 10, the upper spraying assembly 120 may include a first upper spraying assembly 121 and a second upper spraying assembly 122. The first upper spraying assembly 121 is disposed at the rear end of the first upper roller body 171, and the second upper spraying assembly 122 is disposed between the first upper roller body 171 and the second upper roller body 181.

[0122] The lower spraying assembly 130 includes a first lower spraying assembly 131 and a second lower spraying assembly 132. The first lower spraying assembly 131 is arranged at the rear end of the first lower roller 172, and the second lower spraying assembly 132 is arranged between the first lower roller 172 and the second lower roller 182.

[0123] During the forward movement of the aluminum strip, when passing through the alkali washing spraying device 10, the first upper spraying assembly 121 and the first lower spraying assembly 131 spray alkali solution on the upper and lower surfaces of the aluminum strip respectively. When the aluminum strip after spraying the alkali solution moves forward to the first scraping roller group 170, the first upper roller 171 rotates counterclockwise to scrape the aluminum strip in the direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the upper surface of the aluminum strip that are difficult to be removed by the alkali solution. The first lower roller 172 rotates clockwise to scrape the aluminum strip in the direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the lower surface of the aluminum strip that are difficult to be removed.

[0124] When the aluminum strip processed by the first scraping roller group 170 moves forward to between the second upper spraying assembly 122 and the second lower spraying assembly 132, the second upper spraying assembly 122 and the second lower spraying assembly 132 spray alkali solution on the upper and lower surfaces of the aluminum strip respectively, so as to perform alkali washing on the surface of the aluminum strip covered by the impurities scraped off by the first scraping roller group 170.

[0125] Then, when the aluminum strip continues to move forward to between the second upper roller 181 and the second lower roller 182, the second upper roller 181 and the second lower roller 182 in the first squeezing roller group 180 scrape the upper surface and the lower surface of the aluminum strip simultaneously, so as to reduce the residual alkali solution on the upper surface and the lower surface of the aluminum strip, so as to reduce the amount of alkali solution washed off the aluminum strip in the first water washing spraying device 20, thereby reducing the amount of alkali solution mixed into the liquid storage cavity 141 of the first water washing spraying device 20.

[0126] Reference Figure 5 As shown in

[0127] The axis of the second upper roller 181 is horizontally arranged and perpendicular to the set direction X, and the second upper roller 181 is used to contact the upper surface of the aluminum strip.

[0128] The axis of the second lower roller 182 is arranged parallel to the axis of the second upper roller 181, and the second lower roller 182 is used to contact the lower surface of the aluminum strip.

[0129] The second upper roller body 181 and the second lower roller body 182 are used to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip.

[0130] In the pickling spray device 30, during the forward movement of the aluminum strip, after passing through the first scraping roller group 170, the second upper roller body 181 and the second lower roller body 182 in the first squeezing roller group 180 simultaneously scrape the upper surface and the lower surface of the aluminum strip to reduce the acid solution remaining on the upper surface and the lower surface of the aluminum strip, so as to reduce the amount of acid solution washed off the aluminum strip in the second water washing and spraying device 40, thereby reducing the amount of acid solution mixed into the liquid storage cavity 141 of the second water washing and spraying device 40.

[0131] In some embodiments, referring to Figure 5 , in the pickling spray device 30, the upper spray assembly 120 may include a first upper spray assembly 121 and a second upper spray assembly 122. The first upper spray assembly 121 is arranged at the rear end of the first upper roller body 171, and the second upper spray assembly 122 is arranged between the first upper roller body 171 and the second upper roller body 181.

[0132] The lower spray assembly 130 includes a first lower spray assembly 131 and a second lower spray assembly 132. The first lower spray assembly 131 is arranged at the rear end of the first lower roller body 172, and the second lower spray assembly 132 is arranged between the first lower roller body 172 and the second lower roller body 182.

[0133] During the forward movement of the aluminum strip, when passing through the pickling spray device 30, the first upper spray assembly 121 and the first lower spray assembly 131 respectively spray acid solution on the upper and lower surfaces of the aluminum strip. When the aluminum strip after spraying acid solution moves forward to the first scraping roller group 170, the first upper roller body 171 rotates counterclockwise to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the upper surface of the aluminum strip that are difficult to be removed by acid solution. The first lower roller body 172 rotates clockwise to scrape the aluminum strip in a direction away from the advancing direction of the aluminum strip, so as to scrape off impurities such as aluminum ash on the lower surface of the aluminum strip that are difficult to be removed.

[0134] When the aluminum strip processed by the first scraping roller group 170 moves forward to between the second upper spray assembly 122 and the second lower spray assembly 132, the second upper spray assembly 122 and the second lower spray assembly 132 respectively spray acid solution on the upper and lower surfaces of the aluminum strip again to pickle the surface of the aluminum strip covered by the impurities scraped off by the first scraping roller group 170.

[0135] Then, when the aluminum strip continues to move forward between the second upper roller body 181 and the second lower roller body 182, the second upper roller body 181 and the second lower roller body 182 in the first squeezing roller group 180 simultaneously scrape the upper surface and the lower surface of the aluminum strip to reduce the acid liquid remaining on the upper surface and the lower surface of the aluminum strip, so as to reduce the amount of acid liquid washed off the aluminum strip in the second water washing and spraying device 40, thereby reducing the amount of acid liquid mixed into the liquid storage cavity 141 of the second water washing and spraying device 40.

[0136] In some embodiments, the surfaces of the second upper roller body 181 and the second lower roller body 182 may be coated with nitrile rubber, and nitrile rubber is not easily corroded by acids and alkalis, making the second upper roller body 181 and the second lower roller body 182 more durable.

[0137] The hardness of the nitrile rubber can be 55HS - 60HS, which can improve the cleaning effect of the second upper roller body 181 and the second lower roller body 182 on the spraying liquid on the surface of the aluminum strip.

[0138] In some possible implementation manners of the embodiments of the present application, refer to Figure 1 、 Figure 3 and Figure 5 , the alkali washing and spraying device 10 and the acid washing and spraying device 30 may each further include an exhaust member. The exhaust member has an exhaust cavity, and the exhaust member has an air inlet and an air outlet, and both the air inlet and the air outlet are communicated with the exhaust cavity. The exhaust member is connected to the top of the processing box 110, and the air inlet of the exhaust member is communicated with the processing cavity 111. The exhaust member is used to discharge the waste gas and the like in the processing cavity 111 to the outside of the processing cavity 111.

[0139] Refer to Figure 1 and Figure 3 , the alkali washing and spraying device 10 may include an alkali washing exhaust member 101. The alkali washing exhaust member 101 includes a first exhaust pipe 102 and a second exhaust pipe 103 that are communicated with each other. One end of the first exhaust pipe 102 is communicated with the processing cavity 111, and the end of the first exhaust pipe 102 facing away from the processing box 110 is communicated with one end of the second exhaust pipe 103. In the spraying cavity of the alkali washing and spraying device 10, the alkali mist generated due to the spraying of the alkali liquid can be discharged through the first exhaust pipe 102 and the second exhaust pipe 103, so as to facilitate the adsorption treatment of the alkali mist.

[0140] Refer to Figure 1 and Figure 5 , the acid washing and spraying device 30 may include an acid washing exhaust member 301. The acid washing exhaust member 301 includes a third exhaust pipe 302 and a fourth exhaust pipe 303 that are communicated with each other. The third exhaust pipe 302 is communicated with the processing cavity 111. In the spraying cavity of the acid washing and spraying device 30, the acid mist generated due to the spraying of the acid liquid can be discharged through the third exhaust pipe 302 and the fourth exhaust pipe 303, so as to facilitate the adsorption treatment of the acid mist.

[0141] Refer toFigure 1 One end of the fourth exhaust pipe 303 facing away from the third exhaust pipe 302 communicates with one end of the second exhaust pipe 103 facing away from the first exhaust pipe 102. In this way, the exhaust gas from the alkali washing spray device 10 and the exhaust gas from the acid washing spray device 30 can be concentrated in the fourth exhaust pipe 303 for discharge, reducing the total length of the pipes required in the aluminum strip pretreatment equipment.

[0142] In some possible implementation manners of the embodiments of the present application, with reference to Figure 4 and Figure 7 , the squeezing roller group may include a second squeezing roller group 190. The upper squeezing roller body may include a third upper roller body 191, and the lower squeezing roller body may include a third lower roller body 192. The first water washing spray device 20 and the rinsing spray device 50 may respectively further include a second squeezing roller group 190.

[0143] With reference to Figure 4 , the second squeezing roller group 190 of the first water washing spray device 20 is disposed in the processing chamber 111 of the first water washing spray device 20. The second squeezing roller group 190 includes a third upper roller body 191 and a third lower roller body 192 that are disposed opposite to and in contact with each other. The third upper roller body 191 is disposed at the front end of the upper spray assembly 120 of the first water washing spray device 20, and the third lower roller body 192 is disposed at the front end of the lower spray assembly 130 of the first water washing spray device 20.

[0144] The axis of the third upper roller body 191 is horizontally disposed and perpendicular to the set direction X. The third upper roller body 191 is used to contact the upper surface of the aluminum strip.

[0145] The axis of the third lower roller body 192 is parallel to the axis of the third upper roller body 191. The third lower roller body 192 is used to contact the lower surface of the aluminum strip.

[0146] The third upper roller body 191 and the third lower roller body 192 are used to scrape the aluminum strip in a direction away from the traveling direction of the aluminum strip to scrape off the moisture on the upper and lower surfaces of the aluminum strip.

[0147] With reference to Figure 7 , the second squeezing roller group 190 of the rinsing spray device 50 is disposed in the processing chamber 111 of the rinsing spray device 50. The second squeezing roller group 190 includes a third upper roller body 191 and a third lower roller body 192 that are disposed opposite to and in contact with each other. The third upper roller body 191 is disposed at the front end of the upper spray assembly 120 of the rinsing spray device 50, and the third lower roller body 192 is disposed at the front end of the lower spray assembly 130 of the rinsing spray device 50.

[0148] The axis of the third upper roller body 191 is horizontally disposed and perpendicular to the set direction X. The third upper roller body 191 is used to contact the upper surface of the aluminum strip.

[0149] The axis of the third lower roller body 192 is arranged parallel to the axis of the third upper roller body 191 , and the third lower roller body 192 is used to contact with the lower surface of the aluminum strip.

[0150] The third upper roller 191 and the third lower roller 192 are used to scrape the aluminum strip in a direction away from the traveling direction of the aluminum strip, so as to scrape off moisture on the upper and lower surfaces of the aluminum strip.

[0151] In some embodiments, reference Figure 7 The rinsing spray device 50 may be provided with a plurality of second squeezing roller groups 190 to improve the effect of removing moisture from the surface of the aluminum strip and reduce the moisture remaining on the surface of the aluminum strip after the aluminum strip pre-treatment equipment pre-treats the aluminum strip.

[0152] In some possible implementations of the present application, reference is made to Figure 6 , the scraping roller group may include a second scraping roller group 401. The scraping upper roller body may include a fourth upper roller body 402, and the scraping lower roller body may include a fourth lower roller body 403. The second water washing spray device 40 may also include a second scraping roller group 401, the second scraping roller group 401 is arranged in the processing chamber 111 of the second water washing spray device 40, the second scraping roller group 401 includes a fourth upper roller body 402 and a fourth lower roller body 403, the fourth upper roller body 402 is arranged at the front end of the upper spray assembly 120 of the second water washing spray device 40, the fourth lower roller body 403 is arranged at the front end of the lower spray assembly 130 of the second water washing spray device 40, and the fourth upper roller body 402 and the fourth lower roller body 403 are staggered along the set direction X.

[0153] The axis of the fourth upper roller body 402 is horizontally arranged and perpendicular to the set direction X. The fourth upper roller body 402 is used to contact with the upper surface of the aluminum strip.

[0154] The axis of the fourth lower roller body 403 is arranged parallel to the axis of the fourth upper roller body 402 , and the fourth lower roller body 403 is used to contact with the lower surface of the aluminum strip.

[0155] The fourth upper roller body 402 and the fourth lower roller body 403 are used to scrape the aluminum strip in a direction away from the traveling direction of the aluminum strip to reduce the amount of water remaining on the upper and lower surfaces of the aluminum strip.

[0156] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An aluminum strip pretreatment device, characterized in that, Comprising at least two spraying devices, each of the spraying devices including a treatment tank, an upper spraying assembly, a lower spraying assembly, a liquid storage device, an infusion assembly and a delivery pump; A treatment chamber is defined within the treatment tank. The upper spraying assembly and the lower spraying assembly are respectively disposed within the treatment chamber. The spraying direction of the upper spraying assembly is downward, the lower spraying assembly is located below the upper spraying assembly, the spraying direction of the lower spraying assembly is upward, and a delivery channel extending along a set direction is formed between the upper spraying assembly and the lower spraying assembly; The treatment tank is configured with an input port and an output port disposed opposite to each other. The input port and the output port are respectively in communication with the delivery channel; A liquid storage chamber is defined within the liquid storage device. The liquid storage chamber is used for accommodating the spraying liquid. The treatment chamber is in communication with the liquid storage chamber; the liquid storage chamber is respectively in communication with the upper spraying assembly and the lower spraying assembly through the infusion assembly, and the delivery pump is disposed on the infusion assembly; The at least two spraying devices are arranged in sequence along the set direction, and the output port of one of the adjacent two spraying devices is correspondingly disposed with the input port of the other; 2. The aluminum strip pretreatment equipment according to claim 1, wherein The at least two spraying devices include an alkali washing spraying device, a first water washing spraying device, an acid washing spraying device, a second water washing spraying device and a rinsing spraying device arranged in sequence along the set direction; 3. The aluminum strip pretreatment equipment according to claim 2, characterized in that, The aluminum strip pretreatment equipment further includes a scraping roller set. The scraping roller set is disposed within the treatment chamber. The scraping roller set includes a scraping upper roller body and a scraping lower roller body. The scraping upper roller body is disposed at the front end of the upper spraying assembly, and the scraping lower roller body is disposed at the front end of the lower spraying assembly; The axis of the scraping upper roller body is horizontally disposed and perpendicular to the set direction. The scraping upper roller body is used for contacting the upper surface of the aluminum strip; The axis of the scraping lower roller body is parallel to the axis of the scraping upper roller body. The scraping lower roller body is used for contacting the lower surface of the aluminum strip; The scraping upper roller body and the scraping lower roller body are arranged in a staggered manner along the set direction. The scraping upper roller body and the scraping lower roller body are used for scraping the aluminum strip in a direction away from the advancing direction of the aluminum strip; 4. The aluminum strip pretreatment equipment according to claim 3, wherein, The aluminum strip pretreatment equipment further includes a squeezing roller set. The squeezing roller set is disposed within the treatment chamber. The squeezing roller set includes a squeezing upper roller body and a squeezing lower roller body that are relatively and contactingly disposed. The squeezing upper roller body is disposed at the front end of the upper spraying assembly, and the squeezing lower roller body is disposed at the front end of the lower spraying assembly; The axis of the squeezing upper roller body is horizontally disposed and perpendicular to the set direction. The squeezing upper roller body is used for contacting the upper surface of the aluminum strip; The axis of the squeezing lower roller body is parallel to the axis of the squeezing upper roller body. The squeezing lower roller body is used for contacting the lower surface of the aluminum strip; The squeezing upper roller body and the squeezing lower roller body are used for scraping the aluminum strip in a direction away from the advancing direction of the aluminum strip; 5. The aluminum strip pretreatment equipment according to claim 4, characterized in that The scraping roller set is provided in each of the alkali washing spraying device, the acid washing spraying device and the second water washing spraying device; 6. The aluminum strip pre-treatment equipment according to claim 5, characterized in that, The squeezing roller set is provided in each of the alkali washing spraying device, the first water washing spraying device, the acid washing spraying device and the rinsing spraying device; In the alkaline cleaning spray device and the acid cleaning spray device, the squeezing upper roller body is arranged at the front end of the scraping upper roller body, and the squeezing lower roller body is arranged at the front end of the scraping lower roller body.

7. The aluminum strip pre-treatment equipment according to any one of claims 2-6, characterized in that, The alkaline cleaning spray device and the acid cleaning spray device also include exhaust components respectively, each of which has an exhaust cavity therein, and the exhaust component has an air inlet and an exhaust port, and both the air inlet and the exhaust port are connected to the exhaust cavity; the exhaust component is connected to the top of the processing box, and the air inlet is connected to the processing cavity.

8. The aluminum strip pretreatment equipment according to claim 7, characterized in that, The alkali washing spray device comprises an alkali washing exhaust member, the alkali washing exhaust member comprises a first exhaust pipe and a second exhaust pipe connected to each other, and the first exhaust pipe is connected to the processing chamber; The pickling spray device includes a pickling exhaust component, which includes a third exhaust pipe and a fourth exhaust pipe that are connected to each other. The third exhaust pipe is connected to the processing chamber, and the end of the fourth exhaust pipe away from the third exhaust pipe is connected to the second exhaust pipe.

9. The aluminum strip pretreatment equipment according to any one of claims 1-6, characterized in that The upper spray assembly and the lower spray assembly respectively include a plurality of nozzles arranged in sequence along the extension direction of the delivery channel, the nozzles are connected to the infusion assembly, the spray angle of the nozzles is 40°-60°, and the spray coverage ranges of two adjacent nozzles on the delivery channel intersect with each other.

10. The aluminum strip pre-treatment equipment according to any one of claims 3-6, characterized in that, The scraping roller assembly also includes a support and a driving mechanism; The support is arranged on the processing box, the scraping upper roller body and the scraping lower roller body are respectively slidably arranged on the support, and the sliding directions of the scraping upper roller body and the scraping lower roller body are perpendicular to the set direction; The driving mechanism is connected to the scraping upper roller body and the scraping lower roller body respectively, and drives the scraping upper roller body and the scraping lower roller body to slide relative to the support respectively.

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