Spraying equipment for galvanization of aluminum pipe

Abstract

The invention relates to spraying equipment for aluminum pipe galvanization, and belongs to the technical field of aluminum pipe galvanization, the spraying equipment comprises a spraying box, a placement through hole for an aluminum pipe to penetrate through is formed in the spraying box in a penetrating mode, a spraying mechanism is arranged in the spraying box, and the spraying mechanism comprises an outer supporting ring and an inner embedding ring; the outer supporting ring and the embedded ring are coaxially arranged, the embedded ring is rotationally arranged on the outer supporting ring, a plurality of spray guns used for galvanizing the surface of the aluminum pipe are arranged on the inner wall of the embedded ring, the multiple spray guns are arranged in a circumferential array mode with the axis of the embedded ring as the center, and a containing cavity used for containing zinc liquid is formed in the outer supporting ring. A liquid inlet pipe used for allowing zinc liquid to enter the containing cavity is arranged on the outer supporting ring, a liquid inlet through hole corresponding to the spray gun is formed in the embedded ring in a penetrating mode, the liquid inlet through hole communicates with the containing cavity, and a rotating assembly used for driving the embedded ring to rotate is arranged on the spraying box. The aluminum pipe has the effect of ensuring the strength of the zinc layer attached to the aluminum pipe.

Description

Technical Field

[0001] The present application relates to the technical field of aluminum tube galvanizing, and in particular to a spraying device for aluminum tube galvanizing. Background Art

[0002] In the prior art, when galvanizing aluminum tubes, arc zinc spraying is typically used to spray molten zinc droplets onto the surface of the aluminum tube. The zinc droplets come into contact with the aluminum tube at a temperature above the melting point of zinc, melting and bonding to form a zinc spray layer with a certain degree of adhesion, which is used to improve the corrosion resistance of the finished aluminum tube. In the actual spraying process, three spray guns are generally used. The three spray guns are spaced apart in the horizontal direction and arranged in a circular array centered on the axis of the aluminum tube to be sprayed. However, in actual application, it was found that the spacing between the three spray guns is different. Therefore, the surface temperature of the aluminum tube when it is transported to the three spray guns is different, which also affects the strength of the zinc layer attached to the aluminum tube. In addition, the spray range of the spray gun does not easily change with the size of the aluminum tube, which can easily affect the thickness of the zinc layer attached to the aluminum tube.

[0003] In actual application, it is found that if the thickness of the zinc layer on the surface of the aluminum tube varies too much, since the zinc layer can only be used to enhance the corrosion resistance of the aluminum tube but cannot increase the strength of the aluminum tube, during the drawing or internal thread processing of the aluminum tube, the uneven thickness of the zinc layer may cause the thickness of the aluminum part of the finished product to be different, which will affect the strength of the finished product to a certain extent. Summary of the Invention

[0004] In order to ensure the strength and thickness of the zinc layer attached to the aluminum tube, thereby improving the quality of the aluminum tube with the zinc layer attached, the present application provides a spraying device for galvanizing the aluminum tube.

[0005] The present application provides a spraying device for aluminum tube galvanizing using the following technical solutions:

[0006] The spraying device for galvanizing an aluminum tube comprises a spraying box, wherein the spraying box is provided with a placement through hole for the aluminum tube to pass through, the spraying box is provided with a spraying mechanism, the spraying mechanism comprises an outer support ring and an inner embedded ring, the spraying box is provided with a support leg for providing support to the outer support ring, the outer support ring and the inner embedded ring are coaxially arranged and the inner embedded ring is rotatably arranged on the outer support ring, a plurality of spray guns for galvanizing the surface of the aluminum tube are provided on the inner wall of the inner embedded ring, the plurality of spray guns are arranged in a circular array with the axis of the inner embedded ring as the center, the outer support ring is provided with a accommodating cavity for accommodating zinc liquid, the outer support ring is provided with a liquid inlet pipe for supplying zinc liquid into the accommodating cavity, the inner ring is provided with a liquid inlet through hole corresponding to the spray gun, the liquid inlet through hole is connected to the accommodating cavity, and the spraying box is provided with a rotating component for driving the inner embedded ring to rotate.

[0007] By adopting the above technical solution, since multiple spray guns are arranged on the embedded ring and the distance between the spray guns and the aluminum tube is consistent, it is effectively ensured that when the zinc liquid sprayed by the spray gun contacts the surface of the aluminum tube, the temperature of the surface of the aluminum tube is high and the temperature of the surface of the aluminum tube is consistent, thereby achieving the effect of improving the strength of the zinc layer attached to the surface of the aluminum tube; and the embedded ring can drive the spray gun to rotate relative to the outer support ring, and the rotation rate of the embedded ring can be adjusted according to the size of the aluminum tube and the sliding speed of the aluminum tube, thereby ensuring the thickness of the zinc layer attached to the surface of the aluminum tube, making it difficult for the aluminum tube with the zinc layer to break due to the uneven thickness of the zinc layer during the subsequent processing process, effectively improving the quality of the galvanized aluminum tube.

[0008] Preferably, the rotating assembly includes a rotating gear arranged on an embedded ring, a control motor is provided in the spray box, and a control gear meshing with the rotating gear is coaxially provided on the output shaft of the control motor, and the rotating gear and the control gear are both bevel gears, and a control block electrically connected to the control motor is provided on the spray box, and a power supply block is slidingly connected to the spray box, and a power supply cavity is provided on the control block for the power supply block to be embedded after sliding, and the power supply block and the control block cooperate to control the opening and closing of the control motor, and a control component for controlling the sliding of the power supply block is provided in the spray box.

[0009] By adopting the above technical solution, since both the rotating gear and the control gear are bevel gears, the bevel gears can be used to transmit motion and power between two intersecting axes. When the control motor is started, the rotating gear can be driven to rotate through the control gear, thereby driving the inner ring to rotate relative to the outer support ring.

[0010] Preferably, the spray box is provided with a supporting part and a clamping part symmetrically arranged on both sides of the aluminum tube, the supporting part is used to provide support for the aluminum tube, the clamping part is slidably arranged in the spray box along the vertical direction, and the clamping part cooperates with the supporting part to clamp the aluminum tube, and the spray box is provided with a sliding part for controlling the sliding of the clamping part.

[0011] By adopting the above technical solution, when the zinc liquid is cut off or the spraying mechanism fails, the aluminum tube can be clamped by the cooperation of the clamping part and the supporting part to limit the slippage of the aluminum tube, making it difficult for the ungalvanized aluminum tube to be transported toward the cooling box, thereby reducing the loss of the aluminum tube during the galvanizing process.

[0012] Preferably, the sliding member includes a linkage gear rotatably arranged in the spray box, the linkage gear is a column gear, the clamping part is provided with a clamping rack engaged with the linkage gear, the power supply block is provided with an auxiliary block, and the auxiliary block is provided with a power supply rack engaged with the linkage gear, so that when the power supply block slides in the direction away from the control block, the clamping part slides toward the support part.

[0013] By adopting the above technical solution, in actual application, when the auxiliary block drives the power supply block to slide and separate from the control block, the clamping part can slide synchronously toward the support part under the action of the gear transmission until the clamping part can cooperate with the support part to clamp the aluminum tube, without the need for an additional drive source, saving energy.

[0014] Preferably, the spray box is provided with an observation window, and the spray box is provided with a box door for controlling the communication between the observation window and the outside world. The box door is rotatably connected to the spray box, and the spray box is provided with a locking block for locking the rotation of the box door. The spray box is provided with a locking groove for the sliding of the locking block, and the box door is correspondingly provided with a locking cavity for the locking block to be embedded. When the box door is rotated to close the communication between the observation window and the outside world, the locking cavity is connected to the locking groove, and the spray box is provided with a locking piece for controlling the sliding of the locking block.

[0015] By adopting the above technical solution, the arrangement of the observation window facilitates the adjustment, inspection and maintenance of the components in the spray box; the arrangement of the locking block can lock the rotation of the box door during the spraying process of the zinc liquid, making it difficult for the operator to open the box door, thereby effectively improving the safety of the spray box during use.

[0016] Preferably, the locking member includes an operating block provided on the spray box, an operating slot for the operating block to slide is provided on the spray box, the operating slot is communicated with the locking slot, and an operating cavity for the operating block to slide and embed therein is provided on the locking block, so that the end of the operating block close to the ground is inclined, the shape of the operating cavity is consistent with that of the operating block, and when the operating block slides to embed into the operating cavity, the locking block slides to embed into the locking cavity;

[0017] The operating block is located on the sliding track of the auxiliary block. A guide arc surface is provided at one end of the operating block facing the auxiliary block. During the process of the auxiliary block driving the power supply block to slide toward the control block, the operating block slides and is embedded in the operating cavity under the cooperation of the guide arc surface and the auxiliary block. An operating elastic member is provided in the spray box for pushing the operating block to reset.

[0018] By adopting the above technical solution, in the process of the auxiliary block driving the power supply block to slide toward the control block, the auxiliary block can first slide to contact the guide arc surface on the operating block, and then as the auxiliary block slides, the operating block can slide and be embedded in the operating cavity in cooperation with the guide arc surface and the auxiliary block, thereby driving the locking block to slide to be embedded in the locking cavity and limit the sliding of the operating block and the locking block. The whole process does not require an additional driving source, saving energy; through the setting of the operating spring, when the auxiliary block slides to release the lock on the sliding of the operating block, the operating block can be reset under the action of the operating spring, thereby releasing the lock of the operating block on the sliding of the locking block, which is convenient for releasing the lock on the sliding of the operating block and the locking block.

[0019] Preferably, a rebound block is provided on the box door, and the rebound block is slidably arranged in the locking cavity. A rebound elastic member is provided on the box door for pushing the rebound block to slide toward the opening of the locking cavity.

[0020] By adopting the above technical solution, the rebound block cooperates with the rebound spring. When the operating block slides to release the lock on the sliding of the locking block, the locking block can slide to release the lock on the rotation of the door, thereby facilitating the opening of the door.

[0021] Preferably, the outer diameter of the locking block at one end close to the ground decreases gradually in the direction toward the ground.

[0022] By adopting the above technical solution, a guide is provided for the sliding of the locking block toward the locking cavity, thereby facilitating the sliding of the locking block into the locking cavity and facilitating the opening and closing of the door to a certain extent.

[0023] Preferably, a locking piece is provided at one end of the locking block away from the ground, and a control piece that is magnetically engaged with the locking piece is provided on the inner wall of the locking slot.

[0024] By adopting the above technical solution, when the locking block slides toward the control plate under the action of the rebound block, the locking block can slide until it is completely received in the locking slot under the magnetic cooperation between the control plate and the locking plate, so that in the absence of other external forces, the locking block can remain received in the locking slot.

[0025] Preferably, one end of the clamping portion away from the supporting portion passes through the spray box, and one end of the clamping portion located outside the spray box is provided with a display block for displaying the position of the clamping portion.

[0026] By adopting the above technical solution, since the sliding of the clamping part is related to the locking of the box door and the opening and closing of the control motor, the staff can judge the situation inside the spray box by the position of the display block, and thus determine whether the box door can be opened, which improves the safety of the spray box during use to a certain extent.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Since multiple spray guns are all set on the embedded ring and the distance between the spray guns and the aluminum tube is consistent, it effectively ensures that when the zinc liquid sprayed by the spray gun contacts the surface of the aluminum tube, the temperature of the aluminum tube surface is high and consistent, thereby achieving the effect of improving the strength of the zinc layer attached to the surface of the aluminum tube;

[0029] 2. The inner ring can drive the spray gun to rotate relative to the outer support ring. The rotation rate of the inner ring can be adjusted according to the size of the aluminum tube and the sliding speed of the aluminum tube, thereby ensuring the thickness of the zinc layer attached to the surface of the aluminum tube. The aluminum tube with the zinc layer is not easy to break due to the uneven thickness of the zinc layer during the subsequent processing, which effectively improves the quality of the galvanized aluminum tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the spraying mechanism in an embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the cooperation structure between the outer support ring and the inner embedded ring in the embodiment of the present application.

[0033] Figure 4 It is a schematic diagram of the spray box structure in the embodiment of the present application.

[0034] Figure 5 This is a schematic diagram of the structure of the spray box without the top in the embodiment of the present application.

[0035] Figure 6 It is a schematic diagram of the door locking structure in an embodiment of the present application.

[0036] Figure 7 This is a schematic diagram of the position of the locking block when the operating block is embedded in the operating cavity in an embodiment of the present application.

[0037] Figure 8 This is a schematic diagram of the position of the locking block when the operating block is located outside the operating cavity in an embodiment of the present application.

[0038] Explanation of reference numerals: 1. spray box; 11. placement through hole; 12. cooling box; 13. control motor; 131. control gear; 14. control block; 141. power supply chamber; 15. linkage gear; 16. observation window; 17. locking block; 171. locking chute; 172. operating chamber; 173. locking plate; 174. control plate; 18. operating block; 181. operating chute; 182. guide arc surface; 183. operating spring; 2. spray mechanism; 21. outer support ring; 211. support foot; 22. Embedded ring; 221, spray gun; 222, rotating gear; 23, accommodating chamber; 24, liquid inlet pipe; 25, liquid inlet through hole; 3, supporting part; 31, supporting block; 32, supporting rod; 321, fixing part; 322, sliding part; 323, supporting nut; 4, clamping part; 41, clamping rack; 42, display block; 5, power supply block; 51, auxiliary block; 511, auxiliary chamber; 512, power supply rack; 52, slide cylinder; 6, box door; 61, locking chamber; 62, rebound block; 621, rebound spring. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-8 This application is described in further detail.

[0040] The present application discloses a spraying device for galvanizing aluminum tubes, referring to Figure 1 , including a spray box 1, which is penetrated by a placement through hole 11 for the aluminum tube to pass through, and a spray mechanism 2 for galvanizing the surface of the aluminum tube is provided in the spray box 1. The aluminum tube after hot extrusion must first enter the spray box 1 through the placement through hole 11, and after being galvanized by the spray mechanism 2 in the spray box 1, it must pass through the placement through hole 11 and move to the cooling box 12 for cooling, so that the zinc layer adheres to the aluminum tube.

[0041] Reference Figure 1 、 Figure 2 and Figure 3 The spraying mechanism 2 includes an outer support ring 21 and an inner ring 22. The spray box 1 is provided with a support leg 211 for providing support for the outer support ring 21. The outer support ring 21 and the inner ring 22 are coaxially arranged and the inner ring 22 is rotatably arranged on the outer support ring 21. A plurality of spray guns 221 for galvanizing the surface of the aluminum tube are fixed on the inner wall of the inner ring 22. In the embodiment of the present application, there are three spray guns 221, and the three spray guns 221 are arranged in a circular array with the axis of the inner ring 22 as the center. The outer support ring 21 is provided with a accommodating chamber 23 for accommodating zinc liquid. The accommodating chamber 23 is arranged in an annular shape and is coaxial with the outer support ring 21. The outer support ring 21 is provided with a liquid inlet pipe 24 for supplying zinc liquid into the accommodating chamber 23. The inner ring 22 is penetrated by a liquid inlet through-hole 25 corresponding to the spray gun 221. The liquid inlet through-hole 25 is connected with the accommodating chamber 23. The prepared zinc liquid first enters the accommodating chamber 23 through the liquid inlet pipe 24, and then enters the spray gun 221 through the liquid inlet through-hole 25. After the spray gun 221 is started, the zinc liquid is sprayed out and adheres to the surface of the aluminum tube to form a zinc layer.

[0042] In actual application, the spraying mechanism 2 can be placed as close to the hot extrusion equipment as possible, which effectively ensures that when the zinc liquid sprayed from the spray gun 221 contacts the surface of the aluminum tube, the temperature of the surface of the aluminum tube is consistent and the temperature of the surface of the aluminum tube is higher, which effectively improves the strength of the zinc layer adhering to the surface of the aluminum tube; and the inner ring 22 can drive the spray gun 221 to rotate relative to the outer support ring 21, and the rotation rate of the inner ring 22 can be adjusted according to the size of the aluminum tube and the sliding speed of the aluminum tube, so as to ensure the thickness of the zinc layer adhering to the surface of the aluminum tube, so that the aluminum tube with the zinc layer is not easy to break due to the uneven thickness of the zinc layer during the subsequent processing, which effectively improves the quality of the galvanized aluminum tube.

[0043] Reference Figure 1 、 Figure 2 and Figure 4The spray box 1 is provided with a rotating assembly for driving the inner ring 22 to rotate, and the rotating assembly includes a rotating gear 222 fixed on the inner ring 22, and the rotating gear 222 is coaxially arranged with the inner ring 22. A control motor 13 is fixed in the spray box 1, and the control motor 13 is fixed to the top of the spray box 1 by bolts. A control gear 131 that meshes with the rotating gear 222 is coaxially fixed on the output shaft of the control motor 13. The rotating gear 222 and the control gear 131 are both bevel gears. The bevel gears can be used to transmit motion and power between two intersecting axes. When the control motor 13 is started, it can drive the rotating gear 222 to rotate through the control gear 131, thereby driving the inner ring 22 to rotate relative to the outer support ring 21.

[0044] Reference Figure 1 and Figure 4 , a support portion 3 is provided in the spray box 1, and the support portion 3 is used to provide support for the aluminum tube entering the spray box 1. The support portion 3 is located between the hot extrusion equipment and the spray mechanism 2. The support portion 3 includes a support block 31 and a support rod 32. The end surface of the support block 31 away from the support rod 32 is provided with a placement arc surface for providing positioning for the aluminum tube; the support rod 32 includes a fixed portion 321 and a sliding portion 322. The sliding portion 322 is fixed to one end of the support block 31 away from the placement arc surface, and one end of the fixed portion 321 is fixed to the spray box 1. The fixed portion The other end of 321 is provided with a sliding hole for accommodating the sliding part 322. A supporting thread is provided on the outer wall of the sliding part 322 and the cross-section of the sliding part 322 away from the support block 31 is square. A supporting nut 323 that is rotatably connected to the fixed part 321 and is threadably matched with the supporting thread. The supporting nut 323 can be rotated to adjust the height of the support block 31, so that the aluminum tube placed on the support part 3 is coaxially arranged with the outer support ring 21, which effectively improves the reliability of the zinc layer with uniform thickness attached to the surface of the aluminum tube.

[0045] Reference Figure 1 and Figure 4 A clamping part 4 is provided in the spray box 1, and the clamping part 4 and the supporting part 3 are symmetrically arranged on both sides of the aluminum tube. The clamping part 4 is slidably arranged in the spray box 1 along the vertical direction, and the clamping part 4 cooperates with the supporting part 3 to clamp the aluminum tube, so that the material of the clamping part 4 and the aluminum tube at one end has a certain deformation ability, so that the clamping part 4 can be suitable for aluminum tubes of different sizes, thereby improving the applicability of the spray box 1; when the zinc liquid is cut off or the spraying mechanism 2 fails, the aluminum tube can be clamped by the cooperation of the clamping part 4 and the supporting part 3, limiting the slippage of the aluminum tube, making it difficult for the ungalvanized aluminum tube to be transported toward the cooling box 12, thereby reducing the loss of the aluminum tube during the galvanizing process.

[0046] Reference Figure 1 and Figure 4The spray box 1 is provided with a control block 14 electrically connected to the control motor 13, and the spray box 1 is slidingly connected with a power supply block 5. The control block 14 is provided with a power supply cavity 141 for the power supply block 5 to slide and embed. When the power supply block 5 slides to the embedded power supply cavity 141, the control motor 13 can operate normally. When the power supply block 5 slides and separates from the control block 14, the control motor 13 cannot start normally. The power supply block 5 and the control block 14 cooperate to control the opening and closing of the control motor 13.

[0047] Reference Figure 4 and Figure 5 , an auxiliary block 51 is provided at the end of the power supply block 5 away from the control block 14, which can drive the power supply block 5 to slide during auxiliary fast sliding. A control component for controlling the sliding of the power supply block 5 is provided in the spray box 1. In the embodiment of the present application, the control component is a slide cylinder 52, which is located between the auxiliary block 51 and the top of the spray box 1. The slide cylinder 52 is fixed to the top of the spray box 1 by bolts. An auxiliary cavity 511 for accommodating the slide cylinder 52 is opened on the auxiliary block 51. Through the setting of the auxiliary cavity 511, the space in the spray box 1 is reasonably and effectively utilized, and the volume of the spray box 1 is reduced to a certain extent. The slider on the slide cylinder 52 is fixed to the inner wall of the auxiliary cavity 511. When the slide cylinder 52 is started, it can drive the auxiliary block 51 to slide.

[0048] Reference Figure 1 、 Figure 4 and Figure 5 A sliding member for controlling the sliding of the clamping part 4 is provided in the spray box 1. The sliding member includes a linkage gear 15 rotatably arranged in the spray box 1. The linkage gear 15 is a column gear. A clamping rack 41 meshing with the linkage gear 15 is provided on the clamping part 4. A power supply rack 512 meshing with the linkage gear 15 is provided on the auxiliary block 51. The clamping rack 41 and the power supply rack 512 are arranged perpendicularly. When the power supply block 5 slides in a direction away from the control block 14 under the action of the auxiliary block 51, the clamping part 4 slides toward the support part 3 under the action of the gear transmission. In actual application, when the auxiliary block 51 drives the power supply block 5 to slide and separate from the control block 14 under the action of the slide cylinder 52, the clamping part 4 can synchronously slide toward the direction of the support part 3 to cooperate with the support part 3 to clamp the aluminum tube. No additional drive source is required, saving energy.

[0049] Reference Figure 5 and Figure 6The spray box 1 is provided with an observation window 16. The setting of the observation window 16 makes it easy to adjust, inspect and maintain the parts in the spray box 1. The spray box 1 is provided with a box door 6 for controlling the communication between the observation window 16 and the outside world. The box door 6 is rotatably connected to the spray box 1 and a locking block 17 is provided on the spray box 1 for locking the rotation of the box door 6. The spray box 1 is provided with a locking slide 171 for the locking block 17 to slide. A locking cavity 61 for the locking block 17 to be embedded in the box door 6 is correspondingly provided on the box door 6. When the box door 6 is rotated to close the communication between the observation window 16 and the outside world, the locking cavity 61 is communicated with the locking slide 171, and the locking block 17 can slide along the locking slide 171 to the embedded locking cavity 61 to lock the rotation of the box door 6. Therefore, it is not easy for the operator to open the box door 6 during the spraying process of the zinc liquid, which effectively improves the safety of the spray box 1 during use.

[0050] Reference Figure 6 、 Figure 7 and Figure 8 The spray box 1 is provided with a locking member for controlling the sliding of the locking block 17. The locking member includes an operating block 18 arranged on the spray box 1. The spray box 1 is provided with an operating slide 181 for the operating block 18 to slide. The operating slide 181 is communicated with the locking slide 171. The locking block 17 is provided with an operating cavity 172 for the operating block 18 to slide and then be embedded, so that the end of the operating block 18 close to the ground is inclined. The shape of the operating cavity 172 is consistent with the operating block 18. When the operating block 18 slides to the embedded operating cavity 172, it can drive the locking block 17 to slide toward the ground to the embedded locking cavity 61, thereby locking the rotation of the box door 6. In actual application, the operating block 18 is located on the sliding track of the auxiliary block 51. A guide arc surface 182 is provided on one end of the operating block 18 facing the auxiliary block 51. In the process of the auxiliary block 51 driving the power supply block 5 to slide toward the control block 14, the auxiliary block 51 can first slide to contact the guide arc surface 182 on the operating block 18, and then as the auxiliary block 51 slides, the operating block 18 can slide and embed into the operating cavity 172 under the cooperation of the guide arc surface 182 and the auxiliary block 51, thereby driving the locking block 17 to slide into the embedded locking cavity 61 and limit the sliding of the operating block 18 and the locking block 17. The whole process does not require an additional driving source, saving energy.

[0051] Reference Figure 5, an operating elastic member for pushing the operating block 18 to reset is provided in the spray box 1. In the embodiment of the present application, the operating elastic member is an operating spring 183. One end of the operating spring 183 is fixed to the operating block 18, and the other end of the operating spring 183 is fixed to the inner wall of the operating slide groove 181. Through the setting of the operating spring 183, when the auxiliary block 51 slides to release the lock on the sliding of the operating block 18, the operating block 18 can be reset under the action of the operating spring 183, thereby releasing the lock of the operating block 18 on the sliding of the locking block 17, which is convenient for releasing the lock on the sliding of the operating block 18 and the locking block 17.

[0052] Reference Figure 7 and Figure 8 The box door 6 is provided with a rebound block 62, which is slidably arranged in the locking cavity 61, and the rebound block 62 slides along the length direction of the locking cavity 61. The box door 6 is provided with a rebound elastic member for pushing the rebound block 62 to slide toward the opening of the locking cavity 61. In the embodiment of the present application, the rebound elastic member is a rebound spring 621. One end of the rebound spring 621 is fixed to the inner wall of the locking cavity 61, and the other end of the rebound spring 621 is fixed to the rebound block 62. Through the setting of the rebound block 62, when the operating block 18 slides to release the lock of the locking block 17, the locking block 17 can slide under the cooperation of the rebound block 62 and the rebound spring 621 to release the lock on the rotation of the box door 6.

[0053] Reference Figure 7 and Figure 8 The outer diameter of the end of the locking block 17 closest to the ground decreases gradually in the direction toward the ground, providing a guide for the sliding of the locking block 17 toward the locking cavity 61, thereby facilitating the sliding of the locking block 17 into the locking cavity 61. A locking piece 173 is fixed to the end of the locking block 17 away from the ground, and a control piece 174 is provided on the inner wall of the locking groove 171 to magnetically cooperate with the locking piece 173. When the locking block 17 slides toward the control piece 174 under the action of the rebound block 62, the control piece 174 and the locking piece 173 can slide to be completely received in the locking groove 171 under the magnetic cooperation. In the absence of other external forces, the locking block 17 can remain received in the locking groove 171.

[0054] Reference Figure 1 and Figure 4, so that the end of the clamping part 4 away from the supporting part 3 passes through the spray box 1, and the end of the clamping part 4 located outside the spray box 1 is fixed with a display block 42, and the display block 42 is used to display the sliding length of the clamping part 4. When the clamping part 4 slides to cooperate with the supporting part 3 to clamp the aluminum tube, the display block 42 is in contact with the top surface of the spray box 1. When the clamping part 4 slides to separate from the aluminum tube, the display block 42 is separated from the spray box 1. The staff can judge the situation inside the spray box 1 by the position of the display block 42, and thus judge whether the box door 6 can be opened, which improves the safety of the spray box 1 during use to a certain extent.

[0055] The implementation principle of the spraying equipment for galvanizing aluminum tubes provided in the embodiment of the present application is that before actual galvanizing, the heights of the support portion 3 and the clamping portion 4 are first adjusted according to the size of the aluminum tube to be galvanized, and then the box door 6 is rotated to close the observation window 16 and connect it to the outside world, and the auxiliary block 51 is driven by the slide cylinder 52 to slide to the power supply block 5 and embed it into the power supply cavity 141. During this process, the clamping portion 4 slides in the direction away from the support portion 3 and the operating block 18 drives the locking block 17 to slide to embed in the locking cavity 61, thereby locking the rotation of the box door 6.

[0056] When galvanizing is completed or the zinc liquid supply is abnormal, the slide cylinder 52 can drive the auxiliary block 51 to slide to the power supply block 5 and separate from the control block 14. During this process, the clamping part 4 slides toward the support part 3 to cooperate with the support part 3 to limit the sliding of the aluminum tube, and releases the restriction of the auxiliary block 51 on the sliding of the operating block 18. The operating block 18 and the locking block 17 are reset and the lock on the rotation of the box door 6 is released.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A spraying device for galvanizing aluminum tubes, characterized in that: The invention comprises a spray box (1), wherein a through hole (11) for passing an aluminum tube is provided on the spray box (1), a spray mechanism (2) is provided in the spray box (1), and the spray mechanism (2) comprises an outer support ring (21) and an inner embedded ring (22), and a support leg (211) for supporting the outer support ring (21) is provided in the spray box (1), the outer support ring (21) and the inner embedded ring (22) are coaxially arranged and the inner embedded ring (22) is rotatably arranged on the outer support ring (21), and a plurality of holes for coating the surface of the aluminum tube are provided on the inner wall of the inner embedded ring (22). A zinc spray gun (221), a plurality of the spray guns (221) are arranged in a circular array with the axis of the inner ring (22) as the center, the outer support ring (21) is provided with a receiving cavity (23) for receiving zinc liquid, the outer support ring (21) is provided with a liquid inlet pipe (24) for supplying zinc liquid into the receiving cavity (23), the inner ring (22) is provided with a liquid inlet through hole (25) corresponding to the spray gun (221), the liquid inlet through hole (25) is communicated with the receiving cavity (23), and the spray box (1) is provided with a rotating assembly for driving the inner ring (22) to rotate.

2. The spraying equipment for aluminum tube galvanizing according to claim 1, characterized in that: The rotating assembly includes a rotating gear (222) arranged on an embedded ring (22); a control motor (13) is provided in the spray box (1); a control gear (131) meshing with the rotating gear (222) is coaxially provided on the output shaft of the control motor (13); the rotating gear (222) and the control gear (131) are both bevel gears; a control block (14) electrically connected to the control motor (13) is provided on the spray box (1); a power supply block (5) is slidably connected to the spray box (1); a power supply cavity (141) is provided on the control block (14) for the power supply block (5) to be embedded after sliding; the power supply block (5) cooperates with the control block (14) to control the opening and closing of the control motor (13); and a control component for controlling the sliding of the power supply block (5) is provided in the spray box (1).

3. The spraying equipment for aluminum tube galvanizing according to claim 2, characterized in that: The spray box (1) is provided with a support portion (3) and a clamping portion (4) symmetrically arranged on both sides of the aluminum tube, the support portion (3) is used to provide support for the aluminum tube, the clamping portion (4) is slidably arranged in the spray box (1) along the vertical direction, the clamping portion (4) cooperates with the support portion (3) to clamp the aluminum tube, and the spray box (1) is provided with a sliding member for controlling the sliding of the clamping portion (4).

4. The spraying equipment for aluminum tube galvanizing according to claim 3, characterized in that: The sliding member includes a linkage gear (15) rotatably arranged in the spray box (1), the linkage gear (15) is a column gear, the clamping portion (4) is provided with a clamping rack (41) meshing with the linkage gear (15), the power supply block (5) is provided with an auxiliary block (51), and the auxiliary block (51) is provided with a power supply rack (512) meshing with the linkage gear (15), so that when the power supply block (5) slides in a direction away from the control block (14), the clamping portion (4) slides toward the support portion (3).

5. The spraying equipment for aluminum tube galvanizing according to claim 4, characterized in that: The spray box (1) is provided with an observation window (16), and the spray box (1) is provided with a box door (6) for controlling the communication between the observation window (16) and the outside world. The box door (6) is rotatably connected to the spray box (1), and the spray box (1) is provided with a locking block (17) for locking the rotation of the box door (6). The spray box (1) is provided with a locking groove (171) for the sliding of the locking block (17), and the box door (6) is correspondingly provided with a locking cavity (61) for the embedding of the locking block (17). When the box door (6) is rotated to close the communication between the observation window (16) and the outside world, the locking cavity (61) is communicated with the locking groove (171), and the spray box (1) is provided with a locking piece for controlling the sliding of the locking block (17).

6. The spraying equipment for aluminum tube galvanizing according to claim 5, characterized in that: The locking member includes an operating block (18) arranged on the spray box (1), an operating chute (181) for the operating block (18) to slide is provided on the spray box (1), the operating chute (181) is communicated with the locking chute (171), and an operating cavity (172) for the operating block (18) to slide and then be embedded is provided on the locking block (17), so that the end of the operating block (18) close to the ground is inclined, and the shape of the operating cavity (172) is consistent with that of the operating block (18), and when the operating block (18) slides to the embedded operating cavity (172), the locking block (17) slides to the embedded locking cavity (61); The operating block (18) is positioned on the sliding track of the auxiliary block (51); a guide arc surface (182) is provided at one end of the operating block (18) facing the auxiliary block (51); in the process of the auxiliary block (51) driving the power supply block (5) to slide toward the control block (14), the operating block (18) slides and is embedded in the operating cavity (172) under the cooperation of the guide arc surface (182) and the auxiliary block (51); an operating elastic member for pushing the operating block (18) to reset is provided in the spray box (1).

7. The spraying equipment for aluminum tube galvanizing according to claim 5, characterized in that: The box door (6) is provided with a rebound block (62), which is slidably arranged in the locking cavity (61). The box door (6) is provided with a rebound elastic member for pushing the rebound block (62) to slide toward the opening of the locking cavity (61).

8. The spraying equipment for aluminum tube galvanizing according to claim 7, characterized in that: The outer diameter of the locking block (17) at one end close to the ground decreases in sequence in a direction toward the ground.

9. The spraying equipment for aluminum tube galvanizing according to claim 7, characterized in that: A locking piece (173) is provided at one end of the locking block (17) away from the ground, and a control piece (174) that is magnetically engaged with the locking piece (173) is provided on the inner wall of the locking slot (171).

10. The spraying equipment for aluminum tube galvanizing according to claim 3, characterized in that: The end of the clamping portion (4) away from the supporting portion (3) passes through the spray box (1), and the end of the clamping portion (4) located outside the spray box (1) is provided with a display block (42) for displaying the position of the clamping portion (4).

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