A kind of anticorrosive coating spraying equipment for surface treatment of chemical anticorrosion tank

Abstract

The application discloses a kind of anticorrosion coating spraying equipment for chemical anticorrosion tank surface treatment, it is related to spraying equipment technical field, including flow guide pipe, support mobile unit, connecting part, installation bin, cover plate, rotary tube, rotary spraying unit, sliding column, spray head, drive adjusting unit, be located in the rotary tube, the drive adjusting unit is used to drive sliding column along rotary tube radial movement, and when the sliding column moves, drive the spray head rotates around the axial rotation of pivot, when using, by setting drive adjusting unit, so that sliding column drives spray head moves along the radial direction of rotary tube, simultaneously drive spray head to rotate during moving process, so that the spraying track of spray head is adapted to the profile of the neck, shoulder inner wall longitudinal section of tank body, so that the mouth of spray head is as perpendicular as possible with neck, shoulder inner wall, so that it can be more uniform to be sprayed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spraying equipment, in particular to an anticorrosive coating spraying equipment for surface treatment of a chemical anticorrosive tank. BACKGROUND

[0002] The chemical tank is a general term for tank equipment used in the processes of raw material pretreatment, chemical reaction and product refining in chemical production, belongs to the basic equipment of chemical industry, and covers various types such as storage tanks, mixing tanks and reaction tanks. The application fields include chemical industry, coating, medicine, food and other industries. The materials (such as acid, alkali, salt and organic solvent) stored in the chemical tank are mostly highly corrosive. In order to consider the cost and strength, the tank body is usually made of carbon steel. Although carbon steel is strong, it is very easy to be corroded by these media due to its active chemical properties. The corrosion will continuously thin the tank wall, resulting in a decrease in strength, and in severe cases, leakage, safety accidents and environmental pollution. Product pollution: metal ions such as rust produced by corrosion will mix into the stored chemicals, resulting in a decrease in product purity, discoloration and deterioration, causing huge economic losses.

[0003] As shown in Figure 10 The existing chemical tank generally includes a tank body 1, a pipe opening 1a, a neck portion 1b and a shoulder portion 1c. The longitudinal section of the shoulder portion 1c is generally a parabola, and the longitudinal section of the neck portion 1b is generally a straight line. Therefore, when spraying the inner wall of the neck portion 1b and the shoulder portion 1c of the tank body 1, the spraying direction needs to be adjusted in real time to ensure that the nozzle of the spraying equipment is approximately perpendicular to the inner wall of the shoulder portion 1c and the neck portion 1b, so that the spraying is uniform. However, the nozzle of the existing spraying equipment is usually fixedly installed. During spraying, the coating is prone to dripping and other phenomena due to uneven spraying. SUMMARY

[0004] In view of the problems in the prior art, the present application is proposed. Therefore, the purpose of the present application is to provide an anticorrosive coating spraying equipment for surface treatment of a chemical anticorrosive tank, which solves the problem that the nozzle of the existing spraying equipment is usually fixedly installed, and the coating is prone to dripping and other phenomena due to uneven spraying during spraying.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: an anticorrosive coating spraying equipment for surface treatment of a chemical anticorrosive tank, comprising:

[0006] A flow guide pipe is provided with a support moving unit, and one end is connected with a connecting portion. The connecting portion is fixedly connected with a mounting bin away from one end of the flow guide pipe. One side of the mounting bin is open and provided with a cover plate. The cover plate is rotatably connected with a rotating pipe. The rotating pipe penetrates the flow guide pipe. A rotating spraying unit for driving the rotating pipe to rotate is arranged in the mounting bin.

[0007] A sliding column is vertically slidably arranged in the rotating pipe, and a nozzle is pivotally connected to one end of the sliding column away from the rotating pipe through a mounting pivot, and the nozzle is connected to the rotating pipe through a pipeline;

[0008] A driving adjustment unit is arranged in the rotating pipe, and the driving adjustment unit is used to drive the sliding column to move along the radial direction of the rotating pipe, and drive the nozzle to rotate around the pivot when the sliding column moves.

[0009] As a preferred scheme of the chemical anticorrosion tank surface treatment anticorrosion coating spraying equipment, the support moving unit comprises two hinge seats sleeved on the flow guide pipe, one of the hinge seats is fixedly sleeved on the flow guide pipe, and the other hinge seat is slidably sleeved on the flow guide pipe, the two hinge seats are each hingedly connected with a support leg, the support leg is rotatably connected with a support wheel at one end away from the flow guide pipe, and the support legs on the two hinge seats are correspondingly hingedly connected.

[0010] As a preferred scheme of the chemical anticorrosion tank surface treatment anticorrosion coating spraying equipment, the flow guide pipe is threadedly sleeved with a rotating sleeve, and one of the hinge seats is rotatably connected to the rotating sleeve.

[0011] As a preferred scheme of the chemical anticorrosion tank surface treatment anticorrosion coating spraying equipment, the rotating spraying unit comprises a motor mounted in the mounting bin, the motor is drivingly connected with a driving gear, the rotating pipe is fixedly sleeved with a driven gear, and the driving gear and the driven gear are meshed.

[0012] As a preferred scheme of the chemical anticorrosion tank surface treatment anticorrosion coating spraying equipment, the driving adjustment unit comprises a connecting barrel slidably sleeved on the rotating pipe, one end of the connecting barrel away from the rotating pipe is fixedly connected with an abutting frame, the connecting barrel is provided with a rotating assembly, and the rotating assembly is used to drive the rotating pipe to rotate when the connecting barrel and the rotating pipe relatively move.

[0013] A rotating ring is rotatably sleeved on the periphery of the connecting barrel, a hinge rod is hingedly connected to the periphery of the rotating ring, one end of the hinge rod away from the rotating ring is hingedly connected to the sliding column, two ends of the pivot are each fixedly connected with a swing arm, the rotating pipe is fixedly connected with a vertical rod, and the upper end of the vertical rod is abutted with the downward one side of the swing arm.

[0014] As a preferred scheme of the chemical anticorrosion tank surface treatment anticorrosion coating spraying equipment, one end of the sliding column away from the rotating pipe is fixedly connected with a mounting seat, the pivot penetrates through the mounting seat and is freely rotatable, a volute spring is mounted in the inner cavity of the mounting seat, the volute spring is sleeved on the pivot, the inner ring end of the volute spring is fixedly connected to the pivot, and the outer ring end is fixedly connected to the inner cavity wall of the mounting seat.

[0015] As a preferred scheme of the anticorrosion coating spraying equipment for surface treatment of chemical anticorrosion tank, the rotating assembly comprises two rolling balls rotatably embedded in the circumferential edge of one end of the rotating pipe, and the inner wall of the connecting cylinder is provided with a spiral rolling groove for clamping and free rolling of the rolling balls.

[0016] As a preferred scheme of the anticorrosion coating spraying equipment for surface treatment of chemical anticorrosion tank, an elastic member is mounted in the connecting cylinder, and the elastic member elastically abuts against the end surface of the rotating pipe.

[0017] As a preferred scheme of the anticorrosion coating spraying equipment for surface treatment of chemical anticorrosion tank, the inner cavity of the spray head is mounted with an annular air bag, the annular hole of the annular air bag is coaxial with the inner cavity of the spray head and communicates with the inner cavity, the outer circumferential edge of the annular air bag is fixedly connected to the wall of the inner cavity of the spray head, and the sliding column is provided with an inflation unit for inflating the annular air bag when the nozzle is swung upward.

[0018] As a preferred scheme of the anticorrosion coating spraying equipment for surface treatment of chemical anticorrosion tank, the inflation unit comprises an inflation part connected to the sliding column, the pivot coaxially and slidingly penetrates the inflation part, the inner cavity of the inflation part is fixedly connected with a fixed baffle, the circumferential edge of the pivot is fixedly connected with a movable baffle, the movable baffle, the fixed baffle and the inner cavity of the inflation part form a communication cavity, and the communication cavity is penetrated by the annular air bag through the air pipe.

[0019] The present application includes at least the following beneficial effects:

[0020] 1、The present application, by setting the driving adjustment unit, makes the sliding column drive the nozzle to move along the radial direction of the rotating pipe, and simultaneously drives the nozzle to rotate during the movement, so that the spraying track of the nozzle is adapted to the profile of the longitudinal section of the inner wall of the neck and shoulder of the tank body, and then the nozzle port is perpendicular to the inner wall of the neck and shoulder as much as possible, so that the spraying is more uniform.

[0021] 2. In this invention, by setting an abutment frame to abut against the inner wall of the can's inlet, and as the guide pipe moves within the can, the connecting cylinder and the rotating pipe rotate relative to each other, causing the rotating pipe to rotate. When the rotating pipe rotates, the rotating ring drives the hinge rod to swing, allowing the hinge rod to move the sliding column radially along the rotating pipe. This, in turn, causes the sliding column to move the nozzle toward the rotating pipe. As the nozzle moves, the swing arm is squeezed by the upright, causing the swing arm to rotate the nozzle, so that the nozzle opening faces the inner wall of the neck or shoulder, making the nozzle opening nearly perpendicular to the inner wall of the neck or shoulder. Furthermore, the rotation of the rotating pipe is driven by the abutment frame against the inner wall of the can, replacing the motor-driven rotation of the rotating pipe, thus adapting the rotation state of the rotating pipe to the relative motion state of the rotating pipe and the connecting cylinder.

[0022] 3. In this invention, when the pivot rotates, it drives the movable baffle to rotate, which in turn causes the movable baffle to rotate within the mounting base. This increases the internal volume of the communicating cavity, allowing air from the annular airbag to enter the communicating cavity. This causes the annular airbag to contract and the annular holes of the annular airbag to recover their deformation and expand. As a result, when the paint is sprayed out of the annular holes of the annular airbag, the flow rate decreases. This prevents the paint from rebounding and splashing on the inner wall of the neck due to excessive spraying pressure as the nozzle approaches the inner wall of the neck, thus preventing the paint from dripping and sag on the inner wall of the neck. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a three-dimensional structural diagram of an anti-corrosion coating spraying device for surface treatment of chemical anti-corrosion tanks according to the present invention;

[0025] Figure 2 for Figure 1 A diagram illustrating the positional relationships from a first-person perspective.

[0026] Figure 3 for Figure 1 A diagram illustrating the positional relationships from a second-person perspective;

[0027] Figure 4 This is a schematic diagram showing the positional relationship between the rotating tube, the abutment frame, and the mounting compartment after assembly in this invention.

[0028] Figure 5 for Figure 4 Schematic diagram of the explosive decomposition of the medium structure:

[0029] Figure 6 Fig. 1 is a schematic view of the position relation of the partial structure after being cut open in another perspective view; Figure 4 Fig. 2 is a schematic view of the position relation of the partial structure after being cut open in another perspective view;

[0030] Figure 7 Fig. 3 is a schematic view of the position relation of the partial structure after being cut open in another perspective view; Figure 6 Fig. 4 is an enlarged schematic view of the partial structure at A in Fig. 3;

[0031] Figure 8 Fig. 5 is a schematic view of the position relation of the swing arm, pivot and mounting seat after being assembled in the present application;

[0032] Figure 9 Fig. 6 is a schematic view of the position relation of the partial structure after being cut open in another perspective view; Figure 8 Fig. 7 is a schematic view of the position relation of the partial structure after being cut open in another perspective view;

[0033] Figure 10 Fig. 8 is a schematic view of the sectional structure of the chemical tank in the prior art.

[0034] Fig. 1 is a schematic view of the position relation of the partial structure after being cut open in another perspective view; DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] The embodiments of the present application disclose a kind of anticorrosive coating spraying equipment for chemical anticorrosive tank surface treatment.

[0037] Embodiment 1

[0038] Reference Figures 1-10For the first embodiment of the present application, an anticorrosion coating spraying device for chemical anticorrosion tank surface treatment is provided, which comprises a flow guide pipe 2, the peripheral edge of the flow guide pipe 2 is sleeved with two hinged bases 4, one of the hinged bases 4 is fixedly sleeved on the flow guide pipe 2, and the other hinged base 4 is slidably sleeved on the flow guide pipe 2, each of the two hinged bases 4 is hingedly connected with a supporting leg 5, the end of the supporting leg 5 away from the flow guide pipe 2 is rotationally connected with a supporting wheel, the supporting legs 5 on the two hinged bases 4 are correspondingly hingedly connected, or the two supporting legs 5 on the same side of the two hinged bases 4 are in a central hinged state, and in addition, the peripheral edge of the flow guide pipe 2 is threadedly sleeved with a rotating sleeve 3, one of the hinged bases 4 (the hinged base 4 away from the spray head 14) is rotationally connected with the rotating sleeve 3, and the rotating sleeve 3 is threadedly screwed on the flow guide pipe 2, so that the rotating sleeve 3 can drive the hinged base 4 to move, and then the two hinged bases 4 move relatively, when the two hinged bases 4 move relatively, the two adjacent supporting legs 5 will rotate along the hinge joint therebetween, and the supporting wheels will move along the radial direction of the flow guide pipe 2, so that the supporting wheels can abut against the inner wall of the tank body 1, in operation, the flow guide pipe 2 is placed in the tank body 1, and the rotating sleeve 3 is rotated, the rotating sleeve 3 is threadedly screwed on the flow guide pipe 2, and the driving force of the screwing is used to drive the hinged base 4 away from the mounting bin 7 to move towards the other hinged base 4, so that the supporting leg 5 rotates, and the supporting wheel moves away from the flow guide pipe 2, so that the supporting wheel can abut against the inner wall of the tank body 1, in this embodiment, the bottom of the tank body 1 is provided with a discharge port, and the discharge port is in an open state, so that the flow guide pipe 2 and the abutting frame 10 can be put into the tank body 1 from the discharge port;

[0039] The connecting part 6 is connected with the one end of the flow guide pipe 2, the other end of the flow guide pipe 2 is connected with the external paint delivery pump (such as airless sprayer) through the pipeline, the connecting part 6 is fixedly connected with the mounting bin 7 away from the one end of the flow guide pipe 2, the mounting bin 7 is open on one side and is provided with the cover plate 12, the cover plate 12 is rotationally connected with the rotating pipe 17, the one end of the rotating pipe 17 in the mounting bin 7 is provided with the blind hole, the blind hole is communicated with the flow guide pipe 2, so that the rotating pipe 17 is communicated with the flow guide pipe 2, the one end of the rotating pipe 17 penetrating through the cover plate 12 is fixedly connected with the protruding part, the protruding part is slidably provided with the sliding column 13, the axial direction of the sliding column 13 is perpendicular to the axial direction of the rotating pipe 17, the one end of the sliding column 13 away from the rotating pipe 17 is rotationally connected with the pivot 28, the pivot 28 is fixedly connected with the spray head 14, the spray head 14 is provided with the pipeline, the pipeline is communicated with the rotating pipe 17, so that the blind hole of the rotating pipe 17 is communicated with the spray head 14, in addition, the mounting bin 7 is provided with the motor 22, the motor 22 is drivingly connected with the driving gear 23, the rotating pipe 17 is fixedly sleeved with the driven gear 21, the driving gear 23 and the driven gear 21 are engaged, when the inner wall of the tank body 1 (the inner wall except the neck part 1a, the shoulder part 1c and the pipe opening 1a) is sprayed, the driving gear 23 is driven to rotate by the motor 22, and the driving gear 23 and the driven gear 21 are engaged to drive, so that the rotating pipe 17 can be driven to rotate, when the rotating pipe 17 rotates, the opening of the spray head 14 is opposite to the inner wall of the tank body 1 (the inner wall except the neck part 1a, the shoulder part 1c and the pipe opening 1a), and the inner wall of the tank body 1 (the inner wall except the neck part 1a, the shoulder part 1c and the pipe opening 1a) is uniformly sprayed;

[0040] The connecting cylinder 9 is coaxially and slidably sleeved with the one end of the rotating pipe 17 away from the mounting bin 7, the one end of the connecting cylinder 9 away from the rotating pipe 17 is fixedly connected with the abutting frame 10, the diameter of the abutting frame 10 is slightly larger than the inner diameter of the pipe opening 1a, so that the abutting frame 10 can abut against the inner wall of the pipe opening 1a when the flow guide pipe 2 is coaxial with the tank body 1, the one end of the rotating pipe 17 is rotationally embedded with two rolling balls 25, the inner wall of the connecting cylinder 9 is provided with the spiral rolling groove 24 for clamping and free rolling of the rolling ball 25, the connecting cylinder 9 is internally provided with the elastic element 19, the elastic element 19 elastically abuts against the end surface of the rotating pipe 17, the connecting cylinder 9 is rotationally sleeved with the rotating ring 11, the rotating ring 11 is hingedly connected with the hinge rod 8, the one end of the hinge rod 8 away from the rotating ring 11 is hingedly connected with the sliding column 13, the two ends of the pivot 28 are fixedly connected with the swing arm 15, the rotating pipe 17 is fixedly connected with the vertical rod 16, the upper end of the vertical rod 16 abuts against the downward one side of the swing arm 15, the upper end of the sliding column 13 is fixedly connected with the mounting seat 20, the pivot 28 penetrates through the mounting seat 20 and is freely rotatable, the mounting seat 20 is internally provided with the volute spring 27, the volute spring 27 is sleeved around the pivot 28, the inner ring end is fixedly connected with the pivot 28, and the outer ring end is fixedly connected with the inner cavity wall of the mounting seat 20;

[0041] The annular air bag 26 is arranged in the inner cavity of the spray head 14, the ring hole of the annular air bag 26 is coaxial with the inner cavity of the spray head 14 and communicates with the inner cavity of the spray head 14, the outer periphery of the annular air bag 26 is fixed to the inner cavity wall of the spray head 14, the inflatable part 18 is connected to the sliding column 13, specifically, the inflatable part 18 is coaxially fixedly sleeved on the end of the mounting seat 20, the pivot 28 coaxially and slidingly penetrates the inflatable part 18, the fixed baffle 29 is fixed in the inner cavity of the inflatable part 18, the movable baffle 30 is fixed to the periphery of the pivot 28, the movable baffle 30, the fixed baffle 29 and the inner cavity of the inflatable part 18 form a communication cavity 31, and the communication cavity 31 penetrates the annular air bag 26 through the air pipe.

[0042] The working principle of the embodiment is as follows:

[0043] The flow guide pipe 2 is arranged in the tank body 1, and the rotating sleeve 3 is screwed on the flow guide pipe 2, and the driving force of the screwing is used to drive one of the hinges 4 away from the mounting bin 7 to move towards the other hinge 4, so that the supporting legs 5 rotate and the supporting wheels move away from the flow guide pipe 2, so that the supporting wheels can abut against the inner wall of the tank body 1, an external metal pipe is connected to the end of the flow guide pipe 2 away from the mounting bin 7, and the metal pipe is connected to an external paint delivery pump (such as an airless sprayer), so that paint can enter the flow guide pipe 2 through the metal pipe, and the metal pipe can be driven to move by an external traction device, so that the flow guide pipe 2 moves from the bottom of the tank body 1 towards the pipe opening 1a (the bottom of the tank body 1 is provided with a discharge opening in an open state), during the movement, the external power supply is turned on, so that the motor 22 drives the driving gear 23 to rotate, and the driving gear 23 and the driven gear 21 are engaged and driven, so that the rotating pipe 17 can be driven to rotate, when the rotating pipe 17 rotates, the mouth of the spray head 14 will be directed to the inner wall of the tank body 1 (the inner wall except the neck 1a, the shoulder 1c and the pipe opening 1a), and the inner wall of the tank body 1 (the inner wall except the neck 1a, the shoulder 1c and the pipe opening 1a) is uniformly sprayed;

[0044] With the movement of the abutting frame 10, when the abutting frame 10 abuts against the inner wall of the pipe opening 1a (refer to Figure 10When the abutting frame 10 abuts against the inner wall of the pipe mouth 1a and the neck 1b, the abutting frame 10 will stop moving, and at this time, the guide pipe 2 continues to move towards the pipe mouth 1a, and the motor 22 stops rotating, and at this time, the abutting frame 10 is resisted by the inner wall of the pipe mouth 1a, and the connecting cylinder 9 is in a static state, and the ball 25 rotates in the spiral rolling groove 24, and the rotating pipe 17 rotates, and the rotating pipe 17 rotates to rotate the nozzle 14 around the rotating pipe 17, and the rotating ring 11 moves towards the installation bin 7, and the hinge rod 8 drives the sliding column 13 to move, and the nozzle 14 moves towards the rotating pipe 17, and the swing arm 15 is blocked by the vertical rod 16, and the swing arm 15 drives the pivot 28 to rotate, and the pivot 28 drives the nozzle 14 to rotate, and the volute spring 27 is in a contracted state and accumulates elastic potential energy;

[0045] When the nozzle 14 moves towards the rotating pipe 17, the mouth of the nozzle 14 swings towards the abutting frame 10, and the mouth of the nozzle 14 corresponds to the inner wall of the shoulder 1c and the neck 1b, and the mouth of the nozzle 14 is in a vertical state with the inner wall of the shoulder 1c and the neck 1b, and when the nozzle 14 starts to spray the neck 1b, the inner wall of the neck 1b is a plane, and as the guide pipe 2 moves, the horizontal distance between the nozzle 14 and the surface of the neck 1b decreases, and the paint on the inner wall of the neck 1b is easily bounced, and the paint on the inner wall of the neck 1b is splashed, and the phenomenon of sagging occurs, and when the pivot 28 rotates, the movable baffle 30 rotates, and the movable baffle 30 rotates in the installation seat 20, and the internal volume of the communication cavity 31 increases, and the air in the annular air bag 26 enters the communication cavity 31, and the annular air bag 26 contracts, and the annular hole of the annular air bag 26 restores and expands, and when the paint is sprayed from the annular hole of the annular air bag 26, the flow rate decreases, and the phenomenon of the paint on the inner wall of the neck 1b being bounced and splashed is prevented, and the phenomenon of the inner wall of the neck 1b being sagged is prevented.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A corrosion protection coating spraying apparatus for surface treatment of a chemical corrosion protection tank, characterized by, Include: The guide pipe (2) is provided with a support moving unit, and one end is connected with a connecting part (6), the connecting part (6) is fixedly connected with a mounting bin (7) away from one end of the guide pipe (2), the mounting bin (7) is open on one side and is provided with a cover plate (12), the cover plate (12) is rotatably connected with a rotating pipe (17), the rotating pipe (17) is through the guide pipe (2), the mounting bin (7) is provided with a rotating spraying unit for driving the rotating pipe (17) to rotate; The sliding column (13) is vertically and slidingly arranged in the rotating pipe (17), and the sliding column (13) is rotatably connected with a spray head (14) through a mounting pivot (28) away from one end of the rotating pipe (17), and the spray head (14) is connected with the rotating pipe (17) through a pipeline; The drive adjusting unit is arranged on the rotating pipe (17), and is used for driving the sliding column (13) to move along the radial direction of the rotating pipe (17), and driving the spray head (14) to rotate around the pivot (28) when the sliding column (13) moves; The drive adjusting unit includes a connecting cylinder (9) slidingly sleeved on the rotating pipe (17), and the connecting cylinder (9) is fixedly connected with an abutting frame (10) away from one end of the rotating pipe (17), and the connecting cylinder (9) is provided with a rotating assembly, which is used for driving the rotating pipe (17) to rotate when the connecting cylinder (9) and the rotating pipe (17) move relative to each other; The connecting cylinder (9) is rotatably sleeved with a rotating ring (11) on the circumference, the rotating ring (11) is hingedly connected with a hinge rod (8) on the circumference, the hinge rod (8) is hingedly connected with the sliding column (13) away from one end of the rotating ring (11), the pivot (28) is fixedly connected with a swing arm (15) at both ends, the rotating pipe (17) is fixedly connected with a vertical rod (16), and the upper end of the vertical rod (16) abuts against one side of the swing arm (15) downward; The spray head (14) is provided with an annular air bag (26) in the cavity, the annular hole of the annular air bag (26) is coaxial and communicated with the cavity of the spray head (14), the outer circumference of the annular air bag (26) is fixedly connected with the inner wall of the cavity of the spray head (14), and the sliding column (13) is provided with an inflating unit for inflating the annular air bag (26) when the mouth of the spray head (14) swings upward.

2. The anticorrosive coating spraying apparatus for surface treatment of a chemical anticorrosive tank according to claim 1, characterized by The support moving unit includes two hinge seats (4) sleeved on the guide pipe (2), one of the hinge seats (4) is fixedly sleeved on the guide pipe (2), the other hinge seat (4) is slidingly sleeved on the guide pipe (2), the hinge seats (4) are hingedly connected with legs (5), the legs (5) are rotatably connected with support wheels away from one end of the guide pipe (2), and the legs (5) on the two hinge seats (4) are hingedly connected.

3. The anticorrosive coating spraying apparatus for surface treatment of a chemical anticorrosive tank according to claim 2, characterized by The guide pipe (2) is rotatably sleeved with a rotating sleeve (3) on the circumference, and one of the hinge seats (4) is rotatably connected with the rotating sleeve (3).

4. The anticorrosive coating spraying apparatus for surface treatment of a chemical anticorrosive tank according to claim 1, characterized by The rotating spraying unit comprises a motor (22) mounted in a mounting bin (7), the motor (22) is drivingly connected with a driving gear (23), the rotating pipe (17) is fixedly sleeved with a driven gear (21), and the driving gear (23) and the driven gear (21) are engaged.

5. The anticorrosive coating spraying apparatus for surface treatment of a chemical anticorrosive tank according to claim 1, characterized by The upper end of the sliding column (13) is fixedly connected with a mounting seat (20), the pivot (28) penetrates through the mounting seat (20) and freely rotates, the mounting seat (20) is internally provided with a volute spring (27), the volute spring (27) is sleeved on the pivot (28), the inner ring end is fixedly connected with the pivot (28), and the outer ring end is fixedly connected with the inner cavity wall of the mounting seat (20).

6. The anticorrosive coating spraying apparatus for surface treatment of a chemical anticorrosive tank according to claim 1, characterized by The rotating assembly comprises two rolling balls (25) rotatably embedded in the periphery of one end of the rotating pipe (17), and the inner wall of the connecting barrel (9) is provided with a spiral rolling groove (24) for clamping and freely rolling the rolling ball (25).

7. The anticorrosive coating spraying apparatus for surface treatment of a chemical anticorrosive tank according to claim 6, characterized by The connecting barrel (9) is internally provided with an elastic element (19) which elastically abuts against the end face of the rotating pipe (17).

8. The anticorrosive coating spraying apparatus for surface treatment of a chemical anticorrosive tank according to claim 1, characterized by The inflating unit comprises an inflating part (18) connected with the sliding column (13), the pivot (28) coaxially and slidingly penetrates through the inflating part (18), the inflating part (18) is internally fixedly connected with a fixed baffle (29), the periphery of the pivot (28) is fixedly connected with a movable baffle (30), the movable baffle (30), the fixed baffle (29) and the inner cavity of the inflating part (18) form a communication cavity (31), and the communication cavity (31) is in communication with the annular air bag (26) through an air pipe.

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