Inner wall spraying device for enamel storage tank production

Abstract

The invention provides an inner wall spraying device for enamel storage tank production, the inner wall spraying device comprises a fixing assembly, a moving assembly and a spraying assembly which are connected in sequence, the fixing assembly comprises a connecting seat and a plurality of supporting seats, and the distance between the supporting seats and the connecting seat can be adjusted; the moving assembly comprises a first telescopic rod and is used for adjusting the distance of the spraying assembly relative to the connecting seat; the spraying assembly comprises a spraying mechanism, a rotating mechanism and an adjusting mechanism. The sprayer can rotate and spray in the circumferential direction and move in the axial direction at the same time, all spraying work is automatically completed, and efficiency and accuracy are improved. And the sprayer can be controlled to move, so that the distance between the sprayer and the first telescopic rod is adjusted. By means of the technical scheme, positioning in the axial direction and positioning in the radial direction are controlled at the same time, the sprayer keeps the most accurate and stable spraying direction in the working process, meanwhile, the spraying distance can be accurately controlled, and therefore the thickness uniformity of a sprayed enamel layer is improved to the maximum degree.

Description

Technical Field

[0001] The invention relates to the technical field of enameled storage tank production, and in particular to an inner wall spraying device used for the production of enameled storage tanks. Background Art

[0002] The development and progress of electronic technology is inseparable from high-purity hydrofluoric acid, and the filling, storage and transportation of high-purity hydrofluoric acid require professional storage tanks. Enamel storage tanks are high in strength and corrosion-resistant, and are the best storage containers for industrial-grade hydrofluoric acid.

[0003] In recent years, the spray enameling process has been widely used in the production of large-scale enameled storage tanks. The method of spray enameling to manufacture enameled storage tanks is to spray the inner liner on the inner wall of the metal storage tank to form an enameled liner inside the metal storage tank, converting it into an enameled storage tank, thereby enhancing the corrosion resistance of the tank. The glaze slurry is pressurized into a fine mist, which is manually sprayed onto the inner wall of the metal storage tank, and an enamel layer is formed after it dries. The adhesion amount and uniformity of the spray enameling are very important, which determines the thickness of the coating after drying and the anti-corrosion effect.

[0004] The current spraying process for preparing enameled storage tanks still has certain problems, that is, the nozzle is manually controlled, and the long support rod is used to penetrate deep into the tank to spray the inner wall. However, it is difficult to maintain the stability of the nozzle and the uniformity of the spraying amount in all directions and positions on the inner wall during manual control. This leads to uneven thickness of the enamel layer formed after drying, which affects the quality of the enameled storage tank and indirectly affects the safety of subsequent transportation and storage processes.

[0005] The Chinese invention patent with the publication number CN118407047A discloses a production system for the enamel liner of a chemical anti-corrosion storage tank, which relates to the field of spray enameling, including a driving shaft and an enameling nozzle, a fixed-distance extension rod is slidably provided on the side of the driving shaft, the enameling nozzle is slidably provided on the side of the fixed-distance extension rod, and a recovery component is provided on one side of the enameling nozzle. The driving shaft extends into the interior of the storage tank, and the fixed-distance extension rod on the side of the driving shaft is extended to the position of the enameling nozzle at a certain distance from the inner wall of the storage tank in different sections according to the shape of the storage tank, and the fixed-distance extension rod on the side of the driving shaft is used to extend the enameling nozzle to a position at a certain distance from the inner wall of the storage tank for fixed-distance vertical spraying, so as to ensure the best enameling adhesion effect.

[0006] Although the above technical solution can accurately control the distance between the spray nozzle and the inner wall of the tank, thereby maintaining the uniformity of the spray thickness, this solution can only adjust the distance between the nozzle and the tank, but cannot control whether the fixed-distance extension rod extends stably along the radial direction of the tank, that is, lacks stable positioning, resulting in the final spraying direction of the nozzle not being completely perpendicular to the inner wall of the tank. In this way, there will still be problems such as inconsistent spraying thickness, affecting the quality of the tank. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides an inner wall spraying device for the production of enameled storage tanks, which solves the problem in the prior art that the enameling nozzle cannot be stably and vertically directed toward the inner wall of the tank and the distance from the inner wall of the tank cannot be controlled uniformly, resulting in uneven thickness of the enamel layer formed by spraying, affecting the quality of the enameled storage tank.

[0008] According to an embodiment of the present invention, an inner wall spraying device for the production of enamel storage tanks comprises a fixed component, a movable component and a spraying component connected in sequence, wherein the fixed component comprises a connecting seat and a plurality of supporting seats arranged on the connecting seat, wherein the supporting seats are evenly distributed around the connecting seat, and the supporting seats can be adjusted at a distance relative to the connecting seat, and the distances of all the supporting seats relative to the connecting seat are the same;

[0009] The moving assembly includes a first telescopic rod, one end of which is fixedly mounted on the connecting seat, and the other end is connected to the spraying assembly, so as to adjust the distance of the spraying assembly relative to the connecting seat, and the distance from the supporting seat to the first telescopic rod is the same;

[0010] The spray assembly includes a spray mechanism, a rotating mechanism and an adjusting mechanism, wherein the spray mechanism includes a sprayer perpendicular to the first telescopic rod, the rotating mechanism drives the spray mechanism to rotate around the axis of the first telescopic rod, and the adjusting mechanism can control the movement of the sprayer to adjust the distance between the sprayer and the first telescopic rod.

[0011] Furthermore, the connecting seat is a strip-shaped columnar structure, and the supporting seat has two groups distributed front and back, and several supporting seats in each group are parallel to the connecting seat and are arranged around the central axis of the connecting seat.

[0012] Furthermore, a second telescopic rod is arranged between the connecting seat and the supporting seat, and both ends of the second telescopic rod are rotatably connected to the connecting seat and the supporting seat respectively, and the rotating surface of the second telescopic rod passes through the central axis of the connecting seat, and the rotation process of all the second telescopic rods is carried out synchronously.

[0013] Furthermore, a mounting block is provided at one end of the first telescopic rod away from the fixed component, and the spray mechanism includes a connecting pipe arranged on the side of the mounting block and a spray head arranged at one end of the connecting pipe, wherein the connecting pipe is connected to the inside of the mounting block, and the connecting pipe and the spray head are perpendicular to the first telescopic rod and face outward.

[0014] Furthermore, the connecting pipe is a telescopic pipe structure, including a fixed section and a movable section, wherein the fixed section is connected to the mounting block, and the movable section is connected to the spray head, so as to adjust the distance between the spray head and the mounting block.

[0015] Furthermore, the adjustment mechanism includes a third telescopic rod arranged in parallel on one side of the connecting tube, a support rod extending vertically from the side of the movable section of the connecting tube, one end of the third telescopic rod is fixedly connected to the mounting block, and the other end is fixedly connected to the support rod, thereby driving the telescopic movement of the movable section.

[0016] Furthermore, a distance meter is also arranged on one side of the mounting block, and the distance meter is arranged in parallel with the connecting pipe.

[0017] Furthermore, the mounting block includes a first shell and a second shell coaxially arranged front and back, the first shell and the second shell are both hollow structures, one end of the first shell is closed and connected to the first telescopic rod, the first shell is open toward one side of the second shell, the second shell is a closed structure, and one side corresponding to the first shell is rotatably connected to the first shell through an annular bearing, and the connecting pipe is connected to the second shell.

[0018] Furthermore, the rotating mechanism includes a motor arranged inside the first shell, the output shaft of the motor faces the second shell, a ring gear is provided on the end face of the second shell corresponding to one end of the motor, and the motor output shaft is provided with a driving gear, which is meshed with the ring gear, thereby driving the second shell to rotate along the central axis of the ring gear.

[0019] Furthermore, it also includes a hose, one end of which is connected to the enamel slurry storage tank, and the other end extends to the mounting block position and penetrates into the interior of the first shell; the end of the hose located inside the first shell is connected to a transfer tube, and the other end of the transfer tube is rotatably sealed and connected to the end face of the second shell, thereby guiding the hose to the interior of the second shell.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention includes three parts: a fixed component, a movable component and a spray component, wherein the fixed component includes a connecting seat and a plurality of support seats arranged on the connecting seat, wherein the support seat can extend outward to abut against the inner wall of the tank by adjusting the spacing between the connecting seat, thereby fixing the connecting seat and the entire device at the central axis position of the enamel tank, providing positioning for subsequent processing, and ensuring that the movement and spray direction of the spray component are along the radial direction of the tank. The movable component can adjust the position of the spray component along the axial direction of the tank, so that the sprayer can rotate circumferentially and spray while moving axially, automatically completing all spraying work, improving efficiency and accuracy. The spray component includes an adjusting mechanism, which can control the movement of the sprayer, thereby adjusting the spacing between the sprayer and the first telescopic rod, so that the sprayer can maintain a fixed spray distance for tanks of different sizes, obtain the optimal enamel spraying effect, and improve product quality.

[0022] The present invention controls the positioning in both the axial and radial directions at the same time, so that the sprayer maintains the most accurate and stable spraying direction during operation, and can also accurately control the spraying distance, thereby maximally improving the thickness uniformity of the sprayed enamel layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the lateral structure of an embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the structure of the spraying assembly in an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the internal structure of the installation block according to an embodiment of the present invention.

[0026] In the above drawings: 1. connecting seat; 2. supporting seat; 3. second telescopic rod; 4. first telescopic rod; 5. mounting block; 6. connecting pipe; 7. spray head; 8. third telescopic rod; 9. hose; 11. guide wheel; 51. first shell; 52. second shell; 53. motor; 54. transfer tube; 61. rangefinder; 62. support rod; 521. ring gear; 531. driving gear. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1 As shown, the embodiment of the present invention proposes an inner wall spraying device for the production of enameled tanks, comprising a fixed component, a moving component and a spraying component connected in sequence. The fixed component fixes the connecting seat 1 and the entire device at the central axis of the enameled tank to provide positioning for subsequent processing; the moving component controls the spraying component to move along the axial direction of the tank to achieve automatic spraying; and the spraying component rotates circumferentially to spray and automatically complete all spraying work.

[0029] In this embodiment, the fixing assembly includes a connection seat 1 and a plurality of support seats 2 disposed on the connection seat 1, the support seats 2 are evenly distributed around the connection seat 1, and the support seats 2 can adjust the spacing relative to the connection seat 1, and the spacing of all support seats 2 relative to the connection seat 1 is the same. Specifically, the connection seat 1 is a strip cylindrical structure, and the support seat 2 has two groups distributed front and back, and the plurality of support seats 2 in each group are parallel to the connection seat 1 and are arranged around the central axis of the connection seat 1.

[0030] In this embodiment, each group has four support seats 2, and the four support seats 2 are arranged in a cross shape around the outside of the connecting seat 1. A second telescopic rod 3 is arranged between the connecting seat 1 and the support seat 2, and the two ends of the second telescopic rod 3 are rotatably connected to the connecting seat 1 and the support seat 2 respectively, and the rotation surface of the second telescopic rod 3 passes through the central axis of the connecting seat 1, and the rotation process of all the second telescopic rods 3 is performed synchronously. It should be noted that in this embodiment, the four second telescopic rods 3 of each group are inclined toward the same side of the corresponding connecting seat 1, and the two groups of second telescopic rods 3 are inclined and extended in opposite directions, respectively, so as to expand the spacing of the support seats 2 and improve the support stability.

[0031] The moving assembly includes a first telescopic rod 4, one end of which is fixedly mounted on the connecting seat 1, and the other end is connected to the spraying assembly, so as to adjust the distance of the spraying assembly relative to the connecting seat 1, and the distance from the supporting seat 2 to the first telescopic rod 4 is the same. In this embodiment, the first telescopic rod 4 is a three-stage hydraulic telescopic structure, and more stages can be set as needed, thereby increasing the movement range of the spraying assembly along the circumferential direction.

[0032] The spraying assembly includes a spray mechanism, a rotating mechanism and an adjusting mechanism, wherein the spray mechanism includes a sprayer perpendicular to the first telescopic rod 4, the rotating mechanism drives the spray mechanism to rotate around the axis of the first telescopic rod 4, and the adjusting mechanism can control the movement of the sprayer to adjust the distance between the sprayer and the first telescopic rod 4.

[0033] In a further solution, a mounting block 5 is provided at one end of the first telescopic rod 4 away from the fixed assembly, and the spray mechanism includes a connecting pipe 6 provided on the side of the mounting block 5 and a spray head 7 provided at one end of the connecting pipe 6, wherein the connecting pipe 6 is connected to the inside of the mounting block 5, and the connecting pipe 6 and the spray head 7 are perpendicular to the first telescopic rod 4 and face outward. That is, when the first telescopic rod 4 is located in the axial direction of the storage tank, the connecting pipe 6 and the spray head 7 are located in the radial direction of the storage tank, and the spraying direction of the spray head 7 can be perpendicular to the inner wall of the storage tank to maintain spraying uniformity.

[0034] like Figure 2 As shown, preferably, the connecting pipe 6 is a telescopic pipe structure, including a fixed section and a movable section, wherein the fixed section is connected to the mounting block 5, and the movable section is connected to the spray head 7, so as to adjust the distance between the spray head 7 and the mounting block 5. Correspondingly, the adjustment mechanism includes a third telescopic rod 8 arranged in parallel on one side of the connecting pipe 6, and a support rod 62 extends vertically from the side of the movable section of the connecting pipe 6, and one end of the third telescopic rod 8 is fixedly connected to the mounting block 5, and the other end is fixedly connected to the support rod 62, so as to drive the telescopic movement of the movable section. In this embodiment, there are two support rods 62 and the third telescopic rod 8 symmetrically arranged on both sides of the connecting pipe 6. When the two third telescopic rods 8 are operated at the same time, the movable section and the spray head 7 can be driven to move radially along the tank at the same time to adjust the distance between the inner wall of the tank.

[0035] As a match, a rangefinder 61 is also provided on one side of the mounting block 5, and the rangefinder 61 is arranged in parallel with the connecting pipe 6. In this embodiment, the rangefinder 61 adopts an infrared rangefinder 61 in the prior art, which is not described here. By detecting the distance between the rangefinder 61 and the inner wall of the storage tank, the distance between the spray head 7 and the inner wall of the storage tank can be accurately adjusted, and enamel storage tanks of different sizes can be processed.

[0036] like Figure 3 As shown, in a preferred solution, the mounting block 5 includes a first shell 51 and a second shell 52 coaxially arranged front and back, the first shell 51 and the second shell 52 are both hollow structures, one end of the first shell 51 is closed and connected to the first telescopic rod 4, the first shell 51 is open toward the second shell 52, the second shell 52 is a closed structure, one side of the first shell 51 corresponding to the first shell 51 is rotatably connected to the first shell 51 through an annular bearing, and the connecting pipe 6 is connected to the second shell 52. Therefore, the first shell 51 can only move axially with the first telescopic rod 4, while the second shell 52 rotates relative to the first shell 51, realizing the axial rotation function of the connecting pipe 6 and the spray head 7.

[0037] The rotating mechanism includes a motor 53 disposed inside the first housing 51, the output shaft of the motor 53 faces the second housing 52, a ring gear 521 is provided on the end surface of the second housing 52 corresponding to one end of the motor 53, and a driving gear 531 is provided on the output shaft of the motor 53, and the driving gear 531 is meshed with the ring gear 521, thereby driving the second housing 52 to rotate along the central axis of the ring gear 521. In this embodiment, the driving gear 531 is a bevel gear, and the inner edge of the ring gear 521 is an annular conical surface, thereby forming a meshing connection with the driving gear 531.

[0038] Furthermore, the present embodiment also includes a hose 9, one end of which is connected to the enamel slurry storage tank (not shown), and the other end extends to the position of the mounting block 5 and penetrates into the first shell 51. As a match, a guide wheel 11 is provided on the connecting seat 1 to guide the movement of the hose 9, so that it remains relatively taut and does not touch the inner wall of the enamel storage tank to affect the spraying work. The end of the hose 9 located inside the first shell 51 is connected to a transfer tube 54, and the other end of the transfer tube 54 is rotatably sealed and connected to the end face of the second shell 52, thereby conducting the hose 9 to the inside of the second shell 52. Therefore, the hose 9 and the transfer tube 54 remain relatively fixed with the second shell 52 and do not rotate, and the first shell 51 is rotatably connected with the second shell 52 and the transfer tube 54, while maintaining its rotation ability.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An inner wall spraying device for the production of enamel storage tanks, characterized in that: It comprises a fixed component, a movable component and a spraying component connected in sequence, wherein the fixed component comprises a connecting seat and a plurality of supporting seats arranged on the connecting seat, wherein the supporting seats are evenly distributed around the connecting seat, and the spacing of the supporting seats relative to the connecting seat can be adjusted, and the spacing of all the supporting seats relative to the connecting seat is the same; The moving assembly includes a first telescopic rod, one end of which is fixedly mounted on the connecting seat, and the other end is connected to the spraying assembly, so as to adjust the distance of the spraying assembly relative to the connecting seat, and the distance from the supporting seat to the first telescopic rod is the same; The spray assembly includes a spray mechanism, a rotating mechanism and an adjusting mechanism, wherein the spray mechanism includes a sprayer perpendicular to the first telescopic rod, the rotating mechanism drives the spray mechanism to rotate around the axis of the first telescopic rod, and the adjusting mechanism can control the movement of the sprayer to adjust the distance between the sprayer and the first telescopic rod.

2. The inner wall spraying device for the production of enamel storage tanks according to claim 1, characterized in that: The connecting seat is a strip-shaped columnar structure, and the supporting seat has two groups distributed front and back, and several supporting seats in each group are parallel to the connecting seat and are arranged around the central axis of the connecting seat.

3. The inner wall spraying device for the production of enamel storage tanks according to claim 2, characterized in that: A second telescopic rod is arranged between the connecting seat and the supporting seat, and the two ends of the second telescopic rod are rotatably connected to the connecting seat and the supporting seat respectively, and the rotating surface of the second telescopic rod passes through the central axis of the connecting seat, and the rotation process of all the second telescopic rods is carried out synchronously.

4. The inner wall spraying device for the production of enamel storage tanks according to claim 1, characterized in that: A mounting block is provided at one end of the first telescopic rod away from the fixed assembly, and the spray mechanism includes a connecting pipe arranged on the side of the mounting block and a spray head arranged at one end of the connecting pipe, wherein the connecting pipe is connected to the inside of the mounting block, and the connecting pipe and the spray head are perpendicular to the first telescopic rod and face outward.

5. The inner wall spraying device for the production of enamel storage tanks according to claim 4, characterized in that: The connecting pipe is a telescopic pipe structure, comprising a fixed section and a movable section, wherein the fixed section is connected to the mounting block, and the movable section is connected to the spray head, so as to adjust the distance between the spray head and the mounting block.

6. The inner wall spraying device for the production of enameled storage tanks according to claim 5, characterized in that: The adjustment mechanism includes a third telescopic rod arranged in parallel on one side of the connecting pipe, a support rod extends vertically from the side of the movable section of the connecting pipe, one end of the third telescopic rod is fixedly connected to the mounting block, and the other end is fixedly connected to the support rod, thereby driving the telescopic movement of the movable section.

7. The inner wall spraying device for the production of enameled storage tanks according to claim 5, characterized in that: A distance meter is also arranged on one side of the installation block, and the distance meter is arranged in parallel with the connecting pipe.

8. The inner wall spraying device for the production of enamel storage tanks according to claim 4, characterized in that: The mounting block includes a first shell and a second shell coaxially arranged front and back, the first shell and the second shell are both hollow structures, one end of the first shell is closed and connected to the first telescopic rod, the first shell is open toward one side of the second shell, the second shell is a closed structure, and one side corresponding to the first shell is rotatably connected to the first shell through an annular bearing, and the connecting pipe is connected to the second shell.

9. The inner wall spraying device for the production of enameled storage tanks according to claim 8, characterized in that: The rotating mechanism includes a motor arranged inside the first shell, the output shaft of the motor faces the second shell, a ring gear is provided on the end face of the second shell corresponding to one end of the motor, and the motor output shaft is provided with a driving gear, which is meshed with the ring gear, thereby driving the second shell to rotate along the central axis of the ring gear.

10. The inner wall spraying device for the production of enameled storage tanks according to claim 8, characterized in that: It also includes a hose, one end of which is connected to the enamel slurry storage tank, and the other end extends to the mounting block position and penetrates into the first shell; the end of the hose located inside the first shell is connected to a transfer tube, and the other end of the transfer tube is rotatably sealed and connected to the end face of the second shell, thereby guiding the hose to the inside of the second shell.

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