Automatic lead-enamelling device for pressure vessels

Abstract

The present invention discloses an automatic lead-enameling device for pressure vessels, which belongs to the technical field of lead-enameling of vessels, and comprises a main mechanism for driving the pressure vessel to circulate between various stations, wherein the main mechanism is provided with a pick-and-place mechanism for placing and removing the pressure vessel and a processing mechanism for lead-enameling the pressure vessel; the present invention adopts a conveyor belt in conjunction with the collaborative operation of multiple stations to realize automatic loading, transportation, spraying, heating and cooling of the pressure vessel, greatly reducing manual intervention, and a motor drives the conveyor belt to run at a uniform speed, so that the container is seamlessly connected between various stations, significantly improving the lead-enameling efficiency, and being suitable for batch production needs; the present invention drives the pressure vessel to rotate at a uniform speed by a hoisting module through the meshing transmission of a self-rotating gear and a fixed rack, and realizes uniform spraying of lead powder in conjunction with an inclined lead spraying pipe nozzle, and the flame gun adopts a bidirectional screw rod to drive the lifting and lowering to ensure uniform heating temperature distribution, combined with rapid cooling with liquid nitrogen, so that the lead layer is dense and has strong adhesion.

Description

Technical Field

[0001] The invention relates to the technical field of container lead-enameling, in particular to an automatic lead-enameling device for pressure containers. Background Art

[0002] In the chemical, energy, and pharmaceutical industries, the outer wall lead-enameling process for pressure vessels is primarily used to enhance their corrosion resistance, high-temperature resistance, and mechanical strength. Traditional outer wall lead-enameling processes are typically performed manually or semi-automatically, primarily involving steps such as lead powder spraying, flame cladding, and cooling and curing. However, existing technologies present the following challenges: Traditional methods rely on workers to manually spray lead powder and control flame heating, resulting in high labor intensity, low production efficiency, and difficulty adapting to large-scale production needs; Manual spraying makes it difficult to ensure uniform distribution of lead powder on the outer wall, and unstable temperature control during flame heating can easily lead to uneven lead layer thickness, localized flaking, or inadequate cladding, compromising the corrosion protection effect; Lead powder easily diffuses during the spraying process, endangering worker health; Improper operation of the high-temperature flame and liquid nitrogen cooling stages can cause burns, frostbite, or thermal stress damage to the container; Traditional equipment lacks an effective lead powder recovery system, resulting in the scattering of unattached lead powder, polluting the environment and increasing production costs; Existing automated equipment often utilizes fixed workstations or a single robotic arm, resulting in imprecise container transfer and rotation control, leading to unstable spraying and heating effects. Therefore, there is an urgent need to develop a fully automatic outer wall lead enameling device that can achieve efficient transfer, precise spraying, uniform heating and rapid cooling, so as to improve production efficiency, ensure the quality of lead enameling and reduce safety risks. Summary of the Invention

[0003] In response to the above technical problems, the present invention adopts a technical solution: an automatic lead-enameling device for pressure vessels, comprising a main mechanism for driving the pressure vessels to circulate between various workstations, the main mechanism comprising a housing, and provided with a placing and retrieving mechanism for placing and removing the pressure vessels and a processing mechanism for lead-enameling the pressure vessels;

[0004] The main body mechanism comprises a rotating column and a transmission column rotatably mounted in the shell, and a fixed rack is fixedly mounted in the shell.

[0005] Furthermore, the main mechanism also includes two conveying wheels rotatably installed in the outer shell, a conveyor belt is wrapped around the two conveying wheels, the conveyor belt slides on the outer shell, a motor is fixedly installed in the outer shell, a rotating gear and a uniform gear are rotatably installed on the outer shell, the motor drives the rotating column and the transmission column to rotate through the belt transmission, the rotating column drives the uniform gear to rotate through the belt transmission, the rotating column drives the conveying wheels to rotate through the gear transmission, and the motor drives the rotating gear to rotate through the belt transmission and the gear transmission.

[0006] Furthermore, a plurality of lifting modules are fixedly installed under the conveyor belt, and the lifting modules include a connecting seat fixedly installed under the conveyor belt, a plurality of upper wheels and two side wheels are rotatably installed on the connecting seat, and the upper wheels and side wheels roll along the outer shell, a self-rotating gear is rotatably installed under the connecting seat, and three ceramic hooks are rotatably installed under the self-rotating gear.

[0007] Furthermore, an iron core is provided in the ceramic hook.

[0008] The motor drives the rotating column and the transmission column to rotate through the belt drive, and the rotating column drives the uniform gear to rotate through the belt drive. The motor drives the rotating gear to rotate through the belt drive and the gear drive. The rotating column drives the conveyor wheel to rotate slowly through the gear drive, thereby driving the conveyor belt to move slowly, and thus driving the lifting module to move slowly. The upper wheel and side wheels are used to reduce the friction when the lifting module moves.

[0009] Furthermore, the picking and placing mechanism includes an inlet and outlet slope block fixedly mounted on the outer shell, a lower pressure plate is slidably mounted on the inlet and outlet slope block, a lower pressure spring is arranged between the lower pressure plate and the inlet and outlet slope block, two electromagnets are arranged in the outer shell, and a lifting plate is slidably mounted on the outer shell.

[0010] Furthermore, a docking electric cylinder is fixedly installed in the shell, a docking head is rotatably installed on the output end of the docking electric cylinder, the docking head is slidably installed on the bottom of the rotating column, and an insertion head is rotatably installed in the shell. When the docking electric cylinder is extended, the insertion head is inserted into the docking head, so that the rotating column drives the insertion head to rotate.

[0011] Furthermore, a slide rail is fixedly installed in the shell, a rack block is slidably installed on the slide rail, a docking gear is rotatably installed on the slide rail, the docking gear is meshed with the rack block, a bottom rotating rod is rotatably installed on the rack block, the bottom rotating rod is rotatably installed with the lifting plate, and the insertion head drives the docking gear to rotate through gear transmission and belt transmission.

[0012] When loading, the operator or forklift arrives at the lower pressure plate and places the pressure vessel on the lifting plate, driving the lower pressure plate to move downward, the lower pressure spring is compressed, and the docking electric cylinder is controlled to extend, driving the docking head to descend, so that the insertion head is inserted into the docking head. At this time, the rotation of the rotating column drives the insertion head to rotate, and the docking gear is driven to rotate through the gear transmission and the belt transmission, thereby driving the rack block to slide along the slide rail, thereby driving the lifting plate to rise through the bottom rotating rod, thereby driving the pressure vessel on the lifting plate to rise. After the lifting ring of the lifting plate contacts the ceramic hook, it pushes the ceramic hook to rotate outward. When the lifting ring of the pressure vessel completely pushes the ceramic hook out, the ceramic hook rotates back under the action of gravity, and the ceramic hook hooks the pressure vessel through the lifting ring. The docking electric cylinder is controlled to retract, so that the docking head is separated from the insertion head, and the lifting plate drops and resets under the action of gravity. Then the personnel leave the lower pressure plate, and the lower pressure spring rebounds to drive the lower pressure plate to reset. Since the speed of the lower pressure spring movement is much smaller than the speed of rotation of the docking gear, the pressure vessel has enough time to be lifted by the ceramic hook.

[0013] When unloading, the operator or forklift reaches the lower pressure plate, the lower pressure plate moves downward, and the lower pressure spring is compressed. At this time, the docking electric cylinder is controlled to extend, driving the lifting plate to rise. The lifting plate lifts the pressure vessel on the ceramic hook. At this time, the electromagnet is energized to adsorb the ceramic hook, and then the docking electric cylinder is controlled to contract, so that the docking head and the insertion head are separated. Under the action of gravity, the lifting plate descends and resets with the pressure vessel. Then the personnel leave the lower pressure plate with the pressure vessel, and the lower pressure spring rebounds to drive the lower pressure plate to reset.

[0014] Furthermore, the processing mechanism includes a lead spraying pipe fixedly mounted on the outer shell, a plurality of nozzles being provided on the lead spraying pipe, the nozzles being arranged at equal intervals along the inclined lead spraying pipe, a collecting box being fixedly mounted on the outer shell, the collecting box being located below the lead spraying pipe, a plurality of fans being provided on the collecting box, and a collecting cover being rotatably mounted on the collecting box.

[0015] Furthermore, a heating tube is fixedly installed in the shell, a bidirectional screw is rotatably installed in the shell, a lifting seat is slidably installed in the shell, a flame gun is fixedly installed on the lifting seat, the lifting seat and the bidirectional screw form a threaded transmission, the transmission column drives the bidirectional screw to rotate through a belt transmission, and a liquid nitrogen tube is fixedly installed on the shell.

[0016] When the pressure vessel is lifted by the lifting module, the conveyor belt first moves the lifting module to the lead spraying pipe. At this time, the self-rotating gear starts to engage with the fixed rack. When the connecting seat follows the movement of the conveyor belt, the self-rotating gear and the ceramic hook rotate with the pressure vessel. Lead powder is supplied by the lead spraying pipe and sprayed through the nozzle on the lead spraying pipe, so that the lead powder adheres to the pressure vessel. The fan on the collection box draws air and recovers the lead powder that has not adhered and fallen into the collection box. Then the pressure vessel passes through the heating tube, flame gun and liquid nitrogen tube in sequence. The heating tube preheats the pressure vessel to facilitate subsequent flame heating and reduce the insufficient melting of lead powder caused by the temperature difference between the inside and outside of the pressure vessel, thereby ensuring the lead lining effect of the pressure vessel. The rotation of the transmission column drives the rotation of the bidirectional screw, thereby driving the lifting seat and flame gun to continuously rise and fall. The high-temperature flame sprayed by the flame gun burns and heats the pressure vessel, causing the lead powder to quickly melt and adhere to the pressure vessel. Then the pressure vessel moves to the liquid nitrogen tube, and liquid nitrogen is sprayed through the liquid nitrogen tube to quickly cool the pressure vessel, completing the lead lining of the pressure vessel.

[0017] Compared with the prior art, the present invention has the following advantages: (1) the present invention adopts a conveyor belt in conjunction with multiple stations to realize automatic loading, transportation, spraying, heating and cooling of pressure vessels, which greatly reduces manual intervention. The motor drives the conveyor belt to run at a uniform speed, so that the container is seamlessly connected between each station, significantly improving the efficiency of lead plating, and is suitable for batch production needs; (2) the present invention uses the meshing transmission of the self-rotating gear and the fixed rack to drive the lifting module to drive the pressure vessel to rotate at a uniform speed, and cooperates with the inclined lead spraying pipe nozzle to achieve uniform spraying of lead powder. The flame gun adopts a two-way screw drive to ensure uniform heating temperature distribution. Combined with liquid nitrogen rapid cooling, the lead layer is dense and has strong adhesion, avoiding the problems of uneven thickness or insufficient cladding in traditional processes; (3) a collection box and a fan are arranged under the lead spraying pipe set in the present invention, which can efficiently recover the unattached lead powder and recycle it, reducing material loss. At the same time, the precisely controlled spraying and heating system reduces excessive use of lead powder, further optimizes production costs, and meets the requirements of green manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention (interior).

[0020] Figure 3 Schematic diagram of the main structure of the present invention Figure 1 .

[0021] Figure 4 Schematic diagram of the main structure of the present invention Figure 2 .

[0022] Figure 5Schematic diagram of the main structure of the present invention Figure 3 .

[0023] Figure 6 This is a structural diagram of the lifting module of the present invention.

[0024] Figure 7 Schematic diagram of the pick-and-place mechanism structure of the present invention Figure 1 .

[0025] Figure 8 Schematic diagram of the pick-and-place mechanism structure of the present invention Figure 2 .

[0026] Figure 9 Schematic diagram of the processing mechanism structure of the present invention Figure 1 .

[0027] Figure 10 Schematic diagram of the processing mechanism structure of the present invention Figure 2 .

[0028] Reference numerals: 101-housing; 102-conveying wheel; 103-conveying belt; 104-motor; 105-rotating column; 106-rotating gear; 107-fixed rack; 108-connecting seat; 109-upper wheel; 110-side wheel; 111-rotating gear; 112-ceramic hook; 113-uniform gear; 114-transmission column; 201-in and out ramp block; 202-lower pressure plate; 203-lower pressure spring; 2 04-lifting plate; 205-docking electric cylinder; 206-docking joint; 207-insertion head; 208-electromagnet; 209-rack block; 210-slide rail; 211-docking gear; 212-bottom rotating rod; 301-bidirectional screw rod; 302-lifting seat; 303-flame gun; 304-heating tube; 305-liquid nitrogen tube; 306-lead spraying tube; 307-collection box; 308-collection cover; 4-pressure vessel. DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0030] Example: Reference Figures 1-10 An automatic lead-enameling device for a pressure vessel includes a main body mechanism for driving a pressure vessel 4 to circulate between various workstations. The main body mechanism includes a housing 101 and is provided with a placing and receiving mechanism for placing and removing the pressure vessel 4 and a processing mechanism for lead-enameling the pressure vessel 4.

[0031] The main mechanism includes a rotating column 105 and a transmission column 114 rotatably mounted in the housing 101 , and a fixed rack 107 is fixedly mounted in the housing 101 .

[0032] like Figure 3-Figure 6As shown, the main mechanism also includes two conveying wheels 102 rotatably installed in the shell 101, and a conveyor belt 103 is wrapped around the two conveying wheels 102. The conveyor belt 103 slides on the shell 101. A motor 104 is fixedly installed in the shell 101, and a rotating gear 106 and a uniform gear 113 are rotatably installed on the shell 101. The motor 104 drives the rotating column 105 and the transmission column 114 to rotate through the belt transmission, and the rotating column 105 drives the uniform gear 113 to rotate through the belt transmission. The rotating column 105 drives the conveying wheels 102 to rotate through the gear transmission, and the motor 104 drives the rotating gear 106 to rotate through the belt transmission and the gear transmission.

[0033] like Figure 3-Figure 6 As shown, a plurality of lifting modules are fixedly installed below the conveyor belt 103, and the lifting modules include a connecting seat 108 fixedly installed below the conveyor belt 103, a plurality of upper wheels 109 and two side wheels 110 are rotatably installed on the connecting seat 108, and the upper wheels 109 and the side wheels 110 roll along the outer shell 101, and a self-rotating gear 111 is rotatably installed below the connecting seat 108, and three ceramic hooks 112 are rotatably installed below the self-rotating gear 111.

[0034] like Figure 3-Figure 6 As shown, an iron core is provided in the ceramic hook 112 .

[0035] The motor 104 drives the rotating column 105 and the transmission column 114 to rotate through the belt transmission, and the rotating column 105 drives the uniform gear 113 to rotate through the belt transmission. The motor 104 drives the rotating gear 106 to rotate through the belt transmission and the gear transmission. The rotating column 105 drives the conveying wheel 102 to rotate slowly through the gear transmission, thereby driving the conveyor belt 103 to move slowly, and thus driving the lifting module to move slowly. The upper wheel 109 and the side wheel 110 are used to reduce the friction when the lifting module moves.

[0036] like Figure 7 、 Figure 8 As shown, the picking and placing mechanism includes an inlet and outlet ramp block 201 fixedly mounted on the outer shell 101, a lower pressure plate 202 is slidably mounted on the inlet and outlet ramp block 201, a lower pressure spring 203 is arranged between the lower pressure plate 202 and the inlet and outlet ramp block 201, two electromagnets 208 are arranged in the outer shell 101, and a lifting plate 204 is slidably mounted on the outer shell 101.

[0037] like Figure 7 、 Figure 8 As shown, a docking electric cylinder 205 is fixedly installed in the housing 101, and a docking head 206 is rotatably installed on the output end of the docking electric cylinder 205. The docking head 206 is slidably installed on the bottom of the rotating column 105. An insertion head 207 is rotatably installed in the housing 101. When the docking electric cylinder 205 is extended, the insertion head 207 is inserted into the docking head 206, so that the rotating column 105 drives the insertion head 207 to rotate.

[0038] like Figure 7 、 Figure 8 As shown, a slide rail 210 is fixedly installed in the housing 101, a rack block 209 is slidably installed on the slide rail 210, a docking gear 211 is rotatably installed on the slide rail 210, the docking gear 211 is engaged with the rack block 209, a bottom rotating rod 212 is rotatably installed on the rack block 209, the bottom rotating rod 212 is rotatably installed with the lifting plate 204, and the insertion head 207 drives the docking gear 211 to rotate through gear transmission and belt transmission.

[0039] During the loading operation, the operator or forklift arrives at the lower pressure plate 202, places the pressure vessel 4 on the lifting plate 204, drives the lower pressure plate 202 to move downward, and the downward pressure spring 203 is compressed. At this time, the docking electric cylinder 205 is controlled to extend, driving the docking head 206 to descend, so that the insertion head 207 is inserted into the docking head 206. At this time, the rotating column 105 rotates to drive the insertion head 207 to rotate, and the docking gear 211 is driven to rotate through the gear transmission and belt transmission, thereby driving the rack block 209 to slide along the slide rail 210, thereby driving the lifting plate 204 to rise through the bottom rotating rod 212, thereby driving the pressure vessel 4 on the lifting plate 204 to rise, and the lifting plate 204 is lifted. After the ring contacts the ceramic hook 112, it pushes the ceramic hook 112 to rotate outward. When the lifting ring of the pressure vessel 4 completely pushes the ceramic hook 112 out, the ceramic hook 112 rotates back under the action of gravity. The ceramic hook 112 hooks the pressure vessel 4 through the lifting ring, and controls the docking electric cylinder 205 to contract, so that the docking head 206 is separated from the insertion head 207. The lifting plate 204 drops and resets under the action of gravity. Then the personnel leave the lower pressure plate 202, and the lower pressure spring 203 rebounds to drive the lower pressure plate 202 to reset. Since the speed of the lower pressure spring 203 is much smaller than the speed of rotation of the docking gear 211, the pressure vessel 4 has enough time to be lifted by the ceramic hook 112.

[0040] When unloading, the operator or forklift arrives at the lower pressure plate 202, the lower pressure plate 202 moves downward, and the lower pressure spring 203 is compressed. At this time, the docking electric cylinder 205 is controlled to extend, driving the lifting plate 204 to rise, and the lifting plate 204 lifts the pressure vessel 4 on the ceramic hook 112. At this time, the electromagnet 208 is energized to adsorb the ceramic hook 112, and then the docking electric cylinder 205 is controlled to contract, so that the docking head 206 is separated from the insertion head 207. Under the action of gravity, the lifting plate 204 descends and resets with the pressure vessel 4. Then the personnel leave the lower pressure plate 202 with the pressure vessel 4, and the lower pressure spring 203 rebounds to drive the lower pressure plate 202 to reset.

[0041] like Figure 9 、 Figure 10As shown, the processing mechanism includes a lead spraying pipe 306 fixedly mounted on the outer shell 101, and a plurality of nozzles are provided on the lead spraying pipe 306, and the nozzles are arranged at equal intervals along the inclined lead spraying pipe 306. A collecting box 307 is fixedly mounted on the outer shell 101, and the collecting box 307 is located below the lead spraying pipe 306. A plurality of fans are provided on the collecting box 307, and a collecting cover 308 is rotatably mounted on the collecting box 307.

[0042] like Figure 9 、 Figure 10 As shown, a heating tube 304 is fixedly installed in the shell 101, a bidirectional screw 301 is rotatably installed in the shell 101, a lifting seat 302 is slidably installed in the shell 101, a flame gun 303 is fixedly installed on the lifting seat 302, the lifting seat 302 and the bidirectional screw 301 form a threaded transmission, the transmission column 114 drives the bidirectional screw 301 to rotate through a belt transmission, and a liquid nitrogen tube 305 is fixedly installed on the shell 101.

[0043] When the pressure vessel 4 is lifted by the lifting module, the conveyor belt 103 first moves with the lifting module to the lead spraying pipe 306. At this time, the self-rotating gear 111 starts to engage with the fixed rack 107. When the connecting seat 108 moves with the conveyor belt 103, the self-rotating gear 111 and the ceramic hook 112 rotate together with the pressure vessel 4. The lead powder supplied by the lead spraying pipe 306 is sprayed out through the nozzle on the lead spraying pipe 306, so that the lead powder adheres to the pressure vessel 4. The fan on the collection box 307 draws air and recovers the lead powder that has not adhered and fallen into the collection box 307. Then the pressure vessel 4 passes through the heating pipe 304, the flame gun 303 and the liquid nitrogen pipe 306 in sequence. 05. The heating tube 304 preheats the pressure vessel 4 to facilitate subsequent flame heating and reduce the insufficient melting of the lead powder caused by the temperature difference between the inside and outside of the pressure vessel 4, thereby ensuring the lead-plating effect of the pressure vessel 4. The transmission column 114 rotates to drive the bidirectional screw 301 to rotate, thereby driving the lifting seat 302 and the flame gun 303 to continuously rise and fall. The flame gun 303 sprays a high-temperature flame to burn and heat the pressure vessel 4, so that the lead powder quickly melts and adheres to the pressure vessel 4. Then the pressure vessel 4 moves to the liquid nitrogen pipe 305, and liquid nitrogen is sprayed through the liquid nitrogen pipe 305 to quickly cool the pressure vessel 4, completing the lead-plating of the pressure vessel 4.

[0044] The working principle of an automatic lead-plating device for pressure vessels disclosed in the present invention is as follows: the motor 104 drives the rotating column 105 and the transmission column 114 to rotate through the belt transmission, the rotating column 105 drives the uniform gear 113 to rotate through the belt transmission, the motor 104 drives the rotating gear 106 to rotate through the belt transmission and the gear transmission, the rotating column 105 drives the conveying wheel 102 to rotate slowly through the gear transmission, thereby driving the conveyor belt 103 to move slowly, thereby driving the lifting module to move slowly, and the upper wheel 109 and the side wheel 110 are used to reduce the friction when the lifting module moves. During the loading operation, the operator or forklift arrives at the lower pressure plate 202, places the pressure vessel 4 on the lifting plate 204, drives the lower pressure plate 202 to move downward, and the downward pressure spring 203 is compressed. At this time, the docking electric cylinder 205 is controlled to extend, driving the docking head 206 to descend, so that the insertion head 207 is inserted into the docking head 206. At this time, the rotating column 105 rotates to drive the insertion head 207 to rotate, and the docking gear 211 is driven to rotate through the gear transmission and belt transmission, thereby driving the rack block 209 to slide along the slide rail 210, thereby driving the lifting plate 204 to rise through the bottom rotating rod 212, thereby driving the pressure vessel 4 on the lifting plate 204 to rise, and the lifting plate 204 is lifted. After the ring contacts the ceramic hook 112, it pushes the ceramic hook 112 to rotate outward. When the lifting ring of the pressure vessel 4 completely pushes the ceramic hook 112 out, the ceramic hook 112 rotates back under the action of gravity. The ceramic hook 112 hooks the pressure vessel 4 through the lifting ring, and controls the docking electric cylinder 205 to contract, so that the docking head 206 is separated from the insertion head 207. The lifting plate 204 drops and resets under the action of gravity. Then the personnel leave the lower pressure plate 202, and the lower pressure spring 203 rebounds to drive the lower pressure plate 202 to reset. Since the speed of the lower pressure spring 203 is much smaller than the speed of rotation of the docking gear 211, the pressure vessel 4 has enough time to be lifted by the ceramic hook 112.When the pressure vessel 4 is lifted by the lifting module, the conveyor belt 103 first moves with the lifting module to the lead spraying pipe 306. At this time, the self-rotating gear 111 starts to engage with the fixed rack 107. When the connecting seat 108 moves with the conveyor belt 103, the self-rotating gear 111 and the ceramic hook 112 rotate together with the pressure vessel 4. The lead powder supplied by the lead spraying pipe 306 is sprayed out through the nozzle on the lead spraying pipe 306, so that the lead powder adheres to the pressure vessel 4. The fan on the collection box 307 draws air and recovers the lead powder that has not adhered and fallen into the collection box 307. Then the pressure vessel 4 passes through the heating pipe 304, the flame gun 303 and the liquid nitrogen pipe 306 in sequence. 05. The heating tube 304 preheats the pressure vessel 4 to facilitate subsequent flame heating and reduce the insufficient melting of the lead powder caused by the temperature difference between the inside and outside of the pressure vessel 4, thereby ensuring the lead-plating effect of the pressure vessel 4. The transmission column 114 rotates to drive the bidirectional screw 301 to rotate, thereby driving the lifting seat 302 and the flame gun 303 to continuously rise and fall. The flame gun 303 sprays a high-temperature flame to burn and heat the pressure vessel 4, so that the lead powder quickly melts and adheres to the pressure vessel 4. Then the pressure vessel 4 moves to the liquid nitrogen pipe 305, and liquid nitrogen is sprayed through the liquid nitrogen pipe 305 to quickly cool the pressure vessel 4, completing the lead-plating of the pressure vessel 4. When unloading, the operator or forklift arrives at the lower pressure plate 202, the lower pressure plate 202 moves downward, and the lower pressure spring 203 is compressed. At this time, the docking electric cylinder 205 is controlled to extend, driving the lifting plate 204 to rise, and the lifting plate 204 lifts the pressure vessel 4 on the ceramic hook 112. At this time, the electromagnet 208 is energized to adsorb the ceramic hook 112, and then the docking electric cylinder 205 is controlled to contract, so that the docking head 206 is separated from the insertion head 207. Under the action of gravity, the lifting plate 204 descends and resets with the pressure vessel 4. Then the personnel leave the lower pressure plate 202 with the pressure vessel 4, and the lower pressure spring 203 rebounds to drive the lower pressure plate 202 to reset.

[0045] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. An automatic lead-enamelling device for pressure vessels, comprising a main body mechanism for driving the pressure vessel (4) to circulate between various stations, characterized in that: The main body mechanism comprises a housing (101), and the main body mechanism is provided with a placement mechanism for placing and removing the pressure vessel (4) and a processing mechanism for performing lead enamelling on the pressure vessel (4); The main body mechanism comprises a rotating column (105) and a transmission column (114) rotatably mounted in the housing (101), and a fixed rack (107) is fixedly mounted in the housing (101); The pick-and-place mechanism comprises an inlet and outlet slope block (201) fixedly mounted on the housing (101), a lower pressure plate (202) slidably mounted on the inlet and outlet slope block (201), a lower pressure spring (203) provided between the lower pressure plate (202) and the inlet and outlet slope block (201), two electromagnets (208) provided in the housing (101), and a lifting plate (204) slidably mounted on the housing (101); A docking electric cylinder (205) is fixedly installed in the housing (101), a docking head (206) is rotatably installed on the output end of the docking electric cylinder (205), the docking head (206) is slidably installed on the bottom of the rotating column (105), and an insertion head (207) is rotatably installed in the housing (101). When the docking electric cylinder (205) is extended, the insertion head (207) is inserted into the docking head (206), so that the rotating column (105) drives the insertion head (207) to rotate; A slide rail (210) is fixedly installed in the housing (101), a rack block (209) is slidably installed on the slide rail (210), a docking gear (211) is rotatably installed on the slide rail (210), the docking gear (211) is meshed with the rack block (209), a bottom rotating rod (212) is rotatably installed on the rack block (209), the bottom rotating rod (212) is rotatably installed with the lifting plate (204), and the insertion head (207) drives the docking gear (211) to rotate through gear transmission and belt transmission.

2. The automatic lead-enamelling device for pressure vessels according to claim 1, characterized in that: The main mechanism further comprises two conveying wheels (102) rotatably mounted in the housing (101), a conveying belt (103) being wound around the two conveying wheels (102), the conveying belt (103) sliding on the housing (101), a motor (104) being fixedly mounted in the housing (101), a rotating gear (106) and a uniform gear (113) being rotatably mounted on the housing (101), the motor (104) driving the rotating column (105) and the transmission column (114) to rotate via the belt transmission, the rotating column (105) driving the uniform gear (113) to rotate via the belt transmission, the rotating column (105) driving the conveying wheels (102) to rotate via the gear transmission, and the motor (104) driving the rotating gear (106) to rotate via the belt transmission and the gear transmission.

3. The automatic lead-enamelling device for pressure vessels according to claim 2, characterized in that: A plurality of hoisting modules are fixedly installed below the conveyor belt (103), and the hoisting modules include a connecting seat (108) fixedly installed below the conveyor belt (103), a plurality of upper wheels (109) and two side wheels (110) are rotatably installed on the connecting seat (108), and the upper wheels (109) and the side wheels (110) roll along the housing (101), a self-rotating gear (111) is rotatably installed below the connecting seat (108), and three ceramic hooks (112) are rotatably installed below the self-rotating gear (111).

4. The automatic lead-enamelling device for pressure vessels according to claim 3, characterized in that: An iron core is provided in the ceramic hook (112).

5. The automatic lead-enamelling device for pressure vessels according to claim 1, characterized in that: The processing mechanism includes a lead spraying pipe (306) fixedly mounted on the housing (101), a plurality of nozzles being provided on the lead spraying pipe (306), and the nozzles being arranged at equal intervals along the inclined lead spraying pipe (306). A collecting box (307) is fixedly mounted on the housing (101), the collecting box (307) being located below the lead spraying pipe (306), a plurality of fans being provided on the collecting box (307), and a collecting cover (308) being rotatably mounted on the collecting box (307).

6. The automatic lead-enamelling device for pressure vessels according to claim 5, characterized in that: A heating tube (304) is fixedly installed in the shell (101), a bidirectional screw rod (301) is rotatably installed in the shell (101), a lifting seat (302) is slidably installed in the shell (101), a flame gun (303) is fixedly installed on the lifting seat (302), the lifting seat (302) and the bidirectional screw rod (301) form a threaded transmission, the transmission column (114) drives the bidirectional screw rod (301) to rotate through a belt transmission, and a liquid nitrogen tube (305) is fixedly installed on the shell (101).

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