Intelligent constant-volume feeder

Abstract

The invention belongs to the industry of mechanical equipment, and particularly relates to an intelligent constant-volume discharger special for discharging in the aluminum electrolysis process. A cylinder is fixedly arranged above the middle of a fixed plate, a steel ball is pressed at a reducing position in the middle of a feeler lever, the surface of the steel ball is in horizontal contact connection with the left end of the feeler lever of a converter, an electromagnetic reversing valve is fixed on the upper side of an upper cover of the cylinder, a blowback nut is fixed on the fixed plate and at the outer edge of a lower cover of the cylinder, and a vent pipe penetrates through a hollow part of the blowback nut. The lower end of the connecting screw rod penetrates through the back flushing cushion to be fixedly connected with a constant volume barrel fixing clamping sleeve, a constant volume barrel is fixedly arranged on the lower portion in the constant volume barrel fixing clamping sleeve, the lower end of the connecting rod on the upper portion in the constant volume barrel is connected with a fork-shaped connecting piece through a pin shaft, and a connecting bolt is arranged in a fork body below the fork-shaped connecting piece through a fixing pin. The upper portion of the connecting rod is fixedly connected with the lower end of a piston rod. The four-pull-rod type constant-volume discharger is adopted, so that the labor intensity of workers during maintenance is reduced. The conical discharging body is adopted, the discharging constant volume is adjustable, the constant volume is accurate, the sealing performance is good, and it is guaranteed that materials are not leaked.

Description

Technical Field

[0001] The invention belongs to the mechanical equipment industry, and in particular relates to an intelligent constant-volume feeder specially used for feeding in an aluminum electrolysis process. Background Art

[0002] At present, the feeders used in the electrolytic aluminum process in my country generally adopt cylindrical elastic steel brush feeders. This type of feeder is prone to inaccurate feeding volume. The main reason is that the material powder is not clean and the steel brush is stuck, causing the material and the steel brush to expand due to heat, resulting in inconsistent movement speed. Because the material contains impurities and is easy to get stuck in the feed barrel, the steel brush is prone to wear after a long period of use, and the automatic compensation fails. The fixed capacity is inaccurate during feeding, which in turn affects the quality of electrolytic aluminum. There is also a rotary closed feeder, which is also a cylindrical structure. Compared with the elastic steel brush feeder, the feeding is relatively accurate. However, if there are impurities or debris in the material powder, it is easy to cause the feeding to get stuck, resulting in leakage, and the opening size is sometimes blocked, which also causes inaccurate feeding. At the same time, the feeder is heavy and inconvenient to maintain. The third type of feeder is an upper and lower annular cone seal structure, and a four-tie rod is used in the cylindrical structure. Because the four tie rods are short, sometimes leakage occurs, resulting in inaccurate fixed capacity. Due to the heavy weight of this type of feeder, installation, disassembly and maintenance are difficult. Contents of the invention The present invention aims to overcome the above technical deficiencies and provide an intelligent constant volume feeder which has a simple and compact structure, accurate automatic feeding, and is easy to install and use.

[0003] The technical solution adopted by the present invention to accurately solve the technical problem is that the intelligent constant volume feeder includes a fixed plate, a cylinder, a connecting screw, a gas-to-electric converter, a connecting bolt, and a conical valve. The characteristic is that a cylinder is fixed above the middle of the fixed plate, the upper end surface of the piston in the cylinder contacts the lower end of the contact rod, and a spring is provided on the upper end surface of the contact rod. The contact rod and the spring are installed in the same-diameter groove corresponding to the connection between the electromagnetic reversing valve and the cylinder upper cover. A steel ball is pressed at the diameter reduction part in the middle of the contact rod, and the steel ball surface horizontally contacts the left end of the converter contact rod. The right end of the converter contact rod is connected to the gas-to-electric converter, the gas-to-electric converter is fixed on the side of the cylinder upper cover, the electromagnetic reversing valve is fixed on the upper side of the cylinder upper cover, the electromagnetic reversing valve is connected to the two air inlets and outlets of the cylinder, and the gas-to-electric converter is fixed on the side of the cylinder upper cover, the electromagnetic reversing valve is fixed on the upper side of the cylinder upper cover, the electromagnetic reversing valve is connected to the two air inlets and outlets of the cylinder, and the gas-to-electric converter is fixed on the fixed plate and the outer edge of the cylinder lower cover. A fixed back-blowing nut is provided with a hollow air tube, the upper end of the air tube is connected to the air source pipeline of an external air compressor, the lower end of the air tube passes through the air pad and is connected to the air duct in the fixed sleeve of the constant volume barrel, the air duct is connected to the annular air pad, the air pad is arranged below the annular air hole on the back-blowing pad, the upper ends of four connecting screws are evenly fixed with bolts below the fixed plate, the lower end of the connecting screw passes through the back-blowing pad and is fixedly connected to the fixed sleeve of the constant volume barrel, the constant volume barrel is fixed at the bottom of the fixed sleeve of the constant volume barrel, the lower end of the connecting rod above the constant volume barrel is connected to the fork-shaped connecting piece with a pin shaft, a connecting bolt is installed in the fork body below the fork-shaped connecting piece with a fixing pin, a conical valve is threadedly connected below the connecting bolt, a discharge cone is installed on the connecting rod, and the upper part of the connecting rod is fixedly connected to the lower end of the piston rod.

[0004] The beneficial effects of the present invention are as follows: the intelligent constant volume feeder has a simple structure, is easy to install and use, and adopts a four-pull rod type constant volume feeder, which is small in size, light in weight, has a low failure rate, is easy to load and unload and maintain, and reduces the labor intensity of workers during maintenance. It adopts high-power high-temperature solenoid valve control, single-point feeding, flexible control, stable operation, no manual control, and reduces environmental pollution and personal injury. Due to the use of a conical feeder body, the resistance to rising and falling is small, the speed is too fast, the feeder fixed capacity is adjustable, the fixed volume is accurate, the sealing performance is good, and no leakage is guaranteed. High work efficiency and increased economic benefits. A gas-electric converter is used to send a signal to the control intelligent system to determine whether the cylinder piston has returned to the top, and then determine whether the conical valve has returned to its position and the barrel is closed without leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The following is a detailed description of the embodiments with reference to the accompanying drawings.

[0006] Figure 1 It is the structural diagram of the intelligent constant volume feeder.

[0007] Figure 2 yes Figure 1 Enlarged view of point I in the figure.

[0008] Figure 3 yes Figure 1 Enlarged view of point II in the figure.

[0009] In the figure: 1- electromagnetic reversing valve; 2- spring; 3- cylinder; 3-1- connecting air pipe; 4- cylinder lower cover; 5- fixing plate; 6- connecting rod; 7- connecting screw; 8- fixing sleeve of constant volume barrel: 9- constant volume barrel; 10- fork-shaped connector; 11- fixing pin; 12- hexagonal locking nut; 13- cone valve; 14- connecting bolt; 15- air duct; 16- breathable pad; 17- backflush pad; 17-1- breathable hole; 18- unloading cone; 19- breathable pipe; 20- Piston rod; 21-backflush nut; 22-air source pipeline; 23-piston; 24-gas-to-electric converter; 25-converter contact rod; 26-steel ball; 27-converter contact rod; 28-cylinder cover. DETAILED DESCRIPTION

[0010] For example, see the attached Figure 1 The intelligent constant volume feeder is a cylinder 3 fixed by bolts on the middle of the fixed plate 5, and an air inlet and outlet are arranged on the circumferential wall of the cylinder upper cover 28 and the cylinder lower cover 4, and the two air inlets and outlets are connected by a connecting air pipe 3-1. The electromagnetic reversing valve 1 is fixed on the upper cover 28 of the cylinder, and the reversing end of the electromagnetic reversing valve 1 is connected to the air inlet and outlet on the cylinder upper cover 28. The upper end surface of the piston 23 of the cylinder 3 contacts the lower end of the contact rod 27, and the upper end surface of the contact rod 27 is provided with a spring 2. The contact rod 27 and the spring 2 are installed in the same diameter groove corresponding to the connection between the magnetic reversing valve 1 and the cylinder upper cover 28. The steel ball 26 is pressed at the reduced diameter in the middle of the contact rod 27, and the steel ball 26 is horizontally contacted with the left end of the converter contact rod 25, and the right end of the converter contact rod 25 is connected to the gas-electric converter 24, and the gas-electric converter 24 is fixed on the side of the cylinder upper cover 28. A back-blowing nut 21 is fixed at the outer edges of the fixed plate 5 and the cylinder lower cover 4. The hollow of the back-blowing nut 21 is equipped with an air vent 19. The upper end of the air vent 19 is connected to the air source pipeline 22 of the external air compressor. The lower end of the air vent 19 passes through the air pad 16 to connect to the air duct 15 in the fixed sleeve 8 of the constant volume barrel. The air duct 15 is connected to the annular air pad 16. The air pad 16 is arranged below the annular air hole 17-1 on the back-blowing pad 17. The air outlet end of the air duct 15 passes through the air pad 16 corresponding to the air hole 17-1. The upper ends of four connecting screws 7 are evenly connected with bolts under the fixing plate 5. The lower ends of the connecting screws 7 pass through the backflush pad 17 and are fixedly connected to the fixed sleeve 8 of the constant volume barrel. The constant volume barrel 9 is fixedly installed below the fixed sleeve 8 of the constant volume barrel. The lower end of the connecting rod 6 above the constant volume barrel 9 is connected to the fork-shaped connecting piece 10 with a pin shaft. The fork body below the fork-shaped connecting piece 10 is equipped with a connecting bolt 14 with a fixing pin 11. The conical valve 13 is threadedly connected below the connecting bolt 14. A hexagonal locking nut 12 is set at the center below the conical valve 13. The feeder is fixed to the fixed seat below through the hexagonal locking nut 12. A feeder cone 18 is installed on the connecting rod 7 above the backflush pad 17. Figure 1At the position of the discharge cone 18 indicated by the midpoint line, the connecting rod 6 moves up and down driven by the piston rod 20 of the cylinder 3 to open and seal the discharge port, and the conical valve 13 moves up and down to seal the discharge port below the constant volume barrel 9.

[0011] The working principle of the intelligent constant volume feeder is as follows: under normal working conditions, the normally open port of the electromagnetic reversing valve 1 is connected to the lower chamber port of the feeder cylinder 3, and the upper chamber port of the cylinder 3 is connected to the normally closed port of the electromagnetic reversing valve 1. When starting to work, the slot control machine sends a signal, the electromagnetic reversing valve 1 is energized, and the upper chamber of the electromagnetic reversing valve 1 is inlet, driving the connecting rod 6 through the piston rod 20. At the same time, the piston 23 is separated from the touch rod 27, and the touch rod 27 is pushed downward by the spring 2, lifting the steel ball 26, pushing the converter touch rod 25 to contact the contact point of the gas-electric converter 24, and the gas-electric converter 24 sends a signal to prove the start of a feed, pushing the feed cone 18 to move downward, and when the feed cone 18 contacts the backflush pad 17, the upper chamber of the constant volume part is sealed, and at this time, the constant volume cylinder 9 is separated from the cone valve 13, and the powder in the constant volume cylinder 9 falls into the material box. At the same time, the air source enters the lower part of the breathable pad 16 through the back-blowing nut 21 and the breathable tube 19, and the pressurized gas blows the upper part of the material port through the breathable pad 16 to make the material bulky, so that the material discharge cone 18 and the back-blowing pad 17 are completely closed to prevent the material powder from being stuck. After staying for 2 seconds, the electromagnetic reversing valve 1 is powered off, the cylinder 3 is reversed, and the piston rod 20 drives the connecting rod 6, the material discharge cone 18, and the fork-shaped connecting piece 10 to pull the cone valve 13 upward through the connecting bolt 14. When the cone valve 13 contacts the constant volume cylinder 9, the lower part of the constant volume cylinder 9 is sealed. At this time, the material powder flows into the constant volume cylinder 9 through the back-blowing pad 17 until it is full. In this process, during the upward movement of the piston rod 20, the piston 23 pushes the touch rod 27 to move upward until the steel ball 26 contacts the small end of the touch rod 27. At this time, the converter contact rod 25 is separated from the gas-to-electric converter 24, and the gas-to-electric converter 24 is powered off. The signal is detected to the slot control machine, and the staff can monitor the on-site working conditions in real time. It proves that the cylinder 3 returns to the closed position, and the lower end of the feeder is sealed and does not leak. A working cycle is completed.

Claims

1. An intelligent constant volume feeder, comprising a fixing plate (5), a cylinder (3), a connecting screw (7), a gas-to-electric converter (24), a connecting bolt (14), and a conical valve (13), characterized in that: A cylinder (3) is fixedly mounted above the middle of the fixed plate (5). The upper end surface of the piston in the cylinder (3) contacts the lower end of the contact rod (27). The upper end surface of the contact rod (27) is provided with a spring (2). The contact rod (27) and the spring (2) are mounted in the same diameter grooves corresponding to the connection between the electromagnetic reversing valve (1) and the cylinder upper cover (28). A steel ball (26) is pressed at the reduced diameter in the middle of the contact rod (27). The steel ball surface contacts the left end of the converter contact rod (25) horizontally. The converter contact rod ( The right end of the cylinder (25) is connected to the gas-to-electric converter (24), the gas-to-electric converter (24) is fixed on the side of the cylinder upper cover (28), the electromagnetic reversing valve (1) is fixed on the upper side of the cylinder upper cover (28), the electromagnetic reversing valve (1) is connected to the two air inlets and outlets of the cylinder (3), the backflush nut (21) is fixed on the outer edge of the cylinder lower cover (4), the hollow of the backflush nut (21) is passed through the air vent (19), and the upper end of the air vent (19) is connected to the air inlet of the external air compressor. The air source pipeline (22) and the lower end of the air pipe (19) pass through the air pad (16) to communicate with the air passage in the fixed sleeve (8) of the constant volume barrel. The air passage is connected to the annular air pad (16). The air pad (16) is arranged below the annular air hole (17-1) on the backflush pad (17). The upper ends of four connecting screws (7) are evenly fixed by bolts below the fixed plate (5). The lower ends of the connecting screws (7) pass through the backflush pad (17) to be fixedly connected to the fixed sleeve (8) of the constant volume barrel. A fixed volume barrel (9) is fixedly mounted at the bottom of the fixed sleeve (8); a lower end of a connecting rod (6) at the top of the fixed volume barrel (9) is connected to a fork-shaped connecting piece (10) by a pin shaft; a connecting bolt (14) is mounted in the fork body below the fork-shaped connecting piece (10) by a fixing pin (11); a conical valve (13) is threadedly connected below the connecting bolt (14); a material discharge cone (18) is mounted on the connecting rod (6); and the top of the connecting rod (6) is fixedly connected to the lower end of the piston rod (20).

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