A spiral feeding device for producing carbon anodes and a method of use

Abstract

The application discloses a spiral feeding device for carbon anode production, which comprises a spiral conveyor, a heat preservation sleeve wrapped outside the middle part of the spiral conveyor, a steel structure frame, a base with traveling wheels at the bottom of the steel structure frame for moving the steel structure frame, four vertical columns fixedly connected to the upper surface of the base at the four corners, the top end of each vertical column being fixedly connected to the lower surface of a top plate, the spiral conveyor being located between the top plate and the base, the left and right ends of the spiral conveyor being connected to a first steel wire belt and a second steel wire belt respectively, the first steel wire belt and the second steel wire belt being connected to an adjusting mechanism on the top plate, and the height and the angle of inclination of the spiral conveyor being adjusted through the adjusting mechanism. The application can improve the flexibility and convenience of feeding of a mixing kettle, save space and cost.

Description

Technical Field

[0001] This invention belongs to the field of carbon anode production technology, specifically a carbon anode production device for a spiral feeding system. Background Technology

[0002] In the production of carbon anodes, petroleum coke powder is added to molten coal tar pitch in a certain proportion and stirred. The mixed coal tar pitch is then added to a kneading pot and kneaded with dry materials for a period of time to obtain a paste. The paste is then shaped to obtain a green anode. After the green anode is roasted, a roasted anode is obtained. When feeding the kneading pot, existing feeding devices, such as the Chinese patent with publication number CN201182985Y, "A Feeding Device for a Kneading Pot," use a belt lifting mechanism to lift the hopper and raise the material to the opening of the kneading pot for feeding. The problems with this type of hopper lifting feeding device are as follows: First, all hoppers are open, generating a lot of smoke and dust; second, heating and heat preservation are not possible during the hopper lifting process, requiring reheating in the mixing pot, which prolongs the mixing time and reduces production efficiency; third, the feeding device is fixed and must be set up next to the mixing pot, occupying production space, and each mixing pot needs to be equipped with a feeding device, resulting in high costs; fourth, the lifting height is fixed and cannot be adjusted, requiring multiple types of feeding devices for different models of mixing pots with different heights in the same workshop, resulting in poor adaptability.

[0003] In addition, existing technologies also include preheating feeding methods, such as the Chinese patent "Carbon Preheatable Batching System" (CN201102907 Y), which involves configuring heating pipes on the batching system to improve production efficiency by preheating the raw materials. However, the problems with this type of system are: first, heating begins from the raw material storage stage, resulting in high energy consumption and costs for heating and insulation, making it suitable for large-scale, continuous production. For temporary changes in material formula, the materials in each storage silo must be replaced before the formula can be adjusted, resulting in insufficient flexibility; second, the batching system is also fixed, occupying production space and incurring high costs. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a spiral feeding device and method for carbon anode production, aiming to improve the flexibility and convenience of feeding the kneading pot, so that the feeding device is only located at the kneading production station when feeding, saving space and cost, and has the functions of high adjustability, reducing smoke and dust leakage and heat preservation and heating.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A screw conveyor for carbon anode production includes a screw conveyor with inlet and outlet at both ends; characterized in that: the outer side of the middle part of the screw conveyor is wrapped with an insulating sleeve for insulating the material in the screw conveyor;

[0007] It also includes a steel frame; the steel frame includes a base with wheels at the bottom for supporting the movement of the steel frame; four columns are vertically fixed at the four corners of the upper surface of the base, and the top of each column is fixedly connected to the lower surface of the top plate.

[0008] The screw conveyor is located between the top plate and the base, with a first steel wire belt and a second steel wire belt connected to its left and right ends respectively. Both the first and second steel wire belts are connected to the adjustment mechanism on the top plate, which is used to adjust the height and tilt angle of the screw conveyor.

[0009] As a further optimization, a sealed cavity is provided between the inner wall of the insulation sleeve and the outer wall of the screw conveyor. An oil inlet and an oil outlet are respectively provided at both ends of the outer wall of the insulation sleeve. The oil inlet and the oil outlet are respectively connected to the two ends of the hot oil circulation device, so that the hot oil circulates in the cavity under the drive of the hot oil circulation device to keep it warm. The hot oil circulation device is set on the upper surface of the base.

[0010] As a further optimization, the adjustment mechanism includes a rotatable drive roller, supports, a support rod, and a hydraulic cylinder; both ends of the top plate are provided with through-hole grooves, and rotatable transition rollers are provided on the through-hole grooves; the middle of the first steel wire belt and the second steel wire belt are both wound around the drive roller, and their ends pass over the two transition rollers respectively, pass through the two through-hole grooves, and are connected to the two ends of the screw conveyor; the first steel wire belt and the second steel wire belt are wound in opposite directions on the drive roller, so as to drive the two ends of the screw conveyor to move up and down simultaneously when the drive roller rotates; the shaft ends of the two ends of the drive roller are rotatably inserted into a pair of supports, and the lower part of the supports is slidably inserted into a preset groove in the top plate, so as to adjust the tilt angle of the screw conveyor when the drive roller slides left and right; a support rod is fixedly connected between the pair of supports, the middle part of the support rod is connected to the end of the telescopic rod of the hydraulic cylinder, and the other end of the hydraulic cylinder is fixedly connected to the upper surface of the top plate, so as to drive the drive roller to slide left and right when the hydraulic cylinder extends and retracts.

[0011] As a further optimization, the hot oil circulation device includes an oil tank, an oil pump, and a heater; the lower end of the oil outlet pipe connected to the oil outlet extends into the oil tank; one end of the oil pump is connected to the bottom of the oil tank, and the other end is connected to the heater; the upper part of the heater is connected to the oil inlet pipe, and the other end of the oil inlet pipe is connected to the oil inlet.

[0012] As a further optimization, both the oil outlet pipe and the oil inlet pipe are high-temperature resistant flexible hoses.

[0013] As a further optimization, temperature sensors are connected to both the oil outlet pipe and the oil inlet pipe.

[0014] This invention also provides a method for using a carbon anode production system for a screw feeder, comprising the following steps:

[0015] S1: The carbon anode production process is transferred to the mixing pot station via a spiral feeding device using a traveling wheel;

[0016] S2: The prepared materials are loaded into the screw conveyor through the feed inlet;

[0017] S3: Adjust the height and tilt angle of the screw conveyor through the adjustment mechanism so that the discharge port is aligned with the mixing pot opening;

[0018] S4: Start the screw conveyor and feed the material into the mixing pot;

[0019] As a further optimization, a heating step is also included, specifically: S5: Start the hot oil circulation device to heat the screw conveyor (1).

[0020] As a further optimization, the order of use of steps S1 to S5 is as follows: S5, S2, S1, S3, S4.

[0021] The beneficial effects of this invention are as follows.

[0022] (1) The screw conveyor body is enclosed, which reduces smoke and dust pollution.

[0023] (2) The oil and materials exchange heat through the pipe wall without direct contact, so they will not contaminate each other, making it clean and environmentally friendly.

[0024] (3) The hot oil circulation system has no direct discharge, saving energy; the heating device can be connected to two temperature sensor circuits so that the start and stop of the heating device can be controlled according to the temperature, thus making the temperature control more accurate.

[0025] (4) The base is equipped with wheels, which makes the feeding device flexible to use. It is only located at the kneading production station when feeding, saving space and avoiding dust pollution of the feeding device. It is also more convenient to maintain and repair. In addition, multiple kneading pots in the kneading workshop can be fed separately through one feeding device, which is low cost.

[0026] (5) The screw conveyor adopts a suspended fixing method, so that the feeding device has a compact structure, small overall size, can be raised and lowered, and can be tilted and adjusted, making it convenient to use.

[0027] (6) The material is heated and kept warm by the outer shell of the screw conveyor, which has a large heat exchange area and the material is heated evenly.

[0028] In summary, this device can improve the flexibility and convenience of feeding materials into the mixing pot, and save space and costs. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0030] Figure 2 for Figure 1 Top view;

[0031] Figure 3 This is a schematic diagram of the hot oil circulation device of Embodiment 1 of the present invention.

[0032] In the diagram: 1. Screw conveyor, 11. Inlet, 12. Outlet, 2. Insulation sleeve, 21. Oil inlet, 22. Oil outlet, 3. Hot oil circulation device, 31. Oil tank, 32. Oil pump, 33. Outlet pipe, 34. Inlet pipe, 35. Temperature sensor, 36. Heater, 5. Steel frame, 51. Base, 52. Column, 53. Top plate, 531. Through-hole groove, 532. Transition roller, 533. Slide, 54. Traveling wheel, 6. Drive roller, 61. First steel wire belt, 62. Second steel wire belt, 63. Support, 64. Support rod, 65. Oil cylinder, 66. Drive motor; Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some preferred embodiments of the present invention, and not all embodiments. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-3 ;

[0035] The present invention provides the following technical solution: a screw conveyor for carbon anode production, comprising a screw conveyor 1, wherein the screw conveyor 1 has an inlet 11 and an outlet 12 at its two ends respectively; a motor is connected to one end of the screw conveyor 1 via a belt, and the motor is fixed on the side wall of the screw conveyor 1 to drive the screw auger blades in the screw conveyor 1 to rotate; an insulation sleeve 2 is provided on the outer side of the middle part of the screw conveyor 1, and both ends of the insulation sleeve 2 are sealed to the outer wall of the screw conveyor 1 to form a sealed cavity between the inner wall of the insulation sleeve 2 and the outer wall of the screw conveyor 1;

[0036] The side walls at both ends of the heat-insulating sleeve 2 are respectively provided with an oil inlet 21 and an oil outlet 22. The oil inlet 21 and the oil outlet 22 are respectively connected to the two ends of the hot oil circulation device 3, so that the hot oil circulates in the cavity under the drive of the hot oil circulation device 3. Therefore, when high-temperature oil is injected into the cavity, it can heat the material in the screw conveyor 1, but will not contaminate the material.

[0037] It also includes a steel frame 5; the steel frame 5 includes a base 51 with wheels 54 at the bottom for the steel frame 5 to be movable; four columns 52 are vertically fixed at the four corners of the upper surface of the base 51, and the top of each column 52 is fixedly connected to the lower surface of the top plate 53; the screw conveyor 1 is located between the top plate 53 and the base 51, and its left and right ends are respectively connected to a first steel wire belt 61 and a second steel wire belt 62. The first steel wire belt 61 and the second steel wire belt 62 are both connected to an adjustment mechanism on the top plate 53 for adjusting the height and tilt angle of the screw conveyor 1 through the adjustment mechanism.

[0038] For example, the base 51 is equipped with a kinetic energy device, which can provide power to the traveling wheels 54, the adjustment mechanism, the hot oil circulation device, and the screw conveyor 1, enabling the feeding device to operate independently without an external power source. At this time, since the screw conveyor 1 is suspended, space is freed up on the upper surface of the base 51, facilitating the installation of the kinetic energy device and the hot oil circulation device 3. This also makes the device compact in structure and small in overall size.

[0039] In one embodiment, the hot oil circulation device 3 includes an oil tank 31, an oil pump 32, and a heater 36; the lower end of the oil outlet pipe 33 connected to the oil outlet 22 extends into the oil tank 31; one end of the oil pump 32 is connected to the bottom of the oil tank 31, and the other end is connected to the heater 36; the upper part of the heater 36 is connected to the oil inlet pipe 34, and the other end of the oil inlet pipe 34 is connected to the oil inlet 21.

[0040] Since high-temperature resistant hoses are commonly available on the market, the screw conveyor 1 can be made movable. Therefore, both the oil outlet pipe 33 and the oil inlet pipe 34 are high-temperature resistant hoses.

[0041] For example, the adjusting mechanism includes a rotatable drive roller 6, a support 63, a support rod 64, and a hydraulic cylinder 65; the top plate 53 has through-hole grooves 531 at both ends, and rotatable transition rollers 532 are provided on the through-hole grooves 531; the first steel wire belt 61 and the second steel wire belt 62 are both wound around the drive roller 6 in the middle, and their two ends pass around the two transition rollers 532 respectively, and then pass through the two through-hole grooves 531, connecting to the two ends of the screw conveyor 1; the first steel wire belt 61 and the second steel wire belt 62 are wound in opposite directions on the drive roller 55, so as to drive the screw conveyor when the drive roller 55 rotates. The two ends of the drive roller 6 move up and down simultaneously; the shaft ends of the drive roller 6 are rotatably inserted into a pair of supports 63, one of which is connected to a drive motor 66 to drive the drive roller 6 to rotate. The lower part of the support 63 is slidably inserted into a pre-set groove 533 in the top plate 53 to adjust the tilt angle of the screw conveyor 1 when the drive roller 6 slides left and right; a support rod 64 is fixed between the pair of supports 63. The middle part of the support rod 64 is connected to the end of the telescopic rod of the hydraulic cylinder 65. The other end of the hydraulic cylinder 65 is fixedly connected to the upper surface of the top plate 53 to drive the drive roller 6 to slide left and right when the hydraulic cylinder 65 extends or retracts.

[0042] To facilitate temperature monitoring, temperature sensors 35 are connected to both the oil outlet pipe 33 and the oil inlet pipe 34. Furthermore, the hot oil circulation device 3 can be connected to the circuits of the two temperature sensors to control the start and stop of the heating device based on the temperature, thus achieving more precise temperature control.

[0043] When using it, one method includes the following steps:

[0044] S1: The carbon anode production process is transferred to the mixing pot station via a spiral feeding device using a traveling wheel;

[0045] S2: The prepared materials are loaded into the screw conveyor 1 through the feed inlet 11;

[0046] S3: Adjust the height and tilt angle of the screw conveyor 1 through the adjustment mechanism so that the discharge port is aligned with the mixing pot opening;

[0047] S4: Start the screw conveyor 1 to input the material into the mixing pot.

[0048] in,

[0049] The method may also include a heating step S5, specifically: starting the hot oil circulation device 3 to heat the screw conveyor 1. Since this step is used between steps S2 and S3, the steps of this method are, in sequence: S1, S2, S5, S3, S4, to ensure that the material is heated and kept warm before entering the mixing pot, shortening the mixing time and improving efficiency.

[0050] It should be noted that this embodiment only introduces the principle of the device. For some details, such as the rubber strip, sealing ring, pipe joint, valve, etc. used for sealing fluid, as well as the technical features of the component materials designed for high temperature, and the bearing, hinge, and lubrication technical features set to ensure the mobility of the moving mechanism, these details are not omitted, but rather they do not involve the working principle of the device and are all existing technologies, and are therefore not described in detail.

[0051] The advantages of this embodiment are:

[0052] The screw conveyor body is enclosed, which reduces smoke and dust pollution.

[0053] 2. Both oil and materials exchange heat through the pipe wall without direct contact, so they will not contaminate each other.

[0054] 3. The hot oil circulation system has no direct discharge, saving energy; the hot oil circulation device 3 can be connected to two temperature sensor circuits to control the start and stop of the heating device according to the temperature, thus making the temperature control more precise.

[0055] The base is equipped with wheels, making the feeding device flexible in use. It is only located at the kneading production station when feeding, saving space and avoiding dust pollution to the feeding device, making maintenance more convenient. In addition, multiple kneading pots in the kneading workshop can be fed separately by one feeding device, which is cost-effective.

[0056] 5. The screw conveyor adopts a suspended fixing method, which makes the feeding device compact in structure, small in overall size, adjustable in height and tilt, and easy to use.

[0057] 6. The material is heated and kept warm through the outer shell of the screw conveyor 1. The heat exchange area is large and the material is heated evenly.

[0058] In summary, this device can improve the flexibility and convenience of feeding materials into the mixing pot, and save space and costs.

[0059] Example 2;

[0060] This embodiment uses the same spiral feeding device as Embodiment 1. The difference from Embodiment 1 is the method of use. Specifically, the order of use of steps S1 to S5 is as follows: S5, S2, S1, S3, S4.

[0061] Therefore, the screw conveyor 1 is heated first, and then the material is loaded. The material is heated for a long time, and it is heated at the same time as it is transferred to the mixing station, which shortens the heating time and further improves efficiency.

[0062] The parts of this invention not described in detail are prior art; for those skilled in the art, the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The scope of this invention is defined by the appended claims and their equivalents.

Claims

1. A screw conveyor for carbon anode production, comprising a screw conveyor (1) with an inlet (11) and an outlet (12) at both ends; characterized in that: The outer side of the middle part of the screw conveyor (1) is covered with a heat-insulating sleeve (2) for heat preservation of the material in the screw conveyor (1); It also includes a steel frame (5); the steel frame (5) includes a base (51) with a bottom wheel (54) for the steel frame (5) to be movable; four columns (52) are vertically fixed at the four corners of the upper surface of the base (51), and the top of each column (52) is fixedly connected to the lower surface of the top plate (53). The screw conveyor (1) is located between the top plate (53) and the base (51), and its left and right ends are respectively connected to the first wire belt (61) and the second wire belt (62). The first wire belt (61) and the second wire belt (62) are both connected to the adjustment mechanism on the top plate (53) for adjusting the height and tilt angle of the screw conveyor (1) through the adjustment mechanism. A sealed cavity is provided between the inner wall of the heat insulation sleeve (2) and the outer wall of the screw conveyor (1). The outer walls of the heat insulation sleeve (2) are respectively provided with an oil inlet (21) and an oil outlet (22). The oil inlet (21) and the oil outlet (22) are respectively connected to the two ends of the hot oil circulation device (3) for circulating hot oil in the cavity under the drive of the hot oil circulation device (3). The hot oil circulation device (3) is provided on the upper surface of the base (51). The adjustment mechanism includes a rotatable drive roller (6), a support (63), a support rod (64), and a hydraulic cylinder (65). The top plate (53) is provided with through-hole grooves (531) at both the left and right ends, and rotatable transition rollers (532) are provided on the through-hole grooves (531); the first steel wire belt (61) and the second steel wire belt (62) are both wound around the drive roller (6) in the middle, and their two ends pass over the two transition rollers (532) respectively, and then pass through the two through-hole grooves (531) to connect to the two ends of the screw conveyor (1); the first steel wire belt (61) and the second steel wire belt (62) are wound in opposite directions on the drive roller (6), so as to drive the two ends of the screw conveyor (1) to move up and down simultaneously when the drive roller (6) rotates; The shaft ends of the drive roller (6) are rotatably inserted into a pair of supports (63). The lower part of the supports (63) is slidably inserted into the preset groove (533) of the top plate (53) to adjust the tilt angle of the screw conveyor (1) when the drive roller (6) slides left and right. A support rod (64) is fixed between a pair of supports (63). The middle part of the support rod (64) is connected to the end of the telescopic rod of the hydraulic cylinder (65). The other end of the hydraulic cylinder (65) is fixedly connected to the upper surface of the top plate (53) for driving the drive roller (6) to slide left and right when the hydraulic cylinder (65) extends or retracts.

2. The screw feeding device for carbon anode production according to claim 1, characterized in that: The hot oil circulation device (3) includes an oil tank (31), an oil pump (32), and a heater (36); the lower end of the oil outlet pipe (33) connected to the oil outlet (22) extends into the oil tank (31); one end of the oil pump (32) is connected to the bottom of the oil tank (31), and the other end is connected to the heater (36); the upper part of the heater (36) is connected to the oil inlet pipe (34), and the other end of the oil inlet pipe (34) is connected to the oil inlet (21).

3. The screw feeding device for carbon anode production according to claim 2, characterized in that: Both the oil outlet pipe (33) and the oil inlet pipe (34) are high-temperature resistant flexible hoses.

4. The screw feeding device for carbon anode production according to claim 3, characterized in that: Temperature sensors (35) are connected to both the oil outlet pipe (33) and the oil inlet pipe (34).

5. A method of using a screw feeding device for carbon anode production, characterized in that, The use of a spiral feeding device for carbon anode production as described in any one of claims 1 to 4 includes the following steps: S1: The spiral feeding device for carbon anode production is transferred to the mixing pot station by means of the walking wheels (54); S2: The prepared materials are loaded into the screw conveyor (1) through the feed port (11); S3: Adjust the height and tilt angle of the screw conveyor (1) by means of the adjustment mechanism so that the discharge port (12) is aligned with the mixing pot opening; S4: Start the screw conveyor (1) to input the material into the mixing pot.

6. The method of using the screw feeding device for carbon anode production according to claim 5, characterized in that, It also includes a heating step, specifically: S5: Start the hot oil circulation device (3) to heat the screw conveyor (1).

7. The method of using the screw feeding device for carbon anode production according to claim 6, characterized in that, The order in which steps S1 to S5 are used is as follows: S5, S2, S1, S3, S4.

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