Feeding system of high-frequency heating device for feeding lignite

Abstract

The utility model relates to the technical field of coal processing, in particular to a feeding system of a high-frequency heating device for feeding lignite, which comprises a concentration cylinder, the concentration cylinder is a temporary lignite storage cylinder, the bottom end of the concentration cylinder is of a hopper-shaped structure, an opening of the bottom end of the concentration cylinder is arranged above a feeding transmission belt, and the feeding transmission belt feeds the lignite into a threaded rod. According to the feeding system of the high-frequency heating device for lignite feeding, the lifting sliding plate in the discharging pipe of the concentration cylinder is matched with the spring frame and the electric drive sliding switch, the discharging opening can be opened and closed by controlling stretching and retracting of the electric drive sliding switch, and when the production rhythm of the high-frequency heating device is matched with the feeding speed, the electric drive sliding switch pushes the lifting sliding plate to move downwards; when the load in the high-frequency heating device is overloaded, the electric drive sliding switch moves upwards to achieve retraction, the spring support assists the lifting sliding plate to rebound and reset to close the discharging port, the feeding amount is accurately controlled according to the processing capacity of the high-frequency heating device, and the situation that heating is affected by feeding changes is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal processing, in particular to a high-frequency heating device feeding system for lignite feeding. BACKGROUND

[0002] Lignite, also known as firewood coal, is the lowest degree of coal, a kind of brown black, matte, low-grade coal between peat and pitch coal, because high-quality coal is almost mined out, lignite has become the main coal used in China, lignite is a low-rank coal, with high moisture content, high volatile matter, low calorific value, high oxygen content, loose structure and other characteristics, because of its low quality, direct combustion not only has low thermal efficiency, but also produces a large amount of pollutants, so lignite usually needs to be dried and upgraded before use to reduce moisture, increase calorific value and enhance its suitability as fuel or chemical raw material.

[0003] The existing high-frequency heating technology is effectively applied to lignite drying and upgrading, so a stable and efficient feeding device is indispensable, because lignite is easy to cake and stick when it is wet, and has poor flowability, it is easy to cause bridging, accumulation and other blockage problems during feeding, which may interrupt feeding, affect production continuity and even damage the feeding equipment, and uneven feeding may cause uneven heating of lignite in the heating device, some lignite may be dried too much, while some lignite may not be dried enough, affecting the final upgrading effect. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a high-frequency heating device feeding system for lignite feeding to solve the problem of bridging, accumulation and other blockage problems during lignite feeding, which may interrupt feeding, affect production continuity, damage the feeding equipment and cause uneven heating of lignite in the heating device, some lignite may be dried too much, while some lignite may not be dried enough, affecting the final upgrading effect.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a high-frequency heating device feeding system for lignite feeding, including a concentration cylinder, which is a temporary storage cylinder for lignite, the bottom end of the concentration cylinder is in the form of a hopper, and the bottom end of the concentration cylinder is open above the feeding transmission belt, the feeding transmission belt sends lignite into the threaded rod, and the threaded rod and the feeding transmission belt are both main lignite feeding conveying devices driven by electricity;

[0006] A positioning frame one is installed in the discharge pipe of the hopper structure of the concentration cylinder, and a lifting slide plate is slidably connected in the positioning frame one, the lifting slide plate is penetrated by the roller of the positioning frame two, and the positioning frame two is below the positioning frame one, and a spring frame is arranged around the outer side of the roller of the positioning frame two;

[0007] The positioning frame two is above the feeding transmission belt, and the feeding transmission belt is installed in the U-shaped support, the other end of the U-shaped support is embedded with the top opening of the centralized hopper, and the bottom opening of the centralized hopper is connected with the bottom opening of the conveying cylinder.

[0008] By adopting the technical scheme, continuous feeding is realized through the L-shaped layout and the multi-stage conveying assembly, the hopper-shaped discharge pipe and the spring sliding plate structure can prevent material blockage, the inclined conveying cylinder cooperates with the screw rod to improve the conveying stability, and the device is suitable for uniform feeding of sticky lignite.

[0009] Preferably, the supporting leg at the bottom end of the centralized cylinder penetrates through the parallel supporting frame at the bottom end of the U-shaped support, and the U-shaped support is installed in an L shape with the centralized cylinder.

[0010] By adopting the technical scheme, the supporting leg of the centralized cylinder penetrates through the supporting frame of the U-shaped support to form overall support, thereby reducing vibration and displacement during operation of the device and prolonging the service life.

[0011] Preferably, the inner wall surface of the hopper-shaped structure of the centralized cylinder is embedded with a sliding rail of an electric drive sliding switch, the electric drive sliding switch is arranged below the positioning frame, and the plug of the electric drive sliding switch is connected with the bottom end of the lifting sliding plate.

[0012] By adopting the technical scheme, the electric drive sliding switch and the spring sliding plate are linked to realize accurate opening and closing of the discharge port, the feeding can be adjusted according to the load of the heating device, thereby adapting to the production rhythm of the lignite processing of the high-frequency heating device.

[0013] Preferably, the bottom end of the lifting sliding plate is connected with the top end of the spring frame, the lifting sliding plate is in the shape of a fan blade, and the shape of the fan blade of the lifting sliding plate matches the opening in the positioning frame one.

[0014] By adopting the technical scheme, the matching structure of the fan-shaped sliding plate and the opening in the positioning frame can generate shear force on the material during movement, effectively breaking the arching phenomenon of lignite, ensuring smooth falling of the wet lignite, and reducing manual intervention.

[0015] Preferably, the positioning frame two is composed of a hollow plate body and a roller in a T shape, and the opening in the hollow plate body of the positioning frame two is in the shape of a fan.

[0016] By adopting the technical scheme, the fan-shaped opening of the T-shaped hollow positioning frame guides the material to uniformly fall on the conveying belt, avoiding partial accumulation leading to unbalanced load during conveying.

[0017] Preferably, the centralized hopper is in a trapezoidal structure, and a scraping strip is arranged at the upper end opening of the centralized hopper and abuts against the feeding transmission belt.

[0018] By adopting the above technical solution, the scraper strips clean the residual material on the conveyor belt in real time, preventing slippage or equipment failure caused by wet coal adhesion, reducing maintenance frequency, and reducing material loss.

[0019] Preferably, an adjustment frame is installed on each side of the transport cylinder, and the adjustment frame is composed of a connecting plate and a spherical telescopic rod.

[0020] Using the above technical solution, the spherical telescopic rod adjustment frame can finely adjust the tilt angle of the transport cylinder to adapt to the differences in fluidity of lignite with different moisture contents.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the high-frequency heating device feeding system for lignite feeding:

[0022] 1. The lifting slide plate inside the centralized discharge pipe works in conjunction with the spring frame and the electric drive sliding switch. The opening and closing of the discharge port can be operated by controlling the extension and retraction of the electric drive sliding switch. When the production rhythm of the high-frequency heating device matches the feeding speed, the electric drive sliding switch pushes the lifting slide plate down, the discharge port opens, and lignite is discharged. When the load inside the high-frequency heating device is overloaded, the electric drive sliding switch moves up to retract, and the spring frame assists the lifting slide plate to spring back and reset, closing the discharge port. Thus, the feeding amount is precisely controlled according to the processing capacity of the high-frequency heating device, avoiding excessive or insufficient feeding from affecting the heating effect.

[0023] 2. The centralized hopper adopts a bucket-shaped structure, combined with the fan-shaped lifting slide and the inner opening of the positioning frame to increase the height difference, which can effectively prevent lignite from bridging and accumulating in the discharge pipe. The fan-shaped lifting slide can disturb the lignite during the movement, destroy the possible bridging structure, and ensure that the lignite is discharged smoothly. The scraper strip at the upper opening of the centralized hopper abuts against the feeding conveyor belt. When the feeding conveyor belt is running, the scraper strip can scrape off the lignite stuck to the conveyor belt, avoid the accumulation of lignite on the conveyor belt, ensure the conveying efficiency of the feeding conveyor belt, and reduce material waste.

[0024] 3. Furthermore, the U-shaped support and the central cylinder are installed in an L-shape, and the bottom support of the central cylinder passes through the support frame parallel to the bottom of the U-shaped support, which enhances the stability of the entire feeding system, reduces shaking and vibration during operation, and ensures long-term reliable operation of the equipment. The adjustment frame on both sides of the conveying cylinder is composed of a connecting plate and a spherical telescopic rod, which can finely adjust the tilt angle of the conveying cylinder. By adjusting the tilt angle of the conveying cylinder, it can adapt to different lignite characteristics and feeding requirements, and improve the overall adaptability and flexibility. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the installation of the central cylinder and the U-shaped bracket of this utility model;

[0027] Figure 3 It is the concentrated cylinder and U-shaped support side sectional solid structure schematic view of the utility model;

[0028] Figure 4 It is the concentrated cylinder and U-shaped support side sectional solid structure schematic view of the utility model;

[0029] Figure 5 It is the concentrated cylinder and U-shaped support side sectional solid structure schematic view of the utility model;

[0030] Figure 6 It is the concentrated cylinder and U-shaped support side sectional solid structure schematic view of the utility model;

[0031] In the drawing: 1, concentrated cylinder;2, positioning frame one;3, lifting slide plate;4, spring frame;5, positioning frame two;6, electric drive sliding switch;7, U-shaped support;8, feeding transmission belt;9, concentrated bucket;10, transport cylinder;11, threaded rod;12, adjusting frame. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] Please refer to Figures 1-6 The utility model provides a kind of technical solutions: a lignite feeding high-frequency heating device feeding system, including concentrated cylinder 1, positioning frame one 2, lifting slide plate 3, spring frame 4, positioning frame two 5, electric drive sliding switch 6, U-shaped support 7, feeding transmission belt 8, concentrated bucket 9, transport cylinder 10, threaded rod 11 and adjusting frame 12.

[0034] Among them, concentrated cylinder 1, it is the temporary storage cylinder of lignite, concentrated cylinder 1 bottom is bucket structure, and concentrated cylinder 1 bottom end is opened above feeding transmission belt 8, feeding transmission belt 8 sends lignite into threaded rod 11, and threaded rod 11 and feeding transmission belt 8 are all the main conveying device of lignite feeding of electric drive;

[0035] The positioning frame one 2 is arranged in the discharge pipe of the hopper-shaped structure of the central cylinder 1, the lifting slide plate 3 is slidably connected in the positioning frame one 2, the lifting slide plate 3 is penetrated by the roller of the positioning frame two 5, the positioning frame two 5 is below the positioning frame one 2, the spring frame 4 is arranged around the outer side of the roller of the positioning frame two 5, the leg at the bottom end of the central cylinder 1 penetrates the parallel support frame at the bottom end of the U-shaped support 7, the U-shaped support 7 is arranged in an L shape with the central cylinder 1, the slide rail of the electric drive sliding switch 6 is embedded in the inner wall of the hopper-shaped structure of the central cylinder 1, the electric drive sliding switch 6 is arranged below the positioning frame one 2, the plug of the electric drive sliding switch 6 is connected with the bottom end of the lifting slide plate 3, the bottom end of the lifting slide plate 3 is connected with the top end of the spring frame 4, the lifting slide plate 3 is in a fan shape, and the fan shape of the lifting slide plate 3 matches the opening in the positioning frame one 2;

[0036] The specific embodiments of the present application are described in detail in conjunction with the drawings Figures 1-6 As shown in the drawings, the lignite is first stored in the central cylinder 1, the hopper-shaped structure at the bottom end of the central cylinder 1 makes the material fall and concentrate on the concave surface of the positioning frame one 2 and the lifting slide plate 3 under the action of gravity, in the standby state without feeding and in the working state, the spring frame 4 is in a natural state, the lifting slide plate 3 is supported at the inner opening of the positioning frame one 2, at this time, the contact pin end of the electric drive sliding switch 6 is in a retracted state, the plug keeps embedded with the bottom end of the lifting slide plate 3, the slide plate is flush with the positioning frame one 2, a seal is formed, and the lignite is prevented from leaking;

[0037] When the system receives a feeding signal, the electric drive sliding switch 6 is powered on, the contact pin end in the electric drive sliding switch 6 pushes the lifting slide plate 3 to slide downward along the roller of the positioning frame two 5, and the spring frame 4 is compressed, at this time, the lifting slide plate 3 in a fan shape gradually separates from the opening of the positioning frame one 2, an annular discharge channel is formed, the position length of the sliding of the electric drive sliding switch 6 is controlled, the descending distance of the lifting slide plate 3 is accurately adjusted, the opening degree of the discharge port is changed, the discharge speed is matched with the processing capacity of the high-frequency heating device in real time, and the material accumulation or flow interruption is avoided;

[0038] When the feeding demand ends, the contact pin end of the electric drive sliding switch 6 is powered off and retracted, the elastic potential energy of the spring frame 4 is released, the lifting slide plate 3 is pushed to reset to the initial position, the discharge port is closed, and the fan-shaped structure produces a scraping effect on the residual material in the resetting process, so that arching is prevented;

[0039] Positioning frame two 5 is above feeding transmission belt 8, and feeding transmission belt 8 is installed in U-shaped support 7, and the other end of U-shaped support 7 is embedded with the top opening of centralized hopper 9, and the bottom opening of centralized hopper 9 is connected with the bottom opening of conveying cylinder 10, conveying cylinder 10 is arranged in an inclined manner, and a downward discharging pipe is arranged at the other end of conveying cylinder 10, and a threaded rod 11 is arranged in conveying cylinder 10, positioning frame two 5 is composed of a hollow plate body and a roller to form a T shape, and the opening in the hollow plate body of positioning frame two 5 is a fan shape, centralized hopper 9 has a trapezoidal structure, and a scraping strip is arranged at the upper opening of centralized hopper 9 and abuts against feeding transmission belt 8, and an adjusting frame 12 is arranged on each side of conveying cylinder 10, and adjusting frame 12 is composed of a connecting plate and a spherical telescopic rod;

[0040] The accompanying drawings Figures 1-6 As shown in the drawings, the lignite discharged from the centralized cylinder 1 is uniformly distributed on the feeding transmission belt 8 through the fan-shaped opening of the T-shaped hollow design of the positioning frame two 5, and the surface of the conveying belt is designed with anti-slip patterns to ensure stable conveying of the wet lignite, when the conveying belt runs to the entrance of the centralized hopper 9, the scraping strip at the upper opening of the trapezoidal centralized hopper 9 closely abuts against the surface of the conveying belt, wherein the scraping strip is made of wear-resistant rubber material, which effectively removes the lignite particles adhered to the conveying belt, and the scraped material directly falls into the centralized hopper 9, avoiding material waste;

[0041] After the lignite enters the trapezoidal centralized hopper 9, the inclined angle of the hopper wall can guide the material to gather at the bottom opening, forming a natural buffer to reduce the impact on the subsequent equipment, the bottom end of the centralized hopper 9 is connected with the inclined conveying cylinder 10, the threaded rod 11 in the conveying cylinder 10 is driven to rotate by electricity, and the lignite is conveyed from one end of the conveying cylinder 10 to the other end through the spiral blade, and finally the lignite is conveyed into the high-frequency heating device through the discharging pipe, and the adjusting frame 12 on both sides of the conveying cylinder 10 realizes the adjustment of the inclination of the conveying cylinder 10 through the spherical structure of the spherical telescopic rod.

[0042] Working principle: when using the lignite feeding high-frequency heating device feeding system, the lignite is first stored in the centralized cylinder 1, the bottom end of which is provided with a funnel structure to facilitate the lignite discharge, and the positioning frame one 2, the lifting slide plate 3, the positioning frame two 5 and the spring frame 4 installed in the discharge pipe jointly control the lignite discharge amount, in the non-feeding state, the spring frame 4 is in a natural state, supporting the lifting slide plate 3, at this time, the contact pin end head of the electric drive sliding switch 6 is embedded in the bottom end of the lifting slide plate 3 to keep flush with the positioning frame one 2, when the lignite needs to be discharged, the electric drive sliding switch 6 drives the lifting slide plate 3 to descend, pushes the lifting slide plate 3 to slide downward against the elastic force of the spring frame 4, the opening in the positioning frame one 2 is opened, and the lignite is discharged from the centralized cylinder 1, when the electric drive sliding switch 6 is retracted, the spring frame 4 pushes the lifting slide plate 3 to reset and close the discharge port, so as to realize the intermittent control of the lignite discharge, the lignite discharged from the centralized cylinder 1 falls on the feeding transmission belt 8, which is driven by electricity to stably convey the lignite, since the scraper strip at the opening of the upper end of the centralized hopper 9 abuts against the feeding transmission belt 8, the excess lignite can be scraped off, so that the lignite uniformly enters the centralized hopper 9 and then enters the conveying cylinder 10, the lignite is conveyed from one end of the conveying cylinder 10 to the other end by the rotation of the internal threaded rod 11 and the use of the helical blade, and finally the lignite is conveyed into the high-frequency heating device through the discharge pipe, during which the adjustment frame 12 on both sides of the conveying cylinder 10 can finely adjust the inclination angle of the conveying cylinder 10 to adapt to different feeding requirements, thereby increasing the overall practicability.

[0043] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-frequency heating device feeding system for lignite material, comprising: a concentration cylinder (1) which is a temporary storage cylinder for lignite, the bottom end of the concentration cylinder (1) is a hopper structure, and the bottom end of the concentration cylinder (1) is open above a feeding transmission belt (8), the feeding transmission belt (8) feeds lignite into a threaded rod (11), and the threaded rod (11) and the feeding transmission belt (8) are both main lignite feeding conveying devices driven by electricity; characterized in that: a positioning frame one (2) is installed in the discharge pipe of the hopper structure of the concentration cylinder (1), a lifting slide plate (3) is slidably connected in the positioning frame one (2), the lifting slide plate (3) is penetrated by a roller of a positioning frame two (5), the positioning frame two (5) is below the positioning frame one (2), and spring frames (4) are arranged around the outer side of the roller of the positioning frame two (5); the positioning frame two (5) is above the feeding transmission belt (8), and the feeding transmission belt (8) is installed in a U-shaped support (7), the other end of the U-shaped support (7) is embedded with a top opening of a concentration hopper (9), the bottom end opening of the concentration hopper (9) is clamped and connected with a bottom end opening of a transportation cylinder (10), the transportation cylinder (10) is arranged in an inclined manner, the other end of the transportation cylinder (10) is provided with a downward discharge pipe, and the transportation cylinder (10) has the threaded rod (11) therein.

2. The high-frequency heating device feeding system for lignite feeding according to claim 1, characterized in that: The legs of the bottom end of the concentration cylinder (1) penetrate parallel supporting frames at the bottom end of the U-shaped support (7), and the U-shaped support (7) and the concentration cylinder (1) are arranged in an L shape.

3. The high-frequency heating device feeding system for lignite feeding according to claim 1, characterized in that: The inner wall of the hopper structure of the concentration cylinder (1) is embedded with a slide rail of an electric drive sliding switch (6), the electric drive sliding switch (6) is arranged below the positioning frame one (2), and the plug of the electric drive sliding switch (6) is clamped and connected with the bottom end of the lifting slide plate (3).

4. The high-frequency heating device feeding system for lignite feeding according to claim 1, characterized in that: The bottom end of the lifting slide plate (3) is clamped and connected with the top end of the spring frame (4), the lifting slide plate (3) is in a fan shape, and the fan shape of the lifting slide plate (3) matches the opening in the positioning frame one (2).

5. The high-frequency heating device feeding system for lignite feeding according to claim 1, characterized in that: The positioning frame two (5) is composed of a hollow plate body and a roller to form a T shape, and the opening in the hollow plate body of the positioning frame two (5) is in a fan shape.

6. The high-frequency heating device feeding system for lignite feeding according to claim 1, characterized in that: The concentration hopper (9) is in a trapezoidal structure, and a scraping strip is arranged at the upper end opening of the concentration hopper (9) to abut against the feeding transmission belt (8).

7. The high-frequency heating device feeding system for lignite feeding according to claim 1, characterized in that: One adjusting frame (12) is arranged on each side of the transportation cylinder (10), and the adjusting frame (12) is composed of a connecting plate and a spherical telescopic rod.

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