A lightweight alternative fuel buffer

Abstract

This invention discloses a lightweight alternative fuel buffer bin, which includes a bin body, an inlet (1) at the upper end of the bin body, a discharge port (3) at the lower end of the bin body, and a shaftless spiral reamer (2). A driving device (21) is provided at the upper end of the shaftless spiral reamer (2), and the lower end of the shaftless spiral reamer (2) cooperates with the discharge port (3). The driving device (21) drives the shaftless spiral reamer (2) to rotate, thus conveying material to the discharge port (3). This lightweight alternative fuel buffer bin can provide a buffer for alternative fuel in the production line, achieving the function of stably providing alternative fuel to the production line.

Description

Technical Field

[0001] This invention relates to the field of cement production, and more specifically, to a lightweight alternative fuel buffer silo. Background Technology

[0002] In recent years, the application of lightweight and flammable alternative fuels in cement kilns has been increasing. Currently, the most widely used alternative fuels include waste textiles, waste plastics, and packaging bags. Because these lightweight alternative fuels are lightweight and flexible materials, they are not easily broken and are prone to entanglement with equipment. With the continuous increase in the amount of lightweight alternative fuels disposed of, during the conveying process of coarse and fine crushers, lightweight alternative fuels often become entangled on the cutter shaft, causing equipment blockage and stoppage. This results in large fluctuations in downstream material conveying, seriously affecting the operation of the kiln system. It also causes frequent fluctuations in the operating conditions of the production line, leading to a significant reduction in clinker output and quality. Summary of the Invention

[0003] The purpose of this invention is to provide a lightweight alternative fuel buffer that can buffer alternative fuels for the production line, thereby enabling the production line to stably supply alternative fuels.

[0004] To achieve the above objectives, the present invention provides a lightweight alternative fuel buffer bin, which includes a bin body, a feed inlet located at the upper end of the bin body, a discharge inlet located at the lower end of the bin body, and a shaftless spiral reamer.

[0005] The upper end of the shaftless spiral reamer is provided with a driving device, and the lower end of the shaftless spiral reamer is engaged with the feeding port. The driving device drives the shaftless spiral reamer to rotate so as to convey material to the feeding port.

[0006] Preferably, the silo body includes a columnar silo and a conical silo arranged sequentially from top to bottom.

[0007] Preferably, N compressed air nozzles are provided at the connection between the cylindrical chamber and the conical chamber, where N ≥ 2. The N compressed air nozzles are evenly distributed along the circumference of the cylindrical chamber, and the spray direction of the N compressed air nozzles is set to be inclined downward.

[0008] Preferably, multiple feed inlets are provided, and the multiple feed inlets are evenly distributed and located on the same circumference.

[0009] Preferably, the first cross-section is the section of the conical chamber where the compressed air ejected from the compressed air nozzle intersects with the conical chamber, and the second cross-section is the section of the conical chamber where the centerline of the feed inlet intersects with the conical chamber. The first cross-section is located above the second cross-section and does not exceed the interface between the conical chamber and the cylindrical chamber.

[0010] Preferably, the compressed air ejected from the compressed air nozzle covers an angle of not less than 360° / N in the horizontal direction.

[0011] Preferably, the diameter of the feed inlet is the same as the diameter of the shaftless spiral reamer in order to provide a limit for the shaftless spiral reamer.

[0012] Preferably, the inner wall of the feed port is made of a wear-resistant material.

[0013] Preferably, the lightweight alternative fuel buffer also includes a control system, which is electrically connected to the drive device to control the discharge speed of the discharge port.

[0014] Preferably, a storage platform is provided at the bottom of the conical compartment;

[0015] The column compartment is equipped with an inspection door.

[0016] According to the above technical solution, the lightweight alternative fuel buffer bin of the present invention can play the role of storing materials. When the coarse crusher or fine crusher in front is blocked and cannot work normally, the material in the lightweight alternative fuel buffer bin can continue to be supplied to the downstream production line, and the system feeding will not be interrupted due to the failure of the coarse crusher or fine crusher.

[0017] Under the action of the drive device, the shaftless spiral reamer rotates and squeezes the material downward during the rotation, causing the material below to flow out of the light alternative fuel buffer bin through the discharge port. With the shaftless spiral reamer, since it has no main shaft, the light alternative fuel will no longer entangle with the reamer shaft. When the light alternative fuel becomes entangled with the spiral cutter head of the shaftless spiral reamer, as the shaftless spiral reamer rotates, the material entangled in the cutter head spirals downward until it flows out of the discharge port. Therefore, with the shaftless spiral reamer, material blockage will not occur in the light alternative fuel buffer bin.

[0018] Because the light alternative fuel buffer bin does not clog and has the function of buffering materials, even if the coarse crusher or fine crusher located at the front end of the light flammable alternative fuel conveying system becomes clogged, it will not affect the normal operation of the system. Therefore, by setting up the light alternative fuel buffer bin, the operating conditions of the production line, output and quality can be stabilized.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a front view of a lightweight alternative fuel buffer container;

[0022] Figure 2 This is a top view of a lightweight alternative fuel buffer container;

[0023] Figure 3 This is a process route diagram showing the location of a lightweight alternative fuel buffer.

[0024] Explanation of reference numerals in the attached figures

[0025] Detailed Implementation

[0026] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] In this invention, unless otherwise stated, directional terms such as "upper end," "lower end," "above," "below," "inclined," "inner," and "bottom" contained in the terminology represent only the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the terminology.

[0028] See Figure 1-2 The lightweight alternative fuel buffer 10 includes a hopper body, an inlet 1 located at the upper end of the hopper body, a discharge port 3 located at the lower end of the hopper body, and a shaftless spiral reamer 2.

[0029] The upper end of the shaftless spiral reamer 2 is equipped with a drive device 21, and the lower end of the shaftless spiral reamer 2 is engaged with the discharge port 3. The drive device 21 drives the shaftless spiral reamer 2 to rotate to convey materials to the discharge port 3.

[0030] Through the implementation of the above technical solution, the lightweight alternative fuel buffer 10 can serve the function of storing materials. (See also...) Figure 3 In the production system shown, when the coarse crusher 101 or fine crusher 102 at the front is blocked and cannot operate normally, the light alternative fuel buffer bin 10 contains material, so it can continue to supply material to the downstream production line and the system feeding will not be interrupted due to the failure of the coarse crusher 101 or fine crusher 102.

[0031] Under the action of the drive device 21, the shaftless spiral reamer 2 rotates and squeezes the material downward during the rotation, so that the material located below the blade of the shaftless spiral reamer 2 flows out of the light alternative fuel buffer 10 through the discharge port 3. After adopting the shaftless spiral reamer 2, since the shaftless spiral reamer 2 has no main shaft, the light alternative fuel will no longer be entangled with the reamer shaft. When the light alternative fuel is entangled with the spiral cutter head of the shaftless spiral reamer 2, as the shaftless spiral reamer 2 rotates, the material entangled with the cutter head of the shaftless spiral reamer 2 will spiral down until it flows out from the discharge port 3. Therefore, after adopting the shaftless spiral reamer 2, material blockage will not occur in the light alternative fuel buffer 10.

[0032] Since the light alternative fuel buffer bin 10 does not clog and has the function of buffering materials, even if the coarse crusher 101 or fine crusher 102 located at the front end of the light flammable alternative fuel conveying system clogs, it will not affect the normal operation of the system. Therefore, by setting up the light alternative fuel buffer bin 10, it can stabilize the operating conditions of the production line, stabilize the output and quality.

[0033] In this embodiment, preferably, the silo body includes a cylindrical silo 41 located above and a conical silo 42 located below.

[0034] To facilitate material discharge from the shaftless spiral reamer 2, a conical chamber 42 is installed above the discharge port 3. The downward-sloping sidewalls of the conical chamber 42 guide the material. When material at the bottom of the conical chamber 42 flows out through the discharge port 3, material near the center of the conical chamber 42 moves downward under the action of the shaftless spiral reamer 2, while material near the sidewalls of the conical chamber 42 slides downward along the sidewalls. The pressure exerted on the bottom of the conical chamber 42 by the material sliding along the sidewalls is significantly less than the pressure exerted on the bottom of the conical chamber 42 by the material falling freely from above. Therefore, installing the conical chamber 42 at the bottom of the chamber body can reduce the impact force of the falling material on the chamber body while ensuring the smooth fall of the material.

[0035] In this embodiment, preferably, N compressed air nozzles 5 are provided at the connection between the cylindrical chamber 41 and the conical chamber 42, where N ≥ 2, and the N compressed air nozzles 5 are evenly distributed along the circumferential direction and are inclined downward.

[0036] When the light alternative fuel is in a sticky and wet state, it may adhere to the side wall of the cone chamber 42 and fail to fall promptly after the material below, and then suddenly fall at some point. When the material falls suddenly, it may have a large velocity when it hits the material below. Under the action of this velocity, the falling material will generate a large impact force on the cone chamber 42, affecting the service life of the cone chamber 42.

[0037] The installation of a compressed air nozzle 5 at the connection between the conical chamber 42 and the cylindrical chamber 41 can effectively prevent the material from adhering to the side wall of the conical chamber 42 and not falling off in time. Under the action of the compressed air nozzle 5, compressed air will continuously blow onto the inner wall of the conical chamber 42, and the material adhering to the inner wall of the conical chamber 42 will be peeled off under the action of this compressed air.

[0038] Multiple feed inlets 1 are provided, and the multiple feed inlets 1 are evenly distributed and located on the same circumference.

[0039] Multiple feed ports 1 are evenly distributed on the upper surface of the column silo 41, which enables distributed feeding of the light alternative fuel buffer silo, thereby allowing the alternative fuel in the buffer silo to be evenly stacked in all directions.

[0040] Preferably, the top of the lightweight alternative fuel buffer bin is fed using a symmetrically distributed two-point feeding method, which can ensure that the alternative fuel is evenly accumulated in the buffer bin, avoid uneven force on the shaftless spiral reamer caused by material accumulation and blockage on one side, and ensure uniform and stable feeding.

[0041] In this embodiment, preferably, the first cross section is the section where the intersection of the compressed air ejected from the compressed air nozzle 5 and the conical chamber 42 is located, and the second cross section is the section where the intersection of the center line of the feed inlet and the conical chamber 42 is located. The first cross section is located above the second cross section and does not exceed the interface between the conical chamber and the cylindrical chamber.

[0042] The position where the compressed air ejected from the compressed air nozzle 5 intersects with the conical chamber 42 is higher than the material drop position at the feed inlet. This means that the material will be swept by the compressed air as it falls from the feed inlet. Under the action of multiple compressed air nozzles 5, the material is dispersed by the compressed air during its fall, thus achieving the effect of dispersing the material.

[0043] If the material accumulation height is lower than the height of the first section, the compressed air will bounce off the inner wall of the conical chamber 42. The bounced compressed air will then be reflected off the inner wall of the conical chamber 42 and continue to purge the material inside the conical chamber 42 a second time, improving the uniformity of the material inside the chamber, avoiding the formation of localized material accumulation, and ensuring the stability of the material discharge.

[0044] After being reflected, the compressed air moves in the direction of the shaftless helical reamer 2. Therefore, during the movement of the compressed air, the light alternative fuel located on the outer side can be pushed to the inner side of the cone chamber 42, so that it is close to the shaftless helical reamer 2, in order to fill the gap left after the material near the shaftless helical reamer 2 is pushed out of the cone chamber 42.

[0045] If the height of the material pile is greater than the height of the first section, the compressed air will first encounter the material in the cone chamber 42. Under the stirring action of the compressed air, the material in the cone chamber 42 will not easily stick together and will tend to be more evenly distributed in the cone chamber 42.

[0046] Therefore, the compressed air ejected from the compressed air nozzle 5 can evenly distribute the material inside the cone chamber 42, thereby avoiding uneven load within the cone chamber 42 during use. Even distribution of material within the cone chamber 42 also prevents the reamer from spinning idly when the material level is low, thus avoiding the inability to discharge material.

[0047] In this embodiment, preferably, the compressed air ejected from the compressed air nozzle 5 covers an angle of not less than 360° / N in the horizontal direction.

[0048] The coverage angle of a single compressed air nozzle 5 is not less than 360° / N, and N compressed air nozzles 5 can ensure complete coverage of the material drop area. Under the action of N compressed air nozzles 5, the material falling from the feed port will be blown apart within the action area of ​​the compressed air, and will not fall freely into the cone chamber 42, thereby reducing the impact of the feed port on the cone chamber 42.

[0049] The blowing area of ​​N compressed air nozzles 5 covers the entire material drop area, so that the material is blown away and falls into the cone chamber 4 below, thus achieving the purpose of uniformly distributing the material in the cone chamber 4.

[0050] Therefore, the combined action of multiple compressed air nozzles 5 can ensure that there are no blind spots in the cone chamber 42, and can achieve the purpose of evenly distributing the material in the cone chamber 42.

[0051] In this embodiment, preferably, the diameter of the feed port 3 is the same as the diameter of the shaftless spiral reamer 2, which can provide a limit for the shaftless spiral reamer 2.

[0052] The inner diameter of the feed port 3 is designed to be the same as the diameter of the shaftless spiral reamer 2. The cooperation between the feed port 3 and the shaftless spiral reamer 2 allows for the fixation of the lower end of the shaftless spiral reamer 2. Fixing the lower end of the shaftless spiral reamer 2 prevents it from deviating during operation, which is beneficial for the stability of the shaftless spiral reamer 2 during operation and effectively improves the stress distribution on the shaftless spiral reamer 2, thereby extending its service life.

[0053] The shaftless spiral reamer 2 forces the material to be fed, which enables the discharge port 3 to be sealed under the combined action of the material and the shaftless spiral reamer 2, thereby ensuring the negative pressure in the decomposition furnace connected to it.

[0054] Furthermore, the forced feeding via the shaftless spiral reamer 2 can effectively prevent material from accumulating or jamming in the cone chamber 42. It can also prevent problems such as material flowing out from the bottom of the cone chamber 42, material being suspended in the upper part, and material collapsing in the upper part, thereby avoiding intermittent fluctuating feeding and contributing to production stability.

[0055] In this embodiment, preferably, the inner wall of the feed port 3 is made of a wear-resistant material.

[0056] Because the inner wall of the feed port 3 will continuously rub against the material when the shaftless spiral reamer 2 is forcibly feeding, the inner wall of the feed port 3 is made of wear-resistant material in order to ensure the durability of the feed port 3.

[0057] In this embodiment, preferably, the lightweight alternative fuel buffer also includes a control system, which is electrically connected to the drive unit 21 to control the discharge speed of the discharge port 3.

[0058] Compared to ordinary material silos, the feeding amount of the lightweight alternative fuel buffer silo can be controlled by the drive device 21 above the shaftless spiral cutter 2, and can be adjusted in real time based on changes in the cement kiln's operating conditions. The control system can automatically adjust the rotation speed of the shaftless spiral cutter 2 according to changes in the cement kiln's operating conditions, thereby controlling the discharge speed of the feed port 3.

[0059] In this embodiment, preferably, a storage platform 421 is provided at the bottom of the cone-shaped compartment 42;

[0060] The column compartment 41 is equipped with an inspection door 411.

[0061] The bottom of the lightweight alternative fuel buffer silo is equipped with a storage platform 421. Compared to a conical silo bottom structure, the storage platform 421 is more beneficial for protecting the shaftless spiral reamer 2. This is because with a conical silo bottom structure, material continuously flows towards the bottom of the cone under the action of the conical silo wall, creating pressure on the shaftless spiral reamer 2 at the discharge port 3. However, with the storage platform 421, when there is too much material inside the conical silo 42, the pressure generated by the weight of this material can be partially absorbed by the storage platform 421. Furthermore, under the buffering effect of the storage platform 421, the material next to the shaftless spiral reamer 2 no longer has a downward tilting tendency, thus avoiding radial extrusion force on the shaftless spiral reamer 2 and reducing the risk of breakage during rotation.

[0062] An inspection door 411 is provided on the side wall of the column compartment 41. On the one hand, it allows the inspection personnel to observe the material accumulation and feeding situation in the light alternative fuel buffer compartment at any time. On the other hand, in the event of equipment failure, the staff can use the inspection door 411 to troubleshoot the equipment failure.

[0063] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0064] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0065] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A lightweight alternative fuel bunker characterized in that, The light alternative fuel storage bin comprises a bin body, a feeding port (1) at the upper end of the bin body, a discharging port (3) at the lower end of the bin body, and a shaftless spiral reamer (2), The upper end of the shaftless spiral reamer (2) is provided with a driving device (21), the lower end of the shaftless spiral reamer (2) is matched with the discharging port (3), and the driving device (21) drives the shaftless spiral reamer (2) to rotate to convey materials to the discharging port (3). The bin body comprises a cylindrical bin (41) and a conical bin (42) arranged in sequence from top to bottom. The connection between the cylindrical bin (41) and the conical bin (42) is provided with N compressed air nozzles (5), N≥2, the N compressed air nozzles (5) are uniformly distributed along the circumferential direction of the cylindrical bin (41), and the jet directions of the N compressed air nozzles (5) are set to be inclined downward. The feeding port (1) is provided with multiple feeding ports (1) which are uniformly distributed and located on the same circumference. The intersection of the compressed air jetted by the compressed air nozzle (5) and the cross section of the conical bin (42) is a first cross section, the intersection of the center line of the feeding port and the cross section of the conical bin (42) is a second cross section, the first cross section is located above the second cross section and does not exceed the interface between the conical bin (42) and the cylindrical bin (41). When the position where the compressed air jetted by the compressed air nozzle (5) intersects with the conical bin (42) is higher than the position where the material falls from the feeding port (1), the material is blown away by the compressed air during falling. When the accumulation height of the material is lower than the height of the first cross section, the compressed air rebounded by the inner wall of the conical bin (42) performs secondary blowing on the material in the conical bin (42). When the accumulation height of the material is greater than the height of the first cross section, the compressed air stirs the material in the conical bin (42) so that the material in the conical bin (42) is not easy to adhere.

2. A light alternative fuel bin as claimed in claim 1, characterized in that The angle covered by the compressed air jetted by the compressed air nozzle (5) in the horizontal direction is not less than 360° / N.

3. A light alternative fuel bin according to any of claims 1-2, characterized in that, The diameter of the discharging port (3) is the same as the diameter of the shaftless spiral reamer (2) so as to provide a limit for the shaftless spiral reamer (2).

4. A light alternative fuel bin according to claim 3, characterized in that The inner wall of the discharging port (3) is made of wear-resistant material.

5. The light alternative fuel bin of claim 1, wherein, The light alternative fuel storage bin further comprises a control system which is electrically connected with the driving device (21) to control the discharging speed of the discharging port (3).

6. The light alternative fuel bin of claim 1, wherein, The bottom of the conical bin (42) is provided with a storage platform (421). The cylindrical bin (41) is provided with an access door (411).

Images