Revolving feeding device for alternative fuel

Abstract

The invention discloses an alternative fuel rotary feeding device which comprises a shell, a discharging rotating plate, a blowing mechanism and detection equipment, the shell comprises a feeding port, a rotating cavity and a discharging port which are sequentially connected, the discharging rotating plate is rotatably connected into the rotating cavity, and the detection equipment is arranged above or below the discharging rotating plate. The detection equipment detects the air pressure intensity in the shell; the discharging rotating plate comprises a rotating shaft and a discharging partition plate, the rotating shaft is rotationally connected with the shell, the discharging partition plate is fixedly connected with the rotating shaft, and the discharging partition plate rotates along with the rotating shaft and is used for transferring materials at the feeding port to the discharging port; the blowing mechanism is arranged at the discharging opening, and an outlet of the blowing mechanism faces the lower portion of the discharging opening. The alternative fuel rotary feeding device can reliably find and solve the problem of alternative fuel blockage.

Description

Technical Field

[0001] The invention relates to the field of alternative fuel feeding, and in particular to an alternative fuel rotary feeding device. Background Art

[0002] The production process of cement clinker consumes a lot of fossil energy and emits a lot of carbon dioxide. According to statistics, in 2021, the national cement industry's energy consumption accounted for about 10% of industrial enterprises, and carbon dioxide emissions reached 1.45 billion tons, accounting for about 12% of the total national energy consumption and carbon dioxide emissions. The cement industry faces great pressure to save energy and reduce carbon emissions, and the use of solid waste to replace fossil fuels can reduce the energy consumption of the clinker line and reduce carbon dioxide emissions, which is a common solution currently used in the cement industry.

[0003] At present, cement kilns mainly use waste textiles as alternative fuels. The waste textiles are crushed in multiple stages, and the 2D size is reduced to less than 80mm. They are then transported into the decomposition furnace to replace the fossil fuels in the decomposition furnace.

[0004] In this process, waste textile and other alternative fuels have low density and large size, which can easily cause material blockage, and material blockage will cause unstable feeding of alternative fuels, affecting the normal use of alternative fuels. Summary of the invention

[0005] The object of the present invention is to provide an alternative fuel rotary feeding device which can reliably detect and solve the problem of alternative fuel blockage.

[0006] In order to achieve the above-mentioned object, the present invention provides an alternative fuel rotary feeding device, which comprises a shell, a material discharge rotating plate, a spraying mechanism and a detection device, wherein the shell comprises a material discharge port, a rotating chamber and a material discharge port connected in sequence, the material discharge rotating plate is rotatably connected in the rotating chamber, the detection device is arranged above or below the material discharge rotating plate, and the detection device detects the air pressure in the shell;

[0007] The material unloading rotating plate comprises a rotating shaft and a material unloading partition, wherein the rotating shaft is rotatably connected to the shell, the material unloading partition is fixedly connected to the rotating shaft, and the material unloading partition rotates with the rotating shaft to transfer the material from the loading port to the unloading port;

[0008] The blowing mechanism is arranged at the material discharge port, and the outlet of the blowing mechanism faces downward of the material discharge port.

[0009] Preferably, the unloading partition includes a rigid partition and a flexible partition, and the flexible partition is wrapped around the outside of the rigid partition.

[0010] Preferably, the flexible partition is in contact with the housing.

[0011] Preferably, an angle is formed between the blowing mechanism and the axis of the feed opening.

[0012] Preferably, at least two of the blowing mechanisms are provided, and the plurality of blowing mechanisms are evenly arranged along the circumference of the discharge port, and the plurality of blowing mechanisms do not interfere with each other.

[0013] Preferably, the blowing mechanism comprises a nozzle and a variable diameter nozzle arranged at the front end of the nozzle, the diameter of the nozzle is D1, the outlet of the variable diameter nozzle is arranged to be flat, the width of the outlet is L4, and the height is H3;

[0014] Then: 80mm≤D1≤120mm;

[0015] 300mm≤L4≤800mm;

[0016] 10mm≤H3≤30mm.

[0017] The present invention also provides a method for using the alternative fuel rotary feeding device, the method comprising:

[0018] Step 1, start the material discharging rotating plate to rotate, and at the same time start the blowing mechanism to spray toward the material discharging port;

[0019] Step 2: The detection device monitors the air pressure in the housing in real time;

[0020] Step 3: When the detection device in step 2 detects that the air pressure is the atmospheric pressure value, the unloading and plate transfer is stopped;

[0021] Step 4: When the detection device detects that the air pressure is negative, restart the unloading turntable.

[0022] Preferably, the blowing mechanism further comprises a pressure regulating valve, which is arranged at the front end of the nozzle and controls the pressure of the gas entering the blowing mechanism.

[0023] Preferably, the detection device is electrically connected to the pressure regulating valve, and is used to control the pressure regulating valve to change the gas pressure in the nozzle.

[0024] According to the above technical scheme, the material unloading turntable of the present invention rotates in the rotating chamber. During operation, the materials entering the loading port will fall into the space between two adjacent unloading partitions. Then, as the material unloading turntable rotates, these materials will enter the unloading port and fall from the unloading port, thereby achieving the purpose of providing materials.

[0025] During the rotation of the material discharging rotating plate, the stirring effect of the material discharging partition can break up and evenly disperse the materials to a certain extent.

[0026] The discharge port is also provided with a blowing mechanism for blowing downwards, and the blowing mechanism is connected to compressed air, which generates pressure on the material in the discharge port by blowing air to ensure that the material can be fed smoothly.

[0027] A detection device is also provided in the shell, which can detect the gas pressure in the shell. During the normal feeding process, the air in the shell has a certain flow rate due to the effect of the system fan sucking the material. The air pressure in the shell is lower than the atmospheric pressure, and is usually about 500Pa lower than the atmospheric pressure. However, once the material is blocked during the feeding process, the material blocks the air circulation channel, causing the original negative pressure state in the shell to disappear, and the air pressure in the shell returns to atmospheric pressure. Therefore, by detecting the gas pressure in the shell with the detection device, it can be determined whether the alternative fuel rotary feeding device has a blockage.

[0028] If the detection equipment finds that the alternative fuel rotary feeding device is blocked and the material cannot be fed reliably, it is necessary to first stop rotating the feed plate, that is, stop inputting material into the alternative fuel rotary feeding device, and then, through the blowing action of the blowing mechanism, push out the material blocked in the feed.

[0029] Therefore, the alternative fuel rotary feeding device can not only detect whether blockage occurs in the alternative fuel rotary feeding device through the detection equipment, but also clear the blockage through the injection mechanism.

[0030] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the structure of an alternative fuel rotary feeding device;

[0033] Figure 2 It is the cross-section of AA;

[0034] Figure 3 It is a schematic diagram of a blowing mechanism;

[0035] Figure 4 It is the B-direction view.

[0036] Description of Reference Numerals

[0037] 11 feeding port 2 blowing mechanism

[0038] 3 detection equipment 12 rotating cavity

[0039] 13 feeding port 41 rotating shaft

[0040] 43 Rigid partition 42 Flexible partition

[0041] 21 nozzle 22 variable diameter nozzle

[0042] 5 Sealing sleeve DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0044] In the present invention, unless otherwise stated, directional words such as "above, below, inside, circumferential, front end" contained in the terms merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0045] See also Figure 1-2 An alternative fuel rotary feeding device is shown, the alternative fuel rotary feeding device comprises a shell, a material discharge rotating plate, a spraying mechanism 2 and a detection device 3, the shell comprises a feed port 11, a rotating chamber 12 and a feed port 13 connected in sequence, the material discharge rotating plate is rotatably connected in the rotating chamber 12, the detection device 3 is arranged above or below the material discharge rotating plate, and the detection device 3 detects the air pressure in the shell;

[0046] The material unloading rotating plate includes a rotating shaft 41 and a material unloading partition. The rotating shaft 41 is rotatably connected to the shell, and the material unloading partition is fixedly connected to the rotating shaft 41. The material unloading partition rotates with the rotating shaft 41 to transfer the material from the loading port 11 to the unloading port 13.

[0047] The blowing mechanism 2 is disposed at the material discharge port 13 , and an outlet of the blowing mechanism 2 faces downward of the material discharge port 13 .

[0048] Through the implementation of the above technical solution, the material discharge turntable rotates in the rotating chamber 12. During operation, the materials entering the loading port 11 will fall into the space between two adjacent material discharge partitions. Then, as the material discharge turntable rotates, the materials will enter the loading port 13 and fall from the loading port 13, thereby achieving the purpose of providing materials.

[0049] During the rotation of the material discharging rotating plate, the stirring effect of the material discharging partition can break up and evenly disperse the materials to a certain extent.

[0050] The material discharge port 13 is also provided with a blowing mechanism 2 for blowing downwards. The blowing mechanism 2 is connected to compressed air and generates pressure on the material in the material discharge port 13 by blowing air to ensure that the material can be fed smoothly.

[0051] A detection device 3 is also provided in the shell, and the detection device 3 can detect the gas pressure in the shell. During the normal feeding process, the air in the shell has a certain flow rate due to the effect of the system fan sucking the material, and the air pressure in the shell is lower than the atmospheric pressure, which is usually about 500Pa less than the atmospheric pressure. However, once the material is blocked during the feeding process, the material blocks the air circulation channel, so that the original negative pressure state in the shell disappears, and the air pressure in the shell returns to atmospheric pressure. Therefore, by detecting the gas pressure in the shell by the detection device 3, it can be determined whether the material is blocked in the alternative fuel rotary feeding device.

[0052] If the detection device 3 finds that the alternative fuel rotary feeding device is blocked and the material cannot be fed in reliably, it is necessary to first stop rotating the material discharge rotary plate, that is, stop inputting material into the alternative fuel rotary feeding device, and then, through the blowing action of the blowing mechanism 2, push out the material blocked in the discharge port 13.

[0053] Therefore, the alternative fuel rotary feeding device can not only detect whether blockage occurs in the alternative fuel rotary feeding device through the detection device 3, but also clear the blockage through the injection mechanism.

[0054] In one embodiment, the 2D size of the material is ≤80 mm. In order to avoid clogging of the material, the diameter of the feed port 11 is set to L3, and L3 should be no less than 10 times the 2D size of the material, that is, L3 is no less than 800 mm.

[0055] The diameter of the rotating chamber 12 is set to R1, then 0.5L3<R1≤L3.

[0056] In this embodiment, preferably, the unloading partition includes a rigid partition 43 and a flexible partition 42 , and the flexible partition 42 is wrapped around the outside of the rigid partition 43 .

[0057] In order to reduce the blockage of materials between the unloading baffle and the shell, the flexible baffle 42 is set as a soft material baffle with a certain elastic deformation ability. The width of the flexible baffle 42 is set to L1. Preferably, L1 is between 10cm and 30cm.

[0058] The flexible partition 42 is wrapped around the outside of the rigid partition 43, so that when the material discharge partition rotates, if there is material stuck between the shell and the material discharge partition, the material will be stuck by the flexible partition 42. Since the flexible partition 42 is easy to deform, the pressure of the flexible partition 42 on the material is smaller than that of the rigid partition 43. Therefore, when the material is stuck by the flexible partition 42, it is easy to break away.

[0059] In this embodiment, preferably, the flexible diaphragm 42 is in contact with the housing.

[0060] The flexible partition 42 can be set to PU material, rubber material, flexible steel plate, etc. The ends of the unloading partition are all set to the flexible partition 42, so that the flexible partition 42 is in contact with the shell, so as to achieve a sealing effect on the gas in the shell through the close contact between the flexible partition 42 and the shell during the material conveying process, thereby avoiding excessive loss of negative pressure in the system in the shell.

[0061] Preferably, a sealing structure is also provided on the rotating shaft 41. In one embodiment, a sealing sleeve 5 is sleeved on the contact surface between the rotating shaft 41 and the shell. The sealing sleeve 5 has a certain thickness and can seal the connecting surface between the rotating shaft 41 and the shell. At the same time, the sealing sleeve 5 is set to have a certain length so that the sealing sleeve 5 and the rotating shaft 41 have a certain contact area. In this way, a better sealing effect on the rotating shaft 41 is achieved.

[0062] In another embodiment, a plurality of sealing rings are provided on the holes of the housing that match the rotating shaft 41, so as to seal the positions where the housing matches the rotating shaft 41. Preferably, the sealing rings and the sealing sleeve 5 can be used together to achieve a better sealing effect, reduce the negative pressure loss during the material conveying process, and reduce the kinetic energy loss.

[0063] In this embodiment, preferably, an angle is set between the axis of the blowing mechanism 2 and the feed port 13 .

[0064] The blowing mechanism 2 is tilted so that the gas flow ejected by the blowing mechanism 2 can be directed as far as possible toward the middle position of the material discharge port 13. The ejected gas is purged toward the middle position of the material discharge port 13. Preferably, the blowing mechanism 2 is purged toward a circle with a radius of 1 / 2 of the material discharge port 13 so that the material near the center of the material discharge port 13 can collapse quickly, thereby avoiding the material from forming a blockage in the material discharge port 13.

[0065] The center distance between the blowing mechanism 2 and the rotating shaft 41 is H2, R1≤H2≤2R1, so that the blowing mechanism is set at a position close to the rotating chamber 12, which facilitates the blowing mechanism 2 to quickly blow away the materials falling from the rotating chamber 12, thereby avoiding the accumulation and entanglement of these materials in the discharge port 13.

[0066] In this embodiment, preferably, at least two blowing mechanisms 2 are provided, and the plurality of blowing mechanisms 2 are evenly arranged along the circumference of the discharge port 13 , and the plurality of blowing mechanisms 2 do not interfere with each other.

[0067] Arranging multiple blowing mechanisms 2 can achieve full coverage of a 1 / 2 radius circle of the discharge port 13. Multiple blowing mechanisms 2 act together on the material in the discharge port 13, so that the material therein is more likely to collapse downward under the pressure of the airflow and is less likely to be blocked.

[0068] Moreover, once the material blockage occurs in the material discharge port 13 , the blowing action of the multiple blowing mechanisms 2 can also more effectively clear the material discharge port 13 .

[0069] In this implementation process, preferably, the blowing mechanism 2 includes a nozzle 21 and a variable diameter nozzle 22 arranged at the front end of the nozzle 21, the diameter of the nozzle 21 is D1, and the outlet of the variable diameter nozzle 22 is set to be flat, and the width of the outlet is L4 and the height is H3;

[0070] Then: 80mm≤D1≤120mm;

[0071] 300mm≤L4≤800mm;

[0072] 10mm≤H3≤30mm.

[0073] The variable diameter nozzle 22 is configured to be flat, so that the blowing mechanism 2 can obtain a larger blowing area, which is beneficial for the smooth discharge of materials at the discharge port 13 .

[0074] Preferably, the outlet width L4 of the variable diameter nozzle 22 is set to: 300mm≤L4≤800mm, which is approximately 5 times the diameter of the nozzle 21, and the height H3 is set to: 10mm≤H3≤30mm, which is approximately 1 / 4 of the diameter of the nozzle 21. The connection between the variable diameter nozzle 22 and the nozzle 21 is set as a variable diameter connection, so that the airflow can smoothly transition at the connection to avoid airflow turbulence. At the same time, the flow state of the airflow can be adjusted through the variable diameter connection so that the airflow can be ejected in a flat shape according to design requirements.

[0075] A method for using an alternative fuel rotary feeding device, the method comprising:

[0076] Step 1: Start the material discharging rotating plate to rotate, and at the same time start the blowing mechanism 2 to spray toward the material discharging port 13;

[0077] Step 2: The detection device 3 monitors the air pressure in the housing in real time;

[0078] Step 3: When the detection device 3 in step 2 detects that the air pressure is the atmospheric pressure value, stop unloading and turning the plate;

[0079] Step 4: When the detection device 3 detects that the air pressure is negative, restart the unloading turntable.

[0080] When the alternative fuel rotary feeding device starts to discharge materials, the discharge rotary plate is first started to rotate, and at the same time, the blowing mechanism 2 is started to spray high-speed gas toward the discharge port 13. As the discharge rotary plate rotates, the material enters the alternative fuel rotary feeding device and slides from the rotating chamber 12 into the discharge port 13. Under the blowing action of the blowing mechanism 2, these low-density materials will be blown into the discharge port 13 and flow downward rapidly under the action of the negative pressure in the shell, thereby achieving reliable discharge of materials.

[0081] The detection device 3 can monitor the pressure inside the shell in real time. The alternative fuel rotary feeding device is configured to provide fuel for the cement kiln pre-decomposition system, and therefore, is connected to the cement kiln pre-decomposition system. The cement kiln pre-decomposition system is under negative pressure conditions. Therefore, when the alternative fuel rotary feeding device is in normal use, the shell is also in a negative pressure state. Under the action of negative pressure, the material in the discharge port 13 will be quickly sucked into the cement kiln pre-decomposition system. Therefore, under normal use, the pressure inside the shell detected by the detection device 3 is less than the standard atmospheric pressure. Once the discharge port 13 is blocked, the blocked position will divide the shell into upper and lower parts. The shell located at the top is connected to the external environment, and the gas pressure inside it is atmospheric pressure, while the shell located at the bottom is connected to the cement kiln pre-decomposition system, and the gas pressure inside it is less than atmospheric pressure.

[0082] Therefore, preferably, the detection device 3 is arranged on the loading port 11, and the detection device 3 is arranged as close as possible to the rotating chamber 12, so as to avoid the influence of the external standard air pressure environment on the detection device 3, so that the detection result of the detection device 3 is more accurate. Preferably, the distance between the detection device 3 and the center of the rotating shaft 41 is H1, R1≤H1≤2R1.

[0083] Once the detection device 3 detects that the pressure in the shell is atmospheric pressure, it means that blockage occurs in the feed port 13. At this time, it is necessary to stop the feed transfer plate and use the blowing mechanism 2 to clear the blockage without adding new material to the feed port 13.

[0084] When the blockage is cleared, the detection device 3 will detect that the pressure in the shell is in a negative pressure state again. At this time, the unloading rotary plate can be restarted to replace the fuel rotary feeding device to resume work.

[0085] In this embodiment, preferably, the blowing mechanism 2 further includes a pressure regulating valve, which is disposed at the front end of the nozzle 21 , and controls the pressure of the gas entering the blowing mechanism 2 .

[0086] When blockage occurs in the feed port 13, the pressure regulating valve can be adjusted to appropriately increase the gas pressure entering the blowing mechanism 2 to obtain a better unblocking effect.

[0087] In this embodiment, preferably, the detection device 3 is electrically connected to the pressure regulating valve, and is used to control the pressure regulating valve to change the gas pressure in the nozzle 21 .

[0088] The pressure regulating valve is provided with at least two adjustment values. The smaller pressure value corresponds to step one. When material unloading begins, the pressure regulating valve starts and supplies compressed air to the blowing mechanism 2 at a smaller pressure value. The larger pressure value corresponds to step three. When the unloading turntable is stopped, the pressure value of the pressure regulating valve is adjusted to a larger value, so that the gas pressure in the blowing mechanism 2 is greater, thereby obtaining a better blowing effect and realizing efficient dredging of the unloading port 13.

[0089] The detection device 3 is electrically connected to the pressure regulating valve. When the detection device 3 measures that the pressure inside the shell is less than the atmospheric pressure, the pressure regulating valve will maintain a smaller pressure value. When the detection device 3 measures that the pressure inside the shell becomes larger or even equal to the atmospheric pressure, the pressure regulating valve will be controlled to adjust its pressure to a larger pressure value.

[0090] Preferably, in the early stage of blockage formation, the pressure value detected by the detection device 3 will gradually increase as the blockage situation gradually worsens. Preferably, a safety range can be set for the value detected by the detection device 3. When the pressure fluctuation detected by the detection device 3 exceeds the set safety range, the system issues an alarm to remind that a blockage may occur. At this time, it is not necessary to stop the rotating shaft 41, but by adjusting the pressure value of the pressure regulating valve to a larger pressure value, so as to achieve the dredging of the blockage through a greater gas impact force, and at the same time monitor the value fluctuation of the detection device 3. If the value of the detection device 3 falls back, it means that the blockage has been dredged. If, after a period of time, the value of the detection device 3 does not fall back, then stop the rotation of the rotating shaft 41, so that the blowing mechanism 2 can be used to dredge the blockage without continuing to accumulate materials.

[0091] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0092] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0093] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A fuel alternative rotary feeding device, characterized in that: The alternative fuel rotary feeding device comprises a shell, a material discharge rotating plate, a spraying mechanism (2) and a detection device (3), wherein the shell comprises a material discharge port (11), a rotating chamber (12) and a material discharge port (13) connected in sequence, the material discharge rotating plate is rotatably connected in the rotating chamber (12), the detection device (3) is arranged above or below the material discharge rotating plate, and the detection device (3) detects the air pressure in the shell; The material unloading rotating plate comprises a rotating shaft (41) and a material unloading baffle, wherein the rotating shaft (41) is rotatably connected to the shell, and the material unloading baffle is fixedly connected to the rotating shaft (41), and the material unloading baffle rotates with the rotating shaft (41) to transfer the material from the loading port (11) to the unloading port (13); The blowing mechanism (2) is arranged at the material discharge port (13), and the outlet of the blowing mechanism (2) faces downward of the material discharge port (13).

2. The alternative fuel rotary feeding device according to claim 1, characterized in that: The unloading partition includes a rigid partition (43) and a flexible partition (42), and the flexible partition (42) is wrapped around the outside of the rigid partition (43).

3. The alternative fuel rotary feeding device according to claim 2, characterized in that: The flexible diaphragm (42) is in contact with the housing.

4. The alternative fuel rotary feeding device according to claim 1, characterized in that: An included angle is formed between the axis of the blowing mechanism (2) and the axis of the feed opening (13).

5. The alternative fuel rotary feeding device according to claim 4, characterized in that: At least two of the blowing mechanisms (2) are provided, and the plurality of blowing mechanisms (2) are evenly arranged along the circumference of the discharge port (13), and the plurality of blowing mechanisms (2) do not interfere with each other.

6. The alternative fuel rotary feeding device according to claim 4, characterized in that: The blowing mechanism (2) comprises a nozzle (21) and a variable diameter nozzle (22) arranged at the front end of the nozzle (21), the diameter of the nozzle (21) is D1, the outlet of the variable diameter nozzle (22) is arranged in a flat shape, the width of the outlet is L4, and the height is H3; Then: 80mm≤D1≤120mm; 300mm≤L4≤800mm; 10mm≤H3≤30mm.

7. A method for using the alternative fuel rotary feeding device according to claim 6, characterized in that: The method of use includes: Step 1, starting the material discharging rotating plate to rotate, and simultaneously starting the blowing mechanism (2) to spray toward the material discharging port (13); Step 2: the detection device (3) monitors the air pressure in the housing in real time; Step 3: When the detection device (3) in step 2 detects that the air pressure is the atmospheric pressure value, the unloading and rotating plate is stopped; Step 4: When the detection device (3) detects that the air pressure is negative, restart the unloading turntable.

8. The method of use according to claim 7, characterized in that: The blowing mechanism (2) further comprises a pressure regulating valve, which is arranged at the front end of the nozzle (21) and controls the pressure of the gas entering the blowing mechanism (2).

9. The method of use according to claim 8, characterized in that: The detection device (3) is electrically connected to the pressure regulating valve and is used to control the pressure regulating valve to change the gas pressure in the nozzle (21).

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