High-pressure constant feeder for biomass gasifier

Abstract

The invention relates to a high-pressure constant feeder for a biomass gasifier, and relates to the technical field of biomass gasification processes, the high-pressure constant feeder comprises a storage bin, the storage bin is vertically arranged, the top of the storage bin is communicated with a feeding pipeline, and the bottom of the storage bin is communicated with a discharging pipeline; the spiral feeder is located below the storage bin, and the spiral feeder communicates with a feeding pipeline and a discharging pipeline; the upper end of the conveying pipe is communicated with the blanking pipeline, and the lower end of the conveying pipe is communicated with the feeding pipeline; a material barrel is arranged in the material conveying pipe, the axial direction of the material barrel is arranged in the vertical direction, a weighing assembly is arranged in the material conveying pipe, a feeding control assembly is arranged at the upper end of the material barrel, the feeding control assembly is used for controlling opening or closing of feeding of the material barrel according to a detection result of the weighing assembly, and a discharging control assembly is arranged at the lower end of the material barrel. The discharging control assembly is used for controlling opening or closing of discharging of the charging barrel according to the detection result of the weighing assembly. The production efficiency and the product quality of the biomass gasifier are improved.

Description

Technical Field

[0001] The present application relates to the technical field of biomass gasification technology, and in particular to a high-pressure quantitative feeder for a biomass gasifier. Background Art

[0002] Green methanol (CH3OH) is an excellent energy carrier and fossil fuel substitute in the era of carbon peak and carbon neutrality. It is currently mainly used as green alternative fuel for ships / cars and green alternative raw materials for the chemical industry, and has renewable green properties. The International Renewable Energy Agency IRENA pointed out in its 2021 report "Innovation Scenario: Renewable Methanol" that "the sources of raw materials for green methanol must all meet renewable energy standards", so green methanol includes biomethanol, bio-electronic methanol and electronic methanol.

[0003] Biomethanol is obtained through biomass fermentation, syngas fermentation or bioconversion and other biotechnological means. Syngas is obtained by the high-temperature reaction of biomass raw materials and gasifiers in a biomass gasifier. In order to ensure the efficiency of generating syngas through the reaction in the gasifier, a reliable pressurized feeding system that can meet continuous and stable operation is required.

[0004] At present, the feeding devices of common biomass gasification equipment mainly include feeding and conveying equipment, storage bins and screw feeders. The feeding and conveying equipment is used to feed the storage bins. The storage bins are used to store materials and transport the stored materials to the screw feeders. The screw feeders are used to feed the gasifiers stably and quantitatively.

[0005] With regard to the above-mentioned related technologies, the materials in the existing storage bin are directly dropped into the screw feeder, which makes it difficult to accurately control the amount of materials in the storage bin that fall into the screw feeder each time, and further makes it difficult to accurately control the amount of materials transported to the biomass gasifier by the screw feeder each time, which affects the production efficiency and product quality of the biomass gasifier. Summary of the invention

[0006] The present application provides a high-pressure quantitative feeder for a biomass gasifier, the purpose of which is to achieve quantitative feeding of a storage bin, thereby improving the accuracy of the amount of material delivered to the biomass gasifier by a spiral feeder each time, thereby improving the production efficiency and product quality of the biomass gasifier.

[0007] The high-pressure quantitative feeder for a biomass gasifier provided in this application adopts the following technical solution: A high-pressure quantitative feeder for a biomass gasifier comprises a storage bin, which is vertically arranged, and the top of the storage bin is connected to a feeding pipe, and the bottom is connected to a feeding pipe; a screw feeder, which is located below the storage bin, and the screw feeder is connected to a feeding pipe and a discharging pipe; a delivery pipe, which is vertically arranged, the upper end of the delivery pipe is connected to the discharging pipe, and the lower end is connected to the feeding pipe; a barrel is arranged in the delivery pipe, and the axial direction of the barrel is arranged in the vertical direction, and a weighing component for detecting the weight of the barrel is arranged in the delivery pipe, a feeding control component is arranged at the upper end of the barrel, and the feeding control component is used to control the opening or closing of the barrel feeding according to the detection result of the weighing component, and a discharging control component is arranged at the lower end of the barrel, and the discharging control component is used to control the opening or closing of the barrel discharging according to the detection result of the weighing component.

[0008] By adopting the above technical solution, firstly, the setting of the storage bin can realize the storage of materials through the feeding pipe and the discharge of the stored materials through the discharging pipe. Secondly, the setting of the screw feeder can input materials into the screw feeder through the feeding pipe and discharge the materials in the screw feeder through the discharging pipe.

[0009] On this basis, a feeding pipe is provided, and the feeding pipe is connected to the feeding pipe and the feeding pipe, so that the material in the storage bin can be transported into the screw feeder. A barrel is provided in the conveying pipe, and a weighing component, a feeding control component and a discharging control component are provided on the barrel. The feeding control component can control the opening or closing of the upper end of the barrel, so that the barrel can be fed or stopped. Similarly, the discharging control component can control the discharging or stop discharging of the barrel. Thus, the cooperation of the weighing component and the feeding control component, when the weighing component detects that there is no material in the barrel, the feeding control component can open the barrel to feed, and when the weight of the material in the barrel meets the requirements, the feeding control component can close the barrel to stop feeding, so that the function of quantitative feeding of the barrel can be realized; the cooperation of the weighing component and the discharging control component, when the weight of the material in the barrel meets the requirements, the barrel is opened through the discharging control component to ensure that the material in the barrel can fall into the screw feeder, so that the quantitative discharging function can be realized. Therefore, the cooperation of the weighing component, the feed control component and the discharge control component can temporarily store a certain amount of material in the barrel, and then transport the certain amount of material to the screw feeder. This can accurately control the amount of material transported to the biomass gasifier by the screw feeder each time, thereby controlling the production efficiency and product quality of the biomass gasifier.

[0010] Optionally, the weighing assembly includes a mounting ring, the feed pipe is sleeved on the outside of the mounting ring, the mounting ring is sleeved on the outside of the barrel, and the inner wall of the mounting ring is spaced apart from the outer wall of the barrel; a floating ring is sleeved on the outer side of the barrel, and the floating ring is located on the upper side of the mounting ring; a plurality of pressure sensors are arranged on the upper side of the mounting ring, and the lower side of the floating ring contacts the pressure sensors.

[0011] By adopting the above technical solution, the mounting ring, the floating ring and a plurality of pressure sensors are arranged in coordination, when the material in the storage bin is gradually transported into the barrel, the pressure sensor can detect the weight of the barrel in real time based on the pressure of the floating ring, and then can detect the amount of material in the barrel in real time.

[0012] Optionally, the weighing assembly further includes a plurality of first vibrators, and the plurality of first vibrators are all disposed on the outer side wall of the barrel.

[0013] By adopting the above technical solution, the first vibrator is set to vibrate the material in the barrel. On the one hand, during weighing, the first vibrator can drive the material to be evenly distributed throughout the barrel, ensuring that several pressure sensors are evenly stressed and improving the accuracy of weighing. On the other hand, when the barrel feeds materials toward the screw feeder, the first vibrator can prevent the material from accumulating in the barrel.

[0014] Optionally, the feed control assembly includes a mounting plate, a sealing plug plate and a first driving member, the mounting plate being fixed on the outside of the feed pipe, a plug plate groove being provided on a side of the mounting plate away from the feed pipe, the plug plate groove being connected to the feed pipe; the sealing plug plate is plugged into and fitted with the plug plate groove, and the sealing plug plate is slidingly connected to an inner side wall of the plug plate groove; the first driving member is arranged on the mounting plate, and the first driving member is used to drive the sealing plug plate to close or open the feed pipe.

[0015] By adopting the above technical solution, the mounting plate, the sealing plug plate and the first driving member are arranged in coordination. Under the drive of the first driving member, the sealing plug plate can move in the plug plate groove, so that the sealing plug plate can be inserted into or pulled out of the feed pipe, which can control the opening or closing of the feed pipe, thereby satisfying the function of the feed control component.

[0016] Optionally, a mounting hole is formed through the sealing plug plate, and the mounting hole is located in the feed pipe; a fixed plate and a movable plate are provided on the sealing plug plate, the fixed plate closes the mounting hole, the movable plate is movably arranged on the fixed plate, and a second driving member for driving the movable plate to move on the fixed plate is also provided on the sealing plug plate; a plurality of first holes are formed through the fixed plate, and the first holes are connected to the mounting hole, and a plurality of second holes are formed through the movable plate, the first holes are arranged in a one-to-one correspondence with the second holes, and the first holes are connected to the corresponding second holes.

[0017] By adopting the above technical solution, since the sealing plug plate is provided with a mounting hole, the opening of the mounting hole enables the spaces on the upper and lower sides of the sealing plug plate to be connected. The sealing plug plate is provided with a fixed plate and a movable plate, the fixed plate closes the mounting hole, the opening of the first hole on the fixed plate and the opening of the second hole on the movable plate, when the first hole is connected with the corresponding second hole, the spaces on the upper and lower sides of the sealing plug plate are connected through the first hole and the corresponding second hole. At this time, the material can be transported into the barrel through the first hole and the corresponding second hole, which can realize the feeding of small flow rate. When the second driving member drives the movable plate to move, it can make the first hole and the corresponding second hole connected or staggered, which can control the opening or closing of the small flow rate feeding.

[0018] Optionally, the movable plate is located at the lower side of the fixed plate in the vertical direction, a second air cavity is opened in the movable plate, a plurality of boost holes are opened on the lower side of the movable plate, and the boost holes are connected with the second air cavity; an intake air flow channel is opened in the sealing plug plate, and the intake air flow channel is connected with the second air cavity; an intake pipe is arranged on the outer side of the sealing plug plate, and the intake pipe is connected with the intake air flow channel.

[0019] By adopting the above technical solution, the air intake pipe, the air intake flow channel, the second air cavity and the boost hole are connected in sequence. When compressed gas is introduced into the air intake pipe, the compressed gas flows through the air intake pipe, the air intake flow channel and the second air cavity in sequence and then is discharged into the barrel from the boost hole. This can increase the air pressure inside the barrel, thereby facilitating the downward discharge of the material inside the barrel and preventing the material from arching.

[0020] Optionally, a ventilation shaft is provided between the fixed plate and the movable plate, the upper end of the ventilation shaft is connected to the fixed plate, and the lower end is rotatably connected to the movable plate; a first air cavity is opened in the fixed plate, the first air cavity is connected to the inlet air channel, the upper end of the ventilation shaft is connected to the first air cavity, and the lower end is connected to the second air cavity.

[0021] By adopting the above technical solution, the movable plate can rotate with the fixed plate through the setting of the rotating shaft, thereby meeting the requirement of the movable connection between the movable plate and the fixed plate. On this basis, since the second driving member will drive the movable plate to move, it is not convenient for the inlet air passage to be connected with the second air cavity, so the first air cavity is opened in the fixed plate, and the first air cavity is connected with the second air cavity through the ventilation rotating shaft, and the first air cavity is connected with the inlet air passage. At this time, since the position of the fixed plate remains unchanged, it can ensure that the inlet air passage is always connected with the first air cavity, and the ventilation rotating shaft is the rotating shaft of the movable plate, so the position of the ventilation rotating shaft can also remain unchanged, thereby ensuring that the first air cavity is stably connected with the second air cavity.

[0022] Optionally, the discharge control assembly includes a discharge pipe, which is arranged in a vertical direction, and the upper end of the discharge pipe is coaxially connected to the barrel, and a control valve is arranged on the discharge pipe.

[0023] By adopting the above technical solution, the coordinated arrangement of the discharge pipe and the control valve can realize the opening or closing of the discharge pipe, which can meet the function of the discharge control component.

[0024] Optionally, a collecting hopper is provided between the barrel and the discharge pipe, the axial direction of the collecting hopper is arranged in the vertical direction, and the upper side of the collecting hopper is coaxially connected to the barrel, and the lower side is coaxially connected to the discharge pipe; a collecting trough is opened through the collecting hopper, the opening area of ​​the upper side of the collecting trough is larger than the opening area of ​​the lower side of the collecting trough, and the barrel and the discharge pipe are both connected to the collecting trough.

[0025] By adopting the above technical solution and setting the collecting trough in the collecting hopper, the material in the barrel can be gathered, making it easier for the material to be discharged from the discharge pipe.

[0026] Optionally, it also includes a boosting mechanism, which includes a first boosting pipe, a second boosting pipe and a boosting air pipe, the first boosting pipe is arranged on the storage bin, and the first boosting pipe is connected to the storage bin; the second boosting pipe is arranged on the screw feeder, the second boosting pipe is coaxially arranged with the discharge pipe, and the second boosting pipe is connected to the screw feeder; the boosting air pipe is used to introduce compressed gas, and the first boosting pipe and the second boosting pipe are both connected to the boosting air pipe.

[0027] By adopting the above-mentioned technical solution and setting up the boosting mechanism, compressed gas can be introduced into the storage bin and the screw feeder through the cooperation of the first boosting pipe, the second boosting pipe and the boosting air pipe, thereby increasing the internal pressure of the storage bin and the screw feeder, thereby increasing the speed of discharging the material from the storage bin and the screw feeder, and reducing the possibility of blockage.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the barrel, weighing component, feeding control component and discharging control component, the material in the storage bin can be quantitatively transported to the screw feeder, which can accurately control the amount of material delivered to the biomass gasifier by the screw feeder each time, thereby improving the production efficiency and product quality of the biomass gasifier.

[0029] 2. Through the coordinated setting of the sealing plug plate, the fixed plate and the movable plate, the switching between large flow rate feeding and small flow rate feeding of the barrel can be realized, which can not only ensure the feeding speed of the barrel, but also reduce the error between the actual feeding amount of the barrel and the required feeding amount.

[0030] 3. The material conveying speed can be increased by setting the booster mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the high-pressure quantitative feeder of the present application.

[0032] Figure 2 It is a schematic diagram of the overall structure of the material conveying pipe of the present application.

[0033] Figure 3 It is a schematic diagram of the cross-sectional structure of the feed conveying pipe of the present application.

[0034] Figure 4 yes Figure 3 Schematic diagram of the local enlarged structure of part A.

[0035] Figure 5 It is a schematic diagram of the overall structure of the feeding plate group of the present application.

[0036] Figure 6 It is a schematic cross-sectional structure diagram of the feeding plate group of the present application.

[0037] Figure 7 It is a schematic cross-sectional structural diagram of another position of the feeding plate assembly of the present application.

[0038] Figure 8 It is a schematic diagram of the internal structure of the feed conveying pipe of the present application.

[0039] In the figure, 1, storage bin; 11, feeding pipe; 12, unloading pipe; 13, second vibrator; 14, fluidizing gas pipe; 2, screw feeder; 21, feeding pipe; 22, discharging pipe; 3, conveying pipe; 4, barrel; 5, feeding control assembly; 51, mounting plate; 511, insert plate groove; 512, sliding long hole; 52, feeding plate assembly; 521, sealing insert plate; 5211, arc-shaped fitting surface; 5212, mounting hole; 5213, yielding ring groove; 5214, mounting groove; 5215, intake air passage; 5216, intake pipe; 522, fixing plate; 5221, first hole; 5222, first Air cavity; 523, movable plate; 5231, second hole; 5232, second air cavity; 5233, plug-in hole; 5234, boost hole; 524, second drive member; 5241, gear ring; 5242, gear; 5243, motor; 525, ventilation shaft; 53, first drive member; 6, discharge control assembly; 61, discharge pipe; 62, control valve; 63, collection hopper; 631, collection trough; 7, weighing assembly; 71, mounting ring; 72, floating ring; 73, pressure sensor; 74, first vibrator; 8, boost mechanism; 81, first boost pipe; 82, second boost pipe; 83, boost air pipe. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1 -Attached Figure 8 , further details of this application are given.

[0041] A high pressure quantitative feeder for biomass gasification furnace, referring to Figure 1 , comprising a storage bin 1, a screw feeder 2 and a delivery pipe 3. The storage bin 1 is arranged in a vertical direction, the top of the storage bin 1 is connected to a feed pipe 11, and the bottom is connected to a discharge pipe 12. The screw feeder 2 is located below the storage bin 1, and the screw feeder 2 is in a horizontal posture as a whole. The screw feeder 2 is connected to a feed pipe 21 and a discharge pipe 22. The delivery pipe 3 is arranged in a vertical direction, and the upper end of the delivery pipe 3 is connected to the discharge pipe 12, and the lower end is connected to the feed pipe 21.

[0042] The feeding pipe 11 is connected to the external silo, and the discharging pipe 22 is connected to the biomass gasifier. The external silo transports the material to the storage silo 1 through the feeding pipe 11, and the material in the storage silo 1 can enter the feeding pipe 3 through the feeding pipe 12. After the feeding pipe 3 quantitatively weighs the material, it transports the quantitative material to the feeding pipe 21, and then transports it to the screw feeder 2. Under the transportation of the screw feeder 2, the material is finally transported from the discharging pipe 22 to the biogasifier, which can realize the quantitative feeding of the biomass gasifier.

[0043] Reference Figure 2 and Figure 3A barrel 4 is arranged inside the feed pipe 3 , and the barrel 4 is coaxially arranged with the feed pipe 3 .

[0044] Reference Figure 3 and Figure 4 A feed control assembly 5 is provided at the upper end of the barrel 4 , a discharge control assembly 6 is provided at the lower end, and a weighing assembly 7 is provided between the barrel 4 and the conveying pipe 3 .

[0045] Reference Figure 2 and Figure 3 The feed control assembly 5 includes a mounting plate 51, a loading plate group 52 and a first driving member 53. The mounting plate 51 is arranged on the outside of the feeding pipe 3, and the mounting plate 51 is fixedly connected to the feeding pipe 3. A plug-in plate groove 511 is provided on the side of the mounting plate 51 away from the feeding pipe 3, and the plug-in plate groove 511 runs through the mounting plate 51 and the feeding pipe 3. The loading plate group 52 includes a sealing plug-in plate 521, which is plugged into and matched with the plug-in plate groove 511. The sealing plug-in plate 521 is slidably connected to the inner side wall of the plug-in plate groove 511 along the depth direction of the plug-in plate groove 511, and the sealing plug-in plate 521 is located on the upper side of the barrel 4 along the vertical direction. The first driving member 53 is arranged on the mounting plate 51, and the driving end of the first driving member 53 is connected to the sealing plug-in plate 521, and the driving direction of the first driving member 53 is arranged along the depth direction of the plug-in plate groove 511. In this embodiment, the first driving member 53 adopts a cylinder.

[0046] Driven by the first driving member 53 , the sealing plug plate 521 can slide in the plug plate groove 511 , so that the sealing plug plate 521 can close the feed pipe 3 or open the feed pipe 3 , and can also control the opening or closing of the upper end opening of the barrel 4 , thereby realizing the control of feeding the barrel 4 .

[0047] Reference Figure 3 and Figure 5 The sealing plug 521 is provided with an arcuate fitting surface 5211 on the side facing the material delivery pipe 3. When the sealing plug 521 is inserted into the material delivery pipe 3, the arcuate fitting surface 5211 fits with the inner wall of the material delivery pipe 3. The arrangement of the sealing plug 521 can improve the fit between the sealing plug 521 and the inner wall of the material delivery pipe 3, thereby improving the sealing effect of the sealing plug 521 on the material delivery pipe.

[0048] Reference Figure 3 and Figure 6, a mounting hole 5212 is formed through the sealing plug plate 521, and the mounting hole 5212 is coaxially arranged with the feed pipe 3. The feeding plate group 52 also includes a fixed plate 522 and a movable plate 523, and both the fixed plate 522 and the movable plate 523 are circular plates. The fixed plate 522 is plugged into and matched with the mounting hole 5212, and the fixed plate 522 is fixedly connected to the inner wall of the mounting hole 5212, the movable plate 523 is located at the lower side of the fixed plate 522, and the movable plate 523 is located in the mounting hole 5212, the movable plate 523 is rotatably connected to the fixed plate 522, and a second driving member 524 is provided on the sealing plug plate 521, and the driving end of the second driving member 524 is connected to the movable plate 523. A plurality of first holes 5221 are formed through the fixed plate 522 , and a plurality of second holes 5231 are formed through the movable plate 523 . The first holes 5221 correspond to the second holes 5231 , and the first holes 5221 are connected to the corresponding second holes 5231 .

[0049] When the first hole 5221 is connected to the corresponding second hole 5231, the upper and lower spaces of the sealing plug plate 521 are connected, and the material entering the feeding pipe 3 can be conveyed into the barrel 4 through the connected first hole 5221 and the second hole 5231, and a small flow rate of material feeding can be achieved. When the second driving member 524 drives the movable plate 523 to rotate, the first hole 5221 can be connected to or staggered with the corresponding second hole 5231, and the opening or closing of the small flow rate of material feeding can be controlled.

[0050] Reference Figure 3 and Figure 6 The second driving member 524 includes a gear ring 5241, a gear 5242 and a motor 5243. A clearance ring groove 5213 is provided on the inner side wall of the mounting hole 5212. A mounting groove 5214 is provided on the sealing plug plate 521. A sliding long hole 512 is provided on the fixed plate 522. The clearance ring groove 5213 is connected with the mounting groove 5214. The mounting groove 5214 is connected with the sliding long hole 512. The length direction of the sliding long hole 512 is set along the depth direction of the plug plate groove 511. The gear ring 5241 is sleeved on the outside of the movable plate 523, and the gear ring 5241 is rotatably set in the yield ring groove 5213; the gear 5242 is rotatably set in the installation groove 5214, and the gear 5242 is meshed with the gear ring 5241; the motor 5243 is inserted into the sliding long hole 512, and the output shaft of the motor 5243 is coaxially connected with the gear 5242, and the motor 5243 is slidably connected with the inner wall of the sliding long hole 512 along the length direction of the sliding long hole 512.

[0051] When the motor 5243 drives the gear 5242 to rotate, the gear 5242 cooperates with the gear ring 5241 to drive the movable plate 523. The opening of the sliding slot 512 ensures that the motor 5243 can move synchronously during the movement of the sealing plug plate 521.

[0052] Reference Figure 6 and Figure 7 The fixing plate 522 has a first air cavity 5222, and the sealing insert 521 has an inlet flow channel 5215 in communication with the first air cavity 5222. The sealing insert 521 is also connected to an inlet pipe 5216 in communication with the inlet flow channel 5215.

[0053] Reference Figure 6 A second air cavity 5232 is provided in the movable plate 523, and a plug hole 5233 is provided on the upper side of the movable plate 523, and the plug hole 5233 is communicated with the second air cavity 5232. A ventilation shaft 525 is provided between the movable plate 523 and the fixed plate 522, and the ventilation shaft 525 is coaxially arranged with the fixed plate 522, the upper end of the ventilation shaft 525 is fixedly connected with the fixed plate 522, and the lower end is plugged with the plug hole 5233, and the ventilation shaft 525 is rotatably connected with the inner side wall of the plug hole 5233, and the first air cavity 5222 and the second air cavity 5232 are both communicated with the ventilation shaft 525.

[0054] Reference Figure 6 A plurality of pressurizing holes 5234 are provided on the lower side of the movable plate 523 , and the plurality of pressurizing holes 5234 are all connected to the second air cavity 5232 .

[0055] Reference Figure 6 and Figure 7 By cooperating with the air inlet pipe 5216, the air inlet channel 5215, the first air cavity 5222, the ventilation shaft 525, the second air cavity 5232 and the pressurizing hole 5234, compressed gas can be introduced into the barrel 4, thereby increasing the internal air pressure of the barrel 4, facilitating the discharge of the material inside the barrel 4 and preventing the material from arching.

[0056] Reference Figure 3 and Figure 8 The weighing assembly 7 includes a mounting ring 71 and a floating ring 72. The mounting ring 71 is axially arranged in the vertical direction, and the feed pipe 3 is sleeved on the outside of the mounting ring 71. The feed pipe 3 is fixedly connected to the mounting ring 71. The barrel 4 is located in the mounting ring 71, and the outer wall of the barrel 4 is spaced apart from the inner wall of the mounting ring 71. The floating ring 72 is axially arranged in the vertical direction, and the floating ring 72 is sleeved on the outside of the barrel 4. The floating ring 72 is fixedly connected to the barrel 4. A plurality of pressure sensors 73 are arranged on the upper side of the mounting ring 71. The plurality of pressure sensors 73 are arranged in sequence along the circumference of the mounting ring 71. The floating ring 72 is located on the upper side of the mounting ring 71 in the vertical direction, and the floating ring 72 is arranged opposite to the mounting ring 71. The lower side of the floating ring 72 contacts all the pressure sensors 73.

[0057] When the barrel 4 is filled with material, the floating ring 72 contacts the pressure sensor 73 , and the pressure sensor 73 can detect the amount of material in the barrel 4 in real time, which makes it easier to control the weight of the material temporarily stored in the barrel 4 .

[0058] Reference Figure 3 The weighing assembly 7 further includes a plurality of first vibrators 74, which are arranged around the barrel 4 along the circumference of the barrel 4 and are installed on the outer side wall of the barrel 4. The arrangement of the first vibrators 74 can vibrate the material in the barrel 4. On the one hand, when weighing, the material in the barrel 4 can be balanced so that the material is evenly distributed in various places in the barrel 4, ensuring that the force on the plurality of pressure sensors 73 is even, thereby improving the accuracy of weighing; on the other hand, when the barrel 4 is quantitatively fed downward, the material can be prevented from accumulating in the barrel 4.

[0059] Reference Figure 3 The discharge control assembly 6 includes a discharge pipe 61, which is located at the lower side of the barrel 4 and is coaxially connected to the barrel 4. A control valve 62 is provided on the discharge pipe 61. In this embodiment, the control valve 62 is a gate valve driven by a cylinder. Under the action of the control valve 62, the discharge pipe 61 can be controlled to be opened or closed, thereby realizing the control of discharge of the barrel 4.

[0060] Reference Figure 3 The discharge control assembly 6 further includes a collecting hopper 63, the axial direction of which is arranged in the vertical direction, the upper side of which is coaxially connected to the barrel 4, and the lower side of which is coaxially connected to the discharge pipe 61. A collecting trough 631 is provided through the collecting hopper 63, the upper opening area of ​​the collecting trough 631 is larger than the lower opening area of ​​the collecting trough 631, and the barrel 4 and the discharge pipe 61 are both connected to the collecting trough 631. The arrangement of the collecting hopper 63 can realize the gathering of materials in the barrel 4, so that the materials are more easily discharged from the discharge pipe 61.

[0061] Reference Figure 1 and Figure 7 The high-pressure quantitative feeder further includes a boosting mechanism 8, which includes a first boosting pipe 81 and a second boosting pipe 82. The first boosting pipe 81 is arranged on the storage bin 1 and communicates with the storage bin 1. The second boosting pipe 82 is arranged on the screw feeder 2 and is coaxially arranged with the discharge pipe 22 and communicates with the screw feeder 2. The boosting mechanism 8 further includes a boosting air pipe 83. The first boosting pipe 81, the second boosting pipe 82 and the air intake pipe 5216 are all communicated with the boosting air pipe 83, and the air intake pipe 5216 is provided with a solenoid valve.

[0062] By cooperating the boosting air pipe 83 with the first boosting pipe 81, high-pressure gas can be delivered to the storage bin 1, thereby facilitating the material in the storage bin 1 to fall into the barrel 4; by cooperating the boosting air pipe 83 with the air inlet pipe 5216, the material in the barrel 4 can fall into the screw feeder 2; by cooperating the boosting air pipe 83 with the second boosting pipe 82, the material in the screw feeder 2 can be discharged. Therefore, the setting of the boosting mechanism 8 can speed up the flow of materials and reduce the occurrence of blockage and arching.

[0063] Reference Figure 1 The storage bin 1 is also provided with a plurality of second vibrators 13 and a plurality of fluidizing air pipes 14, wherein the plurality of second vibrators 13 are all provided outside the storage bin 1; the fluidizing air pipe 14 is located outside the storage bin 1, connected to the side wall of the storage bin 1, and communicated with the storage bin 1. With the cooperation of the boosting air pipe 83, the first boosting pipe 81, the second vibrators 13 and the fluidizing air pipe 14, the material discharge speed in the storage bin 1 can be increased.

[0064] The implementation principle of the embodiment of the present application is: before loading the biomass gasifier, the feeding amount of the storage bin 1 to the screw feeder 2 is calculated according to the feeding speed required by the biomass gasifier, and then the pressure when the pressure sensor 73 sends a signal is modified according to the calculation result.

[0065] When loading the biomass gasifier: First step, loading the storage bin 1: the material is transported to the storage bin 1 through the loading pipe 11 on the storage bin 1, and the loading pipe 11 is closed after the material storage volume in the storage bin 1 meets the requirements. Second step, quantitative storage in the barrel 4: open the sealing plug plate 521, the material in the storage bin 1 will fall into the barrel 4, and this is a large flow rate discharge; when the pressure sensor 73 detects that the weight of the barrel 4 is about to meet the requirements, the sealing plug plate 521 closes the feed pipe 3, and then rotates the movable plate 523, so that the material on the sealing plug plate 521 falls into the barrel 4 through the first holes 5221 and the corresponding second holes 5231, and this is a small flow rate discharge; when the pressure sensor 73 detects that the weight of the barrel 4 meets the requirements, rotate the movable plate 523, and at this time, the first holes 5221 and the corresponding second holes 5231 are staggered. The third step is unloading the barrel 4: when the weight of the barrel 4 meets the requirement, it means that the material in the barrel 4 is the required quantity, and at this time, the control valve 62 is opened, and the material in the barrel 4 falls into the screw feeder 2.

[0066] Through the above steps, it is possible to achieve quantitative feeding of materials from the storage barrel 4 to the screw feeder 2, which can improve the uniformity and continuity of the feeding of the biomass gasifier.

[0067] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-pressure quantitative feeder for a biomass gasifier, characterized in that: include: A material storage bin (1), the material storage bin (1) being arranged vertically, the top of the material storage bin (1) being connected to a material loading pipe (11), and the bottom of the material storage bin (1) being connected to a material unloading pipe (12); A screw feeder (2), the screw feeder (2) being located below the storage bin (1), the screw feeder (2) being connected to a feed pipe (21) and a discharge pipe (22); A material delivery pipe (3), the material delivery pipe (3) being arranged vertically, the upper end of the material delivery pipe (3) being connected to the material discharge pipe (12), and the lower end of the material delivery pipe (3) being connected to the material feed pipe (21); A barrel (4) is arranged in the material delivery pipe (3), and the axial direction of the barrel (4) is arranged in the vertical direction. A weighing component (7) for detecting the weight of the barrel (4) is arranged in the material delivery pipe (3). A feed control component (5) is arranged at the upper end of the barrel (4), and the feed control component (5) is used to control the opening or closing of the feeding of the barrel (4) according to the detection result of the weighing component (7). A discharge control component (6) is arranged at the lower end of the barrel (4), and the discharge control component (6) is used to control the opening or closing of the discharge of the barrel (4) according to the detection result of the weighing component (7).

2. A high pressure quantitative feeder for a biomass gasifier according to claim 1, characterized in that: The weighing assembly (7) comprises a mounting ring (71), the material delivery pipe (3) is sleeved on the outside of the mounting ring (71), the mounting ring (71) is sleeved on the outside of the barrel (4), and the inner wall of the mounting ring (71) is spaced apart from the outer wall of the barrel (4); A floating ring (72) is sleeved on the outer side of the barrel (4), and the floating ring (72) is located on the upper side of the mounting ring (71); A plurality of pressure sensors (73) are arranged on the upper side of the mounting ring (71), and the lower side of the floating ring (72) contacts the pressure sensors (73).

3. The high-pressure quantitative feeder for a biomass gasifier according to claim 1, characterized in that: The weighing assembly (7) further comprises a plurality of first vibrators (74), wherein the plurality of first vibrators (74) are all arranged on the outer side wall of the barrel (4).

4. The high-pressure quantitative feeder for a biomass gasifier according to claim 1, characterized in that: The feed control assembly (5) comprises a mounting plate (51), a sealing plug plate (521) and a first driving member (53); the mounting plate (51) is fixed to the outside of the feed pipe (3); a plug plate groove (511) is formed on a side of the mounting plate (51) away from the feed pipe (3); the plug plate groove (511) is in communication with the feed pipe (3); The sealing plug plate (521) is plugged into and matched with the plug plate slot (511), and the sealing plug plate (521) is slidably connected to the inner side wall of the plug plate slot (511); The first driving member (53) is arranged on the mounting plate (51), and the first driving member (53) is used to drive the sealing plug plate (521) to close or open the material conveying pipe (3).

5. The high-pressure quantitative feeder for a biomass gasifier according to claim 4, characterized in that: The sealing plug plate (521) is provided with a mounting hole (5212) extending therethrough, and the mounting hole (5212) is located in the material conveying pipe (3); The sealing plug plate (521) is provided with a fixed plate (522) and a movable plate (523), the fixed plate (522) closes the mounting hole (5212), the movable plate (523) is movably arranged on the fixed plate (522), and the sealing plug plate (521) is also provided with a second driving member (524) for driving the movable plate (523) to move on the fixed plate (522); The fixed plate (522) is provided with a plurality of first holes (5221) which are communicated with the mounting holes (5212); the movable plate (523) is provided with a plurality of second holes (5231) which are arranged in a one-to-one correspondence with the second holes (5231), and the first holes (5221) are communicated with the corresponding second holes (5231).

6. The high-pressure quantitative feeder for a biomass gasifier according to claim 5, characterized in that: The movable plate (523) is located at the lower side of the fixed plate (522) in the vertical direction, a second air cavity (5232) is provided in the movable plate (523), a plurality of pressurizing holes (5234) are provided at the lower side of the movable plate (523), and the pressurizing holes (5234) are in communication with the second air cavity (5232); An inlet air passage (5215) is provided in the sealing plug plate (521), and the inlet air passage (5215) is in communication with the second air cavity (5232); An air intake duct (5216) is arranged outside the sealing plug plate (521), and the air intake duct (5216) is in communication with the air intake flow channel (5215).

7. The high-pressure quantitative feeder for a biomass gasifier according to claim 6, characterized in that: A ventilation shaft (525) is provided between the fixed plate (522) and the movable plate (523); the upper end of the ventilation shaft (525) is connected to the fixed plate (522), and the lower end is rotatably connected to the movable plate (523); A first air cavity (5222) is provided in the fixing plate (522), the first air cavity (5222) being in communication with the inlet flow channel (5215), the upper end of the ventilation shaft (525) being in communication with the first air cavity (5222), and the lower end being in communication with the second air cavity (5232).

8. The high-pressure quantitative feeder for a biomass gasifier according to claim 1, characterized in that: The discharge control assembly (6) comprises a discharge pipe (61), the discharge pipe (61) is arranged in a vertical direction, and the upper end of the discharge pipe (61) is coaxially connected to the barrel (4), and a control valve (62) is arranged on the discharge pipe (61).

9. The high-pressure quantitative feeder for a biomass gasifier according to claim 8, characterized in that: A collecting hopper (63) is provided between the barrel (4) and the discharge pipe (61), the collecting hopper (63) is axially arranged in the vertical direction, and the upper side of the collecting hopper (63) is coaxially connected to the barrel (4), and the lower side is coaxially connected to the discharge pipe (61); The collecting hopper (63) is provided with a collecting trough (631) extending therethrough, the upper opening area of ​​the collecting trough (631) being larger than the lower opening area of ​​the collecting trough (631), and the material barrel (4) and the discharge pipe (61) are both in communication with the collecting trough (631).

10. The high-pressure quantitative feeder for a biomass gasifier according to claim 1, characterized in that: It also comprises a pressurizing mechanism (8), the pressurizing mechanism (8) comprising a first pressurizing pipe (81), a second pressurizing pipe (82) and a pressurizing air pipe (83), the first pressurizing pipe (81) being arranged on the material storage bin (1), and the first pressurizing pipe (81) being in communication with the material storage bin (1); The second boosting pipe (82) is arranged on the screw feeder (2), the second boosting pipe (82) is coaxially arranged with the discharge pipe (22), and the second boosting pipe (82) is in communication with the screw feeder (2); The boosting air pipe (83) is used to introduce compressed gas, and the first boosting pipe (81) and the second boosting pipe (82) are both in communication with the boosting air pipe (83).

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