Sealed feeding device for crushed biomass gasifier

Abstract

The utility model discloses a sealed feeding device for a crushed biomass gasifier. The device is composed of a first-stage feeding box, a lifting machine, a first-stage feeding box sealing bell jar, a first-stage feeding box sealing bell jar linkage mechanism, a first-stage water seal mechanism, a second-stage feeding box, a second-stage feeding box sealing bell jar, a second-stage feeding box sealing bell jar linkage mechanism, a second-stage water seal mechanism and a programmable logic controller. The sealed feeding device for the crushed biomass gasifier disclosed by the utility model has the following beneficial effects that 1, bulky biomass raw materials with low density can be smoothly added into the gasifier; 2, a water seal mechanism is adopted, so that the gas sealing effect is good, and reliable sealing can still be kept in the vibration feeding process of the feeding box; 3, the sealing of the water sealing mechanism is safe and reliable, and the water sealing mechanism can also play a role in pressure relief even if the fire blast phenomenon occurs accidentally; and 4, the application range is wide.

Description

Technical Field

[0001] The utility model relates to a sealed feeding device, in particular to a sealed feeding device used for a biomass crushed material gasification furnace. Background Art

[0002] like Figure 1-3 As shown in the figure, the biomass crushed material gasifier currently on the market uses the two-stage rotary valve feeding mechanism of the coal gasifier. Its structure is composed of a fixed outer sleeve and a rotating inner sleeve. From top to bottom, it is connected in sequence by a silo, a first-stage rotary valve, a buffer bin, a second-stage rotary valve, and a biomass gasifier. The first-stage rotary valve has the same structure as the second-stage rotary valve. When working, the first-stage rotary valve and the second-stage rotary valve are opened and closed alternately. However, in actual applications, since most biomass raw materials are small and fluffy, the natural stacking density is 0.2 / m 3 About 1 / 5 of coal. When adding materials, the biomass fragments are stuck at the lower cone of silo Ⅰ and buffer silo Ⅲ and cannot go down. The rotary valve runs idle. At this time, only a stick can be used to poke or a hammer can be used to knock part of the biomass materials from the outside, which cannot meet the needs of normal gasification of the biomass fragments gasifier. The biomass fragments gasifier is required to be airtight during operation. In principle, the oxygen in the furnace shall not exceed 1%, otherwise there is a possibility of gas explosion. Therefore, the feeding process must be closed and cannot be opened for manual processing, which will cause the biomass fragments gasifier to not operate normally. Utility Model Content

[0003] Purpose of the utility model: To address the defects of the existing biomass crushing gasifier, such as the biomass crushing being stuck at the lower cone of the silo and the lower cone of the buffer silo and unable to go down, the rotary valve running idle, and the failure to meet the needs of normal gasification of the biomass crushing gasifier, the utility model discloses a sealed feeding device for the biomass crushing gasifier, which adopts a primary and secondary water seal sealing mechanism, and the primary and secondary feeding box bell covers are alternately opened and closed to seal and vibrate to feed.

[0004] Technical solution: A sealed feeding device for a biomass crushed material gasification furnace, comprising the following components:

[0005] The first-stage feeding box is welded in sequence by a first-stage feeding box lower cone, a first-stage feeding box shell, and a first-stage feeding box upper cover, and a first-stage feeding box sealing flange is welded at the bottom end of the first-stage feeding box lower cone;

[0006] A material lifter, the top of which is provided with a downwardly inclined material lifter outlet pipe, the bottom of which is welded to the upper cover of the first-stage charging box and communicated with the inner cavity of the first-stage charging box, the middle and upper part of the material lifter is fixedly connected to the first-stage charging box shell through a first-stage charging box fixing plate, the middle part of the material lifter is fixedly welded to the gasifier body through the material lifter fixing plate, and the lower end of the material lifter is fixed to the ground foundation;

[0007] The first-stage charging box sealing bell, which cooperates with the inner circle of the first-stage charging box sealing flange at a right angle, plays the role of line sealing;

[0008] The first-level feeding box sealing bell linkage mechanism is composed of a first-level connecting rod, a first-level swing rod and a first-level swing rod oil cylinder. The first-level feeding box sealing bell is connected to the bottom end of the first-level connecting rod through the bell connecting shaft, and the upper end of the first-level connecting rod is connected to one end of the first-level swing rod through the connecting rod connecting shaft. A first-level swing rod fulcrum shaft is provided in the middle of the first-level swing rod, and the first-level swing rod fulcrum shaft is fixedly connected to the first-level support ear, and the first-level support ear is welded to the first-level feeding box shell. The other end of the first-level swing rod passes through the first-level feeding box and is connected to the piston rod of the first-level swing rod oil cylinder through the piston rod connecting shaft. The first-level swing rod oil cylinder is fixed to the first-level oil cylinder bracket through the cylinder fixed hinge shaft, and the first-level oil cylinder bracket is welded to the first-level feeding box shell;

[0009] The primary water seal mechanism is a primary annular water groove formed by welding the lower end of the primary water seal outer sleeve and the lower end of the primary water seal inner sleeve on the upper cover of the secondary feeding box. The lower end of the primary water seal baffle ring is inserted into the primary annular water groove, and the primary water seal baffle ring is separated from the upper cover of the secondary feeding box; the upper end of the primary water seal baffle ring is welded to the outer circle of the annular upper cover of the primary water seal baffle ring, and the inner circle of the annular upper cover of the primary water seal baffle ring is welded to the outer side wall of the lower cone of the primary feeding box;

[0010] The secondary feeding box is welded in sequence by a secondary feeding box upper cover, a secondary feeding box shell and a secondary feeding box cone. A secondary feeding box sealing flange is welded at the bottom of the secondary feeding box cone. The secondary feeding box upper cover is provided with a secondary feeding box inlet, and the secondary feeding box inlet is matched with the bottom of the lower cone of the primary feeding box. The secondary feeding box is elastically supported by four symmetrically arranged feeding box legs, and the bottom of the feeding box legs is fixedly connected to the main body upper cover of the gasifier. The upper part of the feeding box legs is provided with a support plate, a rubber block with a center hole, and a rubber block pressing plate in sequence from bottom to top, and is fixed by a bolt rod welded on the center of the support plate, passing through the rubber block with a center hole and the rubber block pressing plate. The rubber block pressing plate is welded to the secondary feeding box shell, and the bottom of the secondary feeding box cone is matched with the position of the main feeding port arranged on the main body of the gasifier.

[0011] The secondary charging box sealing bell housing is matched at right angles with the inner hole of the secondary charging box sealing flange to play a line sealing role;

[0012] The secondary charging box sealing bell linkage mechanism is composed of a secondary connecting rod, a secondary swing rod and a secondary swing rod oil cylinder. The secondary charging box sealing bell is connected to the bottom end of the secondary connecting rod through a bell connecting shaft, and the upper end of the secondary connecting rod is connected to one end of the secondary swing rod through a connecting rod connecting shaft. A secondary swing rod fulcrum shaft is provided in the middle of the secondary swing rod, and the secondary swing rod fulcrum shaft is fixedly connected to the secondary support ear. The secondary support ear is welded to the secondary charging box shell. The other end of the secondary swing rod passes through the secondary charging box and is connected to the piston rod of the secondary swing rod oil cylinder through the piston rod connecting shaft. The secondary swing rod oil cylinder is fixed to the secondary cylinder bracket through the cylinder fixed hinge shaft, and the secondary cylinder bracket is welded to the secondary charging box shell.

[0013] The secondary water seal mechanism comprises the lower end of the secondary water seal inner sleeve and the lower end of the secondary water seal outer sleeve welded to the main body upper cover of the gasifier to form a secondary annular water groove, the lower end of the secondary water seal baffle ring is inserted into the secondary annular water groove, the lower end of the secondary water seal baffle ring is separated from the main body upper cover of the gasifier, and the upper end of the secondary water seal baffle ring is welded to the outer side wall of the secondary feeding box cone;

[0014] A programmable logic controller, wherein the output end of the programmable logic controller is respectively connected to the input end of the first-stage rocker arm cylinder and the input end of the second-stage rocker arm cylinder, and is used to control the start and stop of the first-stage rocker arm cylinder and the second-stage rocker arm cylinder.

[0015] Furthermore, a plurality of columns are evenly welded on the main body upper cover of the gasifier, and the tops of the columns are welded to the shell of the first-stage charging box for auxiliary support and suspension of the first-stage charging box.

[0016] Furthermore, the distance between the primary water seal baffle ring and the secondary charging box upper cover is 15-25 mm.

[0017] Furthermore, the volume of the secondary feeding box is greater than the volume of the primary feeding box.

[0018] Furthermore, a plurality of vibrators are provided on the outer side of the cone of the secondary feeding box, and the output end of the programmable logic controller is respectively connected to the input end of the plurality of vibrators for controlling the start and stop of the vibrators.

[0019] Furthermore, the distance between the lower end of the secondary water seal baffle ring and the main body upper cover of the gasifier is 15-25 mm.

[0020] Furthermore, a primary overflow pipe is provided on the upper portion of the primary water seal jacket.

[0021] Furthermore, a secondary overflow pipe is welded to the upper portion of the secondary water seal jacket.

[0022] Beneficial effects: The sealed feeding device for a biomass crushed material gasification furnace disclosed in the utility model has the following beneficial effects:

[0023] 1. Low-density bulky biomass raw materials can be smoothly added into the gasifier;

[0024] 2. The water seal mechanism is adopted, which has good gas sealing effect and can maintain reliable sealing during vibration feeding of the feeding box;

[0025] 3. The water seal mechanism is safe and reliable. Even if an explosion occurs unexpectedly, the water seal mechanism can still relieve pressure.

[0026] 4. Wide range of applications: It can be used in toxic gas environments, flammable and explosive gas environments, chemical production environments, dust charging, and fluffy material sealing and charging environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The schematic diagram of the structure of the existing biomass crushed material gasification furnace is shown in the figure, wherein: Ⅰ is the silo, Ⅱ is the primary rotary valve, Ⅲ is the buffer silo, Ⅳ is the secondary rotary valve, and Ⅴ is the biomass gasification furnace.

[0028] Figure 2 for Figure 1 Schematic diagram of the first stage rotary valve in the open state.

[0029] Figure 3 for Figure 1 Schematic diagram of the first stage rotary valve in the closed state.

[0030] Figure 4 This is a schematic diagram of a sealed feeding device for a biomass crushed material gasification furnace disclosed in the utility model.

[0031]

[0032] DETAILED DESCRIPTION

[0033] The specific implementation modes of the present utility model are described in detail below.

[0034] The "range" disclosed in the utility model is defined in the form of a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundaries of a particular range. The range defined in this way can be inclusive or exclusive of the end values, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10 to 50 is listed for a specific parameter, it is understood that the range of 10 to 40 and 20 to 50 is also expected. In addition, if the minimum range values ​​1 and 2 are listed, and if the maximum range values ​​3, 4 and 5 are listed, the following ranges can all be expected: 1 to 3, 1 to 4, 1 to 5, 2 to 3, 2 to 4 and 2 to 5. In this application, unless otherwise specified, the range of values ​​"a to b" represents an abbreviation of any real number combination between a and b, where a and b are both real numbers. For example, the range of values ​​"0 to 5" means that all real numbers between "0 to 5" have been fully listed in this article, and "0 to 5" is only an abbreviation of these numerical combinations.

[0035] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0036] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0037] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0038] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0039] Unless otherwise specified, the reaction is carried out at room temperature and pressure.

[0040] Unless otherwise specified, all parts or percentages are by weight.

[0041] In the present invention, all substances used are known substances and can be purchased or synthesized by known methods.

[0042] In the present invention, the devices or equipment used are all conventional devices or equipment known in the field and can be purchased.

[0043] Example 1

[0044] A sealed feeding device for a biomass crushed material gasification furnace, comprising the following components:

[0045] The first-stage charging box 25 is welded in sequence by the first-stage charging box lower cone 20, the first-stage charging box shell 21, and the first-stage charging box upper cover 24. The bottom end of the first-stage charging box lower cone 20 is welded with a first-stage charging box sealing flange 36;

[0046] The feeder 2 has a downwardly inclined feeder outlet pipe 23 on its top, the bottom of which is welded to the primary charging box upper cover 24 and communicated with the inner cavity of the primary charging box 25, the middle and upper part of the feeder 2 is fixedly connected to the primary charging box shell 21 through the primary charging box fixing plate 22, the middle part of the feeder 2 is fixedly welded to the gasifier body 44 through the feeder fixing plate 1, and the lower end of the feeder 2 is fixed to the ground foundation;

[0047] The first-stage charging box sealing bell 37 cooperates with the inner circle of the first-stage charging box sealing flange 36 at a right angle to play the role of line sealing;

[0048] The first-level feeding box sealing bell linkage mechanism is composed of a first-level connecting rod 34, a first-level swing rod 27 and a first-level swing rod oil cylinder 31. The first-level feeding box sealing bell 37 is connected to the bottom end of the first-level connecting rod 34 through a bell jar connecting shaft 35. The upper end of the first-level connecting rod 34 is connected to one end of the first-level swing rod 27 through a connecting rod connecting shaft 26. A first-level swing rod fulcrum shaft 29 is provided in the middle of the first-level swing rod 27. The first-level swing rod fulcrum shaft 29 is fixedly connected to a first-level support ear 28. The first-level support ear 28 is welded to the first-level feeding box housing 21. The other end of the first-level swing rod 27 passes through the first-level feeding box 25 and is connected to the piston rod of the first-level swing rod oil cylinder 31 through a piston rod connecting shaft 30. The first-level swing rod oil cylinder 31 is fixed to the first-level oil cylinder bracket 33 through a cylinder fixed hinge shaft 32. The first-level oil cylinder bracket 33 is welded to the first-level feeding box housing 21.

[0049] The primary water seal mechanism is a primary annular water trough formed by welding the lower end of the primary water seal outer sleeve 15 and the lower end of the primary water seal inner sleeve 17 on the secondary feeding box upper cover 14, the lower end of the primary water seal baffle ring 16 is inserted into the primary annular water trough, and the primary water seal baffle ring 16 is separated from the secondary feeding box upper cover 14; the upper end of the primary water seal baffle ring 16 is welded to the outer circle of the primary water seal baffle ring annular upper cover 19, the inner circle of the primary water seal baffle ring annular upper cover 19 is welded to the outer side wall of the lower cone 20 of the primary feeding box, and the upper part of the primary water seal outer sleeve 15 is provided with a primary overflow pipe 18;

[0050] The secondary feeding box 39 is welded in sequence by the secondary feeding box upper cover 14, the secondary feeding box shell 13, and the secondary feeding box cone 7. The bottom of the secondary feeding box cone 7 is welded with a secondary feeding box sealing flange 41. The secondary feeding box upper cover 14 is provided with a secondary feeding box inlet 38, and the secondary feeding box inlet 38 is adapted to the bottom of the primary feeding box lower cone 20. The secondary feeding box 39 is elastically supported by four symmetrically arranged feeding box legs 9. The bottom of the feeding box leg 9 is fixedly connected to the main body upper cover 42, and the upper part of the feeding box leg 9 is provided with a support plate 10, a rubber block 11 with a center hole, and a rubber block pressing plate 12 in sequence from bottom to top. The bolt rod welded on the center of the support plate 10 passes through the rubber block 11 with a center hole and the rubber block pressing plate 12 to achieve fixation. The rubber block pressing plate 12 is welded to the secondary feeding box shell 13, and the bottom of the secondary feeding box cone 7 is adapted to the position of the main body feeding port 43 arranged on the gasifier body 44;

[0051] The secondary charging box sealing bell 40 is matched at right angles with the inner hole of the secondary charging box sealing flange 41 to play a line sealing role;

[0052] The secondary charging box sealing bell linkage mechanism is composed of a secondary connecting rod, a secondary swing rod and a secondary swing rod oil cylinder. The secondary charging box sealing bell 40 is connected to the bottom end of the secondary connecting rod through the bell connecting shaft 35, and the upper end of the secondary connecting rod is connected to one end of the secondary swing rod through the connecting rod connecting shaft 26. A secondary swing rod fulcrum shaft is provided in the middle of the secondary swing rod, and the secondary swing rod fulcrum shaft is fixedly connected to the secondary support ear, and the secondary support ear is welded to the secondary charging box housing 13. The other end of the secondary swing rod passes through the secondary charging box 39 and is connected to the piston rod of the secondary swing rod oil cylinder through the piston rod connecting shaft 30. The secondary swing rod oil cylinder is fixed to the secondary cylinder bracket through the cylinder fixed hinge shaft 32, and the secondary cylinder bracket is welded to the secondary charging box housing 13;

[0053] The secondary water seal mechanism is formed by welding the lower end of the secondary water seal inner sleeve 3 and the lower end of the secondary water seal outer sleeve 4 on the main body upper cover 42 of the gasifier to form a secondary annular water groove, the lower end of the secondary water seal baffle ring 5 is inserted into the secondary annular water groove, the lower end of the secondary water seal baffle ring 5 is separated from the main body upper cover 42 of the gasifier, and the upper end of the secondary water seal baffle ring 5 is welded to the outer side wall of the secondary feeding box cone 7; the upper part of the secondary water seal outer sleeve 4 is welded with a secondary overflow pipe 6;

[0054] A programmable logic controller, wherein the output end of the programmable logic controller is respectively connected to the input end of the primary rocker arm cylinder 31 and the input end of the secondary rocker arm cylinder, and is used to control the start and stop of the primary rocker arm cylinder 31 and the secondary rocker arm cylinder.

[0055] The primary annular water tank is filled with water to seal a small amount of gas that jumps up when the secondary charging box inlet 38 is connected to the main body charging port 43 when the secondary charging box sealing bell 40 is opened downward to unload.

[0056] Furthermore, a plurality of columns are evenly welded on the main body upper cover 42 of the gasifier, and the tops of the columns are welded to the primary charging box shell 21 for auxiliary support and suspension of the primary charging box 25 .

[0057] Further, the spacing between the primary water seal baffle ring 16 and the secondary charging box upper cover 14 is 20 mm. That is to say, the primary charging box 25 as a whole has no mechanical contact with the lower part.

[0058] Furthermore, the volume of the secondary feeding box 39 is greater than that of the primary feeding box 25. According to the size of the gasifier, each feeding can satisfy the raw materials for the gasification load of the biomass crushed material gasifier for 1-2 hours.

[0059] Furthermore, a plurality of vibrators 8 are provided on the outer side of the secondary feeding box cone 7 , and the output ends of the programmable logic controller are respectively connected to the input ends of the plurality of vibrators 8 for controlling the start and stop of the vibrators 8 .

[0060] Furthermore, the distance between the lower end of the secondary water seal baffle ring 5 and the main body upper cover 42 of the gasifier is 20 mm, that is, there is no mechanical contact at the lower part of the secondary feeding box 39 .

[0061] Process and workflow: The piston rod of the first-level swing rod oil cylinder 31 is pushed out, the outer end of the first-level swing rod 27 is upward, and the inner end is downward, and the first-level feeding box sealing bell 37 is driven by the first-level connecting rod 34, and the first-level feeding box sealing flange 36 is separated from the first-level feeding box by a distance of 200 mm. After opening the lower opening of the first-level feeding box 25, the feed lifter 2 and the raw material inlet on the first-level feeding box upper cover 24 connected by the feed lifter outlet 24 are started, and the biomass fragments with a fibrous shape of less than 30 mm or a block shape of less than 60 mm are directly dropped into the second-level feeding box 39 through the opened lower opening of the first-level feeding box 25 and the second-level feeding box inlet 38. After reaching the appropriate amount, the feed lifter 2 is stopped, and the piston rod of the first-level swing rod oil cylinder 31 is retracted to drive the outer end of the first-level swing rod 27 downward and the inner end upward, and the first-level feeding box sealing bell 37 is driven upward through the first-level connecting rod 34, so that its conical surface is in close contact with the inner circle right angle line of the first-level feeding box sealing flange 36 to achieve the effect of closing and sealing.

[0062] The primary charging box 25 and the primary charging box sealing bell linkage mechanism thereof mainly play the role of opening and closing the valve.

[0063] Then, the secondary charging box sealing bell jar linkage mechanism and the lower opening of the primary charging box 25 are opened in the same manner, the secondary charging box sealing bell jar 40 moves downward, and is separated from the contact distance of 200 mm with the secondary charging box sealing flange 41, and the lower opening of the secondary charging box 39 is opened. Then, the vibrator 8 is started to vibrate the secondary charging box 39, so that all the biomass fragments fall down, through the lower opening of the secondary charging box 39 and the main body feeding port 43, and fall into the cavity of the biomass fragments gasification furnace main body 44, meeting the rated load requirement of the biomass fragments gasification furnace.

[0064] During the vibration unloading process of the secondary feeding box 39, the four feeding box legs 9 are elastically supported by the rubber blocks 11, and the rubber blocks 11 absorb the amplitude and reduce noise at the same time.

[0065] The secondary feeding box 39 has no mechanical contact with the upper components and is provided with a primary water seal mechanism. The primary water seal tank is filled with water to the water level of the primary overflow pipe 18. The primary water seal baffle ring 16 is inserted in the middle of the primary water seal tank filled with water, and has a sufficient distance from the primary water seal outer sleeve 15 and the primary water seal inner sleeve 17. There is no mechanical collision when the secondary feeding box 39 vibrates. The flexible water adapts to the mechanical amplitude and achieves a reliable sealing effect during the vibration feeding process.

[0066] The secondary feeding box 39 has no mechanical contact with the lower components and is provided with a secondary water seal mechanism. The secondary water seal tank is filled with water to the water level of the secondary overflow pipe 6. The secondary water seal baffle ring 5 is inserted in the middle of the secondary water seal tank filled with water, and has a sufficient distance from the secondary water seal outer sleeve 4 and the secondary water seal inner sleeve 3. There is no mechanical collision when the secondary feeding box 39 vibrates. The flexible water adapts to the mechanical amplitude and achieves a reliable sealing effect during the vibration feeding process.

[0067] The water levels of the primary and secondary water seal mechanisms are determined according to the gas pressure in the gasifier.

[0068] Example 2

[0069] It is substantially the same as Example 1, except that

[0070] The distance between the primary water seal baffle ring 16 and the secondary charging box upper cover 14 is 15 mm;

[0071] The distance between the lower end of the secondary water seal baffle ring 5 and the main body upper cover 42 of the gasifier is 15 mm.

[0072] Example 3

[0073] It is substantially the same as Example 1, except that

[0074] The distance between the primary water seal baffle ring 16 and the secondary charging box upper cover 14 is 25 mm;

[0075] The distance between the lower end of the secondary water seal baffle ring 5 and the main body upper cover 42 of the gasifier is 25 mm. The above is a detailed description of the implementation of the utility model. However, the utility model is not limited to the above implementation, and various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model.

Claims

1. A sealed feeding device for a biomass crushed material gasification furnace, characterized in that: It consists of the following components: The first-stage feeding box is welded in sequence by a first-stage feeding box lower cone, a first-stage feeding box shell, and a first-stage feeding box upper cover, and a first-stage feeding box sealing flange is welded at the bottom end of the first-stage feeding box lower cone; A material lifter, the top of which is provided with a downwardly inclined material lifter outlet pipe, the bottom of which is welded to the upper cover of the first-stage charging box and communicated with the inner cavity of the first-stage charging box, the middle and upper part of the material lifter is fixedly connected to the first-stage charging box shell through a first-stage charging box fixing plate, the middle part of the material lifter is fixedly welded to the gasifier body through the material lifter fixing plate, and the lower end of the material lifter is fixed to the ground foundation; The first-stage charging box sealing bell, which cooperates with the inner circle of the first-stage charging box sealing flange at a right angle, plays the role of line sealing; The first-level feeding box sealing bell linkage mechanism is composed of a first-level connecting rod, a first-level swing rod and a first-level swing rod oil cylinder. The first-level feeding box sealing bell is connected to the bottom end of the first-level connecting rod through the bell connecting shaft, and the upper end of the first-level connecting rod is connected to one end of the first-level swing rod through the connecting rod connecting shaft. A first-level swing rod fulcrum shaft is provided in the middle of the first-level swing rod, and the first-level swing rod fulcrum shaft is fixedly connected to the first-level support ear, and the first-level support ear is welded to the first-level feeding box shell. The other end of the first-level swing rod passes through the first-level feeding box and is connected to the piston rod of the first-level swing rod oil cylinder through the piston rod connecting shaft. The first-level swing rod oil cylinder is fixed to the first-level oil cylinder bracket through the cylinder fixed hinge shaft, and the first-level oil cylinder bracket is welded to the first-level feeding box shell; The primary water seal mechanism is a primary annular water groove formed by welding the lower end of the primary water seal outer sleeve and the lower end of the primary water seal inner sleeve on the upper cover of the secondary feeding box. The lower end of the primary water seal baffle ring is inserted into the primary annular water groove, and the primary water seal baffle ring is separated from the upper cover of the secondary feeding box; the upper end of the primary water seal baffle ring is welded to the outer circle of the annular upper cover of the primary water seal baffle ring, and the inner circle of the annular upper cover of the primary water seal baffle ring is welded to the outer side wall of the lower cone of the primary feeding box; The secondary feeding box is welded in sequence by a secondary feeding box upper cover, a secondary feeding box shell and a secondary feeding box cone. A secondary feeding box sealing flange is welded at the bottom of the secondary feeding box cone. The secondary feeding box upper cover is provided with a secondary feeding box inlet, and the secondary feeding box inlet is matched with the bottom of the lower cone of the primary feeding box. The secondary feeding box is elastically supported by four symmetrically arranged feeding box legs, and the bottom of the feeding box legs is fixedly connected to the main body upper cover of the gasifier. The upper part of the feeding box legs is provided with a support plate, a rubber block with a center hole, and a rubber block pressing plate in sequence from bottom to top, and is fixed by a bolt rod welded on the center of the support plate, passing through the rubber block with a center hole and the rubber block pressing plate. The rubber block pressing plate is welded to the secondary feeding box shell, and the bottom of the secondary feeding box cone is matched with the position of the main feeding port arranged on the main body of the gasifier. The secondary charging box sealing bell housing is matched at right angles with the inner hole of the secondary charging box sealing flange to play a line sealing role; The secondary charging box sealing bell linkage mechanism is composed of a secondary connecting rod, a secondary swing rod and a secondary swing rod oil cylinder. The secondary charging box sealing bell is connected to the bottom end of the secondary connecting rod through a bell connecting shaft, and the upper end of the secondary connecting rod is connected to one end of the secondary swing rod through a connecting rod connecting shaft. A secondary swing rod fulcrum shaft is provided in the middle of the secondary swing rod, and the secondary swing rod fulcrum shaft is fixedly connected to the secondary support ear. The secondary support ear is welded to the secondary charging box shell. The other end of the secondary swing rod passes through the secondary charging box and is connected to the piston rod of the secondary swing rod oil cylinder through the piston rod connecting shaft. The secondary swing rod oil cylinder is fixed to the secondary cylinder bracket through the cylinder fixed hinge shaft, and the secondary cylinder bracket is welded to the secondary charging box shell. The secondary water seal mechanism comprises the lower end of the secondary water seal inner sleeve and the lower end of the secondary water seal outer sleeve welded to the main body upper cover of the gasifier to form a secondary annular water groove, the lower end of the secondary water seal baffle ring is inserted into the secondary annular water groove, the lower end of the secondary water seal baffle ring is separated from the main body upper cover of the gasifier, and the upper end of the secondary water seal baffle ring is welded to the outer side wall of the secondary feeding box cone; A programmable logic controller, wherein the output end of the programmable logic controller is respectively connected to the input end of the first-stage rocker arm cylinder and the input end of the second-stage rocker arm cylinder, and is used to control the start and stop of the first-stage rocker arm cylinder and the second-stage rocker arm cylinder.

2. A sealed feeding device for a biomass crushed material gasification furnace according to claim 1, characterized in that: A plurality of columns are evenly welded on the main body upper cover of the gasifier, and the tops of the columns are welded to the shell of the first-stage charging box for auxiliary support and suspension of the first-stage charging box.

3. A sealed feeding device for a biomass crushed material gasification furnace according to claim 1, characterized in that: The distance between the primary water seal baffle ring and the secondary charging box upper cover is 15-25 mm.

4. A sealed feeding device for a biomass crushed material gasification furnace according to claim 1, characterized in that: The volume of the secondary feeding box is greater than the volume of the primary feeding box.

5. The sealed feeding device for a biomass crushed material gasification furnace according to claim 1, characterized in that: A plurality of vibrators are arranged on the outer side of the cone of the secondary feeding box, and the output end of the programmable logic controller is respectively connected to the input end of the plurality of vibrators for controlling the start and stop of the vibrators.

6. The sealed feeding device for a biomass crushed material gasification furnace according to claim 1, characterized in that: The distance between the lower end of the secondary water seal baffle ring and the main body upper cover of the gasifier is 15-25 mm.

7. The sealed feeding device for a biomass crushed material gasification furnace according to claim 1, characterized in that: A first-level overflow pipe is arranged on the upper part of the first-level water seal jacket.

8. The sealed feeding device for a biomass crushed material gasification furnace according to claim 1, characterized in that: A secondary overflow pipe is welded on the upper part of the secondary water seal outer sleeve.

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