Wood chip powder ejector

Abstract

The utility model provides a sawdust powder ejector, which belongs to the technical field of combustion furnace feeding equipment, and comprises an air inlet pipeline arranged at the air outlet end of a high-pressure fan, a suction cabin arranged on the surface of the front part of the air inlet pipeline, a first trapezoidal air pipe arranged at the front end of the air inlet pipeline, and a nozzle arranged at the front end of the first trapezoidal air pipe, a feeding pipeline is arranged on the upper portion of the first trapezoidal air pipe and penetrates through the top wall of the suction cabin, a second trapezoidal air pipe is arranged at the front end of the suction cabin, a throat pipe is arranged on an air outlet pipeline of the second trapezoidal air pipe, and a diffusion pipeline is arranged at the air outlet end of the throat pipe. High-pressure air generated by the high-pressure fan enters the first trapezoidal air pipe through the air inlet pipeline and then forms high-speed air jet flow through the nozzle, and at the moment, wood chip powder is sucked into the suction cabin after passing through the discharging end of the inclined hopper; and the materials and air are mixed at a high speed under a Venturi effect field formed by the high-speed airflow, enter the diffusion pipe through the throat pipe, and are continuously conveyed forwards until the materials are combusted in the combustion furnace.

Description

Technical Field

[0001] This utility model relates to the technical field of combustion furnace feeding equipment, specifically to a wood chip powder injector. Background Technology

[0002] With the continuous development of the biomass energy sector, a large amount of agricultural residues are being fully utilized. Agricultural and forestry residues such as rice husks, corn husks, and wood chips can be processed and used as raw materials for biomass combustion engines to generate electricity or provide heating, thereby reducing landfill waste and providing renewable energy.

[0003] Related technologies in the industrial heat industry: Taking biomass burners as an example, dried wood, corn husks, wood chips and other materials can be used to provide heat energy, which is more environmentally friendly than coal or gas. When using wood chips as the combustion medium, screw conveyors are mostly used to send the wood chips into the combustion furnace for combustion.

[0004] However, during the process of feeding the combustion furnace using a screw conveyor, there is a gap between the discharge end of the screw conveyor and the feed inlet of the combustion furnace, which makes it difficult for the wood chips to directly enter the combustion furnace. As a result, the wood chips can only burn at the edge of the furnace, making it difficult for the wood chips to burn completely inside the combustion furnace. Some longer combustion furnaces are inconvenient to use. To solve the above problems, a wood chip injector is proposed. Utility Model Content

[0005] In view of this, the present invention provides a wood chip powder injector. The present invention uses a high-pressure blower to generate high-pressure air, which enters the first trapezoidal air duct through the air inlet pipe and then forms a high-speed air jet through the nozzle. At this time, the wood chip powder is sucked into the suction chamber after passing the discharge end of the inclined hopper. Under the Venturi effect field formed by the high-speed airflow, the material and air are mixed at high speed and enter the diffuser through the throat pipe, and are continuously conveyed forward until they are burned in the combustion furnace.

[0006] To solve the above-mentioned technical problems, this utility model provides a wood chip powder ejector, including an air inlet pipe provided at the air outlet of a high-pressure blower, an intake chamber provided on the front surface of the air inlet pipe, a first trapezoidal air duct provided at the front end of the air inlet pipe, a nozzle provided at the front end of the first trapezoidal air duct, a feeding pipe provided at the upper part of the first trapezoidal air duct, the feeding pipe passing through the top wall of the intake chamber, a second trapezoidal air duct provided at the front end of the intake chamber, a throat provided at the air outlet of the second trapezoidal air duct, a diffusion pipe provided at the air outlet end of the throat, and the end of the diffusion pipe near the throat being narrower than the end of the diffusion pipe away from the throat.

[0007] The feeding pipe includes an inclined hopper set at the top of the suction chamber and a vertically set vertical hopper. The inclined hopper is connected to the suction chamber and is used to allow the wood chips entering the suction chamber to slide down to the air outlet of the first trapezoidal air duct, thereby reducing the accumulation of wood chips at the rear end of the first trapezoidal air duct. The vertical hopper is welded to the top of the inclined hopper and is used to supply material to the inclined hopper for easy connection with the feeding equipment.

[0008] The air inlet duct is equipped with a ventilation flange at the air inlet end. The ventilation flange is used to seal and connect the air inlet duct to the air outlet end of the high-pressure blower. The ventilation flange is connected to the air outlet end of the high-pressure blower. A first bracket is provided at the bottom of the throat pipe to support the throat pipe. A second bracket is provided at the bottom of the high-pressure blower to support and fix the high-pressure blower. A third bracket is provided at the bottom of the suction chamber to support the suction chamber.

[0009] The lower part of the first trapezoidal air duct is equipped with a waste inlet, which is used to collect wood chips that are not swept up by the first trapezoidal air duct. The waste inlet passes through the lower surface of the suction chamber, and the bottom of the waste inlet is connected to a discharge pipe. The discharge pipe is used to allow the wood chips in the waste inlet to fall into the collection box. The discharge end of the discharge pipe is equipped with a collection box, which is used to collect the wood chips in the discharge pipe, thereby preventing the wood chips that are not swept up by the first trapezoidal air duct from accumulating and being sucked into the chamber, and also facilitating the continued use of the wood chips.

[0010] The discharge pipe is symmetrically equipped with a guide rail inside. The guide rail is used for the baffle to move inside the discharge pipe. Each guide rail is fixed to the inner wall of the discharge pipe. A baffle is installed between the slots of the guide rail. The baffle is used to control whether the accumulated sawdust falls into the collection box. The edge of the baffle slides in fit with the slot on the guide rail.

[0011] One end of the baffle is fixedly equipped with a handle through the discharge pipe. The handle is used to facilitate the insertion and removal of the baffle. The other end of the baffle is equipped with a sealing plate through the discharge pipe. The sealing plate is used to seal the baffle to prevent it from falling off. The sealing plate is in close contact with the baffle.

[0012] A first positioning plate is provided on each of the left and right sides of the handle. The first positioning plate is used to block the front end of the guide rail and limit the position of the baffle. Each first positioning plate corresponds to the guide rail on the same side. The first positioning plate blocks the end of the guide rail. A first threaded hole is provided at each of the four corners of each first positioning plate. The first threaded hole is used to fix the first bolt. The first threaded hole passes through the first positioning plate and is embedded in the pipe wall of the discharge pipe. The first bolt is provided in the first threaded hole. The first bolt is used to connect the first positioning plate to the discharge pipe.

[0013] A second positioning plate is provided on each of the left and right sides of the sealing plate. Each second positioning plate corresponds to the guide rail on the same side. The second positioning plate is used to block the rear end of the guide rail and limit the position of the baffle. The second positioning plate blocks the end of the guide rail. A second threaded hole is provided at each of the four corners of each second positioning plate. The second threaded hole is used to fix the second bolt. The second threaded hole passes through the second positioning plate and is embedded in the pipe wall of the discharge pipe. The left and right ends of the sealing plate are welded and fixed to a second positioning plate respectively. The second bolt is provided in the second threaded hole. The second bolt is used to connect the second positioning plate to the discharge pipe.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0015] 1. During operation, the high-pressure air generated by the high-pressure blower enters the first trapezoidal air duct through the air inlet pipe, and then forms a high-speed air jet through the nozzle. At this time, the wood chips are sucked into the suction chamber after passing the discharge end of the inclined hopper. Under the Venturi effect field formed by the high-speed airflow, the material and air are mixed at high speed and enter the diffuser through the throat pipe, and are continuously conveyed forward until they are burned in the combustion furnace.

[0016] 2. The baffle is used to control whether the accumulated sawdust falls into the collection box. When a certain amount is stored, the baffle is pulled out to allow the sawdust to enter the collection box. When the baffle is closed, it can play a sealing role to prevent the opening of the discharge pipe from affecting the air pressure of the suction chamber.

[0017] 3. When sawdust enters the guide rail, the second positioning plate and sealing plate can be removed, and the first positioning plate can be removed at the same time. Pull out the baffle by the handle to allow the sawdust to enter the collection box. Some of the sawdust in the guide rail can be cleaned with tools. After cleaning, reinstall according to the same steps. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This utility model Figure 2 A magnified view of part A;

[0020] Figure 3 This is a schematic diagram of the rear view structure of this utility model;

[0021] Figure 4 This utility model Figure 3 A magnified view of part B;

[0022] Figure 5 This is a cross-sectional view of the main body of this utility model;

[0023] Figure 6 This is a side sectional view of the present invention;

[0024] Figure 7 This utility model Figure 6 A magnified view of part C.

[0025] Explanation of reference numerals in the attached drawings: 100, high-pressure blower; 101, air inlet duct; 102, throat; 103, diffuser duct; 104, ventilation flange; 105, first support; 106, second support; 107, third support; 200, suction chamber; 201, first trapezoidal duct; 202, nozzle; 203, feed duct; 204, second trapezoidal duct; 205, inclined hopper; 206, vertical hopper; 300, waste outlet; 301, discharge duct; 302, collection box; 303, guide rail; 304, baffle; 305, handle; 306, sealing plate; 400, first positioning plate; 401, first threaded hole; 402, first bolt; 403, second positioning plate; 404, second threaded hole; 405, second bolt. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-7 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0027] like Figure 1-7As shown: This embodiment provides a wood chip powder ejector, including an air inlet pipe 101 at the outlet of a high-pressure blower 100. The outlet pipe of the high-pressure blower 100 is connected to the air inlet pipe 101 via a ventilation flange 104. A suction chamber 200 is provided on the front surface of the air inlet pipe 101. The rear end of the suction chamber 200 has an opening of the same size as the air inlet pipe 101. After the air inlet pipe 101 is inserted into the suction chamber 200, the connection gap is welded and sealed. A first trapezoidal duct 201 is provided at the front end of the air inlet pipe 101. The first trapezoidal duct 201 is welded and fixed to the air inlet pipe 101. The smaller opening of the first trapezoidal duct 201 is its air outlet. A nozzle 202 is provided at the front end of the first trapezoidal duct 201. The nozzle 202 is bolted or welded to the air outlet of the first trapezoidal duct 201. The upper part of the first trapezoidal air duct 201 is provided with a feed pipe 203. The inner wall of the feed pipe 203 is polished. The feed pipe 203 passes through the top wall of the suction chamber 200. The front end of the suction chamber 200 is provided with a second trapezoidal air duct 204. The small opening of the second trapezoidal air duct 204 is the air outlet. The air outlet of the second trapezoidal air duct 204 is provided with a throat 102. The throat 102 is used to connect the suction chamber 200 and the diffusion pipe 103. The throat 102 is used to circulate the medium after the gas and wood chips are mixed. The air outlet of the throat 102 is provided with a diffusion pipe 103. The narrower end of the diffusion pipe 103 is welded to the throat 102. The end of the diffusion pipe 103 near the throat 102 is narrower than the end of the diffusion pipe 103 away from the throat 102. The inner walls of the throat 102 and the diffusion pipe 103 can be coated with anti-corrosion material.

[0028] When in use, the high-pressure blower 100 is started, so that the high-pressure airflow is blown into the air outlet of the first trapezoidal air duct 201 through the air inlet pipe 101, and then discharged through the nozzle 202. Wood chips are introduced through the feed pipe 203. The wood chips fall into the air outlet of the first trapezoidal air duct 201 through the inclined hopper 205 in the feed pipe 203, and then form a high-speed air jet through the nozzle 202. At this time, the wood chip powder is sucked into the suction chamber 200 after passing the discharge end of the inclined hopper 205. Under the Venturi effect field formed by the high-speed airflow, the material and air are mixed at high speed and enter the diffuser through the throat pipe 102, and are continuously conveyed forward until they are burned in the combustion furnace.

[0029] This embodiment provides a wood chip powder ejector.

[0030] like Figure 5As shown: The feed pipe 203 includes an inclined hopper 205 and a vertically arranged vertical hopper 206, which are inclinedly arranged at the top of the suction chamber. The inclined hopper 205 is welded to the suction chamber 200 and is used to allow the wood chips entering the suction chamber 200 to slide down to the air outlet of the first trapezoidal air duct 201. The inclined hopper 205 is welded to the vertical hopper 206 and has a flange at the top for connection with the feeding equipment, thereby reducing the accumulation of wood chips caused by falling into the rear end of the first trapezoidal air duct 201. The vertical hopper 206 is welded to the top of the inclined hopper 205 and is used to feed the inclined hopper 205 for easy connection with the feeding equipment. The discharge end of the inclined hopper 205 corresponds to the air outlet of the first trapezoidal air duct 201.

[0031] Its effects are as follows: the inclined hopper 205 is used to allow the wood chips entering the suction chamber 200 to slide down to the air outlet of the first trapezoidal air duct 201, and the vertical hopper 206 is used to supply materials to the inclined hopper 205 for easy connection with the feeding equipment.

[0032] like Figure 3 , 5 As shown: The air inlet duct 101 is provided with a ventilation flange 104 at the air inlet end. The air inlet duct 101 and the ventilation flange 104 are connected by bolts for sealing. The ventilation flange 104 is used to seal and connect the air inlet duct 101 and the air outlet end of the high-pressure blower 100. The ventilation flange 104 is connected to the air outlet end of the high-pressure blower 100. The bottom of the throat duct 102 is provided with a first bracket 105. The top of the first bracket 105 is connected and fixed to the bottom shell of the throat duct 102 with angle iron and bolts. The first bracket 105 is used to support the throat duct 102. The bottom of the high-pressure blower 100 is provided with a second bracket 106. The second bracket 106 is connected and fixed to the bottom frame of the high-pressure blower 100 with bolts. The second bracket 106 is used to support and fix the high-pressure blower 100. The bottom of the suction chamber 200 is provided with a third bracket 107. The third bracket 107 is connected and fixed to the outer wall of the suction chamber 200 with angle iron. The third bracket 107 is used to support the suction chamber 200.

[0033] Its effects are as follows: the ventilation flange 104 is used to seal and connect the air inlet pipe 101 and the air outlet of the high-pressure blower 100; the first bracket 105 is used to support the throat pipe 102; the second bracket 106 is used to support and fix the high-pressure blower 100; and the third bracket 107 is used to support the suction chamber 200, thereby making the height of the equipment uniform.

[0034] like Figure 1 , 3As shown in Figures 5 and 6: A waste inlet 300 is provided at the lower part of the first trapezoidal air duct 201. The waste inlet 300 is used to collect wood chips that are not swept by the first trapezoidal air duct 201. The waste inlet 300 passes through the lower surface of the suction chamber 200. A discharge pipe 301 is provided at the bottom of the waste inlet 300. The waste inlet 300 passes through the lower surface of the suction chamber 200 and is connected to the discharge pipe 301. The discharge pipe 301 is used to allow the wood chips in the waste inlet 300 to fall into the collection box 302. A collection box 302 is provided at the discharge end of the discharge pipe 301. The collection box 302 can be mobile or portable.

[0035] Its effect is as follows: the collection box 302 is used to collect the sawdust in the discharge pipe 301, thereby preventing sawdust that has not been blown by the first trapezoidal air duct 201 from accumulating and being sucked into the chamber 200, and also making it convenient to pour the sawdust into the feed pipe 203 for reuse.

[0036] like Figure 5 , 6 As shown in Figure 7: A guide rail 303 is symmetrically arranged inside the discharge pipe 301. The guide rail 303 is used for the baffle 304 to move inside the discharge pipe 301. The inner wall of the discharge pipe 301 is welded and fixed to the guide rail 303 or connected and fixed with bolts. Each guide rail 303 is fixed to the inner wall of the discharge pipe 301. A baffle 304 is arranged between the slots of the guide rail 303. The edge of the baffle 304 is polished. The front and back sides of the baffle 304 can be coated with anti-corrosion material. The edge of the baffle 304 slides in fit with the slot on the guide rail 303.

[0037] Its effect is as follows: the baffle 304 is used to control whether the accumulated wood chips fall into the collection box 302. When a certain amount is stored, the baffle 304 is pulled out to allow the wood chips to enter the collection box 302. When the baffle 304 is closed, it can play a sealing role to prevent the opening of the discharge pipe 301 from affecting the air pressure of the suction chamber 200.

[0038] like Figure 1 , 2 As shown in Figures 5, 6, and 7: A first positioning plate 400 is provided on each of the left and right sides of the handle 305. The first positioning plate 400 is used to block the front end of the guide rail 303 and limit the position of the baffle 304. Each first positioning plate 400 corresponds to the guide rail 303 on the same side. The first positioning plate 400 blocks the end of the guide rail 303. A first threaded hole 401 is provided at each of the four corners of each first positioning plate 400. The first threaded hole 401 is used to fix the first bolt 402. The first threaded hole 401 passes through the first positioning plate 400 and is embedded in the pipe wall of the discharge pipe 301. The first bolt 402 is provided in the first threaded hole 401. The first bolt 402 is used to connect the first positioning plate 400 to the discharge pipe 301.

[0039] The effect is as follows: the first bolt 402 passes through the first threaded hole 401 and is fixed to the first threaded hole 401 on the discharge pipe 301, thereby fixing the first positioning plate 400 to the discharge pipe 301, thereby limiting the groove of the guide rail 303 by the first positioning plate 400, and also limiting the baffle 304 to prevent the baffle 304 from loosening and falling.

[0040] like Figure 3 , 4 As shown in Figures 5 and 6: A second positioning plate 403 is provided on each of the left and right sides of the sealing plate 306. Each second positioning plate 403 corresponds to the guide rail 303 on the same side. The second positioning plate 403 is used to seal the rear end of the guide rail 303 and limit the position of the baffle 304. The second positioning plate 403 seals the end of the guide rail 303. A second threaded hole 404 is provided at each of the four corners of each second positioning plate 403. The second threaded holes 404 are used to fix the second bolts 405. The second threaded holes 404 pass through the second positioning plate 403 and embed into the wall of the discharge pipe 301. Inside, the left and right ends of the sealing plate 306 are respectively welded and fixed to a second positioning plate 403. A second bolt 405 is provided in the second threaded hole 404. The second bolt 405 is used to connect the second positioning plate 403 to the discharge pipe 301. The second bolt 405 passes through the second threaded hole 404 and is fixed to the second threaded hole 404 on the discharge pipe 301, thereby fixing the second positioning plate 403 to the discharge pipe 301. This allows the second positioning plate 403 to limit the groove of the guide rail 303 and also limit the baffle 304 to prevent it from loosening and falling off.

[0041] The effect is as follows: when sawdust enters the guide rail 303, the second positioning plate 403 and the sealing plate 306 can be removed, and the first positioning plate 400 can be removed by pulling out the baffle 304 through the handle, so that the sawdust enters the collection box 302. Some of the sawdust in the guide rail 303 can be cleaned with tools. After cleaning, the same steps can be followed to reinstall.

[0042] Working principle: Start the high-pressure blower 100 to blow high-pressure airflow into the outlet end of the first trapezoidal air duct 201 through the air inlet pipe 101, and then discharge it through the nozzle 202. Wood chips are introduced through the feed pipe 203. The wood chips fall into the outlet end of the first trapezoidal air duct 201 through the inclined hopper 205 in the feed pipe 203, and then form a high-speed air jet through the nozzle 202. At this time, the wood chip powder is sucked into the suction chamber 200 after passing the discharge end of the inclined hopper 205. Under the Venturi effect field formed by the high-speed airflow, the material and air are mixed at high speed and enter the diffuser through the throat 102, and are continuously conveyed forward until they are burned in the combustion furnace. When wood chips enter the guide rail 303, the second positioning plate 403 and the sealing plate 306 can be removed. At the same time, the first positioning plate 400 can be removed and the baffle 304 can be pulled out by the handle, so that the wood chips enter the collection box 302. Some of the wood chips in the guide rail 303 can be cleaned with tools. After cleaning, the same steps can be repeated.

[0043] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A wood chip powder material injector, comprising an air inlet pipe (101) arranged at the air outlet end of a high-pressure air blower (100), characterized in that: The front surface of the air inlet pipe (101) is provided with a suction chamber (200), the front end of the air inlet pipe (101) is provided with a first trapezoidal air pipe (201), the front end of the first trapezoidal air pipe (201) is provided with a nozzle (202), the upper part of the first trapezoidal air pipe (201) is provided with a feeding pipe (203), the feeding pipe (203) penetrates the top wall of the suction chamber (200), the front end of the suction chamber (200) is provided with a second trapezoidal air pipe (204), the air outlet pipe of the second trapezoidal air pipe (204) is provided with a throat pipe (102), the air outlet end of the throat pipe (102) is provided with a diffusion pipe (103), and the end of the diffusion pipe (103) close to the throat pipe (102) is narrower than the end of the diffusion pipe (103) away from the throat pipe (102).

2. A wood flour powder injector as claimed in claim 1, characterized in that: The feeding pipe (203) comprises an inclined hopper (205) obliquely arranged on the top of the suction chamber (200) and a vertical hopper (206) vertically arranged, the inclined hopper (205) is communicated with the suction chamber (200), and the vertical hopper (206) is welded on the top of the inclined hopper (205).

3. A wood flour powder injector as claimed in claim 2, characterized in that: The air inlet end of the air inlet pipe (101) is provided with a ventilation flange (104), the ventilation flange (104) is communicated with the air outlet end of the high-pressure fan (100), the bottom of the throat pipe (102) is provided with a first support (105), the bottom of the high-pressure fan (100) is provided with a second support (106), and the bottom of the suction chamber (200) is provided with a third support (107).

4. A wood flour powder injector as claimed in claim 3, characterized in that: The lower part of the first trapezoidal air pipe (201) is provided with a waste port (300), the waste port (300) penetrates the lower surface of the suction chamber (200), the bottom of the waste port (300) is communicated with a discharge pipe (301), and the discharge end of the discharge pipe (301) is provided with a collecting box (302).

5. A wood flour powder injector as claimed in claim 4, characterized in that: The inside of the discharge pipe (301) is symmetrically provided with a guide rail (303), each guide rail (303) is fixed with the inner wall of the discharge pipe (301), the guide rail (303) is provided with a baffle (304) between the notches, and the edge of the baffle (304) is in sliding fit with the notch on the guide rail (303).

6. A wood flour powder injector as claimed in claim 5, characterized in that: One end of the baffle (304) is fixedly provided with a handle (305) penetrating the discharge pipe (301), and the other end of the baffle (304) is provided with a sealing plate (306) penetrating the discharge pipe (301), and the sealing plate (306) is in close contact with the baffle (304).

7. A wood flour powder injector as claimed in claim 6, characterized in that: The left and right sides of the handle (305) are respectively provided with a first positioning plate (400), each of the first positioning plates (400) corresponds to the guide rail (303) on the same side, the first positioning plate (400) blocks the end of the guide rail (303), and four corners of each of the first positioning plates (400) are respectively provided with a first threaded hole (401) embedded in the pipe wall of the material discharging pipeline (301) through the first positioning plate (400), and a first bolt (402) is arranged in the first threaded hole (401).

8. A wood flour powder injector as claimed in claim 7, characterized in that: The left and right sides of the sealing plate (306) are respectively provided with a second positioning plate (403), each of the second positioning plates (403) corresponds to the guide rail (303) on the same side, the second positioning plate (403) blocks the end of the guide rail (303), and four corners of each of the second positioning plates (403) are respectively provided with a second threaded hole (404) embedded in the pipe wall of the material discharging pipeline (301) through the second positioning plate (403), the left and right ends of the sealing plate (306) are respectively welded and fixed with one of the second positioning plates (403), and a second bolt (405) is arranged in the second threaded hole (404).

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