A porous granular ammonium nitrate and diesel mixed material feeding device

Abstract

The embodiment of the present application provides a porous granular ammonium nitrate and diesel mixing feeding device, which relates to the technical field of porous granular ammonium nitrate mixing. A porous granular ammonium nitrate and diesel mixing feeding device comprises: a mixing transmission mechanism, a power transmission mechanism, the power transmission mechanism is located at the front end of the mixing transmission mechanism, a dust removal mechanism, the dust removal mechanism is located at the upper part of the front end of the mixing transmission mechanism, the dust removal mechanism is located at the rear end of the power transmission mechanism, the power transmission mechanism drives the dust removal mechanism to move up and down to form a negative pressure, so that the dust particles in the raw materials are lifted and filtered, and an oil injection mechanism, the oil injection mechanism is located on one side of the front end of the mixing transmission mechanism, and the oil injection mechanism is located at the lower end of the power transmission mechanism. The equipment realizes efficient dust removal of porous granular nitric acid, improves its purity, and also improves the mixing quality of porous granular nitric acid and diesel.

Description

Technical Field

[0001] The present application relates to the technical field of porous granular ammonium nitrate mixing, and in particular to a porous granular ammonium nitrate and diesel mixing feeding device. Background Art

[0002] Porous granular ammonium oil-fuel explosive is a new type of ammonium nitrate explosive, whose main components include porous granular ammonium nitrate and diesel. It is widely used in industrial production. Compared with traditional explosives, ammonium oil-fuel explosive is less sensitive, less likely to explode, and safer.

[0003] In the process of mixing porous granular ammonium nitrate and diesel, it is usually transported and mixed with diesel through an auger stirring blade. Most of the time, the dust and fine impurities inside the porous granular ammonium nitrate cannot be effectively reduced. The residual dust and impurities will reduce the purity of the porous granular ammonium nitrate, thereby affecting its performance. At the same time, the presence of impurities may cause uneven mixing of diesel and ammonium nitrate, affecting the overall effect and safety of the fuel.

[0004] At the same time, in the process of mixing porous granular ammonium nitrate and diesel through auger blades, the positions of the fuel injection ports are mostly too fixed, and the injection positions are mostly concentrated in a certain area, making it difficult to ensure that the diesel is evenly sprayed onto the interior and other surfaces of the ammonium nitrate particles, making it difficult to achieve uniform mixing. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a porous granular ammonium nitrate and diesel mixing feeding device, which can make the wind blow the falling porous granular ammonium nitrate and reduce the dust and impurities inside it, improve the purity, disturb the falling of the porous granular ammonium nitrate, slow down the falling speed, and allow the diesel to have enough time to fully mix with it, avoid unevenness, and make the fuel injection head constantly change its position to ensure that the diesel is evenly sprayed on the inside and surface of the ammonium nitrate particles to achieve uniform mixing.

[0006] A porous granular ammonium nitrate and diesel mixed material feeding device according to an embodiment of the present application includes:

[0007] Mixing material transmission mechanism;

[0008] A power transmission mechanism, the power transmission mechanism being located at the front end of the mixing transmission mechanism;

[0009] A dust removal mechanism, the dust removal mechanism is located at the upper part of the front end of the mixing and conveying mechanism, the dust removal mechanism is located at the rear end of the power transmission mechanism, the power transmission mechanism drives the dust removal mechanism to move up and down to form a negative pressure, so that the dust particles in the raw materials are lifted and filtered;

[0010] The oil injection mechanism is located at one side of the front end of the mixing and transmission mechanism, and the oil injection mechanism is located at the lower end of the power transmission mechanism. The power transmission mechanism enables the oil injection mechanism to cyclically spray oil to multiple positions of the raw material.

[0011] According to some embodiments of the present application, the mixing transmission mechanism includes a base plate and a mixing barrel, a servo motor is fixedly connected to the middle part of the front end of the upper surface of the base plate, the mixing barrel is fixedly connected to the middle part of the upper surface of the base plate, the output end of the servo motor is fixedly connected to a first rotating rod, the outer wall of the rear end of the first rotating rod is fixedly connected to a first sprocket, the internal rotation of the mixing barrel is connected to an auger stirring rod, the front end of the auger stirring rod is fixedly connected to a second sprocket, and the outer walls of the first sprocket and the second sprocket are sleeved with a first chain.

[0012] According to some embodiments of the present application, a discharge port is fixedly connected to the lower portion of the rear end of the mixing barrel.

[0013] According to some embodiments of the present application, the power transmission mechanism includes a mounting frame and a mixing hood, the lower surface of the mounting frame is fixedly connected to the front end of the upper surface of the base plate, the upper end of the mounting frame is rotatably connected to the second rotating rod, the outer wall of the front end of the second rotating rod is fixedly connected to the third sprocket, the outer wall of the middle part of the first rotating rod is fixedly connected to the fourth sprocket, the outer walls of the third sprocket and the fourth sprocket are sleeved with a second chain, the rear end of the upper part of the mounting frame is rotatably connected to the transmission rod, the lower end of the transmission rod extends to the interior of the mixing hood, the outer wall of the rear end of the second rotating rod is fixedly connected to the first bevel gear, the outer wall of the upper end of the transmission rod is fixedly connected to the second bevel gear, and the first bevel gear and the second bevel gear are meshed with each other.

[0014] According to some embodiments of the present application, support plates are fixedly connected to both sides of the front end of the upper surface of the bottom plate, and the lower parts of the outer walls on both sides of the mixing hood are fixedly connected to the upper ends of the support plates.

[0015] According to some embodiments of the present application, the dust removal mechanism includes a negative pressure cover, a reciprocating threaded cylinder, a sealing circular plate and a positioning plate, the negative pressure cover is located at the center of the mixing cover, the lower end of the inner wall of the negative pressure cover is fixedly connected to an assembly plate, a plurality of the positioning plates are fixedly connected to the negative pressure cover and the outer walls of the assembly plate, the end of the positioning plate away from the negative pressure cover is fixedly connected to the inner wall of the mixing cover, the lower end of the transmission rod is rotatably connected to the middle part of the upper surface of the assembly plate, the reciprocating threaded cylinder is fixedly connected to the outer wall of the lower end of the transmission rod, the lower end of the reciprocating threaded cylinder is sleeved with a two-way sliding block, the outer walls of the two-way sliding blocks are fixedly connected to a plurality of connecting frames, the upper surface of the connecting frame is fixedly connected to a connecting rod at one end away from the two-way sliding block, the upper surface of the connecting rod is fixedly connected to the lower surface of the sealing circular plate, and a plurality of first one-way valve pipes are fixedly connected to the edge of the upper surface of the sealing circular plate;

[0016] The outer wall of the upper end of the negative pressure hood is fixedly connected with a plurality of gas diversion boxes, the middle part of the upper end of the gas diversion box is fixedly connected with a second one-way valve tube, the upper end of the second one-way valve tube extends to the inner top of the negative pressure hood, the upper end of the mixing hood is fixedly connected with a plurality of dust removal hoods, the interior of the dust removal hood is slidably connected with a dust removal rack, the middle part of the outer wall of the dust removal hood is through-connected with a multi-way switching tube, the end of the multi-way switching tube away from the dust removal hood passes through a positioning plate and extends to the lower end of the negative pressure hood, the lower end of the inner wall of the negative pressure hood is fixedly connected with a plurality of third one-way valve tubes, and the end of the third one-way valve tube away from the middle part of the negative pressure hood is fixedly connected to the lower end of the multi-way switching tube.

[0017] According to some embodiments of the present application, the upper end of the negative pressure hood is fixedly connected to a material guide hood, the outer wall of the transmission rod near the upper end is fixedly connected to three material driving rods, and the lower surfaces of the material driving rods are slidably connected to the upper surface of the material guide hood.

[0018] According to some embodiments of the present application, a plurality of guide frames are fixedly connected to the middle portion of the upper surface of the assembly plate, and the connection frames are slidably connected to the outer walls of the guide frames respectively.

[0019] According to some embodiments of the present application, the oil injection mechanism includes an oil storage barrel, a high-pressure oil pump, a thick annular tube, a thin annular tube and an oil injection seat, the oil storage barrel and the high-pressure oil pump are respectively fixedly connected to one side of the upper surface of the bottom plate, the high-pressure oil pump is located at the rear end of the oil storage barrel, the thick annular tube is fixedly connected to the outer wall of the lower end of the mixing hood, the oil outlet of the high-pressure oil pump is fixedly connected to a first oil pipe, the upper end of the first oil pipe is connected through the thick annular tube, the oil suction port of the high-pressure oil pump is fixedly connected to a second oil pipe, the front end of the second oil pipe is connected through the oil storage barrel, the two thin annular tubes are fixedly connected to the inner wall of the lower end of the negative pressure hood, the inner wall of the thick annular tube is fixedly connected to a plurality of third oil pipes, the end of the third oil pipe away from the thick annular tube passes through the positioning plate and the assembly plate and extends to the inner bottom of the negative pressure hood, the pipe body of the thin annular tube is provided with a plurality of shunt pipes, and the upper ends of the third oil pipes are connected through the shunt pipes;

[0020] The plurality of fuel injection seats are fixedly connected to the outer wall of the lower end of the negative pressure cover, and the outer walls of the fuel injection seats are respectively provided with a plurality of first assembly holes and second assembly holes, the first assembly holes are fixedly connected to the first return spring at one end close to the middle of the negative pressure cover, the first return spring is fixedly connected to the mixing head at one end away from the middle of the negative pressure cover, the mixing head is fixedly connected to two return frames at one end close to the middle of the negative pressure cover, the second assembly holes are fixedly connected to the second return spring at one end away from the middle of the negative pressure cover, the second return spring is close to the middle of the negative pressure cover One end of each part is fixedly connected with a fuel injection head, one end of each fuel injection head close to the middle part of the negative pressure cover is connected with an elastic connecting tube, the lower end of each elastic connecting tube is connected with the thin annular tube, one end of each connecting frame close to the fuel injection seat is fixedly connected with an extrusion frame, one end of each extrusion frame close to the fuel injection seat is respectively fixedly connected with a plurality of extrusion frames and three extrusion round heads, each extrusion frame is slidably connected with the fuel injection seat, one end of each extrusion frame away from the fuel injection seat is slidably connected with the reset frame, and each extrusion round head is slidably connected with one end of each fuel injection head close to the middle part of the negative pressure cover.

[0021] According to some embodiments of the present application, one end of the elastic connecting tube away from the middle of the negative pressure cover is connected through a fuel injector, and the fuel injector is located inside the fuel injector head.

[0022] The beneficial effects of the present application are as follows: when in use, the porous granular ammonium nitrate is poured into the interior of the power transmission mechanism. At this time, when the two-way slider moves up and down on the outer wall of the reciprocating threaded barrel, the dust removal mechanism blows and adsorbs the dust and fine impurities inside the porous granular ammonium nitrate during the falling process, thereby greatly improving the purity of the porous granular ammonium nitrate. At the same time, the fuel injection mechanism will reduce the descending speed of the porous granular ammonium nitrate, and the fuel injection head will continuously change its position inside the porous granular ammonium nitrate, thereby ensuring that the diesel is evenly sprayed onto the interior and surface of the ammonium nitrate particles, rather than concentrated in a certain area, thereby achieving uniform mixing. Finally, under the action of the mixing transmission mechanism, the mixed diesel and porous granular ammonium nitrate are transmitted, wherein, by moving the two-way slider up and down on the outer wall of the reciprocating threaded barrel, one of the First, the porous granular ammonium nitrate is blown by the wind during the falling process, thereby reducing the content of dust and fine impurities inside the porous granular ammonium nitrate and improving the purity of the porous granular ammonium nitrate. Second, the porous granular ammonium nitrate is disturbed during the falling process, reducing the falling speed of the porous granular ammonium nitrate, so that the diesel has enough time to be fully mixed with the porous granular ammonium nitrate, avoiding the uneven mixing of diesel and porous granular ammonium nitrate. Third, the fuel injection head will continuously change its position inside the porous granular ammonium nitrate, thereby ensuring that the diesel is evenly sprayed on the inside and surface of the ammonium nitrate particles, rather than concentrated in a certain area, thereby achieving uniform mixing. Fourth, efficient dust removal of porous granular nitric acid is achieved, which improves its purity while also improving the mixing quality of porous granular nitric acid and diesel.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a right-view stereoscopic structural schematic diagram of a porous granular ammonium nitrate and diesel mixed material feeding device according to an embodiment of the present application;

[0026] Figure 2 It is a left-view stereoscopic structural schematic diagram of a porous granular ammonium nitrate and diesel mixed material feeding device according to an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of a front view of a three-dimensional structure of a mixing and conveying mechanism according to an embodiment of the present application;

[0028] Figure 4 is a schematic front view of a three-dimensional structure of a power transmission mechanism according to an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of a front sectional three-dimensional structure of a mixing hood according to an embodiment of the present application;

[0030] Figure 6 is a schematic diagram of a frontal sectional three-dimensional structure of a dust removal mechanism according to an embodiment of the present application;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of an assembly plate, a reciprocating threaded cylinder, a bidirectional slider, a connecting frame, a connecting rod, a sealing circular plate, a first one-way valve tube and a guide frame according to an embodiment of the present application;

[0032] Figure 8 is a schematic diagram of a front sectional three-dimensional structure of a power transmission mechanism according to an embodiment of the present application;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the dust cover, the dust removal frame, the transfer tube, the positioning plate and the third one-way valve tube according to an embodiment of the present application;

[0034] Fig.10 is a schematic diagram of the three-dimensional structure of the fuel injection mechanism according to an embodiment of the present application;

[0035] Fig.11 is a schematic diagram of a three-dimensional structure of a negative pressure hood according to an embodiment of the present application;

[0036] Fig.12 is a schematic diagram of the three-dimensional structure of a thick annular pipe and an oil injection seat according to an embodiment of the present application;

[0037] Fig.13 It is a schematic diagram of a partial cross-sectional three-dimensional structure of a fuel injection seat according to an embodiment of the present application.

[0038] Icons: 1. Mixing transmission mechanism; 101. Bottom plate; 102. Servo motor; 103. First rotating rod; 104. First sprocket; 105. Mixing barrel; 106. Auger stirring rod; 107. Second sprocket; 108. First chain; 109. Discharge port; 2. Power transmission mechanism; 201. Mounting frame; 202. Second rotating rod; 203. Third sprocket; 204. Fourth sprocket; 205. Second chain; 206. Support plate; 207. Mixing cover; 208. Transmission rod; 209. First bevel gear; 210. Second bevel gear; 3. Dust removal mechanism; 301. Negative pressure cover; 302. Material guide cover; 303. Assembly plate; 304. Reciprocating threaded barrel; 305. Bidirectional slider; 306. Connecting frame; 307. Connecting rod; 308. Sealing circular plate; 309. First one-way valve pipe; 310 , guide frame; 311, gas flow box; 312, second one-way valve pipe; 313, dust cover; 314, dust frame; 315, multi-way adapter pipe; 316, positioning plate; 317, third one-way valve pipe; 318, driving rod; 4, oil injection mechanism; 401, oil storage barrel; 402, high-pressure oil pump; 403, thick annular pipe; 404, first oil pipe; 405, second oil pipe; 406, thin annular pipe shaped tube; 407, the third oil pipe; 408, the shunt pipe; 409, the fuel injection seat; 410, the first assembly hole; 411, the second assembly hole; 412, the mixing head; 413, the first return spring; 414, the return frame; 415, the fuel injection head; 416, the second return spring; 417, the elastic connecting tube; 418, the extrusion frame; 419, the extrusion frame; 420, the extrusion round head; 421, the fuel injection nozzle. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0040] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] A porous granular ammonium nitrate and diesel mixed material feeding device according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0048] like Figure 1-Figure 13As shown, a porous granular ammonium nitrate and diesel mixture feeding device according to an embodiment of the present application includes: a mixture transmission mechanism 1, a power transmission mechanism 2, a dust removal mechanism 3 and a fuel injection mechanism 4.

[0049] like Figure 1 and Figure 2 As shown, a mixing transmission mechanism 1, a power transmission mechanism 2, the power transmission mechanism 2 is located at the front end of the mixing transmission mechanism 1, a dust removal mechanism 3, the dust removal mechanism 3 is located at the upper part of the front end of the mixing transmission mechanism 1, the dust removal mechanism 3 is located at the rear end of the power transmission mechanism 2, the power transmission mechanism 2 drives the dust removal mechanism 3 to move up and down to form a negative pressure, so that the dust particles in the raw material are lifted and filtered, and the oil injection mechanism 4, the oil injection mechanism 4 is located at one side of the front end of the mixing transmission mechanism 1, the oil injection mechanism 4 is located at the lower end of the power transmission mechanism 2, and the power transmission mechanism 2 enables the oil injection mechanism 4 to cyclically spray oil to multiple positions of the raw material.

[0050] When in use, the porous granular ammonium nitrate is poured into the interior of the power transmission mechanism 2. At this time, the two-way slider 305 moves up and down on the outer wall of the reciprocating threaded cylinder 304. The dust removal mechanism 3 will blow and adsorb the dust and fine impurities inside the porous granular ammonium nitrate during the falling process, thereby greatly improving the purity of the porous granular ammonium nitrate. At the same time, the fuel injection mechanism 4 will reduce the descending speed of the porous granular ammonium nitrate. At the same time, the fuel injection head 415 will continuously change its position inside the porous granular ammonium nitrate, thereby ensuring that the diesel is evenly sprayed on the interior and surface of the ammonium nitrate particles, rather than concentrated in a certain area, thereby achieving uniform mixing. Finally, under the action of the mixing transmission mechanism 1, the mixed diesel and porous granular ammonium nitrate are transmitted.

[0051] like Figure 3 As shown, the mixing and conveying mechanism 1 includes a base plate 101 and a mixing barrel 105, a servo motor 102 is fixedly connected to the middle part of the front end of the upper surface of the base plate 101, the mixing barrel 105 is fixedly connected to the middle part of the upper surface of the base plate 101, the output end of the servo motor 102 is fixedly connected to the first rotating rod 103, the outer wall of the rear end of the first rotating rod 103 is fixedly connected to the first sprocket 104, the internal rotation of the mixing barrel 105 is connected to an auger stirring rod 106, the front end of the auger stirring rod 106 is fixedly connected to the second sprocket 107, the outer walls of the first sprocket 104 and the second sprocket 107 are sleeved with a first chain 108, and the lower part of the rear end of the mixing barrel 105 is fixedly connected to a discharge port 109, wherein the auger stirring rod 106 can be rotated by starting the servo motor 102, thereby transmitting the diesel and porous granular ammonium nitrate raw materials after dust removal, oil injection and mixing.

[0052] like Figure 4As shown, the power transmission mechanism 2 includes a mounting frame 201 and a mixing cover 207. The lower surface of the mounting frame 201 is fixedly connected to the front end of the upper surface of the bottom plate 101. The upper end of the mounting frame 201 is rotatably connected to the second rotating rod 202. The outer wall of the front end of the second rotating rod 202 is fixedly connected to the third sprocket 203. The outer wall of the middle part of the first rotating rod 103 is fixedly connected to the fourth sprocket 204. The outer walls of the third sprocket 203 and the fourth sprocket 204 are sleeved with a second chain 205. The rear end of the upper part of the mounting frame 201 is rotatably connected to the transmission rod 208. The lower end of the transmission rod 208 extends to the interior of the mixing cover 207. The outer wall of the rear end of the second rotating rod 202 is fixedly connected to the first bevel gear 209. The outer wall of the upper end of the transmission rod 208 is fixedly connected to the second bevel gear 210. The first bevel gear 209 and the second bevel gear 210 are meshed with each other. The front end of the upper surface is fixedly connected with support plates 206 on both sides, and the lower parts of the outer walls on both sides of the mixing cover 207 are fixedly connected with the upper ends of the support plates 206. Specifically, when the diesel and porous granular ammonium nitrate raw materials are mixed, the first rotating rod 103 can drive the fourth sprocket 204 to rotate by starting the servo motor 102. At this time, the second rotating rod 202 starts to rotate under the action of the second chain 205 and the third sprocket 203. At this time, in the process of the first bevel gear 209 and the second bevel gear 210 meshing with each other, the transmission rod 208 starts to rotate, and then the porous granular ammonium nitrate can be conveniently put in by the staff through the upper end of the mixing cover 207, and then the diesel and porous granular ammonium nitrate are mixed inside the mixing cover 207, and then the mixed raw materials can be discharged into the mixing barrel 105 through the lower end of the mixing cover 207.

[0053] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9The dust removal mechanism 3 includes a negative pressure cover 301, a reciprocating threaded cylinder 304, a sealing circular plate 308 and a positioning plate 316. The negative pressure cover 301 is located at the center of the mixing cover 207. The lower end of the inner wall of the negative pressure cover 301 is fixedly connected to the assembly plate 303. A plurality of positioning plates 316 are fixedly connected to the outer walls of the negative pressure cover 301 and the assembly plate 303. The ends of the positioning plates 316 away from the negative pressure cover 301 are fixedly connected to the inner wall of the mixing cover 207. The lower end of the transmission rod 208 is rotatably connected to the middle part of the upper surface of the assembly plate 303. The reciprocating threaded cylinder 304 is fixedly connected to the outer wall of the lower end of the transmission rod 208. The lower end of the reciprocating threaded cylinder 304 is sleeved with a bidirectional slider 305. The outer wall of the bidirectional slider 305 is fixedly connected to a plurality of connection frames. The upper end of the connecting frame 306 is fixedly connected with a connecting rod 307 at one end away from the two-way slider 305, and the upper surface of the connecting rod 307 is fixedly connected to the lower surface of the sealing circular plate 308. The edge of the upper surface of the sealing circular plate 308 is fixedly connected with a plurality of first one-way valve tubes 309. The outer wall of the upper end of the negative pressure cover 301 is fixedly connected with a plurality of gas diversion boxes 311. The middle part of the upper end of the gas diversion box 311 is fixedly connected with a second one-way valve tube 312. The upper end of the second one-way valve tube 312 extends to the inner top of the negative pressure cover 301. The upper end of the mixing cover 207 is fixedly connected with a plurality of dust removal covers 313. The interior of the dust removal covers 313 is slidably connected with a dust removal frame 314. The middle part of the outer wall of the dust removal cover 313 is connected through A multi-way transfer tube 315 is connected, and one end of the multi-way transfer tube 315 away from the dust removal cover 313 passes through the positioning plate 316 and extends to the lower end of the negative pressure cover 301. The lower end of the inner wall of the negative pressure cover 301 is fixedly connected with a plurality of third one-way valve tubes 317, and one end of the third one-way valve tube 317 away from the middle of the negative pressure cover 301 is fixedly connected to the lower end of the multi-way transfer tube 315, and the upper end of the negative pressure cover 301 is fixedly connected with a material guide cover 302, and the outer wall of the transmission rod 208 near the upper end is fixedly connected with three material driving rods 318, and the lower surface of the material driving rod 318 is slidably connected to the upper surface of the material guide cover 302, and the middle part of the upper surface of the assembly plate 303 is fixedly connected with a plurality of guide frames 310, and the connecting frames 306 are respectively slidably connected to the outer walls of the guide frames 310. Dynamic connection, specifically, when the diesel and porous granular ammonium nitrate raw materials are mixed, the transmission rod 208 rotates to drive the reciprocating threaded cylinder 304 to rotate. At this time, the two-way slider 305 will drive the connecting rod 307 and the sealing circular plate 308 to move upward during the upward movement. At this time, the air at the upper end of the negative pressure cover 301 begins to be compressed and flows to the inside of the gas diversion box 311 through the second one-way valve tube 312. At this time, the air inside the gas diversion box 311 will be ejected into the mixing cover 207 through multiple air holes. At this time, the porous granular ammonium nitrate particles will continuously fall from the surface of the material guide cover 302 into the inside of the mixing cover 207. At this time, the porous granular ammonium nitrate will be blown by the gas blown out of the gas diversion box 311 during the falling process.Then, the dust and fine impurities inside the porous granular ammonium nitrate will be blown to the inside of the dust removal rack 314 during the blowing of the gas. At this time, the impurity filter inside the dust removal rack 314 will filter the dust and fine impurities contained in the gas, thereby effectively improving the purity of the porous granular ammonium nitrate raw material. At the same time, during the rising process of the sealing circular plate 308, the air continuously compressed in the upper part of the negative pressure cover 301 cannot flow to the lower end of the negative pressure cover 301 through the first one-way valve pipe 309. At the same time, the lower end of the negative pressure cover 301 begins to inhale air from the inside of the dust removal cover 313 through the third one-way valve pipe 317 and the multi-way transfer pipe 315. The gas can enter the inside of the negative pressure cover 301 through the third one-way valve pipe 317. The continuous inhalation can make the dust and fine impurities generated by the porous granular ammonium nitrate in the process of falling be further adsorbed by the dust removal frame 314, thereby greatly reducing the content of dust and fine impurities in the porous granular ammonium nitrate. When the sealing circular plate 308 is in the process of descending, under the action of the third one-way valve tube 317, the gas inside the negative pressure cover 301 cannot flow out to the outside. At this time, under the action of the first one-way valve tube 309, the gas at the lower end of the sealing circular plate 308 can flow to the upper end of the sealing circular plate 308, thereby balancing the air pressure during the up and down reciprocating movement of the sealing circular plate 308, ensuring the stable operation of the dust removal mechanism 3, and avoiding the situation where the multi-way transfer tube 315 blows air toward the inside of the dust removal cover 313.

[0054] like Fig.10 , Fig.11 , Fig.12 and Fig.131, the oil injection mechanism 4 includes an oil storage barrel 401, a high-pressure oil pump 402, a thick annular tube 403, a thin annular tube 406 and an oil injection seat 409. The oil storage barrel 401 and the high-pressure oil pump 402 are respectively fixedly connected to one side of the upper surface of the bottom plate 101, the high-pressure oil pump 402 is located at the rear end of the oil storage barrel 401, the thick annular tube 403 is fixedly connected to the outer wall of the lower end of the mixing cover 207, the oil outlet of the high-pressure oil pump 402 is fixedly connected to the first oil pipe 404, the upper end of the first oil pipe 404 is connected to the thick annular tube 403, the oil suction port of the high-pressure oil pump 402 is fixedly connected to the second oil pipe 405, the front end of the second oil pipe 405 is connected to the oil storage barrel 401, and the two thin annular tubes 406 are fixedly connected to the inner wall of the lower end of the negative pressure cover 301 , the inner wall of the thick annular tube 403 is fixedly connected with a plurality of third oil pipes 407, and one end of the third oil pipes 407 away from the thick annular tube 403 penetrates the positioning plate 316 and the assembly plate 303 and extends to the inner bottom of the negative pressure cover 301, and the tube body of the thin annular tube 406 is provided with a plurality of shunt pipes 408, and the upper ends of the third oil pipes 407 are connected with the shunt pipes 408, and a plurality of oil injection seats 409 are fixedly connected to the outer wall of the lower end of the negative pressure cover 301, and the outer walls of the oil injection seats 409 are respectively provided with a plurality of first assembly holes 410 and second assembly holes 411, and one end of the first assembly hole 410 near the middle of the negative pressure cover 301 is fixedly connected with a first return spring 413, and the first return spring 413 is away from the middle of the negative pressure cover 301. The ends are fixedly connected with a mixing head 412, and the ends of the mixing head 412 close to the middle of the negative pressure cover 301 are fixedly connected with two reset frames 414, the ends of the inside of the second assembly hole 411 away from the middle of the negative pressure cover 301 are fixedly connected with a second reset spring 416, and the ends of the second reset spring 416 close to the middle of the negative pressure cover 301 are fixedly connected with an oil spray head 415, and the ends of the oil spray heads 415 close to the middle of the negative pressure cover 301 are through-connected with an elastic connecting pipe 417, and the lower ends of the elastic connecting pipes 417 are through-connected with the thin annular tube 406, and the ends of the connecting frames 306 close to the oil spray seat 409 are fixedly connected with an extrusion frame 418, and the ends of the extrusion frames 418 close to the oil spray seat 409 are respectively fixedly connected with a plurality of extrusion frames 419 and three The extrusion round head 420 and the extrusion frame 419 are both slidably connected to the fuel injection seat 409, and the end of the extrusion frame 419 away from the fuel injection seat 409 is slidably connected to the reset frame 414. The extrusion round head 420 is slidably connected to the end of the fuel injection head 415 close to the middle of the negative pressure cover 301, and the end of the elastic connecting tube 417 away from the middle of the negative pressure cover 301 is connected with the fuel injection nozzle 421, and the fuel injection nozzle 421 is located inside the fuel injection head 415. Specifically, when the diesel and porous granular ammonium nitrate raw materials are mixed, the porous granular ammonium nitrate particles will fall into the lower end of the mixing cover 207 during the dust removal process. At this time, during the up and down movement of the two-way slider 305, the extrusion frame 418 will drive the extrusion frame 419 and the extrusion round head 420 to move back and forth up and down.Under the action of the extrusion frame 419 and the first return spring 413, the return frame 414 will make the mixing head 412 continuously reciprocate inside the first assembly hole 410. At this time, the porous granular ammonium nitrate in the falling process will be blocked, thereby reducing the falling speed of the porous granular ammonium nitrate. At the same time, under the action of the extrusion round head 420 and the second return spring 416, the oil injection head 415 will be cyclically inserted into the porous granular ammonium nitrate, and the high-pressure oil pump 402 will be started at the same time. At this time, the inside of the oil storage barrel 401 The diesel will flow into the inside of the thick annular tube 403 through the second oil pipe 405 and the first oil pipe 404, and then flow into the inside of the thin annular tube 406 through the third oil pipe 407 and the diverter pipe 408. At this time, it will be sprayed into the inside of the injection head 415 through the elastic connecting pipe 417 and the injection nozzle 421, and then sprayed into the inside of the porous granular ammonium nitrate by the injection head 415. Since the injection head 415 will constantly change its position inside the porous granular ammonium nitrate, it is ensured that the diesel is evenly sprayed onto the ammonium nitrate particles. The porous granular ammonium nitrate is blown by the wind during the falling process, thereby reducing the content of dust and fine impurities inside the porous granular ammonium nitrate and improving the purity of the porous granular ammonium nitrate. Secondly, the porous granular ammonium nitrate is disturbed during the falling process, reducing the descending speed of the porous granular ammonium nitrate, so that the diesel fuel has enough time to be fully mixed with the porous granular ammonium nitrate, avoiding the situation of uneven mixing of diesel fuel and porous granular ammonium nitrate. Thirdly, the position of the fuel injection head 415 inside the porous granular ammonium nitrate is constantly changed, thereby ensuring that the diesel fuel is evenly sprayed on the inside and surface of the ammonium nitrate particles, rather than concentrated in a certain area, thereby achieving uniform mixing. Fourthly, efficient dust removal of the porous granular nitric acid is achieved, which improves its purity and also improves the mixing quality of the porous granular nitric acid and diesel fuel.

[0055] Specifically, the working principle of the porous granular ammonium nitrate and diesel mixing feeding device is as follows: Specifically, when the diesel and porous granular ammonium nitrate raw materials are mixed, the first rotating rod 103 can drive the fourth sprocket 204 to rotate by starting the servo motor 102. At this time, the second rotating rod 202 starts to rotate under the action of the second chain 205 and the third sprocket 203. At this time, in the process of the first bevel gear 209 and the second bevel gear 210 engaging with each other, the transmission rod 208 starts to rotate, and the rotation of the transmission rod 208 drives the reciprocating threaded cylinder 304 to rotate. At this time, the two-way slider 305 will drive the connecting rod 307 and the sealing circular plate 308 to move upward during the upward movement. At this time, the air at the upper end of the negative pressure cover 301 begins to be compressed and passes through. The air in the gas diverter box 311 will be blown into the mixing hood 207 through the second one-way valve tube 312. At this time, the air in the gas diverter box 311 will be ejected into the mixing hood 207 through multiple air holes. At this time, the porous granular ammonium nitrate particles will continuously fall from the surface of the guide hood 302 into the mixing hood 207. At this time, the porous granular ammonium nitrate will be blown by the gas blown out of the gas diverter box 311 during its falling process. Then, the dust and fine impurities in the porous granular ammonium nitrate will be blown into the dust removal rack 314 during the blowing process of the gas. At this time, the impurity filter net inside the dust removal rack 314 will filter the dust and fine impurities contained in the gas, thereby effectively improving the purity of the porous granular ammonium nitrate raw material. At the same time, during the rising process of the sealing circular plate 308, the negative The continuously compressed air at the upper part of the pressure cover 301 cannot flow to the lower end of the negative pressure cover 301 through the first one-way valve tube 309. At the same time, the lower end of the negative pressure cover 301 begins to inhale air from the inside of the dust removal cover 313 through the third one-way valve tube 317 and the multi-way adapter tube 315. The gas can enter the inside of the negative pressure cover 301 through the third one-way valve tube 317. At this time, the continuous inhalation of air can make the dust and fine impurities generated by the porous granular ammonium nitrate in the process of falling be further adsorbed by the dust removal frame 314, thereby greatly reducing the content of dust and fine impurities in the porous granular ammonium nitrate. When the sealing circular plate 308 descends, under the action of the third one-way valve tube 317, the gas inside the negative pressure cover 301 cannot flow out to the outside. At this time, the gas in the first one-way valve Under the action of the tube 309, the gas at the lower end of the sealing circular plate 308 can flow to the upper end of the sealing circular plate 308, thereby balancing the air pressure during the up and down reciprocating movement of the sealing circular plate 308, ensuring the stable operation of the dust removal mechanism 3, and avoiding the situation where the multi-way adapter tube 315 blows air toward the inside of the dust removal cover 313. At the same time, during the up and down movement of the two-way slider 305, the extrusion frame 418 will drive the extrusion frame 419 and the extrusion round head 420 to reciprocate up and down. Under the action of the extrusion frame 419 and the first return spring 413, the return frame 414 will cause the mixing head 412 to continuously reciprocate inside the first assembly hole 410. At this time, the porous granular ammonium nitrate in the falling process will be blocked, thereby reducing the falling speed of the porous granular ammonium nitrate.At the same time, under the action of the extrusion round head 420 and the second return spring 416, the fuel injection head 415 will be circulated and inserted into the porous granular ammonium nitrate, and the high-pressure oil pump 402 will be started at the same time. At this time, the diesel in the oil storage barrel 401 will flow into the inside of the thick annular tube 403 through the second oil pipe 405 and the first oil pipe 404, and then flow into the inside of the thin annular tube 406 through the third oil pipe 407 and the diverter pipe 408. At this time, it will be sprayed into the inside of the fuel injection head 415 through the elastic connecting pipe 417 and the fuel injection nozzle 421, and then sprayed into the inside of the porous granular ammonium nitrate by the fuel injection head 415. Since the fuel injection head 415 will constantly change its position inside the porous granular ammonium nitrate, it is ensured that the diesel is evenly sprayed on the inside and surface of the ammonium nitrate particles, rather than concentrated in a certain area, so as to achieve uniform mixing.

[0056] It should be noted that the specific models and specifications of the servo motor 102 and the high-pressure oil pump 402 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0057] The power supply and principle of the servo motor 102 and the high-pressure oil pump 402 are clear to those skilled in the art and will not be described in detail here.

[0058] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0059] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A porous granular ammonium nitrate and diesel mixed material feeding device, characterized in that: include: A mixing transmission mechanism (1), the mixing transmission mechanism (1) comprising a bottom plate (101) and a mixing barrel (105), the middle portion of the front end of the upper surface of the bottom plate (101) being fixedly connected to a servo motor (102), the mixing barrel (105) being fixedly connected to the middle portion of the upper surface of the bottom plate (101), the output end of the servo motor (102) being fixedly connected to a first rotating rod (103), the outer wall of the rear end of the first rotating rod (103) being fixedly connected to a first sprocket (104), the interior of the mixing barrel (105) being rotatably connected to an auger stirring rod (106), the front end of the auger stirring rod (106) being fixedly connected to a second sprocket (107), and the outer walls of the first sprocket (104) and the second sprocket (107) being sleeved with a first chain (108); A power transmission mechanism (2), the power transmission mechanism (2) being located at the front end of the mixing transmission mechanism (1), the power transmission mechanism (2) comprising a mounting frame (201) and a mixing cover (207), the lower surface of the mounting frame (201) being fixedly connected to the front end of the upper surface of the bottom plate (101), the upper end of the mounting frame (201) being rotatably connected to a second rotating rod (202), the outer wall of the front end of the second rotating rod (202) being fixedly connected to a third sprocket (203), the outer wall of the middle part of the first rotating rod (103) being fixedly connected to a fourth sprocket (204), the outer walls of the third sprocket (203) and the fourth sprocket (204) being sleeved with a second chain (205), the rear end of the upper part of the mounting frame (201) being rotatably connected to a transmission rod (208), the lower end of the transmission rod (208) extending to the interior of the mixing cover (207); A dust removal mechanism (3), the dust removal mechanism (3) being located at the upper part of the front end of the mixing and conveying mechanism (1), the dust removal mechanism (3) being located at the rear end of the power transmission mechanism (2), the power transmission mechanism (2) driving the dust removal mechanism (3) to move reciprocatingly up and down to form negative pressure, so that dust particles in the raw material are lifted up and filtered, the dust removal mechanism (3) comprising a negative pressure cover (301), a reciprocating threaded cylinder (304), a sealing circular plate (308) and a positioning plate (316), the negative pressure cover (301) being located at the center of the mixing cover (207), the lower end of the inner wall of the negative pressure cover (301) being fixedly connected to an assembly plate (303), a plurality of the positioning plates (316) being fixedly connected to the outer walls of the negative pressure cover (301) and the assembly plate (303), the positioning plates (316) being away from the outer walls of the negative pressure cover (301) and the assembly plate (303), One end of the negative pressure cover (301) is fixedly connected to the inner wall of the mixing cover (207), the lower end of the transmission rod (208) is rotatably connected to the middle part of the upper surface of the assembly plate (303), the reciprocating threaded cylinder (304) is fixedly connected to the outer wall of the lower end of the transmission rod (208), the lower end of the reciprocating threaded cylinder (304) is sleeved with a bidirectional slider (305), the outer wall of the bidirectional slider (305) is fixedly connected to a plurality of connection frames (306), the upper surface of the connection frame (306) is fixedly connected to one end away from the bidirectional slider (305), the upper surface of the connection rod (307) is fixedly connected to the lower surface of the sealing circular plate (308), and the edge of the upper surface of the sealing circular plate (308) is fixedly connected to a plurality of first one-way valve tubes (309); The outer wall of the upper end of the negative pressure cover (301) is fixedly connected to a plurality of gas diversion boxes (311), the middle of the upper end of the gas diversion box (311) is fixedly connected to a second one-way valve tube (312), the upper end of the second one-way valve tube (312) extends to the inner top of the negative pressure cover (301), the upper end of the mixing cover (207) is fixedly connected to a plurality of dust removal covers (313), the interior of the dust removal covers (313) is slidably connected to a dust removal frame (314), the middle of the outer wall of the dust removal cover (313) is penetrated by a multi-way transfer tube (315), and the end of the multi-way transfer tube (315) away from the dust removal cover (313) passes through a positioning plate (316) and extends to the lower end of the negative pressure cover (301); An oil injection mechanism (4), the oil injection mechanism (4) being located at one side of the front end of the mixing and conveying mechanism (1), the oil injection mechanism (4) being located at the lower end of the power transmission mechanism (2), the power transmission mechanism (2) enabling the oil injection mechanism (4) to cyclically inject oil at multiple positions of the raw material, the oil injection mechanism (4) comprising an oil storage barrel (401), a high-pressure oil pump (402), a thick annular tube (403), a thin annular tube (406) and an oil injection seat (409), the oil storage barrel (401) and the high-pressure oil pump (402) being respectively fixedly connected to one side of the upper surface of the bottom plate (101), the high-pressure oil pump (402) being located at the rear end of the oil storage barrel (401), the thick annular tube (403) being fixedly connected to the outer wall of the lower end of the mixing cover (207), the oil outlet of the high-pressure oil pump (402) being fixedly connected to a first oil pipe (404), the first oil pipe (406) and the oil outlet of the high-pressure oil pump (402) being fixedly connected to the oil outlet of the high-pressure oil pump (402), and the first oil pipe (404) and the first oil pipe (406) being fixedly connected to the oil outlet of the high-pressure oil pump (402). The upper end of an oil pipe (404) is connected to the thick annular pipe (403); the oil suction port of the high-pressure oil pump (402) is fixedly connected to a second oil pipe (405); the front end of the second oil pipe (405) is connected to the oil storage barrel (401); the two thin annular pipes (406) are fixedly connected to the inner wall of the lower end of the negative pressure cover (301); the inner wall of the thick annular pipe (403) is fixedly connected to a plurality of third oil pipes (407); the ends of the third oil pipes (407) away from the thick annular pipe (403) penetrate the positioning plate (316) and the assembly plate (303) and extend to the inner bottom of the negative pressure cover (301); the pipe bodies of the thin annular pipes (406) are provided with a plurality of shunt pipes (408); the upper ends of the third oil pipes (407) are connected to the shunt pipes (408); The plurality of oil injection seats (409) are fixedly connected to the outer wall of the lower end of the negative pressure cover (301); the outer wall of the oil injection seat (409) is respectively provided with a plurality of first assembly holes (410) and second assembly holes (411); the first assembly holes (410) are fixedly connected to one end close to the middle of the negative pressure cover (301) with a first return spring (413); the first return spring (413) is fixedly connected to one end away from the middle of the negative pressure cover (301) with a mixing head (412); the mixing head (412) is fixedly connected to one end close to the middle of the negative pressure cover (301) with two return frames (414); the second assembly holes (411) are fixedly connected to one end away from the middle of the negative pressure cover (301) with a first return spring (413); ) is fixedly connected to a second return spring (416) at one end in the middle of the negative pressure cover (301), and the second return spring (416) is fixedly connected to an oil spray head (415) at one end in the middle of the negative pressure cover (301). An elastic connecting tube (417) is through-connected to the oil spray head (415) at one end in the middle of the negative pressure cover (301), and the lower end of the elastic connecting tube (417) is through-connected to the thin annular tube (406). An extrusion frame (418) is fixedly connected to one end in the middle of the connecting frame (306) near the oil spray seat (409), and a plurality of extrusion frames (419) and three extrusion round heads (420) are respectively fixedly connected to one end in the middle of the extrusion frame (418) near the oil spray seat (409).

2. A porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: A material outlet (109) is fixedly connected to the lower portion of the rear end of the mixing barrel (105).

3. A porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: The outer wall of the rear end of the second rotating rod (202) is fixedly connected to a first bevel gear (209), the outer wall of the upper end of the transmission rod (208) is fixedly connected to a second bevel gear (210), and the first bevel gear (209) and the second bevel gear (210) are meshed with each other.

4. A porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: Support plates (206) are fixedly connected to both sides of the front end of the upper surface of the bottom plate (101), and the lower parts of the outer walls on both sides of the mixing cover (207) are fixedly connected to the upper ends of the support plates (206).

5. The porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: A plurality of third one-way valve tubes (317) are fixedly connected to the lower end of the inner wall of the negative pressure cover (301), and one end of the third one-way valve tube (317) away from the middle of the negative pressure cover (301) is fixedly connected to the lower end of the multi-way transfer tube (315).

6. A porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: The upper end of the negative pressure cover (301) is fixedly connected to a material guide cover (302), and the outer wall of the transmission rod (208) close to the upper end is fixedly connected to three material driving rods (318), and the lower surfaces of the material driving rods (318) are slidably connected to the upper surface of the material guide cover (302).

7. The porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: A plurality of guide frames (310) are fixedly connected to the middle of the upper surface of the assembly plate (303), and the connection frames (306) are slidably connected to the outer walls of the guide frames (310), respectively.

8. The porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: The extrusion frames (419) are slidably connected to the oil injection seat (409), one end of the extrusion frames (419) away from the oil injection seat (409) is slidably connected to the reset frame (414), and the extrusion round heads (420) are slidably connected to one end of the oil injection head (415) close to the middle of the negative pressure cover (301).

9. The porous granular ammonium nitrate and diesel mixed material feeding device according to claim 1, characterized in that: One end of the elastic connecting tube (417) away from the middle of the negative pressure cover (301) is connected through a fuel injection nozzle (421), and the fuel injection nozzle (421) is located inside the fuel injection head (415).

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