A pneumatic pressure-driven soil subsoiling and water-fertilizer combined device

Abstract

The present invention belongs to the technical field of deep subsoiling and deep fertilization of soil, and discloses a pneumatically driven device for deep subsoiling and combined use of water and fertilizer, which includes a driving component. A connecting component is installed on the driving component, and a inserting and feeding component is installed on the driving component. The driving component is used to drive the inserting and feeding component to move up and down. The connecting component includes a first air pipe. A first material pipe is arranged below the first air pipe. The outer wall of the first material pipe is fixedly connected with a second material pipe, and the end of the second material pipe is fixedly connected with a liquid guide cylinder. In the present invention, the mobile vehicle sends air to the inserting rod through the compressed air delivery pipe, pushes the second piston to compress the liquid fertilizer, and at the same time the first piston slides down to compress the spring, and the hydraulic rod drives the inserting rod to enter the soil. When the first piston slides to below the diversion hole, the compressed gas and the liquid fertilizer are ejected together. This design reduces the complexity of the operation, shortens the operation time, and further improves the work efficiency.

Description

Technical Field

[0001] The present invention relates to the field of deep loosening of soil and deep application of water and fertilizer, and more specifically, to a pneumatically driven device for combined deep loosening of soil and application of water and fertilizer. Background Art

[0002] In agricultural production, deep loosening of soil is an important measure to improve soil air permeability and water storage capacity and promote the growth of plant roots. Traditional methods of deep loosening of soil often rely on mechanical plowing or rotary tillage. To a certain extent, these methods can improve soil structure, but they have disadvantages such as high energy consumption, serious compaction of the soil below the plow bottom, large damage to soil structure, and low working efficiency.

[0003] In the existing technology, as disclosed in the document with the publication number CN222090088U, a soil aeration device is specifically disclosed. In this device in the document, an electric telescopic rod is used to push the aeration inner tube upward, and the second air holes of the aeration outer tube coincide with the first air holes of the aeration inner tube to start aeration, so as to increase the gaps between soil particles, thereby achieving the purpose of loosening the soil. However, although this method has achieved certain effects in loosening the soil, in actual operation, operators often still need to inject nutrient agents into the soil again after the soil is loosened.

[0004] However, this step-by-step operation method increases the complexity of the operation. Operators need to perform two steps of soil loosening and nutrient supplementation separately. This not only takes time and effort, but also reduces the working efficiency, because it is necessary to wait for the injection of nutrient agents again after each loosening of the soil, which leads to the extension of the entire operation process. Therefore, a pneumatically driven device for combined deep loosening of soil and application of water and fertilizer is designed. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a pneumatically driven device for combined deep loosening of soil and application of water and fertilizer, which can reduce the complexity of the operation and improve the working efficiency; at the same time, according to the root distribution of crops and the demand for water and nutrients, precise positioning and quantitative application of liquid fertilizer are realized.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A pneumatically driven device for combined deep loosening of soil and application of water and fertilizer, including a driving assembly, a connecting assembly is installed on the driving assembly, and a inserting and feeding assembly is installed on the driving assembly. The driving assembly is used to drive the inserting and feeding assembly to move up and down;

[0007] The connecting assembly includes a first air pipe, a first material pipe is arranged below the first air pipe, a second material pipe is fixedly connected to the outer wall of the first material pipe, and a liquid guide cylinder is fixedly connected to the end of the second material pipe;

[0008] The insertion assembly includes two conveying sleeves which penetrate through the mounting holes and are slidably connected thereto. The inner walls of the conveying sleeves are each slidably connected with an insertion rod. Two sliding holes are formed in the outer walls of the insertion rods. First branch pipes are fixedly connected to the outer walls of the insertion rods. The ends of the first branch pipes penetrate through the other sliding holes and are slidably connected thereto. Second one-way valves are fixedly connected to the outer walls of the first branch pipes. The ends of the first branch pipes are fixedly connected to the first air pipes.

[0009] Preferably, the driving assembly includes a mounting frame. Two mounting holes are formed in the top of the mounting frame. Extension holes are formed in the inner walls of the two mounting holes. An activity hole is formed in the top of the mounting frame.

[0010] Preferably, a mounting plate is fixedly connected to the outer wall of the mounting frame. A hydraulic rod is fixedly connected to the inner wall of the mounting plate. A connecting frame is fixedly connected to the output end of the hydraulic rod. The connecting frame is slidably connected with the activity hole.

[0011] Preferably, first connecting plates are fixedly connected to both ends of the bottom of the connecting frame. Second connecting plates are fixedly connected to the outer walls of the two first connecting plates. The ends of the two second connecting plates penetrate through the mounting holes and are slidably connected thereto. Connecting shafts are fixedly connected to the outer walls of the two second connecting plates.

[0012] Preferably, a second air pipe is fixedly connected to the outer wall of the first air pipe. A first one-way valve is fixedly connected to the circumferential outer wall of the second material pipe. A third material pipe is fixedly connected to the end of the liquid guide cylinder.

[0013] Preferably, the end of the connecting shaft penetrates through one of the sliding holes and is slidably connected thereto. The connecting shaft is fixedly connected to the insertion rod.

[0014] Preferably, sealing sleeves are fixedly connected to the circumferential outer walls of the conveying sleeves. Second branch pipes are fixedly connected to the circumferential outer walls of the insertion rods. The ends of the second branch pipes penetrate through the sliding holes and are slidably connected thereto. The ends of the second branch pipes are fixedly connected to the first material pipes.

[0015] Preferably, insertion mouths are fixedly connected to the bottoms of the insertion rods. A plurality of injection holes are formed in the outer walls of the insertion mouths.

[0016] Preferably, second springs are fixedly connected to the tops of the inner walls of the insertion rods. A plurality of first fixing beads are fixedly connected to the circumferential outer walls of the second springs. A first steel wire rope is fixedly connected between adjacent two of the first fixing beads. Second pistons are slidably connected to the inner walls of the insertion rods. The second pistons are located below the first branch pipes. A plurality of first sealing rings are fixedly connected to the circumferential outer walls of the second pistons. The first sealing rings are slidably connected with the inner walls of the insertion rods. The bottoms of the second springs are fixedly connected to the tops of the second pistons. Limit rings are fixedly connected to the inner walls of the insertion rods. The limit rings are located above the second pistons.

[0017] Preferably, first pistons are slidably connected to the inner walls of the insertion rods. A plurality of second sealing rings are fixedly connected to the circumferential outer walls of the first pistons. The second sealing rings are slidably connected to the inner walls of the insertion rods. A third spring is fixedly connected to the bottom of the first piston. Trays are fixedly connected to the inner walls of the insertion rods. The bottom of the third spring is fixedly connected to the trays. A plurality of second fixing beads are fixedly connected to the circumferential outer wall of the third spring. Second steel wires are fixedly connected between adjacent second fixing beads. A plurality of diversion holes are formed in the inner walls of the insertion rods. The second branch pipe is located between the first piston and the second piston.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. After the quantitative liquid fertilizer passes through the third material pipe, it sequentially passes through the second material pipe, the first one-way valve and the first material pipe, and is stored between the two pistons in the insertion rod. The mobile vehicle sends air to the insertion rod through the compressed air pipe, pushes the second piston to compress the liquid fertilizer. At the same time, the first piston slides down to compress the spring. The hydraulic rod drives the insertion rod into the soil. The first piston slides to below the diversion hole, and the compressed gas and the liquid fertilizer are ejected together, realizing deep loosening of the soil and quantitative application of the liquid fertilizer; this design reduces the complexity of the operation, shortens the operation time, and further improves the work efficiency.

[0020] 2. The piston is pushed by compressed air to compress the liquid fertilizer, ensuring the control of the pressure and flow rate of the liquid fertilizer during injection. According to the root distribution and water and nutrient requirements of the crops, precise quantification during the fertilization process is realized. When the piston slides to a specific position, the liquid fertilizer and the compressed air can be ejected simultaneously, improving the efficiency and effect of fertilization.

[0021] 3. The hydraulic rod pushes the connecting frame and the insertion rod to move downward, realizing the control of the soil depth and the positioning application of the liquid fertilizer; the sealing sleeve at the bottom of the insertion rod contacts the ground, ensuring the accuracy and sealing of the fertilizer injection; the design of the injection holes enables the fertilizer to be evenly distributed inside the soil, improving the utilization rate of the fertilizer.

[0022] 4. The transportation, pressurization and application processes of the liquid fertilizer are all automated, reducing the complexity and labor intensity of manual operation. At the same time, through the design of mechanical structures such as air pressure and springs, the control of the application amount of the liquid fertilizer is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the overall structure of the driving component of the present invention;

[0026] Figure 3 Schematic diagram of the overall structure of the connecting component of the present invention;

[0027] Figure 4 Schematic diagram of the internal structure of the liquid guide cylinder of the present invention;

[0028] Figure 5 Schematic diagram of the installation structure of the bump of the present invention;

[0029] Figure 6 Schematic diagram of the installation structure of the slider of the present invention;

[0030] Figure 7 Schematic diagram of the overall structure of the inserting and feeding component of the present invention;

[0031] Figure 8 Schematic diagram of the installation structure of the nozzle of the present invention;

[0032] Figure 9 Schematic diagram of the internal structure of the inserting rod of the present invention;

[0033] Figure 10 Schematic diagram of the installation structure of the second piston of the present invention;

[0034] Figure 11 Schematic diagram of the installation structure of the first piston of the present invention;

[0035] Figure 12 Schematic diagram of the installation structure of the tray of the present invention.

[0036] Description of reference numerals in the figure: 1. Driving component; 101. Mounting frame; 102. Mounting hole; 103. Extension hole; 104. Movable hole; 105. Mounting plate; 106. Hydraulic rod; 107. Connecting frame; 108. First connecting plate; 109. Second connecting plate; 110. Connecting shaft; 2. Connecting component; 201. First air pipe; 202. Second air pipe; 203. First material pipe; 204. Second material pipe; 205. First one-way valve; 206. Liquid guide cylinder; 207. Third material pipe; 208. Support filter disc; 209. Brush hair; 210. Filter disc; 211. Arc hole; 212. Cam rod; 213. Spiral groove; 214. Protrusion; 215. Mounting groove; 216. Slide bar; 217. First spring; 218. Slide block; 3. Inserting and feeding component; 301. Conveyor sleeve; 302. Inserting rod; 303. Slide hole; 304. First branch pipe; 305. Second one-way valve; 306. Sealing sleeve; 307. Second branch pipe; 308. First piston; 309. Second piston; 310. Insertion nozzle; 311. Limit ring; 312. Second spring; 313. First fixing bead; 314. First steel wire rope; 315. First sealing ring; 316. Second sealing ring; 317. Third spring; 318. Second fixing bead; 319. Second steel wire rope; 320. Diversion hole; 321. Tray; 322. Injection hole. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application. The following will make a detailed description of the specific implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0038] In the prior art, subsoiling and liquid fertilizer application are generally carried out in separate steps. This method increases the complexity of the operation. The operator needs to perform two steps of soil subsoiling and liquid fertilizer supplementation separately, which not only consumes time and effort, but also reduces the work efficiency. Because after each soil loosening, it is necessary to wait for the liquid fertilizer to be injected again, which prolongs the entire operation time and reduces the work efficiency.

[0039] To solve the above problems, the present application provides a pneumatically driven soil subsoiling and water-fertilizer combined device, which can use air pressure to perform soil subsoiling and inject liquid fertilizer into the soil while loosening the soil, thereby simplifying the operation process and improving the operation efficiency. At the same time, the device should also have the characteristics of easy operation, convenient maintenance and strong adaptability to meet the needs of different soil types and crop growth.

[0040] The following is a detailed description. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, each embodiment has its own emphasis. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0041] Embodiment 1: As Figure 1 and Figure 2 shown, a pneumatic-driven soil subsoiling and water-fertilizer combined device includes a driving component 1, and the driving component 1 is used to drive the inserting component 3 to move up and down.

[0042] The driving component 1 includes a mounting frame 101. Two mounting holes 102 are opened at the top of the mounting frame 101. Extension holes 103 are opened on the inner walls of the two mounting holes 102, and a moving hole 104 is opened at the top of the mounting frame 101.

[0043] The outer wall of the mounting frame 101 is fixedly connected with a mounting plate 105. The inner wall of the mounting plate 105 is fixedly connected with a hydraulic rod 106. The output end of the hydraulic rod 106 is fixedly connected with a connecting frame 107, and the connecting frame 107 is slidably connected with the moving hole 104.

[0044] Both ends of the bottom of the connecting frame 107 are fixedly connected with first connecting plates 108. The outer walls of the two first connecting plates 108 are fixedly connected with second connecting plates 109. The ends of the two second connecting plates 109 penetrate through the mounting holes 102 and are slidably connected with them. The outer walls of the two second connecting plates 109 are fixedly connected with connecting shafts 110.

[0045] The hydraulic rod 106 is the main driving force source, and the required thrust is provided by the telescopic movement of its piston rod; the hydraulic rod 106 pushes the connecting frame 107 to move downward. The connecting frame 107 then drives the second connecting plate 109 to move through the first connecting plate 108. The second connecting plate 109 drives the inserting rod 302 to move downward through the connecting shaft 110. When the inserting rod 302 moves, it drives the first branch pipe 304 and the second branch pipe 307 to move downward along the extension hole 103 respectively. When the sealing sleeve 306 at the bottom of the conveying sleeve 301 contacts the ground, the connecting shaft 110 drives the inserting rod 302 to insert into the soil.

[0046] Embodiment 2: This embodiment provides a pneumatic-driven soil subsoiling and water-fertilizer combined device, which further includes the following structure on the basis of Embodiment 1:

[0047] As Figure 1 and Figures 3 - 6 shown, a connecting component 2 is installed on the driving component 1. The outer wall of the first air pipe 201 is fixedly connected with a second air pipe 202. The outer circumferential wall of the second material pipe 204 is fixedly connected with a first one-way valve 205. The end of the liquid guide cylinder 206 is fixedly connected with a third material pipe 207.

[0048] The connecting component 2 includes a first air pipe 201. A first material pipe 203 is arranged below the first air pipe 201. The outer wall of the first material pipe 203 is fixedly connected with a second material pipe 204. The end of the second material pipe 204 is fixedly connected with a liquid guide cylinder 206. The liquid guide cylinder 206 is composed of a cylinder body and a detachable cylinder cover. The cylinder cover is connected with a third material pipe 207.

[0049] A quantitative amount of liquid fertilizer is sent to the third material pipe 207, flows into the second material pipe 204 through the liquid guide cylinder 206, and then enters the first material pipe 203 through the regulation of the first one-way valve 205. Subsequently, the liquid fertilizer is transported to the inside of the insertion rod 302 through the first material pipe 203 and the second branch pipe 307, and is stored in the space between the first piston 308 and the second piston 309.

[0050] Embodiment 3: This embodiment provides a pneumatically driven soil subsoiling and water-fertilizer combined device, which further includes the following structure on the basis of Embodiment 2:

[0051] As Figure 1 and Figures 7 - 12 shown, an insertion component 3 is installed on the driving component 1. The insertion component 3 includes two conveying sleeves 301. The conveying sleeves 301 penetrate through the mounting holes 102 and are slidably connected therewith. Insertion rods 302 are slidably connected to the inner walls of the conveying sleeves 301. Two sliding holes 303 are formed in the outer walls of the insertion rods 302. The end of the connecting shaft 110 penetrates through one of the sliding holes 303 and is slidably connected therewith. The connecting shaft 110 is fixedly connected with the insertion rod 302. First branch pipes 304 are fixedly connected to the outer walls of the insertion rods 302. The ends of the first branch pipes 304 penetrate through the other sliding hole 303 and are slidably connected therewith. Second one-way valves 305 are fixedly connected to the outer walls of the first branch pipes 304. The ends of the first branch pipes 304 are fixedly connected with the first air pipe 201.

[0052] Sealing sleeves 306 are fixedly connected to the circumferential outer walls of the conveying sleeves 301. Second branch pipes 307 are fixedly connected to the circumferential outer walls of the insertion rods 302. The ends of the second branch pipes 307 penetrate through the sliding holes 303 and are slidably connected therewith. The ends of the second branch pipes 307 are fixedly connected with the first material pipe 203.

[0053] Insertion tips 310 are fixedly connected to the bottoms of the insertion rods 302. A plurality of injection holes 322 are formed in the outer walls of the insertion tips 310.

[0054] At the top inner wall of the insertion rod 302, second springs 312 are fixedly connected. On the circumferential outer wall of each second spring 312, a plurality of first fixing beads 313 are fixedly connected. Between adjacent two first fixing beads 313, a first steel wire rope 314 is fixedly connected. Inside the insertion rod 302, second pistons 309 are slidably connected. The second pistons 309 are located below the first branch pipes 304. On the circumferential outer wall of each second piston 309, a plurality of first sealing rings 315 are fixedly connected. The first sealing rings 315 are slidably connected with the inner wall of the insertion rod 302. The bottom of the second spring 312 is fixedly connected to the top of the second piston 309. On the inner wall of the insertion rod 302, limiting rings 311 are fixedly connected. The limiting rings 311 are located above the second pistons 309.

[0055] Inside the insertion rod 302, first pistons 308 are slidably connected. On the circumferential outer wall of each first piston 308, a plurality of second sealing rings 316 are fixedly connected. The second sealing rings 316 are slidably connected with the inner wall of the insertion rod 302. The bottom of the first piston 308 is fixedly connected to a third spring 317. On the inner wall of the insertion rod 302, trays 321 are fixedly connected. The bottom of the third spring 317 is fixedly connected to the tray 321. On the circumferential outer wall of the third spring 317, a plurality of second fixing beads 318 are fixedly connected. Between adjacent two second fixing beads 318, second steel wire ropes 319 are fixedly connected. On the inner wall of the insertion rod 302, a plurality of diversion holes 320 are opened. The second branch pipe 307 is located between the first piston 308 and the second piston 309.

[0056] When the first piston 308 reaches below the diversion holes 320, the compressed air and liquid fertilizer in the insertion rod 302 are sprayed out through the diversion holes 320 and the injection holes 322, impacting the soil and making it loose. At the same time, the liquid fertilizer diffuses in the soil. After the injection is completed, the hydraulic rod 106 drives the insertion rod 302 to be withdrawn. The first piston 308 slides upward to the positioning under the elastic force of the third spring 317, and the second piston 309 slides upward to the limit under the pulling force of the second spring 312.

[0057] In addition, this embodiment provides a pneumatic-driven soil subsoiling and water-fertilizer combined device, which further includes the following structure on the basis of Embodiment 3:

[0058] On the inner wall of the liquid guide cylinder 206, a support filter disc 208 is fixedly connected. On the outer wall of the support filter disc 208, a plurality of brush hairs 209 are fixedly connected. On the outer wall of the support filter disc 208, a cam rod 212 is fixedly connected. On the circumferential outer wall of the cam rod 212, a spiral groove 213 is opened. Inside the spiral groove 213, a convex block 214 is slidably connected. On the circumferential outer wall of the cam rod 212, a filter disc 210 is slidably connected. The inner wall of the filter disc 210 is fixedly connected to the convex block 214. On the outer wall of the filter disc 210, a plurality of arc holes 211 are opened.

[0059] An installation groove 215 is provided on the outer wall of the cam rod 212, and a slide rod 216 is fixedly connected to the inner wall of the installation groove 215. A first spring 217 is sleeved on the circumferential outer wall of the slide rod 216. A slider 218 is slidably connected to the circumferential outer wall of the slide rod 216. The end of the slider 218 extends to the outside of the cam rod 212, one end of the first spring 217 is fixedly connected to the inner wall of the cam rod 212, and the other end of the first spring 217 is fixedly connected to the slider 218.

[0060] The particles in the liquid fertilizer are filtered through the arc holes 211 on the filter disc 210, thereby ensuring the purity of the fertilizer. When the arc holes 211 are blocked, the filter disc 210 can automatically rotate under the action of water pressure and cooperate with the bristles 209 for cleaning, thereby avoiding the blockage problem caused by the accumulation of particles. During the cleaning process, the rotation of the filter disc 210 and the design of the arc holes 211 make it easier for the bristles 209 to be inserted into the arc holes 211, thereby improving the cleaning efficiency. When the filter disc 210 moves, the spring can be compressed and reset under the action of the spring elastic force, thereby facilitating the cleaning of particles in the liquid guide cylinder 206.

[0061] When the arc hole 211 on the filter disc 210 is clogged, under the action of water pressure, the filter disc 210 drives the protrusion 214 to slide along the inner wall of the spiral groove 213 on the cam rod 212, so that the filter disc 210 rotates during the movement. The rotating filter disc 210 and the bristles 209 produce friction, so that the bristles 209 can be smoothly inserted into the arc hole 211 to clean the particles inside the arc hole 211. At the same time, the rotating filter disc 210 can make the bristles 209 move in the arc hole 211. This dynamic process ensures that there will be no continuous blockage points in the arc hole 211, and avoids the situation where the bristles 209 are blocked in the arc hole 211 due to replacing particles, resulting in the inability of the liquid to pass through the filter disc 210 smoothly.

[0062] When the filter disc 210 moves, it can push the slider 218 to slide along the slide rod 216 and compress the first spring 217. After a single injection of liquid fertilizer, at this time, under the elastic force of the first spring 217, the slider 218 pushes the filter disc 210 in the opposite direction along the slide rod 216 to move, so that the filter disc 210 is out of contact with the bristles 209. By removing the cylinder cover, the particulate matter in the liquid guide cylinder 206 can be cleaned.

[0063] This device is not only suitable for the application of liquid fertilizer, but also can realize the combined use of irrigation water and biogas slurry.

[0064] Working principle: First, install the mounting frame 101 on the mobile vehicle, then connect the end of the second air pipe 202 to the pressurized air pipe equipped on the mobile vehicle to ensure smooth air pressure transmission; at the same time, connect the end of the third material pipe 207 to the liquid infusion pipe storing liquid fertilizer on the mobile vehicle to ensure the supply of liquid fertilizer;

[0065] Subsequently, start the conveying process of the liquid fertilizer. The liquid fertilizer is quantitatively conveyed into the third material pipe 207, smoothly enters the liquid guide cylinder 206, then enters the second material pipe 204, and flows into the first material pipe 203 under the regulation of the first one-way valve 205. Immediately afterwards, the liquid fertilizer is conveyed to the inside of the inserting rod 302 through the first material pipe 203 and the second branch pipe 307, and is stored in the space between the first piston 308 and the second piston 309;

[0066] Compress the air and convey it through the second air pipe 202 into the first air pipe 201. Through the first air pipe 201, convey the compressed air into the inside of the inserting rod 302 through the first branch pipe 304. At this time, under the push of the compressed air, the second piston 309 slides downward along the inner wall of the inserting rod 302, causing the second spring 312 to be stretched. When the second piston 309 slides, it compresses the liquid fertilizer until the first steel wire rope 314 is fully stretched. The first piston 308 slides downward along the inserting rod 302 and compresses the third spring 317. Under the elastic force of the third spring 317, the air inside the inserting rod 302 is fully compressed;

[0067] Push the connecting frame 107 downward through the hydraulic rod 106, drive the second connecting plate 109 to move through the first connecting plate 108. The second connecting plate 109 drives the inserting rod 302 to move downward through the connecting shaft 110. When the inserting rod 302 moves, it drives the first branch pipe 304 and the second branch pipe 307 to move downward along the extension hole 103 respectively. When the sealing sleeve 306 at the bottom of the conveying sleeve 301 contacts the ground, the connecting shaft 110 drives the inserting rod 302 to insert into the soil;

[0068] When the first piston 308 slides to below the diversion hole 320, at this time, the compressed air and the compressed liquid fertilizer inside the inserting rod 302 are sprayed out through the diversion hole 320 and the injection holes 322 on the injection nozzle 310. The compressed air impacts the soil, making the soil looser. At the same time, driven by the compressed air, the liquid fertilizer diffuses inside the soil;

[0069] After injection, the hydraulic rod 106 drives the inserting rod 302 to be withdrawn from the soil. At this time, under the elastic force of the compressed third spring 317, the first piston 308 slides upward along the inserting rod 302 until the second steel wire rope 319 is fully straightened, so as to be able to position the first piston 308. At the same time, under the pulling force of the second spring 312, the second piston 309 slides upward along the inserting rod 302 until it contacts the limit ring 311, and can limit the position of the second piston 309.

[0070] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A pneumatic-driven soil subsoiling and water-fertilizer combined device, comprising a driving assembly, characterized in that: A connection component is installed on the driving component, and a feeding component is installed on the driving component. The driving component is used to drive the feeding component to move up and down. The connection component includes a first air pipe. A first material pipe is arranged below the first air pipe. The outer wall of the first material pipe is fixedly connected with a second material pipe, and the end of the second material pipe is fixedly connected with a liquid guide cylinder. A support filter disc is fixedly connected to the inner wall of the liquid guide cylinder. A plurality of bristles are fixedly connected to the outer wall of the support filter disc. A cam rod is fixedly connected to the outer wall of the support filter disc. A spiral groove is formed in the circumferential outer wall of the cam rod. A convex block is slidably connected to the inner wall of the spiral groove. A filter disc is slidably connected to the circumferential outer wall of the cam rod. The inner wall of the filter disc is fixedly connected with the convex block. A plurality of arc holes are formed in the outer wall of the filter disc. An installation groove is formed in the outer wall of the cam rod. A sliding rod is fixedly connected to the inner wall of the installation groove. A first spring is sleeved on the circumferential outer wall of the sliding rod. A slider is slidably connected to the circumferential outer wall of the sliding rod. The end of the slider extends to the outside of the cam rod. One end of the first spring is fixedly connected to the inner wall of the cam rod, and the other end of the first spring is fixedly connected to the slider. The feeding component includes two conveying sleeves. The conveying sleeves penetrate through the installation holes and are slidably connected therewith. Plug rods are slidably connected to the inner walls of the conveying sleeves respectively. Two sliding holes are formed in the outer walls of the plug rods respectively. First branch pipes are fixedly connected to the outer walls of the plug rods respectively. The ends of the first branch pipes penetrate through the other sliding holes respectively and are slidably connected therewith. Second one-way valves are fixedly connected to the outer walls of the first branch pipes respectively. The ends of the first branch pipes are fixedly connected with the first air pipe. Nozzles are fixedly connected to the bottoms of the plug rods respectively. A plurality of injection holes are formed in the outer walls of the nozzles. Second springs are fixedly connected to the tops of the inner walls of the plug rods respectively. Second pistons are slidably connected to the inner walls of the plug rods respectively. The second pistons are located below the first branch pipes. The bottoms of the second springs are fixedly connected to the tops of the second pistons. Limit rings are fixedly connected to the inner walls of the plug rods respectively. The limit rings are located above the second pistons. First pistons are slidably connected to the inner walls of the plug rods respectively. Third springs are fixedly connected to the bottoms of the first pistons. Trays are fixedly connected to the inner walls of the plug rods respectively. The bottoms of the third springs are fixedly connected to the trays. A plurality of diversion holes are formed in the inner walls of the plug rods respectively. Second branch pipes are fixedly connected to the circumferential outer walls of the plug rods respectively. The second branch pipes are located between the first pistons and the second pistons.

2. The pneumatic-driven soil subsoiling and water-fertilizer combined device according to claim 1, wherein: The driving component includes an installation frame. Two installation holes are formed in the top of the installation frame. Extension holes are formed in the inner walls of the two installation holes respectively. An activity hole is formed in the top of the installation frame.

3. The pneumatic-driven soil subsoiling and water-fertilizer combined device according to claim 2, wherein: An installation plate is fixedly connected to the outer wall of the installation frame. A hydraulic rod is fixedly connected to the inner wall of the installation plate. The output end of the hydraulic rod is fixedly connected with a connection frame. The connection frame is slidably connected with the activity hole.

4. The pneumatic-driven soil subsoiling and water-fertilizer combined device according to claim 3, wherein: First connecting plates are fixedly connected to both ends of the bottom of the connection frame respectively. Second connecting plates are fixedly connected to the outer walls of the two first connecting plates respectively. The ends of the two second connecting plates penetrate through the installation holes respectively and are slidably connected therewith. Connection shafts are fixedly connected to the outer walls of the two second connecting plates respectively.

5. The pneumatic drive soil subsoiling and water-fertilizer combined device according to claim 4, characterized in that: A second air pipe is fixedly connected to the outer wall of the first air pipe. A first one-way valve is fixedly connected to the circumferential outer wall of the second material pipe. A third material pipe is fixedly connected to the end of the liquid guide cylinder.

6. The pneumatic-driven soil subsoiling and water-fertilizer combined device according to claim 5, characterized in that: The end of the connecting shaft penetrates through one of the sliding holes and is slidably connected thereto, and the connecting shaft is fixedly connected to the inserting rod.

7. The pneumatic drive soil subsoiling and water-fertilizer combined device according to claim 6, characterized in that: Sealing sleeves are fixedly connected to the circumferential outer walls of the conveying sleeves. The end of the second branch pipe penetrates through the sliding hole and is slidably connected thereto, and the end of the second branch pipe is fixedly connected to the first material pipe.

8. The pneumatic-driven soil subsoiling and water-fertilizer combined device according to claim 7, characterized in that: A plurality of first fixing beads are fixedly connected to the circumferential outer wall of the second spring, and a first steel wire rope is fixedly connected between two adjacent first fixing beads. A plurality of first sealing rings are fixedly connected to the circumferential outer wall of the second piston, and the first sealing rings are slidably connected to the inner wall of the inserting rod.

9. The pneumatic-driven soil subsoiling and water-fertilizer combined device according to claim 8, wherein: A plurality of second sealing rings are fixedly connected to the circumferential outer wall of the first piston, and the second sealing rings are slidably connected to the inner wall of the inserting rod. A plurality of second fixing beads are fixedly connected to the circumferential outer wall of the third spring, and a second steel wire rope is fixedly connected between two adjacent second fixing beads.

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