Soil high-pressure gas injection machine for saline-alkali soil improvement

Abstract

The utility model discloses a high-pressure soil gas injection machine for saline-alkali soil improvement, and relates to the technical field of soil improvement. The gas injection machine comprises a gas injection machine body and two limiting supports, the two limiting supports are fixedly installed on one side of the gas injection machine body, fixing rods are fixedly installed on the opposite sides of the two limiting supports, a hydraulic cylinder is fixedly installed between the two fixing rods, and a pressing plate is fixedly installed at the output end of the hydraulic cylinder. A gas injection pipe is fixedly installed at the bottom of the pressing plate, a fixed base is fixedly installed on one side of the gas injection machine body, a motor is fixedly installed on one side of the fixed base, the output end of the motor is sleeved with a belt, and two installation supports are fixedly installed on one side of the gas injection machine body. The cleaning assembly for cleaning the outer side of the gas injection pipe is arranged between the two mounting supports, the belt is used in cooperation with the cleaning assembly, efficient, automatic and safe cleaning of the outer wall of the gas injection pipe is achieved through the cleaning assembly, the service life of the gas injection pipe is prolonged, and the frequency and cost of replacing parts of equipment are reduced.

Description

Technical Field

[0001] This utility model relates to the field of soil improvement technology, specifically to a high-pressure soil aeration machine for improving saline-alkali land. Background Technology

[0002] In the field of saline-alkali land improvement, poor soil aeration and excessive salt content are key factors restricting plant growth. Traditional saline-alkali land improvement methods have problems such as low efficiency and poor results, which are difficult to meet the needs of modern agriculture for rapid improvement of soil quality. With the development of technology, high-pressure gas injection technology has been gradually applied to saline-alkali land improvement. By injecting high-pressure gas into the soil, soil aeration can be improved, salt dissolution and migration can be promoted, thereby effectively reducing soil salinity and creating favorable conditions for plant growth.

[0003] When using an aeration machine in soft saline-alkali soil, a large amount of saline-alkali soil easily adheres to the outer wall of the aeration pipe. If it is not cleaned in time, it will lead to corrosion and blockage of the aeration pipe, shorten its service life, increase equipment maintenance costs and the frequency of replacement of parts, seriously affect the continuous and efficient operation of the aeration machine, and thus hinder the smooth progress of saline-alkali soil improvement work. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a high-pressure soil aerator for saline-alkali land improvement, which is capable of efficiently cleaning the saline-alkali soil adhering to the outer wall of the aerator pipe. This solves the problem that when the aerator operates on soft saline-alkali land, the outer wall of the aerator pipe is easily covered with saline-alkali soil, leading to corrosion and blockage, which affects equipment operation and the progress of saline-alkali land improvement work.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-pressure soil aerator for saline-alkali land improvement, comprising an aerator body and two limiting brackets. The two limiting brackets are fixedly installed on one side of the aerator body. A fixing rod is fixedly installed on the opposite side of the two limiting brackets. A hydraulic cylinder is fixedly installed between the two fixing rods. A pressing plate is fixedly installed at the output end of the hydraulic cylinder. An aerator pipe is fixedly installed at the bottom of the pressing plate. A fixing base is fixedly installed on one side of the aerator body. A motor is fixedly installed on one side of the fixing base. A belt is fitted onto the output end of the motor. Two mounting brackets are fixedly installed on one side of the aerator body. A cleaning component for cleaning the outside of the aerator pipe is provided between the two mounting brackets. The belt works in conjunction with the cleaning component. A spraying component capable of simultaneously spraying gas in different directions is provided on the outside of the aerator pipe.

[0006] As a preferred technical solution of this utility model, the cleaning component includes an installation cylinder, a cleaning cylinder is rotatably installed inside the installation cylinder, a plurality of nylon bristles are fixedly installed inside the cleaning cylinder, an annular limiting groove is provided on the inner side of the installation cylinder, a limiting ring is fixedly installed on the outer side of the cleaning cylinder, the annular limiting groove and the limiting ring are used in conjunction, a transmission groove is provided on the outer side of the cleaning cylinder, and the outer side of the transmission groove is sleeved with the inner side of the belt.

[0007] As a preferred technical solution of this utility model, the injection assembly includes a plurality of movable holes, which are symmetrically opened on the outside of the air injection pipe. A sleeve is movably installed inside the movable hole, and a sealing ring is fixedly installed on the outside of the sleeve. The sealing ring is located inside the air injection pipe. Two rectangular limiting grooves are opened on the inner side of the sleeve, and a spring is fixedly installed between the two sleeves.

[0008] As a preferred technical solution of this utility model, the spraying assembly further includes several air outlet pipes, which are movably installed inside the sleeve. Two air outlet pipes form a group. Four air outlet holes are symmetrically opened on the inner side of the air outlet pipes. Rectangular limiting blocks are symmetrically fixedly installed on the outer side of the air outlet pipes. The rectangular limiting blocks are used in conjunction with rectangular limiting grooves. A conical sealing block is fixedly installed at one end of the air outlet pipe.

[0009] As a preferred technical solution of this utility model, a limiting hole is provided on one side of each of the two limiting brackets, and a limiting slider is fixedly installed on both sides of the pressing plate. The limiting hole and the limiting slider are used in conjunction.

[0010] As a preferred embodiment of this utility model, the air injection pipe is fixedly installed with a spiral hose on its outer side, and the other end of the spiral hose is fixedly installed with the air outlet of the air injection machine body.

[0011] The beneficial effects of this utility model are as follows:

[0012] This invention utilizes a cleaning component. After the air injection operation is completed, the motor is started, and the belt drives the cleaning cylinder to rotate stably inside the mounting cylinder. When the air injection pipe is pulled out of the soft soil, the nylon bristles inside the cleaning cylinder fully contact its outer wall. The annular limiting groove of the mounting cylinder cooperates with the limiting ring of the cleaning cylinder to ensure the stable rotation of the cleaning cylinder. The nylon bristles efficiently remove saline-alkali soil from the outer wall of the air injection pipe, avoiding corrosion and wear caused by long-term adhesion, extending the life of the air injection pipe, reducing maintenance costs, and ensuring efficient operation of the equipment.

[0013] During the air injection operation, the hydraulic cylinder pushes the pressing plate to insert the air injection pipe into the soil. The limiting hole of the limiting bracket cooperates with the limiting slider of the pressing plate to ensure that the air injection pipe is inserted vertically and stably. The high-pressure gas generated by the air injector enters the air injection pipe through the spiral hose. Due to the conical sealing block at one end of the air outlet pipe, the gas pressure gradually accumulates and pushes out the air outlet pipe. The rectangular limiting block on the outside of the air outlet pipe matches the rectangular limiting groove on the inside of the sleeve to ensure the stability of the air outlet pipe when it is pushed out, and at the same time prevent the air outlet pipe from detaching from the sleeve. The four air outlet holes on the inside of the air outlet pipe allow the gas to be sprayed at multiple angles, expanding the range of action and improving the improvement effect. The spring between the sleeves reduces resistance when the air injection pipe is inserted and fixes the air injection pipe after insertion, making the spray more stable. The tip of the conical sealing block makes it easy for the air outlet pipe to be inserted into the soft soil. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a high-pressure soil aeration machine for improving saline-alkali land according to this utility model.

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of a high-pressure soil aerator for improving saline-alkali land according to this utility model;

[0016] Figure 3 This is an enlarged structural schematic diagram of utility model A;

[0017] Figure 4 This is an enlarged structural schematic diagram of utility model B.

[0018] Reference numerals in the attached diagram: 1. Limiting bracket; 2. Fixing rod; 3. Hydraulic cylinder; 4. Pressing plate; 5. Air injection pipe; 6. Fixed base; 7. Motor; 8. Mounting bracket; 9. Mounting cylinder; 10. Cleaning cylinder; 11. Nylon bristles; 12. Annular limiting groove; 13. Limiting ring; 14. Transmission groove; 15. Belt; 16. Sleeve; 17. Sealing ring; 18. Rectangular limiting groove; 19. Air outlet pipe; 20. Air outlet hole; 21. Rectangular limiting block; 22. Spring. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0020] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figure 1 -Appendix Figure 4 The present invention will be further described below.

[0021] A high-pressure soil aerator for improving saline-alkali land includes an aerator body and two limiting brackets 1. The two limiting brackets 1 are fixedly installed on one side of the aerator body. A fixing rod 2 is fixedly installed on the opposite side of the two limiting brackets 1. A hydraulic cylinder 3 is fixedly installed between the two fixing rods 2. A pressing plate 4 is fixedly installed at the output end of the hydraulic cylinder 3. An aerator pipe 5 is fixedly installed at the bottom of the pressing plate 4. A fixing base 6 is fixedly installed on one side of the aerator body. A motor 7 is fixedly installed on one side of the fixing base 6. A belt 15 is sleeved on the output end of the motor 7. Two mounting brackets 8 are fixedly installed on one side of the aerator body. A cleaning component for cleaning the outside of the aerator pipe 5 is provided between the two mounting brackets 8. The belt 15 is used in conjunction with the cleaning component. An injection component capable of simultaneously injecting gas in different directions is provided on the outside of the aerator pipe 5.

[0022] In this implementation scheme, a limiting bracket 1 provides reliable support for components such as the fixing rod 2 and hydraulic cylinder 3, ensuring the stability of the entire downward air injection structure. This prevents the device from shaking when the air injection pipe 5 is inserted into and pulled out of the soft soil. The fixing rod 2 provides an installation platform for the hydraulic cylinder 3, ensuring that the hydraulic cylinder 3 stably transmits power to the pressing plate 4. The hydraulic cylinder 3 accurately transmits the thrust to the air injection pipe 5 through the pressing plate 4, controlling the depth and force of the air injection pipe 5's insertion into the soft soil. The pressing plate 4 receives and evenly transmits the thrust of the hydraulic cylinder 3 to the air injection pipe 5. The limiting sliders on both sides cooperate with the limiting holes of the limiting bracket 1 to guide the air injection pipe 5 to move stably in the vertical direction, preventing the air injection pipe 5 from tilting or deviating during operation, thus improving the accuracy of air injection. The air injection pipe 5 serves as a direct channel for injecting high-pressure gas into the soft soil, and the outer injection component enables multi-angle air jetting, expanding... The effective range of the gas in soft soil is controlled by a fixed base 6 that securely holds the motor 7. The motor 7 serves as the power source for the cleaning component, driving the cleaning cylinder 10 to rotate via a belt 15. This achieves automated cleaning of the outer wall of the air injection pipe 5. The belt 15 transmits power from the motor 7 to the cleaning cylinder 10 of the cleaning component. Utilizing the stability and elastic buffering characteristics of the belt 15 transmission, power is transmitted smoothly, ensuring that the cleaning cylinder 10 rotates at a uniform speed. The mounting bracket 8 provides an installation position for the mounting cylinder 9 of the cleaning component, ensuring the stability of the cleaning component and enabling smooth cleaning operations. The cleaning component achieves efficient, automatic, and safe cleaning of the outer wall of the air injection pipe 5, extending the service life of the air injection pipe 5 and reducing the frequency and cost of replacing equipment parts. The spray component expands the diffusion range of the gas in soft soil through multi-angle air jets, improving the efficiency and quality of saline-alkali land improvement.

[0023] Specifically, the cleaning assembly includes a mounting cylinder 9, a cleaning cylinder 10 is rotatably mounted inside the mounting cylinder 9, several nylon bristles 11 are fixedly mounted inside the cleaning cylinder 10, an annular limiting groove 12 is provided on the inner side of the mounting cylinder 9, a limiting ring 13 is fixedly mounted on the outer side of the cleaning cylinder 10, the annular limiting groove 12 and the limiting ring 13 are used in conjunction, and a transmission groove 14 is provided on the outer side of the cleaning cylinder 10, the outer side of the transmission groove 14 is sleeved with the inner side of the belt 15.

[0024] In this embodiment, by setting the mounting cylinder 9, a stable and suitable rotation space is provided for the cleaning cylinder 10. As the direct executor of the cleaning operation, the cleaning cylinder 10, with its internally fixed nylon bristles 11, can thoroughly clean the outer wall of the air injection pipe 5 during rotation. The nylon bristles 11 are soft yet resilient, and under the high-speed rotation of the cleaning cylinder 10, they can efficiently remove dirt, impurities, and other grime adhering to the outer wall of the air injection pipe 5. Due to their softness, they will not cause any scratching or wear to the outer wall of the air injection pipe 5 during the cleaning process, effectively extending the service life of the air injection pipe 5. (Annular limit) The groove 12 and the limiting ring 13 together form a stable limiting structure. When the cleaning cylinder 10 rotates, the limiting ring 13 slides smoothly in the annular limiting groove 12, ensuring that the cleaning cylinder 10 always maintains a stable rotation state without shaking or deviation, and also preventing the cleaning cylinder 10 from detaching from the mounting cylinder 9. The transmission groove 14 is tightly fitted with the inner side of the belt 15. The power output by the motor 7 is transmitted to the transmission groove 14 through the belt 15, and then accurately converted into the rotational power of the cleaning cylinder 10, driving the cleaning cylinder 10 to rotate continuously and stably, so that the automated cleaning function of the entire cleaning component can be successfully realized.

[0025] Specifically, the injection assembly includes several movable holes, which are symmetrically opened on the outside of the air injection pipe 5. A sleeve 16 is movably installed inside the movable holes. A sealing ring 17 is fixedly installed on the outside of the sleeve 16. The sealing ring 17 is located inside the air injection pipe 5. Two rectangular limiting grooves 18 are opened on the inside of the sleeve 16. A spring 22 is fixedly installed between the two sleeves 16.

[0026] In this implementation scheme, the movable holes provide space for the sleeve 16 to move. The symmetrical design expands the range of gas action in soft soil, which is beneficial for more comprehensive improvement of soft soil in saline-alkali land. The sleeve 16 is movably installed in the movable holes and can be moved flexibly. Its position can be adjusted according to the insertion of the air injection pipe 5 into the soft soil to adapt to different operational needs. The sealing ring 17 is fixed on the outside of the sleeve 16 and located inside the air injection pipe 5, which plays a good sealing role and prevents high-pressure gas from leaking from the gap between the sleeve 16 and the air injection pipe 5, ensuring that all gas can be effectively injected into the soft soil through the air outlet pipe 19. The slot 18 works in conjunction with the rectangular limiting block 21 on the outside of the air outlet pipe 19 to ensure that the air outlet pipe 19 moves smoothly within the sleeve 16 and to prevent the air outlet pipe 19 from detaching from the sleeve 16 during gas injection. When the air injection pipe 5 is inserted into the soft soil, the resistance of the soft soil will compress the spring 22, causing the spring 22 to contract and reducing the resistance to the insertion of the air injection pipe 5, making the insertion process smoother. When the air injection pipe 5 is inserted into the appropriate position, the spring 22 releases its elastic force, pushing the sleeve 16 to move outward and further fixing the air injection pipe 5. After the spring 22 pushes the sleeve 16 out, the sealing ring 17 will block the gap between the sleeve 16 and the movable hole.

[0027] Specifically, the injection assembly also includes several air outlet pipes 19, which are movably installed inside the sleeve 16. Two air outlet pipes 19 form a group. Four air outlet holes 20 are symmetrically opened on the inner side of the air outlet pipe 19. Rectangular limiting blocks 21 are symmetrically fixedly installed on the outer side of the air outlet pipe 19. The rectangular limiting blocks 21 are used in conjunction with the rectangular limiting grooves 18. A conical sealing block is fixedly installed at one end of the air outlet pipe 19.

[0028] In this embodiment, an outlet pipe 19 is provided as a gas transmission channel connecting the injection pipe 5 and the loose soil. It is movably installed inside the sleeve 16. Air outlet holes 20 are symmetrically arranged inside the outlet pipe 19, with four air outlet holes 20 on each outlet pipe 19. This ensures that the gas is sprayed out evenly and dispersedly from the outlet pipe 19, enhancing the uniformity of gas diffusion in the loose soil. This allows the gas to react more fully with the saline-alkali components in the loose soil, effectively promoting the improvement of saline-alkali land. The rectangular limiting block 21 fits tightly with the rectangular limiting groove 18 on the inner side of the sleeve 16, ensuring that the outlet pipe 19 moves smoothly within the sleeve 16, avoiding rotation or shaking, thereby ensuring the spray direction of the air outlet holes 20. Stable, allowing gas to be injected precisely into soft soil in a predetermined direction and angle, improving the accuracy and effectiveness of the injection. When the high-pressure gas pushes the outlet pipe 19, the cooperation between the rectangular limiting block 21 and the rectangular limiting groove 18 can effectively prevent the outlet pipe 19 from detaching from the sleeve 16, ensuring the safety and stability of the injection assembly and avoiding injection failures caused by the outlet pipe 19 falling off. In the early stage of injection, the conical sealing block can effectively seal the outlet pipe 19, allowing the gas pressure in the injection pipe 5 to accumulate. When the pressure reaches a certain level, it pushes the outlet pipe 19 to move outward and begins to inject. When the injection pipe 5 is inserted into the soft soil, its conical design can reduce the insertion resistance, allowing the injection pipe 5 to smoothly enter the soft soil.

[0029] Specifically, limit holes are provided on one side of both limit brackets 1, and limit sliders are fixedly installed on both sides of the pressing plate 4. The limit holes and limit sliders are used in conjunction.

[0030] In this embodiment, by setting a limiting hole on the limiting bracket 1, a precise moving track is provided for the limiting slider of the pressing plate 4. The existence of the limiting hole allows the pressing plate 4 to move along a fixed direction during up and down movement, ensuring the stability and straightness of the pressing plate 4's movement. This indirectly ensures the verticality and positional accuracy of the air injection pipe 5 installed at the bottom of the pressing plate 4 when it is inserted into and pulled out of the soft soil. The limiting slider and the limiting hole on the limiting bracket 1 are tightly matched, effectively limiting the range and direction of movement of the pressing plate 4, preventing the pressing plate 4 from shifting, tilting or shaking when subjected to the thrust of the hydraulic cylinder 3 or other external forces.

[0031] Specifically, the air injection pipe 5 is fixedly installed with a spiral hose on the outside, and the other end of the spiral hose is fixedly installed with the air outlet of the air injection machine body.

[0032] In this embodiment, a spiral flexible hose is installed to connect the gas injection pipe 5 to the gas outlet of the gas injector body, serving as a gas transmission channel. It has good flexibility and can adapt to changes in position and angle of the gas injection pipe 5 during insertion and extraction from soft soil. It does not hinder the movement of the gas injection pipe 5, ensuring that high-pressure gas can be smoothly delivered from the gas injector body to the gas injection pipe 5 and then injected into the soft soil, maintaining the continuity of the gas injection operation.

[0033] In summary: When using this utility model, the main body of the aeration machine is placed stably near the saline-alkali land to be improved. The main body of the aeration machine is equipped with a mobile power supply and a high-pressure air pump to power the main body and motor 7. The hydraulic cylinder 3 is activated, and its output end extends to push the pressing plate 4 downwards. Because the limiting sliders on both sides of the pressing plate 4 cooperate with the limiting holes on the limiting bracket 1, the pressing plate 4 can only descend vertically, causing the bottom aeration pipe 5 to be inserted vertically into the loose soil. When the aeration pipe 5 is inserted, the sleeve 16 of the injection component is resisted by the soil within the movable hole, compressing the spring 22 between the two sleeves 16. The sleeves 16 retract into the movable hole, reducing the insertion resistance of the aeration pipe 5 and making the insertion process smoother. After being inserted into the appropriate position... Spring 22 releases its elastic force to push sleeve 16 out into the soft soil. Due to the conical sealing plate, spring 22 easily pushes sleeve 16 out. At this time, the sealing ring 17 on the outside of sleeve 16 will block the gap between sleeve 16 and the movable hole to prevent air leakage. The high-pressure air pump in the main body of the air injector is started, and the generated high-pressure gas is stably delivered to the air injection pipe 5 through the spiral hose. Initially, the conical sealing block at one end of the air outlet pipe 19 seals the air outlet pipe 19, causing the gas pressure in the air injection pipe 5 to continuously increase. When the pressure is sufficient to overcome the friction between the air outlet pipe 19 and sleeve 16 and the resistance of the conical sealing block, the high-pressure gas pushes the air outlet pipe 19 outward from the sleeve 16. The rectangular limiting block on the outside of the air outlet pipe 19... The rectangular limiting groove 18 inside the sleeve 16, 21, cooperates with each other to ensure that the air outlet pipe 19 maintains a stable direction during movement, preventing rotation or deviation, and preventing the air outlet pipe 19 from detaching from the sleeve 16. The four symmetrically opened air outlet holes 20 inside the air outlet pipe 19 spray high-pressure gas into the soft soil at multiple angles and in all directions, greatly expanding the range of action of the gas in the soft soil, promoting the full reaction of the gas with the saline and alkaline components in the soil, and realizing the improvement of saline and alkaline land. After the gas injection operation is completed, the hydraulic cylinder 3 is controlled to move in the reverse direction, its output end retracts, and pulls the pressing plate 4 and the air injection pipe 5 to be smoothly pulled out of the soil. The motor 7 is started, and the output end of the motor 7 drives the cleaning component to operate through the belt 15. The inner side of the belt 15 is tightly fitted with the transmission groove 14 on the outer side of the cleaning cylinder 10, driving the cleaning cylinder 10 to rotate at high speed inside the mounting cylinder 9. The annular limiting groove 12 on the inner side of the mounting cylinder 9 and the limiting ring 13 on the outer side of the cleaning cylinder 10 work together to ensure that the cleaning cylinder 10 remains stable during rotation and does not shake or deviate. As the air injection pipe 5 moves upward, the nylon bristles 11 inside the cleaning cylinder 10 make full contact with the outer wall of the air injection pipe 5, thoroughly cleaning the dirt and impurities attached to the outer side of the air injection pipe 5, preventing them from corroding and clogging the air injection pipe 5, and effectively extending the service life of the air injection pipe 5. After the air injection and cleaning operations are completed, the motor 7, the high-pressure air pump in the main body of the air injector are turned off in sequence, and finally the mobile power supply is turned off.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A high-pressure soil aeration machine for improving saline-alkali land, characterized in that, The device includes a gas injector body and two limiting brackets (1). The two limiting brackets (1) are fixedly installed on one side of the gas injector body. Fixed rods (2) are fixedly installed on opposite sides of the two limiting brackets (1). A hydraulic cylinder (3) is fixedly installed between the two fixed rods (2). A pressing plate (4) is fixedly installed at the output end of the hydraulic cylinder (3). A gas injection pipe (5) is fixedly installed at the bottom of the pressing plate (4). A fixed base (6) is fixedly installed on one side of the gas injector body. A motor (7) is fixedly installed on one side of the fixed base (6). A belt (15) is sleeved on the output end of the motor (7). Two mounting brackets (8) are fixedly installed on one side of the gas injector body. A cleaning component for cleaning the outside of the gas injection pipe (5) is provided between the two mounting brackets (8). The belt (15) is used in conjunction with the cleaning component. A spraying component capable of simultaneously spraying gas in different directions is provided on the outside of the gas injection pipe (5).

2. The soil high-pressure gas injector for salinized land improvement according to claim 1, characterized in that, The cleaning assembly includes a mounting cylinder (9), a cleaning cylinder (10) is rotatably mounted inside the mounting cylinder (9), a plurality of nylon bristles (11) are fixedly mounted inside the cleaning cylinder (10), an annular limiting groove (12) is provided on the inner side of the mounting cylinder (9), a limiting ring (13) is fixedly mounted on the outer side of the cleaning cylinder (10), the annular limiting groove (12) and the limiting ring (13) are used in conjunction, a transmission groove (14) is provided on the outer side of the cleaning cylinder (10), and the outer side of the transmission groove (14) is sleeved with the inner side of the belt (15).

3. The soil high-pressure gas injector for salinized land improvement according to claim 1, characterized in that, The injection assembly includes several movable holes, which are symmetrically opened on the outside of the air injection pipe (5). A sleeve (16) is movably installed inside the movable hole. A sealing ring (17) is fixedly installed on the outside of the sleeve (16). The sealing ring (17) is located inside the air injection pipe (5). Two rectangular limiting grooves (18) are opened on the inside of the sleeve (16). A spring (22) is fixedly installed between the two sleeves (16).

4. The soil high-pressure gas injector for salinized land improvement according to claim 3, characterized by the fact that The injection assembly also includes several air outlet pipes (19), which are movably installed inside the sleeve (16). Two air outlet pipes (19) form a group. Four air outlet holes (20) are symmetrically opened on the inner side of the air outlet pipe (19). Rectangular limiting blocks (21) are symmetrically fixedly installed on the outer side of the air outlet pipe (19). The rectangular limiting blocks (21) are used in conjunction with the rectangular limiting grooves (18). A conical sealing block is fixedly installed at one end of the air outlet pipe (19).

5. The soil high-pressure gas injector for salinized land improvement according to claim 1, characterized in that, Limiting holes are provided on one side of both limiting brackets (1), and limiting sliders are fixedly installed on both sides of the pressing plate (4). The limiting holes and limiting sliders are used in conjunction.

6. The soil high-pressure gas injector for salinized land improvement according to claim 3, characterized by the fact that The air injection pipe (5) is fixedly installed with a spiral hose on the outside, and the other end of the spiral hose is fixedly installed with the air outlet of the air injection machine body.

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