CN-224205683-U - Soil nitrogen fixation device

CN224205683UCN 224205683 UCN224205683 UCN 224205683UCN-224205683-U

Abstract

The utility model discloses a soil nitrogen fixation device which comprises a frame, a support column arranged on the frame, a clamping claw mechanism matched with the support column for installation, a nitrogen fixation mechanism and a cooling mechanism, wherein the clamping claw mechanism is used for clamping the nitrogen fixation mechanism of soil, the cooling mechanism is used for circularly cooling the nitrogen fixation mechanism, the clamping claw mechanism is used for stably clamping the nitrogen fixation mechanism to ensure the clamping stability in the experimental process, the cooling mechanism is used for effectively cooling the nitrogen fixation mechanism in the use process, and the whole structure is convenient to adjust and is convenient for experimental test on different soils.

Inventors

NI CHENGSHENG
CHENG HONG
Shu Jiawang
CUI YINGHUI

Assignees

西南大学

Dates

Publication Date: 20260508
Application Date: 20250428

Claims (8)

1. The soil nitrogen fixation device is characterized by comprising a frame, a support column arranged on the frame, a clamping claw mechanism matched with the support column, a nitrogen fixation mechanism and a cooling mechanism, wherein the clamping claw mechanism clamps the nitrogen fixation mechanism and is used for fixing nitrogen in soil, and the cooling mechanism is used for circularly cooling the nitrogen fixation mechanism.
2. The soil nitrogen fixation device of claim 1, wherein the nitrogen fixation mechanism comprises a condensation base, a cathode disc, a high temperature resistant rubber ring, a quartz pressure disc and an anode disc, wherein the condensation base is installed by matching with the clamping claw mechanism, the cathode disc is installed on the condensation base, the high temperature resistant rubber ring is installed on the cathode disc, the quartz pressure disc and the anode disc are installed on the high temperature resistant rubber ring, and the high temperature resistant rubber ring is arranged between the cathode disc and the quartz pressure disc to form an accommodating space for placing soil.
3. The soil nitrogen fixation apparatus as recited in claim 2, wherein the upper surface of the condensation base is provided with a base mounting groove for mounting with the high temperature resistant rubber ring, and the condensation base is provided with an inlet joint and an outlet joint for use with the cooling mechanism.
4. The soil nitrogen fixation apparatus as recited in claim 3, wherein the condensation base is provided with a condensation channel having a continuous U-shaped structure, and two ends of the condensation channel are respectively communicated with the cooling inlet and the cooling outlet in a one-to-one correspondence manner.
5. The soil nitrogen fixation device of claim 1, wherein the clamping jaw mechanism comprises an adjustable clamping jaw assembly and a passive clamping jaw assembly which are arranged on the supporting column, a linkage rod is arranged between the adjustable clamping jaw assembly and the passive clamping jaw assembly, and the adjustable clamping jaw assembly and the passive clamping jaw assembly are at the same horizontal height after being locked.
6. The soil nitrogen fixation apparatus as recited in claim 5, wherein the adjustable clamping jaw assembly comprises a guide clamping seat, a lower supporting arm, an upper pressing arm and a locking rod, wherein the guide clamping seat is sleeved on the supporting column, the lower supporting arm is fixedly connected to the guide clamping seat, and the nitrogen fixation mechanism is arranged between the lower supporting arm and the upper pressing arm and is locked through the locking rod.
7. The soil nitrogen fixation device of claim 6, wherein the guide holder comprises a sliding sleeve part sleeved on the support column in a sliding manner and a clamping part formed by extending outwards along the end part of the sliding sleeve part, the clamping part comprises two clamping plates which are parallel to each other, and the two clamping plates are locked and fixed on the support column through a locking bolt.
8. The soil nitrogen fixation apparatus as recited in claim 2, wherein the cooling mechanism is disposed at a lower end of the frame and is configured to cool the condensation base in a circulating manner.

Description

Soil nitrogen fixation device Technical Field The utility model relates to the field of agriculture, in particular to a soil nitrogen fixation device. Background The use of soil as a carrier to convert nitrogen in air into NO3-N through a DBD plasma device and supply it to crops can be regarded as a new fertilization method with various advantages. Firstly, NO3-N generated by DBD plasma in soil cannot be nitrified like conventional fertilization, so that the fertilizer utilization rate can be improved, and the excessive dependence on nitrogen fertilizer is reduced. And secondly, the DBD plasma reaction condition is mild, no specific high-temperature and high-pressure condition is needed, fossil energy sources such as coal and petroleum are not consumed, and greenhouse gases are not generated in the reaction process to influence the environment. Compared with an industrial catalyst, the method has the advantages that soil is directly used as a carrier for NO3-N sedimentation, so that the problem that ammonia generated by using plasma is not easy to collect is solved, and the soil is a natural material and is more environment-friendly. From the aspect of cost, expensive hydrogen is not required to be used as a raw material, and nitrogen and oxygen in air are directly used as raw materials, so that the industrial production cost can be greatly reduced, and meanwhile, the reaction can be fully excited by only using electric energy as an energy source. The nitrogen fixation device is very important for the research directly acting on different kinds of soil, and the existing soil nitrogen fixation device that adopts does not directly act on the research of soil, also needs to satisfy convenient operation control to different soil experiments simultaneously to the later stage is applied to and is promoted conveniently. Therefore, in order to solve the above problems, a soil nitrogen fixation device is needed for performing experimental detection on different soils and under different conditions. Disclosure of utility model In view of this, this technical scheme's soil nitrogen fixation device can stabilize centre gripping assurance experimental in-process centre gripping stability with nitrogen fixation mechanism through clamping jaw mechanism, can carry out effective cooling to nitrogen fixation mechanism in the use through cooling body, and overall structure is adjusted conveniently, is convenient for carry out experimental test to different soils. The soil nitrogen fixing device comprises a frame, a support column arranged on the frame, a clamping claw mechanism matched with the support column, a nitrogen fixing mechanism and a cooling mechanism, wherein the clamping claw mechanism clamps the nitrogen fixing mechanism and is used for fixing nitrogen to soil, and the cooling mechanism is used for circularly cooling the nitrogen fixing mechanism. Further, the nitrogen fixing mechanism comprises a condensation base, a cathode disc, a high-temperature-resistant rubber ring, a quartz pressure disc and an anode disc, wherein the condensation base is installed by matching with the clamping claw mechanism, the cathode disc is installed on the condensation base, the high-temperature-resistant rubber ring is installed on the cathode disc, the quartz pressure disc and the anode disc are installed on the high-temperature-resistant rubber ring, and the high-temperature-resistant rubber ring is arranged between the cathode disc and the quartz pressure disc to form an accommodating space for placing soil. Further, a base mounting groove matched with the high-temperature-resistant rubber ring for mounting is formed in the upper surface of the condensation base, and an inlet joint and an outlet joint matched with the cooling mechanism for use are formed in the condensation base. Further, a condensing channel with a continuous U-shaped structure is arranged in the condensing base, and two ends of the condensing channel are respectively communicated with the cooling inlet and the cooling outlet in a one-to-one correspondence manner. Further, the clamping jaw mechanism comprises an adjustable clamping jaw assembly and a driven clamping jaw assembly which are arranged on the supporting column, a linkage rod is arranged between the adjustable clamping jaw assembly and the driven clamping jaw assembly, and the adjustable clamping jaw assembly and the driven clamping jaw assembly are at the same horizontal height after being locked. Further, the adjustable clamping jaw assembly comprises a guide clamping seat, a lower supporting arm, an upper pressing arm and a locking rod, wherein the guide clamping seat is sleeved on the supporting column, the lower supporting arm is fixedly connected onto the guide clamping seat, and the nitrogen fixing mechanism is arranged between the lower supporting arm and the upper pressing arm and is locked through the locking rod. Further, the guide holder comprises a sliding sleeve part sleeved on the sup