CN219455662U - Soil sample pretreatment device - Google Patents

Abstract

The utility model discloses a soil sample pretreatment device, which comprises a stirring mechanism for stirring samples to be exchanged in a centrifuge tube, wherein the stirring mechanism comprises a decelerating electric motor and a stirring paddle which is made of polytetrafluoroethylene materials and has a width smaller than the diameter of the centrifuge tube, the upper end of the stirring paddle is connected with a downward rotating shaft of the decelerating electric motor through a coupling, the lower end of the stirring paddle is matched with the bottom of the centrifuge tube, the decelerating electric motor is arranged on a lifting frame plate through a motor seat, the left end and the right end of the lifting frame plate are respectively and slidably arranged on left and right slide rod rails through left and right slide blocks, the left and right slide rod rails are arranged on a bottom plate, and a tightening screw rod for locking the upper position and the lower position of the lifting frame plate is arranged on each slide block. The utility model has more sufficient stirring and more complete exchange, and reduces the loss of samples in the exchange process.

Description

Soil sample pretreatment device

Technical Field

The utility model relates to a soil sample analysis and detection technology, in particular to a soil sample pretreatment device.

Background

The detection of the cation exchange amount, the total amount of exchangeable salt groups, the exchangeable calcium and the exchangeable magnesium in the soil is an important index for soil detection, and the detection of the content of the cation exchange amount, the total amount of exchangeable salt groups, the exchangeable calcium and the exchangeable magnesium can be used as an important index for evaluating the soil fertility preservation capability, so that the method has important significance for improving the soil and providing, preserving and stabilizing the fertilizer.

The soil sample can enable the components to be detected to exist in the treated soil in an ammonium ion saturated soil or exist in a solution in an ion state through pretreatment, so that detection personnel can conveniently use equipment to detect the components.

At present, the main pretreatment method of the soil sample is to exchange soil exchangeable components by using reagents such as ammonium acetate, alcohol, hydrochloric acid or calcium acetate and the like in a manual stirring mode, so as to leave ammonium ion saturated soil or exchanged solution. When using glass stick cover rubber tube to stir, if the viscosity of meetting soil is great, soil can glue on rubber tube and centrifugal tube wall, hardly washes down, and the gap in the middle of glass stick and the rubber tube can run in addition to the sample, causes soil loss, and exchange becomes incomplete to influence the survey result of component.

In addition, each sample is exchanged more times, and when a large number of samples are detected, the manual stirring speed is slower, the labor intensity is higher, and the efficiency is low.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to solve the technical problem of providing a soil sample pretreatment device for replacing manual work.

Can solve the soil sample preprocessing device of above-mentioned technical problem, its technical scheme includes the rabbling mechanism that waits to exchange the sample in the centrifuging tube to stir, and is different, rabbling mechanism includes speed reduction electric motor and adopts polytetrafluoroethylene material preparation and the width to be less than the stirring rake of centrifuging tube pipe diameter, the lower extreme shape of stirring rake matches the pipe bottom of centrifuging tube through the decurrent pivot of coupling joint speed reduction electric motor, speed reduction electric motor passes through the motor seat and installs on the lifter plate, the left and right both ends of lifter plate are through left and right slider sliding mounting respectively on left and right slider rail, and left and right slider rail mounting is on the bottom plate, is equipped with the tight screw rod of locking lifter plate upper and lower position on each slider.

Further, in order to stir the sample in the more than two centrifuging tubes simultaneously, more than two stirring paddles are arranged in a left-right direction, are arranged in a contraposition with each stirring paddle, are provided with a deceleration electric motor installed on the lifting frame plate through a motor seat, and the rotating shaft of each deceleration electric motor is connected with the contraposition stirring paddles through a shaft coupling.

Further, each of the electric motors is connected to an electric motor governor via a parallel line i, the electric motor governor being connected to a power adapter, the power adapter being connected to a power source.

Conventionally, a connecting frame plate is arranged between the left and right slide rod rails.

The utility model has the beneficial effects that:

1. in the structure of the soil sample pretreatment device, the height of the stirring paddle can be adjusted according to the requirement, so that the actual operation (stirring, cleaning the stirring paddle and taking and placing the centrifuge tube) is facilitated, and the speed-reducing electric motor driving the stirring paddle has larger torsion, so that the samples with larger viscosity are conveniently stirred.

2. In the structure of the utility model, the stirring paddle made of polytetrafluoroethylene material is not easy to adhere to soil samples and is easy to clean, and soil adhered to the wall of the centrifugal tube can be easily scraped in the stirring process, so that the stirring paddle has a full stirring effect, the exchange is more complete, and the loss of samples in the exchange process is reduced.

3. According to the utility model, in the stirring process, the rotation direction of the decelerating electric motor can be regulated according to actual conditions, so that stirring is more sufficient, a plurality of stirring paddles driven by the decelerating electric motor can be connected in parallel according to requirements, samples in a plurality of centrifuge tubes can be simultaneously stirred, the pretreatment efficiency is improved, and the labor intensity of a tester is greatly reduced.

Drawings

Fig. 1 is a front view of an embodiment of the present utility model.

Fig. 2 is a top view of the embodiment of fig. 1.

Fig. 3 is a side view of the embodiment of fig. 1.

Fig. 4 is a schematic diagram of the power distribution assembly of the stirring mechanism of the embodiment of fig. 1.

Drawing number identification: 1. decelerating the electric motor; 2. stirring paddles; 3. a coupling; 4. a motor base; 5. lifting the frame plate; 6. a slide block; 7. a slide rod rail; 8. a bottom plate; 9. tightly fixing a screw rod; 10. a connecting frame plate; 11. a line I; 12. a power adapter; 13. an electric motor governor; 14. line II.

Detailed Description

The technical scheme of the utility model is further described below with reference to the embodiment shown in the drawings.

The utility model relates to a soil sample pretreatment device which comprises a stirring mechanism and a lifting mechanism.

The lifting mechanism comprises a left slide rod rail 7 and a right slide rod rail 7 which are vertically arranged on a bottom plate 8, a sliding block 6 is slidably arranged on each slide rod rail 7, a fastening screw 9 is arranged on each sliding block 6 to fix the sliding block 6 on the slide rod rail 7, the left end and the right end of a horizontal lifting frame plate 5 are respectively arranged on the left sliding block 6 and the right sliding block 6, and a horizontal connecting frame plate 10 is arranged between the left slide rod rail 7 and the right slide rod rail 7, as shown in figures 1, 2 and 3.

Based on lifting frame board 5 is provided with multiunit left and right to the rabbling mechanism that the interval equidistance set up, each rabbling mechanism includes the speed reduction electric motor 1 of upper and lower position and adopts stirring rake 2 that polytetrafluoroethylene material made (be difficult for gluing soil sample, even glued soil sample, be washed down very easily), each speed reduction electric motor 1 installs on lifting frame board 5's corresponding position through corresponding motor seat 4, the upper portion body of rod of each stirring rake 2 passes through shaft coupling 3 and connects the pivot that corresponding speed reduction electric motor 1 stretches out downwards, the lower part oar body of each stirring rake 2 is the upper and lower latticed framework of platykurtic, the bottom of the oar body is the arc of downward arch, this arc is unanimous with the bottom concave arc of the centrifuging tube of splendid attire soil sample, as shown in fig. 1, fig. 2, fig. 3.

The circuit between each decelerating electric motor 1 is connected in parallel through a line I11 to an electric motor speed regulator 13 (the rotating speed of the stirring paddle 2 is regulated according to the requirement), the electric motor speed regulator 13 is connected with a power adapter 12 through a line II 14, and a power plug of the power adapter 12 is connected with a power socket, as shown in fig. 4.

The method for treating the soil sample comprises the following steps:

1. the centrifuge tube loaded with the sample to be exchanged is placed on a matched centrifuge tube rack and a proper amount of reagent is added.

2. The centrifuge tube rack is placed in a stirring position on the bottom plate 8.

3. The height of the lifting frame plate 5 is adjusted, and the left slide block 6 and the right slide block 6 are locked by tightening the fixing screw 9, so that the stirring paddle 2 is adjusted to a proper stirring position in the centrifugal tube.

4. The rotation speed of the electric motor 1 is controlled by the electric motor speed regulator 13, and the stirring paddle 2 is regulated to a proper rotation speed according to the viscosity of the sample.

5. In the stirring process, according to the condition that the sample is attached to the wall of the centrifuge tube, the height of the centrifuge tube rack is adjusted, and the centrifuge tube rack is moved forwards, backwards, leftwards and rightwards, so that the stirring paddle 2 stirs the soil adhered to the wall of the centrifuge tube, and the exchange is more sufficient through full stirring.

6. When the sample processing is completed, the screw 9 is screwed, the stirring paddle 2 is moved out of the sample liquid surface by moving the lifting frame plate 5 to rise to a proper position, and the residual sample on the stirring paddle 2 is flushed into the centrifuge tube.

Claims (4)

1. Soil sample preprocessing device, including waiting to exchange the rabbling mechanism that the sample stirs in the centrifuging tube, its characterized in that: the stirring mechanism comprises a decelerating electric motor (1) and a stirring paddle (2) which is made of polytetrafluoroethylene materials and has a width smaller than the diameter of a centrifuge tube, wherein the upper end of the stirring paddle (2) is connected with a downward rotating shaft of the decelerating electric motor (1) through a coupler (3), the lower end of the stirring paddle (2) is matched with the bottom of the centrifuge tube, the decelerating electric motor (1) is installed on a lifting frame plate (5) through a motor seat (4), the left end and the right end of the lifting frame plate (5) are respectively and slidably installed on left and right slide rod rails (7) through left and right slide blocks (6), the left and right slide rod rails (7) are installed on a bottom plate (8), and a locking screw rod (9) for locking the upper position and the lower position of the lifting frame plate (5) is arranged on each slide block (6).

2. The soil sample pretreatment apparatus of claim 1, wherein: the stirring paddles (2) are arranged left and right, a deceleration electric motor (1) mounted on the lifting frame plate (5) through a motor seat (4) is arranged in alignment with each stirring paddle (2), and the rotating shaft of each deceleration electric motor (1) is connected with the aligned stirring paddles (2) through a coupling (3).

3. The soil sample pretreatment apparatus according to claim 2, wherein: each decelerating electric motor (1) is connected to an electric motor speed regulator (13) through a parallel circuit I (11), the electric motor speed regulator (13) is connected with a power adapter (12), and the power adapter (12) is connected with a power supply.

4. A soil sample pretreatment apparatus according to any one of claims 1 to 3, wherein: a connecting frame plate (10) is arranged between the left and right slide rod rails (7).