Rapid pH value measuring device for soil detection

Abstract

The utility model relates to the technical field of soil acidity and alkalinity determination, in particular to a rapid acidity and alkalinity determination device for soil detection, which comprises a shell and a stirring unit arranged in the shell, a rotating shaft is arranged in the shell in the vertical direction, the axis of the rotating shaft and the axis of the shell are collinear, when the stirring unit operates, the rotating shaft rotates around the axis of the rotating shaft, a plurality of stirring assemblies are arranged on the rotating shaft in the vertical direction, each stirring assembly comprises a plurality of stirring rods, and the stirring rods are evenly distributed around the axis of the rotating shaft. The stirring rod is hinged to the rotating shaft, a control groove is formed in the rotating shaft in the vertical direction, a plurality of lifting discs are movably arranged in the control groove in the vertical direction, and connecting rods hinged to the lifting discs and the hinge rod are arranged between the lifting discs and the hinge rod. According to the utility model, the cleaning efficiency of the measuring device is improved, the measuring speed of the measuring device is further improved, and the accuracy of a measuring result is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil acidity and alkalinity determination technical field, concretely relates to a kind of for soil detection's acidity and alkalinity rapid determination device. BACKGROUND

[0002] Currently, soil acidity and alkalinity detection equipment is usually used to detect the acidity and alkalinity of soil. During operation, the soil to be detected is poured into the inside of the collection box, then 2-3 times water is added, and then the spiral blade is driven by the driving device to stir and mix the soil and water. After stirring, the mixture in the collection box is allowed to stand, and after the mixture is settled, the PH value of the supernatant is detected by the acidity and alkalinity detection probe, so as to realize the detection of soil acidity and alkalinity. In the existing detection equipment, part of the soil will be deposited at the bottom of the equipment, and the stirring device cannot stir the soil deposited at the bottom, resulting in deviation of the final detection result.

[0003] Chinese patent CN222013740U discloses a soil acidity and alkalinity rapid detection equipment, which comprises a base and a stirring mechanism. A collection box is arranged at the middle of the upper end of the base, a sealing cover is hingedly connected to the mounting groove at the upper end of the collection box through a hinge, a protective cover is arranged at the middle of the right end of the collection box, an acidity and alkalinity detection probe is arranged at the middle of the lower end of the sealing cover, the stirring mechanism comprises a rotating cylinder and a spiral blade, the rotating cylinder is rotatably connected to the avoiding slot arranged at the middle of the right wall of the collection box through a sealing bearing, the middle of the outer arc surface of the rotating cylinder is provided with a spiral blade, and a single-chip microcomputer is further arranged.

[0004] Although the above-mentioned scheme sets multiple mixing modes to improve the mixing effect of soil and water, more mixing devices will make the subsequent cleaning more cumbersome. This is because after each determination of a single sample, in order to ensure the accuracy of the determination result, the used determination device needs to be cleaned before the second determination. Although some existing determination devices have automatic cleaning function, they still need to be cleaned regularly by human. The determination device with complex mixing device will make the cleaning time longer, and thus reduce the determination efficiency. UTILITY MODEL CONTENTS

[0005] In view of the above problems, a soil acidity and alkalinity rapid determination device is provided, which is characterized in that the stirring rod is hingedly connected to the rotating shaft, so that the stirring rod can be switched to the retracted state when cleaning is needed, thereby facilitating the cleaning of the inside of the shell by the staff and avoiding the stirring rod extending to hinder the cleaning process.

[0006] To solve the prior art problems, the utility model provides a kind of for soil detection's quick determination device of pH value, including shell and the stirring unit being arranged in shell;Shell is cylindrical structure, is provided with rotating shaft in shell along vertical direction, the axis of rotation shaft is collinear with the axis of shell, when stirring unit operates, rotating shaft rotates around its axis, multiple sets of stirring assembly are arranged along vertical direction on rotating shaft, each set of stirring assembly includes multiple stirring rods, stirring rod is evenly arranged around the axis of rotation shaft, and stirring rod is hinged on rotating shaft, control groove is opened in the inside of rotating shaft along vertical direction, multiple lifting discs are movably arranged in control groove along vertical direction, lifting disc and stirring assembly one to one, lifting disc has highest position on its moving path, the height when lifting disc is located highest position is still lower than the hinge height of stirring rod and rotating shaft, connecting rod is arranged between lifting disc and hinge rod, the both ends of connecting rod are respectively hinged with the end of lifting disc and hinge rod.

[0007] Preferably, the stirring rod has an expanded state and a contracted state, when the soil is stirred, the stirring rod is in the expanded state, the extension direction of the stirring rod is parallel to the radial direction of the rotating shaft, when the shell is manually cleaned, the stirring rod is in the contracted state, at this time, the extension direction of the stirring rod has an included angle with the axis of the rotating shaft, and the included angle is an acute angle.

[0008] Preferably, a traction rod is movably arranged in the control groove along the vertical direction, the lifting disc is fixedly arranged on the traction rod, a traction sleeve is arranged on the upper portion of the shell, the traction rod extends into the traction sleeve and is in sliding fit with the traction sleeve, a first air pump is arranged on the upper portion of the traction sleeve, and the first air pump is used to inject external air into the traction sleeve or discharge air in the traction sleeve.

[0009] Preferably, a driving unit for driving the rotating shaft to rotate is arranged on the upper portion of the rotating shaft, the driving unit includes a gear ring fixedly arranged on the upper end of the rotating shaft along the axis of the rotating shaft, a gear is engaged on one side of the gear ring, and a rotary driver for driving the gear to rotate is arranged on the upper end of the gear.

[0010] Preferably, a sliding groove is arranged on the end of the stirring rod away from the rotating shaft along the extension direction of the stirring rod, an extension rod is slidably arranged in the sliding groove along the extension direction of the sliding groove, a gap is formed between the extension rod and the bottom of the sliding groove, a spring is arranged in the gap along the extension direction of the sliding groove, and the both ends of the spring are fixedly connected with the end of the extension rod and the bottom of the sliding groove.

[0011] Preferably, a plurality of inflation openings are uniformly arranged on the bottom of the shell, a second air pump in communication with the inflation openings is arranged on one side of the shell, and the second air pump supplies air to the inflation openings.

[0012] The utility model has the beneficial effects compared with the prior art:

[0013] 1、The stirring rod has an expanded state and a contracted state, when the soil is stirred, the stirring rod is in the expanded state, the extension direction of the stirring rod is parallel to the radial direction of the rotating shaft, when the shell is manually cleaned, the stirring rod is in the contracted state, at this time, the extension direction of the stirring rod and the axis of the rotating shaft form an acute angle, and the acute angle is an acute angle. When manually cleaning, the lifting disc provided in the control groove is first lifted, the stirring rod arranged in the radial direction of the rotating shaft is rotated to the contracted state, so that the worker is not hindered by the stirring rod when cleaning the inside of the shell, the cleaning efficiency of the measuring device is improved, the measuring speed of the measuring device is improved, and the accuracy of the measurement result is ensured.

[0014] 2、The extension direction of the stirring rod after contraction and the axis of the rotating shaft form an acute angle, which is to ensure that the stirring rod can be smoothly expanded under the action of the connecting rod when the lifting disc is lifted again. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of a rapid pH determination device for soil detection.

[0016] Figure 2 It is a perspective view of a rapid pH determination device for soil detection.

[0017] Figure 3 It is a perspective view of a rapid pH determination device for soil detection. Figure 2 It is a local enlarged view of A in the rapid pH determination device for soil detection.

[0018] Figure 4 It is a local enlarged view of B in the rapid pH determination device for soil detection. Figure 2 It is a local enlarged view of B in the rapid pH determination device for soil detection.

[0019] Figure 5 It is a perspective view of a rapid pH determination device for soil detection.

[0020] Figure 6 It is a perspective view of a rapid pH determination device for soil detection.

[0021] Figure 7 It is a local enlarged view of C in the rapid pH determination device for soil detection. Figure 6 It is a local enlarged view of C in the rapid pH determination device for soil detection.

[0022] Figure 8 It is a local perspective view of the stirring rod in the expanded state of the rapid pH determination device for soil detection.

[0023] Reference signs in the drawings are:

[0024] 1, housing; 11, feeding port; 12, switch door; 13, pH monitor; 14, discharge port; 15, cleaning nozzle; 16, inflation port; 17, second air pump; 2, stirring unit; 21, rotating shaft; 211, control groove; 22, stirring rod; 221, sliding groove; 222, spring; 223, extension rod; 23, lifting plate; 24, connecting rod; 25, traction rod; 26, traction sleeve; 27, first air pump; 28, driving unit; 281, gear ring; 282, gear; 283, rotary driver. DETAILED DESCRIPTION

[0025] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0026] Reference Figures 1-8 : a kind of for soil detection pH rapid determination device, including housing 1 and the stirring unit 2 of being arranged in housing 1;Housing 1 is cylindrical structure, rotating shaft 21 is arranged in vertical direction in housing 1, the axis of rotating shaft 21 is collinear with the axis of housing 1, when stirring unit 2 operates, rotating shaft 21 rotates around its axis, multiple sets of stirring assemblies are arranged in vertical direction on rotating shaft 21, each set of stirring assembly includes multiple stirring rods 22, stirring rod 22 is uniformly arranged around the axis of rotating shaft 21, and stirring rod 22 is hinged on rotating shaft 21, control groove 211 is opened in vertical direction in the inside of rotating shaft 21, multiple lifting plates 23 are movably arranged in vertical direction in control groove 211, lifting plate 23 corresponds to stirring assembly one to one, lifting plate 23 has the highest position on its moving path, the height when lifting plate 23 is located at the highest position is still lower than the height of the hinged portion of stirring rod 22 and rotating shaft 21, connecting rod 24 is hinged at the end of hinged rod and lifting plate 23 respectively.

[0027] It is worth noting that the hinged portion of stirring rod 22 and rotating shaft 21 separates stirring rod 22 into two unequal length paragraphs, the hinged portion of connecting rod 24 and stirring rod 22 is located on the paragraph of shorter length, so that lifting plate 23 can drive stirring rod 22 to rotate through connecting rod 24 when lifting.

[0028] A pouring opening 11 is formed on the top of the shell 1, and a switch door 12 is hinged to the pouring opening 11. An acid-base monitor 13 is vertically arranged on the top of the shell 1. A discharge opening 14 is arranged on the side wall of the lower side of the shell 1. When the soil is measured for the acid-base, a quantitative soil sample is poured into the shell 1 through the pouring opening 11. At this time, the lifting disc 23 in the control groove 211 is at the highest position in its stroke, and the stirring rod 22 extends along the radial direction of the rotating shaft 21. Then, a rated amount of water is poured into the shell 1, and the rotating shaft 21 starts to rotate. The rotating shaft 21 in rotation stirs the soil in the shell 1 through the stirring rod 22, and the rotating time of the rotating shaft 21 is preset. When the rotating shaft 21 rotates to the preset time, the rotating shaft 21 stops rotating, and the acid-base monitor 13 arranged on the top of the shell 1 detects the acid-base of the solution in the upper part of the shell 1. Thus, the measurement of the acid-base of the soil is completed.

[0029] Then, the measuring device starts to clean itself. The rotating shaft 21 is started again, so that the sediment and the soil at the bottom of the shell 1 are lifted up. At the same time, the discharge opening 14 is opened, and the mixture of the soil and water in the shell 1 is discharged under the action of the water flow. A cleaning nozzle 15 is arranged on the side wall of the shell 1. After the soil and water in the shell 1 are completely discharged, the cleaning nozzle 15 sprays clean water into the shell 1. At this time, the discharge opening 14 is closed, and the rotating shaft 21 rotates again. The rotating shaft 21 stirs the clean water in the shell 1 through the stirring rod 22. After a stirring rated time, the discharge opening 14 is opened again, and the sewage containing the soil in the shell 1 is discharged through the discharge opening 14. The above steps are repeated, and the stirring rated time and the number of repeated steps need to be determined according to the actual situation. Thus, the soil and water stains remaining in the shell 1 can be washed clean, and the self-cleaning of the measuring device is completed.

[0030] However, after being used for a period of time, the residual substances in the shell 1 still need to be cleaned manually, because the self-cleaning function has limitations and cannot completely and sufficiently clean the inside of the shell 1. Therefore, the retractable stirring rod 22 is particularly important. The stirring rod 22 has an expanded state and a retracted state. When the soil is stirred, the stirring rod 22 is in the expanded state, and the extension direction of the stirring rod 22 is parallel to the radial direction of the rotating shaft 21. When the shell 1 is manually cleaned, the stirring rod 22 is in the retracted state, and the extension direction of the stirring rod 22 has an acute angle with the axis of the rotating shaft 21. When the shell 1 is manually cleaned, the lifting disc 23 arranged in the control groove 211 is first lifted, and the stirring rod 22 arranged along the radial direction of the rotating shaft 21 is rotated to the retracted state. Thus, the worker will not be hindered by the stirring rod 22 when cleaning the inside of the shell 1, the cleaning efficiency of the measuring device is improved, the measuring speed of the measuring device is further improved, and the accuracy of the measurement result is ensured.

[0031] Referring to Figures 1-8 : The stirring rod 22 has an expanded state and a retracted state, in the expanded state, the stirring rod 22 is parallel to the radial direction of the rotating shaft 21 when the soil is stirred, in the retracted state, the stirring rod 22 is at an acute angle with the axis of the rotating shaft 21 when the shell 1 is manually cleaned.

[0032] The extension direction of the retracted stirring rod 22 is at an acute angle with the axis of the rotating shaft 21, which is to facilitate the expansion of the stirring rod 22 when the lifting plate 23 rises again.

[0033] Referring to Figure 3 : A traction rod 25 is arranged in the control groove 211 in the vertical direction, the lifting plate 23 is fixedly arranged on the traction rod 25, a traction sleeve 26 is arranged at the upper part of the shell 1, the traction rod 25 extends into the traction sleeve 26 and is in sliding fit with the traction sleeve 26, a first air pump 27 is arranged at the upper part of the traction sleeve 26, and the first air pump 27 is used to inject external air into the traction sleeve 26 or exhaust air in the traction sleeve 26.

[0034] When the measuring device is self-cleaning, the stirring rod 22 is not retracted, at this time the lifting plate 23 is at the highest position, and the clean water is injected into the shell 1 through the cleaning nozzle 15, which can clean the stirring rod 22, but due to the gravity of the soil, it is difficult to completely clean the soil at the bottom of the shell 1 even after multiple self-cleaning of the measuring device, and after multiple measurements, the soil at the bottom of the shell 1 will inevitably be silted, so manual cleaning is needed, at this time the first air pump 27 is started, the first air pump 27 exhausts the air in the traction sleeve 26, the traction rod 25 slides into the traction sleeve 26, so that the traction rod 25 can drive the lifting plate 23 to rise, and in the same way, when the first air pump 27 fills the traction sleeve 26 with external air, the traction rod 25 in the traction sleeve 26 gradually descends, so that the lifting plate 23 drives the stirring rod 22 to rotate through the connecting rod 24, and then the stirring rod 22 switches from the expanded state to the retracted state.

[0035] Referring to Figure 1 and Figure 3 : A driving unit 28 for driving the rotating shaft 21 to rotate is arranged at the upper part of the rotating shaft 21, the driving unit 28 includes a gear ring 281 fixedly arranged at the upper end of the rotating shaft 21 along the axis of the rotating shaft 21, a gear 282 engaged with one side of the gear ring 281, and a rotary driver 283 arranged at the upper end of the gear 282 and used to drive the gear 282 to rotate.

[0036] The rotary driver 283 is preferably a servo motor, which drives the gear ring 281 to rotate through the gear 282, and further drives the rotating shaft 21 fixedly connected with the gear ring 281 to rotate.

[0037] With reference to Figure 4 A sliding groove 221 is formed on the end of the stirring rod 22 away from the rotating shaft 21 along the extending direction of the stirring rod 22, an extension rod 223 is slidingly arranged in the sliding groove 221 along the extending direction of the sliding groove 221, a gap is formed between the extension rod 223 and the bottom of the sliding groove 221, and a spring 222 is arranged in the gap along the extending direction of the sliding groove 221, with the two ends of the spring 222 fixedly connected with the end of the extension rod 223 and the bottom of the sliding groove 221 respectively.

[0038] Thus, when the stirring rod 22 is stirring in the shell 1, the extension rod 223 arranged on the stirring rod 22 can extend out under the action of the centrifugal force, thereby improving the stirring effect.

[0039] With reference to Figure 4 and Figure 5 A plurality of air charging ports 16 are uniformly formed on the bottom of the shell 1, and a second air pump 17 is arranged on one side of the shell 1 and in communication with the air charging ports 16, and the second air pump 17 supplies air to the air charging ports 16.

[0040] No matter whether the measuring device is in the stirring state or the cleaning state, the second air pump 17 is in the running state, and thus the air charging ports 16 can blow air into the shell 1 along the vertical direction, so that the accumulated water in the shell 1 is stirred, and the amount of soil deposited on the bottom of the shell 1 is reduced.

[0041] Working principle: when the soil is stirred, the stirring rod 22 is in the unfolded state, and the extending direction of the stirring rod 22 is parallel to the radial direction of the rotating shaft 21; when the shell 1 is manually cleaned, the stirring rod 22 is in the folded state, and an acute angle is formed between the extending direction of the stirring rod 22 and the axis of the rotating shaft 21. When manually cleaning, the lifting disc 23 arranged in the control groove 211 is first lifted, and the stirring rod 22 arranged along the radial direction of the rotating shaft 21 is rotated to the folded state, so that the worker can clean the inside of the shell 1 without being hindered by the stirring rod 22, and the cleaning speed and effect are improved, and the extending direction of the folded stirring rod 22 and the axis of the rotating shaft 21 form an acute angle, so that when the lifting disc 23 is lifted again, the stirring rod 22 can be smoothly unfolded under the action of the connecting rod 24.

[0042] The above embodiment only expresses one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A rapid pH determination device for soil detection, comprising a shell (1) and a stirring unit (2) arranged in the shell (1); characterized in that The shell (1) is a cylindrical structure, a rotating shaft (21) is arranged in the shell (1) in the vertical direction, the axis of the rotating shaft (21) is collinear with the axis of the shell (1), the rotating shaft (21) rotates around its own axis when the stirring unit (2) is running, a plurality of stirring assemblies are arranged on the rotating shaft (21) in the vertical direction, each stirring assembly comprises a plurality of stirring rods (22), the stirring rods (22) are uniformly arranged around the axis of the rotating shaft (21), and the stirring rods (22) are hinged to the rotating shaft (21), a control groove (211) is formed in the interior of the rotating shaft (21) in the vertical direction, a plurality of lifting plates (23) are movably arranged in the control groove (211) in the vertical direction, the lifting plates (23) correspond to the stirring assemblies one by one, the lifting plates (23) have a highest position on their moving path, the height of the lifting plates (23) when located at the highest position is still lower than the height of the hinged part of the stirring rods (22) and the rotating shaft (21), a connecting rod (24) is arranged between the lifting plate (23) and the hinged rod, and the two ends of the connecting rod (24) are hinged to the end of the lifting plate (23) and the hinged rod respectively.

2. A device for rapid determination of pH for soil testing as claimed in claim 1 wherein, The stirring rods (22) have an expanded state and a contracted state, the stirring rods (22) are in the expanded state when stirring the soil, the extension direction of the stirring rods (22) is parallel to the radial direction of the rotating shaft (21), and the stirring rods (22) are in the contracted state when manually cleaning the shell (1), at this time, the extension direction of the stirring rods (22) has an included angle with the axis of the rotating shaft (21), and the included angle is an acute angle.

3. A device for rapid determination of pH for soil testing as claimed in claim 1 wherein, A traction rod (25) is movably arranged in the control groove (211) in the vertical direction, the lifting plate (23) is fixedly arranged on the traction rod (25), a traction sleeve (26) is arranged at the upper part of the shell (1), the traction rod (25) extends into the traction sleeve (26) and is in sliding fit with the traction sleeve (26), a first air pump (27) is arranged at the upper part of the traction sleeve (26), and the first air pump (27) is used for injecting external air into the traction sleeve (26) or discharging air in the traction sleeve (26).

4. A device for rapid determination of pH for soil testing as claimed in claim 1 wherein, A driving unit (28) for driving the rotating shaft (21) to rotate is arranged at the upper part of the rotating shaft (21), the driving unit (28) comprises a gear ring (281) fixedly arranged on the upper end of the rotating shaft (21) along the axis of the rotating shaft (21), a gear (282) is engaged on one side of the gear ring (281), and a rotary driver (283) for driving the gear (282) to rotate is arranged at the upper end of the gear (282).

5. A device for rapid determination of pH for soil testing as claimed in claim 1 wherein, A sliding groove (221) is formed on the end of the stirring rod (22) away from the rotating shaft (21) along the extension direction of the stirring rod (22), an extension rod (223) is slidably arranged in the sliding groove (221) along the extension direction of the sliding groove (221), a gap is formed between the extension rod (223) and the bottom of the sliding groove (221), a spring (222) is arranged in the gap along the extension direction of the sliding groove (221), and the two ends of the spring (222) are fixedly connected with the end of the extension rod (223) and the bottom of the sliding groove (221) respectively.

6. A device for rapid determination of pH for soil testing as claimed in claim 1 wherein, A plurality of inflation openings (16) are uniformly formed on the bottom of the shell (1), a second air pump (17) in communication with the inflation openings (16) is arranged on one side of the shell (1), and the second air pump (17) supplies air to the inflation openings (16).

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