CN210243556U

CN210243556U - Be convenient for install non-maintaining graphite electrode soil pH sensor

Info

Publication number: CN210243556U
Application number: CN201920982383.5U
Authority: CN
Inventors: Maowen Huang; 黄茂文; Zhihui Li; 李智惠; Yongjun Sun; 孙永俊; Li Zhang; 张丽; Zhongchen Dai; 戴忠辰
Original assignee: Sanqihe Traditional Chinese Medicine Industry Development Center Of Wenshan Zhuang And Miao Autonomous Prefecture
Current assignee: Sanqihe Traditional Chinese Medicine Industry Development Center Of Wenshan Zhuang And Miao Autonomous Prefecture
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-03
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a graphite electrode soil PH sensor convenient to install and exempt from maintenance, including the PH sensor body, the central point of PH sensor body one end puts the fixed electrode installation arm that is equipped with in the department, the both sides of electrode installation arm one end tip are fixed and are equipped with the electrode post, one pot head of electrode installation arm is equipped with detachable electrode helmet, the PH sensor body inlays and establishes in the inside of protecting crust, the electrode installation arm runs through the conch wall of protecting crust one end, the conch wall of protecting crust one end is connected with the bolt hole screw thread of PH sensor body one end both sides through the bolt that runs through, the utility model relates to a graphite electrode soil PH sensor convenient to install and exempt from maintenance, 1) small in size is compact, the agricultural of being convenient for is installed and; 2) the device can work in severe environment for a long time (years), and is completely maintenance-free; 3) the product is firm and reliable, and is not easy to damage due to farm work in the field; 4) the electrode column is made of easily available materials and has low cost.

Description

Be convenient for install non-maintaining graphite electrode soil pH sensor

Technical Field

The utility model relates to a PH sensor, in particular to be convenient for install non-maintaining graphite electrode soil PH sensor.

Background

Originally, the glass electrode sensor is used as a laboratory instrument to test the pH value of a solution, or is applied to a water treatment system, and is not suitable for on-line monitoring of soil, and the following reasons mainly exist: 1. the glass electrode is made of fragile materials and is easy to damage when being buried in soil; 2. the glass electrode needs to be cleaned and maintained by chemical reagents regularly, otherwise, the glass electrode fails and cannot be used, and the farmer does not have the operation skills; 3. the sensor is composed of a glass electrode and a signal processing and converting circuit 2, and is large in size and inconvenient to install and arrange in the field; in addition, the glass electrode sensor is expensive, is not beneficial to large-scale layout and use, and influences the popularization range of the agricultural Internet of things industry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be convenient for install non-maintaining graphite electrode soil PH sensor to the glass electrode sensor who proposes in solving above-mentioned background is damaged easily, and life is shorter, the problem of inconvenient installation.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a be convenient for install non-maintaining graphite electrode soil PH sensor, includes the PH sensor body, the fixed electrode installation arm that is equipped with of central point department of putting of PH sensor body one end, the fixed electrode post that is equipped with in both sides of electrode installation arm one end tip, an pot head of electrode installation arm is equipped with detachable electrode helmet, the PH sensor body inlays the inside of establishing at the protecting crust, the electrode installation arm runs through the conch wall of protecting crust one end, the conch wall of protecting crust one end through the bolt that runs through with the bolt hole threaded connection of PH sensor body one end both sides, the end fixing of protecting crust one end is equipped with the inserted bar that a plurality of equidistant arranged.

As an optimal technical scheme of the utility model, the shell of PH sensor body is the engineering plastics shell, the other end of PH sensor body is fixed and is equipped with output interface.

As a preferred technical scheme of the utility model, the electrode post includes negative pole post and anodal post, the negative pole post with the anodal post is made by graphite material, the negative pole post with the anodal post all with PH sensor body electric connection.

As an optimized technical scheme of the utility model, the electrode post with the inserted bar all inlays the inside of establishing at soil, the length of inserted bar is greater than the length of electrode post.

As a preferred technical scheme of the utility model, the bolt is close to a pot head of PH sensor body is equipped with detachable damping spring.

As an optimal technical scheme of the utility model, the protecting crust openly keeps away from the one end of inserted bar is equipped with the waterproof curtain of detachable, the protecting crust with the waterproof curtain is made by plastic materials.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a graphite electrode soil PH sensor convenient for installation and maintenance-free, which 1) has small and compact volume, and is convenient for the agricultural Internet of things to be installed and laid on the field;

2) the device can work in severe environment for a long time (years), and is completely maintenance-free;

3) the product is firm and reliable, and is not easy to damage due to farm work in the field;

4) the material of the electrode column is easy to obtain, and the cost is low; the components of the material are clear, so that continuous batch purchase is facilitated; the graphite material has stable molecular structure and is buried in soil for a long time without maintenance; the graphite material has high stability and good production consistency, and can greatly promote the popularization and application of the agricultural Internet of things;

5) the sensor is convenient to install and easy to maintain, and the service life of the sensor is prolonged.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic diagram of a side view of a PH sensor body according to the present invention;

FIG. 3 is a schematic view of the protective shell structure of the present invention;

fig. 4 is a schematic view of the measurement principle structure of the present invention.

In the figure: 1. a pH sensor body; 2. an electrode mounting arm; 3. an electrode column; 4. an electrode protective cap; 5. bolt holes; 6. a bolt; 7. a damping spring; 8. a protective shell; 9. inserting a rod; 10. a waterproof curtain; 11. an output interface; 12. a negative pole post; 13. a positive post; 14. and (3) soil.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-4, the utility model provides a graphite electrode soil PH sensor convenient to installation maintenance-free, including PH sensor body 1, the fixed electrode installation arm 2 that is equipped with of central point department of putting of PH sensor body 1 one end, the fixed electrode column 3 that is equipped with in both sides of 2 one end tip of electrode installation arm, a pot head of electrode installation arm 2 is equipped with detachable electrode helmet 4, PH sensor body 1 inlays the inside of establishing at protecting crust 8, electrode installation arm 2 runs through the conchal wall of protecting crust 8 one end, the conchal wall of protecting crust 8 one end is through the bolt hole 5 threaded connection of bolt 6 and the PH sensor body 1 one end both sides that run through, the end fixing of protecting crust 8 one end is equipped with a plurality of inserted bars 9 of equidistant arranging.

Preferably, the housing of the PH sensor body 1 is an engineering plastic housing, the other end of the PH sensor body 1 is fixedly provided with an output interface 11, the output interface 11 has two selectable interfaces, RS-485 and current type 4-20mA output can be realized, the two interfaces can both meet signal transmission in a long distance (tens of meters), and the engineering plastic housing can tolerate the environment of soil and meet the use requirement of the PH sensor body 1 in the environment under certain harsh conditions.

Preferably, the electrode post 3 comprises a negative post 12 and a positive post 13, the negative post 12 and the positive post 13 are both made of graphite material, the negative post 12 and the positive post 13 are both electrically connected to the PH sensor body 1, the PH sensor body 1 uses the negative post 12 and the positive post 13 made of graphite material, the primary battery is formed in the soil to be tested, the difference of the soil pH value can generate different electromotive forces between graphite electrodes, the pH value of the soil can be indirectly obtained by measuring the electromotive forces, the measuring principle is shown in figure 4, the primary battery formed by the negative pole column 12 and the positive pole column 13 and the soil medium has larger internal resistance (dozens of k ohms), if the voltage meter with high internal resistance is directly used for measuring, although the effect of high internal resistance can be mitigated, a resistance (in the order of hundreds of k ohms) needs to be connected in series between the two electrodes, since the loop current of the galvanic cell is very small, which is not good for the electrodes to react sufficiently with the soil medium.

Preferably, electrode column 3 and inserted bar 9 all inlay the inside of establishing at soil 14, and the length of inserted bar 9 is greater than electrode column 3's length, makes 8 installations of protecting crust more stable, further plays the guard action to PH sensor body 1.

Preferably, one end cover that bolt 6 is close to PH sensor body 1 is equipped with detachable damping spring 7, and after the shell wall smooth silk of bolt 6 and protective housing 8, damping spring 7 played the cushioning effect.

Preferably, the one end that inserted bar 9 was openly kept away from to protective housing 8 is equipped with the waterproof curtain 10 of detachable, and protective housing 8 and waterproof curtain 10 are made by plastic materials, and water-proof effects is good, prevents that rainwater or dew from drenching PH sensor body 1.

When in specific use, the maintenance-free graphite electrode soil PH sensor is convenient to install, firstly, the bolt 6 penetrates through the shell wall of the protective shell 8 and the damping spring 7 to be in threaded connection with the bolt hole 5 of the PH sensor body 1, secondly, installing a waterproof curtain 10, secondly digging a hole with the same depth as the total length of the electrode installation arm 2 and the electrode column 3 in the soil, finally placing the electrode installation arm 2 and the electrode column 3 in the hole and filling the soil, meanwhile, the inserted rod 9 is inserted into the soil 14 to achieve the effect of stabilizing the PH sensor body 1, and plays a role in protection, the PH sensor body 1 uses a negative pole column 12 and a positive pole column 13 which are made of graphite materials, and forming a galvanic cell in the soil to be tested, generating different electromotive forces between graphite electrodes due to the difference of the soil pH values, and measuring the electromotive forces to indirectly obtain the soil pH value.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A soil PH sensor convenient for installing a maintenance-free graphite electrode comprises a PH sensor body (1), it is characterized in that an electrode mounting arm (2) is fixedly arranged at the central position of one end of the PH sensor body (1), two sides of one end part of the electrode mounting arm (2) are fixedly provided with electrode columns (3), one end of the electrode mounting arm (2) is sleeved with a detachable electrode protective cap (4), the PH sensor body (1) is embedded in a protective shell (8), the electrode mounting arm (2) penetrates through the shell wall at one end of the protective shell (8), the shell wall at one end of the protective shell (8) is in threaded connection with bolt holes (5) at two sides of one end of the PH sensor body (1) through penetrating bolts (6), the end part of one end of the protective shell (8) is fixedly provided with a plurality of inserted rods (9) which are arranged at equal intervals.

2. A soil PH sensor facilitating the installation of maintenance-free graphite electrode as claimed in claim 1, wherein: the PH sensor comprises a PH sensor body (1), wherein a shell of the PH sensor body (1) is an engineering plastic shell, and an output interface (11) is fixedly arranged at the other end of the PH sensor body (1).

3. A soil PH sensor facilitating the installation of maintenance-free graphite electrode as claimed in claim 1, wherein: the electrode column (3) comprises a negative pole column (12) and a positive pole column (13), the negative pole column (12) and the positive pole column (13) are made of graphite materials, and the negative pole column (12) and the positive pole column (13) are electrically connected with the PH sensor body (1).

4. A soil PH sensor facilitating the installation of maintenance-free graphite electrode as claimed in claim 1, wherein: the electrode column (3) and the inserted bar (9) are embedded in soil (14), and the length of the inserted bar (9) is greater than that of the electrode column (3).

5. A soil PH sensor facilitating the installation of maintenance-free graphite electrode as claimed in claim 1, wherein: one end of the bolt (6) close to the PH sensor body (1) is sleeved with a detachable damping spring (7).

6. A soil PH sensor facilitating the installation of maintenance-free graphite electrode as claimed in claim 1, wherein: the front side of the protective shell (8) is far away from one end of the inserted rod (9) and is provided with a detachable waterproof curtain (10), and the protective shell (8) and the waterproof curtain (10) are made of plastic materials.