A moisture measuring device for detecting the moisture content of emulsifiable concentrate

Abstract

The present invention relates to the technical field of detecting the moisture content of emulsifiable concentrate, and in particular to a moisture measuring device for detecting the moisture content of emulsifiable concentrate, comprising a measuring instrument main body and an electrolytic cell arranged on the measuring instrument main body, wherein the electrolytic cell comprises a cell body, a cell cover, an electrolytic electrode, a detection electrode, an injection port and a drying tube, wherein the cell cover covers the cell port at the top of the cell body, and the electrolytic electrode, the detection electrode and the drying tube are all arranged on the cell cover. The present invention abandons the wear problem during the stirring process of the traditional magnetic stirrer, avoids the generation of a large amount of impurities in the liquid inside the electrolytic cell, improves the accuracy of the measurement results, prolongs the service life of the detection electrode, and prolongs the replacement cycle of the liquid inside the electrolytic cell, reduces the cost, and in addition, during the entire stirring process, there will be no situation where an object with a certain magnetism located inside the electrolytic cell hits the electrolytic cell due to excessive centrifugal force, thereby improving the safety during the measurement of the moisture content of emulsifiable concentrate.

Description

Technical Field

[0001] The invention relates to the technical field of emulsifiable concentrate moisture content detection, in particular to a moisture measuring device for detecting the moisture content of emulsifiable concentrate. Background Art

[0002] EC is a homogeneous transparent oily liquid made by dissolving the pesticide original drug (crude oil or original powder) in an organic solvent (such as petroleum solvents such as xylene and methylnaphthalene, or alcohol solvents such as methyl isobutyl ketone and isopropanol) in a certain proportion, and then adding a certain amount of pesticide-specific emulsifier. This liquid can form a stable emulsion for spraying after adding water.

[0003] The detection of water content in EC plays an important role and significance in the production, quality control and use effect of pesticide formulations. The water content in EC will directly affect its stability; too high water content may cause stratification, precipitation or crystallization of EC during storage, thus affecting its use effect. The water content will also affect the efficacy of EC; the right amount of water helps EC to form a stable emulsion when spraying, so that the liquid medicine can better adhere to the surface of crops and pests and weeds. However, too high water content may cause excessive dilution of the liquid medicine, reduce the concentration of active ingredients, and thus affect the control effect. Therefore, it is particularly important to detect the water content of EC.

[0004] At present, the detection of water content in emulsifiable concentrate is usually achieved by using a trace moisture meter, which is also called a Karl Fischer moisture meter. Its principle is that in the presence of methanol and alkali (such as pyridine), water will react chemically with iodine and sulfur dioxide. This reaction is a reversible reaction, but the reaction can be promoted in the positive direction by adding appropriate alkaline substances, thereby determining the water content.

[0005] The trace moisture meter consists of two parts: the meter body and the electrolytic cell. During the test, the sample is injected into the electrolytic cell to automatically measure the water content of the emulsion. The current electrolytic cell uses a magnetic stirrer to achieve stirring and mixing. The problem with this method is that an object with a certain magnetism needs to be placed in the electrolytic cell to achieve the stirring function. The stirring process mainly relies on the rotation of the object with a certain magnetism, and wear impurities will appear during the rotation. The impurities will not only affect the accuracy of the measurement results, but may also cause damage to the detection electrode. At the same time, if there are too many impurities, the liquid in the electrolytic cell needs to be replaced, resulting in high measurement costs. Summary of the invention

[0006] The object of the present invention is to provide a moisture measuring device for detecting the moisture content of emulsifiable concentrate to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A moisture measuring device for detecting the moisture content of emulsifiable concentrate, comprising a measuring instrument body and an electrolytic cell arranged on the measuring instrument body, wherein the electrolytic cell comprises a cell body, a cell cover, an electrolytic electrode, a detection electrode, an injection port and a drying tube, wherein the cell cover covers the cell port at the top of the cell body, the electrolytic electrode, the detection electrode and the drying tube are all arranged on the cell cover, and the injection port is also arranged on the cell cover;

[0009] A fixing sheet is provided between the bottom of the inner peripheral surface and the inner bottom surface of the pool body;

[0010] The bottom of the pool body is rotatably connected to the measuring instrument body through a base, and the base includes a seat plate sleeved and fixed to the bottom of the pool body and a driving motor for driving the seat plate to rotate, wherein the driving motor is fixedly installed inside the measuring instrument body, and the bottom of the seat plate is rotatably connected to the measuring instrument body through a bearing;

[0011] The pool cover is connected to the measuring instrument body in a vertically liftable manner through a lifting mechanism;

[0012] The top of the pool body is sealed with the pool cover via a rotary sealing mechanism, wherein the rotary sealing mechanism comprises a moving ring and a fixed ring, wherein the moving ring is coaxially fixed to the top of the pool body, and the fixed ring is coaxially fixed to the pool cover.

[0013] Preferably, the base further comprises a driven gear and a driving gear meshing with each other, wherein the driven gear is sleeved and fixed on the seat plate, and the driving gear is fixedly connected to the output shaft of the driving motor.

[0014] Preferably, a rubber sleeve is provided between the inner surface of the seat plate and the outer peripheral wall of the pool body.

[0015] Preferably, the detection electrode comprises an electrode body and an electrode plug-in tube integrally provided with the pool cover, and the bottom end of the electrode plug-in tube extends below the liquid level in the pool body.

[0016] Preferably, the injection port comprises an internally threaded tube fixedly connected to the pool cover, an externally threaded tube threadedly connected to the inside of the internally threaded tube, and a silicone pad;

[0017] The silicone pad is arranged between the bottom end of the external threaded tube and the bottom wall of the internal threaded tube;

[0018] A through hole is opened at the center of the bottom wall, and the through hole passes through the bottom wall.

[0019] Preferably, the lifting mechanism comprises an electric cylinder and a connecting rod;

[0020] The electric cylinder is fixedly mounted on the measuring instrument body, and the output shaft of the electric cylinder is arranged to be telescopically arranged vertically;

[0021] One end of the connecting rod is fixedly mounted on the top end of the output shaft of the electric cylinder, and the other end of the connecting rod is fixedly connected to the pool cover.

[0022] Preferably, the lifting mechanism further includes a fixing ring;

[0023] The fixing ring is sleeved and fixed on the outer periphery of the pool cover, and the other end of the connecting rod is fixedly connected to the fixing ring.

[0024] Preferably, the dynamic ring comprises a bottom ring and at least two bottom annular spacers;

[0025] The bottom annular spacer is coaxially arranged with the bottom ring, and the bottom end of the bottom annular spacer is fixed to the upper surface of the bottom ring;

[0026] An oil groove for storing sealing oil is formed between two adjacent bottom annular spacers;

[0027] The bottom ring is sleeved and fixed on the outer peripheral wall of the pool body;

[0028] The fixed ring includes a top ring and at least one top annular spacer;

[0029] The top ring is fixedly connected to the pool cover;

[0030] The top end of the top annular spacer is fixedly connected to the top ring;

[0031] The top annular spacer is at least partially inserted into the oil groove, and the bottom end of the top annular spacer is immersed in the sealing oil.

[0032] Preferably, a material exchange pipeline is provided at the bottom of the tank body;

[0033] The material exchange pipeline includes a leakage pipe integrally formed and arranged at the bottom of the tank body, and an inlet pipe and an outlet pipe connected to the leakage pipe through a rotary joint, and valves are installed on the pipe sections of the inlet pipe and the outlet pipe.

[0034] Preferably, at least two inclined plates are fixed inside the leakage pipe, so that a Z-shaped channel is formed inside the leakage pipe.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention eliminates the wear problem of the traditional magnetic stirrer during the stirring process, avoids the generation of a large amount of impurities in the liquid inside the electrolytic cell, improves the accuracy of the measurement result, prolongs the service life of the detection electrode, prolongs the replacement cycle of the liquid inside the electrolytic cell, reduces the cost, and in addition, during the entire stirring process, there will be no situation where an object with a certain magnetism inside the electrolytic cell hits the electrolytic cell due to excessive centrifugal force, thereby improving the safety of the emulsifiable concentrate water content measurement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the structure of the material replacement pipeline of the present invention;

[0040] Figure 4 It is a schematic cross-sectional view of the electrolytic cell of the present invention;

[0041] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0042] Figure 6 It is a cross-sectional three-dimensional structural schematic diagram of the rotary sealing mechanism of the present invention;

[0043] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0044] Figure 8 It is a schematic diagram of the cross-sectional structure of the injection port of the present invention.

[0045] In the figure:

[0046] 1. The measuring instrument body;

[0047] 2. electrolytic cell; 21. cell body; 211. fixing plate; 22. cell cover; 23. electrolytic electrode; 24. detection electrode; 241. electrode plug-in tube; 25. injection port; 251. internal threaded tube; 252. external threaded tube; 253. silicone pad; 254. bottom wall; 255. through hole; 26. drying tube;

[0048] 3. Base; 31. Seat plate; 32. Rubber sleeve; 33. Driven gear; 34. Driving motor; 35. Driving gear;

[0049] 4. Lifting mechanism; 41. Electric cylinder; 42. Connecting rod; 43. Fixing ring;

[0050] 5. Rotary sealing mechanism; 51. Moving ring; 511. Bottom ring; 512. Bottom annular spacer; 513. Oil groove; 52. Fixed ring; 521. Top ring; 522. Top annular spacer; 523. Storage groove;

[0051] 6. Material exchange pipeline; 61. Rotary joint; 62. Inlet pipe; 63. Outlet pipe; 64. Leakage pipe; 65. Inclined plate. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] See also Figure 1-Figure 8 , the present invention provides a technical solution:

[0054] A moisture measuring device for detecting the moisture content of emulsifiable concentrate comprises a measuring instrument body 1 and an electrolytic cell 2 arranged on the measuring instrument body 1, wherein the electrolytic cell 2 comprises a cell body 21, a cell cover 22, an electrolytic electrode 23, a detection electrode 24, an injection port 25 and a drying tube 26, wherein the cell cover 22 covers the cell port at the top of the cell body 21, and the electrolytic electrode 23, the detection electrode 24 and the drying tube 26 are all arranged on the cell cover 22. The above-mentioned are all prior arts and will not be further elaborated here.

[0055] Different from the prior art, the sample injection port 25 in the present invention is also arranged on the pool cover 22; the sample injection port 25 is used for injecting emulsifiable concentrate samples; a fixing plate 211 is arranged between the bottom of the inner circumferential surface and the inner bottom surface of the pool body 21, and the fixing plate 211 is used to drive the liquid inside the pool body 21 to rotate with the pool body 21 when the pool body 21 rotates; further, since the pool body 21 in the present invention will rotate during use, and the pool cover 22 remains stationary, the sample injection port 25 originally arranged on the side wall of the pool body 21 is arranged on the pool cover 22 to prevent the sample injection port 25 from colliding with the measuring instrument body 1 or the operator during the rotation of the pool body 21, thereby preventing the sample injection port 25 from being damaged and ensuring the safety of the emulsifiable concentrate water content determination process. The injection port 25 in this embodiment is basically the same as the prior art. Specifically, the injection port 25 includes an internal threaded tube 251 fixedly connected to the pool cover 22, an external threaded tube 252 threadedly connected to the internal threaded tube 251, and a silicone pad 253; the silicone pad 253 is arranged between the bottom end of the external threaded tube 252 and the bottom wall 254 of the internal threaded tube 251; a through hole 255 is opened at the center of the bottom wall 254, and the through hole 255 passes through the bottom wall 254; when actually injecting the emulsifiable concentrate sample, the pillow of the sample-specific syringe is directly passed through the silicone pad 253 and the through hole 255 and inserted below the liquid level inside the pool body 21, and then the emulsifiable concentrate sample is injected.

[0056] The detection electrode 24 in this embodiment includes an electrode body and an electrode plug-in tube 241 integrally provided with the pool cover 22 . The bottom end of the electrode plug-in tube 241 extends below the liquid level in the pool body 21 .

[0057] The bottom of the pool body 21 is rotatably connected to the measuring instrument body 1 through the base 3, so that the pool body 21 can rotate on the measuring instrument body 1. Specifically, the base 3 includes a seat plate 31 sleeved and fixed on the bottom of the pool body 21 and a drive motor 34 for driving the seat plate 31 to rotate. The drive motor 34 can be an electric or pneumatic motor, depending on the actual situation. Among them, the drive motor 34 is fixedly installed inside the measuring instrument body 1, and the bottom of the seat plate 31 is rotatably connected to the measuring instrument body 1 through a bearing. The presence of the bearing can improve the stability of the seat plate 31 and the pool body 21 during the rotation process. Further, the base 3 also includes a driven gear 33 and a driving gear 35 that are meshed and arranged. The driven gear 33 and the driving gear 35 can be made of metal or non-metallic materials, which are not specifically limited here. Among them, the driven gear 33 is sleeved and fixed on the seat plate 31, and the specific fixing method between the seat plate 31 and the driven gear 33 is also not specifically limited. For example, it can be an integrally formed setting, and the driving gear 35 is fixedly connected to the output shaft of the drive motor 34. In order to reduce the vibration between the seat plate 31 and the pool body 21 during the rotation process, a rubber sleeve 32 is provided between the inner surface of the seat plate 31 and the outer peripheral wall of the pool body 21 .

[0058] The pool cover 22 is connected to the measuring instrument body 1 and can be vertically lifted and lowered through a lifting mechanism 4; specifically, the lifting mechanism 4 includes an electric cylinder 41, a connecting rod 42 and a fixing ring 43; the electric cylinder 41 is fixedly mounted on the measuring instrument body 1 (for example, fixed installation can be achieved by bolts), and the output shaft of the electric cylinder 41 is vertically telescopically arranged, that is, the output shaft of the electric cylinder 41 is telescopic (lifted and retracted) in the vertical direction; one end of the connecting rod 42 is fixedly mounted on the top end of the output shaft of the electric cylinder 41, and the other end of the connecting rod 42 is fixedly connected to the pool cover 22, the fixing ring 43 is sleeved and fixed on the outer periphery of the pool cover 22, and the other end of the connecting rod 42 is fixedly connected to the fixing ring 43.

[0059] In actual use, by controlling the output shaft of the electric cylinder 41 to extend, the pool cover 22 can be driven to gradually rise, and conversely, by controlling the output shaft of the electric cylinder 41 to retract, the pool cover 22 can be driven to gradually descend.

[0060] The top of the pool body 21 is sealed to the pool cover 22 via a rotary sealing mechanism 5 . The rotary sealing mechanism 5 includes a dynamic ring 51 and a fixed ring 52 . The dynamic ring 51 is coaxially fixed to the top of the pool body 21 , and the fixed ring 52 is coaxially fixed to the pool cover 22 .

[0061] When the above technical scheme is in use, the determination method of the water content of emulsifiable concentrate by the measuring instrument body 1 and the electrolytic cell 2 is consistent with the determination method in the prior art. The only difference is that the injection port 25 in this embodiment is arranged on the cell cover 22, so the injection position is changed; the difference is that the stirring method of the liquid inside the electrolytic cell 2 is changed in this embodiment. Specifically, no magnetic stirrer is provided in this embodiment, so the liquid inside the electrolytic cell 2 cannot be stirred by the magnetic stirrer. Instead, the liquid inside the electrolytic cell 2 is stirred by rotating the cell body 21 while the cell cover 22 does not rotate; specifically, when it is necessary to stir the liquid inside the electrolytic cell 2, the drive motor 34 is started to drive the driving gear 35 to rotate. Since the driving gear 35 and the The driven gear 33 is meshed, so it can drive the driven gear 33 to rotate. Since the driven gear 33 is fixedly connected to the base plate 31, and the base plate 31 is fixedly connected to the cell body 21 and is rotatably connected to the measuring instrument main body 1 through a bearing, the rotation of the driven gear 33 will directly drive the cell body 21 to start rotating. At this time, since the cell cover 22 will not rotate and the height position of the cell cover 22 remains unchanged, the electrolytic electrode 23 and the detection electrode 24 extending below the liquid level in the electrolytic cell 2 will remain stationary, and the liquid in the electrolytic cell 2 will rotate with the cell body 21 under the action of friction and the fixed plate 211. At this time, the electrolytic electrode 23 and the detection electrode 24 that remain stationary can play a stirring role on the liquid in the electrolytic cell 2. The advantages of such a setting are: abandoning the wear problem of the traditional magnetic stirrer during the stirring process, avoiding the generation of a large amount of impurities in the liquid inside the electrolytic cell 2, improving the accuracy of the measurement results, extending the service life of the detection electrode, and extending the replacement cycle of the liquid inside the electrolytic cell 2, reducing costs, and during the entire stirring process, there will be no situation where objects with a certain degree of magnetism located inside the electrolytic cell 2 collide with the electrolytic cell 2 due to excessive centrifugal force, thereby improving the safety of the emulsifiable oil water content measurement process.

[0062] The specific structure and sealing principle of the dynamic ring 51 and the fixed ring 52 are introduced below.

[0063] like Figure 4 , Figure 6 and Figure 7As shown, the dynamic ring 51 includes a bottom ring 511 and at least two bottom annular spacers 512. It can be seen from the figure that three bottom annular spacers 512 are provided in this embodiment; specifically, the bottom annular spacer 512 is coaxially arranged with the bottom ring 511, and the bottom end of the bottom annular spacer 512 is fixed to the upper surface of the bottom ring 511, and the specific fixing method between the bottom annular spacer 512 and the bottom ring 511 can be integrally formed; further, an oil groove 513 for storing sealing oil is formed between two adjacent bottom annular spacers 512; the inner diameter of the innermost bottom annular spacer 512 among the three bottom annular spacers 512 is equal to the inner diameter of the bottom ring 511, and the bottom ring 511 is sleeved and fixed on the outer peripheral wall of the pool body 21.

[0064] like Figure 4 , Figure 6 and Figure 7 As shown, the fixed ring 52 includes a top ring 521 and at least one top annular spacer 522. Since two oil grooves 513 are formed on the moving ring 51, two top annular spacers 522 are provided in this embodiment, which are used to be inserted into the two oil grooves 513 respectively, and a receiving groove 523 is formed between the two top annular spacers 522; the top ring 521 is fixedly connected to the pool cover 22, for example, it can be fixed by gluing; the top end of the top annular spacer 522 is fixedly connected to the top ring 521, and the fixed connection between the top ring 521 and the top annular spacer 522 is also integrally formed; the top annular spacer 522 is at least partially inserted into the inside of the oil groove 513, and the bottom end of the top annular spacer 522 is immersed in the sealing oil.

[0065] Since the pool cover 22 in this embodiment is driven by the electric cylinder 41 to perform vertical lifting and lowering, in order to cooperate with the vertical lifting and lowering of the pool cover 22, the structures of the moving ring 51 and the fixed ring 52 in this embodiment are as described above. The advantage of such a configuration is that when the fixed ring 52 falls to a suitable height together with the pool cover 22, that is, when the bottom end of the top annular spacer 522 is immersed in the sealing oil, a rotary sealing connection is achieved between the moving ring 51 and the fixed ring 52, that is, a rotary sealing connection is achieved between the pool body 21 and the pool cover 22, which facilitates the opening and closing of the pool cover 22; at the same time, another advantage of adopting this structure is that the cooperation between the moving ring 51 and the fixed ring 52 can limit the position of the top of the pool body 21 during the rotation of the pool body 21, so that the top of the pool body 21 rotates around the same axis, and then cooperates with the bearing at the bottom of the pool body 21, so that the pool body 21 can stably rotate around a vertically set axis.

[0066] In this embodiment, a material replacement pipeline 6 is provided at the bottom of the pool body 21; the material replacement pipeline 6 includes a leakage pipe 64 integrally formed and arranged at the bottom of the pool body 21, and an inlet pipe 62 and an outlet pipe 63 connected to the leakage pipe 64 through a rotating joint 61. The axis of the leakage pipe 64 coincides with the axis of the pool body 21. Valves are installed on the pipe sections of the inlet pipe 62 and the outlet pipe 63. The valves are used to control the on-off of the inlet pipe 62 and the outlet pipe 63. When it is necessary to replace the liquid inside the pool body 21, the valve on the outlet pipe 63 is opened, and the valve on the inlet pipe 62 is closed, and the pool body can be pumped out using a suitable pump body. The liquid inside the body 21 is then closed, and the valve on the outlet pipe 63 is opened, and the valve on the inlet pipe 62 can be used to pump new liquid into the interior of the pool body 21 using a suitable pump body, thereby facilitating the replacement of the liquid inside the pool body 21; further, at least two inclined plates 65 are fixed inside the leakage pipe 64 to form a Z-shaped channel inside the leakage pipe 64, and the inclined plates 65 are used to block impurities deposited at the bottom of the leakage pipe 64 and the liquid inside the pool body 21, so that the impurities deposited at the bottom of the leakage pipe 64 during the rotation of the pool body 21 will not enter the interior of the pool body 21.

[0067] In the above scheme, since the traditional magnetic agitator is abandoned in this embodiment, the middle position at the bottom of the pool body 21 is left vacant, providing a spatial basis for the setting of the material replacement pipeline 6. That is, abandoning the traditional magnetic agitator also directly provides convenience for replacing the liquid inside the pool body 21.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A moisture measuring device for detecting the moisture content of emulsifiable concentrate, comprising a measuring instrument body and an electrolytic cell arranged on the measuring instrument body, wherein the electrolytic cell comprises a cell body, a cell cover, an electrolytic electrode, a detection electrode, an injection port and a drying tube, wherein: The cell cover is closed at the cell opening on the top of the cell body, and the electrolysis electrode, the detection electrode and the drying tube are all arranged on the cell cover, characterized in that the sample inlet is also arranged on the cell cover; A fixing sheet is provided between the bottom of the inner peripheral surface and the inner bottom surface of the pool body; The bottom of the pool body is rotatably connected to the measuring instrument body through a base, and the base includes a seat plate sleeved and fixed to the bottom of the pool body and a driving motor for driving the seat plate to rotate, wherein the driving motor is fixedly installed inside the measuring instrument body, and the bottom of the seat plate is rotatably connected to the measuring instrument body through a bearing; The pool cover is connected to the measuring instrument body in a vertically liftable manner through a lifting mechanism; The top of the pool body and the pool cover are sealed by a rotary sealing mechanism, wherein the rotary sealing mechanism comprises a moving ring and a fixed ring, wherein the moving ring is coaxially fixed to the top of the pool body, and the fixed ring is coaxially fixed to the pool cover; The base also includes a driven gear and a driving gear meshing with each other, wherein the driven gear is sleeved and fixed on the base plate, and the driving gear is fixedly connected to the output shaft of the driving motor; The dynamic ring includes a bottom ring and at least two bottom annular spacers; The bottom annular spacer is coaxially arranged with the bottom ring, and the bottom end of the bottom annular spacer is fixed to the upper surface of the bottom ring; An oil groove for storing sealing oil is formed between two adjacent bottom annular spacers; The bottom ring is sleeved and fixed on the outer peripheral wall of the pool body; The fixed ring includes a top ring and at least one top annular spacer; The top ring is fixedly connected to the pool cover; The top end of the top annular spacer is fixedly connected to the top ring; The top annular spacer is at least partially inserted into the oil groove, and the bottom end of the top annular spacer is immersed in the sealing oil.

2. The moisture measuring device according to claim 1, characterized in that: A rubber sleeve is arranged between the inner surface of the seat plate and the outer peripheral wall of the pool body.

3. The moisture measuring device according to claim 1, characterized in that: The detection electrode comprises an electrode body and an electrode plug-in tube integrally arranged with the pool cover, and the bottom end of the electrode plug-in tube extends below the liquid level in the pool body.

4. The moisture measuring device according to claim 1, characterized in that: The injection port comprises an internal threaded tube fixedly connected to the pool cover, an external threaded tube threadedly connected to the inside of the internal threaded tube, and a silicone pad; The silicone pad is arranged between the bottom end of the external threaded tube and the bottom wall of the internal threaded tube; A through hole is opened at the center of the bottom wall, and the through hole passes through the bottom wall.

5. The moisture measuring device according to claim 1, characterized in that: The lifting mechanism comprises an electric cylinder and a connecting rod; The electric cylinder is fixedly mounted on the measuring instrument body, and the output shaft of the electric cylinder is arranged to be telescopically arranged vertically; One end of the connecting rod is fixedly mounted on the top end of the output shaft of the electric cylinder, and the other end of the connecting rod is fixedly connected to the pool cover.

6. The moisture measuring device according to claim 5, characterized in that: The lifting mechanism also includes a fixing ring; The fixing ring is sleeved and fixed on the outer periphery of the pool cover, and the other end of the connecting rod is fixedly connected to the fixing ring.

7. The moisture measuring device according to claim 1, characterized in that: A material exchange pipeline is provided at the bottom of the tank body; The material exchange pipeline includes a leakage pipe integrally formed and arranged at the bottom of the tank body, and an inlet pipe and an outlet pipe connected to the leakage pipe through a rotary joint, and valves are installed on the pipe sections of the inlet pipe and the outlet pipe.

8. The moisture measuring device according to claim 7, characterized in that: At least two inclined sheets are fixed inside the leakage pipe, so that a Z-shaped channel is formed inside the leakage pipe.

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