CN112444612B - Portable chloride ion content detector - Google Patents
Portable chloride ion content detector Download PDFInfo
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- CN112444612B CN112444612B CN202011210016.7A CN202011210016A CN112444612B CN 112444612 B CN112444612 B CN 112444612B CN 202011210016 A CN202011210016 A CN 202011210016A CN 112444612 B CN112444612 B CN 112444612B
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Abstract
The invention discloses a portable chloride ion content detector which comprises a detection box, a supporting pipe and a controller, wherein the upper end of the supporting pipe is connected with the detection box, a sliding part and a water supply device are arranged in the detection box, a measuring cup is arranged on the sliding part, the water outlet end of the water supply device is communicated with the measuring cup, a detector for detecting chloride ion content is arranged in the detection box, a sample measuring end of the detector is positioned in the measuring cup, a first driving part is arranged outside the supporting pipe and drives the sliding part to move along the length direction of the supporting pipe, a avoidance hole is formed in the bottom of the detection box, the sliding part can penetrate through the avoidance hole and is positioned in the detection box, and the controller is respectively connected with the sliding part, the water supply device, the detector and the first driving part. The portable chloride ion content detector is convenient to use and carry and high in detection efficiency.
Description
Technical Field
The invention relates to the technical field of sandstone chloride ion detection, in particular to a portable chloride ion content detector.
Background
With the development of urbanization, the amount of the fresh river sand of the fresh water placer is not sufficient, the sea sand resources of China are rich, and the shortage of the building sand resources can be relieved, but because a large amount of chloride ions exist in the sea sand, concrete or mortar made of the sea sand is directly used in the building engineering, if the chloride ions reach a certain content, reinforcing steel bar corrosion is caused, the concrete structure is disabled, the engineering durability is reduced, and great potential safety hazards exist in the engineering quality, so the sea sand adopted in the building engineering has to detect the content of the chloride ions to judge whether the content of the chloride ions reaches the corresponding standard, if the content of the chloride ions does not meet the standard, the sea sand is used as the building sand after being washed, the detection of the content of the chloride ions in the sea sand in the prior art needs to transport the test mechanism or the laboratory for detection, and the process of the method is complicated, need rely on the manpower to get sand dress sand, wash the measuring tool, need consume more manpower when the measuring volume is big, inefficiency.
Disclosure of Invention
The embodiment of the invention aims to: the portable chloride ion content detector is convenient to use, carry and high in detection efficiency.
To achieve the purpose, the embodiment of the invention adopts the following technical scheme:
the utility model provides a portable chloride ion content detector, including detection case, stay tube and controller, the stay tube upper end with the detection case is connected, be provided with slider and water supply installation in the detection case, install the measuring cup on the slider, water supply installation's play water end with measuring cup intercommunication, be provided with the detector that detects chloride ion content in the detection case, the appearance end that surveys of detector is located in the measuring cup, install first driving piece outside the stay tube, first driving piece drive the slider is followed the length direction of stay tube removes, the hole of dodging has been seted up to the bottom of detection case, the slider can pass the hole of dodging is located in the detection case, the controller respectively with the slider water supply installation the detector with first driving piece is connected.
As a preferable scheme of the portable chloride ion content detector, the sliding member includes a base, a rotating seat and a second driving member, the base is connected to the first driving member, the first driving member drives the base to move along the length direction of the supporting tube, one end of the rotating seat is hinged to the base, the other end of the rotating seat is connected to the second driving member, the second driving member can drive the rotating seat to rotate along the hinge axis, the measuring cup is fixed on one side of the rotating seat away from the base, the rotating seat has a first position and a second position, when the rotating seat is located at the first position, the opening of the measuring cup faces right above, when the rotating seat rotates from the first position to the second position, the opening of the measuring cup faces downward, and the second driving member is connected to the controller.
As a preferred scheme of the portable chloride ion content detector, one side of the base, which is close to the supporting tube, is concavely provided with a sliding groove, and the supporting tube is convexly provided with a sliding rail matched with the sliding groove.
As a preferable scheme of the portable chloride ion content detector, a mounting groove is concavely arranged on one side, close to the measuring cup, of the rotating seat, a rubber ring is arranged on the inner wall of the mounting groove, and when the measuring cup is partially located in the mounting groove, the rubber ring is tightly abutted between the measuring cup and the mounting groove.
As a preferable scheme of the portable chloride ion content detector, a sand suction device is installed in the supporting pipe, a sand outlet of the sand suction device is positioned above a cup opening of the measuring cup, and the controller is connected with the sand suction device.
As a preferred scheme of the portable chloride ion content detector, the sand suction device comprises a sand suction fan, two ends of the sand suction fan are respectively connected with a sand inlet pipe and a sand outlet pipe, an outlet of the sand outlet pipe is communicated with the measuring cup, and the sand suction fan is connected with the controller.
As a preferred scheme of the portable chloride ion content detector, the water supply device comprises a water storage tank and a water faucet, a water pump is arranged in the water storage tank, the water pump is communicated with the water faucet through a hose, a water outlet of the water faucet is positioned above the measuring cup, and the water pump is connected with the controller.
As a preferred scheme of the portable chloride ion content detector, an opening is formed in one side, away from the supporting tube, of the detection box, and an upper cover used for plugging the opening is detachably connected to the detection box.
As a preferred scheme of the portable chloride ion content detector, the upper cover is provided with a limiting hole, a sample measuring end of the detector penetrates through the limiting hole to enter the measuring cup, the other end of the detector is connected with a limiting plate, and the size of the limiting plate is larger than that of the limiting hole.
As a preferred scheme of the portable chloride ion content detector, a display screen is arranged on the outer side wall of the detection box and connected with the controller, and the display screen is used for displaying the detection result processed by the controller.
The embodiment of the invention has the following beneficial effects: the portable chloride ion content detector can be applied to detection of chloride ion content in sea sand, the measuring cup and the water supply device are arranged in the detection box and connected with the detector, the detection process is controlled through the controller, automatic testing is realized, a sample to be detected does not need to be transported back to a testing mechanism or a laboratory, direct field detection can be realized, the measuring cup can slide out of the detection box along with the sliding part after detection is finished through the arrangement of the avoidance hole and the sliding part, the detected sample is convenient to clean in time, the water supply device supplies water to clean the measuring cup, manual water adding is not needed, the testing efficiency is greatly improved, the size is small, and the carrying is convenient.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a sectional view of a portable chlorine ion content detector according to an embodiment of the present invention.
Fig. 2 is an assembly schematic diagram of the first rotary joint, the water storage tank and the first motor in fig. 1.
Fig. 3 is a schematic bottom view of fig. 2 (water storage tank not shown).
FIG. 4 is a schematic view of the assembly of the base and the supporting tube according to another embodiment of the present invention.
Fig. 5 is a top view of fig. 4.
In the figure: 1. a detection box; 11. avoiding holes; 12. an upper cover; 13. a handle; 2. supporting a tube; 21. a sand suction fan; 22. a sand inlet pipe; 23. a sand outlet pipe; 24. a slide rail; 3. a water supply device; 31. a water storage tank; 311. a first limit post; 32. a faucet; 33. a water pump; 34. a hose; 4. a slider; 41. a base; 42. a rotating base; 421. a rubber ring; 43. a second driving member; 5. a measuring cup; 6. a detector; 7. a first driving member; 8. a first rotary joint; 81. a first mounting hole; 82. a first arc-shaped limiting hole; 83. a second gear; 9. a first motor; 91. a first gear.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 3, the portable chloride ion content detector of the embodiment of the present invention includes a detection box 1, a support tube 2 and a controller (not shown in the figures), the upper end of the support tube 2 is connected to the detection box 1, a sliding member 4 and a water supply device 3 are disposed in the detection box 1, a measuring cup 5 is mounted on the sliding member 4, a water outlet end of the water supply device 3 is communicated with the measuring cup 5, a detector 6 for detecting chloride ion content is disposed in the detection box 1, a sample measuring end of the detector 6 is located in the measuring cup 5, a first driving member 7 is mounted outside the support tube 2, the first driving member 7 drives the sliding member 4 to move along the length direction of the support tube 2, a avoiding hole 11 is disposed at the bottom of the detection box 1, the sliding member 4 can pass through the avoiding hole 11 and is located in the detection box 1, and the controller is respectively connected to the sliding member 4, the water supply device 3, the detector 6 and the first driving member 7 are connected. Through set up measuring cup 5 and water supply installation 3 in detection case 1, and connect detector 6, through controller control testing process, automatic testing, need not to transport the sample that awaits measuring back to accredited testing organization or laboratory, can direct on-the-spot detection, avoid hole 11 and slider 4 through the setting, after detecting the completion, measuring cup 5 can be along with slider 4 roll-off detection case 1 outside, the sample that has just detected in time clears up, water supply installation 3 supplies water and washs measuring cup 5, need not manual adding water, greatly improved efficiency of software testing, and small, and is convenient to carry.
Preferably, the sliding member 4 includes a base 41, a rotating seat 42 and a second driving member 43, the base 41 is connected to the first driving member 7, the first driving member 7 drives the base 41 to move along the length direction of the support tube 2, one end of the rotating seat 42 is hinged to the base 41, the other end of the rotating seat is connected to the second driving member 43, the second driving member 43 can drive the rotating seat 42 to rotate along the hinge axis, the measuring cup 5 is fixed on the side of the rotating seat 42 away from the base 41, the rotating seat 42 has a first position and a second position, when the rotating seat 42 is located at the first position, the opening of the measuring cup 5 faces to the right upper side, when the rotating seat 42 rotates from the first position to the second position, the opening of the measuring cup 5 faces to the lower side, and the second driving member 43 is connected to the controller. The opening of the measuring cup 5 faces downward and includes any angle from 90 ° to 180 ° between the rotating base 42 and the base 41, the second driving member 43 is a telescopic cylinder, a piston rod of the telescopic cylinder is hinged to one end of the rotating base 42 away from the hinged position, and a cylinder body of the telescopic cylinder is hinged to the base 41. After the detection is finished or when the measuring cup 5 needs to be taken out, the controller can control the sliding part 4 to move downwards along the supporting tube 2 and slide out of the detection box 1, the rotating seat 42 and the base 41 are arranged and connected with the second driving part 43, and after the measuring cup 5 is controlled by the controller to slide out of the detection box 1, the detected sample or the waste liquid after the cleaning of the measuring cup 5 can be automatically poured out without manual pouring, so that the automatic detection is more automatic and intelligent.
In one embodiment, as shown in fig. 4 and 5, a sliding slot is concavely arranged on one side of the base 41 close to the supporting tube 2, and a sliding rail 24 matched with the sliding slot is convexly arranged on the supporting tube 2. The sliding grooves and the sliding rails 24 are matched to enable the base 41 to move only along the length direction of the sliding rails 24 but not to move left and right, so that the position of the base 41 can be prevented from being deviated in the sliding process, a sample or liquid in the measuring cup 5 can be prevented from leaking due to instability of the base 41, and the stability and the safety of the operation of the device can be ensured.
In this embodiment, a mounting groove is concavely provided on one side of rotary seat 42 close to measuring cup 5, and a rubber ring 421 is provided on the inner wall of the mounting groove, and when measuring cup 5 is partially located in the mounting groove, rubber ring 421 abuts against between measuring cup 5 and the mounting groove. This design can make measuring cup 5 be connected inseparabler with roating seat 42, prevents to rotate the loss that in-process measuring cup 5 drops and cause sample or instrument at roating seat 42 along articulated axis, avoids the emergence of incident, and this kind of design also need not bond simultaneously and use the screw to twist to connect or bond the welded mode, and it is more convenient to install, also can take off measuring cup 5 at any time, and the convenience is maintained or is changed the instrument.
In another embodiment, a sand suction device is installed in the support tube 2, a sand outlet of the sand suction device is positioned above a cup opening of the measuring cup 5, and the controller is connected with the sand suction device. Furthermore, the sand suction device comprises a sand suction fan 21, two ends of the sand suction fan 21 are respectively connected with a sand inlet pipe 22 and a sand outlet pipe 23, an outlet of the sand outlet pipe 23 is communicated with the measuring cup 5, and the sand suction fan 21 is connected with the controller. Specifically, the controller controls the rotation speed of the sand suction fan 21 to control the sand suction amount and the sand suction speed entering the measuring cup 5, and the operation is simple.
In one embodiment, the water supply device 3 comprises a water storage tank 31 and a water tap 32, a water pump 33 is arranged in the water storage tank 31, the water pump 33 is communicated with the water tap 32 through a hose 34, a water outlet of the water tap 32 is positioned above the measuring cup 5, and the water pump 33 is connected with the controller. The operation of the water pump 33 and the speed of pumping water are controlled by the controller, manual water adding is not needed, and the use is more convenient.
In another embodiment, an opening is formed in one side of the detection box 1 away from the support tube 2, and an upper cover 12 for plugging the opening is detachably connected to the detection box 1. When the sliding part 4 or the first driving part 7 is out of order and can not be used, the measuring cup 5 can be taken out through the opening on the detection box 1, the upper cover 12 can achieve the effect of sealing and dust prevention when the instrument is not used, the cleanness of the instrument is ensured, the operation and maintenance cost is reduced, and meanwhile, the loss of parts in the detection box 1 in the instrument transportation process can also be prevented.
Preferably, the upper cover 12 is provided with a limiting hole, the sample measuring end of the detector 6 penetrates through the limiting hole to enter the measuring cup 5, the other end of the detector 6 is connected with a limiting plate, and the size of the limiting plate is larger than that of the limiting hole. Through setting up spacing hole and limiting plate, need not to use the screw to revolve to twist to connect or bond the welded mode, just can be connected detector 6 and upper cover 12, also conveniently take out from upper cover 12 at any time, convenient loading and unloading and change, when measuring cup 5 diameter is less when detector 6 length is great, take off earlier and open upper cover 12 again and also can avoid leading to the unable normal condition of opening of upper cover 12 because of detector 6 card in measuring cup 5, use more in a flexible way.
In one embodiment, the faucet 32 is connected to the hose 34 through the first rotary joint 8, the first rotary joint 8 is connected to a third driving member, the third driving member is connected to the controller, the third driving member drives the first rotary joint 8 to rotate, and the first rotary joint 8 drives the faucet 32 to rotate. Specifically, as shown in fig. 2 and 3, a circular first mounting hole 81 is formed in the center of the first rotary joint 8, the water tap 32 passes through the first mounting hole 81 to be connected to the hose 34, a portion of the water tap passing through the first mounting hole 81 is fixedly connected to the first mounting hole 81, a first arc-shaped limiting hole 82 is formed in the first rotary joint 8, the first arc-shaped limiting holes 82 are spaced at one side of the first mounting hole 81, a center of the first arc-shaped limiting hole 82 is concentric with a center of the first mounting hole 81, a first limiting post 311 is protruded on an inner side of the tank cover of the water storage tank 31, the first limiting post 311 is a threaded post, an upper end of the first limiting post 311 passes through the first arc-shaped limiting hole 82, a nut is screwed on an upper end of the first limiting post 311, so that the first rotary joint 8 can rotate along the direction of the first arc-shaped limiting hole 82 without being separated from the connection with the tank cover, preferably, the third driving member is a first motor 9, the output shaft of the first motor 9 is provided with a first gear 91, the periphery of the first rotary joint 8 is provided with a second gear 83 meshed with the first gear 91, when the first motor 9 runs, the first gear 91 drives the first rotary joint 8 meshed with the first gear 91 to rotate, so that the water faucet 32 is driven to rotate, the first rotary joint 8 is controlled to rotate by controlling the running of the first motor 9 through the controller, manual stirring is not needed, the direction of the water faucet 32 can be changed at any time, and when the sliding piece 4 or the first driving piece 7 breaks down and cannot be used, the measuring cup 5 can be taken out through an opening in the detection box 1 without hindrance.
In other embodiments, the outlet of the sand outlet pipe 23 is connected to a U-shaped metal pipe through a second rotary joint, one end of the metal pipe, which is far away from the sand outlet pipe 23, is a sand outlet of the sand suction device, the second rotary joint is connected to a fourth driving element, the fourth driving element is connected to the controller, the fourth driving element drives the second rotary joint to rotate, and the second rotary joint drives the U-shaped metal pipe to rotate. Specifically, the second rotary joint has the same structure as the first rotary joint 8, a circular second mounting hole is formed in the center of the second rotary joint, the U-shaped metal pipe passes through the second mounting hole to be connected with the sand outlet pipe 23, the part passing through the second mounting hole is fixedly connected with the second mounting hole, a second arc-shaped limiting hole is formed in the second rotary joint, the second arc-shaped limiting holes are spaced at one side of the second mounting hole, the center of the second arc-shaped limiting hole is concentric with the center of the second mounting hole, a second limiting post is convexly arranged on one side of the detection box 1 close to the support pipe 2, the second limiting post is a threaded post, the upper end of the second limiting post passes through the second arc-shaped limiting hole, a nut is screwed on the upper end of the second limiting post, so that the second rotary joint can rotate along the direction of the second arc-shaped limiting hole without being disconnected from the detection box 1, preferably, the fourth driving part is a second motor, the output shaft of the second motor is provided with a third gear, the periphery of the second rotary joint is provided with a fourth gear meshed with the third gear, when the second motor operates, the third gear drives the second rotary joint meshed with the third gear to rotate, the U-shaped metal pipe is driven to rotate, the second rotary joint is controlled to rotate by controlling the operation of the second motor through the controller, manual stirring is not needed, the direction of the U-shaped metal pipe can be changed at any time, and the measuring cup 5 can be taken out conveniently.
In another embodiment, a handle 13 is disposed on the outer side wall of the detection box 1. Preferably, handle 13 is spring handle 13, and the structure is similar with the handle structure on the suitcase, can rotate handle 13 during the use and lift up, and handle 13 automatic rebound is close to the position of detection case 1 when not using, reduces the space that occupies, is convenient for deposit and accomodate.
In other embodiments, a display screen (not shown in the figures) is disposed on an outer side wall of the detection box 1, the display screen is connected with the controller, and the display screen is used for displaying a detection result processed by the controller. The controller collects and records the detection results obtained by the detector 6, completes calculation and arrangement and sends the detection results to the display, manual measurement and calculation are not needed, human calculation errors are avoided, and efficiency and accuracy of the detection results are improved.
In the description herein, it is to be understood that the terms "upper" and the like are based on the orientation or positional relationship shown in the drawings, which are for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.
In the description herein, references to the term "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.
Furthermore, it should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be understood by those skilled in the art that the specification as a whole and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The technical principles of the present invention have been described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be taken in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, and these embodiments will fall within the scope of the present invention.
Claims (9)
1. A portable chloride ion content detector is characterized by comprising a detection box, a support tube and a controller, the upper end of the supporting tube is connected with the detection box, a water supply device and a sliding piece are arranged in the detection box, the sliding part is provided with a measuring cup, the water outlet end of the water supply device is communicated with the measuring cup, a detector for detecting the content of chloride ions is arranged in the detection box, the sample measuring end of the detector is positioned in the measuring cup, a first driving piece is arranged outside the supporting pipe and drives the sliding piece to move along the length direction of the supporting pipe, the bottom of the detection box is provided with an avoidance hole, the sliding part can penetrate through the avoidance hole to be positioned in the detection box, the controller is respectively connected with the sliding part, the water supply device, the detector and the first driving part;
The slider includes base, roating seat and second driving piece, the base with first driving piece is connected, first driving piece drive the base is followed the length direction of stay tube removes, the one end of roating seat articulates on the base, the other end with the second driving piece is connected, the second driving piece can drive the roating seat rotates along articulated axis, the measuring cup is fixed the roating seat is kept away from one side of base, the roating seat has primary importance and second place, works as when the roating seat is located primary importance, the opening of measuring cup is directly over, works as when the roating seat is rotatory to the second place by primary importance, the opening of measuring cup is down, the second driving piece with the controller is connected.
2. The portable chlorine ion content detector as claimed in claim 1, wherein a sliding groove is concavely provided on one side of the sliding member close to the supporting tube, and a sliding rail engaged with the sliding groove is convexly provided on the supporting tube.
3. The portable chlorine ion content detector as claimed in claim 1, wherein a mounting groove is concavely formed on one side of the rotary seat close to the measuring cup, a rubber ring is arranged on the inner wall of the mounting groove, and when the measuring cup is partially located in the mounting groove, the rubber ring abuts against between the measuring cup and the mounting groove.
4. The portable chloride ion content detector according to claim 1, wherein a sand suction device is installed in the supporting tube, a sand outlet of the sand suction device is located above a cup opening of the measuring cup, and the controller is connected with the sand suction device.
5. The portable chloride ion content detector according to claim 4, wherein the sand suction device comprises a sand suction fan, two ends of the sand suction fan are respectively connected with a sand inlet pipe and a sand outlet pipe, an outlet of the sand outlet pipe is communicated with the measuring cup, and the sand suction fan is connected with the controller.
6. The portable chloride ion content detector according to claim 1, wherein the water supply device comprises a water storage tank and a water tap, a water pump is arranged in the water storage tank, the water pump is communicated with the water tap through a hose, a water outlet of the water tap is positioned above the measuring cup, and the water pump is connected with the controller.
7. The portable chloride ion content detector according to claim 1, wherein an opening is opened on one side of the detection box away from the support tube, and an upper cover for plugging the opening is detachably connected to the detection box.
8. The portable chloride ion content detector according to claim 7, wherein the upper cover is provided with a limiting hole, a sample measuring end of the detector passes through the limiting hole and enters the measuring cup, the other end of the detector is connected with a limiting plate, and the size of the limiting plate is larger than that of the limiting hole.
9. The portable chloride ion content detector according to claim 1, wherein a display screen is arranged on an outer side wall of the detection box, the display screen is connected with the controller, and the display screen is used for displaying a detection result processed by the controller.
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| CN109900881A (en) * | 2019-03-23 | 2019-06-18 | 任建新 | A kind of farmland soil heavy metals contamination analysis prior-warning device |
| CN209885631U (en) * | 2019-04-13 | 2020-01-03 | 河南农业职业学院 | Chemical reagent agitating unit for chemistry experiments |
| CN210365321U (en) * | 2019-07-26 | 2020-04-21 | 山东国康电子科技有限公司 | Automatic waste liquid discharging system of trace element analyzer |
| CN210221147U (en) * | 2019-08-12 | 2020-03-31 | 安徽途辉自动化装备有限公司 | Urea case shower nozzle flow detection device of commercial car |
| CN210894341U (en) * | 2019-08-23 | 2020-06-30 | 临泽县百惠沃田生物科技有限责任公司 | Portable soil detection device |
| CN110850063A (en) * | 2019-11-28 | 2020-02-28 | 王铮 | Biodiversity check out test set is used in gardens |
| CN111796083A (en) * | 2020-08-10 | 2020-10-20 | 湖南建研信息技术股份有限公司 | Real-time monitoring device and method for content of chloride ions in sand for concrete production line |
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