A device for monitoring the concentration of food salt frozen brine

Abstract

The present invention discloses a monitoring device for the concentration of food salt-frozen brine, which relates to the technical field of brine monitoring and includes a base and a frame. The top of the base is successively provided with a pretreatment component, a non-cleaning component, and a detection component. When the present invention is in use, the measuring electrode body can reflect the content of trace elements of sodium chloride by measuring the conductivity of the brine, so as to judge the concentration of the brine. The hydraulic cylinder pushes the connecting plate to move the cylinder hook by a certain distance, and then the rotating motor drives the rotating shaft to rotate simultaneously, so that the cylinder hook rotates into the lifting ring. The hydraulic cylinder pulls the conical detection cylinder upward to discharge the brine. The reciprocating moving linear rail drives the two conical detection cylinders to move, and under the push of the hydraulic rod, they respectively fall into the front cylinder rack and the fixed pool. Through automatic cylinder replacement, the conical detection cylinder can be directly replaced to perform the next brine detection, avoiding the pollution of residual liquid and reducing the labor input.

Description

Technical Field

[0001] The present invention relates to the technical field of brine monitoring, and specifically to a device for monitoring the concentration of food salt frozen brine. Background Technique

[0002] Food salt freezing is a technology that uses brine as a cooling medium to freeze food. Compared with traditional air freezing, salt freezing can make food pass through the ice crystal formation zone faster, forming fine and uniform ice crystals, thereby better maintaining the quality and taste of food. The brine concentration directly affects its freezing point and cooling effect. If the brine concentration is too low, its freezing point will rise, and it may not be able to cool the food to a low enough temperature, resulting in poor freezing effect and difficult to guarantee the food quality; if the brine concentration is too high, it will not only increase costs, but also may have an adverse impact on the flavor and texture of food. Therefore, brine concentration monitoring is very important during the food salt freezing process.

[0003] In the prior art, sodium chloride will ionize into sodium ions and chloride ions in water, making the brine conductive. When detected by the conductivity method, the higher the brine concentration, the greater the concentration of trace ions in it, and the higher the conductivity usually is, so as to judge the brine concentration. When detecting the concentration of food salt frozen brine, usually a part of the brine sample is taken from the salt freezing tank, and then the measuring electrode is put into the detection tank for detection. After the detection is completed, the sample liquid in the detection tank needs to be drained, and then the detection tank needs to be cleaned and dried to prevent the residual liquid in the detection tank from affecting the subsequent samples.

[0004] However, during the food salt freezing process, it is necessary to take samples of the brine for detection multiple times. After each detection, the cleaning and drying processes will consume a certain amount of time, reducing the detection efficiency. Frequent cleaning and drying will cause certain wear and corrosion to the detection tank, shortening the service life of the detection tank. If the cleaning is not thorough, it will also cause the residual liquid to contaminate the subsequent samples, affecting the accuracy and reliability of the detection results.

[0005] Therefore, we propose a device for monitoring the concentration of food salt frozen brine to solve the problems raised in the above background technique. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for monitoring the concentration of food salt frozen brine to solve the problems raised in the above background technique, that is, during the food salt freezing process, it is necessary to take samples of the brine for detection multiple times, the cleaning and drying processes after detection will consume more time, reducing the detection efficiency, and frequent cleaning and drying will also cause certain wear and corrosion to the detection tank. If the cleaning is not thorough, it will also affect the accuracy and reliability of the detection results.

[0007] To achieve the above object, the present invention provides the following technical solution: A food salt freezing brine concentration monitoring device, including a base and a frame. A pretreatment component, a non-cleaning component, and a detection component are sequentially arranged on the top of the base. A PLC controller is fixedly installed on the front surface of the frame, and an automatic cylinder changing component is arranged inside the frame;

[0008] The non-cleaning component includes a fixed pool and two cylinder placing racks. A conical detection cylinder is arranged inside the fixed pool. Two fixing blocks are fixedly installed at the top of the outer surface of the conical detection cylinder. Pulling rings are fixedly installed at the tops of the two fixing blocks;

[0009] The detection component includes a conductivity meter main body, and a measuring electrode body is arranged on the outer surface of the conductivity meter main body;

[0010] The automatic cylinder changing component includes a reciprocating moving track and two hydraulic cylinders. A moving frame is arranged at the bottom of the reciprocating moving track, and four cylinder changing hooks are arranged at the bottom of the moving frame.

[0011] Preferably, the automatic cylinder changing component further includes four cylinder changing rods. Fixed rods are movably embedded inside the four cylinder changing rods. I-shaped clamping blocks are fixedly installed at the bottom ends of the four fixed rods. The tops of the four cylinder changing hooks are respectively fixedly installed at the bottoms of the four I-shaped clamping blocks. The bottom ends of the four fixed rods respectively movably penetrate to the bottoms of the four cylinder changing rods. Two rotating motors are fixedly installed on the bottom surface inside the moving frame, and rotating shafts are fixedly installed at the output ends of the two rotating motors.

[0012] Preferably, rotating blocks are fixedly installed on the outer surfaces at both ends of the two rotating shafts. The tops of the four cylinder changing rods are respectively fixedly installed at the bottoms of the four rotating blocks. Limit sliders are fixedly installed at the top ends of the four fixed rods. Limit sliding grooves are respectively opened inside the four cylinder changing rods. The outer surfaces of the four limit sliders are respectively movably embedded inside the four limit sliding grooves. Rotating plates are fixedly installed on the outer surfaces of the two rotating shafts. The tops of the two hydraulic cylinders are respectively fixedly installed at the bottoms of the two rotating plates.

[0013] Preferably, connecting plates are fixedly installed at the bottom ends of the two hydraulic cylinders. The outer surfaces of the four I-shaped clamping blocks are respectively movably embedded inside the two connecting plates. Two balance telescopic rods are fixedly connected to the bottoms of the two rotating plates. The bottom ends of the four balance telescopic rods are respectively fixedly installed at the tops of the two connecting plates. The reciprocating moving track is installed on the top surface inside the frame. An installation block is fixedly installed on the top surface inside the moving frame. One ends of the two rotating shafts are respectively movably embedded on the outer surfaces of both sides of the installation block.

[0014] Preferably, the pretreatment component includes a separation tank, a constant temperature water bath, and a sampling pump. The input end of the sampling pump is connected to a sampling pipe through a flange. One end of the sampling pipe is connected to a flow meter through a flange. The input end of the flow meter is connected to a sampling tube through a flange. The output end of the sampling pump is connected to a sample delivery pipe through a flange.

[0015] Preferably, a first solenoid valve is provided on the outer surface of the sample delivery pipe. A shunt pipe is fixedly connected to the outer surface of the sample delivery pipe. A second solenoid valve is provided on the outer surface of the shunt pipe. One end of the shunt pipe penetrates into the interior of the constant temperature water bath. One end of the sample delivery pipe extends into the interior of the separation tank. A liquid outlet pipe is fixedly connected to the bottom of the outer surface of the constant temperature water bath. A third solenoid valve is provided on the outer surface of the liquid outlet pipe.

[0016] Preferably, one end of the liquid outlet pipe fixedly penetrates into the interior of the fixed tank. The bottom of the sampling pump is installed on the rear surface of the base through an auxiliary bracket. The bottom of the separation tank is fixedly installed on one side of the top of the base. The bottom of the constant temperature water bath is installed on the top of the base near the separation tank through a support bracket.

[0017] Preferably, the detection component further includes a cleaning tank and a hydraulic rod. The top of the hydraulic rod is fixedly installed with an electric turntable. The bottom of the conductivity meter main unit is fixedly installed on the top of the electric turntable. Two fixing brackets are fixedly installed on the outer surface of the electric turntable. The outer surface of the measuring electrode body is fixedly installed inside the two fixing brackets.

[0018] Preferably, two support telescopic rods are fixedly installed on the top of the base. The tops of the two support telescopic rods are fixedly installed on the bottom of the electric turntable. The outer surface of the measuring electrode body is movably embedded inside the conical detection cylinder. The tops of the cleaning tank and the hydraulic rod are both fixedly installed on the other side of the top of the base.

[0019] Preferably, a plurality of sample discharge pipes are fixedly connected to the bottom of the conical detection cylinder. A liquid discharge pipe is fixedly connected to the bottom of the fixed tank. A plurality of hollow sealing frames are fixedly installed on the bottom surface inside the fixed tank. The tops of the plurality of hollow sealing frames are fixedly connected to spherical sealing blocks. The bottoms of the plurality of sample discharge pipes are respectively in contact with the edges of the tops of the plurality of spherical sealing blocks. The tops of the plurality of spherical sealing blocks are respectively movably embedded inside the plurality of sample discharge pipes. The bottom of the fixed tank is fixedly installed on the top of the base. The two sample placing cylinder frames are respectively located on the front surface and the rear surface of the base.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. When the present invention is in use, the measuring electrode body can reflect the content of trace elements of sodium chloride by measuring the conductivity of the brine, thereby judging the concentration of the brine. The hydraulic cylinder pushes the connecting plate to move the barrel hook a certain distance, and then rotates the motor to drive the rotating shaft to rotate simultaneously, so that the barrel hook rotates into the lifting ring and hooks the two conical detection barrels. The hydraulic cylinder pulls the conical detection barrel upward to discharge the brine. The reciprocating moving rail drives the two conical detection barrels to move, and under the push of the hydraulic rod, the two conical detection barrels respectively fall into the front barrel rack and the fixed pool. Through automatic barrel replacement, it is conducive to realizing the automation and continuity of the detection process. By directly replacing the conical detection barrel, the next brine detection can be carried out, avoiding the pollution of residual liquid, reducing the labor input, and lowering the labor cost.

[0022] 2. When the present invention is in use, start the hydraulic rod to push the electric turntable and the conductivity meter main body upward, so that the measuring electrode body moves out of the conical detection barrel. Start the electric turntable to drive the measuring electrode body to rotate above the cleaning pool. The hydraulic rod is started again to drive the measuring electrode body to move downward into the cleaning pool, and the measuring electrode body is cleaned by an external deionized water supply device and an annular cleaning pipe. Then, the external drying device and the annular drying pipe perform a drying treatment on the measuring electrode body, effectively removing the residual brine sample and impurities on the electrode surface, avoiding the interference of these substances on the next detection result, thereby improving the accuracy and reliability of the detection, realizing the full automation of the detection process, without manual intervention in the electrode cleaning process, improving the production efficiency, and reducing the influence of human factors on the detection result.

[0023] 3. When the present invention is in use, start the sampling pump to pump the brine in the food salt freezing tank into the sampling pipe through the sampling tube. The flow rate change of the brine is detected by the flow meter during the transportation process. The brine enters the separation pool through the sample delivery pipe. When the flow rate data detected by the PLC controller matches the set minimum value, the PLC controller controls the first solenoid valve to close and opens the second solenoid valve. The subsequent pumped brine sample enters the constant temperature water bath through the shunt pipe, and the constant temperature water bath is started to adjust the temperature of the brine sample. The pretreatment component first effectively discharges the brine sample remaining in the pipe last time into the separation pool to prevent it from mixing with the current sample, ensuring that the detected sample is fresh and accurate, improving the reliability of the detection result. Then, the brine is subjected to a temperature adjustment treatment to increase the brine temperature and reduce the influence on the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the first-angle three-dimensional view of a food salt frozen brine concentration monitoring device of the present invention;

[0025] Figure 2 is the second-angle three-dimensional view of a food salt frozen brine concentration monitoring device of the present invention;

[0026] Figure 3 This is the third - angle three - dimensional view of a food salt - frozen brine concentration monitoring device of the present invention;

[0027] Figure 4 This is the three - dimensional view of the unfolded structure of the base in a food salt - frozen brine concentration monitoring device of the present invention;

[0028] Figure 5 This is the schematic cross - sectional view of the structure of the non - cleaning component in a food salt - frozen brine concentration monitoring device of the present invention;

[0029] Figure 6 This is the three - dimensional view of the unfolded structure of the detection component in a food salt - frozen brine concentration monitoring device of the present invention;

[0030] Figure 7 This is the schematic cross - sectional view of the structure of the fixed pool in a food salt - frozen brine concentration monitoring device of the present invention;

[0031] Figure 8 This is the three - dimensional view of the unfolded structure of the pretreatment component in a food salt - frozen brine concentration monitoring device of the present invention;

[0032] Figure 9 This is the schematic view of the structure of the automatic cartridge - changing component in a food salt - frozen brine concentration monitoring device of the present invention;

[0033] Figure 10 This is the three - dimensional view of the unfolded structure of the moving rack in a food salt - frozen brine concentration monitoring device of the present invention;

[0034] Figure 11 This is the three - dimensional view of the unfolded structure of the rotating plate in a food salt - frozen brine concentration monitoring device of the present invention;

[0035] Figure 12 This is the schematic cross - sectional view of the structure of the cartridge - changing rod in a food salt - frozen brine concentration monitoring device of the present invention.

[0036] In the figure:

[0037] 1. Base; 2. Pretreatment component; 201. Separation tank; 202. Constant temperature water bath; 203. Sampling pump; 204. Sampling pipe; 205. Flowmeter; 206. Sampling tube; 207. Sample delivery pipe; 208. First solenoid valve; 209. Shunt pipe; 210. Second solenoid valve; 211. Liquid outlet pipe; 212. Third solenoid valve; 3. Cleaning-free component; 301. Fixed tank; 302. Cylinder rack; 303. Conical detection cylinder; 304. Fixed block; 305. Pulling ring; 306. Drain pipe; 307. Sample discharge pipe; 308. Hollow sealing frame; 309. Spherical sealing block; 4. Detection component; 401. Cleaning tank; 402. Hydraulic rod; 403. Electric turntable; 404. Conductivity meter main unit; 405. Measuring electrode body; 406. Fixed frame; 407. Support telescopic rod; 5. Frame; 6. PLC controller; 7. Automatic cylinder changing component; 701. Reciprocating moving linear guide; 702. Moving frame; 703. Rotating motor; 704. Rotating shaft; 705. Mounting block; 706. Rotating plate; 707. Hydraulic cylinder; 708. Connecting plate; 709. Rotating block; 710. Cylinder changing rod; 711. Balancing telescopic rod; 712. Fixed rod; 713. I-shaped clamping block; 714. Cylinder changing hook; 715. Limit slider; 716. Limit chute. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1: Please refer to Figures 1-12As shown in the figure, the present invention provides a technical solution: a monitoring device for the concentration of food salt frozen brine, including a base 1 and a frame 5. A pretreatment component 2, a non-cleaning component 3, and a detection component 4 are sequentially arranged on the top of the base 1. A PLC controller 6 is fixedly installed on the front surface of the frame 5, and an automatic cartridge changing component 7 is arranged inside the frame 5; the non-cleaning component 3 includes a fixed pool 301 and two cartridge placing racks 302. A conical detection cylinder 303 is arranged inside the fixed pool 301. Two fixing blocks 304 are fixedly installed at the top of the outer surface of the conical detection cylinder 303, and two lifting rings 305 are fixedly installed at the top of each of the two fixing blocks 304; the detection component 4 includes a conductivity meter main body 404, and a measuring electrode body 405 is arranged on the outer surface of the conductivity meter main body 404; the automatic cartridge changing component 7 includes a reciprocating moving rail 701 and two hydraulic cylinders 707. A moving frame 702 is arranged at the bottom of the reciprocating moving rail 701, and four cartridge changing hooks 714 are arranged at the bottom of the moving frame 702. The detection component 4 further includes a cleaning pool 401 and a hydraulic rod 402. The top end of the hydraulic rod 402 is fixedly installed with an electric turntable 403, the bottom of the conductivity meter main body 404 is fixedly installed on the top of the electric turntable 403, two fixing frames 406 are fixedly installed on the outer surface of the electric turntable 403, and the outer surface of the measuring electrode body 405 is fixedly installed inside the two fixing frames 406. Two support telescopic rods 407 are fixedly installed on the top of the base 1, and the top ends of the two support telescopic rods 407 are fixedly installed at the bottom of the electric turntable 403. The outer surface of the measuring electrode body 405 is movably embedded inside the conical detection cylinder 303. The automatic cartridge changing component 7 further includes four cartridge changing rods 710. Fixed rods 712 are movably embedded inside each of the four cartridge changing rods 710. I-shaped clamping blocks 713 are fixedly installed at the bottom ends of the four fixed rods 712. The top ends of the four cartridge changing hooks 714 are respectively fixedly installed at the bottoms of the four I-shaped clamping blocks 713. The bottom ends of the four fixed rods 712 respectively pass through the bottoms of the four cartridge changing rods 710. Two rotating motors 703 are fixedly installed on the bottom surface inside the moving frame 702. The output ends of the two rotating motors 703 are fixedly installed with rotating shafts 704. Rotating blocks 709 are fixedly installed on the outer surfaces at both ends of the two rotating shafts 704. The top ends of the four cartridge changing rods 710 are respectively fixedly installed at the bottoms of the four rotating blocks 709. Limit sliders 715 are fixedly installed at the top ends of the four fixed rods 712. Limit sliding grooves 716 are respectively opened inside the four cartridge changing rods 710. The outer surfaces of the four limit sliders 715 are respectively movably embedded inside the four limit sliding grooves 716. Rotating plates 706 are fixedly installed on the outer surfaces of the two rotating shafts 704. The top ends of the two hydraulic cylinders 707 are respectively fixedly installed at the bottoms of the two rotating plates 706. The bottom ends of the two hydraulic cylinders 707 are respectively fixedly installed with connecting plates 708. The outer surfaces of the four I-shaped clamping blocks 713 are respectively movably embedded inside the two connecting plates 708. Two balance telescopic rods 711 are fixedly connected to the bottoms of the two rotating plates 706,The bottom ends of the four balanced telescopic rods 711 are respectively fixedly installed on the tops of the two connecting plates 708. The reciprocating moving linear guide 701 is installed on the top surface inside the frame 5. An installation block 705 is fixedly installed on the top surface inside the moving frame 702. One ends of the two rotating shafts 704 are respectively movably embedded on the outer surfaces of both sides of the installation block 705. A plurality of sample discharging pipes 307 are fixedly connected to the bottom of the conical detection cylinder 303. A liquid discharging pipe 306 is fixedly connected to the bottom of the fixed pool 301. A plurality of hollow sealing frames 308 are fixedly installed on the bottom surface inside the fixed pool 301. A spherical sealing block 309 is fixedly connected to the top of each of the plurality of hollow sealing frames 308. The bottoms of the plurality of sample discharging pipes 307 are respectively in contact with the edges of the tops of the plurality of spherical sealing blocks 309. The tops of the plurality of spherical sealing blocks 309 are respectively movably embedded inside the plurality of sample discharging pipes 307. The bottom of the fixed pool 301 is fixedly installed on the top of the base 1. The two cylinder placing frames 302 are respectively located on the front surface and the rear surface of the base 1.,

[0040] In this embodiment, during use, the constant temperature water bath 202, the sampling pump 203, the flow meter 205, the first solenoid valve 208, the second solenoid valve 210, the third solenoid valve 212, the hydraulic rod 402, the electric turntable 403, the conductivity meter main unit 404, the measurement electrode body 405, the reciprocating moving linear guide 701, the rotating motor 703, the hydraulic cylinder 707 and the PLC controller 6 are electrically connected. Among them, the constant temperature water bath 202, the electric turntable 403 and the reciprocating moving linear guide 701 are all existing mature technologies and will not be elaborated here. The structure of the conical detection cylinder 303 is as Figure 5 shown, wider at the top and narrower at the bottom. A spare conical detection cylinder 303 is placed inside the cylinder placing frame 302 located at the rear, as Figure 5 shown. One end of the sampling pipe 206 is connected to the food salt freezing pool. When it is necessary to detect the concentration of the brine, the flow meter 205 is started, the brine is pretreated by the pretreatment assembly 2, the third solenoid valve 212 is opened, and the heated brine is transported into the conical detection cylinder 303 through the liquid outlet pipe 211. The measurement electrode body 405 is started by the conductivity meter main unit 404, and at the same time, the hydraulic rod 402 is started to pull the electric turntable 403 and the conductivity meter main unit 404 to move downward, and the measurement electrode body 405 is driven into the brine inside the conical detection cylinder 303 through the fixing frame 406, as Figure 6As shown. In salt water, trace elements of sodium chloride are completely ionized into sodium ion elements and chloride ion elements, and the conductivity of salt water mainly depends on the concentration and moving speed of these ions. Under certain temperature and pressure conditions, the moving speed of ions is relatively stable, so the conductivity of salt water is directly proportional to the ion concentration. After the measuring electrode body 405 contacts with the salt water, the conductivity of the salt water is reflected by measuring the resistance of the salt water between the electrodes. When an electric current passes through the measuring electrode body 405, the ions in the salt water move directionally under the action of the electric field to form an electric current. The measuring electrode body 405 converts this current signal into a conductivity value, and according to the pre-established conductivity-concentration relationship model, converts the conductivity value into the corresponding salt water concentration value, and displays the salt water concentration data through the display screen on the PLC controller 6. By measuring the conductivity of the salt water, the content of trace elements of sodium chloride can be reflected, so as to judge the concentration of the salt water. After the salt water concentration detection is completed, through the detection component 4, the measuring electrode body 405 is made to leave the inside of the conical detection cylinder 303 and is cleaned. At the same time, two hydraulic cylinders 707 are started, pushing the two connecting plates 708 to move a short distance in the lower right direction together, driving the four I-shaped clamping blocks 713 and the four cylinder-changing hooks 714 to move together. At the same time, the four fixing rods 712 are pulled to move inside the corresponding cylinder-changing rods 710, so that the cylinder-changing hooks 714 move a short distance, and then the hydraulic cylinders 707 automatically pause for a while. Then the two rotating motors 703 are started simultaneously, driving the two rotating shafts 704 to rotate clockwise at the same time, so that the four rotating blocks 709 and the two rotating plates 706 rotate together, further driving the connecting plate 708, the cylinder-changing rod 710, the I-shaped clamping block 713 and the cylinder-changing hook 714 to rotate together, so that one end of the two front cylinder-changing hooks 714 rotates into the two lifting rings 305 on the outer surface of the conical detection cylinder 303 inside the fixed pool 301, and one end of the two rear cylinder-changing hooks 714 rotates into the two lifting rings 305 on the outer surface of the conical detection cylinder 303 inside the rear cylinder placing rack 302, and at the same time hooks the two conical detection cylinders 303. Then the two rotating motors 703 automatically pause for a while. At this time, the two hydraulic cylinders 707 resume working and move upward at the same time, driving the I-shaped clamping block 713 and the cylinder-changing hook 714 to move upward together through the connecting plate 708, slowly pulling out the front conical detection cylinder 303 from the fixed pool 301. During this process, the multiple sampling pipes 307 gradually leave the outer surface of the corresponding spherical sealing block 309, so that the sampling pipes 307 gradually lose the blockage of the spherical sealing block 309 and become in a flowing state. During the upward movement of the conical detection cylinder 303, the salt water inside it will be discharged into the fixed pool 301 through the multiple sampling pipes 307 and discharged through the drain pipe 306.Meanwhile, the conical detection cylinder 303 at the rear will move upward from the cylinder rack 302. When the sampling pipes 307 at the bottoms of the two conical detection cylinders 303 respectively move to the arc top of the fixed pool 301 and the top of the cylinder rack 302, the two hydraulic cylinders 707 pause again for a period of time to facilitate the front conical detection cylinder 303 to drain all the brine. Then, the reciprocating moving track 701 is started to drive the moving frame 702 and the two conical detection cylinders 303 held at its bottom to move forward. When the reciprocating moving track 701 pauses, the front conical detection cylinder 303 moves to the front cylinder rack 302, and the rear conical detection cylinder 303 moves into the fixed pool 301. At this time, the hydraulic cylinder 707 resumes working and pushes the two conical detection cylinders 303 to move downward again. At this time, the two conical detection cylinders 303 respectively fall into the front cylinder rack 302 and the fixed pool 301, and the sampling pipes 307 at the bottoms of the conical detection cylinders 303 are inserted into the top of the spherical seal block 309 again, and the spherical seal block 309 is used to block it to prevent subsequent brine leakage and affect the detection accuracy. The detected conical detection cylinder 303 will be placed inside the front cylinder rack 302, and the structure of the cylinder rack 302 is as follows. Figure 9 As shown, a leakage hole is provided in the middle. The residual brine inside the detected conical detection cylinder 303 will flow to the bottom surface inside the cylinder rack 302 through the leakage hole to prevent the brine from dripping onto the ground and causing environmental mess. Then, the two rotating motors 703 are started again to drive the rotating shaft 704 to rotate in the reverse direction, so that the hydraulic cylinder 707, the connecting plate 708, the cylinder changing rod 710, the fixed rod 712 and the I-shaped clamping block 713 rotate in the reverse direction together, further causing the cylinder changing hook 714 to rotate away from the inside of the lifting ring 305. Then, the hydraulic cylinder 707 is started again to make the cylinder changing hook 714 move upward to reset, without affecting the normal operation of the subsequent detection component 4. Finally, the reciprocating moving track 701 drives the moving frame 702 and the four cylinder changing hooks 714 to move in the reverse direction to reset, as Figure 9As shown in the figure. When the automatic cylinder changing assembly 7 is working, the staff places the spare conical detection cylinder 303 on the rear cylinder placing rack 302 to facilitate the smooth progress of subsequent automatic cylinder changing work. Under the action of the detection assembly 4, the detection of the brine concentration is realized. In the non-cleaning assembly 3, there are a detection conical detection cylinder 303, a spare conical detection cylinder 303, and a matching fixed pool 301 and cylinder placing rack 302. After each detection is completed, by directly replacing the conical detection cylinder 303, the next brine detection can be carried out without waiting for the cleaning and drying process of the detection tank, greatly shortening the detection cycle, improving the detection efficiency, and each conical detection cylinder 303 is only used for one detection. After detection, a clean new conical detection cylinder 303 is replaced for the next detection, avoiding the contamination of subsequent samples by the residual liquid caused by incomplete cleaning of the detection tank, and improving the accuracy and reliability of the detection results. With the cooperation of the automatic cylinder changing assembly 7, the brine discharge and automatic cylinder changing operations can be carried out on the detected conical detection cylinder 303. With the cooperation of the PLC controller 6, the automatic cylinder changing work can be realized, the replacement of the conical detection cylinder 303 can be completed in a short time, the detection efficiency is improved, which is conducive to the automation and continuity of the detection process, reduces the labor input, reduces the labor cost, and at the same time, also reduces the safety risks brought by personnel operations, and improves the safety of the production process. With the cooperation of the non-cleaning assembly 3 and the automatic cylinder changing assembly 7, the problem that during the food salt freezing process, the brine needs to be sampled and detected multiple times, the cleaning and drying process after detection will consume a lot of time, reduce the detection efficiency, and frequent cleaning and drying will also cause certain wear and corrosion to the detection tank. If the cleaning is not thorough, it will also affect the accuracy and reliability of the detection results is solved.

[0041] Embodiment 2: As Figures 3-6 shown, the detection assembly 4 further includes a cleaning pool 401 and a hydraulic rod 402. The top of the hydraulic rod 402 is fixedly installed with an electric turntable 403. The bottom of the conductivity meter main unit 404 is fixedly installed on the top of the electric turntable 403. Two fixing frames 406 are fixedly installed on the outer surface of the electric turntable 403. The outer surface of the measuring electrode body 405 is fixedly installed inside the two fixing frames 406. Two support telescopic rods 407 are fixedly installed on the top of the base 1. The tops of the two support telescopic rods 407 are both fixedly installed on the bottom of the electric turntable 403. The outer surface of the measuring electrode body 405 is movably embedded inside the conical detection cylinder 303. The tops of the cleaning pool 401 and the hydraulic rod 402 are both fixedly installed on the other side of the top of the base 1.

[0042] In this embodiment, during use, after the pre-treated brine is injected into the conical detection cylinder 303, the hydraulic rod 402 is started to pull the electric turntable 403 and the conductivity meter main unit 404 downward, and the measuring electrode body 405 is driven into the brine inside the conical detection cylinder 303 through the fixing frame 406 to detect the brine concentration. After the brine concentration detection is completed, the hydraulic rod 402 is started again to push the electric turntable 403 and the conductivity meter main unit 404 upward, so that the measuring electrode body 405 is removed from the inside of the conical detection cylinder 303. Then the automatic cylinder changing assembly 7 works, and at the same time the electric turntable 403 is started to drive the conductivity meter main unit 404 and the measuring electrode body 405 to rotate. When the electric turntable 403 automatically shuts down, the measuring electrode body 405 rotates above the cleaning pool 401. An annular cleaning pipe and an annular drying pipe are arranged in the cleaning pool 401. The water inlet end of the annular cleaning pipe is connected to an external deionized water supply device, and the air inlet end of the annular drying pipe is connected to an external air drying device. After the hydraulic rod 402 is started again, it pulls the electric turntable 403 downward, so that the measuring electrode body 405 moves downward into the cleaning pool 401, and the measuring electrode body 405 is cleaned through the external deionized water supply device and the annular cleaning pipe. Then the external air drying device and the annular drying pipe perform a drying treatment on the measuring electrode body 405. While the automatic cylinder changing operation is carried out, the measuring electrode body 405 is cleaned and dried, effectively removing the residual brine samples and impurities on the electrode surface, avoiding the interference of these substances on the next detection result, thereby improving the accuracy and reliability of the detection, realizing the full automation of the detection process, eliminating the need for manual intervention in the electrode cleaning process, improving the production efficiency, and reducing the influence of human factors on the detection result.

[0043] Embodiment 3: As Figures 2-3 and Figure 8As shown, the pretreatment component 2 includes a separation tank 201, a constant temperature water bath 202, and a sampling pump 203. The input end of the sampling pump 203 is connected to a sampling pipe 204 through a flange. One end of the sampling pipe 204 is connected to a flow meter 205 through a flange. The input end of the flow meter 205 is connected to a sampling tube 206 through a flange. The output end of the sampling pump 203 is connected to a sample delivery pipe 207 through a flange. A first solenoid valve 208 is provided on the outer surface of the sample delivery pipe 207. A shunt pipe 209 is fixedly connected to the outer surface of the sample delivery pipe 207. A second solenoid valve 210 is provided on the outer surface of the shunt pipe 209. One end of the shunt pipe 209 penetrates into the interior of the constant temperature water bath 202. One end of the sample delivery pipe 207 extends into the interior of the separation tank 201. A liquid outlet pipe 211 is fixedly connected to the bottom of the outer surface of the constant temperature water bath 202. A third solenoid valve 212 is provided on the outer surface of the liquid outlet pipe 211. One end of the liquid outlet pipe 211 fixedly penetrates into the interior of the fixed tank 301. The bottom of the sampling pump 203 is installed on the rear surface of the base 1 through an auxiliary bracket. The bottom of the separation tank 201 is fixedly installed on one side of the top of the base 1. The bottom of the constant temperature water bath 202 is installed on the top of the base 1 near the separation tank 201 through a support frame.

[0044] In this embodiment, during use, a water outlet pipe is connected to the bottom of the separation tank 201, and a valve is provided on the outer surface of the water outlet pipe, such as Figure 4As shown. Start the sampling pump 203, and pump the brine in the food salt freezing tank to the sampling pipe 204 through the sampling tube 206. During the brine transportation process, it passes through the flowmeter 205 to detect the brine flow rate, and the detected flow rate is transmitted to the PLC controller 6 for identification and comparison. The second solenoid valve 210 is in the closed state, and the first solenoid valve 208 is in the open state. The brine is transported from the sampling pipe 204 to the sample delivery pipe 207, and then enters the inside of the separation tank 201. When the flow rate data detected by the PLC controller 6 matches the set minimum value, the PLC controller 6 controls the first solenoid valve 208 to close and opens the second solenoid valve 210, so that the subsequent pumped brine samples enter the shunt pipe 209 through the sample delivery pipe 207, and finally enter the constant temperature water bath 202. Start the constant temperature water bath 202 to adjust the temperature of the brine sample. When the flow rate data received by the PLC controller 6 matches the set maximum data, the sampling pump 203 and the second solenoid valve 210 will be closed, and the first solenoid valve 208 will be opened. The pretreatment component 2 can preprocess the extracted brine. First, effectively discharge the remaining brine sample in the pipe to the separation tank 201 to prevent it from mixing with the current sample, ensure that the detected sample is fresh and accurate, improve the reliability of the detection results, and avoid problems such as concentration deviation caused by the remaining sample. Then, perform temperature adjustment on the brine. The brine temperature in the salt freezing tank is relatively low. The slower the ion movement speed, the weaker the conductivity, which will affect the accurate judgment of the brine concentration. The constant temperature water bath 202 ensures that the brine sample is evenly heated, increases the brine temperature, and reduces the impact on the detection results.

[0045] The effects achieved by the entire mechanism and its working principle are as follows: Start the sampling pump 203, and pump the brine in the food salt freezing tank to the sampling pipe 204 through the sampling tube 206. The brine passes through the flowmeter 205 to detect the brine flow rate, and the detected flow rate is transmitted to the PLC controller 6 for identification and comparison. The brine is transported from the sampling pipe 204 to the sample delivery pipe 207, and then enters the inside of the separation tank 201. When the flow rate data detected by the PLC controller 6 matches the set minimum value, the PLC controller 6 controls the first solenoid valve 208 to close and opens the second solenoid valve 210. The brine sample enters the shunt pipe 209 through the sample delivery pipe 207 and finally enters the constant temperature water bath 202. Start the constant temperature water bath 202 to adjust the temperature of the brine sample. When the flow rate data received by the PLC controller 6 matches the set maximum data, the sampling pump 203 and the second solenoid valve 210 will be closed, and the first solenoid valve 208 will be opened. Open the third solenoid valve 212, and transport the heated brine to the inside of the conical detection cylinder 303 through the liquid outlet pipe 211. Start the hydraulic rod 402 to pull the electric turntable 403 and the conductivity meter main body 404 downward, and drive the measurement electrode body 405 into the brine inside the conical detection cylinder 303 through the fixing frame 406. When an electric current passes through the measurement electrode body 405, the ions in the brine move directionally under the action of the electric field to form an electric current. The measurement electrode body 405 converts this electric current signal into a conductivity value and converts it into a corresponding brine concentration value, thereby judging the concentration of the brine. After the brine concentration detection is completed, start the hydraulic rod 402 again to push the electric turntable 403 and the conductivity meter main body 404 upward, so that the measurement electrode body 405 moves out of the inside of the conical detection cylinder 303. Then start the electric turntable 403 to drive the conductivity meter main body 404 and the measurement electrode body 405 to rotate. When the electric turntable 403 automatically closes, the measurement electrode body 405 rotates above the cleaning pool 401. After the hydraulic rod 402 is started again, pull the electric turntable 403 downward, so that the measurement electrode body 4 performs cleaning and drying treatment inside the cleaning pool 401. At the same time, start two hydraulic cylinders 707 to push the connecting plate 708, the I-shaped clamping block 713 and the cylinder changing hook 714 to move together, and then the hydraulic cylinders 707 automatically pause for a while.Subsequently, the two rotating motors 703 are started simultaneously, driving the two rotating shafts 704 to rotate clockwise simultaneously, causing the four rotating blocks 709 and the two rotating plates 706 to rotate together, further driving the connecting plate 708, the cylinder changing rod 710, the I-shaped clamping block 713, and the cylinder changing hook 714 to rotate together, so that the cylinder changing hook 714 rotates into the inside of the lifting ring 305 and hooks the two conical detection cylinders 303. Then the two rotating motors 703 automatically pause for a while. At this time, the two hydraulic cylinders 707 pull the I-shaped clamping block 713 and the cylinder changing hook 714 to move upward together through the connecting plate 708, pulling up the front conical detection cylinder 303. The sampling tube 307 leaves the top of the spherical sealing block 309, and the brine inside it is discharged into the fixed pool 301 and discharged through the drain pipe 306. At the same time, the rear conical detection cylinder 303 will move upward out of the cylinder placing rack 302. Then the two hydraulic cylinders 707 pause again for a period of time. After the brine is discharged, the reciprocating moving linear guide 701 is started, driving the moving frame 702 and the two conical detection cylinders 303 being lifted and pulled forward. When the reciprocating moving linear guide 701 pauses, the front conical detection cylinder 303 moves to the front cylinder placing rack 302, and the rear conical detection cylinder 303 moves into the fixed pool 301. At this time, the hydraulic cylinders 707 resume working and push the two conical detection cylinders 303 downward again, respectively falling into the front cylinder placing rack 302 and the fixed pool 301, and the sampling tube 307 at the bottom of the conical detection cylinder 303 is inserted into the top of the spherical sealing block 309 again to block it through the spherical sealing block 309. And the detected conical detection cylinder 303 will be placed inside the front cylinder placing rack 302. Then the two rotating motors 703 are started again, driving the rotating shaft 704 to rotate in the reverse direction, so that the cylinder changing hook 714 rotates out of the inside of the lifting ring 305. Then the hydraulic cylinders 707 are started again, causing the cylinder changing hook 714 to move upward to reset. Finally, the reciprocating moving linear guide 701 drives the moving frame 702 and the four cylinder changing hooks 714 to move in the reverse direction to reset. When the automatic cylinder changing assembly 7 is working, the staff places the spare conical detection cylinder 303 on the rear cylinder placing rack 302 to facilitate the smooth progress of the subsequent automatic cylinder changing work.

[0046] Among them, the constant temperature water bath 202, the sampling pump 203, the flowmeter 205, the first solenoid valve 208, the second solenoid valve 210, the third solenoid valve 212, the hydraulic rod 402, the electric turntable 403, the conductivity meter main unit 404, the measurement electrode body 405, the reciprocating moving linear guide 701, the rotating motor 703, the hydraulic cylinder 707, and the PLC controller 6 are all prior arts, and their components and usage principles are all publicly known technologies, and no further explanation will be given here.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A food salt frozen brine concentration monitoring device, comprising a base (1) and a frame (5), characterized in that: The pretreatment component (2), the non - cleaning component (3) and the detection component (4) are sequentially arranged on the top of the base (1). The PLC controller (6) is fixedly installed on the front surface of the frame (5), and the automatic cylinder changing component (7) is arranged inside the frame (5); The non - cleaning component (3) includes a fixed pool (301) and two cylinder placing racks (302). A conical detection cylinder (303) is arranged inside the fixed pool (301). Two fixing blocks (304) are fixedly installed at the top of the outer surface of the conical detection cylinder (303). Pulling rings (305) are fixedly installed at the tops of the two fixing blocks (304); The detection component (4) includes a conductivity meter main unit (404), and a measuring electrode body (405) is arranged on the outer surface of the conductivity meter main unit (404); The automatic cylinder changing component (7) includes a reciprocating moving linear guide (701) and two hydraulic cylinders (707). A moving frame (702) is arranged at the bottom of the reciprocating moving linear guide (701), and four cylinder changing hooks (714) are arranged at the bottom of the moving frame (702); The automatic cylinder changing component (7) further includes four cylinder changing rods (710). Fixing rods (712) are movably embedded inside the four cylinder changing rods (710). I - shaped clamping blocks (713) are fixedly installed at the bottom ends of the four fixing rods (712). The tops of the four cylinder changing hooks (714) are respectively fixedly installed at the bottoms of the four I - shaped clamping blocks (713). The bottom ends of the four fixing rods (712) respectively movably penetrate to the bottoms of the four cylinder changing rods (710). Two rotating motors (703) are fixedly installed on the bottom surface inside the moving frame (702). Output shafts (704) are fixedly installed at the output ends of the two rotating motors (703); Rotating blocks (709) are fixedly installed on the outer surfaces at both ends of the two output shafts (704). The tops of the four cylinder changing rods (710) are respectively fixedly installed at the bottoms of the four rotating blocks (709). Limit sliders (715) are fixedly installed at the top ends of the four fixing rods (712). Limit sliding grooves (716) are respectively opened inside the four cylinder changing rods (710). The outer surfaces of the four limit sliders (715) are respectively movably embedded inside the four limit sliding grooves (716). Rotating plates (706) are fixedly installed on the outer surfaces of the two output shafts (704). The tops of the two hydraulic cylinders (707) are respectively fixedly installed at the bottoms of the two rotating plates (706); The bottom ends of the two hydraulic cylinders (707) are fixedly installed with connecting plates (708). The outer surfaces of the four I-shaped blocks (713) are respectively movably embedded in the two connecting plates (708). The bottoms of the two rotating plates (706) are fixedly connected with two balancing telescopic rods (711). The bottom ends of the four balancing telescopic rods (711) are respectively fixedly installed on the tops of the two connecting plates (708). The reciprocating moving linear guide (701) is installed on the top surface inside the frame (5). The top surface inside the moving frame (702) is fixedly installed with a mounting block (705). One ends of the two rotating shafts (704) are respectively movably embedded in the outer surfaces on both sides of the mounting block (705).

2. The food salt freezing brine concentration monitoring device according to claim 1, wherein: The pretreatment assembly (2) includes a separation tank (201), a constant temperature water bath (202) and a sampling pump (203). The input end of the sampling pump (203) is connected with a sampling pipe (204) through a flange. One end of the sampling pipe (204) is connected with a flow meter (205) through a flange. The input end of the flow meter (205) is connected with a sampling tube (206) through a flange. The output end of the sampling pump (203) is connected with a sample delivery pipe (207) through a flange.

3. The food salt freezing brine concentration monitoring device according to claim 2, characterized in that: A first solenoid valve (208) is arranged on the outer surface of the sample delivery pipe (207). The sample delivery pipe (207) is fixedly connected with a shunt pipe (209). A second solenoid valve (210) is arranged on the outer surface of the shunt pipe (209). One end of the shunt pipe (209) penetrates into the constant temperature water bath (202). One end of the sample delivery pipe (207) extends into the separation tank (201). A liquid outlet pipe (211) is fixedly connected to the bottom of the outer surface of the constant temperature water bath (202). A third solenoid valve (212) is arranged on the outer surface of the liquid outlet pipe (211).

4. The food salt frozen brine concentration monitoring device according to claim 3, characterized in that: One end of the liquid outlet pipe (211) fixedly penetrates into the fixing tank (301). The bottom of the sampling pump (203) is installed on the rear surface of the base (1) through an auxiliary frame. The bottom of the separation tank (201) is fixedly installed on one side of the top of the base (1). The bottom of the constant temperature water bath (202) is installed on the top of the base (1) near the separation tank (201) through a support frame.

5. The food salt freezing brine concentration monitoring device according to claim 4, wherein: The detection assembly (4) further includes a cleaning tank (401) and a hydraulic rod (402). The top end of the hydraulic rod (402) is fixedly installed with an electric turntable (403). The bottom of the conductivity meter main unit (404) is fixedly installed on the top of the electric turntable (403). Two fixing frames (406) are fixedly installed on the outer surface of the electric turntable (403). The outer surface of the measuring electrode body (405) is fixedly installed inside the two fixing frames (406).

6. The food salt frozen brine concentration monitoring device according to claim 5, characterized in that: Two support telescopic rods (407) are fixedly installed at the top of the base (1), the top ends of the two support telescopic rods (407) are fixedly installed at the bottom of the electric turntable (403), the outer surface of the measurement electrode body (405) is movably embedded in the internal part of the conical detection cylinder (303), and the tops of the cleaning pool (401) and the hydraulic rod (402) are fixedly installed at the other side of the top of the base (1).

7. The food salt frozen brine concentration monitoring device according to claim 6, characterized in that: A plurality of sample discharging pipes (307) are fixedly connected to the bottom of the conical detection cylinder (303), a liquid discharging pipe (306) is fixedly connected to the bottom of the fixing pool (301), a plurality of hollow sealing frames (308) are fixedly installed on the bottom surface of the internal part of the fixing pool (301), a spherical sealing block (309) is fixedly connected to the top of each of the plurality of hollow sealing frames (308), the bottoms of the plurality of sample discharging pipes (307) are respectively in contact with the edges of the tops of the plurality of spherical sealing blocks (309), the tops of the plurality of spherical sealing blocks (309) are respectively movably embedded in the internal parts of the plurality of sample discharging pipes (307), the bottom of the fixing pool (301) is fixedly installed on the top of the base (1), and the two cylinder placing frames (302) are respectively located on the front surface and the rear surface of the base (1).

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