Concentrate dilution concentration detection device and method

Abstract

This invention relates to the field of detection devices, and discloses a device and method for detecting the concentration of diluted concentrate. The device includes a dilution mixing mechanism (100) and a filtration mechanism (300) installed on its upper end. The top of the filtration mechanism is connected to an inlet pipe (200). A reciprocating pumping titration mechanism (600) is provided outside the dilution mixing mechanism. The outlet end of the dilution mixing mechanism is connected to the inlet end of the reciprocating pumping titration mechanism through an outlet pipe (400). The vacuum end of the dilution mixing mechanism is connected to the inlet end of the reciprocating pumping titration mechanism through a vacuum hose (500). When the inlet pipe and outlet pipe are closed and the vacuum hose is open, the reciprocating pumping titration mechanism is used to evacuate the dilution mixing mechanism. When the outlet pipe is open and the vacuum hose is closed, the reciprocating pumping titration mechanism is used to unidirectionally draw the concentrate to be tested into the reciprocating pumping titration mechanism in a predetermined amount for titration detection.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, specifically to a device for detecting the concentration of diluted concentrate, and also to a method for detecting the concentration of diluted concentrate. Background Technology

[0002] The hydraulic fluid formed after dilution of the concentrate must possess sufficient lubricity to reduce wear on the moving parts of the support system. Insufficient concentration leads to inadequate lubrication, accelerating damage to seals and hydraulic components; excessive concentration may increase viscous resistance, affecting the support system's response speed. Furthermore, concentration deviations in the concentrate affect pressure transmission efficiency; that is, concentration deviations affect the viscosity and compressibility of the hydraulic fluid, thus impacting the accuracy of pressure transmission and the synchronization of support system movements. The concentrate contains rust inhibitors (such as amines and borates). Insufficient concentration allows moisture and oxygen to corrode metal pipes and valve assemblies; excessive concentration may cause additive deposition, clogging filters or precision valves. Therefore, abnormal concentrate concentration can lead to premature failure of critical components such as pumps, valves, and cylinders. For example, insufficient lubrication from low-concentration liquids may cause piston pump seizure, while high-concentration liquids may cause cavitation due to increased foaming. In severe cases, sudden malfunctions caused by degraded concentrate performance increase the difficulty and risk of underground mine maintenance. Moreover, from an economic perspective, precise proportioning prevents overuse (high cost) or under-dilution (high risk) of the concentrate. For example, a 5% concentration error could lead to an increase in annual usage of 10% to 15%.

[0003] Therefore, there is an urgent need for a device for detecting the concentration of concentrated liquid used in hydraulic supports, which can be used to detect the concentration of the concentrated liquid after dilution, or to dilute the concentrated liquid according to a predetermined dilution concentration, thereby obtaining a diluted liquid of the required concentration. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned problems existing in the prior art and to provide a concentrated solution dilution concentration detection device and method. The concentrated solution dilution concentration detection device is used to accurately detect the concentration of the concentrated solution after dilution, or to dilute the concentrated solution according to a predetermined dilution concentration by sampling and detection, thereby obtaining a diluted solution of the required concentration, ensuring that the diluted concentrated solution has excellent lubrication, sealing and pressure transmission efficiency, reducing the failure rate, and avoiding unplanned shutdowns of hydraulic supports.

[0005] To achieve the above objectives, the present invention provides a concentrated solution dilution concentration detection device for a hydraulic support, comprising a dilution mixing mechanism and a filtration mechanism mounted on its upper end. The top of the filtration mechanism is connected to an inlet pipe, and a reciprocating pumping titration mechanism is provided outside the dilution mixing mechanism. The outlet end of the dilution mixing mechanism is connected to the inlet end of the reciprocating pumping titration mechanism through an outlet pipe, and the air extraction end of the dilution mixing mechanism is connected to the inlet end of the reciprocating pumping titration mechanism through an air extraction hose. When the inlet pipe and the outlet pipe are closed and the vacuum hose is open, the reciprocating pumping titration mechanism is used to evacuate the dilution mixing mechanism. When the outlet pipe is in the open state and the suction hose is in the closed state, the reciprocating suction and discharge titration mechanism is used to unidirectionally draw the concentrated liquid to be tested into the reciprocating suction and discharge titration mechanism in a predetermined amount for titration testing.

[0006] Preferably, the dilution mixing mechanism includes a mixing vessel and a central vertical pipe extending into the internal chamber of the mixing vessel. The upper end of the central vertical pipe is connected to the filtration mechanism. A liquid outlet cone is provided at the bottom of the internal chamber of the mixing vessel and is connected to it. The bottom of the liquid outlet cone is connected to the liquid outlet pipe. The air outlet at the top of the internal chamber of the mixing vessel is connected to the air extraction hose.

[0007] Preferably, the discharge cone includes a cone-shaped disc with the small end facing upward, the interior of the cone-shaped disc has a discharge chamber that communicates with the central vertical pipe, and the cone surface of the cone-shaped disc has a plurality of discharge holes that communicate with the internal chamber of the mixing vessel.

[0008] Preferably, the conical disc has multiple agitator blades spaced circumferentially on its outer surface, and a transfer pipe extending out and rotatably connected to the bottom wall of the mixing vessel is connected to the center of the lower end of the conical disc. A transmission wheel that drives the transfer pipe to rotate is provided on the outer wall of the transfer pipe, and the upper end of the central vertical pipe is rotatably connected to the mixing vessel.

[0009] Preferably, the mixing vessel includes an upper vessel body and a lower vessel body arranged opposite to each other and interlocked, and the outer walls of the upper vessel body and the lower vessel body are connected by a first vertical drive member for driving them closer or further apart.

[0010] Preferably, the central vertical tube includes an upper tube and a lower tube that are interlocked and rotate synchronously. The upper end of the upper tube is connected to the filtration mechanism, and the lower tube is connected to the top of the liquid outlet cone.

[0011] Preferably, the filtration mechanism includes an assembly cylinder connected to the upper end of the dilution and mixing mechanism. The internal chamber of the assembly cylinder is provided with a plurality of filter elements from top to bottom, and a connecting cap is detachably connected to the open top end of the assembly cylinder.

[0012] Preferably, the filter element includes a filter element body that protrudes upward in the middle, an assembly ring is formed on the outer peripheral side of the filter element body, the assembly rings of adjacent filter element bodies abut against each other, a flow-through area is formed between adjacent filter element bodies, and an anti-rotation structure is provided at the connection between the assembly ring and the inner sidewall of the assembly cylinder.

[0013] Preferably, an adjusting sleeve is fitted and threaded onto the outer periphery of the inlet pipe, and an adapter is rotatably connected to the outer periphery of the adjusting sleeve. A vertical limiting rod is slidably inserted into the connecting cover at the outer end of the adapter, and the lower end of the vertical limiting rod abuts against the edge of the uppermost filter element for pressing.

[0014] Preferably, the reciprocating pumping titration mechanism includes a vertical detection cylinder and a piston body slidably connected to its internal chamber. The lower end of the piston body is connected to a piston rod extending outside the vertical detection cylinder. The lower end of the piston rod is connected to an adapter plate. The adapter plate is connected to the outer wall of the vertical detection cylinder through a retractable second vertical driving member. The top of the vertical detection cylinder is provided with a medium inlet pipe and a medium outlet pipe communicating with its internal chamber. A first one-way valve is installed on the medium inlet pipe, and a second one-way valve is installed on the medium outlet pipe.

[0015] Preferably, the piston rod is rotatably connected to the adapter plate, an operating handwheel is installed on the piston rod, and a plurality of mixing blades for agitating the liquid in the vertical detection cylinder are provided on the upper surface of the piston body.

[0016] Preferably, the vertical detection cylinder is made of a transparent material and has a first scale mark on its outer wall.

[0017] Preferably, the top of the vertical detection cylinder is connected to a burette, the burette comprising a vertical cylinder with an open top, the bottom of the vertical cylinder being connected to the vertical detection cylinder via a burette, and the burette being equipped with an on / off valve.

[0018] Preferably, the vertical cylinder is made of transparent material and its outer wall is provided with a second scale mark.

[0019] Preferably, a first control valve is provided on the liquid outlet pipe, and a second control valve is provided on the air extraction hose.

[0020] A second aspect of the present invention provides a method for detecting the concentration of a concentrated solution after dilution, comprising the following steps: Step S100. The concentrated solution to be tested is introduced into the dilution and mixing mechanism through the inlet pipe and the filtration mechanism; Step S200. Close the liquid outlet pipe and open the vacuum hose, then control the reciprocating pumping titration mechanism to evacuate the dilution and mixing mechanism through the vacuum hose. Step S300. Open the liquid outlet pipe and close the suction hose, then control the reciprocating pumping titration mechanism to make the diluted concentrate enter the reciprocating pumping titration mechanism in a predetermined amount. Step S400. Gradually add the titrant into the reciprocating pumping titration mechanism until the color changes abruptly. Step S500. Calculate the concentration of the concentrate to be tested based on the volume of titrant consumed.

[0021] Preferably, the method further includes step S600: determining whether the concentrate to be tested is a diluted concentrate of the required concentration; if not, continuing to add the concentrate or diluent to the dilution mixing mechanism and mixing it again; then, discharging the measured liquid from the reciprocating pumping titration mechanism and repeating steps S200 to S500 until the diluted concentrate reaches the required concentration.

[0022] The above technical solution, through the setting of a filtration mechanism, achieves the filtration of impurities in the diluted concentrate, thereby improving the purity of the diluted concentrate; the reciprocating pumping titration mechanism is used to vacuum the dilution mixing mechanism, effectively removing air bubbles in the liquid and avoiding deviations in subsequent test data; the titration test of the reciprocating pumping titration mechanism can accurately detect the concentration of the diluted concentrate, or the concentrate can be diluted to a predetermined concentration through sampling test, thereby obtaining the required concentration of diluted concentrate, ensuring that the diluted concentrate has excellent lubrication, sealing, and pressure transmission efficiency, reducing the failure rate, and avoiding unplanned downtime of the hydraulic support. Attached Figure Description

[0023] Figure 1 This is an overall structural diagram of a concentrated solution dilution concentration detection device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the dilution mixing mechanism, the filtration mechanism and the liquid inlet pipe assembly of the concentrate dilution concentration detection device according to an embodiment of the present invention. Figure 3 yes Figure 2 An axial sectional view of the structure shown. Figure 4 This is a schematic diagram of the mixing vessel of a concentrated liquid dilution concentration detection device according to an embodiment of the present invention; Figure 5A schematic diagram of the filter mechanism, inlet pipe and upper pipe connection of a concentrated liquid dilution concentration detection device according to an embodiment of the present invention; Figure 6 A schematic diagram of the connection between the lower tube and the outlet cone of a concentrate dilution concentration detection device according to an embodiment of the present invention; Figure 7 A schematic diagram of the filter mechanism of a concentrate dilution concentration detection device according to an embodiment of the present invention in a split state; Figure 8 A partial cross-sectional view of the filter element in the filtration mechanism of a concentrate dilution concentration detection device according to an embodiment of the present invention; Figure 9 An axial structural cross-sectional view of the filter mechanism, inlet pipe, and upper pipe connection of a concentrated liquid dilution concentration detection device according to an embodiment of the present invention. Figure 10 A schematic diagram of the reciprocating pumping titration mechanism, liquid outlet pipe, air extraction hose and titration cylinder connection of a concentrated liquid dilution concentration detection device according to an embodiment of the present invention. Figure 11 A schematic diagram of the structure of a concentrated solution dilution concentration detection device according to an embodiment of the present invention, showing the connection between the titration cylinder and the partially cut-out reciprocating pumping titration mechanism.

[0024] Explanation of reference numerals in the attached figures 100-Dilution mixing mechanism; 101-Upper vessel body; 102-Upper insert sleeve; 103-Evacuation connector; 104-Upper tube body; 105-Upper connecting lug; 106-Lower vessel body; 107-Lower insert sleeve; 108-Lower tube body; 109-Vertical slot; 110-Vertical insert; 111-Conical disc; 112-Drainage chamber; 113-Drainage hole; 114-Disturbance blade; 115-Transfer pipe; 116-Drive wheel; 117-Lower connecting lug; 118-First vertical drive component; 119-Fixed edge; 200-Inlet pipe; 300-Filtering mechanism; 301-Assembly cylinder; 302-Restriction strip; 303-Filter element body; 304-Assembly ring; 305-Restriction port; 306-Connecting cover; 307-Adjusting sleeve; 308-Adapter seat; 309-Adapter ear; 310-Vertical restriction rod; 400 - Discharge pipe; 401 - First control valve; 402 - Adapter; 500 - Suction hose; 501 - Second control valve; 600-Reciprocating pump-dispensing titration mechanism; 601-Vertical detection cylinder; 602-Piston body; 603-Piston rod; 604-Operating handwheel; 605-Adapter plate; 606-Assembly ear; 607-Second vertical drive component; 608-First scale mark; 609-Medium inlet pipe; 610-First check valve; 611-Medium outlet pipe; 612-Second check valve; 613-Mixing blade; 700 - Burette; 701 - Vertical cylinder; 702 - Second graduation mark; 703 - Burette; 704 - Opening and closing valve. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] See Figure 1 As shown, a concentrated solution dilution concentration detection device according to the present invention is used for a hydraulic support, including a dilution mixing mechanism 100, a filtration mechanism 300, an inlet pipe 200, a reciprocating pumping titration mechanism 600, an outlet pipe 400, and a suction hose 500. The lower end of the dilution mixing mechanism 100 is fixed on a mounting frame, the filtration mechanism 300 is installed on the upper end of the dilution mixing mechanism 100, and the top end of the filtration mechanism 300 is connected to the inlet pipe 200. The reciprocating pumping titration mechanism 600 is provided outside the dilution mixing mechanism 100. The outlet end of the dilution mixing mechanism 100 is connected to the inlet end of the reciprocating pumping titration mechanism 600 through the outlet pipe 400, and the suction end of the dilution mixing mechanism 100 is connected to the inlet end of the reciprocating pumping titration mechanism 600 through the suction hose 500. A main switch valve is provided at the inlet of the inlet pipe 200. When the inlet pipe 200 and outlet pipe 400 are closed and the vacuum hose 500 is open, the reciprocating pumping titration mechanism 600 is used to evacuate the dilution mixing mechanism 100; when the outlet pipe 400 is open and the vacuum hose 500 is closed, the reciprocating pumping titration mechanism 600 is used to unidirectionally draw the concentrated liquid to be tested into the reciprocating pumping titration mechanism 600 in a predetermined amount for titration testing.

[0027] In the above embodiments, the working methods of the concentrate dilution concentration detection device are divided into the following two types.

[0028] The first method of use: To test the concentrated solution in its diluted state during use, firstly, the diluted concentrated solution is introduced into the dilution mixing mechanism 100 through the inlet pipe 200 and the filter mechanism 300. The filter mechanism 300 is used to filter out impurities in the diluted concentrated solution. Then, the outlet pipe 400 is closed and the vacuum hose 500 is opened. The reciprocating pumping titration mechanism 600 is then activated to create a vacuum in the dilution mixing mechanism 100 through the vacuum hose 500, thus evacuating the dilution mixing mechanism 100. Air bubbles in the liquid are quickly removed to prevent deviations in subsequent test data. Then, the outlet pipe 400 is opened and the suction hose 500 is closed. The reciprocating pumping titration mechanism 600 is then controlled to enter the reciprocating pumping titration mechanism 600 in a predetermined amount. The titrant is then gradually added to the reciprocating pumping titration mechanism 600 until a color change occurs. Finally, the concentration is calculated based on the volume of titrant consumed to determine whether the concentration of the diluted concentrate is within the predetermined range.

[0029] The second method of use: Add the concentrate to be diluted to the dilution mixing mechanism 100, then add the diluent to the dilution mixing mechanism 100. During the mixing process, close the outlet pipe 400 and open the vacuum hose 500. Then control the reciprocating pumping titration mechanism 600 to create a vacuum in the dilution mixing mechanism 100 through the vacuum hose 500, the purpose of which is to remove air bubbles. After the two liquids are fully mixed, open the outlet pipe 400 and close the vacuum hose 500. Then control the reciprocating pumping titration mechanism 600 to continue mixing. The diluted concentrate is introduced into the reciprocating pump-displacement titration unit 600 in a predetermined amount. Then, the titrant is gradually added to the unit until a color change occurs. Finally, the concentration is calculated based on the volume of titrant consumed to determine if the diluted concentrate meets the required concentration. If not, the concentrate or diluent can be added to the dilution mixing unit 100 and mixed again. Afterward, the measured liquid in the reciprocating pump-displacement titration unit 600 is discharged for the next test. When the measured concentration reaches the predetermined value, the desired concentration of concentrate has been obtained. Compared to directly mixing two liquid phases according to a predetermined ratio, this method is more accurate and can provide data support for the subsequent dilution of large quantities of concentrate. That is, large quantities can be prepared by mixing according to the corresponding ratio or a multiple of that ratio. After preparation, samples can be taken and supplied to the reciprocating pumping titration mechanism 600 for titration tests to determine whether the concentration of the diluted concentrate has reached the predetermined range. If it exceeds the predetermined range, the concentration of the diluted concentrate can be corrected by adding concentrate or diluent in a timely manner.

[0030] In summary, by incorporating a filtration mechanism, impurities in the diluted concentrate are effectively removed, improving its purity. The reciprocating pump-displacement titration mechanism is used to vacuum the dilution and mixing mechanism, effectively removing air bubbles and preventing deviations in subsequent test data. Titration using this mechanism allows for accurate determination of the diluted concentrate's concentration, or by sampling and testing to dilute the concentrate to a predetermined concentration, thus obtaining the desired diluted solution. This ensures the diluted concentrate possesses excellent lubrication, sealing, and pressure transmission efficiency, reducing failure rates and preventing unplanned downtime of the hydraulic support.

[0031] See Figures 2 to 6 As shown, in a preferred embodiment of the present invention, the dilution mixing mechanism 100 includes a mixing vessel, a central vertical pipe, and a liquid outlet cone. The central vertical pipe extends into the interior of the mixing vessel, and its axis coincides with the axis of the mixing vessel. The upper end of the central vertical pipe is connected to the lower end of the filtration mechanism 300. A liquid outlet cone, connected to the lower end of the central vertical pipe, is located at the bottom of the internal chamber of the mixing vessel. The axes of the central vertical pipe coincide with those of the central vertical pipe, and the liquid outlet cone is connected to the inner cavity of the mixing vessel. The bottom of the liquid outlet cone is connected to the liquid outlet pipe 400, and the air outlet at the top of the internal chamber of the mixing vessel is connected to the suction hose 500. Through the design of the above scheme, the mixing vessel, the central vertical pipe, and the liquid outlet cone are coaxially configured, avoiding the negative impact of eccentric force on the operation of the device.

[0032] In the above embodiments, see Figure 3 and Figure 6 As shown, the discharge cone includes a cone-shaped disc 111 with the smaller diameter end facing upwards. A discharge chamber 112 is formed inside the cone-shaped disc 111, and the upper end of the discharge chamber 112 is connected to the lower end of the central vertical pipe. Multiple discharge holes 113 are evenly distributed on the upper surface of the cone-shaped disc 111, and each discharge hole 113 connects the discharge chamber 112 to the inner cavity of the mixing vessel. The working principle and advantages of this embodiment are as follows: During the dilution of the concentrate, after a predetermined amount of concentrate is added to the mixing vessel, a diluent is added to the mixing vessel. During this process, the diluent enters the discharge chamber 112 of the cone-shaped disc 111 of the discharge cone through the central vertical pipe, and then is jetted and discharged into the inner cavity of the mixing vessel through all the discharge holes 113. Under the action of these water flows, the mixing efficiency of the diluent and the concentrate is improved.

[0033] In the above embodiments, such as Figure 6As shown, to further improve mixing efficiency and promote the rapid detachment of air bubbles in the liquid within the mixing vessel cavity, multiple agitator blades 114 are constructed on the upper surface of the conical disc 111. These blades are evenly spaced along the circumference of the conical disc 111. A connecting pipe 115 is coaxially connected to the lower end of the conical disc 111. The lower end of the connecting pipe 115 extends vertically downwards from the lower end of the bottom wall of the mixing vessel and is rotatably connected to the bottom wall. A drive wheel 116 is coaxially mounted on the lower outer wall of the connecting pipe 115. The upper end of the central vertical pipe is rotatably connected to the mixing vessel via a rolling bearing. Preferably, the agitator blades 114 extend involutely on the conical surface of the conical disc 111. This arrangement significantly improves the uniformity of the agitation of the liquid by the agitator blades 114. In this embodiment, the drive transmission wheel 116 rotates, causing it to rotate the conical disc 111 via the adapter pipe 115. This causes multiple streams of diluent ejected from the conical disc 111 to enter the concentrate in a rotating manner along the axis of the conical disc 111. At the same time, the agitator blades 114 continuously agitate the liquid in the mixing vessel, ensuring thorough mixing of the concentrate and diluent. Furthermore, under negative pressure, the bubbles can quickly detach under the influence of the agitated liquid, improving the accuracy of subsequent detection.

[0034] See Figures 2 to 6 As shown, in a preferred embodiment of the present invention, the mixing vessel includes an upper vessel body 101 and a lower vessel body 106, which are arranged vertically opposite each other. An exhaust connector 103 communicating with the inner cavity of the mixing vessel is constructed on the upper outer wall of the upper vessel body 101, and this exhaust connector 103 is detachably connected to one end of an exhaust hose 500. A fixing edge 119 is constructed at the lower outer edge of the lower vessel body 106, and this fixing edge 119 is detachably connected to a mounting bracket. An upper insertion sleeve 102 is constructed at the end of the upper vessel body 101 near the lower vessel body 106, and a lower insertion sleeve 107 is constructed at the end of the lower vessel body 106 near the upper vessel body 101. The inner diameter of the upper insertion sleeve 102 is larger than the outer diameter of the lower insertion sleeve 107. The upper insertion sleeve 102 and the lower insertion sleeve 107 are interlocked. The outer walls of the upper vessel body 101 and the lower vessel body 106 are connected by a first vertical drive member 118. By providing an air extraction connector 103, a quick connection between the inner cavity of the upper vessel body 101 and the air extraction hose 500 is achieved, reducing assembly difficulty. By interlocking the upper insertion sleeve 102 and the lower insertion sleeve 107, and by driving them closer or further apart using the first vertical drive member 118, the inner volume of the mixing vessel can be adjusted, meeting the needs of capacity changes under different conditions.

[0035] In the above embodiment, preferably, the first vertical drive member 118 is any one of an electric push rod, a hydraulic cylinder, or a pneumatic cylinder, and there are two of them. Two upper connecting ears 105 are welded or integrally formed symmetrically on the outer peripheral wall of the upper vessel body 101, and two lower connecting ears 117 are welded or integrally formed symmetrically on the outer peripheral wall of the lower vessel body 106. The telescopic end of each first vertical drive member 118 is connected to the upper connecting ear 105, and the fixed end of each first vertical drive member 118 is connected to the lower connecting ear 117. This configuration significantly reduces the manufacturing cost of the first vertical drive member 118. By using the connection method of upper connecting ears 105 and lower connecting ears 117, the cost of mold opening or turning of the upper vessel body 101 and the lower vessel body 106 is significantly reduced.

[0036] See Figure 3 , Figure 5 and Figure 6 As shown, in a preferred embodiment of the present invention, the central vertical tube includes an upper tube body 104 and a lower tube body 108. Two concave vertical slots 109 are symmetrically constructed on the outer peripheral wall of the upper tube body 104, each extending from the lower end of the upper tube body 104 along its length. Two outwardly protruding vertical inserts 110 are symmetrically constructed on the inner peripheral wall of the lower tube body 108, each extending from the upper end of the lower tube body 108 along its length. The upper tube body 104 is movably inserted into the lower tube body 108, and the vertical inserts 110 are inserted into the corresponding vertical slots 109. By providing the vertical slots 109 and the vertical inserts 110, they work together to achieve a good limiting effect, jointly forming a limiting structure that restricts the mutual rotation of the upper tube body 104 and the lower tube body 108, thus realizing the synchronous rotation of the upper tube body 104 and the lower tube body 108.

[0037] In the above embodiment, the end of the upper tube 104 away from the lower tube 108 is connected to the lower end of the filtration mechanism 300, and the end of the lower tube 108 away from the upper tube 104 is connected to the upper end of the liquid outlet cone.

[0038] The working principle and advantages of the above-described embodiment are as follows: By using the interlocking upper and lower insert cylinders 102 and 107, the volume of the mixing vessel can be adjusted according to the required proportions to prepare a predetermined amount of diluted concentrate. The volume of the mixing vessel can also be adjusted during the mixing of the concentrate and diluent to improve the turbulence effect and bubble removal effect of the outlet cone. Specifically, the two first vertical drive members 118 are controlled to extend and retract synchronously, causing them to drive the upper vessel body 101 to move vertically upwards. Simultaneously, the position of the upper insert cylinder 102 inserted into the lower insert cylinder 107 is adjusted, and the position of the upper tube 104 inserted into the lower tube 108 is also adjusted. While adjusting the volume of the mixing vessel, the liquid does not affect its entry into the inner cavity of the mixing vessel through the central vertical pipe and the outlet cone.

[0039] See Figures 7 to 9 As shown, in a preferred embodiment of the present invention, the filtration mechanism 300 includes an assembly cylinder 301, a connecting cover 306, and multiple filter elements. The lower end of the assembly cylinder 301 is connected to the upper end of the central vertical pipe of the dilution mixing mechanism 100. Multiple filter elements are sequentially arranged vertically within the internal chamber of the assembly cylinder 301. The connecting cover 306 is detachably installed at the upper end of the assembly cylinder 301 using a threaded connection. The lower end of the inlet pipe 200 is connected to the upper end of the connecting cover 306, and the inlet pipe 200 communicates with the internal chamber of the assembly cylinder 301. When testing the diluted concentrate in use, the liquid is supplied into the mixing vessel through the inlet pipe 200. During this process, the liquid flows through each filter element, which performs multi-stage filtration of impurities in the liquid, improving the filtration effect and preventing impurities from affecting the accuracy of the test data.

[0040] In the above embodiment, the filter element includes a filter element body 303, the middle of which protrudes upward. An assembly ring 304 is constructed on the outer periphery of the filter element body 303. The assembly rings 304 of adjacent filter elements abut against each other, and a flow-through area is formed between adjacent filter element bodies 303. Two protruding limiting strips 302 are symmetrically constructed on the inner peripheral wall of the assembly cylinder 301. Each limiting strip 302 extends vertically along the length of the assembly cylinder 301. Two concave limiting openings 305 are symmetrically opened on the outer periphery of the assembly ring 304. Each limiting opening 305 extends along the length of the assembly ring 304. When the filter element is assembled in the assembly cylinder 301, the limiting strips 302 and the corresponding limiting openings 305 are inserted and fitted together to form an anti-rotation structure. In this embodiment, because the middle of the filter element body 303 bulges upward, during the filtration process, the filtered impurities gradually gather towards the outer edge of the filter element body 303. The middle of the filter element body 303 can remain in a filtrate state for a longer period, thereby improving the service life of the filter element and preventing impurities from clogging the filter element body 303 in a short time. This embodiment allows for increasing or decreasing the number of filter elements within the assembly cylinder 301, ensuring smooth liquid flow through the assembly cylinder 301 while maintaining filtration effectiveness.

[0041] In the above embodiment, an adjusting sleeve 307 is fitted around the outer periphery of the inlet pipe 200. The adjusting sleeve 307 is threadedly connected to the outer wall of the inlet pipe 200. An adapter seat 308 is rotatably connected to the adjusting sleeve 307. Two adapter ears 309 are symmetrically constructed on the adapter seat 308. A vertical limiting rod 310 is fixed to the lower end of each adapter ear 309. Each vertical limiting rod 310 moves through and slides through the connecting cover 306, and the lower end of the vertical limiting rod 310 abuts against the edge of the uppermost filter element. When adding or removing filter elements, rotating the adjusting sleeve 307 presses it against the adapter seat 308, causing the two vertical limiting rods 310 to move vertically until the lower end of the vertical limiting rod 310 is tightly abutting against the edge of the uppermost filter element. This prevents the filter element from floating up and down during filtration, thus avoiding affecting the filtration effect.

[0042] See Figures 10 to 11 As shown, in a preferred embodiment of the present invention, the reciprocating pumping titration mechanism 600 includes a vertical detection cylinder 601, a piston body 602, a piston rod 603, and a second vertical drive member 607. The piston body 602 is coaxially disposed within and slidably connected to the vertical detection cylinder 601. The piston rod 603 is coaxially connected to the lower end of the piston body 602, and its lower end extends out of the vertical detection cylinder 601 and is connected to an adapter plate 605. The adapter plate 605 is connected to a mounting lug 606 protruding from the outer peripheral wall of the vertical detection cylinder 601 via the second vertical drive member 607.

[0043] In the above embodiments, preferably, the second vertical drive member 607 is any one of an electric push rod, a hydraulic cylinder, or a pneumatic cylinder.

[0044] In the above embodiments, preferably, the vertical detection cylinder 601 is a cylindrical structure made of transparent material, and a first scale mark 608 is constructed on the outer peripheral wall of the vertical detection cylinder 601 for directly reading the volume of the liquid inside the vertical detection cylinder 601.

[0045] In the above embodiment, the upper end of the vertical detection cylinder 601 is connected to a medium inlet pipe 609 and a medium outlet pipe 611. A first check valve 610 is installed on the medium inlet pipe 609, and a second check valve 612 is installed on the medium outlet pipe 611. A first control valve 401 is installed on the liquid outlet pipe 400, and an adapter 402 is constructed at one end of the liquid outlet pipe 400. The adapter 402 is rotatably connected to the end of the adapter pipe 115, and a second control valve 501 is installed on the suction hose 500.

[0046] The above implementation method has the following two functions.

[0047] The first function is to evacuate the mixing vessel. Specifically, the first control valve 401 is closed and the second control valve 501 is opened. This controls the second vertical drive component 607 to extend and retract, driving the adapter plate 605 to reciprocate vertically. The adapter plate 605, through the piston rod 603, drives the piston body 602 to reciprocate. During the downward movement of the piston body 602, the first one-way valve 610 opens and the second one-way valve 612 closes, drawing gas from the mixing vessel into the vertical detection cylinder 601. During the upward movement of the piston body 602, the first one-way valve 610 closes and the second one-way valve 612 opens, expelling gas from the vertical detection cylinder 601 through the medium discharge pipe 611. This process repeats, gradually increasing the vacuum level inside the mixing vessel, causing air bubbles in the liquid to rapidly detach under negative pressure.

[0048] The second function is to test the diluted concentrate. Specifically, the first control valve 401 is opened and the second control valve 501 is closed. This controls the second vertical drive component 607 to extend and retract, driving the adapter plate 605 to reciprocate vertically. During the reciprocating motion of the piston body 602, the liquid in the mixing vessel is gradually drawn into the vertical detection cylinder 601, and the volume of the liquid to be tested is determined according to the first scale mark 608. Afterwards, a titration operation is performed until the color of the liquid to be tested changes abruptly.

[0049] See Figure 11As shown, in a preferred embodiment of the present invention, the upper end of the vertical detection cylinder 601 is connected to a burette 700. The burette 700 includes a vertical cylinder 701, which is a transparent cylindrical structure with its upper end open. A second graduation mark 702 is constructed on the outer peripheral wall of the vertical cylinder 701 for directly reading the volume of the titrant inside the vertical cylinder 701. The lower end of the vertical cylinder 701 is connected to the vertical detection cylinder 601 via a burette 703. An on / off valve 704 is installed on the burette 703. By opening the on / off valve 704, the titrant gradually enters the vertical detection cylinder 601. The second graduation mark 702 is observed to ensure that the titrant enters according to a predetermined amount. Afterward, the on / off valve 704 is closed.

[0050] In the above embodiment, to improve the mixing efficiency of the titrant and the liquid to be tested, the following measures are taken: the piston rod 603 is rotatably connected to the adapter plate 605; an operating handwheel 604 is installed on the piston rod 603; and multiple mixing blades 613 are constructed at the upper end of the piston body 602. The mixing blades 613 are preferably trapezoidal in shape, and the longer base of each mixing blade 613 is located at the center of the piston body 602. During titration, rotating the operating handwheel 604 causes the piston rod 603 to rotate the piston body 602 within the vertical detection cylinder 601. The mixing blades 613 agitate the liquid within the vertical detection cylinder 601, promoting the mixing of the titrant and the liquid to be tested.

[0051] In the description of this invention, the terms "first," "second," "front," "rear," "upper," and "lower" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A device for detecting the concentration of a concentrated solution during dilution, characterized in that, It includes a dilution mixing mechanism (100) and a filtration mechanism (300) installed on its upper end. The top of the filtration mechanism (300) is connected to a liquid inlet pipe (200). A reciprocating pumping titration mechanism (600) is provided outside the dilution mixing mechanism (100). The liquid outlet of the dilution mixing mechanism (100) is connected to the inlet of the reciprocating pumping titration mechanism (600) through a liquid outlet pipe (400). The air extraction end of the dilution mixing mechanism (100) is connected to the inlet of the reciprocating pumping titration mechanism (600) through an air extraction hose (500). When the inlet pipe (200) and the outlet pipe (400) are closed and the vacuum hose (500) is open, the reciprocating pumping titration mechanism (600) is used to evacuate the dilution mixing mechanism (100). When the outlet pipe (400) is in the open state and the suction hose (500) is in the closed state, the reciprocating suction and discharge titration mechanism (600) is used to unidirectionally draw the concentrate to be tested into the reciprocating suction and discharge titration mechanism (600) in a predetermined amount for titration testing.

2. The concentrated solution dilution concentration detection device according to claim 1, characterized in that, The dilution mixing mechanism (100) includes a mixing vessel and a central vertical pipe extending into the internal chamber of the mixing vessel. The upper end of the central vertical pipe is connected to the filtration mechanism (300). The bottom of the internal chamber of the mixing vessel is provided with a liquid outlet cone plate connected to it. The bottom of the liquid outlet cone plate is connected to the liquid outlet pipe (400). The air outlet at the top of the internal chamber of the mixing vessel is connected to the air extraction hose (500).

3. The concentrated solution dilution concentration detection device according to claim 2, characterized in that, The discharge cone includes a cone-shaped disc (111) with the small end facing upward. The interior of the cone-shaped disc (111) forms a discharge chamber (112) that communicates with the central vertical pipe. The cone-shaped disc (111) has multiple discharge holes (113) that communicate with the internal chamber of the mixing vessel.

4. The concentrated solution dilution concentration detection device according to claim 3, characterized in that, The conical disc (111) has multiple disturbance blades (114) spaced around its circumference on its outer surface. A transfer pipe (115) is connected to the center of the lower end of the conical disc (111) and extends out and is rotatably connected to the bottom wall of the mixing vessel. A transmission wheel (116) is provided on the outer wall of the transfer pipe (115) to drive its rotation. The upper end of the central vertical pipe is rotatably connected to the mixing vessel.

5. The concentrated solution dilution concentration detection device according to claim 2, characterized in that, The mixing vessel includes an upper vessel body (101) and a lower vessel body (106) arranged opposite to each other and interlocked. The outer walls of the upper vessel body (101) and the lower vessel body (106) are connected by a first vertical drive member (118) for driving them closer or further apart.

6. The concentrated solution dilution concentration detection device according to claim 2, characterized in that, The central vertical tube includes an upper tube (104) and a lower tube (108) that are interlocked and rotate synchronously. The upper end of the upper tube (104) is connected to the filtration mechanism (300), and the lower tube (108) is connected to the top of the liquid outlet cone.

7. The concentrated solution dilution concentration detection device according to claim 1, characterized in that, The filtration mechanism (300) includes an assembly cylinder (301) connected to the upper end of the dilution mixing mechanism (100). The internal chamber of the assembly cylinder (301) is provided with a plurality of filter elements from top to bottom. The top open end of the assembly cylinder (301) is detachably connected with a connecting cap (306).

8. The concentrated solution dilution concentration detection device according to claim 7, characterized in that, The filter element includes a filter element body (303) that protrudes upward in the middle. An assembly ring (304) is formed on the outer periphery of the filter element body (303). The assembly rings (304) of adjacent filter element bodies (303) abut against each other. A flow-through area is formed between adjacent filter element bodies (303). An anti-rotation structure is provided at the connection between the assembly ring (304) and the inner wall of the assembly cylinder (301).

9. The concentrated solution dilution concentration detection device according to claim 7, characterized in that, An adjusting sleeve (307) is fitted and threaded onto the outer periphery of the inlet pipe (200). An adapter (308) is rotatably connected to the outer periphery of the adjusting sleeve (307). A vertical limiting rod (310) is slidably inserted into the connecting cover (306) at the outer end of the adapter (308). The lower end of the vertical limiting rod (310) abuts against the edge of the uppermost filter element for pressing.

10. The concentrated solution dilution concentration detection device according to claim 1, characterized in that, The reciprocating pumping titration mechanism (600) includes a vertical detection cylinder (601) and a piston body (602) slidably connected to its internal chamber. The lower end of the piston body (602) is connected to a piston rod (603) extending outside the vertical detection cylinder (601). The lower end of the piston rod (603) is connected to an adapter plate (605). The adapter plate (605) is connected to the outer wall of the vertical detection cylinder (601) through a retractable second vertical drive member (607). The top of the vertical detection cylinder (601) is provided with a medium inlet pipe (609) and a medium outlet pipe (611) communicating with its internal chamber. A first one-way valve (610) is installed on the medium inlet pipe (609), and a second one-way valve (612) is installed on the medium outlet pipe (611).

11. The concentrated solution dilution concentration detection device according to claim 10, characterized in that, The piston rod (603) is rotatably connected to the adapter plate (605). An operating handwheel (604) is installed on the piston rod (603). The upper surface of the piston body (602) is provided with a plurality of mixing blades (613) for agitating the liquid in the vertical detection cylinder (601).

12. The concentrated solution dilution concentration detection device according to claim 10, characterized in that, The top of the vertical detection cylinder (601) is connected to a burette (700), which includes a vertical cylinder (701) with an open top. The bottom of the vertical cylinder (701) is connected to the vertical detection cylinder (601) through a burette (703), and an on / off valve (704) is installed on the burette (703).

13. A method for detecting the concentration of a concentrated solution after dilution, characterized in that, Includes the following steps: Step S100. The concentrated liquid to be tested is introduced into the dilution and mixing mechanism (100) through the inlet pipe (200) and the filtration mechanism (300); Step S200. Close the liquid outlet pipe (400) and open the vacuum hose (500), then control the reciprocating pumping titration mechanism (600) to evacuate the dilution mixing mechanism (100) through the vacuum hose (500); Step S300. Open the liquid outlet pipe (400) and close the suction hose (500), then control the reciprocating pumping titration mechanism (600) to make the diluted concentrate enter the reciprocating pumping titration mechanism (600) in a predetermined amount; Step S400. Gradually add the titrant into the reciprocating pumping titration mechanism (600) until the color changes abruptly. Step S500. Calculate the concentration of the concentrate to be tested based on the volume of titrant consumed.

14. The method for detecting the concentration of a concentrated solution according to claim 13, characterized in that, It also includes step S600. Determine whether the concentrate to be tested is a diluted concentrate of the required concentration. If not, continue to add the concentrate or diluent to the dilution mixing mechanism (100) and mix again. Then, discharge the measured liquid in the reciprocating pumping titration mechanism (600) and repeat steps S200 to S500 until the diluted concentrate reaches the required concentration.

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