Automatic paper pH measuring instrument

Abstract

The utility model discloses a kind of paper pH automatic measuring instrument, it is related to pH measurement equipment technical field, including mainframe pedestal, heating container component, refrigeration container component, paper shredder, paper outlet guide frame, liquid extraction component and pH detection component.In the utility model, the paper to be measured is put into paper shredder to carry out paper shredding treatment, heating container component carries out heating treatment to paper shredding and water liquid, forms hot water extraction of the paper to be measured;Liquid extraction component extracts and conveys paper water extraction in heating container component into refrigeration container component, then immediately carries out pH detection to hot water extraction;Refrigeration container component carries out refrigeration cooling treatment to hot water extraction, obtains cold water extraction of the paper to be measured, now carries out pH detection to cold water extraction of the paper to be measured;The utility model can be disposable to realize the paper shredding of the paper to be measured, heating water extraction, pH detection of hot water extraction, refrigeration cooling and cold water extraction pH detection work.

Description

Technical Field

[0001] This utility model relates to the field of pH measurement equipment technology, specifically to an automatic pH measuring instrument for paper. Background Technology

[0002] When testing the pH value of paper, it is generally necessary to follow the method for pH determination of aqueous extracts in the national standard GB / T-1545-2008. The method for pH determination of aqueous extracts is GB / T1545 (the current version is GB / T1545-2008). The scope of application is the detection of acidity or alkalinity (pH value) of aqueous extracts of paper, paperboard and pulp. The principle of the method is as follows: the sample is cut into pieces, extracted with hot water (95℃±2℃) or cold water and then filtered. The acidity or alkalinity of the solution is measured with a pH meter.

[0003] However, existing automatic pH measuring instruments are not very suitable for detecting the pH value of paper and cannot perform hot and cold extraction operations in the pH value measurement of paper.

[0004] For example, the patent (CN221558563U) has the above-mentioned problems; it describes "a benchtop pH meter, including a cabinet (10), a rectangular groove (21), a rectangular groove is provided on the end face of the cabinet, a detection cylinder is provided on one side of the rectangular groove, a mounting frame is provided on the upper end face of the detection cylinder, a detection rod is slidably provided at the center of the mounting frame, a detection unit is connected to the top of the detection rod on the side wall of the rectangular groove, a stirring component is provided below the detection rod in the detection cylinder, a liquid storage tank is provided on one side of the detection cylinder in the rectangular groove, and a grinding component is provided on the upper end face of the liquid storage tank. This utility model, through the design of the grinding component, the detection cylinder and the stirring component, enables the drug or food to be initially mixed with the reaction liquid during the automatic crushing process. With sufficient mixing before detection, all positions in contact with the material can be automatically cleaned after detection, effectively avoiding the possibility of cross-contamination of materials and ensuring detection accuracy"; however, the method of using a grinding component to crush the drug or food, and then mixing it with the reaction liquid for pH value detection, does not have the technical requirements of heating or cold extraction, and cannot The paper's pH value needs to be tested; the same problem exists in patent (CN219994839U); it describes "an automatic pH value measuring instrument, including a main base, an automatic lifting pH value measuring instrument body is provided at the top center of the main base, and the automatic lifting pH value measuring instrument body includes a transmission screw rotatably mounted on the top surface of the main base, a limit slide rod is fixedly installed on one side of the transmission screw, and a lifting platform is movably mounted on the transmission screw and the limit slide rod, while the main instrument body is clamped on the front side of the lifting platform, and the bottom end of the transmission screw is fixed..." The device is equipped with a stepper motor, which is bolted to the inside of the main unit. The automatic lifting pH meter body utilizes a transmission screw, limit slide, lifting platform, and stepper motor combined with the screw drive principle to automatically raise and lower the main unit, achieving automatic measurement. This significantly reduces the workload of staff, saving time and effort, and greatly improving pH measurement efficiency. However, it only measures the pH of the sample in the measuring vessel and does not involve heating or cold extraction, thus failing to meet the requirements for pH testing of paper.

[0005] To address the limitations of existing automatic pH measuring instruments in detecting paper pH values ​​and their inability to perform hot and cold extraction operations in paper pH measurement, we propose an automatic pH measuring instrument for paper. Utility Model Content

[0006] The purpose of this invention is to provide an automatic pH measuring instrument for paper to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an automatic paper pH measuring instrument, including a main unit base, a heating container assembly and a cooling container assembly are provided on one side of the top of the main unit base, a shredder is provided on the other side of the top of the main unit base, a paper feed guide is inclinedly provided on one side of the outer wall of the shredder above the heating container assembly, a liquid extraction assembly and a pH detection assembly are provided on the outer wall of the shredder on the side of the paper feed guide, and the pH probe of the pH detection assembly is located above the cooling container assembly.

[0008] Furthermore, the liquid extraction assembly is located between the paper feed guide and the pH detection assembly. The liquid extraction assembly includes a water pump, the inlet of which is connected to an inlet hose, and the outlet of which is connected to an outlet hose.

[0009] Furthermore, the heating container assembly includes a heating container and a heating base. The heating base is vertically disposed inside the main unit base. The top of the main unit base has a first through groove that matches the heating container above the heating base, and a temperature control probe is disposed inside the heating container.

[0010] Furthermore, the refrigeration container assembly includes a refrigeration container and a refrigeration base. The refrigeration base is vertically disposed inside the main unit base, and a second through groove matching the refrigeration container is formed on the top of the main unit base above the refrigeration base.

[0011] Furthermore, the pH detection assembly also includes a lifting adjustment mechanism, the output end of which extends to the top of the refrigeration container assembly and is fixedly connected to the pH probe.

[0012] Furthermore, the lifting adjustment mechanism is a screw lifting mechanism, and the outer wall of the screw nut of the screw lifting mechanism is provided with a connecting frame. The screw lifting mechanism is provided with a vertical sliding guide groove of the connecting frame, and the end of the connecting frame away from the sliding guide groove is fixedly connected to the pH probe.

[0013] Furthermore, the top of the shredder has a paper inlet window, and a shredding mechanism is provided inside the shredder below the paper inlet window. A receiving rack is inclined inside the shredder below the shredding mechanism. The paper output guide rack is fixedly connected to the receiving rack, and the paper output guide rack and the receiving rack are arranged parallel to each other.

[0014] Furthermore, the paper shredding mechanism includes a fixed blade disc and a rotating blade holder. The outer wall of the rotating blade holder is provided with a plurality of rotating blade discs, and the outer wall of the fixed blade disc is provided with blade grooves that match the rotating blade discs. The blades of two adjacent rotating blade discs are arranged in an alternating manner.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] 1. This utility model comprises a main unit, a heating container assembly, a cooling container assembly, a shredder, a paper feeder, a liquid extraction assembly, and a pH detection assembly. The paper to be tested is fed into the shredder for shredding. The shredded paper is then discharged from the paper feeder and falls directly into the heating container assembly. The heating container assembly heats the shredded paper and water to a specified temperature, forming a hot water extract of the paper to be tested. The liquid extraction assembly extracts the paper extract from the heating container assembly and transfers it to the cooling container assembly, where the pH value is immediately measured. The cooling container assembly then cools the hot water extract to obtain a cold water extract of the paper to be tested. The pH value of the cold water extract is then measured. This utility model can simultaneously perform the shredding, heating, hot water extraction, pH value detection of the hot water extract, cooling, and pH value detection of the cold water extract.

[0017] 2. In this utility model, a heating container assembly is provided, including a heating container and a heating base, and a cooling container assembly is provided, including a cooling container and a cooling base. The heating container is used to hold the shredded paper to be tested and the liquid. The heating container can be placed directly on top of the heating base through the first channel. The heating base heats the liquid and the shredded paper to be tested through the heating container. The temperature control probe detects the temperature of the liquid inside the heating container and provides the heating base with the temperature conditions for opening and closing, so that the heating base stops heating when the liquid temperature reaches the specified temperature. The cooling container is used to hold the water extract of the shredded paper to be tested. The cooling container can be placed directly on top of the cooling base through the second channel. The cooling base cools the water extract of the shredded paper to be tested through the cooling container. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the top of the integral shredder of this utility model;

[0021] Figure 3 This is a utility model Figure 2 Another structural diagram from another angle;

[0022] Figure 4 This is a cross-sectional structural diagram of the entire utility model;

[0023] Figure 5 This is a utility model Figure 4 Side view;

[0024] In the diagram: 1. Main unit base; 2. Heating container assembly; 201. Heating container; 202. First through slot; 203. Temperature control probe; 3. Cooling container assembly; 301. Cooling container; 302. Second through slot; 4. Shredder box; 401. Paper inlet window; 402. Shredder mechanism; 403. Receiving rack; 404. Fixed cutter head; 405. Rotating cutter head; 406. Rotating cutter head; 407. Cutter groove; 5. Paper outlet guide rack; 6. Liquid extraction assembly; 601. Water pump; 602. Water inlet hose; 603. Water outlet hose; 7. pH detection assembly; 701. pH probe; 702. Lifting adjustment mechanism; 703. Screw nut; 704. Connecting frame; 705. Sliding guide groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figures 1-3 This utility model provides a technical solution: an automatic paper pH measuring instrument, including a main unit 1. A heating container assembly 2 and a cooling container assembly 3 are provided on one side of the top of the main unit 1. A shredder 4 is provided on the other side of the top of the main unit 1. A paper feed guide 5 is inclinedly provided on one side of the outer wall of the shredder 4 above the heating container assembly 2. A liquid extraction assembly 6 and a pH detection assembly 7 are provided on the outer wall of the shredder 4 on one side of the paper feed guide 5. The pH probe 701 of the pH detection assembly 7 is located above the cooling container assembly 3. The liquid extraction assembly 6 is located between the paper feed guide 5 and the pH detection assembly 7. The liquid extraction assembly 6 includes a water pump 601. The inlet of the water pump 601 is connected to an inlet hose 602, and the outlet of the water pump 601 is connected to an outlet hose 603. The pH detection assembly 7 also includes a lifting adjustment mechanism 702. The output end of the lifting adjustment mechanism 702 extends above the cooling container assembly 3 and is fixedly connected to the pH probe 701.

[0028] In one embodiment, the lifting adjustment mechanism 702 is a screw lifting mechanism. The outer wall of the screw nut 703 of the screw lifting mechanism is provided with a connecting frame 704. A sliding guide groove 705 is vertically provided on the connecting frame 704. The end of the connecting frame 704 away from the sliding guide groove 705 is fixedly connected to the pH probe 701. The lifting adjustment mechanism 702 can be a screw lifting mechanism, in which a motor drives the screw to rotate. The screw and screw nut 703 cooperate to drive the screw nut 703 to move up and down. The screw nut 703 drives the pH probe 701 to move up and down through the connecting frame 704. This allows the pH probe 701 to extend and retract within the refrigeration container assembly 3, facilitating pH value detection of the water extract inside the refrigeration container assembly 3. The sliding guide groove 705 provides vertical sliding guidance to the connecting frame 704, effectively ensuring that the screw nut 703 only moves up and down and does not rotate.

[0029] The working principle of this utility model:

[0030] Refer to the instruction manual appendix Figures 1-3 This utility model comprises a main unit base 1, a heating container assembly 2, a cooling container assembly 3, a shredder 4, a paper feed guide 5, a liquid extraction assembly 6, and a pH detection assembly 7. The main unit base 1 provides a supporting base for the equipment. The heating container assembly 2 provides a heating container and its supporting components for the paper to be tested. The cooling container assembly 3 provides a cooling container and its supporting components for the paper to be tested. The shredder 4 provides a shredding function for the paper to be tested. The paper feed guide 5 guides and conveys the shredded paper from the outlet of the shredder 4 to the heating container assembly 2 for heating. The liquid extraction assembly 6 is used to transfer the shredded paper to the heating container assembly 2 for heating. The hot water extract in the heating container assembly 2 is transported to the cooling container assembly 3. The pH detection assembly 7 can detect the pH value of the hot water extract before it is cooled down, at which time the pH value of the hot water extract of the paper is measured. The cooling container assembly 3 can cool down the hot water extract inside it (to 20-23℃) to obtain the cold water extract of the paper, and then detect the pH value of the cold water extract of the paper. This utility model can simultaneously detect the pH value of the hot water extract and the cold water extract of the paper, and can be used as a dedicated device for paper pH value detection.

[0031] When using the equipment, the paper to be tested is first placed into the shredder 4 for shredding. The shredded paper is discharged directly from the paper feeder 5 into the heating container assembly 2. Water that meets the testing standards has been pre-added to the heating container assembly 2. The shredded paper and water are mixed, and the heating container assembly 2 heats both the paper and water to a specified temperature, forming a hot water extract of the paper to be tested. Then, the extraction assembly 6 is activated to extract the paper water extract from the heating container assembly 2 and transport it to the cooling container assembly. In step 3, the pH value of the hot water extract in the refrigeration container assembly 3 is immediately measured to obtain the pH value of the hot water extract of the paper to be tested. Then, the refrigeration container assembly 3 is activated to cool down the hot water extract. After the water temperature of the hot water extract reaches the temperature standard of the cold water extract, the cold water extract of the paper to be tested is obtained. At this time, the pH value of the cold water extract of the paper to be tested is measured to obtain the pH value of the cold water extract of the paper to be tested. This utility model can realize the work of shredding the paper to be tested, heating water extraction, pH value detection of hot water extract, cooling and cooling, and pH value detection of cold water extract in one go.

[0032] The water pump 601 in the liquid extraction assembly 6 provides the power to pump water. The water pump 601 extracts the hot water extract from the paper to be tested through the water inlet hose 602, and delivers the extracted hot water extract from the paper to be tested to the refrigeration container assembly 3 through the water outlet hose 603. Both the water inlet and outlet of the water pump 601 are in the form of hoses, which facilitates the extraction of water and does not affect the cleaning of the containers in the heating container assembly 2 and the refrigeration container assembly 3. The lifting and adjusting mechanism 702 is used to adjust the height of the pH probe 701, so that the pH probe 701 can be inserted and extended in the refrigeration container assembly 3, which facilitates the pH value detection of the water extract to be tested inside the refrigeration container assembly 3.

[0033] A filter element can be arranged at the end of the inlet hose 602 located in the heating container assembly 2 to prevent shredded paper from entering the interior of the inlet hose 602 and to reduce the cleaning difficulty of the subsequent liquid extraction assembly 6. The connection between the inlet hose 602, the outlet hose 603 and the water pump 601 can be a fixed connection or a movable connection. When cleaning the residue in the water pump 601, the inlet hose 602 and the outlet hose 603, the residue can be discharged by manually starting the water pump 601 or by repeatedly rinsing with clean water.

[0034] Furthermore, the device in this invention can be used with a corresponding logic control system to enable automatic pH measurement of paper; the shredder 4 can use an induction start method or other existing start control methods for shredding the paper to be tested; the heating operation of the heating container assembly 2 for the water and shredded paper can be linked with the shredding operation of the shredder 4, using timing control logic. After the shredder 4 starts working for a specified time, the heating container assembly 2 starts heating, and the heating stops after the water in the heating container assembly 2 reaches a specified temperature; liquid extraction. The extraction and conveying operation of the hot water extract by component 6 can be linked with the control of the heating container component 2. After the water in the heating container component 2 is heated to the specified temperature, the extraction component 6 starts to extract and convey the water. The pH detection component 7 performs pH value detection on the paper water extract. The operation of the pH detection component 7 can be controlled in conjunction with the temperature. When the hot water extract or the cold water extract reaches the specified temperature, the pH detection component 7 performs pH value detection. The above control logic is the control logic commonly used in the prior art. It can be used after simple and conventional adjustments to the existing control system.

[0035] Example 2

[0036] Please see Figures 1-5 This utility model provides a technical solution: an automatic paper pH measuring instrument, wherein the heating container assembly 2 includes a heating container 201 and a heating base, the heating base is vertically disposed inside the main unit 1, the top of the main unit 1 has a first through groove 202 matching the heating container 201 above the heating base, and a temperature control probe 203 is disposed inside the heating container 201; the cooling container assembly 3 includes a cooling container 301 and a cooling base, the cooling base is vertically disposed inside the main unit 1, the top of the main unit 1 has a second through groove 302 matching the cooling container 301 above the cooling base; the shredder 4 has a paper inlet window 401 on its top, a shredding mechanism 402 is disposed inside the shredder 4 below the paper inlet window 401, a receiving rack 403 is disposed obliquely inside the shredder 4 below the shredding mechanism 402, and a paper output guide rack 5 is fixedly connected to the receiving rack 403, and the paper output guide rack 5 is arranged parallel to the receiving rack 403.

[0037] In one embodiment, the paper shredding mechanism 402 includes a fixed blade disc 404 and a rotating blade holder 405. The outer wall of the rotating blade holder 405 is provided with a plurality of rotating blade discs 406. The outer wall of the fixed blade disc 404 has blade grooves 407 that match the rotating blade discs 406. The blades of adjacent rotating blade discs 406 are staggered. The fixed blade disc 404 and the rotating blade holder 405 cooperate to form the paper shredding mechanism 402 to shred the paper to be tested. When the rotating blade holder 405 and the fixed blade disc 404 shred the paper, the rotating blade holder 405 is driven to rotate. This rotational drive can be a motor or other type of drive. 6. As the rotating blade holder 405 rotates, the rotating blade disc 406 continuously passes through the blade groove 407 on the fixed blade disc 404 during its rotation. The paper is shredded between the rotating blade disc 406 and the blade groove 407, and the shredded paper is simultaneously conveyed downwards, causing it to fall onto the receiving rack 403. By setting the blades of two adjacent rotating blade discs 406 in an alternating manner, the adjacent rotating blade discs 406 cut and shred the paper in an alternating state. The blade groove 407 of the rotating blade disc 406 and the fixed blade disc 404 always clamp and cut the paper, ensuring that the paper is conveyed downwards normally after being fed into the inner side of the shredding mechanism 402.

[0038] The working principle of this utility model:

[0039] Refer to the instruction manual appendix Figures 1-5 This utility model provides a heating container assembly 2, including a heating container 201 and a heating base, and a cooling container assembly 3, including a cooling container 301 and a cooling base. The heating container 201 in the heating container assembly 2 is used to hold the shredded paper to be tested and the water. The heating base heats the water and the shredded paper to be tested through the heating container 201. The top of the heating base can be set as a heating end. The first through slot 202 is provided on the top of the main unit 1 for placing the heating container 201. The heating container 201 can be placed directly on the top of the heating base through the first through slot 202. The heating base heats the water and the shredded paper to be tested through the heating container 201. The temperature control probe 203 detects the temperature of the water inside the heating container 201 and provides the heating base with the temperature conditions for opening and closing, so that the heating base stops heating when the water temperature reaches the specified temperature.

[0040] The refrigeration container 301 in the refrigeration container assembly 3 is used to hold the water extract of the shredded paper to be tested. The top of the refrigeration base can be set as a refrigeration heat exchange end. The second through slot 302 is set with an opening on the top of the main unit 1 for placing the refrigeration container 301. The refrigeration container 301 can be placed directly on the top of the refrigeration base through the second through slot 302. The refrigeration base uses the refrigeration container to exchange heat and cool down the water extract of the shredded paper to be tested. A temperature control probe can also be arranged inside the refrigeration container 301 to detect the water temperature inside the refrigeration container 301 and provide the refrigeration base with the temperature conditions for opening and closing, so that the refrigeration base stops working when the water temperature reaches the specified temperature.

[0041] The paper to be tested enters the shredder 4 through the paper inlet window 401. After passing through the paper inlet window 401, the paper directly enters the shredding mechanism 402 for shredding. After shredding, the paper falls and is received by the receiving rack 403. The receiving rack 403 guides the paper and conveys it to the output guide rack 5. After the paper is removed from the shredder 4 by the output guide rack 5, it falls into the heating container 201 of the heating container assembly 2 for heating. The operation is convenient and quick.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic pH measuring instrument for paper, comprising a main unit (1), characterized in that: The main unit (1) has a heating container assembly (2) and a cooling container assembly (3) on one side of its top. The main unit (1) has a shredder (4) on the other side of its top. The shredder (4) has a paper feeder (5) on one side of its outer wall above the heating container assembly (2). The shredder (4) has a liquid extraction assembly (6) and a pH detection assembly (7) on one side of its outer wall above the paper feeder (5). The pH probe (701) of the pH detection assembly (7) is located above the cooling container assembly (3).

2. The paper pH automatic measuring instrument according to claim 1, characterized in that: The liquid extraction assembly (6) is located between the paper feed guide (5) and the pH detection assembly (7). The liquid extraction assembly (6) includes a water pump (601), the inlet of which is connected to an inlet hose (602), and the outlet of which is connected to an outlet hose (603).

3. The paper pH automatic measuring instrument according to claim 1, characterized in that: The heating container assembly (2) includes a heating container (201) and a heating base. The heating base is vertically disposed inside the main unit (1). The top of the main unit (1) is provided with a first through groove (202) that matches the heating container (201) above the heating base. A temperature control probe (203) is provided inside the heating container (201).

4. The paper pH automatic measuring instrument according to claim 1, characterized in that: The refrigeration container assembly (3) includes a refrigeration container (301) and a refrigeration base. The refrigeration base is vertically disposed inside the main unit (1). The top of the main unit (1) is provided with a second through groove (302) that matches the refrigeration container (301).

5. The paper pH automatic measuring instrument according to claim 1, characterized in that: The pH detection component (7) also includes a lifting adjustment mechanism (702), the output end of which extends above the refrigeration container component (3) and is fixedly connected to the pH probe (701).

6. The paper pH automatic measuring instrument according to claim 5, characterized in that: The lifting adjustment mechanism (702) is a screw lifting mechanism. The outer wall of the screw nut (703) of the screw lifting mechanism is provided with a connecting frame (704). The screw lifting mechanism is provided with a sliding guide groove (705) of the connecting frame (704) vertically. The end of the connecting frame (704) away from the sliding guide groove (705) is fixedly connected to the pH probe (701).

7. The automatic pH measuring instrument for paper according to claim 1, characterized in that: The paper shredder (4) has a paper inlet window (401) on the top. The paper shredder (4) has a paper shredding mechanism (402) below the paper inlet window (401) inside the paper shredder (4). The paper receiving rack (403) is inclined below the paper shredding mechanism (402) inside the paper shredder (4). The paper output guide rack (5) is fixedly connected to the paper receiving rack (403), and the paper output guide rack (5) and the paper receiving rack (403) are arranged in parallel.

8. The paper pH automatic measuring instrument according to claim 7, characterized in that: The paper shredding mechanism (402) includes a fixed blade disc (404) and a rotating blade holder (405). The outer wall of the rotating blade holder (405) is provided with a plurality of rotating blade discs (406). The outer wall of the fixed blade disc (404) is provided with blade grooves (407) that match the rotating blade discs (406). The blades of two adjacent rotating blade discs (406) are staggered.

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