A laboratory universal titration device

Abstract

This utility model belongs to the technical field of titration apparatus, specifically disclosing a universal laboratory titration apparatus, including a housing. The housing contains an upper and a lower layer. The top of the upper layer houses a meter, a first reagent bottle, and a second reagent bottle. Two pump assemblies are symmetrically installed inside the upper layer, each equipped with a first tube assembly and a second tube assembly, which pass through their respective pump assemblies and are inserted into the first and second reagent bottles. The lower layer contains a glass measuring cup, below which is a stirring assembly. An electrode rod is installed inside the glass measuring cup. A terminal is located on the side of the housing. The meter is electrically connected to the electrode rod and the terminal. Real-time digital electrode monitoring avoids subjective errors associated with traditional manual interpretation. Different electrode rods can be replaced, making it suitable for various analytical scenarios such as acid-base titration, redox titration, and complexometric titration. An integrated magnetic stirring design ensures uniform reaction.

Description

Technical Field

[0001] This utility model relates to the field of titration apparatus technology, specifically a general-purpose laboratory titration apparatus. Background Technology

[0002] Titration analysis is a commonly used method in chemical analysis. It involves reacting a reagent (titrant) of known concentration with the analyte to determine its content. It has wide applications in scientific research, teaching, and quality control, such as in the food, pharmaceutical, and environmental testing industries.

[0003] Determining the titration endpoint relies on visual observation (such as indicator color change), which is easily affected by factors such as operator experience and lighting conditions, leading to poor repeatability. Manual control of the burette stopcock and dropwise addition of titrant is required, resulting in low efficiency and unsuitability for large-scale sample analysis. Therefore, to reduce human error and improve analytical efficiency, an automated titration device is needed.

[0004] However, most existing devices only support a single titration type, such as acid-base titration, making it difficult to use multiple different electrodes. This makes it difficult for the device to be adapted to different electrodes, and some devices still require manual stirring of the titrated solution, which is quite cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a universal laboratory titration apparatus that solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a universal laboratory titration apparatus, comprising a housing, with an upper and a lower layer inside. The upper layer has a meter, a first reagent bottle, and a second reagent bottle mounted on its top. Two pump assemblies are symmetrically installed inside the upper layer, each with a first tube assembly and a second tube assembly, which pass through their respective pump assemblies and are inserted into the first and second reagent bottles. The lower layer contains a glass measuring cup, with a stirring assembly below it. An electrode rod is installed inside the glass measuring cup. A terminal is located on the side of the housing. The meter is electrically connected to the electrode rod and the terminal. The pump assemblies transport the reagents from the first and second reagent bottles. The electrode rod senses changes in signal and transmits the signal to the meter, which then transmits it to the terminal. The electrode rod can be for pH, ORP, conductivity, etc. The terminal can be a computer, multimedia device, or mobile phone, etc.

[0007] As a preferred embodiment of the present invention, the pump assembly includes a metering pump and a pump roller installed inside the metering pump. A pump cover is installed above the metering pump, and the reagent is delivered by squeezing the first tube assembly or the second tube assembly through the pump roller.

[0008] As a preferred embodiment of the present invention, the first tube assembly includes a first water outlet glass tube and a first silicone tube connected to the first water outlet glass tube. The first water outlet glass tube is installed between the upper and lower layers, the first silicone tube passes through the metering pump, and the first silicone tube is inserted into the first reagent bottle.

[0009] As a preferred embodiment of the present invention, the second tube assembly includes a second water outlet glass tube and a second silicone tube connected to the second water outlet glass tube. The second water outlet glass tube is installed between the upper and lower layers, the second silicone tube passes through the metering pump, and the second silicone tube is inserted into the second reagent bottle.

[0010] As a preferred embodiment of this utility model, a handle is fixed to the side of the pump cover. The handle is mainly for the convenience of opening the pump cover to facilitate the installation of the first silicone tube and the second silicone tube.

[0011] In a preferred embodiment of this invention, the stirring assembly includes a magnetic stirrer and a rotor. The magnetic stirrer is located at the bottom of the glass measuring cup, and the rotor is located inside the glass measuring cup. The rotor and the magnetic stirrer are magnetically connected. The magnetic stirrer drives the rotor to rotate, thereby stirring the reagent inside the glass measuring cup.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention employs a metering pump and silicone tubing to precisely control the flow rate of the titrant, reducing human error and improving repeatability; real-time monitoring with digital electrodes avoids subjective errors associated with traditional manual interpretation; interchangeable electrode rods make it suitable for various analytical scenarios such as acid-base titration, redox titration, and complexometric titration; and an integrated magnetic stirring design ensures uniform reaction and avoids errors associated with manual stirring. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the pump assembly structure of this utility model.

[0016] In the diagram: 1. Housing; 101. Upper layer; 102. Lower layer; 2. Meter head; 3. First reagent bottle; 4. Second reagent bottle; 5. Pump assembly; 501. Metering pump; 502. Pump roller; 503. Pump cover; 5031. Handle; 6. First tube assembly; 601. First water outlet glass tube; 602. First silicone tube; 7. Second tube assembly; 701. Second water outlet glass tube; 702. Second silicone tube; 8. Glass measuring cup; 9. Stirring assembly; 901. Magnetic stirrer; 902. Rotor; 10. Electrode rod; 11. Terminal. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a universal laboratory titration device, including a housing 1. The housing 1 has an upper layer 101 and a lower layer 102 inside. The top of the upper layer 101 has a meter 2, a first reagent bottle 3, and a second reagent bottle 4. Two pump assemblies 5 are symmetrically installed inside the upper layer 101. Each pump assembly 5 has a first tube assembly 6 and a second tube assembly 7, which pass through the corresponding pump assembly 5 and are inserted into the first reagent bottle 3 and the second reagent bottle 4, respectively. The lower layer 102 has a glass measuring cup 8 inside, with a stirring assembly 9 below it. An electrode rod 10 is installed inside the glass measuring cup 8. A terminal 11 is located on the side of the housing 1. The meter 2 is electrically connected to the electrode rod 10 and the terminal 11. The pump assembly 5 is used to deliver the reagents in the first reagent bottle 3 and the second reagent bottle 4. The electrode rod 10 is used to sense changes in signal and transmit the signal to the meter 2, which then transmits the signal to the terminal 11. Electrode rod 10 can be for pH, ORP, conductivity, etc. Terminal 11 can be a computer, multimedia device, or mobile phone, etc.

[0021] Furthermore, the pump assembly 5 includes a metering pump 501 and a pump roller 502 installed inside the metering pump 501. A pump cover 503 is installed above the metering pump 501. The pump roller 502 squeezes the first tube assembly 6 or the second tube assembly 7 to deliver reagents.

[0022] Furthermore, the first tube assembly 6 includes a first water outlet glass tube 601 and a first silicone tube 602 connected to the first water outlet glass tube 601. The first water outlet glass tube 601 is installed between the upper layer 101 and the lower layer 102. The first silicone tube 602 passes through the metering pump 501 and is inserted into the first reagent bottle 3.

[0023] Furthermore, the second tube assembly 7 includes a second water outlet glass tube 701 and a second silicone tube 702 connected to the second water outlet glass tube 701. The second water outlet glass tube 701 is installed between the upper layer 101 and the lower layer 102. The second silicone tube 702 passes through the metering pump 501 and is inserted into the second reagent bottle 4.

[0024] Furthermore, a handle 5031 is fixed to the side of the pump cover 503. The handle 5031 is mainly for the convenience of opening the pump cover 503 to facilitate the installation of the first silicone tube 602 and the second silicone tube 702.

[0025] Furthermore, the stirring assembly 9 includes a magnetic stirrer 901 and a rotor 902. The magnetic stirrer 901 is located at the bottom of the glass measuring cup 8, and the rotor 902 is located inside the glass measuring cup 8. The rotor 902 and the magnetic stirrer 901 are magnetically connected. The magnetic stirrer 901 drives the rotor 902 to rotate, thereby stirring the reagent inside the glass measuring cup 8.

[0026] In summary, according to the titration parameters, this device pre-fixes the corresponding electrode rod 10 in the glass graduated cylinder, pours in the prepared liquid for titration, places the first reagent bottle 3 and the second reagent bottle 4 on the housing 1, opens the pump cover 503 of the metering pump 501 through the handle 5031, and installs and cleans the first silicone tube 602 and the second silicone tube 702. One end of the first silicone tube 602 and the second silicone tube 702 are inserted into the first reagent bottle 3 and the second reagent bottle 4, and the other end is inserted into the first water outlet glass tube 601 and the second water outlet glass tube 701, respectively. The meter 2 is connected via... When the data cable is connected to terminal 11, the titration program is started. The magnetic stirrer 901 generates a magnetic field, which drives the rotor 902 in the glass graduated cylinder to rotate. At this time, the pump roller 502 starts to rotate, and the reagents in the first reagent bottle 3 and the second reagent bottle 4 are dripped into the glass graduated cylinder through the silicone tube. Under the action of the rotor 902, they are quickly mixed. The electrode rod 10 senses the change signal. When the set value is reached, the signal is quickly transmitted to the meter 2. The meter 2 then transmits the signal to terminal 11 and issues a mass stop titration. Based on the titration isochronous mass and the sensed signal value, the titration result is calculated, and the titration process is completed.

[0027] It is worth noting that the entire device is controlled by a master control button. Since the device matched with the control button is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A universal laboratory titration apparatus, characterized in that: The device includes a housing (1), which has an upper layer (101) and a lower layer (102) inside. The upper layer (101) has a meter (2), a first reagent bottle (3) and a second reagent bottle (4) on its top. Two pump assemblies (5) are symmetrically installed inside the upper layer (101). The two pump assemblies (5) are respectively equipped with a first tube assembly (6) and a second tube assembly (7). The first tube assembly (6) and the second tube assembly (7) pass through the corresponding pump assembly (5) and are inserted into the first reagent bottle (3) and the second reagent bottle (4). The lower layer (102) has a glass measuring cup (8) inside. A stirring assembly (9) is installed below the glass measuring cup (8). An electrode rod (10) is installed inside the glass measuring cup (8). A terminal (11) is provided on the side of the housing (1). The meter (2) is electrically connected to the electrode rod (10) and the terminal (11) respectively.

2. The universal laboratory titration apparatus according to claim 1, characterized in that: The pump assembly (5) includes a metering pump (501) and a pump roller (502) installed inside the metering pump (501), and a pump cover (503) is installed above the metering pump (501).

3. The universal laboratory titration apparatus according to claim 1, characterized in that: The first tube assembly (6) includes a first water outlet glass tube (601) and a first silicone tube (602) connected to the first water outlet glass tube (601). The first water outlet glass tube (601) is installed between the upper layer (101) and the lower layer (102). The first silicone tube (602) passes through the metering pump (501) and is inserted into the first reagent bottle (3).

4. A universal laboratory titration apparatus according to claim 1, characterized in that: The second tube assembly (7) includes a second water outlet glass tube (701) and a second silicone tube (702) connected to the second water outlet glass tube (701). The second water outlet glass tube (701) is installed between the upper layer (101) and the lower layer (102). The second silicone tube (702) passes through the metering pump (501) and is inserted into the second reagent bottle (4).

5. A universal laboratory titration apparatus according to claim 2, characterized in that: A handle (5031) is fixed to the side of the pump cover (503).

6. A universal laboratory titration apparatus according to claim 1, characterized in that: The stirring assembly (9) includes a magnetic stirrer (901) and a rotor (902). The magnetic stirrer (901) is located at the bottom of the glass measuring cup (8), and the rotor (902) is located inside the glass measuring cup (8). The rotor (902) and the magnetic stirrer (901) are connected by magnetic force.

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