Densimeter calibration device

Abstract

The utility model relates to the technical field of densimeter calibration, in particular to a densimeter calibration device which comprises a measuring cup, the inner wall of the measuring cup is of a step-shaped structure, a fixing plate is arranged in the middle of the measuring cup, the upper end of the fixing plate is fixedly connected with a density measuring meter, a measuring fork is arranged below the fixing plate, and the measuring fork is connected with the density measuring meter. The two sides of the lower end of the fixing plate are fixedly connected with connecting plates, the side ends of the connecting plates are fixedly connected with electric push rods, the power output ends of the electric push rods are fixedly connected with sealing pieces, sliding grooves are formed in the sealing pieces, pressurizing plates are inserted into the sliding grooves, the upper ends of the sealing pieces are fixedly connected with mounting pieces, and the upper ends of the sealing pieces are fixedly connected with sealing rubber pieces. According to the density meter calibration device, the density meter can be calibrated, and the measurement accuracy is ensured during calibration.

Description

Technical Field

[0001] This utility model relates to the field of densitometer calibration technology, specifically a densitometer calibration device. Background Technology

[0002] In the laboratory, many liquids require sealed measurements to facilitate subsequent experiments and ensure accuracy. However, many hydrometers become inaccurate after a period of use, significantly impacting later experiments. Therefore, periodic calibration measurements with the measuring liquid are necessary. However, existing hydrometers often accumulate air bubbles on the detection head during measurement, which can impede calibration accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a densitometer calibration device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a densitometer calibration device, comprising a measuring cup, the inner wall of which has a stepped structure, a fixing plate in the middle of the measuring cup, a densitometer fixedly connected to the upper end of the fixing plate, a measuring fork below the fixing plate, the measuring fork being connected to the densitometer, connecting plates fixedly connected to both sides of the lower end of the fixing plate, an electric push rod fixedly connected to the side end of the connecting plate, a sealing element fixedly connected to the power output end of the electric push rod, a sliding groove inside the sealing element, a pressure plate inserted into the sliding groove, an mounting component fixedly connected to the upper end of the sealing element, a sealing rubber sheet fixedly connected to the upper end of the sealing element, and a blocking plate fixedly connected to both sides of the lower end of the fixing plate.

[0005] Preferably, the sealing element has a semi-circular structure, two sealing elements form a sealing cylinder, a sealing strip is provided at the contact point of the two sealing elements, and the measuring fork is located in the middle of the sealing element.

[0006] Preferably, the sliding groove has two connecting holes in the middle, and a sealing plate is inserted into the connecting holes. The pressure plate and the sealing plate are fixedly connected.

[0007] Preferably, a sealing sleeve is fixedly connected to the middle of the electric actuator. The sealing sleeve is a rubber sleeve with a beveled front end and a connecting hole is provided in the middle of the sealing element.

[0008] Preferably, the mounting component has a conical structure, the sealing rubber sheet has a funnel structure, the mounting component is located in the middle of the sealing rubber sheet, and the upper end of the sealing component is provided with an exhaust port, which is located between the mounting component and the sealing rubber sheet.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: After the measuring fork is placed into the measuring cup of the standard measuring liquid, the two sealing parts are pressed together to seal the measuring fork. Then, the pressure plate is pushed to squeeze the measuring liquid in the two sealing parts, thereby increasing the pressure between the two sealing parts and crushing the air bubbles attached to the measuring fork. At this time, the sealing plate is removed from the connection port, allowing the external measuring liquid to flow in slowly, thereby reducing the pressure inside the sealing parts and preventing the generation of new air bubbles on the inner wall of the sealing parts. This ensures that the measuring fork can accurately measure the liquid density, thereby calibrating the measuring fork and ensuring the accuracy of the calibration. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the calibration device connection.

[0011] Figure 2 This is a schematic diagram of the internal connection of the seal.

[0012] In the diagram: 1 Measuring cup, 2 Fixing plate, 3 Density meter, 4 Measuring fork, 5 Connecting plate, 6 Seal, 7 Blocking plate, 8 Sliding groove, 9 Pressure plate, 10 Electric push rod, 11 Connecting hole, 12 Sealing sleeve, 13 Connecting hole, 14 Sealing plate, 15 Mounting part, 16 Exhaust port, 17 Sealing rubber sheet. Detailed Implementation

[0013] To enhance understanding of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described and introduced below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, not all embodiments, and are not intended to limit the embodiments in any way. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0014] Please see Figure 1-2This utility model provides a technical solution: a densitometer calibration device, including a measuring cup 1, the inner wall of the measuring cup 1 having a stepped structure, a fixing plate 2 in the middle of the measuring cup 1, a densitometer 3 fixedly connected to the upper end of the fixing plate 2, a measuring fork 4 below the fixing plate 2, the measuring fork 4 being connected to the densitometer 3, connecting plates 5 fixedly connected to both sides of the lower end of the fixing plate 2, an electric push rod 10 fixedly connected to the side end of the connecting plate 5, a sealing element 6 fixedly connected to the power output end of the electric push rod 10, a sliding groove 8 inside the sealing element 6, a pressure plate 9 inserted into the sliding groove 8, an installation part 15 fixedly connected to the upper end of the sealing element 6, a sealing rubber sheet 17 fixedly connected to the upper end of the sealing element 6, and a blocking plate 7 fixedly connected to both sides of the lower end of the fixing plate 2. The densitometer 3 and the fixing plate are placed inside the measuring cup, and the sealing of the standard measuring liquid inside the measuring cup 1 is measured by the measuring fork 4, thereby calibrating the densitometer.

[0015] The sealing element 6 has a semi-circular structure. Two sealing elements 6 form a sealing cylinder. A sealing strip is provided at the contact point of the two sealing elements 6. The measuring fork 4 is located in the middle of the sealing element 6. The electric push rod 10 drives the two sealing elements 6 to close together, thereby wrapping and sealing the measuring fork 4. Then, it drives the pressure plate 9 to move, pressurizing the measuring fluid inside the sealing element 6, thereby breaking the air bubbles attached to the measuring fork 4.

[0016] The sliding groove 8 has two connecting holes 13 in the middle. A sealing plate 14 is inserted into the connecting hole 13. The pressure plate 9 and the sealing plate 14 are fixedly connected. After the pressure plate is pressurized, the sealing plate 14 is detached from the connecting hole 13, allowing the external measuring liquid to flow into the two sealing parts 6, so that the pressure inside the two sealing parts 6 is the same as the external pressure, and at the same time, it avoids new air bubbles from adhering to the measuring fork 4.

[0017] A sealing sleeve 12 is fixedly connected to the middle of the electric actuator 10. The sealing sleeve 12 is a rubber sleeve with a beveled front end. A connecting hole 11 is provided in the middle of the sealing element 6. During the closing process of the sealing element, the sealing sleeve 12 can drive the sealing element 6 and the pressure plate 9 to move together. After the two sealing elements 6 are closed, the pressure plate 9 starts to move and squeezes the measuring fluid between the two sealing elements 6. The sealing sleeve 12 ensures that the pressure plate 9 is in the initial position before squeezing the measuring fluid in the sealing element 6, thus ensuring the sealing performance of the sealing element 6.

[0018] Mounting member 15 has a conical structure, and sealing rubber sheet 17 has a funnel structure. Mounting member 15 is located in the middle of sealing rubber sheet 17. The upper end of sealing member 6 is provided with exhaust port 16, which is located between mounting member 15 and sealing rubber sheet 17. Sealing rubber sheet 17 is tightly attached to mounting member 15, thereby ensuring the sealing of the two sealing members 6 and ensuring that gas is discharged from exhaust port 16.

[0019] Although embodiments of the present invention have been shown and described, it should be emphasized that the above description is merely an introduction and description of the usage of the embodiments of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art will understand 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 densitometer calibration device, comprising a measuring cup (1), characterized in that: The inner wall of the measuring cup (1) is a stepped structure. A fixing plate (2) is provided in the middle of the measuring cup (1). A density measuring instrument (3) is fixedly connected to the upper end of the fixing plate (2). A measuring fork (4) is provided below the fixing plate (2). The measuring fork (4) is connected to the density measuring instrument (3). A connecting plate (5) is fixedly connected to both sides of the lower end of the fixing plate (2). An electric push rod (10) is fixedly connected to the side end of the connecting plate (5). A sealing element (6) is fixedly connected to the power output end of the electric push rod (10). A sliding groove (8) is provided inside the sealing element (6). A pressure plate (9) is inserted into the sliding groove (8). An installation part (15) is fixedly connected to the upper end of the sealing element (6). A sealing rubber sheet (17) is fixedly connected to the upper end of the sealing element (6). A blocking plate (7) is fixedly connected to both sides of the lower end of the fixing plate (2).

2. The densitometer calibration device according to claim 1, characterized in that: The sealing element (6) has a semi-circular structure. Two sealing elements (6) form a sealing cylinder. A sealing strip is provided at the contact point of the two sealing elements (6). The measuring fork (4) is located in the middle of the sealing element (6).

3. The densitometer calibration device according to claim 1, characterized in that: The sliding groove (8) has two connecting holes (13) in the middle, and a sealing plate (14) is inserted into the connecting hole (13). The pressure plate (9) and the sealing plate (14) are fixedly connected.

4. The densitometer calibration device according to claim 1, characterized in that: The electric actuator (10) is fixedly connected to a sealing sleeve (12) in the middle. The sealing sleeve (12) is a rubber sleeve with a beveled front end. The sealing element (6) has a connecting hole (11) in the middle.

5. A densitometer calibration device according to claim 1, characterized in that: The mounting component (15) has a conical structure, the sealing rubber sheet (17) has a funnel structure, the mounting component (15) is located in the middle of the sealing rubber sheet (17), and the upper end of the sealing component (6) is provided with an exhaust port (16), which is located between the mounting component (15) and the sealing rubber sheet (17).

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