A float type specific gravity measuring instrument

Abstract

The application discloses a float ball type specific gravity measuring instrument, and relates to the technical field of specific gravity measuring instruments, which comprises a specific gravity measuring installation flange. The device is characterized in that the buoyancy of the float makes the bending force rod move, drives the connected bending force spring steel plate to deform and is transmitted to the strain gauge set, the resistance change generated by the deformation of the strain gauge set is converted into a voltage signal through a bridge, and the corresponding density value after calibration is used to complete the measurement. The float is located in the measuring tube. When the liquid in the reactor body fills the measuring tube and completely submerges the float, the float is affected by the buoyancy, drives the bending force rod to move, and drives the bending force spring steel plate to move through the connecting piece. Since the other end of the bending force spring steel plate is fixed by the supporting structure, the bending force spring steel plate deforms. The strain gauge set detects the strain (tensile or compressive deformation) on the surface of the bending force spring steel plate, can accurately measure the slight deformation, converts the resistance change of the strain gauge set into a voltage signal, and further amplifies and digitizes the voltage signal, so that the quantitative measurement of the density is realized.

Description

Technical Field

[0001] This utility model relates to the field of specific gravity measuring instruments, and in particular to a float-type specific gravity measuring instrument. Background Technology

[0002] A specific gravity meter is an instrument used to measure the specific gravity (density) of a substance. It uses physical principles to sense the density difference of the substance being measured and then converts it into a specific gravity value. It is widely used in chemical, pharmaceutical, food, petroleum, environmental protection, scientific research and other fields.

[0003] Current specific gravity meters mostly use ultrasonic and pressure difference methods, which involve expensive and complex instruments and components, resulting in high operating costs and some inconvenience.

[0004] To address these issues, we provide a float-type specific gravity meter. Utility Model Content

[0005] The purpose of this invention is to provide a float-type specific gravity measuring instrument to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a float-type specific gravity measuring instrument, including a specific gravity measuring mounting flange, a flushing pipe fixedly connected to the bottom of one side of the specific gravity measuring mounting flange, a first aluminum alloy block abutting against the lower outer side of the flushing pipe, a second aluminum alloy block fixedly connected to the top of the first aluminum alloy block by screws, a bending spring steel plate provided at the top of the second aluminum alloy block, a third aluminum alloy block provided on one side of the top of the bending spring steel plate, the third aluminum alloy block and the second aluminum alloy block being fixedly connected by screws, and a strain gauge assembly installed in the middle of the top of the bending spring steel plate.

[0007] Preferably, a fourth aluminum alloy block is provided on the other side of the top of the bending spring steel plate, and a fifth aluminum alloy block is provided on the other side of the bottom of the bending spring steel plate. The fifth aluminum alloy block and the fourth aluminum alloy block are fixedly connected by screws, and a sixth aluminum alloy block is fixedly connected to the bottom of the fifth aluminum alloy block by screws.

[0008] Preferably, the inner arc of the fifth aluminum alloy block is abutted by a PTFE sealing sleeve, and one end of the PTFE sealing sleeve is abutted by a sealing sleeve pressure plate. The sealing sleeve pressure plate is fixedly connected to the specific gravity measuring mounting flange by screws.

[0009] Preferably, a bending rod is fitted inside the PTFE sealing sleeve, and a float is fixedly connected to the other end of the bending rod.

[0010] Preferably, the bottom of the specific gravity measuring mounting flange is provided with a flushing nozzle, which is located at one end of the flushing pipe.

[0011] Preferably, a sealing gasket is abutted on one side of the specific gravity measuring mounting flange, and a specific gravity measuring interface flange is abutted on the other side of the sealing gasket. The specific gravity measuring interface flange and the specific gravity measuring mounting flange are fixedly connected by bolts. A measuring tube is welded to the inner side of the specific gravity measuring interface flange, and a reactor body is welded to one end of the measuring tube.

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

[0013] 1. This device uses the buoyancy of a float to move a bending rod, which in turn causes the bending spring steel plate to deform. This deformation is transmitted to the strain gauge group. The resistance change caused by the deformation is converted into a voltage signal via a Wheatstone bridge. After calibration, the corresponding density value is obtained, and the measurement is completed. This structural component is simple to use and has a low cost. The float is located inside the measuring tube. When the liquid in the reactor body fills the measuring tube and completely submerges the float, the float is affected by buoyancy, which moves the bending rod. This causes the bending spring steel plate to move along with the bending rod connector composed of the fourth, fifth, and sixth aluminum alloy blocks. Since the other end of the bending spring steel plate is fixed by the support structure composed of the first, second, and third aluminum alloy blocks, the bending spring steel plate deforms. The strain gauge group detects the strain (tensile or compressive deformation) on the surface of the bending spring steel plate, which can accurately measure minute deformations. Through the Wheatstone bridge circuit, the resistance change of the strain gauge group can be converted into a voltage signal, which is further amplified and digitally processed to achieve quantitative density measurement.

[0014] 2. The specific gravity measuring installation flange is fixedly connected to the specific gravity measuring installation flange with bolts for easy disassembly and assembly. The sealing gasket and PTFE sealing sleeve prevent liquid leakage from the specific gravity measuring installation flange. After the measurement is completed, external flushing liquid can be introduced through the flushing pipe. After the power is increased by the pump, the liquid is introduced obliquely into the measuring pipe through the flushing nozzle to flush the float and reduce measurement deviation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the overall bottom view structure proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the overall side view structure proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the overall cross-sectional structure proposed in this utility model.

[0019] In the diagram: 1. Specific gravity measurement mounting flange; 2. Flushing pipe; 3. First aluminum alloy block; 4. Second aluminum alloy block; 5. Bending spring steel plate; 6. Third aluminum alloy block; 7. Strain gauge assembly; 8. Fourth aluminum alloy block; 9. Fifth aluminum alloy block; 10. Sixth aluminum alloy block; 11. PTFE sealing sleeve; 12. Sealing sleeve pressure plate; 13. Bending rod; 14. Float; 15. Flushing nozzle; 16. Sealing gasket; 17. Specific gravity measurement interface flange; 18. Measuring tube; 19. Reactor body. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 As shown, a float-type specific gravity meter includes a specific gravity measuring mounting flange 1. A flushing pipe 2 is fixedly connected to the bottom of one side of the specific gravity measuring mounting flange 1. A first aluminum alloy block 3 is abutted against the lower outer side of the flushing pipe 2. A second aluminum alloy block 4 is fixedly connected to the top of the first aluminum alloy block 3 by screws. A bending spring steel plate 5 is provided on the top of the second aluminum alloy block 4. A third aluminum alloy block 6 is provided on one side of the top of the bending spring steel plate 5. The third aluminum alloy block 6 and the second aluminum alloy block 4 are fixedly connected by screws. A strain gauge assembly 7 is installed in the middle of the top of the bending spring steel plate 5. The first aluminum alloy block 3 and the second aluminum alloy block 4 are spliced ​​together on the outside of the flushing pipe 2 to form a support. The third aluminum alloy block 6, the bending spring steel plate 5, the second aluminum alloy block 4, and the first aluminum alloy block 3 are connected by screws to form a fixed support structure. The strain gauge group 7 detects the strain (tensile or compressive deformation) on the surface of the bending spring steel plate 5, which can accurately measure minute deformations. Due to the different densities of the measured medium, the float 14 is subjected to different forces, and the bending degree and bending direction of the bending spring steel plate 5 will change, causing the resistance of the strain gauge group 7 to change. Based on this, the deviation between the density of the measured medium and the calibration medium can be calculated. Through the Wheatstone bridge circuit, the resistance change of the strain gauge group 7 can be converted into a voltage signal, which is further amplified and digitally processed to realize the quantitative measurement of density.

[0022] Furthermore, a fourth aluminum alloy block 8 is provided on the other side of the top of the bending spring steel plate 5, and a fifth aluminum alloy block 9 is provided on the other side of the bottom of the bending spring steel plate 5. The fifth aluminum alloy block 9 and the fourth aluminum alloy block 8 are fixedly connected by screws. The bottom of the fifth aluminum alloy block 9 is fixedly connected by screws to a sixth aluminum alloy block 10. The bending rod 13 is fixed to the other end of the bending spring steel plate 5 by a connector composed of the fourth aluminum alloy block 8, the fifth aluminum alloy block 9 and the sixth aluminum alloy block 10.

[0023] Furthermore, the inner arc of the fifth aluminum alloy block 9 is abutted by a PTFE sealing sleeve 11, and the outer side of one end of the PTFE sealing sleeve 11 is abutted by a sealing sleeve pressure plate 12. The sealing sleeve pressure plate 12 is fixedly connected to the specific gravity measuring installation flange 1 by screws. The PTFE sealing sleeve 11 seals the leakage hole of the specific gravity measuring installation flange 1 through the sealing sleeve pressure plate 12 to prevent liquid from leaking from the central hole.

[0024] Furthermore, a bending rod 13 is fitted inside the PTFE sealing sleeve 11, and a float 14 is fixedly connected to the other end of the bending rod 13. The float 14 is located inside the measuring tube 18. When the liquid in the reactor body 19 fills the measuring tube 18 and completely submerges the float 14, the float 14 is affected by buoyancy, which drives the bending rod 13 to move. The bending rod 13 is made of rigid material, which drives the connecting part at the other end to make the same movement.

[0025] Furthermore, a flushing nozzle 15 is provided at the bottom of the specific gravity measuring mounting flange 1. The flushing nozzle 15 is located at one end of the flushing pipe 2. After the measurement is completed, external flushing liquid can be introduced through the flushing pipe 2. After the power is increased by the pump, the liquid is introduced obliquely into the measuring pipe 18 through the flushing nozzle 15 to flush the float 14 and reduce the measurement deviation.

[0026] Furthermore, a gasket 16 is abutted on one side of the specific gravity measuring installation flange 1, and a specific gravity measuring interface flange 17 is abutted on the other side of the gasket 16. The specific gravity measuring interface flange 17 and the specific gravity measuring installation flange 1 are fixedly connected by bolts. A measuring tube 18 is welded to the inside of the specific gravity measuring interface flange 17, and a reactor body 19 is welded to one end of the measuring tube 18. The specific gravity measuring installation flange 1 and the specific gravity measuring interface flange 17 are fixedly connected by bolts for easy disassembly and assembly. The gasket 16 prevents liquid from leaking from the specific gravity measuring installation flange 1.

[0027] Working principle: In use, firstly, the specific gravity measuring installation flange 1 and the specific gravity measuring interface flange 17 are fixedly connected by bolts. The sealing gasket 16 and the PTFE sealing sleeve 11 prevent liquid leakage from the specific gravity measuring installation flange 1. Secondly, the float 14 is located inside the measuring tube 18. When the liquid in the reactor body 19 fills the measuring tube 18 and completely submerges the float 14, the float 14, under the influence of buoyancy, drives the bending rod 13 to move. This causes the bending spring steel plate 5 to move due to the connecting piece of the bending rod 13, composed of the fourth aluminum alloy block 8, the fifth aluminum alloy block 9, and the sixth aluminum alloy block 10. Thirdly, because the other end of the bending spring steel plate 5 is fixed by the support structure composed of the first aluminum alloy block 3, the second aluminum alloy block 4, and the third aluminum alloy block 6, the bending spring steel plate 5 deforms. The strain gauge group 7 detects the strain (tensile or compressive deformation) on the surface of the bending spring steel plate 5, and can accurately measure minute deformations. Due to the different densities of the measured medium, the float 14 is subjected to different forces, and the bending degree and bending direction of the bending spring steel plate 5 will change, causing the resistance of the strain gauge group 7 to change. Based on this, the deviation between the density of the measured medium and the calibration medium can be calculated. Through the Wheatstone bridge circuit, the resistance change of the strain gauge group 7 can be converted into a voltage signal, which is further amplified and digitally processed to achieve quantitative density measurement. In the fourth step, after the measurement is completed, external flushing liquid can be introduced through the flushing pipe 2. After the power is increased by the pump, the liquid is obliquely introduced into the measuring pipe 18 through the flushing nozzle 15 to flush the float 14 and reduce the measurement deviation. This completes the use of a float-type specific gravity measuring instrument.

[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 float-type specific gravity meter, comprising a specific gravity measuring mounting flange (1), characterized in that, A flushing pipe (2) is fixedly connected to the bottom of one side of the specific gravity measuring mounting flange (1). A first aluminum alloy block (3) abuts against the lower outer side of the flushing pipe (2). A second aluminum alloy block (4) is fixedly connected to the top of the first aluminum alloy block (3) by screws. A bending spring steel plate (5) is provided at the top of the second aluminum alloy block (4). A third aluminum alloy block (6) is provided on one side of the top of the bending spring steel plate (5). The third aluminum alloy block (6) is fixedly connected to the second aluminum alloy block (4) by screws. A strain gauge group (7) is installed in the middle of the top of the bending spring steel plate (5).

2. The float-type specific gravity measuring instrument according to claim 1, characterized in that, A fourth aluminum alloy block (8) is provided on the other side of the top of the bending spring steel plate (5), and a fifth aluminum alloy block (9) is provided on the other side of the bottom of the bending spring steel plate (5). The fifth aluminum alloy block (9) and the fourth aluminum alloy block (8) are fixedly connected by screws. The bottom of the fifth aluminum alloy block (9) is fixedly connected by screws to a sixth aluminum alloy block (10).

3. A float-type specific gravity measuring instrument according to claim 2, characterized in that, The inner arc of the fifth aluminum alloy block (9) is abutted by a PTFE sealing sleeve (11), and the outer side of one end of the PTFE sealing sleeve (11) is abutted by a sealing sleeve pressure plate (12). The sealing sleeve pressure plate (12) is fixedly connected to the specific gravity measuring installation flange (1) by screws.

4. A float-type specific gravity measuring instrument according to claim 3, characterized in that, The inside of the PTFE sealing sleeve (11) is fitted with a bending rod (13), and the other end of the bending rod (13) is fixedly connected to a float (14).

5. A float-type specific gravity measuring instrument according to claim 1, characterized in that, The bottom of the specific gravity measuring mounting flange (1) is provided with a flushing nozzle (15), which is located at one end of the flushing pipe (2).

6. A float-type specific gravity measuring instrument according to claim 1, characterized in that, A gasket (16) abuts against one side of the specific gravity measuring installation flange (1), and a specific gravity measuring interface flange (17) abuts against the other side of the gasket (16). The specific gravity measuring interface flange (17) and the specific gravity measuring installation flange (1) are fixedly connected by bolts. A measuring tube (18) is welded to the inside of the specific gravity measuring interface flange (17), and a reactor body (19) is welded to one end of the measuring tube (18).

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