Strain gauge type weighing sensor device for surface tension meter

Abstract

The utility model discloses a strain gauge type weighing sensor device for a surface tension meter, which comprises a weighing sensor arranged in a detection cavity of the surface tension meter, a support for supporting is fixedly connected between the bottom of the weighing sensor and the surface tension meter, and a bearing assembly for conveniently bearing a sample container is arranged above the weighing sensor. A mounting assembly for realizing detachable connection is arranged between the bearing assembly and the weighing sensor; detachable connection of the bearing assembly and the weighing sensor is realized through the mounting assembly, so that the top of the bearing assembly is barrier-free, and subsequent placement of a sample container is facilitated; by rotating the rotary sleeve, the adjusting plate can be driven to horizontally move on one side of the fixed plate, and meanwhile, the beveling angle of the telescopic piece is changed, so that the distance between the adjusting plate and the fixed plate can be adjusted according to the size of the sample container, the adjustment operation of the bearing area is achieved, and the application range of the device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of strain type weighing sensors, and particularly relates to a strain gauge type weighing sensor device for a surface tensiometer. Background Art

[0002] When in contact with a liquid, a surface layer will be formed, and the mutual attraction existing in this surface layer is the surface tension. The surface tension is one of the key factors affecting various chemical reactions and biological reactions, and is also an important physical property of the liquid.

[0003] The weighing sensor is an important component of the surface tensiometer. A glass container filled with the liquid to be measured is placed on the weighing sensor, and a metal frame is hung on a small hook. The small hook moves the metal frame up and down. When the upper edge of the metal frame is just at the liquid surface, the reading of the weighing sensor is read. When the metal frame is pulled out of the liquid to be measured until the liquid film just breaks, the reading of the weighing sensor is read. The surface tension of the liquid can be obtained according to the difference in its readings.

[0004] The weighing sensor is actually a device that converts a mass signal into a measurable electrical signal output. Among them, the strain type weighing sensor is a strain type load sensor with a cylindrical structure developed by using SR-4 type resistance strain gauges, and is used for engineering force measurement and weighing metering.

[0005] The patent document with the existing publication number CN219200602U discloses a strain type weighing sensor convenient for induction, including a weighing sensor. A first connection plate is arranged on the upper surface of the weighing sensor, and a second connection plate is arranged on the lower surface of the weighing sensor; it further includes: a first fixing plate, which is arranged above the first connection plate, and a second fixing plate is arranged below the second connection plate. By arranging the first fixing plate, when in use, the fixing screw on the first fixing plate is threadedly connected with the second connection hole on the second fixing plate, and then the second fixing plate is moved downward so that the plugging column at its bottom is plugged and connected with the first connection hole on the induction plate, and then a nut is installed at the connection between the fixing screw and the first fixing plate for fixation. The placement of the first fixing plate facilitates the induction of the weighing sensor and the placement of items.

[0006] Although the above-mentioned strain type weighing sensor convenient for induction can solve the corresponding technical problems, the first fixing plate and the induction plate are fixed by the cooperation of the fixing screw and the second connection hole. However, the supporting area of the first fixing plate is fixed, and the fixing screw passes through the first fixing plate, resulting in limitations in the placement range of the first fixing plate, making it difficult to place a sample container with a larger size on the first fixing plate. Therefore, we propose a strain gauge type weighing sensor device for a surface tensiometer. Summary of the Utility Model

[0007] The object of the present utility model is to provide a strain gauge type weighing sensor device for a surface tensiometer, which is used to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above object, the main technical solutions adopted by the present utility model include:

[0009] A strain gauge type weighing sensor device for a surface tensiometer, comprising:

[0010] A weighing sensor disposed in the detection cavity of the surface tensiometer, a support for supporting is fixedly connected between the bottom thereof and the surface tensiometer, a support component for conveniently supporting a sample container is disposed above the weighing sensor, and an installation component for realizing a detachable connection is disposed between the support component and the weighing sensor;

[0011] Wherein, the support component includes a fixing plate disposed on the top of the installation component, two adjusting plates are movably connected to both sides of the fixing plate, a guiding member is disposed between the adjusting plate and the fixing plate, and an adjusting member for assisting in supporting the adjusting plate and positioning the adjusting plate is disposed at the bottom of the fixing plate.

[0012] As a preferred technical solution, the guiding member includes a sliding hole opened on the fixing plate, two sliders are slidably connected to the inner cavity of the sliding hole, and the opposite ends of the two sliders are respectively fixedly connected to the corresponding adjusting plates.

[0013] As a preferred technical solution, at least two sliding holes are symmetrically opened on the fixing plate.

[0014] As a preferred technical solution, the adjusting member includes bumps fixedly connected to both sides of the bottom of the adjusting member, a telescopic member is respectively disposed between each bump and the adjacent adjusting plate, and a triangular structure is formed among the bump, the telescopic member and the adjusting plate.

[0015] As a preferred technical solution, the telescopic member includes a screw tube movably connected to the bottom of the adjusting plate, a screw rod is threadedly connected to the inner cavity of the screw tube, the bottom end of the screw rod is movably connected to a connecting block, and the connecting block is movably connected to one side of the corresponding bump.

[0016] As a preferred technical solution, the ends of the screw tube and the connecting block are respectively rotatably connected to the adjusting plate and the bump through a rotating shaft, and the screw rod and the connecting block are rotatably connected through a bearing.

[0017] As a preferred technical solution, a rotating sleeve is fixedly connected to the surface of the screw rod, and a protrusion is fixedly connected to the surface of the rotating sleeve.

[0018] As a preferred technical solution, rubber pads are glued to both sides of the fixing plate, and one side of the rubber pad is in contact with the corresponding adjusting plate.

[0019] As a preferred technical solution, through holes for the slider to pass through are formed on the surface of the rubber pad.

[0020] As a preferred technical solution, the mounting assembly includes a connecting plate mounted on the top of the weighing sensor. A screw hole is formed at the center of the top of the connecting plate, and a stud threadedly connected to the inner wall surface of the screw hole is fixedly connected to the center of the bottom of the fixing plate.

[0021] The utility model has at least the following beneficial effects:

[0022] The beneficial effect of the utility model of this application is that the detachable connection between the supporting assembly and the weighing sensor is realized through the mounting assembly, so that there is no obstacle on the top of the supporting assembly, which helps to place the subsequent sample container; by rotating the rotating sleeve, the adjusting plate can be driven to horizontally move on one side of the fixing plate. At the same time, the oblique cutting angle of the telescopic member changes, and thus the distance between the adjusting plate and the fixing plate can be adjusted according to the size of the sample container to achieve the adjustment operation of the supporting area, thereby helping to improve the application range of the device. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of a strain gauge type weighing sensor device for a surface tensiometer of the utility model;

[0024] Figure 2 It is a three-dimensional exploded schematic structural diagram of a strain gauge type weighing sensor device for a surface tensiometer of the utility model;

[0025] Figure 3 It is a schematic bottom view of the structure of the supporting assembly of a strain gauge type weighing sensor device for a surface tensiometer of the utility model;

[0026] Figure 4 It is an exploded schematic structural diagram of the supporting assembly of a strain gauge type weighing sensor device for a surface tensiometer of the utility model;

[0027] Figure 5 It is a three-dimensional schematic structural diagram of the telescopic member of a strain gauge type weighing sensor device for a surface tensiometer of the utility model.

[0028] In the figure: 1, weighing sensor; 2, support; 3, supporting assembly; 31, fixing plate; 32, adjusting plate; 33, guiding member; 331, sliding hole; 332, slider; 34, adjusting member; 341, convex block; 342, telescopic member; 3421, screw tube; 3422, screw rod; 3423, connecting block; 3424, rotating sleeve; 3425, protrusion; 35, rubber pad; 4, mounting assembly; 41, connecting plate; 42, screw hole; 43, stud. Detailed Description of the Invention

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figures 1-5 , an embodiment of the present utility model provides a strain gauge type weighing sensor device for a surface tensiometer, including: a weighing sensor 1 disposed in the detection cavity of the surface tensiometer, a support 2 for support, a support assembly 3 for conveniently supporting a sample container, and an installation assembly 4 for realizing a detachable connection between the weighing sensor 1 and the support assembly 3. The support 2 is fixedly connected to the bottom of the weighing sensor 1. The support assembly 3 is located above the weighing sensor 1, and the installation assembly 4 is disposed between the weighing sensor 1 and the support assembly 3; the support assembly 3 includes a fixing plate 31 disposed at the top of the installation assembly 4. A regulating plate 32 is movably connected to both sides of the fixing plate 31. A guiding member 33 is provided between the regulating plate 32 and the fixing plate 31. A regulating member 34 for assisting in supporting the regulating plate 32 and positioning the regulating plate 32 is disposed at the bottom of the fixing plate 31.

[0031] Among them, the guiding member 33 includes a sliding hole 331 opened on the fixing plate 31. Two sliders 332 are slidably connected to the inner cavity of the sliding hole 331. The opposite ends of the two sliders 332 are respectively fixedly connected to the corresponding regulating plates 32. By moving the regulating plate 32, the slider 332 can be driven to slide in the inner cavity of the sliding hole 331, so that the regulating plate 32 can stably move horizontally.

[0032] Among them, at least two sliding holes 331 are symmetrically opened on the fixing plate 31.

[0033] Among them, the regulating member 34 includes bumps 341 fixedly connected to both sides of the bottom of the regulating member 34. A telescopic member 342 is respectively provided between each bump 341 and the adjacent regulating plate 32. A triangular structure is formed among the bump 341, the telescopic member 342, and the regulating plate 32, which can help improve the stability of the regulating plate 32.

[0034] Among them, the telescopic member 342 includes a screw tube 3421 movably connected to the bottom of the regulating plate 32. A screw rod 3422 is threadedly connected to the inner cavity of the screw tube 3421. The bottom end of the screw rod 3422 is movably connected to a connecting block 3423. The connecting block 3423 is movably connected to one side of the corresponding bump 341. By rotating the screw rod 3422, the position of the screw tube 3421 on the surface of the screw rod 3422 can be adjusted, and further the horizontal position of the regulating plate 32 on the side of the fixing plate 31 can be driven, so as to achieve the effect of adjusting the weighing area.

[0035] Among them, the end parts of the solenoid 3421 and the connecting block 3423 are respectively rotatably connected to the adjusting plate 32 and the convex block 341 through rotating shafts, so as to ensure that when the adjusting plate 32 moves horizontally, the bevel cutting angle of the telescopic member 342 can change accordingly. The screw rod 3422 and the connecting block 3423 are rotatably connected through a bearing.

[0036] Among them, a rotating sleeve 3424 is fixedly connected to the surface of the screw rod 3422, and a protrusion 3425 is fixedly connected to the surface of the rotating sleeve 3424. By using the cooperation of the rotating sleeve 3424 and the protrusion 3425, it is convenient for the staff to rotate the screw rod 3422.

[0037] Among them, rubber pads 35 are glued to both sides of the fixed plate 31, and one side of the rubber pads 35 is in contact with the corresponding adjusting plate 32. The rubber pads 35 can play a protective role for the fixed plate 31, effectively avoiding the phenomenon that the adjusting plate 32 moves excessively towards the fixed plate 31 due to excessive rotation of the rotating sleeve 3424, resulting in too large a force on the fixed plate 31.

[0038] Among them, through holes through which the sliding block 332 passes are formed on the surface of the rubber pad 35.

[0039] Among them, the installation component 4 includes a connecting plate 41 installed on the top of the weighing sensor 1. A screw hole 42 is formed at the center of the top of the connecting plate 41. A stud 43 threadedly connected to the inner wall surface of the screw hole 42 is fixedly connected to the center of the bottom of the fixed plate 31. Through the installation component 4, the detachable connection between the weighing sensor 1 and the supporting component 3 can be realized, which is convenient for assembling the supporting component 3 according to actual needs.

[0040] The working principle of the present utility model is as follows: By aligning the stud 43 with the screw hole 42 and screwing it in, the assembly operation of the supporting component 3 and the weighing sensor 1 can be completed; by rotating the rotating sleeve 3424, the rotating sleeve 3424 drives the screw rod 3422 to rotate. Under the action of the thread, the screw rod 3422 drives the solenoid 3421 to move on its surface. The solenoid 3421 pushes the adjusting plate 32 to move on one side of the fixed plate 31. The adjusting plate 32 drives the sliding block 332 to slide in the inner cavity of the sliding block 332. At the same time, the bevel cutting angle of the telescopic member 342 changes, so that the distance between the adjusting plate 32 and the fixed plate 31 can be adjusted according to the size of the sample container, so as to achieve the adjustment operation of the supporting area.

[0041] Parts not involved in the present utility model are the same as or can be implemented by using the prior art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A strain gauge type weighing sensor device for a surface tension meter, characterized in that: include: A weighing sensor (1) is arranged in a detection chamber of a surface tension meter, wherein a support (2) is fixedly connected between the bottom of the weighing sensor and the surface tension meter, a support assembly (3) for conveniently supporting a sample container is arranged above the weighing sensor (1), and a mounting assembly (4) for realizing a detachable connection is arranged between the support assembly (3) and the weighing sensor (1); The supporting assembly (3) comprises a fixed plate (31) arranged on the top of the mounting assembly (4), and an adjusting plate (32) is movably connected to both sides of the fixed plate (31), a guide member (33) is provided between the adjusting plate (32) and the fixed plate (31), and an adjusting member (34) for auxiliary support of the adjusting plate (32) and for positioning the adjusting plate (32) is provided at the bottom of the fixed plate (31).

2. The strain gauge type weighing sensor device for a surface tension meter according to claim 1, characterized in that: The guide member (33) comprises a sliding hole (331) formed on the fixed plate (31), the inner cavity of the sliding hole (331) being slidably connected to two sliding blocks (332), and the opposite ends of the two sliding blocks (332) are respectively fixedly connected to the corresponding adjustment plates (32).

3. The strain gauge type weighing sensor device for a surface tension meter according to claim 2, characterized in that: At least two sliding holes (331) are symmetrically provided on the fixing plate (31).

4. The strain gauge type weighing sensor device for a surface tension meter according to claim 1, characterized in that: The adjusting member (34) comprises protrusions (341) fixedly connected to two sides of the bottom of the adjusting member (34), a telescopic member (342) is respectively arranged between each protrusion (341) and an adjacent adjusting plate (32), and a triangular structure is formed between the protrusion (341), the telescopic member (342) and the adjusting plate (32).

5. The strain gauge type weighing sensor device for a surface tension meter according to claim 4, characterized in that: The telescopic member (342) comprises a screw tube (3421) movably connected to the bottom of the adjustment plate (32); the inner cavity of the screw tube (3421) is threadedly connected to a screw rod (3422); the bottom end of the screw rod (3422) is movably connected to a connecting block (3423); and the connecting block (3423) is movably connected to one side of the corresponding protrusion (341).

6. The strain gauge type weighing sensor device for a surface tension meter according to claim 5, characterized in that: The ends of the screw tube (3421) and the connecting block (3423) are rotatably connected to the adjustment plate (32) and the protrusion (341) via a rotating shaft, respectively, and the screw rod (3422) and the connecting block (3423) are rotatably connected via a bearing.

7. The strain gauge type weighing sensor device for a surface tension meter according to claim 5, characterized in that: A rotary sleeve (3424) is fixedly connected to the surface of the screw rod (3422), and a protrusion (3425) is fixedly connected to the surface of the rotary sleeve (3424).

8. The strain gauge type weighing sensor device for a surface tension meter according to claim 1, characterized in that: Rubber pads (35) are glued to both sides of the fixing plate (31), and one side of the rubber pad (35) is in contact with the corresponding adjustment plate (32).

9. The strain gauge type weighing sensor device for a surface tension meter according to claim 8, characterized in that: The surface of the rubber pad (35) is provided with a through hole through which the working slider (332) passes.

10. The strain gauge type weighing sensor device for a surface tension meter according to claim 1, characterized in that: The mounting assembly (4) comprises a connecting plate (41) mounted on the top of the weighing sensor (1), a screw hole (42) being provided at the center of the top of the connecting plate (41), and a stud (43) being fixedly connected at the center of the bottom of the fixing plate (31) and being threadedly connected to the inner wall surface of the screw hole (42).

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