Solid density measuring device

Abstract

The utility model belongs to the technical field of solid density measurement, and particularly relates to a solid density measuring device which comprises a base, a controller and two pressure sensors, the controller is fixed on the upper left portion of the base, the two pressure sensors are fixed on the upper right portion of the base, supports are fixed on the two pressure sensors, and the two supports are fixed on the base. A bearing assembly is arranged between the left support and the right support, the tops of the two supports are in threaded connection with bolts, and a measuring barrel is placed over the bearing assembly. When a solid to be measured is put into the measuring barrel, the hollow floating ball can control the volume measuring rod to rise along with the rise of the liquid level, and the variable quantity of the volume measuring rod can be observed through the top end surface of the fixed frame, so that the volume of the solid to be measured can be conveniently obtained, and the variable quantity of weight can be measured through the pressure sensor; therefore, the solid density can be quickly calculated by using the measured volume and weight data, and the operation and measurement are simpler and quicker.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid density measurement, in particular to a solid density measuring device. Background Art

[0002] In the process of physical experiments, it is often necessary to measure the density of solids. Density is closely related to mechanical properties and solid utilization. It is an important indicator for evaluating solid quality, strength and other characteristics. When measuring the density of objects with regular shapes, it is easy to obtain density data through calculation formulas. However, when measuring some special-shaped objects, it is necessary to use density measurement devices for auxiliary calculations.

[0003] In the Chinese utility model patent with publication number CN219532808U, a solid density measuring device is disclosed. It only needs to add the measured value of the buoyancy measurement scale to the measured value of the tension scale, and then divide the obtained value by the measured value of the volume measurement scale to obtain the density of the measured object. During this period, there is no need to move the measured object to measure the mass and volume separately, and the two main values ​​can be obtained at one time. It is convenient and simple, saving a certain amount of manpower, so the traditional solid density measurement is often cumbersome and labor-intensive.

[0004] However, after searching and combining the problems encountered in the actual density measurement process, it is found that the above technical solution still has defects and shortcomings: first, the above solution does not have the function of adjusting the level when measuring, which affects the indication accuracy between the liquid surface and the scale mark, resulting in inaccurate measurement data, and the above device structure is relatively complex and the operation convenience is low. Therefore, it is urgent to improve the existing solid density measuring device and provide a solid density measuring device. Utility Model Content

[0005] The purpose of the utility model is to provide a solid density measuring device with reasonable design, simple structure, easy operation, adjustable level function and higher measured data accuracy to solve the problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A solid density measuring device comprises a base, a controller and a pressure sensor, wherein the controller is fixed to the upper left of the base, and two pressure sensors are fixed to the upper right of the base, and brackets are fixed above the two pressure sensors, and a bearing assembly is provided between the left and right brackets, and bolts are threadedly connected to the tops of the two brackets, and a measuring barrel is placed directly above the bearing assembly, and a volume measurement assembly is provided on the outside of the measuring barrel.

[0008] As a preferred embodiment, the bearing assembly includes a support plate, a fixed shaft, a level bubble and a counterweight rod. Fixed shafts are welded and fixed to the middle of the outer walls of the left and right ends of the support plate, level bubbles are symmetrically fixed to the outer wall of the left end of the support plate, and counterweight rods are fixedly connected to the bottom of the left and right ends of the support plate.

[0009] As a preferred implementation, the two fixed shafts are respectively connected to the two bracket bearings, and a hole structure is provided inside the top end of the bracket.

[0010] As a preferred implementation, a rubber block is bonded to the bottom end of the bolt, and the rubber block is movably located in the hole structure inside the top end of the bracket.

[0011] As a preferred embodiment, the volume measurement assembly includes a fixed frame, a volume measuring rod, a pull ring and a hollow float. The fixed frame is fixedly installed in the middle of the upper end of the support plate, and the volume measuring rod is slidably connected through the middle of the top end of the fixed frame. The top of the volume measuring rod is fixedly connected with the pull ring, and the bottom of the volume measuring rod is fixedly connected with the hollow float.

[0012] As a preferred embodiment, guide wheels are symmetrically installed inside the top of the fixed frame for rotation, the volume measuring rod is located between the two guide wheels, and groove structures are provided on the left and right outer walls of the volume measuring rod. The outer surface of the guide wheel is movably fitted with the inner surface of the groove structure on the outer wall of the volume measuring rod.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the solution of the utility model:

[0015] Rotate the bolt to move it upward and separate the rubber block from the fixed shaft. At this time, gravity can cause the support plate to rotate between the two brackets until the bottom of the support plate is completely horizontal, which can also be observed through the level bubble. Then the bolt can be reversed to drive the rubber block downward, so that the rubber block can be positioned against the fixed shaft, which is convenient for ensuring the stability of the support plate during subsequent operations. Using a horizontal support plate can ensure the indication accuracy between the liquid level and the scale mark, avoiding large errors.

[0016] When the solid to be measured is placed in the measuring barrel, the volume measuring rod can be controlled to rise by the hollow float as the liquid level rises, and the change in the volume measuring rod can be observed through the top surface of the fixed frame, so that the volume of the solid to be measured can be obtained. The weight change can also be measured by a pressure sensor, so that the solid density can be quickly calculated using the measured volume and weight data, and the operation and measurement are simpler and faster. At the same time, the two guide wheels installed on the top of the fixed frame can improve the smoothness of the lifting and lowering of the volume measuring rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions, and the following description is made with respect to the drawings:

[0018] Figure 1 This is a three-dimensional front view structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the load-bearing assembly of the utility model when viewed from above;

[0020] Figure 3 It is a front view cross-sectional structure diagram of the bracket and bolt of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall front view structure of the volume measurement component of the utility model;

[0022] Figure 5 It is a schematic diagram of the top cross-sectional structure of the fixing frame and the guide wheel of the utility model.

[0023] In the figure:

[0024] 1. Base; 2. Controller; 3. Pressure sensor; 4. Bracket; 5. Load-bearing assembly; 51. Support plate; 52. Fixed shaft; 53. Level bubble; 54. Counterweight rod; 6. Bolt; 7. Rubber block; 8. Measuring barrel; 9. Volume measurement assembly; 91. Fixed frame; 911. Guide wheel; 92. Volume measurement rod; 93. Pull ring; 94. Hollow float. DETAILED DESCRIPTION

[0025] The embodiments described below are only some of the embodiments of the present invention and do not represent all the embodiments consistent with the present invention. Now, in conjunction with the accompanying drawings, the exemplary embodiments are described as follows:

[0026] like Figure 1-5 As shown, the utility model solid density measuring device includes a base 1, a controller 2 and a pressure sensor 3. The controller 2 is fixed to the upper left of the base 1, and two pressure sensors 3 are fixed to the upper right of the base 1. Brackets 4 are fixed above the two pressure sensors 3. A bearing assembly 5 is provided between the left and right brackets 4. Bolts 6 are threadedly connected to the tops of the two brackets 4. A measuring barrel 8 is placed directly above the bearing assembly 5, and a volume measuring assembly 9 is provided on the outside of the measuring barrel 8.

[0027] Based on the above structure, the supporting assembly 5 includes a support plate 51, a fixed shaft 52, a level bubble 53 and a counterweight rod 54. The fixed shaft 52 is welded and fixed to the middle position of the outer wall of the left and right ends of the support plate 51, the level bubble 53 is symmetrically fixed to the outer wall of the left end of the support plate 51, and the counterweight rod 54 is fixedly connected to the bottom of the left and right ends of the support plate 51.

[0028] In this embodiment, the support plate 51 is used to facilitate the placement of the measuring barrel 8, and the level bubble 53 is used to facilitate the observation of the horizontality of the support plate 51.

[0029] On the basis of the above structure, the two fixed shafts 52 are respectively connected to the bearings of the two brackets 4 , and a hole structure is opened inside the top end of the bracket 4 .

[0030] In this embodiment, since the fixed shaft 52 is connected to the bearing of the bracket 4, after the rotating bolt 6 releases the positioning of the fixed shaft 52, the support plate 51 can be rotated between the two brackets 4 by gravity, which makes it easy to control the bottom of the support plate 51 to be in a completely horizontal state, thereby improving the accuracy of the measured density data.

[0031] On the basis of the above structure, a rubber block 7 is bonded to the bottom end of the bolt 6 , and the rubber block 7 is movably located in the hole structure inside the top end of the bracket 4 .

[0032] In this embodiment, by rotating the bolt 6 to drive the rubber block 7 to move downward, the rubber block 7 can be positioned against the fixed shaft 52, thereby ensuring the stability of the horizontal state of the support plate 51 during subsequent operations.

[0033] Based on the above structure, the volume measuring component 9 includes a fixed frame 91, a volume measuring rod 92, a pull ring 93 and a hollow float 94. The fixed frame 91 is fixedly installed in the middle of the upper end of the support plate 51. The volume measuring rod 92 is slidably connected to the middle of the top of the fixed frame 91. The top of the volume measuring rod 92 is fixedly connected to the pull ring 93, and the bottom of the volume measuring rod 92 is fixedly connected to the hollow float 94.

[0034] In this embodiment, after the solid to be measured is put into the measuring barrel 8, the hollow float 94 is used to make the volume measuring rod 92 rise synchronously with the liquid surface. By observing the change in the volume measuring rod 92, the volume of the solid to be measured can be obtained, which facilitates the calculation of the density of the solid to be measured.

[0035] On the basis of the above structure, a guide wheel 911 is installed inside the top of the fixed frame 91 so as to rotate symmetrically on the left and right sides. The volume measuring rod 92 is located between the two guide wheels 911. The left and right outer walls of the volume measuring rod 92 are provided with groove structures. The outer surface of the guide wheel 911 is movably fitted with the inner surface of the groove structure on the outer wall of the volume measuring rod 92.

[0036] In this embodiment, two guide wheels 911 installed on the top of the fixing frame 91 are used to improve the smoothness of the volume measuring rod 92 during the lifting process.

[0037] The working principle of the utility model is as follows:

[0038] When in use, firstly rotate the bolt 6 to make it drive the rubber block 7 to rise and separate from the fixed shaft 52, then under the counterweight action of the counterweight rod 54, the support plate 51 can be rotated between the left and right brackets 4 by gravity until the bottom of the support plate 51 is in a completely horizontal state, which can also be observed through the level bubble 53. After the support plate 51 is in a horizontal state, the bolt 6 can be reversed to make it drive the rubber block 7 to move downward. At this time, the rubber block 7 can be used to resist and position the fixed shaft 52, so as to ensure the stability of the state of the support plate 51 during subsequent operations. By using the support plate 51 with a stable and horizontal bottom, the indication accuracy between the liquid surface and the volume scale mark on the surface of the volume measuring rod 92 can be ensured to avoid large errors.

[0039] Add a proper amount of water to the measuring barrel 8, and then let it stand for 2-4 seconds. The weight can be displayed on the controller 2 through the pressure sensor 3. After the weight value stabilizes, the weight value can be reset to zero. Then, the solid to be measured is slowly placed in the measuring barrel 8 and completely submerged in the water. First, by observing the value on the controller 2, the weight data of the solid to be measured can be quickly obtained. In addition, the placement of the solid will cause the liquid level to rise. At this time, the hollow float 94 can be used to control the volume measuring rod 92 to rise smoothly and stably under the action of the two guide wheels 911, and the increase and change of the volume measuring rod 92 can be observed through the top surface of the fixing frame 91, so as to obtain the volume data of the solid to be measured. After the weight and volume data of the solid to be measured are obtained, the density of the solid to be measured can be calculated and obtained according to the calculation formula for the density of the object in physics.

[0040] In the present application, the device structure is simpler, the operation is simple and convenient, and it has the function of adjusting the level, which can effectively reduce the measurement error. The obtained solid density data is more reliable. It should be noted that the control of the pressure sensor 3 by the controller 2 and the data reading and display are all existing mature technologies, which are directly quoted in this case and will not be described in detail.

Claims

1. A solid density measuring device, comprising a base (1), a controller (2) and a pressure sensor (3), characterized in that: A controller (2) is fixed to the upper left of the base (1), two pressure sensors (3) are fixed to the upper right of the base (1), brackets (4) are fixed above the two pressure sensors (3), a bearing assembly (5) is provided between the left and right brackets (4), bolts (6) are threadedly connected to the tops of the two brackets (4), a measuring barrel (8) is placed directly above the bearing assembly (5), and a volume measuring assembly (9) is provided on the outside of the measuring barrel (8).

2. A solid density measuring device according to claim 1, characterized in that: The bearing assembly (5) comprises a support plate (51), a fixed shaft (52), a level bubble (53) and a counterweight rod (54); the fixed shaft (52) is welded and fixed at the middle position of the outer wall of the left and right ends of the support plate (51); the level bubble (53) is symmetrically fixed to the outer wall of the left end of the support plate (51); and the counterweight rod (54) is fixedly connected to the bottom of the left and right ends of the support plate (51).

3. A solid density measuring device according to claim 2, characterized in that: The two fixed shafts (52) are respectively connected to the bearings of the two brackets (4), and a hole structure is provided inside the top end of the bracket (4).

4. A solid density measuring device according to claim 3, characterized in that: A rubber block (7) is bonded to the bottom end of the bolt (6), and the rubber block (7) is movably located in the hole structure inside the top end of the bracket (4).

5. A solid density measuring device according to claim 2, characterized in that: The volume measuring assembly (9) comprises a fixing frame (91), a volume measuring rod (92), a pull ring (93) and a hollow floating ball (94); the fixing frame (91) is fixedly mounted at the middle position of the upper end of the support plate (51); the volume measuring rod (92) is slidably connected to the middle of the top end of the fixing frame (91); the top of the volume measuring rod (92) is fixedly connected to the pull ring (93); and the bottom of the volume measuring rod (92) is fixedly connected to the hollow floating ball (94).

6. A solid density measuring device according to claim 5, characterized in that: A guide wheel (911) is symmetrically mounted on the top of the fixing frame (91) so as to rotate left and right. The volume measuring rod (92) is located between the two guide wheels (911). The left and right outer walls of the volume measuring rod (92) are provided with a groove structure. The outer surface of the guide wheel (911) is movably fitted with the inner surface of the groove structure on the outer wall of the volume measuring rod (92).

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