An electronic scale for weighing samples

Abstract

This utility model discloses a sample weighing electronic scale, including an electronic scale, a main control panel, a main display screen, an isolation cover, a weighing water tank, a support rod, a compressor, an inner tank, a water tank weighing pan, an outer tank, a flow stabilizer, a tray, weights, and a water tank display screen. The upper surface of the electronic scale is provided with an isolation cover, and a support rod is fixedly connected to the electronic scale. The other end of the support rod is fixedly connected to the weighing water tank, which has an outer tank and an inner tank. A base is fixedly connected to one outer wall of the weighing water tank, and a compressor is fixedly connected to the base. This utility model, by setting up a weighing water tank, can directly place samples with large diameters or irregular shapes, eliminating the limitations of traditional baskets and hanging lines, solving the problem of sample placement being constrained by range. Furthermore, the inclusion of a flow stabilizer maintains stable water flow, reduces sample shaking during placement, and allows for rapid and stable weighing data, effectively improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sample weighing technology, and in particular to an electronic sample weighing scale. Background Technology

[0002] In engineering raw material testing, material density is often involved, such as coarse aggregate density and water absorption rate tests, compacted asphalt mixture density tests, and block density tests, all of which require hydrostatic balances or underwater weighing devices.

[0003] Traditional weighing devices typically involve suspending a net basket submerged in water beneath the electronic scale. However, this method has five drawbacks in practice: 1. When placing asphalt mixture samples (150mm in diameter) or irregular rock samples into the net basket, the size of the basket and the range of the suspension line limit the placement. 2. The net basket and sample are prone to shaking when placed in the constant-temperature weighing tank, causing data instability over a long period and severely impacting test efficiency. 3. If the electronic scale moves even slightly, the suspension line may touch the edge of the perforation between the test platform and the weighing tank, causing test errors. 4. As the electronic scale is a frequently used device, improper handling, such as overloading the sample or impacting the sample placement, can damage the weighing sensor, affecting subsequent weighings. 5. When there is a significant difference between room temperature and water temperature, thermal expansion and contraction of the sample after immersion in water can affect its volume, thus affecting the weighing in the water and causing test errors. Utility Model Content

[0004] The purpose of this invention is to provide an electronic scale for weighing samples to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sample weighing electronic scale, including an electronic scale, an isolation cover provided on the upper surface of the electronic scale, a support rod fixedly connected to the electronic scale, a weighing water tank fixedly connected to the other end of the support rod, an outer groove and an inner groove opened in the weighing water tank, a base fixedly connected to one side of the outer wall of the weighing water tank, and a compressor fixedly connected to the base.

[0006] As a further technical solution of this utility model, a tray is fixedly connected to the upper surface of the electronic scale, and weights are provided on the upper surface of the tray.

[0007] As a further technical solution of this utility model, an air inlet pipe is fixedly connected to one side of the outer wall of the compressor, an upper air outlet pipe and a lower air outlet pipe are fixedly connected to the other side of the outer wall of the compressor, and a control box is fixedly connected to the upper surface of the compressor.

[0008] As a further technical solution of this utility model, an air inlet is provided on one side of the outer wall of the isolation cover.

[0009] As a further technical solution of this utility model, a water tank control panel is fixedly connected to one side of the outer wall of the weighing water tank, a water tank display screen is fixedly connected to the upper surface of the water tank control panel, a sealing plate is provided on the upper surface of the weighing water tank, and a drain hole is provided on the lower surface of the weighing water tank.

[0010] As a further technical solution of this utility model, an air inlet and a water inlet are provided on one side of the outer wall of the outer tank. A flow stabilizer is fixedly connected inside the outer tank. A water inlet pipe and a constant temperature water pipe are fixedly connected to the outer wall of the flow stabilizer. One end of the water inlet pipe is fixedly connected to the water inlet.

[0011] As a further technical solution of this utility model, a water tank weighing pan is fixedly connected to the surface of the inner tank, a water injection hole is opened on one side of the inner wall of the inner tank, and the water injection hole is connected to the outer tank, and the flow stabilizer is connected to the water injection hole.

[0012] As a further technical solution of this utility model, a main control panel is fixedly connected to one side of the outer wall of the electronic scale, and a main display screen is fixedly connected to the upper surface of the main control panel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, by setting up a weighing water tank, can directly place samples with large or irregular diameters, eliminating the limitations of traditional baskets and hanging lines and solving the problem of sample placement being restricted by range. Furthermore, the weighing water tank is equipped with a flow stabilizer, which injects water into the inner tank through the inlet pipe and water injection hole, maintaining a stable water flow, reducing shaking when placing the sample, and enabling rapid stabilization of weighing data, effectively improving testing efficiency. It also features a compressor that can adjust the temperature of the outer casing and the inside of the weighing water tank. The overall structure is rationally designed, easy to use, reduces testing errors, and extends the service life of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective;

[0018] Figure 3 This is a schematic diagram of the overall side view sectional structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall front view of the present invention;

[0020] Figure 5 This is a schematic diagram of the overall rear view structure of this utility model;

[0021] Figure 6 This is a top view of the overall structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the overall bottom view of the present invention.

[0023] In the diagram: 1. Electronic scale; 2. Main control panel; 3. Main display screen; 4. Isolation cover; 5. Weighing water tank; 6. Sealing plate; 7. Support rod; 8. Compressor; 9. Upper air outlet pipe; 10. Lower air outlet pipe; 11. Base; 12. Air inlet pipe; 13. Control box; 14. Inner tank; 15. Water inlet; 16. Weighing pan in the water tank; 17. Water inlet pipe; 18. Outer tank; 19. Air inlet of the outer cover; 20. Air inlet of the water tank; 21. Water inlet; 22. Drain hole; 23. Flow stabilizer; 24. Constant temperature water pipe; 25. Water tank control panel; 26. Tray; 27. Weights; 28. Water tank display screen. Detailed Implementation

[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0025] Please see the appendix Figure 1 -Appendix Figure 7 An embodiment of this utility model is provided: a sample weighing electronic scale 1, including an electronic scale 1, an isolation cover 4 is provided on the upper surface of the electronic scale 1, a support rod 7 is fixedly connected to the electronic scale 1, a weighing water tank 5 is fixedly connected to the other end of the support rod 7, an outer groove 18 and an inner groove 14 are provided in the weighing water tank 5, a base 11 is fixedly connected to one side of the outer wall of the weighing water tank 5, and a compressor 8 is fixedly connected to the base 11.

[0026] The outer casing 4 is used to prevent external airflow from interfering with the weighing process and to avoid the impact of the sample being placed directly on the electronic scale 1. The support rod 7 is made of rigid material to ensure the stability of the weighing tank 5 during the weighing process. The outer tank 18 and the inner tank 14 of the weighing tank 5 are functionally separated by a partition structure. The outer tank 18 is mainly used for water temperature control and flow stabilization, while the inner tank 14 is used to accommodate the sample and perform weighing. The compressor 8 is fixedly connected to the side wall of the weighing tank 5 via the base 11 to maintain a constant water temperature in the tank.

[0027] Furthermore, the isolation cover 4 can be made of transparent acrylic material for easy observation of the weighing process. The support rod 7 is preferably made of stainless steel, and its length can be adjusted according to actual needs. The outer tank 18 and inner tank 14 of the weighing water tank 5 can be processed by welding or integral molding, with the volume of the outer tank 18 typically larger than that of the inner tank 14. The compressor 8 is a small, quiet model, mounted on the base 11 via shock-absorbing pads. The isolation cover 4 effectively reduces airflow interference and operational shock, while the compressor 8 can precisely control the water temperature, avoiding measurement errors caused by thermal expansion and contraction. Compared with existing technologies, this device has the advantages of stable weighing, simple operation, and high measurement accuracy, and is particularly suitable for density determination of large-sized or irregular samples.

[0028] Furthermore, this application also proposes that a tray 26 is fixedly connected to the upper surface of the electronic scale 1, and a weight 27 is provided on the upper surface of the tray 26.

[0029] Specifically, the tray 26 is fixed to the weighing platform of the electronic scale 1 by welding or bolting. Its material can be stainless steel or aluminum alloy to ensure structural strength. The upper surface of the tray 26 is machined with positioning grooves or anti-slip textures to fix the position of the weights 27. Two sets of calibration weights 27 are provided: one set for use in air with weights of 100g, 500g, 1000g, 2000g, and 5000g; and the other set for use in water with weights of 100g, 500g, 1000g, 2000g, and 5000g.

[0030] Furthermore, this application also proposes that an air inlet pipe 12 is fixedly connected to one side of the outer wall of the compressor 8, an upper air outlet pipe 9 and a lower air outlet pipe 10 are fixedly connected to the other side of the outer wall of the compressor 8, and a control box 13 is fixedly connected to the upper surface of the compressor 8.

[0031] The intake pipe 12 is used to introduce external gas into the compressor 8, and its connection method can be flange connection or threaded connection. The upper exhaust pipe 9 and the lower exhaust pipe 10 are respectively located on both sides of the compressor 8, enabling staged gas output. The upper exhaust pipe 9 can be connected to the air inlet of the isolation cover 4, and the lower exhaust pipe 10 can be connected to the air inlet of the weighing tank 5. The control box 13 can integrate components such as pressure sensors and temperature controllers, and transmit signals to the main control panel 2 via cables. This technical solution achieves precise control of gas delivery through multi-pipe design and independent control units. Specifically, the dual exhaust pipe structure can separately meet the needs of constant temperature ventilation of the outer cover and stable flow in the water tank.

[0032] Furthermore, this application also proposes that an air inlet 19 be provided on one side of the outer wall of the isolation cover 4.

[0033] An air inlet 19 is located on the side wall of the isolation outer cover 4 to allow air circulation between the inside and outside of the isolation outer cover 4. In practice, the air inlet 19 can be a circular, square, or other shaped through-hole structure, and its size can be designed according to actual ventilation requirements. By setting the air inlet 19, the airflow environment inside the isolation outer cover 4 can be effectively regulated, avoiding the impact of thermal expansion and contraction caused by temperature changes on weighing accuracy. Specifically, when there is a significant difference between room temperature and water temperature, the air inlet 19 can achieve air convection, making the internal temperature of the isolation outer cover 4 closer to the water temperature, thereby reducing the volume measurement error of the sample caused by temperature changes.

[0034] Furthermore, this application also proposes that a water tank control panel 25 is fixedly connected to one outer wall of the weighing water tank 5, a water tank display screen 28 is fixedly connected to the upper surface of the water tank control panel 25, a sealing plate 6 is provided on the upper surface of the weighing water tank 5, and a drain hole 22 is provided on the lower surface of the weighing water tank 5.

[0035] The water tank control panel 25 is used to control various parameters of the weighing water tank 5, such as temperature adjustment and drainage control. It can be implemented using a touch screen or physical buttons. The water tank display screen 28 is used to display weighing data and water tank status information in real time. It can be an LED or LCD display screen. The sealing plate 6 is used to seal the upper opening of the weighing water tank 5 to prevent water evaporation and external interference. It can be made of transparent or semi-transparent material to allow observation of the internal situation. The drain hole 22 is used to drain the liquid in the weighing water tank 5. It can be equipped with a solenoid valve to achieve automatic drainage control.

[0036] Specifically, this technical solution achieves precise control and real-time monitoring of the weighing process by setting up a water tank control panel 25 and a water tank display screen 28. The sealing plate 6 effectively avoids errors caused by water evaporation in traditional open weighing methods, while also preventing interference from the external environment. The drain hole 22 facilitates quick replacement of the test water, improving test efficiency. Compared with existing technologies, this solution solves the problems of inconvenient operation and unstable data in traditional weighing devices, and significantly improves weighing accuracy and test efficiency through an integrated control panel and sealing design.

[0037] Furthermore, this application also proposes that an air inlet 20 and a water inlet 21 are provided on one side of the outer wall of the outer tank 18, and a flow stabilizer 23 is fixedly connected inside the outer tank 18. A water inlet pipe 17 and a constant temperature water pipe 24 are fixedly connected to the outer wall of the flow stabilizer 23, and one end of the water inlet pipe 17 is fixedly connected to the water inlet 21.

[0038] Specifically, the air inlet 20 is used to introduce gas into the weighing tank 5, and the water inlet 21 is used to inject liquid into the weighing tank 5. The flow stabilizer 23 is used to stabilize the liquid flow and reduce the impact of liquid fluctuations on weighing accuracy. The water inlet pipe 17 is used to connect an external water source to the water inlet 21, and the constant temperature water pipe 24 is used to maintain a constant temperature for the liquid in the weighing tank 5. Thus, this technical solution, by setting up the flow stabilizer 23 and the constant temperature water pipe 24, effectively solves the weighing error problem caused by water temperature changes and liquid fluctuations in traditional weighing devices. The flow stabilizer 23 reduces liquid sloshing, allowing the weighing data to stabilize quickly; the constant temperature water pipe 24 maintains a constant water temperature, preventing volume changes in the sample due to temperature variations.

[0039] Furthermore, this application also proposes that a water tank weighing pan 16 is fixedly connected to the surface of the inner tank 14, a water injection hole 15 is opened on one side of the inner wall of the inner tank 14, and the water injection hole 15 is conductively connected to the outer tank 18, and the flow stabilizer 23 is conductively connected to the water injection hole 15.

[0040] The weighing pan 16 is fixed to the bottom of the inner tank 14 by welding or bolting, and is used to directly support the test sample. This technical solution, by setting a dedicated weighing pan in the inner tank 14, allows the sample to be placed directly in the water for weighing, avoiding the space limitations of the traditional net basket hanging method.

[0041] Furthermore, this application also proposes that a main control panel 2 is fixedly connected to one side of the outer wall of the electronic scale 1, and a main display screen 3 is fixedly connected to the upper surface of the main control panel 2.

[0042] The main control panel 2 is used for centralized control of the weighing function and related parameter settings of the electronic scale 1. It can adopt a touch-screen or physical button design, and the control circuit board integrated inside the panel communicates with the main control system of the electronic scale 1. The main display screen 3 is used to display weighing data, status information, and operation menus in real time. It can adopt an LCD or LED display module and is connected to the control panel circuit via a ribbon cable. This technical solution solves the problem of equipment movement caused by frequent operation of traditional suspended weighing devices by integrating the control panel and display screen into the side wall of the electronic scale 1. Specifically, the operator can directly set parameters and read data from a fixed position, avoiding measurement errors caused by touching the suspension cable. At the same time, the centralized control design reduces the probability of the electronic scale 1 being subjected to external impacts, which is beneficial to protecting the long-term stability of the weighing sensor. The real-time feedback function of the display screen further improves the efficiency and data accuracy of the weighing process.

[0043] Working principle: When using this utility model, the weights 27 on the tray 26 are first used for calibration to ensure the accuracy of the data of the electronic scale 1 and the water tank weighing pan 16. When weighing the sample in air, the sample is placed on the tray 26, and then the isolation cover 4 is covered. The upper air outlet pipe 9 is connected to the air inlet 19 of the cover. The compressor 8 is started through the control box 13, and then the main control panel 2 is operated. At this time, the main display screen 3 shows that the brightness of the air weighing is increased, and the water weighing display position is dimmed to 0. It can also display the temperature of the sample rack space. When weighing the water sample, the sealing plate 6 is covered, and the water inlet 21 begins to introduce water. The water source enters the flow stabilizing tank 23 through the water inlet pipe 17 and then through the constant temperature water pipe 2. 4. After the water is discharged into the outer tank 18, the lower air outlet pipe 10 is connected to the water tank air inlet 20. The compressor 8 is then operated to adjust the temperature inside the outer tank 18. Once the water temperature inside the outer tank 18 is determined, no more water is added. The water in the outer tank 18 enters the constant flow tank 23 through the constant temperature water pipe 24 and then slowly flows into the inner tank 14 through the water inlet 15. After the operation is completed, the sealing plate 6 is opened and the sample is placed on the water tank weighing pan 16. At this time, the water tank display screen 28 on the water tank control panel 25 displays the weight in the water. At the same time, the main display screen 3 also displays the weight in the water and the brightness is increased. The air is dark and 0. Both displays also display the temperature inside the weighing water tank 5. After the test of weighing the water sample is completed, the water source is discharged from the drain hole 22.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sample weighing electronic scale, comprising an electronic scale (1), characterized in that: The upper surface of the electronic scale (1) is provided with an isolation cover (4). A support rod (7) is fixedly connected to the electronic scale (1). A weighing water tank (5) is fixedly connected to the other end of the support rod (7). An outer groove (18) and an inner groove (14) are opened in the weighing water tank (5). A base (11) is fixedly connected to one side of the outer wall of the weighing water tank (5). A compressor (8) is fixedly connected to the base (11).

2. The electronic scale for weighing samples according to claim 1, characterized in that: The upper surface of the electronic scale (1) is fixedly connected to a tray (26), and a weight (27) is provided on the upper surface of the tray (26).

3. The electronic scale for weighing samples according to claim 1, characterized in that: An air inlet pipe (12) is fixedly connected to one side of the outer wall of the compressor (8), and an upper air outlet pipe (9) and a lower air outlet pipe (10) are fixedly connected to the other side of the outer wall of the compressor (8). A control box (13) is fixedly connected to the upper surface of the compressor (8).

4. The electronic scale for weighing samples according to claim 1, characterized in that: An air inlet (19) is provided on one side of the outer wall of the isolation cover (4).

5. The electronic scale for weighing samples according to claim 1, characterized in that: A water tank control panel (25) is fixedly connected to one side of the outer wall of the weighing water tank (5). A water tank display screen (28) is fixedly connected to the upper surface of the water tank control panel (25). A sealing plate (6) is provided on the upper surface of the weighing water tank (5). A drain hole (22) is provided on the lower surface of the weighing water tank (5).

6. The electronic scale for weighing samples according to claim 1, characterized in that: The outer wall of the outer tank (18) is provided with a water tank air inlet (20) and a water inlet (21). A flow stabilizer (23) is fixedly connected inside the outer tank (18). A water inlet pipe (17) and a constant temperature water pipe (24) are fixedly connected to the outer wall of the flow stabilizer (23). One end of the water inlet pipe (17) is fixedly connected to the water inlet (21).

7. The electronic scale for weighing samples according to claim 1, characterized in that: A water tank weighing pan (16) is fixedly connected to the surface of the inner tank (14). A water injection hole (15) is opened on one side of the inner wall of the inner tank (14), and the water injection hole (15) is connected to the outer tank (18). The flow stabilizer (23) is connected to the water injection hole (15).

8. The electronic scale for weighing samples according to claim 2, characterized in that: The main control panel (2) is fixedly connected to one side of the outer wall of the electronic scale (1), and the main display screen (3) is fixedly connected to the upper surface of the main control panel (2).

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